mirror of
https://github.com/vel21ripn/nDPI.git
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69 lines
2.6 KiB
C
69 lines
2.6 KiB
C
/*
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* xdmcp.c
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*
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* Copyright (C) 2009-2011 by ipoque GmbH
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* Copyright (C) 2011-15 - ntop.org
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*
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* This file is part of nDPI, an open source deep packet inspection
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* library based on the OpenDPI and PACE technology by ipoque GmbH
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*
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* nDPI is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* nDPI is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with nDPI. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "ndpi_protocols.h"
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#ifdef NDPI_PROTOCOL_XDMCP
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static void ndpi_int_xdmcp_add_connection(struct ndpi_detection_module_struct
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*ndpi_struct, struct ndpi_flow_struct *flow)
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{
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ndpi_int_add_connection(ndpi_struct, flow, NDPI_PROTOCOL_XDMCP, NDPI_REAL_PROTOCOL);
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}
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void ndpi_search_xdmcp(struct ndpi_detection_module_struct
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*ndpi_struct, struct ndpi_flow_struct *flow)
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{
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struct ndpi_packet_struct *packet = &flow->packet;
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// struct ndpi_id_struct *src=ndpi_struct->src;
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// struct ndpi_id_struct *dst=ndpi_struct->dst;
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NDPI_LOG(NDPI_PROTOCOL_XDMCP, ndpi_struct, NDPI_LOG_DEBUG, "search xdmcp.\n");
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if (packet->tcp != NULL && (ntohs(packet->tcp->dest) >= 6000 && ntohs(packet->tcp->dest) <= 6005)
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&& packet->payload_packet_len == 48
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&& packet->payload[0] == 0x6c && packet->payload[1] == 0x00
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&& ntohs(get_u_int16_t(packet->payload, 6)) == 0x1200 && ntohs(get_u_int16_t(packet->payload, 8)) == 0x1000) {
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NDPI_LOG(NDPI_PROTOCOL_XDMCP, ndpi_struct, NDPI_LOG_DEBUG, "found xdmcp over tcp.\n");
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ndpi_int_xdmcp_add_connection(ndpi_struct, flow);
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return;
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}
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if (packet->udp != NULL && ntohs(packet->udp->dest) == 177
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&& packet->payload_packet_len >= 6 && packet->payload_packet_len == 6 + ntohs(get_u_int16_t(packet->payload, 4))
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&& ntohs(get_u_int16_t(packet->payload, 0)) == 0x0001 && ntohs(get_u_int16_t(packet->payload, 2)) == 0x0002) {
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NDPI_LOG(NDPI_PROTOCOL_XDMCP, ndpi_struct, NDPI_LOG_DEBUG, "found xdmcp over udp.\n");
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ndpi_int_xdmcp_add_connection(ndpi_struct, flow);
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return;
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}
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NDPI_LOG(NDPI_PROTOCOL_XDMCP, ndpi_struct, NDPI_LOG_DEBUG, "exclude xdmcp.\n");
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NDPI_ADD_PROTOCOL_TO_BITMASK(flow->excluded_protocol_bitmask, NDPI_PROTOCOL_XDMCP);
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}
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#endif
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