git://developer.intra2net.com / pingcheck / blame
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|---|---|---|
| 0c0bb697 TJ |
1 | // Copyright (c) 2003-2010 Christopher M. Kohlhoff |
| 2 | // Modifications (c) 2011 by Guilherme Maciel Ferreira / Intra2net AG | |
| 3 | // | |
| 4 | // Distributed under the Boost Software License, Version 1.0. | |
| 5 | // (See accompanying file LICENSE_1_0.txt or copy at | |
| 6 | // http://www.boost.org/LICENSE_1_0.txt) | |
| 0e2c8122 GMF |
7 | #ifndef IPV4_HEADER_H |
| 8 | #define IPV4_HEADER_H | |
| 4ea9706c | 9 | |
| fd6ef587 | 10 | #include <stdint.h> |
| 4ea9706c | 11 | |
| 9c55ecd3 GMF |
12 | #include <boost/asio/ip/address_v4.hpp> |
| 13 | ||
| 5d9d2808 | 14 | #include "ip/ipheader.h" |
| 01e5134e | 15 | |
| 4c2a5ab5 GMF |
16 | //----------------------------------------------------------------------------- |
| 17 | // Ipv4Header | |
| 18 | //----------------------------------------------------------------------------- | |
| 4ea9706c | 19 | |
| dfd89091 GMF |
20 | /** |
| 21 | * @brief This class represents the IP version 4 Packet Header. | |
| 22 | * | |
| 23 | * The IPv4 header format is: | |
| 24 | * | |
| 25 | * @code | |
| 19adb95f | 26 | * 0 3 4 7 8 15 16 31 |
| dfd89091 GMF |
27 | * +-------+-------+---------------+------------------------------+ --- |
| 28 | * | | | | | ^ | |
| 0612cc8a GMF |
29 | * |version|header | differentiated| total length in bytes | | |
| 30 | * | (4) | length| services | | | | |
| dfd89091 GMF |
31 | * +-------+-------+---------------+-+-+-+------------------------+ | |
| 32 | * | | | | | | | | |
| 33 | * | identification |0|D|M| fragment offset | | | |
| 34 | * | | |F|F| | | | |
| 35 | * +---------------+---------------+-+-+-+------------------------+ | | |
| 36 | * | | | | | | |
| 37 | * | time to live | protocol | header checksum | 20 bytes | |
| 38 | * | | | | | | |
| 39 | * +---------------+---------------+------------------------------+ | | |
| 40 | * | | | | |
| 41 | * | source IPv4 address | | | |
| 42 | * | | | | |
| 43 | * +--------------------------------------------------------------+ | | |
| 44 | * | | | | |
| 45 | * | destination IPv4 address | | | |
| 46 | * | | v | |
| 47 | * +--------------------------------------------------------------+ --- | |
| 48 | * | | ^ | |
| 49 | * | | | | |
| 50 | * / options (if any) / 0 - 40 | |
| 51 | * / / bytes | |
| 52 | * | | | | |
| 53 | * | | v | |
| 54 | * +--------------------------------------------------------------+ --- | |
| 55 | * @endcode | |
| 56 | */ | |
| 5d9d2808 | 57 | class Ipv4Header : public IpHeader |
| 4ea9706c GMF |
58 | { |
| 59 | public: | |
| 60 | Ipv4Header(); | |
| 61 | ||
| fd6ef587 GMF |
62 | uint8_t get_version() const; |
| 63 | uint16_t get_header_length() const; | |
| 0612cc8a | 64 | uint8_t get_differentiated_services() const; |
| fd6ef587 | 65 | uint16_t get_total_length() const; |
| 4ea9706c | 66 | |
| 64c7fec3 | 67 | uint16_t get_identification() const; |
| 4ea9706c | 68 | bool dont_fragment() const; |
| 64c7fec3 | 69 | bool more_fragments() const; |
| fd6ef587 | 70 | uint16_t get_fragment_offset() const; |
| 64c7fec3 | 71 | |
| 703f4d65 | 72 | uint8_t get_time_to_live() const; |
| fd6ef587 GMF |
73 | uint8_t get_protocol() const; |
| 74 | uint16_t get_header_checksum() const; | |
| 4ea9706c | 75 | |
| 5d9d2808 CH |
76 | boost::asio::ip::address get_source_address() const; |
| 77 | boost::asio::ip::address get_destination_address() const; | |
| 4ea9706c | 78 | |
| a4049623 | 79 | friend std::istream &operator>>( |
| cb60ed91 GMF |
80 | std::istream &is, |
| 81 | Ipv4Header &header | |
| 82 | ); | |
| 4ea9706c | 83 | |
| 4ea9706c GMF |
84 | }; |
| 85 | ||
| c85c0309 | 86 | #endif // IPV4_HEADER_H |