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implemented remote proxy dns lookup via use of reserved ip ranges and a lookup table

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rofl0r
2011-11-06 14:12:50 +01:00
parent d30b0a8712
commit 5de7fa20c8
3 changed files with 476 additions and 336 deletions
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66
src/libproxychains.c
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@ -62,7 +62,7 @@ static void init_lib(void);
static void init_lib(void)
{
proxychains_write_log("[proxychains v3.2] DLL init\n");
proxychains_write_log(LOG_PREFIX "DLL init\n");
get_chain_data(proxychains_pd, &proxychains_proxy_count, &proxychains_ct);
true_connect = (connect_t) dlsym(RTLD_NEXT, "connect");
@ -200,21 +200,27 @@ static inline void get_chain_data(
if(buff[0] != '\n' && buff[strspn(buff," ")]!='#') {
if(list) {
memset(&pd[count], 0, sizeof(proxy_data));
pd[count].ps=PLAY_STATE;
port_n=0;
sscanf(buff,"%s %s %d %s %s", type,host,&port_n,
pd[count].user,pd[count].pass);
pd[count].ip=inet_addr(host);
pd[count].port=htons((unsigned short)port_n);
if(!strcmp(type,"http")) {
pd[count].pt=HTTP_TYPE;
}else if(!strcmp(type,"socks4")) {
pd[count].pt=SOCKS4_TYPE;
}else if(!strcmp(type,"socks5")) {
pd[count].pt=SOCKS5_TYPE;
}else continue;
if( pd[count].ip && (int) pd[count].ip != -1 && port_n)
pd[count].ps = PLAY_STATE;
port_n = 0;
sscanf(buff,"%s %s %d %s %s", type, host, &port_n,
pd[count].user, pd[count].pass);
pd[count].ip.as_int = (uint32_t) inet_addr(host);
pd[count].port = htons((unsigned short)port_n);
if(!strcmp(type,"http")) {
pd[count].pt = HTTP_TYPE;
} else if(!strcmp(type,"socks4")) {
pd[count].pt = SOCKS4_TYPE;
} else if(!strcmp(type,"socks5")) {
pd[count].pt = SOCKS5_TYPE;
} else
continue;
if(pd[count].ip.as_int && port_n &&
(int) pd[count].ip.as_int != (uint32_t) -1)
if(++count==MAX_CHAIN)
break;
} else {
@ -226,13 +232,11 @@ static inline void get_chain_data(
*ct=STRICT_TYPE;
} else if(strstr(buff,"dynamic_chain")) {
*ct=DYNAMIC_TYPE;
}else if(strstr(buff,"tcp_read_time_out")){
} else if(strstr(buff,"tcp_read_time_out")){
sscanf(buff,"%s %d",user,&tcp_read_time_out) ;
}else if(strstr(buff,"tcp_connect_time_out")){
} else if(strstr(buff,"tcp_connect_time_out")){
sscanf(buff,"%s %d",user,&tcp_connect_time_out) ;
}
else if(strstr(buff,"localnet"))
{
} else if(strstr(buff,"localnet")) {
if (sscanf(buff,"%s %21[^/]/%15s", user,
local_in_addr_port, local_netmask) < 3) {
fprintf(stderr, "localnet format error");
@ -276,15 +280,14 @@ static inline void get_chain_data(
{
fprintf(stderr, "# of localnet exceed %d.\n", MAX_LOCALNET);
}
}
else if(strstr(buff,"chain_len")){
} else if(strstr(buff,"chain_len")){
char *pc;int len;
pc=strchr(buff,'=');
len=atoi(++pc);
proxychains_max_chain=(len?len:1);
}else if(strstr(buff,"quiet_mode")){
} else if(strstr(buff,"quiet_mode")){
proxychains_quiet_mode=1;
}else if(strstr(buff,"proxy_dns")){
} else if(strstr(buff,"proxy_dns")){
proxychains_resolver=1;
}
}
@ -301,6 +304,7 @@ int connect (int sock, const struct sockaddr *addr, unsigned int len)
{
int socktype=0, flags=0, ret=0;
socklen_t optlen = 0;
ip_type dest_ip;
#ifdef DEBUG
char str[256];
#endif
@ -335,20 +339,24 @@ int connect (int sock, const struct sockaddr *addr, unsigned int len)
}
}
flags=fcntl(sock, F_GETFL, 0);
flags = fcntl(sock, F_GETFL, 0);
if(flags & O_NONBLOCK)
fcntl(sock, F_SETFL, !O_NONBLOCK);
ret=connect_proxy_chain(
dest_ip.as_int = SOCKADDR(*addr);
ret = connect_proxy_chain(
sock,
SOCKADDR(*addr),
dest_ip,
SOCKPORT(*addr),
proxychains_pd,
proxychains_proxy_count,
proxychains_ct,
proxychains_max_chain );
fcntl(sock, F_SETFL, flags);
if(ret!=SUCCESS)
errno=ECONNREFUSED;
if(ret != SUCCESS)
errno = ECONNREFUSED;
return ret;
}