diff options
Diffstat (limited to 'src/lib/protocols/armagetron.c')
| -rw-r--r-- | src/lib/protocols/armagetron.c | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/src/lib/protocols/armagetron.c b/src/lib/protocols/armagetron.c new file mode 100644 index 000000000..6c5064fda --- /dev/null +++ b/src/lib/protocols/armagetron.c @@ -0,0 +1,102 @@ +/* + * armagetron.c + * + * Copyright (C) 2009-2011 by ipoque GmbH + * Copyright (C) 2011-15 - ntop.org + * + * 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 files */ +#include "ndpi_protocols.h" +#ifdef NDPI_PROTOCOL_ARMAGETRON + + +static void ndpi_int_armagetron_add_connection(struct ndpi_detection_module_struct *ndpi_struct, + struct ndpi_flow_struct *flow) +{ + + ndpi_int_add_connection(ndpi_struct, flow, NDPI_PROTOCOL_ARMAGETRON, NDPI_REAL_PROTOCOL); +} + +void ndpi_search_armagetron_udp(struct ndpi_detection_module_struct *ndpi_struct, struct ndpi_flow_struct *flow) +{ + struct ndpi_packet_struct *packet = &flow->packet; + // struct ndpi_id_struct *src=ndpi_struct->src; + // struct ndpi_id_struct *dst=ndpi_struct->dst; + + NDPI_LOG(NDPI_PROTOCOL_ARMAGETRON, ndpi_struct, NDPI_LOG_DEBUG, "search armagetron.\n"); + + + if (packet->payload_packet_len > 10) { + /* login request */ + if (get_u_int32_t(packet->payload, 0) == htonl(0x000b0000)) { + const u_int16_t dataLength = ntohs(get_u_int16_t(packet->payload, 4)); + if (dataLength == 0 || dataLength * 2 + 8 != packet->payload_packet_len) + goto exclude; + if (get_u_int16_t(packet->payload, 6) == htons(0x0008) + && get_u_int16_t(packet->payload, packet->payload_packet_len - 2) == 0) { + NDPI_LOG(NDPI_PROTOCOL_ARMAGETRON, ndpi_struct, NDPI_LOG_DEBUG, "detected armagetron.\n"); + ndpi_int_armagetron_add_connection(ndpi_struct, flow); + return; + } + } + /* sync_msg */ + if (packet->payload_packet_len == 16 && get_u_int16_t(packet->payload, 0) == htons(0x001c) + && get_u_int16_t(packet->payload, 2) != 0) { + const u_int16_t dataLength = ntohs(get_u_int16_t(packet->payload, 4)); + if (dataLength != 4) + goto exclude; + if (get_u_int32_t(packet->payload, 6) == htonl(0x00000500) && get_u_int32_t(packet->payload, 6 + 4) == htonl(0x00010000) + && get_u_int16_t(packet->payload, packet->payload_packet_len - 2) == 0) { + NDPI_LOG(NDPI_PROTOCOL_ARMAGETRON, ndpi_struct, NDPI_LOG_DEBUG, "detected armagetron.\n"); + ndpi_int_armagetron_add_connection(ndpi_struct, flow); + return; + } + } + + /* net_sync combination */ + if (packet->payload_packet_len > 50 && get_u_int16_t(packet->payload, 0) == htons(0x0018) + && get_u_int16_t(packet->payload, 2) != 0) { + u_int16_t val; + const u_int16_t dataLength = ntohs(get_u_int16_t(packet->payload, 4)); + if (dataLength == 0 || dataLength * 2 + 8 > packet->payload_packet_len) + goto exclude; + val = get_u_int16_t(packet->payload, 6 + 2); + if (val == get_u_int16_t(packet->payload, 6 + 6)) { + val = ntohs(get_u_int16_t(packet->payload, 6 + 8)); + if ((6 + 10 + val + 4) < packet->payload_packet_len + && (get_u_int32_t(packet->payload, 6 + 10 + val) == htonl(0x00010000) + || get_u_int32_t(packet->payload, 6 + 10 + val) == htonl(0x00000001)) + && get_u_int16_t(packet->payload, packet->payload_packet_len - 2) == 0) { + NDPI_LOG(NDPI_PROTOCOL_ARMAGETRON, ndpi_struct, NDPI_LOG_DEBUG, "detected armagetron.\n"); + ndpi_int_armagetron_add_connection(ndpi_struct, flow); + return; + } + } + } + } + + exclude: + NDPI_LOG(NDPI_PROTOCOL_ARMAGETRON, ndpi_struct, NDPI_LOG_DEBUG, "exclude armagetron.\n"); + NDPI_ADD_PROTOCOL_TO_BITMASK(flow->excluded_protocol_bitmask, NDPI_PROTOCOL_ARMAGETRON); +} + +#endif |