diff options
Diffstat (limited to 'src/messenger/gnunet-service-messenger_member.c')
-rw-r--r-- | src/messenger/gnunet-service-messenger_member.c | 415 |
1 files changed, 0 insertions, 415 deletions
diff --git a/src/messenger/gnunet-service-messenger_member.c b/src/messenger/gnunet-service-messenger_member.c deleted file mode 100644 index 976b68fe6..000000000 --- a/src/messenger/gnunet-service-messenger_member.c +++ /dev/null | |||
@@ -1,415 +0,0 @@ | |||
1 | /* | ||
2 | This file is part of GNUnet. | ||
3 | Copyright (C) 2020--2021 GNUnet e.V. | ||
4 | |||
5 | GNUnet is free software: you can redistribute it and/or modify it | ||
6 | under the terms of the GNU Affero General Public License as published | ||
7 | by the Free Software Foundation, either version 3 of the License, | ||
8 | or (at your 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 | Affero General Public License for more details. | ||
14 | |||
15 | You should have received a copy of the GNU Affero General Public License | ||
16 | along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
17 | |||
18 | SPDX-License-Identifier: AGPL3.0-or-later | ||
19 | */ | ||
20 | /** | ||
21 | * @author Tobias Frisch | ||
22 | * @file src/messenger/gnunet-service-messenger_member.c | ||
23 | * @brief GNUnet MESSENGER service | ||
24 | */ | ||
25 | |||
26 | #include "gnunet-service-messenger_member.h" | ||
27 | |||
28 | #include "gnunet-service-messenger_member_session.h" | ||
29 | |||
30 | struct GNUNET_MESSENGER_Member* | ||
31 | create_member (struct GNUNET_MESSENGER_MemberStore *store, | ||
32 | const struct GNUNET_ShortHashCode *id) | ||
33 | { | ||
34 | GNUNET_assert (store); | ||
35 | |||
36 | struct GNUNET_MESSENGER_Member *member = GNUNET_new(struct GNUNET_MESSENGER_Member); | ||
37 | |||
38 | member->store = store; | ||
39 | |||
40 | if (id) | ||
41 | GNUNET_memcpy(&(member->id), id, sizeof(member->id)); | ||
42 | else if (GNUNET_YES != generate_free_member_id(&(member->id), store->members)) | ||
43 | { | ||
44 | GNUNET_free (member); | ||
45 | return NULL; | ||
46 | } | ||
47 | |||
48 | member->sessions = GNUNET_CONTAINER_multihashmap_create(2, GNUNET_NO); | ||
49 | |||
50 | return member; | ||
51 | } | ||
52 | |||
53 | static int | ||
54 | iterate_destroy_session (void *cls, | ||
55 | const struct GNUNET_HashCode *key, | ||
56 | void *value) | ||
57 | { | ||
58 | struct GNUNET_MESSENGER_MemberSession *session = value; | ||
59 | destroy_member_session(session); | ||
60 | return GNUNET_YES; | ||
61 | } | ||
62 | |||
63 | void | ||
64 | destroy_member (struct GNUNET_MESSENGER_Member *member) | ||
65 | { | ||
66 | GNUNET_assert((member) && (member->sessions)); | ||
67 | |||
68 | GNUNET_CONTAINER_multihashmap_iterate (member->sessions, iterate_destroy_session, NULL); | ||
69 | GNUNET_CONTAINER_multihashmap_destroy (member->sessions); | ||
70 | |||
71 | GNUNET_free (member); | ||
72 | } | ||
73 | |||
74 | const struct GNUNET_ShortHashCode* | ||
75 | get_member_id (const struct GNUNET_MESSENGER_Member *member) | ||
76 | { | ||
77 | GNUNET_assert (member); | ||
78 | |||
79 | return &(member->id); | ||
80 | } | ||
81 | |||
82 | static int | ||
83 | callback_scan_for_sessions (void *cls, | ||
84 | const char *filename) | ||
85 | { | ||
86 | struct GNUNET_MESSENGER_Member *member = cls; | ||
87 | |||
88 | if (GNUNET_YES == GNUNET_DISK_directory_test (filename, GNUNET_YES)) | ||
89 | { | ||
90 | char *directory; | ||
91 | |||
92 | GNUNET_asprintf (&directory, "%s%c", filename, DIR_SEPARATOR); | ||
93 | |||
94 | load_member_session(member, directory); | ||
95 | GNUNET_free (directory); | ||
96 | } | ||
97 | |||
98 | return GNUNET_OK; | ||
99 | } | ||
100 | |||
101 | void | ||
102 | load_member (struct GNUNET_MESSENGER_MemberStore *store, | ||
103 | const char *directory) | ||
104 | { | ||
105 | GNUNET_assert ((store) && (directory)); | ||
106 | |||
107 | char *config_file; | ||
108 | GNUNET_asprintf (&config_file, "%s%s", directory, "member.cfg"); | ||
109 | |||
110 | struct GNUNET_MESSENGER_Member *member = NULL; | ||
111 | |||
112 | if (GNUNET_YES != GNUNET_DISK_file_test (config_file)) | ||
113 | goto free_config; | ||
114 | |||
115 | GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Load member configuration: %s\n", config_file); | ||
116 | |||
117 | struct GNUNET_CONFIGURATION_Handle *cfg = GNUNET_CONFIGURATION_create (); | ||
118 | |||
119 | if (GNUNET_OK == GNUNET_CONFIGURATION_parse (cfg, config_file)) | ||
120 | { | ||
121 | struct GNUNET_ShortHashCode id; | ||
122 | |||
123 | if (GNUNET_OK != GNUNET_CONFIGURATION_get_data (cfg, "member", "id", &id, sizeof(id))) | ||
124 | goto destroy_config; | ||
125 | |||
126 | member = add_store_member(store, &id); | ||
127 | } | ||
128 | |||
129 | destroy_config: | ||
130 | |||
131 | GNUNET_CONFIGURATION_destroy (cfg); | ||
132 | |||
133 | free_config: | ||
134 | GNUNET_free(config_file); | ||
135 | |||
136 | if (!member) | ||
137 | return; | ||
138 | |||
139 | char *scan_dir; | ||
140 | GNUNET_asprintf (&scan_dir, "%s%s%c", directory, "sessions", DIR_SEPARATOR); | ||
141 | |||
142 | if (GNUNET_OK == GNUNET_DISK_directory_test (scan_dir, GNUNET_YES)) | ||
143 | GNUNET_DISK_directory_scan (scan_dir, callback_scan_for_sessions, member); | ||
144 | |||
145 | GNUNET_free(scan_dir); | ||
146 | } | ||
147 | |||
148 | static int | ||
149 | iterate_load_next_session (void *cls, | ||
150 | const struct GNUNET_HashCode *key, | ||
151 | void *value) | ||
152 | { | ||
153 | const char* sessions_directory = cls; | ||
154 | |||
155 | char* load_dir; | ||
156 | GNUNET_asprintf (&load_dir, "%s%s%c", sessions_directory, GNUNET_h2s(key), DIR_SEPARATOR); | ||
157 | |||
158 | struct GNUNET_MESSENGER_MemberSession *session = value; | ||
159 | |||
160 | if (GNUNET_YES == GNUNET_DISK_directory_test (load_dir, GNUNET_YES)) | ||
161 | load_member_session_next (session, load_dir); | ||
162 | |||
163 | GNUNET_free (load_dir); | ||
164 | return GNUNET_YES; | ||
165 | } | ||
166 | |||
167 | void | ||
168 | load_member_next_sessions (const struct GNUNET_MESSENGER_Member *member, | ||
169 | const char *directory) | ||
170 | { | ||
171 | GNUNET_assert ((member) && (directory)); | ||
172 | |||
173 | char* load_dir; | ||
174 | GNUNET_asprintf (&load_dir, "%s%s%c", directory, "sessions", DIR_SEPARATOR); | ||
175 | |||
176 | GNUNET_CONTAINER_multihashmap_iterate (member->sessions, iterate_load_next_session, load_dir); | ||
177 | |||
178 | GNUNET_free(load_dir); | ||
179 | } | ||
180 | |||
181 | static int | ||
182 | iterate_save_session (void *cls, | ||
183 | const struct GNUNET_HashCode *key, | ||
184 | void *value) | ||
185 | { | ||
186 | const char* sessions_directory = cls; | ||
187 | |||
188 | char* save_dir; | ||
189 | GNUNET_asprintf (&save_dir, "%s%s%c", sessions_directory, GNUNET_h2s(key), DIR_SEPARATOR); | ||
190 | |||
191 | struct GNUNET_MESSENGER_MemberSession *session = value; | ||
192 | |||
193 | if ((GNUNET_YES == GNUNET_DISK_directory_test (save_dir, GNUNET_NO)) || | ||
194 | (GNUNET_OK == GNUNET_DISK_directory_create (save_dir))) | ||
195 | save_member_session (session, save_dir); | ||
196 | |||
197 | GNUNET_free (save_dir); | ||
198 | return GNUNET_YES; | ||
199 | } | ||
200 | |||
201 | void | ||
202 | save_member (struct GNUNET_MESSENGER_Member *member, | ||
203 | const char *directory) | ||
204 | { | ||
205 | GNUNET_assert ((member) && (directory)); | ||
206 | |||
207 | char *config_file; | ||
208 | GNUNET_asprintf (&config_file, "%s%s", directory, "member.cfg"); | ||
209 | |||
210 | GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Save member configuration: %s\n", config_file); | ||
211 | |||
212 | struct GNUNET_CONFIGURATION_Handle *cfg = GNUNET_CONFIGURATION_create (); | ||
213 | |||
214 | char *id_data = GNUNET_STRINGS_data_to_string_alloc (&(member->id), sizeof(member->id)); | ||
215 | |||
216 | if (id_data) | ||
217 | { | ||
218 | GNUNET_CONFIGURATION_set_value_string (cfg, "member", "id", id_data); | ||
219 | |||
220 | GNUNET_free(id_data); | ||
221 | } | ||
222 | |||
223 | GNUNET_CONFIGURATION_write (cfg, config_file); | ||
224 | GNUNET_CONFIGURATION_destroy (cfg); | ||
225 | |||
226 | GNUNET_free(config_file); | ||
227 | |||
228 | char* save_dir; | ||
229 | GNUNET_asprintf (&save_dir, "%s%s%c", directory, "sessions", DIR_SEPARATOR); | ||
230 | |||
231 | if ((GNUNET_YES == GNUNET_DISK_directory_test (save_dir, GNUNET_NO)) || | ||
232 | (GNUNET_OK == GNUNET_DISK_directory_create (save_dir))) | ||
233 | GNUNET_CONTAINER_multihashmap_iterate (member->sessions, iterate_save_session, save_dir); | ||
234 | |||
235 | GNUNET_free(save_dir); | ||
236 | } | ||
237 | |||
238 | static void | ||
239 | sync_session_contact_from_next (struct GNUNET_MESSENGER_MemberSession *session, | ||
240 | struct GNUNET_MESSENGER_MemberSession *next) | ||
241 | { | ||
242 | GNUNET_assert((session) && (next)); | ||
243 | |||
244 | if (session == next) | ||
245 | return; | ||
246 | |||
247 | if (next->next) | ||
248 | sync_session_contact_from_next (session, next->next); | ||
249 | else | ||
250 | session->contact = next->contact; | ||
251 | } | ||
252 | |||
253 | static int | ||
254 | iterate_sync_session_contact (void *cls, | ||
255 | const struct GNUNET_HashCode *key, | ||
256 | void *value) | ||
257 | { | ||
258 | struct GNUNET_MESSENGER_MemberSession *session = value; | ||
259 | |||
260 | if (session->next) | ||
261 | sync_session_contact_from_next (session, session->next); | ||
262 | |||
263 | return GNUNET_YES; | ||
264 | } | ||
265 | |||
266 | void | ||
267 | sync_member_contacts (struct GNUNET_MESSENGER_Member *member) | ||
268 | { | ||
269 | GNUNET_assert ((member) && (member->sessions)); | ||
270 | |||
271 | GNUNET_CONTAINER_multihashmap_iterate (member->sessions, iterate_sync_session_contact, NULL); | ||
272 | } | ||
273 | |||
274 | struct GNUNET_MESSENGER_MemberSession* | ||
275 | get_member_session (const struct GNUNET_MESSENGER_Member *member, | ||
276 | const struct GNUNET_IDENTITY_PublicKey *public_key) | ||
277 | { | ||
278 | GNUNET_assert ((member) && (public_key)); | ||
279 | |||
280 | struct GNUNET_HashCode hash; | ||
281 | GNUNET_CRYPTO_hash(public_key, sizeof(*public_key), &hash); | ||
282 | |||
283 | return GNUNET_CONTAINER_multihashmap_get(member->sessions, &hash); | ||
284 | } | ||
285 | |||
286 | struct GNUNET_MESSENGER_ClosureSearchSession { | ||
287 | const struct GNUNET_MESSENGER_Message *message; | ||
288 | const struct GNUNET_HashCode *hash; | ||
289 | |||
290 | struct GNUNET_MESSENGER_MemberSession *match; | ||
291 | }; | ||
292 | |||
293 | static int | ||
294 | iterate_search_session (void *cls, | ||
295 | const struct GNUNET_HashCode *key, | ||
296 | void *value) | ||
297 | { | ||
298 | struct GNUNET_MESSENGER_ClosureSearchSession* search = cls; | ||
299 | struct GNUNET_MESSENGER_MemberSession *session = value; | ||
300 | |||
301 | if (GNUNET_OK != verify_member_session_as_sender(session, search->message, search->hash)) | ||
302 | return GNUNET_YES; | ||
303 | |||
304 | search->match = session; | ||
305 | return GNUNET_NO; | ||
306 | } | ||
307 | |||
308 | static struct GNUNET_MESSENGER_MemberSession* | ||
309 | try_member_session (struct GNUNET_MESSENGER_Member *member, | ||
310 | const struct GNUNET_IDENTITY_PublicKey *public_key) | ||
311 | { | ||
312 | struct GNUNET_MESSENGER_MemberSession* session = get_member_session(member, public_key); | ||
313 | |||
314 | if (session) | ||
315 | return session; | ||
316 | |||
317 | session = create_member_session(member, public_key); | ||
318 | |||
319 | if (session) | ||
320 | add_member_session(member, session); | ||
321 | |||
322 | return session; | ||
323 | } | ||
324 | |||
325 | struct GNUNET_MESSENGER_MemberSession* | ||
326 | get_member_session_of (struct GNUNET_MESSENGER_Member *member, | ||
327 | const struct GNUNET_MESSENGER_Message *message, | ||
328 | const struct GNUNET_HashCode *hash) | ||
329 | { | ||
330 | GNUNET_assert ((member) && (message) && (hash) && | ||
331 | (0 == GNUNET_memcmp(&(member->id), &(message->header.sender_id)))); | ||
332 | |||
333 | if (GNUNET_MESSENGER_KIND_INFO == message->header.kind) | ||
334 | return try_member_session(member, &(message->body.info.host_key)); | ||
335 | else if (GNUNET_MESSENGER_KIND_JOIN == message->header.kind) | ||
336 | return try_member_session(member, &(message->body.join.key)); | ||
337 | |||
338 | struct GNUNET_MESSENGER_ClosureSearchSession search; | ||
339 | |||
340 | search.message = message; | ||
341 | search.hash = hash; | ||
342 | |||
343 | search.match = NULL; | ||
344 | GNUNET_CONTAINER_multihashmap_iterate(member->sessions, iterate_search_session, &search); | ||
345 | |||
346 | return search.match; | ||
347 | } | ||
348 | |||
349 | void | ||
350 | add_member_session (struct GNUNET_MESSENGER_Member *member, | ||
351 | struct GNUNET_MESSENGER_MemberSession *session) | ||
352 | { | ||
353 | if (!session) | ||
354 | return; | ||
355 | |||
356 | GNUNET_assert((member) && (session->member == member)); | ||
357 | |||
358 | const struct GNUNET_IDENTITY_PublicKey *public_key = get_member_session_public_key(session); | ||
359 | |||
360 | struct GNUNET_HashCode hash; | ||
361 | GNUNET_CRYPTO_hash(public_key, sizeof(*public_key), &hash); | ||
362 | |||
363 | if (GNUNET_OK != GNUNET_CONTAINER_multihashmap_put( | ||
364 | member->sessions, &hash, session, | ||
365 | GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST)) | ||
366 | GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Adding a member session failed: %s\n", | ||
367 | GNUNET_h2s(&hash)); | ||
368 | } | ||
369 | |||
370 | void | ||
371 | remove_member_session (struct GNUNET_MESSENGER_Member *member, | ||
372 | struct GNUNET_MESSENGER_MemberSession *session) | ||
373 | { | ||
374 | GNUNET_assert ((member) && (session) && (session->member == member)); | ||
375 | |||
376 | const struct GNUNET_IDENTITY_PublicKey *public_key = get_member_session_public_key(session); | ||
377 | |||
378 | struct GNUNET_HashCode hash; | ||
379 | GNUNET_CRYPTO_hash(public_key, sizeof(*public_key), &hash); | ||
380 | |||
381 | if (GNUNET_YES != GNUNET_CONTAINER_multihashmap_remove(member->sessions, &hash, session)) | ||
382 | GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Removing a member session failed: %s\n", | ||
383 | GNUNET_h2s(&hash)); | ||
384 | } | ||
385 | |||
386 | struct GNUNET_MESSENGER_ClosureIterateSessions { | ||
387 | GNUNET_MESSENGER_MemberIteratorCallback it; | ||
388 | void *cls; | ||
389 | }; | ||
390 | |||
391 | static int | ||
392 | iterate_member_sessions_it (void *cls, | ||
393 | const struct GNUNET_HashCode *key, | ||
394 | void *value) | ||
395 | { | ||
396 | struct GNUNET_MESSENGER_ClosureIterateSessions *iterate = cls; | ||
397 | struct GNUNET_MESSENGER_MemberSession *session = value; | ||
398 | |||
399 | return iterate->it (iterate->cls, get_member_session_public_key(session), session); | ||
400 | } | ||
401 | |||
402 | int | ||
403 | iterate_member_sessions (struct GNUNET_MESSENGER_Member *member, | ||
404 | GNUNET_MESSENGER_MemberIteratorCallback it, | ||
405 | void *cls) | ||
406 | { | ||
407 | GNUNET_assert ((member) && (member->sessions) && (it)); | ||
408 | |||
409 | struct GNUNET_MESSENGER_ClosureIterateSessions iterate; | ||
410 | |||
411 | iterate.it = it; | ||
412 | iterate.cls = cls; | ||
413 | |||
414 | return GNUNET_CONTAINER_multihashmap_iterate(member->sessions, iterate_member_sessions_it, &iterate); | ||
415 | } | ||