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Diffstat (limited to 'src/lib/protocols/pando.c')
| -rw-r--r-- | src/lib/protocols/pando.c | 167 |
1 files changed, 0 insertions, 167 deletions
diff --git a/src/lib/protocols/pando.c b/src/lib/protocols/pando.c deleted file mode 100644 index ece78559d..000000000 --- a/src/lib/protocols/pando.c +++ /dev/null @@ -1,167 +0,0 @@ -/* - * pando.c - * - * Copyright (C) 2014 Tomasz Bujlow <tomasz@skatnet.dk> - * - * The signature is based on the Libprotoident library. - * - * 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_PANDO - -#include "ndpi_api.h" - -static void ndpi_int_pando_add_connection(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow) { - ndpi_set_detected_protocol(ndpi_struct, flow, NDPI_PROTOCOL_PANDO, NDPI_PROTOCOL_UNKNOWN); -} - -static void ndpi_check_pando_tcp(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow) { - struct ndpi_packet_struct *packet = &flow->packet; - u_int32_t payload_len = packet->payload_packet_len; - - if (ndpi_match_strprefix(packet->payload, payload_len, "\x0ePan")) { - NDPI_LOG_INFO(ndpi_struct, "Found PANDO\n"); - ndpi_int_pando_add_connection(ndpi_struct, flow); - } -} - -static void ndpi_check_pando_udp(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow) { - struct ndpi_packet_struct *packet = &flow->packet; - u_int32_t payload_len = packet->payload_packet_len; - - /* Check if we so far detected the protocol in the request or not. */ - NDPI_LOG_DBG2(ndpi_struct, "PANDO stage %u: \n", flow->pando_stage); - if (flow->pando_stage == 0) { - - if ((payload_len >= 4) && (packet->payload[0] == 0x00) && (packet->payload[1] == 0x00) && (packet->payload[2] == 0x00) && (packet->payload[3] == 0x09)) { - NDPI_LOG_DBG2(ndpi_struct, "Possible PANDO request detected, we will look further for the response..\n"); - - /* Encode the direction of the packet in the stage, so we will know when we need to look for the response packet. */ - flow->pando_stage = packet->packet_direction + 1; // packet_direction 0: stage 1, packet_direction 1: stage 2 - return; - } - - if (ndpi_match_strprefix(packet->payload, payload_len, "UDPA")) { - NDPI_LOG_DBG2(ndpi_struct, "Possible PANDO request detected, we will look further for the response..\n"); - - /* Encode the direction of the packet in the stage, so we will know when we need to look for the response packet. */ - flow->pando_stage = packet->packet_direction + 3; // packet_direction 0: stage 3, packet_direction 1: stage 4 - return; - } - - if (ndpi_match_strprefix(packet->payload, payload_len, "UDPR") || ndpi_match_strprefix(packet->payload, payload_len, "UDPE")) { - NDPI_LOG_DBG2(ndpi_struct, "Possible PANDO request detected, we will look further for the response..\n"); - - /* Encode the direction of the packet in the stage, so we will know when we need to look for the response packet. */ - flow->pando_stage = packet->packet_direction + 5; // packet_direction 0: stage 5, packet_direction 1: stage 6 - return; - } - - } else if ((flow->pando_stage == 1) || (flow->pando_stage == 2)) { - - /* At first check, if this is for sure a response packet (in another direction. If not, do nothing now and return. */ - if ((flow->pando_stage - packet->packet_direction) == 1) { - return; - } - - /* This is a packet in another direction. Check if we find the proper response. */ - if ((payload_len == 0) || ((payload_len >= 4) && (packet->payload[0] == 0x00) && (packet->payload[1] == 0x00) && (packet->payload[2] == 0x00) && (packet->payload[3] == 0x09))) { - NDPI_LOG_INFO(ndpi_struct, "found PANDO\n"); - ndpi_int_pando_add_connection(ndpi_struct, flow); - } else { - NDPI_LOG_DBG2(ndpi_struct, "The reply did not seem to belong to PANDO, resetting the stage to 0..\n"); - flow->pando_stage = 0; - } - - } else if ((flow->pando_stage == 3) || (flow->pando_stage == 4)) { - - /* At first check, if this is for sure a response packet (in another direction. If not, do nothing now and return. */ - if ((flow->pando_stage - packet->packet_direction) == 3) { - return; - } - - /* This is a packet in another direction. Check if we find the proper response. */ - if ((payload_len == 0) || (ndpi_match_strprefix(packet->payload, payload_len, "UDPR") || ndpi_match_strprefix(packet->payload, payload_len, "UDPE"))) { - NDPI_LOG_INFO(ndpi_struct, "found PANDO\n"); - ndpi_int_pando_add_connection(ndpi_struct, flow); - } else { - NDPI_LOG_DBG2(ndpi_struct, "The reply did not seem to belong to PANDO, resetting the stage to 0..\n"); - flow->pando_stage = 0; - } - - } else if ((flow->pando_stage == 5) || (flow->pando_stage == 6)) { - - /* At first check, if this is for sure a response packet (in another direction. If not, do nothing now and return. */ - if ((flow->pando_stage - packet->packet_direction) == 5) { - return; - } - - /* This is a packet in another direction. Check if we find the proper response. */ - if (ndpi_match_strprefix(packet->payload, payload_len, "UDPA")) { - NDPI_LOG_INFO(ndpi_struct, "found PANDO\n"); - ndpi_int_pando_add_connection(ndpi_struct, flow); - } else { - NDPI_LOG_DBG2(ndpi_struct, "The reply did not seem to belong to PANDO, resetting the stage to 0\n"); - flow->pando_stage = 0; - } - } -} - -void ndpi_search_pando(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow) { - struct ndpi_packet_struct *packet = &flow->packet; - - NDPI_LOG_DBG(ndpi_struct, "search PANDO\n"); - /* Break after 20 packets. */ - if (flow->packet_counter > 20) { - NDPI_EXCLUDE_PROTO(ndpi_struct, flow); - return; - } - - /* skip marked or retransmitted packets */ - if (packet->tcp_retransmission != 0) { - return; - } - - if (packet->detected_protocol_stack[0] == NDPI_PROTOCOL_PANDO) { - return; - } - - ndpi_check_pando_tcp(ndpi_struct, flow); - - if (packet->detected_protocol_stack[0] == NDPI_PROTOCOL_PANDO) { - return; - } - - ndpi_check_pando_udp(ndpi_struct, flow); -} - - -void init_pando_dissector(struct ndpi_detection_module_struct *ndpi_struct, u_int32_t *id, NDPI_PROTOCOL_BITMASK *detection_bitmask) -{ - ndpi_set_bitmask_protocol_detection("Pando_Media_Booster", ndpi_struct, detection_bitmask, *id, - NDPI_PROTOCOL_PANDO, - ndpi_search_pando, - NDPI_SELECTION_BITMASK_PROTOCOL_V4_V6_TCP_OR_UDP_WITHOUT_RETRANSMISSION, - SAVE_DETECTION_BITMASK_AS_UNKNOWN, - ADD_TO_DETECTION_BITMASK); - - *id += 1; -} |