tibia-client/src/framework/net/outputmessage.cpp

107 lines
2.9 KiB
C++

/*
* Copyright (c) 2010-2012 OTClient <https://github.com/edubart/otclient>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <framework/net/outputmessage.h>
OutputMessage::OutputMessage()
{
reset();
}
void OutputMessage::reset()
{
m_writePos = DATA_POS;
m_messageSize = 0;
}
void OutputMessage::addU8(uint8 value)
{
checkWrite(1);
m_buffer[m_writePos] = value;
m_writePos += 1;
m_messageSize += 1;
}
void OutputMessage::addU16(uint16 value)
{
checkWrite(2);
Fw::writeLE16(m_buffer + m_writePos, value);
m_writePos += 2;
m_messageSize += 2;
}
void OutputMessage::addU32(uint32 value)
{
checkWrite(4);
Fw::writeLE32(m_buffer + m_writePos, value);
m_writePos += 4;
m_messageSize += 4;
}
void OutputMessage::addU64(uint64 value)
{
checkWrite(8);
Fw::writeLE64(m_buffer + m_writePos, value);
m_writePos += 8;
m_messageSize += 8;
}
void OutputMessage::addString(const char* value)
{
size_t stringLength = strlen(value);
if(stringLength > 65535)
throw NetworkException("[OutputMessage::addString] string length > 65535");
checkWrite(stringLength + 2);
addU16(stringLength);
strcpy((char*)(m_buffer + m_writePos), value);
m_writePos += stringLength;
m_messageSize += stringLength;
}
void OutputMessage::addString(const std::string &value)
{
addString(value.c_str());
}
void OutputMessage::addPaddingBytes(int bytes, uint8 byte)
{
if(bytes <= 0)
return;
checkWrite(bytes);
memset((void*)&m_buffer[m_writePos], byte, bytes);
m_writePos += bytes;
m_messageSize += bytes;
}
bool OutputMessage::canWrite(int bytes)
{
if(m_writePos + bytes > BUFFER_MAXSIZE)
return false;
return true;
}
void OutputMessage::checkWrite(int bytes)
{
if(!canWrite(bytes))
throw NetworkException("OutputMessage max buffer size reached");
}