libtins 4.5
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offline_packet_filter.h
1/*
2 * Copyright (c) 2017, Matias Fontanini
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met:
8 *
9 * * Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * * Redistributions in binary form must reproduce the above
12 * copyright notice, this list of conditions and the following disclaimer
13 * in the documentation and/or other materials provided with the
14 * distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 */
29
30#ifndef TINS_OFFLINE_PACKET_FILTER_H
31#define TINS_OFFLINE_PACKET_FILTER_H
32
33#include <string>
34#include <stdint.h>
35#include <tins/macros.h>
36
37#ifdef TINS_HAVE_PCAP
38
39#include <tins/data_link_type.h>
40
41namespace Tins {
42
43class PDU;
44
82class TINS_API OfflinePacketFilter {
83public:
91 template<typename T>
92 OfflinePacketFilter(const std::string& filter,
93 const DataLinkType<T>& lt,
94 unsigned int snap_len = 65535)
95 : string_filter_(filter) {
96 init(filter, lt.get_type(), snap_len);
97 }
98
108 OfflinePacketFilter(const OfflinePacketFilter& other);
109
117 OfflinePacketFilter& operator=(const OfflinePacketFilter& other);
118
122 ~OfflinePacketFilter();
123
135 bool matches_filter(const uint8_t* buffer, uint32_t total_sz) const;
136
150 bool matches_filter(PDU& pdu) const;
151private:
152 void init(const std::string& pcap_filter, int link_type,
153 unsigned int snap_len);
154
155
156 pcap_t* handle_;
157 mutable bpf_program filter_;
158 std::string string_filter_;
159};
160
161} // Tins
162
163#endif // TINS_HAVE_PCAP
164
165#endif // TINS_OFFLINE_PACKET_FILTER_H
The Tins namespace.
Definition address_range.h:38