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/*
* anytun
*
* The secure anycast tunneling protocol (satp) defines a protocol used
* for communication between any combination of unicast and anycast
* tunnel endpoints. It has less protocol overhead than IPSec in Tunnel
* mode and allows tunneling of every ETHER TYPE protocol (e.g.
* ethernet, ip, arp ...). satp directly includes cryptography and
* message authentication based on the methodes used by SRTP. It is
* intended to deliver a generic, scaleable and secure solution for
* tunneling and relaying of packets of any protocol.
*
*
* Copyright (C) 2007-2008 Othmar Gsenger, Erwin Nindl,
* Christian Pointner <satp@wirdorange.org>
*
* This file is part of Anytun.
*
* Anytun is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* Anytun is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with anytun. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _BUFFER_H_
#define _BUFFER_H_
#include "datatypes.h"
#include <string>
class TunDevice;
class UDPPacketSource;
class Buffer
{
public:
Buffer(bool allow_realloc = true);
Buffer(u_int32_t length, bool allow_realloc = true);
Buffer(u_int8_t* data, u_int32_t length, bool allow_realloc = true);
Buffer(std::string hex_data, bool allow_realloc = true);
virtual ~Buffer();
Buffer(const Buffer &src);
void operator=(const Buffer &src);
bool operator==(const Buffer &cmp) const;
Buffer operator^(const Buffer &xor_by) const;
u_int32_t getLength() const;
virtual void setLength(u_int32_t new_length);
u_int8_t* getBuf();
u_int8_t& operator[](u_int32_t index);
u_int8_t operator[](u_int32_t index) const;
std::string getHexDump() const;
std::string getHexDumpOneLine() const;
bool isReallocAllowed() const;
operator u_int8_t*();
protected:
virtual void reinit() {};
u_int8_t *buf_;
u_int32_t length_;
u_int32_t real_length_;
bool allow_realloc_;
static const u_int32_t OVER_SIZE_ = 100;
};
#endif
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