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Add support for localnet config entry in proxychains.conf file.

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This commit is contained in:
Adam Hamsik 2011-02-25 17:18:37 +02:00
commit e928b25735
2 changed files with 64 additions and 8 deletions
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6
proxychains/core.h
View File

@ -17,6 +17,7 @@
#ifndef __CORE_HEADER
#define __CORE_HEADER
#define BUFF_SIZE 8*1024 // used to read responses from proxies.
#define MAX_LOCALNET 1024
/*error codes*/
typedef enum
{
@ -34,6 +35,11 @@ typedef enum {DYNAMIC_TYPE,STRICT_TYPE,RANDOM_TYPE} chain_type;
typedef enum {PLAY_STATE,DOWN_STATE,BLOCKED_STATE,BUSY_STATE} proxy_state;
typedef enum {RANDOMLY,FIFOLY} select_type;
typedef struct
{
struct in_addr in_addr, netmask;
} localaddr_arg;
typedef struct
{
unsigned int ip;

66
proxychains/libproxychains.c
View File

@ -52,12 +52,14 @@ int proxychains_max_chain = 1;
int proxychains_quiet_mode = 0;
int proxychains_resolver = 0;
static int init_l = 0;
static inline void get_chain_data(
proxy_data *pd,
unsigned int *proxy_count,
chain_type *ct);
localaddr_arg localnet_addr[MAX_LOCALNET];
size_t num_localnet_addr = 0;
static void init_lib()
static inline void get_chain_data(proxy_data *pd, unsigned int *proxy_count,
chain_type *ct);
static void init_lib(void);
static void init_lib(void)
{
// proxychains_write_log("ProxyChains-"VERSION
// " (http://proxychains.sf.net)\n");
@ -150,6 +152,8 @@ static inline void get_chain_data(
int count=0,port_n=0,list=0;
char buff[1024],type[1024],host[1024],user[1024];
char *env;
char local_in_addr[16], local_netmask[16];
FILE* file;
if(proxychains_got_chain_data)
@ -213,7 +217,34 @@ static inline void get_chain_data(
sscanf(buff,"%s %d",user,&tcp_read_time_out) ;
}else if(strstr(buff,"tcp_connect_time_out")){
sscanf(buff,"%s %d",user,&tcp_connect_time_out) ;
}else if(strstr(buff,"chain_len")){
}
else if(strstr(buff,"localnet"))
{
sscanf(buff,"%s %16[^/] %16s", user, local_in_addr, local_netmask) ;
PDEBUG("added localnet = %s%s\n", local_in_addr, local_netmask);
if (num_localnet_addr < MAX_LOCALNET)
{
int error;
error = inet_pton(AF_INET, local_in_addr, &localnet_addr[num_localnet_addr].in_addr);
if (error <= 0)
{
fprintf(stderr, "localnet address error\n");
exit(1);
}
error = inet_pton(AF_INET, local_netmask + 1, &localnet_addr[num_localnet_addr].netmask);
if (error <= 0)
{
fprintf(stderr, "localnet address error\n");
exit(1);
}
++num_localnet_addr;
}
else
{
fprintf(stderr, "# of localnet exceed %d.\n", MAX_LOCALNET);
}
}
else if(strstr(buff,"chain_len")){
char *pc;int len;
pc=strchr(buff,'=');
len=atoi(++pc);
@ -236,6 +267,9 @@ static inline void get_chain_data(
int connect (int sock, const struct sockaddr *addr, unsigned int len)
{
int socktype=0,optlen=0,flags=0,ret=0;
char str[256];
struct in_addr *p_addr_in;
size_t i;
if(!init_l)
init_lib();
@ -243,6 +277,22 @@ int connect (int sock, const struct sockaddr *addr, unsigned int len)
getsockopt(sock,SOL_SOCKET,SO_TYPE,&socktype,&optlen);
if (! (SOCKFAMILY(*addr)==AF_INET && socktype==SOCK_STREAM))
return true_connect(sock,addr,len);
p_addr_in = &((struct sockaddr_in *)addr)->sin_addr;
//PDEBUG("localnet: %s; ", inet_ntop(AF_INET,&in_addr_localnet, str, sizeof(str)));
//PDEBUG("netmask: %s; " , inet_ntop(AF_INET, &in_addr_netmask, str, sizeof(str)));
//PDEBUG("target: %s\n", inet_ntop(AF_INET, p_addr_in, str, sizeof(str)));
for (i = 0; i < num_localnet_addr; i++) {
if ((localnet_addr[i].in_addr.s_addr & localnet_addr[i].netmask.s_addr)
== (p_addr_in->s_addr & localnet_addr[i].netmask.s_addr))
{
PDEBUG("accessing localnet using true_connect\n");
return true_connect(sock,addr,len);
}
}
flags=fcntl(sock, F_GETFL, 0);
if(flags & O_NONBLOCK)
fcntl(sock, F_SETFL, !O_NONBLOCK);
@ -321,8 +371,8 @@ int getnameinfo (const struct sockaddr * sa,
PDEBUG("getnameinfo: %s %s\n", host, serv);
return ret;
}
struct hostent *gethostbyaddr (const void *addr, socklen_t len,
int type)
struct hostent *gethostbyaddr (const void *addr, socklen_t len, int type)
{
PDEBUG("TODO: gethostbyaddr hook\n");
if(!init_l)