- while(c->inbuf.len) {
- /* Are we receiving a TCPpacket? */
-
- if(c->tcplen) {
- char *tcpbuffer = buffer_read(&c->inbuf, c->tcplen);
- if(!tcpbuffer)
- break;
-
- if(!c->node) {
- if(c->outgoing && proxytype == PROXY_SOCKS4 && c->allow_request == ID) {
- if(tcpbuffer[0] == 0 && tcpbuffer[1] == 0x5a) {
- logger(DEBUG_CONNECTIONS, LOG_DEBUG, "Proxy request granted");
- } else {
- logger(DEBUG_CONNECTIONS, LOG_ERR, "Proxy request rejected");
- return false;
- }
- } else if(c->outgoing && proxytype == PROXY_SOCKS5 && c->allow_request == ID) {
- if(tcpbuffer[0] != 5) {
- logger(DEBUG_CONNECTIONS, LOG_ERR, "Invalid response from proxy server");
- return false;
- }
- if(tcpbuffer[1] == (char)0xff) {
- logger(DEBUG_CONNECTIONS, LOG_ERR, "Proxy request rejected: unsuitable authentication method");
- return false;
- }
- if(tcpbuffer[2] != 5) {
- logger(DEBUG_CONNECTIONS, LOG_ERR, "Invalid response from proxy server");
- return false;
- }
- if(tcpbuffer[3] == 0) {
- logger(DEBUG_CONNECTIONS, LOG_DEBUG, "Proxy request granted");
- } else {
- logger(DEBUG_CONNECTIONS, LOG_DEBUG, "Proxy request rejected");
- return false;
- }
- } else {
- logger(DEBUG_CONNECTIONS, LOG_ERR, "c->tcplen set but c->node is NULL!");
- abort();
- }
- } else {
- if(c->allow_request == ALL) {
- receive_tcppacket(c, tcpbuffer, c->tcplen);
- } else {
- logger(DEBUG_CONNECTIONS, LOG_ERR, "Got unauthorized TCP packet from %s (%s)", c->name, c->hostname);
- return false;
- }
- }
-
- c->tcplen = 0;
- }
-
- /* Otherwise we are waiting for a request */
-
- char *request = buffer_readline(&c->inbuf);
- if(request) {
- bool result = receive_request(c, request);
- if(!result)
- return false;
- continue;
- } else {
- break;
- }
- }
- } while(inlen);