aixiao/SpecialProxy
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mmmdbybyd 2018-10-27 22:30:57 +08:00 committed by GitHub
parent 80a25f7740
commit 5c0f9df53a
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1 changed files with 29 additions and 13 deletions
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32
main.c
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@ -3,7 +3,7 @@
#include "dns.h"
#include <pthread.h>
#define VERSION "0.1"
#define VERSION "0.2"
#define DEFAULT_DNS_IP "114.114.114.114"
struct epoll_event evs[MAX_CONNECTION + 1], ev;
@ -67,10 +67,12 @@ static void initializate(int argc, char **argv)
{
struct sockaddr_in dnsAddr;
char *p;
int opt, i, workers = 1;
int opt, i, workers;
/* 初始化部分变量值 */
addr_len = sizeof(addr);
lisFd = -1;
workers = 1;
dnsAddr.sin_family = addr.sin_family = AF_INET;
//默认dns地址
dnsAddr.sin_addr.s_addr = inet_addr(DEFAULT_DNS_IP);
@ -83,8 +85,8 @@ static void initializate(int argc, char **argv)
proxy_header = (char *)"\nHost:";
proxy_header_len = strlen(proxy_header);
local_header_len = strlen(local_header);
/* 读取命令行参数 */
while ((opt = getopt(argc, argv, "d:l:p:s:w:L:ah")) != -1)
/* 处理命令行参数 */
while ((opt = getopt(argc, argv, "d:l:p:s:w:u:L:ah")) != -1)
{
switch (opt)
{
@ -151,11 +153,25 @@ static void initializate(int argc, char **argv)
workers = atoi(optarg);
break;
case 'u':
if (setgid(atoi(optarg)) != 0))
{
perror("setgid");
exit(1);
}
if (setuid(atoi(optarg)) != 0))
{
perror("setuid");
exit(1);
}
break;
default:
usage();
break;
}
}
/* 初始化剩下的变量值 */
if (lisFd < 0)
{
fputs("no listen address\n", stderr);
@ -174,6 +190,7 @@ static void initializate(int argc, char **argv)
exit(1);
}
}
//设置dns请求头首部
memset(dns_list, 0, sizeof(dns_list));
for (i = MAX_CONNECTION / 2; i--; )
{
@ -189,9 +206,9 @@ static void initializate(int argc, char **argv)
dns_list[i].request[10] = 0;
dns_list[i].request[11] = 0;
}
signal(SIGPIPE, SIG_IGN);
while (workers-- > 1 && fork() == 0)
signal(SIGPIPE, SIG_IGN); //忽略PIPE信号
//子进程中的dnsFd必须重新申请，不然epoll监听可能读取到其他进程得到的数据
while (workers-- > 1 && fork() == 0)
dns_connect(&dnsAddr);
efd = epoll_create(MAX_CONNECTION + 1);
if (efd < 0)
@ -205,8 +222,7 @@ static void initializate(int argc, char **argv)
int main(int argc, char **argv)
{
initializate(argc, argv);
if (daemon(1, 1))
//if (daemon(1, 0))
if (daemon(1, 0))
{
perror("daemon");
return 1;