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
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
|
/***************************************************************************
* Copyright (C) 2005 by Joris Guisson *
* joris.guisson@gmail.com *
* *
* 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 *
* (at your option) 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, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
#ifndef DHTRPCMSG_H
#define DHTRPCMSG_H
#include <ksocketaddress.h>
#include <util/constants.h>
#include "key.h"
#include "database.h"
namespace bt
{
class BDictNode;
}
using bt::Uint8;
using bt::Uint32;
namespace dht
{
class DHT;
class RPCServer;
enum Type
{
RETQ_MSG,
RSP_MSG,
ERR_MSG,
INVALID
};
enum Method
{
PING,
FIND_NODE,
GET_PEERS,
ANNOUNCE_PEER,
NONE
};
/**
* Base class for all RPC messages.
*/
class MsgBase
{
public:
MsgBase(Uint8 mtid,Method m,Type type,const Key & id);
virtual ~MsgBase();
/**
* When this message arrives this function will be called upon the DHT.
* The message should then call the appropriate DHT function (double dispatch)
* @param dh_table Pointer to DHT
*/
virtual void apply(DHT* dh_table) = 0;
/**
* Print the message for debugging purposes.
*/
virtual void print() = 0;
/**
* BEncode the message.
* @param arr Data array
*/
virtual void encode(TQByteArray & arr) = 0;
/// Set the origin (i.e. where the message came from)
void setOrigin(const KNetwork::KSocketAddress & o) {origin = o;}
/// Get the origin
const KNetwork::KInetSocketAddress & getOrigin() const {return origin;}
/// Set the origin (i.e. where the message came from)
void setDestination(const KNetwork::KSocketAddress & o) {origin = o;}
/// Get the origin
const KNetwork::KInetSocketAddress & getDestination() const {return origin;}
/// Get the MTID
Uint8 getMTID() const {return mtid;}
/// Set the MTID
void setMTID(Uint8 m) {mtid = m;}
/// Get the id of the sender
const Key & getID() const {return id;}
/// Get the type of the message
Type getType() const {return type;}
/// Get the message it's method
Method getMethod() const {return method;}
protected:
Uint8 mtid;
Method method;
Type type;
Key id;
KNetwork::KInetSocketAddress origin;
};
/**
* Creates a message out of a BDictNode.
* @param dict The BDictNode
* @param srv The RPCServer
* @return A newly created message or 0 upon error
*/
MsgBase* MakeRPCMsg(bt::BDictNode* dict,RPCServer* srv);
MsgBase* MakeRPCMsgTest(bt::BDictNode* dict,dht::Method req_method);
class ErrMsg : public MsgBase
{
public:
ErrMsg(Uint8 mtid,const Key & id,const TQString & msg);
virtual ~ErrMsg();
virtual void apply(DHT* dh_table);
virtual void print();
virtual void encode(TQByteArray & arr);
private:
TQString msg;
};
class PingReq : public MsgBase
{
public:
PingReq(const Key & id);
virtual ~PingReq();
virtual void apply(DHT* dh_table);
virtual void print();
virtual void encode(TQByteArray & arr);
};
class FindNodeReq : public MsgBase
{
public:
FindNodeReq(const Key & id,const Key & target);
virtual ~FindNodeReq();
virtual void apply(DHT* dh_table);
virtual void print();
virtual void encode(TQByteArray & arr);
const Key & getTarget() const {return target;}
private:
Key target;
};
class GetPeersReq : public MsgBase
{
public:
GetPeersReq(const Key & id,const Key & info_hash);
virtual ~GetPeersReq();
const Key & getInfoHash() const {return info_hash;}
virtual void apply(DHT* dh_table);
virtual void print();
virtual void encode(TQByteArray & arr);
protected:
Key info_hash;
};
class AnnounceReq : public GetPeersReq
{
public:
AnnounceReq(const Key & id,const Key & info_hash,bt::Uint16 port,const Key & token);
virtual ~AnnounceReq();
virtual void apply(DHT* dh_table);
virtual void print();
virtual void encode(TQByteArray & arr);
const Key & getToken() const {return token;}
bt::Uint16 getPort() const {return port;}
private:
bt::Uint16 port;
Key token;
};
class PingRsp : public MsgBase
{
public:
PingRsp(Uint8 mtid,const Key & id);
virtual ~PingRsp();
virtual void apply(DHT* dh_table);
virtual void print();
virtual void encode(TQByteArray & arr);
};
class FindNodeRsp : public MsgBase
{
public:
FindNodeRsp(Uint8 mtid,const Key & id,const TQByteArray & nodes);
virtual ~FindNodeRsp();
virtual void apply(DHT* dh_table);
virtual void print();
virtual void encode(TQByteArray & arr);
const TQByteArray & getNodes() const {return nodes;}
protected:
TQByteArray nodes;
};
class GetPeersRsp : public MsgBase
{
public:
GetPeersRsp(Uint8 mtid,const Key & id,const TQByteArray & data,const Key & token);
GetPeersRsp(Uint8 mtid,const Key & id,const DBItemList & values,const Key & token);
virtual ~GetPeersRsp();
virtual void apply(DHT* dh_table);
virtual void print();
virtual void encode(TQByteArray & arr);
const TQByteArray & getData() const {return data;}
const DBItemList & getItemList() const {return items;}
const Key & getToken() const {return token;}
bool containsNodes() const {return data.size() > 0;}
bool containsValues() const {return data.size() == 0;}
private:
Key token;
TQByteArray data;
DBItemList items;
};
class AnnounceRsp : public MsgBase
{
public:
AnnounceRsp(Uint8 mtid,const Key & id);
virtual ~AnnounceRsp();
virtual void apply(DHT* dh_table);
virtual void print();
virtual void encode(TQByteArray & arr);
};
}
#endif
|
