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992c052c LP |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2013 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
adacb957 LP |
22 | #include <sys/capability.h> |
23 | ||
992c052c LP |
24 | #include "strv.h" |
25 | #include "set.h" | |
26 | #include "bus-internal.h" | |
27 | #include "bus-message.h" | |
28 | #include "bus-type.h" | |
29 | #include "bus-signature.h" | |
30 | #include "bus-introspect.h" | |
31 | #include "bus-objects.h" | |
40ca29a1 | 32 | #include "bus-util.h" |
992c052c LP |
33 | |
34 | static int node_vtable_get_userdata( | |
35 | sd_bus *bus, | |
36 | const char *path, | |
37 | struct node_vtable *c, | |
f00c3121 LP |
38 | void **userdata, |
39 | sd_bus_error *error) { | |
992c052c LP |
40 | |
41 | void *u; | |
42 | int r; | |
43 | ||
44 | assert(bus); | |
45 | assert(path); | |
46 | assert(c); | |
47 | ||
48 | u = c->userdata; | |
49 | if (c->find) { | |
f00c3121 LP |
50 | r = c->find(bus, path, c->interface, u, &u, error); |
51 | if (r < 0) | |
52 | return r; | |
53 | if (sd_bus_error_is_set(error)) | |
5958d089 | 54 | return -sd_bus_error_get_errno(error); |
f00c3121 | 55 | if (r == 0) |
992c052c LP |
56 | return r; |
57 | } | |
58 | ||
59 | if (userdata) | |
60 | *userdata = u; | |
61 | ||
62 | return 1; | |
63 | } | |
64 | ||
65 | static void *vtable_property_convert_userdata(const sd_bus_vtable *p, void *u) { | |
66 | assert(p); | |
67 | ||
77a874a3 | 68 | return (uint8_t*) u + p->x.property.offset; |
992c052c LP |
69 | } |
70 | ||
71 | static int vtable_property_get_userdata( | |
72 | sd_bus *bus, | |
73 | const char *path, | |
74 | struct vtable_member *p, | |
f00c3121 LP |
75 | void **userdata, |
76 | sd_bus_error *error) { | |
992c052c LP |
77 | |
78 | void *u; | |
79 | int r; | |
80 | ||
81 | assert(bus); | |
82 | assert(path); | |
83 | assert(p); | |
84 | assert(userdata); | |
85 | ||
f00c3121 | 86 | r = node_vtable_get_userdata(bus, path, p->parent, &u, error); |
992c052c LP |
87 | if (r <= 0) |
88 | return r; | |
68313d3d LP |
89 | if (bus->nodes_modified) |
90 | return 0; | |
992c052c LP |
91 | |
92 | *userdata = vtable_property_convert_userdata(p->vtable, u); | |
93 | return 1; | |
94 | } | |
95 | ||
dfa92725 LP |
96 | static int add_enumerated_to_set( |
97 | sd_bus *bus, | |
98 | const char *prefix, | |
99 | struct node_enumerator *first, | |
f00c3121 LP |
100 | Set *s, |
101 | sd_bus_error *error) { | |
dfa92725 | 102 | |
992c052c LP |
103 | struct node_enumerator *c; |
104 | int r; | |
105 | ||
106 | assert(bus); | |
107 | assert(prefix); | |
108 | assert(s); | |
109 | ||
110 | LIST_FOREACH(enumerators, c, first) { | |
111 | char **children = NULL, **k; | |
112 | ||
68313d3d LP |
113 | if (bus->nodes_modified) |
114 | return 0; | |
115 | ||
f00c3121 | 116 | r = c->callback(bus, prefix, c->userdata, &children, error); |
992c052c LP |
117 | if (r < 0) |
118 | return r; | |
f00c3121 | 119 | if (sd_bus_error_is_set(error)) |
5958d089 | 120 | return -sd_bus_error_get_errno(error); |
992c052c LP |
121 | |
122 | STRV_FOREACH(k, children) { | |
123 | if (r < 0) { | |
124 | free(*k); | |
125 | continue; | |
126 | } | |
127 | ||
5d66866d | 128 | if (!object_path_is_valid(*k)){ |
992c052c LP |
129 | free(*k); |
130 | r = -EINVAL; | |
131 | continue; | |
132 | } | |
133 | ||
5d66866d LP |
134 | if (!object_path_startswith(*k, prefix)) { |
135 | free(*k); | |
136 | continue; | |
137 | } | |
138 | ||
992c052c | 139 | r = set_consume(s, *k); |
52c7f2b2 LP |
140 | if (r == -EEXIST) |
141 | r = 0; | |
992c052c LP |
142 | } |
143 | ||
144 | free(children); | |
145 | if (r < 0) | |
146 | return r; | |
147 | } | |
148 | ||
149 | return 0; | |
150 | } | |
151 | ||
dfa92725 LP |
152 | static int add_subtree_to_set( |
153 | sd_bus *bus, | |
154 | const char *prefix, | |
155 | struct node *n, | |
f00c3121 LP |
156 | Set *s, |
157 | sd_bus_error *error) { | |
dfa92725 | 158 | |
992c052c LP |
159 | struct node *i; |
160 | int r; | |
161 | ||
162 | assert(bus); | |
163 | assert(prefix); | |
164 | assert(n); | |
165 | assert(s); | |
166 | ||
f00c3121 | 167 | r = add_enumerated_to_set(bus, prefix, n->enumerators, s, error); |
992c052c LP |
168 | if (r < 0) |
169 | return r; | |
68313d3d LP |
170 | if (bus->nodes_modified) |
171 | return 0; | |
992c052c LP |
172 | |
173 | LIST_FOREACH(siblings, i, n->child) { | |
174 | char *t; | |
175 | ||
5d66866d LP |
176 | if (!object_path_startswith(i->path, prefix)) |
177 | continue; | |
178 | ||
992c052c LP |
179 | t = strdup(i->path); |
180 | if (!t) | |
181 | return -ENOMEM; | |
182 | ||
183 | r = set_consume(s, t); | |
184 | if (r < 0 && r != -EEXIST) | |
185 | return r; | |
186 | ||
f00c3121 | 187 | r = add_subtree_to_set(bus, prefix, i, s, error); |
992c052c LP |
188 | if (r < 0) |
189 | return r; | |
68313d3d LP |
190 | if (bus->nodes_modified) |
191 | return 0; | |
992c052c LP |
192 | } |
193 | ||
194 | return 0; | |
195 | } | |
196 | ||
dfa92725 LP |
197 | static int get_child_nodes( |
198 | sd_bus *bus, | |
199 | const char *prefix, | |
200 | struct node *n, | |
f00c3121 LP |
201 | Set **_s, |
202 | sd_bus_error *error) { | |
dfa92725 | 203 | |
992c052c LP |
204 | Set *s = NULL; |
205 | int r; | |
206 | ||
207 | assert(bus); | |
dfa92725 | 208 | assert(prefix); |
992c052c LP |
209 | assert(n); |
210 | assert(_s); | |
211 | ||
212 | s = set_new(string_hash_func, string_compare_func); | |
213 | if (!s) | |
214 | return -ENOMEM; | |
215 | ||
f00c3121 | 216 | r = add_subtree_to_set(bus, prefix, n, s, error); |
992c052c LP |
217 | if (r < 0) { |
218 | set_free_free(s); | |
219 | return r; | |
220 | } | |
221 | ||
222 | *_s = s; | |
223 | return 0; | |
224 | } | |
225 | ||
226 | static int node_callbacks_run( | |
227 | sd_bus *bus, | |
228 | sd_bus_message *m, | |
229 | struct node_callback *first, | |
230 | bool require_fallback, | |
231 | bool *found_object) { | |
232 | ||
233 | struct node_callback *c; | |
234 | int r; | |
235 | ||
236 | assert(bus); | |
237 | assert(m); | |
238 | assert(found_object); | |
239 | ||
240 | LIST_FOREACH(callbacks, c, first) { | |
ebcf1f97 LP |
241 | _cleanup_bus_error_free_ sd_bus_error error_buffer = SD_BUS_ERROR_NULL; |
242 | ||
68313d3d LP |
243 | if (bus->nodes_modified) |
244 | return 0; | |
245 | ||
992c052c LP |
246 | if (require_fallback && !c->is_fallback) |
247 | continue; | |
248 | ||
249 | *found_object = true; | |
250 | ||
251 | if (c->last_iteration == bus->iteration_counter) | |
252 | continue; | |
253 | ||
68313d3d LP |
254 | c->last_iteration = bus->iteration_counter; |
255 | ||
992c052c LP |
256 | r = sd_bus_message_rewind(m, true); |
257 | if (r < 0) | |
258 | return r; | |
259 | ||
ebcf1f97 LP |
260 | r = c->callback(bus, m, c->userdata, &error_buffer); |
261 | r = bus_maybe_reply_error(m, r, &error_buffer); | |
992c052c LP |
262 | if (r != 0) |
263 | return r; | |
264 | } | |
265 | ||
266 | return 0; | |
267 | } | |
268 | ||
adacb957 LP |
269 | #define CAPABILITY_SHIFT(x) (((x) >> __builtin_ctzll(_SD_BUS_VTABLE_CAPABILITY_MASK)) & 0xFFFF) |
270 | ||
271 | static int check_access(sd_bus *bus, sd_bus_message *m, struct vtable_member *c, sd_bus_error *error) { | |
272 | _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL; | |
273 | uint64_t cap; | |
274 | uid_t uid; | |
275 | int r; | |
276 | ||
277 | assert(bus); | |
278 | assert(m); | |
279 | assert(c); | |
280 | ||
281 | /* If the entire bus is trusted let's grant access */ | |
282 | if (bus->trusted) | |
283 | return 0; | |
284 | ||
285 | /* If the member is marked UNPRIVILEGED let's grant access */ | |
286 | if (c->vtable->flags & SD_BUS_VTABLE_UNPRIVILEGED) | |
287 | return 0; | |
288 | ||
289 | /* If we are not connected to kdbus we cannot retrieve the | |
290 | * effective capability set without race. Since we need this | |
291 | * for a security decision we cannot use racy data, hence | |
292 | * don't request it. */ | |
293 | if (bus->is_kernel) | |
294 | r = sd_bus_query_sender_creds(m, SD_BUS_CREDS_UID|SD_BUS_CREDS_EFFECTIVE_CAPS, &creds); | |
295 | else | |
296 | r = sd_bus_query_sender_creds(m, SD_BUS_CREDS_UID, &creds); | |
297 | if (r < 0) | |
298 | return r; | |
299 | ||
300 | /* Check have the caller has the requested capability | |
301 | * set. Note that the flags value contains the capability | |
302 | * number plus one, which we need to subtract here. We do this | |
303 | * so that we have 0 as special value for "default | |
304 | * capability". */ | |
305 | cap = CAPABILITY_SHIFT(c->vtable->flags); | |
306 | if (cap == 0) | |
307 | cap = CAPABILITY_SHIFT(c->parent->vtable[0].flags); | |
308 | if (cap == 0) | |
309 | cap = CAP_SYS_ADMIN; | |
310 | else | |
311 | cap --; | |
312 | ||
313 | r = sd_bus_creds_has_effective_cap(creds, cap); | |
314 | if (r > 0) | |
315 | return 1; | |
316 | ||
317 | /* Caller has same UID as us, then let's grant access */ | |
318 | r = sd_bus_creds_get_uid(creds, &uid); | |
319 | if (r >= 0) { | |
320 | if (uid == getuid()) | |
321 | return 1; | |
322 | } | |
323 | ||
324 | return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Access to %s.%s() not permitted.", c->interface, c->member); | |
325 | } | |
326 | ||
992c052c LP |
327 | static int method_callbacks_run( |
328 | sd_bus *bus, | |
329 | sd_bus_message *m, | |
330 | struct vtable_member *c, | |
331 | bool require_fallback, | |
332 | bool *found_object) { | |
333 | ||
f00c3121 | 334 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
992c052c LP |
335 | const char *signature; |
336 | void *u; | |
337 | int r; | |
338 | ||
339 | assert(bus); | |
340 | assert(m); | |
341 | assert(c); | |
342 | assert(found_object); | |
343 | ||
344 | if (require_fallback && !c->parent->is_fallback) | |
345 | return 0; | |
346 | ||
adacb957 LP |
347 | r = check_access(bus, m, c, &error); |
348 | if (r < 0) | |
349 | return bus_maybe_reply_error(m, r, &error); | |
350 | ||
f00c3121 | 351 | r = node_vtable_get_userdata(bus, m->path, c->parent, &u, &error); |
992c052c | 352 | if (r <= 0) |
f00c3121 | 353 | return bus_maybe_reply_error(m, r, &error); |
68313d3d LP |
354 | if (bus->nodes_modified) |
355 | return 0; | |
992c052c LP |
356 | |
357 | *found_object = true; | |
358 | ||
68313d3d LP |
359 | if (c->last_iteration == bus->iteration_counter) |
360 | return 0; | |
361 | ||
362 | c->last_iteration = bus->iteration_counter; | |
363 | ||
992c052c LP |
364 | r = sd_bus_message_rewind(m, true); |
365 | if (r < 0) | |
366 | return r; | |
367 | ||
40ca29a1 LP |
368 | signature = sd_bus_message_get_signature(m, true); |
369 | if (!signature) | |
370 | return -EINVAL; | |
992c052c | 371 | |
f00c3121 | 372 | if (!streq(strempty(c->vtable->x.method.signature), signature)) |
86b8d289 LP |
373 | return sd_bus_reply_method_errorf( |
374 | m, | |
375 | SD_BUS_ERROR_INVALID_ARGS, | |
376 | "Invalid arguments '%s' to call %s.%s(), expecting '%s'.", | |
377 | signature, c->interface, c->member, strempty(c->vtable->x.method.signature)); | |
992c052c | 378 | |
6717d473 LP |
379 | /* Keep track what the signature of the reply to this message |
380 | * should be, so that this can be enforced when sealing the | |
381 | * reply. */ | |
382 | m->enforced_reply_signature = strempty(c->vtable->x.method.result); | |
383 | ||
ebcf1f97 | 384 | if (c->vtable->x.method.handler) { |
f00c3121 LP |
385 | r = c->vtable->x.method.handler(bus, m, u, &error); |
386 | return bus_maybe_reply_error(m, r, &error); | |
ebcf1f97 | 387 | } |
992c052c LP |
388 | |
389 | /* If the method callback is NULL, make this a successful NOP */ | |
df2d202e | 390 | r = sd_bus_reply_method_return(m, NULL); |
992c052c LP |
391 | if (r < 0) |
392 | return r; | |
393 | ||
394 | return 1; | |
395 | } | |
396 | ||
397 | static int invoke_property_get( | |
398 | sd_bus *bus, | |
399 | const sd_bus_vtable *v, | |
400 | const char *path, | |
401 | const char *interface, | |
402 | const char *property, | |
ebcf1f97 LP |
403 | sd_bus_message *reply, |
404 | void *userdata, | |
405 | sd_bus_error *error) { | |
992c052c | 406 | |
af8601fa | 407 | const void *p; |
f00c3121 | 408 | int r; |
992c052c LP |
409 | |
410 | assert(bus); | |
411 | assert(v); | |
dfa92725 LP |
412 | assert(path); |
413 | assert(interface); | |
414 | assert(property); | |
ebcf1f97 | 415 | assert(reply); |
992c052c | 416 | |
f00c3121 LP |
417 | if (v->x.property.get) { |
418 | r = v->x.property.get(bus, path, interface, property, reply, userdata, error); | |
419 | if (r < 0) | |
420 | return r; | |
421 | if (sd_bus_error_is_set(error)) | |
5958d089 | 422 | return -sd_bus_error_get_errno(error); |
f00c3121 LP |
423 | return r; |
424 | } | |
992c052c LP |
425 | |
426 | /* Automatic handling if no callback is defined. */ | |
427 | ||
c13c7de3 | 428 | if (streq(v->x.property.signature, "as")) |
ebcf1f97 | 429 | return sd_bus_message_append_strv(reply, *(char***) userdata); |
c13c7de3 | 430 | |
77a874a3 LP |
431 | assert(signature_is_single(v->x.property.signature, false)); |
432 | assert(bus_type_is_basic(v->x.property.signature[0])); | |
992c052c | 433 | |
77a874a3 | 434 | switch (v->x.property.signature[0]) { |
992c052c LP |
435 | |
436 | case SD_BUS_TYPE_STRING: | |
28d6633a LP |
437 | case SD_BUS_TYPE_SIGNATURE: |
438 | p = strempty(*(char**) userdata); | |
af8601fa KS |
439 | break; |
440 | ||
992c052c | 441 | case SD_BUS_TYPE_OBJECT_PATH: |
992c052c | 442 | p = *(char**) userdata; |
28d6633a | 443 | assert(p); |
992c052c LP |
444 | break; |
445 | ||
446 | default: | |
447 | p = userdata; | |
448 | break; | |
449 | } | |
450 | ||
ebcf1f97 | 451 | return sd_bus_message_append_basic(reply, v->x.property.signature[0], p); |
992c052c LP |
452 | } |
453 | ||
454 | static int invoke_property_set( | |
455 | sd_bus *bus, | |
456 | const sd_bus_vtable *v, | |
457 | const char *path, | |
458 | const char *interface, | |
459 | const char *property, | |
460 | sd_bus_message *value, | |
ebcf1f97 LP |
461 | void *userdata, |
462 | sd_bus_error *error) { | |
992c052c LP |
463 | |
464 | int r; | |
465 | ||
466 | assert(bus); | |
467 | assert(v); | |
dfa92725 LP |
468 | assert(path); |
469 | assert(interface); | |
470 | assert(property); | |
471 | assert(value); | |
992c052c | 472 | |
f00c3121 LP |
473 | if (v->x.property.set) { |
474 | r = v->x.property.set(bus, path, interface, property, value, userdata, error); | |
475 | if (r < 0) | |
476 | return r; | |
477 | if (sd_bus_error_is_set(error)) | |
5958d089 | 478 | return -sd_bus_error_get_errno(error); |
f00c3121 LP |
479 | return r; |
480 | } | |
992c052c LP |
481 | |
482 | /* Automatic handling if no callback is defined. */ | |
483 | ||
77a874a3 LP |
484 | assert(signature_is_single(v->x.property.signature, false)); |
485 | assert(bus_type_is_basic(v->x.property.signature[0])); | |
992c052c | 486 | |
77a874a3 | 487 | switch (v->x.property.signature[0]) { |
992c052c LP |
488 | |
489 | case SD_BUS_TYPE_STRING: | |
490 | case SD_BUS_TYPE_OBJECT_PATH: | |
491 | case SD_BUS_TYPE_SIGNATURE: { | |
492 | const char *p; | |
493 | char *n; | |
494 | ||
77a874a3 | 495 | r = sd_bus_message_read_basic(value, v->x.property.signature[0], &p); |
992c052c LP |
496 | if (r < 0) |
497 | return r; | |
498 | ||
499 | n = strdup(p); | |
500 | if (!n) | |
501 | return -ENOMEM; | |
502 | ||
503 | free(*(char**) userdata); | |
504 | *(char**) userdata = n; | |
505 | ||
506 | break; | |
507 | } | |
508 | ||
509 | default: | |
77a874a3 | 510 | r = sd_bus_message_read_basic(value, v->x.property.signature[0], userdata); |
992c052c LP |
511 | if (r < 0) |
512 | return r; | |
513 | ||
514 | break; | |
515 | } | |
516 | ||
517 | return 1; | |
518 | } | |
519 | ||
520 | static int property_get_set_callbacks_run( | |
521 | sd_bus *bus, | |
522 | sd_bus_message *m, | |
523 | struct vtable_member *c, | |
524 | bool require_fallback, | |
525 | bool is_get, | |
526 | bool *found_object) { | |
527 | ||
992c052c | 528 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
ebcf1f97 | 529 | _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; |
992c052c LP |
530 | void *u; |
531 | int r; | |
532 | ||
533 | assert(bus); | |
534 | assert(m); | |
dfa92725 | 535 | assert(c); |
992c052c LP |
536 | assert(found_object); |
537 | ||
538 | if (require_fallback && !c->parent->is_fallback) | |
539 | return 0; | |
540 | ||
f00c3121 | 541 | r = vtable_property_get_userdata(bus, m->path, c, &u, &error); |
992c052c | 542 | if (r <= 0) |
f00c3121 | 543 | return bus_maybe_reply_error(m, r, &error); |
68313d3d LP |
544 | if (bus->nodes_modified) |
545 | return 0; | |
992c052c LP |
546 | |
547 | *found_object = true; | |
548 | ||
df2d202e | 549 | r = sd_bus_message_new_method_return(m, &reply); |
992c052c LP |
550 | if (r < 0) |
551 | return r; | |
552 | ||
992c052c | 553 | if (is_get) { |
68313d3d LP |
554 | /* Note that we do not protect against reexecution |
555 | * here (using the last_iteration check, see below), | |
556 | * should the node tree have changed and we got called | |
557 | * again. We assume that property Get() calls are | |
558 | * ultimately without side-effects or if they aren't | |
559 | * then at least idempotent. */ | |
560 | ||
77a874a3 | 561 | r = sd_bus_message_open_container(reply, 'v', c->vtable->x.property.signature); |
992c052c LP |
562 | if (r < 0) |
563 | return r; | |
564 | ||
adacb957 LP |
565 | /* Note that we do not do an access check here. Read |
566 | * access to properties is always unrestricted, since | |
567 | * PropertiesChanged signals broadcast contents | |
568 | * anyway. */ | |
569 | ||
ebcf1f97 | 570 | r = invoke_property_get(bus, c->vtable, m->path, c->interface, c->member, reply, u, &error); |
992c052c | 571 | if (r < 0) |
f00c3121 | 572 | return bus_maybe_reply_error(m, r, &error); |
992c052c | 573 | |
68313d3d LP |
574 | if (bus->nodes_modified) |
575 | return 0; | |
576 | ||
992c052c LP |
577 | r = sd_bus_message_close_container(reply); |
578 | if (r < 0) | |
579 | return r; | |
580 | ||
581 | } else { | |
582 | if (c->vtable->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY) | |
ebcf1f97 | 583 | return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_PROPERTY_READ_ONLY, "Property '%s' is not writable.", c->member); |
68313d3d | 584 | |
ebcf1f97 LP |
585 | /* Avoid that we call the set routine more than once |
586 | * if the processing of this message got restarted | |
587 | * because the node tree changed. */ | |
588 | if (c->last_iteration == bus->iteration_counter) | |
589 | return 0; | |
992c052c | 590 | |
ebcf1f97 | 591 | c->last_iteration = bus->iteration_counter; |
992c052c | 592 | |
ebcf1f97 LP |
593 | r = sd_bus_message_enter_container(m, 'v', c->vtable->x.property.signature); |
594 | if (r < 0) | |
595 | return r; | |
992c052c | 596 | |
adacb957 LP |
597 | r = check_access(bus, m, c, &error); |
598 | if (r < 0) | |
599 | return bus_maybe_reply_error(m, r, &error); | |
600 | ||
ebcf1f97 LP |
601 | r = invoke_property_set(bus, c->vtable, m->path, c->interface, c->member, m, u, &error); |
602 | if (r < 0) | |
f00c3121 | 603 | return bus_maybe_reply_error(m, r, &error); |
992c052c | 604 | |
68313d3d LP |
605 | if (bus->nodes_modified) |
606 | return 0; | |
607 | ||
992c052c LP |
608 | r = sd_bus_message_exit_container(m); |
609 | if (r < 0) | |
610 | return r; | |
611 | } | |
612 | ||
613 | r = sd_bus_send(bus, reply, NULL); | |
614 | if (r < 0) | |
615 | return r; | |
616 | ||
617 | return 1; | |
618 | } | |
619 | ||
620 | static int vtable_append_all_properties( | |
621 | sd_bus *bus, | |
622 | sd_bus_message *reply, | |
623 | const char *path, | |
624 | struct node_vtable *c, | |
625 | void *userdata, | |
626 | sd_bus_error *error) { | |
627 | ||
628 | const sd_bus_vtable *v; | |
629 | int r; | |
630 | ||
631 | assert(bus); | |
632 | assert(reply); | |
dfa92725 | 633 | assert(path); |
992c052c LP |
634 | assert(c); |
635 | ||
6e8df5f0 LP |
636 | if (c->vtable[0].flags & SD_BUS_VTABLE_HIDDEN) |
637 | return 1; | |
638 | ||
992c052c LP |
639 | for (v = c->vtable+1; v->type != _SD_BUS_VTABLE_END; v++) { |
640 | if (v->type != _SD_BUS_VTABLE_PROPERTY && v->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY) | |
641 | continue; | |
642 | ||
6e8df5f0 LP |
643 | if (v->flags & SD_BUS_VTABLE_HIDDEN) |
644 | continue; | |
645 | ||
992c052c LP |
646 | r = sd_bus_message_open_container(reply, 'e', "sv"); |
647 | if (r < 0) | |
648 | return r; | |
649 | ||
8e4e652b | 650 | r = sd_bus_message_append(reply, "s", v->x.property.member); |
992c052c LP |
651 | if (r < 0) |
652 | return r; | |
653 | ||
77a874a3 | 654 | r = sd_bus_message_open_container(reply, 'v', v->x.property.signature); |
992c052c LP |
655 | if (r < 0) |
656 | return r; | |
657 | ||
ebcf1f97 | 658 | r = invoke_property_get(bus, v, path, c->interface, v->x.property.member, reply, vtable_property_convert_userdata(v, userdata), error); |
f00c3121 LP |
659 | if (r < 0) |
660 | return r; | |
68313d3d LP |
661 | if (bus->nodes_modified) |
662 | return 0; | |
992c052c LP |
663 | |
664 | r = sd_bus_message_close_container(reply); | |
665 | if (r < 0) | |
666 | return r; | |
667 | ||
668 | r = sd_bus_message_close_container(reply); | |
669 | if (r < 0) | |
670 | return r; | |
671 | } | |
672 | ||
673 | return 1; | |
674 | } | |
675 | ||
676 | static int property_get_all_callbacks_run( | |
677 | sd_bus *bus, | |
678 | sd_bus_message *m, | |
679 | struct node_vtable *first, | |
680 | bool require_fallback, | |
681 | const char *iface, | |
682 | bool *found_object) { | |
683 | ||
684 | _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; | |
685 | struct node_vtable *c; | |
bd037038 | 686 | bool found_interface; |
992c052c LP |
687 | int r; |
688 | ||
689 | assert(bus); | |
690 | assert(m); | |
691 | assert(found_object); | |
692 | ||
df2d202e | 693 | r = sd_bus_message_new_method_return(m, &reply); |
992c052c LP |
694 | if (r < 0) |
695 | return r; | |
696 | ||
697 | r = sd_bus_message_open_container(reply, 'a', "{sv}"); | |
698 | if (r < 0) | |
699 | return r; | |
700 | ||
38911893 | 701 | found_interface = !iface || |
bd037038 LP |
702 | streq(iface, "org.freedesktop.DBus.Properties") || |
703 | streq(iface, "org.freedesktop.DBus.Peer") || | |
704 | streq(iface, "org.freedesktop.DBus.Introspectable"); | |
705 | ||
992c052c LP |
706 | LIST_FOREACH(vtables, c, first) { |
707 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; | |
708 | void *u; | |
709 | ||
710 | if (require_fallback && !c->is_fallback) | |
711 | continue; | |
712 | ||
f00c3121 | 713 | r = node_vtable_get_userdata(bus, m->path, c, &u, &error); |
992c052c | 714 | if (r < 0) |
f00c3121 | 715 | return bus_maybe_reply_error(m, r, &error); |
68313d3d LP |
716 | if (bus->nodes_modified) |
717 | return 0; | |
992c052c LP |
718 | if (r == 0) |
719 | continue; | |
720 | ||
721 | *found_object = true; | |
722 | ||
723 | if (iface && !streq(c->interface, iface)) | |
724 | continue; | |
725 | found_interface = true; | |
726 | ||
992c052c LP |
727 | r = vtable_append_all_properties(bus, reply, m->path, c, u, &error); |
728 | if (r < 0) | |
f00c3121 | 729 | return bus_maybe_reply_error(m, r, &error); |
68313d3d LP |
730 | if (bus->nodes_modified) |
731 | return 0; | |
992c052c LP |
732 | } |
733 | ||
734 | if (!found_interface) { | |
735 | r = sd_bus_reply_method_errorf( | |
df2d202e | 736 | m, |
40ca29a1 | 737 | SD_BUS_ERROR_UNKNOWN_INTERFACE, |
992c052c LP |
738 | "Unknown interface '%s'.", iface); |
739 | if (r < 0) | |
740 | return r; | |
741 | ||
742 | return 1; | |
743 | } | |
744 | ||
745 | r = sd_bus_message_close_container(reply); | |
746 | if (r < 0) | |
747 | return r; | |
748 | ||
749 | r = sd_bus_send(bus, reply, NULL); | |
750 | if (r < 0) | |
751 | return r; | |
752 | ||
753 | return 1; | |
754 | } | |
755 | ||
756 | static bool bus_node_with_object_manager(sd_bus *bus, struct node *n) { | |
757 | assert(bus); | |
dfa92725 | 758 | assert(n); |
992c052c LP |
759 | |
760 | if (n->object_manager) | |
761 | return true; | |
762 | ||
763 | if (n->parent) | |
764 | return bus_node_with_object_manager(bus, n->parent); | |
765 | ||
766 | return false; | |
767 | } | |
768 | ||
dfa92725 LP |
769 | static bool bus_node_exists( |
770 | sd_bus *bus, | |
771 | struct node *n, | |
772 | const char *path, | |
773 | bool require_fallback) { | |
774 | ||
992c052c LP |
775 | struct node_vtable *c; |
776 | struct node_callback *k; | |
777 | ||
778 | assert(bus); | |
779 | assert(n); | |
dfa92725 | 780 | assert(path); |
992c052c LP |
781 | |
782 | /* Tests if there's anything attached directly to this node | |
783 | * for the specified path */ | |
784 | ||
785 | LIST_FOREACH(callbacks, k, n->callbacks) { | |
786 | if (require_fallback && !k->is_fallback) | |
787 | continue; | |
788 | ||
789 | return true; | |
790 | } | |
791 | ||
792 | LIST_FOREACH(vtables, c, n->vtables) { | |
f00c3121 | 793 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
992c052c LP |
794 | |
795 | if (require_fallback && !c->is_fallback) | |
796 | continue; | |
797 | ||
f00c3121 | 798 | if (node_vtable_get_userdata(bus, path, c, NULL, &error) > 0) |
992c052c | 799 | return true; |
68313d3d LP |
800 | if (bus->nodes_modified) |
801 | return false; | |
992c052c LP |
802 | } |
803 | ||
804 | return !require_fallback && (n->enumerators || n->object_manager); | |
805 | } | |
806 | ||
807 | static int process_introspect( | |
808 | sd_bus *bus, | |
809 | sd_bus_message *m, | |
810 | struct node *n, | |
811 | bool require_fallback, | |
812 | bool *found_object) { | |
813 | ||
f00c3121 | 814 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
992c052c LP |
815 | _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; |
816 | _cleanup_set_free_free_ Set *s = NULL; | |
718db961 | 817 | const char *previous_interface = NULL; |
992c052c LP |
818 | struct introspect intro; |
819 | struct node_vtable *c; | |
820 | bool empty; | |
821 | int r; | |
822 | ||
823 | assert(bus); | |
824 | assert(m); | |
825 | assert(n); | |
826 | assert(found_object); | |
827 | ||
f00c3121 | 828 | r = get_child_nodes(bus, m->path, n, &s, &error); |
992c052c | 829 | if (r < 0) |
f00c3121 | 830 | return bus_maybe_reply_error(m, r, &error); |
68313d3d LP |
831 | if (bus->nodes_modified) |
832 | return 0; | |
992c052c LP |
833 | |
834 | r = introspect_begin(&intro); | |
835 | if (r < 0) | |
836 | return r; | |
837 | ||
838 | r = introspect_write_default_interfaces(&intro, bus_node_with_object_manager(bus, n)); | |
839 | if (r < 0) | |
840 | return r; | |
841 | ||
842 | empty = set_isempty(s); | |
843 | ||
844 | LIST_FOREACH(vtables, c, n->vtables) { | |
845 | if (require_fallback && !c->is_fallback) | |
846 | continue; | |
847 | ||
f00c3121 LP |
848 | r = node_vtable_get_userdata(bus, m->path, c, NULL, &error); |
849 | if (r < 0) { | |
850 | r = bus_maybe_reply_error(m, r, &error); | |
851 | goto finish; | |
852 | } | |
853 | if (bus->nodes_modified) { | |
854 | r = 0; | |
855 | goto finish; | |
856 | } | |
992c052c LP |
857 | if (r == 0) |
858 | continue; | |
859 | ||
860 | empty = false; | |
861 | ||
6e8df5f0 LP |
862 | if (c->vtable[0].flags & SD_BUS_VTABLE_HIDDEN) |
863 | continue; | |
864 | ||
718db961 LP |
865 | if (!streq_ptr(previous_interface, c->interface)) { |
866 | ||
867 | if (previous_interface) | |
868 | fputs(" </interface>\n", intro.f); | |
869 | ||
870 | fprintf(intro.f, " <interface name=\"%s\">\n", c->interface); | |
871 | } | |
872 | ||
873 | r = introspect_write_interface(&intro, c->vtable); | |
992c052c LP |
874 | if (r < 0) |
875 | goto finish; | |
718db961 LP |
876 | |
877 | previous_interface = c->interface; | |
992c052c LP |
878 | } |
879 | ||
718db961 LP |
880 | if (previous_interface) |
881 | fputs(" </interface>\n", intro.f); | |
882 | ||
992c052c LP |
883 | if (empty) { |
884 | /* Nothing?, let's see if we exist at all, and if not | |
885 | * refuse to do anything */ | |
886 | r = bus_node_exists(bus, n, m->path, require_fallback); | |
887 | if (r < 0) | |
888 | return r; | |
68313d3d LP |
889 | if (bus->nodes_modified) |
890 | return 0; | |
992c052c LP |
891 | if (r == 0) |
892 | goto finish; | |
893 | } | |
894 | ||
895 | *found_object = true; | |
896 | ||
897 | r = introspect_write_child_nodes(&intro, s, m->path); | |
898 | if (r < 0) | |
899 | goto finish; | |
900 | ||
901 | r = introspect_finish(&intro, bus, m, &reply); | |
902 | if (r < 0) | |
903 | goto finish; | |
904 | ||
905 | r = sd_bus_send(bus, reply, NULL); | |
906 | if (r < 0) | |
907 | goto finish; | |
908 | ||
909 | r = 1; | |
910 | ||
911 | finish: | |
912 | introspect_free(&intro); | |
913 | return r; | |
914 | } | |
915 | ||
992c052c LP |
916 | static int object_manager_serialize_path( |
917 | sd_bus *bus, | |
918 | sd_bus_message *reply, | |
919 | const char *prefix, | |
920 | const char *path, | |
921 | bool require_fallback, | |
922 | sd_bus_error *error) { | |
923 | ||
718db961 LP |
924 | const char *previous_interface = NULL; |
925 | bool found_something = false; | |
992c052c LP |
926 | struct node_vtable *i; |
927 | struct node *n; | |
928 | int r; | |
929 | ||
930 | assert(bus); | |
931 | assert(reply); | |
932 | assert(prefix); | |
933 | assert(path); | |
934 | assert(error); | |
935 | ||
936 | n = hashmap_get(bus->nodes, prefix); | |
937 | if (!n) | |
938 | return 0; | |
939 | ||
992c052c | 940 | LIST_FOREACH(vtables, i, n->vtables) { |
92db139e | 941 | void *u; |
992c052c LP |
942 | |
943 | if (require_fallback && !i->is_fallback) | |
944 | continue; | |
945 | ||
f00c3121 | 946 | r = node_vtable_get_userdata(bus, path, i, &u, error); |
92db139e LP |
947 | if (r < 0) |
948 | return r; | |
68313d3d LP |
949 | if (bus->nodes_modified) |
950 | return 0; | |
92db139e LP |
951 | if (r == 0) |
952 | continue; | |
953 | ||
954 | if (!found_something) { | |
718db961 LP |
955 | |
956 | /* Open the object part */ | |
957 | ||
92db139e LP |
958 | r = sd_bus_message_open_container(reply, 'e', "oa{sa{sv}}"); |
959 | if (r < 0) | |
960 | return r; | |
961 | ||
962 | r = sd_bus_message_append(reply, "o", path); | |
963 | if (r < 0) | |
964 | return r; | |
965 | ||
966 | r = sd_bus_message_open_container(reply, 'a', "{sa{sv}}"); | |
967 | if (r < 0) | |
968 | return r; | |
969 | ||
970 | found_something = true; | |
971 | } | |
972 | ||
718db961 LP |
973 | if (!streq_ptr(previous_interface, i->interface)) { |
974 | ||
975 | /* Maybe close the previous interface part */ | |
976 | ||
977 | if (previous_interface) { | |
978 | r = sd_bus_message_close_container(reply); | |
979 | if (r < 0) | |
980 | return r; | |
981 | ||
982 | r = sd_bus_message_close_container(reply); | |
983 | if (r < 0) | |
984 | return r; | |
985 | } | |
986 | ||
987 | /* Open the new interface part */ | |
988 | ||
989 | r = sd_bus_message_open_container(reply, 'e', "sa{sv}"); | |
990 | if (r < 0) | |
991 | return r; | |
992 | ||
993 | r = sd_bus_message_append(reply, "s", i->interface); | |
994 | if (r < 0) | |
995 | return r; | |
996 | ||
997 | r = sd_bus_message_open_container(reply, 'a', "{sv}"); | |
998 | if (r < 0) | |
999 | return r; | |
1000 | } | |
1001 | ||
1002 | r = vtable_append_all_properties(bus, reply, path, i, u, error); | |
992c052c LP |
1003 | if (r < 0) |
1004 | return r; | |
68313d3d LP |
1005 | if (bus->nodes_modified) |
1006 | return 0; | |
718db961 LP |
1007 | |
1008 | previous_interface = i->interface; | |
1009 | } | |
1010 | ||
1011 | if (previous_interface) { | |
1012 | r = sd_bus_message_close_container(reply); | |
1013 | if (r < 0) | |
1014 | return r; | |
1015 | ||
1016 | r = sd_bus_message_close_container(reply); | |
1017 | if (r < 0) | |
1018 | return r; | |
992c052c LP |
1019 | } |
1020 | ||
92db139e LP |
1021 | if (found_something) { |
1022 | r = sd_bus_message_close_container(reply); | |
1023 | if (r < 0) | |
1024 | return r; | |
992c052c | 1025 | |
92db139e LP |
1026 | r = sd_bus_message_close_container(reply); |
1027 | if (r < 0) | |
1028 | return r; | |
1029 | } | |
992c052c LP |
1030 | |
1031 | return 1; | |
1032 | } | |
1033 | ||
1034 | static int object_manager_serialize_path_and_fallbacks( | |
1035 | sd_bus *bus, | |
1036 | sd_bus_message *reply, | |
1037 | const char *path, | |
1038 | sd_bus_error *error) { | |
1039 | ||
92e189e5 | 1040 | char *prefix; |
992c052c LP |
1041 | int r; |
1042 | ||
1043 | assert(bus); | |
1044 | assert(reply); | |
1045 | assert(path); | |
1046 | assert(error); | |
1047 | ||
1048 | /* First, add all vtables registered for this path */ | |
1049 | r = object_manager_serialize_path(bus, reply, path, path, false, error); | |
1050 | if (r < 0) | |
1051 | return r; | |
68313d3d LP |
1052 | if (bus->nodes_modified) |
1053 | return 0; | |
992c052c LP |
1054 | |
1055 | /* Second, add fallback vtables registered for any of the prefixes */ | |
92e189e5 LP |
1056 | prefix = alloca(strlen(path) + 1); |
1057 | OBJECT_PATH_FOREACH_PREFIX(prefix, path) { | |
1058 | r = object_manager_serialize_path(bus, reply, prefix, path, true, error); | |
1059 | if (r < 0) | |
1060 | return r; | |
68313d3d LP |
1061 | if (bus->nodes_modified) |
1062 | return 0; | |
992c052c LP |
1063 | } |
1064 | ||
1065 | return 0; | |
1066 | } | |
1067 | ||
1068 | static int process_get_managed_objects( | |
1069 | sd_bus *bus, | |
1070 | sd_bus_message *m, | |
1071 | struct node *n, | |
1072 | bool require_fallback, | |
1073 | bool *found_object) { | |
1074 | ||
f00c3121 | 1075 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
992c052c LP |
1076 | _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; |
1077 | _cleanup_set_free_free_ Set *s = NULL; | |
1078 | bool empty; | |
1079 | int r; | |
1080 | ||
1081 | assert(bus); | |
1082 | assert(m); | |
1083 | assert(n); | |
1084 | assert(found_object); | |
1085 | ||
1086 | if (!bus_node_with_object_manager(bus, n)) | |
1087 | return 0; | |
1088 | ||
f00c3121 | 1089 | r = get_child_nodes(bus, m->path, n, &s, &error); |
992c052c LP |
1090 | if (r < 0) |
1091 | return r; | |
68313d3d LP |
1092 | if (bus->nodes_modified) |
1093 | return 0; | |
992c052c | 1094 | |
df2d202e | 1095 | r = sd_bus_message_new_method_return(m, &reply); |
992c052c LP |
1096 | if (r < 0) |
1097 | return r; | |
1098 | ||
1099 | r = sd_bus_message_open_container(reply, 'a', "{oa{sa{sv}}}"); | |
1100 | if (r < 0) | |
1101 | return r; | |
1102 | ||
1103 | empty = set_isempty(s); | |
1104 | if (empty) { | |
1105 | struct node_vtable *c; | |
1106 | ||
1107 | /* Hmm, so we have no children? Then let's check | |
1108 | * whether we exist at all, i.e. whether at least one | |
1109 | * vtable exists. */ | |
1110 | ||
1111 | LIST_FOREACH(vtables, c, n->vtables) { | |
1112 | ||
1113 | if (require_fallback && !c->is_fallback) | |
1114 | continue; | |
1115 | ||
1116 | if (r < 0) | |
1117 | return r; | |
1118 | if (r == 0) | |
1119 | continue; | |
1120 | ||
1121 | empty = false; | |
1122 | break; | |
1123 | } | |
1124 | ||
1125 | if (empty) | |
1126 | return 0; | |
1127 | } else { | |
1128 | Iterator i; | |
1129 | char *path; | |
1130 | ||
1131 | SET_FOREACH(path, s, i) { | |
992c052c LP |
1132 | r = object_manager_serialize_path_and_fallbacks(bus, reply, path, &error); |
1133 | if (r < 0) | |
f00c3121 | 1134 | return r; |
68313d3d LP |
1135 | |
1136 | if (bus->nodes_modified) | |
1137 | return 0; | |
992c052c LP |
1138 | } |
1139 | } | |
1140 | ||
1141 | r = sd_bus_message_close_container(reply); | |
1142 | if (r < 0) | |
1143 | return r; | |
1144 | ||
1145 | r = sd_bus_send(bus, reply, NULL); | |
1146 | if (r < 0) | |
1147 | return r; | |
1148 | ||
1149 | return 1; | |
1150 | } | |
1151 | ||
1152 | static int object_find_and_run( | |
1153 | sd_bus *bus, | |
1154 | sd_bus_message *m, | |
1155 | const char *p, | |
1156 | bool require_fallback, | |
1157 | bool *found_object) { | |
1158 | ||
1159 | struct node *n; | |
1160 | struct vtable_member vtable_key, *v; | |
1161 | int r; | |
1162 | ||
1163 | assert(bus); | |
1164 | assert(m); | |
1165 | assert(p); | |
1166 | assert(found_object); | |
1167 | ||
1168 | n = hashmap_get(bus->nodes, p); | |
1169 | if (!n) | |
1170 | return 0; | |
1171 | ||
1172 | /* First, try object callbacks */ | |
1173 | r = node_callbacks_run(bus, m, n->callbacks, require_fallback, found_object); | |
1174 | if (r != 0) | |
1175 | return r; | |
68313d3d LP |
1176 | if (bus->nodes_modified) |
1177 | return 0; | |
992c052c LP |
1178 | |
1179 | if (!m->interface || !m->member) | |
1180 | return 0; | |
1181 | ||
1182 | /* Then, look for a known method */ | |
1183 | vtable_key.path = (char*) p; | |
1184 | vtable_key.interface = m->interface; | |
1185 | vtable_key.member = m->member; | |
1186 | ||
1187 | v = hashmap_get(bus->vtable_methods, &vtable_key); | |
1188 | if (v) { | |
1189 | r = method_callbacks_run(bus, m, v, require_fallback, found_object); | |
1190 | if (r != 0) | |
1191 | return r; | |
68313d3d LP |
1192 | if (bus->nodes_modified) |
1193 | return 0; | |
992c052c LP |
1194 | } |
1195 | ||
1196 | /* Then, look for a known property */ | |
1197 | if (streq(m->interface, "org.freedesktop.DBus.Properties")) { | |
1198 | bool get = false; | |
1199 | ||
1200 | get = streq(m->member, "Get"); | |
1201 | ||
1202 | if (get || streq(m->member, "Set")) { | |
1203 | ||
1204 | r = sd_bus_message_rewind(m, true); | |
1205 | if (r < 0) | |
1206 | return r; | |
1207 | ||
1208 | vtable_key.path = (char*) p; | |
1209 | ||
1210 | r = sd_bus_message_read(m, "ss", &vtable_key.interface, &vtable_key.member); | |
1211 | if (r < 0) | |
0fc5ab90 | 1212 | return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected interface and member parameters"); |
992c052c LP |
1213 | |
1214 | v = hashmap_get(bus->vtable_properties, &vtable_key); | |
1215 | if (v) { | |
1216 | r = property_get_set_callbacks_run(bus, m, v, require_fallback, get, found_object); | |
1217 | if (r != 0) | |
1218 | return r; | |
1219 | } | |
1220 | ||
1221 | } else if (streq(m->member, "GetAll")) { | |
1222 | const char *iface; | |
1223 | ||
1224 | r = sd_bus_message_rewind(m, true); | |
1225 | if (r < 0) | |
1226 | return r; | |
1227 | ||
1228 | r = sd_bus_message_read(m, "s", &iface); | |
1229 | if (r < 0) | |
0fc5ab90 | 1230 | return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected interface parameter"); |
992c052c LP |
1231 | |
1232 | if (iface[0] == 0) | |
1233 | iface = NULL; | |
1234 | ||
1235 | r = property_get_all_callbacks_run(bus, m, n->vtables, require_fallback, iface, found_object); | |
1236 | if (r != 0) | |
1237 | return r; | |
1238 | } | |
1239 | ||
1240 | } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Introspectable", "Introspect")) { | |
1241 | ||
0fc5ab90 LP |
1242 | if (!isempty(sd_bus_message_get_signature(m, true))) |
1243 | return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected no parameters"); | |
1244 | ||
992c052c LP |
1245 | r = process_introspect(bus, m, n, require_fallback, found_object); |
1246 | if (r != 0) | |
1247 | return r; | |
1248 | ||
1249 | } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus.ObjectManager", "GetManagedObjects")) { | |
1250 | ||
0fc5ab90 LP |
1251 | if (!isempty(sd_bus_message_get_signature(m, true))) |
1252 | return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected no parameters"); | |
1253 | ||
992c052c LP |
1254 | r = process_get_managed_objects(bus, m, n, require_fallback, found_object); |
1255 | if (r != 0) | |
1256 | return r; | |
1257 | } | |
1258 | ||
68313d3d LP |
1259 | if (bus->nodes_modified) |
1260 | return 0; | |
1261 | ||
992c052c LP |
1262 | if (!*found_object) { |
1263 | r = bus_node_exists(bus, n, m->path, require_fallback); | |
1264 | if (r < 0) | |
1265 | return r; | |
992c052c LP |
1266 | if (r > 0) |
1267 | *found_object = true; | |
1268 | } | |
1269 | ||
1270 | return 0; | |
1271 | } | |
1272 | ||
1273 | int bus_process_object(sd_bus *bus, sd_bus_message *m) { | |
1274 | int r; | |
1275 | size_t pl; | |
1276 | bool found_object = false; | |
1277 | ||
1278 | assert(bus); | |
1279 | assert(m); | |
1280 | ||
40ca29a1 | 1281 | if (m->header->type != SD_BUS_MESSAGE_METHOD_CALL) |
992c052c LP |
1282 | return 0; |
1283 | ||
992c052c LP |
1284 | if (hashmap_isempty(bus->nodes)) |
1285 | return 0; | |
1286 | ||
f820cf99 LP |
1287 | /* Never respond to broadcast messages */ |
1288 | if (bus->bus_client && !m->destination) | |
1289 | return 0; | |
1290 | ||
adacb957 LP |
1291 | assert(m->path); |
1292 | assert(m->member); | |
1293 | ||
992c052c LP |
1294 | pl = strlen(m->path); |
1295 | do { | |
92e189e5 | 1296 | char prefix[pl+1]; |
992c052c LP |
1297 | |
1298 | bus->nodes_modified = false; | |
1299 | ||
1300 | r = object_find_and_run(bus, m, m->path, false, &found_object); | |
1301 | if (r != 0) | |
1302 | return r; | |
1303 | ||
1304 | /* Look for fallback prefixes */ | |
92e189e5 | 1305 | OBJECT_PATH_FOREACH_PREFIX(prefix, m->path) { |
992c052c LP |
1306 | |
1307 | if (bus->nodes_modified) | |
1308 | break; | |
1309 | ||
92e189e5 | 1310 | r = object_find_and_run(bus, m, prefix, true, &found_object); |
992c052c LP |
1311 | if (r != 0) |
1312 | return r; | |
1313 | } | |
1314 | ||
1315 | } while (bus->nodes_modified); | |
1316 | ||
1317 | if (!found_object) | |
1318 | return 0; | |
1319 | ||
1320 | if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Properties", "Get") || | |
1321 | sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Properties", "Set")) | |
1322 | r = sd_bus_reply_method_errorf( | |
df2d202e | 1323 | m, |
40ca29a1 | 1324 | SD_BUS_ERROR_UNKNOWN_PROPERTY, |
992c052c LP |
1325 | "Unknown property or interface."); |
1326 | else | |
1327 | r = sd_bus_reply_method_errorf( | |
df2d202e | 1328 | m, |
40ca29a1 | 1329 | SD_BUS_ERROR_UNKNOWN_METHOD, |
992c052c LP |
1330 | "Unknown method '%s' or interface '%s'.", m->member, m->interface); |
1331 | ||
1332 | if (r < 0) | |
1333 | return r; | |
1334 | ||
1335 | return 1; | |
1336 | } | |
1337 | ||
1338 | static struct node *bus_node_allocate(sd_bus *bus, const char *path) { | |
1339 | struct node *n, *parent; | |
1340 | const char *e; | |
2fd069b1 ZJS |
1341 | _cleanup_free_ char *s = NULL; |
1342 | char *p; | |
992c052c LP |
1343 | int r; |
1344 | ||
1345 | assert(bus); | |
1346 | assert(path); | |
1347 | assert(path[0] == '/'); | |
1348 | ||
1349 | n = hashmap_get(bus->nodes, path); | |
1350 | if (n) | |
1351 | return n; | |
1352 | ||
1353 | r = hashmap_ensure_allocated(&bus->nodes, string_hash_func, string_compare_func); | |
1354 | if (r < 0) | |
1355 | return NULL; | |
1356 | ||
1357 | s = strdup(path); | |
1358 | if (!s) | |
1359 | return NULL; | |
1360 | ||
1361 | if (streq(path, "/")) | |
1362 | parent = NULL; | |
1363 | else { | |
1364 | e = strrchr(path, '/'); | |
1365 | assert(e); | |
1366 | ||
1367 | p = strndupa(path, MAX(1, path - e)); | |
1368 | ||
1369 | parent = bus_node_allocate(bus, p); | |
2fd069b1 | 1370 | if (!parent) |
992c052c | 1371 | return NULL; |
992c052c LP |
1372 | } |
1373 | ||
1374 | n = new0(struct node, 1); | |
1375 | if (!n) | |
1376 | return NULL; | |
1377 | ||
1378 | n->parent = parent; | |
1379 | n->path = s; | |
2fd069b1 | 1380 | s = NULL; /* do not free */ |
992c052c LP |
1381 | |
1382 | r = hashmap_put(bus->nodes, s, n); | |
1383 | if (r < 0) { | |
2fd069b1 | 1384 | free(n->path); |
992c052c LP |
1385 | free(n); |
1386 | return NULL; | |
1387 | } | |
1388 | ||
1389 | if (parent) | |
71fda00f | 1390 | LIST_PREPEND(siblings, parent->child, n); |
992c052c LP |
1391 | |
1392 | return n; | |
1393 | } | |
1394 | ||
1395 | static void bus_node_gc(sd_bus *b, struct node *n) { | |
1396 | assert(b); | |
1397 | ||
1398 | if (!n) | |
1399 | return; | |
1400 | ||
1401 | if (n->child || | |
1402 | n->callbacks || | |
1403 | n->vtables || | |
1404 | n->enumerators || | |
1405 | n->object_manager) | |
1406 | return; | |
1407 | ||
1408 | assert(hashmap_remove(b->nodes, n->path) == n); | |
1409 | ||
1410 | if (n->parent) | |
71fda00f | 1411 | LIST_REMOVE(siblings, n->parent->child, n); |
992c052c LP |
1412 | |
1413 | free(n->path); | |
1414 | bus_node_gc(b, n->parent); | |
1415 | free(n); | |
1416 | } | |
1417 | ||
1418 | static int bus_add_object( | |
dfa92725 | 1419 | sd_bus *bus, |
992c052c LP |
1420 | bool fallback, |
1421 | const char *path, | |
1422 | sd_bus_message_handler_t callback, | |
1423 | void *userdata) { | |
1424 | ||
1425 | struct node_callback *c; | |
1426 | struct node *n; | |
1427 | int r; | |
1428 | ||
dfa92725 LP |
1429 | assert_return(bus, -EINVAL); |
1430 | assert_return(object_path_is_valid(path), -EINVAL); | |
1431 | assert_return(callback, -EINVAL); | |
1432 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
992c052c | 1433 | |
dfa92725 | 1434 | n = bus_node_allocate(bus, path); |
992c052c LP |
1435 | if (!n) |
1436 | return -ENOMEM; | |
1437 | ||
1438 | c = new0(struct node_callback, 1); | |
1439 | if (!c) { | |
1440 | r = -ENOMEM; | |
1441 | goto fail; | |
1442 | } | |
1443 | ||
1444 | c->node = n; | |
1445 | c->callback = callback; | |
1446 | c->userdata = userdata; | |
1447 | c->is_fallback = fallback; | |
1448 | ||
71fda00f | 1449 | LIST_PREPEND(callbacks, n->callbacks, c); |
68313d3d LP |
1450 | bus->nodes_modified = true; |
1451 | ||
992c052c LP |
1452 | return 0; |
1453 | ||
1454 | fail: | |
1455 | free(c); | |
dfa92725 | 1456 | bus_node_gc(bus, n); |
992c052c LP |
1457 | return r; |
1458 | } | |
1459 | ||
1460 | static int bus_remove_object( | |
1461 | sd_bus *bus, | |
1462 | bool fallback, | |
1463 | const char *path, | |
1464 | sd_bus_message_handler_t callback, | |
1465 | void *userdata) { | |
1466 | ||
1467 | struct node_callback *c; | |
1468 | struct node *n; | |
1469 | ||
dfa92725 LP |
1470 | assert_return(bus, -EINVAL); |
1471 | assert_return(object_path_is_valid(path), -EINVAL); | |
1472 | assert_return(callback, -EINVAL); | |
1473 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
992c052c LP |
1474 | |
1475 | n = hashmap_get(bus->nodes, path); | |
1476 | if (!n) | |
1477 | return 0; | |
1478 | ||
1479 | LIST_FOREACH(callbacks, c, n->callbacks) | |
1480 | if (c->callback == callback && c->userdata == userdata && c->is_fallback == fallback) | |
1481 | break; | |
1482 | if (!c) | |
1483 | return 0; | |
1484 | ||
71fda00f | 1485 | LIST_REMOVE(callbacks, n->callbacks, c); |
992c052c LP |
1486 | free(c); |
1487 | ||
1488 | bus_node_gc(bus, n); | |
68313d3d | 1489 | bus->nodes_modified = true; |
992c052c LP |
1490 | |
1491 | return 1; | |
1492 | } | |
1493 | ||
d9f644e2 ZJS |
1494 | _public_ int sd_bus_add_object(sd_bus *bus, |
1495 | const char *path, | |
1496 | sd_bus_message_handler_t callback, | |
1497 | void *userdata) { | |
1498 | ||
992c052c LP |
1499 | return bus_add_object(bus, false, path, callback, userdata); |
1500 | } | |
1501 | ||
d9f644e2 ZJS |
1502 | _public_ int sd_bus_remove_object(sd_bus *bus, |
1503 | const char *path, | |
1504 | sd_bus_message_handler_t callback, | |
1505 | void *userdata) { | |
1506 | ||
992c052c LP |
1507 | return bus_remove_object(bus, false, path, callback, userdata); |
1508 | } | |
1509 | ||
d9f644e2 ZJS |
1510 | _public_ int sd_bus_add_fallback(sd_bus *bus, |
1511 | const char *prefix, | |
1512 | sd_bus_message_handler_t callback, | |
1513 | void *userdata) { | |
1514 | ||
992c052c LP |
1515 | return bus_add_object(bus, true, prefix, callback, userdata); |
1516 | } | |
1517 | ||
d9f644e2 ZJS |
1518 | _public_ int sd_bus_remove_fallback(sd_bus *bus, |
1519 | const char *prefix, | |
1520 | sd_bus_message_handler_t callback, | |
1521 | void *userdata) { | |
1522 | ||
992c052c LP |
1523 | return bus_remove_object(bus, true, prefix, callback, userdata); |
1524 | } | |
1525 | ||
1526 | static void free_node_vtable(sd_bus *bus, struct node_vtable *w) { | |
1527 | assert(bus); | |
1528 | ||
1529 | if (!w) | |
1530 | return; | |
1531 | ||
1532 | if (w->interface && w->node && w->vtable) { | |
1533 | const sd_bus_vtable *v; | |
1534 | ||
1535 | for (v = w->vtable; v->type != _SD_BUS_VTABLE_END; v++) { | |
1536 | struct vtable_member *x = NULL; | |
1537 | ||
1538 | switch (v->type) { | |
1539 | ||
1540 | case _SD_BUS_VTABLE_METHOD: { | |
1541 | struct vtable_member key; | |
1542 | ||
1543 | key.path = w->node->path; | |
1544 | key.interface = w->interface; | |
77a874a3 | 1545 | key.member = v->x.method.member; |
992c052c LP |
1546 | |
1547 | x = hashmap_remove(bus->vtable_methods, &key); | |
1548 | break; | |
1549 | } | |
1550 | ||
1551 | case _SD_BUS_VTABLE_PROPERTY: | |
1552 | case _SD_BUS_VTABLE_WRITABLE_PROPERTY: { | |
1553 | struct vtable_member key; | |
1554 | ||
1555 | key.path = w->node->path; | |
1556 | key.interface = w->interface; | |
77a874a3 | 1557 | key.member = v->x.property.member; |
992c052c LP |
1558 | x = hashmap_remove(bus->vtable_properties, &key); |
1559 | break; | |
1560 | }} | |
1561 | ||
1562 | free(x); | |
1563 | } | |
1564 | } | |
1565 | ||
1566 | free(w->interface); | |
1567 | free(w); | |
1568 | } | |
1569 | ||
1570 | static unsigned vtable_member_hash_func(const void *a) { | |
1571 | const struct vtable_member *m = a; | |
1572 | ||
dfa92725 LP |
1573 | assert(m); |
1574 | ||
992c052c LP |
1575 | return |
1576 | string_hash_func(m->path) ^ | |
1577 | string_hash_func(m->interface) ^ | |
1578 | string_hash_func(m->member); | |
1579 | } | |
1580 | ||
1581 | static int vtable_member_compare_func(const void *a, const void *b) { | |
1582 | const struct vtable_member *x = a, *y = b; | |
1583 | int r; | |
1584 | ||
dfa92725 LP |
1585 | assert(x); |
1586 | assert(y); | |
1587 | ||
992c052c LP |
1588 | r = strcmp(x->path, y->path); |
1589 | if (r != 0) | |
1590 | return r; | |
1591 | ||
1592 | r = strcmp(x->interface, y->interface); | |
1593 | if (r != 0) | |
1594 | return r; | |
1595 | ||
1596 | return strcmp(x->member, y->member); | |
1597 | } | |
1598 | ||
1599 | static int add_object_vtable_internal( | |
1600 | sd_bus *bus, | |
1601 | const char *path, | |
1602 | const char *interface, | |
1603 | const sd_bus_vtable *vtable, | |
1604 | bool fallback, | |
1605 | sd_bus_object_find_t find, | |
1606 | void *userdata) { | |
1607 | ||
718db961 | 1608 | struct node_vtable *c = NULL, *i, *existing = NULL; |
992c052c LP |
1609 | const sd_bus_vtable *v; |
1610 | struct node *n; | |
1611 | int r; | |
1612 | ||
dfa92725 LP |
1613 | assert_return(bus, -EINVAL); |
1614 | assert_return(object_path_is_valid(path), -EINVAL); | |
1615 | assert_return(interface_name_is_valid(interface), -EINVAL); | |
1616 | assert_return(vtable, -EINVAL); | |
1617 | assert_return(vtable[0].type == _SD_BUS_VTABLE_START, -EINVAL); | |
1618 | assert_return(vtable[0].x.start.element_size == sizeof(struct sd_bus_vtable), -EINVAL); | |
1619 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
718db961 LP |
1620 | assert_return(!streq(interface, "org.freedesktop.DBus.Properties") && |
1621 | !streq(interface, "org.freedesktop.DBus.Introspectable") && | |
1622 | !streq(interface, "org.freedesktop.DBus.Peer") && | |
1623 | !streq(interface, "org.freedesktop.DBus.ObjectManager"), -EINVAL); | |
992c052c LP |
1624 | |
1625 | r = hashmap_ensure_allocated(&bus->vtable_methods, vtable_member_hash_func, vtable_member_compare_func); | |
1626 | if (r < 0) | |
1627 | return r; | |
1628 | ||
1629 | r = hashmap_ensure_allocated(&bus->vtable_properties, vtable_member_hash_func, vtable_member_compare_func); | |
1630 | if (r < 0) | |
1631 | return r; | |
1632 | ||
1633 | n = bus_node_allocate(bus, path); | |
1634 | if (!n) | |
1635 | return -ENOMEM; | |
1636 | ||
1637 | LIST_FOREACH(vtables, i, n->vtables) { | |
992c052c LP |
1638 | if (i->is_fallback != fallback) { |
1639 | r = -EPROTOTYPE; | |
1640 | goto fail; | |
1641 | } | |
718db961 LP |
1642 | |
1643 | if (streq(i->interface, interface)) { | |
1644 | ||
1645 | if (i->vtable == vtable) { | |
1646 | r = -EEXIST; | |
1647 | goto fail; | |
1648 | } | |
1649 | ||
1650 | existing = i; | |
1651 | } | |
992c052c LP |
1652 | } |
1653 | ||
1654 | c = new0(struct node_vtable, 1); | |
1655 | if (!c) { | |
1656 | r = -ENOMEM; | |
1657 | goto fail; | |
1658 | } | |
1659 | ||
1660 | c->node = n; | |
1661 | c->is_fallback = fallback; | |
1662 | c->vtable = vtable; | |
1663 | c->userdata = userdata; | |
1664 | c->find = find; | |
1665 | ||
1666 | c->interface = strdup(interface); | |
1667 | if (!c->interface) { | |
1668 | r = -ENOMEM; | |
1669 | goto fail; | |
1670 | } | |
1671 | ||
1672 | for (v = c->vtable+1; v->type != _SD_BUS_VTABLE_END; v++) { | |
1673 | ||
1674 | switch (v->type) { | |
1675 | ||
1676 | case _SD_BUS_VTABLE_METHOD: { | |
1677 | struct vtable_member *m; | |
1678 | ||
77a874a3 LP |
1679 | if (!member_name_is_valid(v->x.method.member) || |
1680 | !signature_is_valid(strempty(v->x.method.signature), false) || | |
1681 | !signature_is_valid(strempty(v->x.method.result), false) || | |
1682 | !(v->x.method.handler || (isempty(v->x.method.signature) && isempty(v->x.method.result))) || | |
992c052c LP |
1683 | v->flags & (SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE|SD_BUS_VTABLE_PROPERTY_INVALIDATE_ONLY)) { |
1684 | r = -EINVAL; | |
1685 | goto fail; | |
1686 | } | |
1687 | ||
1688 | m = new0(struct vtable_member, 1); | |
1689 | if (!m) { | |
1690 | r = -ENOMEM; | |
1691 | goto fail; | |
1692 | } | |
1693 | ||
1694 | m->parent = c; | |
1695 | m->path = n->path; | |
1696 | m->interface = c->interface; | |
77a874a3 | 1697 | m->member = v->x.method.member; |
992c052c LP |
1698 | m->vtable = v; |
1699 | ||
1700 | r = hashmap_put(bus->vtable_methods, m, m); | |
1701 | if (r < 0) { | |
1702 | free(m); | |
1703 | goto fail; | |
1704 | } | |
1705 | ||
1706 | break; | |
1707 | } | |
1708 | ||
1709 | case _SD_BUS_VTABLE_WRITABLE_PROPERTY: | |
1710 | ||
77a874a3 | 1711 | if (!(v->x.property.set || bus_type_is_basic(v->x.property.signature[0]))) { |
992c052c LP |
1712 | r = -EINVAL; |
1713 | goto fail; | |
1714 | } | |
1715 | ||
1716 | /* Fall through */ | |
1717 | ||
1718 | case _SD_BUS_VTABLE_PROPERTY: { | |
1719 | struct vtable_member *m; | |
1720 | ||
77a874a3 LP |
1721 | if (!member_name_is_valid(v->x.property.member) || |
1722 | !signature_is_single(v->x.property.signature, false) || | |
c13c7de3 | 1723 | !(v->x.property.get || bus_type_is_basic(v->x.property.signature[0]) || streq(v->x.property.signature, "as")) || |
992c052c | 1724 | v->flags & SD_BUS_VTABLE_METHOD_NO_REPLY || |
adacb957 LP |
1725 | (v->flags & SD_BUS_VTABLE_PROPERTY_INVALIDATE_ONLY && !(v->flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE)) || |
1726 | (v->flags & SD_BUS_VTABLE_UNPRIVILEGED && v->type == _SD_BUS_VTABLE_PROPERTY)) { | |
992c052c LP |
1727 | r = -EINVAL; |
1728 | goto fail; | |
1729 | } | |
1730 | ||
1731 | ||
1732 | m = new0(struct vtable_member, 1); | |
1733 | if (!m) { | |
1734 | r = -ENOMEM; | |
1735 | goto fail; | |
1736 | } | |
1737 | ||
1738 | m->parent = c; | |
1739 | m->path = n->path; | |
1740 | m->interface = c->interface; | |
77a874a3 | 1741 | m->member = v->x.property.member; |
992c052c LP |
1742 | m->vtable = v; |
1743 | ||
1744 | r = hashmap_put(bus->vtable_properties, m, m); | |
1745 | if (r < 0) { | |
1746 | free(m); | |
1747 | goto fail; | |
1748 | } | |
1749 | ||
1750 | break; | |
1751 | } | |
1752 | ||
1753 | case _SD_BUS_VTABLE_SIGNAL: | |
1754 | ||
77a874a3 | 1755 | if (!member_name_is_valid(v->x.signal.member) || |
adacb957 LP |
1756 | !signature_is_valid(strempty(v->x.signal.signature), false) || |
1757 | v->flags & SD_BUS_VTABLE_UNPRIVILEGED) { | |
992c052c LP |
1758 | r = -EINVAL; |
1759 | goto fail; | |
1760 | } | |
1761 | ||
1762 | break; | |
1763 | ||
1764 | default: | |
1765 | r = -EINVAL; | |
1766 | goto fail; | |
1767 | } | |
1768 | } | |
1769 | ||
718db961 | 1770 | LIST_INSERT_AFTER(vtables, n->vtables, existing, c); |
68313d3d LP |
1771 | bus->nodes_modified = true; |
1772 | ||
992c052c LP |
1773 | return 0; |
1774 | ||
1775 | fail: | |
1776 | if (c) | |
1777 | free_node_vtable(bus, c); | |
1778 | ||
1779 | bus_node_gc(bus, n); | |
1780 | return r; | |
1781 | } | |
1782 | ||
1783 | static int remove_object_vtable_internal( | |
1784 | sd_bus *bus, | |
1785 | const char *path, | |
1786 | const char *interface, | |
718db961 LP |
1787 | const sd_bus_vtable *vtable, |
1788 | bool fallback, | |
1789 | sd_bus_object_find_t find, | |
1790 | void *userdata) { | |
992c052c LP |
1791 | |
1792 | struct node_vtable *c; | |
1793 | struct node *n; | |
1794 | ||
dfa92725 LP |
1795 | assert_return(bus, -EINVAL); |
1796 | assert_return(object_path_is_valid(path), -EINVAL); | |
1797 | assert_return(interface_name_is_valid(interface), -EINVAL); | |
1798 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
992c052c LP |
1799 | |
1800 | n = hashmap_get(bus->nodes, path); | |
1801 | if (!n) | |
1802 | return 0; | |
1803 | ||
1804 | LIST_FOREACH(vtables, c, n->vtables) | |
718db961 LP |
1805 | if (streq(c->interface, interface) && |
1806 | c->is_fallback == fallback && | |
1807 | c->vtable == vtable && | |
1808 | c->find == find && | |
1809 | c->userdata == userdata) | |
992c052c LP |
1810 | break; |
1811 | ||
1812 | if (!c) | |
1813 | return 0; | |
1814 | ||
71fda00f | 1815 | LIST_REMOVE(vtables, n->vtables, c); |
992c052c LP |
1816 | |
1817 | free_node_vtable(bus, c); | |
dfa92725 LP |
1818 | bus_node_gc(bus, n); |
1819 | ||
68313d3d LP |
1820 | bus->nodes_modified = true; |
1821 | ||
992c052c LP |
1822 | return 1; |
1823 | } | |
1824 | ||
d9f644e2 | 1825 | _public_ int sd_bus_add_object_vtable( |
992c052c LP |
1826 | sd_bus *bus, |
1827 | const char *path, | |
1828 | const char *interface, | |
1829 | const sd_bus_vtable *vtable, | |
1830 | void *userdata) { | |
1831 | ||
1832 | return add_object_vtable_internal(bus, path, interface, vtable, false, NULL, userdata); | |
1833 | } | |
1834 | ||
d9f644e2 | 1835 | _public_ int sd_bus_remove_object_vtable( |
992c052c LP |
1836 | sd_bus *bus, |
1837 | const char *path, | |
718db961 LP |
1838 | const char *interface, |
1839 | const sd_bus_vtable *vtable, | |
1840 | void *userdata) { | |
992c052c | 1841 | |
718db961 | 1842 | return remove_object_vtable_internal(bus, path, interface, vtable, false, NULL, userdata); |
992c052c LP |
1843 | } |
1844 | ||
d9f644e2 | 1845 | _public_ int sd_bus_add_fallback_vtable( |
992c052c LP |
1846 | sd_bus *bus, |
1847 | const char *path, | |
1848 | const char *interface, | |
1849 | const sd_bus_vtable *vtable, | |
1850 | sd_bus_object_find_t find, | |
1851 | void *userdata) { | |
1852 | ||
1853 | return add_object_vtable_internal(bus, path, interface, vtable, true, find, userdata); | |
1854 | } | |
1855 | ||
d9f644e2 | 1856 | _public_ int sd_bus_remove_fallback_vtable( |
992c052c LP |
1857 | sd_bus *bus, |
1858 | const char *path, | |
718db961 LP |
1859 | const char *interface, |
1860 | const sd_bus_vtable *vtable, | |
1861 | sd_bus_object_find_t find, | |
1862 | void *userdata) { | |
992c052c | 1863 | |
718db961 | 1864 | return remove_object_vtable_internal(bus, path, interface, vtable, true, find, userdata); |
992c052c LP |
1865 | } |
1866 | ||
d9f644e2 | 1867 | _public_ int sd_bus_add_node_enumerator( |
992c052c LP |
1868 | sd_bus *bus, |
1869 | const char *path, | |
1870 | sd_bus_node_enumerator_t callback, | |
1871 | void *userdata) { | |
1872 | ||
1873 | struct node_enumerator *c; | |
1874 | struct node *n; | |
1875 | int r; | |
1876 | ||
dfa92725 LP |
1877 | assert_return(bus, -EINVAL); |
1878 | assert_return(object_path_is_valid(path), -EINVAL); | |
1879 | assert_return(callback, -EINVAL); | |
1880 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
992c052c LP |
1881 | |
1882 | n = bus_node_allocate(bus, path); | |
1883 | if (!n) | |
1884 | return -ENOMEM; | |
1885 | ||
1886 | c = new0(struct node_enumerator, 1); | |
1887 | if (!c) { | |
1888 | r = -ENOMEM; | |
1889 | goto fail; | |
1890 | } | |
1891 | ||
1892 | c->node = n; | |
1893 | c->callback = callback; | |
1894 | c->userdata = userdata; | |
1895 | ||
71fda00f | 1896 | LIST_PREPEND(enumerators, n->enumerators, c); |
68313d3d LP |
1897 | |
1898 | bus->nodes_modified = true; | |
1899 | ||
992c052c LP |
1900 | return 0; |
1901 | ||
1902 | fail: | |
1903 | free(c); | |
1904 | bus_node_gc(bus, n); | |
1905 | return r; | |
1906 | } | |
1907 | ||
d9f644e2 | 1908 | _public_ int sd_bus_remove_node_enumerator( |
992c052c LP |
1909 | sd_bus *bus, |
1910 | const char *path, | |
1911 | sd_bus_node_enumerator_t callback, | |
1912 | void *userdata) { | |
1913 | ||
1914 | struct node_enumerator *c; | |
1915 | struct node *n; | |
1916 | ||
dfa92725 LP |
1917 | assert_return(bus, -EINVAL); |
1918 | assert_return(object_path_is_valid(path), -EINVAL); | |
1919 | assert_return(callback, -EINVAL); | |
1920 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
992c052c LP |
1921 | |
1922 | n = hashmap_get(bus->nodes, path); | |
1923 | if (!n) | |
1924 | return 0; | |
1925 | ||
1926 | LIST_FOREACH(enumerators, c, n->enumerators) | |
1927 | if (c->callback == callback && c->userdata == userdata) | |
1928 | break; | |
1929 | ||
1930 | if (!c) | |
1931 | return 0; | |
1932 | ||
71fda00f | 1933 | LIST_REMOVE(enumerators, n->enumerators, c); |
992c052c LP |
1934 | free(c); |
1935 | ||
1936 | bus_node_gc(bus, n); | |
1937 | ||
68313d3d LP |
1938 | bus->nodes_modified = true; |
1939 | ||
992c052c LP |
1940 | return 1; |
1941 | } | |
1942 | ||
1943 | static int emit_properties_changed_on_interface( | |
1944 | sd_bus *bus, | |
1945 | const char *prefix, | |
1946 | const char *path, | |
1947 | const char *interface, | |
1948 | bool require_fallback, | |
1949 | char **names) { | |
1950 | ||
f00c3121 | 1951 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
992c052c | 1952 | _cleanup_bus_message_unref_ sd_bus_message *m = NULL; |
718db961 LP |
1953 | bool has_invalidating = false, has_changing = false; |
1954 | struct vtable_member key = {}; | |
992c052c LP |
1955 | struct node_vtable *c; |
1956 | struct node *n; | |
1957 | char **property; | |
1958 | void *u = NULL; | |
1959 | int r; | |
1960 | ||
1961 | assert(bus); | |
dfa92725 | 1962 | assert(prefix); |
992c052c LP |
1963 | assert(path); |
1964 | assert(interface); | |
1965 | ||
1966 | n = hashmap_get(bus->nodes, prefix); | |
1967 | if (!n) | |
1968 | return 0; | |
1969 | ||
992c052c LP |
1970 | r = sd_bus_message_new_signal(bus, path, "org.freedesktop.DBus.Properties", "PropertiesChanged", &m); |
1971 | if (r < 0) | |
1972 | return r; | |
1973 | ||
1974 | r = sd_bus_message_append(m, "s", interface); | |
1975 | if (r < 0) | |
1976 | return r; | |
1977 | ||
1978 | r = sd_bus_message_open_container(m, 'a', "{sv}"); | |
1979 | if (r < 0) | |
1980 | return r; | |
1981 | ||
1982 | key.path = prefix; | |
1983 | key.interface = interface; | |
1984 | ||
718db961 LP |
1985 | LIST_FOREACH(vtables, c, n->vtables) { |
1986 | if (require_fallback && !c->is_fallback) | |
1987 | continue; | |
992c052c | 1988 | |
718db961 | 1989 | if (!streq(c->interface, interface)) |
992c052c | 1990 | continue; |
992c052c | 1991 | |
f00c3121 | 1992 | r = node_vtable_get_userdata(bus, path, c, &u, &error); |
992c052c LP |
1993 | if (r < 0) |
1994 | return r; | |
718db961 LP |
1995 | if (bus->nodes_modified) |
1996 | return 0; | |
1997 | if (r == 0) | |
1998 | continue; | |
992c052c | 1999 | |
718db961 | 2000 | STRV_FOREACH(property, names) { |
718db961 | 2001 | struct vtable_member *v; |
992c052c | 2002 | |
718db961 | 2003 | assert_return(member_name_is_valid(*property), -EINVAL); |
992c052c | 2004 | |
718db961 LP |
2005 | key.member = *property; |
2006 | v = hashmap_get(bus->vtable_properties, &key); | |
2007 | if (!v) | |
2008 | return -ENOENT; | |
2009 | ||
2010 | /* If there are two vtables for the same | |
2011 | * interface, let's handle this property when | |
2012 | * we come to that vtable. */ | |
2013 | if (c != v->parent) | |
2014 | continue; | |
992c052c | 2015 | |
718db961 | 2016 | assert_return(v->vtable->flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE, -EDOM); |
992c052c | 2017 | |
718db961 LP |
2018 | if (v->vtable->flags & SD_BUS_VTABLE_PROPERTY_INVALIDATE_ONLY) { |
2019 | has_invalidating = true; | |
2020 | continue; | |
2021 | } | |
2022 | ||
2023 | has_changing = true; | |
2024 | ||
2025 | r = sd_bus_message_open_container(m, 'e', "sv"); | |
2026 | if (r < 0) | |
2027 | return r; | |
2028 | ||
2029 | r = sd_bus_message_append(m, "s", *property); | |
2030 | if (r < 0) | |
2031 | return r; | |
2032 | ||
2033 | r = sd_bus_message_open_container(m, 'v', v->vtable->x.property.signature); | |
2034 | if (r < 0) | |
2035 | return r; | |
2036 | ||
ebcf1f97 | 2037 | r = invoke_property_get(bus, v->vtable, m->path, interface, *property, m, vtable_property_convert_userdata(v->vtable, u), &error); |
718db961 LP |
2038 | if (r < 0) |
2039 | return r; | |
2040 | if (bus->nodes_modified) | |
2041 | return 0; | |
2042 | ||
2043 | r = sd_bus_message_close_container(m); | |
2044 | if (r < 0) | |
2045 | return r; | |
2046 | ||
2047 | r = sd_bus_message_close_container(m); | |
2048 | if (r < 0) | |
2049 | return r; | |
2050 | } | |
992c052c LP |
2051 | } |
2052 | ||
718db961 LP |
2053 | if (!has_invalidating && !has_changing) |
2054 | return 0; | |
2055 | ||
992c052c LP |
2056 | r = sd_bus_message_close_container(m); |
2057 | if (r < 0) | |
2058 | return r; | |
2059 | ||
2060 | r = sd_bus_message_open_container(m, 'a', "s"); | |
2061 | if (r < 0) | |
2062 | return r; | |
2063 | ||
2064 | if (has_invalidating) { | |
718db961 LP |
2065 | LIST_FOREACH(vtables, c, n->vtables) { |
2066 | if (require_fallback && !c->is_fallback) | |
2067 | continue; | |
992c052c | 2068 | |
718db961 | 2069 | if (!streq(c->interface, interface)) |
992c052c LP |
2070 | continue; |
2071 | ||
f00c3121 | 2072 | r = node_vtable_get_userdata(bus, path, c, &u, &error); |
992c052c LP |
2073 | if (r < 0) |
2074 | return r; | |
718db961 LP |
2075 | if (bus->nodes_modified) |
2076 | return 0; | |
2077 | if (r == 0) | |
2078 | continue; | |
2079 | ||
2080 | STRV_FOREACH(property, names) { | |
2081 | struct vtable_member *v; | |
2082 | ||
2083 | key.member = *property; | |
2084 | assert_se(v = hashmap_get(bus->vtable_properties, &key)); | |
2085 | assert(c == v->parent); | |
2086 | ||
2087 | if (!(v->vtable->flags & SD_BUS_VTABLE_PROPERTY_INVALIDATE_ONLY)) | |
2088 | continue; | |
2089 | ||
2090 | r = sd_bus_message_append(m, "s", *property); | |
2091 | if (r < 0) | |
2092 | return r; | |
2093 | } | |
992c052c LP |
2094 | } |
2095 | } | |
2096 | ||
2097 | r = sd_bus_message_close_container(m); | |
2098 | if (r < 0) | |
2099 | return r; | |
2100 | ||
2101 | r = sd_bus_send(bus, m, NULL); | |
2102 | if (r < 0) | |
2103 | return r; | |
2104 | ||
2105 | return 1; | |
2106 | } | |
2107 | ||
d9f644e2 | 2108 | _public_ int sd_bus_emit_properties_changed_strv( |
dfa92725 LP |
2109 | sd_bus *bus, |
2110 | const char *path, | |
2111 | const char *interface, | |
2112 | char **names) { | |
2113 | ||
8ce2afd6 | 2114 | BUS_DONT_DESTROY(bus); |
92e189e5 | 2115 | char *prefix; |
992c052c LP |
2116 | int r; |
2117 | ||
dfa92725 LP |
2118 | assert_return(bus, -EINVAL); |
2119 | assert_return(object_path_is_valid(path), -EINVAL); | |
2120 | assert_return(interface_name_is_valid(interface), -EINVAL); | |
2121 | assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN); | |
2122 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
2123 | ||
2124 | if (strv_isempty(names)) | |
2125 | return 0; | |
992c052c | 2126 | |
68313d3d LP |
2127 | do { |
2128 | bus->nodes_modified = false; | |
992c052c | 2129 | |
68313d3d | 2130 | r = emit_properties_changed_on_interface(bus, path, path, interface, false, names); |
92e189e5 LP |
2131 | if (r != 0) |
2132 | return r; | |
68313d3d LP |
2133 | if (bus->nodes_modified) |
2134 | continue; | |
2135 | ||
2136 | prefix = alloca(strlen(path) + 1); | |
2137 | OBJECT_PATH_FOREACH_PREFIX(prefix, path) { | |
2138 | r = emit_properties_changed_on_interface(bus, prefix, path, interface, true, names); | |
2139 | if (r != 0) | |
2140 | return r; | |
2141 | if (bus->nodes_modified) | |
2142 | break; | |
2143 | } | |
2144 | ||
2145 | } while (bus->nodes_modified); | |
992c052c LP |
2146 | |
2147 | return -ENOENT; | |
2148 | } | |
2149 | ||
d9f644e2 | 2150 | _public_ int sd_bus_emit_properties_changed( |
dfa92725 LP |
2151 | sd_bus *bus, |
2152 | const char *path, | |
2153 | const char *interface, | |
2154 | const char *name, ...) { | |
2155 | ||
250a918d | 2156 | char **names; |
992c052c | 2157 | |
dfa92725 LP |
2158 | assert_return(bus, -EINVAL); |
2159 | assert_return(object_path_is_valid(path), -EINVAL); | |
2160 | assert_return(interface_name_is_valid(interface), -EINVAL); | |
2161 | assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN); | |
2162 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
2163 | ||
2164 | if (!name) | |
2165 | return 0; | |
2166 | ||
250a918d | 2167 | names = strv_from_stdarg_alloca(name); |
992c052c LP |
2168 | |
2169 | return sd_bus_emit_properties_changed_strv(bus, path, interface, names); | |
2170 | } | |
2171 | ||
4be39163 LP |
2172 | static int interfaces_added_append_one_prefix( |
2173 | sd_bus *bus, | |
2174 | sd_bus_message *m, | |
2175 | const char *prefix, | |
2176 | const char *path, | |
2177 | const char *interface, | |
2178 | bool require_fallback) { | |
2179 | ||
2180 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; | |
718db961 | 2181 | bool found_interface = false; |
4be39163 LP |
2182 | struct node_vtable *c; |
2183 | struct node *n; | |
2184 | void *u = NULL; | |
2185 | int r; | |
2186 | ||
2187 | assert(bus); | |
2188 | assert(m); | |
2189 | assert(prefix); | |
2190 | assert(path); | |
2191 | assert(interface); | |
2192 | ||
2193 | n = hashmap_get(bus->nodes, prefix); | |
2194 | if (!n) | |
2195 | return 0; | |
2196 | ||
2197 | LIST_FOREACH(vtables, c, n->vtables) { | |
2198 | if (require_fallback && !c->is_fallback) | |
2199 | continue; | |
2200 | ||
718db961 LP |
2201 | if (!streq(c->interface, interface)) |
2202 | continue; | |
4be39163 | 2203 | |
f00c3121 | 2204 | r = node_vtable_get_userdata(bus, path, c, &u, &error); |
718db961 LP |
2205 | if (r < 0) |
2206 | return r; | |
2207 | if (bus->nodes_modified) | |
2208 | return 0; | |
2209 | if (r == 0) | |
2210 | continue; | |
4be39163 | 2211 | |
718db961 LP |
2212 | if (!found_interface) { |
2213 | r = sd_bus_message_append_basic(m, 's', interface); | |
2214 | if (r < 0) | |
2215 | return r; | |
4be39163 | 2216 | |
718db961 LP |
2217 | r = sd_bus_message_open_container(m, 'a', "{sv}"); |
2218 | if (r < 0) | |
2219 | return r; | |
4be39163 | 2220 | |
718db961 LP |
2221 | found_interface = true; |
2222 | } | |
4be39163 | 2223 | |
718db961 LP |
2224 | r = vtable_append_all_properties(bus, m, path, c, u, &error); |
2225 | if (r < 0) | |
2226 | return r; | |
2227 | if (bus->nodes_modified) | |
2228 | return 0; | |
2229 | } | |
4be39163 | 2230 | |
718db961 LP |
2231 | if (found_interface) { |
2232 | r = sd_bus_message_close_container(m); | |
2233 | if (r < 0) | |
2234 | return r; | |
2235 | } | |
4be39163 | 2236 | |
718db961 | 2237 | return found_interface; |
4be39163 LP |
2238 | } |
2239 | ||
2240 | static int interfaces_added_append_one( | |
2241 | sd_bus *bus, | |
2242 | sd_bus_message *m, | |
2243 | const char *path, | |
2244 | const char *interface) { | |
2245 | ||
2246 | char *prefix; | |
2247 | int r; | |
2248 | ||
2249 | assert(bus); | |
2250 | assert(m); | |
2251 | assert(path); | |
2252 | assert(interface); | |
2253 | ||
2254 | r = interfaces_added_append_one_prefix(bus, m, path, path, interface, false); | |
2255 | if (r != 0) | |
2256 | return r; | |
68313d3d LP |
2257 | if (bus->nodes_modified) |
2258 | return 0; | |
4be39163 LP |
2259 | |
2260 | prefix = alloca(strlen(path) + 1); | |
2261 | OBJECT_PATH_FOREACH_PREFIX(prefix, path) { | |
2262 | r = interfaces_added_append_one_prefix(bus, m, prefix, path, interface, true); | |
2263 | if (r != 0) | |
2264 | return r; | |
68313d3d LP |
2265 | if (bus->nodes_modified) |
2266 | return 0; | |
4be39163 LP |
2267 | } |
2268 | ||
2269 | return -ENOENT; | |
992c052c LP |
2270 | } |
2271 | ||
d9f644e2 | 2272 | _public_ int sd_bus_emit_interfaces_added_strv(sd_bus *bus, const char *path, char **interfaces) { |
8ce2afd6 LP |
2273 | BUS_DONT_DESTROY(bus); |
2274 | ||
4be39163 LP |
2275 | _cleanup_bus_message_unref_ sd_bus_message *m = NULL; |
2276 | char **i; | |
2277 | int r; | |
2278 | ||
2279 | assert_return(bus, -EINVAL); | |
2280 | assert_return(object_path_is_valid(path), -EINVAL); | |
2281 | assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN); | |
2282 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
2283 | ||
2284 | if (strv_isempty(interfaces)) | |
2285 | return 0; | |
2286 | ||
68313d3d LP |
2287 | do { |
2288 | bus->nodes_modified = false; | |
4be39163 | 2289 | |
68313d3d LP |
2290 | if (m) |
2291 | m = sd_bus_message_unref(m); | |
4be39163 | 2292 | |
68313d3d LP |
2293 | r = sd_bus_message_new_signal(bus, path, "org.freedesktop.DBus.ObjectManager", "InterfacesAdded", &m); |
2294 | if (r < 0) | |
2295 | return r; | |
4be39163 | 2296 | |
68313d3d | 2297 | r = sd_bus_message_append_basic(m, 'o', path); |
4be39163 LP |
2298 | if (r < 0) |
2299 | return r; | |
2300 | ||
68313d3d | 2301 | r = sd_bus_message_open_container(m, 'a', "{sa{sv}}"); |
4be39163 LP |
2302 | if (r < 0) |
2303 | return r; | |
2304 | ||
68313d3d LP |
2305 | STRV_FOREACH(i, interfaces) { |
2306 | assert_return(interface_name_is_valid(*i), -EINVAL); | |
2307 | ||
2308 | r = sd_bus_message_open_container(m, 'e', "sa{sv}"); | |
2309 | if (r < 0) | |
2310 | return r; | |
2311 | ||
2312 | r = interfaces_added_append_one(bus, m, path, *i); | |
2313 | if (r < 0) | |
2314 | return r; | |
2315 | ||
2316 | if (bus->nodes_modified) | |
2317 | break; | |
2318 | ||
2319 | r = sd_bus_message_close_container(m); | |
2320 | if (r < 0) | |
2321 | return r; | |
2322 | } | |
2323 | ||
2324 | if (bus->nodes_modified) | |
2325 | continue; | |
2326 | ||
4be39163 LP |
2327 | r = sd_bus_message_close_container(m); |
2328 | if (r < 0) | |
2329 | return r; | |
4be39163 | 2330 | |
68313d3d | 2331 | } while (bus->nodes_modified); |
4be39163 LP |
2332 | |
2333 | return sd_bus_send(bus, m, NULL); | |
2334 | } | |
2335 | ||
d9f644e2 | 2336 | _public_ int sd_bus_emit_interfaces_added(sd_bus *bus, const char *path, const char *interface, ...) { |
250a918d | 2337 | char **interfaces; |
4be39163 LP |
2338 | |
2339 | assert_return(bus, -EINVAL); | |
2340 | assert_return(object_path_is_valid(path), -EINVAL); | |
2341 | assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN); | |
2342 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
2343 | ||
250a918d | 2344 | interfaces = strv_from_stdarg_alloca(interface); |
4be39163 LP |
2345 | |
2346 | return sd_bus_emit_interfaces_added_strv(bus, path, interfaces); | |
2347 | } | |
2348 | ||
d9f644e2 | 2349 | _public_ int sd_bus_emit_interfaces_removed_strv(sd_bus *bus, const char *path, char **interfaces) { |
4be39163 LP |
2350 | _cleanup_bus_message_unref_ sd_bus_message *m = NULL; |
2351 | int r; | |
2352 | ||
2353 | assert_return(bus, -EINVAL); | |
2354 | assert_return(object_path_is_valid(path), -EINVAL); | |
2355 | assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN); | |
2356 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
2357 | ||
2358 | if (strv_isempty(interfaces)) | |
2359 | return 0; | |
2360 | ||
2361 | r = sd_bus_message_new_signal(bus, path, "org.freedesktop.DBus.ObjectManager", "InterfacesRemoved", &m); | |
2362 | if (r < 0) | |
2363 | return r; | |
2364 | ||
2365 | r = sd_bus_message_append_basic(m, 'o', path); | |
2366 | if (r < 0) | |
2367 | return r; | |
2368 | ||
2369 | r = sd_bus_message_append_strv(m, interfaces); | |
2370 | if (r < 0) | |
2371 | return r; | |
2372 | ||
2373 | return sd_bus_send(bus, m, NULL); | |
2374 | } | |
2375 | ||
d9f644e2 | 2376 | _public_ int sd_bus_emit_interfaces_removed(sd_bus *bus, const char *path, const char *interface, ...) { |
250a918d | 2377 | char **interfaces; |
4be39163 LP |
2378 | |
2379 | assert_return(bus, -EINVAL); | |
2380 | assert_return(object_path_is_valid(path), -EINVAL); | |
2381 | assert_return(BUS_IS_OPEN(bus->state), -ENOTCONN); | |
2382 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
2383 | ||
250a918d | 2384 | interfaces = strv_from_stdarg_alloca(interface); |
4be39163 LP |
2385 | |
2386 | return sd_bus_emit_interfaces_removed_strv(bus, path, interfaces); | |
992c052c LP |
2387 | } |
2388 | ||
d9f644e2 | 2389 | _public_ int sd_bus_add_object_manager(sd_bus *bus, const char *path) { |
992c052c LP |
2390 | struct node *n; |
2391 | ||
dfa92725 LP |
2392 | assert_return(bus, -EINVAL); |
2393 | assert_return(object_path_is_valid(path), -EINVAL); | |
2394 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
992c052c LP |
2395 | |
2396 | n = bus_node_allocate(bus, path); | |
2397 | if (!n) | |
2398 | return -ENOMEM; | |
2399 | ||
2400 | n->object_manager = true; | |
68313d3d | 2401 | bus->nodes_modified = true; |
992c052c LP |
2402 | return 0; |
2403 | } | |
2404 | ||
d9f644e2 | 2405 | _public_ int sd_bus_remove_object_manager(sd_bus *bus, const char *path) { |
992c052c LP |
2406 | struct node *n; |
2407 | ||
dfa92725 LP |
2408 | assert_return(bus, -EINVAL); |
2409 | assert_return(object_path_is_valid(path), -EINVAL); | |
2410 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
992c052c LP |
2411 | |
2412 | n = hashmap_get(bus->nodes, path); | |
2413 | if (!n) | |
2414 | return 0; | |
2415 | ||
2416 | if (!n->object_manager) | |
2417 | return 0; | |
2418 | ||
2419 | n->object_manager = false; | |
68313d3d | 2420 | bus->nodes_modified = true; |
992c052c | 2421 | bus_node_gc(bus, n); |
dfa92725 | 2422 | |
992c052c LP |
2423 | return 1; |
2424 | } |