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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 anytun.org <satp@wirdorange.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* This program 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 this program (see the file COPYING included with this
* distribution); if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdexcept>
#include <iostream>
#include <arpa/inet.h>
#include "datatypes.h"
#include "plainPacket.h"
PlainPacket::~PlainPacket()
{
buf_=complete_payload_;
length_=max_length_;
}
PlainPacket::PlainPacket(u_int32_t max_payload_length) : Buffer(max_payload_length + sizeof(payload_type_t))
{
payload_type_ = NULL;
splitPayload();
}
void PlainPacket::splitPayload()
{
complete_payload_length_ = length_;
complete_payload_ = buf_;
payload_type_ = reinterpret_cast<payload_type_t*>(buf_);
buf_ += sizeof(payload_type_t);
length_ -= sizeof(payload_type_t);
max_length_ = length_;
}
void PlainPacket::setCompletePayloadLength(u_int32_t payload_length)
{
complete_payload_length_ = payload_length;
length_=complete_payload_length_-sizeof(payload_type_t);
}
u_int32_t PlainPacket::getCompletePayloadLength()
{
return complete_payload_length_;
}
payload_type_t PlainPacket::getPayloadType() const
{
return PAYLOAD_TYPE_T_NTOH(*payload_type_);
}
void PlainPacket::setPayloadType(payload_type_t payload_type)
{
if(payload_type_)
*payload_type_ = PAYLOAD_TYPE_T_HTON(payload_type);
}
void PlainPacket::setLength(u_int32_t length)
{
if(length > max_length_)
throw std::out_of_range("can't set length greater then size ofsize of allocated memory");
length_ = length;
complete_payload_length_ = length_ + sizeof(payload_type_t);
}
u_int32_t PlainPacket::getMaxLength() const
{
return max_length_;
}
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