96 lines
3.1 KiB
C++
96 lines
3.1 KiB
C++
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/*
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*
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* Copyright (c) 2011-2016 The University of Waikato, Hamilton, New Zealand.
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* All rights reserved.
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*
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* This file is part of libprotoident.
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*
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* This code has been developed by the University of Waikato WAND
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* research group. For further information please see http://www.wand.net.nz/
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*
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* libprotoident 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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* libprotoident 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 this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*
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*/
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#include <string.h>
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#include "libprotoident.h"
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#include "proto_manager.h"
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#include "proto_common.h"
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static inline bool match_invalid(lpi_data_t *data, lpi_module_t *mod UNUSED) {
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/* I'm using invalid as a category for flows where both halves of
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* the connection are clearly speaking different protocols,
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* e.g. trying to do HTTP tunnelling via an SMTP server
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*/
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/* XXX Bittorrent-related stuff is covered in
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* match_invalid_bittorrent() */
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/* SOCKSv4 via FTP or SMTP
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*
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* The last two octets '\x00\x50' is the port number - in this case
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* I've hard-coded it to be 80 */
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if (match_str_both(data, "220 ", "\x04\x01\x00\x50"))
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return true;
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/* SOCKSv5 via FTP or SMTP */
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if (match_str_both(data, "220 ", "\x05\x01\x00\x00"))
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return true;
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/* HTTP tunnelling via FTP or SMTP */
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if (match_str_both(data, "220 ", "CONN"))
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return true;
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if (match_str_both(data, "450 ", "CONN"))
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return true;
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/* Trying to send HTTP commands to FTP or SMTP servers */
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if (match_str_both(data, "220 ", "GET "))
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return true;
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if (match_str_both(data, "450 ", "GET "))
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return true;
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/* Trying to send HTTP commands to an SVN server */
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if (match_str_both(data, "( su", "GET "))
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return true;
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/* People running an HTTP server on the MS SQL server port */
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if (match_tds_request(data->payload[0], data->payload_len[0])) {
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if (MATCHSTR(data->payload[1], "HTTP"))
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return true;
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}
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if (match_tds_request(data->payload[1], data->payload_len[1])) {
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if (MATCHSTR(data->payload[0], "HTTP"))
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return true;
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}
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return false;
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}
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static lpi_module_t lpi_invalid = {
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LPI_PROTO_INVALID,
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LPI_CATEGORY_MIXED,
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"Invalid",
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200, /* Very low priority, but not as low as mystery protos */
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match_invalid
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};
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void register_invalid(LPIModuleMap *mod_map) {
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register_protocol(&lpi_invalid, mod_map);
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}
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