Add basic support for SOCKS 4 and HTTP CONNECT proxies.

[tinc] / src / meta.c

diff --git a/src/meta.c b/src/meta.c
index 4c52464..1b34246 100644 (file)
--- a/src/meta.c
+++ b/src/meta.c
@@ -177,7 +177,15 @@ bool receive_meta(connection_t *c) {
 
                if(c->tcplen) {
                        if(c->tcplen <= c->buflen) {
 
                if(c->tcplen) {
                        if(c->tcplen <= c->buflen) {

-                               receive_tcppacket(c, c->buffer, c->tcplen);
+                               if(proxytype == PROXY_SOCKS4 && c->allow_request == ID) {
+                                       if(c->buffer[0] == 0 && c->buffer[1] == 0x5a) {
+                                               logger(LOG_DEBUG, "Proxy request granted");
+                                       } else {
+                                               logger(LOG_ERR, "Proxy request rejected");
+                                               return false;
+                                       }
+                               } else 
+                                       receive_tcppacket(c, c->buffer, c->tcplen);

 
                                c->buflen -= c->tcplen;
                                lenin -= c->tcplen - oldlen;
 
                                c->buflen -= c->tcplen;
                                lenin -= c->tcplen - oldlen;