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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) 2011-2015 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/tmwa/network.h"
#include "logger.h"
#include "net/tmwa/messagehandler.h"
#include "net/tmwa/messagein.h"
#include "net/tmwa/packets.h"
#include "net/tmwa/protocol.h"
#include "utils/delete2.h"
#include "debug.h"
namespace TmwAthena
{
static const unsigned int packet_lengths_size
= static_cast<unsigned int>(sizeof(packet_lengths) / sizeof(int16_t));
static const unsigned int messagesSize = 0xFFFFU;
Network *Network::mInstance = nullptr;
Network::Network() :
Ea::Network(),
mMessageHandlers(new MessageHandler*[messagesSize])
{
mInstance = this;
memset(&mMessageHandlers[0], 0, sizeof(MessageHandler*) * 0xffff);
}
Network::~Network()
{
clearHandlers();
delete2Arr(mMessageHandlers);
mInstance = nullptr;
}
void Network::registerHandler(MessageHandler *const handler)
{
if (!handler)
return;
for (const uint16_t *i = handler->handledMessages; *i; ++i)
mMessageHandlers[*i] = handler;
handler->setNetwork(this);
}
void Network::unregisterHandler(MessageHandler *const handler)
{
if (!handler)
return;
for (const uint16_t *i = handler->handledMessages; *i; ++i)
mMessageHandlers[*i] = nullptr;
handler->setNetwork(nullptr);
}
void Network::clearHandlers()
{
for (size_t f = 0; f < messagesSize; f ++)
{
if (mMessageHandlers[f])
{
mMessageHandlers[f]->setNetwork(nullptr);
mMessageHandlers[f] = nullptr;
}
}
}
void Network::dispatchMessages()
{
BLOCK_START("Network::dispatchMessages 1")
mPauseDispatch = false;
while (messageReady())
{
SDL_mutexP(mMutexIn);
BLOCK_START("Network::dispatchMessages 2")
const unsigned int msgId = readWord(0);
int len = -1;
if (msgId == SMSG_SERVER_VERSION_RESPONSE)
len = 10;
else if (msgId == SMSG_UPDATE_HOST2)
len = -1;
else if (msgId < packet_lengths_size)
len = packet_lengths[msgId];
if (len == -1)
len = readWord(2);
MessageIn msg(mInBuffer, len);
msg.postInit();
SDL_mutexV(mMutexIn);
BLOCK_END("Network::dispatchMessages 2")
BLOCK_START("Network::dispatchMessages 3")
if (len == 0)
{
// need copy data for safty
std::string str = strprintf(
"Wrong packet %u 0x%x received. Exiting.",
msgId, msgId);
logger->safeError(str);
}
if (msgId < messagesSize)
{
MessageHandler *const handler = mMessageHandlers[msgId];
if (handler)
handler->handleMessage(msg);
else
logger->log("Unhandled packet: %u 0x%x", msgId, msgId);
}
skip(len);
if (mPauseDispatch)
{
BLOCK_END("Network::dispatchMessages 3")
break;
}
BLOCK_END("Network::dispatchMessages 3")
}
BLOCK_END("Network::dispatchMessages 1")
}
bool Network::messageReady()
{
int len = -1;
SDL_mutexP(mMutexIn);
if (mInSize >= 2)
{
const int msgId = readWord(0);
if (msgId == SMSG_SERVER_VERSION_RESPONSE)
{
len = 10;
}
else if (msgId == SMSG_UPDATE_HOST2)
{
len = -1;
}
else
{
if (msgId >= 0 && static_cast<unsigned int>(msgId)
< packet_lengths_size)
{
len = packet_lengths[msgId];
}
}
if (len == -1 && mInSize > 4)
len = readWord(2);
}
const bool ret = (mInSize >= static_cast<unsigned int>(len));
SDL_mutexV(mMutexIn);
return ret;
}
Network *Network::instance()
{
return mInstance;
}
} // namespace TmwAthena
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