1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
|
/*
* 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.");
}
client = enet_host_create(NULL, 3, 0, 0);
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->log("Disconnected.");
// Reset the server information.
event.peer->data = 0;
break;
case ENET_EVENT_TYPE_NONE:
default:
break;
}
}
}
}
|
