From 3eeae12c498d1a4dbe969462d2ba841f77ee3ccb Mon Sep 17 00:00:00 2001
From: Andrei Karas <akaras@inbox.ru>
Date: Sun, 2 Jan 2011 01:48:38 +0200
Subject: Initial commit.

This code based on mana client http://www.gitorious.org/mana/mana
and my private repository.
---
 src/net/manaserv/network.cpp | 178 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 178 insertions(+)
 create mode 100644 src/net/manaserv/network.cpp

(limited to 'src/net/manaserv/network.cpp')

diff --git a/src/net/manaserv/network.cpp b/src/net/manaserv/network.cpp
new file mode 100644
index 000000000..c8389bb82
--- /dev/null
+++ b/src/net/manaserv/network.cpp
@@ -0,0 +1,178 @@
+/*
+ *  The Mana Client
+ *  Copyright (C) 2004-2009  The Mana World Development Team
+ *  Copyright (C) 2009-2010  The Mana Developers
+ *
+ *  This file is part of The Mana 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 "log.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>
+
+/**
+ * The local host which is shared for all outgoing connections.
+ */
+namespace
+{
+    ENetHost *client;
+}
+
+namespace ManaServ
+{
+
+typedef std::map<unsigned short, MessageHandler*> MessageHandlers;
+typedef MessageHandlers::iterator MessageHandlerIterator;
+static MessageHandlers mMessageHandlers;
+
+void initialize()
+{
+    if (enet_initialize())
+    {
+        logger->error("Failed to initialize ENet.");
+    }
+
+#if defined(ENET_VERSION) && ENET_VERSION >= ENET_CUTOFF
+    client = enet_host_create(NULL, 3, 0, 0, 0);
+#else
+    client = enet_host_create(NULL, 3, 0, 0);
+#endif
+
+    if (!client)
+    {
+        logger->error("Failed to create the local host.");
+    }
+}
+
+void finalize()
+{
+    if (!client)
+        return; // Wasn't initialized at all
+
+    if (connections)
+    {
+        logger->error("Tried to shutdown the network subsystem while there "
+                "are network connections left!");
+    }
+
+    clearNetworkHandlers();
+    enet_deinitialize();
+}
+
+Connection *getConnection()
+{
+    if (!client)
+    {
+        logger->error("Tried to instantiate a network object before "
+                "initializing the network subsystem!");
+    }
+
+    return new Connection(client);
+}
+
+void registerHandler(MessageHandler *handler)
+{
+    for (const Uint16 *i = handler->handledMessages; *i; i++)
+    {
+        mMessageHandlers[*i] = handler;
+    }
+}
+
+void unregisterHandler(MessageHandler *handler)
+{
+    for (const Uint16 *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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