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/*
* The ManaPlus Client
* Copyright (C) 2004-2009 The Mana World Development Team
* Copyright (C) 2009-2010 The Mana Developers
* Copyright (C) 2011-2014 The ManaPlus Developers
*
* This file is part of The ManaPlus Client.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* any later version.
*
* 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. If not, see <http://www.gnu.org/licenses/>.
*/
#include "net/eathena/messagein.h"
#include "net/packetcounters.h"
#include "logger.h"
#include "utils/stringutils.h"
#include <SDL_endian.h>
#include "debug.h"
namespace EAthena
{
MessageIn::MessageIn(const char *const data, const unsigned int length) :
Net::MessageIn(data, length)
{
}
void MessageIn::postInit()
{
// Read the message ID
mId = readInt16("packet id");
}
int16_t MessageIn::readInt16(const char *const str)
{
int16_t value = -1;
if (mPos + 2 <= mLength)
{
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
int16_t swap;
memcpy(&swap, mData + static_cast<size_t>(mPos), sizeof(int16_t));
value = SDL_Swap16(swap);
#else
memcpy(&value, mData + static_cast<size_t>(mPos), sizeof(int16_t));
#endif
}
DEBUGLOG2("readInt16: " + toStringPrint(static_cast<int>(value)),
mPos, str);
mPos += 2;
PacketCounters::incInBytes(2);
return value;
}
int32_t MessageIn::readInt32(const char *const str)
{
int32_t value = -1;
if (mPos + 4 <= mLength)
{
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
int32_t swap;
memcpy(&swap, mData + static_cast<size_t>(mPos), sizeof(int32_t));
value = SDL_Swap32(swap);
#else
memcpy(&value, mData + static_cast<size_t>(mPos), sizeof(int32_t));
#endif
}
DEBUGLOG2("readInt32: " + toStringPrint(value), mPos, str);
mPos += 4;
PacketCounters::incInBytes(4);
return value;
}
int64_t MessageIn::readInt64(const char *const str)
{
int64_t value = -1;
if (mPos + 8 <= mLength)
{
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
int64_t swap;
memcpy(&swap, mData + static_cast<size_t>(mPos), sizeof(int64_t));
value = SDL_Swap64(swap);
#else
memcpy(&value, mData + static_cast<size_t>(mPos), sizeof(int64_t));
#endif
}
DEBUGLOG2("readInt64: " + toStringPrint(value), mPos, str);
mPos += 8;
PacketCounters::incInBytes(8);
return value;
}
} // namespace EAthena
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