✨ feat(integration decoders): http and glimpse_detector
compile pass, todo test
This commit is contained in:
yangwei
252
decoders/glimpse_detector/libprotoident/tcp/lpi_smtp.cc
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252
decoders/glimpse_detector/libprotoident/tcp/lpi_smtp.cc
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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_smtp_command(uint32_t payload, uint32_t len) {
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if (MATCHSTR(payload, "EHLO"))
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return true;
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if (MATCHSTR(payload, "ehlo"))
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return true;
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if (MATCHSTR(payload, "HELO"))
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return true;
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if (MATCHSTR(payload, "helo"))
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return true;
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if (MATCHSTR(payload, "NOOP"))
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return true;
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if (MATCHSTR(payload, "XXXX"))
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return true;
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if (MATCHSTR(payload, "HELP"))
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return true;
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if (MATCHSTR(payload, "EXPN"))
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return true;
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/* Turns out there are idiots who send their ehlos one byte at a
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* time :/ */
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if (MATCH(payload, 'e', 0x00, 0x00, 0x00) && len == 1)
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return true;
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if (MATCH(payload, 'E', 0x00, 0x00, 0x00) && len == 1)
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return true;
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if (MATCH(payload, 'h', 0x00, 0x00, 0x00) && len == 1)
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return true;
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if (MATCH(payload, 'H', 0x00, 0x00, 0x00) && len == 1)
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return true;
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return false;
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}
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static inline bool match_smtp_banner(uint32_t payload, uint32_t len) {
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/* Stupid servers that only send the banner one or two bytes at
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* a time! */
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if (len == 1) {
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if (MATCH(payload, '2', 0x00, 0x00, 0x00))
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return true;
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return false;
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}
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if (len == 2) {
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if (MATCH(payload, '2', '2', 0x00, 0x00))
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return true;
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return false;
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}
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if (len == 3) {
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if (MATCH(payload, '2', '2', '0', 0x00))
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return true;
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return false;
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}
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if (MATCH(payload, '2', '2', '0', ' '))
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return true;
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if (MATCH(payload, '2', '2', '0', '-'))
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return true;
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return false;
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}
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static inline bool invalid_smtp(lpi_data_t *data) {
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if (data->payload_len[0] == 0 || data->payload_len[1] == 0)
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{
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if (match_str_either(data, "220 ") &&
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(data->server_port == 21 ||
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data->client_port == 21))
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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 inline bool match_smtp(lpi_data_t *data, lpi_module_t *mod UNUSED)
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{
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if(invalid_smtp(data))
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{
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return false;
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}
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/* Match all the random error codes */
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if (data->payload_len[0] == 0 || data->payload_len[1] == 0) {
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if (match_str_either(data, "220 "))
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return true;
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if (match_str_either(data, "450 "))
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return true;
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if (match_str_either(data, "550 "))
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return true;
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if (match_str_either(data, "550-"))
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return true;
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if (match_str_either(data, "421 "))
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return true;
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if (match_str_either(data, "421-"))
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return true;
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if (match_str_either(data, "451 "))
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return true;
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if (match_str_either(data, "451-"))
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return true;
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if (match_str_either(data, "452 "))
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return true;
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if (match_str_either(data, "420 "))
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return true;
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if (match_str_either(data, "571 "))
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return true;
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if (match_str_either(data, "553 "))
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return true;
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if (match_str_either(data, "554 "))
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return true;
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if (match_str_either(data, "554-"))
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return true;
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if (match_str_either(data, "476 "))
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return true;
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if (match_str_either(data, "475 "))
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return true;
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}
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if (match_str_either(data, "QUIT") &&
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(data->server_port == 25 ||
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data->server_port == 587 ||
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data->client_port == 25 ||
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data->client_port == 587)
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)
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return true;
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if (match_str_either(data, "quit") &&
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(data->server_port == 25 ||
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data->server_port == 587 ||
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data->client_port == 25 ||
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data->client_port == 587)
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)
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return true;
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if (match_str_either(data, "Quit") &&
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(data->server_port == 25 ||
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data->server_port == 587 ||
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data->client_port == 25 ||
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data->client_port == 587)
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)
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return true;
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if (match_str_either(data, "EHLO") &&
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(data->server_port == 25 ||
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data->server_port == 587 ||
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data->client_port == 25 ||
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data->client_port == 587)
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)
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return true;
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if (match_str_either(data, "ehlo") &&
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(data->server_port == 25 ||
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data->server_port == 587 ||
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data->client_port == 25 ||
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data->client_port == 587)
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)
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return true;
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if (match_str_either(data, "HELO") &&
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(data->server_port == 25 ||
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data->server_port == 587 ||
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data->client_port == 25 ||
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data->client_port == 587)
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)
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return true;
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if (match_str_either(data, "helo") &&
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(data->server_port == 25 ||
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data->server_port == 587 ||
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data->client_port == 25 ||
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data->client_port == 587)
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)
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return true;
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if (match_str_either(data, "MAIL") &&
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(data->server_port == 25 ||
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data->server_port == 587 ||
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data->client_port == 25 ||
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data->client_port == 587)
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)
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return true;
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if (match_str_either(data, "mail") && (data->server_port == 25 ||
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data->server_port == 587 ||
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data->client_port == 25 ||
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data->client_port == 587))
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return true;
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if (match_str_either(data, "RCPT") &&
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(data->server_port == 25 ||
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data->server_port == 587 ||
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data->client_port == 25 ||
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data->client_port == 587)
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)
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return true;
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if (match_str_either(data, "rcpt") &&
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(data->server_port == 25 ||
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data->server_port == 587 ||
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data->client_port == 25 ||
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data->client_port == 587)
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)
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return true;
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/* Match the server banner code */
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if (match_smtp_banner(data->payload[0], data->payload_len[0])) {
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if (match_smtp_command(data->payload[1], data->payload_len[1]))
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return true;
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}
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if (match_smtp_banner(data->payload[1], data->payload_len[1])) {
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if (match_smtp_command(data->payload[0], data->payload_len[0]))
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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_smtp = {
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LPI_PROTO_SMTP,
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LPI_CATEGORY_MAIL,
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"SMTP",
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2,
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match_smtp
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};
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void register_smtp(LPIModuleMap *mod_map) {
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register_protocol(&lpi_smtp, mod_map);
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}
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