aboutsummaryrefslogtreecommitdiff
path: root/src/core/core.h
blob: b76528a8ec275f33d960a4cc6babfedfbcec1647 (plain) (blame)
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
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
/*
     This file is part of GNUnet.
     (C) 2009, 2010 Christian Grothoff (and other contributing authors)

     GNUnet 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 3, or (at your
     option) any later version.

     GNUnet 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 GNUnet; see the file COPYING.  If not, write to the
     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
     Boston, MA 02111-1307, USA.
*/

/**
 * @file core/core.h
 * @brief common internal definitions for core service
 * @author Christian Grothoff
 */
#ifndef CORE_H
#define CORE_H

#include "gnunet_bandwidth_lib.h"
#include "gnunet_transport_service.h"
#include "gnunet_crypto_lib.h"
#include "gnunet_time_lib.h"

/**
 * General core debugging.
 */
#define DEBUG_CORE GNUNET_EXTRA_LOGGING

/**
 * Definition of bits in the InitMessage's options field that specify
 * which events this client cares about.  Note that inbound messages
 * for handlers that were specifically registered are always
 * transmitted to the client.
 */
#define GNUNET_CORE_OPTION_NOTHING             0
#define GNUNET_CORE_OPTION_SEND_STATUS_CHANGE  4
#define GNUNET_CORE_OPTION_SEND_FULL_INBOUND   8
#define GNUNET_CORE_OPTION_SEND_HDR_INBOUND   16
#define GNUNET_CORE_OPTION_SEND_FULL_OUTBOUND 32
#define GNUNET_CORE_OPTION_SEND_HDR_OUTBOUND  64


/**
 * Message transmitted core clients to gnunet-service-core
 * to start the interaction.  This header is followed by
 * uint16_t type values specifying which messages this
 * client is interested in.
 */
struct InitMessage
{

  /**
   * Header with type GNUNET_MESSAGE_TYPE_CORE_INIT.
   */
  struct GNUNET_MessageHeader header;

  /**
   * Options, see GNUNET_CORE_OPTION_ values.
   */
  uint32_t options GNUNET_PACKED;

};


/**
 * Message transmitted by the gnunet-service-core process
 * to its clients in response to an INIT message.
 */
struct InitReplyMessage
{

  /**
   * Header with type GNUNET_MESSAGE_TYPE_CORE_INIT_REPLY
   */
  struct GNUNET_MessageHeader header;

  /**
   * Always zero.
   */
  uint32_t reserved GNUNET_PACKED;

  /**
   * Public key of the local peer.
   */
  struct GNUNET_PeerIdentity my_identity;

};


/**
 * Message sent by the service to clients to notify them
 * about a peer connecting.
 */
struct ConnectNotifyMessage
{
  /**
   * Header with type GNUNET_MESSAGE_TYPE_CORE_NOTIFY_CONNECT
   */
  struct GNUNET_MessageHeader header;

  /**
   * Number of ATS key-value pairs that follow this struct
   * (excluding the 0-terminator).
   */
  uint32_t ats_count GNUNET_PACKED;

  /**
   * Identity of the connecting peer.
   */
  struct GNUNET_PeerIdentity peer;

};


/**
 * Message sent by the service to clients to notify them
 * about a peer changing status.
 */
struct PeerStatusNotifyMessage
{
  /**
   * Header with type GNUNET_MESSAGE_TYPE_CORE_NOTIFY_PEER_STATUS
   */
  struct GNUNET_MessageHeader header;

  /**
   * Number of ATS key-value pairs that follow this struct
   * (excluding the 0-terminator).
   */
  uint32_t ats_count GNUNET_PACKED;

  /**
   * When the peer would time out (unless we see activity)
   */
  struct GNUNET_TIME_AbsoluteNBO timeout;

  /**
   * Available bandwidth from the peer.
   */
  struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in;

  /**
   * Available bandwidth to the peer.
   */
  struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out;

  /**
   * Identity of the peer.
   */
  struct GNUNET_PeerIdentity peer;

  /**
   * First of the ATS information blocks (we must have at least
   * one due to the 0-termination requirement).
   */
  struct GNUNET_ATS_Information ats;

};


/**
 * Message sent by the service to clients to notify them
 * about a peer disconnecting.
 */
struct DisconnectNotifyMessage
{
  /**
   * Header with type GNUNET_MESSAGE_TYPE_CORE_NOTIFY_DISCONNECT.
   */
  struct GNUNET_MessageHeader header;

  /**
   * Always zero.
   */
  uint32_t reserved GNUNET_PACKED;

  /**
   * Identity of the connecting peer.
   */
  struct GNUNET_PeerIdentity peer;

};


/**
 * Message sent by the service to clients to notify them about
 * messages being received or transmitted.  This overall message is
 * followed by the real message, or just the header of the real
 * message (depending on the client's preferences).  The receiver can
 * tell if he got the full message or only a partial message by
 * looking at the size field in the header of NotifyTrafficMessage and
 * checking it with the size field in the message that follows.
 */
struct NotifyTrafficMessage
{
  /**
   * Header with type GNUNET_MESSAGE_TYPE_CORE_NOTIFY_INBOUND
   * or GNUNET_MESSAGE_TYPE_CORE_NOTIFY_OUTBOUND.
   */
  struct GNUNET_MessageHeader header;

  /**
   * Number of ATS key-value pairs that follow this struct
   * (excluding the 0-terminator).
   */
  uint32_t ats_count GNUNET_PACKED;

  /**
   * Identity of the receiver or sender.
   */
  struct GNUNET_PeerIdentity peer;

  /**
   * First of the ATS information blocks (we must have at least
   * one due to the 0-termination requirement).
   */
  struct GNUNET_ATS_Information ats;

};


/**
 * Client notifying core about the maximum-priority
 * message it has in the queue for a particular target.
 */
struct SendMessageRequest
{
  /**
   * Header with type GNUNET_MESSAGE_TYPE_CORE_SEND_REQUEST
   */
  struct GNUNET_MessageHeader header;

  /**
   * How important is this message?
   */
  uint32_t priority GNUNET_PACKED;

  /**
   * By what time would the sender really like to see this
   * message transmitted?
   */
  struct GNUNET_TIME_AbsoluteNBO deadline;

  /**
   * Identity of the intended target.
   */
  struct GNUNET_PeerIdentity peer;

  /**
   * How large is the client's message queue for this peer?
   */
  uint32_t queue_size GNUNET_PACKED;

  /**
   * How large is the message?
   */
  uint16_t size GNUNET_PACKED;

  /**
   * Counter for this peer to match SMRs to replies.
   */
  uint16_t smr_id GNUNET_PACKED;

};


/**
 * Core notifying client that it is allowed to now
 * transmit a message to the given target
 * (response to GNUNET_MESSAGE_TYPE_CORE_SEND_REQUEST).
 */
struct SendMessageReady
{
  /**
   * Header with type GNUNET_MESSAGE_TYPE_CORE_SEND_READY
   */
  struct GNUNET_MessageHeader header;

  /**
   * How many bytes are allowed for transmission?
   * Guaranteed to be at least as big as the requested size,
   * or ZERO if the request is rejected (will timeout,
   * peer disconnected, queue full, etc.).
   */
  uint16_t size GNUNET_PACKED;

  /**
   * smr_id from the request.
   */
  uint16_t smr_id GNUNET_PACKED;

  /**
   * Identity of the intended target.
   */
  struct GNUNET_PeerIdentity peer;

};


/**
 * Client asking core to transmit a particular message to a particular
 * target (response to GNUNET_MESSAGE_TYPE_CORE_SEND_READY).
 */
struct SendMessage
{
  /**
   * Header with type GNUNET_MESSAGE_TYPE_CORE_SEND
   */
  struct GNUNET_MessageHeader header;

  /**
   * How important is this message?
   */
  uint32_t priority GNUNET_PACKED;

  /**
   * By what time would the sender really like to see this
   * message transmitted?
   */
  struct GNUNET_TIME_AbsoluteNBO deadline;

  /**
   * Identity of the receiver or sender.
   */
  struct GNUNET_PeerIdentity peer;

  /**
   * GNUNET_YES if corking is allowed, GNUNET_NO if not.
   */
  uint32_t cork GNUNET_PACKED;

  /**
   * Always 0.
   */
  uint64_t reserved GNUNET_PACKED;

};


/**
 * Client asking core to connect to a particular target.  There is no
 * response from the core to this type of request (however, if an
 * actual connection is created or destroyed, be it because of this
 * type request or not, the core generally needs to notify the
 * clients).
 */
struct ConnectMessage
{
  /**
   * Header with type GNUNET_MESSAGE_TYPE_REQUEST_CONNECT or
   * GNUNET_MESSAGE_TYPE_REQUEST_DISCONNECT.
   */
  struct GNUNET_MessageHeader header;

  /**
   * For alignment.
   */
  uint32_t reserved GNUNET_PACKED;

  /**
   * Identity of the other peer.
   */
  struct GNUNET_PeerIdentity peer;

};

#endif
/* end of core.h */