-
Notifications
You must be signed in to change notification settings - Fork 0
/
zzsocksc.c
216 lines (192 loc) · 6.82 KB
/
zzsocksc.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
#include <stdio.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <syslog.h>
#include <pthread.h>
#include <signal.h>
#include <string.h>
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <netinet/tcp.h>
#include <netdb.h>
#include <sys/select.h>
#include "zzsocks.h"
#define HTTP_HEAD_FILE "HTTP/1.0 200 OK\r\nConnection: close\r\nContent-Type: application\r\n\r\n"
#define HTTP_HEAD_404 "HTTP/1.0 404 Not Found\r\nConnection: close\r\n\r\n"
enum cmd_para{
PARA_HTTP_PORT = 1,
PARA_SOCK_PORT,
PARA_SERVER_ADDR,
PARA_SERVER_PORT,
PARA_SERVER_PW,
PARA_MAX
};
unsigned int g_server_ip = 0;
unsigned short g_server_port = 0;
unsigned int g_pw_hash = 0;
char g_server_pwd[MAX_VALID_PW] = {0};
void url_file(int sock, char *file_name) /* Maybe binary file */
{
int len;
char buf[65536];
FILE *file = fopen((char *)file_name, "rb");
if(NULL == file) return;
do{
len = fread(buf, 1, sizeof(buf), file);
if(len > 0) (void)send(sock, buf, len, 0);
}while(len == sizeof(buf));
fclose(file);
}
void * thread_web_server(void *arg)
{
struct timeval timeout={0, 500000};
int file = 0, size, sock = (int)(long)arg;
struct stat statbuff = {0,};
while(1) {
struct sockaddr_in des = {0, };
char url[8192] = {0,}, *poz, *end;
int temp_sock = accept(sock, (void*)&des, (unsigned int *)&size), ret = 1;
(void)setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, &timeout, sizeof(timeout));
(void)setsockopt(sock, SOL_SOCKET, SO_SNDTIMEO, &timeout, sizeof(timeout));
while(ret > 0 && strstr(url, "\r\n\r\n") == 0 && strlen(url) < 2048) /* get head */
ret = recv(temp_sock, url+strlen(url), 1, 0);
poz = strchr(url, '/');
if(!poz) return (void*)(long) close(temp_sock);
end = strchr(poz, ' ');
if(!end) return (void*)(long) close(temp_sock);
*end = 0;
ret = stat(poz+1, &statbuff);
if (!ret) {
(void)send(temp_sock, HTTP_HEAD_FILE, strlen(HTTP_HEAD_FILE), 0);
url_file(temp_sock, poz+1);
} else (void)send(temp_sock, HTTP_HEAD_404, strlen(HTTP_HEAD_404), 0);
close(temp_sock);
}
return NULL;
}
void * thread_sock_server(void *arg)
{
int sock = (int)(long)arg, num = time(NULL) % MAX_VALID_PW;
unsigned short port = 0;
char ver[2] = {0x05, 0x00}, *host, buf[CORE_BUF_SIZE] = {0};
int ret = recv(sock, buf, CORE_BUF_SIZE, 0), temp_sock, max_fd, r;
unsigned char ok[10] = {0x5, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, *p = 0;
struct timeval timeout = {5, 0};
struct socks_msg msg = {0};
unsigned int ip;
fd_set rset;
temp_sock = socket(AF_INET, SOCK_STREAM, 0);
struct sockaddr_in des = {.sin_family = AF_INET,};
des.sin_addr.s_addr = htonl(g_server_ip);
des.sin_port = htons(g_server_port);
p = (unsigned char *)(void *)&g_server_ip;
(void)setsockopt(temp_sock, SOL_SOCKET, SO_SNDTIMEO, &timeout, sizeof(timeout));
(void)setsockopt(temp_sock, SOL_SOCKET, SO_RCVTIMEO, &timeout, sizeof(timeout));
send(sock, ver, 2, 0);
recv(sock, buf, 100, 0);
if (0 == connect(temp_sock, (void *)&des, sizeof(struct sockaddr))) {
msg.magic = MAGIC_NUMBER;
msg.num = num;
msg.hash = g_pw_hash;
if(*(int *)(void *)buf == 0x3000105) {
char len = *(buf+4);
host = buf+5;
port = *(unsigned short *)(void *)(host+len);
*(host+len) = 0;
msg.port = port;
msg.type = TYPE_DNS_RESOVLE;
msg.length = len;
send(temp_sock, &msg, sizeof(msg), 0);
xor_crypt(host, len, g_server_pwd, num);
send(temp_sock, host, len, 0);
}else if(*(int *)(void *)buf == 0x1000105) {
ip = *(unsigned int *)(void *)(buf+4);
port = *(unsigned short *)(void *)(buf+8);
msg.port = port;
msg.type = TYPE_DNS_KNOWN;
msg.length = ip;
send(temp_sock, &msg, sizeof(msg), 0);
}else {
close(temp_sock);
return (void*)(long) close(sock);
}
send(sock, ok, 10, 0);
max_fd = (temp_sock > sock) ? temp_sock : sock;
while (1) {
FD_ZERO(&rset);
FD_SET(temp_sock, &rset);
FD_SET(sock, &rset);
timeout.tv_sec = 5;
timeout.tv_usec = 0;
r = select(max_fd+1, &rset, NULL, NULL, &timeout);
if (r < 0) break;
if (!r) continue;
if (FD_ISSET(sock, &rset)) {
ret = recv(sock, buf, CORE_BUF_SIZE, 0);
xor_crypt(buf, ret, g_server_pwd, num);
if (send(temp_sock, buf, ret, 0) <= 0) break;
}
if (FD_ISSET(temp_sock, &rset)) {
ret = recv(temp_sock, buf, CORE_BUF_SIZE, 0);
xor_crypt(buf, ret, g_server_pwd, num);
if (send(sock, buf, ret, 0) <= 0) break;
}
}
} else syslog(LOG_ERR, "connect server %u.%u.%u.%u:%d error\n", p[3], p[2], p[1], p[0], g_server_port);
close(temp_sock);
close(sock);
return NULL;
}
int main(int argc, char *argv[])
{
struct sigaction sa = {.sa_handler = SIG_IGN, };
struct sockaddr_in addr_http = {.sin_family = AF_INET,}, addr_sock = {.sin_family = AF_INET,}, des = {0,};
int size, sock_http, sock_sock, optval = 1;
pthread_t id;
struct timeval timeout={5, 0};
short http_port, sock_port;
char cwd[512] = {0,};
if(argc != PARA_MAX)
return printf("Usage: ./zzsocksc <http port> <sock port> <server addr> <server port> <password>\n");
(void)getcwd(cwd, sizeof(cwd) - 1);
(void)sigaction(SIGPIPE, &sa, 0);
http_port = (short)atoi(argv[PARA_HTTP_PORT]);
sock_port = (short)atoi(argv[PARA_SOCK_PORT]);
if (DNS(argv[PARA_SERVER_ADDR], &g_server_ip) != 0)
return printf("Error to resolve the server address.\n");
g_server_port = (unsigned short)atoi(argv[PARA_SERVER_PORT]);
g_pw_hash = get_key(argv[PARA_SERVER_PW], strlen(argv[PARA_SERVER_PW]), g_server_pwd);
addr_http.sin_port = htons(http_port);
addr_http.sin_addr.s_addr = htonl(INADDR_ANY);
addr_sock.sin_port = htons(sock_port);
addr_sock.sin_addr.s_addr = htonl(INADDR_ANY);
sock_http = socket(AF_INET, SOCK_STREAM, 0);
(void)setsockopt(sock_http, SOL_SOCKET, SO_REUSEADDR, (char *)&optval, sizeof(optval));
if(bind(sock_http, (struct sockaddr *)(void *)&addr_http, sizeof(struct sockaddr_in)) != 0)
return printf("Error %d to bind the TCP port.\n", errno);
if(listen(sock_http, 0) != 0)
return printf("Error %d to listen the TCP port.\n", errno);
sock_sock = socket(AF_INET, SOCK_STREAM, 0);
(void)setsockopt(sock_sock, SOL_SOCKET, SO_REUSEADDR, (char *)&optval, sizeof(optval));
if(bind(sock_sock, (struct sockaddr *)(void *)&addr_sock, sizeof(struct sockaddr_in)) != 0)
return printf("Error %d to bind the TCP port.\n", errno);
if(listen(sock_sock, 0) != 0)
return printf("Error %d to listen the TCP port.\n", errno);
(void)daemon(0, 0);
strcat(cwd, "/pac");
(void)chdir(cwd);
if(0 != pthread_create(&id, NULL, thread_web_server, (void*)(long)sock_http))
return printf("Error to create thread_web_server.\n");
while(sock_sock >= 0) {
int temp_sock = accept(sock_sock, (void*)&des, (unsigned int *)&size);
(void)setsockopt(temp_sock, SOL_SOCKET, SO_RCVTIMEO, &timeout, sizeof(timeout));
if(temp_sock >= 0){
if(0 == pthread_create(&id, NULL, thread_sock_server, (void *)(long)temp_sock))
(void)pthread_detach(id);
else close(temp_sock);
}
}
return 0;
}