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-rw-r--r--src/mesh/mesh_protocol_enc.h493
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diff --git a/src/mesh/mesh_protocol_enc.h b/src/mesh/mesh_protocol_enc.h
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1/*
2 This file is part of GNUnet.
3 (C) 2001 - 2011 Christian Grothoff (and other contributing authors)
4
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 3, or (at your
8 option) any later version.
9
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
19*/
20
21/**
22 * @author Bartlomiej Polot
23 * @file mesh/mesh_protocol_enc.h
24 */
25
26#ifndef MESH_PROTOCOL_ENC_H_
27#define MESH_PROTOCOL_ENC_H_
28
29#include "platform.h"
30#include "gnunet_util_lib.h"
31#include "mesh_enc.h"
32
33#ifdef __cplusplus
34
35struct GNUNET_MESH_TunnelMessage;
36extern "C"
37{
38#if 0
39 /* keep Emacsens' auto-indent happy */
40}
41#endif
42#endif
43
44/******************************************************************************/
45/******************** MESH NETWORK MESSAGES **************************/
46/******************************************************************************/
47
48GNUNET_NETWORK_STRUCT_BEGIN
49
50/**
51 * Message for mesh connection creation.
52 * TODO onionify path, add random tunnel ID
53 */
54struct GNUNET_MESH_ConnectionCreate
55{
56 /**
57 * Type: GNUNET_MESSAGE_TYPE_MESH_CONNECTION_CREATE
58 *
59 * Size: sizeof(struct GNUNET_MESH_ManipulatePath) +
60 * path_length * sizeof (struct GNUNET_PeerIdentity)
61 */
62 struct GNUNET_MessageHeader header;
63
64 /**
65 * ID of the connection
66 */
67 struct GNUNET_HashCode cid;
68
69 /**
70 * path_length structs defining the *whole* path from the origin [0] to the
71 * final destination [path_length-1].
72 */
73 /* struct GNUNET_PeerIdentity peers[path_length]; */
74};
75
76/**
77 * Message for ack'ing a connection
78 */
79struct GNUNET_MESH_ConnectionACK
80{
81 /**
82 * Type: GNUNET_MESSAGE_TYPE_MESH_CONNECTION_ACK
83 */
84 struct GNUNET_MessageHeader header;
85
86 /**
87 * Always 0.
88 */
89 uint32_t reserved GNUNET_PACKED;
90
91 /**
92 * ID of the connection.
93 */
94 struct GNUNET_HashCode cid;
95
96 /* TODO: signature */
97};
98
99
100/**
101 * Message for encapsulation of a Key eXchange message in a connection.
102 */
103struct GNUNET_MESH_KX
104{
105 /**
106 * Type: GNUNET_MESSAGE_TYPE_MESH_KX.
107 */
108 struct GNUNET_MessageHeader header;
109
110 /**
111 * Always 0.
112 */
113 uint32_t reserved GNUNET_PACKED;
114
115 /**
116 * ID of the connection.
117 */
118 struct GNUNET_HashCode cid;
119
120 /* Specific KX message follows. */
121};
122
123
124/**
125 * Message transmitted with the signed ephemeral key of a peer. The
126 * session key is then derived from the two ephemeral keys (ECDHE).
127 *
128 * As far as possible, same as CORE's EphemeralKeyMessage.
129 */
130struct GNUNET_MESH_KX_Ephemeral
131{
132
133 /**
134 * Message type is GNUNET_MESSAGE_TYPE_MESH_KX_EPHEMERAL.
135 */
136 struct GNUNET_MessageHeader header;
137
138 /**
139 * Status of the sender (should be in "enum PeerStateMachine"), nbo.
140 */
141 int32_t sender_status GNUNET_PACKED;
142
143 /**
144 * An ECC signature of the 'origin' asserting the validity of
145 * the given ephemeral key.
146 */
147 struct GNUNET_CRYPTO_EddsaSignature signature;
148
149 /**
150 * Information about what is being signed.
151 */
152 struct GNUNET_CRYPTO_EccSignaturePurpose purpose;
153
154 /**
155 * At what time was this key created (beginning of validity).
156 */
157 struct GNUNET_TIME_AbsoluteNBO creation_time;
158
159 /**
160 * When does the given ephemeral key expire (end of validity).
161 */
162 struct GNUNET_TIME_AbsoluteNBO expiration_time;
163
164 /**
165 * Ephemeral public ECC key (always for NIST P-521) encoded in a format suitable
166 * for network transmission as created using 'gcry_sexp_sprint'.
167 */
168 struct GNUNET_CRYPTO_EcdhePublicKey ephemeral_key;
169
170 /**
171 * Public key of the signing peer (persistent version, not the ephemeral public key).
172 */
173 struct GNUNET_PeerIdentity origin_identity;
174};
175
176
177/**
178 * We're sending an (encrypted) PING to the other peer to check if he
179 * can decrypt. The other peer should respond with a PONG with the
180 * same content, except this time encrypted with the receiver's key.
181 */
182struct GNUNET_MESH_KX_Ping
183{
184 /**
185 * Message type is GNUNET_MESSAGE_TYPE_MESH_KX_PING.
186 */
187 struct GNUNET_MessageHeader header;
188
189 /**
190 * Seed for the IV
191 */
192 uint32_t iv GNUNET_PACKED;
193
194 /**
195 * Intended target of the PING, used primarily to check
196 * that decryption actually worked.
197 */
198 struct GNUNET_PeerIdentity target;
199
200 /**
201 * Random number chosen to make reply harder.
202 */
203 uint32_t nonce GNUNET_PACKED;
204};
205
206
207/**
208 * Response to a PING. Includes data from the original PING.
209 */
210struct GNUNET_MESH_KX_Pong
211{
212 /**
213 * Message type is GNUNET_MESSAGE_TYPE_MESH_KX_PONG.
214 */
215 struct GNUNET_MessageHeader header;
216
217 /**
218 * Seed for the IV
219 */
220 uint32_t iv GNUNET_PACKED;
221
222 /**
223 * Same nonce as in the reve.
224 */
225 uint32_t nonce GNUNET_PACKED;
226};
227
228
229/**
230 * Tunnel(ed) message.
231 */
232struct GNUNET_MESH_Encrypted
233{
234 /**
235 * Type: GNUNET_MESSAGE_TYPE_MESH_ENCRYPTED
236 */
237 struct GNUNET_MessageHeader header;
238
239 /**
240 * Initialization Vector for payload encryption.
241 */
242 uint32_t iv GNUNET_PACKED;
243
244 /**
245 * ID of the connection.
246 */
247 struct GNUNET_HashCode cid;
248
249 /**
250 * ID of the packet (hop by hop).
251 */
252 uint32_t pid GNUNET_PACKED;
253
254 /**
255 * Number of hops to live.
256 */
257 uint32_t ttl GNUNET_PACKED;
258
259 /**
260 * Encrypted content follows.
261 */
262};
263
264struct GNUNET_MESH_ChannelCreate
265{
266 /**
267 * Type: GNUNET_MESSAGE_TYPE_MESH_CHANNEL_CREATE
268 */
269 struct GNUNET_MessageHeader header;
270
271 /**
272 * ID of the channel
273 */
274 MESH_ChannelNumber chid GNUNET_PACKED;
275
276 /**
277 * Destination port.
278 */
279 uint32_t port GNUNET_PACKED;
280
281 /**
282 * Channel options.
283 */
284 uint32_t opt GNUNET_PACKED;
285};
286
287struct GNUNET_MESH_ChannelManage
288{
289 /**
290 * Type: GNUNET_MESSAGE_TYPE_MESH_CHANNEL_{ACK|NACK|DESTROY}
291 */
292 struct GNUNET_MessageHeader header;
293
294 /**
295 * ID of the channel
296 */
297 MESH_ChannelNumber chid GNUNET_PACKED;
298};
299
300/**
301 * Message for mesh data traffic.
302 */
303struct GNUNET_MESH_Data
304{
305 /**
306 * Type: GNUNET_MESSAGE_TYPE_MESH_UNICAST,
307 * GNUNET_MESSAGE_TYPE_MESH_TO_ORIGIN
308 */
309 struct GNUNET_MessageHeader header;
310
311 /**
312 * Unique ID of the payload message
313 */
314 uint32_t mid GNUNET_PACKED;
315
316 /**
317 * ID of the channel
318 */
319 MESH_ChannelNumber chid GNUNET_PACKED;
320
321 /**
322 * Payload follows
323 */
324};
325
326
327/**
328 * Message to acknowledge end-to-end data.
329 */
330struct GNUNET_MESH_DataACK
331{
332 /**
333 * Type: GNUNET_MESSAGE_TYPE_MESH_DATA_ACK
334 */
335 struct GNUNET_MessageHeader header;
336
337 /**
338 * ID of the channel
339 */
340 MESH_ChannelNumber chid GNUNET_PACKED;
341
342 /**
343 * Bitfield of already-received newer messages
344 * pid + 1 @ LSB
345 * pid + 64 @ MSB
346 */
347 uint64_t futures GNUNET_PACKED;
348
349 /**
350 * Last message ID received.
351 */
352 uint32_t mid GNUNET_PACKED;
353};
354
355
356/**
357 * Message to acknowledge mesh encrypted traffic.
358 */
359struct GNUNET_MESH_ACK
360{
361 /**
362 * Type: GNUNET_MESSAGE_TYPE_MESH_ACK
363 */
364 struct GNUNET_MessageHeader header;
365
366 /**
367 * Maximum packet ID authorized.
368 */
369 uint32_t ack GNUNET_PACKED;
370
371 /**
372 * ID of the connection.
373 */
374 struct GNUNET_HashCode cid;
375};
376
377
378/**
379 * Message to query a peer about its Flow Control status regarding a tunnel.
380 */
381struct GNUNET_MESH_Poll
382{
383 /**
384 * Type: GNUNET_MESSAGE_TYPE_MESH_POLL
385 */
386 struct GNUNET_MessageHeader header;
387
388 /**
389 * Last packet sent.
390 */
391 uint32_t pid GNUNET_PACKED;
392
393 /**
394 * ID of the connection.
395 */
396 struct GNUNET_HashCode cid;
397
398};
399
400
401/**
402 * Message for notifying a disconnection in a path
403 */
404struct GNUNET_MESH_ConnectionBroken
405{
406 /**
407 * Type: GNUNET_MESSAGE_TYPE_MESH_CONNECTION_BROKEN
408 */
409 struct GNUNET_MessageHeader header;
410
411 /**
412 * Always 0.
413 */
414 uint32_t reserved GNUNET_PACKED;
415
416 /**
417 * ID of the connection.
418 */
419 struct GNUNET_HashCode cid;
420
421 /**
422 * ID of the endpoint
423 */
424 struct GNUNET_PeerIdentity peer1;
425
426 /**
427 * ID of the endpoint
428 */
429 struct GNUNET_PeerIdentity peer2;
430
431 /* TODO: signature */
432};
433
434
435/**
436 * Message to destroy a connection.
437 */
438struct GNUNET_MESH_ConnectionDestroy
439{
440 /**
441 * Type: GNUNET_MESSAGE_TYPE_MESH_CONNECTION_DESTROY
442 */
443 struct GNUNET_MessageHeader header;
444
445 /**
446 * Always 0.
447 */
448 uint32_t reserved GNUNET_PACKED;
449
450 /**
451 * ID of the connection.
452 */
453 struct GNUNET_HashCode cid;
454
455 /* TODO: signature */
456};
457
458
459/**
460 * Message to keep a connection alive.
461 */
462struct GNUNET_MESH_ConnectionKeepAlive
463{
464 /**
465 * Type: GNUNET_MESSAGE_TYPE_MESH_(FWD|BCK)_KEEPALIVE
466 */
467 struct GNUNET_MessageHeader header;
468
469 /**
470 * Always 0.
471 */
472 uint32_t reserved GNUNET_PACKED;
473
474 /**
475 * ID of the connection.
476 */
477 struct GNUNET_HashCode cid;
478};
479
480
481
482GNUNET_NETWORK_STRUCT_END
483
484#if 0 /* keep Emacsens' auto-indent happy */
485{
486#endif
487#ifdef __cplusplus
488}
489#endif
490
491/* ifndef MESH_PROTOCOL_H */
492#endif
493/* end of mesh_protocol.h */
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-19 21:42:07 +0000