libtins 4.5
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ipsec.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_IPSEC_H
31#define TINS_IPSEC_H
32
33#include <tins/pdu.h>
34#include <tins/macros.h>
35#include <tins/endianness.h>
36#include <tins/small_uint.h>
37
38namespace Tins {
39
44class TINS_API IPSecAH : public PDU {
45public:
49 static const PDU::PDUType pdu_flag = PDU::IPSEC_AH;
50
57 IPSecAH();
58
70 IPSecAH(const uint8_t* buffer, uint32_t total_sz);
71
72 // Getters
73
78 uint8_t next_header() const {
79 return header_.next_header;
80 }
81
86 uint8_t length() const {
87 return header_.length;
88 }
89
94 uint32_t spi() const {
95 return Endian::be_to_host(header_.spi);
96 }
97
102 uint32_t seq_number() const {
103 return Endian::be_to_host(header_.seq_number);
104 }
105
110 const byte_array& icv() const {
111 return icv_;
112 }
113
114 // Setters
115
120 void next_header(uint8_t new_next_header);
121
126 void length(uint8_t new_length);
127
132 void spi(uint32_t new_spi);
133
138 void seq_number(uint32_t new_seq_number);
139
144 void icv(const byte_array& newicv_);
145
151 uint32_t header_size() const;
152
157 PDUType pdu_type() const { return pdu_flag; }
158
162 IPSecAH* clone() const {
163 return new IPSecAH(*this);
164 }
165private:
166 struct ipsec_header {
167 uint8_t next_header, length;
168 uint32_t spi, seq_number;
169 };
170
171 void write_serialization(uint8_t* buffer, uint32_t total_sz);
172
173 ipsec_header header_;
174 byte_array icv_;
175};
176
180class TINS_API IPSecESP : public PDU {
181public:
185 static const PDU::PDUType pdu_flag = PDU::IPSEC_ESP;
186
190 IPSecESP();
191
203 IPSecESP(const uint8_t* buffer, uint32_t total_sz);
204
205 // Getters
206
211 uint32_t spi() const {
212 return Endian::be_to_host(header_.spi);
213 }
214
219 uint32_t seq_number() const {
220 return Endian::be_to_host(header_.seq_number);
221 }
222
223 // Setters
224
229 void spi(uint32_t new_spi);
230
235 void seq_number(uint32_t new_seq_number);
236
242 uint32_t header_size() const;
243
248 PDUType pdu_type() const { return pdu_flag; }
249
253 IPSecESP* clone() const {
254 return new IPSecESP(*this);
255 }
256private:
257 struct ipsec_header {
258 uint32_t spi, seq_number;
259 };
260
261 void write_serialization(uint8_t* buffer, uint32_t total_sz);
262
263 ipsec_header header_;
264};
265}
266
267#endif // TINS_IPSEC_H
Represents an IPSec Authentication Header.
Definition ipsec.h:44
PDUType pdu_type() const
Getter for the PDU's type.
Definition ipsec.h:157
uint8_t length() const
Getter for the Length field.
Definition ipsec.h:86
uint32_t spi() const
Getter for the Security Parameters Index field.
Definition ipsec.h:94
uint8_t next_header() const
Getter for the Next header field.
Definition ipsec.h:78
IPSecAH * clone() const
Definition ipsec.h:162
uint32_t seq_number() const
Getter for the Sequence number field.
Definition ipsec.h:102
const byte_array & icv() const
Getter for the ICV field.
Definition ipsec.h:110
Represents an IPSec Authentication Header.
Definition ipsec.h:180
PDUType pdu_type() const
Getter for the PDU's type.
Definition ipsec.h:248
IPSecESP * clone() const
Definition ipsec.h:253
uint32_t spi() const
Getter for the Security Parameters Index field.
Definition ipsec.h:211
uint32_t seq_number() const
Getter for the Sequence number field.
Definition ipsec.h:219
Base class for protocol data units.
Definition pdu.h:107
PDUType
Enum which identifies each type of PDU.
Definition pdu.h:127
The Tins namespace.
Definition address_range.h:38
std::vector< uint8_t > byte_array
Definition pdu.h:50