diff options
Diffstat (limited to 'src/lib/protocols/csgo.c')
| -rw-r--r-- | src/lib/protocols/csgo.c | 140 |
1 files changed, 0 insertions, 140 deletions
diff --git a/src/lib/protocols/csgo.c b/src/lib/protocols/csgo.c deleted file mode 100644 index d1a11950a..000000000 --- a/src/lib/protocols/csgo.c +++ /dev/null @@ -1,140 +0,0 @@ -/* - * csgo.c - * - * Copyright (C) 2016-2017 Vitaly Lavrov <vel21ripn@gmail.com> - * - * This file is part of nDPI, an open source deep packet inspection - * library based on the OpenDPI and PACE technology by ipoque GmbH - * - * nDPI is free software: you can redistribute it and/or modify - * it under the terms of the GNU Lesser General Public License as published by - * the Free Software Foundation, either version 3 of the License, or - * (at your option) any later version. - * - * nDPI is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public License - * along with nDPI. If not, see <http://www.gnu.org/licenses/>. - * - */ -#include "ndpi_protocol_ids.h" - -#define NDPI_CURRENT_PROTO NDPI_PROTOCOL_CSGO - -#include "ndpi_api.h" -#include "ndpi_private.h" - -static void ndpi_search_csgo(struct ndpi_detection_module_struct* ndpi_struct, struct ndpi_flow_struct* flow) { - struct ndpi_packet_struct* packet = &ndpi_struct->packet; - - if(packet->udp != NULL) { - if(packet->payload_packet_len < sizeof(uint32_t)) { - NDPI_LOG_DBG2(ndpi_struct, "Short csgo packet\n"); - if(flow->packet_counter > 5) - NDPI_EXCLUDE_PROTO(ndpi_struct, flow); - return; - } - - uint32_t w = htonl(get_u_int32_t(packet->payload, 0)); - NDPI_LOG_DBG2(ndpi_struct, "CSGO: word %08x\n", w); - - if(!flow->l4.udp.csgo_state && packet->payload_packet_len == 23 && w == 0xfffffffful) { - if(!memcmp(packet->payload + 5, "connect0x", 9)) { - flow->l4.udp.csgo_state++; - memcpy(flow->l4.udp.csgo_strid, packet->payload + 5, 18); - NDPI_LOG_DBG2(ndpi_struct, "Found csgo connect0x\n"); - return; - } - } - - if(flow->l4.udp.csgo_state == 1 && packet->payload_packet_len >= 42 && w == 0xfffffffful) { - if(!memcmp(packet->payload + 24, flow->l4.udp.csgo_strid, 18)) { - flow->l4.udp.csgo_state++; - ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_CSGO, NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI); - NDPI_LOG_INFO( ndpi_struct, "found csgo connect0x reply\n"); - return; - } - } - - if(packet->payload_packet_len == 8 && ( w == 0x3a180000 || w == 0x39180000) ) { - NDPI_LOG_INFO( ndpi_struct, "found csgo udp 8b\n"); - ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_CSGO, NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI); - return; - } - - if(packet->payload_packet_len >= 36 && w == 0x01007364) { - uint32_t w2 = htonl(get_u_int32_t(packet->payload, 4)); - if(w2 == 0x70696e67) { - NDPI_LOG_INFO( ndpi_struct, "found csgo udp ping\n"); - ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_CSGO, NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI); - return; - } - } - - if(packet->payload_packet_len > 6 && - flow->l4.udp.csgo_s2 < 3 && (w & 0xffff0000ul) == 0x0d1d0000) { - uint32_t w2 = get_u_int32_t(packet->payload, 2); - if(packet->payload_packet_len == 13) { - if(!flow->l4.udp.csgo_s2) { - flow->l4.udp.csgo_id2 = w2; - flow->l4.udp.csgo_s2 = 1; - NDPI_LOG_DBG2( ndpi_struct, "Found csgo udp 0d1d step1\n"); - return; - } - - if(flow->l4.udp.csgo_s2 == 1 && flow->l4.udp.csgo_id2 == w2) { - NDPI_LOG_DBG2( ndpi_struct, "Found csgo udp 0d1d step1 DUP\n"); - return; - } - flow->l4.udp.csgo_s2 = 3; - return; - } - - if(packet->payload_packet_len == 15) { - if(flow->l4.udp.csgo_s2 == 1 && flow->l4.udp.csgo_id2 == w2) { - NDPI_LOG_INFO( ndpi_struct, "found csgo udp 0d1d\n"); - ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_CSGO, NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI); - return; - } - } - flow->l4.udp.csgo_s2 = 3; - } - - if(packet->payload_packet_len >= 140 && (w == 0x02124c6c || w == 0x02125c6c) && - !memcmp(&packet->payload[3], "lta\000mob\000tpc\000bhj\000bxd\000tae\000urg\000gkh\000", 32)) { - NDPI_LOG_INFO( ndpi_struct, "found csgo dictionary udp\n"); - ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_CSGO, NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI); - return; - } - - if(packet->payload_packet_len >= 33 && packet->iph && packet->iph->daddr == 0xffffffff && - !memcmp(&packet->payload[17], "LanSearch", 9)) { - NDPI_LOG_INFO( ndpi_struct, "found csgo LanSearch udp\n"); - ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_CSGO, NDPI_PROTOCOL_UNKNOWN, NDPI_CONFIDENCE_DPI); - return; - } - - if(w == 0) { - NDPI_EXCLUDE_PROTO(ndpi_struct, flow); - return; - } - } - - if(flow->packet_counter > 5) - NDPI_EXCLUDE_PROTO(ndpi_struct, flow); -} - -void init_csgo_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id) -{ - ndpi_set_bitmask_protocol_detection("CSGO", ndpi_struct, *id, - NDPI_PROTOCOL_CSGO, - ndpi_search_csgo, - NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_UDP_WITH_PAYLOAD, - SAVE_DETECTION_BITMASK_AS_UNKNOWN, - ADD_TO_DETECTION_BITMASK); - - *id += 1; -} |