diff options
Diffstat (limited to 'src/messenger/gnunet-service-messenger_member.c')
-rw-r--r-- | src/messenger/gnunet-service-messenger_member.c | 386 |
1 files changed, 0 insertions, 386 deletions
diff --git a/src/messenger/gnunet-service-messenger_member.c b/src/messenger/gnunet-service-messenger_member.c deleted file mode 100644 index b0a735dbe..000000000 --- a/src/messenger/gnunet-service-messenger_member.c +++ /dev/null | |||
@@ -1,386 +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, const struct GNUNET_ShortHashCode *id) | ||
32 | { | ||
33 | GNUNET_assert (store); | ||
34 | |||
35 | struct GNUNET_MESSENGER_Member *member = GNUNET_new(struct GNUNET_MESSENGER_Member); | ||
36 | |||
37 | member->store = store; | ||
38 | |||
39 | if (id) | ||
40 | GNUNET_memcpy(&(member->id), id, sizeof(member->id)); | ||
41 | else if (GNUNET_YES != generate_free_member_id(&(member->id), store->members)) | ||
42 | { | ||
43 | GNUNET_free (member); | ||
44 | return NULL; | ||
45 | } | ||
46 | |||
47 | member->sessions = GNUNET_CONTAINER_multihashmap_create(2, GNUNET_NO); | ||
48 | |||
49 | return member; | ||
50 | } | ||
51 | |||
52 | static int | ||
53 | iterate_destroy_session (void *cls, const struct GNUNET_HashCode *key, void *value) | ||
54 | { | ||
55 | struct GNUNET_MESSENGER_MemberSession *session = value; | ||
56 | destroy_member_session(session); | ||
57 | return GNUNET_YES; | ||
58 | } | ||
59 | |||
60 | void | ||
61 | destroy_member (struct GNUNET_MESSENGER_Member *member) | ||
62 | { | ||
63 | GNUNET_assert((member) && (member->sessions)); | ||
64 | |||
65 | GNUNET_CONTAINER_multihashmap_iterate (member->sessions, iterate_destroy_session, NULL); | ||
66 | GNUNET_CONTAINER_multihashmap_destroy (member->sessions); | ||
67 | |||
68 | GNUNET_free (member); | ||
69 | } | ||
70 | |||
71 | const struct GNUNET_ShortHashCode* | ||
72 | get_member_id (const struct GNUNET_MESSENGER_Member *member) | ||
73 | { | ||
74 | GNUNET_assert (member); | ||
75 | |||
76 | return &(member->id); | ||
77 | } | ||
78 | |||
79 | static int | ||
80 | callback_scan_for_sessions (void *cls, const char *filename) | ||
81 | { | ||
82 | struct GNUNET_MESSENGER_Member *member = cls; | ||
83 | |||
84 | if (GNUNET_YES == GNUNET_DISK_directory_test (filename, GNUNET_YES)) | ||
85 | { | ||
86 | char *directory; | ||
87 | |||
88 | GNUNET_asprintf (&directory, "%s%c", filename, DIR_SEPARATOR); | ||
89 | |||
90 | load_member_session(member, directory); | ||
91 | GNUNET_free (directory); | ||
92 | } | ||
93 | |||
94 | return GNUNET_OK; | ||
95 | } | ||
96 | |||
97 | void | ||
98 | load_member (struct GNUNET_MESSENGER_MemberStore *store, const char *directory) | ||
99 | { | ||
100 | GNUNET_assert ((store) && (directory)); | ||
101 | |||
102 | char *config_file; | ||
103 | GNUNET_asprintf (&config_file, "%s%s", directory, "member.cfg"); | ||
104 | |||
105 | struct GNUNET_MESSENGER_Member *member = NULL; | ||
106 | |||
107 | if (GNUNET_YES != GNUNET_DISK_file_test (config_file)) | ||
108 | goto free_config; | ||
109 | |||
110 | struct GNUNET_CONFIGURATION_Handle *cfg = GNUNET_CONFIGURATION_create (); | ||
111 | |||
112 | if (GNUNET_OK == GNUNET_CONFIGURATION_parse (cfg, config_file)) | ||
113 | { | ||
114 | struct GNUNET_ShortHashCode id; | ||
115 | |||
116 | if (GNUNET_OK != GNUNET_CONFIGURATION_get_data (cfg, "member", "id", &id, sizeof(id))) | ||
117 | goto destroy_config; | ||
118 | |||
119 | member = add_store_member(store, &id); | ||
120 | } | ||
121 | |||
122 | destroy_config: | ||
123 | |||
124 | GNUNET_CONFIGURATION_destroy (cfg); | ||
125 | |||
126 | free_config: | ||
127 | GNUNET_free(config_file); | ||
128 | |||
129 | if (!member) | ||
130 | return; | ||
131 | |||
132 | char *scan_dir; | ||
133 | GNUNET_asprintf (&scan_dir, "%s%s%c", directory, "sessions", DIR_SEPARATOR); | ||
134 | |||
135 | if (GNUNET_OK == GNUNET_DISK_directory_test (scan_dir, GNUNET_YES)) | ||
136 | GNUNET_DISK_directory_scan (scan_dir, callback_scan_for_sessions, member); | ||
137 | |||
138 | GNUNET_free(scan_dir); | ||
139 | } | ||
140 | |||
141 | static int | ||
142 | iterate_load_next_session (void *cls, const struct GNUNET_HashCode *key, void *value) | ||
143 | { | ||
144 | const char* sessions_directory = cls; | ||
145 | |||
146 | char* load_dir; | ||
147 | GNUNET_asprintf (&load_dir, "%s%s%c", sessions_directory, GNUNET_h2s(key), DIR_SEPARATOR); | ||
148 | |||
149 | struct GNUNET_MESSENGER_MemberSession *session = value; | ||
150 | |||
151 | if (GNUNET_YES == GNUNET_DISK_directory_test (load_dir, GNUNET_YES)) | ||
152 | load_member_session_next (session, load_dir); | ||
153 | |||
154 | GNUNET_free (load_dir); | ||
155 | return GNUNET_YES; | ||
156 | } | ||
157 | |||
158 | void | ||
159 | load_member_next_sessions (const struct GNUNET_MESSENGER_Member *member, const char *directory) | ||
160 | { | ||
161 | GNUNET_assert ((member) && (directory)); | ||
162 | |||
163 | char* load_dir; | ||
164 | GNUNET_asprintf (&load_dir, "%s%s%c", directory, "sessions", DIR_SEPARATOR); | ||
165 | |||
166 | GNUNET_CONTAINER_multihashmap_iterate (member->sessions, iterate_load_next_session, load_dir); | ||
167 | |||
168 | GNUNET_free(load_dir); | ||
169 | } | ||
170 | |||
171 | static int | ||
172 | iterate_save_session (void *cls, const struct GNUNET_HashCode *key, void *value) | ||
173 | { | ||
174 | const char* sessions_directory = cls; | ||
175 | |||
176 | char* save_dir; | ||
177 | GNUNET_asprintf (&save_dir, "%s%s%c", sessions_directory, GNUNET_h2s(key), DIR_SEPARATOR); | ||
178 | |||
179 | struct GNUNET_MESSENGER_MemberSession *session = value; | ||
180 | |||
181 | if ((GNUNET_YES == GNUNET_DISK_directory_test (save_dir, GNUNET_NO)) || | ||
182 | (GNUNET_OK == GNUNET_DISK_directory_create (save_dir))) | ||
183 | save_member_session (session, save_dir); | ||
184 | |||
185 | GNUNET_free (save_dir); | ||
186 | return GNUNET_YES; | ||
187 | } | ||
188 | |||
189 | void | ||
190 | save_member (struct GNUNET_MESSENGER_Member *member, const char *directory) | ||
191 | { | ||
192 | GNUNET_assert ((member) && (directory)); | ||
193 | |||
194 | char *config_file; | ||
195 | GNUNET_asprintf (&config_file, "%s%s", directory, "member.cfg"); | ||
196 | |||
197 | struct GNUNET_CONFIGURATION_Handle *cfg = GNUNET_CONFIGURATION_create (); | ||
198 | |||
199 | char *id_data = GNUNET_STRINGS_data_to_string_alloc (&(member->id), sizeof(member->id)); | ||
200 | |||
201 | if (id_data) | ||
202 | { | ||
203 | GNUNET_CONFIGURATION_set_value_string (cfg, "member", "id", id_data); | ||
204 | |||
205 | GNUNET_free(id_data); | ||
206 | } | ||
207 | |||
208 | GNUNET_CONFIGURATION_write (cfg, config_file); | ||
209 | GNUNET_CONFIGURATION_destroy (cfg); | ||
210 | |||
211 | GNUNET_free(config_file); | ||
212 | |||
213 | char* save_dir; | ||
214 | GNUNET_asprintf (&save_dir, "%s%s%c", directory, "sessions", DIR_SEPARATOR); | ||
215 | |||
216 | if ((GNUNET_YES == GNUNET_DISK_directory_test (save_dir, GNUNET_NO)) || | ||
217 | (GNUNET_OK == GNUNET_DISK_directory_create (save_dir))) | ||
218 | GNUNET_CONTAINER_multihashmap_iterate (member->sessions, iterate_save_session, save_dir); | ||
219 | |||
220 | GNUNET_free(save_dir); | ||
221 | } | ||
222 | |||
223 | static void | ||
224 | sync_session_contact_from_next (struct GNUNET_MESSENGER_MemberSession *session, struct GNUNET_MESSENGER_MemberSession *next) | ||
225 | { | ||
226 | GNUNET_assert((session) && (next)); | ||
227 | |||
228 | if (session == next) | ||
229 | return; | ||
230 | |||
231 | if (next->next) | ||
232 | sync_session_contact_from_next (session, next->next); | ||
233 | else | ||
234 | session->contact = next->contact; | ||
235 | } | ||
236 | |||
237 | static int | ||
238 | iterate_sync_session_contact (void *cls, const struct GNUNET_HashCode *key, void *value) | ||
239 | { | ||
240 | struct GNUNET_MESSENGER_MemberSession *session = value; | ||
241 | |||
242 | if (session->next) | ||
243 | sync_session_contact_from_next (session, session->next); | ||
244 | |||
245 | return GNUNET_YES; | ||
246 | } | ||
247 | |||
248 | void | ||
249 | sync_member_contacts (struct GNUNET_MESSENGER_Member *member) | ||
250 | { | ||
251 | GNUNET_assert ((member) && (member->sessions)); | ||
252 | |||
253 | GNUNET_CONTAINER_multihashmap_iterate (member->sessions, iterate_sync_session_contact, NULL); | ||
254 | } | ||
255 | |||
256 | struct GNUNET_MESSENGER_MemberSession* | ||
257 | get_member_session (const struct GNUNET_MESSENGER_Member *member, const struct GNUNET_IDENTITY_PublicKey *public_key) | ||
258 | { | ||
259 | GNUNET_assert ((member) && (public_key)); | ||
260 | |||
261 | struct GNUNET_HashCode hash; | ||
262 | GNUNET_CRYPTO_hash(public_key, sizeof(*public_key), &hash); | ||
263 | |||
264 | return GNUNET_CONTAINER_multihashmap_get(member->sessions, &hash); | ||
265 | } | ||
266 | |||
267 | struct GNUNET_MESSENGER_ClosureSearchSession { | ||
268 | const struct GNUNET_MESSENGER_Message *message; | ||
269 | const struct GNUNET_HashCode *hash; | ||
270 | |||
271 | struct GNUNET_MESSENGER_MemberSession *match; | ||
272 | }; | ||
273 | |||
274 | static int | ||
275 | iterate_search_session (void *cls, const struct GNUNET_HashCode *key, void *value) | ||
276 | { | ||
277 | struct GNUNET_MESSENGER_ClosureSearchSession* search = cls; | ||
278 | struct GNUNET_MESSENGER_MemberSession *session = value; | ||
279 | |||
280 | if (GNUNET_OK != verify_member_session_as_sender(session, search->message, search->hash)) | ||
281 | return GNUNET_YES; | ||
282 | |||
283 | search->match = session; | ||
284 | return GNUNET_NO; | ||
285 | } | ||
286 | |||
287 | static struct GNUNET_MESSENGER_MemberSession* | ||
288 | try_member_session (struct GNUNET_MESSENGER_Member *member, const struct GNUNET_IDENTITY_PublicKey *public_key) | ||
289 | { | ||
290 | struct GNUNET_MESSENGER_MemberSession* session = get_member_session(member, public_key); | ||
291 | |||
292 | if (session) | ||
293 | return session; | ||
294 | |||
295 | session = create_member_session(member, public_key); | ||
296 | |||
297 | if (session) | ||
298 | add_member_session(member, session); | ||
299 | |||
300 | return session; | ||
301 | } | ||
302 | |||
303 | struct GNUNET_MESSENGER_MemberSession* | ||
304 | get_member_session_of (struct GNUNET_MESSENGER_Member *member, const struct GNUNET_MESSENGER_Message *message, | ||
305 | const struct GNUNET_HashCode *hash) | ||
306 | { | ||
307 | GNUNET_assert ((member) && (message) && (hash) && | ||
308 | (0 == GNUNET_memcmp(&(member->id), &(message->header.sender_id)))); | ||
309 | |||
310 | if (GNUNET_MESSENGER_KIND_INFO == message->header.kind) | ||
311 | return try_member_session(member, &(message->body.info.host_key)); | ||
312 | else if (GNUNET_MESSENGER_KIND_JOIN == message->header.kind) | ||
313 | return try_member_session(member, &(message->body.join.key)); | ||
314 | |||
315 | struct GNUNET_MESSENGER_ClosureSearchSession search; | ||
316 | |||
317 | search.message = message; | ||
318 | search.hash = hash; | ||
319 | |||
320 | search.match = NULL; | ||
321 | GNUNET_CONTAINER_multihashmap_iterate(member->sessions, iterate_search_session, &search); | ||
322 | |||
323 | return search.match; | ||
324 | } | ||
325 | |||
326 | void | ||
327 | add_member_session (struct GNUNET_MESSENGER_Member *member, struct GNUNET_MESSENGER_MemberSession *session) | ||
328 | { | ||
329 | if (!session) | ||
330 | return; | ||
331 | |||
332 | GNUNET_assert((member) && (session->member == member)); | ||
333 | |||
334 | const struct GNUNET_IDENTITY_PublicKey *public_key = get_member_session_public_key(session); | ||
335 | |||
336 | struct GNUNET_HashCode hash; | ||
337 | GNUNET_CRYPTO_hash(public_key, sizeof(*public_key), &hash); | ||
338 | |||
339 | if (GNUNET_OK != GNUNET_CONTAINER_multihashmap_put( | ||
340 | member->sessions, &hash, session, | ||
341 | GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST)) | ||
342 | GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Adding a member session failed: %s\n", | ||
343 | GNUNET_h2s(&hash)); | ||
344 | } | ||
345 | |||
346 | void | ||
347 | remove_member_session (struct GNUNET_MESSENGER_Member *member, struct GNUNET_MESSENGER_MemberSession *session) | ||
348 | { | ||
349 | GNUNET_assert ((member) && (session) && (session->member == member)); | ||
350 | |||
351 | const struct GNUNET_IDENTITY_PublicKey *public_key = get_member_session_public_key(session); | ||
352 | |||
353 | struct GNUNET_HashCode hash; | ||
354 | GNUNET_CRYPTO_hash(public_key, sizeof(*public_key), &hash); | ||
355 | |||
356 | if (GNUNET_YES != GNUNET_CONTAINER_multihashmap_remove(member->sessions, &hash, session)) | ||
357 | GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Removing a member session failed: %s\n", | ||
358 | GNUNET_h2s(&hash)); | ||
359 | } | ||
360 | |||
361 | struct GNUNET_MESSENGER_ClosureIterateSessions { | ||
362 | GNUNET_MESSENGER_MemberIteratorCallback it; | ||
363 | void *cls; | ||
364 | }; | ||
365 | |||
366 | static int | ||
367 | iterate_member_sessions_it (void *cls, const struct GNUNET_HashCode *key, void *value) | ||
368 | { | ||
369 | struct GNUNET_MESSENGER_ClosureIterateSessions *iterate = cls; | ||
370 | struct GNUNET_MESSENGER_MemberSession *session = value; | ||
371 | |||
372 | return iterate->it (iterate->cls, get_member_session_public_key(session), session); | ||
373 | } | ||
374 | |||
375 | int | ||
376 | iterate_member_sessions (struct GNUNET_MESSENGER_Member *member, GNUNET_MESSENGER_MemberIteratorCallback it, void *cls) | ||
377 | { | ||
378 | GNUNET_assert ((member) && (member->sessions) && (it)); | ||
379 | |||
380 | struct GNUNET_MESSENGER_ClosureIterateSessions iterate; | ||
381 | |||
382 | iterate.it = it; | ||
383 | iterate.cls = cls; | ||
384 | |||
385 | return GNUNET_CONTAINER_multihashmap_iterate(member->sessions, iterate_member_sessions_it, &iterate); | ||
386 | } | ||