RetroShare/libretroshare/src/serialiser/rstunnelitems.h
csoler 5045e720b2 Corrected two harmful bugs in tunnel connexion code:
- added a destructor to RsTunnelDataItem, to remove a memory leak on all data packets.
- apparently the code would allow data items of zero size, hence calling malloc(0), which
  has undetermined behavior.



git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@3191 b45a01b8-16f6-495d-af2f-9b41ad6348cc
2010-06-22 21:05:56 +00:00

133 lines
4.0 KiB
C++

#ifndef RS_TUNNEL_ITEMS_H
#define RS_TUNNEL_ITEMS_H
/*
* libretroshare/src/serialiser: rschannelitems.h
*
* RetroShare Serialiser.
*
* Copyright 2007-2008 by Robert Fernie.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License Version 2 as published by the Free Software Foundation.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA.
*
* Please report all bugs and problems to "retroshare@lunamutt.com".
*
*/
#include <map>
#include "serialiser/rstlvbase.h"
#include "serialiser/rsbaseserial.h"
#include "serialiser/rsserviceids.h"
#include "serialiser/rsserial.h"
#include "serialiser/rstlvtypes.h"
#include "serialiser/rstlvkeys.h"
const uint8_t RS_TUNNEL_SUBTYPE_DATA = 0x01 ;
const uint8_t RS_TUNNEL_SUBTYPE_HANDSHAKE = 0x02 ;
/***********************************************************************************/
/* Basic Tunnel Item Class */
/***********************************************************************************/
class RsTunnelItem: public RsItem
{
public:
RsTunnelItem(uint8_t tunnel_subtype) : RsItem(RS_PKT_VERSION_SERVICE,RS_SERVICE_TYPE_TUNNEL,tunnel_subtype) {}
virtual ~RsTunnelItem() {}
virtual bool serialize(void *data,uint32_t& size) = 0 ; // Isn't it better that items can serialize themselves ?
virtual uint32_t serial_size() { return 0;}
virtual void clear() {}
};
class RsTunnelDataItem: public RsTunnelItem
{
public:
RsTunnelDataItem() : RsTunnelItem(RS_TUNNEL_SUBTYPE_DATA)
{
encoded_data = NULL ; // To comply with the destructor below.
}
virtual ~RsTunnelDataItem() ;
static RsTunnelDataItem *deserialise(void *data,uint32_t size) ; // deserialization
uint32_t encoded_data_len;
void *encoded_data;
std::string sourcePeerId ;
std::string relayPeerId ;
std::string destPeerId ;
std::ostream& print(std::ostream& o, uint16_t) ;
bool serialize(void *data,uint32_t& size) ;
uint32_t serial_size() ;
};
class RsTunnelHandshakeItem: public RsTunnelItem
{
public:
RsTunnelHandshakeItem() : RsTunnelItem(RS_TUNNEL_SUBTYPE_HANDSHAKE) {}
virtual ~RsTunnelHandshakeItem() {}
static RsTunnelHandshakeItem *deserialise(void *data,uint32_t size) ; // deserialization
std::string sourcePeerId ;
std::string relayPeerId ;
std::string destPeerId ;
std::string sslCertPEM ;
uint32_t connection_accepted;
std::ostream& print(std::ostream& o, uint16_t) ;
bool serialize(void *data,uint32_t& size) ;
uint32_t serial_size() ;
};
class RsTunnelSerialiser: public RsSerialType
{
public:
RsTunnelSerialiser() : RsSerialType(RS_PKT_VERSION_SERVICE, RS_SERVICE_TYPE_TUNNEL) {}
virtual uint32_t size(RsItem *item)
{
RsTunnelItem * rst;
if (NULL != (rst = dynamic_cast<RsTunnelItem *>(item)))
{
return rst->serial_size() ;
} else {
std::cerr << "RsTunnelSerialiser::size() problem, not a RsTunnelItem." << std::endl;
}
return 0;
}
virtual bool serialise(RsItem *item, void *data, uint32_t *size)
{
RsTunnelItem * rst;
if (NULL != (rst = dynamic_cast<RsTunnelItem *>(item)))
{
return rst->serialize(data,*size) ;
} else {
std::cerr << "RsTunnelSerialiser::serialise() problem, not a RsTunnelItem." << std::endl;
}
return false;
}
virtual RsItem *deserialise (void *data, uint32_t *size) ;
};
#endif /* RS_TUNNEL_ITEMS_H */