daxi20/smartdns
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This commit is contained in:
Nick Peng
2018-06-08 00:56:32 +08:00
parent db3c7df954
commit 4ee70e3eac
11 changed files with 204 additions and 282 deletions
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300
smartdns.c
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@@ -1,7 +1,7 @@
/*************************************************************************
*
* Copyright (C) 2018 Ruilin Peng (Nick) <pymumu@gmail.com>.
*
*
* Copyright (C) 2018 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
@@ -16,31 +16,74 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "fast_ping.h"
#include "atomic.h"
#include "conf.h"
#include "dns_client.h"
#include "dns_server.h"
#include "fast_ping.h"
#include "hashtable.h"
#include "list.h"
#include "tlog.h"
#include "conf.h"
#include "atomic.h"
#include "util.h"
#include <errno.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
atomic_t r = ATOMIC_INIT(0);
#define RESOLVE_FILE "/etc/resolv.conf"
#define MAX_LINE_LEN 1024
#define MAX_KEY_LEN 64
void print_result(struct ping_host_struct *ping_host, const char *host, FAST_PING_RESULT result, struct sockaddr *addr, socklen_t addr_len, int seqno,
struct timeval *tv, void *userptr)
int smartdns_load_from_resolv(void)
{
atomic_inc(&r);
#if 0
if (result == PING_RESULT_RESPONSE) {
double rtt = tv->tv_sec * 1000.0 + tv->tv_usec / 1000.0;
printf("from %15s: seq=%d time=%.3f\n", host, seqno, rtt);
} else if (result == PING_RESULT_TIMEOUT) {
printf("from %15s: seq=%d timeout\n", host, seqno);
FILE *fp = NULL;
char line[MAX_LINE_LEN];
char key[MAX_KEY_LEN];
char value[MAX_LINE_LEN];
char ns_ip[DNS_MAX_IPLEN];
int port = PORT_NOT_DEFINED;
int ret = -1;
int filed_num = 0;
int line_num = 0;
fp = fopen(RESOLVE_FILE, "r");
if (fp == NULL) {
tlog(TLOG_ERROR, "open %s failed, %s", RESOLVE_FILE, strerror(errno));
return -1;
}
#endif
while (fgets(line, MAX_LINE_LEN, fp)) {
line_num++;
filed_num = sscanf(line, "%63s %1023[^\r\n]s", key, value);
if (filed_num != 2) {
continue;
}
if (strncmp(key, "nameserver", MAX_KEY_LEN) != 0) {
continue;
}
if (parse_ip(value, ns_ip, &port) != 0) {
continue;
}
if (port == PORT_NOT_DEFINED) {
port = DEFAULT_DNS_PORT;
}
strncpy(dns_conf_servers[dns_conf_server_num].server, ns_ip, DNS_MAX_IPLEN);
dns_conf_servers[dns_conf_server_num].port = port;
dns_conf_servers[dns_conf_server_num].type = DNS_SERVER_UDP;
dns_conf_server_num++;
ret = 0;
}
fclose(fp);
return ret;
}
int smartdns_add_servers(void)
@@ -53,227 +96,78 @@ int smartdns_add_servers(void)
tlog(TLOG_ERROR, "add server failed, %s:%d", dns_conf_servers[i].server, dns_conf_servers[i].port);
return -1;
}
}
}
return 0;
}
int smartdns_init()
{
int ret;
int ret;
if (load_conf("smartdns.conf") != 0) {
fprintf(stderr, "load config failed.");
goto errout;
}
ret = tlog_init(".", "smartdns.log", 1024 * 1024, 8, 1, 0, 0);
if (ret != 0) {
if (ret != 0) {
tlog(TLOG_ERROR, "start tlog failed.\n");
goto errout;
}
tlog_setlogscreen(1);
//tlog_setlevel(TLOG_ERROR);
tlog_setlevel(TLOG_DEBUG);
if (dns_conf_server_num <= 0) {
if (smartdns_load_from_resolv() != 0) {
tlog(TLOG_ERROR, "load dns from resolv failed.");
goto errout;
}
}
ret = fast_ping_init();
if (ret != 0) {
tlog(TLOG_ERROR, "start ping failed.\n");
goto errout;
}
if (ret != 0) {
tlog(TLOG_ERROR, "start ping failed.\n");
goto errout;
}
ret = dns_server_init();
if (ret != 0) {
tlog(TLOG_ERROR, "start dns server failed.\n");
goto errout;
}
ret = dns_server_init();
if (ret != 0) {
tlog(TLOG_ERROR, "start dns server failed.\n");
goto errout;
}
ret = dns_client_init();
if (ret != 0) {
tlog(TLOG_ERROR, "start dns client failed.\n");
goto errout;
}
ret = dns_client_init();
if (ret != 0) {
tlog(TLOG_ERROR, "start dns client failed.\n");
goto errout;
}
ret = smartdns_add_servers();
if (ret != 0) {
if (ret != 0) {
tlog(TLOG_ERROR, "add servers failed.");
goto errout;
}
/*
dns_add_server("192.168.1.1", 53, DNS_SERVER_UDP);
dns_add_server("114.114.114.114", 53, DNS_SERVER_UDP);
dns_add_server("123.207.137.88", 53, DNS_SERVER_UDP);
dns_add_server("193.112.15.186", 53, DNS_SERVER_UDP);
dns_add_server("202.141.178.13", 5353, DNS_SERVER_UDP);
dns_add_server("208.67.222.222", 5353, DNS_SERVER_UDP);
dns_add_server("77.88.8.8", 53, DNS_SERVER_UDP);
dns_add_server("202.141.162.123", 53, DNS_SERVER_UDP);
dns_add_server("101.132.183.99", 53, DNS_SERVER_UDP);
*/
// int i = 0;
// for(i = 0; i < 10; i++)
// {
// fast_ping_start("205.185.208.142", 1, 1000, print_result, NULL);
// fast_ping_start("205.185.208.142", 1, 1000, print_result, NULL);
// fast_ping_start("205.185.208.142", 1, 1000, print_result, NULL);
// fast_ping_start("205.185.208.142", 1, 1000, print_result, NULL);
// fast_ping_start("192.168.1.1", 1, 1000, print_result, NULL);
// fast_ping_start("192.168.1.1", 1, 1000, print_result, NULL);
// fast_ping_start("192.168.1.1", 1, 1000, print_result, NULL);
// fast_ping_start("192.168.1.1", 1, 1000, print_result, NULL);
// fast_ping_start("123.207.137.88", 1, 1000, print_result, NULL);
// fast_ping_start("123.207.137.88", 1, 1000, print_result, NULL);
// fast_ping_start("123.207.137.88", 1, 1000, print_result, NULL);
// fast_ping_start("123.207.137.88", 1, 1000, print_result, NULL);
// }
// sleep(2);
// printf("i = %d, n = %d\n", i, atomic_read(&r));
return 0;
errout:
return -1;
return -1;
}
int smartdns_run()
{
return dns_server_run();
return dns_server_run();
}
void smartdns_exit()
{
fast_ping_exit();
dns_client_exit();
dns_server_exit();
fast_ping_exit();
dns_client_exit();
dns_server_exit();
tlog_exit();
}
struct data {
struct list_head list;
int n;
};
void list_test()
{
struct list_head head;
struct list_head *iter;
int i = 0;
INIT_LIST_HEAD(&head);
for (i = 0; i < 10; i++) {
struct data *h = malloc(sizeof(struct data));
h->n = i;
list_add(&h->list, &head);
}
list_for_each(iter, &head)
{
struct data *d = list_entry(iter, struct data, list);
printf("%d\n", d->n);
}
}
struct data_hash {
struct hlist_node node;
int n;
char str[32];
};
int hash_test()
{
DEFINE_HASHTABLE(ht, 7);
struct data_hash *temp;
struct data_hash *obj;
int i;
int key;
for (i = 11; i < 17; i++) {
temp = malloc(sizeof(struct data_hash));
temp->n = i * i;
hash_add(ht, &temp->node, temp->n);
}
for (i = 11; i < 17; i++) {
key = i * i;
hash_for_each_possible(ht, obj, node, key)
{
printf("value: %d\n", obj->n);
};
}
return 0;
}
int hash_string_test()
{
DEFINE_HASHTABLE(ht, 7);
struct data_hash *temp;
struct data_hash *obj;
int i;
int key;
for (i = 0; i < 10; i++) {
temp = malloc(sizeof(struct data_hash));
sprintf(temp->str, "%d", i);
hash_add(ht, &temp->node, hash_string(temp->str));
}
for (i = 0; i < 10; i++) {
char key_str[32];
sprintf(key_str, "%d", i);
key = hash_string(key_str);
hash_for_each_possible(ht, obj, node, key)
{
printf("i = %d value: %s\n", i, obj->str);
};
}
return 0;
}
#if 0
struct data_rbtree {
struct rb_node list;
int value;
};
int rbtree_test()
{
struct rb_root root;
struct rb_node *n;
RB_EMPTY_ROOT(&root);
int i;
for (i = 0; i < 10; i++)
{
struct data_rbtree *r = malloc(sizeof(struct data_rbtree));
r->value = i;
rb_insert(&r->list, &root);
}
n = rb_first(&root);
int num = 5;
while (n) {
struct data_rbtree *r = container_of(n, struct data_rbtree, list);
if (r->value < num) {
n = n->rb_left;
} else if (r->value > num) {
n = n->rb_right;
} else {
printf("n = %d\n", r->value);
break;
}
}
return 0;
}
#endif
#include <signal.h>
void sig_handle(int sig)
{
tlog(TLOG_ERROR, "process exit.\n");
@@ -282,18 +176,18 @@ void sig_handle(int sig)
int main(int argc, char *argv[])
{
int ret;
int ret;
atexit(smartdns_exit);
signal(SIGABRT, sig_handle);
ret = smartdns_init();
if (ret != 0) {
goto errout;
}
if (ret != 0) {
goto errout;
}
return smartdns_run();
return smartdns_run();
errout:
return 1;
return 1;
}