mirror of
https://github.com/RetroShare/RetroShare.git
synced 2024-10-01 02:35:48 -04:00
59cdaba9dc
git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@1050 b45a01b8-16f6-495d-af2f-9b41ad6348cc
457 lines
9.0 KiB
C++
457 lines
9.0 KiB
C++
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/*
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* libretroshare/src/serialiser: rsserial.cc
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*
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* RetroShare Serialiser.
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*
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* Copyright 2007-2008 by Robert Fernie.
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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 Library General Public
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* License Version 2 as published by the Free Software Foundation.
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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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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA.
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*
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* Please report all bugs and problems to "retroshare@lunamutt.com".
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*
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*/
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#include "serialiser/rsbaseserial.h"
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#include "serialiser/rsserial.h"
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#include <map>
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#include <iostream>
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/***
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#define RSSERIAL_DEBUG 1
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***/
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#ifdef RSSERIAL_DEBUG
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#include <sstream>
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#endif
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RsItem::RsItem(uint32_t t)
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:type(t)
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{
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return;
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}
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RsItem::RsItem(uint8_t ver, uint8_t cls, uint8_t t, uint8_t subtype)
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{
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type = (ver << 24) + (cls << 16) + (t << 8) + subtype;
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return;
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}
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RsItem::~RsItem()
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{
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return;
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}
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uint32_t RsItem::PacketId()
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{
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return type;
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}
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uint8_t RsItem::PacketVersion()
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{
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return (type >> 24);
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}
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uint8_t RsItem::PacketClass()
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{
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return (type >> 16) & 0xFF;
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}
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uint8_t RsItem::PacketType()
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{
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return (type >> 8) & 0xFF;
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}
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uint8_t RsItem::PacketSubType()
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{
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return (type & 0xFF);
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}
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/* For Service Packets */
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RsItem::RsItem(uint8_t ver, uint16_t service, uint8_t subtype)
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{
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type = (ver << 24) + (service << 8) + subtype;
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return;
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}
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uint16_t RsItem::PacketService()
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{
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return (type >> 8) & 0xFFFF;
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}
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RsSerialType::RsSerialType(uint32_t t)
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:type(t & 0xFFFFFF00)
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{
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return;
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}
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RsSerialType::RsSerialType(uint8_t ver, uint8_t cls, uint8_t t)
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{
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type = (ver << 24) + (cls << 16) + (t << 8);
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return;
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}
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RsSerialType::RsSerialType(uint8_t ver, uint16_t service)
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{
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type = (ver << 24) + (service << 8);
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return;
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}
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RsSerialType::~RsSerialType()
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{
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return;
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}
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uint32_t RsSerialType::size(RsItem *)
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{
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#ifdef RSSERIAL_DEBUG
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std::cerr << "RsSerialType::size()" << std::endl;
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#endif
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/* base size: type + length */
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return 8;
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}
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bool RsSerialType::serialise(RsItem *item, void *data, uint32_t *size)
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{
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#ifdef RSSERIAL_DEBUG
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std::cerr << "RsSerialType::serialise()" << std::endl;
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#endif
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return false;
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}
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RsItem * RsSerialType::deserialise(void *data, uint32_t *size)
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{
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#ifdef RSSERIAL_DEBUG
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std::cerr << "RsSerialType::deserialise()" << std::endl;
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#endif
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return NULL;
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}
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uint32_t RsSerialType::PacketId()
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{
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return type;
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}
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RsSerialiser::RsSerialiser()
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{
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return;
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}
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RsSerialiser::~RsSerialiser()
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{
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/* clean up the map */
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std::map<uint32_t, RsSerialType *>::iterator it;
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for(it = serialisers.begin(); it != serialisers.end(); it++)
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{
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delete (it->second);
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}
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serialisers.clear();
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return;
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}
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bool RsSerialiser::addSerialType(RsSerialType *serialiser)
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{
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uint32_t type = (serialiser->PacketId() & 0xFFFFFF00);
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std::map<uint32_t, RsSerialType *>::iterator it;
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if (serialisers.end() != (it = serialisers.find(type)))
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{
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#ifdef RSSERIAL_DEBUG
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std::cerr << "RsSerialiser::addSerialType() Error Serialiser already exists!";
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std::cerr << std::endl;
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#endif
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return false;
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}
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serialisers[type] = serialiser;
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return true;
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}
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uint32_t RsSerialiser::size(RsItem *item)
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{
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/* find the type */
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uint32_t type = (item->PacketId() & 0xFFFFFF00);
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std::map<uint32_t, RsSerialType *>::iterator it;
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if (serialisers.end() == (it = serialisers.find(type)))
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{
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/* remove 8 more bits -> try again */
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type &= 0xFFFF0000;
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if (serialisers.end() == (it = serialisers.find(type)))
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{
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/* one more try */
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type &= 0xFF000000;
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if (serialisers.end() == (it = serialisers.find(type)))
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{
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#ifdef RSSERIAL_DEBUG
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std::cerr << "RsSerialiser::size() serialiser missing!";
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std::ostringstream out;
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out << std::hex << item->PacketId();
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std::cerr << "RsSerialiser::size() PacketId: ";
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std::cerr << out.str();
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std::cerr << std::endl;
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#endif
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return 0;
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}
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}
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}
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#ifdef RSSERIAL_DEBUG
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std::ostringstream out;
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out << std::hex << "RsSerialiser::size() Item->PacketId(): " << item->PacketId();
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out << " matched to Serialiser Type: " << type;
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std::cerr << out.str() << std::endl;
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#endif
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return (it->second)->size(item);
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}
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bool RsSerialiser::serialise (RsItem *item, void *data, uint32_t *size)
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{
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/* find the type */
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uint32_t type = (item->PacketId() & 0xFFFFFF00);
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std::map<uint32_t, RsSerialType *>::iterator it;
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if (serialisers.end() == (it = serialisers.find(type)))
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{
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/* remove 8 more bits -> try again */
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type &= 0xFFFF0000;
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if (serialisers.end() == (it = serialisers.find(type)))
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{
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/* one more try */
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type &= 0xFF000000;
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if (serialisers.end() == (it = serialisers.find(type)))
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{
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#ifdef RSSERIAL_DEBUG
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std::cerr << "RsSerialiser::serialise() serialiser missing!";
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std::ostringstream out;
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out << std::hex << item->PacketId();
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std::cerr << "RsSerialiser::serialise() PacketId: ";
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std::cerr << out.str();
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std::cerr << std::endl;
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#endif
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return false;
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}
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}
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}
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#ifdef RSSERIAL_DEBUG
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std::ostringstream out;
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out << std::hex << "RsSerialiser::serialise() Item->PacketId(): " << item->PacketId();
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out << " matched to Serialiser Type: " << type;
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std::cerr << out.str() << std::endl;
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#endif
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return (it->second)->serialise(item, data, size);
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}
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RsItem * RsSerialiser::deserialise(void *data, uint32_t *size)
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{
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/* find the type */
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if (*size < 8)
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{
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#ifdef RSSERIAL_DEBUG
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std::cerr << "RsSerialiser::deserialise() Not Enough Data(1)";
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std::cerr << std::endl;
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#endif
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return NULL;
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}
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uint32_t type = (getRsItemId(data) & 0xFFFFFF00);
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uint32_t pkt_size = getRsItemSize(data);
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if (pkt_size < *size)
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{
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#ifdef RSSERIAL_DEBUG
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std::cerr << "RsSerialiser::deserialise() Not Enough Data(2)";
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std::cerr << std::endl;
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#endif
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return NULL;
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}
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/* store the packet size to return the amount we should use up */
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*size = pkt_size;
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std::map<uint32_t, RsSerialType *>::iterator it;
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if (serialisers.end() == (it = serialisers.find(type)))
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{
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/* remove 8 more bits -> try again */
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type &= 0xFFFF0000;
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if (serialisers.end() == (it = serialisers.find(type)))
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{
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/* one more try */
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type &= 0xFF000000;
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if (serialisers.end() == (it = serialisers.find(type)))
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{
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#ifdef RSSERIAL_DEBUG
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std::cerr << "RsSerialiser::deserialise() deserialiser missing!";
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std::ostringstream out;
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out << std::hex << getRsItemId(data);
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std::cerr << "RsSerialiser::deserialise() PacketId: ";
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std::cerr << out.str();
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std::cerr << std::endl;
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#endif
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return NULL;
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}
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}
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}
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RsItem *item = (it->second)->deserialise(data, &pkt_size);
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if (!item)
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{
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#ifdef RSSERIAL_DEBUG
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std::cerr << "RsSerialiser::deserialise() Failed!";
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std::cerr << std::endl;
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#endif
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return NULL;
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}
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if (pkt_size != *size)
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{
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#ifdef RSSERIAL_DEBUG
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std::cerr << "RsSerialiser::deserialise() Warning: size mismatch!";
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std::cerr << std::endl;
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#endif
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}
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return item;
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}
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bool setRsItemHeader(void *data, uint32_t size, uint32_t type, uint32_t pktsize)
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{
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if (size < 8)
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return false;
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uint32_t offset = 0;
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bool ok = true;
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ok &= setRawUInt32(data, 8, &offset, type);
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ok &= setRawUInt32(data, 8, &offset, pktsize);
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return ok;
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}
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uint32_t getRsItemId(void *data)
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{
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uint32_t type = 0;
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uint32_t offset = 0;
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getRawUInt32(data, 4, &offset, &type);
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return type;
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}
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uint32_t getRsItemSize(void *data)
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{
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uint32_t size = 0;
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uint32_t offset = 4;
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getRawUInt32(data, 8, &offset, &size);
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return size;
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}
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uint8_t getRsItemVersion(uint32_t type)
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{
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return (type >> 24);
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}
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uint8_t getRsItemClass(uint32_t type)
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{
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return (type >> 16) & 0xFF;
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}
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uint8_t getRsItemType(uint32_t type)
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{
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return (type >> 8) & 0xFF;
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}
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uint8_t getRsItemSubType(uint32_t type)
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{
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return (type & 0xFF);
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}
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uint16_t getRsItemService(uint32_t type)
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{
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return (type >> 8) & 0xFFFF;
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}
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std::ostream &printRsItemBase(std::ostream &out, std::string clsName, uint16_t indent)
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{
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printIndent(out, indent);
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out << "RsItem: " << clsName << " ####################################";
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out << std::endl;
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return out;
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}
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std::ostream &printRsItemEnd(std::ostream &out, std::string clsName, uint16_t indent)
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{
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printIndent(out, indent);
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out << "###################### " << clsName << " #####################";
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out << std::endl;
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return out;
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}
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std::ostream &RsRawItem::print(std::ostream &out, uint16_t indent)
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{
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printRsItemBase(out, "RsRawItem", indent);
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printIndent(out, indent);
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out << "Size: " << len << std::endl;
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printRsItemEnd(out, "RsRawItem", indent);
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return out;
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}
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uint32_t getRsPktMaxSize()
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{
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//return 65535; /* 2^16 (old artifical low size) */
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//return 1048575; /* 2^20 -1 (Too Big! - must remove fixed static buffers first) */
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/* Remember that every pqistreamer allocates an input buffer of this size!
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* So don't make it too big!
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*/
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return 262143; /* 2^18 -1 */
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}
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uint32_t getRsPktBaseSize()
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{
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return 8; /* 4 + 4 */
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}
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