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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) 2011-2013 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/network.h"
#include "configuration.h"
#include "logger.h"
#include "net/eathena/protocol.h"
#include "utils/gettext.h"
#include <assert.h>
#include <sstream>
#include "debug.h"
namespace EAthena
{
/** Warning: buffers and other variables are shared,
so there can be only one connection active at a time */
short packet_lengths[] =
{
10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
// #0x0040
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 50, 3, -1, 55, 17, 3, 37, 46, -1, 23, -1, 3, 108, 3, 2,
3, 28, 19, 11, 3, -1, 9, 5, 55, 53, 58, 60, 44, 2, 6, 6,
// #0x0080
7, 3, 2, 2, 2, 5, 16, 12, 10, 7, 29, 23, -1, -1, -1, 0,
7, 22, 28, 2, 6, 30, -1, -1, 3, -1, -1, 5, 9, 17, 17, 6,
23, 6, 6, -1, -1, -1, -1, 8, 7, 6, 7, 4, 7, 0, -1, 6,
8, 8, 3, 3, -1, 6, 6, -1, 7, 6, 2, 5, 6, 44, 5, 3,
// #0x00C0
7, 2, 6, 8, 6, 7, -1, -1, -1, -1, 3, 3, 6, 6, 2, 27,
3, 4, 4, 2, -1, -1, 3, -1, 6, 14, 3, -1, 28, 29, -1, -1,
30, 30, 26, 2, 6, 26, 3, 3, 8, 19, 5, 2, 3, 2, 2, 2,
3, 2, 6, 8, 21, 8, 8, 2, 2, 26, 3, -1, 6, 27, 30, 10,
// #0x0100
2, 6, 6, 30, 79, 31, 10, 10, -1, -1, 4, 6, 6, 2, 11, -1,
10, 39, 4, 10, 31, 35, 10, 18, 2, 13, 15, 20, 68, 2, 3, 16,
6, 14, -1, -1, 21, 8, 8, 8, 8, 8, 2, 2, 3, 4, 2, -1,
6, 86, 6, -1, -1, 7, -1, 6, 3, 16, 4, 4, 4, 6, 24, 26,
// #0x0140
22, 14, 6, 10, 23, 19, 6, 39, 8, 9, 6, 27, -1, 2, 6, 6,
110, 6, -1, -1, -1, -1, -1, 6, -1, 54, 66, 54, 90, 42, 6, 42,
-1, -1, -1, -1, -1, 30, -1, 3, 14, 3, 30, 10, 43, 14, 186, 182,
14, 30, 10, 3, -1, 6, 106, -1, 4, 5, 4, -1, 6, 7, -1, -1,
// #0x0180
6, 3, 106, 10, 10, 34, 0, 6, 8, 4, 4, 4, 29, -1, 10, 6,
90, 86, 24, 6, 30, 102, 9, 4, 8, 4, 14, 10, 4, 6, 2, 6,
3, 3, 35, 5, 11, 26, -1, 4, 4, 6, 10, 12, 6, -1, 4, 4,
11, 7, -1, 67, 12, 18, 114, 6, 3, 6, 26, 26, 26, 26, 2, 3,
// #0x01C0
2, 14, 10, -1, 22, 22, 4, 2, 13, 97, 0, 9, 9, 29, 6, 28,
8, 14, 10, 35, 6, 8, 4, 11, 54, 53, 60, 2, -1, 47, 33, 6,
30, 8, 34, 14, 2, 6, 26, 2, 28, 81, 6, 10, 26, 2, -1, -1,
-1, -1, 20, 10, 32, 9, 34, 14, 2, 6, 48, 56, -1, 4, 5, 10,
// #0x0200
26, 0, 0, 0, 18, 0, 0, 0, 0, 0, 0, 19, 10, 0, 0, 0,
2, -1, 16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-1, 122, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
// #0x0240
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
// #0x0280
0, 0, 0, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 191, 0, 0, 0, 0, 0, 0,
// #0x02C0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
// #0x0300
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
};
static constexpr const int packet_lengths_size
= static_cast<int>(sizeof(packet_lengths) / sizeof (short));
static constexpr const unsigned int messagesSize = 0xffff;
Network *Network::mInstance = nullptr;
Network::Network() :
Ea::Network()
{
mInstance = this;
mMessageHandlers = new MessageHandler*[messagesSize];
memset(&mMessageHandlers[0], 0, sizeof(MessageHandler*) * 0xffff);
}
Network::~Network()
{
clearHandlers();
delete mMessageHandlers;
mMessageHandlers = nullptr;
mInstance = nullptr;
}
void Network::registerHandler(MessageHandler *handler)
{
if (!handler)
return;
for (const uint16_t *i = handler->handledMessages; *i; ++i)
mMessageHandlers[*i] = handler;
handler->setNetwork(this);
}
void Network::unregisterHandler(MessageHandler *handler)
{
if (!handler)
return;
for (const uint16_t *i = handler->handledMessages; *i; ++i)
mMessageHandlers[*i] = nullptr;
handler->setNetwork(nullptr);
}
void Network::clearHandlers()
{
for (int f = 0; f < messagesSize; f ++)
{
if (mMessageHandlers[f])
{
mMessageHandlers[f]->setNetwork(nullptr);
mMessageHandlers[f] = nullptr;
}
}
}
void Network::dispatchMessages()
{
while (messageReady())
{
MessageIn *const msg = getNextMessage();
if (msg->getLength() == 0)
logger->safeError("Zero length packet received. Exiting.");
const int id = msg->getId();
if (id >= 0 && id < messagesSize)
{
MessageHandler *const handler = mMessageHandlers[id];
if (handler)
handler->handleMessage(*msg);
else
logger->log("Unhandled packet: %x", msg->getId());
}
skip(msg->getLength());
delete msg;
}
}
bool Network::messageReady()
{
int len = -1;
SDL_mutexP(mMutex);
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
len = packet_lengths[msgId];
if (len == -1 && mInSize > 4)
len = readWord(2);
}
const bool ret = (mInSize >= static_cast<unsigned int>(len));
SDL_mutexV(mMutex);
return ret;
}
MessageIn *Network::getNextMessage()
{
while (!messageReady())
{
if (mState == NET_ERROR)
break;
}
SDL_mutexP(mMutex);
const 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 >= 0 && msgId < packet_lengths_size)
len = packet_lengths[msgId];
}
if (len == -1)
len = readWord(2);
#ifdef ENABLEDEBUGLOG
logger->dlog(strprintf("Received packet 0x%x of length %d\n",
msgId, len));
#endif
MessageIn *const msg = new MessageIn(mInBuffer, len);
SDL_mutexV(mMutex);
return msg;
}
Network *Network::instance()
{
return mInstance;
}
} // namespace EAthena
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