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Description: Solve problems with connecting to localhost.
Forwarded: no
Author: Emilio López <turl@tuxfamily.org>
Last-Update: 2009-03-03
--- proxychains-3.1.orig/proxychains/libproxychains.c 2006-03-16 05:16:59.000000000 +1300
+++ proxychains-3.1/proxychains/libproxychains.c 2007-04-18 15:31:24.000000000 +1200
@@ -42,6 +42,30 @@
#define SOCKFAMILY(x) (satosin(x)->sin_family)
#define MAX_CHAIN 30*1024
+#ifdef PTRUE
+#undef PTRUE
+#endif
+#define PTRUE 1
+
+#ifdef PFALSE
+#undef PFALSE
+#endif
+#define PFALSE 0
+
+/* total number of available slots for subnets */
+#define MAX_LOCAL_NETS 20
+
+/* structur for representing networks to be excluded */
+typedef struct
+{
+ int valid;
+ unsigned int subnetwork;
+ unsigned int subnetmask;
+} my_network;
+
+my_network localnet[MAX_LOCAL_NETS]; /* array of sub nets */
+
+
int tcp_read_time_out;
int tcp_connect_time_out;
chain_type proxychains_ct;
@@ -55,14 +79,15 @@
static inline void get_chain_data(
proxy_data *pd,
unsigned int *proxy_count,
- chain_type *ct);
+ chain_type *ct,
+ my_network *subnets);
static void init_lib()
{
// proxychains_write_log("ProxyChains-"VERSION
-// " (http://proxychains.sf.net)\n");
-
- get_chain_data(proxychains_pd,&proxychains_proxy_count,&proxychains_ct);
+// " (http://proxychains.sf.net)\n");
+ get_chain_data(proxychains_pd,&proxychains_proxy_count,&proxychains_ct,localnet);
+
true_connect = (connect_t) dlsym(RTLD_NEXT, "connect");
if (!true_connect) {
@@ -140,11 +165,12 @@
static inline void get_chain_data(
proxy_data *pd,
unsigned int *proxy_count,
- chain_type *ct)
+ chain_type *ct,
+ my_network *subnets)
{
- int count=0,port_n=0,list=0;
+ int count=0,port_n=0,list=0,subcount=0;
char buff[1024],type[1024],host[1024],user[1024];
FILE* file;
@@ -170,7 +196,11 @@
if(buff[strspn(buff," ")]!='#') {
if(list) {
bzero(&pd[count], sizeof(proxy_data));
- pd[count].ps=PLAY_STATE;
+
+ bzero(&subnets[subcount], sizeof(my_network));
+
+ 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);
@@ -182,6 +212,12 @@
pd[count].pt=SOCKS4_TYPE;
}else if(!strcmp(type,"socks5")) {
pd[count].pt=SOCKS5_TYPE;
+ } else if(!strcmp(type,"localnet")) {
+ subnets[subcount].subnetwork=inet_addr(host);
+ subnets[subcount].subnetmask=inet_addr(pd[count].user);
+ subnets[subcount].valid=PTRUE;
+ subnets[subcount + 1].valid=PFALSE;
+ subcount++;
}else continue;
if( pd[count].ip && pd[count].ip!=-1 && port_n)
@@ -223,13 +259,23 @@
int connect (int sock, const struct sockaddr *addr, unsigned int len)
{
int socktype=0,optlen=0,flags=0,ret=0;
-
+ int lnnum=0;
if(!init_l)
init_lib();
optlen=sizeof(socktype);
getsockopt(sock,SOL_SOCKET,SO_TYPE,&socktype,&optlen);
if (! (SOCKFAMILY(*addr)==AF_INET && socktype==SOCK_STREAM))
return true_connect(sock,addr,len);
+
+ get_chain_data(proxychains_pd,&proxychains_proxy_count,&proxychains_ct,localnet);
+ for (lnnum = 0; localnet[lnnum].valid == PTRUE; lnnum++)
+ {
+ if (( satosin(*addr)->sin_addr.s_addr & localnet[lnnum].subnetmask) == localnet[lnnum].subnetwork)
+ {
+ return true_connect(sock,addr,len);
+ }
+ }
+
flags=fcntl(sock, F_GETFL, 0);
if(flags & O_NONBLOCK)
fcntl(sock, F_SETFL, !O_NONBLOCK);
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