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Configure substitution parameters.

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This commit is contained in:
aixiao 2021-04-01 16:23:21 +08:00
parent eda36ad2df
commit 9a28c71d6f
6 changed files with 205 additions and 62 deletions
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27
README.md
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@ -1,10 +1,12 @@
# AIS
修改自mproxy(https://github.com/examplecode/mproxy), 作为CProxy服务端. 仅代理TCP
支持客户端IP白名单
支持IPV4
支持IPV6
# 参数
修改自mproxy(https://github.com/examplecode/mproxy), 作为CProxy服务端. 仅代理TCP.
支持客户端IP白名单.
支持IPV4.
支持IPV6.
## 参数
Usage:
-l <port number> specifyed local listen port
-h <remote server and port> specifyed next hop server name
@ -13,12 +15,21 @@
-E <0-128> encode data when forwarding data
-D <0-128> decode data when receiving data
# 配置文件
## 配置文件
global {
// 本地端口
local_port="127";
// IO标志 R_C_DEC、W_S_ENC. W_S_ENC在转发数据时对数据进行编码, R_C_DEC 接收数据时解码数据
io_flag="R_C_DEC";
// 编码
encode=128;
// 是否开启白名单（1开启，0关闭）
IP_RESTRICTION = 1;
// 白名单IP段, 判断前两段IP空格隔开冒号结尾(可以写完整的IPV4和IPV6地址)
IP_SEGMENT= 115.60 115.61 115.62 223.88 2409:8a44:336:7180:5cb7:5b71:85e2:7f14;
}

154
ais.c
View File

@ -169,20 +169,36 @@ void extract_server_path(const char *header, char *output)
}
int isLetter(char c) // a-z A-Z 返回1, 0-9 返回0
{
return ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'));
}
int isChar(char *string) // string字符串里有字符时返回1
{
int i;
for (i = 0; i < strlen(string); i++) {
if (isLetter(string[i])) {
return 1;
}
}
return 0;
}
int extract_host(const char *header)
{
char *_p = strstr(header, "CONNECT"); /* 在 CONNECT 方法中解析 隧道主机名称及端口号 */
char *_p = strstr(header, "CONNECT"); // 在 CONNECT 方法中解析 隧道主机名称及端口号
if (_p) {
if (strchr(header, '[') || strchr(header, ']')) { // ipv6
if (strchr(header, '[') || strchr(header, ']')) {
char *_p1 = strchr(header, '[');
//printf("%s\n", _p1+1);
char *_p2 = strchr(_p1 + 1, ']');
//printf("%s\n", _p2);
strncpy(remote_host, _p1 + 1, (int)(_p2 - _p1) - 1);
remote_port = 443;
char *_p3 = strchr(_p2 + 1, ' ');
char s_port[270];
strncpy(s_port, _p2 + 2, (int)(_p3 - _p2) - 1);
remote_port = atoi(s_port);
return 0;
}
@ -204,8 +220,7 @@ int extract_host(const char *header)
}
return 0;
}
} else { // 在非 CONNECT 方法中解析主机名称及端口号
char *p = strstr(header, "Host:");
if (!p) {
return -1;
@ -214,8 +229,69 @@ int extract_host(const char *header)
if (!p1) {
return -1;
}
char *p2 = strchr(p + 5, ':'); // 5是指'Host:'的长度
char *p2 = strchr(p + 5, ':'); /* 5是指'Host:'的长度 */
int h_len = (int)(p1 - p - 6);
char s_host[h_len];
strncpy(s_host, p + 6, p1 - p - 6);
s_host[h_len] = '\0';
char *p3 = strchr(s_host, ':');
char *p4 = NULL;
if (p3)
p4 = strchr(p3 + 1, ':');
if (p4 != NULL) { // IPV6
char *p5 = NULL;
char *p6 = NULL;
p5 = strchr(header, ' ');
if (p5)
p6 = strchr(p5 + 1, ' ');
char url[p6 - p5 - 1];
memset(url, 0, p6 - p5 - 1);
strncpy(url, p5 + 1, p6 - p5 - 1);
url[p6 - p5 - 1] = '\0';
if (strstr(url, "http") != NULL) {
memcpy(url, url + 7, strlen(url) - 7); // 去除 'http://'
url[strlen(url) - 7] = '\0';
char *p7 = strchr(url, '/');
if (p7) { // 去除 uri
url[p7 - url] = '\0';
}
printf("url: %s\n", url);
char *p8 = strchr(url, ']');
if (p8) {
remote_port = atoi(p8 + 2);
strncpy(remote_host, url + 1, strlen(url) - strlen(p8) - 1);
if (strlen(p8) < 3) { // 如果p8为 ']' 时, 长度为1
remote_port = 80;
strncpy(remote_host, url + 1, strlen(url) - strlen(p8) - 1);
}
} else { // 不包含'['、']'时
remote_port = 80;
strcpy(remote_host, url);
}
return 0;
} else { // 头为不规范的url时处理Host
char *_p1 = strchr(s_host, '[');
char *_p2 = strchr(_p1+1, ']');
if (_p1 && _p2) {
strncpy(remote_host, _p1+1, _p2 - _p1 -1);
remote_port = atoi(_p2+2);
if (strlen(_p2) < 3) {
remote_port = 80;
strncpy(remote_host, s_host+1, strlen(s_host)-strlen(_p2)-1);
}
}
return 0;
}
return -1;
}
if (p2 && p2 < p1) {
int p_len = (int)(p1 - p2 - 1);
@ -225,16 +301,15 @@ int extract_host(const char *header)
remote_port = atoi(s_port);
int h_len = (int)(p2 - p - 5 - 1);
strncpy(remote_host, p + 5 + 1, h_len); //Host:
//assert h_len < 128;
strncpy(remote_host, p + 5 + 1, h_len);
remote_host[h_len] = '\0';
} else {
int h_len = (int)(p1 - p - 5 - 1 - 1);
strncpy(remote_host, p + 5 + 1, h_len);
//assert h_len < 128;
remote_host[h_len] = '\0';
remote_port = 80;
}
}
return 0;
}
@ -257,6 +332,7 @@ void hand_mproxy_info_req(int sock, char *header)
{
char server_path[255];
char response[8192];
int w;
extract_server_path(header, server_path);
LOG("server path:%s\n", server_path);
@ -268,7 +344,9 @@ void hand_mproxy_info_req(int sock, char *header)
<pre>%s</pre>\
</body></html>\n", info_buf);
write(sock, response, strlen(response));
if (-1 == (w = write(sock, response, strlen(response)))) {
perror("write");
}
}
/* 获取运行的基本信息输出到指定的缓冲区 */
@ -358,9 +436,12 @@ void handle_client(int client_sock, struct sockaddr_in client_addr)
}
// 打印HTTP header
printf("%s", header_buffer);
//printf("%s\n", remote_host);
//printf("%d\n", remote_port);
if ((remote_sock = create_connection6(remote_host, remote_port)) < 0) {
LOG("Cannot connect to host [%s:%d]\n", remote_host, remote_port);
return;
}
@ -590,7 +671,7 @@ void server_loop(int signal, char *conffile)
exit(0);
}
}
//close(client_sock);
close(client_sock); // 关闭父进程 client_sock
}
if (signal == 6) {
@ -612,7 +693,7 @@ void server_loop(int signal, char *conffile)
exit(0);
}
}
//close(client_sock6);
close(client_sock6); // 关闭父进程 client_sock6
}
}
@ -708,8 +789,6 @@ void start_server(int SIGNAL, char *conffile)
//初始化全局变量
header_buffer = (char *)malloc(MAX_HEADER_SIZE);
signal(SIGCHLD, sigchld_handler); // 防止子进程变成僵尸进程
if (SIGNAL == 4) {
if ((server_sock = create_server_socket(local_port)) < 0) { // start server
LOG("Cannot run server on %d\n", local_port);
@ -729,6 +808,8 @@ void start_server(int SIGNAL, char *conffile)
int _main(int argc, char *argv[])
{
signal(SIGCHLD, sigchld_handler); // 防止子进程变成僵尸进程
local_port = DEFAULT_LOCAL_PORT;
io_flag = FLG_NONE;
sslEncodeCode = 1;
@ -739,6 +820,14 @@ int _main(int argc, char *argv[])
char *p = NULL;
char *conffile = "./ais.conf";
conf *configure = (struct CONF *)malloc(sizeof(struct CONF));
read_conf(conffile, configure);
printf("%d\n", configure->local_port);
printf("%s\n", configure->io_flag);
printf("%d\n", configure->encode);
printf("%d\n", configure->IP_RESTRICTION);
printf("%s\n", configure->IP_SEGMENT);
//exit(0);
while (-1 != (opt = getopt(argc, argv, optstrs))) {
switch (opt) {
@ -747,14 +836,19 @@ int _main(int argc, char *argv[])
break;
case 'f':
p = strchr(optarg, ':');
if (p) {
if (p) { // IPV4
strncpy(remote_host, optarg, p - optarg);
remote_port = atoi(p + 1);
} else {
strncpy(remote_host, optarg, strlen(remote_host));
}
strcpy(remote_host, "2001:19f0:7001:3bcb:5400:3ff:fe03:860e");
remote_port = 127;
p = strchr(p + 1, ':');
if (p) { // IPV6
p = strrchr(optarg, ':');
strncpy(remote_host, optarg, p - optarg);
remote_port = atoi(p + 1);
}
break;
case 'd':
DAEMON = 1;
@ -782,8 +876,17 @@ int _main(int argc, char *argv[])
}
}
local_port = configure->local_port;
if (strcasecmp(configure->io_flag, "W_S_ENC") == 0) {
io_flag = W_S_ENC;
}
if (strcasecmp(configure->io_flag, "R_C_DEC") == 0) {
io_flag = R_C_DEC;
}
sslEncodeCode = configure->encode;
if (DAEMON == 1) { // 守护进程
if(daemon(1, 1)) {
if (daemon(1, 1)) {
perror("daemon");
return -1;
}
@ -797,10 +900,11 @@ int _main(int argc, char *argv[])
start_server(4, conffile);
}
if(fork() == 0) { // IPV6 进程
if (fork() == 0) { // IPV6 进程
start_server(6, conffile);
}
free_conf(configure);
return 0;
}
@ -808,5 +912,3 @@ int main(int argc, char *argv[])
{
return _main(argc, argv);
}

5
ais.conf
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@ -1,4 +1,7 @@
global {
local_port="127";
io_flag="R_C_DEC";
encode=128;
IP_RESTRICTION = 0;
IP_SEGMENT= 223.104 223.88 2001:19f0:7001:3bcb:5400:3ff:fe03:860e 2409:8946:28f:5ab8:a96c:44fb:e0ba:63c8 fe80::5400:3ff:fe03:860e 2409:8946:28f:5ab8:74fa:521c:6bb4:7888 2409:8a44:336:7180:f187:5343:2f11:cd65 2409:8a44:336:7180:5cb7:5b71:85e2:7f14;
IP_SEGMENT= 127.0.0.1;
}

22
conf.c
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@ -68,15 +68,32 @@ static void parse_global_module(char *content, conf * p)
int val_begin_len;
while ((lineEnd = set_var_val_lineEnd(content, &var, &val_begin, &val_end)) != NULL) {
if (strcasecmp(var, "local_port") == 0) {
p->local_port = atoi(val_begin);
}
if (strcasecmp(var, "io_flag") == 0) {
val_begin_len = strlen(val_begin) + 1;
p->io_flag = (char *)malloc(val_begin_len);
memset(p->io_flag, 0, val_begin_len);
memcpy(p->io_flag, val_begin, val_begin_len);
}
if (strcasecmp(var, "encode") == 0) {
p->encode = atoi(val_begin);
}
if (strcasecmp(var, "IP_SEGMENT") == 0) {
val_begin_len = strlen(val_begin) + 1;
p->IP_SEGMENT = (char *)malloc(val_begin_len);
memset(p->IP_SEGMENT, 0, val_begin_len);
memcpy(p->IP_SEGMENT, val_begin, val_begin_len);
}
if (strcasecmp(var, "IP_RESTRICTION") == 0) {
p->IP_RESTRICTION = atoi(val_begin);
}
content = strchr(lineEnd + 1, '\n');
}
}
@ -113,6 +130,7 @@ void read_conf(char *filename, conf * configure)
char *buff, *global_content;
FILE *file;
long file_size;
int return_val;
file = fopen(filename, "r");
if (file == NULL)
@ -123,7 +141,8 @@ void read_conf(char *filename, conf * configure)
if (buff == NULL)
perror("out of memory.");
rewind(file);
fread(buff, file_size, 1, file);
if (1 > (return_val = fread(buff, file_size, 1, file)))
perror("fread");
fclose(file);
buff[file_size] = '\0';
@ -137,6 +156,7 @@ void read_conf(char *filename, conf * configure)
void free_conf(conf * p)
{
free(p->IP_SEGMENT);
free(p->io_flag);
return;
}

3
conf.h
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@ -10,6 +10,9 @@
// 配置文件结构
typedef struct CONF {
int local_port;
char *io_flag;
int encode;
int IP_RESTRICTION;
char *IP_SEGMENT;
} conf;

6
stript/start.sh
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@ -7,5 +7,9 @@
SHELL_FOLDER=$(cd "$(dirname "$0")"; pwd) #脚本所在目录
SHELL_FOLDER=$(dirname $(readlink -f "$0"))
${SHELL_FOLDER}/../ais -l 127 -D 128 -d
NAME="ais"; #tmux 会话名字
tmux new -d -s $NAME && tmux send -t $NAME 'cd ~' ENTER && tmux send -t $NAME "cd ${SHELL_FOLDER}/../; ./ais -l 127 -D 128" ENTER