mirror of
https://github.com/mfontanini/libtins
synced 2026-01-27 20:24:26 +01:00
96 lines
3.1 KiB
C++
96 lines
3.1 KiB
C++
/*
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* libtins is a net packet wrapper library for crafting and
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* interpreting sniffed packets.
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*
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* Copyright (C) 2011 Nasel
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* 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
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __IP_H
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#define __IP_H
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#ifndef WIN32
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#include <endian.h>
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#endif
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#include <string>
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#include "pdu.h"
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namespace Tins {
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class IP : public PDU {
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public:
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IP(const std::string &ip_dst = "", const std::string &ip_src = "", PDU *child = 0);
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IP(uint32_t ip_dst = 0, uint32_t ip_src = 0, PDU *child = 0);
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inline uint8_t tos() const { return _ip.tos; }
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inline uint16_t tot_len() const { return _ip.tot_len; }
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inline uint16_t id() const { return _ip.id; }
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inline uint16_t frag_off() const { return _ip.frag_off; }
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inline uint8_t ttl() const { return _ip.ttl; }
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inline uint8_t protocol() const { return _ip.protocol; }
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inline uint16_t check() const { return _ip.check; }
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inline uint32_t source_address() const { return _ip.saddr; }
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inline uint32_t dest_address() const { return _ip.daddr; }
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void tos(uint8_t new_tos);
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void tot_len(uint16_t new_tot_len);
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void id(uint16_t new_id);
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void frag_off(uint16_t new_frag_off);
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void ttl(uint8_t new_ttl);
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void protocol(uint8_t new_protocol);
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void check(uint16_t new_check);
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void source_address(const std::string &ip);
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void source_address(uint32_t ip);
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void dest_address(const std::string &ip);
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void dest_address(uint32_t ip);
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/* Virtual methods */
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uint32_t header_size() const;
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bool send(PacketSender* sender);
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private:
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struct iphdr {
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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unsigned int ihl:4;
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unsigned int version:4;
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#elif __BYTE_ORDER == __BIG_ENDIAN
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unsigned int version:4;
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unsigned int ihl:4;
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#else
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# error "Endian is not LE nor BE..."
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#endif
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uint8_t tos;
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uint16_t tot_len;
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uint16_t id;
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uint16_t frag_off;
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uint8_t ttl;
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uint8_t protocol;
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uint16_t check;
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uint32_t saddr;
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uint32_t daddr;
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/*The options start here. */
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} __attribute__((packed));
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static const uint8_t DEFAULT_TTL;
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void init_ip_fields();
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void write_serialization(uint8_t *buffer, uint32_t total_sz);
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iphdr _ip;
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};
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};
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#endif
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