static void ircd(void * data, char * name) { fs_node_t * tty = data; char * buf = malloc(4096); while (1) { char * result = fgets(buf, 4095, irc_socket); if (!result) continue; size_t len = strlen(buf); if (!len) continue; handle_irc_packet(tty, len, (unsigned char *)buf); } }
static int sd_tcpinput(int csocket, t_connection * c) { unsigned int currsize; t_packet * packet; currsize = conn_get_in_size(c); if (!*conn_get_in_queue(c)) { switch (conn_get_class(c)) { case conn_class_init: if (!(packet = packet_create(packet_class_init))) { eventlog(eventlog_level_error,"sd_tcpinput","could not allocate init packet for input"); return -1; } break; case conn_class_d2cs_bnetd: if (!(packet = packet_create(packet_class_d2cs_bnetd))) { eventlog(eventlog_level_error,"server_process","could not allocate d2cs_bnetd packet"); return -1; } break; case conn_class_bnet: if (!(packet = packet_create(packet_class_bnet))) { eventlog(eventlog_level_error,"sd_tcpinput","could not allocate bnet packet for input"); return -1; } break; case conn_class_file: if (!(packet = packet_create(packet_class_file))) { eventlog(eventlog_level_error,"sd_tcpinput","could not allocate file packet for input"); return -1; } break; case conn_class_bits: if (!(packet = packet_create(packet_class_bits))) { eventlog(eventlog_level_error,"sd_tcpinput","could not allocate BITS packet for input"); return -1; } break; case conn_class_defer: case conn_class_bot: case conn_class_irc: case conn_class_telnet: if (!(packet = packet_create(packet_class_raw))) { eventlog(eventlog_level_error,"sd_tcpinput","could not allocate raw packet for input"); return -1; } packet_set_size(packet,1); /* start by only reading one char */ break; case conn_class_auth: if (!(packet = packet_create(packet_class_auth))) { eventlog(eventlog_level_error,"sd_tcpinput","could not allocate auth packet for input"); return -1; } break; default: eventlog(eventlog_level_error,"sd_tcpinput","[%d] connection has bad class (closing connection)",conn_get_socket(c)); conn_destroy(c); return -1; } queue_push_packet(conn_get_in_queue(c),packet); packet_del_ref(packet); if (!*conn_get_in_queue(c)) return -1; /* push failed */ currsize = 0; } packet = queue_peek_packet((t_queue const * const *)conn_get_in_queue(c)); /* avoid warning */ switch (net_recv_packet(csocket,packet,&currsize)) { case -1: eventlog(eventlog_level_debug,"sd_tcpinput","[%d] read FAILED (closing connection)",conn_get_socket(c)); conn_destroy(c); return -1; case 0: /* still working on it */ /* eventlog(eventlog_level_debug,"sd_tcpinput","[%d] still reading \"%s\" packet (%u of %u bytes so far)",conn_get_socket(c),packet_get_class_str(packet),conn_get_in_size(c),packet_get_size(packet)); */ conn_set_in_size(c,currsize); break; case 1: /* done reading */ switch (conn_get_class(c)) { case conn_class_defer: { unsigned char const * const temp=packet_get_raw_data_const(packet,0); eventlog(eventlog_level_debug,"sd_tcpinput","[%d] got first packet byte %02x",conn_get_socket(c),(unsigned int)temp[0]); if (temp[0]==(unsigned char)0xff) /* HACK: thankfully all bnet packet types end with ff */ { conn_set_class(c,conn_class_bnet); conn_set_in_size(c,currsize); packet_set_class(packet,packet_class_bnet); eventlog(eventlog_level_debug,"sd_tcpinput","[%d] defered connection class is bnet",conn_get_socket(c)); } else { conn_set_class(c,conn_class_auth); conn_set_in_size(c,currsize); packet_set_class(packet,packet_class_auth); eventlog(eventlog_level_debug,"sd_tcpinput","[%d] defered connection class is auth",conn_get_socket(c)); } } break; case conn_class_bot: case conn_class_telnet: if (currsize<MAX_PACKET_SIZE) /* if we overflow, we can't wait for the end of the line. handle_*_packet() should take care of it */ { char const * const temp=packet_get_raw_data_const(packet,0); if ((temp[currsize-1]=='\003')||(temp[currsize-1]=='\004')) { /* we have to ignore these special characters, since * some bots even send them after login (eg. UltimateBot) */ currsize--; break; } if (temp[currsize-1]!='\r' && temp[currsize-1]!='\n') { conn_set_in_size(c,currsize); packet_set_size(packet,currsize+1); break; /* no end of line, get another char */ } } /* got a complete line or overflow, so: */ /*FALLTHRU*/ default: packet = queue_pull_packet(conn_get_in_queue(c)); if (hexstrm) { fprintf(hexstrm,"%d: recv class=%s[0x%02x] type=%s[0x%04x] length=%u\n", csocket, packet_get_class_str(packet),(unsigned int)packet_get_class(packet), packet_get_type_str(packet,packet_dir_from_client),packet_get_type(packet), packet_get_size(packet)); hexdump(hexstrm,packet_get_raw_data_const(packet,0),packet_get_size(packet)); } if (conn_get_class(c)==conn_class_bot || conn_get_class(c)==conn_class_telnet) /* NUL terminate the line to make life easier */ { char * const temp=packet_get_raw_data(packet,0); if (temp[currsize-1]=='\r' || temp[currsize-1]=='\n') temp[currsize-1] = '\0'; /* have to do it here instead of above so everything is intact for the hexdump */ } { int ret; switch (conn_get_class(c)) { case conn_class_bits: #ifdef WITH_BITS ret = handle_bits_packet(c,packet); #else eventlog(eventlog_level_error,"sd_tcpinput","[%d] BITS not enabled (closing connection)",conn_get_socket(c)); ret = -1; #endif break; case conn_class_init: ret = handle_init_packet(c,packet); break; case conn_class_bnet: ret = handle_bnet_packet(c,packet); break; case conn_class_d2cs_bnetd: ret = handle_d2cs_packet(c,packet); break; case conn_class_bot: ret = handle_bot_packet(c,packet); break; case conn_class_telnet: ret = handle_telnet_packet(c,packet); break; case conn_class_file: ret = handle_file_packet(c,packet); break; case conn_class_auth: ret = handle_auth_packet(c,packet); break; case conn_class_irc: ret = handle_irc_packet(c,packet); break; default: eventlog(eventlog_level_error,"sd_tcpinput","[%d] bad packet class %d (closing connection)",conn_get_socket(c),(int)packet_get_class(packet)); ret = -1; } packet_del_ref(packet); if (ret<0) { conn_destroy(c); return -1; } } conn_set_in_size(c,0); } } return 0; }