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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) 2011-2012 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/manaserv/network.h"
#include "logger.h"
#include "net/manaserv/connection.h"
#include "net/manaserv/internal.h"
#include "net/manaserv/messagehandler.h"
#include "net/manaserv/messagein.h"
#include "enet/enet.h"
#include <map>
#include "debug.h"
/**
* The local host which is shared for all outgoing connections.
*/
namespace
{
ENetHost *client;
}
namespace ManaServ
{
typedef std::map<unsigned short, MessageHandler*> MessageHandlers;
typedef MessageHandlers::const_iterator MessageHandlerIterator;
static MessageHandlers mMessageHandlers;
void initialize()
{
if (enet_initialize())
{
logger->safeError("Failed to initialize ENet.");
}
#if defined(ENET_VERSION) && ENET_VERSION >= ENET_CUTOFF
client = enet_host_create(nullptr, 3, 0, 0, 0);
#else
client = enet_host_create(nullptr, 3, 0, 0);
#endif
if (!client)
{
logger->safeError("Failed to create the local host.");
}
}
void finalize()
{
if (!client)
return; // Wasn't initialized at all
if (connections)
{
logger->safeError("Tried to shutdown the network subsystem "
"while there are network connections left!");
}
clearNetworkHandlers();
enet_deinitialize();
}
Connection *getConnection()
{
if (!client)
{
logger->safeError("Tried to instantiate a network object before "
"initializing the network subsystem!");
}
return new Connection(client);
}
void registerHandler(MessageHandler *handler)
{
for (const uint16_t *i = handler->handledMessages; *i; i++)
mMessageHandlers[*i] = handler;
}
void unregisterHandler(MessageHandler *handler)
{
for (const uint16_t *i = handler->handledMessages; *i; i++)
mMessageHandlers.erase(*i);
}
void clearNetworkHandlers()
{
mMessageHandlers.clear();
}
/**
* Dispatches a message to the appropriate message handler and
* destroys it afterwards.
*/
namespace
{
void dispatchMessage(ENetPacket *packet)
{
MessageIn msg((const char *)packet->data, packet->dataLength);
MessageHandlerIterator iter = mMessageHandlers.find(msg.getId());
if (iter != mMessageHandlers.end())
{
//logger->log("Received packet %x (%i B)",
// msg.getId(), msg.getLength());
iter->second->handleMessage(msg);
}
else
{
logger->log("Unhandled packet %x (%i B)",
msg.getId(), msg.getLength());
}
// Clean up the packet now that we're done using it.
enet_packet_destroy(packet);
}
}
void flush()
{
ENetEvent event;
// Check if there are any new events
while (enet_host_service(client, &event, 0) > 0)
{
switch (event.type)
{
case ENET_EVENT_TYPE_CONNECT:
logger->log("Connected to port %d.", event.peer->address.port);
// Store any relevant server information here.
event.peer->data = 0;
break;
case ENET_EVENT_TYPE_RECEIVE:
dispatchMessage(event.packet);
break;
case ENET_EVENT_TYPE_DISCONNECT:
logger->log1("Disconnected.");
// Reset the server information.
event.peer->data = 0;
break;
case ENET_EVENT_TYPE_NONE:
default:
break;
}
}
}
}
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