luci: support bind device option

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

@@ -25,6 +25,12 @@ msgstr "自动设置Dnsmasq"
 msgid "Automatically set as upstream of dnsmasq when port changes."
 msgstr "自动设置为Dnsmasq的上游服务器"
 
+msgid "Bind Device"
+msgstr "绑定到设备"
+
+msgid "Bind Device Name"
+msgstr "绑定的设备名称"
+
 msgid "Cache Size"
 msgstr "缓存大小"
 
@@ -227,6 +233,9 @@ msgstr "包含配置文件，路径为/etc/smartdns/conf.d，或自定义配置
 msgid "List of files to download."
 msgstr "下载的文件列表。"
 
+msgid "Listen only on the specified interfaces."
+msgstr "监听在指定的设备上，避免非网络的DNS查询请求。"
+
 msgid "Local Port"
 msgstr "本地端口"
 
@@ -242,6 +251,9 @@ msgstr "所有域名的最大 TTL 值。"
 msgid "Minimum TTL for all domain result."
 msgstr "所有域名的最小 TTL 值。"
 
+msgid "Name of device name listen on."
+msgstr "绑定的设备名称。"
+
 msgid "NFTset Name"
 msgstr "NFTSet名称"
 

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

@@ -117,6 +117,20 @@ o.cfgvalue    = function(...)
     return Flag.cfgvalue(...) or "1"
 end
 
+---- bind to device;
+o = s:taboption("advanced", Flag, "bind_device", translate("Bind Device"), translate("Listen only on the specified interfaces."))
+o.rmempty     = false
+o.default     = o.enabled
+o.cfgvalue    = function(...)
+    return Flag.cfgvalue(...) or "1"
+end
+
+---- bind device name;
+o = s:taboption("advanced", Value, "bind_device_name", translate("Bind Device Name"), translate("Name of device name listen on."))
+o.placeholder = "default"
+o.rempty      = true
+o.datatype    = "string"
+
 ---- Support DualStack ip selection
 o = s:taboption("advanced", Flag, "dualstack_ip_selection", translate("Dual-stack IP Selection"), translate("Enable IP selection between IPV4 and IPV6"))
 o.rmempty     = false

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

@@ -25,6 +25,12 @@ msgstr "自动设置Dnsmasq"
 msgid "Automatically set as upstream of dnsmasq when port changes."
 msgstr "端口更改时自动设为 dnsmasq 的上游。"
 
+msgid "Bind Device"
+msgstr "绑定到设备"
+
+msgid "Bind Device Name"
+msgstr "绑定的设备名称"
+
 msgid "Block domain"
 msgstr "屏蔽域名"
 
@@ -253,6 +259,9 @@ msgstr ""
 msgid "List of files to download."
 msgstr "下载文件列表"
 
+msgid "Listen only on the specified interfaces."
+msgstr "监听在指定的设备上，避免非网络的DNS查询请求。"
+
 msgid "Local Port"
 msgstr "本地端口"
 
@@ -268,6 +277,9 @@ msgstr "所有域名的最大 TTL 值。"
 msgid "Minimum TTL for all domain result."
 msgstr "所有域名的最小 TTL 值。"
 
+msgid "Name of device name listen on."
+msgstr "绑定的设备名称。"
+
 msgid "NFTset Name"
 msgstr "NFTSet名称"
 

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

@@ -208,6 +208,17 @@ return view.extend({
 		o.rmempty = false;
 		o.default = o.enabled;
 
+		// bind to device;
+		o = s.taboption("advanced", form.Flag, "bind_device", _("Bind Device"), _("Listen only on the specified interfaces."));
+		o.rmempty = false;
+		o.default = o.enabled;
+
+		// bind device name;
+		o = s.taboption("advanced", form.Value, "bind_device_name", _("Bind Device Name"), _("Name of device name listen on."));
+		o.placeholder = "default";
+		o.rempty = true;
+		o.datatype = "string";
+
 		// Support DualStack ip selection;
 		o = s.taboption("advanced", form.Flag, "dualstack_ip_selection", _("Dual-stack IP Selection"),
 			_("Enable IP selection between IPV4 and IPV6"));

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

@@ -353,6 +353,7 @@ load_second_server()
 	local section="$1"
 	local ARGS=""
 	local ADDR=""
+	local device=""
 
 	config_get_bool seconddns_enabled "$section" "seconddns_enabled" "0"
 	[ "$seconddns_enabled" = "0" ] && return
@@ -386,6 +387,10 @@ load_second_server()
 	config_get_bool seconddns_force_aaaa_soa "$section" "seconddns_force_aaaa_soa" "0"
 	[ "$seconddns_force_aaaa_soa" = "1" ] && ARGS="$ARGS -force-aaaa-soa"
 
+	config_get_bool bind_device "$section" "bind_device" "0"
+	config_get bind_device_name "$section" "bind_device_name" "${lan_device}"
+	[ ! -z "$bind_device_name" ] && [ "$bind_device" = "1" ] && device="@${bind_device_name}"
+
 	config_get ipv6_server "$section" "ipv6_server" "1"
 	if [ "$ipv6_server" = "1" ]; then
 		ADDR="[::]"
@@ -393,9 +398,11 @@ load_second_server()
 		ADDR=""
 	fi
 
-	conf_append "bind" "$ADDR:$seconddns_port $ARGS"
+	conf_append "bind" "$ADDR:$seconddns_port$device $ARGS"
+	[ ! -z "$device" ] && conf_append "bind" "$ADDR:$seconddns_port@lo $ARGS"
 	config_get_bool "seconddns_tcp_server" "$section" "seconddns_tcp_server" "1"
-	[ "$seconddns_tcp_server" = "1" ] && conf_append "bind-tcp" "$ADDR:$seconddns_port $ARGS"
+	[ "$seconddns_tcp_server" = "1" ] && conf_append "bind-tcp" "$ADDR:$seconddns_port$device $ARGS"
+	[ "$seconddns_tcp_server" = "1" ] && [ ! -z "$device" ] && conf_append "bind-tcp" "$ADDR:$seconddns_port@lo $ARGS"
 }
 
 conf_append_conf_files()
@@ -417,9 +424,12 @@ load_service()
 {
 	local section="$1"
 	args=""
+	local device=""
 	dnsmasq_lease_file="$(uci -q get dhcp.@dnsmasq[0].leasefile)"
 	dnsmasq_port="$(uci -q get dhcp.@dnsmasq[0].port)"
 	resolve_file="$(uci -q get dhcp.@dnsmasq[0].resolvfile)"
+	lan_device="$(uci -q get network.lan.device)"
+
 	[ -z "$dnsmasq_lease_file" ] && dnsmasq_lease_file="/tmp/dhcp.leases"
 	[ -z "$dnsmasq_port" ] && dnsmasq_port="53"
 	[ -z "$resolve_file" ] && resolve_file="/tmp/resolv.conf.d/resolv.conf.auto"
@@ -493,6 +503,10 @@ load_service()
 
 	config_get_bool enable_auto_update "$section" "enable_auto_update" "0"
 	[ "$enable_auto_update" = "1" ] && enable_auto_update || disable_auto_update
+
+	config_get_bool bind_device "$section" "bind_device" "0"
+	config_get bind_device_name "$section" "bind_device_name" "${lan_device}"
+	[ ! -z "$bind_device_name" ] && [ "$bind_device" = "1" ] && device="@${bind_device_name}"
 	
 	config_get redirect "$section" "redirect" ""
 	config_get old_port "$section" "old_port" "0"
@@ -561,16 +575,20 @@ load_service()
 	}
 
 	if [ "$ipv6_server" = "1" ]; then
-		conf_append "bind" "[::]:$port"
+		conf_append "bind" "[::]:$port$device"
+		[ ! -z "$device" ] && conf_append "bind" "[::]:$port@lo"
 	else
-		conf_append "bind" ":$port"
+		conf_append "bind" ":$port$device"
+		[ ! -z "$device" ] && conf_append "bind" ":$port@lo"
 	fi
 
 	[ "$tcp_server" = "1" ] && {
 		if [ "$ipv6_server" = "1" ]; then
-			conf_append "bind-tcp" "[::]:$port"
+			conf_append "bind-tcp" "[::]:$port$device"
+			[ ! -z "$device" ] && conf_append "bind-tcp" "[::]:$port@lo"
 		else
-			conf_append "bind-tcp" ":$port"
+			conf_append "bind-tcp" ":$port$device"
+			[ ! -z "$device" ] && conf_append "bind-tcp" ":$port@lo"
 		fi
 	}