dns-client: fix add pending server issue when AAAA record not exists

fix  Download/default is missing the FILE field..  Stop. error on openwrt

.clang-format

@@ -1,9 +1,10 @@
-#http://clang.llvm.org/docs/ClangFormatStyleOptions.html
+#http://clang.llvm.org/docs/ClangFormatStyleOptions.html
-
+
-BasedOnStyle: LLVM
+BasedOnStyle: LLVM
-IndentWidth: 4
+IndentWidth: 4
-TabWidth: 4
+TabWidth: 4
-UseTab: ForContinuationAndIndentation
+UseTab: ForContinuationAndIndentation
-MaxEmptyLinesToKeep: 1
+MaxEmptyLinesToKeep: 1
-AllowShortFunctionsOnASingleLine: Empty
+AllowShortFunctionsOnASingleLine: Empty
-BreakBeforeBraces: Linux
+BreakBeforeBraces: Linux
+ColumnLimit: 120

.github/ISSUE_TEMPLATE/feature.md

@@ -0,0 +1,20 @@
+---
+name: 需求建议
+about: 需求建议描述
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**需求应用场景**
+请描述需求应用的场景和方式。
+
+**建议的方案**
+实现上述场景建议的方案。
+
+**设备信息**
+1. 设备信息（CPU，厂家）  
+
+2. 固件信息
+

.github/ISSUE_TEMPLATE/issue.md

@@ -0,0 +1,29 @@
+---
+name: 问题报告
+about: 问题现象描述
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**问题现象**  
+简要描述问题出现的现象
+
+**运行环境**
+1. 固件型号  
+
+2. 运营商  
+
+**重现步骤**
+1. 上游DNS配置。  
+
+2. 访问的域名。  
+
+
+**信息收集**  
+1. 将/var/log/smrtdns.log日志作为附件上传。  
+2. 如进程异常，请将coredump功能开启，上传coredump信息文件。  
+在自定义界面，开启设置->自定义设置->生成coredump配置，重现问题后提交coredump文件
+coredump文件在/tmp目录下
+

LICENSE

@@ -1,21 +1,23 @@
-                    GNU AFFERO GENERAL PUBLIC LICENSE
+                    GNU GENERAL PUBLIC LICENSE
-                       Version 3, 19 November 2007
+                       Version 3, 29 June 2007
 
- Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
  Everyone is permitted to copy and distribute verbatim copies
  of this license document, but changing it is not allowed.
 
                             Preamble
 
-  The GNU Affero General Public License is a free, copyleft license for
+  The GNU General Public License is a free, copyleft license for
-software and other kinds of works, specifically designed to ensure
+software and other kinds of works.
-cooperation with the community in the case of network server software.
 
   The licenses for most software and other practical works are designed
 to take away your freedom to share and change the works.  By contrast,
-our General Public Licenses are intended to guarantee your freedom to
+the GNU General Public License is intended to guarantee your freedom to
 share and change all versions of a program--to make sure it remains free
-software for all its users.
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
 
   When we speak of free software, we are referring to freedom, not
 price.  Our General Public Licenses are designed to make sure that you
@@ -24,34 +26,44 @@ them if you wish), that you receive source code or can get it if you
 want it, that you can change the software or use pieces of it in new
 free programs, and that you know you can do these things.
 
-  Developers that use our General Public Licenses protect your rights
+  To protect your rights, we need to prevent others from denying you
-with two steps: (1) assert copyright on the software, and (2) offer
+these rights or asking you to surrender the rights.  Therefore, you have
-you this License which gives you legal permission to copy, distribute
+certain responsibilities if you distribute copies of the software, or if
-and/or modify the software.
+you modify it: responsibilities to respect the freedom of others.
 
-  A secondary benefit of defending all users' freedom is that
+  For example, if you distribute copies of such a program, whether
-improvements made in alternate versions of the program, if they
+gratis or for a fee, you must pass on to the recipients the same
-receive widespread use, become available for other developers to
+freedoms that you received.  You must make sure that they, too, receive
-incorporate.  Many developers of free software are heartened and
+or can get the source code.  And you must show them these terms so they
-encouraged by the resulting cooperation.  However, in the case of
+know their rights.
-software used on network servers, this result may fail to come about.
-The GNU General Public License permits making a modified version and
-letting the public access it on a server without ever releasing its
-source code to the public.
 
-  The GNU Affero General Public License is designed specifically to
+  Developers that use the GNU GPL protect your rights with two steps:
-ensure that, in such cases, the modified source code becomes available
+(1) assert copyright on the software, and (2) offer you this License
-to the community.  It requires the operator of a network server to
+giving you legal permission to copy, distribute and/or modify it.
-provide the source code of the modified version running there to the
-users of that server.  Therefore, public use of a modified version, on
-a publicly accessible server, gives the public access to the source
-code of the modified version.
 
-  An older license, called the Affero General Public License and
+  For the developers' and authors' protection, the GPL clearly explains
-published by Affero, was designed to accomplish similar goals.  This is
+that there is no warranty for this free software.  For both users' and
-a different license, not a version of the Affero GPL, but Affero has
+authors' sake, the GPL requires that modified versions be marked as
-released a new version of the Affero GPL which permits relicensing under
+changed, so that their problems will not be attributed erroneously to
-this license.
+authors of previous versions.
+
+  Some devices are designed to deny users access to install or run
+modified versions of the software inside them, although the manufacturer
+can do so.  This is fundamentally incompatible with the aim of
+protecting users' freedom to change the software.  The systematic
+pattern of such abuse occurs in the area of products for individuals to
+use, which is precisely where it is most unacceptable.  Therefore, we
+have designed this version of the GPL to prohibit the practice for those
+products.  If such problems arise substantially in other domains, we
+stand ready to extend this provision to those domains in future versions
+of the GPL, as needed to protect the freedom of users.
+
+  Finally, every program is threatened constantly by software patents.
+States should not allow patents to restrict development and use of
+software on general-purpose computers, but in those that do, we wish to
+avoid the special danger that patents applied to a free program could
+make it effectively proprietary.  To prevent this, the GPL assures that
+patents cannot be used to render the program non-free.
 
   The precise terms and conditions for copying, distribution and
 modification follow.
@@ -60,7 +72,7 @@ modification follow.
 
   0. Definitions.
 
-  "This License" refers to version 3 of the GNU Affero General Public License.
+  "This License" refers to version 3 of the GNU General Public License.
 
   "Copyright" also means copyright-like laws that apply to other kinds of
 works, such as semiconductor masks.
@@ -537,45 +549,35 @@ to collect a royalty for further conveying from those to whom you convey
 the Program, the only way you could satisfy both those terms and this
 License would be to refrain entirely from conveying the Program.
 
-  13. Remote Network Interaction; Use with the GNU General Public License.
+  13. Use with the GNU Affero General Public License.
-
-  Notwithstanding any other provision of this License, if you modify the
-Program, your modified version must prominently offer all users
-interacting with it remotely through a computer network (if your version
-supports such interaction) an opportunity to receive the Corresponding
-Source of your version by providing access to the Corresponding Source
-from a network server at no charge, through some standard or customary
-means of facilitating copying of software.  This Corresponding Source
-shall include the Corresponding Source for any work covered by version 3
-of the GNU General Public License that is incorporated pursuant to the
-following paragraph.
 
   Notwithstanding any other provision of this License, you have
 permission to link or combine any covered work with a work licensed
-under version 3 of the GNU General Public License into a single
+under version 3 of the GNU Affero General Public License into a single
 combined work, and to convey the resulting work.  The terms of this
 License will continue to apply to the part which is the covered work,
-but the work with which it is combined will remain governed by version
+but the special requirements of the GNU Affero General Public License,
-3 of the GNU General Public License.
+section 13, concerning interaction through a network will apply to the
+combination as such.
 
   14. Revised Versions of this License.
 
   The Free Software Foundation may publish revised and/or new versions of
-the GNU Affero General Public License from time to time.  Such new versions
+the GNU General Public License from time to time.  Such new versions will
-will be similar in spirit to the present version, but may differ in detail to
+be similar in spirit to the present version, but may differ in detail to
 address new problems or concerns.
 
   Each version is given a distinguishing version number.  If the
-Program specifies that a certain numbered version of the GNU Affero General
+Program specifies that a certain numbered version of the GNU General
 Public License "or any later version" applies to it, you have the
 option of following the terms and conditions either of that numbered
 version or of any later version published by the Free Software
 Foundation.  If the Program does not specify a version number of the
-GNU Affero General Public License, you may choose any version ever published
+GNU General Public License, you may choose any version ever published
 by the Free Software Foundation.
 
   If the Program specifies that a proxy can decide which future
-versions of the GNU Affero General Public License can be used, that proxy's
+versions of the GNU General Public License can be used, that proxy's
 public statement of acceptance of a version permanently authorizes you
 to choose that version for the Program.
 
@@ -633,29 +635,40 @@ the "copyright" line and a pointer to where the full notice is found.
     Copyright (C) <year>  <name of author>
 
     This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU Affero General Public License as published
+    it under the terms of the GNU General Public License as published by
-    by the Free Software Foundation, either version 3 of the License, or
+    the Free Software Foundation, either version 3 of the License, or
     (at your option) any later version.
 
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU Affero General Public License for more details.
+    GNU General Public License for more details.
 
-    You should have received a copy of the GNU Affero General Public License
+    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 Also add information on how to contact you by electronic and paper mail.
 
-  If your software can interact with users remotely through a computer
+  If the program does terminal interaction, make it output a short
-network, you should also make sure that it provides a way for users to
+notice like this when it starts in an interactive mode:
-get its source.  For example, if your program is a web application, its
+
-interface could display a "Source" link that leads users to an archive
+    <program>  Copyright (C) <year>  <name of author>
-of the code.  There are many ways you could offer source, and different
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
-solutions will be better for different programs; see section 13 for the
+    This is free software, and you are welcome to redistribute it
-specific requirements.
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
 
   You should also get your employer (if you work as a programmer) or school,
 if any, to sign a "copyright disclaimer" for the program, if necessary.
-For more information on this, and how to apply and follow the GNU AGPL, see
+For more information on this, and how to apply and follow the GNU GPL, see
-<http://www.gnu.org/licenses/>.
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

Makefile

@@ -0,0 +1,47 @@
+# Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+#
+# smartdns is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# smartdns is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+PKG_CONFIG := pkg-config
+DESTDIR :=
+PREFIX := /usr
+SBINDIR := $(PREFIX)/sbin
+SYSCONFDIR := /etc
+RUNSTATEDIR := /var/run
+SYSTEMDSYSTEMUNITDIR := $(shell ${PKG_CONFIG} --variable=systemdsystemunitdir systemd)
+SMARTDNS_SYSTEMD = systemd/smartdns.service
+
+.PHONY: all clean install SMARTDNS_BIN
+all: SMARTDNS_BIN 
+
+SMARTDNS_BIN: $(SMARTDNS_SYSTEMD)
+	$(MAKE) $(MFLAGS) -C src all 
+
+$(SMARTDNS_SYSTEMD): systemd/smartdns.service.in
+	cp $< $@
+	sed -i 's|@SBINDIR@|$(SBINDIR)|' $@
+	sed -i 's|@SYSCONFDIR@|$(SYSCONFDIR)|' $@
+	sed -i 's|@RUNSTATEDIR@|$(RUNSTATEDIR)|' $@
+
+clean:
+	$(MAKE) $(MFLAGS) -C src clean  
+	$(RM) $(SMARTDNS_SYSTEMD)
+
+install: SMARTDNS_BIN 
+	install -v -m 0640 -D -t $(DESTDIR)$(SYSCONFDIR)/default etc/default/smartdns
+	install -v -m 0755 -D -t $(DESTDIR)$(SYSCONFDIR)/init.d etc/init.d/smartdns
+	install -v -m 0640 -D -t $(DESTDIR)$(SYSCONFDIR)/smartdns etc/smartdns/smartdns.conf
+	install -v -m 0755 -D -t $(DESTDIR)$(SBINDIR) src/smartdns
+	install -v -m 0644 -D -t $(DESTDIR)$(SYSTEMDSYSTEMUNITDIR) systemd/smartdns.service
+

ReadMe_en.md

@@ -0,0 +1,668 @@
+# SmartDNS
+
+![SmartDNS](doc/smartdns-banner.png)  
+SmartDNS is a local DNS server. SmartDNS accepts DNS query requests from local clients, obtains DNS query results from multiple upstream DNS servers, and returns the fastest access results to clients.  
+Avoiding DNS pollution and improving network access speed, supports high-performance ad filtering.  
+Unlike dnsmasq's all-servers, smartdns returns the fastest access resolution. （[read more](#faq)）
+
+Support Raspberry Pi, openwrt, ASUS router, Windows and other devices.  
+
+## Table Of Content
+
+1. [Software Show](#software-show)
+1. [Features](#features)
+1. [Architecture](#architecture)
+1. [Usage](#usage)  
+    1. [Download the package](#download-the-package)
+    1. [Standard Linux system installation/Raspberry Pi, X86_64 system](#standard-linux-system-installation/raspberry-pi,-x86_64-system)
+    1. [openwrt/LEDE](#openwrt/lede)
+    1. [ASUS router native firmware / Merlin firmware](#asus-router-native-firmware-/-merlin-firmware)
+    1. [optware/entware](#optware/entware)
+    1. [Windows 10 WSL Installation/WSL ubuntu](#windows-10-wsl-installation/wsl-ubuntu)
+1. [Configuration parameter](#configuration-parameter)
+1. [Donate](#Donate)
+1. [FAQ](#FAQ)
+
+## Software Show
+
+**Ali DNS**  
+Use Ali DNS to query Baidu's IP and test the results.  
+
+```shell
+pi@raspberrypi:~/code/smartdns_build $ nslookup www.baidu.com 223.5.5.5
+Server:         223.5.5.5
+Address:        223.5.5.5#53
+
+Non-authoritative answer:
+www.baidu.com   canonical name = www.a.shifen.com.
+Name:   www.a.shifen.com
+Address: 180.97.33.108
+Name:   www.a.shifen.com
+Address: 180.97.33.107
+
+pi@raspberrypi:~/code/smartdns_build $ ping 180.97.33.107 -c 2
+PING 180.97.33.107 (180.97.33.107) 56(84) bytes of data.
+64 bytes from 180.97.33.107: icmp_seq=1 ttl=55 time=24.3 ms
+64 bytes from 180.97.33.107: icmp_seq=2 ttl=55 time=24.2 ms
+
+--- 180.97.33.107 ping statistics ---
+2 packets transmitted, 2 received, 0% packet loss, time 1001ms
+rtt min/avg/max/mdev = 24.275/24.327/24.380/0.164 ms
+pi@raspberrypi:~/code/smartdns_build $ ping 180.97.33.108 -c 2
+PING 180.97.33.108 (180.97.33.108) 56(84) bytes of data.
+64 bytes from 180.97.33.108: icmp_seq=1 ttl=55 time=31.1 ms
+64 bytes from 180.97.33.108: icmp_seq=2 ttl=55 time=31.0 ms
+
+--- 180.97.33.108 ping statistics ---
+2 packets transmitted, 2 received, 0% packet loss, time 1001ms
+rtt min/avg/max/mdev = 31.014/31.094/31.175/0.193 ms
+```
+
+**smartdns**  
+Use SmartDNS to query Baidu IP and test the results.
+
+```shell
+pi@raspberrypi:~/code/smartdns_build $ nslookup www.baidu.com
+Server:         192.168.1.1
+Address:        192.168.1.1#53
+
+Non-authoritative answer:
+www.baidu.com   canonical name = www.a.shifen.com.
+Name:   www.a.shifen.com
+Address: 14.215.177.39
+
+pi@raspberrypi:~/code/smartdns_build $ ping 14.215.177.39 -c 2
+PING 14.215.177.39 (14.215.177.39) 56(84) bytes of data.
+64 bytes from 14.215.177.39: icmp_seq=1 ttl=56 time=6.31 ms
+64 bytes from 14.215.177.39: icmp_seq=2 ttl=56 time=5.95 ms
+
+--- 14.215.177.39 ping statistics ---
+2 packets transmitted, 2 received, 0% packet loss, time 1001ms
+rtt min/avg/max/mdev = 5.954/6.133/6.313/0.195 ms
+
+```
+
+From the comparison, smartdns found the fastest IP address to visit www.baidu.com, so accessing Baidu's DNS is 5 times faster than Ali DNS.
+
+## Features
+
+1. **Multiple upstream DNS servers**  
+   Support configuring multiple upstream DNS servers and query at the same time.the query will not be affected, Even if there is a DNS server exception.  
+
+2. **Return the fastest IP address**  
+   Supports finding the fastest access IP address from the IP address list of the domain name and returning it to the client to avoid DNS pollution and improve network access speed.
+
+3. **Support for multiple query protocols**  
+   Support UDP, TCP, TLS, HTTPS queries, and non-53 port queries, effectively avoiding DNS pollution.
+
+4. **Domain IP address specification**  
+   Support configuring IP address of specific domain to achieve the effect of advertising filtering, and avoid malicious websites.
+
+5. **Domain name high performance rule filtering**  
+   Support domain name suffix matching mode, simplify filtering configuration, filter 200,000 recording and take time <1ms.
+
+6. **Linux/Windows multi-platform support**  
+   Support standard Linux system (Raspberry Pi), openwrt system various firmware, ASUS router native firmware. Support Windows 10 WSL (Windows Subsystem for Linux).
+
+7. **Support IPV4, IPV6 dual stack**  
+   Support IPV4, IPV6 network, support query A, AAAA record, dual-stack IP selection, and disale IPV6 AAAA record.
+
+8. **High performance, low resource consumption**  
+   Multi-threaded asynchronous IO mode, cache cache query results.
+
+## Architecture
+
+![Architecture](doc/architecture.png)
+
+1. SmartDNS receives DNS query requests from local network devices, such as PCs and mobile phone query requests.
+2. SmartDNS sends query requests to multiple upstream DNS servers, using standard UDP queries, non-standard port UDP queries, and TCP queries.
+3. The upstream DNS server returns a list of Server IP addresses corresponding to the domain name. SmartDNS detects the fastest Server IP with local network access.
+4. Return the fastest accessed Server IP to the local client.
+
+## Usage
+
+### Download the package
+
+--------------
+
+Download the matching version of the SmartDNS installation package. The corresponding installation package is as follows.
+
+|system |package|Description
+|-----|-----|-----
+|Standard Linux system (Raspberry Pi)| smartdns.xxxxxxxx.arm-debian-all.deb|Support Raspberry Pi Raspbian stretch, Debian 9 system.
+|Standard Linux system (Armbian arm64)| smartdns.xxxxxxxx.aarch64-debian-all.deb|Support Armbian debian stretch, Debian 9 system.
+|Standard Linux system (x86_64)| smartdns.xxxxxxxx.x86_64-linux-all.tar.gz|Support for x86_64 Linux systems.
+|Windows 10 WSL (ubuntu)| smartdns.xxxxxxxx.x86_64-linux-all.tar.gz|Windows 10 WSL ubuntu.
+|Standard Linux system (x86)| smartdns.xxxxxxxx.x86-linux-all.tar.gz|Support for x86_64 systems.
+|optware|smartdns.xxxxxxxx.mips-optware-all.ipk|Support the MIPS big-endian architecture for optware。
+|optware|smartdns.xxxxxxxx.mipsel-optware-all.ipk|Support the MIPS little-endian architecture for optware。
+|optware|smartdns.xxxxxxxx.arm-optware-all.ipk|Support the arm architecture for optware。
+|openwrt|smartdns.xxxxxxxx.mips-openwrt-all.ipk|Support the MIPS big-endian architecture for openwrt。
+|openwrt|smartdns.xxxxxxxx.mipsel-openwrt-all.ipk|Support the MIPS little-endian architecture for openwrt。
+|openwrt|smartdns.xxxxxxxx.arm-openwrt-all.ipk|Support the arm architecture for openwrt。
+|openwrt LUCI|luci-app-smartdns.xxxxxxxxx.all.ipk|Openwrt management interface.
+|openwrt LUCI|luci-app-smartdns.xxxxxxxxx.all-luci-compat-all|Compat Openwrt management interface for early openwrt.
+
+* The released packages are statically compiled. If you need a small size package, please compile it yourself or obtain it from the openwrt / entware repository.
+
+* **Please download from the Release page: [Download here](https://github.com/pymu/smartdns/releases)**
+
+```shell
+https://github.com/pymumu/smartdns/releases
+```
+
+* For the installation procedure, please refer to the following sections.
+
+### Standard Linux system installation/Raspberry Pi, X86_64 system
+
+--------------
+
+1. Installation
+
+    Download the installation package like `smartdns.xxxxxxxx.arm-debian-all.deb` and upload it to the Linux system. Run the following command to install
+
+    ```shell
+    dpkg -i smartdns.xxxxxxxx.arm-debian-all.deb
+    ```
+
+    For X86-64 system, download the installation package like `smartdns.xxxxxxxx.x86_64-linux-all.tar.gz` and upload it to the Linux system. Run the following command to install
+
+    ```shell
+    tar zxf smartdns.xxxxxxxx.x86_64-linux-all.tar.gz
+    cd smartdns
+    chmod +x ./install
+    ./install -i
+    ```
+
+1. Configuration
+
+    After the installation is complete, you can configure the upstream server to  smartdns. Refer to the `Configuration Parameters` for specific configuration parameters.  
+    In general, you only need to add `server [IP]:port`, `server-tcp [IP]:port` configuration items.  
+    Configure as many upstream DNS servers as possible, including servers at home and abroad. Please refer to the `Configuration Parameters` section for configuration parameters.  
+
+    ```shell
+    vi /etc/smartdns/smartdns.conf
+    ```
+
+1. Start Service
+
+    ```shell
+    systemctl enable smartdns
+    systemctl start smartdns
+    ```
+
+1. Forwarding DNS request to SmartDNS
+
+    Modify the DNS server of the local router and configure the DNS server as SmartDNS.
+    * Log in to the router on the local network and configure the Raspberry Pi to assign a static IP address.
+    * Modify the WAN port or DHCP DNS to the Raspberry Pi IP address.
+    Note:
+    I. Each router configuration method is different. Please search Baidu for related configuration methods.
+    II. some routers may not support configuring custom DNS server. in this case, please modify the PC's, mobile phone's DNS server to the ip of Raspberry Pi.
+
+1. Check if the service is configured successfully
+
+    Query domain name with `nslookup -querytype=ptr smartdns`  
+    Check if the `name` item in the command result is displayed as `smartdns` or `hostname`, such as `smartdns`
+
+    ```shell
+    pi@raspberrypi:~/code/smartdns_build $ nslookup -querytype=ptr smartdns
+    Server:         192.168.1.1
+    Address:        192.168.1.1#53
+
+    Non-authoritative answer:
+    smartdns         name = smartdns.
+    ```
+
+### openwrt
+
+--------------
+
+1. Installation
+
+    Upload the software to the /root directory of the router with winscp or other tool, and execute the following command to install it.
+
+    ```shell
+    opkg install smartdns.xxxxxxxx.xxxx.ipk
+    opkg install luci-app-smartdns.xxxxxxxx.xxxx.all.ipk
+    ```
+
+    * Note: For versions before openwrt 19.07, please install `luci-app-smartdns.xxxxxxxxx.all-luci-compat-all` package.
+
+1. Configuration
+
+    Log in to the openwrt management page and open `Services`->`SmartDNS` to configure SmartDNS.
+    * Add upstream DNS server configuration to `Upstream Servers`. It is recommended to configure multiple DNS servers at home and abroad.
+    * Specify the IP address of a specific domain name in `Domain Address`, which can be used for ad blocking.
+
+1. Start Service
+
+   There are two ways to use the SmartDNS service, `one is directly as the primary DNS service`, `the other is as the upstream of dnsmasq`.  
+   By default, SmartDNS uses the first method. You can choose according to your needs in the following two ways.
+
+1. Method 1: SmartDNS as primary DNS Server (default scheme)
+
+    * **Enable SmartDNS port 53 port redirection**
+
+        Log in to the router, click on `Services`->`SmartDNS`->`redirect`, select `Redirect 53 port to SmartDNS` option to enable port 53 forwarding.
+
+    * **Check if the service is configured successfully**
+
+        Query domain name with `nslookup -querytype=ptr smartdns`
+        See if the `name` item in the command result is displayed as `smartdns` or `hostname`, such as `smartdns`
+
+        ```shell
+        pi@raspberrypi:~/code/smartdns_build $ nslookup -querytype=ptr smartdns
+        Server:         192.168.1.1
+        Address:        192.168.1.1#53
+
+        Non-authoritative answer:
+        smartdns         name = smartdns.
+        ```
+
+    * **The interface prompts that the redirect failed**
+
+        * Check if iptable, ip6table command is installed correctly.
+        * The openwrt 15.01 system does not support IPV6 redirection. If the network needs to support IPV6, please change DNSMASQ upstream to smartdns, or change the smartdns port to 53, and disable dnsmasq.
+        * After LEDE system, please install IPV6 nat forwarding driver. Click `system`->`Software`, click `update lists` to update the software list, install `ip6tables-mod-nat`
+        * Use the following command to check whether the routing rule takes effect.
+
+        ```shell
+        iptables -t nat -L PREROUTING | grep REDIRECT
+        ```
+
+        * If the forwarding function is abnormal, please use Method 2: As the upstream of DNSMASQ.
+
+1. Method 2: SmartDNS as upstream DNS Server of DNSMASQ
+
+    * **Forward dnsmasq's request to SmartDNS**
+
+        Log in to the router, click on `Services`->`SmartDNS`->`redirect`, select `Run as dnsmasq upstream server` option to forwarding dnsmasq request to Smartdns.
+
+    * **Check if the service is configured successfully**
+
+        * Method 1: Query domain name with `nslookup -querytype=ptr 0.0.0.1`
+        See if the `name` item in the command result is displayed as `smartdns` or `hostname`, such as `smartdns`
+
+        ```shell
+        pi@raspberrypi:~/code/smartdns_build $ nslookup -querytype=ptr smartdns
+        Server:         192.168.1.1
+        Address:        192.168.1.1#53
+
+        Non-authoritative answer:
+        smartdns         name = smartdns.
+        ```
+
+        * Method 2: Use `nslookup` to query the `www.baidu.com` domain name to see if the IP address of Baidu in the result is `only one. If there are multiple IP addresses returned, it means that it is not valid. Please try to check several domain names.
+
+        ```shell
+        pi@raspberrypi:~ $ nslookup www.baidu.com 192.168.1.1
+        Server:         192.168.1.1
+        Address:        192.168.1.1#53
+
+        Non-authoritative answer:
+        www.baidu.com   canonical name = www.a.shifen.com.
+        Name:   www.a.shifen.com
+        Address: 14.215.177.38
+        ```
+
+1. Start Service
+
+    Check the `Enable' in the configuration page to start SmartDNS server.
+
+1. Note
+
+    * If chinaDNS is already installed, it is recommended to configure the upstream of chinaDNS as SmartDNS.
+    * SmartDNS defaults to forwarding port 53 requests to the local port of SmartDNS, controlled by the `Redirect` configuration option.
+
+### ASUS router native firmware / Merlin firmware
+
+--------------
+
+Note: Merlin firmware is derived from ASUS firmware and can theoretically be used directly with the ASUS package. However, it is currently unverified. If you have any questions, please submit an issue.
+
+1. Prepare
+
+    When using this software, you need to confirm whether the router supports U disk and prepare a USB disk.
+
+1. Enable SSH login
+
+    Log in to the management interface, click `System Management`-> Click `System Settings` and configure `Enable SSH` to `Lan Only`.  
+    The SSH login username and password are the same as the management interface.
+
+1. Insstall `Download Master`
+
+    In the management interface, click `USB related application`-> click `Download Master` to download.  
+    After the download is complete, enable `Download Master`. If you do not need the download function, you can uninstall `Download Master` here, but make sure that Download Master is enabled before uninstalling.  
+
+1. Install SmartDNS
+
+    Upload the software to the router's `/tmp/mnt/sda1` directory using winscp. (or copy the network neighborhood to the sda1 shared directory)
+
+    ```shell
+    ipkg install smartdns.xxxxxxx.mipsbig.ipk
+    ```
+
+1. Restart router
+
+    After the router is started, use `nslookup -querytype=ptr smartdns` to query the domain name.  
+    See if the `name` item in the command result is displayed as `smartdns` or `hostname`, such as `smartdns`
+
+    ```shell
+    pi@raspberrypi:~/code/smartdns_build $ nslookup -querytype=ptr smartdns
+    Server:         192.168.1.1
+    Address:        192.168.1.1#53
+
+    Non-authoritative answer:
+    smartdns         name = smartdns.
+    ```
+
+1. Note
+
+    In the above process, smartdns will be installed to the root directory of the U disk and run in optware mode.  
+    Its directory structure is as follows: (only smartdns related files are listed here)
+
+    ```shell
+    USB DISK
+    └── asusware.mipsbig
+            ├── bin
+            ├── etc
+            |    ├── smartdns
+            |    |     └── smartdns.conf
+            |    └── init.d
+            |          └── S50smartdns
+            ├── lib
+            ├── sbin
+            ├── usr
+            |    └── sbin
+            |          └── smartdns
+            ....
+    ```
+
+    To modify the configuration, you can use ssh to login to the router and use the vi command to modify it.
+
+    ```shell
+    vi /opt/etc/smartdns/smartdns.conf
+    ```
+
+    It can also be modified from Network Neighborhood. From the neighbor sharing directory `sda1` you can't see the `asusware.mipsbig` directory, but you can directly enter `asusware.mipsbig\etc\init.d` in `File Manager` to modify it.
+
+    ```shell
+    \\192.168.1.1\sda1\asusware.mipsbig\etc\init.d
+    ```
+
+### optware/entware
+
+--------------
+
+1. Prepare
+
+    When using this software, you need to confirm whether the router supports USB disk and prepare a USB disk.
+
+1. Install SmartDNS
+
+    Upload the software to `/tmp` directory of the router using winscp, and run the flollowing command to install.
+
+    ```shell
+    ipkg install smartdns.xxxxxxx.mipsbig.ipk
+    ```
+
+1. Modify the smartdns configuration
+
+    ```shell
+    Vi /opt/etc/smartdns/smartdns.conf
+    ```
+
+    Note: if you need to support IPV6, you can set the worke-mode to `2`, this will disable the DNS service of dnsmasq, and smartdns run as the primary DNS server. Change `SMARTDNS_WORKMODE` in the file `/opt/etc/smartdns/smartdns-opt.conf` to 2.
+
+    ```shell
+    SMARTDNS_WORKMODE="2"
+    ```
+
+1. Restart the router to take effect
+
+    After the router is started, use `nslookup -querytype=ptr smartdns` to query the domain name.
+    See if the `name` item in the command result is displayed as `smartdns` or `hostname`, such as `smartdns`
+
+    ```shell
+    Pi@raspberrypi:~/code/smartdns_build $ nslookup -querytype=ptr smartdns
+    Server: 192.168.1.1
+    Address: 192.168.1.1#53
+
+    Non-authoritative answer:
+    smartdns        name = smartdns.
+    ```
+
+    Note: If the service does not start automatically, you need to set optwre/entware to start automatically. For details, see the optware/entware documentation.
+
+### Windows 10 WSL Installation/WSL ubuntu
+
+--------------
+
+1. Install Windows 10 WSL ubuntu
+
+   Install the Windows 10 WSL environment and select Ubuntu as default distribution. Please refer to [WSL installation instructions](https://docs.microsoft.com/en-us/windows/wsl/install-win10) for installation steps
+
+1. Install smartdns
+
+    download install package `smartdns.xxxxxxxx.x86_64-linux-all.tar.gz`，and unzip to the `D:\` directory, after decompression, the directory is as follows: 
+
+    ```shell
+    D:\SMARTDNS
+    ├─etc
+    │  ├─default
+    │  ├─init.d
+    │  └─smartdns
+    ├─package
+    │  └─windows
+    ├─src
+    └─systemd
+
+    ```
+
+    Double-click `install.bat` in the `D:\smartdns\package\windows` directory for installation. Please enter the password for `WLS ubuntu` when input password.
+
+1. Configuration
+
+    Edit `smartdns.conf` configuration file in `D:\smartdns\etc\smartdns` directory, you can configure the upstream server to  smartdns. Refer to the `Configuration Parameters` for specific configuration parameters.  
+    In general, you only need to add `server [IP]:port`, `server-tcp [IP]:port` configuration items.  
+    Configure as many upstream DNS servers as possible, including servers at home and abroad. Please refer to the `Configuration Parameters` section for configuration parameters.  
+
+1. Start Service
+
+    Double-click `reload.bat` in the `D:\smartdns\package\windows` directory for reload.
+
+1. Forwarding DNS request to SmartDNS
+
+    Modify the default DNS server for Windows to `127.0.0.1`, with these steps referred to [IP configuration](https://support.microsoft.com/en-us/help/15089/windows-change-tcp-ip-settings)
+
+1. Check if the service is configured successfully
+
+    Query domain name with `nslookup -querytype=ptr smartdns`  
+    Check if the `name` item in the command result is displayed as `smartdns` or `hostname`, such as `smartdns`
+
+    ```shell
+    pi@raspberrypi:~/code/smartdns_build $ nslookup -querytype=ptr smartdns
+    Server:         192.168.1.1
+    Address:        192.168.1.1#53
+
+    Non-authoritative answer:
+    smartdns         name = smartdns.
+    ```
+
+## Configuration parameter
+
+|parameter|Parameter function|Default value|Value type|Example|
+|--|--|--|--|--|
+|server-name|DNS name|host name/smartdns|any string like hosname|server-name smartdns
+|bind|DNS listening port number|[::]:53|Support binding multiple ports<br>`IP:PORT`: server IP, port number. <br>`[-group]`: The DNS server group used when requesting. <br>`[-no-rule-addr]`: Skip the address rule. <br>`[-no-rule-nameserver]`: Skip the Nameserver rule. <br>`[-no-rule-ipset]`: Skip the Ipset rule. <br>`[-no-rule-soa]`: Skip address SOA(#) rules.<br>`[-no-dualstack-selection]`: Disable dualstack ip selection.<br>`[-no-speed-check]`: Disable speed measurement. <br>`[-no-cache]`: stop caching |bind :53
+|bind-tcp|TCP mode DNS listening port number|[::]:53|Support binding multiple ports<br>`IP:PORT`: server IP, port number. <br>`[-group]`: The DNS server group used when requesting. <br>`[-no-rule-addr]`: Skip the address rule. <br>`[-no-rule-nameserver]`: Skip the Nameserver rule. <br>`[-no-rule-ipset]`: Skip the Ipset rule. <br>`[-no-rule-soa]`: Skip address SOA(#) rules.<br>`[-no-dualstack-selection]`: Disable dualstack ip selection.<br>`[-no-speed-check]`: Disable speed measurement. <br>`[-no-cache]`: stop caching |bind-tcp :53
+|cache-size|Domain name result cache number|512|integer|cache-size 512
+|tcp-idle-time|TCP connection idle timeout|120|integer|tcp-idle-time 120
+|rr-ttl|Domain name TTL|Remote query result|number greater than 0|rr-ttl 600
+|rr-ttl-min|Domain name Minimum TTL|Remote query result|number greater than 0|rr-ttl-min 60
+|rr-ttl-max|Domain name Maximum TTL|Remote query result|number greater than 0|rr-ttl-max 600
+|log-level|log level|error|fatal,error,warn,notice,info,debug|log-level error
+|log-file|log path|/var/log/smartdns.log|File Pah|log-file /var/log/smartdns.log
+|log-size|log size|128K|number+K,M,G|log-size 128K
+|log-num|archived log number|2|Integer|log-num 2
+|audit-enable|audit log enable|no|[yes\|no]|audit-enable yes
+|audit-file|audit log file|/var/log/smartdns-audit.log|File Path|audit-file /var/log/smartdns-audit.log
+|audit-size|audit log size|128K|number+K,M,G|audit-size 128K
+|audit-num|archived audit log number|2|Integer|audit-num 2
+|conf-file|additional conf file|None|File path|conf-file /etc/smartdns/smartdns.more.conf
+|server|Upstream UDP DNS server|None|Repeatable <br>`[ip][:port]`: Server IP, port optional. <br>`[-blacklist-ip]`: The "-blacklist-ip" parameter is to filtering IPs which is configured by "blacklist-ip". <br>`[-whitelist-ip]`: whitelist-ip parameter specifies that only the IP range configured in whitelist-ip is accepted. <br>`[-group [group] ...]`: The group to which the DNS server belongs, such as office, foreign, use with nameserver. <br>`[-exclude-default-group]`: Exclude DNS servers from the default group| server 8.8.8.8:53 -blacklist-ip
+|server-tcp|Upstream TCP DNS server|None|Repeatable <br>`[ip][:port]`: Server IP, port optional. <br>`[-blacklist-ip]`: The "-blacklist-ip" parameter is to filtering IPs which is configured by "blacklist-ip". <br>`[-whitelist-ip]`: whitelist-ip parameter specifies that only the IP range configured in whitelist-ip is accepted. <br>`[-group [group] ...]`: The group to which the DNS server belongs, such as office, foreign, use with nameserver. <br>`[-exclude-default-group]`: Exclude DNS servers from the default group| server-tcp 8.8.8.8:53
+|server-tls|Upstream TLS DNS server|None|Repeatable <br>`[ip][:port]`: Server IP, port optional. <br>`[-spki-pin [sha256-pin]]`: TLS verify SPKI value, a base64 encoded SHA256 hash<br>`[-host-name]`:TLS Server name. <br>`[-tls-host-verify]`: TLS cert hostname to verify. <br>`-no-check-certificate:`: No check certificate. <br>`[-blacklist-ip]`: The "-blacklist-ip" parameter is to filtering IPs which is configured by "blacklist-ip". <br>`[-whitelist-ip]`: whitelist-ip parameter specifies that only the IP range configured in whitelist-ip is accepted. <br>`[-group [group] ...]`: The group to which the DNS server belongs, such as office, foreign, use with nameserver. <br>`[-exclude-default-group]`: Exclude DNS servers from the default group| server-tls 8.8.8.8:853
+|server-https|Upstream HTTPS DNS server|None|Repeatable <br>`https://[host][:port]/path`: Server IP, port optional. <br>`[-spki-pin [sha256-pin]]`: TLS verify SPKI value, a base64 encoded SHA256 hash<br>`[-host-name]`:TLS Server name<br>`[-http-host]`：http header host. <br>`[-tls-host-verify]`: TLS cert hostname to verify. <br>`-no-check-certificate:`: No check certificate. <br>`[-blacklist-ip]`: The "-blacklist-ip" parameter is to filtering IPs which is configured by "blacklist-ip". <br>`[-whitelist-ip]`: whitelist-ip parameter specifies that only the IP range configured in whitelist-ip is accepted. <br>`[-group [group] ...]`: The group to which the DNS server belongs, such as office, foreign, use with nameserver. <br>`[-exclude-default-group]`: Exclude DNS servers from the default group| server-https https://cloudflare-dns.com/dns-query
+|speed-check-mode|Speed ​​mode|None|[ping\|tcp:[80]\|none]|speed-check-mode ping,tcp:443
+|address|Domain IP address|None|address /domain/[ip\|-\|-4\|-6\|#\|#4\|#6], `-` for ignore, `#` for return SOA, `4` for IPV4, `6` for IPV6| address /www.example.com/1.2.3.4
+|nameserver|To query domain with specific server group|None|nameserver /domain/[group\|-], `group` is the group name, `-` means ignore this rule, use the `-group` parameter in the related server|nameserver /www.example.com/office
+|ipset|Domain IPSet|None|ipset /domain/[ipset\|-], `-` for ignore|ipset /www.example.com/pass
+|ipset-timeout|ipset timeout enable|auto|[yes]|ipset-timeout yes
+|domain-rules|set domain rules|None|domain-rules /domain/ [-rules...]<br>`[-speed-check-mode]`: set speed check mode，same as parameter `speed-check-mode`<br>`[-address]`: same as  parameter `address` <br>`[-nameserver]`: same as parameter `nameserver`<br>`[-ipset]`: same as parameter `ipset`|domain-rules /www.example.com/ -speed-check-mode none
+|bogus-nxdomain|bogus IP address|None|[IP/subnet], Repeatable| bogus-nxdomain 1.2.3.4/16
+|ignore-ip|ignore ip address|None|[ip/subnet], Repeatable| ignore-ip 1.2.3.4/16
+|whitelist-ip|ip whitelist|None|[ip/subnet], Repeatable，When the filtering server responds IPs in the IP whitelist, only result in whitelist will be accepted| whitelist-ip 1.2.3.4/16
+|blacklist-ip|ip blacklist|None|[ip/subnet], Repeatable，When the filtering server responds IPs in the IP blacklist, The result will be discarded directly| blacklist-ip 1.2.3.4/16
+|force-AAAA-SOA|force AAAA query return SOA|no|[yes\|no]|force-AAAA-SOA yes
+|prefetch-domain|domain prefetch feature|no|[yes\|no]|prefetch-domain yes
+|serve-expired|Cache serve expired feature|no|[yes\|no], Attempts to serve old responses from cache with a TTL of 0 in the response without waiting for the actual resolution to finish.|serve-expired yes
+|serve-expired-ttl|Cache serve expired limite TTL|0|second，0：disable，> 0  seconds after expiration|serve-expired-ttl 0
+|dualstack-ip-selection|Dualstack ip selection|no|[yes\|no]|dualstack-ip-selection yes
+|dualstack-ip-selection-threshold|Dualstack ip select threadhold|30ms|millisecond|dualstack-ip-selection-threshold [0-1000]
+|ca-file|certificate file|/etc/ssl/certs/ca-certificates.crt|path|ca-file /etc/ssl/certs/ca-certificates.crt
+|ca-path|certificates path|/etc/ssl/certs|path|ca-path /etc/ssl/certs
+
+## FAQ
+
+1. What is the difference between SmartDNS and DNSMASQ?  
+    Smartdns is not designed to replace DNSMASQ. The main function of Smartdns is focused on DNS resolution enhancement, the difference are:  
+    * Multiple upstream server concurrent requests, after the results are measured, return the best results;
+    * `address`, `ipset` domain name matching uses efficient algorithms, query matching is faster and more efficient, and router devices are still efficient.
+    * Domain name matching supports ignoring specific domain names, and can be individually matched to IPv4, IPV6, and supports diversified customization.
+    * Enhance the ad blocking feature, return SOA record, this block ads better;
+    * IPV4, IPV6 dual stack IP optimization mechanism, in the case of dual network, choose the fastest network.
+    * Supports the latest TLS, HTTPS protocol and provides secure DNS query capabilities.
+    * DNS anti-poison mechanism, and a variety of mechanisms to avoid DNS pollution.
+    * ECS support, the query results are better and more accurate.
+    * IP blacklist support, ignoring the blacklist IP to make domain name queries better and more accurate.
+    * Domain name pre-fetch, more faster to access popular websites.
+    * Domain name TTL can be specified to make access faster.
+    * Cache mechanism to make access faster.
+    * Asynchronous log, audit log mechanism, does not affect DNS query performance while recording information.
+    * Domain group mechanism, specific domain names use specific upstream server group queries to avoid privacy leakage.
+    * The second DNS supports customizing more behavior.
+
+1. What is the best practices for upstream server configuration?  
+    Smartdns has a speed measurement mechanism. When configuring an upstream server, it is recommended to configure multiple upstream DNS servers, including servers in different regions, but the total number is recommended to be around 10. Recommended configuration
+    * Carrier DNS.
+    * Public DNS, such as `8.8.8.8`, `8.8.4.4`, `1.1.1.1`.
+
+    For specific domain names, if there is a pollution, you can enable the anti-pollution mechanism.
+
+1. How to enable the audit log  
+    The audit log records the domain name requested by the client. The record information includes the request time, the request IP address, the request domain name, and the request type. If you want to enable the audit log, configure `audit-enable yes` in the configuration file, `audit-size`, `Audit-file`, `audit-num` configure the audit log file size, the audit log file path, and the number of audit log files. The audit log file will be compressed to save space.
+
+1. How to avoid DNS privacy leaks
+    By default, smartdns will send requests to all configured DNS servers. If the upstream DNS servers record DNS logs, it will result in a DNS privacy leak. To avoid privacy leaks, try the following steps:
+    * Use trusted DNS servers.
+    * Use TLS servers.
+    * Set up an upstream DNS server group.
+
+1. How to block ads
+    Smartdns has a high-performance domain name matching algorithm. It is very efficient to filter advertisements by domain name. To block ads, you only need to configure records like the following configure. For example, if you block `*.ad.com`, configure as follows:
+
+    ```sh
+    Address /ad.com/#
+    ```
+
+    The suffix mode of the domain name, filtering *.ad.com, `#` means returning SOA record. If you want to only block IPV4 or IPV6 separately, add a number after `#`, such as `#4` is for IPV4 blocking. If you want to ignore some specific subdomains, you can configure it as follows. e.g., if you ignore `pass.ad.com`, you can configure it as follows:
+
+    ```sh
+    Address /pass.ad.com/-
+    ```
+
+1. DNS query diversion
+    In some cases, some domain names need to be queried using a specific DNS server to do DNS diversion. such as.
+
+    ```sh
+    .home -> 192.168.1.1
+    .office -> 10.0.0.1
+    ```
+
+    The domain name ending in .home is sent to 192.168.1.1 for resolving
+    The domain name ending in .office is sent to 10.0.0.1 for resolving
+    Other domain names are resolved using the default mode.
+    The diversion configuration for this case is as follows:
+
+    ```sh
+    # Upstream configuration, use -group to specify the group name, and -exclude-default-group to exclude the server from the default group.
+    Server 192.168.1.1 -group home -exclude-default-group
+    Server 10.0.0.1 -group office -exclude-default-group
+    Server 8.8.8.8
+
+    #Configure the resolved domain name with specific group
+    Nameserver /.home/home
+    Nameserver /.office/office
+    ```
+
+    You can use the above configuration to implement DNS resolution and offload. If you need to implement traffic distribution on the requesting port, you can configure the second DNS server. The bind configuration is added. The group parameter specifies the traffic distribution name.
+
+    ```sh
+    Bind :7053 -group office
+    Bind :8053 -group home
+    ```
+
+1. How to use the IPV4, IPV6 dual stack IP optimization feature  
+    At present, IPV6 network is not as fast as IPV4 in some cases. In order to get a better experience in the dual-stack network, SmartDNS provides a dual-stack IP optimization mechanism, the same domain name, and the speed of IPV4. Far faster than IPV6, then SmartDNS will block the resolution of IPV6, let the PC use IPV4, the feature is enabled by `dualstack-ip-selection yes`, `dualstack-ip-selection-threshold [time]` is for threshold. if you want to disable IPV6 AAAA record complete, please try `force-AAAA-SOA yes`.
+
+1. How to improve cache performace  
+    Smartdns provides a domain name caching mechanism to cache the queried domain name, and the caching time is in accordance with the DNS TTL specification. To increase the cache hit rate, the following configuration can be taken:
+    * Increase the number of cache records appropriately  
+    Set the number of cache records by `cache-size`.
+    In the case of a query with a high pressure environment and a machine with a large memory, it can be appropriately adjusted.
+
+    * Set the minimum TTL value as appropriate  
+    Set the minimum DNS TTL time to a appropriate value by `rr-ttl-min` to extend the cache time.
+    It is recommended that the timeout period be set to 10 to 30 minutes to avoid then invalid domain names when domain ip changes.
+
+    * Enable domain pre-acquisition  
+    Enable pre-fetching of domain names with `prefetch-domain yes` to improve query hit rate.
+    by default, Smartdns will send domain query request again before cache expire, and cache the result for the next query. Frequently accessed domain names will continue to be cached. This feature will consume more CPU when idle.
+
+    * Cache serve expired feature  
+    Enable cache serve expired feature with `serve-expired yes` to improve the cache hit rate and reduce the CPU consumption.
+    This feature will return TTL = 0 to the client after the TTL timeout, and send a new query request again at the same time, and cache the new results for later query.
+
+1. How does the second DNS customize more behavior?
+    The second DNS can be used as the upstream of other DNS servers to provide more query behaviors. Bind configuration support can bind multiple ports. Different ports can be set with different flags to implement different functions, such as
+
+    ```sh
+    # Binding 6053 port, request for port 6053 will be configured with the upstream query of the office group, and the result will not be measured. The address configuration address is ignored.
+    bind [::]:6053 -no-speed-check -group office -no-rule-addr
+    ```
+
+## Compile
+
+smartdns contains scripts for compiling packages, supports compiling luci, debian, openwrt, opare installation packages, and can execute `package/build-pkg.sh` compilation.
+
+## [Donate](#Donate)  
+
+If you feel that this project is helpful to you, please donate to us so that the project can continue to develop and be more perfect.
+
+### PayPal
+
+[![Support via PayPal](https://cdn.rawgit.com/twolfson/paypal-github-button/1.0.0/dist/button.svg)](https://paypal.me/PengNick/)
+
+### Alipay
+
+![alipay](doc/alipay_donate.jpg)
+
+### Wechat
+  
+![wechat](doc/wechat_donate.jpg)
+
+## Open Source License
+
+Smartdns is licensed to the public under the GPL V3 License.

ReadMe_zh-CN.md

@@ -1,695 +0,0 @@
-# SmartDNS
-
-![SmartDNS](doc/smartdns-banner.png)  
-SmartDNS是一个运行在本地的DNS服务器，SmartDNS接受本地客户端的DNS查询请求，从多个上游DNS服务器获取DNS查询结果，并将访问速度最快的结果返回给客户端，避免DNS污染，提高网络访问速度。
-同时支持指定特定域名IP地址，并高性匹配，达到过滤广告的效果。  
-与dnsmasq的all-servers不同，smartdns返回的是访问速度最快的解析结果。 (详细差异请看[FAQ](#faq)) 
-
-支持树莓派，openwrt，华硕路由器，windows等设备。  
-
-## 目录
-
-1. [软件效果展示](#软件效果展示)
-1. [特性](#特性)
-1. [架构](#架构)
-1. [使用](#使用)  
-    1. [下载配套安装包](#下载配套安装包)
-    1. [标准Linux系统安装](#标准linux系统安装树莓派x86_64系统)
-    1. [openwrt/LEDE](#openwrtlede)
-    1. [华硕路由器原生固件/梅林固件](#华硕路由器原生固件梅林固件)
-    1. [optware/entware](#optwareentware)
-    1. [Windows 10 WSL安装/WSL ubuntu](#windows-10-wsl安装wsl-ubuntu)
-1. [配置参数](#配置参数)
-1. [捐助](#donate)
-1. [声明](#声明)
-1. [FAQ](#faq)
-
-## 软件效果展示
-
-**阿里DNS**  
-使用阿里DNS查询百度IP，并检测结果。  
-
-```shell
-pi@raspberrypi:~/code/smartdns_build $ nslookup www.baidu.com 223.5.5.5
-Server:         223.5.5.5
-Address:        223.5.5.5#53
-
-Non-authoritative answer:
-www.baidu.com   canonical name = www.a.shifen.com.
-Name:   www.a.shifen.com
-Address: 180.97.33.108
-Name:   www.a.shifen.com
-Address: 180.97.33.107
-
-pi@raspberrypi:~/code/smartdns_build $ ping 180.97.33.107 -c 2
-PING 180.97.33.107 (180.97.33.107) 56(84) bytes of data.
-64 bytes from 180.97.33.107: icmp_seq=1 ttl=55 time=24.3 ms
-64 bytes from 180.97.33.107: icmp_seq=2 ttl=55 time=24.2 ms
-
---- 180.97.33.107 ping statistics ---
-2 packets transmitted, 2 received, 0% packet loss, time 1001ms
-rtt min/avg/max/mdev = 24.275/24.327/24.380/0.164 ms
-pi@raspberrypi:~/code/smartdns_build $ ping 180.97.33.108 -c 2
-PING 180.97.33.108 (180.97.33.108) 56(84) bytes of data.
-64 bytes from 180.97.33.108: icmp_seq=1 ttl=55 time=31.1 ms
-64 bytes from 180.97.33.108: icmp_seq=2 ttl=55 time=31.0 ms
-
---- 180.97.33.108 ping statistics ---
-2 packets transmitted, 2 received, 0% packet loss, time 1001ms
-rtt min/avg/max/mdev = 31.014/31.094/31.175/0.193 ms
-```
-
-**smartdns**  
-使用SmartDNS查询百度IP，并检测结果。
-
-```shell
-pi@raspberrypi:~/code/smartdns_build $ nslookup www.baidu.com
-Server:         192.168.1.1
-Address:        192.168.1.1#53
-
-Non-authoritative answer:
-www.baidu.com   canonical name = www.a.shifen.com.
-Name:   www.a.shifen.com
-Address: 14.215.177.39
-
-pi@raspberrypi:~/code/smartdns_build $ ping 14.215.177.39 -c 2
-PING 14.215.177.39 (14.215.177.39) 56(84) bytes of data.
-64 bytes from 14.215.177.39: icmp_seq=1 ttl=56 time=6.31 ms
-64 bytes from 14.215.177.39: icmp_seq=2 ttl=56 time=5.95 ms
-
---- 14.215.177.39 ping statistics ---
-2 packets transmitted, 2 received, 0% packet loss, time 1001ms
-rtt min/avg/max/mdev = 5.954/6.133/6.313/0.195 ms
-
-```
-
-从对比看出，smartdns找到访问www.baidu.com最快的IP地址，这样访问百度比阿里DNS速度快5倍。
-
-## 特性
-
-1. **多DNS上游服务器**  
-   支持配置多个上游DNS服务器，并同时进行查询，即使其中有DNS服务器异常，也不会影响查询。  
-
-1. **返回最快IP地址**  
-   支持从域名所属IP地址列表中查找到访问速度最快的IP地址，并返回给客户端，避免DNS污染，提高网络访问速度。
-
-1. **支持多种查询协议**  
-   支持UDP，TCP，TLS, HTTPS查询，以及非53端口查询，有效避免DNS污染。
-
-1. **特定域名IP地址指定**  
-   支持指定域名的IP地址，达到广告过滤效果，避免恶意网站的效果。
-
-1. **域名高性能后缀匹配**  
-   支持域名后缀匹配模式，简化过滤配置，过滤20万条记录时间<1ms
-
-1. **域名分流**  
-   支持域名分流，不同类型的域名到不同的DNS服务器查询。
-
-1. **Linux/Windows多平台支持**  
-   支持标准Linux系统（树莓派），openwrt系统各种固件，华硕路由器原生固件。以及支持Windows 10 WSL (Windows Subsystem for Linux)。
-
-1. **支持IPV4, IPV6双栈**  
-   支持IPV4，IPV6网络，支持查询A, AAAA记录，支持双栈IP速度优化，并支持完全禁用IPV6 AAAA解析。
-
-1. **高性能，占用资源少**  
-   多线程异步IO模式，cache缓存查询结果。
-
-## 架构
-
-![Architecture](doc/architecture.png)
-
-1. SmartDNS接收本地网络设备的DNS查询请求，如PC，手机的查询请求。  
-2. SmartDNS将查询请求发送到多个上游DNS服务器，可采用标准UDP查询，非标准端口UDP查询，及TCP查询。  
-3. 上游DNS服务器返回域名对应的Server IP地址列表。SmartDNS检测与本地网络访问速度最快的Server IP。  
-4. 将访问速度最快的Server IP返回给本地客户端。  
-
-## 使用
-
-### 下载配套安装包  
-
---------------
-
-下载配套版本的SmartDNS安装包，对应安装包配套关系如下。
-
-|系统 |安装包|说明
-|-----|-----|-----
-|标准Linux系统(树莓派)| smartdns.xxxxxxxx.armhf.deb|支持树莓派Raspbian stretch，Debian 9系统。
-|标准Linux系统(Armbian arm64)| smartdns.xxxxxxxx.arm64.deb|支持ARM64的Debian stretch，Debian 9系统。
-|标准Linux系统(x86_64)| smartdns.xxxxxxxx.x86_64.tar.gz|支持x86_64 Linux 系统。
-|Windows 10 WSL (ubuntu)| smartdns.xxxxxxxx.x86_64.tar.gz|支持Windows 10 WSL ubuntu系统。
-|标准Linux系统(x86)| smartdns.xxxxxxxx.x86.tar.gz|支持x86系统。
-|华硕原生固件(optware)|smartdns.xxxxxxx.mipsbig.ipk|支持MIPS大端架构的系统，如RT-AC55U, RT-AC66U.
-|华硕原生固件(optware)|smartdns.xxxxxxx.mipsel.ipk|支持MIPS小端架构的系统。
-|华硕原生固件(optware)|smartdns.xxxxxxx.arm.ipk|支持arm小端架构的系统，如RT-AC68U。
-|Padavan|smartdns.xxxxxxx.mipselsf.ipk|padavan固件。
-|openwrt 15.01|smartdns.xxxxxxxx.ar71xx.ipk|支持AR71XX MIPS系统。
-|openwrt 15.01|smartdns.xxxxxxxx.ramips_24kec.ipk|支持MT762X等小端路由器
-|openwrt 15.01(潘多拉)|smartdns.xxxxxxxx.mipsel_24kec_dsp.ipk|支持MT7620系列的潘多拉固件
-|openwrt 15.01(潘多拉)|smartdns.xxxxxxxx.mips_74kc_dsp2.ipk|支持AR71xx系列的潘多拉固件
-|openwrt 18.06|smartdns.xxxxxxxx.mips_24kc.ipk|支持AR71XX MIPS系统。
-|openwrt 18.06|smartdns.xxxxxxxx.mipsel_24kc.ipk|支持MT726X等小端路由器
-|openwrt 18.06|smartdns.xxxxxxxx.x86_64.ipk|支持x86_64路由器
-|openwrt 18.06|smartdns.xxxxxxxx.i386_pentium4.ipk|支持x86路由器
-|openwrt 18.06|smartdns.xxxxxxxxxxx.arm_cortex-a9.ipk|支持arm A9核心CPU的路由器
-|openwrt 18.06|smartdns.xxxxxxxxx.arm_cortex-a7_neon-vfpv4.ipk|支持arm A7核心CPU的路由器
-|openwrt LUCI|luci-app-smartdns.xxxxxxxxx.xxxx.all.ipk|openwrt管理统一界面
-
-* openwrt系统CPU架构比较多，上述表格未列出所有支持系统，请查看CPU架构后下载。
-* merlin梅林固件理论和华硕固件一致，所以根据硬件类型安装相应的ipk包即可。（梅林暂时未验证，有问题提交issue）
-* CPU架构可在路由器管理界面找到，查看方法：
-    登录路由器，点击`System`->`Software`，点击`Configuration` Tab页面，在opkg安装源中可找到对应软件架构，下载路径中可找到，如下，架构为ar71xx
-
-    ```shell
-    src/gz chaos_calmer_base http://downloads.openwrt.org/chaos_calmer/15.05/ar71xx/generic/packages/base
-    ```
-
-* 或ssh登录系统后通过如下命令查询软件架构：
-
-  * **openwrt系列命令**
-
-    ```shell
-    opkg print_architecture
-    ```
-
-  * **optware系列命令**
-
-    ```shell
-    ipkg print_architecture
-    ```
-
-  * **debian系列命令**
-
-    ```shell
-    dpkg --print-architecture
-    ```
-
-  * **例如**
-
-    下面的查询结果`arch ar71xx 10`表示ar71xx系列架构，选择`smartdns.xxxxxxxx.ar71xx.ipk`安装包
-
-    ```shell
-    root@OpenWrt:~# opkg print_architecture
-    arch all 1
-    arch noarch 1
-    arch ar71xx 10
-    ```
-
-* **请在Release页面下载：[点击此处下载](https://github.com/pymumu/smartdns/releases)**
-
-```shell
-https://github.com/pymumu/smartdns/releases
-```
-
-* 各种设备的安装步骤，请参考后面的章节。
-
-### 标准Linux系统安装/树莓派/X86_64系统
-
---------------
-
-1. 安装
-
-    下载配套安装包`smartdns.xxxxxxxx.armhf.deb`，并上传到Linux系统中。 执行如下命令安装
-
-    ```shell
-    dpkg -i smartdns.xxxxxxxx.armhf.deb
-    ```
-
-    x86系统下载配套安装包`smartdns.xxxxxxxx.x86-64.tar.gz`, 并上传到Linux系统中。 执行如下命令安装
-
-    ```shell
-    tar zxf smartdns.xxxxxxxx.x86-64.tar.gz
-    cd smartdns
-    chmod +x ./install
-    ./install -i
-    ```
-
-1. 修改配置
-
-    安装完成后，可配置smartdns的上游服务器信息。具体配置参数参考`配置参数`说明。  
-    一般情况下，只需要增加`server [IP]:port`, `server-tcp [IP]:port`配置项，
-    尽可能配置多个上游DNS服务器，包括国内外的服务器。配置参数请查看`配置参数`章节。
-
-    ```shell
-    vi /etc/smartdns/smartdns.conf
-    ```
-
-1. 启动服务
-
-    ```shell
-    systemctl enable smartdns
-    systemctl start smartdns
-    ```
-
-1. 将DNS请求转发的SmartDNS解析。
-
-    修改本地路由器的DNS服务器，将DNS服务器配置为SmartDNS。
-    * 登录到本地网络的路由器中，配置树莓派分配静态IP地址。
-    * 修改WAN口或者DHCP DNS为树莓派IP地址。  
-    注意：  
-    I. 每款路由器配置方法不尽相同，请百度搜索相关的配置方法。  
-    II.华为等路由器可能不支持配置DNS为本地IP，请修改PC端，手机端DNS服务器为树莓派IP。
-
-1. 检测服务是否配置成功。
-
-    使用`nslookup -querytype=ptr 0.0.0.0`查询域名  
-    看命令结果中的`name`项目是否显示为`smartdns`或`主机名`，如`smartdns`则表示生效  
-
-    ```shell
-    pi@raspberrypi:~/code/smartdns_build $ nslookup -querytype=ptr 0.0.0.0
-    Server:         192.168.1.1
-    Address:        192.168.1.1#53
-
-    Non-authoritative answer:
-    0.0.0.0.in-addr.arpa  name = smartdns.
-    ```
-
-### openwrt/LEDE
-
---------------
-
-1. 安装
-
-    将软件使用winscp上传到路由器的/root目录，执行如下命令安装  
-
-    ```shell
-    opkg install smartdns.xxxxxxxx.xxxx.ipk
-    opkg install luci-app-smartdns.xxxxxxxx.xxxx.all.ipk
-    ```
-
-1. 修改配置
-
-    登录openwrt管理页面，打开`Services`->`SmartDNS`进行配置。
-    * 在`Upstream Servers`增加上游DNS服务器配置，建议配置多个国内外DNS服务器。
-    * 在`Domain Address`指定特定域名的IP地址，可用于广告屏蔽。
-
-1. 启用服务
-
-   SmartDNS服务生效方法有两种，`一种是直接作为主DNS服务`；`另一种是作为dnsmasq的上游`。  
-   默认情况下，SmartDNS采用第一种方式。如下两种方式根据需求选择即可。
-
-1. 启用方法一：作为主DNS(默认方案)
-
-    * **启用smartdns的53端口重定向**
-
-        登录路由器，点击`Services`->`SmartDNS`->`redirect`，选择`重定向53端口到SmartDNS`启用53端口转发。
-
-    * **检测转发服务是否配置成功**
-
-        使用`nslookup -querytype=ptr 0.0.0.0`查询域名  
-        看命令结果中的`name`项目是否显示为`smartdns`或`主机名`，如`smartdns`则表示生效  
-
-        ```shell
-        pi@raspberrypi:~/code/smartdns_build $ nslookup -querytype=ptr 0.0.0.0
-        Server:         192.168.1.1
-        Address:        192.168.1.1#53
-
-        Non-authoritative answer:
-        0.0.0.0.in-addr.arpa  name = smartdns.
-        ```
-
-    * **界面提示重定向失败**
-
-        * 检查iptable，ip6table命令是否正确安装。
-        * openwrt 15.01系统不支持IPV6重定向，如网络需要支持IPV6，请将DNSMASQ上游改为smartdns，或者将smartdns的端口改为53，并停用dnsmasq。
-        * LEDE之后系统，请安装IPV6的nat转发驱动。点击`system`->`Software`，点击`update lists`更新软件列表后，安装`ip6tables-mod-nat`
-        * 使用如下命令检查路由规则是否生效。  
-
-        ```shell
-        iptables -t nat -L PREROUTING | grep REDIRECT
-        ```
-
-        * 如转发功能不正常，请使用方法二：作为DNSMASQ的上游。
-
-1. 方法二：作为DNSMASQ的上游
-
-    * **将dnsmasq的请求发送到smartdns**
-
-        登录路由器，点击`Services`->`SmartDNS`->`redirect`，选择`作为dnsmasq的上游服务器`设置dnsmasq的上游服务器为smartdns。
-
-    * **检测上游服务是否配置成功**
-
-        * 方法一：使用`nslookup -querytype=ptr 0.0.0.0`查询域名  
-        看命令结果中的`name`项目是否显示为`smartdns`或`主机名`，如`smartdns`则表示生效  
-
-        ```shell
-        pi@raspberrypi:~/code/smartdns_build $ nslookup -querytype=ptr 0.0.0.0
-        Server:         192.168.1.1
-        Address:        192.168.1.1#53
-
-        Non-authoritative answer:
-        0.0.0.0.in-addr.arpa  name = smartdns.
-        ```
-
-        * 方法二：使用`nslookup`查询`www.baidu.com`域名，查看结果中百度的IP地址是否`只有一个`，如有多个IP地址返回，则表示未生效，请多尝试几个域名检查。
-
-        ```shell
-        pi@raspberrypi:~ $ nslookup www.baidu.com 192.168.1.1
-        Server:         192.168.1.1
-        Address:        192.168.1.1#53
-
-        Non-authoritative answer:
-        www.baidu.com   canonical name = www.a.shifen.com.
-        Name:   www.a.shifen.com
-        Address: 14.215.177.38
-        ```
-
-1. 启动服务
-
-    勾选配置页面中的`Enable(启用)`来启动SmartDNS
-
-1. 注意：
-
-    * 如已经安装chinaDNS，建议将chinaDNS的上游配置为SmartDNS。
-    * SmartDNS默认情况，将53端口的请求转发到SmartDNS的本地端口，由`Redirect`配置选项控制。
-
-### 华硕路由器原生固件/梅林固件
-
---------------
-
-说明：梅林固件派生自华硕固件，理论上可以直接使用华硕配套的安装包使用。但目前未经验证，如有问题，请提交issue。
-
-1. 准备
-
-    在使用此软件时，需要确认路由器是否支持U盘，并准备好U盘一个。
-
-1. 启用SSH登录
-
-    登录管理界面，点击`系统管理`->点击`系统设置`，配置`Enable SSH`为`Lan Only`。  
-    SSH登录用户名密码与管理界面相同。
-
-1. 下载`Download Master`
-
-    在管理界面点击`USB相关应用`->点击`Download Master`下载。  
-    下载完成后，启用`Download Master`，如果不需要下载功能，此处可以卸载`Download Master`，但要保证卸载前Download Master是启用的。  
-
-1. 安装SmartDNS
-
-    将软件使用winscp上传到路由器的`/tmp/mnt/sda1`目录。（或网上邻居复制到sda1共享目录）
-
-    ```shell
-    ipkg install smartdns.xxxxxxx.mipsbig.ipk
-    ```
-
-1. 重启路由器生效服务
-
-    待路由器启动后，使用`nslookup -querytype=ptr 0.0.0.0`查询域名  
-    看命令结果中的`name`项目是否显示为`smartdns`或`主机名`，如`smartdns`则表示生效  
-
-    ```shell
-    pi@raspberrypi:~/code/smartdns_build $ nslookup -querytype=ptr 0.0.0.0
-    Server:         192.168.1.1
-    Address:        192.168.1.1#53
-
-    Non-authoritative answer:
-    0.0.0.0.in-addr.arpa  name = smartdns.
-    ```
-
-1. 额外说明
-
-    上述过程，smartdns将安装到U盘根目录，采用optware的模式运行。
-    其目录结构如下： （此处仅列出smartdns相关文件）  
-
-    ```shell
-    U盘
-    └── asusware.mipsbig
-            ├── bin
-            ├── etc
-            |    ├── smartdns
-            |    |     └── smartdns.conf
-            |    └── init.d
-            |          └── S50smartdns
-            ├── lib
-            ├── sbin
-            ├── usr
-            |    └── sbin
-            |          └── smartdns
-            ....
-    ```
-
-    如要修改配置，可以ssh登录路由器，使用vi命令修改  
-
-    ```shell
-    vi /opt/etc/smartdns/smartdns.conf
-    ```
-
-    也可以通过网上邻居修改，网上邻居共享目录`sda1`看不到`asusware.mipsbig`目录，但可以直接在`文件管理器`中输入`asusware.mipsbig\etc\init.d`访问
-
-    ```shell
-    \\192.168.1.1\sda1\asusware.mipsbig\etc\init.d
-    ```
-
-### optware/entware
-
---------------
-
-1. 准备
-
-    在使用此软件时，需要确认路由器是否支持U盘，并准备好U盘一个。
-
-1. 安装SmartDNS
-
-    将软件使用winscp上传到路由器的`/tmp`目录。
-
-    ```shell
-    ipkg install smartdns.xxxxxxx.mipsbig.ipk
-    ```
-
-1. 修改smartdns配置
-
-    ```shell
-    vi /opt/etc/smartdns/smartdns.conf
-    ```
-
-    另外，如需支持IPV6，可设置工作模式为`2`，将dnsmasq的DNS服务禁用，smartdns为主用DNS服务器。将文件`/opt/etc/smartdns/smartdns-opt.conf`，中的`SMARTDNS_WORKMODE`修改为2.
-
-    ```shell
-    SMARTDNS_WORKMODE="2"
-    ```
-
-1. 重启路由器生效服务
-
-    待路由器启动后，使用`nslookup -querytype=ptr 0.0.0.0`查询域名  
-    看命令结果中的`name`项目是否显示为`smartdns`或`主机名`，如`smartdns`则表示生效  
-
-    ```shell
-    pi@raspberrypi:~/code/smartdns_build $ nslookup -querytype=ptr 0.0.0.0
-    Server:         192.168.1.1
-    Address:        192.168.1.1#53
-
-    Non-authoritative answer:
-    0.0.0.0.in-addr.arpa  name = smartdns.
-    ```
-
-    注意：若服务没有自动启动，则需要设置optwre/entware自动启动，具体方法参考optware/entware的文档。
-
-### Windows 10 WSL安装/WSL ubuntu
-
---------------
-
-1. 安装Windows 10 WSL ubuntu系统
-
-    安装Windows 10 WSL运行环境，发行版本选择ubuntu系统。安装步骤请参考[WSL安装说明](https://docs.microsoft.com/en-us/windows/wsl/install-win10)
-
-1. 安装smartdns
-
-    下载安装包`smartdns.xxxxxxxx.x86_64.tar.gz`，并解压到D盘根目录。解压后目录如下：
-
-    ```shell
-    D:\SMARTDNS
-    ├─etc
-    │  ├─default
-    │  ├─init.d
-    │  └─smartdns
-    ├─package
-    │  └─windows
-    ├─src
-    └─systemd
-
-    ```
-
-    双击`D:\smartdns\package\windows`目录下的`install.bat`进行安装。要求输入密码时，请输入`WLS ubuntu`的密码。
-
-1. 修改配置
-
-    记事本打开`D:\smartdns\etc\smartdns`目录中的`smartdns.conf`配置文件配置smartdns。具体配置参数参考`配置参数`说明。  
-    一般情况下，只需要增加`server [IP]:port`, `server-tcp [IP]:port`配置项，
-    尽可能配置多个上游DNS服务器，包括国内外的服务器。配置参数请查看`配置参数`章节。
-
-1. 重新加载配置
-
-    双击`D:\smartdns\package\windows`目录下的`reload.bat`进行安装。要求输入密码时，请输入`WLS ubuntu`的密码。
-
-1. 将DNS请求转发的SmartDNS解析。
-
-    将Windows的默认DNS服务器修改为`127.0.0.1`，具体步骤参考[IP配置](https://support.microsoft.com/zh-cn/help/15089/windows-change-tcp-ip-settings)
-
-1. 检测服务是否配置成功。
-
-    使用`nslookup -querytype=ptr 0.0.0.0`查询域名  
-    看命令结果中的`name`项目是否显示为`smartdns`或`主机名`，如`smartdns`则表示生效  
-
-    ```shell
-    pi@raspberrypi:~/code/smartdns_build $ nslookup -querytype=ptr 0.0.0.0
-    Server:         192.168.1.1
-    Address:        192.168.1.1#53
-
-    Non-authoritative answer:
-    0.0.0.0.in-addr.arpa  name = smartdns.
-    ```
-
-## 配置参数
-
-|参数|功能|默认值|配置值|例子|
-|--|--|--|--|--|
-|server-name|DNS服务器名称|操作系统主机名/smartdns|符合主机名规格的字符串|server-name smartdns
-|bind|DNS监听端口号|[::]:53|IP:PORT|bind 192.168.1.1:53
-|bind-tcp|TCP模式DNS监听端口号|[::]:53|IP:PORT|bind-tcp 192.168.1.1:53
-|cache-size|域名结果缓存个数|512|数字|cache-size 512
-|tcp-idle-time|TCP链接空闲超时时间|120|数字|tcp-idle-time 120
-|rr-ttl|域名结果TTL|远程查询结果|大于0的数字|rr-ttl 600
-|rr-ttl-min|允许的最小TTL值|远程查询结果|大于0的数字|rr-ttl-min 60
-|rr-ttl-max|允许的最大TTL值|远程查询结果|大于0的数字|rr-ttl-max 600
-|log-level|设置日志级别|error|fatal,error,warn,notice,info,debug|log-level error
-|log-file|日志文件路径|/var/log/smartdns.log|路径|log-file /var/log/smartdns.log
-|log-size|日志大小|128K|数字+K,M,G|log-size 128K
-|log-num|日志归档个数|2|数字|log-num 2
-|audit-enable|设置审计启用|no|[yes\|no]|audit-enable yes
-|audit-file|审计文件路径|/var/log/smartdns-audit.log|路径|audit-file /var/log/smartdns-audit.log
-|audit-size|审计大小|128K|数字+K,M,G|audit-size 128K
-|audit-num|审计归档个数|2|数字|audit-num 2
-|conf-file|附加配置文件|无|文件路径|conf-file /etc/smartdns/smartdns.more.conf
-|server|上游UDP DNS|无|可重复<br>`[ip][:port]`：服务器IP，端口可选。<br>`[-blacklist-ip]`：blacklist-ip参数指定使用blacklist-ip配置IP过滤结果。<br>`[-check-edns]`：edns过滤。<br>`[-group [group] ...]`：DNS服务器所属组，比如office, foreign，和nameserver配套使用。<br>`[-exclude-default-group]`：将DNS服务器从默认组中排除| server 8.8.8.8:53 -blacklist-ip -check-edns -group g1
-|server-tcp|上游TCP DNS|无|可重复<br>`[ip][:port]`：服务器IP，端口可选。<br>`[-blacklist-ip]`：blacklist-ip参数指定使用blacklist-ip配置IP过滤结果。<br>`[-group [group] ...]`：DNS服务器所属组，比如office, foreign，和nameserver配套使用。<br>`[-exclude-default-group]`：将DNS服务器从默认组中排除| server-tcp 8.8.8.8:53
-|server-tls|上游TLS DNS|无|可重复<br>`[ip][:port]`：服务器IP，端口可选。<br>`[-spki-pin [sha256-pin]]`: TLS合法性校验SPKI值，base64编码的sha256 SPKI pin值<br>`[-blacklist-ip]`：blacklist-ip参数指定使用blacklist-ip配置IP过滤结果。<br>`[-group [group] ...]`：DNS服务器所属组，比如office, foreign，和nameserver配套使用。<br>`[-exclude-default-group]`：将DNS服务器从默认组中排除| server-tls 8.8.8.8:853
-|server-https|上游HTTPS DNS|无|可重复<br>`https://[host][:port]/path`：服务器IP，端口可选。<br>`[-spki-pin [sha256-pin]]`: TLS合法性校验SPKI值，base64编码的sha256 SPKI pin值<br>`[-blacklist-ip]`：blacklist-ip参数指定使用blacklist-ip配置IP过滤结果。<br>`[-group [group] ...]`：DNS服务器所属组，比如office, foreign，和nameserver配套使用。<br>`[-exclude-default-group]`：将DNS服务器从默认组中排除| server-https https://cloudflare-dns.com/dns-query
-|address|指定域名IP地址|无|address /domain/[ip\|-\|-4\|-6\|#\|#4\|#6] <br>`-`表示忽略 <br>`#`表示返回SOA <br>`4`表示IPV4 <br>`6`表示IPV6| address /www.example.com/1.2.3.4
-|nameserver|指定域名使用server组解析|无|nameserver /domain/[group\|-], `group`为组名，`-`表示忽略此规则，配套server中的`-group`参数使用| nameserver /www.example.com/office
-|ipset|域名IPSET|None|ipset /domain/[ipset\|-], `-`表示忽略|ipset /www.example.com/pass
-|ipset-timeout|设置IPSET超时功能启用|auto|[yes]|ipset-timeout yes
-|bogus-nxdomain|假冒IP地址过滤|无|[ip/subnet]，可重复| bogus-nxdomain 1.2.3.4/16
-|ignore-ip|忽略IP地址|无|[ip/subnet]，可重复| ignore-ip 1.2.3.4/16
-|blacklist-ip|黑名单IP地址|无|[ip/subnet]，可重复| blacklist-ip 1.2.3.4/16
-|force-AAAA-SOA|强制AAAA地址返回SOA|no|[yes\|no]|force-AAAA-SOA yes
-|prefetch-domain|域名预先获取功能|no|[yes\|no]|prefetch-domain yes
-|dualstack-ip-selection|双栈IP优选|no|[yes\|no]|dualstack-ip-selection yes
-|dualstack-ip-selection-threshold|双栈IP优选阈值|30ms|毫秒|dualstack-ip-selection-threshold [0-1000]
-
-## FAQ
-
-1. SmartDNS和DNSMASQ有什么区别  
-    SMARTDNS在设计上并不是替换DNSMASQ的，SMARTDNS主要功能集中在DNS解析增强上，增强部分有：
-    * 多上游服务器并发请求，对结果进行测速后，返回最佳结果；
-    * address，ipset域名匹配采用高效算法，查询匹配更加快速高效，路由器设备依然高效。
-    * 域名匹配支持忽略特定域名，可单独匹配IPv4， IPV6，支持多样化定制。
-    * 针对广告屏蔽功能做增强，返回SOA，屏蔽广告效果更佳；
-    * IPV4，IPV6双栈IP优选机制，在双网情况下，选择最快的网络通讯。
-    * 支持最新的TLS, HTTPS协议，提供安全的DNS查询能力。
-    * DNS防抢答机制，及多种机制避免DNS污染。
-    * ECS支持，是查询结果更佳准确。
-    * IP黑名单，忽略IP机制，使域名查询更佳准确。
-    * 域名预查询，访问常用网站更加快速。
-    * 域名TTL可指定，使访问更快速。
-    * 高速缓存机制，使访问更快速。
-    * 异步日志，审计机制，在记录信息的同时不影响DNS查询性能。
-    * 域名组（group）机制，特定域名使用特定上游服务器组查询，避免隐私泄漏。
-
-1. 如何配置上游服务器最佳。  
-    smartdns有测速机制，在配置上游服务器时，建议配置多个上游DNS服务器，包含多个不同区域的服务器，但总数建议在10个左右。推荐配置  
-    * 运营商DNS。
-    * 国内公共DNS，如`119.29.29.29`, `223.5.5.5`。
-    * 国外公共DNS，如`8.8.8.8`, `8.8.4.4`。
-
-    对于特定的域名，如果有污染情况，可以启用防污染机制。
-
-1. 如何启用审计日志  
-    审计日志记录客户端请求的域名，记录信息包括，请求时间，请求IP，请求域名，请求类型，如果要启用审计日志，在配置界面配置`audit-enable yes`启用，`audit-size`, `audit-file`, `audit-num`分别配置审计日志文件大小，审计日志文件路径，和审计日志文件个数。审计日志文件将会压缩存储以节省空间。
-
-1. 如何避免隐私泄漏  
-    smartdns默认情况下，会将请求发送到所有配置的DNS服务器，若上游DNS服务器使用DNS，或记录日志，将会导致隐私泄漏。为避免隐私泄漏，请尽量：  
-    * 配置使用可信的DNS服务器。
-    * 优先使用TLS查询。
-    * 设置上游DNS服务器组。
-
-1. 如何屏蔽广告  
-    smartdns具备高性能域名匹配算法，通过域名方式过滤广告非常高效，如要屏蔽广告，只需要配置类似如下记录即可，如，屏蔽`*.ad.com`，则配置：
-
-    ```sh
-    address /ad.com/#
-    ```
-
-    域名的使后缀模式，过滤*.ad.com，`#`表示返回SOA，使屏蔽广告更加高效，如果要单独屏蔽IPV4， 或IPV6， 在`#`后面增加数字，如`#4`表示对IPV4生效。若想忽略特定子域名的屏蔽，可配置如下，如忽略`pass.ad.com`，可配置如下：
-
-    ```sh
-    address /pass.ad.com/-
-    ```
-
-1. 如何使用DNS查询分流  
-    某些情况下，需要将有些域名使用特定的DNS服务器来查询来做到DNS分流。比如。
-
-    ```sh
-    .home -> 192.168.1.1
-    .office -> 10.0.0.1
-    ```
-
-    .home 结尾的域名发送到192.168.1.1解析  
-    .office 结尾的域名发送到10.0.0.1解析
-    其他域名采用默认的模式解析。
-    这种情况的分流配置如下：
-
-    ```sh
-    #配置上游，用-group指定组名，用-exclude-default-group将服务器从默认组中排除。
-    server 192.168.1.1 -group home -exclude-default-group
-    server 10.0.0.1 -group office -exclude-default-group
-    server 8.8.8.8
-
-    #配置解析的域名
-    nameserver /.home/home
-    nameserver /.office/office
-    ```
-
-    通过上述配置即可实现DNS解析分流
-
-1. IPV4, IPV6双栈IP优选功能如何使用  
-    目前IPV6已经开始普及，但IPV6网络在速度上，某些情况下还不如IPV4，为在双栈网络下获得较好的体验，smartdns提供来双栈IP优选机制，同一个域名，若IPV4的速度远快与IPV6，那么smartdns就会阻止IPV6的解析，让PC使用IPV4访问，具体配置文件通过`dualstack-ip-selection yes`启用此功能，通过`dualstack-ip-selection-threshold [time]`来修改阈值。如果要完全禁止IPV6 AAAA记录解析，可设置`force-AAAA-SOA yes`。
-
-1. 如何提高cache效率，加快访问速度  
-    smartdns提供了域名缓存机制，对查询的域名，进行缓存，缓存时间符合DNS TTL规范。为提高缓存命中率，可采用如下措施：  
-    * 适当增大cache的记录数  
-    通过`cache-size`来设置缓存记录数。  
-    查询压力大的环境下，并且有内存大的机器的情况下，可适当调大。  
-
-    * 适当设置最小TTL值  
-    通过`rr-ttl-min`将最低DNS TTL时间设置为一个合理值，延长缓存时间。  
-    建议是超时时间设置在10～30分钟，避免服务器域名变化时，查询到失效域名。
-
-    * 开启域名预获取功能  
-    通过`prefetch-domain yes`来启用域名预先获取功能，提高查询命中率。  
-    配合上述ttl超时时间，smartdns将在域名ttl即将超时使，再次发送查询请求，并缓存查询结果供后续使用。频繁访问的域名将会持续缓存。此功能将在空闲时消耗更多的CPU。
-
-## Donate
-
-如果你觉得此项目对你有帮助，请捐助我们，以使项目能持续发展，更加完善。
-
-### PayPal
-
-[![Support via PayPal](https://cdn.rawgit.com/twolfson/paypal-github-button/1.0.0/dist/button.svg)](https://paypal.me/PengNick/)
-
-### Alipay 支付宝
-
-![alipay](doc/alipay_donate.jpg)
-
-### Wechat 微信
-  
-![wechat](doc/wechat_donate.jpg)
-
-## 声明
-
-* `SmartDNS`著作权归属Nick Peng (pymumu at gmail.com)。
-* `SmartDNS`为免费软件，用户可以非商业性地复制和使用`SmartDNS`。
-* 禁止将 `SmartDNS` 用于商业用途。
-* 使用本软件的风险由用户自行承担，在适用法律允许的最大范围内，对因使用本产品所产生的损害及风险，包括但不限于直接或间接的个人损害、商业赢利的丧失、贸易中断、商业信息的丢失或任何其它经济损失，不承担任何责任。
-* 本软件不会未经用户同意收集任何用户信息。
-
-## 说明
-
-目前代码未开源，后续根据情况开源。

etc/init.d/smartdns

@@ -1,4 +1,19 @@
 #!/bin/sh
+#
+# Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+#
+# smartdns is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# smartdns is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 ### BEGIN INIT INFO
 # Provides:        smartdns
@@ -19,14 +34,14 @@ test -x $SMARTDNS || exit 5
 
 case $1 in
 	start)
-		$SMARTDNS $SMART_DNS_OPTS
+		$SMARTDNS "$SMART_DNS_OPTS"
 		while true; do
 			if [ -e "$PIDFILE" ]; then
 				break;
 			fi
 			sleep .5
 		done
-		PID="`cat $PIDFILE 2>/dev/null`"
+		PID="$(cat $PIDFILE 2>/dev/null)"
 		if [ -z "$PID" ]; then
 			echo "start smartdns server failed."
 			exit 1
@@ -42,25 +57,25 @@ case $1 in
 			echo "smartdns server is stopped."
 			exit 0
 		fi
-		PID="`cat $PIDFILE 2>/dev/null`"
+		PID="$(cat $PIDFILE 2>/dev/null)"
 		if [ ! -e "/proc/$PID" ] || [ -z "$PID" ]; then
 			echo "smartdns server is stopped"
 			exit 0
 		fi
 
-		kill -TERM $PID
+		kill -TERM "$PID"
 		if [ $? -ne 0 ]; then
 			echo "Stop smartdns server failed."
 			exit 1;
 		fi
-		rm -f $PIDFILE
+		rm -f "$PIDFILE"
 		echo "Stop smartdns server success."
 		;;
 	restart)
-		$0 stop && sleep 1 && $0 start
+		"$0" stop && sleep 1 && "$0" start
 		;;
 	status)
-		PID="`cat $PIDFILE 2>/dev/null`"
+		PID="$(cat "$PIDFILE" 2>/dev/null)"
 		if [ ! -e "/proc/$PID" ] || [ -z "$PID" ]; then
 			echo "smartdns server is not running."
 			exit 1

etc/smartdns/smartdns.conf

@@ -1,4 +1,4 @@
-# dns server name, defaut is host name
+# dns server name, default is host name
 # server-name, 
 # example:
 #   server-name smartdns
@@ -8,14 +8,28 @@
 # conf-file [file]
 # conf-file blacklist-ip.conf
 
-# dns server bind ip and port, default dns server port is 53.
+# dns server bind ip and port, default dns server port is 53, support binding multi ip and port
-# bind [IP]:port, udp server
+# bind udp server
-# bind-tcp [IP]:port, tcp server
+#   bind [IP]:[port] [-group [group]] [-no-rule-addr] [-no-rule-nameserver] [-no-rule-ipset] [-no-speed-check] [-no-cache] [-no-rule-soa] [-no-dualstack-selection]
+# bind tcp server
+#   bind-tcp [IP]:[port] [-group [group]] [-no-rule-addr] [-no-rule-nameserver] [-no-rule-ipset] [-no-speed-check] [-no-cache] [-no-rule-soa] [-no-dualstack-selection]
+# option:
+#   -group: set domain request to use the appropriate server group.
+#   -no-rule-addr: skip address rule.
+#   -no-rule-nameserver: skip nameserver rule.
+#   -no-rule-ipset: skip ipset rule.
+#   -no-speed-check: do not check speed.
+#   -no-cache: skip cache.
+#   -no-rule-soa: Skip address SOA(#) rules.
+#   -no-dualstack-selection: Disable dualstack ip selection.
+#   -force-aaaa-soa: force AAAA query return SOA.
 # example: 
-#   IPV4: :53
+#  IPV4: 
-#   IPV6  [::]:53
+#    bind :53
-# bind-tcp [::]:53
+#    bind :6053 -group office -no-speed-check
-
+#  IPV6:
+#    bind [::]:53
+#    bind-tcp [::]:53
 bind [::]:53
 
 # tcp connection idle timeout
@@ -30,15 +44,33 @@ cache-size 512
 # prefetch-domain [yes|no]
 # prefetch-domain yes
 
+# cache serve expired 
+# serve-expired [yes|no]
+# serve-expired yes
+
+# cache serve expired TTL
+# serve-expired-ttl [num]
+# serve-expired-ttl 0
+
 # List of hosts that supply bogus NX domain results 
 # bogus-nxdomain [ip/subnet]
 
 # List of IPs that will be filtered when nameserver is configured -blacklist-ip parameter
 # blacklist-ip [ip/subnet]
 
+# List of IPs that will be accepted when nameserver is configured -whitelist-ip parameter
+# whitelist-ip [ip/subnet]
+
 # List of IPs that will be ignored
 # ignore-ip [ip/subnet]
 
+# speed check mode
+# speed-check-mode [ping|tcp:port|none|,]
+# example:
+#   speed-check-mode ping,tcp:80
+#   speed-check-mode tcp:443,ping
+#   speed-check-mode none
+
 # force AAAA query return SOA
 # force-AAAA-SOA [yes|no]
 
@@ -72,39 +104,56 @@ log-level info
 # log-num 2
 
 # dns audit
-# audit-enable: enable or disable audit [yes|no]
+# audit-enable [yes|no]: enable or disable audit.
 # audit-enable yes
+# audit-SOA [yes|no]: enable or disable log soa result.
 # audit-size size of each audit file, support k,m,g
 # audit-file /var/log/smartdns-audit.log
 # audit-size 128k
 # audit-num 2
 
+# certificate file
+# ca-file [file]
+# ca-file /etc/ssl/certs/ca-certificates.crt
+
+# certificate path
+# ca-path [path]
+# ca-path /etc/ss/certs
+
 # remote udp dns server list
-# server [IP]:[PORT] [-blacklist-ip] [-check-edns] [-group [group] ...] [-exclude-default-group]
+# server [IP]:[PORT] [-blacklist-ip] [-whitelist-ip] [-check-edns] [-group [group] ...] [-exclude-default-group]
 # default port is 53
 #   -blacklist-ip: filter result with blacklist ip
+#   -whitelist-ip: filter result whth whitelist ip,  result in whitelist-ip will be accepted.
 #   -check-edns: result must exist edns RR, or discard result.
 #   -group [group]: set server to group, use with nameserver /domain/group.
 #   -exclude-default-group: exclude this server from default group.
 # server 8.8.8.8 -blacklist-ip -check-edns -group g1 -group g2
 
 # remote tcp dns server list
-# server-tcp [IP]:[PORT] [-blacklist-ip] [-group [group] ...] [-exclude-default-group]
+# server-tcp [IP]:[PORT] [-blacklist-ip] [-whitelist-ip] [-group [group] ...] [-exclude-default-group]
 # default port is 53
 # server-tcp 8.8.8.8
 
 # remote tls dns server list
-# server-tls [IP]:[PORT] [-blacklist-ip] [-spki-pin [sha256-pin]] [-group [group] ...] [-exclude-default-group]
+# server-tls [IP]:[PORT] [-blacklist-ip] [-whitelist-ip] [-spki-pin [sha256-pin]] [-group [group] ...] [-exclude-default-group]
 #   -spki-pin: TLS spki pin to verify.
-# Get SKPI with this command:
+#   -tls-host-verify: cert hostname to verify.
+#   -host-name: TLS sni hostname.
+#   -no-check-certificate: no check certificate.
+# Get SPKI with this command:
 #    echo | openssl s_client -connect '[ip]:853' | openssl x509 -pubkey -noout | openssl pkey -pubin -outform der | openssl dgst -sha256 -binary | openssl enc -base64
 # default port is 853
 # server-tls 8.8.8.8
 # server-tls 1.0.0.1
 
 # remote https dns server list
-# server-https https://[host]:[port]/path [-blacklist-ip] [-spki-pin [sha256-pin]] [-group [group] ...] [-exclude-default-group]
+# server-https https://[host]:[port]/path [-blacklist-ip] [-whitelist-ip] [-spki-pin [sha256-pin]] [-group [group] ...] [-exclude-default-group]
 #   -spki-pin: TLS spki pin to verify.
+#   -tls-host-verify: cert hostname to verify.
+#   -host-name: TLS sni hostname.
+#   -http-host: http host.
+#   -no-check-certificate: no check certificate.
 # default port is 443
 # server-https https://cloudflare-dns.com/dns-query
 
@@ -127,3 +176,11 @@ log-level info
 # ipset /www.example.com/block, set ipset with ipset name of block 
 # ipset /www.example.com/-, ignore this domain
 
+# set domain rules
+# domain-rules /domain/ [-speed-check-mode [...]]
+# rules:
+#   -speed-check-mode [mode]: speed check mode
+#                             speed-check-mode [ping|tcp:port|none|,]
+#   -address [address|-]: same as address option
+#   -nameserver [group|-]: same as nameserver option
+#   -ipset [ipset|-]: same as ipset option

package/build-pkg.sh

@@ -0,0 +1,182 @@
+#!/bin/sh
+# Copyright (C) 2018-2019 Nick Peng (pymumu@gmail.com)
+
+CURR_DIR=$(cd $(dirname $0);pwd)
+VER="`date +"1.%Y.%m.%d-%H%M"`"
+CODE_DIR="$CURR_DIR/.."
+IS_BUILD_SMARTDNS=1
+OUTPUTDIR=$CURR_DIR
+export CC
+export STRIP
+
+showhelp()
+{
+	echo "Usage: $0 [OPTION]"
+	echo "Options:"
+	echo " --platform [luci|luci-compat|debian|openwrt|optware|linux]    build for platform. "
+	echo " --arch [all|armhf|arm64|x86-64|...]               build for architecture, e.g. "
+	echo " --cross-tool [cross-tool]                         cross compiler, e.g. mips-openwrt-linux-"
+	echo ""
+	echo "Advance Options:"
+	echo " --static                                          static link smartdns"
+	echo " --only-package                                    only package, not build source"
+	echo " --filearch [arch]                                 output file arch, default: equal --arch"
+	echo " --outputdir [dir]                                 output package to specific directory"
+	echo " "
+	echo "Example:"
+	echo " build luci:"
+	echo "   $0 --platform luci"
+	echo " build luci:"
+	echo "   $0 --platform luci-compat"
+	echo " build debian:"
+	echo "   $0 --platform debian --arch x86-64"
+	echo " build raspbian pi:"
+	echo "   $0 --platform debian --arch armhf"
+	echo " build optware mips:"
+	echo "   $0 --platform optware --arch mipsbig"
+	echo " build openwrt mips:"
+	echo "   $0 --platform openwrt --arch mips_24kc"
+	echo " build generic linux:"
+	echo "   $0 --platform linux --arch x86-64"
+}
+
+build_smartdns()
+{
+	if [ "$PLATFORM" != "luci" ]; then
+		make -C $CODE_DIR clean $MAKE_ARGS
+		make -C $CODE_DIR all -j8 VER=$VER $MAKE_ARGS
+		if [ $? -ne 0 ]; then
+			echo "make smartdns failed"
+			exit 1
+		fi
+	fi
+
+	$STRIP -d $CODE_DIR/src/smartdns >/dev/null 2>&1
+
+	return 0
+}
+
+
+build()
+{
+	echo "build package for $PLATFORM"
+
+	if [ $IS_BUILD_SMARTDNS -eq 1 ]; then
+		build_smartdns
+		if [ $? -ne 0 ]; then
+			return 1
+		fi
+	fi
+
+	chmod +x $CODE_DIR/package/$PLATFORM/make.sh
+	$CODE_DIR/package/$PLATFORM/make.sh -o $CURR_DIR --arch $ARCH --ver $VER --filearch $FILEARCH -o $OUTPUTDIR
+	if [ $? -ne 0 ]; then
+		echo "build package for $PLATFORM failed"
+		return 1
+	fi
+
+	echo "build package for $PLATFORM success."
+	return 0
+}
+
+main()
+{
+	OPTS=`getopt -o o:h --long arch:,filearch:,ver:,platform:,cross-tool:,static,only-package,outputdir: \
+		-n  "" -- "$@"`
+
+	if [ "$#" -le "1" ]; then
+		showhelp
+		exit 1
+	fi
+
+	if [ $? != 0 ] ; then echo "Terminating..." >&2 ; exit 1 ; fi
+
+	# Note the quotes around `$TEMP': they are essential!
+	eval set -- "$OPTS"
+
+	while true; do
+		case "$1" in
+		--arch)
+			ARCH="$2"
+			shift 2;;
+		--filearch)
+			FILEARCH="$2"
+			shift 2;;
+		--platform)
+			PLATFORM="$2"
+			shift 2;;
+		--cross-tool)
+			CROSS_TOOL="$2"
+			shift 2;;
+		--static)
+			export STATIC="yes"
+			shift 1;;
+		--only-package)
+			IS_BUILD_SMARTDNS=0
+			shift 1;;
+		--outputdir)
+			OUTPUTDIR="$2"
+			shift 2;;
+		--ver)
+			VER="$2"
+			shift 2;;
+		-h | --help )
+			showhelp
+			return 0
+			shift ;;
+		-- ) shift; break ;;
+		* ) break ;;
+		esac
+	done
+
+	if [ -z "$PLATFORM" ]; then
+		echo "please input platform"
+		echo "run $0 -h for help."
+		return 1
+	fi
+	
+	if [ "$PLATFORM" = "luci" ]; then
+		ARCH="all"
+	fi
+
+	if [ -z "$ARCH" ]; then
+		echo "please input arch."
+		echo "run $0 -h for help."
+		return 1
+	fi
+
+	if [ -z "$FILEARCH" ]; then 
+		FILEARCH="$ARCH"
+	fi
+
+	if [ -z "$OUTPUTDIR" ]; then
+		OUTPUTDIR=$CURR_DIR
+	fi
+
+	if [ ! -z "$CROSS_TOOL" ]; then
+		CC="${CROSS_TOOL}gcc"
+		STRIP="${CROSS_TOOL}strip"
+	fi
+
+	if [ -z "$CC" ]; then
+		CC="gcc"
+	fi
+
+	if [ -z "$STRIP" ]; then
+		if [ ! -z "`echo $CC | grep '\-gcc'`" ]; then
+			STRIP="`echo "$CC" | sed 's/-gcc\$/-strip/g'`"
+		else
+			STRIP="strip"
+		fi
+	fi
+
+	if [ ! -e "`which $CC`" ]; then
+		echo "Cannot find compiler $CC"
+		return 1
+	fi
+
+	build
+}
+
+main $@
+exit $?

package/debian/DEBIAN/copyright

@@ -3,5 +3,5 @@ Upstream-Name: smartdns
 Source: http://github.com/pymumu/smartdns
 
 Files: *
-Copyright: 2018 Nick peng
+Copyright: 2018-2019 Nick peng
 License: proprietary

package/debian/make.sh

@@ -1,5 +1,19 @@
-#/bin/sh
+#!/bin/sh
-
+#
+# Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+#
+# smartdns is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# smartdns is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
 CURR_DIR=$(cd $(dirname $0);pwd)
 VER="`date +"1.%Y.%m.%d-%H%M"`"
 SMARTDNS_DIR=$CURR_DIR/../../
@@ -11,42 +25,46 @@ showhelp()
 	echo "Options:"
 	echo " -o               output directory."
 	echo " --arch           archtecture."
-    echo " --ver            version."
+	echo " --ver            version."
 	echo " -h               show this message."
 }
 
 build()
 {
-    ROOT=/tmp/smartdns-deiban
+	ROOT=/tmp/smartdns-deiban
-    rm -fr $ROOT
+	rm -fr $ROOT
-    mkdir -p $ROOT
+	mkdir -p $ROOT
-    cd $ROOT/
+	cd $ROOT/
 
-    cp $CURR_DIR/DEBIAN $ROOT/ -af
+	cp $CURR_DIR/DEBIAN $ROOT/ -af
-    CONTROL=$ROOT/DEBIAN/control
+	CONTROL=$ROOT/DEBIAN/control
-    mkdir $ROOT/usr/sbin -p
+	mkdir $ROOT/usr/sbin -p
-    mkdir $ROOT/etc/smartdns/ -p
+	mkdir $ROOT/etc/smartdns/ -p
-    mkdir $ROOT/etc/default/ -p
+	mkdir $ROOT/etc/default/ -p
-    mkdir $ROOT/lib/systemd/system/ -p
+	mkdir $ROOT/lib/systemd/system/ -p
 
-    sed -i "s/Version:.*/Version: $VER/" $ROOT/DEBIAN/control
+	sed -i "s/Version:.*/Version: $VER/" $ROOT/DEBIAN/control
-    sed -i "s/Architecture:.*/Architecture: $ARCH/" $ROOT/DEBIAN/control
+	sed -i "s/Architecture:.*/Architecture: $ARCH/" $ROOT/DEBIAN/control
-    chmod 0755 $ROOT/DEBIAN/prerm
+	chmod 0755 $ROOT/DEBIAN/prerm
 
-    cp $SMARTDNS_DIR/etc/smartdns/smartdns.conf  $ROOT/etc/smartdns/
+	cp $SMARTDNS_DIR/etc/smartdns/smartdns.conf  $ROOT/etc/smartdns/
-    cp $SMARTDNS_DIR/etc/default/smartdns  $ROOT/etc/default/
+	cp $SMARTDNS_DIR/etc/default/smartdns  $ROOT/etc/default/
-    cp $SMARTDNS_DIR/systemd/smartdns.service $ROOT/lib/systemd/system/ 
+	cp $SMARTDNS_DIR/systemd/smartdns.service $ROOT/lib/systemd/system/ 
-    cp $SMARTDNS_DIR/src/smartdns $ROOT/usr/sbin
+	cp $SMARTDNS_DIR/src/smartdns $ROOT/usr/sbin
-    chmod +x $ROOT/usr/sbin/smartdns
+	if [ $? -ne 0 ]; then
+		echo "copy smartdns file failed."
+		return 1
+	fi
+	chmod +x $ROOT/usr/sbin/smartdns
 
-    dpkg -b $ROOT $OUTPUTDIR/smartdns.$VER.$ARCH.deb
+	dpkg -b $ROOT $OUTPUTDIR/smartdns.$VER.$FILEARCH.deb
 
-    rm -fr $ROOT/
+	rm -fr $ROOT/
 }
 
 main()
 {
-	OPTS=`getopt -o o:h --long arch:,ver: \
+	OPTS=`getopt -o o:h --long arch:,ver:,filearch: \
 		-n  "" -- "$@"`
 
 	if [ $? != 0 ] ; then echo "Terminating..." >&2 ; exit 1 ; fi
@@ -59,31 +77,38 @@ main()
 		--arch)
 			ARCH="$2"
 			shift 2;;
-        --ver)
+		--filearch)
-            VER="$2"
+			FILEARCH="$2"
-            shift 2;;
+			shift 2;;
+		--ver)
+			VER="$2"
+			shift 2;;
 		-o )
 			OUTPUTDIR="$2"
 			shift 2;;
-        -h | --help )
+		-h | --help )
 			showhelp
 			return 0
 			shift ;;
 		-- ) shift; break ;;
 		* ) break ;;
-  		esac
+		esac
 	done
 
-    if [ -z "$ARCH" ]; then
+	if [ -z "$ARCH" ]; then
-        echo "please input arch."
+		echo "please input arch."
-        return 1;
+		return 1;
-    fi
+	fi
 
-    if [ -z "$OUTPUTDIR" ]; then
+	if [ -z "$FILEARCH" ]; then
-        OUTPUTDIR=$CURR_DIR;
+		FILEARCH=$ARCH
-    fi
+	fi
 
-    build
+	if [ -z "$OUTPUTDIR" ]; then
+		OUTPUTDIR=$CURR_DIR;
+	fi
+
+	build
 }
 
 main $@

package/linux/install

@@ -1,7 +1,19 @@
 #!/bin/sh
 #
-# Copyright (C) 2018 Ruilin Peng (Nick) <pymumu@gmail.com>
+# Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
 #
+# smartdns is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# smartdns is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 INST_DIR=$(cd $(dirname $0);pwd)
 ISWSL=1 # 1 means not WSL, 0 means wsl 
@@ -53,7 +65,7 @@ clean_service()
 
 get_systemd_path()
 {
-	service="`systemctl --no-legend| grep .service | head -n 1 | awk '{print $1}'`"
+	service="`systemctl --no-legend| grep '\.service' | head -n 1 | awk '{print $1}'`"
 	SERVICE_PATH="`systemctl show $service | grep FragmentPath | awk -F'=' '{print $2}'`"
 	dirname $SERVICE_PATH
 }
@@ -65,14 +77,18 @@ install_files()
 		return 1
 	fi
 
-	install -v -m 0755 -t $PREFIX/usr/sbin src/smartdns
+	install -v -m 0755 -t $PREFIX/usr/sbin usr/sbin/smartdns
 	if [ $? -ne 0 ]; then
 		return 1
 	fi
 
-	install -v -m 0640 -t  $PREFIX$SMARTDNS_CONF_DIR etc/smartdns/smartdns.conf
+	if [ -e "$PREFIX$SMARTDNS_CONF_DIR/smartdns.conf" ]; then
-	if [ $? -ne 0 ]; then
+		cp etc/smartdns/smartdns.conf $PREFIX$SMARTDNS_CONF_DIR/smartdns.conf.pkg
-		return 1
+	else 
+		install -v -m 0640 -t  $PREFIX$SMARTDNS_CONF_DIR etc/smartdns/smartdns.conf
+		if [ $? -ne 0 ]; then
+			return 1
+		fi
 	fi
 
 	install -v -m 0640 -t  $PREFIX/etc/default etc/default/smartdns
@@ -82,7 +98,9 @@ install_files()
 	
 	install -v -m 0755 -t $SMARTDNS_INIT_DIR etc/init.d/smartdns 
 	if [ $? -ne 0 ]; then
-		return 1
+		if [ $ISSYSTEMD -ne 0 ]; then
+			return 1
+		fi
 	fi
 
 	if [ $ISSYSTEMD -eq 0 ]; then
@@ -104,7 +122,6 @@ uninstall_smartdns()
 	if [ -z "$PREFIX" ]; then
 		stop_service 2>/dev/null
 	fi	
-	rm -f $PREFIX$SMARTDNS_CONF_DIR/smartdns.conf
 	rmdir $PREFIX$SMARTDNS_CONF_DIR 2>/dev/null
 	rm -f $PREFIX/usr/sbin/smartdns
 	rm -f $PREFIX/etc/default/smartdns

package/linux/make.sh

@@ -0,0 +1,103 @@
+#!/bin/sh
+
+CURR_DIR=$(cd $(dirname $0);pwd)
+VER="`date +"1.%Y.%m.%d-%H%M"`"
+SMARTDNS_DIR=$CURR_DIR/../../
+SMARTDNS_BIN=$SMARTDNS_DIR/src/smartdns
+
+showhelp()
+{
+	echo "Usage: make [OPTION]"
+	echo "Options:"
+	echo " -o               output directory."
+	echo " --arch           archtecture."
+	echo " --ver            version."
+	echo " -h               show this message."
+}
+
+build()
+{
+	PKG_ROOT=/tmp/smartdns-linux
+	rm -fr $PKG_ROOT
+	mkdir -p $PKG_ROOT/smartdns
+	cd $PKG_ROOT/
+
+	# Generic x86_64
+	mkdir $PKG_ROOT/smartdns/usr/sbin -p
+	mkdir $PKG_ROOT/smartdns/package -p
+	mkdir $PKG_ROOT/smartdns/systemd -p 
+	
+	cd $SMARTDNS_DIR
+	cp package/windows $PKG_ROOT/smartdns/package/ -a
+	cp etc *.md LICENSE package/linux/install $PKG_ROOT/smartdns/ -a
+	cp systemd/smartdns.service $PKG_ROOT/smartdns/systemd
+	cp src/smartdns $PKG_ROOT/smartdns/usr/sbin -a
+	chmod +x $PKG_ROOT/smartdns/install
+
+	if [ $? -ne 0 ]; then
+		echo "copy smartdns file failed"
+		rm -fr $PKG_ROOT
+		exit 1
+	fi
+	cd $PKG_ROOT
+	tar  zcf $OUTPUTDIR/smartdns.$VER.$FILEARCH.tar.gz smartdns
+	if [ $? -ne 0 ]; then
+		echo "create package failed"
+		rm -fr $PKG_ROOT
+		exit 1
+	fi
+	cd $CURR_DIR
+	rm -fr $PKG_ROOT
+}
+
+main()
+{
+	OPTS=`getopt -o o:h --long arch:,ver:,filearch: \
+		-n  "" -- "$@"`
+
+	if [ $? != 0 ] ; then echo "Terminating..." >&2 ; exit 1 ; fi
+
+	# Note the quotes around `$TEMP': they are essential!
+	eval set -- "$OPTS"
+
+	while true; do
+		case "$1" in
+		--arch)
+			ARCH="$2"
+			shift 2;;
+		--filearch)
+			FILEARCH="$2"
+			shift 2;;
+		--ver)
+			VER="$2"
+			shift 2;;
+		-o )
+			OUTPUTDIR="$2"
+			shift 2;;
+		-h | --help )
+			showhelp
+			return 0
+			shift ;;
+		-- ) shift; break ;;
+		* ) break ;;
+  		esac
+	done
+
+	if [ -z "$ARCH" ]; then
+		echo "please input arch."
+		return 1;
+	fi
+
+	if [ -z "$FILEARCH" ]; then
+		FILEARCH=$ARCH
+	fi
+
+	if [ -z "$OUTPUTDIR" ]; then
+		OUTPUTDIR=$CURR_DIR;
+	fi
+
+	build
+}
+
+main $@
+exit $?

package/luci-compat/control/control

@@ -0,0 +1,7 @@
+Package: luci-app-smartdns
+Version: git-18.201.27126-7bf0367-1
+Depends: libc, smartdns
+Source: feeds/luci/applications/luci-app-smartdns
+Section: luci
+Architecture: all
+Description:  A smartdns server

package/luci-compat/control/postinst

@@ -0,0 +1,21 @@
+#!/bin/sh
+#
+# Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+#
+# smartdns is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# smartdns is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+[ "${IPKG_NO_SCRIPT}" = "1" ] && exit 0
+[ -x ${IPKG_INSTROOT}/lib/functions.sh ] || exit 0
+. ${IPKG_INSTROOT}/lib/functions.sh
+default_postinst $0 $@

package/luci-compat/control/postinst-pkg

@@ -0,0 +1,4 @@
+[ -n "${IPKG_INSTROOT}" ] || {
+	(. /etc/uci-defaults/50_luci-smartdns) && rm -f /etc/uci-defaults/50_luci-smartdns
+	exit 0
+}

package/luci-compat/control/prerm

@@ -0,0 +1,20 @@
+#!/bin/sh
+#
+# Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+#
+# smartdns is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# smartdns is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+[ -x ${IPKG_INSTROOT}/lib/functions.sh ] || exit 0
+. ${IPKG_INSTROOT}/lib/functions.sh
+default_prerm $0 $@

package/luci-compat/debian-binary

@@ -0,0 +1 @@
+2.0

package/luci-compat/files/etc/uci-defaults/50_luci-smartdns

@@ -0,0 +1,26 @@
+#!/bin/sh
+#
+# Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+#
+# smartdns is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# smartdns is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+uci -q batch <<-EOF >/dev/null
+	delete ucitrack.@smartdns[-1]
+	add ucitrack smartdns
+	set ucitrack.@smartdns[-1].init=smartdns
+	commit ucitrack
+EOF
+
+rm -f /tmp/luci-indexcache
+exit 0

package/luci-compat/files/luci/controller/smartdns.lua

@@ -1,4 +1,18 @@
--- Copyright 2018 Nick Peng (pymumu@gmail.com)
+--
+-- Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+--
+-- smartdns is free software: you can redistribute it and/or modify
+-- it under the terms of the GNU General Public License as published by
+-- the Free Software Foundation, either version 3 of the License, or
+-- (at your option) any later version.
+--
+-- smartdns is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+-- GNU General Public License for more details.
+--
+-- You should have received a copy of the GNU General Public License
+-- along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 module("luci.controller.smartdns", package.seeall)
 local smartdns = require "luci.model.smartdns"

package/luci-compat/files/luci/i18n/smartdns.zh-cn.po

@@ -0,0 +1,299 @@
+msgid ""
+msgstr "Content-Type: text/plain; charset=UTF-8\n"
+
+msgid "SmartDNS"
+msgstr "SmartDNS"
+
+msgid "SmartDNS is a local high-performance DNS server"
+msgstr "SmartDNS是一个本地高性能DNS服务器"
+
+msgid "SmartDNS Server"
+msgstr "SmartDNS 服务器"
+
+msgid "SmartDNS is a local high-performance DNS server, supports finding fastest IP, supports ad filtering, and supports avoiding DNS poisoning."
+msgstr "SmartDNS是一个本地高性能DNS服务器，支持返回最快IP，支持广告过滤。"
+
+msgid "Custom Settings"
+msgstr "自定义设置"
+
+msgid "General Settings"
+msgstr "基本设置"
+
+msgid "Settings"
+msgstr "设置"
+
+msgid "Advanced Settings"
+msgstr "高级设置"
+
+msgid "Generate Coredump"
+msgstr "生成coredump"
+
+msgid "Generate Coredump file when smartdns crash, coredump file is located at /tmp/smartdns.xxx.core."
+msgstr "当smartdns异常时生成coredump文件，coredump文件在/tmp/smartdns.xxx.core."
+
+msgid "Server Name"
+msgstr "服务器名称"
+
+msgid "Smartdns server name"
+msgstr "SmartDNS的服务器名称，默认为smartdns，留空为主机名"
+
+msgid "SmartDNS is a local dns server to find fastest ip."
+msgstr "本地高性能服务器，优化网络访问性能。"
+
+msgid "Enable or disable smartdns server"
+msgstr "启用或禁用SmartDNS服务"
+
+msgid "Local Port"
+msgstr "本地端口"
+
+msgid "Smartdns local server port"
+msgstr "SmartDNS本地服务端口"
+
+msgid "IPV4 53 Port Redirect Failure"
+msgstr "IPV4 53端口重定向失败"
+
+msgid "IPV6 53 Port Redirect Failure"
+msgstr "IPV6 53端口重定向失败"
+
+msgid "Dnsmasq Forwared To Smartdns Failure"
+msgstr "重定向dnsmasq到smartdns失败"
+
+msgid "TCP Server"
+msgstr "TCP服务器"
+
+msgid "Enable TCP DNS Server"
+msgstr "启用TCP服务器"
+
+msgid "IPV6 Server"
+msgstr "IPV6服务器"
+
+msgid "Enable IPV6 DNS Server"
+msgstr "启用IPV6服务器"
+
+msgid "Dual-stack IP Selection"
+msgstr "双栈IP优选"
+
+msgid "Enable IP selection between IPV4 and IPV6"
+msgstr "启用或禁用IPV4，IPV6间的IP优选策略。"
+
+msgid "Domain prefetch"
+msgstr "域名预加载"
+
+msgid "Enable domain prefetch, accelerate domain response speed."
+msgstr "启用域名预加载，加速域名响应速度。"
+
+msgid "Serve expired"
+msgstr "过期缓存服务"
+
+msgid "Attempts to serve old responses from cache with a TTL of 0 in the response without waiting for the actual resolution to finish."
+msgstr "查询性能优化，有请求时尝试回应TTL为0的过期记录，以避免查询等待。"
+
+msgid "Redirect"
+msgstr "重定向"
+
+msgid "SmartDNS redirect mode"
+msgstr "SmartDNS 重定向模式"
+
+msgid "Run as dnsmasq upstream server"
+msgstr "作为dnsmasq的上游服务器"
+
+msgid "Redirect 53 port to SmartDNS"
+msgstr "重定向53端口到SmartDNS"
+
+msgid "Cache Size"
+msgstr "缓存大小"
+
+msgid "DNS domain result cache size"
+msgstr "缓存DNS的结果，缓存大小，配置零则不缓存"
+
+msgid "Domain TTL"
+msgstr "域名TTL"
+
+msgid "TTL for all domain result."
+msgstr "设置所有域名的TTL值"
+
+msgid "Domain TTL Min"
+msgstr "域名TTL最小值"
+
+msgid "Minimum TTL for all domain result."
+msgstr "设置所有域名的TTL最小值"
+
+msgid "Domain TTL Max"
+msgstr "域名TTL最大值"
+
+msgid "Maximum TTL for all domain result."
+msgstr "设置所有域名的TTL最大值"
+
+msgid "smartdns custom settings"
+msgstr "smartdns 自定义设置，具体配置参数参考指导"
+
+msgid "Second Server Settings"
+msgstr "第二DNS服务器"
+
+msgid "Enable or disable second DNS server."
+msgstr "是否启用第二DNS服务器。"
+
+msgid "Skip Speed Check"
+msgstr "跳过测速"
+
+msgid "Do not check speed."
+msgstr "禁用测速。"
+
+msgid "Server Group"
+msgstr "服务器组"
+
+msgid "Query DNS through specific dns server group, such as office, home."
+msgstr "使用指定服务器组查询，比如office, home。"
+
+msgid "Skip Address Rules"
+msgstr "跳过address规则"
+
+msgid "Skip address rules."
+msgstr "跳过address规则。"
+
+msgid "Skip Nameserver Rule"
+msgstr "跳过Nameserver规则"
+
+msgid "Skip nameserver rules."
+msgstr "跳过Nameserver规则。"
+
+msgid "Skip Ipset Rule"
+msgstr "跳过ipset规则"
+
+msgid "Skip ipset rules."
+msgstr "跳过ipset规则。"
+
+msgid "Skip SOA Address Rule"
+msgstr "跳过address SOA(#)规则"
+
+msgid "Skip SOA address rules."
+msgstr "跳过address SOA(#)规则。"
+
+msgid "Skip Dualstack Selection"
+msgstr "跳过双栈优选"
+
+msgid "Skip Dualstack Selection."
+msgstr "跳过双栈优选。"
+
+msgid "Skip Cache"
+msgstr "跳过cache"
+
+msgid "Skip Cache."
+msgstr "跳过cache。"
+
+msgid "Upstream Servers"
+msgstr "上游服务器"
+
+msgid "Upstream Servers, support UDP, TCP protocol. Please configure multiple DNS servers, including multiple foreign DNS servers."
+msgstr "上游DNS服务器列表，支持UDP，TCP协议，请配置多个上游DNS服务器，包括多个国内外服务器"
+
+msgid "DNS Server Name"
+msgstr "DNS服务器名称"
+
+msgid "port"
+msgstr "端口"
+
+msgid "DNS Server port"
+msgstr "DNS服务器端口"
+
+msgid "DNS Server ip"
+msgstr "DNS服务器IP"
+
+msgid "type"
+msgstr "类型"
+
+msgid "DNS Server type"
+msgstr "协议类型"
+
+msgid "Domain Address"
+msgstr "域名地址"
+
+msgid "TLS Hostname Verify"
+msgstr "校验TLS主机名"
+
+msgid "Set TLS hostname to verify."
+msgstr "设置校验TLS主机名。"
+
+msgid "No check certificate"
+msgstr "停用证书校验"
+
+msgid "Do not check certificate."
+msgstr "不校验证书的合法性。"
+
+msgid "TLS SNI name"
+msgstr "TLS SNI名称"
+
+msgid "HTTP Host"
+msgstr "HTTP主机"
+
+msgid "Sets the server name indication for query."
+msgstr "设置查询时使用的服务器SNI名称。"
+
+msgid "Set the HTTP host used for the query. Use this parameter when the host of the URL address is an IP address."
+msgstr "设置查询时使用的HTTP主机，当URL地址的host是IP地址时，使用此参数。"
+
+msgid "Server Group"
+msgstr "服务器组"
+
+msgid "DNS Server group belongs to, used with nameserver, such as office, home."
+msgstr "DNS服务器所属组， 配合nameserver使用，例如：office，home。"
+
+msgid "IP Blacklist Filtering"
+msgstr "IP黑名单过滤"
+
+msgid "Anti Answer Forgery"
+msgstr "反回答伪造"
+
+msgid "Anti answer forgery, if DNS does not work properly after enabling, please turn off this feature"
+msgstr "反回答伪造，如果启用后DNS工作不正常，请关闭此功能。"
+
+msgid "Filtering IP with blacklist"
+msgstr "使用IP黑名单过滤"
+
+msgid "TLS SPKI Pinning"
+msgstr "TLS SPKI 指纹"
+
+msgid "Used to verify the validity of the TLS server, The value is Base64 encoded SPKI fingerprint, leaving blank to indicate that the validity of TLS is not verified."
+msgstr "用于校验TLS服务器的有效性，数值为Base64编码的SPKI指纹, 留空表示不验证TLS的合法性"
+
+msgid "Additional Server Args"
+msgstr "额外的服务器参数"
+
+msgid "Additional Args for upstream dns servers"
+msgstr "额外的上游DNS服务器参数"
+
+msgid "Upstream DNS Server Configuration"
+msgstr "上游DNS服务器配置"
+
+msgid "Set Specific domain ip address."
+msgstr "指定特定域名的IP地址"
+
+msgid "Specify an IP address to return for any host in the given domains, Queries in the domains are never forwarded and always replied to with the specified IP address which may be IPv4 or IPv6."
+msgstr "配置特定域名返回特定的IP地址，域名查询将不到上游服务器请求，直接返回配置的IP地址，可用于广告屏蔽。"
+
+msgid "IP Blacklist"
+msgstr "IP黑名单"
+
+msgid "Set Specific ip blacklist."
+msgstr "设置IP黑名单列表"
+
+msgid "Configure IP blacklists that will be filtered from the results of specific DNS server."
+msgstr "配置需要从指定域名服务器结果过滤的IP黑名单。"
+
+msgid "Technical Support"
+msgstr "技术支持"
+
+msgid "If you like this software, please buy me a cup of coffee."
+msgstr "如果本软件对你有帮助，请给作者加个蛋。"
+
+msgid "SmartDNS official website"
+msgstr "SmartDNS官方网站"
+
+msgid "open website"
+msgstr "打开网站"
+
+msgid "Donate to smartdns"
+msgstr "捐助smartdns项目"
+
+msgid "Donate"
+msgstr "捐助"

package/luci-compat/files/luci/model/cbi/smartdns/smartdns.lua

@@ -1,4 +1,18 @@
--- Copyright 2018 Nick Peng (pymumu@gmail.com)
+--
+-- Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+--
+-- smartdns is free software: you can redistribute it and/or modify
+-- it under the terms of the GNU General Public License as published by
+-- the Free Software Foundation, either version 3 of the License, or
+-- (at your option) any later version.
+--
+-- smartdns is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+-- GNU General Public License for more details.
+--
+-- You should have received a copy of the GNU General Public License
+-- along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 require ("nixio.fs")
 require ("luci.http")
@@ -16,6 +30,7 @@ s = m:section(TypedSection, "smartdns", translate("Settings"), translate("Genera
 s.anonymous = true
 
 s:tab("settings", translate("General Settings"))
+s:tab("seconddns", translate("Second Server Settings"))
 s:tab("custom", translate("Custom Settings"))
 
 ---- Eanble
@@ -68,6 +83,15 @@ o.cfgvalue    = function(...)
     return Flag.cfgvalue(...) or "0"
 end
 
+---- Domain Serve expired
+o = s:taboption("settings", Flag, "serve_expired", translate("Serve expired"), 
+	translate("Attempts to serve old responses from cache with a TTL of 0 in the response without waiting for the actual resolution to finish."))
+o.rmempty     = false
+o.default     = o.disabled
+o.cfgvalue    = function(...)
+    return Flag.cfgvalue(...) or "0"
+end
+
 ---- Redirect
 o = s:taboption("settings", ListValue, "redirect", translate("Redirect"), translate("SmartDNS redirect mode"))
 o.placeholder = "none"
@@ -92,10 +116,100 @@ o.placeholder = "300"
 o.default     = 300
 o.optional    = true
 
+---- second dns server
 ---- rr-ttl-max
 o = s:taboption("settings", Value, "rr_ttl_max", translate("Domain TTL Max"), translate("Maximum TTL for all domain result."))
 o.rempty      = true
 
+---- Eanble
+o = s:taboption("seconddns", Flag, "seconddns_enabled", translate("Enable"), translate("Enable or disable second DNS server."))
+o.default     = o.disabled
+o.rempty      = false
+
+---- Port
+o = s:taboption("seconddns", Value, "seconddns_port", translate("Local Port"), translate("Smartdns local server port"))
+o.placeholder = 6553
+o.default     = 6553
+o.datatype    = "port"
+o.rempty      = false
+
+---- Enable TCP server
+o = s:taboption("seconddns", Flag, "seconddns_tcp_server", translate("TCP Server"), translate("Enable TCP DNS Server"))
+o.rmempty     = false
+o.default     = o.enabled
+o.cfgvalue    = function(...)
+    return Flag.cfgvalue(...) or "1"
+end
+
+---- dns server group
+o = s:taboption("seconddns", Value, "seconddns_server_group", translate("Server Group"), translate("Query DNS through specific dns server group, such as office, home."))
+o.rmempty     = true
+o.placeholder = "default"
+o.datatype    = "hostname"
+o.rempty      = true
+
+o = s:taboption("seconddns", Flag, "seconddns_no_speed_check", translate("Skip Speed Check"), translate("Do not check speed."))
+o.rmempty     = false
+o.default     = o.disabled
+o.cfgvalue    = function(...)
+    return Flag.cfgvalue(...) or "0"
+end
+
+---- skip address rules
+o = s:taboption("seconddns", Flag, "seconddns_no_rule_addr", translate("Skip Address Rules"), translate("Skip address rules."))
+o.rmempty     = false
+o.default     = o.disabled
+o.cfgvalue    = function(...)
+    return Flag.cfgvalue(...) or "0"
+end
+
+---- skip name server rules
+o = s:taboption("seconddns", Flag, "seconddns_no_rule_nameserver", translate("Skip Nameserver Rule"), translate("Skip nameserver rules."))
+o.rmempty     = false
+o.default     = o.disabled
+o.cfgvalue    = function(...)
+    return Flag.cfgvalue(...) or "0"
+end
+
+---- skip ipset rules
+o = s:taboption("seconddns", Flag, "seconddns_no_rule_ipset", translate("Skip Ipset Rule"), translate("Skip ipset rules."))
+o.rmempty     = false
+o.default     = o.disabled
+o.cfgvalue    = function(...)
+    return Flag.cfgvalue(...) or "0"
+end
+
+---- skip soa address rule
+o = s:taboption("seconddns", Flag, "seconddns_no_rule_soa", translate("Skip SOA Address Rule"), translate("Skip SOA address rules."))
+o.rmempty     = false
+o.default     = o.disabled
+o.cfgvalue    = function(...)
+    return Flag.cfgvalue(...) or "0"
+end
+
+o = s:taboption("seconddns", Flag, "seconddns_no_dualstack_selection", translate("Skip Dualstack Selection"), translate("Skip Dualstack Selection."))
+o.rmempty     = false
+o.default     = o.disabled
+o.cfgvalue    = function(...)
+    return Flag.cfgvalue(...) or "0"
+end
+
+---- skip cache
+o = s:taboption("seconddns", Flag, "seconddns_no_cache", translate("Skip Cache"), translate("Skip Cache."))
+o.rmempty     = false
+o.default     = o.disabled
+o.cfgvalue    = function(...)
+    return Flag.cfgvalue(...) or "0"
+end
+
+---- Force AAAA SOA
+o = s:taboption("seconddns", Flag, "force_aaaa_soa", translate("Force AAAA SOA"), translate("Force AAAA SOA."))
+o.rmempty     = false
+o.default     = o.disabled
+o.cfgvalue    = function(...)
+    return Flag.cfgvalue(...) or "0"
+end
+
 ----- custom settings
 custom = s:taboption("custom", Value, "Custom Settings",
 	translate(""), 
@@ -163,13 +277,14 @@ o:value("https", translate("https"))
 o.default     = "udp"
 o.rempty      = false
 
--- Doman addresss
+s = m:section(TypedSection, "smartdns", translate("Advanced Settings"), translate("Advanced Settings"));
-s = m:section(TypedSection, "smartdns", translate("Domain Address"), 
+s.anonymous = true;
-	translate("Set Specific domain ip address."))
-s.anonymous = true
 
----- address
+s:tab("domain-address", translate("Domain Address"), translate("Set Specific domain ip address."));
-addr = s:option(Value, "address",
+s:tab("blackip-list", translate("IP Blacklist"), translate("Set Specific ip blacklist."));
+
+-- Doman addresss
+addr = s:taboption("domain-address", Value, "address",
 	translate(""), 
 	translate("Specify an IP address to return for any host in the given domains, Queries in the domains are never forwarded and always replied to with the specified IP address which may be IPv4 or IPv6."))
 
@@ -186,12 +301,7 @@ function addr.write(self, section, value)
 end
 
 -- IP Blacklist
-s = m:section(TypedSection, "smartdns", translate("IP Blacklist"), 
+addr = s:taboption("blackip-list", Value, "blacklist_ip",
-	translate("Set Specific ip blacklist."))
-s.anonymous = true
-
----- blacklist
-addr = s:option(Value, "blacklist_ip",
 	translate(""), 
 	translate("Configure IP blacklists that will be filtered from the results of specific DNS server."))
 
@@ -207,7 +317,7 @@ function addr.write(self, section, value)
 	nixio.fs.writefile("/etc/smartdns/blacklist-ip.conf", value)
 end
 
--- Doman addresss
+-- Technical Support
 s = m:section(TypedSection, "smartdns", translate("Technical Support"), 
 	translate("If you like this software, please buy me a cup of coffee."))
 s.anonymous = true

package/luci-compat/files/luci/model/cbi/smartdns/upstream.lua

@@ -1,3 +1,19 @@
+--
+-- Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+--
+-- smartdns is free software: you can redistribute it and/or modify
+-- it under the terms of the GNU General Public License as published by
+-- the Free Software Foundation, either version 3 of the License, or
+-- (at your option) any later version.
+--
+-- smartdns is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+-- GNU General Public License for more details.
+--
+-- You should have received a copy of the GNU General Public License
+-- along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
 local sid = arg[1]
 
 m = Map("smartdns", "%s - %s" %{translate("SmartDNS Server"), translate("Upstream DNS Server Configuration")})
@@ -40,7 +56,7 @@ o.default     = "udp"
 o.rempty      = false
 
 ---- server group
-o = s:option(Value, "server_group", translate("Server Group"), translate("DNS Server group belongs to, used with nameserver, such as offlce, home."))
+o = s:option(Value, "server_group", translate("Server Group"), translate("DNS Server group belongs to, used with nameserver, such as office, home."))
 o.rmempty     = true
 o.placeholder = "default"
 o.datatype    = "hostname"
@@ -54,14 +70,47 @@ o.cfgvalue    = function(...)
     return Flag.cfgvalue(...) or "0"
 end
 
----- anti-Answer-Forgery
+---- TLS host verify
-o = s:option(Flag, "check_edns", translate("Anti Answer Forgery"), translate("Anti answer forgery, if DNS does not work properly after enabling, please turn off this feature"))
+o = s:option(Value, "tls_host_verify", translate("TLS Hostname Verify"), translate("Set TLS hostname to verify."))
+o.default     = ""
+o.datatype    = "string"
+o.rempty      = true
+o:depends("type", "tls")
+o:depends("type", "https")
+
+---- certificate verify
+o = s:option(Flag, "no_check_certificate", translate("No check certificate"), translate("Do not check certificate."))
 o.rmempty     = false
 o.default     = o.disabled
-o:depends("type", "udp")
 o.cfgvalue    = function(...)
     return Flag.cfgvalue(...) or "0"
 end
+o:depends("type", "tls")
+o:depends("type", "https")
+
+---- SNI host name
+o = s:option(Value, "host_name", translate("TLS SNI name"), translate("Sets the server name indication for query."))
+o.default     = ""
+o.datatype    = "hostname"
+o.rempty      = true
+o:depends("type", "tls")
+o:depends("type", "https")
+
+---- http host
+o = s:option(Value, "http_host", translate("HTTP Host"), translate("Set the HTTP host used for the query. Use this parameter when the host of the URL address is an IP address."))
+o.default     = ""
+o.datatype    = "hostname"
+o.rempty      = true
+o:depends("type", "https")
+
+---- anti-Answer-Forgery
+-- o = s:option(Flag, "check_edns", translate("Anti Answer Forgery"), translate("Anti answer forgery, if DNS does not work properly after enabling, please turn off this feature"))
+-- o.rmempty     = false
+-- o.default     = o.disabled
+-- o:depends("type", "udp")
+-- o.cfgvalue    = function(...)
+--     return Flag.cfgvalue(...) or "0"
+-- end
 
 ---- SPKI pin
 o = s:option(Value, "spki_pin", translate("TLS SPKI Pinning"), translate("Used to verify the validity of the TLS server, The value is Base64 encoded SPKI fingerprint, leaving blank to indicate that the validity of TLS is not verified."))

package/luci-compat/files/luci/model/smartdns.lua

@@ -0,0 +1,31 @@
+--
+-- Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+--
+-- smartdns is free software: you can redistribute it and/or modify
+-- it under the terms of the GNU General Public License as published by
+-- the Free Software Foundation, either version 3 of the License, or
+-- (at your option) any later version.
+--
+-- smartdns is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+-- GNU General Public License for more details.
+--
+-- You should have received a copy of the GNU General Public License
+-- along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+require ("nixio.fs")
+require ("luci.http")
+require ("luci.dispatcher")
+require ("nixio.fs")
+
+local uci = require "luci.model.uci".cursor()
+
+module("luci.model.smartdns", package.seeall)
+
+function get_config_option(module, section, option, default)
+	return uci:get_first(module, section, option) or default
+end
+
+return m
+

package/luci-compat/make.sh

@@ -0,0 +1,135 @@
+#!/bin/sh
+#
+# Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+#
+# smartdns is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# smartdns is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+CURR_DIR=$(cd $(dirname $0);pwd)
+
+VER="`date +"1.%Y.%m.%d-%H%M"`"
+SMARTDNS_DIR=$CURR_DIR/../../
+PO2LMO=
+
+showhelp()
+{
+	echo "Usage: make [OPTION]"
+	echo "Options:"
+	echo " -o               output directory."
+	echo " --arch           archtecture."
+	echo " --ver            version."
+	echo " -h               show this message."
+}
+
+build_tool()
+{
+	make -C $ROOT/tool/po2lmo -j 
+	PO2LMO="$ROOT/tool/po2lmo/src/po2lmo"
+
+}
+
+clean_tool()
+{
+	make -C $ROOT/tool/po2lmo clean
+}
+
+build()
+{
+
+	ROOT=/tmp/luci-app-smartdns
+	rm -fr $ROOT
+
+	mkdir -p $ROOT
+	cp $CURR_DIR/* $ROOT/ -af
+	cd $ROOT/
+	build_tool
+	mkdir $ROOT/root/usr/lib/lua/ -p
+	cp $ROOT/files/luci $ROOT/root/usr/lib/lua/ -af
+	
+	#Generate Language
+	$PO2LMO $ROOT/files/luci/i18n/smartdns.zh-cn.po $ROOT/root/usr/lib/lua/luci/i18n/smartdns.zh-cn.lmo
+	rm $ROOT/root/usr/lib/lua/luci/i18n/smartdns.zh-cn.po
+
+	cp $ROOT/files/etc $ROOT/root/ -af
+	INST_SIZE="`du -sb $ROOT/root/ | awk '{print $1}'`"
+	
+	sed -i "s/^Architecture.*/Architecture: all/g" $ROOT/control/control
+	sed -i "s/Version:.*/Version: $VER/" $ROOT/control/control
+
+	if [ ! -z "$INST_SIZE" ]; then
+		echo "Installed-Size: $INST_SIZE" >> $ROOT/control/control
+	fi
+
+	cd $ROOT/control
+	chmod +x *
+	tar zcf ../control.tar.gz ./
+	cd $ROOT
+
+	tar zcf $ROOT/data.tar.gz -C root .
+	tar zcf $OUTPUTDIR/luci-app-smartdns.$VER.$FILEARCH.ipk ./control.tar.gz ./data.tar.gz ./debian-binary
+
+	rm -fr $ROOT/
+}
+
+main()
+{
+	OPTS=`getopt -o o:h --long arch:,ver:,filearch: \
+		-n  "" -- "$@"`
+
+	if [ $? != 0 ] ; then echo "Terminating..." >&2 ; exit 1 ; fi
+
+	# Note the quotes around `$TEMP': they are essential!
+	eval set -- "$OPTS"
+
+	while true; do
+		case "$1" in
+		--arch)
+			ARCH="$2"
+			shift 2;;
+		--filearch)
+			FILEARCH="$2"
+			shift 2;;
+		--ver)
+			VER="$2"
+			shift 2;;
+		-o )
+			OUTPUTDIR="$2"
+			shift 2;;
+		-h | --help )
+			showhelp
+			return 0
+			shift ;;
+		-- ) shift; break ;;
+		* ) break ;;
+		esac
+	done
+
+	if [ -z "$ARCH" ]; then
+		echo "please input arch."
+		return 1;
+	fi
+
+	if [ -z "$FILEARCH" ]; then
+		FILEARCH=$ARCH
+	fi
+
+	if [ -z "$OUTPUTDIR" ]; then
+		OUTPUTDIR=$CURR_DIR;
+	fi
+
+	build
+}
+
+main $@
+exit $?
+
+

package/luci-compat/tool/po2lmo/Makefile

@@ -0,0 +1,12 @@
+
+INSTALL = install
+PREFIX  = /usr/bin
+
+po2lmo: src/po2lmo.o src/template_lmo.o
+	$(CC) $(LDFLAGS) -o src/po2lmo src/po2lmo.o src/template_lmo.o
+
+install:
+	$(INSTALL) -m 755 src/po2lmo $(PREFIX)
+
+clean:
+	$(RM) src/po2lmo src/*.o

package/luci-compat/tool/po2lmo/src/po2lmo.c

@@ -0,0 +1,247 @@
+/*
+ * lmo - Lua Machine Objects - PO to LMO conversion tool
+ *
+ *   Copyright (C) 2009-2012 Jo-Philipp Wich <xm@subsignal.org>
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+#include "template_lmo.h"
+
+static void die(const char *msg)
+{
+	fprintf(stderr, "Error: %s\n", msg);
+	exit(1);
+}
+
+static void usage(const char *name)
+{
+	fprintf(stderr, "Usage: %s input.po output.lmo\n", name);
+	exit(1);
+}
+
+static void print(const void *ptr, size_t size, size_t nmemb, FILE *stream)
+{
+	if( fwrite(ptr, size, nmemb, stream) == 0 )
+		die("Failed to write stdout");
+}
+
+static int extract_string(const char *src, char *dest, int len)
+{
+	int pos = 0;
+	int esc = 0;
+	int off = -1;
+
+	for( pos = 0; (pos < strlen(src)) && (pos < len); pos++ )
+	{
+		if( (off == -1) && (src[pos] == '"') )
+		{
+			off = pos + 1;
+		}
+		else if( off >= 0 )
+		{
+			if( esc == 1 )
+			{
+				switch (src[pos])
+				{
+				case '"':
+				case '\\':
+					off++;
+					break;
+				}
+				dest[pos-off] = src[pos];
+				esc = 0;
+			}
+			else if( src[pos] == '\\' )
+			{
+				dest[pos-off] = src[pos];
+				esc = 1;
+			}
+			else if( src[pos] != '"' )
+			{
+				dest[pos-off] = src[pos];
+			}
+			else
+			{
+				dest[pos-off] = '\0';
+				break;
+			}
+		}
+	}
+
+	return (off > -1) ? strlen(dest) : -1;
+}
+
+static int cmp_index(const void *a, const void *b)
+{
+	uint32_t x = ((const lmo_entry_t *)a)->key_id;
+	uint32_t y = ((const lmo_entry_t *)b)->key_id;
+
+	if (x < y)
+		return -1;
+	else if (x > y)
+		return 1;
+
+	return 0;
+}
+
+static void print_uint32(uint32_t x, FILE *out)
+{
+	uint32_t y = htonl(x);
+	print(&y, sizeof(uint32_t), 1, out);
+}
+
+static void print_index(void *array, int n, FILE *out)
+{
+	lmo_entry_t *e;
+
+	qsort(array, n, sizeof(*e), cmp_index);
+
+	for (e = array; n > 0; n--, e++)
+	{
+		print_uint32(e->key_id, out);
+		print_uint32(e->val_id, out);
+		print_uint32(e->offset, out);
+		print_uint32(e->length, out);
+	}
+}
+
+int main(int argc, char *argv[])
+{
+	char line[4096];
+	char key[4096];
+	char val[4096];
+	char tmp[4096];
+	int state  = 0;
+	int offset = 0;
+	int length = 0;
+	int n_entries = 0;
+	void *array = NULL;
+	lmo_entry_t *entry = NULL;
+	uint32_t key_id, val_id;
+
+	FILE *in;
+	FILE *out;
+
+	if( (argc != 3) || ((in = fopen(argv[1], "r")) == NULL) || ((out = fopen(argv[2], "w")) == NULL) )
+		usage(argv[0]);
+
+	memset(line, 0, sizeof(key));
+	memset(key, 0, sizeof(val));
+	memset(val, 0, sizeof(val));
+
+	while( (NULL != fgets(line, sizeof(line), in)) || (state >= 2 && feof(in)) )
+	{
+		if( state == 0 && strstr(line, "msgid \"") == line )
+		{
+			switch(extract_string(line, key, sizeof(key)))
+			{
+				case -1:
+					die("Syntax error in msgid");
+				case 0:
+					state = 1;
+					break;
+				default:
+					state = 2;
+			}
+		}
+		else if( state == 1 || state == 2 )
+		{
+			if( strstr(line, "msgstr \"") == line || state == 2 )
+			{
+				switch(extract_string(line, val, sizeof(val)))
+				{
+					case -1:
+						state = 4;
+						break;
+					default:
+						state = 3;
+				}
+			}
+			else
+			{
+				switch(extract_string(line, tmp, sizeof(tmp)))
+				{
+					case -1:
+						state = 2;
+						break;
+					default:
+						strcat(key, tmp);
+				}
+			}
+		}
+		else if( state == 3 )
+		{
+			switch(extract_string(line, tmp, sizeof(tmp)))
+			{
+				case -1:
+					state = 4;
+					break;
+				default:
+					strcat(val, tmp);
+			}
+		}
+
+		if( state == 4 )
+		{
+			if( strlen(key) > 0 && strlen(val) > 0 )
+			{
+				key_id = sfh_hash(key, strlen(key));
+				val_id = sfh_hash(val, strlen(val));
+
+				if( key_id != val_id )
+				{
+					n_entries++;
+					array = realloc(array, n_entries * sizeof(lmo_entry_t));
+					entry = (lmo_entry_t *)array + n_entries - 1;
+
+					if (!array)
+						die("Out of memory");
+
+					entry->key_id = key_id;
+					entry->val_id = val_id;
+					entry->offset = offset;
+					entry->length = strlen(val);
+
+					length = strlen(val) + ((4 - (strlen(val) % 4)) % 4);
+
+					print(val, length, 1, out);
+					offset += length;
+				}
+			}
+
+			state = 0;
+			memset(key, 0, sizeof(key));
+			memset(val, 0, sizeof(val));
+		}
+
+		memset(line, 0, sizeof(line));
+	}
+
+	print_index(array, n_entries, out);
+
+	if( offset > 0 )
+	{
+		print_uint32(offset, out);
+		fsync(fileno(out));
+		fclose(out);
+	}
+	else
+	{
+		fclose(out);
+		unlink(argv[2]);
+	}
+
+	fclose(in);
+	return(0);
+}

package/luci-compat/tool/po2lmo/src/template_lmo.c

@@ -0,0 +1,328 @@
+/*
+ * lmo - Lua Machine Objects - Base functions
+ *
+ *   Copyright (C) 2009-2010 Jo-Philipp Wich <xm@subsignal.org>
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+#include "template_lmo.h"
+
+/*
+ * Hash function from http://www.azillionmonkeys.com/qed/hash.html
+ * Copyright (C) 2004-2008 by Paul Hsieh
+ */
+
+uint32_t sfh_hash(const char *data, int len)
+{
+	uint32_t hash = len, tmp;
+	int rem;
+
+	if (len <= 0 || data == NULL) return 0;
+
+	rem = len & 3;
+	len >>= 2;
+
+	/* Main loop */
+	for (;len > 0; len--) {
+		hash  += sfh_get16(data);
+		tmp    = (sfh_get16(data+2) << 11) ^ hash;
+		hash   = (hash << 16) ^ tmp;
+		data  += 2*sizeof(uint16_t);
+		hash  += hash >> 11;
+	}
+
+	/* Handle end cases */
+	switch (rem) {
+		case 3: hash += sfh_get16(data);
+			hash ^= hash << 16;
+			hash ^= data[sizeof(uint16_t)] << 18;
+			hash += hash >> 11;
+			break;
+		case 2: hash += sfh_get16(data);
+			hash ^= hash << 11;
+			hash += hash >> 17;
+			break;
+		case 1: hash += *data;
+			hash ^= hash << 10;
+			hash += hash >> 1;
+	}
+
+	/* Force "avalanching" of final 127 bits */
+	hash ^= hash << 3;
+	hash += hash >> 5;
+	hash ^= hash << 4;
+	hash += hash >> 17;
+	hash ^= hash << 25;
+	hash += hash >> 6;
+
+	return hash;
+}
+
+uint32_t lmo_canon_hash(const char *str, int len)
+{
+	char res[4096];
+	char *ptr, prev;
+	int off;
+
+	if (!str || len >= sizeof(res))
+		return 0;
+
+	for (prev = ' ', ptr = res, off = 0; off < len; prev = *str, off++, str++)
+	{
+		if (isspace(*str))
+		{
+			if (!isspace(prev))
+				*ptr++ = ' ';
+		}
+		else
+		{
+			*ptr++ = *str;
+		}
+	}
+
+	if ((ptr > res) && isspace(*(ptr-1)))
+		ptr--;
+
+	return sfh_hash(res, ptr - res);
+}
+
+lmo_archive_t * lmo_open(const char *file)
+{
+	int in = -1;
+	uint32_t idx_offset = 0;
+	struct stat s;
+
+	lmo_archive_t *ar = NULL;
+
+	if (stat(file, &s) == -1)
+		goto err;
+
+	if ((in = open(file, O_RDONLY)) == -1)
+		goto err;
+
+	if ((ar = (lmo_archive_t *)malloc(sizeof(*ar))) != NULL)
+	{
+		memset(ar, 0, sizeof(*ar));
+
+		ar->fd     = in;
+		ar->size = s.st_size;
+
+		fcntl(ar->fd, F_SETFD, fcntl(ar->fd, F_GETFD) | FD_CLOEXEC);
+
+		if ((ar->mmap = mmap(NULL, ar->size, PROT_READ, MAP_SHARED, ar->fd, 0)) == MAP_FAILED)
+			goto err;
+
+		idx_offset = ntohl(*((const uint32_t *)
+		                     (ar->mmap + ar->size - sizeof(uint32_t))));
+
+		if (idx_offset >= ar->size)
+			goto err;
+
+		ar->index  = (lmo_entry_t *)(ar->mmap + idx_offset);
+		ar->length = (ar->size - idx_offset - sizeof(uint32_t)) / sizeof(lmo_entry_t);
+		ar->end    = ar->mmap + ar->size;
+
+		return ar;
+	}
+
+err:
+	if (in > -1)
+		close(in);
+
+	if (ar != NULL)
+	{
+		if ((ar->mmap != NULL) && (ar->mmap != MAP_FAILED))
+			munmap(ar->mmap, ar->size);
+
+		free(ar);
+	}
+
+	return NULL;
+}
+
+void lmo_close(lmo_archive_t *ar)
+{
+	if (ar != NULL)
+	{
+		if ((ar->mmap != NULL) && (ar->mmap != MAP_FAILED))
+			munmap(ar->mmap, ar->size);
+
+		close(ar->fd);
+		free(ar);
+
+		ar = NULL;
+	}
+}
+
+
+lmo_catalog_t *_lmo_catalogs = NULL;
+lmo_catalog_t *_lmo_active_catalog = NULL;
+
+int lmo_load_catalog(const char *lang, const char *dir)
+{
+	DIR *dh = NULL;
+	char pattern[16];
+	char path[PATH_MAX];
+	struct dirent *de = NULL;
+
+	lmo_archive_t *ar = NULL;
+	lmo_catalog_t *cat = NULL;
+
+	if (!lmo_change_catalog(lang))
+		return 0;
+
+	if (!dir || !(dh = opendir(dir)))
+		goto err;
+
+	if (!(cat = malloc(sizeof(*cat))))
+		goto err;
+
+	memset(cat, 0, sizeof(*cat));
+
+	snprintf(cat->lang, sizeof(cat->lang), "%s", lang);
+	snprintf(pattern, sizeof(pattern), "*.%s.lmo", lang);
+
+	while ((de = readdir(dh)) != NULL)
+	{
+		if (!fnmatch(pattern, de->d_name, 0))
+		{
+			snprintf(path, sizeof(path), "%s/%s", dir, de->d_name);
+			ar = lmo_open(path);
+
+			if (ar)
+			{
+				ar->next = cat->archives;
+				cat->archives = ar;
+			}
+		}
+	}
+
+	closedir(dh);
+
+	cat->next = _lmo_catalogs;
+	_lmo_catalogs = cat;
+
+	if (!_lmo_active_catalog)
+		_lmo_active_catalog = cat;
+
+	return 0;
+
+err:
+	if (dh) closedir(dh);
+	if (cat) free(cat);
+
+	return -1;
+}
+
+int lmo_change_catalog(const char *lang)
+{
+	lmo_catalog_t *cat;
+
+	for (cat = _lmo_catalogs; cat; cat = cat->next)
+	{
+		if (!strncmp(cat->lang, lang, sizeof(cat->lang)))
+		{
+			_lmo_active_catalog = cat;
+			return 0;
+		}
+	}
+
+	return -1;
+}
+
+static lmo_entry_t * lmo_find_entry(lmo_archive_t *ar, uint32_t hash)
+{
+	unsigned int m, l, r;
+	uint32_t k;
+
+	l = 0;
+	r = ar->length - 1;
+
+	while (1)
+	{
+		m = l + ((r - l) / 2);
+
+		if (r < l)
+			break;
+
+		k = ntohl(ar->index[m].key_id);
+
+		if (k == hash)
+			return &ar->index[m];
+
+		if (k > hash)
+		{
+			if (!m)
+				break;
+
+			r = m - 1;
+		}
+		else
+		{
+			l = m + 1;
+		}
+	}
+
+	return NULL;
+}
+
+int lmo_translate(const char *key, int keylen, char **out, int *outlen)
+{
+	uint32_t hash;
+	lmo_entry_t *e;
+	lmo_archive_t *ar;
+
+	if (!key || !_lmo_active_catalog)
+		return -2;
+
+	hash = lmo_canon_hash(key, keylen);
+
+	for (ar = _lmo_active_catalog->archives; ar; ar = ar->next)
+	{
+		if ((e = lmo_find_entry(ar, hash)) != NULL)
+		{
+			*out = ar->mmap + ntohl(e->offset);
+			*outlen = ntohl(e->length);
+			return 0;
+		}
+	}
+
+	return -1;
+}
+
+void lmo_close_catalog(const char *lang)
+{
+	lmo_archive_t *ar, *next;
+	lmo_catalog_t *cat, *prev;
+
+	for (prev = NULL, cat = _lmo_catalogs; cat; prev = cat, cat = cat->next)
+	{
+		if (!strncmp(cat->lang, lang, sizeof(cat->lang)))
+		{
+			if (prev)
+				prev->next = cat->next;
+			else
+				_lmo_catalogs = cat->next;
+
+			for (ar = cat->archives; ar; ar = next)
+			{
+				next = ar->next;
+				lmo_close(ar);
+			}
+
+			free(cat);
+			break;
+		}
+	}
+}

package/luci-compat/tool/po2lmo/src/template_lmo.h

@@ -0,0 +1,92 @@
+/*
+ * lmo - Lua Machine Objects - General header
+ *
+ *   Copyright (C) 2009-2012 Jo-Philipp Wich <xm@subsignal.org>
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+#ifndef _TEMPLATE_LMO_H_
+#define _TEMPLATE_LMO_H_
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <string.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <arpa/inet.h>
+#include <unistd.h>
+#include <errno.h>
+#include <fnmatch.h>
+#include <dirent.h>
+#include <ctype.h>
+#include <limits.h>
+
+#if (defined(__GNUC__) && defined(__i386__))
+#define sfh_get16(d) (*((const uint16_t *) (d)))
+#else
+#define sfh_get16(d) ((((uint32_t)(((const uint8_t *)(d))[1])) << 8)\
+					   +(uint32_t)(((const uint8_t *)(d))[0]) )
+#endif
+
+
+struct lmo_entry {
+	uint32_t key_id;
+	uint32_t val_id;
+	uint32_t offset;
+	uint32_t length;
+} __attribute__((packed));
+
+typedef struct lmo_entry lmo_entry_t;
+
+
+struct lmo_archive {
+	int         fd;
+	int	        length;
+	uint32_t    size;
+	lmo_entry_t *index;
+	char        *mmap;
+	char		*end;
+	struct lmo_archive *next;
+};
+
+typedef struct lmo_archive lmo_archive_t;
+
+
+struct lmo_catalog {
+	char lang[6];
+	struct lmo_archive *archives;
+	struct lmo_catalog *next;
+};
+
+typedef struct lmo_catalog lmo_catalog_t;
+
+
+uint32_t sfh_hash(const char *data, int len);
+uint32_t lmo_canon_hash(const char *data, int len);
+
+lmo_archive_t * lmo_open(const char *file);
+void lmo_close(lmo_archive_t *ar);
+
+
+extern lmo_catalog_t *_lmo_catalogs;
+extern lmo_catalog_t *_lmo_active_catalog;
+
+int lmo_load_catalog(const char *lang, const char *dir);
+int lmo_change_catalog(const char *lang);
+int lmo_translate(const char *key, int keylen, char **out, int *outlen);
+void lmo_close_catalog(const char *lang);
+
+#endif

package/luci/control/control

@@ -4,5 +4,4 @@ Depends: libc, smartdns
 Source: feeds/luci/applications/luci-app-smartdns
 Section: luci
 Architecture: all
-Installed-Size: 1040
+Description:  A smartdns server
-Description:  A smartdns server module

package/luci/control/postinst

@@ -1,4 +1,20 @@
 #!/bin/sh
+#
+# Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+#
+# smartdns is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# smartdns is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
 [ "${IPKG_NO_SCRIPT}" = "1" ] && exit 0
 [ -x ${IPKG_INSTROOT}/lib/functions.sh ] || exit 0
 . ${IPKG_INSTROOT}/lib/functions.sh

package/luci/control/postinst-pkg

@@ -1,4 +0,0 @@
-[ -n "${IPKG_INSTROOT}" ] || {
-	(. /etc/uci-defaults/50_luci-smartdns) && rm -f /etc/uci-defaults/50_luci-smartdns
-	exit 0
-}

package/luci/control/prerm

@@ -1,4 +1,20 @@
 #!/bin/sh
+#
+# Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+#
+# smartdns is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# smartdns is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
 [ -x ${IPKG_INSTROOT}/lib/functions.sh ] || exit 0
 . ${IPKG_INSTROOT}/lib/functions.sh
 default_prerm $0 $@

package/luci/files/etc/uci-defaults/50_luci-smartdns

@@ -1,11 +0,0 @@
-#!/bin/sh
-
-uci -q batch <<-EOF >/dev/null
-	delete ucitrack.@smartdns[-1]
-	add ucitrack smartdns
-	set ucitrack.@smartdns[-1].init=smartdns
-	commit ucitrack
-EOF
-
-rm -f /tmp/luci-indexcache
-exit 0

package/luci/files/luci/i18n/smartdns.zh-cn.po

@@ -1,210 +1,311 @@
-msgid ""
+msgid ""
-msgstr "Content-Type: text/plain; charset=UTF-8\n"
+msgstr "Content-Type: text/plain; charset=UTF-8\n"
-
+
-msgid "SmartDNS"
+msgid "SmartDNS"
-msgstr "SmartDNS"
+msgstr "SmartDNS"
-
+
-msgid "SmartDNS is a local high-performance DNS server"
+msgid "SmartDNS is a local high-performance DNS server"
-msgstr "SmartDNS是一个本地高性能DNS服务器"
+msgstr "SmartDNS是一个本地高性能DNS服务器"
-
+
-msgid "SmartDNS Server"
+msgid "SmartDNS Server"
-msgstr "SmartDNS 服务器"
+msgstr "SmartDNS 服务器"
-
+
-msgid "SmartDNS is a local high-performance DNS server, supports finding fastest IP, supports ad filtering, and supports avoiding DNS poisoning."
+msgid "SmartDNS is a local high-performance DNS server, supports finding fastest IP, supports ad filtering, and supports avoiding DNS poisoning."
-msgstr "SmartDNS是一个本地高性能DNS服务器，支持避免域名污染，支持返回最快IP，支持广告过滤。"
+msgstr "SmartDNS是一个本地高性能DNS服务器，支持返回最快IP，支持广告过滤。"
-
+
-msgid "Custom Settings"
+msgid "Custom Settings"
-msgstr "自定义设置"
+msgstr "自定义设置"
-
+
-msgid "Generate Coredump"
+msgid "General Settings"
-msgstr "生成coredump"
+msgstr "基本设置"
-
+
-msgid "Generate Coredump file when smartdns crash, coredump file is located at /tmp/smartdns.xxx.core."
+msgid "Settings"
-msgstr "当smartdns异常时生成coredump文件，coredump文件在/tmp/smartdns.xxx.core."
+msgstr "设置"
-
+
-msgid "Server Name"
+msgid "Advanced Settings"
-msgstr "服务器名称"
+msgstr "高级设置"
-
+
-msgid "Smartdns server name"
+msgid "RUNNING"
-msgstr "SmartDNS的服务器名称，默认为smartdns，留空为主机名"
+msgstr "运行中"
-
+
-msgid "SmartDNS is a local dns server to find fastest ip."
+msgid "NOT RUNNING"
-msgstr "本地高性能服务器，优化网络访问性能。"
+msgstr "未运行"
-
+
-msgid "Enable or disable smartdns server"
+msgid "Generate Coredump"
-msgstr "启用或禁用SmartDNS服务"
+msgstr "生成coredump"
-
+
-msgid "Local Port"
+msgid "Generate Coredump file when smartdns crash, coredump file is located at /tmp/smartdns.xxx.core."
-msgstr "本地端口"
+msgstr "当smartdns异常时生成coredump文件，coredump文件在/tmp/smartdns.xxx.core."
-
+
-msgid "Smartdns local server port"
+msgid "Server Name"
-msgstr "SmartDNS本地服务端口"
+msgstr "服务器名称"
-
+
-msgid "IPV4 53 Port Redirect Failure"
+msgid "Smartdns server name"
-msgstr "IPV4 53端口重定向失败"
+msgstr "SmartDNS的服务器名称，默认为smartdns，留空为主机名"
-
+
-msgid "IPV6 53 Port Redirect Failure"
+msgid "SmartDNS is a local dns server to find fastest ip."
-msgstr "IPV6 53端口重定向失败"
+msgstr "本地高性能服务器，优化网络访问性能。"
-
+
-msgid "Dnsmasq Forwared To Smartdns Failure"
+msgid "Enable or disable smartdns server"
-msgstr "重定向dnsmasq到smartdns失败"
+msgstr "启用或禁用SmartDNS服务"
-
+
-msgid "TCP Server"
+msgid "Local Port"
-msgstr "TCP服务器"
+msgstr "本地端口"
-
+
-msgid "Enable TCP DNS Server"
+msgid "Smartdns local server port"
-msgstr "启用TCP服务器"
+msgstr "SmartDNS本地服务端口"
-
+
-msgid "IPV6 Server"
+msgid "IPV4 53 Port Redirect Failure"
-msgstr "IPV6服务器"
+msgstr "IPV4 53端口重定向失败"
-
+
-msgid "Enable IPV6 DNS Server"
+msgid "IPV6 53 Port Redirect Failure"
-msgstr "启用IPV6服务器"
+msgstr "IPV6 53端口重定向失败"
-
+
-msgid "Dual-stack IP Selection"
+msgid "Dnsmasq Forwared To Smartdns Failure"
-msgstr "双栈IP优选"
+msgstr "重定向dnsmasq到smartdns失败"
-
+
-msgid "Enable IP selection between IPV4 and IPV6"
+msgid "TCP Server"
-msgstr "启用或禁用IPV4，IPV6间的IP优选策略。"
+msgstr "TCP服务器"
-
+
-msgid "Domain prefetch"
+msgid "Enable TCP DNS Server"
-msgstr "域名预加载"
+msgstr "启用TCP服务器"
-
+
-msgid "Enable domain prefetch, accelerate domain response speed."
+msgid "IPV6 Server"
-msgstr "启用域名预加载，加速域名响应速度。"
+msgstr "IPV6服务器"
-
+
-msgid "Redirect"
+msgid "Enable IPV6 DNS Server"
-msgstr "重定向"
+msgstr "启用IPV6服务器"
-
+
-msgid "SmartDNS redirect mode"
+msgid "Dual-stack IP Selection"
-msgstr "SmartDNS 重定向模式"
+msgstr "双栈IP优选"
-
+
-msgid "Run as dnsmasq upstream server"
+msgid "Enable IP selection between IPV4 and IPV6"
-msgstr "作为dnsmasq的上游服务器"
+msgstr "启用或禁用IPV4，IPV6间的IP优选策略。"
-
+
-msgid "Redirect 53 port to SmartDNS"
+msgid "Domain prefetch"
-msgstr "重定向53端口到SmartDNS"
+msgstr "域名预加载"
-
+
-msgid "Cache Size"
+msgid "Enable domain prefetch, accelerate domain response speed."
-msgstr "缓存大小"
+msgstr "启用域名预加载，加速域名响应速度。"
-
+
-msgid "DNS domain result cache size"
+msgid "Serve expired"
-msgstr "缓存DNS的结果，缓存大小，配置零则不缓存"
+msgstr "缓存过期服务"
-
+
-msgid "Domain TTL"
+msgid "Attempts to serve old responses from cache with a TTL of 0 in the response without waiting for the actual resolution to finish."
-msgstr "域名TTL"
+msgstr "查询性能优化，有请求时尝试回应TTL为0的过期记录，以避免查询等待。"
-
+
-msgid "TTL for all domain result."
+msgid "Redirect"
-msgstr "设置所有域名的TTL值"
+msgstr "重定向"
-
+
-msgid "Domain TTL Min"
+msgid "SmartDNS redirect mode"
-msgstr "域名TTL最小值"
+msgstr "SmartDNS 重定向模式"
-
+
-msgid "Minimum TTL for all domain result."
+msgid "Run as dnsmasq upstream server"
-msgstr "设置所有域名的TTL最小值"
+msgstr "作为dnsmasq的上游服务器"
-
+
-msgid "Domain TTL Max"
+msgid "Redirect 53 port to SmartDNS"
-msgstr "域名TTL最大值"
+msgstr "重定向53端口到SmartDNS"
-
+
-msgid "Maximum TTL for all domain result."
+msgid "Cache Size"
-msgstr "设置所有域名的TTL最大值"
+msgstr "缓存大小"
-
+
-msgid "smartdns custom settings"
+msgid "DNS domain result cache size"
-msgstr "smartdns 自定义设置，具体配置参数参考指导"
+msgstr "缓存DNS的结果，缓存大小，配置零则不缓存"
-
+
-msgid "Upstream Servers"
+msgid "Domain TTL"
-msgstr "上游服务器"
+msgstr "域名TTL"
-
+
-msgid "Upstream Servers, support UDP, TCP protocol. Please configure multiple DNS servers, including multiple foreign DNS servers."
+msgid "TTL for all domain result."
-msgstr "上游DNS服务器列表，支持UDP，TCP协议，请配置多个上游DNS服务器，包括多个国内外服务器"
+msgstr "设置所有域名的TTL值"
-
+
-msgid "DNS Server Name"
+msgid "Domain TTL Min"
-msgstr "DNS服务器名称"
+msgstr "域名TTL最小值"
-
+
-msgid "port"
+msgid "Minimum TTL for all domain result."
-msgstr "端口"
+msgstr "设置所有域名的TTL最小值"
-
+
-msgid "DNS Server port"
+msgid "Domain TTL Max"
-msgstr "DNS服务器端口"
+msgstr "域名TTL最大值"
-
+
-msgid "DNS Server ip"
+msgid "Maximum TTL for all domain result."
-msgstr "DNS服务器IP"
+msgstr "设置所有域名的TTL最大值"
-
+
-msgid "type"
+msgid "smartdns custom settings"
-msgstr "类型"
+msgstr "smartdns 自定义设置，具体配置参数参考指导"
-
+
-msgid "DNS Server type"
+msgid "Second Server Settings"
-msgstr "协议类型"
+msgstr "第二DNS服务器"
-
+
-msgid "Domain Address"
+msgid "Enable or disable second DNS server."
-msgstr "域名地址"
+msgstr "是否启用第二DNS服务器。"
-
+
-msgid "Server Group"
+msgid "Skip Speed Check"
-msgstr "服务器组"
+msgstr "跳过测速"
-
+
-msgid "DNS Server group belongs to, used with nameserver, such as offlce, home."
+msgid "Do not check speed."
-msgsr "DNS服务器所属组， 配合nameserver使用，例如：office，home。"
+msgstr "禁用测速。"
-
+
-msgid "IP Blacklist Filtering"
+msgid "Server Group"
-msgstr "IP黑名单过滤"
+msgstr "服务器组"
-
+
-msgid "Anti Answer Forgery"
+msgid "Query DNS through specific dns server group, such as office, home."
-msgstr "反回答伪造"
+msgstr "使用指定服务器组查询，比如office, home。"
-
+
-msgid "Anti answer forgery, if DNS does not work properly after enabling, please turn off this feature"
+msgid "Skip Address Rules"
-msgstr "反回答伪造，如果启用后DNS工作不正常，请关闭此功能。"
+msgstr "跳过address规则"
-
+
-msgid "Filtering IP with blacklist"
+msgid "Skip address rules."
-msgstr "使用IP黑名单过滤"
+msgstr "跳过address规则。"
-
+
-msgid "TLS SPKI Pinning"
+msgid "Skip Nameserver Rule"
-msgstr "TLS SPKI 指纹"
+msgstr "跳过Nameserver规则"
-
+
-msgid "Used to verify the validity of the TLS server, The value is Base64 encoded SPKI fingerprint, leaving blank to indicate that the validity of TLS is not verified."
+msgid "Skip nameserver rules."
-msgstr "用于校验TLS服务器的有效性，数值为Base64编码的SPKI指纹, 留空表示不验证TLS的合法性"
+msgstr "跳过Nameserver规则。"
-
+
-msgid "Additional Server Args"
+msgid "Skip Ipset Rule"
-msgstr "额外的服务器参数"
+msgstr "跳过ipset规则"
-
+
-msgid "Additional Args for upstream dns servers"
+msgid "Skip ipset rules."
-msgstr "额外的上游DNS服务器参数"
+msgstr "跳过ipset规则。"
-
+
-msgid "Upstream DNS Server Configuration"
+msgid "Skip SOA Address Rule"
-msgstr "上游DNS服务器配置"
+msgstr "跳过address SOA(#)规则"
-
+
-msgid "Set Specific domain ip address."
+msgid "Skip SOA address rules."
-msgstr "指定特定域名的IP地址"
+msgstr "跳过address SOA(#)规则。"
-
+
-msgid "Specify an IP address to return for any host in the given domains, Queries in the domains are never forwarded and always replied to with the specified IP address which may be IPv4 or IPv6."
+msgid "Skip Dualstack Selection"
-msgstr "配置特定域名返回特定的IP地址，域名查询将不到上游服务器请求，直接返回配置的IP地址，可用于广告屏蔽。"
+msgstr "跳过双栈优选"
-
+
-msgid "IP Blacklist"
+msgid "Skip Dualstack Selection."
-msgstr "IP黑名单"
+msgstr "跳过双栈优选。"
-
+
-msgid "Set Specific ip blacklist."
+msgid "Skip Cache"
-msgstr "设置IP黑名单列表"
+msgstr "跳过cache"
-
+
-msgid "Configure IP blacklists that will be filtered from the results of specific DNS server."
+msgid "Skip Cache."
-msgstr "配置需要从指定域名服务器结果过滤的IP黑名单。"
+msgstr "跳过cache。"
-
+
-msgid "Technical Support"
+msgid "Force AAAA SOA"
-msgstr "技术支持"
+msgstr "停用IPV6地址解析"
-
+
-msgid "If you like this software, please buy me a cup of coffee."
+msgid "Force AAAA SOA."
-msgstr "如果本软件对你有帮助，请给作者加个蛋。"
+msgstr "停用IPV6地址解析。"
-
+
-msgid "SmartDNS official website"
+msgid "Upstream Servers"
-msgstr "SmartDNS官方网站"
+msgstr "上游服务器"
-
+
-msgid "open website"
+msgid "Upstream Servers, support UDP, TCP protocol. Please configure multiple DNS servers, including multiple foreign DNS servers."
-msgstr "打开网站"
+msgstr "上游DNS服务器列表，支持UDP，TCP协议，请配置多个上游DNS服务器，包括多个国内外服务器"
-
+
-msgid "Donate to smartdns"
+msgid "DNS Server Name"
-msgstr "捐助smartdns项目"
+msgstr "DNS服务器名称"
-
+
-msgid "Donate"
+msgid "port"
-msgstr "捐助"
+msgstr "端口"
-
+
-
+msgid "DNS Server port"
-
+msgstr "DNS服务器端口"
-
+
+msgid "DNS Server ip"
+msgstr "DNS服务器IP"
+
+msgid "type"
+msgstr "类型"
+
+msgid "DNS Server type"
+msgstr "协议类型"
+
+msgid "Domain Address"
+msgstr "域名地址"
+
+msgid "TLS Hostname Verify"
+msgstr "校验TLS主机名"
+
+msgid "Set TLS hostname to verify."
+msgstr "设置校验TLS主机名。"
+
+msgid "No check certificate"
+msgstr "停用证书校验"
+
+msgid "Do not check certificate."
+msgstr "不校验证书的合法性。"
+
+msgid "TLS SNI name"
+msgstr "TLS SNI名称"
+
+msgid "HTTP Host"
+msgstr "HTTP主机"
+
+msgid "Sets the server name indication for query."
+msgstr "设置查询时使用的服务器SNI名称。"
+
+msgid "Set the HTTP host used for the query. Use this parameter when the host of the URL address is an IP address."
+msgstr "设置查询时使用的HTTP主机，当URL地址的host是IP地址时，使用此参数。"
+
+msgid "Server Group"
+msgstr "服务器组"
+
+msgid "DNS Server group belongs to, used with nameserver, such as office, home."
+msgstr "DNS服务器所属组， 配合nameserver使用，例如：office，home。"
+
+msgid "IP Blacklist Filtering"
+msgstr "IP黑名单过滤"
+
+msgid "Anti Answer Forgery"
+msgstr "反回答伪造"
+
+msgid "Anti answer forgery, if DNS does not work properly after enabling, please turn off this feature"
+msgstr "反回答伪造，如果启用后DNS工作不正常，请关闭此功能。"
+
+msgid "Filtering IP with blacklist"
+msgstr "使用IP黑名单过滤"
+
+msgid "TLS SPKI Pinning"
+msgstr "TLS SPKI 指纹"
+
+msgid "Used to verify the validity of the TLS server, The value is Base64 encoded SPKI fingerprint, leaving blank to indicate that the validity of TLS is not verified."
+msgstr "用于校验TLS服务器的有效性，数值为Base64编码的SPKI指纹, 留空表示不验证TLS的合法性"
+
+msgid "Additional Server Args"
+msgstr "额外的服务器参数"
+
+msgid "Additional Args for upstream dns servers"
+msgstr "额外的上游DNS服务器参数"
+
+msgid "Upstream DNS Server Configuration"
+msgstr "上游DNS服务器配置"
+
+msgid "Set Specific domain ip address."
+msgstr "指定特定域名的IP地址"
+
+msgid "Specify an IP address to return for any host in the given domains, Queries in the domains are never forwarded and always replied to with the specified IP address which may be IPv4 or IPv6."
+msgstr "配置特定域名返回特定的IP地址，域名查询将不到上游服务器请求，直接返回配置的IP地址，可用于广告屏蔽。"
+
+msgid "IP Blacklist"
+msgstr "IP黑名单"
+
+msgid "Set Specific ip blacklist."
+msgstr "设置IP黑名单列表"
+
+msgid "Configure IP blacklists that will be filtered from the results of specific DNS server."
+msgstr "配置需要从指定域名服务器结果过滤的IP黑名单。"
+
+msgid "Technical Support"
+msgstr "技术支持"
+
+msgid "If you like this software, please buy me a cup of coffee."
+msgstr "如果本软件对你有帮助，请给作者加个蛋。"
+
+msgid "SmartDNS official website"
+msgstr "SmartDNS官方网站"
+
+msgid "open website"
+msgstr "打开网站"
+
+msgid "Donate to smartdns"
+msgstr "捐助smartdns项目"
+
+msgid "Donate"
+msgstr "捐助"

package/luci/files/luci/model/smartdns.lua

@@ -1,17 +0,0 @@
--- Copyright 2018 Nick Peng (pymumu@gmail.com)
-
-require ("nixio.fs")
-require ("luci.http")
-require ("luci.dispatcher")
-require ("nixio.fs")
-
-local uci = require "luci.model.uci".cursor()
-
-module("luci.model.smartdns", package.seeall)
-
-function get_config_option(module, section, option, default)
-	return uci:get_first(module, section, option) or default
-end
-
-return m
-

package/luci/files/root/usr/share/luci/menu.d/luci-app-smartdns.json

@@ -0,0 +1,12 @@
+{
+	"admin/services/smartdns": {
+		"title": "SmartDNS",
+		"action": {
+			"type": "view",
+			"path": "smartdns/smartdns"
+		},
+		"depends": {
+			"uci": { "smartdns": true }
+		}
+	}
+}

package/luci/files/root/usr/share/rpcd/acl.d/luci-app-smartdns.json

@@ -0,0 +1,23 @@
+{
+	"luci-app-smartdns": {
+		"description": "Grant access to LuCI app smartdns",
+		"read": {
+			"file": {
+				"/etc/smartdns/*": [ "read" ],
+				"/usr/sbin/iptables -t nat -nL PREROUTING": [ "exec" ],
+				"/usr/sbin/ip6tables -t nat -nL PREROUTING": [ "exec" ],
+				"/usr/sbin/smartdns": [ "exec" ]
+			},
+			"ubus": {
+				"service": [ "list" ]
+			},
+			"uci": [ "smartdns" ]
+		},
+		"write": {
+			"file": {
+				"/etc/smartdns/*": [ "write" ]
+			},
+			"uci": [ "smartdns" ]
+		}
+	}
+}

package/luci/files/root/www/luci-static/resources/view/smartdns/smartdns.js

@@ -0,0 +1,492 @@
+/*************************************************************************
+ *
+ * Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+ *
+ * smartdns is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * smartdns is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+'use strict';
+'require fs';
+'require uci';
+'require form';
+'require rpc';
+
+var conf = 'smartdns';
+var callServiceList = rpc.declare({
+	object: 'service',
+	method: 'list',
+	params: ['name'],
+	expect: { '': {} }
+});
+
+function getPidOfSmartdns() {
+	return L.resolveDefault(callServiceList(conf), {})
+		.then(function (res) {
+			var isrunning = false;
+			try {
+				isrunning = res[conf]['instances']['smartdns']['running'];
+			} catch (e) { }
+			return isrunning;
+		});
+}
+
+function getIPTablesRedirect() {
+	return fs.exec('/usr/sbin/iptables', ['-t', 'nat', '-nL', 'PREROUTING']).then(function (res) {
+		if (res.code === 0) {
+			return res.stdout.trim();
+		} else {
+			return "";
+		}
+	});
+}
+
+function getIP6TablesRedirect() {
+	return fs.exec('/usr/sbin/ip6tables', ['-t', 'nat', '-nL', 'PREROUTING']).then(function (res) {
+		if (res.code === 0) {
+			return res.stdout.trim();
+		} else {
+			return "";
+		}
+	});
+}
+
+function smartdnsServiceStatus() {
+	return Promise.all([
+		getPidOfSmartdns(),
+		getIPTablesRedirect(),
+		getIP6TablesRedirect()
+	]);
+}
+
+function smartdnsRenderStatus(res) {
+	var renderHTML = "";
+	var isRunning = res[0];
+	var ipt = res[1];
+	var ip6t = res[2];
+
+	var serverPort = uci.get_first('smartdns', 'smartdns', 'port');
+	var redirectMode = uci.get_first('smartdns', 'smartdns', 'redirect');
+	var ipv6Enabled = uci.get_first('smartdns', 'smartdns', 'ipv6_server');
+
+	if (isRunning) {
+		renderHTML += "<span style=\"color:green;font-weight:bold\">SmartDNS - " + _("RUNNING") + "</span>";
+	} else {
+		renderHTML += "<span style=\"color:red;font-weight:bold\">SmartDNS - " + _("NOT RUNNING") + "</span>";
+		return renderHTML;
+	}
+
+	if (redirectMode === "dnsmasq-upstream") {
+		var matchLine = "127.0.0.1#" + serverPort;
+		var dnsmasqServer = uci.get_first('dhcp', 'dnsmasq', 'server') || "";
+
+		if (dnsmasqServer.indexOf(matchLine) < 0) {
+			renderHTML += "<br /><span style=\"color:red;font-weight:bold\">" + _("Dnsmasq Forwared To Smartdns Failure") + "</span>";
+		}
+	} else if (redirectMode === "redirect") {
+		var redirectRules = (ipt || '').split(/\n/).filter(function (rule) {
+			return rule.match(/REDIRECT/) && rule.match(/dpt:53/) && rule.match("ports " + serverPort);
+		});
+
+		if (redirectRules.length <= 0) {
+			renderHTML += "<br /><span style=\"color:red;font-weight:bold\">" + _("IPV4 53 Port Redirect Failure") + "</span>";
+			if (ipv6Enabled) {
+				var redirectRules = (ip6t || '').split(/\n/).filter(function (rule) {
+					return rule.match(/REDIRECT/) && rule.match(/dpt:53/) && rule.match("ports " + serverPort);
+				});
+				if (redirectRules.length <= 0) {
+					renderHTML += "<br /><span style=\"color:red;font-weight:bold\">" + _("IPV6 53 Port Redirect Failure") + "</span>";
+				}
+			}
+		}
+	}
+
+	return renderHTML;
+}
+
+return L.view.extend({
+	load: function () {
+		return Promise.all([
+			uci.load('smartdns'),
+			uci.load('dhcp')
+		]);
+	},
+	render: function (stats) {
+		var m, s, o;
+
+		m = new form.Map('smartdns', _('SmartDNS'));
+		m.title = _("SmartDNS Server");
+		m.description = _("SmartDNS is a local high-performance DNS server, supports finding fastest IP, "
+			+ "supports ad filtering, and supports avoiding DNS poisoning.");
+
+		s = m.section(form.NamedSection, '_status');
+		s.anonymous = true;
+		s.render = function (section_id) {
+			L.Poll.add(function () {
+				return L.resolveDefault(smartdnsServiceStatus()).then(function (res) {
+					var view = document.getElementById("service_status");
+					view.innerHTML = smartdnsRenderStatus(res);
+				});
+			});
+
+			return E('div', { class: 'cbi-map' },
+				E('div', { class: 'cbi-section' }, [
+					E('div', { id: 'service_status' },
+						_('Collecting data ...'))
+				])
+			);
+		}
+
+		// Basic;
+		s = m.section(form.TypedSection, "smartdns", _("Settings"), _("General Settings"));
+		s.anonymous = true;
+
+		s.tab("settings", _("General Settings"));
+		s.tab("seconddns", _("Second Server Settings"));
+		s.tab("custom", _("Custom Settings"));
+
+		// Eanble;
+		o = s.taboption("settings", form.Flag, "enabled", _("Enable"), _("Enable or disable smartdns server"));
+		o.default = o.disabled;
+		o.rempty = false;
+
+		// server name;
+		o = s.taboption("settings", form.Value, "server_name", _("Server Name"), _("Smartdns server name"));
+		o.default = "smartdns";
+		o.datatype = "hostname";
+		o.rempty = false;
+
+		// Port;
+		o = s.taboption("settings", form.Value, "port", _("Local Port"), _("Smartdns local server port"));
+		o.placeholder = 6053;
+		o.default = 6053;
+		o.datatype = "port";
+		o.rempty = false;
+
+		// Enable TCP server;
+		o = s.taboption("settings", form.Flag, "tcp_server", _("TCP Server"), _("Enable TCP DNS Server"));
+		o.rmempty = false;
+		o.default = o.enabled;
+
+		// Support IPV6;
+		o = s.taboption("settings", form.Flag, "ipv6_server", _("IPV6 Server"), _("Enable IPV6 DNS Server"));
+		o.rmempty = false;
+		o.default = o.enabled;
+
+		// Support DualStack ip selection;
+		o = s.taboption("settings", form.Flag, "dualstack_ip_selection", _("Dual-stack IP Selection"),
+			_("Enable IP selection between IPV4 and IPV6"));
+		o.rmempty = false;
+		o.default = o.disabled;
+
+		// Domain prefetch load ;
+		o = s.taboption("settings", form.Flag, "prefetch_domain", _("Domain prefetch"),
+			_("Enable domain prefetch, accelerate domain response speed."));
+		o.rmempty = false;
+		o.default = o.disabled;
+
+		// Domain Serve expired
+		o = s.taboption("settings", form.Flag, "serve_expired", _("Serve expired"),
+			_("Attempts to serve old responses from cache with a TTL of 0 in the response without waiting for the actual resolution to finish."));
+		o.rmempty = false;
+		o.default = o.disabled;
+
+		// Redirect;
+		o = s.taboption("settings", form.ListValue, "redirect", _("Redirect"), _("SmartDNS redirect mode"));
+		o.placeholder = "none";
+		o.value("none", _("none"));
+		o.value("dnsmasq-upstream", _("Run as dnsmasq upstream server"));
+		o.value("redirect", _("Redirect 53 port to SmartDNS"));
+		o.default = "none";
+		o.rempty = false;
+
+		// cache-size;
+		o = s.taboption("settings", form.Value, "cache_size", _("Cache Size"), _("DNS domain result cache size"));
+		o.rempty = true;
+
+		// rr-ttl;
+		o = s.taboption("settings", form.Value, "rr_ttl", _("Domain TTL"), _("TTL for all domain result."));
+		o.rempty = true;
+
+		// rr-ttl-min;
+		o = s.taboption("settings", form.Value, "rr_ttl_min", _("Domain TTL Min"),
+			_("Minimum TTL for all domain result."));
+		o.rempty = true;
+		o.placeholder = "300";
+		o.default = 300;
+		o.optional = true;
+
+		// second dns server;
+		// rr-ttl-max;
+		o = s.taboption("settings", form.Value, "rr_ttl_max", _("Domain TTL Max"),
+			_("Maximum TTL for all domain result."));
+		o.rempty = true;
+
+		// Eanble;
+		o = s.taboption("seconddns", form.Flag, "seconddns_enabled", _("Enable"),
+			_("Enable or disable second DNS server."));
+		o.default = o.disabled;
+		o.rempty = false;
+
+		// Port;
+		o = s.taboption("seconddns", form.Value, "seconddns_port", _("Local Port"), _("Smartdns local server port"));
+		o.placeholder = 6553;
+		o.default = 6553;
+		o.datatype = "port";
+		o.rempty = false;
+
+		// Enable TCP server;
+		o = s.taboption("seconddns", form.Flag, "seconddns_tcp_server", _("TCP Server"), _("Enable TCP DNS Server"));
+		o.rmempty = false;
+		o.default = o.enabled;
+
+		// dns server group;
+		o = s.taboption("seconddns", form.Value, "seconddns_server_group", _("Server Group"),
+			_("Query DNS through specific dns server group, such as office, home."));
+		o.rmempty = true;
+		o.placeholder = "default";
+		o.datatype = "hostname";
+		o.rempty = true;
+
+		o = s.taboption("seconddns", form.Flag, "seconddns_no_speed_check", _("Skip Speed Check"),
+			_("Do not check speed."));
+		o.rmempty = false;
+		o.default = o.disabled;
+
+		// skip address rules;
+		o = s.taboption("seconddns", form.Flag, "seconddns_no_rule_addr", _("Skip Address Rules"),
+			_("Skip address rules."));
+		o.rmempty = false;
+		o.default = o.disabled;
+
+		// skip name server rules;
+		o = s.taboption("seconddns", form.Flag, "seconddns_no_rule_nameserver", _("Skip Nameserver Rule"),
+			_("Skip nameserver rules."));
+		o.rmempty = false;
+		o.default = o.disabled;
+
+		// skip ipset rules;
+		o = s.taboption("seconddns", form.Flag, "seconddns_no_rule_ipset", _("Skip Ipset Rule"),
+			_("Skip ipset rules."));
+		o.rmempty = false;
+		o.default = o.disabled;
+
+		// skip soa address rule;
+		o = s.taboption("seconddns", form.Flag, "seconddns_no_rule_soa", _("Skip SOA Address Rule"),
+			_("Skip SOA address rules."));
+		o.rmempty = false;
+		o.default = o.disabled;
+
+		o = s.taboption("seconddns", form.Flag, "seconddns_no_dualstack_selection", _("Skip Dualstack Selection"),
+			_("Skip Dualstack Selection."));
+		o.rmempty = false;
+		o.default = o.disabled;
+
+		// skip cache;
+		o = s.taboption("seconddns", form.Flag, "seconddns_no_cache", _("Skip Cache"), _("Skip Cache."));
+		o.rmempty = false;
+		o.default = o.disabled;
+
+		// Force AAAA SOA
+		o = s.taboption("seconddns", form.Flag, "force_aaaa_soa", _("Force AAAA SOA"), _("Force AAAA SOA."));
+		o.rmempty = false;
+		o.default = o.disabled;
+
+		// custom settings;
+		o = s.taboption("custom", form.TextValue, "custom_conf",
+			"", _("smartdns custom settings"));
+
+		o.rows = 20;
+		o.cfgvalue = function (section_id) {
+			return fs.trimmed('/etc/smartdns/custom.conf');
+		};
+		o.write = function (section_id, formvalue) {
+			return fs.write('/etc/smartdns/custom.conf', formvalue.trim().replace(/\r\n/g, '\n') + '\n');
+		};
+
+		o = s.taboption("custom", form.Flag, "coredump", _("Generate Coredump"),
+			_("Generate Coredump file when smartdns crash, coredump file is located at /tmp/smartdns.xxx.core."));
+		o.rmempty = false;
+		o.default = o.disabled;
+		// Upstream servers;
+		s = m.section(form.GridSection, "server", _("Upstream Servers"),
+			_("Upstream Servers, support UDP, TCP protocol. Please configure multiple DNS servers, "
+				+ "including multiple foreign DNS servers."));
+		s.anonymous = true;
+		s.addremove = true;
+
+		s.tab('general', _('General Settings'));
+		s.tab('advanced', _('Advanced Settings'));
+
+		// enable flag;
+		o = s.taboption("general", form.Flag, "enabled", _("Enable"), _("Enable"));
+		o.rmempty = false;
+		o.default = o.enabled;
+		o.editable = true;
+
+		// name;
+		o = s.taboption("general", form.Value, "name", _("DNS Server Name"), _("DNS Server Name"));
+
+		// IP address;
+		o = s.taboption("general", form.Value, "ip", _("ip"), _("DNS Server ip"));
+		o.datatype = "or(ipaddr, string)";
+		o.rmempty = false;
+
+		// port;
+		o = s.taboption("general", form.Value, "port", _("port"), _("DNS Server port"));
+		o.placeholder = "default";
+		o.datatype = "port";
+		o.rempty = true;
+		o.depends("type", "udp");
+		o.depends("type", "tcp");
+		o.depends("type", "tls");
+
+		// type;
+		o = s.taboption("general", form.ListValue, "type", _("type"), _("DNS Server type"));
+		o.placeholder = "udp";
+		o.value("udp", _("udp"));
+		o.value("tcp", _("tcp"));
+		o.value("tls", _("tls"));
+		o.value("https", _("https"));
+		o.default = "udp";
+		o.rempty = false;
+
+		// Advanced Options
+		// server group
+		o = s.taboption("advanced", form.Value, "server_group", _("Server Group"), _("DNS Server group belongs to, "
+			+ "used with nameserver, such as office, home."))
+		o.rmempty = true
+		o.placeholder = "default"
+		o.datatype = "hostname"
+		o.rempty = true
+		o.modalonly = true;
+
+		// blacklist_ip
+		o = s.taboption("advanced", form.Flag, "blacklist_ip", _("IP Blacklist Filtering"),
+			_("Filtering IP with blacklist"))
+		o.rmempty = false
+		o.default = o.disabled
+		o.modalonly = true;
+
+		// TLS host verify
+		o = s.taboption("advanced", form.Value, "tls_host_verify", _("TLS Hostname Verify"),
+			_("Set TLS hostname to verify."))
+		o.default = ""
+		o.datatype = "string"
+		o.rempty = true
+		o.modalonly = true;
+		o.depends("type", "tls")
+		o.depends("type", "https")
+
+		// certificate verify
+		o = s.taboption("advanced", form.Flag, "no_check_certificate", _("No check certificate"),
+			_("Do not check certificate."))
+		o.rmempty = false
+		o.default = o.disabled
+		o.modalonly = true;
+		o.depends("type", "tls")
+		o.depends("type", "https")
+
+		// SNI host name
+		o = s.taboption("advanced", form.Value, "host_name", _("TLS SNI name"),
+			_("Sets the server name indication for query."))
+		o.default = ""
+		o.datatype = "hostname"
+		o.rempty = true
+		o.modalonly = true;
+		o.depends("type", "tls")
+		o.depends("type", "https")
+
+		// http host
+		o = s.taboption("advanced", form.Value, "http_host", _("HTTP Host"),
+			_("Set the HTTP host used for the query. Use this parameter when the host of the URL address is an IP address."))
+		o.default = ""
+		o.datatype = "hostname"
+		o.rempty = true
+		o.modalonly = true;
+		o.depends("type", "https")
+
+		// SPKI pin
+		o = s.taboption("advanced", form.Value, "spki_pin", _("TLS SPKI Pinning"),
+			_("Used to verify the validity of the TLS server, The value is Base64 encoded SPKI fingerprint, "
+				+ "leaving blank to indicate that the validity of TLS is not verified."))
+		o.default = ""
+		o.datatype = "string"
+		o.rempty = true
+		o.modalonly = true;
+		o.depends("type", "tls")
+		o.depends("type", "https")
+
+		// other args
+		o = s.taboption("advanced", form.Value, "addition_arg", _("Additional Server Args"),
+			_("Additional Args for upstream dns servers"))
+		o.default = ""
+		o.rempty = true
+		o.modalonly = true;
+
+		// Doman addresss;
+		s = m.section(form.TypedSection, "smartdns", _("Advanced Settings"), _("Advanced Settings"));
+		s.anonymous = true;
+
+		s.tab("domain-address", _("Domain Address"), _("Set Specific domain ip address."));
+		s.tab("blackip-list", _("IP Blacklist"), _("Set Specific ip blacklist."));
+
+		o = s.taboption("domain-address", form.TextValue, "address_conf",
+			"",
+			_("Specify an IP address to return for any host in the given domains, Queries in the domains are never "
+				+ "forwarded and always replied to with the specified IP address which may be IPv4 or IPv6."));
+		o.rows = 20;
+		o.cfgvalue = function (section_id) {
+			return fs.trimmed('/etc/smartdns/address.conf');
+		};
+		o.write = function (section_id, formvalue) {
+			return fs.write('/etc/smartdns/address.conf', formvalue.trim().replace(/\r\n/g, '\n') + '\n');
+		};
+
+		// IP Blacklist;
+		// blacklist;
+		o = s.taboption("blackip-list", form.TextValue, "blackip_ip_conf",
+			"", _("Configure IP blacklists that will be filtered from the results of specific DNS server."));
+		o.rows = 20;
+		o.cfgvalue = function (section_id) {
+			return fs.trimmed('/etc/smartdns/blacklist-ip.conf');
+		};
+		o.write = function (section_id, formvalue) {
+			return fs.write('/etc/smartdns/blacklist-ip.conf', formvalue.trim().replace(/\r\n/g, '\n') + '\n');
+		};
+
+		// Doman addresss;
+		s = m.section(form.TypedSection, "smartdns", _("Technical Support"),
+			_("If you like this software, please buy me a cup of coffee."));
+		s.anonymous = true;
+
+		o = s.option(form.Button, "web");
+		o.title = _("SmartDNS official website");
+		o.inputtitle = _("open website");
+		o.inputstyle = "apply";
+		o.onclick = function () {
+			window.open("https://pymumu.github.io/smartdns", '_blank');
+		};
+
+		o = s.option(form.Button, "Donate");
+		o.title = _("Donate to smartdns");
+		o.inputtitle = _("Donate");
+		o.inputstyle = "apply";
+		o.onclick = function () {
+			window.open("https://pymumu.github.io/smartdns/#donate", '_blank');
+		};
+
+		return m.render();
+	}
+});

package/luci/make.sh

@@ -1,5 +1,19 @@
-#/bin/sh
+#!/bin/sh
-
+#
+# Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+#
+# smartdns is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# smartdns is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
 CURR_DIR=$(cd $(dirname $0);pwd)
 
 VER="`date +"1.%Y.%m.%d-%H%M"`"
@@ -12,63 +26,65 @@ showhelp()
 	echo "Options:"
 	echo " -o               output directory."
 	echo " --arch           archtecture."
-    echo " --ver            version."
+	echo " --ver            version."
 	echo " -h               show this message."
 }
 
 build_tool()
 {
-    make -C $ROOT/tool/po2lmo -j 
+	make -C $ROOT/tool/po2lmo -j 
-    PO2LMO="$ROOT/tool/po2lmo/src/po2lmo"
+	PO2LMO="$ROOT/tool/po2lmo/src/po2lmo"
 
 }
 
 clean_tool()
 {
-    make -C $ROOT/tool/po2lmo clean
+	make -C $ROOT/tool/po2lmo clean
 }
 
 build()
 {
 
-    ROOT=/tmp/luci-app-smartdns
+	ROOT=/tmp/luci-app-smartdns
-    rm -fr $ROOT
+	rm -fr $ROOT
 
-    mkdir -p $ROOT
+	mkdir -p $ROOT
-    cp $CURR_DIR/* $ROOT/ -af
+	cp $CURR_DIR/* $ROOT/ -af
-    cd $ROOT/
+	cd $ROOT/
-    build_tool
+	build_tool
-    mkdir $ROOT/root/usr/lib/lua/ -p
+	
-    cp $ROOT/files/luci $ROOT/root/usr/lib/lua/ -af
+	mkdir $ROOT/root/usr/lib/lua/luci -p
-    
+	mkdir $ROOT/root/usr/share/rpcd/acl.d/ -p
-    #Generate Language
+	cp $ROOT/files/luci/i18n $ROOT/root/usr/lib/lua/luci/ -avf
-    $PO2LMO $ROOT/files/luci/i18n/smartdns.zh-cn.po $ROOT/root/usr/lib/lua/luci/i18n/smartdns.zh-cn.lmo
-    rm $ROOT/root/usr/lib/lua/luci/i18n/smartdns.zh-cn.po
 
-    cp $ROOT/files/etc $ROOT/root/ -af
+	#Generate Language
-    INST_SIZE="`du -sb $ROOT/root/ | awk '{print $1}'`"
+	$PO2LMO $ROOT/files/luci/i18n/smartdns.zh-cn.po $ROOT/root/usr/lib/lua/luci/i18n/smartdns.zh-cn.lmo
-    
+	rm $ROOT/root/usr/lib/lua/luci/i18n/smartdns.zh-cn.po
-    sed -i "s/^Architecture.*/Architecture: $ARCH/g" $ROOT/control/control
-    sed -i "s/Version:.*/Version: $VER/" $ROOT/control/control
 
-    if [ ! -z "$INST_SIZE" ]; then
+	cp $ROOT/files/root/* $ROOT/root/ -avf
-        echo "Installed-Size: $INST_SIZE" >> $ROOT/control/control
+	INST_SIZE="`du -sb $ROOT/root/ | awk '{print $1}'`"
-    fi
+	
+	sed -i "s/^Architecture.*/Architecture: all/g" $ROOT/control/control
+	sed -i "s/Version:.*/Version: $VER/" $ROOT/control/control
 
-    cd $ROOT/control
+	if [ ! -z "$INST_SIZE" ]; then
-    chmod +x *
+		echo "Installed-Size: $INST_SIZE" >> $ROOT/control/control
-    tar zcf ../control.tar.gz ./
+	fi
-    cd $ROOT
 
-    tar zcf $ROOT/data.tar.gz -C root .
+	cd $ROOT/control
-    tar zcf $OUTPUTDIR/luci-app-smartdns.$VER.$ARCH.ipk control.tar.gz data.tar.gz debian-binary
+	chmod +x *
+	tar zcf ../control.tar.gz ./
+	cd $ROOT
 
-    rm -fr $ROOT/
+	tar zcf $ROOT/data.tar.gz -C root .
+	tar zcf $OUTPUTDIR/luci-app-smartdns.$VER.$FILEARCH.ipk ./control.tar.gz ./data.tar.gz ./debian-binary
+
+	rm -fr $ROOT/
 }
 
 main()
 {
-	OPTS=`getopt -o o:h --long arch:,ver: \
+	OPTS=`getopt -o o:h --long arch:,ver:,filearch: \
 		-n  "" -- "$@"`
 
 	if [ $? != 0 ] ; then echo "Terminating..." >&2 ; exit 1 ; fi
@@ -81,31 +97,38 @@ main()
 		--arch)
 			ARCH="$2"
 			shift 2;;
-        --ver)
+		--filearch)
-            VER="$2"
+			FILEARCH="$2"
-            shift 2;;
+			shift 2;;
+		--ver)
+			VER="$2"
+			shift 2;;
 		-o )
 			OUTPUTDIR="$2"
 			shift 2;;
-        -h | --help )
+		-h | --help )
 			showhelp
 			return 0
 			shift ;;
 		-- ) shift; break ;;
 		* ) break ;;
-  		esac
+		esac
 	done
 
-    if [ -z "$ARCH" ]; then
+	if [ -z "$ARCH" ]; then
-        echo "please input arch."
+		echo "please input arch."
-        return 1;
+		return 1;
-    fi
+	fi
 
-    if [ -z "$OUTPUTDIR" ]; then
+	if [ -z "$FILEARCH" ]; then
-        OUTPUTDIR=$CURR_DIR;
+		FILEARCH=$ARCH
-    fi
+	fi
 
-    build
+	if [ -z "$OUTPUTDIR" ]; then
+		OUTPUTDIR=$CURR_DIR;
+	fi
+
+	build
 }
 
 main $@

package/openwrt/Makefile

@@ -1,34 +1,62 @@
+#
+# Copyright (c) 2018-2019 Nick Peng (pymumu@gmail.com)
+# This is free software, licensed under the GNU General Public License v3.
+#
+
 include $(TOPDIR)/rules.mk
 
-PKG_NAME:=smarttdns
+PKG_NAME:=smartdns
-PKG_VERSION:=2018.7.1.1607
+PKG_VERSION:=1.2019.28
-PKG_RELEASE:=$(PKG_SOURCE_VERSION)
+PKG_RELEASE:=1
 
-PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)-$(PKG_VERSION)
+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
+PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION)
+
+PKG_SOURCE_PROTO:=git
+PKG_SOURCE_URL:=https://www.github.com/pymumu/smartdns.git
+PKG_SOURCE_VERSION:=982002e836e486fb4e360bc10e84e7e7197caf46
+PKG_MIRROR_HASH:=ae889b521ecf114660ce5597af5c361f5970a7dcb75dadf61b938ba3d2baba54
+
+PKG_MAINTAINER:=Nick Peng <pymumu@gmail.com>
+PKG_LICENSE:=GPL-3.0-or-later
+PKG_LICENSE_FILES:=LICENSE
+
+PKG_BUILD_PARALLEL:=1
 
 include $(INCLUDE_DIR)/package.mk
 
+MAKE_VARS += VER=$(PKG_VERSION) 
+MAKE_PATH:=src
+
 define Package/smartdns
-	SECTION:=net
+  SECTION:=net
-	CATEGORY:=Network
+  CATEGORY:=Network
-	TITLE:=smartdns
+  TITLE:=smartdns server
-	URL:=https://github.com/pymumu/smartdns
+  DEPENDS:=+libpthread +libopenssl
-	MAINTAINER:=Nick Peng <pymumu@gmail.com>
+  URL:=https://www.github.com/pymumu/smartdns/
-	DEPENDS:=
 endef
 
 define Package/smartdns/description
-	smartdns server, find fastest ip.
+SmartDNS is a local DNS server which accepts DNS query requests from local network clients,
+get DNS query results from multiple upstream DNS servers concurrently, and returns the fastest IP to clients.
+Unlike dnsmasq's all-servers, smartdns returns the fastest IP. 
 endef
 
-define Build/Prepare
+define Package/smartdns/conffiles
-	mkdir -p $(PKG_BUILD_DIR)
+/etc/config/smartdns
-	cp -r ../* $(PKG_BUILD_DIR)
+/etc/smartdns/address.conf
+/etc/smartdns/blacklist-ip.conf
+/etc/smartdns/custom.conf
 endef
 
 define Package/smartdns/install
-	$(INSTALL_DIR) $(1)/usr/sbin
+	$(INSTALL_DIR) $(1)/usr/sbin $(1)/etc/config $(1)/etc/init.d $(1)/etc/smartdns
-	$(INSTALL_BIN) $(PKG_BUILD_DIR)/smartdns $(1)/usr/sbin
+	$(INSTALL_BIN) $(PKG_BUILD_DIR)/src/smartdns $(1)/usr/sbin/smartdns
+	$(INSTALL_BIN) $(PKG_BUILD_DIR)/package/openwrt/files/etc/init.d/smartdns $(1)/etc/init.d/smartdns
+	$(INSTALL_CONF) $(PKG_BUILD_DIR)/package/openwrt/address.conf $(1)/etc/smartdns/address.conf
+	$(INSTALL_CONF) $(PKG_BUILD_DIR)/package/openwrt/blacklist-ip.conf $(1)/etc/smartdns/blacklist-ip.conf
+	$(INSTALL_CONF) $(PKG_BUILD_DIR)/package/openwrt/custom.conf $(1)/etc/smartdns/custom.conf
+	$(INSTALL_CONF) $(PKG_BUILD_DIR)/package/openwrt/files/etc/config/smartdns $(1)/etc/config/smartdns
 endef
 
-$(eval $(call BuildPackage, smartdns))
+$(eval $(call BuildPackage,smartdns))

package/openwrt/address.conf

@@ -1,16 +1,16 @@
-# Add domains which you want to force to an IP address here.
+# Add domains which you want to force to an IP address here.
-# The example below send any host in example.com to a local webserver.
+# The example below send any host in example.com to a local webserver.
-# address /domain/[ip|-|-4|-6|#|#4|#6]
+# address /domain/[ip|-|-4|-6|#|#4|#6]
-# address /www.example.com/1.2.3.4, return ip 1.2.3.4 to client
+# address /www.example.com/1.2.3.4, return ip 1.2.3.4 to client
-# address /www.example.com/-, ignore address, query from upstream, suffix 4, for ipv4, 6 for ipv6, none for all
+# address /www.example.com/-, ignore address, query from upstream, suffix 4, for ipv4, 6 for ipv6, none for all
-# address /www.example.com/#, return SOA to client, suffix 4, for ipv4, 6 for ipv6, none for all
+# address /www.example.com/#, return SOA to client, suffix 4, for ipv4, 6 for ipv6, none for all
-
+
-# specific ipset to domain
+# specific ipset to domain
-# ipset /domain/[ipset|-]
+# ipset /domain/[ipset|-]
-# ipset /www.example.com/block, set ipset with ipset name of block 
+# ipset /www.example.com/block, set ipset with ipset name of block 
-# ipset /www.example.com/-, ignore this domain
+# ipset /www.example.com/-, ignore this domain
-
+
-# specific nameserver to domain
+# specific nameserver to domain
-# nameserver /domain/[group|-]
+# nameserver /domain/[group|-]
-# nameserver /www.example.com/office, Set the domain name to use the appropriate server group.
+# nameserver /www.example.com/office, Set the domain name to use the appropriate server group.
-# nameserver /www.example.com/-, ignore this domain
+# nameserver /www.example.com/-, ignore this domain

package/openwrt/blacklist-ip.conf

@@ -1,4 +1,4 @@
-# Add IP blacklist which you want to filtering from some DNS server here.
+# Add IP blacklist which you want to filtering from some DNS server here.
-# The example below filtering ip from the result of DNS server which is configured with -blacklist-ip.
+# The example below filtering ip from the result of DNS server which is configured with -blacklist-ip.
-# blacklist-ip [ip/subnet]
+# blacklist-ip [ip/subnet]
 # blacklist-ip 254.0.0.1/16

package/openwrt/control/postinst

@@ -1,4 +1,19 @@
 #!/bin/sh
+#
+# Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+#
+# smartdns is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# smartdns is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 chmod +x /usr/sbin/smartdns
 chmod +x /etc/init.d/smartdns

package/openwrt/control/prerm

@@ -1,4 +1,20 @@
 #!/bin/sh
+#
+# Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+#
+# smartdns is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# smartdns is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
 . ${IPKG_INSTROOT}/lib/functions.sh
 default_prerm $0 $@
 rm /var/etc/smartdns.conf -f

package/openwrt/custom.conf

@@ -1,14 +1,14 @@
-# Add custom settings here.
+# Add custom settings here.
-
+
-# set log level
+# set log level
-# log-level [level], level=fatal, error, warn, notice, info, debug
+# log-level [level], level=fatal, error, warn, notice, info, debug
-# log-level error
+# log-level error
-
+
-# log-size k,m,g
+# log-size k,m,g
-# log-size 128k
+# log-size 128k
-
+
-# log-file /var/log/smartdns.log
+# log-file /var/log/smartdns.log
-# log-num 2
+# log-num 2
-
+
-# List of hosts that supply bogus NX domain results 
+# List of hosts that supply bogus NX domain results 
 # bogus-nxdomain [ip/subnet]

package/openwrt/files/etc/init.d/smartdns

@@ -1,5 +1,19 @@
 #!/bin/sh /etc/rc.common
-# Copyright (C) 2018 Nick Peng (pymumu@gmail.com)
+#
+# Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+#
+# smartdns is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# smartdns is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 START=99
 NAME=smartdns
@@ -8,7 +22,6 @@ SERVICE_USE_PID=1
 SERVICE_WRITE_PID=1
 SERVICE_DAEMONIZE=1
 SERVICE_PID_FILE="/var/run/smartdns.pid"
-BASECONFIGFILE="/etc/smartdns/smartdns.conf"
 SMARTDNS_CONF_DIR="/etc/smartdns"
 SMARTDNS_VAR_CONF_DIR="/var/etc/smartdns"
 SMARTDNS_CONF="$SMARTDNS_VAR_CONF_DIR/smartdns.conf"
@@ -23,22 +36,18 @@ set_forward_dnsmasq()
 {
 	local PORT="$1"
 	addr="127.0.0.1#$PORT"
-	OLD_SERVER="`uci get dhcp.@dnsmasq[0].server 2>/dev/null`"
+	OLD_SERVER="$(uci get dhcp.@dnsmasq[0].server 2>/dev/null)"
-	echo $OLD_SERVER | grep "^$addr" >/dev/null 2>&1
+	if echo "$OLD_SERVER" | grep "^$addr" >/dev/null 2>&1; then
-	if [ $? -eq 0 ]; then
 		return
 	fi
 	uci delete dhcp.@dnsmasq[0].server 2>/dev/null
-	uci add_list dhcp.@dnsmasq[0].server=$addr
+	uci add_list dhcp.@dnsmasq[0].server="$addr"
 	for server in $OLD_SERVER; do
-		if [ "$server" = "$addr" ]; then
+		[ "$server" = "$addr" ] && continue
-			continue
+		uci add_list dhcp.@dnsmasq[0].server="$server"
-		fi
-		uci add_list dhcp.@dnsmasq[0].server=$server
 	done
-	uci delete dhcp.@dnsmasq[0].resolvfile 2>/dev/null
 	uci set dhcp.@dnsmasq[0].noresolv=1
-	uci commit dhcp 
+	uci commit dhcp
 	/etc/init.d/dnsmasq restart
 }
 
@@ -46,18 +55,16 @@ stop_forward_dnsmasq()
 {
 	local OLD_PORT="$1"
 	addr="127.0.0.1#$OLD_PORT"
-	OLD_SERVER="`uci get dhcp.@dnsmasq[0].server 2>/dev/null`"
+	OLD_SERVER="$(uci get dhcp.@dnsmasq[0].server 2>/dev/null)"
-	echo $OLD_SERVER | grep "^$addr" >/dev/null 2>&1
+	if ! echo "$OLD_SERVER" | grep "^$addr" >/dev/null 2>&1; then
-	if [ $? -ne 0 ]; then
 		return
 	fi
 
-	uci del_list dhcp.@dnsmasq[0].server=$addr 2>/dev/null
+	uci del_list dhcp.@dnsmasq[0].server="$addr" 2>/dev/null
-	addrlist="`uci get dhcp.@dnsmasq[0].server 2>/dev/null`"
+	addrlist="$(uci get dhcp.@dnsmasq[0].server 2>/dev/null)"
-	if [ -z "$addrlist" ] ; then
+	[ -z "$addrlist" ] && {
-		uci set dhcp.@dnsmasq[0].resolvfile=/tmp/resolv.conf.auto 2>/dev/null
 		uci delete dhcp.@dnsmasq[0].noresolv 2>/dev/null
-	fi
+	}
 	uci commit dhcp
 	/etc/init.d/dnsmasq restart
 }
@@ -67,26 +74,24 @@ set_iptable()
 	local ipv6_server=$1
 	local tcp_server=$2
 
-	IPS="`ifconfig | grep "inet addr" | grep -v ":127" | grep "Bcast" | awk '{print $2}' | awk -F : '{print $2}'`"
+	IPS="$(ifconfig | grep "inet addr" | grep -v ":127" | grep "Bcast" | awk '{print $2}' | awk -F : '{print $2}')"
 	for IP in $IPS
 	do
-		if [ "$tcp_server" == "1" ]; then
+		if [ "$tcp_server" = "1" ]; then
-			iptables -t nat -A PREROUTING -p tcp -d $IP --dport 53 -j REDIRECT --to-ports $SMARTDNS_PORT >/dev/null 2>&1
+			iptables -t nat -A PREROUTING -p tcp -d "$IP" --dport 53 -j REDIRECT --to-ports "$SMARTDNS_PORT" >/dev/null 2>&1
 		fi
-		iptables -t nat -A PREROUTING -p udp -d $IP --dport 53 -j REDIRECT --to-ports $SMARTDNS_PORT >/dev/null 2>&1
+		iptables -t nat -A PREROUTING -p udp -d "$IP" --dport 53 -j REDIRECT --to-ports "$SMARTDNS_PORT" >/dev/null 2>&1
 	done
 
-	if [ "$ipv6_server" == 0 ]; then
+	[ "$ipv6_server" = 0 ] && return
-		return
-	fi
 
-	IPS="`ifconfig | grep "inet6 addr" | grep -v " fe80::" | grep -v " ::1" | grep "Global" | awk '{print $3}'`"
+	IPS="$(ifconfig | grep "inet6 addr" | grep -v " fe80::" | grep -v " ::1" | grep "Global" | awk '{print $3}')"
 	for IP in $IPS
 	do
-		if [ "$tcp_server" == "1" ]; then
+		if [ "$tcp_server" = "1" ]; then
-			ip6tables -t nat -A PREROUTING -p tcp -d $IP --dport 53 -j REDIRECT --to-ports $SMARTDNS_PORT >/dev/null 2>&1
+			ip6tables -t nat -A PREROUTING -p tcp -d "$IP" --dport 53 -j REDIRECT --to-ports "$SMARTDNS_PORT" >/dev/null 2>&1
 		fi
-		ip6tables -t nat -A PREROUTING -p udp -d $IP --dport 53 -j REDIRECT --to-ports $SMARTDNS_PORT >/dev/null 2>&1
+		ip6tables -t nat -A PREROUTING -p udp -d "$IP" --dport 53 -j REDIRECT --to-ports "$SMARTDNS_PORT" >/dev/null 2>&1
 	done
 
 }
@@ -95,24 +100,22 @@ clear_iptable()
 {
 	local OLD_PORT="$1"
 	local ipv6_server=$2
-	IPS="`ifconfig | grep "inet addr" | grep -v ":127" | grep "Bcast" | awk '{print $2}' | awk -F : '{print $2}'`"
+	IPS="$(ifconfig | grep "inet addr" | grep -v ":127" | grep "Bcast" | awk '{print $2}' | awk -F : '{print $2}')"
 	for IP in $IPS
 	do
-		iptables -t nat -D PREROUTING -p udp -d $IP --dport 53 -j REDIRECT --to-ports $OLD_PORT >/dev/null 2>&1
+		iptables -t nat -D PREROUTING -p udp -d "$IP" --dport 53 -j REDIRECT --to-ports "$OLD_PORT" >/dev/null 2>&1
-		iptables -t nat -D PREROUTING -p tcp -d $IP --dport 53 -j REDIRECT --to-ports $OLD_PORT >/dev/null 2>&1
+		iptables -t nat -D PREROUTING -p tcp -d "$IP" --dport 53 -j REDIRECT --to-ports "$OLD_PORT" >/dev/null 2>&1
 	done
 
-	if [ "$ipv6_server" == 0 ]; then
+	[ "$ipv6_server" = 0 ] && return
-		return
-	fi
 
-	IPS="`ifconfig | grep "inet6 addr" | grep -v " fe80::" | grep -v " ::1" | grep "Global" | awk '{print $3}'`"
+	IPS="$(ifconfig | grep "inet6 addr" | grep -v " fe80::" | grep -v " ::1" | grep "Global" | awk '{print $3}')"
 	for IP in $IPS
 	do
-		ip6tables -t nat -D PREROUTING -p udp -d $IP --dport 53 -j REDIRECT --to-ports $OLD_PORT >/dev/null 2>&1
+		ip6tables -t nat -D PREROUTING -p udp -d "$IP" --dport 53 -j REDIRECT --to-ports "$OLD_PORT" >/dev/null 2>&1
-		ip6tables -t nat -D PREROUTING -p tcp -d $IP --dport 53 -j REDIRECT --to-ports $OLD_PORT >/dev/null 2>&1
+		ip6tables -t nat -D PREROUTING -p tcp -d "$IP" --dport 53 -j REDIRECT --to-ports "$OLD_PORT" >/dev/null 2>&1
 	done
-	
+
 }
 
 service_triggers() {
@@ -120,31 +123,49 @@ service_triggers() {
 	procd_add_reload_trigger smartdns
 }
 
-
 conf_append()
 {
 	echo "$1 $2" >> $SMARTDNS_CONF_TMP
 }
 
+get_tz()
+{
+	SET_TZ=""
+
+	[ -e "/etc/localtime" ] && return
+
+	for tzfile in /etc/TZ /var/etc/TZ
+	do
+		[ -e "$tzfile" ] || continue
+		tz="$(cat $tzfile 2>/dev/null)"
+	done
+
+	[ -z "$tz" ] && return
+
+	SET_TZ=$tz
+}
+
 load_server()
 {
 	local section="$1"
 	local ADDITIONAL_ARGS=""
 	local DNS_ADDRESS=""
 
-	config_get_bool "enabled" "$section" "enabled" "1"
+	config_get_bool enabled "$section" "enabled" "1"
-	config_get "port" "$section" "port" ""
+	config_get port "$section" "port" ""
-	config_get "type" "$section" "type" "udp"
+	config_get type "$section" "type" "udp"
-	config_get "ip" "$section" "ip" ""
+	config_get ip "$section" "ip" ""
-	config_get "server_group" "$section" "server_group" ""
+	config_get tls_host_verify "$section" "tls_host_verify" ""
-	config_get "blacklist_ip" "$section" "blacklist_ip" "0"
+	config_get no_check_certificate "$section" "no_check_certificate" ""
-	config_get "check_edns" "$section" "check_edns" "0"
+	config_get host_name "$section" "host_name" ""
-	config_get "spki_pin" "$section" "spki_pin" ""
+	config_get http_host "$section" "http_host" ""
-	config_get "addition_arg" "$section" "addition_arg" ""
+	config_get server_group "$section" "server_group" ""
+	config_get blacklist_ip "$section" "blacklist_ip" "0"
+	config_get check_edns "$section" "check_edns" "0"
+	config_get spki_pin "$section" "spki_pin" ""
+	config_get addition_arg "$section" "addition_arg" ""
 
-	if [ "$enabled" = "0" ]; then
+	[ "$enabled" = "0" ] && return
-		return
-	fi
 
 	if [ -z "$ip" ] || [ -z "$type" ]; then
 		return
@@ -159,144 +180,161 @@ load_server()
 		SERVER="server-https"
 	fi
 
-	if [ ! -z "`echo $ip | grep ":" | grep -v "https://"`" ]; then
+	if echo "$ip" | grep ":" | grep -q -v "https://" >/dev/null 2>&1; then
-		if [ -z "`echo $ip | grep "\["`" ]; then
+		if ! echo "$ip" | grep -q "\\[" >/dev/null 2>&1; then
 			ip="[$ip]"
 		fi
 	fi
 
-	if [ ! -z "$server_group" ]; then
+	[ -z "$tls_host_verify" ] || ADDITIONAL_ARGS="$ADDITIONAL_ARGS -tls-host-verify $tls_host_verify"
-		ADDITIONAL_ARGS="$ADDITIONAL_ARGS -group $server_group"
+	[ -z "$no_check_certificate" ] || ADDITIONAL_ARGS="$ADDITIONAL_ARGS -no-check-certificate"
-	fi
+	[ -z "$host_name" ] || ADDITIONAL_ARGS="$ADDITIONAL_ARGS -host-name $host_name"
+	[ -z "$http_host" ] || ADDITIONAL_ARGS="$ADDITIONAL_ARGS -http-host $http_host"
+	[ -z "$server_group" ] || ADDITIONAL_ARGS="$ADDITIONAL_ARGS -group $server_group"
+	[ "$blacklist_ip" = "0" ] || ADDITIONAL_ARGS="$ADDITIONAL_ARGS -blacklist-ip"
+	[ "$check_edns" = "0" ] || ADDITIONAL_ARGS="$ADDITIONAL_ARGS -check-edns"
+	[ -z "$spki_pin" ] || ADDITIONAL_ARGS="$ADDITIONAL_ARGS -spki-pin $spki_pin"
 
-	if [ "$blacklist_ip" != "0" ]; then
+	if [ -z "$port" ]; then
-		ADDITIONAL_ARGS="$ADDITIONAL_ARGS -blacklist-ip"
+		DNS_ADDRESS="$ip"
-	fi
-
-	if [ "$check_edns" != "0" ]; then
-		ADDITIONAL_ARGS="$ADDITIONAL_ARGS -check-edns"
-	fi
-
-	if [ ! -z "$spki_pin" ]; then
-		ADDITIONAL_ARGS="$ADDITIONAL_ARGS -spki-pin $spki_pin"
-	fi
-
-	if [ ! -z "$port" ]; then
-		DNS_ADDRESS="$ip:$port"
 	else
-		DNS_ADDRESS="$ip"
+		DNS_ADDRESS="$ip:$port"
 	fi
 
-	if [ "$type" = "https" ]; then
+	[ "$type" = "https" ] && DNS_ADDRESS="$ip"
-		DNS_ADDRESS="$ip"
-	fi
 
 	conf_append "$SERVER" "$DNS_ADDRESS $ADDITIONAL_ARGS $addition_arg"
 }
 
-load_service() {
+load_second_server()
+{
+	local section="$1"
+	local ARGS=""
+	local ADDR=""
+
+	config_get_bool seconddns_enabled "$section" "seconddns_enabled" "0"
+	[ "$seconddns_enabled" = "0" ] && return
+
+	config_get seconddns_port "$section" "seconddns_port" "6553"
+
+	config_get_bool seconddns_no_speed_check "$section" "seconddns_no_speed_check" "0"
+	[ "$seconddns_no_speed_check" = "1" ] && ARGS="$ARGS -no-speed-check"
+
+	config_get seconddns_server_group "$section" "seconddns_server_group" ""
+	[ -z "$seconddns_server_group" ] || ARGS="$ARGS -group $seconddns_server_group"
+
+	config_get_bool seconddns_no_rule_addr "$section" "seconddns_no_rule_addr" "0"
+	[ "$seconddns_no_rule_addr" = "1" ] && ARGS="$ARGS -no-rule-addr"
+
+	config_get_bool seconddns_no_rule_nameserver "$section" "seconddns_no_rule_nameserver" "0"
+	[ "$seconddns_no_rule_nameserver" = "1" ] && ARGS="$ARGS -no-rule-nameserver"
+
+	config_get_bool seconddns_no_rule_ipset "$section" "seconddns_no_rule_ipset" "0"
+	[ "$seconddns_no_rule_ipset" = "1" ] && ARGS="$ARGS -no-rule-ipset"
+
+	config_get_bool seconddns_no_rule_soa "$section" "seconddns_no_rule_soa" "0"
+	[ "$seconddns_no_rule_soa" = "1" ] && ARGS="$ARGS -no-rule-soa"
+
+	config_get_bool seconddns_no_dualstack_selection "$section" "seconddns_no_dualstack_selection" "0"
+	[ "$seconddns_no_dualstack_selection" = "1" ] && ARGS="$ARGS -no-dualstack-selection"
+
+	config_get_bool seconddns_no_cache "$section" "seconddns_no_cache" "0"
+	[ "$seconddns_no_cache" = "1" ] && ARGS="$ARGS -no-cache"
+
+	config_get_bool force_aaaa_soa "$section" "force_aaaa_soa" "0"
+	[ "$force_aaaa_soa" = "1" ] && ARGS="$ARGS -force-aaaa-soa"
+
+	config_get ipv6_server "$section" "ipv6_server" "1"
+	if [ "$ipv6_server" = "1" ]; then
+		ADDR="[::]"
+	else
+		ADDR=""
+	fi
+
+	conf_append "bind" "$ADDR:$seconddns_port $ARGS"
+	config_get_bool "seconddns_tcp_server" "$section" "seconddns_tcp_server" "1"
+	[ "$seconddns_tcp_server" = "1" ] && conf_append "bind-tcp" "$ADDR:$seconddns_port $ARGS"
+}
+
+load_service()
+{
 	local section="$1"
 	args=""
 
 	mkdir -p $SMARTDNS_VAR_CONF_DIR
 	rm -f $SMARTDNS_CONF_TMP
 
-	config_get_bool "enabled" "$section" "enabled" '0'
+	config_get_bool enabled "$section" "enabled" '0'
 
-	config_get "server_name" "$section" "server_name" ""
+	config_get server_name "$section" "server_name" ""
-	if [ ! -z "$server_name" ]; then
+	[ -z "$server_name" ] || conf_append "server-name" "$server_name"
-		conf_append "server-name" "$server_name"	
-	fi
 
-	config_get "coredump" "$section" "coredump" "0"
+	config_get coredump "$section" "coredump" "0"
-	if [ "$coredump" = "1" ]; then
+	[ "$coredump" = "1" ] && COREDUMP="1"
-		COREDUMP="1"
-	fi
 
-	config_get "port" "$section" "port" "6053"
+	config_get port "$section" "port" "6053"
-	config_get "ipv6_server" "$section" "ipv6_server" "1"
+	config_get ipv6_server "$section" "ipv6_server" "1"
-	config_get "tcp_server" "$section" "tcp_server" "1"
+	config_get tcp_server "$section" "tcp_server" "1"
 	if [ "$ipv6_server" = "1" ]; then
 		conf_append "bind" "[::]:$port"
 	else
 		conf_append "bind" ":$port"
 	fi
 
-	if [ "$tcp_server" = "1" ]; then
+	[ "$tcp_server" = "1" ] && {
 		if [ "$ipv6_server" = "1" ]; then
 			conf_append "bind-tcp" "[::]:$port"
 		else
 			conf_append "bind-tcp" ":$port"
 		fi
-	fi
+	}
-	config_get "dualstack_ip_selection" "$section" "dualstack_ip_selection" "0"
+	config_get dualstack_ip_selection "$section" "dualstack_ip_selection" "0"
-	if [ "$dualstack_ip_selection" = "1" ]; then
+	[ "$dualstack_ip_selection" = "1" ] && conf_append "dualstack-ip-selection" "yes"
-		conf_append "dualstack-ip-selection" "yes"
-	fi
 
-	config_get "prefetch_domain" "$section" "prefetch_domain" "0"
+	config_get prefetch_domain "$section" "prefetch_domain" "0"
-	if [ "$prefetch_domain" = "1" ]; then
+	[ "$prefetch_domain" = "1" ] && conf_append "prefetch-domain" "yes"
-		conf_append "prefetch-domain" "yes"
+
-	fi
+	config_get serve_expired "$section" "serve_expired" "0"
+	[ "$serve_expired" = "1" ] && conf_append "serve-expired" "yes"
 
 	SMARTDNS_PORT="$port"
 
-	config_get "cache_size" "$section" "cache_size" ""
+	config_get cache_size "$section" "cache_size" ""
-	if [ ! -z "$cache_size" ]; then
+	[ -z "$cache_size" ] || conf_append "cache-size" "$cache_size"
-		conf_append "cache-size" "$cache_size"
-	fi
 
-	config_get "rr_ttl" "$section" "rr_ttl" ""
+	config_get rr_ttl "$section" "rr_ttl" ""
-	if [ ! -z "$rr_ttl" ]; then
+	[ -z "$rr_ttl" ] || conf_append "rr-ttl" "$rr_ttl"
-		conf_append "rr-ttl" "$rr_ttl"
-	fi
 
-	config_get "rr_ttl_min" "$section" "rr_ttl_min" ""
+	config_get rr_ttl_min "$section" "rr_ttl_min" ""
-	if [ ! -z "$rr_ttl_min" ]; then
+	[ -z "$rr_ttl_min" ] || conf_append "rr-ttl-min" "$rr_ttl_min"
-		conf_append "rr-ttl-min" "$rr_ttl_min"
-	fi
 
-	config_get "rr_ttl_max" "$section" "rr_ttl_max" ""
+	config_get rr_ttl_max "$section" "rr_ttl_max" ""
-	if [ ! -z "$rr_ttl_max" ]; then
+	[ -z "$rr_ttl_max" ] || conf_append "rr-ttl-max" "$rr_ttl_max"
-		conf_append "rr-ttl-max" "$rr_ttl_max"
-	fi
 
-	config_get "log_size" "$section" "log_size" "64K"
+	config_get log_size "$section" "log_size" "64K"
-	if [ ! -z "$log_size" ]; then
+	[ -z "$log_size" ] || conf_append "log-size" "$log_size"
-		conf_append "log-size" "$log_size"
-	fi
 
-	config_get "log_num" "$section" "log_num" "1"
+	config_get log_num "$section" "log_num" "1"
-	if [ ! -z "$log_num" ]; then
+	[ -z "$log_num" ] || conf_append "log-num" "$log_num"
-		conf_append "log-num" "$log_num"
-	fi
 
-	config_get "log_level" "$section" "log_level" "error"
+	config_get log_level "$section" "log_level" "error"
-	if [ ! -z "$log_level" ]; then
+	[ -z "$log_level" ]|| conf_append "log-level" "$log_level"
-		conf_append "log-level" "$log_level"
-	fi
 
-	config_get "log_file" "$section" "log_file" ""
+	config_get log_file "$section" "log_file" ""
-	if [ ! -z "$log_file" ]; then
+	[ -z "$log_file" ] || conf_append "log-file" "$log_file"
-		conf_append "log-file" "$log_file"
-	fi
 
-	config_get "redirect" "$section" "redirect" "none"
+	config_get redirect "$section" "redirect" "none"
-	config_get "old_redirect" "$section" "old_redirect" "none"
+	config_get old_redirect "$section" "old_redirect" "none"
-	config_get "old_port" "$section" "old_port" "0"
+	config_get old_port "$section" "old_port" "0"
-	config_get "old_enabled" "$section" "old_enabled" "0"
+	config_get old_enabled "$section" "old_enabled" "0"
 
 	if [ "$old_redirect" != "$redirect" ] || [ "$old_port" != "$SMARTDNS_PORT" ] || [ "$old_enabled" = "1" -a "$enabled" = "0" ]; then
-		if [ "$old_redirect" != "none" ]; then
+		[ "$old_redirect" = "none" ] || {
-			if [ "$old_port" != "0" ]; then
+			[ "$old_port" = "0" ] || clear_iptable "$old_port" "$ipv6_server"
-				clear_iptable "$old_port" "$ipv6_server"
+			[ "$old_redirect" = "dnsmasq-upstream" ] && stop_forward_dnsmasq "$old_port"
-			fi
+		}
-			if [ "$old_redirect" == "dnsmasq-upstream" ]; then
-				stop_forward_dnsmasq "$old_port"
-			fi
-		fi
 	fi
-	
+
 	uci delete smartdns.@smartdns[0].old_redirect 2>/dev/null
 	uci delete smartdns.@smartdns[0].old_port 2>/dev/null
 	uci delete smartdns.@smartdns[0].old_enabled 2>/dev/null
@@ -313,33 +351,40 @@ load_service() {
 		set_forward_dnsmasq "$SMARTDNS_PORT"
 	fi
 
+	load_second_server $section
+
 	config_foreach load_server "server"
 
-	echo "conf-file $ADDRESS_CONF" >> $SMARTDNS_CONF_TMP
+	{
-	echo "conf-file $BLACKLIST_IP_CONF" >> $SMARTDNS_CONF_TMP
+		echo "conf-file $ADDRESS_CONF"
-	echo "conf-file $CUSTOM_CONF" >> $SMARTDNS_CONF_TMP
+		echo "conf-file $BLACKLIST_IP_CONF"
+		echo "conf-file $CUSTOM_CONF"
+	} >> $SMARTDNS_CONF_TMP
 	mv $SMARTDNS_CONF_TMP $SMARTDNS_CONF
 
 	procd_open_instance "smartdns"
-	if [ "$COREDUMP" = "1" ]; then
+	[ "$COREDUMP" = "1" ] && {
 		args="$args -S"
 		procd_set_param limits core="unlimited"
-	fi
+	}
-	
+
+	get_tz
+	[ -z "$SET_TZ" ] || procd_set_param env TZ="$SET_TZ"
+
 	procd_set_param command /usr/sbin/smartdns -f -c $SMARTDNS_CONF $args
-	if [ "$RESPAWN" = "1" ]; then
+	[ "$RESPAWN" = "1" ] &&	procd_set_param respawn ${respawn_threshold:-3600} ${respawn_timeout:-5} ${respawn_retry:-5}
-		procd_set_param respawn ${respawn_threshold:-3600} ${respawn_timeout:-5} ${respawn_retry:-5}
-	fi
 	procd_set_param file "$SMARTDNS_CONF"
 	procd_close_instance
 }
 
-start_service() {
+start_service()
+{
 	config_load "smartdns"
 	config_foreach load_service "smartdns"
 }
 
-reload_service(){
+reload_service()
+{
 	stop
 	start
 }

package/openwrt/make.sh

@@ -1,5 +1,19 @@
-#/bin/sh
+#!/bin/sh
-
+#
+# Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+#
+# smartdns is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# smartdns is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
 CURR_DIR=$(cd $(dirname $0);pwd)
 
 VER="`date +"1.%Y.%m.%d-%H%M"`"
@@ -16,52 +30,57 @@ showhelp()
 	echo "Options:"
 	echo " -o               output directory."
 	echo " --arch           archtecture."
-    echo " --ver            version."
+	echo " --ver            version."
 	echo " -h               show this message."
 }
 
 build()
 {
-    ROOT=/tmp/smartdns-openwrt
+	ROOT=/tmp/smartdns-openwrt
-    rm -fr $ROOT
+	rm -fr $ROOT
 
-    mkdir -p $ROOT
+	mkdir -p $ROOT
-    cp $CURR_DIR/* $ROOT/ -af
+	cp $CURR_DIR/* $ROOT/ -af
-    cd $ROOT/
+	cd $ROOT/
-    mkdir $ROOT/root/usr/sbin -p
+	mkdir $ROOT/root/usr/sbin -p
-    mkdir $ROOT/root/etc/init.d -p
+	mkdir $ROOT/root/etc/init.d -p
-    mkdir $ROOT/root/etc/smartdns/ -p
+	mkdir $ROOT/root/etc/smartdns/ -p
 
-    cp $SMARTDNS_CONF  $ROOT/root/etc/smartdns/
+	cp $SMARTDNS_CONF  $ROOT/root/etc/smartdns/
-    cp $ADDRESS_CONF $ROOT/root/etc/smartdns/
+	cp $ADDRESS_CONF $ROOT/root/etc/smartdns/
-    cp $BLACKLIST_IP_CONF $ROOT/root/etc/smartdns/
+	cp $BLACKLIST_IP_CONF $ROOT/root/etc/smartdns/
-    cp $CUSTOM_CONF $ROOT/root/etc/smartdns/
+	cp $CUSTOM_CONF $ROOT/root/etc/smartdns/
-    cp $CURR_DIR/files/etc $ROOT/root/ -af
+	cp $CURR_DIR/files/etc $ROOT/root/ -af
-    cp $SMARTDNS_BIN $ROOT/root/usr/sbin
+	cp $SMARTDNS_BIN $ROOT/root/usr/sbin
+	if [ $? -ne 0 ]; then
+		echo "copy smartdns file failed."
+		rm -fr $ROOT/
+		return 1
+	fi
 
-    chmod +x $ROOT/root/etc/init.d/smartdns
+	chmod +x $ROOT/root/etc/init.d/smartdns
-    INST_SIZE="`du -sb $ROOT/root/ | awk '{print $1}'`"
+	INST_SIZE="`du -sb $ROOT/root/ | awk '{print $1}'`"
 
-    sed -i "s/^Architecture.*/Architecture: $ARCH/g" $ROOT/control/control
+	sed -i "s/^Architecture.*/Architecture: $ARCH/g" $ROOT/control/control
-    sed -i "s/Version:.*/Version: $VER/" $ROOT/control/control
+	sed -i "s/Version:.*/Version: $VER/" $ROOT/control/control
-    sed -i "s/^\(bind .*\):53/\1:6053/g" $ROOT/root/etc/smartdns/smartdns.conf
+	sed -i "s/^\(bind .*\):53/\1:6053/g" $ROOT/root/etc/smartdns/smartdns.conf
-    if [ ! -z "$INST_SIZE" ]; then
+	if [ ! -z "$INST_SIZE" ]; then
-        echo "Installed-Size: $INST_SIZE" >> $ROOT/control/control
+		echo "Installed-Size: $INST_SIZE" >> $ROOT/control/control
-    fi
+	fi
 
-    cd $ROOT/control
+	cd $ROOT/control
-    chmod +x *
+	chmod +x *
-    tar zcf ../control.tar.gz --owner=0 --group=0 ./
+	tar zcf ../control.tar.gz --owner=0 --group=0 ./
-    cd $ROOT
+	cd $ROOT
 
-    tar zcf $ROOT/data.tar.gz -C root --owner=0 --group=0 .
+	tar zcf $ROOT/data.tar.gz -C root --owner=0 --group=0 .
-    tar zcf $OUTPUTDIR/smartdns.$VER.$ARCH.ipk --owner=0 --group=0 control.tar.gz data.tar.gz debian-binary
+	tar zcf $OUTPUTDIR/smartdns.$VER.$FILEARCH.ipk --owner=0 --group=0 control.tar.gz data.tar.gz debian-binary
-    rm -fr $ROOT/
+	rm -fr $ROOT/
 }
 
 main()
 {
-	OPTS=`getopt -o o:h --long arch:,ver: \
+	OPTS=`getopt -o o:h --long arch:,ver:,filearch: \
 		-n  "" -- "$@"`
 
 	if [ $? != 0 ] ; then echo "Terminating..." >&2 ; exit 1 ; fi
@@ -74,31 +93,38 @@ main()
 		--arch)
 			ARCH="$2"
 			shift 2;;
-        --ver)
+		--filearch)
-            VER="$2"
+			FILEARCH="$2"
-            shift 2;;
+			shift 2;;
+		--ver)
+			VER="$2"
+			shift 2;;
 		-o )
 			OUTPUTDIR="$2"
 			shift 2;;
-        -h | --help )
+		-h | --help )
 			showhelp
 			return 0
 			shift ;;
 		-- ) shift; break ;;
 		* ) break ;;
-  		esac
+		esac
 	done
 
-    if [ -z "$ARCH" ]; then
+	if [ -z "$ARCH" ]; then
-        echo "please input arch."
+		echo "please input arch."
-        return 1;
+		return 1;
-    fi
+	fi
 
-    if [ -z "$OUTPUTDIR" ]; then
+	if [ -z "$FILEARCH" ]; then
-        OUTPUTDIR=$CURR_DIR;
+		FILEARCH=$ARCH
-    fi
+	fi
 
-    build
+	if [ -z "$OUTPUTDIR" ]; then
+		OUTPUTDIR=$CURR_DIR;
+	fi
+
+	build
 }
 
 main $@

package/optware/S50smartdns

@@ -1,9 +1,24 @@
-#! /bin/sh
+#!/bin/sh
+#
+# Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+#
+# smartdns is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# smartdns is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 SMARTDNS_BIN=/opt/usr/sbin/smartdns
 SMARTDNS_CONF=/opt/etc/smartdns/smartdns.conf
-DNSMASQ_CONF=/etc/dnsmasq.conf
+DNSMASQ_CONF="/etc/dnsmasq.conf /var/etc/dnsmasq.conf /etc/storage/dnsmasq/dnsmasq.conf"
-SMARTDNS_PID="/var/run/smartdns.pid"
+SMARTDNS_PID=/var/run/smartdns.pid
 SMARTDNS_PORT=535
 SMARTDNS_OPT=/opt/etc/smartdns/smartdns-opt.conf
 # workmode 
@@ -28,123 +43,184 @@ set_iptable()
 		redirect_tcp=1;
 	fi
 
-	IPS="`ifconfig | grep "inet addr" | grep -v ":127" | grep "Bcast" | awk '{print $2}' | awk -F: '{print $2}'`"
+	IPS="$(ifconfig | grep "inet addr" | grep -v ":127" | grep "Bcast" | awk '{print $2}' | awk -F: '{print $2}')"
 	for IP in $IPS
 	do
 		if [ $redirect_tcp -eq 1 ]; then
-			iptables -t nat -A PREROUTING -p tcp -d $IP --dport 53 -j REDIRECT --to-ports $SMARTDNS_PORT > /dev/null 2>&1
+			iptables -t nat -A PREROUTING -p tcp -d "$IP" --dport 53 -j REDIRECT --to-ports "$SMARTDNS_PORT" > /dev/null 2>&1
 		fi
-		iptables -t nat -A PREROUTING -p udp -d $IP --dport 53 -j REDIRECT --to-ports $SMARTDNS_PORT > /dev/null 2>&1
+		iptables -t nat -A PREROUTING -p udp -d "$IP" --dport 53 -j REDIRECT --to-ports "$SMARTDNS_PORT" > /dev/null 2>&1
 	done
 
 }
 
 clear_iptable()
 {
-	IPS="`ifconfig | grep "inet addr" | grep -v ":127" | grep "Bcast" | awk '{print $2}' | awk -F: '{print $2}'`"
+	IPS="$(ifconfig | grep "inet addr" | grep -v ":127" | grep "Bcast" | awk '{print $2}' | awk -F: '{print $2}')"
 	for IP in $IPS
 	do
-		iptables -t nat -D PREROUTING -p tcp -d $IP --dport 53 -j REDIRECT --to-ports $SMARTDNS_PORT > /dev/null 2>&1
+		iptables -t nat -D PREROUTING -p tcp -d "$IP" --dport 53 -j REDIRECT --to-ports "$SMARTDNS_PORT" > /dev/null 2>&1
-		iptables -t nat -D PREROUTING -p udp -d $IP --dport 53 -j REDIRECT --to-ports $SMARTDNS_PORT > /dev/null 2>&1
+		iptables -t nat -D PREROUTING -p udp -d "$IP" --dport 53 -j REDIRECT --to-ports "$SMARTDNS_PORT" > /dev/null 2>&1
 	done
 	
 }
 
-restart_dnsmasq()
+get_dnsmasq_cmd()
 {
-	CMD="`ps | grep "  dnsmasq" | grep -v grep 2>/dev/null`"
+	CMD="$(ps 2>/dev/null | grep -e '[a-zA-Z]\{0,2\} \{1,\}dnsmasq' | grep -v grep 2>/dev/null)"
-	if [ -z "$CMD" ]; then
+	if [ ! -z "$CMD" ]; then
-		CMD="`ps ax | grep dnsmasq | grep -v grep 2>/dev/null`"
+		return
 	fi
 
+	CMD="$(ps 2>/dev/null | grep '/usr/sbin/dnsmasq' | grep -v grep 2>/dev/null)"
+	if [ ! -z "$CMD" ]; then
+		return
+	fi
+
+	CMD="$(ps 2>/dev/null | grep 'dnsmasq' | grep -v grep 2>/dev/null)"
+	if [ ! -z "$CMD" ]; then
+		return
+	fi
+
+	CMD="$(ps ax 2>/dev/null | grep -e '[a-zA-Z]\{0,2\} \{1,\}dnsmasq' | grep -v grep 2>/dev/null)"
+	if [ ! -z "$CMD" ]; then
+		return
+	fi
+
+	CMD="$(ps ax 2>/dev/null | grep /usr/sbin/dnsmasq | grep -v grep 2>/dev/null)"
+	if [ ! -z "$CMD" ]; then
+		return
+	fi
+
+	CMD="$(ps ax 2>/dev/null | grep 'dnsmasq' | grep -v grep 2>/dev/null)"
+	if [ ! -z "$CMD" ]; then
+		return
+	fi	
+}
+
+restart_dnsmasq()
+{
+	local CMD=""
+
+	get_dnsmasq_cmd
 	if [ -z "$CMD" ]; then
 		echo "cannot find dnsmasq"
 		return 1
 	fi
 
-	PID=`echo "$CMD" | awk '{print $1}'`
+	PID="$(echo "$CMD" | awk '{print $1}')"
 	if [ ! -d "/proc/$PID" ]; then
 		echo "dnsmasq is not running"
 		return 1
 	fi
 
-	kill -9 $PID
+	kill -9 "$PID"
 
-	DNSMASQ_CMD="`echo $CMD | awk '{for(i=5; i<=NF;i++)printf \$i " "}'`"
+	DNSMASQ_CMD="$(echo "$CMD" | awk '{for(i=5; i<=NF;i++)printf $i " "}')"
 
 	$DNSMASQ_CMD
 }
 
 get_server_ip()
 {
-	IPS="`ifconfig | grep "inet addr" | grep -v ":127" | grep "Bcast" | awk '{print $2}' | awk -F: '{print $2}'`"
+	CONF_FILE=$1
-	LOCAL_SERVER_IP=""
+	IPS="$(ifconfig | grep "inet addr" | grep -v ":127" | grep "Bcast" | awk '{print $2}' | awk -F: '{print $2}')"
 	for IP in $IPS
 	do
 		N=3
 		while [ $N -gt 0 ]
 		do
-			ADDR=`echo $IP | awk -F. "{for(i=1;i<=$N;i++)printf \\$i\".\"}"`
+			ADDR="$(echo "$IP" | awk -F. "{for(i=1;i<="$N";i++)printf \$i\".\"}")"
-			grep "dhcp-range=" $DNSMASQ_CONF | grep $ADDR >/dev/null 2>&1
+			grep "dhcp-range=" "$CONF_FILE" | grep "$ADDR" >/dev/null 2>&1
 			if [ $? -eq 0 ]; then
-					SERVER_TAG="`grep "^dhcp-range *=" $DNSMASQ_CONF | grep $ADDR | awk -F= '{print $2}' | awk -F, '{print $1}'`"
+					SERVER_TAG="$(grep "^dhcp-range *=" "$CONF_FILE" | grep "$ADDR" | awk -F= '{print $2}' | awk -F, '{print $1}')"
 					LOCAL_SERVER_IP="$IP"
-					return 0
+					return 1
 			fi
-			N="`expr $N - 1`"
+			N=$((N-1))
 		done
 	done
 
 	return 1
 }
 
-set_dnsmasq()
+set_dnsmasq_conf()
 {
-	local RESTART_DNSMASQ=0
 	local LOCAL_SERVER_IP=""
 	local SERVER_TAG=""
-	get_server_ip
+	local CONF_FILE=$1
+
+	get_server_ip $CONF_FILE
+
 	if [ "$LOCAL_SERVER_IP" ] && [ "$SERVER_TAG" ]; then
-		grep "dhcp-option *=" $DNSMASQ_CONF | grep "$SERVER_TAG,6,$LOCAL_SERVER_IP" > /dev/null 2>&1
+		grep "dhcp-option *=" "$CONF_FILE" | grep "$SERVER_TAG,6,$LOCAL_SERVER_IP" > /dev/null 2>&1
 		if [ $? -ne 0 ]; then
-			sed -i "/^dhcp-option *=$SERVER_TAG,6,/d" $DNSMASQ_CONF
+			sed -i "/^dhcp-option *=$SERVER_TAG,6,/d" "$CONF_FILE"
-			echo "dhcp-option=$SERVER_TAG,6,$LOCAL_SERVER_IP" >> $DNSMASQ_CONF
+			echo "dhcp-option=$SERVER_TAG,6,$LOCAL_SERVER_IP" >> "$CONF_FILE"
 			RESTART_DNSMASQ=1
 		fi
 	fi
 
-	grep "^port *=0" $DNSMASQ_CONF > /dev/null 2>&1
+	grep "^port *=0" "$CONF_FILE" > /dev/null 2>&1
 	if [ $? -ne 0 ]; then
-		sed -i "/^port *=/d" $DNSMASQ_CONF
+		sed -i "/^port *=/d" "$CONF_FILE"
-		echo "port=0" >> $DNSMASQ_CONF
+		echo "port=0" >> "$CONF_FILE"
 		RESTART_DNSMASQ=1
 	fi
+}
 
+set_dnsmasq()
+{
+	local RESTART_DNSMASQ=0
+
+	for conf in $DNSMASQ_CONF
+	do
+		if [ ! -e "$conf" ]; then
+			continue
+		fi
+
+		set_dnsmasq_conf "$conf"
+	done
+	
 	if [ $RESTART_DNSMASQ -ne 0 ]; then
 		restart_dnsmasq	
 	fi
+}
 
+clear_dnsmasq_conf()
+{
+	local LOCAL_SERVER_IP=""
+	local SERVER_TAG=""
+	local CONF_FILE=$1
+	
+	get_server_ip "$CONF_FILE"
+	if [ "$LOCAL_SERVER_IP" ] && [ "$SERVER_TAG" ]; then
+		grep "dhcp-option *=" "$CONF_FILE" | grep "$SERVER_TAG,6,$LOCAL_SERVER_IP" > /dev/null 2>&1
+		if [ $? -eq 0 ]; then
+			sed -i "/^dhcp-option *=$SERVER_TAG,6,/d" "$CONF_FILE"
+			RESTART_DNSMASQ=1
+		fi
+	fi
+
+	grep "^port *=" "$CONF_FILE" > /dev/null 2>&1
+	if [ $? -eq 0 ]; then
+		sed -i "/^port *=/d" "$CONF_FILE"
+		RESTART_DNSMASQ=1
+	fi
 }
 
 clear_dnsmasq()
 {
 	local RESTART_DNSMASQ=0
-	local LOCAL_SERVER_IP=""
-	local SERVER_TAG=""
-	get_server_ip
-	if [ "$LOCAL_SERVER_IP" ] && [ "$SERVER_TAG" ]; then
-		grep "dhcp-option *=" $DNSMASQ_CONF | grep "$SERVER_TAG,6,$LOCAL_SERVER_IP" > /dev/null 2>&1
-		if [ $? -eq 0 ]; then
-			sed -i "/^dhcp-option *=$SERVER_TAG,6,/d" $DNSMASQ_CONF
-			RESTART_DNSMASQ=1
-		fi
-	fi
 
-	grep "^port *=" $DNSMASQ_CONF > /dev/null 2>&1
+	for conf in $DNSMASQ_CONF
-	if [ $? -eq 0 ]; then
+	do
-		sed -i "/^port *=/d" $DNSMASQ_CONF
+		if [ ! -e "$conf" ]; then
-		RESTART_DNSMASQ=1
+			continue
-	fi
+		fi
+
+		clear_dnsmasq_conf "$conf"
+	done
 
 	if [ $RESTART_DNSMASQ -ne 0 ]; then
 		restart_dnsmasq	
@@ -156,11 +232,11 @@ set_smartdns_port()
 	if [ "$SMARTDNS_WORKMODE" = "0" ]; then
 		return 0
 	elif [ "$SMARTDNS_WORKMODE" = "1" ]; then
-		sed -i "s/^\(bind .*\):53 *\(.*\)\$/\1:$SMARTDNS_PORT \2/g" $SMARTDNS_CONF
+		sed -i "s/^\\(bind .*\\):53 *\\(.*\\)\$/\\1:$SMARTDNS_PORT \\2/g" $SMARTDNS_CONF
-    	sed -i "s/^\(bind-tcp .*\):53 *\(.*\)\$/\1:$SMARTDNS_PORT \2/g" $SMARTDNS_CONF
+		sed -i "s/^\\(bind-tcp .*\\):53 *\\(.*\\)\$/\\1:$SMARTDNS_PORT \\2/g" $SMARTDNS_CONF
 	elif [ "$SMARTDNS_WORKMODE" = "2" ]; then
-		sed -i "s/^\(bind .*\):$SMARTDNS_PORT *\(.*\)\$/\1:53 \2/g" $SMARTDNS_CONF
+		sed -i "s/^\\(bind .*\\):$SMARTDNS_PORT *\\(.*\\)\$/\\1:53 \\2/g" $SMARTDNS_CONF
-    	sed -i "s/^\(bind-tcp .*\):$SMARTDNS_PORT *\(.*\)\$/\1:53 \2/g" $SMARTDNS_CONF
+		sed -i "s/^\\(bind-tcp .*\\):$SMARTDNS_PORT *\\(.*\\)\$/\\1:53 \\2/g" $SMARTDNS_CONF
 	else
 		return 1
 	fi	
@@ -198,6 +274,28 @@ clear_rule()
 	fi
 }
 
+get_tz()
+{
+	if [ -e "/etc/localtime" ]; then
+		return 
+	fi
+	
+	for tzfile in /etc/TZ /var/etc/TZ
+	do
+		if [ ! -e "$tzfile" ]; then
+			continue
+		fi
+		
+		tz="$(cat $tzfile 2>/dev/null)"
+	done
+	
+	if [ -z "$tz" ]; then
+		return	
+	fi
+	
+	export TZ=$tz
+}
+
 case "$1" in
 	start)
 	set_rule
@@ -206,13 +304,14 @@ case "$1" in
 	fi
 
 	set_smartdns_port
+	get_tz
 	$SMARTDNS_BIN -c $SMARTDNS_CONF -p $SMARTDNS_PID
 	if [ $? -ne 0 ]; then
 		clear_rule
 	fi
 	;;
 	status)
-	pid="`cat $SMARTDNS_PID |head -n 1 2>/dev/null`"
+	pid="$(cat $SMARTDNS_PID |head -n 1 2>/dev/null)"
 	if [ -z "$pid" ]; then
 		echo "smartdns not running."
 		return 0
@@ -227,7 +326,7 @@ case "$1" in
 	;;
 	stop)
 	clear_rule
-	pid="`cat $SMARTDNS_PID | head -n 1 2>/dev/null`"
+	pid="$(cat "$SMARTDNS_PID" | head -n 1 2>/dev/null)"
 	if [ -z "$pid" ]; then
 		echo "smartdns not running."
 		return 0
@@ -237,7 +336,7 @@ case "$1" in
 		return 0;
 	fi
 
-	kill -9 $pid 2>/dev/null
+	kill -9 "$pid" 2>/dev/null
 	;;
 	restart)
 	$0 stop

package/optware/control/postinst

@@ -1,4 +1,19 @@
-#! /bin/sh
+#!/bin/sh
+#
+# Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+#
+# smartdns is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# smartdns is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 chmod +x /opt/usr/sbin/smartdns
 chmod +x /opt/etc/init.d/S50smartdns

package/optware/control/prerm

@@ -1,3 +1,18 @@
-#! /bin/sh
+#!/bin/sh
+#
+# Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+#
+# smartdns is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# smartdns is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 /opt/etc/init.d/S50smartdns stop

package/optware/make.sh

@@ -1,5 +1,19 @@
-#/bin/sh
+#!/bin/sh
-
+#
+# Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+#
+# smartdns is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# smartdns is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
 CURR_DIR=$(cd $(dirname $0);pwd)
 VER="`date +"1.%Y.%m.%d-%H%M"`"
 SMARTDNS_DIR=$CURR_DIR/../../
@@ -13,44 +27,49 @@ showhelp()
 	echo "Options:"
 	echo " -o               output directory."
 	echo " --arch           archtecture."
-    echo " --ver            version."
+	echo " --ver            version."
 	echo " -h               show this message."
 }
 
 build()
 {
-    ROOT=/tmp/smartdns-optware
+	ROOT=/tmp/smartdns-optware
-    rm -fr $ROOT
+	rm -fr $ROOT
 
-    mkdir -p $ROOT
+	mkdir -p $ROOT
-    cp $CURR_DIR/* $ROOT/ -af
+	cp $CURR_DIR/* $ROOT/ -af
-    cd $ROOT/
+	cd $ROOT/
-    mkdir $ROOT/opt/usr/sbin -p
+	mkdir $ROOT/opt/usr/sbin -p
-    mkdir $ROOT/opt/etc/init.d -p
+	mkdir $ROOT/opt/etc/init.d -p
-    mkdir $ROOT/opt/etc/smartdns/ -p
+	mkdir $ROOT/opt/etc/smartdns/ -p
 
-    cp $SMARTDNS_CONF  $ROOT/opt/etc/smartdns/
+	cp $SMARTDNS_CONF  $ROOT/opt/etc/smartdns/
-    cp $SMARTDNS_OPT $ROOT/opt/etc/smartdns/
+	cp $SMARTDNS_OPT $ROOT/opt/etc/smartdns/
-    cp $CURR_DIR/S50smartdns $ROOT/opt/etc/init.d/
+	cp $CURR_DIR/S50smartdns $ROOT/opt/etc/init.d/
-    cp $SMARTDNS_BIN $ROOT/opt/usr/sbin
+	cp $SMARTDNS_BIN $ROOT/opt/usr/sbin
+	if [ $? -ne 0 ]; then
+		echo "copy smartdns file failed."
+		rm -fr $ROOT/
+		return 1
+	fi
 
-    sed -i "s/# *server-name smartdns/server-name smartdns/g" $ROOT/opt/etc/smartdns/smartdns.conf
+	sed -i "s/# *server-name smartdns/server-name smartdns/g" $ROOT/opt/etc/smartdns/smartdns.conf
-    sed -i "s/^Architecture.*/Architecture: $ARCH/g" $ROOT/control/control
+	sed -i "s/^Architecture.*/Architecture: $ARCH/g" $ROOT/control/control
-    sed -i "s/Version:.*/Version: $VER/" $ROOT/control/control
+	sed -i "s/Version:.*/Version: $VER/" $ROOT/control/control
 
-    cd $ROOT/control
+	cd $ROOT/control
-    chmod +x *
+	chmod +x *
-    tar zcf ../control.tar.gz --owner=0 --group=0 ./ 
+	tar zcf ../control.tar.gz --owner=0 --group=0 ./ 
-    cd $ROOT
+	cd $ROOT
 
-    tar zcf data.tar.gz --owner=0 --group=0 opt
+	tar zcf data.tar.gz --owner=0 --group=0 opt
-    tar zcf $OUTPUTDIR/smartdns.$VER.$ARCH.ipk --owner=0 --group=0 control.tar.gz data.tar.gz debian-binary
+	tar zcf $OUTPUTDIR/smartdns.$VER.$FILEARCH.ipk --owner=0 --group=0 control.tar.gz data.tar.gz debian-binary
-    rm -fr $ROOT/
+	rm -fr $ROOT/
 }
 
 main()
 {
-	OPTS=`getopt -o o:h --long arch:,ver: \
+	OPTS=`getopt -o o:h --long arch:,ver:,filearch: \
 		-n  "" -- "$@"`
 
 	if [ $? != 0 ] ; then echo "Terminating..." >&2 ; exit 1 ; fi
@@ -63,31 +82,38 @@ main()
 		--arch)
 			ARCH="$2"
 			shift 2;;
-        --ver)
+		--filearch)
-            VER="$2"
+			FILEARCH="$2"
-            shift 2;;
+			shift 2;;
+		--ver)
+			VER="$2"
+			shift 2;;
 		-o )
 			OUTPUTDIR="$2"
 			shift 2;;
-        -h | --help )
+		-h | --help )
 			showhelp
 			return 0
 			shift ;;
 		-- ) shift; break ;;
 		* ) break ;;
-  		esac
+		esac
 	done
 
-    if [ -z "$ARCH" ]; then
+	if [ -z "$ARCH" ]; then
-        echo "please input arch."
+		echo "please input arch."
-        return 1;
+		return 1;
-    fi
+	fi
 
-    if [ -z "$OUTPUTDIR" ]; then
+	if [ -z "$FILEARCH" ]; then
-        OUTPUTDIR=$CURR_DIR;
+		FILEARCH=$ARCH
-    fi
+	fi
 
-    build
+	if [ -z "$OUTPUTDIR" ]; then
+		OUTPUTDIR=$CURR_DIR;
+	fi
+
+	build
 }
 
 main $@

src/Makefile

@@ -1,20 +1,49 @@
-
+
-BIN=smartdns 
+# Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
-OBJS_LIB=lib/rbtree.o lib/art.o lib/bitops.o lib/radix.o lib/conf.o
+#
-OBJS=smartdns.o fast_ping.o dns_client.o dns_server.o dns.o util.o tlog.o dns_conf.o dns_cache.o http_parse.o $(OBJS_LIB)
+# smartdns is free software: you can redistribute it and/or modify
-CFLAGS +=-O2 -g -Wall -Wstrict-prototypes -fno-omit-frame-pointer -Wstrict-aliasing 
+# it under the terms of the GNU General Public License as published by
-CFLAGS +=-Iinclude
+# the Free Software Foundation, either version 3 of the License, or
-CFLAGS += -DBASE_FILE_NAME=\"$(notdir $<)\"
+# (at your option) any later version.
-CXXFLAGS=-O2 -g -Wall -std=c++11 
+#
-CXXFLAGS +=-Iinclude
+# smartdns is distributed in the hope that it will be useful,
-LDFLAGS += -lpthread -lssl -lcrypto
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
-
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-.PHONY: all
+# GNU General Public License for more details.
-
+#
-all: $(BIN)
+# You should have received a copy of the GNU General Public License
- 
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-$(BIN) : $(OBJS)
+
-	$(CC) $(OBJS) -o $@ $(LDFLAGS)
+BIN=smartdns 
-
+OBJS_LIB=lib/rbtree.o lib/art.o lib/bitops.o lib/radix.o lib/conf.o
-clean:
+OBJS=smartdns.o fast_ping.o dns_client.o dns_server.o dns.o util.o tlog.o dns_conf.o dns_cache.o http_parse.o $(OBJS_LIB)
-	$(RM) $(OBJS) $(BIN)
+
+# cflags
+ifndef CFLAGS
+CFLAGS =-O2 -g -Wall -Wstrict-prototypes -fno-omit-frame-pointer -Wstrict-aliasing 
+endif
+override CFLAGS +=-Iinclude
+override CFLAGS += -DBASE_FILE_NAME=\"$(notdir $<)\"
+ifdef VER
+override CFLAGS += -DSMARTDNS_VERION=\"$(VER)\"
+endif
+
+CXXFLAGS=-O2 -g -Wall -std=c++11 
+override CXXFLAGS +=-Iinclude
+
+# ldflags
+ifeq ($(STATIC), yes)
+override LDFLAGS += -lssl -lcrypto -Wl,--whole-archive -lpthread -Wl,--no-whole-archive -ldl -static
+else
+override LDFLAGS += -lssl -lcrypto -lpthread 
+endif
+
+.PHONY: all clean
+
+all: $(BIN)
+ 
+$(BIN) : $(OBJS)
+	$(CC) $(OBJS) -o $@ $(LDFLAGS)
+
+clean:
+	$(RM) $(OBJS) $(BIN)

src/dns.h

@@ -1,3 +1,21 @@
+/*************************************************************************
+ *
+ * Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+ *
+ * smartdns is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * smartdns is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #ifndef _DNS_HEAD_H
 #define _DNS_HEAD_H
 
@@ -26,7 +44,10 @@ typedef enum dns_rr_type {
 	DNS_RRS_END,
 } dns_rr_type;
 
-typedef enum dns_class { DNS_C_IN = 1, DNS_C_ANY = 255 } dns_class_t;
+typedef enum dns_class {
+	DNS_C_IN = 1, // DNS C IN
+	DNS_C_ANY = 255
+} dns_class_t;
 
 typedef enum dns_type {
 	DNS_T_A = 1,
@@ -45,10 +66,10 @@ typedef enum dns_type {
 	DNS_T_ALL = 255
 } dns_type_t;
 
-typedef enum dns_opt_code { 
+typedef enum dns_opt_code {
-	DNS_OPT_T_ECS = 8, 
+	DNS_OPT_T_ECS = 8, // OPT ECS
 	DNS_OPT_T_TCP_KEEPALIVE = 11,
-	DNS_OPT_T_ALL = 255 
+	DNS_OPT_T_ALL = 255
 } dns_opt_code_t;
 
 typedef enum dns_opcode {
@@ -178,7 +199,8 @@ int dns_get_A(struct dns_rrs *rrs, char *domain, int maxsize, int *ttl, unsigned
 int dns_add_PTR(struct dns_packet *packet, dns_rr_type type, char *domain, int ttl, char *cname);
 int dns_get_PTR(struct dns_rrs *rrs, char *domain, int maxsize, int *ttl, char *cname, int cname_size);
 
-int dns_add_AAAA(struct dns_packet *packet, dns_rr_type type, char *domain, int ttl, unsigned char addr[DNS_RR_AAAA_LEN]);
+int dns_add_AAAA(struct dns_packet *packet, dns_rr_type type, char *domain, int ttl,
+				 unsigned char addr[DNS_RR_AAAA_LEN]);
 int dns_get_AAAA(struct dns_rrs *rrs, char *domain, int maxsize, int *ttl, unsigned char addr[DNS_RR_AAAA_LEN]);
 
 int dns_add_SOA(struct dns_packet *packet, dns_rr_type type, char *domain, int ttl, struct dns_soa *soa);
@@ -194,7 +216,8 @@ int dns_add_OPT_ECS(struct dns_packet *packet, struct dns_opt_ecs *ecs);
 int dns_get_OPT_ECS(struct dns_rrs *rrs, unsigned short *opt_code, unsigned short *opt_len, struct dns_opt_ecs *ecs);
 
 int dns_add_OPT_TCP_KEEYALIVE(struct dns_packet *packet, unsigned short timeout);
-int dns_get_OPT_TCP_KEEYALIVE(struct dns_rrs *rrs, unsigned short *opt_code, unsigned short *opt_len, unsigned short *timeout);
+int dns_get_OPT_TCP_KEEYALIVE(struct dns_rrs *rrs, unsigned short *opt_code, unsigned short *opt_len,
+							  unsigned short *timeout);
 /*
  * Packet operation
  */

src/dns_cache.c

@@ -1,342 +1,452 @@
-#include "dns_cache.h"
+/*************************************************************************
-#include "tlog.h"
+ *
-#include <pthread.h>
+ * Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
-
+ *
-struct dns_cache_head {
+ * smartdns is free software: you can redistribute it and/or modify
-	DECLARE_HASHTABLE(cache_hash, 10);
+ * it under the terms of the GNU General Public License as published by
-	struct list_head cache_list;
+ * the Free Software Foundation, either version 3 of the License, or
-	atomic_t num;
+ * (at your option) any later version.
-	int size;
+ *
-	pthread_mutex_t lock;
+ * smartdns is distributed in the hope that it will be useful,
-};
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-static struct dns_cache_head dns_cache_head;
+ * GNU General Public License for more details.
-
+ *
-int dns_cache_init(int size)
+ * You should have received a copy of the GNU General Public License
-{
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
-	INIT_LIST_HEAD(&dns_cache_head.cache_list);
+ */
-	hash_init(dns_cache_head.cache_hash);
+
-	atomic_set(&dns_cache_head.num, 0);
+#include "dns_cache.h"
-	dns_cache_head.size = size;
+#include "stringutil.h"
-
+#include "tlog.h"
-	pthread_mutex_init(&dns_cache_head.lock, NULL);
+#include <pthread.h>
-
+
-	return 0;
+#define DNS_CACHE_MAX_HITNUM 5000
-}
+#define DNS_CACHE_HITNUM_STEP 2
-
+#define DNS_CACHE_HITNUM_STEP_MAX 6
-static __attribute__((unused)) struct dns_cache *_dns_cache_last(void) 
+
-{
+struct dns_cache_head {
-	return list_last_entry(&dns_cache_head.cache_list, struct dns_cache, list);
+	DECLARE_HASHTABLE(cache_hash, 10);
-}
+	struct list_head cache_list;
-
+	struct list_head inactive_list;
-static struct dns_cache *_dns_cache_first(void)
+	atomic_t num;
-{
+	int size;
-	return list_first_entry_or_null(&dns_cache_head.cache_list, struct dns_cache, list);
+	int enable_inactive;
-}
+	int inactive_list_expired;
-
+	pthread_mutex_t lock;
-static void _dns_cache_delete(struct dns_cache *dns_cache)
+};
-{
+
-	hash_del(&dns_cache->node);
+static struct dns_cache_head dns_cache_head;
-	list_del_init(&dns_cache->list);
+
-	atomic_dec(&dns_cache_head.num);
+int dns_cache_init(int size, int enable_inactive, int inactive_list_expired)
-	free(dns_cache);
+{
-}
+	INIT_LIST_HEAD(&dns_cache_head.cache_list);
-
+	INIT_LIST_HEAD(&dns_cache_head.inactive_list);
-void dns_cache_get(struct dns_cache *dns_cache)
+	hash_init(dns_cache_head.cache_hash);
-{
+	atomic_set(&dns_cache_head.num, 0);
-	if (atomic_inc_return(&dns_cache->ref) == 1) {
+	dns_cache_head.size = size;
-		tlog(TLOG_ERROR, "BUG: dns_cache is invalid.");
+	dns_cache_head.enable_inactive = enable_inactive;
-		return;
+	dns_cache_head.inactive_list_expired = inactive_list_expired;
-	}
+
-}
+	pthread_mutex_init(&dns_cache_head.lock, NULL);
-
+
-void dns_cache_release(struct dns_cache *dns_cache)
+	return 0;
-{
+}
-	if (dns_cache == NULL) {
+
-		return;
+static __attribute__((unused)) struct dns_cache *_dns_cache_last(void)
-	}
+{
-	if (!atomic_dec_and_test(&dns_cache->ref)) {
+	struct dns_cache *dns_cache = NULL;
-		return;
+
-	}
+	dns_cache = list_last_entry(&dns_cache_head.inactive_list, struct dns_cache, list);
-
+	if (dns_cache) {
-	_dns_cache_delete(dns_cache);
+		return dns_cache;
-}
+	}
-
+
-static void _dns_cache_remove(struct dns_cache *dns_cache)
+	return list_last_entry(&dns_cache_head.cache_list, struct dns_cache, list);
-{
+}
-	hash_del(&dns_cache->node);
+
-	list_del_init(&dns_cache->list);
+static struct dns_cache *_dns_cache_first(void)
-	dns_cache_release(dns_cache);
+{
-}
+	struct dns_cache *dns_cache = NULL;
-
+
-int dns_cache_replace(char *domain, char *cname, int cname_ttl, int ttl, dns_type_t qtype, unsigned char *addr, int addr_len, int speed)
+	dns_cache = list_first_entry_or_null(&dns_cache_head.inactive_list, struct dns_cache, list);
-{
+	if (dns_cache) {
-	struct dns_cache *dns_cache = NULL;
+		return dns_cache;
-
+	}
-	if (dns_cache_head.size <= 0) {
+
-		return 0;
+	return list_first_entry_or_null(&dns_cache_head.cache_list, struct dns_cache, list);
-	}
+}
-
+
-	/* lookup existing cache */
+static void _dns_cache_delete(struct dns_cache *dns_cache)
-	dns_cache = dns_cache_lookup(domain, qtype);
+{
-	if (dns_cache == NULL) {
+	hash_del(&dns_cache->node);
-		return 0;
+	list_del_init(&dns_cache->list);
-	}
+	atomic_dec(&dns_cache_head.num);
-
+	free(dns_cache);
-	if (ttl < DNS_CACHE_TTL_MIN) {
+}
-		ttl = DNS_CACHE_TTL_MIN;
+
-	}
+void dns_cache_get(struct dns_cache *dns_cache)
-
+{
-	/* update cache data */
+	if (atomic_inc_return(&dns_cache->ref) == 1) {
-	pthread_mutex_lock(&dns_cache_head.lock);
+		tlog(TLOG_ERROR, "BUG: dns_cache is invalid.");
-	dns_cache->ttl = ttl;
+		return;
-	dns_cache->qtype = qtype;
+	}
-	dns_cache->ttl = ttl;
+}
-	dns_cache->del_pending = 0;
+
-	dns_cache->speed = speed;
+void dns_cache_release(struct dns_cache *dns_cache)
-	time(&dns_cache->insert_time);
+{
-	if (qtype == DNS_T_A) {
+	if (dns_cache == NULL) {
-		if (addr_len != DNS_RR_A_LEN) {
+		return;
-			goto errout_unlock;
+	}
-		}
+	if (!atomic_dec_and_test(&dns_cache->ref)) {
-		memcpy(dns_cache->addr, addr, DNS_RR_A_LEN);
+		return;
-	} else if (qtype == DNS_T_AAAA) {
+	}
-		if (addr_len != DNS_RR_AAAA_LEN) {
+
-			goto errout_unlock;
+	_dns_cache_delete(dns_cache);
-		}
+}
-		memcpy(dns_cache->addr, addr, DNS_RR_AAAA_LEN);
+
-	} else {
+static void _dns_cache_remove(struct dns_cache *dns_cache)
-		goto errout_unlock;
+{
-	}
+	hash_del(&dns_cache->node);
-
+	list_del_init(&dns_cache->list);
-	if (cname) {
+	dns_cache_release(dns_cache);
-		strncpy(dns_cache->cname, cname, DNS_MAX_CNAME_LEN);
+}
-		dns_cache->cname_ttl = cname_ttl;
+
-	}
+static void _dns_cache_move_inactive(struct dns_cache *dns_cache)
-	pthread_mutex_unlock(&dns_cache_head.lock);
+{
-
+	list_del_init(&dns_cache->list);
-	dns_cache_release(dns_cache);
+	list_add_tail(&dns_cache->list, &dns_cache_head.inactive_list);
-	return 0;
+}
-errout_unlock:
+
-	pthread_mutex_unlock(&dns_cache_head.lock);
+int dns_cache_replace(char *domain, char *cname, int cname_ttl, int ttl, dns_type_t qtype, unsigned char *addr,
-//errout:
+					  int addr_len, int speed)
-	if (dns_cache) {
+{
-		dns_cache_release(dns_cache);
+	struct dns_cache *dns_cache = NULL;
-	}
+
-	return -1;
+	if (dns_cache_head.size <= 0) {
-}
+		return 0;
-
+	}
-int dns_cache_insert(char *domain, char *cname, int cname_ttl, int ttl, dns_type_t qtype, unsigned char *addr, int addr_len, int speed)
+
-{
+	/* lookup existing cache */
-	uint32_t key = 0;
+	dns_cache = dns_cache_lookup(domain, qtype);
-	struct dns_cache *dns_cache = NULL;
+	if (dns_cache == NULL) {
-
+		return 0;
-	if (dns_cache_head.size <= 0) {
+	}
-		return 0;
+
-	}
+	if (ttl < DNS_CACHE_TTL_MIN) {
-
+		ttl = DNS_CACHE_TTL_MIN;
-	/* if cache already exists, free */
+	}
-	dns_cache = dns_cache_lookup(domain, qtype);
+
-	if (dns_cache) {
+	/* update cache data */
-		dns_cache_delete(dns_cache);
+	pthread_mutex_lock(&dns_cache_head.lock);
-		dns_cache_release(dns_cache);
+	dns_cache->ttl = ttl;
-		dns_cache = NULL;
+	dns_cache->qtype = qtype;
-	}
+	dns_cache->ttl = ttl;
-
+	dns_cache->del_pending = 0;
-	dns_cache = malloc(sizeof(*dns_cache));
+	dns_cache->speed = speed;
-	if (dns_cache == NULL) {
+	time(&dns_cache->insert_time);
-		goto errout;
+	if (qtype == DNS_T_A) {
-	}
+		if (addr_len != DNS_RR_A_LEN) {
-
+			goto errout_unlock;
-	if (ttl < DNS_CACHE_TTL_MIN) {
+		}
-		ttl = DNS_CACHE_TTL_MIN;
+		memcpy(dns_cache->addr, addr, DNS_RR_A_LEN);
-	}
+	} else if (qtype == DNS_T_AAAA) {
-
+		if (addr_len != DNS_RR_AAAA_LEN) {
-	key = hash_string(domain);
+			goto errout_unlock;
-	key = jhash(&qtype, sizeof(qtype), key);
+		}
-	strncpy(dns_cache->domain, domain, DNS_MAX_CNAME_LEN);
+		memcpy(dns_cache->addr, addr, DNS_RR_AAAA_LEN);
-	dns_cache->cname[0] = 0;
+	} else {
-	dns_cache->qtype = qtype;
+		goto errout_unlock;
-	dns_cache->ttl = ttl;
+	}
-	atomic_set(&dns_cache->hitnum, 2);
+
-	dns_cache->del_pending = 0;
+	if (cname) {
-	dns_cache->speed = speed;
+		safe_strncpy(dns_cache->cname, cname, DNS_MAX_CNAME_LEN);
-	atomic_set(&dns_cache->ref, 1);
+		dns_cache->cname_ttl = cname_ttl;
-	time(&dns_cache->insert_time);
+	}
-	if (qtype == DNS_T_A) {
+
-		if (addr_len != DNS_RR_A_LEN) {
+	list_del_init(&dns_cache->list);
-			goto errout;
+	list_add_tail(&dns_cache->list, &dns_cache_head.cache_list);
-		}
+	pthread_mutex_unlock(&dns_cache_head.lock);
-		memcpy(dns_cache->addr, addr, DNS_RR_A_LEN);
+
-	} else if (qtype == DNS_T_AAAA) {
+	dns_cache_release(dns_cache);
-		if (addr_len != DNS_RR_AAAA_LEN) {
+	return 0;
-			goto errout;
+errout_unlock:
-		}
+	pthread_mutex_unlock(&dns_cache_head.lock);
-		memcpy(dns_cache->addr, addr, DNS_RR_AAAA_LEN);
+	// errout:
-	} else {
+	if (dns_cache) {
-		goto errout;
+		dns_cache_release(dns_cache);
-	}
+	}
-
+	return -1;
-	if (cname) {
+}
-		strncpy(dns_cache->cname, cname, DNS_MAX_CNAME_LEN);
+
-		dns_cache->cname_ttl = cname_ttl;
+int dns_cache_insert(char *domain, char *cname, int cname_ttl, int ttl, dns_type_t qtype, unsigned char *addr,
-	}
+					 int addr_len, int speed)
-
+{
-	pthread_mutex_lock(&dns_cache_head.lock);
+	uint32_t key = 0;
-	hash_add(dns_cache_head.cache_hash, &dns_cache->node, key);
+	struct dns_cache *dns_cache = NULL;
-	list_add_tail(&dns_cache->list, &dns_cache_head.cache_list);
+
-	INIT_LIST_HEAD(&dns_cache->check_list);
+	if (dns_cache_head.size <= 0) {
-
+		return 0;
-	/* Release extra cache, remove oldest cache record */
+	}
-	if (atomic_inc_return(&dns_cache_head.num) > dns_cache_head.size) {
+
-		struct dns_cache *del_cache;
+	/* if cache already exists, free */
-		del_cache = _dns_cache_first();
+	dns_cache = dns_cache_lookup(domain, qtype);
-		if (del_cache) {
+	if (dns_cache) {
-			_dns_cache_remove(del_cache);
+		dns_cache_delete(dns_cache);
-		}
+		dns_cache_release(dns_cache);
-	}
+		dns_cache = NULL;
-	pthread_mutex_unlock(&dns_cache_head.lock);
+	}
-
+
-	return 0;
+	dns_cache = malloc(sizeof(*dns_cache));
-errout:
+	if (dns_cache == NULL) {
-	if (dns_cache) {
+		goto errout;
-		free(dns_cache);
+	}
-	}
+
-
+	if (ttl < DNS_CACHE_TTL_MIN) {
-	return -1;
+		ttl = DNS_CACHE_TTL_MIN;
-}
+	}
-
+
-struct dns_cache *dns_cache_lookup(char *domain, dns_type_t qtype)
+	key = hash_string(domain);
-{
+	key = jhash(&qtype, sizeof(qtype), key);
-	uint32_t key = 0;
+	safe_strncpy(dns_cache->domain, domain, DNS_MAX_CNAME_LEN);
-	struct dns_cache *dns_cache = NULL;
+	dns_cache->cname[0] = 0;
-	struct dns_cache *dns_cache_ret = NULL;
+	dns_cache->qtype = qtype;
-	time_t now;
+	dns_cache->ttl = ttl;
-
+	atomic_set(&dns_cache->hitnum, 3);
-	if (dns_cache_head.size <= 0) {
+	dns_cache->hitnum_update_add = DNS_CACHE_HITNUM_STEP;
-		return NULL;
+	dns_cache->del_pending = 0;
-	}
+	dns_cache->speed = speed;
-
+	atomic_set(&dns_cache->ref, 1);
-	key = hash_string(domain);
+	time(&dns_cache->insert_time);
-	key = jhash(&qtype, sizeof(qtype), key);
+	if (qtype == DNS_T_A) {
-
+		if (addr_len != DNS_RR_A_LEN) {
-	time(&now);
+			goto errout;
-	/* find cache */
+		}
-	pthread_mutex_lock(&dns_cache_head.lock);
+		memcpy(dns_cache->addr, addr, DNS_RR_A_LEN);
-	hash_for_each_possible(dns_cache_head.cache_hash, dns_cache, node, key)
+	} else if (qtype == DNS_T_AAAA) {
-	{
+		if (addr_len != DNS_RR_AAAA_LEN) {
-		if (dns_cache->qtype != qtype) {
+			goto errout;
-			continue;
+		}
-		}
+		memcpy(dns_cache->addr, addr, DNS_RR_AAAA_LEN);
-
+	} else {
-		if (strncmp(domain, dns_cache->domain, DNS_MAX_CNAME_LEN) != 0) {
+		goto errout;
-			continue;
+	}
-		}
+
-
+	if (cname) {
-		dns_cache_ret = dns_cache;
+		safe_strncpy(dns_cache->cname, cname, DNS_MAX_CNAME_LEN);
-		break;
+		dns_cache->cname_ttl = cname_ttl;
-	}
+	}
-
+
-	if (dns_cache_ret) {
+	pthread_mutex_lock(&dns_cache_head.lock);
-		/* Return NULL if the cache times out */
+	hash_add(dns_cache_head.cache_hash, &dns_cache->node, key);
-		if (now - dns_cache_ret->insert_time > dns_cache_ret->ttl) {
+	list_add_tail(&dns_cache->list, &dns_cache_head.cache_list);
-			_dns_cache_remove(dns_cache_ret);
+	INIT_LIST_HEAD(&dns_cache->check_list);
-			dns_cache_ret = NULL;
+
-		} else {
+	/* Release extra cache, remove oldest cache record */
-			dns_cache_get(dns_cache_ret);
+	if (atomic_inc_return(&dns_cache_head.num) > dns_cache_head.size) {
-		}
+		struct dns_cache *del_cache;
-	}
+		del_cache = _dns_cache_first();
-
+		if (del_cache) {
-	pthread_mutex_unlock(&dns_cache_head.lock);
+			_dns_cache_remove(del_cache);
-
+		}
-	return dns_cache_ret;
+	}
-}
+	pthread_mutex_unlock(&dns_cache_head.lock);
-
+
-int dns_cache_get_ttl(struct dns_cache *dns_cache)
+	return 0;
-{
+errout:
-	time_t now;
+	if (dns_cache) {
-	int ttl = 0;
+		free(dns_cache);
-	time(&now);
+	}
-
+
-	ttl = dns_cache->insert_time + dns_cache->ttl - now;
+	return -1;
-	if (ttl < 0) {
+}
-		return 0;
+
-	}
+struct dns_cache *dns_cache_lookup(char *domain, dns_type_t qtype)
-
+{
-	return ttl;
+	uint32_t key = 0;
-}
+	struct dns_cache *dns_cache = NULL;
-
+	struct dns_cache *dns_cache_ret = NULL;
-void dns_cache_delete(struct dns_cache *dns_cache)
+	time_t now;
-{
+
-	pthread_mutex_lock(&dns_cache_head.lock);
+	if (dns_cache_head.size <= 0) {
-	_dns_cache_remove(dns_cache);
+		return NULL;
-	pthread_mutex_unlock(&dns_cache_head.lock);
+	}
-}
+
-
+	key = hash_string(domain);
-void dns_cache_update(struct dns_cache *dns_cache)
+	key = jhash(&qtype, sizeof(qtype), key);
-{
+
-	pthread_mutex_lock(&dns_cache_head.lock);
+	time(&now);
-	if (!list_empty(&dns_cache->list)) {
+	/* find cache */
-		list_del_init(&dns_cache->list);
+	pthread_mutex_lock(&dns_cache_head.lock);
-		list_add_tail(&dns_cache->list, &dns_cache_head.cache_list);
+	hash_for_each_possible(dns_cache_head.cache_hash, dns_cache, node, key)
-		atomic_inc(&dns_cache->hitnum);
+	{
-	}
+		if (dns_cache->qtype != qtype) {
-	pthread_mutex_unlock(&dns_cache_head.lock);
+			continue;
-}
+		}
-
+
-void dns_cache_invalidate(dns_cache_preinvalid_callback callback, int ttl_pre)
+		if (strncmp(domain, dns_cache->domain, DNS_MAX_CNAME_LEN) != 0) {
-{
+			continue;
-	struct dns_cache *dns_cache = NULL;
+		}
-	struct dns_cache *tmp;
+
-	time_t now;
+		dns_cache_ret = dns_cache;
-	int ttl = 0;
+		break;
-	LIST_HEAD(checklist);
+	}
-
+
-	if (dns_cache_head.size <= 0) {
+	if (dns_cache_ret) {
-		return;
+		/* Return NULL if the cache times out */
-	}
+		if (dns_cache_head.enable_inactive == 0 && (now - dns_cache_ret->insert_time > dns_cache_ret->ttl)) {
-
+			_dns_cache_remove(dns_cache_ret);
-	time(&now);
+			dns_cache_ret = NULL;
-	pthread_mutex_lock(&dns_cache_head.lock);
+		} else {
-	list_for_each_entry_safe(dns_cache, tmp, &dns_cache_head.cache_list, list)
+			dns_cache_get(dns_cache_ret);
-	{
+		}
-		ttl = dns_cache->insert_time + dns_cache->ttl - now;
+	}
-		if (ttl > 0 && ttl < ttl_pre) {
+
-			/* If the TTL time is in the pre-timeout range, call callback function */
+	pthread_mutex_unlock(&dns_cache_head.lock);
-			if (callback && dns_cache->del_pending == 0) {
+
-				list_add_tail(&dns_cache->check_list, &checklist);
+	return dns_cache_ret;
-				dns_cache_get(dns_cache);
+}
-				dns_cache->del_pending = 1;
+
-				continue;
+int dns_cache_get_ttl(struct dns_cache *dns_cache)
-			}
+{
-		}
+	time_t now;
-
+	int ttl = 0;
-		if (ttl < 0) {
+	time(&now);
-			_dns_cache_remove(dns_cache);
+
-		}
+	ttl = dns_cache->insert_time + dns_cache->ttl - now;
-	}
+	if (ttl < 0) {
-	pthread_mutex_unlock(&dns_cache_head.lock);
+		return 0;
-
+	}
-	list_for_each_entry_safe(dns_cache, tmp, &checklist, check_list)
+
-	{
+	return ttl;
-		/* run callback */
+}
-		if (callback) {
+
-			callback(dns_cache);
+void dns_cache_delete(struct dns_cache *dns_cache)
-		}
+{
-		dns_cache_release(dns_cache);
+	pthread_mutex_lock(&dns_cache_head.lock);
-	}
+	_dns_cache_remove(dns_cache);
-}
+	pthread_mutex_unlock(&dns_cache_head.lock);
-
+}
-void dns_cache_destroy(void)
+
-{
+int dns_cache_hitnum_dec_get(struct dns_cache *dns_cache)
-	struct dns_cache *dns_cache = NULL;
+{
-	struct dns_cache *tmp;
+	int hitnum = 0;
-	pthread_mutex_lock(&dns_cache_head.lock);
+	pthread_mutex_lock(&dns_cache_head.lock);
-	list_for_each_entry_safe(dns_cache, tmp, &dns_cache_head.cache_list, list)
+	hitnum = atomic_dec_return(&dns_cache->hitnum);
-	{
+	if (dns_cache->hitnum_update_add > DNS_CACHE_HITNUM_STEP) {
-		_dns_cache_delete(dns_cache);
+		dns_cache->hitnum_update_add--;
-	}
+	}
-	pthread_mutex_unlock(&dns_cache_head.lock);
+	pthread_mutex_unlock(&dns_cache_head.lock);
-
+
-	pthread_mutex_destroy(&dns_cache_head.lock);
+	return hitnum;
-}
+}
+
+void dns_cache_update(struct dns_cache *dns_cache)
+{
+	pthread_mutex_lock(&dns_cache_head.lock);
+	if (!list_empty(&dns_cache->list)) {
+		list_del_init(&dns_cache->list);
+		list_add_tail(&dns_cache->list, &dns_cache_head.cache_list);
+		atomic_add(dns_cache->hitnum_update_add, &dns_cache->hitnum);
+		if (atomic_read(&dns_cache->hitnum) > DNS_CACHE_MAX_HITNUM) {
+			atomic_set(&dns_cache->hitnum, DNS_CACHE_MAX_HITNUM);
+		}
+
+		if (dns_cache->hitnum_update_add < DNS_CACHE_HITNUM_STEP_MAX) {
+			dns_cache->hitnum_update_add++;
+		}
+	}
+	pthread_mutex_unlock(&dns_cache_head.lock);
+}
+
+void _dns_cache_remove_expired_ttl(time_t *now)
+{
+	struct dns_cache *dns_cache = NULL;
+	struct dns_cache *tmp;
+	int ttl = 0;
+
+	list_for_each_entry_safe(dns_cache, tmp, &dns_cache_head.inactive_list, list)
+	{
+		ttl = dns_cache->insert_time + dns_cache->ttl - *now;
+		if (ttl > 0) {
+			continue;
+		}
+
+		if (dns_cache_head.inactive_list_expired + ttl > 0) {
+			continue;
+		}
+
+		_dns_cache_remove(dns_cache);
+	}
+}
+
+void dns_cache_invalidate(dns_cache_preinvalid_callback callback, int ttl_pre)
+{
+	struct dns_cache *dns_cache = NULL;
+	struct dns_cache *tmp;
+	time_t now;
+	int ttl = 0;
+	LIST_HEAD(checklist);
+
+	if (dns_cache_head.size <= 0) {
+		return;
+	}
+
+	time(&now);
+	pthread_mutex_lock(&dns_cache_head.lock);
+	list_for_each_entry_safe(dns_cache, tmp, &dns_cache_head.cache_list, list)
+	{
+		ttl = dns_cache->insert_time + dns_cache->ttl - now;
+		if (ttl > 0 && ttl < ttl_pre) {
+			/* If the TTL time is in the pre-timeout range, call callback function */
+			if (callback && dns_cache->del_pending == 0) {
+				list_add_tail(&dns_cache->check_list, &checklist);
+				dns_cache_get(dns_cache);
+				dns_cache->del_pending = 1;
+				continue;
+			}
+		}
+
+		if (ttl < 0) {
+			if (dns_cache_head.enable_inactive) {
+				_dns_cache_move_inactive(dns_cache);
+			} else {
+				_dns_cache_remove(dns_cache);
+			}
+		}
+	}
+
+	if (dns_cache_head.enable_inactive && dns_cache_head.inactive_list_expired != 0) {
+		_dns_cache_remove_expired_ttl(&now);
+	}
+
+	pthread_mutex_unlock(&dns_cache_head.lock);
+
+	list_for_each_entry_safe(dns_cache, tmp, &checklist, check_list)
+	{
+		/* run callback */
+		if (callback) {
+			callback(dns_cache);
+		}
+		dns_cache_release(dns_cache);
+	}
+}
+
+void dns_cache_destroy(void)
+{
+	struct dns_cache *dns_cache = NULL;
+	struct dns_cache *tmp;
+	pthread_mutex_lock(&dns_cache_head.lock);
+	list_for_each_entry_safe(dns_cache, tmp, &dns_cache_head.inactive_list, list)
+	{
+		_dns_cache_delete(dns_cache);
+	}
+
+	list_for_each_entry_safe(dns_cache, tmp, &dns_cache_head.cache_list, list)
+	{
+		_dns_cache_delete(dns_cache);
+	}
+	pthread_mutex_unlock(&dns_cache_head.lock);
+
+	pthread_mutex_destroy(&dns_cache_head.lock);
+}

src/dns_cache.h

@@ -1,59 +1,89 @@
-#ifndef _SMARTDNS_CACHE_H
+/*************************************************************************
-#define _SMARTDNS_CACHE_H
+ *
-
+ * Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
-#include "atomic.h"
+ *
-#include "dns.h"
+ * smartdns is free software: you can redistribute it and/or modify
-#include "hash.h"
+ * it under the terms of the GNU General Public License as published by
-#include "hashtable.h"
+ * the Free Software Foundation, either version 3 of the License, or
-#include "list.h"
+ * (at your option) any later version.
-#include <stdlib.h>
+ *
-#include <time.h>
+ * smartdns is distributed in the hope that it will be useful,
-
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-#define DNS_CACHE_TTL_MIN 30
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-
+ * GNU General Public License for more details.
-struct dns_cache {
+ *
-	struct hlist_node node;
+ * You should have received a copy of the GNU General Public License
-	struct list_head list;
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
-	struct list_head check_list;
+ */
-	atomic_t ref;
+
-	char domain[DNS_MAX_CNAME_LEN];
+#ifndef _SMARTDNS_CACHE_H
-	char cname[DNS_MAX_CNAME_LEN];
+#define _SMARTDNS_CACHE_H
-	unsigned int cname_ttl;
+
-	unsigned int ttl;;
+#include "atomic.h"
-	int speed;
+#include "dns.h"
-	atomic_t hitnum;
+#include "hash.h"
-	int del_pending;
+#include "hashtable.h"
-	time_t insert_time;
+#include "list.h"
-	dns_type_t qtype;
+#include <stdlib.h>
-	union {
+#include <time.h>
-		unsigned char ipv4_addr[DNS_RR_A_LEN];
+
-		unsigned char ipv6_addr[DNS_RR_AAAA_LEN];
+#ifdef __cpluscplus
-		unsigned char addr[0];
+extern "C" {
-	};
+#endif
-};
+
-
+#define DNS_CACHE_TTL_MIN 30
-int dns_cache_init(int size);
+
-
+struct dns_cache {
-int dns_cache_replace(char *domain, char *cname, int cname_ttl, int ttl, dns_type_t qtype, unsigned char *addr, int addr_len, int speed);
+	struct hlist_node node;
-
+	struct list_head list;
-int dns_cache_insert(char *domain, char *cname, int cname_ttl, int ttl, dns_type_t qtype, unsigned char *addr, int addr_len, int speed);
+	struct list_head check_list;
-
+	atomic_t ref;
-struct dns_cache *dns_cache_lookup(char *domain, dns_type_t qtype);
+	char domain[DNS_MAX_CNAME_LEN];
-
+	char cname[DNS_MAX_CNAME_LEN];
-void dns_cache_delete(struct dns_cache *dns_cache);
+	unsigned int cname_ttl;
-
+	unsigned int ttl;
-void dns_cache_get(struct dns_cache *dns_cache);
+	int speed;
-
+	atomic_t hitnum;
-void dns_cache_release(struct dns_cache *dns_cache);
+	int hitnum_update_add;
-
+	int del_pending;
-void dns_cache_update(struct dns_cache *dns_cache);
+	time_t insert_time;
-
+	dns_type_t qtype;
-typedef void dns_cache_preinvalid_callback(struct dns_cache *dns_cache);
+	union {
-
+		unsigned char ipv4_addr[DNS_RR_A_LEN];
-void dns_cache_invalidate(dns_cache_preinvalid_callback callback, int ttl_pre);
+		unsigned char ipv6_addr[DNS_RR_AAAA_LEN];
-
+		unsigned char addr[0];
-int dns_cache_get_ttl(struct dns_cache *dns_cache);
+	};
-
+};
-void dns_cache_destroy(void);
+
-
+int dns_cache_init(int size, int enable_inactive, int inactive_list_expired);
-#endif // !_SMARTDNS_CACHE_H
+
+int dns_cache_replace(char *domain, char *cname, int cname_ttl, int ttl, dns_type_t qtype, unsigned char *addr,
+					  int addr_len, int speed);
+
+int dns_cache_insert(char *domain, char *cname, int cname_ttl, int ttl, dns_type_t qtype, unsigned char *addr,
+					 int addr_len, int speed);
+
+struct dns_cache *dns_cache_lookup(char *domain, dns_type_t qtype);
+
+void dns_cache_delete(struct dns_cache *dns_cache);
+
+void dns_cache_get(struct dns_cache *dns_cache);
+
+void dns_cache_release(struct dns_cache *dns_cache);
+
+int dns_cache_hitnum_dec_get(struct dns_cache *dns_cache);
+
+void dns_cache_update(struct dns_cache *dns_cache);
+
+typedef void dns_cache_preinvalid_callback(struct dns_cache *dns_cache);
+
+void dns_cache_invalidate(dns_cache_preinvalid_callback callback, int ttl_pre);
+
+int dns_cache_get_ttl(struct dns_cache *dns_cache);
+
+void dns_cache_destroy(void);
+
+#ifdef __cpluscplus
+}
+#endif
+#endif // !_SMARTDNS_CACHE_H

src/dns_client.h

@@ -1,8 +1,31 @@
+/*************************************************************************
+ *
+ * Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+ *
+ * smartdns is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * smartdns is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #ifndef _SMART_DNS_CLIENT_H
 #define _SMART_DNS_CLIENT_H
 
 #include "dns.h"
-#define DNS_SERVER_SPKI_LEN  64
+
+#ifdef __cpluscplus
+extern "C" {
+#endif
+
+#define DNS_SERVER_SPKI_LEN 64
 #define DNS_SERVER_GROUP_DEFAULT "default"
 
 typedef enum {
@@ -20,16 +43,18 @@ typedef enum dns_result_type {
 } dns_result_type;
 
 #define DNSSERVER_FLAG_BLACKLIST_IP (0x1 << 0)
-#define DNSSERVER_FLAG_CHECK_EDNS (0x1 << 1)
+#define DNSSERVER_FLAG_WHITELIST_IP (0x1 << 1)
-#define DNSSERVER_FLAG_CHECK_TTL (0x1 << 2)
+#define DNSSERVER_FLAG_CHECK_EDNS (0x1 << 2)
+#define DNSSERVER_FLAG_CHECK_TTL (0x1 << 3)
 
 int dns_client_init(void);
 
 int dns_client_set_ecs(char *ip, int subnet);
 
 /* query result notify function */
-typedef int (*dns_client_callback)(char *domain, dns_result_type rtype, unsigned int result_flag, struct dns_packet *packet, unsigned char *inpacket,
+typedef int (*dns_client_callback)(char *domain, dns_result_type rtype, unsigned int result_flag,
-								   int inpacket_len, void *user_ptr);
+								   struct dns_packet *packet, unsigned char *inpacket, int inpacket_len,
+								   void *user_ptr);
 
 /* query domain */
 int dns_client_query(char *domain, int qtype, dns_client_callback callback, void *user_ptr, const char *group_name);
@@ -43,14 +68,19 @@ struct client_dns_server_flag_udp {
 struct client_dns_server_flag_tls {
 	char spki[DNS_SERVER_SPKI_LEN];
 	int spi_len;
-	char host[DNS_MAX_CNAME_LEN];
+	char hostname[DNS_MAX_CNAME_LEN];
+	char tls_host_verify[DNS_MAX_CNAME_LEN];
+	char skip_check_cert;
 };
 
 struct client_dns_server_flag_https {
 	char spki[DNS_SERVER_SPKI_LEN];
 	int spi_len;
-	char host[DNS_MAX_CNAME_LEN];
+	char hostname[DNS_MAX_CNAME_LEN];
+	char httphost[DNS_MAX_CNAME_LEN];
 	char path[DNS_MAX_CNAME_LEN];
+	char tls_host_verify[DNS_MAX_CNAME_LEN];
+	char skip_check_cert;
 };
 
 struct client_dns_server_flags {
@@ -68,7 +98,8 @@ struct client_dns_server_flags {
 int dns_client_spki_decode(const char *spki, unsigned char *spki_data_out);
 
 /* add remote dns server */
-int dns_client_add_server(char *server_ip, int port, dns_server_type_t server_type, struct client_dns_server_flags *flags);
+int dns_client_add_server(char *server_ip, int port, dns_server_type_t server_type,
+						  struct client_dns_server_flags *flags);
 
 /* remove remote dns server */
 int dns_client_remove_server(char *server_ip, int port, dns_server_type_t server_type);
@@ -83,4 +114,7 @@ int dns_client_remove_group(char *group_name);
 
 int dns_server_num(void);
 
+#ifdef __cpluscplus
+}
+#endif
 #endif

src/dns_conf.h

@@ -1,182 +1,255 @@
-#ifndef _DNS_CONF
+/*************************************************************************
-#define _DNS_CONF
+ *
-
+ * Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
-#include "art.h"
+ *
-#include "conf.h"
+ * smartdns is free software: you can redistribute it and/or modify
-#include "dns.h"
+ * it under the terms of the GNU General Public License as published by
-#include "dns_client.h"
+ * the Free Software Foundation, either version 3 of the License, or
-#include "hash.h"
+ * (at your option) any later version.
-#include "hashtable.h"
+ *
-#include "list.h"
+ * smartdns is distributed in the hope that it will be useful,
-#include "radix.h"
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#define DNS_MAX_SERVERS 64
+ * GNU General Public License for more details.
-#define DNS_MAX_IPSET_NAMELEN 32
+ *
-#define DNS_GROUP_NAME_LEN 32
+ * You should have received a copy of the GNU General Public License
-#define DNS_NAX_GROUP_NUMBER 16
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
-#define DNS_MAX_IPLEN 64
+ */
-#define DNS_MAX_SPKI_LEN 64
+
-#define DNS_MAX_URL_LEN 256
+#ifndef _DNS_CONF
-#define DNS_MAX_PATH 1024
+#define _DNS_CONF
-#define DEFAULT_DNS_PORT 53
+
-#define DEFAULT_DNS_TLS_PORT 853
+#include "art.h"
-#define DEFAULT_DNS_HTTPS_PORT 443
+#include "conf.h"
-#define DNS_MAX_CONF_CNAME_LEN 128
+#include "dns.h"
-#define SMARTDNS_CONF_FILE "/etc/smartdns/smartdns.conf"
+#include "dns_client.h"
-#define SMARTDNS_LOG_FILE "/var/log/smartdns.log"
+#include "hash.h"
-#define SMARTDNS_AUDIT_FILE "/var/log/smartdns-audit.log"
+#include "hashtable.h"
-
+#include "list.h"
-enum domain_rule {
+#include "radix.h"
-	DOMAIN_RULE_FLAGS = 0,
+
-	DOMAIN_RULE_ADDRESS_IPV4,
+#ifdef __cpluscplus
-	DOMAIN_RULE_ADDRESS_IPV6,
+extern "C" {
-	DOMAIN_RULE_IPSET,
+#endif
-	DOMAIN_RULE_NAMESERVER,
+
-	DOMAIN_RULE_MAX,
+#define DNS_MAX_BIND_IP 16
-};
+#define DNS_MAX_SERVERS 64
-
+#define DNS_MAX_SERVER_NAME_LEN 128
-#define DOMAIN_FLAG_ADDR_SOA (1 << 0)
+#define DNS_MAX_IPSET_NAMELEN 32
-#define DOMAIN_FLAG_ADDR_IPV4_SOA (1 << 1)
+#define DNS_GROUP_NAME_LEN 32
-#define DOMAIN_FLAG_ADDR_IPV6_SOA (1 << 2)
+#define DNS_NAX_GROUP_NUMBER 16
-#define DOMAIN_FLAG_ADDR_IGN (1 << 3)
+#define DNS_MAX_IPLEN 64
-#define DOMAIN_FLAG_ADDR_IPV4_IGN (1 << 4)
+#define DNS_MAX_SPKI_LEN 64
-#define DOMAIN_FLAG_ADDR_IPV6_IGN (1 << 5)
+#define DNS_MAX_URL_LEN 256
-#define DOMAIN_FLAG_IPSET_IGNORE (1 << 6)
+#define DNS_MAX_PATH 1024
-#define DOMAIN_FLAG_NAMESERVER_IGNORE (1 << 7)
+#define DEFAULT_DNS_PORT 53
-
+#define DEFAULT_DNS_TLS_PORT 853
-#define SERVER_FLAG_EXCLUDE_DEFAULT (1 << 0)
+#define DEFAULT_DNS_HTTPS_PORT 443
-
+#define DNS_MAX_CONF_CNAME_LEN 256
-struct dns_rule_flags {
+#define SMARTDNS_CONF_FILE "/etc/smartdns/smartdns.conf"
-	unsigned int flags;
+#define SMARTDNS_LOG_FILE "/var/log/smartdns.log"
-};
+#define SMARTDNS_AUDIT_FILE "/var/log/smartdns-audit.log"
-
+
-struct dns_address_IPV4 {
+enum domain_rule {
-	unsigned char ipv4_addr[DNS_RR_A_LEN];
+	DOMAIN_RULE_FLAGS = 0,
-};
+	DOMAIN_RULE_ADDRESS_IPV4,
-
+	DOMAIN_RULE_ADDRESS_IPV6,
-struct dns_address_IPV6 {
+	DOMAIN_RULE_IPSET,
-	unsigned char ipv6_addr[DNS_RR_AAAA_LEN];
+	DOMAIN_RULE_NAMESERVER,
-};
+	DOMAIN_RULE_CHECKSPEED,
-
+	DOMAIN_RULE_MAX,
-struct dns_ipset_name {
+};
-	struct hlist_node node;
+
-	char ipsetname[DNS_MAX_IPSET_NAMELEN];
+typedef enum {
-};
+	DNS_BIND_TYPE_UDP,
-
+	DNS_BIND_TYPE_TCP,
-struct dns_ipset_rule {
+	DNS_BIND_TYPE_TLS,
-	const char *ipsetname;
+} DNS_BIND_TYPE;
-};
+
-
+#define DOMAIN_CHECK_NONE 0
-struct dns_domain_rule {
+#define DOMAIN_CHECK_ICMP 1
-	void *rules[DOMAIN_RULE_MAX];
+#define DOMAIN_CHECK_TCP 2
-};
+#define DOMAIN_CHECK_NUM 2
-
+
-struct dns_nameserver_rule {
+#define DOMAIN_FLAG_ADDR_SOA (1 << 0)
-	const char *group_name;
+#define DOMAIN_FLAG_ADDR_IPV4_SOA (1 << 1)
-};
+#define DOMAIN_FLAG_ADDR_IPV6_SOA (1 << 2)
-
+#define DOMAIN_FLAG_ADDR_IGN (1 << 3)
-struct dns_server_groups {
+#define DOMAIN_FLAG_ADDR_IPV4_IGN (1 << 4)
-	struct hlist_node node;
+#define DOMAIN_FLAG_ADDR_IPV6_IGN (1 << 5)
-	char group_name[DNS_GROUP_NAME_LEN];
+#define DOMAIN_FLAG_IPSET_IGNORE (1 << 6)
-	int server_num;
+#define DOMAIN_FLAG_NAMESERVER_IGNORE (1 << 7)
-	struct dns_servers *servers[DNS_MAX_SERVERS];
+
-};
+#define SERVER_FLAG_EXCLUDE_DEFAULT (1 << 0)
-
+
-struct dns_group_table {
+#define BIND_FLAG_NO_RULE_ADDR (1 << 0)
-	DECLARE_HASHTABLE(group, 8);
+#define BIND_FLAG_NO_RULE_NAMESERVER (1 << 1)
-};
+#define BIND_FLAG_NO_RULE_IPSET (1 << 2)
-extern struct dns_group_table dns_group_table;
+#define BIND_FLAG_NO_RULE_SNIPROXY (1 << 3)
-
+#define BIND_FLAG_NO_RULE_SOA (1 << 4)
-struct dns_servers {
+#define BIND_FLAG_NO_SPEED_CHECK (1 << 5)
-	char server[DNS_MAX_IPLEN];
+#define BIND_FLAG_NO_CACHE (1 << 6)
-	unsigned short port;
+#define BIND_FLAG_NO_DUALSTACK_SELECTION (1 << 7)
-	unsigned int result_flag;
+#define BIND_FLAG_FORCE_AAAA_SOA (1 << 8) 
-	unsigned int server_flag;
+
-	int ttl;
+struct dns_rule_flags {
-	dns_server_type_t type;
+	unsigned int flags;
-	char spki[DNS_MAX_SPKI_LEN];
+};
-	char hostname[DNS_MAX_CNAME_LEN];
+
-	char path[DNS_MAX_URL_LEN];
+struct dns_address_IPV4 {
-};
+	unsigned char ipv4_addr[DNS_RR_A_LEN];
-
+};
-/* ip address lists of domain */
+
-struct dns_bogus_ip_address {
+struct dns_address_IPV6 {
-	struct hlist_node node;
+	unsigned char ipv6_addr[DNS_RR_AAAA_LEN];
-	dns_type_t addr_type;
+};
-	union {
+
-		unsigned char ipv4_addr[DNS_RR_A_LEN];
+struct dns_ipset_name {
-		unsigned char ipv6_addr[DNS_RR_AAAA_LEN];
+	struct hlist_node node;
-		unsigned char addr[0];
+	char ipsetname[DNS_MAX_IPSET_NAMELEN];
-	};
+};
-};
+
-
+struct dns_ipset_rule {
-enum address_rule {
+	const char *ipsetname;
-	ADDRESS_RULE_BLACKLIST = 1,
+};
-	ADDRESS_RULE_BOGUS = 2,
+
-	ADDRESS_RULE_IP_IGNORE = 3,
+struct dns_domain_rule {
-};
+	void *rules[DOMAIN_RULE_MAX];
-
+};
-struct dns_ip_address_rule {
+
-	unsigned int blacklist : 1;
+struct dns_nameserver_rule {
-	unsigned int bogus : 1;
+	const char *group_name;
-	unsigned int ip_ignore : 1;
+};
-};
+
-
+struct dns_server_groups {
-struct dns_edns_client_subnet {
+	struct hlist_node node;
-	int enable;
+	char group_name[DNS_GROUP_NAME_LEN];
-	char ip[DNS_MAX_IPLEN];
+	int server_num;
-	int subnet;
+	struct dns_servers *servers[DNS_MAX_SERVERS];
-};
+};
-
+
-struct dns_conf_address_rule {
+struct dns_domain_check_order {
-	radix_tree_t *ipv4;
+	char order[DOMAIN_CHECK_NUM];
-	radix_tree_t *ipv6;
+	unsigned short tcp_port;
-};
+};
-
+
-extern char dns_conf_server_ip[DNS_MAX_IPLEN];
+struct dns_group_table {
-extern char dns_conf_server_tcp_ip[DNS_MAX_IPLEN];
+	DECLARE_HASHTABLE(group, 8);
-
+};
-extern int dns_conf_tcp_idle_time;
+extern struct dns_group_table dns_group_table;
-extern int dns_conf_cachesize;
+
-extern int dns_conf_prefetch;
+struct dns_servers {
-extern struct dns_servers dns_conf_servers[DNS_MAX_SERVERS];
+	char server[DNS_MAX_IPLEN];
-extern int dns_conf_server_num;
+	unsigned short port;
-
+	unsigned int result_flag;
-extern int dns_conf_log_level;
+	unsigned int server_flag;
-extern char dns_conf_log_file[DNS_MAX_PATH];
+	int ttl;
-extern size_t dns_conf_log_size;
+	dns_server_type_t type;
-extern int dns_conf_log_num;
+	char skip_check_cert;
-
+	char spki[DNS_MAX_SPKI_LEN];
-extern struct dns_server_groups dns_conf_server_groups[DNS_NAX_GROUP_NUMBER];
+	char hostname[DNS_MAX_CNAME_LEN];
-extern int dns_conf_server_group_num;
+	char httphost[DNS_MAX_CNAME_LEN];
-
+	char tls_host_verify[DNS_MAX_CNAME_LEN];
-extern int dns_conf_audit_enable;
+	char path[DNS_MAX_URL_LEN];
-extern char dns_conf_audit_file[DNS_MAX_PATH];
+};
-extern size_t dns_conf_audit_size;
+
-extern int dns_conf_audit_num;
+/* ip address lists of domain */
-
+struct dns_bogus_ip_address {
-extern char dns_conf_server_name[DNS_MAX_CONF_CNAME_LEN];
+	struct hlist_node node;
-extern art_tree dns_conf_domain_rule;
+	dns_type_t addr_type;
-extern struct dns_conf_address_rule dns_conf_address_rule;
+	union {
-
+		unsigned char ipv4_addr[DNS_RR_A_LEN];
-extern int dns_conf_dualstack_ip_selection;
+		unsigned char ipv6_addr[DNS_RR_AAAA_LEN];
-extern int dns_conf_dualstack_ip_selection_threshold;
+		unsigned char addr[0];
-
+	};
-extern int dns_conf_rr_ttl;
+};
-extern int dns_conf_rr_ttl_min;
+
-extern int dns_conf_rr_ttl_max;
+enum address_rule {
-extern int dns_conf_force_AAAA_SOA;
+	ADDRESS_RULE_BLACKLIST = 1,
-extern int dns_conf_ipset_timeout_enable;
+	ADDRESS_RULE_WHITELIST = 2,
-
+	ADDRESS_RULE_BOGUS = 3,
-extern struct dns_edns_client_subnet dns_conf_ipv4_ecs;
+	ADDRESS_RULE_IP_IGNORE = 4,
-extern struct dns_edns_client_subnet dns_conf_ipv6_ecs;
+};
-
+
-extern char dns_conf_sni_proxy_ip[DNS_MAX_IPLEN];
+struct dns_ip_address_rule {
-
+	unsigned int blacklist : 1;
-void dns_server_load_exit(void);
+	unsigned int whitelist : 1;
-
+	unsigned int bogus : 1;
-int dns_server_load_conf(const char *file);
+	unsigned int ip_ignore : 1;
-
+};
-extern int config_addtional_file(void *data, int argc, char *argv[]);
+
-
+struct dns_edns_client_subnet {
-#endif // !_DNS_CONF
+	int enable;
+	char ip[DNS_MAX_IPLEN];
+	int subnet;
+};
+
+struct dns_conf_address_rule {
+	radix_tree_t *ipv4;
+	radix_tree_t *ipv6;
+};
+
+struct dns_bind_ip {
+	DNS_BIND_TYPE type;
+	uint32_t flags;
+	char ip[DNS_MAX_IPLEN];
+	const char *group;
+};
+
+extern struct dns_bind_ip dns_conf_bind_ip[DNS_MAX_BIND_IP];
+extern int dns_conf_bind_ip_num;
+
+extern int dns_conf_tcp_idle_time;
+extern int dns_conf_cachesize;
+extern int dns_conf_prefetch;
+extern int dns_conf_serve_expired;
+extern int dns_conf_serve_expired_ttl;
+extern struct dns_servers dns_conf_servers[DNS_MAX_SERVERS];
+extern int dns_conf_server_num;
+
+extern int dns_conf_log_level;
+extern char dns_conf_log_file[DNS_MAX_PATH];
+extern size_t dns_conf_log_size;
+extern int dns_conf_log_num;
+
+extern char dns_conf_ca_file[DNS_MAX_PATH];
+extern char dns_conf_ca_path[DNS_MAX_PATH];
+
+extern struct dns_domain_check_order dns_conf_check_order;
+
+extern struct dns_server_groups dns_conf_server_groups[DNS_NAX_GROUP_NUMBER];
+extern int dns_conf_server_group_num;
+
+extern int dns_conf_audit_enable;
+extern int dns_conf_audit_log_SOA;
+extern char dns_conf_audit_file[DNS_MAX_PATH];
+extern size_t dns_conf_audit_size;
+extern int dns_conf_audit_num;
+
+extern char dns_conf_server_name[DNS_MAX_SERVER_NAME_LEN];
+extern art_tree dns_conf_domain_rule;
+extern struct dns_conf_address_rule dns_conf_address_rule;
+
+extern int dns_conf_dualstack_ip_selection;
+extern int dns_conf_dualstack_ip_selection_threshold;
+
+extern int dns_conf_rr_ttl;
+extern int dns_conf_rr_ttl_min;
+extern int dns_conf_rr_ttl_max;
+extern int dns_conf_force_AAAA_SOA;
+extern int dns_conf_ipset_timeout_enable;
+
+extern struct dns_edns_client_subnet dns_conf_ipv4_ecs;
+extern struct dns_edns_client_subnet dns_conf_ipv6_ecs;
+
+extern char dns_conf_sni_proxy_ip[DNS_MAX_IPLEN];
+
+void dns_server_load_exit(void);
+
+int dns_server_load_conf(const char *file);
+
+extern int config_addtional_file(void *data, int argc, char *argv[]);
+#ifdef __cpluscplus
+}
+#endif
+#endif // !_DNS_CONF

src/dns_server.h

@@ -1,3 +1,21 @@
+/*************************************************************************
+ *
+ * Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+ *
+ * smartdns is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * smartdns is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #ifndef _SMART_DNS_SERVER_H
 #define _SMART_DNS_SERVER_H
 
@@ -18,7 +36,8 @@ void dns_server_stop(void);
 void dns_server_exit(void);
 
 /* query result notify function */
-typedef int (*dns_result_callback)(char *domain, dns_rtcode_t rtcode, dns_type_t addr_type, char *ip, void *user_ptr);
+typedef int (*dns_result_callback)(char *domain, dns_rtcode_t rtcode, dns_type_t addr_type, char *ip,
+								   unsigned int ping_time, void *user_ptr);
 
 /* query domain */
 int dns_server_query(char *domain, int qtype, dns_result_callback callback, void *user_ptr);

src/fast_ping.h

@@ -1,40 +1,60 @@
-#ifndef FAST_PING_H
+/*************************************************************************
-#define FAST_PING_H
+ *
-
+ * Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
-#include <netdb.h>
+ *
-#include <sys/time.h>
+ * smartdns is free software: you can redistribute it and/or modify
-#ifdef __cpluscplus
+ * it under the terms of the GNU General Public License as published by
-extern "C" {
+ * the Free Software Foundation, either version 3 of the License, or
-#endif
+ * (at your option) any later version.
-
+ *
-typedef enum {
+ * smartdns is distributed in the hope that it will be useful,
-	PING_TYPE_ICMP = 1,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-	PING_TYPE_TCP = 2,
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-	PING_TYPE_DNS = 3,
+ * GNU General Public License for more details.
-} PING_TYPE;
+ *
-
+ * You should have received a copy of the GNU General Public License
-typedef enum {
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
-	PING_RESULT_RESPONSE = 1,
+ */
-	PING_RESULT_TIMEOUT = 2,
+
-	PING_RESULT_END = 3,
+#ifndef FAST_PING_H
-} FAST_PING_RESULT;
+#define FAST_PING_H
-
+
-struct ping_host_struct;
+#include <netdb.h>
-typedef void (*fast_ping_result)(struct ping_host_struct *ping_host, const char *host, FAST_PING_RESULT result, struct sockaddr *addr, socklen_t addr_len,
+#include <sys/time.h>
-								 int seqno, int ttl, struct timeval *tv, void *userptr);
+#ifdef __cpluscplus
-
+extern "C" {
-/* start ping */
+#endif
-struct ping_host_struct *fast_ping_start(PING_TYPE type, const char *host, int count, int interval, int timeout, fast_ping_result ping_callback, void *userptr);
+
-
+typedef enum {
-/* stop ping */
+	PING_TYPE_ICMP = 1,
-int fast_ping_stop(struct ping_host_struct *ping_host);
+	PING_TYPE_TCP = 2,
-
+	PING_TYPE_DNS = 3,
-int fast_ping_init(void);
+} PING_TYPE;
-
+
-void fast_ping_exit(void);
+typedef enum {
-
+	PING_RESULT_RESPONSE = 1,
-#ifdef __cpluscplus
+	PING_RESULT_TIMEOUT = 2,
-}
+	PING_RESULT_END = 3,
-#endif
+} FAST_PING_RESULT;
-
+
-#endif // !FAST_PING_H
+struct ping_host_struct;
+typedef void (*fast_ping_result)(struct ping_host_struct *ping_host, const char *host, FAST_PING_RESULT result,
+								 struct sockaddr *addr, socklen_t addr_len, int seqno, int ttl, struct timeval *tv,
+								 void *userptr);
+
+/* start ping */
+struct ping_host_struct *fast_ping_start(PING_TYPE type, const char *host, int count, int interval, int timeout,
+										 fast_ping_result ping_callback, void *userptr);
+
+/* stop ping */
+int fast_ping_stop(struct ping_host_struct *ping_host);
+
+int fast_ping_init(void);
+
+void fast_ping_exit(void);
+
+#ifdef __cpluscplus
+}
+#endif
+
+#endif // !FAST_PING_H

src/http_parse.c

@@ -1,445 +1,463 @@
-#include "http_parse.h"
+/*************************************************************************
-#include "hash.h"
+ *
-#include "hashtable.h"
+ * Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
-#include "jhash.h"
+ *
-#include "list.h"
+ * smartdns is free software: you can redistribute it and/or modify
-#include <stdlib.h>
+ * it under the terms of the GNU General Public License as published by
-#include <string.h>
+ * the Free Software Foundation, either version 3 of the License, or
-#include <unistd.h>
+ * (at your option) any later version.
-
+ *
-struct http_head_fields {
+ * smartdns is distributed in the hope that it will be useful,
-	struct hlist_node node;
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-	struct list_head list;
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-
+ * GNU General Public License for more details.
-	char *name;
+ *
-	char *value;
+ * You should have received a copy of the GNU General Public License
-};
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
+ */
-struct http_head {
+
-	HTTP_HEAD_TYPE head_type;
+#include "http_parse.h"
-	HTTP_METHOD method;
+#include "hash.h"
-	char *url;
+#include "hashtable.h"
-	char *version;
+#include "jhash.h"
-	int code;
+#include "list.h"
-	char *code_msg;
+#include <stdlib.h>
-	int buff_size;
+#include <string.h>
-	int buff_len;
+#include <unistd.h>
-	char *buff;
+
-	int head_ok;
+struct http_head_fields {
-	int head_len;
+	struct hlist_node node;
-	char *data;
+	struct list_head list;
-	int data_len;
+
-	int expect_data_len;
+	char *name;
-	struct http_head_fields field_head;
+	char *value;
-	DECLARE_HASHTABLE(field_map, 4);
+};
-};
+
-
+struct http_head {
-/*
+	HTTP_HEAD_TYPE head_type;
- * Returns:
+	HTTP_METHOD method;
- *  >=0  - success http data len
+	char *url;
- *  -1   - Incomplete request
+	char *version;
- *  -2   - parse failed
+	int code;
- */
+	char *code_msg;
-struct http_head *http_head_init(int buffsize)
+	int buff_size;
-{
+	int buff_len;
-	struct http_head *http_head = NULL;
+	char *buff;
-	char *buffer = NULL;
+	int head_ok;
-
+	int head_len;
-	http_head = malloc(sizeof(*http_head));
+	char *data;
-	if (http_head == NULL) {
+	int data_len;
-		goto errout;
+	int expect_data_len;
-	}
+	struct http_head_fields field_head;
-	memset(http_head, 0, sizeof(*http_head));
+	DECLARE_HASHTABLE(field_map, 4);
-	INIT_LIST_HEAD(&http_head->field_head.list);
+};
-	hash_init(http_head->field_map);
+
-
+/*
-	buffer = malloc(buffsize);
+ * Returns:
-	if (buffer == NULL) {
+ *  >=0  - success http data len
-		goto errout;
+ *  -1   - Incomplete request
-	}
+ *  -2   - parse failed
-
+ */
-	http_head->buff = buffer;
+struct http_head *http_head_init(int buffsize)
-	http_head->buff_size = buffsize;
+{
-
+	struct http_head *http_head = NULL;
-	return http_head;
+	char *buffer = NULL;
-
+
-errout:
+	http_head = malloc(sizeof(*http_head));
-	if (buffer) {
+	if (http_head == NULL) {
-		free(buffer);
+		goto errout;
-	}
+	}
-
+	memset(http_head, 0, sizeof(*http_head));
-	if (http_head) {
+	INIT_LIST_HEAD(&http_head->field_head.list);
-		free(http_head);
+	hash_init(http_head->field_map);
-	}
+
-
+	buffer = malloc(buffsize);
-	return NULL;
+	if (buffer == NULL) {
-}
+		goto errout;
-
+	}
-struct http_head_fields *http_head_first_fields(struct http_head *http_head)
+
-{
+	http_head->buff = buffer;
-	struct http_head_fields *first = NULL;
+	http_head->buff_size = buffsize;
-	first = list_first_entry(&http_head->field_head.list, struct http_head_fields, list);
+
-
+	return http_head;
-	if (first->name == NULL && first->value == NULL) {
+
-		return NULL;
+errout:
-	}
+	if (buffer) {
-
+		free(buffer);
-	return first;
+	}
-}
+
-
+	if (http_head) {
-const char *http_head_get_fields_value(struct http_head *http_head, const char *name)
+		free(http_head);
-{
+	}
-	unsigned long key;
+
-	struct http_head_fields *filed;
+	return NULL;
-
+}
-	key = hash_string(name);
+
-	hash_for_each_possible(http_head->field_map, filed, node, key)
+struct http_head_fields *http_head_first_fields(struct http_head *http_head)
-	{
+{
-		if (strncmp(filed->name, name, 128) == 0) {
+	struct http_head_fields *first = NULL;
-			return filed->value;
+	first = list_first_entry(&http_head->field_head.list, struct http_head_fields, list);
-		}
+
-	}
+	if (first->name == NULL && first->value == NULL) {
-
+		return NULL;
-	return NULL;
+	}
-}
+
-
+	return first;
-struct http_head_fields *http_head_next_fields(struct http_head_fields *fields)
+}
-{
+
-	struct http_head_fields *next = NULL;
+const char *http_head_get_fields_value(struct http_head *http_head, const char *name)
-	next = list_next_entry(fields, list);
+{
-
+	unsigned long key;
-	if (next->name == NULL && next->value == NULL) {
+	struct http_head_fields *filed;
-		return NULL;
+
-	}
+	key = hash_string(name);
-
+	hash_for_each_possible(http_head->field_map, filed, node, key)
-	return next;
+	{
-}
+		if (strncmp(filed->name, name, 128) == 0) {
-
+			return filed->value;
-int http_head_lookup_fields(struct http_head_fields *fields, const char **name, const char **value)
+		}
-{
+	}
-	if (fields == NULL) {
+
-		return -1;
+	return NULL;
-	}
+}
-
+
-	if (name) {
+struct http_head_fields *http_head_next_fields(struct http_head_fields *fields)
-		*name = fields->name;
+{
-	}
+	struct http_head_fields *next = NULL;
-
+	next = list_next_entry(fields, list);
-	if (value) {
+
-		*value = fields->value;
+	if (next->name == NULL && next->value == NULL) {
-	}
+		return NULL;
-
+	}
-	return 0;
+
-}
+	return next;
-
+}
-HTTP_METHOD http_head_get_method(struct http_head *http_head)
+
-{
+int http_head_lookup_fields(struct http_head_fields *fields, const char **name, const char **value)
-	return http_head->method;
+{
-}
+	if (fields == NULL) {
-
+		return -1;
-const char *http_head_get_url(struct http_head *http_head) 
+	}
-{
+
-	return http_head->url;
+	if (name) {
-}
+		*name = fields->name;
-
+	}
-const char *http_head_get_httpversion(struct http_head *http_head) 
+
-{
+	if (value) {
-	return http_head->version;
+		*value = fields->value;
-}
+	}
-
+
-int http_head_get_httpcode(struct http_head *http_head)
+	return 0;
-{
+}
-	return http_head->code;
+
-}
+HTTP_METHOD http_head_get_method(struct http_head *http_head)
-
+{
-char *http_head_get_httpcode_msg(struct http_head *http_head)
+	return http_head->method;
-{
+}
-	return http_head->code_msg;
+
-}
+const char *http_head_get_url(struct http_head *http_head)
-
+{
-HTTP_HEAD_TYPE http_head_get_head_type(struct http_head *http_head)
+	return http_head->url;
-{
+}
-	return http_head->head_type;
+
-}
+const char *http_head_get_httpversion(struct http_head *http_head)
-
+{
-char *http_head_get_data(struct http_head *http_head) 
+	return http_head->version;
-{
+}
-	return http_head->data;
+
-}
+int http_head_get_httpcode(struct http_head *http_head)
-
+{
-int http_head_get_data_len(struct http_head *http_head)
+	return http_head->code;
-{
+}
-	return http_head->data_len;
+
-}
+char *http_head_get_httpcode_msg(struct http_head *http_head)
-
+{
-static int _http_head_add_fields(struct http_head *http_head, char *name, char *value)
+	return http_head->code_msg;
-{
+}
-	unsigned long key = 0;
+
-	struct http_head_fields *fields = NULL;
+HTTP_HEAD_TYPE http_head_get_head_type(struct http_head *http_head)
-	fields = malloc(sizeof(*fields));
+{
-	if (fields == NULL) {
+	return http_head->head_type;
-		return -1;
+}
-	}
+
-	memset(fields, 0, sizeof(*fields));
+char *http_head_get_data(struct http_head *http_head)
-
+{
-	fields->name = name;
+	return http_head->data;
-	fields->value = value;
+}
-
+
-	list_add_tail(&fields->list, &http_head->field_head.list);
+int http_head_get_data_len(struct http_head *http_head)
-	key = hash_string(name);
+{
-	hash_add(http_head->field_map, &fields->node, key);
+	return http_head->data_len;
-
+}
-	return 0;
+
-}
+static int _http_head_add_fields(struct http_head *http_head, char *name, char *value)
-
+{
-static int _http_head_parse_response(struct http_head *http_head, char *key, char *value)
+	unsigned long key = 0;
-{
+	struct http_head_fields *fields = NULL;
-	char *field_start = NULL;
+	fields = malloc(sizeof(*fields));
-	char *tmp_ptr = NULL;
+	if (fields == NULL) {
-	char *result = NULL;
+		return -1;
-	char *ret_code = NULL;
+	}
-
+	memset(fields, 0, sizeof(*fields));
-	if (strstr(key, "HTTP/") == NULL) {
+
-		return -1;
+	fields->name = name;
-	}
+	fields->value = value;
-
+
-	for (tmp_ptr = value; *tmp_ptr != 0; tmp_ptr++) {
+	list_add_tail(&fields->list, &http_head->field_head.list);
-		if (field_start == NULL) {
+	key = hash_string(name);
-			field_start = tmp_ptr;
+	hash_add(http_head->field_map, &fields->node, key);
-		}
+
-
+	return 0;
-		if (*tmp_ptr == ' ') {
+}
-			*tmp_ptr = '\0';
+
-			if (ret_code == NULL) {
+static int _http_head_parse_response(struct http_head *http_head, char *key, char *value)
-				ret_code = field_start;
+{
-			} else if (result == NULL) {
+	char *field_start = NULL;
-				result = field_start;
+	char *tmp_ptr = NULL;
-				break;
+	char *result = NULL;
-			}
+	char *ret_code = NULL;
-
+
-			field_start = NULL;
+	if (strstr(key, "HTTP/") == NULL) {
-		}
+		return -1;
-	}
+	}
-
+
-	if (field_start && result == NULL) {
+	for (tmp_ptr = value; *tmp_ptr != 0; tmp_ptr++) {
-		result = field_start;
+		if (field_start == NULL) {
-	}
+			field_start = tmp_ptr;
-
+		}
-	if (ret_code == NULL || result == NULL) {
+
-		return -1;
+		if (*tmp_ptr == ' ') {
-	}
+			*tmp_ptr = '\0';
-
+			if (ret_code == NULL) {
-	http_head->code = atol(ret_code);
+				ret_code = field_start;
-	http_head->code_msg = result;
+			} else if (result == NULL) {
-	http_head->version = key;
+				result = field_start;
-    http_head->head_type = HTTP_HEAD_RESPONSE;
+				break;
-
+			}
-	return 0;
+
-}
+			field_start = NULL;
-
+		}
-static int _http_head_parse_request(struct http_head *http_head, char *key, char *value)
+	}
-{
+
-	int method = HTTP_METHOD_INVALID;
+	if (field_start && result == NULL) {
-	char *url = NULL;
+		result = field_start;
-	char *version = NULL;
+	}
-	char *tmp_ptr = value;
+
-	char *field_start = NULL;
+	if (ret_code == NULL || result == NULL) {
-
+		return -1;
-	if (strncmp(key, "GET", sizeof("GET")) == 0) {
+	}
-		method = HTTP_METHOD_GET;
+
-	} else if (strncmp(key, "POST", sizeof("POST")) == 0) {
+	http_head->code = atol(ret_code);
-		method = HTTP_METHOD_POST;
+	http_head->code_msg = result;
-	} else if (strncmp(key, "PUT", sizeof("PUT")) == 0) {
+	http_head->version = key;
-		method = HTTP_METHOD_PUT;
+	http_head->head_type = HTTP_HEAD_RESPONSE;
-	} else if (strncmp(key, "DELETE", sizeof("DELETE")) == 0) {
+
-		method = HTTP_METHOD_DELETE;
+	return 0;
-	} else if (strncmp(key, "TRACE", sizeof("TRACE")) == 0) {
+}
-		method = HTTP_METHOD_TRACE;
+
-	} else if (strncmp(key, "CONNECT", sizeof("CONNECT")) == 0) {
+static int _http_head_parse_request(struct http_head *http_head, char *key, char *value)
-		method = HTTP_METHOD_CONNECT;
+{
-	} else {
+	int method = HTTP_METHOD_INVALID;
-		return _http_head_parse_response(http_head, key, value);
+	char *url = NULL;
-	}
+	char *version = NULL;
-
+	char *tmp_ptr = value;
-	for (tmp_ptr = value; *tmp_ptr != 0; tmp_ptr++) {
+	char *field_start = NULL;
-		if (field_start == NULL) {
+
-			field_start = tmp_ptr;
+	if (strncmp(key, "GET", sizeof("GET")) == 0) {
-		}
+		method = HTTP_METHOD_GET;
-		if (*tmp_ptr == ' ') {
+	} else if (strncmp(key, "POST", sizeof("POST")) == 0) {
-			*tmp_ptr = '\0';
+		method = HTTP_METHOD_POST;
-			if (url == NULL) {
+	} else if (strncmp(key, "PUT", sizeof("PUT")) == 0) {
-				url = field_start;
+		method = HTTP_METHOD_PUT;
-			}
+	} else if (strncmp(key, "DELETE", sizeof("DELETE")) == 0) {
-
+		method = HTTP_METHOD_DELETE;
-			field_start = NULL;
+	} else if (strncmp(key, "TRACE", sizeof("TRACE")) == 0) {
-		}
+		method = HTTP_METHOD_TRACE;
-	}
+	} else if (strncmp(key, "CONNECT", sizeof("CONNECT")) == 0) {
-
+		method = HTTP_METHOD_CONNECT;
-	if (field_start && version == NULL) {
+	} else {
-		version = field_start;
+		return _http_head_parse_response(http_head, key, value);
-	}
+	}
-
+
-	http_head->method = method;
+	for (tmp_ptr = value; *tmp_ptr != 0; tmp_ptr++) {
-	http_head->url = url;
+		if (field_start == NULL) {
-	http_head->version = version;
+			field_start = tmp_ptr;
-	http_head->head_type = HTTP_HEAD_REQUEST;
+		}
-
+		if (*tmp_ptr == ' ') {
-	return 0;
+			*tmp_ptr = '\0';
-}
+			if (url == NULL) {
-
+				url = field_start;
-static int _http_head_parse(struct http_head *http_head)
+			}
-{
+
-	int i = 0;
+			field_start = NULL;
-	char *key = NULL;
+		}
-	char *value = NULL;
+	}
-	char *data;
+
-	int has_first_line = 0;
+	if (field_start && version == NULL) {
-
+		version = field_start;
-	int inkey = 1;
+	}
-	int invalue = 0;
+
-
+	http_head->method = method;
-	data = http_head->buff;
+	http_head->url = url;
-	for (i = 0; i < http_head->head_len; i++, data++) {
+	http_head->version = version;
-		if (inkey) {
+	http_head->head_type = HTTP_HEAD_REQUEST;
-			if (key == NULL && *data != ' ' && *data != '\r' && *data != '\n') {
+
-				key = data;
+	return 0;
-				continue;
+}
-			}
+
-
+static int _http_head_parse(struct http_head *http_head)
-			if (*data == ':' || *data == ' ') {
+{
-				*data = '\0';
+	int i = 0;
-				inkey = 0;
+	char *key = NULL;
-				invalue = 1;
+	char *value = NULL;
-				continue;
+	char *data;
-			}
+	int has_first_line = 0;
-		}
+
-
+	int inkey = 1;
-		if (invalue) {
+	int invalue = 0;
-			if (value == NULL && *data != ' ') {
+
-				value = data;
+	data = http_head->buff;
-				continue;
+	for (i = 0; i < http_head->head_len; i++, data++) {
-			}
+		if (inkey) {
-
+			if (key == NULL && *data != ' ' && *data != '\r' && *data != '\n') {
-			if (*data == '\r' || *data == '\n') {
+				key = data;
-				*data = '\0';
+				continue;
-				inkey = 1;
+			}
-				invalue = 0;
+
-			}
+			if (*data == ':' || *data == ' ') {
-		}
+				*data = '\0';
-
+				inkey = 0;
-		if (key && value && invalue == 0) {
+				invalue = 1;
-			if (has_first_line == 0) {
+				continue;
-				if (_http_head_parse_request(http_head, key, value) != 0) {
+			}
-					return -2;
+		}
-				}
+
-
+		if (invalue) {
-				has_first_line = 1;
+			if (value == NULL && *data != ' ') {
-			} else {
+				value = data;
-				if (_http_head_add_fields(http_head, key, value) != 0) {
+				continue;
-					return -2;
+			}
-				}
+
-			}
+			if (*data == '\r' || *data == '\n') {
-
+				*data = '\0';
-			key = NULL;
+				inkey = 1;
-			value = NULL;
+				invalue = 0;
-			inkey = 1;
+			}
-			invalue = 0;
+		}
-		}
+
-	}
+		if (key && value && invalue == 0) {
-
+			if (has_first_line == 0) {
-	return 0;
+				if (_http_head_parse_request(http_head, key, value) != 0) {
-}
+					return -2;
-
+				}
-int http_head_parse(struct http_head *http_head, const char *data, int data_len)
+
-{
+				has_first_line = 1;
-	int i = 0;
+			} else {
-	char *buff_end = NULL;
+				if (_http_head_add_fields(http_head, key, value) != 0) {
-	int left_size = 0;
+					return -2;
-	int process_data_len = 0;
+				}
-
+			}
-	left_size = http_head->buff_size - http_head->buff_len;
+
-
+			key = NULL;
-	if (left_size < data_len) {
+			value = NULL;
-		return -3;
+			inkey = 1;
-	}
+			invalue = 0;
-
+		}
-	buff_end = http_head->buff + http_head->buff_len;
+	}
-	if (http_head->head_ok == 0) {
+
-		for (i = 0; i < data_len; i++, data++) {
+	return 0;
-			*(buff_end + i) = *data;
+}
-			if (*data == '\n') {
+
-				if (http_head->buff_len + i < 2) {
+int http_head_parse(struct http_head *http_head, const char *data, int data_len)
-					continue;
+{
-				}
+	int i = 0;
-
+	char *buff_end = NULL;
-				if (*(buff_end + i - 2) == '\n') {
+	int left_size = 0;
-					http_head->head_ok = 1;
+	int process_data_len = 0;
-					http_head->head_len = http_head->buff_len + i - 2;
+
-					i++;
+	left_size = http_head->buff_size - http_head->buff_len;
-					buff_end += i;
+
-					data_len -= i;
+	if (left_size < data_len) {
-					data++;
+		return -3;
-					if (_http_head_parse(http_head) != 0) {
+	}
-						return -2;
+
-					}
+	buff_end = http_head->buff + http_head->buff_len;
-
+	if (http_head->head_ok == 0) {
-					const char *content_len = NULL;
+		for (i = 0; i < data_len; i++, data++) {
-					content_len = http_head_get_fields_value(http_head, "Content-Length");
+			*(buff_end + i) = *data;
-					if (content_len) {
+			if (*data == '\n') {
-						http_head->expect_data_len = atol(content_len);
+				if (http_head->buff_len + i < 2) {
-					} else {
+					continue;
-						http_head->expect_data_len = 0;
+				}
-					}
+
-
+				if (*(buff_end + i - 2) == '\n') {
-					if (http_head->expect_data_len < 0) {
+					http_head->head_ok = 1;
-						return -2;
+					http_head->head_len = http_head->buff_len + i - 2;
-					}
+					i++;
-
+					buff_end += i;
-					break;
+					data_len -= i;
-				}
+					data++;
-			}
+					if (_http_head_parse(http_head) != 0) {
-		}
+						return -2;
-
+					}
-		process_data_len += i;
+
-		if (http_head->head_ok == 0) {
+					const char *content_len = NULL;
-			// Read data again */
+					content_len = http_head_get_fields_value(http_head, "Content-Length");
-			http_head->buff_len += process_data_len;
+					if (content_len) {
-			return -1;
+						http_head->expect_data_len = atol(content_len);
-		}
+					} else {
-	}
+						http_head->expect_data_len = 0;
-
+					}
-	if (http_head->head_ok == 1) {
+
-		int get_data_len = (http_head->expect_data_len > data_len) ? data_len : http_head->expect_data_len;
+					if (http_head->expect_data_len < 0) {
-		if (http_head->data == NULL) {
+						return -2;
-			http_head->data = buff_end;
+					}
-		}
+
-
+					break;
-		memcpy(buff_end, data, get_data_len);
+				}
-		process_data_len += get_data_len;
+			}
-		http_head->data_len += get_data_len;
+		}
-	}
+
-
+		process_data_len += i;
-	http_head->buff_len += process_data_len;
+		if (http_head->head_ok == 0) {
-	if (http_head->data_len < http_head->expect_data_len) {
+			// Read data again */
-		return -1;
+			http_head->buff_len += process_data_len;
-	}
+			return -1;
-
+		}
-	return process_data_len;
+	}
-}
+
-
+	if (http_head->head_ok == 1) {
-void http_head_destroy(struct http_head *http_head)
+		int get_data_len = (http_head->expect_data_len > data_len) ? data_len : http_head->expect_data_len;
-{
+		if (http_head->data == NULL) {
-	struct http_head_fields *fields, *tmp;
+			http_head->data = buff_end;
-
+		}
-	list_for_each_entry_safe(fields, tmp, &http_head->field_head.list, list)
+
-	{
+		memcpy(buff_end, data, get_data_len);
-		list_del(&fields->list);
+		process_data_len += get_data_len;
-		free(fields);
+		http_head->data_len += get_data_len;
-	}
+	}
-
+
-	if (http_head->buff) {
+	http_head->buff_len += process_data_len;
-		free(http_head->buff);
+	if (http_head->data_len < http_head->expect_data_len) {
-	}
+		return -1;
-
+	}
-	free(http_head);
+
-}
+	return process_data_len;
+}
+
+void http_head_destroy(struct http_head *http_head)
+{
+	struct http_head_fields *fields, *tmp;
+
+	list_for_each_entry_safe(fields, tmp, &http_head->field_head.list, list)
+	{
+		list_del(&fields->list);
+		free(fields);
+	}
+
+	if (http_head->buff) {
+		free(http_head->buff);
+	}
+
+	free(http_head);
+}

src/http_parse.h

@@ -1,69 +1,87 @@
-#ifndef HTTP_PARSER_H
+/*************************************************************************
-#define HTTP_PARSER_H
+ *
-
+ * Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
-#ifdef __cpluscplus
+ *
-extern "C" {
+ * smartdns is free software: you can redistribute it and/or modify
-#endif
+ * it under the terms of the GNU General Public License as published by
-
+ * the Free Software Foundation, either version 3 of the License, or
-struct http_head;
+ * (at your option) any later version.
-struct http_head_fields;
+ *
-
+ * smartdns is distributed in the hope that it will be useful,
-typedef enum HTTP_METHOD {
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-	HTTP_METHOD_INVALID = 0,
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-	HTTP_METHOD_GET,
+ * GNU General Public License for more details.
-	HTTP_METHOD_HEAD,
+ *
-	HTTP_METHOD_POST,
+ * You should have received a copy of the GNU General Public License
-	HTTP_METHOD_PUT,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
-	HTTP_METHOD_DELETE,
+ */
-	HTTP_METHOD_TRACE,
+
-	HTTP_METHOD_CONNECT,
+#ifndef HTTP_PARSER_H
-} HTTP_METHOD;
+#define HTTP_PARSER_H
-
+
-typedef enum HTTP_HEAD_TYPE {
+#ifdef __cpluscplus
-	HTTP_HEAD_INVALID = 0,
+extern "C" {
-	HTTP_HEAD_REQUEST = 1,
+#endif
-	HTTP_HEAD_RESPONSE = 2,
+
-} HTTP_HEAD_TYPE;
+struct http_head;
-
+struct http_head_fields;
-struct http_head *http_head_init(int buffsize);
+
-
+typedef enum HTTP_METHOD {
-HTTP_HEAD_TYPE http_head_get_head_type(struct http_head *http_head);
+	HTTP_METHOD_INVALID = 0,
-
+	HTTP_METHOD_GET,
-HTTP_METHOD http_head_get_method(struct http_head *http_head);
+	HTTP_METHOD_HEAD,
-
+	HTTP_METHOD_POST,
-const char *http_head_get_url(struct http_head *http_head);
+	HTTP_METHOD_PUT,
-
+	HTTP_METHOD_DELETE,
-const char *http_head_get_httpversion(struct http_head *http_head);
+	HTTP_METHOD_TRACE,
-
+	HTTP_METHOD_CONNECT,
-int http_head_get_httpcode(struct http_head *http_head);
+} HTTP_METHOD;
-
+
-char *http_head_get_httpcode_msg(struct http_head *http_head);
+typedef enum HTTP_HEAD_TYPE {
-
+	HTTP_HEAD_INVALID = 0,
-char *http_head_get_data(struct http_head *http_head);
+	HTTP_HEAD_REQUEST = 1,
-
+	HTTP_HEAD_RESPONSE = 2,
-int http_head_get_data_len(struct http_head *http_head);
+} HTTP_HEAD_TYPE;
-
+
-struct http_head_fields *http_head_first_fields(struct http_head *http_head);
+struct http_head *http_head_init(int buffsize);
-
+
-struct http_head_fields *http_head_next_fields(struct http_head_fields *fields);
+HTTP_HEAD_TYPE http_head_get_head_type(struct http_head *http_head);
-
+
-const char *http_head_get_fields_value(struct http_head *http_head, const char *name);
+HTTP_METHOD http_head_get_method(struct http_head *http_head);
-
+
-int http_head_lookup_fields(struct http_head_fields *fields, const char **name, const char **value);
+const char *http_head_get_url(struct http_head *http_head);
-
+
-/*
+const char *http_head_get_httpversion(struct http_head *http_head);
- * Returns:
+
- *  >=0  - success http data len
+int http_head_get_httpcode(struct http_head *http_head);
- *  -1   - Incomplete request
+
- *  -2   - parse failed
+char *http_head_get_httpcode_msg(struct http_head *http_head);
- *  -3   - buffer is small
+
- */
+char *http_head_get_data(struct http_head *http_head);
-int http_head_parse(struct http_head *http_head, const char *data, int data_len);
+
-
+int http_head_get_data_len(struct http_head *http_head);
-void http_head_destroy(struct http_head *http_head);
+
-
+struct http_head_fields *http_head_first_fields(struct http_head *http_head);
-#ifdef __cpluscplus
+
-}
+struct http_head_fields *http_head_next_fields(struct http_head_fields *fields);
-#endif
+
-
+const char *http_head_get_fields_value(struct http_head *http_head, const char *name);
-#endif // !HTTP_PARSER_H
+
+int http_head_lookup_fields(struct http_head_fields *fields, const char **name, const char **value);
+
+/*
+ * Returns:
+ *  >=0  - success http data len
+ *  -1   - Incomplete request
+ *  -2   - parse failed
+ *  -3   - buffer is small
+ */
+int http_head_parse(struct http_head *http_head, const char *data, int data_len);
+
+void http_head_destroy(struct http_head *http_head);
+
+#ifdef __cpluscplus
+}
+#endif
+
+#endif // !HTTP_PARSER_H

src/include/art.h

@@ -1,240 +1,251 @@
-/*
+/*
-Copyright (c) 2012, Armon Dadgar
+Copyright (c) 2012, Armon Dadgar
-All rights reserved.
+All rights reserved.
-
+
-Redistribution and use in source and binary forms, with or without
+Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are met:
+modification, are permitted provided that the following conditions are met:
-    * Redistributions of source code must retain the above copyright
+    * Redistributions of source code must retain the above copyright
-      notice, this list of conditions and the following disclaimer.
+      notice, this list of conditions and the following disclaimer.
-    * Redistributions in binary form must reproduce the above copyright
+    * Redistributions in binary form must reproduce the above copyright
-      notice, this list of conditions and the following disclaimer in the
+      notice, this list of conditions and the following disclaimer in the
-      documentation and/or other materials provided with the distribution.
+      documentation and/or other materials provided with the distribution.
-    * Neither the name of the organization nor the
+    * Neither the name of the organization nor the
-      names of its contributors may be used to endorse or promote products
+      names of its contributors may be used to endorse or promote products
-      derived from this software without specific prior written permission.
+      derived from this software without specific prior written permission.
-
+
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
-ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-DISCLAIMED. IN NO EVENT SHALL ARMON DADGAR BE LIABLE FOR ANY
+DISCLAIMED. IN NO EVENT SHALL ARMON DADGAR BE LIABLE FOR ANY
-DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
-ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
+*/
-#include <stdint.h>
+#include <stdint.h>
-#ifndef ART_H
+#ifndef ART_H
-#define ART_H
+#define ART_H
-
+
-#ifdef __cplusplus
+#ifdef __cplusplus
-extern "C" {
+extern "C" {
-#endif
+#endif
-
+
-#define NODE4   1
+#define NODE4   1
-#define NODE16  2
+#define NODE16  2
-#define NODE48  3
+#define NODE48  3
-#define NODE256 4
+#define NODE256 4
-
+
-#define MAX_PREFIX_LEN 10
+#define MAX_PREFIX_LEN 10
-
+
-#if defined(__GNUC__) && !defined(__clang__)
+#if defined(__GNUC__) && !defined(__clang__)
-# if __STDC_VERSION__ >= 199901L && 402 == (__GNUC__ * 100 + __GNUC_MINOR__)
+# if __STDC_VERSION__ >= 199901L && 402 == (__GNUC__ * 100 + __GNUC_MINOR__)
-/*
+/*
- * GCC 4.2.2's C99 inline keyword support is pretty broken; avoid. Introduced in
+ * GCC 4.2.2's C99 inline keyword support is pretty broken; avoid. Introduced in
- * GCC 4.2.something, fixed in 4.3.0. So checking for specific major.minor of
+ * GCC 4.2.something, fixed in 4.3.0. So checking for specific major.minor of
- * 4.2 is fine.
+ * 4.2 is fine.
- */
+ */
-#  define BROKEN_GCC_C99_INLINE
+#  define BROKEN_GCC_C99_INLINE
-# endif
+# endif
-#endif
+#endif
-
+
-typedef int(*art_callback)(void *data, const unsigned char *key, uint32_t key_len, void *value);
+typedef int(*art_callback)(void *data, const unsigned char *key, uint32_t key_len, void *value);
-
+
-/**
+/**
- * This struct is included as part
+ * This struct is included as part
- * of all the various node sizes
+ * of all the various node sizes
- */
+ */
-typedef struct {
+typedef struct {
-    uint8_t type;
+    uint8_t type;
-    uint8_t num_children;
+    uint8_t num_children;
-    uint32_t partial_len;
+    uint32_t partial_len;
-    unsigned char partial[MAX_PREFIX_LEN];
+    unsigned char partial[MAX_PREFIX_LEN];
-} art_node;
+} art_node;
-
+
-/**
+/**
- * Small node with only 4 children
+ * Small node with only 4 children
- */
+ */
-typedef struct {
+typedef struct {
-    art_node n;
+    art_node n;
-    unsigned char keys[4];
+    unsigned char keys[4];
-    art_node *children[4];
+    art_node *children[4];
-} art_node4;
+} art_node4;
-
+
-/**
+/**
- * Node with 16 children
+ * Node with 16 children
- */
+ */
-typedef struct {
+typedef struct {
-    art_node n;
+    art_node n;
-    unsigned char keys[16];
+    unsigned char keys[16];
-    art_node *children[16];
+    art_node *children[16];
-} art_node16;
+} art_node16;
-
+
-/**
+/**
- * Node with 48 children, but
+ * Node with 48 children, but
- * a full 256 byte field.
+ * a full 256 byte field.
- */
+ */
-typedef struct {
+typedef struct {
-    art_node n;
+    art_node n;
-    unsigned char keys[256];
+    unsigned char keys[256];
-    art_node *children[48];
+    art_node *children[48];
-} art_node48;
+} art_node48;
-
+
-/**
+/**
- * Full node with 256 children
+ * Full node with 256 children
- */
+ */
-typedef struct {
+typedef struct {
-    art_node n;
+    art_node n;
-    art_node *children[256];
+    art_node *children[256];
-} art_node256;
+} art_node256;
-
+
-/**
+/**
- * Represents a leaf. These are
+ * Represents a leaf. These are
- * of arbitrary size, as they include the key.
+ * of arbitrary size, as they include the key.
- */
+ */
-typedef struct {
+typedef struct {
-    void *value;
+    void *value;
-    uint32_t key_len;
+    uint32_t key_len;
-    unsigned char key[0];
+    unsigned char key[0];
-} art_leaf;
+} art_leaf;
-
+
-/**
+/**
- * Main struct, points to root.
+ * Main struct, points to root.
- */
+ */
-typedef struct {
+typedef struct {
-    art_node *root;
+    art_node *root;
-    uint64_t size;
+    uint64_t size;
-} art_tree;
+} art_tree;
-
+
-/**
+/**
- * Initializes an ART tree
+ * Initializes an ART tree
- * @return 0 on success.
+ * @return 0 on success.
- */
+ */
-int art_tree_init(art_tree *t);
+int art_tree_init(art_tree *t);
-
+
-/**
+/**
- * DEPRECATED
+ * DEPRECATED
- * Initializes an ART tree
+ * Initializes an ART tree
- * @return 0 on success.
+ * @return 0 on success.
- */
+ */
-#define init_art_tree(...) art_tree_init(__VA_ARGS__)
+#define init_art_tree(...) art_tree_init(__VA_ARGS__)
-
+
-/**
+/**
- * Destroys an ART tree
+ * Destroys an ART tree
- * @return 0 on success.
+ * @return 0 on success.
- */
+ */
-int art_tree_destroy(art_tree *t);
+int art_tree_destroy(art_tree *t);
-
+
-/**
+/**
- * DEPRECATED
+ * DEPRECATED
- * Initializes an ART tree
+ * Initializes an ART tree
- * @return 0 on success.
+ * @return 0 on success.
- */
+ */
-#define destroy_art_tree(...) art_tree_destroy(__VA_ARGS__)
+#define destroy_art_tree(...) art_tree_destroy(__VA_ARGS__)
-
+
-/**
+/**
- * Returns the size of the ART tree.
+ * Returns the size of the ART tree.
- */
+ */
-#ifdef BROKEN_GCC_C99_INLINE
+#ifdef BROKEN_GCC_C99_INLINE
-# define art_size(t) ((t)->size)
+# define art_size(t) ((t)->size)
-#else
+#else
-static inline uint64_t art_size(art_tree *t) {
+static inline uint64_t art_size(art_tree *t) {
-    return t->size;
+    return t->size;
-}
+}
-#endif
+#endif
-
+
-/**
+/**
- * Inserts a new value into the ART tree
+ * Inserts a new value into the ART tree
- * @arg t The tree
+ * @arg t The tree
- * @arg key The key
+ * @arg key The key
- * @arg key_len The length of the key
+ * @arg key_len The length of the key
- * @arg value Opaque value.
+ * @arg value Opaque value.
- * @return NULL if the item was newly inserted, otherwise
+ * @return NULL if the item was newly inserted, otherwise
- * the old value pointer is returned.
+ * the old value pointer is returned.
- */
+ */
-void* art_insert(art_tree *t, const unsigned char *key, int key_len, void *value);
+void* art_insert(art_tree *t, const unsigned char *key, int key_len, void *value);
-
+
-/**
+/**
- * Deletes a value from the ART tree
+ * Deletes a value from the ART tree
- * @arg t The tree
+ * @arg t The tree
- * @arg key The key
+ * @arg key The key
- * @arg key_len The length of the key
+ * @arg key_len The length of the key
- * @return NULL if the item was not found, otherwise
+ * @return NULL if the item was not found, otherwise
- * the value pointer is returned.
+ * the value pointer is returned.
- */
+ */
-void* art_delete(art_tree *t, const unsigned char *key, int key_len);
+void* art_delete(art_tree *t, const unsigned char *key, int key_len);
-
+
-/**
+/**
- * Searches for a value in the ART tree
+ * Searches for a value in the ART tree
- * @arg t The tree
+ * @arg t The tree
- * @arg key The key
+ * @arg key The key
- * @arg key_len The length of the key
+ * @arg key_len The length of the key
- * @return NULL if the item was not found, otherwise
+ * @return NULL if the item was not found, otherwise
- * the value pointer is returned.
+ * the value pointer is returned.
- */
+ */
-void* art_search(const art_tree *t, const unsigned char *key, int key_len);
+void* art_search(const art_tree *t, const unsigned char *key, int key_len);
-
+
-/**
+/**
- * Searches substring for a value in the ART tree
+ * Searches substring for a value in the ART tree
- * @arg t The tree
+ * @arg t The tree
- * @arg str The key
+ * @arg str The key
- * @arg str_len The length of the key
+ * @arg str_len The length of the key
- * @return NULL if the item was not found, otherwise
+ * @return NULL if the item was not found, otherwise
- * the value pointer is returned.
+ * the value pointer is returned.
- */
+ */
-void *art_substring(const art_tree *t, const unsigned char *str, int str_len, unsigned char *key, int *key_len);
+void *art_substring(const art_tree *t, const unsigned char *str, int str_len, unsigned char *key, int *key_len);
-
+
-/**
+/**
- * Returns the minimum valued leaf
+ * Wakk substring for a value in the ART tree
- * @return The minimum leaf or NULL
+ * @arg t The tree
- */
+ * @arg str The key
-art_leaf* art_minimum(art_tree *t);
+ * @arg str_len The length of the key
-
+ * @return NULL if the item was not found, otherwise
-/**
+ * the value pointer is returned.
- * Returns the maximum valued leaf
+ */
- * @return The maximum leaf or NULL
+typedef int (*walk_func)(unsigned char *key, uint32_t key_len, void *value, void *arg);
- */
+void art_substring_walk(const art_tree *t, const unsigned char *str, int str_len, walk_func func, void *arg);
-art_leaf* art_maximum(art_tree *t);
+
-
+/**
-/**
+ * Returns the minimum valued leaf
- * Iterates through the entries pairs in the map,
+ * @return The minimum leaf or NULL
- * invoking a callback for each. The call back gets a
+ */
- * key, value for each and returns an integer stop value.
+art_leaf* art_minimum(art_tree *t);
- * If the callback returns non-zero, then the iteration stops.
+
- * @arg t The tree to iterate over
+/**
- * @arg cb The callback function to invoke
+ * Returns the maximum valued leaf
- * @arg data Opaque handle passed to the callback
+ * @return The maximum leaf or NULL
- * @return 0 on success, or the return of the callback.
+ */
- */
+art_leaf* art_maximum(art_tree *t);
-int art_iter(art_tree *t, art_callback cb, void *data);
+
-
+/**
-/**
+ * Iterates through the entries pairs in the map,
- * Iterates through the entries pairs in the map,
+ * invoking a callback for each. The call back gets a
- * invoking a callback for each that matches a given prefix.
+ * key, value for each and returns an integer stop value.
- * The call back gets a key, value for each and returns an integer stop value.
+ * If the callback returns non-zero, then the iteration stops.
- * If the callback returns non-zero, then the iteration stops.
+ * @arg t The tree to iterate over
- * @arg t The tree to iterate over
+ * @arg cb The callback function to invoke
- * @arg prefix The prefix of keys to read
+ * @arg data Opaque handle passed to the callback
- * @arg prefix_len The length of the prefix
+ * @return 0 on success, or the return of the callback.
- * @arg cb The callback function to invoke
+ */
- * @arg data Opaque handle passed to the callback
+int art_iter(art_tree *t, art_callback cb, void *data);
- * @return 0 on success, or the return of the callback.
+
- */
+/**
-int art_iter_prefix(art_tree *t, const unsigned char *prefix, int prefix_len, art_callback cb, void *data);
+ * Iterates through the entries pairs in the map,
-
+ * invoking a callback for each that matches a given prefix.
-#ifdef __cplusplus
+ * The call back gets a key, value for each and returns an integer stop value.
-}
+ * If the callback returns non-zero, then the iteration stops.
-#endif
+ * @arg t The tree to iterate over
-
+ * @arg prefix The prefix of keys to read
-#endif
+ * @arg prefix_len The length of the prefix
+ * @arg cb The callback function to invoke
+ * @arg data Opaque handle passed to the callback
+ * @return 0 on success, or the return of the callback.
+ */
+int art_iter_prefix(art_tree *t, const unsigned char *prefix, int prefix_len, art_callback cb, void *data);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

src/include/atomic.h

@@ -1,3 +1,22 @@
+/*************************************************************************
+ *
+ * Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+ *
+ * smartdns is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * smartdns is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
 #ifndef _GENERIC_ATOMIC_H
 #define _GENERIC_ATOMIC_H
 

src/include/bitmap.h

@@ -1,3 +1,22 @@
+/*************************************************************************
+ *
+ * Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+ *
+ * smartdns is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * smartdns is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
 #ifndef _PERF_BITOPS_H
 #define _PERF_BITOPS_H
 

src/include/bitops.h

@@ -1,3 +1,22 @@
+/*************************************************************************
+ *
+ * Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+ *
+ * smartdns is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * smartdns is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
 #ifndef _GENERIC_BITOPS_H_
 #define _GENERIC_BITOPS_H_
 

src/include/conf.h

@@ -1,123 +1,141 @@
-#ifndef _GENERIC_CONF_H
+/*************************************************************************
-#define _GENERIC_CONF_H
+ *
-
+ * Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
-#include <unistd.h>
+ *
-
+ * smartdns is free software: you can redistribute it and/or modify
-#define MAX_LINE_LEN 1024
+ * it under the terms of the GNU General Public License as published by
-#define MAX_KEY_LEN 64
+ * the Free Software Foundation, either version 3 of the License, or
-#define CONF_INT_MAX (~(1 << 31))
+ * (at your option) any later version.
-#define CONF_INT_MIN (1 << 31)
+ *
-
+ * smartdns is distributed in the hope that it will be useful,
-#define CONF_RET_OK     0
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-#define CONF_RET_ERR   -1
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#define CONF_RET_WARN  -2
+ * GNU General Public License for more details.
-#define CONF_RET_NOENT -3
+ *
-
+ * You should have received a copy of the GNU General Public License
-struct config_item {
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
-	const char *item;
+ */
-	int (*item_func)(const char *item, void *data, int argc, char *argv[]);
+
-	void *data;
+#ifndef _GENERIC_CONF_H
-};
+#define _GENERIC_CONF_H
-
+
-struct config_item_custom {
+#include <unistd.h>
-	void *custom_data;
+
-	int (*custom_func)(void *data, int argc, char *argv[]);
+#define MAX_LINE_LEN 1024
-};
+#define MAX_KEY_LEN 64
-
+#define CONF_INT_MAX (~(1 << 31))
-struct config_item_int {
+#define CONF_INT_MIN (1 << 31)
-	int *data;
+
-	int min;
+#define CONF_RET_OK 0
-	int max;
+#define CONF_RET_ERR -1
-};
+#define CONF_RET_WARN -2
-
+#define CONF_RET_NOENT -3
-struct config_item_string {
+
-	char *data;
+struct config_item {
-	size_t size;
+	const char *item;
-};
+	int (*item_func)(const char *item, void *data, int argc, char *argv[]);
-
+	void *data;
-struct config_item_yesno {
+};
-	int *data;
+
-};
+struct config_item_custom {
-
+	void *custom_data;
-struct config_item_size {
+	int (*custom_func)(void *data, int argc, char *argv[]);
-	size_t *data;
+};
-	size_t min;
+
-	size_t max;
+struct config_item_int {
-};
+	int *data;
-
+	int min;
-#define CONF_INT(key, value, min_value, max_value)                                                                                                             \
+	int max;
-	{                                                                                                                                                          \
+};
-		key, conf_int, &(struct config_item_int)                                                                                                               \
+
-		{                                                                                                                                                      \
+struct config_item_string {
-			.data = value, .min = min_value, .max = max_value                                                                                                  \
+	char *data;
-		}                                                                                                                                                      \
+	size_t size;
-	}
+};
-#define CONF_STRING(key, value, len_value)                                                                                                                     \
+
-	{                                                                                                                                                          \
+struct config_item_yesno {
-		key, conf_string, &(struct config_item_string)                                                                                                         \
+	int *data;
-		{                                                                                                                                                      \
+};
-			.data = value, .size = len_value                                                                                                                   \
+
-		}                                                                                                                                                      \
+struct config_item_size {
-	}
+	size_t *data;
-#define CONF_YESNO(key, value)                                                                                                                                 \
+	size_t min;
-	{                                                                                                                                                          \
+	size_t max;
-		key, conf_yesno, &(struct config_item_yesno)                                                                                                           \
+};
-		{                                                                                                                                                      \
+
-			.data = value                                                                                                                                      \
+#define CONF_INT(key, value, min_value, max_value)                                                                     \
-		}                                                                                                                                                      \
+	{                                                                                                                  \
-	}
+		key, conf_int, &(struct config_item_int)                                                                       \
-#define CONF_SIZE(key, value, min_value, max_value)                                                                                                            \
+		{                                                                                                              \
-	{                                                                                                                                                          \
+			.data = value, .min = min_value, .max = max_value                                                          \
-		key, conf_size, &(struct config_item_size)                                                                                                             \
+		}                                                                                                              \
-		{                                                                                                                                                      \
+	}
-			.data = value, .min = min_value, .max = max_value                                                                                                  \
+#define CONF_STRING(key, value, len_value)                                                                             \
-		}                                                                                                                                                      \
+	{                                                                                                                  \
-	}
+		key, conf_string, &(struct config_item_string)                                                                 \
-/*
+		{                                                                                                              \
- * func: int (*func)(void *data, int argc, char *argv[]);
+			.data = value, .size = len_value                                                                           \
- */
+		}                                                                                                              \
-#define CONF_CUSTOM(key, func, data)                                                                                                                           \
+	}
-	{                                                                                                                                                          \
+#define CONF_YESNO(key, value)                                                                                         \
-		key, conf_custom, &(struct config_item_custom)                                                                                                         \
+	{                                                                                                                  \
-		{                                                                                                                                                      \
+		key, conf_yesno, &(struct config_item_yesno)                                                                   \
-			.custom_data = data, .custom_func = func                                                                                                           \
+		{                                                                                                              \
-		}                                                                                                                                                      \
+			.data = value                                                                                              \
-	}
+		}                                                                                                              \
-
+	}
-#define CONF_END()                                                                                                                                             \
+#define CONF_SIZE(key, value, min_value, max_value)                                                                    \
-	{                                                                                                                                                          \
+	{                                                                                                                  \
-		NULL, NULL, NULL                                                                                                                                                \
+		key, conf_size, &(struct config_item_size)                                                                     \
-	}
+		{                                                                                                              \
-
+			.data = value, .min = min_value, .max = max_value                                                          \
-extern int conf_custom(const char *item, void *data, int argc, char *argv[]);
+		}                                                                                                              \
-
+	}
-extern int conf_int(const char *item, void *data, int argc, char *argv[]);
+/*
-
+ * func: int (*func)(void *data, int argc, char *argv[]);
-extern int conf_string(const char *item, void *data, int argc, char *argv[]);
+ */
-
+#define CONF_CUSTOM(key, func, data)                                                                                   \
-extern int conf_yesno(const char *item, void *data, int argc, char *argv[]);
+	{                                                                                                                  \
-
+		key, conf_custom, &(struct config_item_custom)                                                                 \
-extern int conf_size(const char *item, void *data, int argc, char *argv[]);
+		{                                                                                                              \
-
+			.custom_data = data, .custom_func = func                                                                   \
-/*
+		}                                                                                                              \
- * Example:
+	}
- *  int num = 0;
+
- *
+#define CONF_END()                                                                                                     \
- *  struct config_item itmes [] = {
+	{                                                                                                                  \
- *       CONF_INT("CONF_NUM", &num, -1, 10),
+		NULL, NULL, NULL                                                                                               \
- *       CONF_END();
+	}
- *  }
+
- *
+extern int conf_custom(const char *item, void *data, int argc, char *argv[]);
- *  load_conf(file, items);
+
- *
+extern int conf_int(const char *item, void *data, int argc, char *argv[]);
- */
+
-
+extern int conf_string(const char *item, void *data, int argc, char *argv[]);
-typedef int(conf_error_handler)(const char *file, int lineno, int ret);
+
-
+extern int conf_yesno(const char *item, void *data, int argc, char *argv[]);
-int load_conf(const char *file, struct config_item items[], conf_error_handler handler);
+
-
+extern int conf_size(const char *item, void *data, int argc, char *argv[]);
-void load_exit(void);
+
-
+/*
-const char *conf_get_conf_file(void);
+ * Example:
-
+ *  int num = 0;
-#endif // !_GENERIC_CONF_H
+ *
+ *  struct config_item itmes [] = {
+ *       CONF_INT("CONF_NUM", &num, -1, 10),
+ *       CONF_END();
+ *  }
+ *
+ *  load_conf(file, items);
+ *
+ */
+
+typedef int(conf_error_handler)(const char *file, int lineno, int ret);
+
+int load_conf(const char *file, struct config_item items[], conf_error_handler handler);
+
+void load_exit(void);
+
+const char *conf_get_conf_file(void);
+
+#endif // !_GENERIC_CONF_H

src/include/findbit.h

@@ -1,5 +1,24 @@
-#ifndef _TOOLS_LINUX_ASM_GENERIC_BITOPS_FIND_H_
+/*************************************************************************
-#define _TOOLS_LINUX_ASM_GENERIC_BITOPS_FIND_H_
+ *
+ * Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+ *
+ * smartdns is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * smartdns is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#ifndef _TOOLS_GENERIC_BITOPS_FIND_H_
+#define _TOOLS_GENERIC_BITOPS_FIND_H_
 
 #ifndef find_next_bit
 /**
@@ -74,4 +93,4 @@ extern unsigned long find_first_bit(const unsigned long *addr,
 unsigned long find_first_zero_bit(const unsigned long *addr, unsigned long size);
 #endif
 
-#endif /*_TOOLS_LINUX_ASM_GENERIC_BITOPS_FIND_H_ */
+#endif /*_TOOLS_GENERIC_BITOPS_FIND_H_ */

src/include/gcc_builtin.h

@@ -1,3 +1,22 @@
+/*************************************************************************
+ *
+ * Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+ *
+ * smartdns is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * smartdns is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
 #ifndef _TOOLS_LINUX_COMPILER_H_
 #define _TOOLS_LINUX_COMPILER_H_
 

src/include/hash.h

@@ -1,3 +1,22 @@
+/*************************************************************************
+ *
+ * Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+ *
+ * smartdns is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * smartdns is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
 #ifndef _GENERIC_HASH_H
 #define _GENERIC_HASH_H
 

src/include/hashtable.h

@@ -1,6 +1,19 @@
-/*
+/*************************************************************************
- * Statically sized hash table implementation
+ *
- * (C) 2012  Sasha Levin <levinsasha928@gmail.com>
+ * Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+ *
+ * smartdns is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * smartdns is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 #ifndef _GENERIC_HASHTABLE_H

src/include/jhash.h

@@ -1,3 +1,21 @@
+/*************************************************************************
+ *
+ * Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+ *
+ * smartdns is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * smartdns is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #ifndef _JHASH_H
 #define _JHASH_H
 

src/include/list.h

@@ -1,3 +1,20 @@
+/*************************************************************************
+ *
+ * Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+ *
+ * smartdns is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * smartdns is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 
 #ifndef _GENERIC_LIST_H
 #define _GENERIC_LIST_H

src/include/radix.h

@@ -1,162 +1,162 @@
-/*
+/*
- * Copyright (c) 1999-2000
+ * Copyright (c) 1999-2000
- * 
+ * 
- * The Regents of the University of Michigan ("The Regents") and
+ * The Regents of the University of Michigan ("The Regents") and
- * Merit Network, Inc. All rights reserved.  Redistribution and use
+ * Merit Network, Inc. All rights reserved.  Redistribution and use
- * in source and binary forms, with or without modification, are
+ * in source and binary forms, with or without modification, are
- * permitted provided that the following conditions are met:
+ * permitted provided that the following conditions are met:
- * 
+ * 
- * 1. Redistributions of source code must retain the above 
+ * 1. Redistributions of source code must retain the above 
- * copyright notice, this list of conditions and the 
+ * copyright notice, this list of conditions and the 
- * following disclaimer.
+ * following disclaimer.
- * 
+ * 
- * 2. Redistributions in binary form must reproduce the above 
+ * 2. Redistributions in binary form must reproduce the above 
- * copyright notice, this list of conditions and the 
+ * copyright notice, this list of conditions and the 
- * following disclaimer in the documentation and/or other 
+ * following disclaimer in the documentation and/or other 
- * materials provided with the distribution.
+ * materials provided with the distribution.
- * 
+ * 
- * 3. All advertising materials mentioning features or use of 
+ * 3. All advertising materials mentioning features or use of 
- * this software must display the following acknowledgement:
+ * this software must display the following acknowledgement:
- * 
+ * 
- *   This product includes software developed by the University of
+ *   This product includes software developed by the University of
- *   Michigan, Merit Network, Inc., and their contributors.
+ *   Michigan, Merit Network, Inc., and their contributors.
- * 
+ * 
- * 4. Neither the name of the University, Merit Network, nor the
+ * 4. Neither the name of the University, Merit Network, nor the
- * names of their contributors may be used to endorse or 
+ * names of their contributors may be used to endorse or 
- * promote products derived from this software without 
+ * promote products derived from this software without 
- * specific prior written permission.
+ * specific prior written permission.
- * 
+ * 
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "AS IS"
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
- * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL TH E REGENTS
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL TH E REGENTS
- * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HO WEVER CAUSED
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HO WEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
+ * POSSIBILITY OF SUCH DAMAGE.
- */
+ */
-/*
+/*
- * Portions Copyright (c) 2004,2005 Damien Miller <djm@mindrot.org>
+ * Portions Copyright (c) 2004,2005 Damien Miller <djm@mindrot.org>
- *
+ *
- * Permission to use, copy, modify, and distribute this software for any
+ * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
+ * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
+ * copyright notice and this permission notice appear in all copies.
- *
+ *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
+ */
-
+
-/* $Id: radix.h,v 1.9 2007/10/24 06:03:08 djm Exp $ */
+/* $Id: radix.h,v 1.9 2007/10/24 06:03:08 djm Exp $ */
-
+
-#ifndef _RADIX_H
+#ifndef _RADIX_H
-#define _RADIX_H
+#define _RADIX_H
-
+
-#if defined(_MSC_VER)
+#if defined(_MSC_VER)
-#include <winsock2.h>
+#include <winsock2.h>
-#include <ws2tcpip.h>
+#include <ws2tcpip.h>
-#else
+#else
-# include <sys/types.h>
+# include <sys/types.h>
-# include <sys/socket.h>
+# include <sys/socket.h>
-# include <netinet/in.h>
+# include <netinet/in.h>
-# include <arpa/inet.h>
+# include <arpa/inet.h>
-# include <netdb.h>
+# include <netdb.h>
-#endif
+#endif
-
+
-#if defined(_MSC_VER)
+#if defined(_MSC_VER)
-# define snprintf _snprintf
+# define snprintf _snprintf
-typedef unsigned __int8		u_int8_t;
+typedef unsigned __int8		u_int8_t;
-typedef unsigned __int16	u_int16_t;
+typedef unsigned __int16	u_int16_t;
-typedef unsigned __int32	u_int32_t;
+typedef unsigned __int32	u_int32_t;
-const char *inet_ntop(int af, const void *src, char *dst, size_t size);
+const char *inet_ntop(int af, const void *src, char *dst, size_t size);
-size_t strlcpy(char *dst, const char *src, size_t size);
+size_t strlcpy(char *dst, const char *src, size_t size);
-#endif
+#endif
-
+
-/*
+/*
- * Originally from MRT include/mrt.h
+ * Originally from MRT include/mrt.h
- * $MRTId: mrt.h,v 1.1.1.1 2000/08/14 18:46:10 labovit Exp $
+ * $MRTId: mrt.h,v 1.1.1.1 2000/08/14 18:46:10 labovit Exp $
- */
+ */
-typedef struct _prefix_t {
+typedef struct _prefix_t {
-	u_int family;			/* AF_INET | AF_INET6 */
+	u_int family;			/* AF_INET | AF_INET6 */
-	u_int bitlen;			/* same as mask? */
+	u_int bitlen;			/* same as mask? */
-	int ref_count;			/* reference count */
+	int ref_count;			/* reference count */
-	union {
+	union {
-		struct in_addr sin;
+		struct in_addr sin;
-		struct in6_addr sin6;
+		struct in6_addr sin6;
-	} add;
+	} add;
-} prefix_t;
+} prefix_t;
-
+
-void Deref_Prefix(prefix_t *prefix);
+void Deref_Prefix(prefix_t *prefix);
-
+
-/*
+/*
- * Originally from MRT include/radix.h
+ * Originally from MRT include/radix.h
- * $MRTId: radix.h,v 1.1.1.1 2000/08/14 18:46:10 labovit Exp $
+ * $MRTId: radix.h,v 1.1.1.1 2000/08/14 18:46:10 labovit Exp $
- */
+ */
-typedef struct _radix_node_t {
+typedef struct _radix_node_t {
-	u_int bit;			/* flag if this node used */
+	u_int bit;			/* flag if this node used */
-	prefix_t *prefix;		/* who we are in radix tree */
+	prefix_t *prefix;		/* who we are in radix tree */
-	struct _radix_node_t *l, *r;	/* left and right children */
+	struct _radix_node_t *l, *r;	/* left and right children */
-	struct _radix_node_t *parent;	/* may be used */
+	struct _radix_node_t *parent;	/* may be used */
-	void *data;			/* pointer to data */
+	void *data;			/* pointer to data */
-} radix_node_t;
+} radix_node_t;
-
+
-typedef struct _radix_tree_t {
+typedef struct _radix_tree_t {
-	radix_node_t *head;
+	radix_node_t *head;
-	u_int maxbits;			/* for IP, 32 bit addresses */
+	u_int maxbits;			/* for IP, 32 bit addresses */
-	int num_active_node;		/* for debug purpose */
+	int num_active_node;		/* for debug purpose */
-} radix_tree_t;
+} radix_tree_t;
-
+
-/* Type of callback function */
+/* Type of callback function */
-typedef void (*rdx_cb_t)(radix_node_t *, void *);
+typedef void (*rdx_cb_t)(radix_node_t *, void *);
-
+
-radix_tree_t *New_Radix(void);
+radix_tree_t *New_Radix(void);
-void Destroy_Radix(radix_tree_t *radix, rdx_cb_t func, void *cbctx);
+void Destroy_Radix(radix_tree_t *radix, rdx_cb_t func, void *cbctx);
-radix_node_t *radix_lookup(radix_tree_t *radix, prefix_t *prefix);
+radix_node_t *radix_lookup(radix_tree_t *radix, prefix_t *prefix);
-void radix_remove(radix_tree_t *radix, radix_node_t *node);
+void radix_remove(radix_tree_t *radix, radix_node_t *node);
-radix_node_t *radix_search_exact(radix_tree_t *radix, prefix_t *prefix);
+radix_node_t *radix_search_exact(radix_tree_t *radix, prefix_t *prefix);
-radix_node_t *radix_search_best(radix_tree_t *radix, prefix_t *prefix);
+radix_node_t *radix_search_best(radix_tree_t *radix, prefix_t *prefix);
-void radix_process(radix_tree_t *radix, rdx_cb_t func, void *cbctx);
+void radix_process(radix_tree_t *radix, rdx_cb_t func, void *cbctx);
-
+
-#define RADIX_MAXBITS 128
+#define RADIX_MAXBITS 128
-
+
-#define RADIX_WALK(Xhead, Xnode) \
+#define RADIX_WALK(Xhead, Xnode) \
-	do { \
+	do { \
-		radix_node_t *Xstack[RADIX_MAXBITS+1]; \
+		radix_node_t *Xstack[RADIX_MAXBITS+1]; \
-		radix_node_t **Xsp = Xstack; \
+		radix_node_t **Xsp = Xstack; \
-		radix_node_t *Xrn = (Xhead); \
+		radix_node_t *Xrn = (Xhead); \
-		while ((Xnode = Xrn)) { \
+		while ((Xnode = Xrn)) { \
-			if (Xnode->prefix)
+			if (Xnode->prefix)
-
+
-#define RADIX_WALK_END \
+#define RADIX_WALK_END \
-			if (Xrn->l) { \
+			if (Xrn->l) { \
-				if (Xrn->r) { \
+				if (Xrn->r) { \
-					*Xsp++ = Xrn->r; \
+					*Xsp++ = Xrn->r; \
-				} \
+				} \
-				Xrn = Xrn->l; \
+				Xrn = Xrn->l; \
-			} else if (Xrn->r) { \
+			} else if (Xrn->r) { \
-				Xrn = Xrn->r; \
+				Xrn = Xrn->r; \
-			} else if (Xsp != Xstack) { \
+			} else if (Xsp != Xstack) { \
-				Xrn = *(--Xsp); \
+				Xrn = *(--Xsp); \
-			} else { \
+			} else { \
-				Xrn = (radix_node_t *) 0; \
+				Xrn = (radix_node_t *) 0; \
-			} \
+			} \
-		} \
+		} \
-	} while (0)
+	} while (0)
-
+
-/* Local additions */
+/* Local additions */
-
+
-prefix_t *prefix_pton(const char *string, long len, prefix_t *prefix, const char **errmsg);
+prefix_t *prefix_pton(const char *string, long len, prefix_t *prefix, const char **errmsg);
-prefix_t *prefix_from_blob(unsigned char *blob, int len, int prefixlen, prefix_t *prefix);
+prefix_t *prefix_from_blob(unsigned char *blob, int len, int prefixlen, prefix_t *prefix);
-const char *prefix_addr_ntop(prefix_t *prefix, char *buf, size_t len);
+const char *prefix_addr_ntop(prefix_t *prefix, char *buf, size_t len);
-const char *prefix_ntop(prefix_t *prefix, char *buf, size_t len);
+const char *prefix_ntop(prefix_t *prefix, char *buf, size_t len);
-
+
-#endif /* _RADIX_H */
+#endif /* _RADIX_H */
-
+

src/include/rbtree.h

@@ -1,288 +1,305 @@
-
+/*************************************************************************
-#ifndef _GENERIC_RBTREE_H
+ *
-#define _GENERIC_RBTREE_H
+ * Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
-
+ *
-#include <stddef.h>
+ * smartdns is free software: you can redistribute it and/or modify
-
+ * it under the terms of the GNU General Public License as published by
-struct rb_node {
+ * the Free Software Foundation, either version 3 of the License, or
-	unsigned long __rb_parent_color;
+ * (at your option) any later version.
-	struct rb_node *rb_right;
+ *
-	struct rb_node *rb_left;
+ * smartdns is distributed in the hope that it will be useful,
-} __attribute__((aligned(sizeof(long))));
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-/* The alignment might seem pointless, but allegedly CRIS needs it */
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-
+ * GNU General Public License for more details.
-struct rb_root {
+ *
-	struct rb_node *rb_node;
+ * You should have received a copy of the GNU General Public License
-};
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
+ */
-#define rb_parent(r) ((struct rb_node *)((r)->__rb_parent_color & ~3))
+
-
+#ifndef _GENERIC_RBTREE_H
-#define RB_ROOT                                                                                                                                                \
+#define _GENERIC_RBTREE_H
-	(struct rb_root)                                                                                                                                           \
+
-	{                                                                                                                                                          \
+#include <stddef.h>
-		NULL,                                                                                                                                                  \
+
-	}
+struct rb_node {
-#define rb_entry(ptr, type, member) container_of(ptr, type, member)
+	unsigned long __rb_parent_color;
-
+	struct rb_node *rb_right;
-#define RB_EMPTY_ROOT(root) ((root)->rb_node == NULL)
+	struct rb_node *rb_left;
-
+} __attribute__((aligned(sizeof(long))));
-/* 'empty' nodes are nodes that are known not to be inserted in an rbtree */
+/* The alignment might seem pointless, but allegedly CRIS needs it */
-#define RB_EMPTY_NODE(node) ((node)->__rb_parent_color == (unsigned long)(node))
+
-#define RB_CLEAR_NODE(node) ((node)->__rb_parent_color = (unsigned long)(node))
+struct rb_root {
-
+	struct rb_node *rb_node;
-extern void rb_insert_color(struct rb_node *, struct rb_root *);
+};
-extern void rb_erase(struct rb_node *, struct rb_root *);
+
-
+#define rb_parent(r) ((struct rb_node *)((r)->__rb_parent_color & ~3))
-/* Find logical next and previous nodes in a tree */
+
-extern struct rb_node *rb_next(const struct rb_node *);
+#define RB_ROOT                                                                                                                                                \
-extern struct rb_node *rb_prev(const struct rb_node *);
+	(struct rb_root)                                                                                                                                           \
-extern struct rb_node *rb_first(const struct rb_root *);
+	{                                                                                                                                                          \
-extern struct rb_node *rb_last(const struct rb_root *);
+		NULL,                                                                                                                                                  \
-
+	}
-/* Postorder iteration - always visit the parent after its children */
+#define rb_entry(ptr, type, member) container_of(ptr, type, member)
-extern struct rb_node *rb_first_postorder(const struct rb_root *);
+
-extern struct rb_node *rb_next_postorder(const struct rb_node *);
+#define RB_EMPTY_ROOT(root) ((root)->rb_node == NULL)
-
+
-/* Fast replacement of a single node without remove/rebalance/add/rebalance */
+/* 'empty' nodes are nodes that are known not to be inserted in an rbtree */
-extern void rb_replace_node(struct rb_node *victim, struct rb_node *new_node, struct rb_root *root);
+#define RB_EMPTY_NODE(node) ((node)->__rb_parent_color == (unsigned long)(node))
-
+#define RB_CLEAR_NODE(node) ((node)->__rb_parent_color = (unsigned long)(node))
-static inline void rb_link_node(struct rb_node *node, struct rb_node *parent, struct rb_node **rb_link)
+
-{
+extern void rb_insert_color(struct rb_node *, struct rb_root *);
-	node->__rb_parent_color = (unsigned long)parent;
+extern void rb_erase(struct rb_node *, struct rb_root *);
-	node->rb_left = node->rb_right = NULL;
+
-
+/* Find logical next and previous nodes in a tree */
-	*rb_link = node;
+extern struct rb_node *rb_next(const struct rb_node *);
-}
+extern struct rb_node *rb_prev(const struct rb_node *);
-
+extern struct rb_node *rb_first(const struct rb_root *);
-#define rb_entry_safe(ptr, type, member)                                                                                                                       \
+extern struct rb_node *rb_last(const struct rb_root *);
-	({                                                                                                                                                         \
+
-		typeof(ptr) ____ptr = (ptr);                                                                                                                           \
+/* Postorder iteration - always visit the parent after its children */
-		____ptr ? rb_entry(____ptr, type, member) : NULL;                                                                                                      \
+extern struct rb_node *rb_first_postorder(const struct rb_root *);
-	})
+extern struct rb_node *rb_next_postorder(const struct rb_node *);
-
+
-/*
+/* Fast replacement of a single node without remove/rebalance/add/rebalance */
- * Handy for checking that we are not deleting an entry that is
+extern void rb_replace_node(struct rb_node *victim, struct rb_node *new_node, struct rb_root *root);
- * already in a list, found in block/{blk-throttle,cfq-iosched}.c,
+
- * probably should be moved to lib/rbtree.c...
+static inline void rb_link_node(struct rb_node *node, struct rb_node *parent, struct rb_node **rb_link)
- */
+{
-static inline void rb_erase_init(struct rb_node *n, struct rb_root *root)
+	node->__rb_parent_color = (unsigned long)parent;
-{
+	node->rb_left = node->rb_right = NULL;
-	rb_erase(n, root);
+
-	RB_CLEAR_NODE(n);
+	*rb_link = node;
-}
+}
-
+
-
+#define rb_entry_safe(ptr, type, member)                                                                                                                       \
-/*
+	({                                                                                                                                                         \
- * Please note - only struct rb_augment_callbacks and the prototypes for
+		typeof(ptr) ____ptr = (ptr);                                                                                                                           \
- * rb_insert_augmented() and rb_erase_augmented() are intended to be public.
+		____ptr ? rb_entry(____ptr, type, member) : NULL;                                                                                                      \
- * The rest are implementation details you are not expected to depend on.
+	})
- *
+
- * See Documentation/rbtree.txt for documentation and samples.
+/*
- */
+ * Handy for checking that we are not deleting an entry that is
-
+ * already in a list, found in block/{blk-throttle,cfq-iosched}.c,
-struct rb_augment_callbacks {
+ * probably should be moved to lib/rbtree.c...
-	void (*propagate)(struct rb_node *node, struct rb_node *stop);
+ */
-	void (*copy)(struct rb_node *old_node, struct rb_node *new_node);
+static inline void rb_erase_init(struct rb_node *n, struct rb_root *root)
-	void (*rotate)(struct rb_node *old_node, struct rb_node *new_node);
+{
-};
+	rb_erase(n, root);
-
+	RB_CLEAR_NODE(n);
-extern void __rb_insert_augmented(struct rb_node *node, struct rb_root *root,
+}
-	void (*augment_rotate)(struct rb_node *old_node, struct rb_node *new_node));
+
-/*
+
- * Fixup the rbtree and update the augmented information when rebalancing.
+/*
- *
+ * Please note - only struct rb_augment_callbacks and the prototypes for
- * On insertion, the user must update the augmented information on the path
+ * rb_insert_augmented() and rb_erase_augmented() are intended to be public.
- * leading to the inserted node, then call rb_link_node() as usual and
+ * The rest are implementation details you are not expected to depend on.
- * rb_augment_inserted() instead of the usual rb_insert_color() call.
+ *
- * If rb_augment_inserted() rebalances the rbtree, it will callback into
+ * See Documentation/rbtree.txt for documentation and samples.
- * a user provided function to update the augmented information on the
+ */
- * affected subtrees.
+
- */
+struct rb_augment_callbacks {
-static inline void
+	void (*propagate)(struct rb_node *node, struct rb_node *stop);
-rb_insert_augmented(struct rb_node *node, struct rb_root *root,
+	void (*copy)(struct rb_node *old_node, struct rb_node *new_node);
-		    const struct rb_augment_callbacks *augment)
+	void (*rotate)(struct rb_node *old_node, struct rb_node *new_node);
-{
+};
-	__rb_insert_augmented(node, root, augment->rotate);
+
-}
+extern void __rb_insert_augmented(struct rb_node *node, struct rb_root *root,
-
+	void (*augment_rotate)(struct rb_node *old_node, struct rb_node *new_node));
-#define RB_DECLARE_CALLBACKS(rbstatic, rbname, rbstruct, rbfield,	\
+/*
-			     rbtype, rbaugmented, rbcompute)		\
+ * Fixup the rbtree and update the augmented information when rebalancing.
-static inline void							\
+ *
-rbname ## _propagate(struct rb_node *rb, struct rb_node *stop)		\
+ * On insertion, the user must update the augmented information on the path
-{									\
+ * leading to the inserted node, then call rb_link_node() as usual and
-	while (rb != stop) {						\
+ * rb_augment_inserted() instead of the usual rb_insert_color() call.
-		rbstruct *node = rb_entry(rb, rbstruct, rbfield);	\
+ * If rb_augment_inserted() rebalances the rbtree, it will callback into
-		rbtype augmented = rbcompute(node);			\
+ * a user provided function to update the augmented information on the
-		if (node->rbaugmented == augmented)			\
+ * affected subtrees.
-			break;						\
+ */
-		node->rbaugmented = augmented;				\
+static inline void
-		rb = rb_parent(&node->rbfield);				\
+rb_insert_augmented(struct rb_node *node, struct rb_root *root,
-	}								\
+		    const struct rb_augment_callbacks *augment)
-}									\
+{
-static inline void							\
+	__rb_insert_augmented(node, root, augment->rotate);
-rbname ## _copy(struct rb_node *rb_old, struct rb_node *rb_new)		\
+}
-{									\
+
-	rbstruct *old_node = rb_entry(rb_old, rbstruct, rbfield);		\
+#define RB_DECLARE_CALLBACKS(rbstatic, rbname, rbstruct, rbfield,	\
-	rbstruct *new_node = rb_entry(rb_new, rbstruct, rbfield);		\
+			     rbtype, rbaugmented, rbcompute)		\
-	new_node->rbaugmented = old_node->rbaugmented;				\
+static inline void							\
-}									\
+rbname ## _propagate(struct rb_node *rb, struct rb_node *stop)		\
-static void								\
+{									\
-rbname ## _rotate(struct rb_node *rb_old, struct rb_node *rb_new)	\
+	while (rb != stop) {						\
-{									\
+		rbstruct *node = rb_entry(rb, rbstruct, rbfield);	\
-	rbstruct *old_node = rb_entry(rb_old, rbstruct, rbfield);		\
+		rbtype augmented = rbcompute(node);			\
-	rbstruct *new_node = rb_entry(rb_new, rbstruct, rbfield);		\
+		if (node->rbaugmented == augmented)			\
-	new_node->rbaugmented = old_node->rbaugmented;				\
+			break;						\
-	old_node->rbaugmented = rbcompute(old_node);				\
+		node->rbaugmented = augmented;				\
-}									\
+		rb = rb_parent(&node->rbfield);				\
-rbstatic const struct rb_augment_callbacks rbname = {			\
+	}								\
-	rbname ## _propagate, rbname ## _copy, rbname ## _rotate	\
+}									\
-};
+static inline void							\
-
+rbname ## _copy(struct rb_node *rb_old, struct rb_node *rb_new)		\
-
+{									\
-#define	RB_RED		0
+	rbstruct *old_node = rb_entry(rb_old, rbstruct, rbfield);		\
-#define	RB_BLACK	1
+	rbstruct *new_node = rb_entry(rb_new, rbstruct, rbfield);		\
-
+	new_node->rbaugmented = old_node->rbaugmented;				\
-#define __rb_parent(pc)    ((struct rb_node *)(pc & ~3))
+}									\
-
+static void								\
-#define __rb_color(pc)     ((pc) & 1)
+rbname ## _rotate(struct rb_node *rb_old, struct rb_node *rb_new)	\
-#define __rb_is_black(pc)  __rb_color(pc)
+{									\
-#define __rb_is_red(pc)    (!__rb_color(pc))
+	rbstruct *old_node = rb_entry(rb_old, rbstruct, rbfield);		\
-#define rb_color(rb)       __rb_color((rb)->__rb_parent_color)
+	rbstruct *new_node = rb_entry(rb_new, rbstruct, rbfield);		\
-#define rb_is_red(rb)      __rb_is_red((rb)->__rb_parent_color)
+	new_node->rbaugmented = old_node->rbaugmented;				\
-#define rb_is_black(rb)    __rb_is_black((rb)->__rb_parent_color)
+	old_node->rbaugmented = rbcompute(old_node);				\
-
+}									\
-static inline void rb_set_parent(struct rb_node *rb, struct rb_node *p)
+rbstatic const struct rb_augment_callbacks rbname = {			\
-{
+	rbname ## _propagate, rbname ## _copy, rbname ## _rotate	\
-	rb->__rb_parent_color = rb_color(rb) | (unsigned long)p;
+};
-}
+
-
+
-static inline void rb_set_parent_color(struct rb_node *rb,
+#define	RB_RED		0
-				       struct rb_node *p, int color)
+#define	RB_BLACK	1
-{
+
-	rb->__rb_parent_color = (unsigned long)p | color;
+#define __rb_parent(pc)    ((struct rb_node *)(pc & ~3))
-}
+
-
+#define __rb_color(pc)     ((pc) & 1)
-static inline void
+#define __rb_is_black(pc)  __rb_color(pc)
-__rb_change_child(struct rb_node *old_node, struct rb_node *new_node,
+#define __rb_is_red(pc)    (!__rb_color(pc))
-		  struct rb_node *parent, struct rb_root *root)
+#define rb_color(rb)       __rb_color((rb)->__rb_parent_color)
-{
+#define rb_is_red(rb)      __rb_is_red((rb)->__rb_parent_color)
-	if (parent) {
+#define rb_is_black(rb)    __rb_is_black((rb)->__rb_parent_color)
-		if (parent->rb_left == old_node)
+
-			parent->rb_left = new_node;
+static inline void rb_set_parent(struct rb_node *rb, struct rb_node *p)
-		else
+{
-			parent->rb_right = new_node;
+	rb->__rb_parent_color = rb_color(rb) | (unsigned long)p;
-	} else
+}
-		root->rb_node = new_node;
+
-}
+static inline void rb_set_parent_color(struct rb_node *rb,
-
+				       struct rb_node *p, int color)
-extern void __rb_erase_color(struct rb_node *parent, struct rb_root *root,
+{
-	void (*augment_rotate)(struct rb_node *old_node, struct rb_node *new_node));
+	rb->__rb_parent_color = (unsigned long)p | color;
-
+}
-static inline struct rb_node *
+
-__rb_erase_augmented(struct rb_node *node, struct rb_root *root,
+static inline void
-		     const struct rb_augment_callbacks *augment)
+__rb_change_child(struct rb_node *old_node, struct rb_node *new_node,
-{
+		  struct rb_node *parent, struct rb_root *root)
-	struct rb_node *child = node->rb_right, *tmp = node->rb_left;
+{
-	struct rb_node *parent, *rebalance;
+	if (parent) {
-	unsigned long pc;
+		if (parent->rb_left == old_node)
-
+			parent->rb_left = new_node;
-	if (!tmp) {
+		else
-		/*
+			parent->rb_right = new_node;
-		 * Case 1: node to erase has no more than 1 child (easy!)
+	} else
-		 *
+		root->rb_node = new_node;
-		 * Note that if there is one child it must be red due to 5)
+}
-		 * and node must be black due to 4). We adjust colors locally
+
-		 * so as to bypass __rb_erase_color() later on.
+extern void __rb_erase_color(struct rb_node *parent, struct rb_root *root,
-		 */
+	void (*augment_rotate)(struct rb_node *old_node, struct rb_node *new_node));
-		pc = node->__rb_parent_color;
+
-		parent = __rb_parent(pc);
+static inline struct rb_node *
-		__rb_change_child(node, child, parent, root);
+__rb_erase_augmented(struct rb_node *node, struct rb_root *root,
-		if (child) {
+		     const struct rb_augment_callbacks *augment)
-			child->__rb_parent_color = pc;
+{
-			rebalance = NULL;
+	struct rb_node *child = node->rb_right, *tmp = node->rb_left;
-		} else
+	struct rb_node *parent, *rebalance;
-			rebalance = __rb_is_black(pc) ? parent : NULL;
+	unsigned long pc;
-		tmp = parent;
+
-	} else if (!child) {
+	if (!tmp) {
-		/* Still case 1, but this time the child is node->rb_left */
+		/*
-		tmp->__rb_parent_color = pc = node->__rb_parent_color;
+		 * Case 1: node to erase has no more than 1 child (easy!)
-		parent = __rb_parent(pc);
+		 *
-		__rb_change_child(node, tmp, parent, root);
+		 * Note that if there is one child it must be red due to 5)
-		rebalance = NULL;
+		 * and node must be black due to 4). We adjust colors locally
-		tmp = parent;
+		 * so as to bypass __rb_erase_color() later on.
-	} else {
+		 */
-		struct rb_node *successor = child, *child2;
+		pc = node->__rb_parent_color;
-		tmp = child->rb_left;
+		parent = __rb_parent(pc);
-		if (!tmp) {
+		__rb_change_child(node, child, parent, root);
-			/*
+		if (child) {
-			 * Case 2: node's successor is its right child
+			child->__rb_parent_color = pc;
-			 *
+			rebalance = NULL;
-			 *    (n)          (s)
+		} else
-			 *    / \          / \
+			rebalance = __rb_is_black(pc) ? parent : NULL;
-			 *  (x) (s)  ->  (x) (c)
+		tmp = parent;
-			 *        \
+	} else if (!child) {
-			 *        (c)
+		/* Still case 1, but this time the child is node->rb_left */
-			 */
+		tmp->__rb_parent_color = pc = node->__rb_parent_color;
-			parent = successor;
+		parent = __rb_parent(pc);
-			child2 = successor->rb_right;
+		__rb_change_child(node, tmp, parent, root);
-			augment->copy(node, successor);
+		rebalance = NULL;
-		} else {
+		tmp = parent;
-			/*
+	} else {
-			 * Case 3: node's successor is leftmost under
+		struct rb_node *successor = child, *child2;
-			 * node's right child subtree
+		tmp = child->rb_left;
-			 *
+		if (!tmp) {
-			 *    (n)          (s)
+			/*
-			 *    / \          / \
+			 * Case 2: node's successor is its right child
-			 *  (x) (y)  ->  (x) (y)
+			 *
-			 *      /            /
+			 *    (n)          (s)
-			 *    (p)          (p)
+			 *    / \          / \
-			 *    /            /
+			 *  (x) (s)  ->  (x) (c)
-			 *  (s)          (c)
+			 *        \
-			 *    \
+			 *        (c)
-			 *    (c)
+			 */
-			 */
+			parent = successor;
-			do {
+			child2 = successor->rb_right;
-				parent = successor;
+			augment->copy(node, successor);
-				successor = tmp;
+		} else {
-				tmp = tmp->rb_left;
+			/*
-			} while (tmp);
+			 * Case 3: node's successor is leftmost under
-			parent->rb_left = child2 = successor->rb_right;
+			 * node's right child subtree
-			successor->rb_right = child;
+			 *
-			rb_set_parent(child, successor);
+			 *    (n)          (s)
-			augment->copy(node, successor);
+			 *    / \          / \
-			augment->propagate(parent, successor);
+			 *  (x) (y)  ->  (x) (y)
-		}
+			 *      /            /
-
+			 *    (p)          (p)
-		successor->rb_left = tmp = node->rb_left;
+			 *    /            /
-		rb_set_parent(tmp, successor);
+			 *  (s)          (c)
-
+			 *    \
-		pc = node->__rb_parent_color;
+			 *    (c)
-		tmp = __rb_parent(pc);
+			 */
-		__rb_change_child(node, successor, tmp, root);
+			do {
-		if (child2) {
+				parent = successor;
-			successor->__rb_parent_color = pc;
+				successor = tmp;
-			rb_set_parent_color(child2, parent, RB_BLACK);
+				tmp = tmp->rb_left;
-			rebalance = NULL;
+			} while (tmp);
-		} else {
+			parent->rb_left = child2 = successor->rb_right;
-			unsigned long pc2 = successor->__rb_parent_color;
+			successor->rb_right = child;
-			successor->__rb_parent_color = pc;
+			rb_set_parent(child, successor);
-			rebalance = __rb_is_black(pc2) ? parent : NULL;
+			augment->copy(node, successor);
-		}
+			augment->propagate(parent, successor);
-		tmp = successor;
+		}
-	}
+
-
+		successor->rb_left = tmp = node->rb_left;
-	augment->propagate(tmp, NULL);
+		rb_set_parent(tmp, successor);
-	return rebalance;
+
-}
+		pc = node->__rb_parent_color;
-
+		tmp = __rb_parent(pc);
-static inline void
+		__rb_change_child(node, successor, tmp, root);
-rb_erase_augmented(struct rb_node *node, struct rb_root *root,
+		if (child2) {
-		   const struct rb_augment_callbacks *augment)
+			successor->__rb_parent_color = pc;
-{
+			rb_set_parent_color(child2, parent, RB_BLACK);
-	struct rb_node *rebalance = __rb_erase_augmented(node, root, augment);
+			rebalance = NULL;
-	if (rebalance)
+		} else {
-		__rb_erase_color(rebalance, root, augment->rotate);
+			unsigned long pc2 = successor->__rb_parent_color;
-}
+			successor->__rb_parent_color = pc;
-
+			rebalance = __rb_is_black(pc2) ? parent : NULL;
-#endif /* _GENERIC_RBTREE_H */
+		}
-
+		tmp = successor;
+	}
+
+	augment->propagate(tmp, NULL);
+	return rebalance;
+}
+
+static inline void
+rb_erase_augmented(struct rb_node *node, struct rb_root *root,
+		   const struct rb_augment_callbacks *augment)
+{
+	struct rb_node *rebalance = __rb_erase_augmented(node, root, augment);
+	if (rebalance)
+		__rb_erase_color(rebalance, root, augment->rotate);
+}
+
+#endif /* _GENERIC_RBTREE_H */
+

src/include/stringutil.h

@@ -0,0 +1,42 @@
+/*************************************************************************
+ *
+ * Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+ *
+ * smartdns is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * smartdns is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _GENERIC_STRING_UITL_H
+#define _GENERIC_STRING_UITL_H
+
+#include <stddef.h>
+#include <string.h>
+
+static inline char *safe_strncpy(char *dest, const char *src, size_t n) 
+{
+#if __GNUC__  > 7
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wstringop-truncation"
+#endif
+	char *ret = strncpy(dest, src, n - 1);
+    if (n > 0) {
+	    dest[n - 1] = '\0';
+    }
+#if __GNUC__  > 7
+#pragma GCC diagnostic pop
+#endif
+	return ret;
+}
+
+
+#endif

src/lib/bitops.c

@@ -1,3 +1,20 @@
+/*************************************************************************
+ *
+ * Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+ *
+ * smartdns is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * smartdns is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 
 #include "bitmap.h"
 #include "bitops.h"

src/lib/conf.c

@@ -1,292 +1,311 @@
-#include "conf.h"
+/*************************************************************************
-#include <getopt.h>
+ *
-#include <stdio.h>
+ * Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
-#include <stdlib.h>
+ *
-#include <string.h>
+ * smartdns is free software: you can redistribute it and/or modify
-#include <unistd.h>
+ * it under the terms of the GNU General Public License as published by
-
+ * the Free Software Foundation, either version 3 of the License, or
-static const char *currrent_conf_file = NULL;
+ * (at your option) any later version.
-
+ *
-const char *conf_get_conf_file(void)
+ * smartdns is distributed in the hope that it will be useful,
-{
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
-	return currrent_conf_file;
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-}
+ * GNU General Public License for more details.
-
+ *
-int conf_custom(const char *item, void *data, int argc, char *argv[])
+ * You should have received a copy of the GNU General Public License
-{
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
-	struct config_item_custom *item_custom = data;
+ */
-	return item_custom->custom_func(item_custom->custom_data, argc, argv);
+
-}
+#include "conf.h"
-
+#include <getopt.h>
-int conf_int(const char *item, void *data, int argc, char *argv[])
+#include <stdio.h>
-{
+#include <stdlib.h>
-	struct config_item_int *item_int = data;
+#include <string.h>
-	int value = 0;
+#include <unistd.h>
-	if (argc < 2) {
+
-		return -1;
+static const char *currrent_conf_file = NULL;
-	}
+
-
+const char *conf_get_conf_file(void)
-	value = atoi(argv[1]);
+{
-
+	return currrent_conf_file;
-	if (value < item_int->min) {
+}
-		value = item_int->min;
+
-	} else if (value > item_int->max) {
+int conf_custom(const char *item, void *data, int argc, char *argv[])
-		value = item_int->max;
+{
-	}
+	struct config_item_custom *item_custom = data;
-
+	return item_custom->custom_func(item_custom->custom_data, argc, argv);
-	*(item_int->data) = value;
+}
-
+
-	return 0;
+int conf_int(const char *item, void *data, int argc, char *argv[])
-}
+{
-
+	struct config_item_int *item_int = data;
-int conf_string(const char *item, void *data, int argc, char *argv[])
+	int value = 0;
-{
+	if (argc < 2) {
-	struct config_item_string *item_string = data;
+		return -1;
-
+	}
-	if (argc < 2) {
+
-		return -1;
+	value = atoi(argv[1]);
-	}
+
-
+	if (value < item_int->min) {
-	strncpy(item_string->data, argv[1], item_string->size);
+		value = item_int->min;
-
+	} else if (value > item_int->max) {
-	return 0;
+		value = item_int->max;
-}
+	}
-
+
-int conf_yesno(const char *item, void *data, int argc, char *argv[])
+	*(item_int->data) = value;
-{
+
-	struct config_item_yesno *item_yesno = data;
+	return 0;
-	int yes = 0;
+}
-
+
-	if (argc < 2) {
+int conf_string(const char *item, void *data, int argc, char *argv[])
-		return -1;
+{
-	}
+	struct config_item_string *item_string = data;
-
+
-	char *value = argv[1];
+	if (argc < 2) {
-	if (strncmp("auto", value, sizeof("auto")) == 0 || strncmp("AUTO", value, sizeof("AUTO")) == 0) {
+		return -1;
-		return 0;
+	}
-	}
+
-
+	strncpy(item_string->data, argv[1], item_string->size);
-	if (strncmp("yes", value, sizeof("yes")) == 0 || strncmp("YES", value, sizeof("YES")) == 0) {
+
-		yes = 1;
+	return 0;
-	} else if (strncmp("no", value, sizeof("no")) == 0 || strncmp("NO", value, sizeof("NO")) == 0) {
+}
-		yes = 0;
+
-	}
+int conf_yesno(const char *item, void *data, int argc, char *argv[])
-
+{
-	*(item_yesno->data) = yes;
+	struct config_item_yesno *item_yesno = data;
-
+	int yes = 0;
-	return 0;
+
-}
+	if (argc < 2) {
-
+		return -1;
-int conf_size(const char *item, void *data, int argc, char *argv[])
+	}
-{
+
-	/* read dns cache size */
+	char *value = argv[1];
-	int base = 1;
+	if (strncmp("auto", value, sizeof("auto")) == 0 || strncmp("AUTO", value, sizeof("AUTO")) == 0) {
-	size_t size = 0;
+		return 0;
-	int num = 0;
+	}
-	struct config_item_size *item_size = data;
+
-	char *value = argv[1];
+	if (strncmp("yes", value, sizeof("yes")) == 0 || strncmp("YES", value, sizeof("YES")) == 0) {
-
+		yes = 1;
-	if (strstr(value, "k") || strstr(value, "K")) {
+	} else if (strncmp("no", value, sizeof("no")) == 0 || strncmp("NO", value, sizeof("NO")) == 0) {
-		base = 1024;
+		yes = 0;
-	} else if (strstr(value, "m") || strstr(value, "M")) {
+	}
-		base = 1024 * 1024;
+
-	} else if (strstr(value, "g") || strstr(value, "G")) {
+	*(item_yesno->data) = yes;
-		base = 1024 * 1024 * 1024;
+
-	}
+	return 0;
-
+}
-	num = atoi(value);
+
-	if (num < 0) {
+int conf_size(const char *item, void *data, int argc, char *argv[])
-		return -1;
+{
-	}
+	/* read dns cache size */
-
+	int base = 1;
-	size = num * base;
+	size_t size = 0;
-	if (size > item_size->max) {
+	int num = 0;
-		size = item_size->max;
+	struct config_item_size *item_size = data;
-	} else if (size < item_size->min) {
+	char *value = argv[1];
-		size = item_size->min;
+
-	}
+	if (strstr(value, "k") || strstr(value, "K")) {
-
+		base = 1024;
-	*(item_size->data) = size;
+	} else if (strstr(value, "m") || strstr(value, "M")) {
-
+		base = 1024 * 1024;
-	return 0;
+	} else if (strstr(value, "g") || strstr(value, "G")) {
-}
+		base = 1024 * 1024 * 1024;
-
+	}
-void conf_getopt_reset(void)
+
-{
+	num = atoi(value);
-	static struct option long_options[] = {{"-", 0, 0, 0}, {0, 0, 0, 0}};
+	if (num < 0) {
-	int argc = 2;
+		return -1;
-	char *argv[3] = {"reset", "", 0};
+	}
-
+
-	optind = 1;
+	size = num * base;
-	opterr = 0;
+	if (size > item_size->max) {
-	getopt_long(argc, argv, "", long_options, NULL);
+		size = item_size->max;
-	optind = 1;
+	} else if (size < item_size->min) {
-	opterr = 0;
+		size = item_size->min;
-}
+	}
-
+
-int conf_parse_args(char *key, char *value, int *argc, char **argv)
+	*(item_size->data) = size;
-{
+
-	char *start = NULL;
+	return 0;
-	char *ptr = value;
+}
-	int count = 0;
+
-	int sep_flag = ' ';
+void conf_getopt_reset(void)
-
+{
-	argv[0] = key;
+	static struct option long_options[] = {{"-", 0, 0, 0}, {0, 0, 0, 0}};
-	count++;
+	int argc = 2;
-
+	char *argv[3] = {"reset", "", 0};
-	while (*ptr != '\0') {
+
-		if (*ptr == '\\') {
+	optind = 0;
-			char *tmp = ptr + 1;
+	opterr = 0;
-			while (*tmp != '\0') {
+	optopt = 0;
-				*(tmp - 1) = *tmp;
+	getopt_long(argc, argv, "", long_options, NULL);
-				tmp++;
+	optind = 0;
-			}
+	opterr = 0;
-			ptr++;
+	optopt = 0;
-			continue;
+}
-		}
+
-
+int conf_parse_args(char *key, char *value, int *argc, char **argv)
-		if (*ptr == '"' && start == NULL) {
+{
-			sep_flag = '"';
+	char *start = NULL;
-			start = NULL;
+	char *ptr = value;
-		}
+	int count = 0;
-
+	int sep_flag = ' ';
-		if (*ptr != sep_flag && start == NULL) {
+
-			start = ptr;
+	argv[0] = key;
-			ptr++;
+	count++;
-			continue;
+
-		}
+	while (*ptr != '\0') {
-
+		if (*ptr == '\\') {
-		if (*ptr == sep_flag && start == NULL) {
+			char *tmp = ptr + 1;
-			ptr++;
+			while (*tmp != '\0') {
-			continue;
+				*(tmp - 1) = *tmp;
-		}
+				tmp++;
-
+			}
-		if (*ptr == sep_flag && start) {
+			ptr++;
-			argv[count] = start;
+			continue;
-			*ptr = '\0';
+		}
-			ptr++;
+
-			start = ptr;
+		if (*ptr == '"' && start == NULL) {
-			count++;
+			sep_flag = '"';
-			sep_flag = ' ';
+			start = NULL;
-			start = NULL;
+		}
-			continue;
+
-		}
+		if (*ptr != sep_flag && start == NULL) {
-
+			start = ptr;
-		ptr++;
+			ptr++;
-	}
+			continue;
-
+		}
-	if (start != ptr && start) {
+
-		argv[count] = start;
+		if (*ptr == sep_flag && start == NULL) {
-		count++;
+			ptr++;
-	}
+			continue;
-
+		}
-	*argc = count;
+
-	argv[count + 1] = 0;
+		if (*ptr == sep_flag && start) {
-
+			argv[count] = start;
-	return 0;
+			*ptr = '\0';
-}
+			ptr++;
-
+			count++;
-void load_exit(void)
+			sep_flag = ' ';
-{
+			start = NULL;
-	return;
+			continue;
-}
+		}
-
+
-int load_conf_printf(const char *file, int lineno, int ret)
+		ptr++;
-{
+	}
-	if (ret != CONF_RET_OK) {
+
-		printf("process config file '%s' failed at line %d.", file, lineno);
+	if (start != ptr && start) {
-		if (ret == CONF_RET_ERR || ret == CONF_RET_NOENT) {
+		argv[count] = start;
-			return -1;
+		count++;
-		}
+	}
-
+
-		return 0;
+	*argc = count;
-	}
+	argv[count] = 0;
-
+
-	return 0;
+	return 0;
-}
+}
-
+
-int load_conf_file(const char *file, struct config_item *items, conf_error_handler handler)
+void load_exit(void)
-{
+{
-	FILE *fp = NULL;
+	return;
-	char line[MAX_LINE_LEN];
+}
-	char key[MAX_KEY_LEN];
+
-	char value[MAX_LINE_LEN];
+int load_conf_printf(const char *file, int lineno, int ret)
-	int filed_num = 0;
+{
-	int i;
+	if (ret != CONF_RET_OK) {
-	int argc;
+		printf("process config file '%s' failed at line %d.", file, lineno);
-	char *argv[1024];
+		if (ret == CONF_RET_ERR || ret == CONF_RET_NOENT) {
-	int ret = 0;
+			return -1;
-	int call_ret = 0;
+		}
-	int line_no = 0;
+
-
+		return 0;
-	if (handler == NULL) {
+	}
-		handler = load_conf_printf;
+
-	}
+	return 0;
-
+}
-	fp = fopen(file, "r");
+
-	if (fp == NULL) {
+int load_conf_file(const char *file, struct config_item *items, conf_error_handler handler)
-		return -1;
+{
-	}
+	FILE *fp = NULL;
-
+	char line[MAX_LINE_LEN];
-	line_no = 0;
+	char key[MAX_KEY_LEN];
-	while (fgets(line, MAX_LINE_LEN, fp)) {
+	char value[MAX_LINE_LEN];
-		line_no++;
+	int filed_num = 0;
-		filed_num = sscanf(line, "%63s %1023[^\r\n]s", key, value);
+	int i;
-		if (filed_num <= 0) {
+	int argc;
-			continue;
+	char *argv[1024];
-		}
+	int ret = 0;
-
+	int call_ret = 0;
-		/* comment, skip */
+	int line_no = 0;
-		if (key[0] == '#') {
+
-			continue;
+	if (handler == NULL) {
-		}
+		handler = load_conf_printf;
-
+	}
-		/* if field format is not key = value, error */
+
-		if (filed_num != 2) {
+	fp = fopen(file, "r");
-			goto errout;
+	if (fp == NULL) {
-		}
+		return -1;
-
+	}
-		for (i = 0;; i++) {
+
-			if (items[i].item == NULL) {
+	line_no = 0;
-				handler(file, line_no, CONF_RET_NOENT);
+	while (fgets(line, MAX_LINE_LEN, fp)) {
-				break;
+		line_no++;
-			}
+		filed_num = sscanf(line, "%63s %1023[^\r\n]s", key, value);
-
+		if (filed_num <= 0) {
-			if (strncmp(items[i].item, key, MAX_KEY_LEN) != 0) {
+			continue;
-				continue;
+		}
-			}
+
-
+		/* comment, skip */
-			if (conf_parse_args(key, value, &argc, argv) != 0) {
+		if (key[0] == '#') {
-				continue;
+			continue;
-			}
+		}
-
+
-			conf_getopt_reset();
+		/* if field format is not key = value, error */
-			/* call item function */
+		if (filed_num != 2) {
-			currrent_conf_file = file;
+			goto errout;
-			call_ret = items[i].item_func(items[i].item, items[i].data, argc, argv);
+		}
-			ret = handler(file, line_no, call_ret);
+
-			if (ret != 0) {
+		for (i = 0;; i++) {
-				conf_getopt_reset();
+			if (items[i].item == NULL) {
-				goto errout;
+				handler(file, line_no, CONF_RET_NOENT);
-			}
+				break;
-
+			}
-			conf_getopt_reset();
+
-
+			if (strncmp(items[i].item, key, MAX_KEY_LEN) != 0) {
-			break;
+				continue;
-		}
+			}
-	}
+
-
+			if (conf_parse_args(key, value, &argc, argv) != 0) {
-	fclose(fp);
+				continue;
-
+			}
-	return 0;
+
-errout:
+			conf_getopt_reset();
-	if (fp) {
+			/* call item function */
-		fclose(fp);
+			currrent_conf_file = file;
-	}
+			call_ret = items[i].item_func(items[i].item, items[i].data, argc, argv);
-	return -1;
+			ret = handler(file, line_no, call_ret);
-}
+			if (ret != 0) {
-
+				conf_getopt_reset();
-int load_conf(const char *file, struct config_item items[], conf_error_handler handler)
+				goto errout;
-{
+			}
-	return load_conf_file(file, items, handler);
+
-}
+			conf_getopt_reset();
+
+			break;
+		}
+	}
+
+	fclose(fp);
+
+	return 0;
+errout:
+	if (fp) {
+		fclose(fp);
+	}
+	return -1;
+}
+
+int load_conf(const char *file, struct config_item items[], conf_error_handler handler)
+{
+	return load_conf_file(file, items, handler);
+}

src/lib/stringutil.c

@@ -0,0 +1,17 @@
+/*************************************************************************
+ *
+ * Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+ *
+ * smartdns is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * smartdns is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */

src/smartdns.c

@@ -1,422 +1,456 @@
-/*************************************************************************
+/*************************************************************************
- *
+ *
- * Copyright (C) 2018 Ruilin Peng (Nick) <pymumu@gmail.com>.
+ * Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
- *
+ *
- * smartdns is free software: you can redistribute it and/or modify
+ * smartdns is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
+ * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
+ * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
+ * (at your option) any later version.
- *
+ *
- * smartdns is distributed in the hope that it will be useful,
+ * smartdns is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * GNU General Public License for more details.
- *
+ *
- * You should have received a copy of the GNU General Public License
+ * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
+ */
-
+
-#define _GNU_SOURCE
+#define _GNU_SOURCE
-#include "art.h"
+#include "art.h"
-#include "atomic.h"
+#include "atomic.h"
-#include "dns_client.h"
+#include "dns_client.h"
-#include "dns_conf.h"
+#include "dns_conf.h"
-#include "dns_server.h"
+#include "dns_server.h"
-#include "fast_ping.h"
+#include "fast_ping.h"
-#include "hashtable.h"
+#include "hashtable.h"
-#include "list.h"
+#include "list.h"
-#include "rbtree.h"
+#include "rbtree.h"
-#include "tlog.h"
+#include "tlog.h"
-#include "util.h"
+#include "util.h"
-#include <errno.h>
+#include <errno.h>
-#include <fcntl.h>
+#include <fcntl.h>
-#include <libgen.h>
+#include <libgen.h>
-#include <openssl/err.h>
+#include <openssl/err.h>
-#include <openssl/ssl.h>
+#include <openssl/ssl.h>
-#include <signal.h>
+#include <signal.h>
-#include <stdio.h>
+#include <stdio.h>
-#include <stdlib.h>
+#include <stdlib.h>
-#include <string.h>
+#include <string.h>
-#include <sys/stat.h>
+#include <sys/stat.h>
-#include <sys/types.h>
+#include <sys/types.h>
-#include <ucontext.h>
+#include <ucontext.h>
-
+
-#define RESOLVE_FILE "/etc/resolv.conf"
+#define RESOLVE_FILE "/etc/resolv.conf"
-#define MAX_LINE_LEN 1024
+#define MAX_LINE_LEN 1024
-#define MAX_KEY_LEN 64
+#define MAX_KEY_LEN 64
-#define SMARTDNS_PID_FILE "/var/run/smartdns.pid"
+#define SMARTDNS_PID_FILE "/var/run/smartdns.pid"
-#define TMP_BUFF_LEN_32 32
+#define TMP_BUFF_LEN_32 32
-
+
-static int verbose_screen;
+static int verbose_screen;
-
+
-static void _help(void)
+static void _help(void)
-{
+{
-	/* clang-format off */
+	/* clang-format off */
-	char *help = ""
+	char *help = ""
-		"Usage: smartdns [OPTION]...\n"
+		"Usage: smartdns [OPTION]...\n"
-		"Start smartdns server.\n"
+		"Start smartdns server.\n"
-		"  -f            run forground.\n"
+		"  -f            run forground.\n"
-		"  -c [conf]     config file.\n"
+		"  -c [conf]     config file.\n"
-		"  -p [pid]      pid file path\n"
+		"  -p [pid]      pid file path\n"
-		"  -S            ignore segment fault signal.\n"
+		"  -S            ignore segment fault signal.\n"
-		"  -v            verbose screent.\n"
+		"  -x            verbose screen.\n"
-		"  -h            show this help message.\n"
+		"  -v            dispaly version.\n"
-
+		"  -h            show this help message.\n"
-		"Online help: http://pymumu.github.io/smartdns\n"
+
-		"Copyright (C) Nick Peng <pymumu@gmail.com>\n"
+		"Online help: http://pymumu.github.io/smartdns\n"
-		;
+		"Copyright (C) Nick Peng <pymumu@gmail.com>\n"
-	/* clang-format on */
+		;
-	printf("%s", help);
+	/* clang-format on */
-}
+	printf("%s", help);
-
+}
-static int _smartdns_load_from_resolv(void)
+
-{
+static void _show_version(void)
-	FILE *fp = NULL;
+{
-	char line[MAX_LINE_LEN];
+	char str_ver[256] = {0};
-	char key[MAX_KEY_LEN];
+#ifdef SMARTDNS_VERION
-	char value[MAX_LINE_LEN];
+	const char *ver = SMARTDNS_VERION;
-	char ns_ip[DNS_MAX_IPLEN];
+	snprintf(str_ver, sizeof(str_ver), "%s", ver);
-	int port = PORT_NOT_DEFINED;
+#else
-	int ret = -1;
+	struct tm tm;
-
+	get_compiled_time(&tm);
-	int filed_num = 0;
+	snprintf(str_ver, sizeof(str_ver), "1.%.4d%.2d%.2d-%.2d%.2d", tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday,
-	int line_num = 0;
+			 tm.tm_hour, tm.tm_min);
-
+#endif
-	fp = fopen(RESOLVE_FILE, "r");
+	printf("smartdns %s\n", str_ver);
-	if (fp == NULL) {
+}
-		tlog(TLOG_ERROR, "open %s failed, %s", RESOLVE_FILE, strerror(errno));
+
-		return -1;
+static int _smartdns_load_from_resolv(void)
-	}
+{
-
+	FILE *fp = NULL;
-	while (fgets(line, MAX_LINE_LEN, fp)) {
+	char line[MAX_LINE_LEN];
-		line_num++;
+	char key[MAX_KEY_LEN];
-		filed_num = sscanf(line, "%63s %1023[^\r\n]s", key, value);
+	char value[MAX_LINE_LEN];
-
+	char ns_ip[DNS_MAX_IPLEN];
-		if (filed_num != 2) {
+	int port = PORT_NOT_DEFINED;
-			continue;
+	int ret = -1;
-		}
+
-
+	int filed_num = 0;
-		if (strncmp(key, "nameserver", MAX_KEY_LEN) != 0) {
+	int line_num = 0;
-			continue;
+
-		}
+	fp = fopen(RESOLVE_FILE, "r");
-
+	if (fp == NULL) {
-		if (parse_ip(value, ns_ip, &port) != 0) {
+		tlog(TLOG_ERROR, "open %s failed, %s", RESOLVE_FILE, strerror(errno));
-			continue;
+		return -1;
-		}
+	}
-
+
-		if (port == PORT_NOT_DEFINED) {
+	while (fgets(line, MAX_LINE_LEN, fp)) {
-			port = DEFAULT_DNS_PORT;
+		line_num++;
-		}
+		filed_num = sscanf(line, "%63s %1023[^\r\n]s", key, value);
-
+
-		strncpy(dns_conf_servers[dns_conf_server_num].server, ns_ip, DNS_MAX_IPLEN);
+		if (filed_num != 2) {
-		dns_conf_servers[dns_conf_server_num].port = port;
+			continue;
-		dns_conf_servers[dns_conf_server_num].type = DNS_SERVER_UDP;
+		}
-		dns_conf_server_num++;
+
-		ret = 0;
+		if (strncmp(key, "nameserver", MAX_KEY_LEN) != 0) {
-	}
+			continue;
-
+		}
-	fclose(fp);
+
-
+		if (parse_ip(value, ns_ip, &port) != 0) {
-	return ret;
+			continue;
-}
+		}
-
+
-static int _smartdns_add_servers(void)
+		if (port == PORT_NOT_DEFINED) {
-{
+			port = DEFAULT_DNS_PORT;
-	int i = 0;
+		}
-	int j = 0;
+
-	int ret = 0;
+		safe_strncpy(dns_conf_servers[dns_conf_server_num].server, ns_ip, DNS_MAX_IPLEN);
-	struct dns_server_groups *group = NULL;
+		dns_conf_servers[dns_conf_server_num].port = port;
-	struct dns_servers *server = NULL;
+		dns_conf_servers[dns_conf_server_num].type = DNS_SERVER_UDP;
-	struct client_dns_server_flags flags;
+		dns_conf_server_num++;
-
+		ret = 0;
-	for (i = 0; i < dns_conf_server_num; i++) {
+	}
-		memset(&flags, 0, sizeof(flags));
+
-		switch (dns_conf_servers[i].type) {
+	fclose(fp);
-		case DNS_SERVER_UDP: {
+
-			struct client_dns_server_flag_udp *flag_udp = &flags.udp;
+	return ret;
-			flag_udp->ttl = dns_conf_servers[i].ttl;
+}
-		} break;
+
-		case DNS_SERVER_HTTPS: {
+static int _smartdns_add_servers(void)
-			struct client_dns_server_flag_https *flag_http = &flags.https;
+{
-			flag_http->spi_len = dns_client_spki_decode(dns_conf_servers[i].spki, (unsigned char *)flag_http->spki);
+	int i = 0;
-			strncpy(flag_http->host, dns_conf_servers[i].hostname, sizeof(flag_http->host));
+	int j = 0;
-			strncpy(flag_http->path, dns_conf_servers[i].path, sizeof(flag_http->path));
+	int ret = 0;
-		} break;
+	struct dns_server_groups *group = NULL;
-		case DNS_SERVER_TLS: {
+	struct dns_servers *server = NULL;
-			struct client_dns_server_flag_tls *flag_tls = &flags.tls;
+	struct client_dns_server_flags flags;
-			flag_tls->spi_len = dns_client_spki_decode(dns_conf_servers[i].spki, (unsigned char *)flag_tls->spki);
+
-			strncpy(flag_tls->host, dns_conf_servers[i].hostname, sizeof(flag_tls->host));
+	for (i = 0; i < dns_conf_server_num; i++) {
-		} break;
+		memset(&flags, 0, sizeof(flags));
-			break;
+		switch (dns_conf_servers[i].type) {
-		case DNS_SERVER_TCP:
+		case DNS_SERVER_UDP: {
-			break;
+			struct client_dns_server_flag_udp *flag_udp = &flags.udp;
-		default:
+			flag_udp->ttl = dns_conf_servers[i].ttl;
-			return -1;
+		} break;
-			break;
+		case DNS_SERVER_HTTPS: {
-		}
+			struct client_dns_server_flag_https *flag_http = &flags.https;
-
+			flag_http->spi_len = dns_client_spki_decode(dns_conf_servers[i].spki, (unsigned char *)flag_http->spki);
-		flags.type = dns_conf_servers[i].type;
+			safe_strncpy(flag_http->hostname, dns_conf_servers[i].hostname, sizeof(flag_http->hostname));
-		flags.server_flag = dns_conf_servers[i].server_flag;
+			safe_strncpy(flag_http->path, dns_conf_servers[i].path, sizeof(flag_http->path));
-		flags.result_flag = dns_conf_servers[i].result_flag;
+			safe_strncpy(flag_http->httphost, dns_conf_servers[i].httphost, sizeof(flag_http->httphost));
-		ret = dns_client_add_server(dns_conf_servers[i].server, dns_conf_servers[i].port, dns_conf_servers[i].type, &flags);
+			safe_strncpy(flag_http->tls_host_verify, dns_conf_servers[i].tls_host_verify,
-		if (ret != 0) {
+						 sizeof(flag_http->tls_host_verify));
-			tlog(TLOG_ERROR, "add server failed, %s:%d", dns_conf_servers[i].server, dns_conf_servers[i].port);
+			flag_http->skip_check_cert = dns_conf_servers[i].skip_check_cert;
-			return -1;
+		} break;
-		}
+		case DNS_SERVER_TLS: {
-	}
+			struct client_dns_server_flag_tls *flag_tls = &flags.tls;
-
+			flag_tls->spi_len = dns_client_spki_decode(dns_conf_servers[i].spki, (unsigned char *)flag_tls->spki);
-	hash_for_each(dns_group_table.group, i, group, node)
+			safe_strncpy(flag_tls->hostname, dns_conf_servers[i].hostname, sizeof(flag_tls->hostname));
-	{
+			safe_strncpy(flag_tls->tls_host_verify, dns_conf_servers[i].tls_host_verify,
-		ret = dns_client_add_group(group->group_name);
+						 sizeof(flag_tls->tls_host_verify));
-		if (ret != 0) {
+			flag_tls->skip_check_cert = dns_conf_servers[i].skip_check_cert;
-			tlog(TLOG_ERROR, "add group failed, %s", group->group_name);
+
-			return -1;
+		} break;
-		}
+		case DNS_SERVER_TCP:
-
+			break;
-		for (j = 0; j < group->server_num; j++) {
+		default:
-			server = group->servers[j];
+			return -1;
-			if (server == NULL) {
+			break;
-				continue;
+		}
-			}
+
-			ret = dns_client_add_to_group(group->group_name, server->server, server->port, server->type);
+		flags.type = dns_conf_servers[i].type;
-			if (ret != 0) {
+		flags.server_flag = dns_conf_servers[i].server_flag;
-				tlog(TLOG_ERROR, "add server %s to group %s failed", server->server, group->group_name);
+		flags.result_flag = dns_conf_servers[i].result_flag;
-				return -1;
+		ret = dns_client_add_server(dns_conf_servers[i].server, dns_conf_servers[i].port, dns_conf_servers[i].type,
-			}
+									&flags);
-		}
+		if (ret != 0) {
-	}
+			tlog(TLOG_ERROR, "add server failed, %s:%d", dns_conf_servers[i].server, dns_conf_servers[i].port);
-
+			return -1;
-	return 0;
+		}
-}
+	}
-
+
-static int _smartdns_set_ecs_ip(void)
+	hash_for_each(dns_group_table.group, i, group, node)
-{
+	{
-	int ret = 0;
+		ret = dns_client_add_group(group->group_name);
-	if (dns_conf_ipv4_ecs.enable) {
+		if (ret != 0) {
-		ret |= dns_client_set_ecs(dns_conf_ipv4_ecs.ip, dns_conf_ipv4_ecs.subnet);
+			tlog(TLOG_ERROR, "add group failed, %s", group->group_name);
-	}
+			return -1;
-
+		}
-	if (dns_conf_ipv6_ecs.enable) {
+
-		ret |= dns_client_set_ecs(dns_conf_ipv6_ecs.ip, dns_conf_ipv6_ecs.subnet);
+		for (j = 0; j < group->server_num; j++) {
-	}
+			server = group->servers[j];
-
+			if (server == NULL) {
-	return ret;
+				continue;
-}
+			}
-
+			ret = dns_client_add_to_group(group->group_name, server->server, server->port, server->type);
-static int _smartdns_init_ssl(void)
+			if (ret != 0) {
-{
+				tlog(TLOG_ERROR, "add server %s to group %s failed", server->server, group->group_name);
-	SSL_load_error_strings();
+				return -1;
-	SSL_library_init();
+			}
-	OpenSSL_add_all_algorithms();
+		}
-	SSL_CRYPTO_thread_setup();
+	}
-
+
-	return 0;
+	return 0;
-}
+}
-
+
-static int _smartdns_destroy_ssl(void)
+static int _smartdns_set_ecs_ip(void)
-{
+{
-	SSL_CRYPTO_thread_cleanup();
+	int ret = 0;
-	ERR_free_strings();
+	if (dns_conf_ipv4_ecs.enable) {
-	EVP_cleanup();
+		ret |= dns_client_set_ecs(dns_conf_ipv4_ecs.ip, dns_conf_ipv4_ecs.subnet);
-
+	}
-	return 0;
+
-}
+	if (dns_conf_ipv6_ecs.enable) {
-
+		ret |= dns_client_set_ecs(dns_conf_ipv6_ecs.ip, dns_conf_ipv6_ecs.subnet);
-static int _smartdns_init(void)
+	}
-{
+
-	int ret;
+	return ret;
-	char *logfile = SMARTDNS_LOG_FILE;
+}
-
+
-	if (dns_conf_log_file[0] != 0) {
+static int _smartdns_init_ssl(void)
-		logfile = dns_conf_log_file;
+{
-	}
+#if OPENSSL_API_COMPAT < 0x10100000L
-
+	SSL_load_error_strings();
-	ret = tlog_init(logfile, dns_conf_log_size, dns_conf_log_num, 1, 0, 0);
+	SSL_library_init();
-	if (ret != 0) {
+	OpenSSL_add_all_algorithms();
-		tlog(TLOG_ERROR, "start tlog failed.\n");
+	SSL_CRYPTO_thread_setup();
-		goto errout;
+#endif
-	}
+	return 0;
-
+}
-	tlog_setlogscreen(verbose_screen);
+
-	tlog_setlevel(dns_conf_log_level);
+static int _smartdns_destroy_ssl(void)
-
+{
-	tlog(TLOG_NOTICE, "smartdns starting...(Copyright (C) Nick Peng <pymumu@gmail.com>, build:%s %s)", __DATE__, __TIME__);
+#if OPENSSL_API_COMPAT < 0x10100000L
-
+	SSL_CRYPTO_thread_cleanup();
-	if (_smartdns_init_ssl() != 0) {
+	ERR_free_strings();
-		tlog(TLOG_ERROR, "init ssl failed.");
+	EVP_cleanup();
-		goto errout;
+#endif
-	}
+	return 0;
-
+}
-	if (dns_conf_server_num <= 0) {
+
-		if (_smartdns_load_from_resolv() != 0) {
+static int _smartdns_init(void)
-			tlog(TLOG_ERROR, "load dns from resolv failed.");
+{
-			goto errout;
+	int ret;
-		}
+	char *logfile = SMARTDNS_LOG_FILE;
-	}
+
-
+	if (dns_conf_log_file[0] != 0) {
-	ret = fast_ping_init();
+		logfile = dns_conf_log_file;
-	if (ret != 0) {
+	}
-		tlog(TLOG_ERROR, "start ping failed.\n");
+
-		goto errout;
+	ret = tlog_init(logfile, dns_conf_log_size, dns_conf_log_num, 0, 0);
-	}
+	if (ret != 0) {
-
+		tlog(TLOG_ERROR, "start tlog failed.\n");
-	ret = dns_server_init();
+		goto errout;
-	if (ret != 0) {
+	}
-		tlog(TLOG_ERROR, "start dns server failed.\n");
+
-		goto errout;
+	tlog_setlogscreen(verbose_screen);
-	}
+	tlog_setlevel(dns_conf_log_level);
-
+
-	ret = dns_client_init();
+	tlog(TLOG_NOTICE, "smartdns starting...(Copyright (C) Nick Peng <pymumu@gmail.com>, build:%s %s)", __DATE__,
-	if (ret != 0) {
+		 __TIME__);
-		tlog(TLOG_ERROR, "start dns client failed.\n");
+
-		goto errout;
+	if (_smartdns_init_ssl() != 0) {
-	}
+		tlog(TLOG_ERROR, "init ssl failed.");
-	ret = _smartdns_add_servers();
+		goto errout;
-	if (ret != 0) {
+	}
-		tlog(TLOG_ERROR, "add servers failed.");
+
-		goto errout;
+	if (dns_conf_server_num <= 0) {
-	}
+		if (_smartdns_load_from_resolv() != 0) {
-
+			tlog(TLOG_ERROR, "load dns from resolv failed.");
-	ret = _smartdns_set_ecs_ip();
+			goto errout;
-	if (ret != 0) {
+		}
-		tlog(TLOG_WARN, "set ecs ip address failed.");
+	}
-	}
+
-
+	ret = fast_ping_init();
-	return 0;
+	if (ret != 0) {
-errout:
+		tlog(TLOG_ERROR, "start ping failed.\n");
-
+		goto errout;
-	return -1;
+	}
-}
+
-
+	ret = dns_server_init();
-static int _smartdns_run(void)
+	if (ret != 0) {
-{
+		tlog(TLOG_ERROR, "start dns server failed.\n");
-	return dns_server_run();
+		goto errout;
-}
+	}
-
+
-static void _smartdns_exit(void)
+	ret = dns_client_init();
-{
+	if (ret != 0) {
-	dns_server_exit();
+		tlog(TLOG_ERROR, "start dns client failed.\n");
-	dns_client_exit();
+		goto errout;
-	fast_ping_exit();
+	}
-	_smartdns_destroy_ssl();
+	ret = _smartdns_add_servers();
-	tlog_exit();
+	if (ret != 0) {
-	dns_server_load_exit();
+		tlog(TLOG_ERROR, "add servers failed.");
-}
+		goto errout;
-
+	}
-static void _sig_exit(int signo)
+
-{
+	ret = _smartdns_set_ecs_ip();
-	dns_server_stop();
+	if (ret != 0) {
-}
+		tlog(TLOG_WARN, "set ecs ip address failed.");
-
+	}
-static void _sig_error_exit(int signo, siginfo_t *siginfo, void *ct)
+
-{
+	return 0;
-	unsigned long PC = 0;
+errout:
-	ucontext_t *context = ct;
+
-#if defined(__i386__)
+	return -1;
-	int *pgregs = (int *)(&(context->uc_mcontext.gregs));
+}
-	PC = pgregs[REG_EIP];
+
-#elif defined(__x86_64__)
+static int _smartdns_run(void)
-	int *pgregs = (int *)(&(context->uc_mcontext.gregs));
+{
-	PC = pgregs[REG_RIP];
+	return dns_server_run();
-#elif defined(__arm__)
+}
-	PC = context->uc_mcontext.arm_pc;
+
-#elif defined(__aarch64__)
+static void _smartdns_exit(void)
-	PC = context->uc_mcontext.pc;
+{
-#elif defined(__mips__)
+	dns_server_exit();
-	PC = context->uc_mcontext.pc;
+	dns_client_exit();
-#endif
+	fast_ping_exit();
-	tlog(TLOG_FATAL, "process exit with signal %d, code = %d, errno = %d, pid = %d, self = %d, pc = %#lx, addr = %#lx, build(%s %s)\n", signo, siginfo->si_code,
+	_smartdns_destroy_ssl();
-		 siginfo->si_errno, siginfo->si_pid, getpid(), PC, (unsigned long)siginfo->si_addr, __DATE__, __TIME__);
+	tlog_exit();
-
+	dns_server_load_exit();
-	sleep(1);
+}
-	_exit(0);
+
-}
+static void _sig_exit(int signo)
-
+{
-static int sig_list[] = {SIGSEGV, SIGABRT, SIGBUS, SIGILL, SIGFPE};
+	dns_server_stop();
-
+}
-static int sig_num = sizeof(sig_list) / sizeof(int);
+
-
+static void _sig_error_exit(int signo, siginfo_t *siginfo, void *ct)
-static void _reg_signal(void)
+{
-{
+	unsigned long PC = 0;
-	struct sigaction act, old;
+	ucontext_t *context = ct;
-	int i = 0;
+#if defined(__i386__)
-	act.sa_sigaction = _sig_error_exit;
+	int *pgregs = (int *)(&(context->uc_mcontext.gregs));
-	sigemptyset(&act.sa_mask);
+	PC = pgregs[REG_EIP];
-	act.sa_flags = SA_RESTART | SA_SIGINFO;
+#elif defined(__x86_64__)
-
+	int *pgregs = (int *)(&(context->uc_mcontext.gregs));
-	for (i = 0; i < sig_num; i++) {
+	PC = pgregs[REG_RIP];
-		sigaction(sig_list[i], &act, &old);
+#elif defined(__arm__)
-	}
+	PC = context->uc_mcontext.arm_pc;
-}
+#elif defined(__aarch64__)
-
+	PC = context->uc_mcontext.pc;
-int main(int argc, char *argv[])
+#elif defined(__mips__)
-{
+	PC = context->uc_mcontext.pc;
-	int ret;
+#endif
-	int is_forground = 0;
+	tlog(TLOG_FATAL,
-	int opt;
+		 "process exit with signal %d, code = %d, errno = %d, pid = %d, self = %d, pc = %#lx, addr = %#lx, build(%s "
-	char config_file[MAX_LINE_LEN];
+		 "%s)\n",
-	char pid_file[MAX_LINE_LEN];
+		 signo, siginfo->si_code, siginfo->si_errno, siginfo->si_pid, getpid(), PC, (unsigned long)siginfo->si_addr,
-	int signal_ignore = 0;
+		 __DATE__, __TIME__);
-
+
-	strncpy(config_file, SMARTDNS_CONF_FILE, MAX_LINE_LEN);
+	sleep(1);
-	strncpy(pid_file, SMARTDNS_PID_FILE, MAX_LINE_LEN);
+	_exit(0);
-
+}
-	while ((opt = getopt(argc, argv, "fhc:p:Sv")) != -1) {
+
-		switch (opt) {
+static int sig_list[] = {SIGSEGV, SIGABRT, SIGBUS, SIGILL, SIGFPE};
-		case 'f':
+
-			is_forground = 1;
+static int sig_num = sizeof(sig_list) / sizeof(int);
-			break;
+
-		case 'c':
+static void _reg_signal(void)
-			snprintf(config_file, sizeof(config_file), "%s", optarg);
+{
-			break;
+	struct sigaction act, old;
-		case 'p':
+	int i = 0;
-			snprintf(pid_file, sizeof(pid_file), "%s", optarg);
+	act.sa_sigaction = _sig_error_exit;
-			break;
+	sigemptyset(&act.sa_mask);
-		case 'S':
+	act.sa_flags = SA_RESTART | SA_SIGINFO;
-			signal_ignore = 1;
+
-			break;
+	for (i = 0; i < sig_num; i++) {
-		case 'v':
+		sigaction(sig_list[i], &act, &old);
-			verbose_screen = 1;
+	}
-			break;
+}
-		case 'h':
+
-			_help();
+int main(int argc, char *argv[])
-			return 1;
+{
-		}
+	int ret;
-	}
+	int is_forground = 0;
-
+	int opt;
-	if (is_forground == 0) {
+	char config_file[MAX_LINE_LEN];
-		if (daemon(0, 0) < 0) {
+	char pid_file[MAX_LINE_LEN];
-			fprintf(stderr, "run daemon process failed, %s\n", strerror(errno));
+	int signal_ignore = 0;
-			return 1;
+
-		}
+	safe_strncpy(config_file, SMARTDNS_CONF_FILE, MAX_LINE_LEN);
-	}
+	safe_strncpy(pid_file, SMARTDNS_PID_FILE, MAX_LINE_LEN);
-
+
-	if (signal_ignore == 0) {
+	while ((opt = getopt(argc, argv, "fhc:p:Svx")) != -1) {
-		_reg_signal();
+		switch (opt) {
-	}
+		case 'f':
-
+			is_forground = 1;
-	if (dns_server_load_conf(config_file) != 0) {
+			break;
-		fprintf(stderr, "load config failed.\n");
+		case 'c':
-		goto errout;
+			snprintf(config_file, sizeof(config_file), "%s", optarg);
-	}
+			break;
-
+		case 'p':
-	if (create_pid_file(pid_file) != 0) {
+			snprintf(pid_file, sizeof(pid_file), "%s", optarg);
-		goto errout;
+			break;
-	}
+		case 'S':
-
+			signal_ignore = 1;
-	ret = _smartdns_init();
+			break;
-	if (ret != 0) {
+		case 'x':
-		usleep(100000);
+			verbose_screen = 1;
-		goto errout;
+			break;
-	}
+		case 'v':
-
+			_show_version();
-	signal(SIGINT, _sig_exit);
+			return 0;
-	signal(SIGPIPE, SIG_IGN);
+			break;
-	atexit(_smartdns_exit);
+		case 'h':
-
+			_help();
-	return _smartdns_run();
+			return 1;
-
+		}
-errout:
+	}
-
+
-	return 1;
+	if (is_forground == 0) {
-}
+		if (daemon(0, 0) < 0) {
+			fprintf(stderr, "run daemon process failed, %s\n", strerror(errno));
+			return 1;
+		}
+	}
+
+	if (signal_ignore == 0) {
+		_reg_signal();
+	}
+
+	if (create_pid_file(pid_file) != 0) {
+		goto errout;
+	}
+
+	if (dns_server_load_conf(config_file) != 0) {
+		fprintf(stderr, "load config failed.\n");
+		goto errout;
+	}
+
+	ret = _smartdns_init();
+	if (ret != 0) {
+		usleep(100000);
+		goto errout;
+	}
+
+	signal(SIGINT, _sig_exit);
+	signal(SIGPIPE, SIG_IGN);
+	atexit(_smartdns_exit);
+
+	return _smartdns_run();
+
+errout:
+
+	return 1;
+}

src/tlog.h

@@ -1,6 +1,6 @@
 /*
  * tinylog
- * Copyright (C) 2018 Ruilin Peng (Nick) <pymumu@gmail.com>
+ * Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>
  * https://github.com/pymumu/tinylog
  */
 
@@ -24,21 +24,44 @@ typedef enum {
 
 struct tlog_time {
     int year;
-    int mon;
+    unsigned int usec;
-    int mday;
+    unsigned char mon;
-    int hour;
+    unsigned char mday;
-    int min;
+    unsigned char hour;
-    int sec;
+    unsigned char min;
-    int usec;
+    unsigned char sec;
-};
+} __attribute__((packed));
+
+#ifndef TLOG_MAX_LINE_LEN
+#define TLOG_MAX_LINE_LEN (1024)
+#endif
+
+/* TLOG FLAGS LIST */
+/* set tlog not compress file when archive */
+#define TLOG_NOCOMPRESS (1 << 0)
+
+/* Set the segmentation mode to process the log, Used by the callback function to return a full log*/
+#define TLOG_SEGMENT (1 << 1)
+
+/*
+ multiwrite: enable multi process write mode.
+            NOTICE: maxlogsize in all prcesses must be same when enable this mode.
+ */
+#define TLOG_MULTI_WRITE (1 << 2)
+
+/* Not Block if buffer is insufficient. */
+#define TLOG_NONBLOCK (1 << 3)
+
+/* enable log to screen */
+#define TLOG_SCREEN (1 << 4)
 
 struct tlog_info {
-    const char *level;
+    tlog_level level;
     const char *file;
     const char *func;
     int line;
     struct tlog_time time;
-};
+} __attribute__((packed));
 
 /*
 Function: Print log
@@ -51,9 +74,12 @@ format: Log formats
 #define tlog(level, format, ...) tlog_ext(level, BASE_FILE_NAME, __LINE__, __func__, NULL, format, ##__VA_ARGS__)
 
 extern int tlog_ext(tlog_level level, const char *file, int line, const char *func, void *userptr, const char *format, ...)
-    __attribute__((format(printf, 6, 7)));
+    __attribute__((format(printf, 6, 7))) __attribute__((nonnull (6)));
 extern int tlog_vext(tlog_level level, const char *file, int line, const char *func, void *userptr, const char *format, va_list ap);
 
+/* write buff to log file */
+extern int tlog_write_log(char *buff, int bufflen);
+
 /* set log level */
 extern int tlog_setlevel(tlog_level level);
 
@@ -63,17 +89,18 @@ extern void tlog_setlogscreen(int enable);
 /* enalbe early log to screen */
 extern void tlog_set_early_printf(int enable);
 
+/* Get log level in string */
+extern const char *tlog_get_level_string(tlog_level level);
+
 /*
 Function: Initialize log module
 logfile: log file.
 maxlogsize: The maximum size of a single log file.
 maxlogcount: Number of archived logs.
-block: Blocked if buffer is not sufficient.
 buffsize: Buffer size, zero for default (128K)
-multiwrite: enable multi process write mode.
+flag: read tlog flags
-            NOTICE: maxlogsize in all prcesses must be same when enable this mode.
  */
-extern int tlog_init(const char *logfile, int maxlogsize, int maxlogcount, int block, int buffsize, int multiwrite);
+extern int tlog_init(const char *logfile, int maxlogsize, int maxlogcount, int buffsize, unsigned int flag);
 
 /* flush pending log message, and exit tlog */
 extern void tlog_exit(void);
@@ -89,6 +116,12 @@ read _tlog_format for example.
 typedef int (*tlog_format_func)(char *buff, int maxlen, struct tlog_info *info, void *userptr, const char *format, va_list ap);
 extern int tlog_reg_format_func(tlog_format_func func);
 
+/* register log output callback 
+ Note: info is invalid when flag TLOG_SEGMENT is not set.
+ */
+typedef int (*tlog_log_output_func)(struct tlog_info *info, char *buff, int bufflen, void *private_data);
+extern int tlog_reg_log_output_func(tlog_log_output_func output, void *private_data);
+
 struct tlog_log;
 typedef struct tlog_log tlog_log;
 /*
@@ -96,15 +129,16 @@ Function: open a new log stream, handler should close by tlog_close
 logfile: log file.
 maxlogsize: The maximum size of a single log file.
 maxlogcount: Number of archived logs.
-block: Blocked if buffer is not sufficient.
 buffsize: Buffer size, zero for default (128K)
-multiwrite: enable multi process write mode.
+flag: read tlog flags
-            NOTICE: maxlogsize in all prcesses must be same when enable this mode.
-
 return: log stream handler.
  */
-extern tlog_log *tlog_open(const char *logfile, int maxlogsize, int maxlogcount, int block, int buffsize, int multiwrite);
+extern tlog_log *tlog_open(const char *logfile, int maxlogsize, int maxlogcount, int buffsize, unsigned int flag);
 
+/* write buff to log file */
+extern int tlog_write(struct tlog_log *log, char *buff, int bufflen);
+
+/* close log stream */
 extern void tlog_close(tlog_log *log);
 
 /*
@@ -112,7 +146,7 @@ Function: Print log to log stream
 log: log stream
 format: Log formats
 */
-extern int tlog_printf(tlog_log *log, const char *format, ...) __attribute__((format(printf, 2, 3)));
+extern int tlog_printf(tlog_log *log, const char *format, ...) __attribute__((format(printf, 2, 3))) __attribute__((nonnull (1, 2)));
 
 /*
 Function: Print log to log stream with ap
@@ -125,6 +159,16 @@ extern int tlog_vprintf(tlog_log *log, const char *format, va_list ap);
 /* enalbe log to screen */
 extern void tlog_logscreen(tlog_log *log, int enable);
 
+/* register output callback */
+typedef int (*tlog_output_func)(struct tlog_log *log, char *buff, int bufflen);
+extern int tlog_reg_output_func(tlog_log *log, tlog_output_func output);
+
+/* set private data */
+extern void tlog_set_private(tlog_log *log, void *private_data);
+
+/* get private data */
+extern void *tlog_get_private(tlog_log *log);
+
 /* get local time */
 extern int tlog_localtime(struct tlog_time *tm);
 

src/util.c

@@ -1,3 +1,21 @@
+/*************************************************************************
+ *
+ * Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+ *
+ * smartdns is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * smartdns is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #ifndef _GNU_SOURCE
 #define _GNU_SOURCE
 #endif
@@ -6,17 +24,20 @@
 #include <arpa/inet.h>
 #include <errno.h>
 #include <fcntl.h>
+#include <inttypes.h>
+#include <linux/capability.h>
 #include <linux/netlink.h>
+#include <netinet/tcp.h>
 #include <openssl/crypto.h>
 #include <openssl/ssl.h>
 #include <pthread.h>
 #include <stdlib.h>
 #include <string.h>
+#include <sys/prctl.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <time.h>
 #include <unistd.h>
-#include <inttypes.h>
 
 #define TMP_BUFF_LEN_32 32
 
@@ -65,6 +86,7 @@ struct ipset_netlink_msg {
 };
 
 static int ipset_fd;
+static int pidfile_fd;
 
 unsigned long get_tick_count(void)
 {
@@ -125,6 +147,7 @@ int getaddr_by_host(char *host, struct sockaddr *addr, socklen_t *addr_len)
 		result->ai_addrlen = *addr_len;
 	}
 
+	addr->sa_family = result->ai_family;
 	memcpy(addr, result->ai_addr, result->ai_addrlen);
 	*addr_len = result->ai_addrlen;
 
@@ -138,6 +161,75 @@ errout:
 	return -1;
 }
 
+int getsocknet_inet(int fd, struct sockaddr *addr, socklen_t *addr_len)
+{
+	struct sockaddr_storage addr_store;
+	socklen_t addr_store_len = sizeof(addr_store);
+	if (getsockname(fd, (struct sockaddr *)&addr_store, &addr_store_len) != 0) {
+		goto errout;
+	}
+
+	switch (addr_store.ss_family) {
+	case AF_INET: {
+		struct sockaddr_in *addr_in;
+		addr_in = (struct sockaddr_in *)addr;
+		addr_in->sin_family = AF_INET;
+		*addr_len = sizeof(struct sockaddr_in);
+		memcpy(addr, addr_in, sizeof(struct sockaddr_in));
+	} break;
+	case AF_INET6: {
+		struct sockaddr_in6 *addr_in6;
+		addr_in6 = (struct sockaddr_in6 *)addr;
+		if (IN6_IS_ADDR_V4MAPPED(&addr_in6->sin6_addr)) {
+			struct sockaddr_in addr_in4;
+			memset(&addr_in4, 0, sizeof(addr_in4));
+			memcpy(&addr_in4.sin_addr.s_addr, addr_in6->sin6_addr.s6_addr + 12, sizeof(addr_in4.sin_addr.s_addr));
+			addr_in4.sin_family = AF_INET;
+			addr_in4.sin_port = 0;
+			*addr_len = sizeof(struct sockaddr_in);
+			memcpy(addr, &addr_in4, sizeof(struct sockaddr_in));
+		} else {
+			addr_in6->sin6_family = AF_INET6;
+			*addr_len = sizeof(struct sockaddr_in6);
+			memcpy(addr, addr_in6, sizeof(struct sockaddr_in6));
+		}
+	} break;
+	default:
+		goto errout;
+		break;
+	}
+	return 0;
+errout:
+	return -1;
+}
+
+int fill_sockaddr_by_ip(unsigned char *ip, int ip_len, int port, struct sockaddr *addr, socklen_t *addr_len)
+{
+	if (ip == NULL || addr == NULL || addr_len == NULL) {
+		return -1;
+	}
+
+	if (ip_len == IPV4_ADDR_LEN) {
+		struct sockaddr_in *addr_in = NULL;
+		addr->sa_family = AF_INET;
+		addr_in = (struct sockaddr_in *)addr;
+		addr_in->sin_port = htons(port);
+		addr_in->sin_family = AF_INET;
+		memcpy(&addr_in->sin_addr.s_addr, ip, ip_len);
+		*addr_len = 16;
+	} else if (ip_len == IPV6_ADDR_LEN) {
+		struct sockaddr_in6 *addr_in6 = NULL;
+		addr->sa_family = AF_INET6;
+		addr_in6 = (struct sockaddr_in6 *)addr;
+		addr_in6->sin6_port = htons(port);
+		addr_in6->sin6_family = AF_INET6;
+		memcpy(addr_in6->sin6_addr.s6_addr, ip, ip_len);
+		*addr_len = 28;
+	}
+
+	return -1;
+}
+
 int parse_ip(const char *value, char *ip, int *port)
 {
 	int offset = 0;
@@ -193,6 +285,98 @@ int parse_ip(const char *value, char *ip, int *port)
 	return 0;
 }
 
+static int _check_is_ipv4(const char *ip)
+{
+	const char *ptr = ip;
+	char c = 0;
+	int dot_num = 0;
+	int dig_num = 0;
+
+	while ((c = *ptr++) != '\0') {
+		if (c == '.') {
+			dot_num++;
+			dig_num = 0;
+			continue;
+		}
+
+		/* check number count of one field */
+		if (dig_num >= 4) {
+			return -1;
+		}
+
+		if (c >= '0' && c <= '9') {
+			dig_num++;
+			continue;
+		}
+
+		return -1;
+	}
+
+	/* check field number */
+	if (dot_num != 3) {
+		return -1;
+	}
+
+	return 0;
+}
+static int _check_is_ipv6(const char *ip)
+{
+	const char *ptr = ip;
+	char c = 0;
+	int colon_num = 0;
+	int dig_num = 0;
+
+	while ((c = *ptr++) != '\0') {
+		if (c == '[' || c == ']') {
+			continue;
+		}
+
+		if (c == ':') {
+			colon_num++;
+			dig_num = 0;
+			continue;
+		}
+
+		/* check number count of one field */
+		if (dig_num >= 5) {
+			return -1;
+		}
+
+		dig_num++;
+		if (c >= '0' && c <= '9') {
+			continue;
+		}
+
+		if (c >= 'a' && c <= 'f') {
+			continue;
+		}
+
+		if (c >= 'A' && c <= 'F') {
+			continue;
+		}
+
+		return -1;
+	}
+
+	/* check field number */
+	if (colon_num > 7) {
+		return -1;
+	}
+
+	return 0;
+}
+int check_is_ipaddr(const char *ip)
+{
+	if (strstr(ip, ".")) {
+		/* IPV4 */
+		return _check_is_ipv4(ip);
+	} else if (strstr(ip, ":")) {
+		/* IPV6 */
+		return _check_is_ipv6(ip);
+	}
+	return -1;
+}
+
 int parse_uri(char *value, char *scheme, char *host, int *port, char *path)
 {
 	char *scheme_end = NULL;
@@ -207,7 +391,7 @@ int parse_uri(char *value, char *scheme, char *host, int *port, char *path)
 		field_len = scheme_end - value;
 		if (scheme) {
 			memcpy(scheme, value, field_len);
-			scheme[field_len + 1] = 0;
+			scheme[field_len] = 0;
 		}
 		process_ptr += field_len + 3;
 	} else {
@@ -226,7 +410,7 @@ int parse_uri(char *value, char *scheme, char *host, int *port, char *path)
 		return -1;
 	}
 	memcpy(host_name, process_ptr, field_len);
-	host_name[field_len + 1] = 0;
+	host_name[field_len] = 0;
 
 	if (parse_ip(host_name, host, port) != 0) {
 		return -1;
@@ -235,8 +419,8 @@ int parse_uri(char *value, char *scheme, char *host, int *port, char *path)
 	process_ptr += field_len;
 
 	if (path) {
-		strcpy(path, process_ptr);
+		strncpy(path, process_ptr, PATH_MAX);
-	} 
+	}
 	return 0;
 }
 
@@ -258,7 +442,7 @@ int set_fd_nonblock(int fd, int nonblock)
 	return 0;
 }
 
-char *reverse_string(char *output, char *input, int len)
+char *reverse_string(char *output, const char *input, int len, int to_lower_case)
 {
 	char *begin = output;
 	if (len <= 0) {
@@ -269,6 +453,12 @@ char *reverse_string(char *output, char *input, int len)
 	len--;
 	while (len >= 0) {
 		*output = *(input + len);
+		if (to_lower_case) {
+			if (*output >= 'A' && *output <= 'Z') {
+				/* To lower case */
+				*output = *output + 32;
+			}
+		}
 		output++;
 		len--;
 	}
@@ -312,7 +502,8 @@ static int _ipset_support_timeout(const char *ipsetname)
 	return -1;
 }
 
-static int _ipset_operate(const char *ipsetname, const unsigned char addr[], int addr_len, unsigned long timeout, int operate)
+static int _ipset_operate(const char *ipsetname, const unsigned char addr[], int addr_len, unsigned long timeout,
+						  int operate)
 {
 	struct nlmsghdr *netlink_head;
 	struct ipset_netlink_msg *netlink_msg;
@@ -370,7 +561,9 @@ static int _ipset_operate(const char *ipsetname, const unsigned char addr[], int
 	netlink_head->nlmsg_len += NETLINK_ALIGN(sizeof(struct ipset_netlink_attr));
 	nested[1]->type = NLA_F_NESTED | IPSET_ATTR_IP;
 
-	_ipset_add_attr(netlink_head, (af == AF_INET ? IPSET_ATTR_IPADDR_IPV4 : IPSET_ATTR_IPADDR_IPV6) | NLA_F_NET_BYTEORDER, addr_len, addr);
+	_ipset_add_attr(netlink_head,
+					(af == AF_INET ? IPSET_ATTR_IPADDR_IPV4 : IPSET_ATTR_IPADDR_IPV6) | NLA_F_NET_BYTEORDER, addr_len,
+					addr);
 	nested[1]->len = (void *)buffer + NETLINK_ALIGN(netlink_head->nlmsg_len) - (void *)nested[1];
 
 	if (timeout > 0 && _ipset_support_timeout(ipsetname) == 0) {
@@ -381,7 +574,7 @@ static int _ipset_operate(const char *ipsetname, const unsigned char addr[], int
 	nested[0]->len = (void *)buffer + NETLINK_ALIGN(netlink_head->nlmsg_len) - (void *)nested[0];
 
 	for (;;) {
-		rc = sendto(ipset_fd, buffer, netlink_head->nlmsg_len, 0, (struct sockaddr *)&snl, sizeof(snl));
+		rc = sendto(ipset_fd, buffer, netlink_head->nlmsg_len, 0, (const struct sockaddr *)&snl, sizeof(snl));
 		if (rc >= 0) {
 			break;
 		}
@@ -483,6 +676,12 @@ int create_pid_file(const char *pid_file)
 		goto errout;
 	}
 
+	if (pidfile_fd > 0) {
+		close(pidfile_fd);
+	}
+
+	pidfile_fd = fd;
+
 	return 0;
 errout:
 	if (fd > 0) {
@@ -491,6 +690,7 @@ errout:
 	return -1;
 }
 
+#if OPENSSL_API_COMPAT < 0x10100000
 #define THREAD_STACK_SIZE (16 * 1024)
 static pthread_mutex_t *lock_cs;
 static long *lock_count;
@@ -547,6 +747,7 @@ void SSL_CRYPTO_thread_cleanup(void)
 	OPENSSL_free(lock_cs);
 	OPENSSL_free(lock_count);
 }
+#endif
 
 #define SERVER_NAME_LEN 256
 #define TLS_HEADER_LEN 5
@@ -555,25 +756,10 @@ void SSL_CRYPTO_thread_cleanup(void)
 #ifndef MIN
 #define MIN(X, Y) ((X) < (Y) ? (X) : (Y))
 #endif
-typedef struct Protocol {
-    const char *const name;
-    const uint16_t default_port;
-    int (*const parse_packet)(const char*, size_t, char *, const char **);
-    const char *const abort_message;
-    const size_t abort_message_len;
-} protocol_t;
 
 static int parse_extensions(const char *, size_t, char *, const char **);
 static int parse_server_name_extension(const char *, size_t, char *, const char **);
 
-const struct Protocol *const tls_protocol;
-
-static const protocol_t tls_protocol_st = {
-	.default_port = 443,
-	.parse_packet = &parse_tls_header,
-};
-const protocol_t *const tls_protocol = &tls_protocol_st;
-
 /* Parse a TLS packet for the Server Name Indication extension in the client
  * hello handshake, returning the first servername found (pointer to static
  * array)
@@ -741,3 +927,61 @@ static int parse_server_name_extension(const char *data, size_t data_len, char *
 
 	return -2;
 }
+
+void get_compiled_time(struct tm *tm)
+{
+	char s_month[5];
+	int month, day, year;
+	int hour, min, sec;
+	static const char *month_names = "JanFebMarAprMayJunJulAugSepOctNovDec";
+
+	sscanf(__DATE__, "%5s %d %d", s_month, &day, &year);
+	month = (strstr(month_names, s_month) - month_names) / 3;
+	sscanf(__TIME__, "%d:%d:%d", &hour, &min, &sec);
+	tm->tm_year = year - 1900;
+	tm->tm_mon = month;
+	tm->tm_mday = day;
+	tm->tm_isdst = -1;
+	tm->tm_hour = hour;
+	tm->tm_min = min;
+	tm->tm_sec = sec;
+}
+
+int has_network_raw_cap(void)
+{
+	int fd = socket(AF_INET, SOCK_RAW, IPPROTO_ICMP);
+	if (fd < 0) {
+		return 0;
+	}
+
+	close(fd);
+	return 1;
+}
+
+int set_sock_keepalive(int fd, int keepidle, int keepinterval, int keepcnt)
+{
+	const int yes = 1;
+	if (setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &yes, sizeof(yes)) != 0) {
+		return -1;
+	}
+
+	setsockopt(fd, IPPROTO_TCP, TCP_KEEPIDLE, &keepidle, sizeof(keepidle));
+	setsockopt(fd, IPPROTO_TCP, TCP_KEEPIDLE, &keepinterval, sizeof(keepinterval));
+	setsockopt(fd, IPPROTO_TCP, TCP_KEEPIDLE, &keepcnt, sizeof(keepcnt));
+
+	return 0;
+}
+
+int set_sock_lingertime(int fd, int time)
+{
+	struct linger l;
+
+	l.l_onoff = 1;
+	l.l_linger = 0;
+
+	if (setsockopt(fd, SOL_SOCKET, SO_LINGER, (const char *)&l, sizeof(l)) != 0) {
+		return -1;
+	}
+
+	return 0;
+}

src/util.h

@@ -1,9 +1,46 @@
-
+/*************************************************************************
+ *
+ * Copyright (C) 2018-2020 Ruilin Peng (Nick) <pymumu@gmail.com>.
+ *
+ * smartdns is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * smartdns is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
 
 #ifndef SMART_DNS_UTIL_H
 #define SMART_DNS_UTIL_H
 
+#include "stringutil.h"
 #include <netdb.h>
+#include <time.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /*__cplusplus */
+
+#ifndef TCP_FASTOPEN
+#define TCP_FASTOPEN 23
+#endif
+
+#ifndef TCP_FASTOPEN_CONNECT
+#define TCP_FASTOPEN_CONNECT 30
+#endif
+#ifndef TCP_THIN_LINEAR_TIMEOUTS
+#define TCP_THIN_LINEAR_TIMEOUTS 16
+#endif
+
+#ifndef TCP_THIN_DUPACK
+#define TCP_THIN_DUPACK 17
+#endif
 
 #define PORT_NOT_DEFINED -1
 #define MAX_IP_LEN 64
@@ -14,13 +51,19 @@ char *gethost_by_addr(char *host, int maxsize, struct sockaddr *addr);
 
 int getaddr_by_host(char *host, struct sockaddr *addr, socklen_t *addr_len);
 
+int getsocknet_inet(int fd, struct sockaddr *addr, socklen_t *addr_len);
+
+int fill_sockaddr_by_ip(unsigned char *ip, int ip_len, int port, struct sockaddr *addr, socklen_t *addr_len);
+
 int parse_ip(const char *value, char *ip, int *port);
 
+int check_is_ipaddr(const char *ip);
+
 int parse_uri(char *value, char *scheme, char *host, int *port, char *path);
 
 int set_fd_nonblock(int fd, int nonblock);
 
-char *reverse_string(char *output, char *input, int len);
+char *reverse_string(char *output, const char *input, int len, int to_lower_case);
 
 void print_stack(void);
 
@@ -53,4 +96,15 @@ int create_pid_file(const char *pid_file);
  */
 int parse_tls_header(const char *data, size_t data_len, char *hostname, const char **hostname_ptr);
 
+void get_compiled_time(struct tm *tm);
+
+int has_network_raw_cap(void);
+
+int set_sock_keepalive(int fd, int keepidle, int keepinterval, int keepcnt);
+
+int set_sock_lingertime(int fd, int time);
+
+#ifdef __cplusplus
+}
+#endif /*__cplusplus */
 #endif

systemd/smartdns.service.in

@@ -1,17 +1,17 @@
 [Unit]
 Description=smart dns server
 After=network.target 
+StartLimitBurst=0
+StartLimitIntervalSec=60
 
 [Service]
 Type=forking
-PIDFile=/var/run/smartdns.pid
+PIDFile=@RUNSTATEDIR@/smartdns.pid
-EnvironmentFile=/etc/default/smartdns
+EnvironmentFile=@SYSCONFDIR@/default/smartdns
-ExecStart=/usr/sbin/smartdns $SMART_DNS_OPTS
+ExecStart=@SBINDIR@/smartdns -p @RUNSTATEDIR@/smartdns.pid $SMART_DNS_OPTS 
 KillMode=process
 Restart=always
 RestartSec=2
-StartLimitBurst=0
-StartLimitIntervalSec=60
 
 [Install]
 WantedBy=multi-user.target