static void ndpi_check_pplive_udp2(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. */ if (flow->pplive_stage2 == 0) { NDPI_LOG(NDPI_PROTOCOL_PPLIVE, ndpi_struct, NDPI_LOG_DEBUG, "PPLIVE stage 0: \n"); if ((payload_len == 57) && match_first_bytes(packet->payload, "\xe9\x03\x41\x01")) { NDPI_LOG(NDPI_PROTOCOL_PPLIVE, ndpi_struct, NDPI_LOG_DEBUG, "Possible PPLIVE 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->pplive_stage2 = packet->packet_direction + 1; // packet_direction 0: stage 1, packet_direction 1: stage 2 } } else { NDPI_LOG(NDPI_PROTOCOL_PPLIVE, ndpi_struct, NDPI_LOG_DEBUG, "PPLIVE stage %u: \n", flow->pplive_stage2); /* At first check, if this is for sure a response packet (in another direction. If not, do nothing now and return. */ if ((flow->pplive_stage2 - packet->packet_direction) == 1) { return; } /* This is a packet in another direction. Check if we find the proper response. */ if (payload_len == 0) { NDPI_LOG(NDPI_PROTOCOL_PPLIVE, ndpi_struct, NDPI_LOG_DEBUG, "Found PPLIVE.\n"); ndpi_int_pplive_add_connection(ndpi_struct, flow); } else { NDPI_LOG(NDPI_PROTOCOL_PPLIVE, ndpi_struct, NDPI_LOG_DEBUG, "The reply did not seem to belong to PPLIVE, resetting the stage to 0...\n"); flow->pplive_stage2 = 0; } } }
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 ((payload_len > 0) && match_first_bytes(packet->payload, "\x0ePan")) { NDPI_LOG(NDPI_PROTOCOL_PANDO, ndpi_struct, NDPI_LOG_DEBUG, "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. */ if (flow->pando_stage == 0) { NDPI_LOG(NDPI_PROTOCOL_PANDO, ndpi_struct, NDPI_LOG_DEBUG, "PANDO stage 0: \n"); if ((payload_len >= 4) && (packet->payload[0] == 0x00) && (packet->payload[1] == 0x00) && (packet->payload[2] == 0x00) && (packet->payload[3] == 0x09)) { NDPI_LOG(NDPI_PROTOCOL_PANDO, ndpi_struct, NDPI_LOG_DEBUG, "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 ((payload_len > 0) && match_first_bytes(packet->payload, "UDPA")) { NDPI_LOG(NDPI_PROTOCOL_PANDO, ndpi_struct, NDPI_LOG_DEBUG, "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 ((payload_len > 0) && (match_first_bytes(packet->payload, "UDPR") || match_first_bytes(packet->payload, "UDPE"))) { NDPI_LOG(NDPI_PROTOCOL_PANDO, ndpi_struct, NDPI_LOG_DEBUG, "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)) { NDPI_LOG(NDPI_PROTOCOL_PANDO, ndpi_struct, NDPI_LOG_DEBUG, "PANDO stage %u: \n", flow->pando_stage); /* 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(NDPI_PROTOCOL_PANDO, ndpi_struct, NDPI_LOG_DEBUG, "Found PANDO.\n"); ndpi_int_pando_add_connection(ndpi_struct, flow); } else { NDPI_LOG(NDPI_PROTOCOL_PANDO, ndpi_struct, NDPI_LOG_DEBUG, "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)) { NDPI_LOG(NDPI_PROTOCOL_PANDO, ndpi_struct, NDPI_LOG_DEBUG, "PANDO stage %u: \n", flow->pando_stage); /* 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) || match_first_bytes(packet->payload, "UDPR") || match_first_bytes(packet->payload, "UDPE")) { NDPI_LOG(NDPI_PROTOCOL_PANDO, ndpi_struct, NDPI_LOG_DEBUG, "Found PANDO.\n"); ndpi_int_pando_add_connection(ndpi_struct, flow); } else { NDPI_LOG(NDPI_PROTOCOL_PANDO, ndpi_struct, NDPI_LOG_DEBUG, "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)) { NDPI_LOG(NDPI_PROTOCOL_PANDO, ndpi_struct, NDPI_LOG_DEBUG, "PANDO stage %u: \n", flow->pando_stage); /* 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 ((payload_len > 0) && match_first_bytes(packet->payload, "UDPA")) { NDPI_LOG(NDPI_PROTOCOL_PANDO, ndpi_struct, NDPI_LOG_DEBUG, "Found PANDO.\n"); ndpi_int_pando_add_connection(ndpi_struct, flow); } else { NDPI_LOG(NDPI_PROTOCOL_PANDO, ndpi_struct, NDPI_LOG_DEBUG, "The reply did not seem to belong to PANDO, resetting the stage to 0...\n"); flow->pando_stage = 0; } } }
static void ndpi_check_steam_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 (flow->steam_stage == 0) { NDPI_LOG(NDPI_PROTOCOL_STEAM, ndpi_struct, NDPI_LOG_DEBUG, "STEAM stage 0: \n"); if (((payload_len == 1) || (payload_len == 4) || (payload_len == 5)) && match_first_bytes(packet->payload, "\x01\x00\x00\x00")) { NDPI_LOG(NDPI_PROTOCOL_STEAM, ndpi_struct, NDPI_LOG_DEBUG, "Possible STEAM 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->steam_stage = packet->packet_direction + 1; // packet_direction 0: stage 1, packet_direction 1: stage 2 return; } if (((payload_len == 1) || (payload_len == 4) || (payload_len == 5)) && (packet->payload[0] == 0x00) && (packet->payload[1] == 0x00) && (packet->payload[2] == 0x00)) { NDPI_LOG(NDPI_PROTOCOL_STEAM, ndpi_struct, NDPI_LOG_DEBUG, "Possible STEAM 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->steam_stage = packet->packet_direction + 3; // packet_direction 0: stage 3, packet_direction 1: stage 4 return; } } else if ((flow->steam_stage == 1) || (flow->steam_stage == 2)) { NDPI_LOG(NDPI_PROTOCOL_STEAM, ndpi_struct, NDPI_LOG_DEBUG, "STEAM stage %u: \n", flow->steam_stage); /* At first check, if this is for sure a response packet (in another direction. If not, do nothing now and return. */ if ((flow->steam_stage - packet->packet_direction) == 1) { return; } /* This is a packet in another direction. Check if we find the proper response. */ if (((payload_len == 1) || (payload_len == 4) || (payload_len == 5)) && (packet->payload[0] == 0x00) && (packet->payload[1] == 0x00) && (packet->payload[2] == 0x00)) { NDPI_LOG(NDPI_PROTOCOL_STEAM, ndpi_struct, NDPI_LOG_DEBUG, "Found STEAM.\n"); ndpi_int_steam_add_connection(ndpi_struct, flow); } else { NDPI_LOG(NDPI_PROTOCOL_STEAM, ndpi_struct, NDPI_LOG_DEBUG, "The reply did not seem to belong to STEAM, resetting the stage to 0...\n"); flow->steam_stage = 0; } } else if ((flow->steam_stage == 3) || (flow->steam_stage == 4)) { NDPI_LOG(NDPI_PROTOCOL_STEAM, ndpi_struct, NDPI_LOG_DEBUG, "STEAM stage %u: \n", flow->steam_stage); /* At first check, if this is for sure a response packet (in another direction. If not, do nothing now and return. */ if ((flow->steam_stage - packet->packet_direction) == 3) { return; } /* This is a packet in another direction. Check if we find the proper response. */ if (((payload_len == 1) || (payload_len == 4) || (payload_len == 5)) && match_first_bytes(packet->payload, "\x01\x00\x00\x00")) { NDPI_LOG(NDPI_PROTOCOL_STEAM, ndpi_struct, NDPI_LOG_DEBUG, "Found STEAM.\n"); ndpi_int_steam_add_connection(ndpi_struct, flow); } else { NDPI_LOG(NDPI_PROTOCOL_STEAM, ndpi_struct, NDPI_LOG_DEBUG, "The reply did not seem to belong to STEAM, resetting the stage to 0...\n"); flow->steam_stage = 0; } } }