Akkariin/proxychains-ng
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alternatively allow specifying proxy addresses via URL-style strings

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e.g. socks5://user:pass@ip:port

code taken from my library "rocksock"[0].

[0]: https://github.com/rofl0r/rocksock
This commit is contained in:
rofl0r 2018-07-26 23:12:00 +01:00
parent d21af711d8
commit 1c8f8e4e7e
1 changed files with 102 additions and 3 deletions
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105
src/libproxychains.c
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@ -160,6 +160,103 @@ static void gcc_init(void) {
} }
#endif #endif
typedef enum {
RS_PT_NONE = 0,
RS_PT_SOCKS4,
RS_PT_SOCKS5,
RS_PT_HTTP
} rs_proxyType;
/*
proxy_from_string() taken from rocksock network I/O library (C) rofl0r
valid inputs:
socks5://user:password@proxy.domain.com:port
socks5://proxy.domain.com:port
socks4://proxy.domain.com:port
http://user:password@proxy.domain.com:port
http://proxy.domain.com:port
supplying port number is obligatory.
user:pass@ part is optional for http and socks5.
however, user:pass authentication is currently not implemented for http proxies.
return 1 on success, 0 on error.
*/
static int proxy_from_string(const char *proxystring,
char *type_buf,
char* host_buf,
int *port_n,
char *user_buf,
char* pass_buf)
{
const char* p;
rs_proxyType proxytype;
size_t next_token = 6, ul = 0, pl = 0, hl;
if(!proxystring[0] || !proxystring[1] || !proxystring[2] || !proxystring[3] || !proxystring[4] || !proxystring[5]) goto inv_string;
if(*proxystring == 's') {
switch(proxystring[5]) {
case '5': proxytype = RS_PT_SOCKS5; break;
case '4': proxytype = RS_PT_SOCKS4; break;
default: goto inv_string;
}
} else if(*proxystring == 'h') {
proxytype = RS_PT_HTTP;
next_token = 4;
} else goto inv_string;
if(
proxystring[next_token++] != ':' ||
proxystring[next_token++] != '/' ||
proxystring[next_token++] != '/') goto inv_string;
const char *at = strchr(proxystring+next_token, '@');
if(at) {
if(proxytype == RS_PT_SOCKS4)
return 0;
p = strchr(proxystring+next_token, ':');
if(!p || p >= at) goto inv_string;
const char *u = proxystring+next_token;
ul = p-u;
p++;
pl = at-p;
if(proxytype == RS_PT_SOCKS5 && (ul > 255 || pl > 255))
return 0;
memcpy(user_buf, u, ul);
user_buf[ul]=0;
memcpy(pass_buf, p, pl);
pass_buf[pl]=0;
next_token += 2+ul+pl;
} else {
user_buf[0]=0;
pass_buf[0]=0;
}
const char* h = proxystring+next_token;
p = strchr(h, ':');
if(!p) goto inv_string;
hl = p-h;
if(hl > 255)
return 0;
memcpy(host_buf, h, hl);
host_buf[hl]=0;
*port_n = atoi(p+1);
switch(proxytype) {
case RS_PT_SOCKS4:
strcpy(type_buf, "socks4");
break;
case RS_PT_SOCKS5:
strcpy(type_buf, "socks5");
break;
case RS_PT_HTTP:
strcpy(type_buf, "http");
break;
default:
return 0;
}
return 1;
inv_string:
return 0;
}
/* get configuration from config file */ /* get configuration from config file */
static void get_chain_data(proxy_data * pd, unsigned int *proxy_count, chain_type * ct) { static void get_chain_data(proxy_data * pd, unsigned int *proxy_count, chain_type * ct) {
int count = 0, port_n = 0, list = 0; int count = 0, port_n = 0, list = 0;
@ -202,9 +299,11 @@ static void get_chain_data(proxy_data * pd, unsigned int *proxy_count, chain_typ
int ret = sscanf(buff, "%s %s %d %s %s", type, host, &port_n, pd[count].user, pd[count].pass); int ret = sscanf(buff, "%s %s %d %s %s", type, host, &port_n, pd[count].user, pd[count].pass);
if(ret < 3 || ret == EOF) { if(ret < 3 || ret == EOF) {
inv: if(!proxy_from_string(buff, type, host, &port_n, pd[count].user, pd[count].pass)) {
fprintf(stderr, "error: invalid item in proxylist section: %s", buff); inv:
exit(1); fprintf(stderr, "error: invalid item in proxylist section: %s", buff);
exit(1);
}
} }
memset(&pd[count].ip, 0, sizeof(pd[count].ip)); memset(&pd[count].ip, 0, sizeof(pd[count].ip));