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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" | |
40ca29a1 | 31 | #include "bus-util.h" |
19befb2d LP |
32 | #include "bus-slot.h" |
33 | #include "bus-objects.h" | |
992c052c LP |
34 | |
35 | static int node_vtable_get_userdata( | |
36 | sd_bus *bus, | |
37 | const char *path, | |
38 | struct node_vtable *c, | |
f00c3121 LP |
39 | void **userdata, |
40 | sd_bus_error *error) { | |
992c052c | 41 | |
19befb2d | 42 | sd_bus_slot *s; |
992c052c LP |
43 | void *u; |
44 | int r; | |
45 | ||
46 | assert(bus); | |
47 | assert(path); | |
48 | assert(c); | |
49 | ||
19befb2d LP |
50 | s = container_of(c, sd_bus_slot, node_vtable); |
51 | u = s->userdata; | |
992c052c | 52 | if (c->find) { |
19befb2d | 53 | bus->current_slot = s; |
f00c3121 | 54 | r = c->find(bus, path, c->interface, u, &u, error); |
19befb2d LP |
55 | bus->current_slot = NULL; |
56 | ||
f00c3121 LP |
57 | if (r < 0) |
58 | return r; | |
59 | if (sd_bus_error_is_set(error)) | |
5958d089 | 60 | return -sd_bus_error_get_errno(error); |
f00c3121 | 61 | if (r == 0) |
992c052c LP |
62 | return r; |
63 | } | |
64 | ||
65 | if (userdata) | |
66 | *userdata = u; | |
67 | ||
68 | return 1; | |
69 | } | |
70 | ||
71 | static void *vtable_property_convert_userdata(const sd_bus_vtable *p, void *u) { | |
72 | assert(p); | |
73 | ||
77a874a3 | 74 | return (uint8_t*) u + p->x.property.offset; |
992c052c LP |
75 | } |
76 | ||
77 | static int vtable_property_get_userdata( | |
78 | sd_bus *bus, | |
79 | const char *path, | |
80 | struct vtable_member *p, | |
f00c3121 LP |
81 | void **userdata, |
82 | sd_bus_error *error) { | |
992c052c LP |
83 | |
84 | void *u; | |
85 | int r; | |
86 | ||
87 | assert(bus); | |
88 | assert(path); | |
89 | assert(p); | |
90 | assert(userdata); | |
91 | ||
f00c3121 | 92 | r = node_vtable_get_userdata(bus, path, p->parent, &u, error); |
992c052c LP |
93 | if (r <= 0) |
94 | return r; | |
68313d3d LP |
95 | if (bus->nodes_modified) |
96 | return 0; | |
992c052c LP |
97 | |
98 | *userdata = vtable_property_convert_userdata(p->vtable, u); | |
99 | return 1; | |
100 | } | |
101 | ||
dfa92725 LP |
102 | static int add_enumerated_to_set( |
103 | sd_bus *bus, | |
104 | const char *prefix, | |
105 | struct node_enumerator *first, | |
f00c3121 LP |
106 | Set *s, |
107 | sd_bus_error *error) { | |
dfa92725 | 108 | |
992c052c LP |
109 | struct node_enumerator *c; |
110 | int r; | |
111 | ||
112 | assert(bus); | |
113 | assert(prefix); | |
114 | assert(s); | |
115 | ||
116 | LIST_FOREACH(enumerators, c, first) { | |
117 | char **children = NULL, **k; | |
118 | ||
68313d3d LP |
119 | if (bus->nodes_modified) |
120 | return 0; | |
121 | ||
19befb2d LP |
122 | bus->current_slot = container_of(c, sd_bus_slot, node_enumerator); |
123 | r = c->callback(bus, prefix, bus->current_slot->userdata, &children, error); | |
124 | bus->current_slot = NULL; | |
125 | ||
992c052c LP |
126 | if (r < 0) |
127 | return r; | |
f00c3121 | 128 | if (sd_bus_error_is_set(error)) |
5958d089 | 129 | return -sd_bus_error_get_errno(error); |
992c052c LP |
130 | |
131 | STRV_FOREACH(k, children) { | |
132 | if (r < 0) { | |
133 | free(*k); | |
134 | continue; | |
135 | } | |
136 | ||
5d66866d | 137 | if (!object_path_is_valid(*k)){ |
992c052c LP |
138 | free(*k); |
139 | r = -EINVAL; | |
140 | continue; | |
141 | } | |
142 | ||
5d66866d LP |
143 | if (!object_path_startswith(*k, prefix)) { |
144 | free(*k); | |
145 | continue; | |
146 | } | |
147 | ||
992c052c | 148 | r = set_consume(s, *k); |
52c7f2b2 LP |
149 | if (r == -EEXIST) |
150 | r = 0; | |
992c052c LP |
151 | } |
152 | ||
153 | free(children); | |
154 | if (r < 0) | |
155 | return r; | |
156 | } | |
157 | ||
158 | return 0; | |
159 | } | |
160 | ||
dfa92725 LP |
161 | static int add_subtree_to_set( |
162 | sd_bus *bus, | |
163 | const char *prefix, | |
164 | struct node *n, | |
f00c3121 LP |
165 | Set *s, |
166 | sd_bus_error *error) { | |
dfa92725 | 167 | |
992c052c LP |
168 | struct node *i; |
169 | int r; | |
170 | ||
171 | assert(bus); | |
172 | assert(prefix); | |
173 | assert(n); | |
174 | assert(s); | |
175 | ||
f00c3121 | 176 | r = add_enumerated_to_set(bus, prefix, n->enumerators, s, error); |
992c052c LP |
177 | if (r < 0) |
178 | return r; | |
68313d3d LP |
179 | if (bus->nodes_modified) |
180 | return 0; | |
992c052c LP |
181 | |
182 | LIST_FOREACH(siblings, i, n->child) { | |
183 | char *t; | |
184 | ||
5d66866d LP |
185 | if (!object_path_startswith(i->path, prefix)) |
186 | continue; | |
187 | ||
992c052c LP |
188 | t = strdup(i->path); |
189 | if (!t) | |
190 | return -ENOMEM; | |
191 | ||
192 | r = set_consume(s, t); | |
193 | if (r < 0 && r != -EEXIST) | |
194 | return r; | |
195 | ||
f00c3121 | 196 | r = add_subtree_to_set(bus, prefix, i, s, error); |
992c052c LP |
197 | if (r < 0) |
198 | return r; | |
68313d3d LP |
199 | if (bus->nodes_modified) |
200 | return 0; | |
992c052c LP |
201 | } |
202 | ||
203 | return 0; | |
204 | } | |
205 | ||
dfa92725 LP |
206 | static int get_child_nodes( |
207 | sd_bus *bus, | |
208 | const char *prefix, | |
209 | struct node *n, | |
f00c3121 LP |
210 | Set **_s, |
211 | sd_bus_error *error) { | |
dfa92725 | 212 | |
992c052c LP |
213 | Set *s = NULL; |
214 | int r; | |
215 | ||
216 | assert(bus); | |
dfa92725 | 217 | assert(prefix); |
992c052c LP |
218 | assert(n); |
219 | assert(_s); | |
220 | ||
221 | s = set_new(string_hash_func, string_compare_func); | |
222 | if (!s) | |
223 | return -ENOMEM; | |
224 | ||
f00c3121 | 225 | r = add_subtree_to_set(bus, prefix, n, s, error); |
992c052c LP |
226 | if (r < 0) { |
227 | set_free_free(s); | |
228 | return r; | |
229 | } | |
230 | ||
231 | *_s = s; | |
232 | return 0; | |
233 | } | |
234 | ||
235 | static int node_callbacks_run( | |
236 | sd_bus *bus, | |
237 | sd_bus_message *m, | |
238 | struct node_callback *first, | |
239 | bool require_fallback, | |
240 | bool *found_object) { | |
241 | ||
242 | struct node_callback *c; | |
243 | int r; | |
244 | ||
245 | assert(bus); | |
246 | assert(m); | |
247 | assert(found_object); | |
248 | ||
249 | LIST_FOREACH(callbacks, c, first) { | |
ebcf1f97 LP |
250 | _cleanup_bus_error_free_ sd_bus_error error_buffer = SD_BUS_ERROR_NULL; |
251 | ||
68313d3d LP |
252 | if (bus->nodes_modified) |
253 | return 0; | |
254 | ||
992c052c LP |
255 | if (require_fallback && !c->is_fallback) |
256 | continue; | |
257 | ||
258 | *found_object = true; | |
259 | ||
260 | if (c->last_iteration == bus->iteration_counter) | |
261 | continue; | |
262 | ||
68313d3d LP |
263 | c->last_iteration = bus->iteration_counter; |
264 | ||
992c052c LP |
265 | r = sd_bus_message_rewind(m, true); |
266 | if (r < 0) | |
267 | return r; | |
268 | ||
19befb2d LP |
269 | bus->current_slot = container_of(c, sd_bus_slot, node_callback); |
270 | r = c->callback(bus, m, bus->current_slot->userdata, &error_buffer); | |
271 | bus->current_slot = NULL; | |
272 | ||
ebcf1f97 | 273 | r = bus_maybe_reply_error(m, r, &error_buffer); |
992c052c LP |
274 | if (r != 0) |
275 | return r; | |
276 | } | |
277 | ||
278 | return 0; | |
279 | } | |
280 | ||
adacb957 LP |
281 | #define CAPABILITY_SHIFT(x) (((x) >> __builtin_ctzll(_SD_BUS_VTABLE_CAPABILITY_MASK)) & 0xFFFF) |
282 | ||
283 | static int check_access(sd_bus *bus, sd_bus_message *m, struct vtable_member *c, sd_bus_error *error) { | |
284 | _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL; | |
285 | uint64_t cap; | |
286 | uid_t uid; | |
287 | int r; | |
288 | ||
289 | assert(bus); | |
290 | assert(m); | |
291 | assert(c); | |
292 | ||
293 | /* If the entire bus is trusted let's grant access */ | |
294 | if (bus->trusted) | |
295 | return 0; | |
296 | ||
297 | /* If the member is marked UNPRIVILEGED let's grant access */ | |
298 | if (c->vtable->flags & SD_BUS_VTABLE_UNPRIVILEGED) | |
299 | return 0; | |
300 | ||
301 | /* If we are not connected to kdbus we cannot retrieve the | |
302 | * effective capability set without race. Since we need this | |
303 | * for a security decision we cannot use racy data, hence | |
304 | * don't request it. */ | |
305 | if (bus->is_kernel) | |
306 | r = sd_bus_query_sender_creds(m, SD_BUS_CREDS_UID|SD_BUS_CREDS_EFFECTIVE_CAPS, &creds); | |
307 | else | |
308 | r = sd_bus_query_sender_creds(m, SD_BUS_CREDS_UID, &creds); | |
309 | if (r < 0) | |
310 | return r; | |
311 | ||
312 | /* Check have the caller has the requested capability | |
313 | * set. Note that the flags value contains the capability | |
314 | * number plus one, which we need to subtract here. We do this | |
315 | * so that we have 0 as special value for "default | |
316 | * capability". */ | |
317 | cap = CAPABILITY_SHIFT(c->vtable->flags); | |
318 | if (cap == 0) | |
319 | cap = CAPABILITY_SHIFT(c->parent->vtable[0].flags); | |
320 | if (cap == 0) | |
321 | cap = CAP_SYS_ADMIN; | |
322 | else | |
323 | cap --; | |
324 | ||
325 | r = sd_bus_creds_has_effective_cap(creds, cap); | |
326 | if (r > 0) | |
327 | return 1; | |
328 | ||
329 | /* Caller has same UID as us, then let's grant access */ | |
330 | r = sd_bus_creds_get_uid(creds, &uid); | |
331 | if (r >= 0) { | |
332 | if (uid == getuid()) | |
333 | return 1; | |
334 | } | |
335 | ||
336 | return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Access to %s.%s() not permitted.", c->interface, c->member); | |
337 | } | |
338 | ||
992c052c LP |
339 | static int method_callbacks_run( |
340 | sd_bus *bus, | |
341 | sd_bus_message *m, | |
342 | struct vtable_member *c, | |
343 | bool require_fallback, | |
344 | bool *found_object) { | |
345 | ||
f00c3121 | 346 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
992c052c LP |
347 | const char *signature; |
348 | void *u; | |
349 | int r; | |
350 | ||
351 | assert(bus); | |
352 | assert(m); | |
353 | assert(c); | |
354 | assert(found_object); | |
355 | ||
356 | if (require_fallback && !c->parent->is_fallback) | |
357 | return 0; | |
358 | ||
adacb957 LP |
359 | r = check_access(bus, m, c, &error); |
360 | if (r < 0) | |
361 | return bus_maybe_reply_error(m, r, &error); | |
362 | ||
f00c3121 | 363 | r = node_vtable_get_userdata(bus, m->path, c->parent, &u, &error); |
992c052c | 364 | if (r <= 0) |
f00c3121 | 365 | return bus_maybe_reply_error(m, r, &error); |
68313d3d LP |
366 | if (bus->nodes_modified) |
367 | return 0; | |
992c052c LP |
368 | |
369 | *found_object = true; | |
370 | ||
68313d3d LP |
371 | if (c->last_iteration == bus->iteration_counter) |
372 | return 0; | |
373 | ||
374 | c->last_iteration = bus->iteration_counter; | |
375 | ||
992c052c LP |
376 | r = sd_bus_message_rewind(m, true); |
377 | if (r < 0) | |
378 | return r; | |
379 | ||
40ca29a1 LP |
380 | signature = sd_bus_message_get_signature(m, true); |
381 | if (!signature) | |
382 | return -EINVAL; | |
992c052c | 383 | |
f00c3121 | 384 | if (!streq(strempty(c->vtable->x.method.signature), signature)) |
86b8d289 LP |
385 | return sd_bus_reply_method_errorf( |
386 | m, | |
387 | SD_BUS_ERROR_INVALID_ARGS, | |
388 | "Invalid arguments '%s' to call %s.%s(), expecting '%s'.", | |
389 | signature, c->interface, c->member, strempty(c->vtable->x.method.signature)); | |
992c052c | 390 | |
6717d473 LP |
391 | /* Keep track what the signature of the reply to this message |
392 | * should be, so that this can be enforced when sealing the | |
393 | * reply. */ | |
394 | m->enforced_reply_signature = strempty(c->vtable->x.method.result); | |
395 | ||
ebcf1f97 | 396 | if (c->vtable->x.method.handler) { |
19befb2d LP |
397 | |
398 | bus->current_slot = container_of(c->parent, sd_bus_slot, node_vtable); | |
f00c3121 | 399 | r = c->vtable->x.method.handler(bus, m, u, &error); |
19befb2d LP |
400 | bus->current_slot = NULL; |
401 | ||
f00c3121 | 402 | return bus_maybe_reply_error(m, r, &error); |
ebcf1f97 | 403 | } |
992c052c LP |
404 | |
405 | /* If the method callback is NULL, make this a successful NOP */ | |
df2d202e | 406 | r = sd_bus_reply_method_return(m, NULL); |
992c052c LP |
407 | if (r < 0) |
408 | return r; | |
409 | ||
410 | return 1; | |
411 | } | |
412 | ||
413 | static int invoke_property_get( | |
414 | sd_bus *bus, | |
19befb2d | 415 | sd_bus_slot *slot, |
992c052c LP |
416 | const sd_bus_vtable *v, |
417 | const char *path, | |
418 | const char *interface, | |
419 | const char *property, | |
ebcf1f97 LP |
420 | sd_bus_message *reply, |
421 | void *userdata, | |
422 | sd_bus_error *error) { | |
992c052c | 423 | |
af8601fa | 424 | const void *p; |
f00c3121 | 425 | int r; |
992c052c LP |
426 | |
427 | assert(bus); | |
19befb2d | 428 | assert(slot); |
992c052c | 429 | assert(v); |
dfa92725 LP |
430 | assert(path); |
431 | assert(interface); | |
432 | assert(property); | |
ebcf1f97 | 433 | assert(reply); |
992c052c | 434 | |
f00c3121 | 435 | if (v->x.property.get) { |
19befb2d LP |
436 | |
437 | bus->current_slot = slot; | |
f00c3121 | 438 | r = v->x.property.get(bus, path, interface, property, reply, userdata, error); |
19befb2d LP |
439 | bus->current_slot = NULL; |
440 | ||
f00c3121 LP |
441 | if (r < 0) |
442 | return r; | |
443 | if (sd_bus_error_is_set(error)) | |
5958d089 | 444 | return -sd_bus_error_get_errno(error); |
f00c3121 LP |
445 | return r; |
446 | } | |
992c052c LP |
447 | |
448 | /* Automatic handling if no callback is defined. */ | |
449 | ||
c13c7de3 | 450 | if (streq(v->x.property.signature, "as")) |
ebcf1f97 | 451 | return sd_bus_message_append_strv(reply, *(char***) userdata); |
c13c7de3 | 452 | |
77a874a3 LP |
453 | assert(signature_is_single(v->x.property.signature, false)); |
454 | assert(bus_type_is_basic(v->x.property.signature[0])); | |
992c052c | 455 | |
77a874a3 | 456 | switch (v->x.property.signature[0]) { |
992c052c LP |
457 | |
458 | case SD_BUS_TYPE_STRING: | |
28d6633a LP |
459 | case SD_BUS_TYPE_SIGNATURE: |
460 | p = strempty(*(char**) userdata); | |
af8601fa KS |
461 | break; |
462 | ||
992c052c | 463 | case SD_BUS_TYPE_OBJECT_PATH: |
992c052c | 464 | p = *(char**) userdata; |
28d6633a | 465 | assert(p); |
992c052c LP |
466 | break; |
467 | ||
468 | default: | |
469 | p = userdata; | |
470 | break; | |
471 | } | |
472 | ||
ebcf1f97 | 473 | return sd_bus_message_append_basic(reply, v->x.property.signature[0], p); |
992c052c LP |
474 | } |
475 | ||
476 | static int invoke_property_set( | |
477 | sd_bus *bus, | |
19befb2d | 478 | sd_bus_slot *slot, |
992c052c LP |
479 | const sd_bus_vtable *v, |
480 | const char *path, | |
481 | const char *interface, | |
482 | const char *property, | |
483 | sd_bus_message *value, | |
ebcf1f97 LP |
484 | void *userdata, |
485 | sd_bus_error *error) { | |
992c052c LP |
486 | |
487 | int r; | |
488 | ||
489 | assert(bus); | |
19befb2d | 490 | assert(slot); |
992c052c | 491 | assert(v); |
dfa92725 LP |
492 | assert(path); |
493 | assert(interface); | |
494 | assert(property); | |
495 | assert(value); | |
992c052c | 496 | |
f00c3121 | 497 | if (v->x.property.set) { |
19befb2d LP |
498 | |
499 | bus->current_slot = slot; | |
f00c3121 | 500 | r = v->x.property.set(bus, path, interface, property, value, userdata, error); |
19befb2d LP |
501 | bus->current_slot = NULL; |
502 | ||
f00c3121 LP |
503 | if (r < 0) |
504 | return r; | |
505 | if (sd_bus_error_is_set(error)) | |
5958d089 | 506 | return -sd_bus_error_get_errno(error); |
f00c3121 LP |
507 | return r; |
508 | } | |
992c052c LP |
509 | |
510 | /* Automatic handling if no callback is defined. */ | |
511 | ||
77a874a3 LP |
512 | assert(signature_is_single(v->x.property.signature, false)); |
513 | assert(bus_type_is_basic(v->x.property.signature[0])); | |
992c052c | 514 | |
77a874a3 | 515 | switch (v->x.property.signature[0]) { |
992c052c LP |
516 | |
517 | case SD_BUS_TYPE_STRING: | |
518 | case SD_BUS_TYPE_OBJECT_PATH: | |
519 | case SD_BUS_TYPE_SIGNATURE: { | |
520 | const char *p; | |
521 | char *n; | |
522 | ||
77a874a3 | 523 | r = sd_bus_message_read_basic(value, v->x.property.signature[0], &p); |
992c052c LP |
524 | if (r < 0) |
525 | return r; | |
526 | ||
527 | n = strdup(p); | |
528 | if (!n) | |
529 | return -ENOMEM; | |
530 | ||
531 | free(*(char**) userdata); | |
532 | *(char**) userdata = n; | |
533 | ||
534 | break; | |
535 | } | |
536 | ||
537 | default: | |
77a874a3 | 538 | r = sd_bus_message_read_basic(value, v->x.property.signature[0], userdata); |
992c052c LP |
539 | if (r < 0) |
540 | return r; | |
541 | ||
542 | break; | |
543 | } | |
544 | ||
545 | return 1; | |
546 | } | |
547 | ||
548 | static int property_get_set_callbacks_run( | |
549 | sd_bus *bus, | |
550 | sd_bus_message *m, | |
551 | struct vtable_member *c, | |
552 | bool require_fallback, | |
553 | bool is_get, | |
554 | bool *found_object) { | |
555 | ||
992c052c | 556 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
ebcf1f97 | 557 | _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; |
19befb2d | 558 | sd_bus_slot *slot; |
c94d7fc3 | 559 | void *u = NULL; |
992c052c LP |
560 | int r; |
561 | ||
562 | assert(bus); | |
563 | assert(m); | |
dfa92725 | 564 | assert(c); |
992c052c LP |
565 | assert(found_object); |
566 | ||
567 | if (require_fallback && !c->parent->is_fallback) | |
568 | return 0; | |
569 | ||
f00c3121 | 570 | r = vtable_property_get_userdata(bus, m->path, c, &u, &error); |
992c052c | 571 | if (r <= 0) |
f00c3121 | 572 | return bus_maybe_reply_error(m, r, &error); |
68313d3d LP |
573 | if (bus->nodes_modified) |
574 | return 0; | |
992c052c | 575 | |
19befb2d LP |
576 | slot = container_of(c->parent, sd_bus_slot, node_vtable); |
577 | ||
992c052c LP |
578 | *found_object = true; |
579 | ||
df2d202e | 580 | r = sd_bus_message_new_method_return(m, &reply); |
992c052c LP |
581 | if (r < 0) |
582 | return r; | |
583 | ||
992c052c | 584 | if (is_get) { |
68313d3d LP |
585 | /* Note that we do not protect against reexecution |
586 | * here (using the last_iteration check, see below), | |
587 | * should the node tree have changed and we got called | |
588 | * again. We assume that property Get() calls are | |
589 | * ultimately without side-effects or if they aren't | |
590 | * then at least idempotent. */ | |
591 | ||
77a874a3 | 592 | r = sd_bus_message_open_container(reply, 'v', c->vtable->x.property.signature); |
992c052c LP |
593 | if (r < 0) |
594 | return r; | |
595 | ||
adacb957 LP |
596 | /* Note that we do not do an access check here. Read |
597 | * access to properties is always unrestricted, since | |
598 | * PropertiesChanged signals broadcast contents | |
599 | * anyway. */ | |
600 | ||
19befb2d | 601 | r = invoke_property_get(bus, slot, c->vtable, m->path, c->interface, c->member, reply, u, &error); |
992c052c | 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_close_container(reply); |
609 | if (r < 0) | |
610 | return r; | |
611 | ||
612 | } else { | |
613 | if (c->vtable->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY) | |
ebcf1f97 | 614 | return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_PROPERTY_READ_ONLY, "Property '%s' is not writable.", c->member); |
68313d3d | 615 | |
ebcf1f97 LP |
616 | /* Avoid that we call the set routine more than once |
617 | * if the processing of this message got restarted | |
618 | * because the node tree changed. */ | |
619 | if (c->last_iteration == bus->iteration_counter) | |
620 | return 0; | |
992c052c | 621 | |
ebcf1f97 | 622 | c->last_iteration = bus->iteration_counter; |
992c052c | 623 | |
ebcf1f97 LP |
624 | r = sd_bus_message_enter_container(m, 'v', c->vtable->x.property.signature); |
625 | if (r < 0) | |
626 | return r; | |
992c052c | 627 | |
adacb957 LP |
628 | r = check_access(bus, m, c, &error); |
629 | if (r < 0) | |
630 | return bus_maybe_reply_error(m, r, &error); | |
631 | ||
19befb2d | 632 | r = invoke_property_set(bus, slot, c->vtable, m->path, c->interface, c->member, m, u, &error); |
ebcf1f97 | 633 | if (r < 0) |
f00c3121 | 634 | return bus_maybe_reply_error(m, r, &error); |
992c052c | 635 | |
68313d3d LP |
636 | if (bus->nodes_modified) |
637 | return 0; | |
638 | ||
992c052c LP |
639 | r = sd_bus_message_exit_container(m); |
640 | if (r < 0) | |
641 | return r; | |
642 | } | |
643 | ||
644 | r = sd_bus_send(bus, reply, NULL); | |
645 | if (r < 0) | |
646 | return r; | |
647 | ||
648 | return 1; | |
649 | } | |
650 | ||
a03e4337 LP |
651 | static int vtable_append_one_property( |
652 | sd_bus *bus, | |
653 | sd_bus_message *reply, | |
654 | const char *path, | |
655 | struct node_vtable *c, | |
656 | const sd_bus_vtable *v, | |
657 | void *userdata, | |
658 | sd_bus_error *error) { | |
659 | ||
19befb2d | 660 | sd_bus_slot *slot; |
a03e4337 LP |
661 | int r; |
662 | ||
663 | assert(bus); | |
664 | assert(reply); | |
665 | assert(path); | |
666 | assert(c); | |
667 | assert(v); | |
668 | ||
669 | r = sd_bus_message_open_container(reply, 'e', "sv"); | |
670 | if (r < 0) | |
671 | return r; | |
672 | ||
673 | r = sd_bus_message_append(reply, "s", v->x.property.member); | |
674 | if (r < 0) | |
675 | return r; | |
676 | ||
677 | r = sd_bus_message_open_container(reply, 'v', v->x.property.signature); | |
678 | if (r < 0) | |
679 | return r; | |
680 | ||
19befb2d LP |
681 | slot = container_of(c, sd_bus_slot, node_vtable); |
682 | ||
683 | r = invoke_property_get(bus, slot, v, path, c->interface, v->x.property.member, reply, vtable_property_convert_userdata(v, userdata), error); | |
a03e4337 LP |
684 | if (r < 0) |
685 | return r; | |
686 | if (bus->nodes_modified) | |
687 | return 0; | |
688 | ||
689 | r = sd_bus_message_close_container(reply); | |
690 | if (r < 0) | |
691 | return r; | |
692 | ||
693 | r = sd_bus_message_close_container(reply); | |
694 | if (r < 0) | |
695 | return r; | |
696 | ||
697 | return 0; | |
698 | } | |
699 | ||
992c052c LP |
700 | static int vtable_append_all_properties( |
701 | sd_bus *bus, | |
702 | sd_bus_message *reply, | |
703 | const char *path, | |
704 | struct node_vtable *c, | |
705 | void *userdata, | |
706 | sd_bus_error *error) { | |
707 | ||
708 | const sd_bus_vtable *v; | |
709 | int r; | |
710 | ||
711 | assert(bus); | |
712 | assert(reply); | |
dfa92725 | 713 | assert(path); |
992c052c LP |
714 | assert(c); |
715 | ||
6e8df5f0 LP |
716 | if (c->vtable[0].flags & SD_BUS_VTABLE_HIDDEN) |
717 | return 1; | |
718 | ||
992c052c LP |
719 | for (v = c->vtable+1; v->type != _SD_BUS_VTABLE_END; v++) { |
720 | if (v->type != _SD_BUS_VTABLE_PROPERTY && v->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY) | |
721 | continue; | |
722 | ||
6e8df5f0 LP |
723 | if (v->flags & SD_BUS_VTABLE_HIDDEN) |
724 | continue; | |
725 | ||
a03e4337 | 726 | r = vtable_append_one_property(bus, reply, path, c, v, userdata, error); |
f00c3121 LP |
727 | if (r < 0) |
728 | return r; | |
68313d3d LP |
729 | if (bus->nodes_modified) |
730 | return 0; | |
992c052c LP |
731 | } |
732 | ||
733 | return 1; | |
734 | } | |
735 | ||
736 | static int property_get_all_callbacks_run( | |
737 | sd_bus *bus, | |
738 | sd_bus_message *m, | |
739 | struct node_vtable *first, | |
740 | bool require_fallback, | |
741 | const char *iface, | |
742 | bool *found_object) { | |
743 | ||
744 | _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; | |
745 | struct node_vtable *c; | |
bd037038 | 746 | bool found_interface; |
992c052c LP |
747 | int r; |
748 | ||
749 | assert(bus); | |
750 | assert(m); | |
751 | assert(found_object); | |
752 | ||
df2d202e | 753 | r = sd_bus_message_new_method_return(m, &reply); |
992c052c LP |
754 | if (r < 0) |
755 | return r; | |
756 | ||
757 | r = sd_bus_message_open_container(reply, 'a', "{sv}"); | |
758 | if (r < 0) | |
759 | return r; | |
760 | ||
38911893 | 761 | found_interface = !iface || |
bd037038 LP |
762 | streq(iface, "org.freedesktop.DBus.Properties") || |
763 | streq(iface, "org.freedesktop.DBus.Peer") || | |
764 | streq(iface, "org.freedesktop.DBus.Introspectable"); | |
765 | ||
992c052c LP |
766 | LIST_FOREACH(vtables, c, first) { |
767 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; | |
768 | void *u; | |
769 | ||
770 | if (require_fallback && !c->is_fallback) | |
771 | continue; | |
772 | ||
f00c3121 | 773 | r = node_vtable_get_userdata(bus, m->path, c, &u, &error); |
992c052c | 774 | if (r < 0) |
f00c3121 | 775 | return bus_maybe_reply_error(m, r, &error); |
68313d3d LP |
776 | if (bus->nodes_modified) |
777 | return 0; | |
992c052c LP |
778 | if (r == 0) |
779 | continue; | |
780 | ||
781 | *found_object = true; | |
782 | ||
783 | if (iface && !streq(c->interface, iface)) | |
784 | continue; | |
785 | found_interface = true; | |
786 | ||
992c052c LP |
787 | r = vtable_append_all_properties(bus, reply, m->path, c, u, &error); |
788 | if (r < 0) | |
f00c3121 | 789 | return bus_maybe_reply_error(m, r, &error); |
68313d3d LP |
790 | if (bus->nodes_modified) |
791 | return 0; | |
992c052c LP |
792 | } |
793 | ||
794 | if (!found_interface) { | |
795 | r = sd_bus_reply_method_errorf( | |
df2d202e | 796 | m, |
40ca29a1 | 797 | SD_BUS_ERROR_UNKNOWN_INTERFACE, |
992c052c LP |
798 | "Unknown interface '%s'.", iface); |
799 | if (r < 0) | |
800 | return r; | |
801 | ||
802 | return 1; | |
803 | } | |
804 | ||
805 | r = sd_bus_message_close_container(reply); | |
806 | if (r < 0) | |
807 | return r; | |
808 | ||
809 | r = sd_bus_send(bus, reply, NULL); | |
810 | if (r < 0) | |
811 | return r; | |
812 | ||
813 | return 1; | |
814 | } | |
815 | ||
816 | static bool bus_node_with_object_manager(sd_bus *bus, struct node *n) { | |
817 | assert(bus); | |
dfa92725 | 818 | assert(n); |
992c052c | 819 | |
19befb2d | 820 | if (n->object_managers) |
992c052c LP |
821 | return true; |
822 | ||
823 | if (n->parent) | |
824 | return bus_node_with_object_manager(bus, n->parent); | |
825 | ||
826 | return false; | |
827 | } | |
828 | ||
dfa92725 LP |
829 | static bool bus_node_exists( |
830 | sd_bus *bus, | |
831 | struct node *n, | |
832 | const char *path, | |
833 | bool require_fallback) { | |
834 | ||
992c052c LP |
835 | struct node_vtable *c; |
836 | struct node_callback *k; | |
837 | ||
838 | assert(bus); | |
839 | assert(n); | |
dfa92725 | 840 | assert(path); |
992c052c LP |
841 | |
842 | /* Tests if there's anything attached directly to this node | |
843 | * for the specified path */ | |
844 | ||
845 | LIST_FOREACH(callbacks, k, n->callbacks) { | |
846 | if (require_fallback && !k->is_fallback) | |
847 | continue; | |
848 | ||
849 | return true; | |
850 | } | |
851 | ||
852 | LIST_FOREACH(vtables, c, n->vtables) { | |
f00c3121 | 853 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
992c052c LP |
854 | |
855 | if (require_fallback && !c->is_fallback) | |
856 | continue; | |
857 | ||
f00c3121 | 858 | if (node_vtable_get_userdata(bus, path, c, NULL, &error) > 0) |
992c052c | 859 | return true; |
68313d3d LP |
860 | if (bus->nodes_modified) |
861 | return false; | |
992c052c LP |
862 | } |
863 | ||
19befb2d | 864 | return !require_fallback && (n->enumerators || n->object_managers); |
992c052c LP |
865 | } |
866 | ||
867 | static int process_introspect( | |
868 | sd_bus *bus, | |
869 | sd_bus_message *m, | |
870 | struct node *n, | |
871 | bool require_fallback, | |
872 | bool *found_object) { | |
873 | ||
f00c3121 | 874 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
992c052c LP |
875 | _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; |
876 | _cleanup_set_free_free_ Set *s = NULL; | |
718db961 | 877 | const char *previous_interface = NULL; |
992c052c LP |
878 | struct introspect intro; |
879 | struct node_vtable *c; | |
880 | bool empty; | |
881 | int r; | |
882 | ||
883 | assert(bus); | |
884 | assert(m); | |
885 | assert(n); | |
886 | assert(found_object); | |
887 | ||
f00c3121 | 888 | r = get_child_nodes(bus, m->path, n, &s, &error); |
992c052c | 889 | if (r < 0) |
f00c3121 | 890 | return bus_maybe_reply_error(m, r, &error); |
68313d3d LP |
891 | if (bus->nodes_modified) |
892 | return 0; | |
992c052c | 893 | |
7fb411f0 | 894 | r = introspect_begin(&intro, bus->trusted); |
992c052c LP |
895 | if (r < 0) |
896 | return r; | |
897 | ||
898 | r = introspect_write_default_interfaces(&intro, bus_node_with_object_manager(bus, n)); | |
899 | if (r < 0) | |
900 | return r; | |
901 | ||
902 | empty = set_isempty(s); | |
903 | ||
904 | LIST_FOREACH(vtables, c, n->vtables) { | |
905 | if (require_fallback && !c->is_fallback) | |
906 | continue; | |
907 | ||
f00c3121 LP |
908 | r = node_vtable_get_userdata(bus, m->path, c, NULL, &error); |
909 | if (r < 0) { | |
910 | r = bus_maybe_reply_error(m, r, &error); | |
911 | goto finish; | |
912 | } | |
913 | if (bus->nodes_modified) { | |
914 | r = 0; | |
915 | goto finish; | |
916 | } | |
992c052c LP |
917 | if (r == 0) |
918 | continue; | |
919 | ||
920 | empty = false; | |
921 | ||
6e8df5f0 LP |
922 | if (c->vtable[0].flags & SD_BUS_VTABLE_HIDDEN) |
923 | continue; | |
924 | ||
718db961 LP |
925 | if (!streq_ptr(previous_interface, c->interface)) { |
926 | ||
927 | if (previous_interface) | |
928 | fputs(" </interface>\n", intro.f); | |
929 | ||
930 | fprintf(intro.f, " <interface name=\"%s\">\n", c->interface); | |
931 | } | |
932 | ||
933 | r = introspect_write_interface(&intro, c->vtable); | |
992c052c LP |
934 | if (r < 0) |
935 | goto finish; | |
718db961 LP |
936 | |
937 | previous_interface = c->interface; | |
992c052c LP |
938 | } |
939 | ||
718db961 LP |
940 | if (previous_interface) |
941 | fputs(" </interface>\n", intro.f); | |
942 | ||
992c052c LP |
943 | if (empty) { |
944 | /* Nothing?, let's see if we exist at all, and if not | |
945 | * refuse to do anything */ | |
946 | r = bus_node_exists(bus, n, m->path, require_fallback); | |
947 | if (r < 0) | |
948 | return r; | |
68313d3d LP |
949 | if (bus->nodes_modified) |
950 | return 0; | |
992c052c LP |
951 | if (r == 0) |
952 | goto finish; | |
953 | } | |
954 | ||
955 | *found_object = true; | |
956 | ||
957 | r = introspect_write_child_nodes(&intro, s, m->path); | |
958 | if (r < 0) | |
959 | goto finish; | |
960 | ||
961 | r = introspect_finish(&intro, bus, m, &reply); | |
962 | if (r < 0) | |
963 | goto finish; | |
964 | ||
965 | r = sd_bus_send(bus, reply, NULL); | |
966 | if (r < 0) | |
967 | goto finish; | |
968 | ||
969 | r = 1; | |
970 | ||
971 | finish: | |
972 | introspect_free(&intro); | |
973 | return r; | |
974 | } | |
975 | ||
992c052c LP |
976 | static int object_manager_serialize_path( |
977 | sd_bus *bus, | |
978 | sd_bus_message *reply, | |
979 | const char *prefix, | |
980 | const char *path, | |
981 | bool require_fallback, | |
982 | sd_bus_error *error) { | |
983 | ||
718db961 LP |
984 | const char *previous_interface = NULL; |
985 | bool found_something = false; | |
992c052c LP |
986 | struct node_vtable *i; |
987 | struct node *n; | |
988 | int r; | |
989 | ||
990 | assert(bus); | |
991 | assert(reply); | |
992 | assert(prefix); | |
993 | assert(path); | |
994 | assert(error); | |
995 | ||
996 | n = hashmap_get(bus->nodes, prefix); | |
997 | if (!n) | |
998 | return 0; | |
999 | ||
992c052c | 1000 | LIST_FOREACH(vtables, i, n->vtables) { |
92db139e | 1001 | void *u; |
992c052c LP |
1002 | |
1003 | if (require_fallback && !i->is_fallback) | |
1004 | continue; | |
1005 | ||
f00c3121 | 1006 | r = node_vtable_get_userdata(bus, path, i, &u, error); |
92db139e LP |
1007 | if (r < 0) |
1008 | return r; | |
68313d3d LP |
1009 | if (bus->nodes_modified) |
1010 | return 0; | |
92db139e LP |
1011 | if (r == 0) |
1012 | continue; | |
1013 | ||
1014 | if (!found_something) { | |
718db961 LP |
1015 | |
1016 | /* Open the object part */ | |
1017 | ||
92db139e LP |
1018 | r = sd_bus_message_open_container(reply, 'e', "oa{sa{sv}}"); |
1019 | if (r < 0) | |
1020 | return r; | |
1021 | ||
1022 | r = sd_bus_message_append(reply, "o", path); | |
1023 | if (r < 0) | |
1024 | return r; | |
1025 | ||
1026 | r = sd_bus_message_open_container(reply, 'a', "{sa{sv}}"); | |
1027 | if (r < 0) | |
1028 | return r; | |
1029 | ||
1030 | found_something = true; | |
1031 | } | |
1032 | ||
718db961 LP |
1033 | if (!streq_ptr(previous_interface, i->interface)) { |
1034 | ||
1035 | /* Maybe close the previous interface part */ | |
1036 | ||
1037 | if (previous_interface) { | |
1038 | r = sd_bus_message_close_container(reply); | |
1039 | if (r < 0) | |
1040 | return r; | |
1041 | ||
1042 | r = sd_bus_message_close_container(reply); | |
1043 | if (r < 0) | |
1044 | return r; | |
1045 | } | |
1046 | ||
1047 | /* Open the new interface part */ | |
1048 | ||
1049 | r = sd_bus_message_open_container(reply, 'e', "sa{sv}"); | |
1050 | if (r < 0) | |
1051 | return r; | |
1052 | ||
1053 | r = sd_bus_message_append(reply, "s", i->interface); | |
1054 | if (r < 0) | |
1055 | return r; | |
1056 | ||
1057 | r = sd_bus_message_open_container(reply, 'a', "{sv}"); | |
1058 | if (r < 0) | |
1059 | return r; | |
1060 | } | |
1061 | ||
1062 | r = vtable_append_all_properties(bus, reply, path, i, u, error); | |
992c052c LP |
1063 | if (r < 0) |
1064 | return r; | |
68313d3d LP |
1065 | if (bus->nodes_modified) |
1066 | return 0; | |
718db961 LP |
1067 | |
1068 | previous_interface = i->interface; | |
1069 | } | |
1070 | ||
1071 | if (previous_interface) { | |
1072 | r = sd_bus_message_close_container(reply); | |
1073 | if (r < 0) | |
1074 | return r; | |
1075 | ||
1076 | r = sd_bus_message_close_container(reply); | |
1077 | if (r < 0) | |
1078 | return r; | |
992c052c LP |
1079 | } |
1080 | ||
92db139e LP |
1081 | if (found_something) { |
1082 | r = sd_bus_message_close_container(reply); | |
1083 | if (r < 0) | |
1084 | return r; | |
992c052c | 1085 | |
92db139e LP |
1086 | r = sd_bus_message_close_container(reply); |
1087 | if (r < 0) | |
1088 | return r; | |
1089 | } | |
992c052c LP |
1090 | |
1091 | return 1; | |
1092 | } | |
1093 | ||
1094 | static int object_manager_serialize_path_and_fallbacks( | |
1095 | sd_bus *bus, | |
1096 | sd_bus_message *reply, | |
1097 | const char *path, | |
1098 | sd_bus_error *error) { | |
1099 | ||
92e189e5 | 1100 | char *prefix; |
992c052c LP |
1101 | int r; |
1102 | ||
1103 | assert(bus); | |
1104 | assert(reply); | |
1105 | assert(path); | |
1106 | assert(error); | |
1107 | ||
1108 | /* First, add all vtables registered for this path */ | |
1109 | r = object_manager_serialize_path(bus, reply, path, path, false, error); | |
1110 | if (r < 0) | |
1111 | return r; | |
68313d3d LP |
1112 | if (bus->nodes_modified) |
1113 | return 0; | |
992c052c LP |
1114 | |
1115 | /* Second, add fallback vtables registered for any of the prefixes */ | |
92e189e5 LP |
1116 | prefix = alloca(strlen(path) + 1); |
1117 | OBJECT_PATH_FOREACH_PREFIX(prefix, path) { | |
1118 | r = object_manager_serialize_path(bus, reply, prefix, path, true, error); | |
1119 | if (r < 0) | |
1120 | return r; | |
68313d3d LP |
1121 | if (bus->nodes_modified) |
1122 | return 0; | |
992c052c LP |
1123 | } |
1124 | ||
1125 | return 0; | |
1126 | } | |
1127 | ||
1128 | static int process_get_managed_objects( | |
1129 | sd_bus *bus, | |
1130 | sd_bus_message *m, | |
1131 | struct node *n, | |
1132 | bool require_fallback, | |
1133 | bool *found_object) { | |
1134 | ||
f00c3121 | 1135 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
992c052c LP |
1136 | _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; |
1137 | _cleanup_set_free_free_ Set *s = NULL; | |
1138 | bool empty; | |
1139 | int r; | |
1140 | ||
1141 | assert(bus); | |
1142 | assert(m); | |
1143 | assert(n); | |
1144 | assert(found_object); | |
1145 | ||
1146 | if (!bus_node_with_object_manager(bus, n)) | |
1147 | return 0; | |
1148 | ||
f00c3121 | 1149 | r = get_child_nodes(bus, m->path, n, &s, &error); |
992c052c LP |
1150 | if (r < 0) |
1151 | return r; | |
68313d3d LP |
1152 | if (bus->nodes_modified) |
1153 | return 0; | |
992c052c | 1154 | |
df2d202e | 1155 | r = sd_bus_message_new_method_return(m, &reply); |
992c052c LP |
1156 | if (r < 0) |
1157 | return r; | |
1158 | ||
1159 | r = sd_bus_message_open_container(reply, 'a', "{oa{sa{sv}}}"); | |
1160 | if (r < 0) | |
1161 | return r; | |
1162 | ||
1163 | empty = set_isempty(s); | |
1164 | if (empty) { | |
1165 | struct node_vtable *c; | |
1166 | ||
1167 | /* Hmm, so we have no children? Then let's check | |
1168 | * whether we exist at all, i.e. whether at least one | |
1169 | * vtable exists. */ | |
1170 | ||
1171 | LIST_FOREACH(vtables, c, n->vtables) { | |
1172 | ||
1173 | if (require_fallback && !c->is_fallback) | |
1174 | continue; | |
1175 | ||
1176 | if (r < 0) | |
1177 | return r; | |
1178 | if (r == 0) | |
1179 | continue; | |
1180 | ||
1181 | empty = false; | |
1182 | break; | |
1183 | } | |
1184 | ||
1185 | if (empty) | |
1186 | return 0; | |
1187 | } else { | |
1188 | Iterator i; | |
1189 | char *path; | |
1190 | ||
1191 | SET_FOREACH(path, s, i) { | |
992c052c LP |
1192 | r = object_manager_serialize_path_and_fallbacks(bus, reply, path, &error); |
1193 | if (r < 0) | |
f00c3121 | 1194 | return r; |
68313d3d LP |
1195 | |
1196 | if (bus->nodes_modified) | |
1197 | return 0; | |
992c052c LP |
1198 | } |
1199 | } | |
1200 | ||
1201 | r = sd_bus_message_close_container(reply); | |
1202 | if (r < 0) | |
1203 | return r; | |
1204 | ||
1205 | r = sd_bus_send(bus, reply, NULL); | |
1206 | if (r < 0) | |
1207 | return r; | |
1208 | ||
1209 | return 1; | |
1210 | } | |
1211 | ||
1212 | static int object_find_and_run( | |
1213 | sd_bus *bus, | |
1214 | sd_bus_message *m, | |
1215 | const char *p, | |
1216 | bool require_fallback, | |
1217 | bool *found_object) { | |
1218 | ||
1219 | struct node *n; | |
1220 | struct vtable_member vtable_key, *v; | |
1221 | int r; | |
1222 | ||
1223 | assert(bus); | |
1224 | assert(m); | |
1225 | assert(p); | |
1226 | assert(found_object); | |
1227 | ||
1228 | n = hashmap_get(bus->nodes, p); | |
1229 | if (!n) | |
1230 | return 0; | |
1231 | ||
1232 | /* First, try object callbacks */ | |
1233 | r = node_callbacks_run(bus, m, n->callbacks, require_fallback, found_object); | |
1234 | if (r != 0) | |
1235 | return r; | |
68313d3d LP |
1236 | if (bus->nodes_modified) |
1237 | return 0; | |
992c052c LP |
1238 | |
1239 | if (!m->interface || !m->member) | |
1240 | return 0; | |
1241 | ||
1242 | /* Then, look for a known method */ | |
1243 | vtable_key.path = (char*) p; | |
1244 | vtable_key.interface = m->interface; | |
1245 | vtable_key.member = m->member; | |
1246 | ||
1247 | v = hashmap_get(bus->vtable_methods, &vtable_key); | |
1248 | if (v) { | |
1249 | r = method_callbacks_run(bus, m, v, require_fallback, found_object); | |
1250 | if (r != 0) | |
1251 | return r; | |
68313d3d LP |
1252 | if (bus->nodes_modified) |
1253 | return 0; | |
992c052c LP |
1254 | } |
1255 | ||
1256 | /* Then, look for a known property */ | |
1257 | if (streq(m->interface, "org.freedesktop.DBus.Properties")) { | |
1258 | bool get = false; | |
1259 | ||
1260 | get = streq(m->member, "Get"); | |
1261 | ||
1262 | if (get || streq(m->member, "Set")) { | |
1263 | ||
1264 | r = sd_bus_message_rewind(m, true); | |
1265 | if (r < 0) | |
1266 | return r; | |
1267 | ||
1268 | vtable_key.path = (char*) p; | |
1269 | ||
1270 | r = sd_bus_message_read(m, "ss", &vtable_key.interface, &vtable_key.member); | |
1271 | if (r < 0) | |
0fc5ab90 | 1272 | return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected interface and member parameters"); |
992c052c LP |
1273 | |
1274 | v = hashmap_get(bus->vtable_properties, &vtable_key); | |
1275 | if (v) { | |
1276 | r = property_get_set_callbacks_run(bus, m, v, require_fallback, get, found_object); | |
1277 | if (r != 0) | |
1278 | return r; | |
1279 | } | |
1280 | ||
1281 | } else if (streq(m->member, "GetAll")) { | |
1282 | const char *iface; | |
1283 | ||
1284 | r = sd_bus_message_rewind(m, true); | |
1285 | if (r < 0) | |
1286 | return r; | |
1287 | ||
1288 | r = sd_bus_message_read(m, "s", &iface); | |
1289 | if (r < 0) | |
0fc5ab90 | 1290 | return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected interface parameter"); |
992c052c LP |
1291 | |
1292 | if (iface[0] == 0) | |
1293 | iface = NULL; | |
1294 | ||
1295 | r = property_get_all_callbacks_run(bus, m, n->vtables, require_fallback, iface, found_object); | |
1296 | if (r != 0) | |
1297 | return r; | |
1298 | } | |
1299 | ||
1300 | } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Introspectable", "Introspect")) { | |
1301 | ||
0fc5ab90 LP |
1302 | if (!isempty(sd_bus_message_get_signature(m, true))) |
1303 | return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected no parameters"); | |
1304 | ||
992c052c LP |
1305 | r = process_introspect(bus, m, n, require_fallback, found_object); |
1306 | if (r != 0) | |
1307 | return r; | |
1308 | ||
1309 | } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus.ObjectManager", "GetManagedObjects")) { | |
1310 | ||
0fc5ab90 LP |
1311 | if (!isempty(sd_bus_message_get_signature(m, true))) |
1312 | return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected no parameters"); | |
1313 | ||
992c052c LP |
1314 | r = process_get_managed_objects(bus, m, n, require_fallback, found_object); |
1315 | if (r != 0) | |
1316 | return r; | |
1317 | } | |
1318 | ||
68313d3d LP |
1319 | if (bus->nodes_modified) |
1320 | return 0; | |
1321 | ||
992c052c LP |
1322 | if (!*found_object) { |
1323 | r = bus_node_exists(bus, n, m->path, require_fallback); | |
1324 | if (r < 0) | |
1325 | return r; | |
992c052c LP |
1326 | if (r > 0) |
1327 | *found_object = true; | |
1328 | } | |
1329 | ||
1330 | return 0; | |
1331 | } | |
1332 | ||
1333 | int bus_process_object(sd_bus *bus, sd_bus_message *m) { | |
1334 | int r; | |
1335 | size_t pl; | |
1336 | bool found_object = false; | |
1337 | ||
1338 | assert(bus); | |
1339 | assert(m); | |
1340 | ||
09365592 LP |
1341 | if (bus->hello_flags & KDBUS_HELLO_MONITOR) |
1342 | return 0; | |
1343 | ||
40ca29a1 | 1344 | if (m->header->type != SD_BUS_MESSAGE_METHOD_CALL) |
992c052c LP |
1345 | return 0; |
1346 | ||
992c052c LP |
1347 | if (hashmap_isempty(bus->nodes)) |
1348 | return 0; | |
1349 | ||
f820cf99 LP |
1350 | /* Never respond to broadcast messages */ |
1351 | if (bus->bus_client && !m->destination) | |
1352 | return 0; | |
1353 | ||
adacb957 LP |
1354 | assert(m->path); |
1355 | assert(m->member); | |
1356 | ||
992c052c LP |
1357 | pl = strlen(m->path); |
1358 | do { | |
92e189e5 | 1359 | char prefix[pl+1]; |
992c052c LP |
1360 | |
1361 | bus->nodes_modified = false; | |
1362 | ||
1363 | r = object_find_and_run(bus, m, m->path, false, &found_object); | |
1364 | if (r != 0) | |
1365 | return r; | |
1366 | ||
1367 | /* Look for fallback prefixes */ | |
92e189e5 | 1368 | OBJECT_PATH_FOREACH_PREFIX(prefix, m->path) { |
992c052c LP |
1369 | |
1370 | if (bus->nodes_modified) | |
1371 | break; | |
1372 | ||
92e189e5 | 1373 | r = object_find_and_run(bus, m, prefix, true, &found_object); |
992c052c LP |
1374 | if (r != 0) |
1375 | return r; | |
1376 | } | |
1377 | ||
1378 | } while (bus->nodes_modified); | |
1379 | ||
1380 | if (!found_object) | |
1381 | return 0; | |
1382 | ||
1383 | if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Properties", "Get") || | |
1384 | sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Properties", "Set")) | |
1385 | r = sd_bus_reply_method_errorf( | |
df2d202e | 1386 | m, |
40ca29a1 | 1387 | SD_BUS_ERROR_UNKNOWN_PROPERTY, |
992c052c LP |
1388 | "Unknown property or interface."); |
1389 | else | |
1390 | r = sd_bus_reply_method_errorf( | |
df2d202e | 1391 | m, |
40ca29a1 | 1392 | SD_BUS_ERROR_UNKNOWN_METHOD, |
992c052c LP |
1393 | "Unknown method '%s' or interface '%s'.", m->member, m->interface); |
1394 | ||
1395 | if (r < 0) | |
1396 | return r; | |
1397 | ||
1398 | return 1; | |
1399 | } | |
1400 | ||
1401 | static struct node *bus_node_allocate(sd_bus *bus, const char *path) { | |
1402 | struct node *n, *parent; | |
1403 | const char *e; | |
2fd069b1 ZJS |
1404 | _cleanup_free_ char *s = NULL; |
1405 | char *p; | |
992c052c LP |
1406 | int r; |
1407 | ||
1408 | assert(bus); | |
1409 | assert(path); | |
1410 | assert(path[0] == '/'); | |
1411 | ||
1412 | n = hashmap_get(bus->nodes, path); | |
1413 | if (n) | |
1414 | return n; | |
1415 | ||
1416 | r = hashmap_ensure_allocated(&bus->nodes, string_hash_func, string_compare_func); | |
1417 | if (r < 0) | |
1418 | return NULL; | |
1419 | ||
1420 | s = strdup(path); | |
1421 | if (!s) | |
1422 | return NULL; | |
1423 | ||
1424 | if (streq(path, "/")) | |
1425 | parent = NULL; | |
1426 | else { | |
1427 | e = strrchr(path, '/'); | |
1428 | assert(e); | |
1429 | ||
1430 | p = strndupa(path, MAX(1, path - e)); | |
1431 | ||
1432 | parent = bus_node_allocate(bus, p); | |
2fd069b1 | 1433 | if (!parent) |
992c052c | 1434 | return NULL; |
992c052c LP |
1435 | } |
1436 | ||
1437 | n = new0(struct node, 1); | |
1438 | if (!n) | |
1439 | return NULL; | |
1440 | ||
1441 | n->parent = parent; | |
1442 | n->path = s; | |
2fd069b1 | 1443 | s = NULL; /* do not free */ |
992c052c | 1444 | |
8e050193 | 1445 | r = hashmap_put(bus->nodes, n->path, n); |
992c052c | 1446 | if (r < 0) { |
2fd069b1 | 1447 | free(n->path); |
992c052c LP |
1448 | free(n); |
1449 | return NULL; | |
1450 | } | |
1451 | ||
1452 | if (parent) | |
71fda00f | 1453 | LIST_PREPEND(siblings, parent->child, n); |
992c052c LP |
1454 | |
1455 | return n; | |
1456 | } | |
1457 | ||
19befb2d | 1458 | void bus_node_gc(sd_bus *b, struct node *n) { |
992c052c LP |
1459 | assert(b); |
1460 | ||
1461 | if (!n) | |
1462 | return; | |
1463 | ||
1464 | if (n->child || | |
1465 | n->callbacks || | |
1466 | n->vtables || | |
1467 | n->enumerators || | |
19befb2d | 1468 | n->object_managers) |
992c052c LP |
1469 | return; |
1470 | ||
1471 | assert(hashmap_remove(b->nodes, n->path) == n); | |
1472 | ||
1473 | if (n->parent) | |
71fda00f | 1474 | LIST_REMOVE(siblings, n->parent->child, n); |
992c052c LP |
1475 | |
1476 | free(n->path); | |
1477 | bus_node_gc(b, n->parent); | |
1478 | free(n); | |
1479 | } | |
1480 | ||
1481 | static int bus_add_object( | |
dfa92725 | 1482 | sd_bus *bus, |
19befb2d | 1483 | sd_bus_slot **slot, |
992c052c LP |
1484 | bool fallback, |
1485 | const char *path, | |
1486 | sd_bus_message_handler_t callback, | |
1487 | void *userdata) { | |
1488 | ||
19befb2d | 1489 | sd_bus_slot *s; |
992c052c LP |
1490 | struct node *n; |
1491 | int r; | |
1492 | ||
dfa92725 LP |
1493 | assert_return(bus, -EINVAL); |
1494 | assert_return(object_path_is_valid(path), -EINVAL); | |
1495 | assert_return(callback, -EINVAL); | |
1496 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
992c052c | 1497 | |
dfa92725 | 1498 | n = bus_node_allocate(bus, path); |
992c052c LP |
1499 | if (!n) |
1500 | return -ENOMEM; | |
1501 | ||
19befb2d LP |
1502 | s = bus_slot_allocate(bus, !slot, BUS_NODE_CALLBACK, sizeof(struct node_callback), userdata); |
1503 | if (!s) { | |
992c052c LP |
1504 | r = -ENOMEM; |
1505 | goto fail; | |
1506 | } | |
1507 | ||
19befb2d LP |
1508 | s->node_callback.callback = callback; |
1509 | s->node_callback.is_fallback = fallback; | |
992c052c | 1510 | |
19befb2d LP |
1511 | s->node_callback.node = n; |
1512 | LIST_PREPEND(callbacks, n->callbacks, &s->node_callback); | |
68313d3d LP |
1513 | bus->nodes_modified = true; |
1514 | ||
19befb2d LP |
1515 | if (slot) |
1516 | *slot = s; | |
1517 | ||
992c052c LP |
1518 | return 0; |
1519 | ||
1520 | fail: | |
19befb2d | 1521 | sd_bus_slot_unref(s); |
dfa92725 | 1522 | bus_node_gc(bus, n); |
19befb2d | 1523 | |
992c052c LP |
1524 | return r; |
1525 | } | |
1526 | ||
19befb2d | 1527 | _public_ int sd_bus_add_object( |
992c052c | 1528 | sd_bus *bus, |
19befb2d | 1529 | sd_bus_slot **slot, |
992c052c LP |
1530 | const char *path, |
1531 | sd_bus_message_handler_t callback, | |
1532 | void *userdata) { | |
1533 | ||
19befb2d | 1534 | return bus_add_object(bus, slot, false, path, callback, userdata); |
992c052c LP |
1535 | } |
1536 | ||
19befb2d LP |
1537 | _public_ int sd_bus_add_fallback( |
1538 | sd_bus *bus, | |
1539 | sd_bus_slot **slot, | |
1540 | const char *prefix, | |
1541 | sd_bus_message_handler_t callback, | |
1542 | void *userdata) { | |
992c052c | 1543 | |
19befb2d | 1544 | return bus_add_object(bus, slot, true, prefix, callback, userdata); |
992c052c LP |
1545 | } |
1546 | ||
9bf3b535 | 1547 | static unsigned long vtable_member_hash_func(const void *a, const uint8_t hash_key[HASH_KEY_SIZE]) { |
992c052c | 1548 | const struct vtable_member *m = a; |
9bf3b535 LP |
1549 | uint8_t hash_key2[HASH_KEY_SIZE]; |
1550 | unsigned long ret; | |
992c052c | 1551 | |
dfa92725 LP |
1552 | assert(m); |
1553 | ||
9bf3b535 LP |
1554 | ret = string_hash_func(m->path, hash_key); |
1555 | ||
1556 | /* Use a slightly different hash key for the interface */ | |
1557 | memcpy(hash_key2, hash_key, HASH_KEY_SIZE); | |
1558 | hash_key2[0]++; | |
1559 | ret ^= string_hash_func(m->interface, hash_key2); | |
1560 | ||
1561 | /* And an even different one for the member */ | |
1562 | hash_key2[0]++; | |
1563 | ret ^= string_hash_func(m->member, hash_key2); | |
1564 | ||
1565 | return ret; | |
992c052c LP |
1566 | } |
1567 | ||
1568 | static int vtable_member_compare_func(const void *a, const void *b) { | |
1569 | const struct vtable_member *x = a, *y = b; | |
1570 | int r; | |
1571 | ||
dfa92725 LP |
1572 | assert(x); |
1573 | assert(y); | |
1574 | ||
992c052c LP |
1575 | r = strcmp(x->path, y->path); |
1576 | if (r != 0) | |
1577 | return r; | |
1578 | ||
1579 | r = strcmp(x->interface, y->interface); | |
1580 | if (r != 0) | |
1581 | return r; | |
1582 | ||
1583 | return strcmp(x->member, y->member); | |
1584 | } | |
1585 | ||
1586 | static int add_object_vtable_internal( | |
1587 | sd_bus *bus, | |
19befb2d | 1588 | sd_bus_slot **slot, |
992c052c LP |
1589 | const char *path, |
1590 | const char *interface, | |
1591 | const sd_bus_vtable *vtable, | |
1592 | bool fallback, | |
1593 | sd_bus_object_find_t find, | |
1594 | void *userdata) { | |
1595 | ||
19befb2d LP |
1596 | sd_bus_slot *s; |
1597 | struct node_vtable *i, *existing = NULL; | |
992c052c LP |
1598 | const sd_bus_vtable *v; |
1599 | struct node *n; | |
1600 | int r; | |
1601 | ||
dfa92725 LP |
1602 | assert_return(bus, -EINVAL); |
1603 | assert_return(object_path_is_valid(path), -EINVAL); | |
1604 | assert_return(interface_name_is_valid(interface), -EINVAL); | |
1605 | assert_return(vtable, -EINVAL); | |
1606 | assert_return(vtable[0].type == _SD_BUS_VTABLE_START, -EINVAL); | |
1607 | assert_return(vtable[0].x.start.element_size == sizeof(struct sd_bus_vtable), -EINVAL); | |
1608 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
718db961 LP |
1609 | assert_return(!streq(interface, "org.freedesktop.DBus.Properties") && |
1610 | !streq(interface, "org.freedesktop.DBus.Introspectable") && | |
1611 | !streq(interface, "org.freedesktop.DBus.Peer") && | |
1612 | !streq(interface, "org.freedesktop.DBus.ObjectManager"), -EINVAL); | |
992c052c LP |
1613 | |
1614 | r = hashmap_ensure_allocated(&bus->vtable_methods, vtable_member_hash_func, vtable_member_compare_func); | |
1615 | if (r < 0) | |
1616 | return r; | |
1617 | ||
1618 | r = hashmap_ensure_allocated(&bus->vtable_properties, vtable_member_hash_func, vtable_member_compare_func); | |
1619 | if (r < 0) | |
1620 | return r; | |
1621 | ||
1622 | n = bus_node_allocate(bus, path); | |
1623 | if (!n) | |
1624 | return -ENOMEM; | |
1625 | ||
1626 | LIST_FOREACH(vtables, i, n->vtables) { | |
992c052c LP |
1627 | if (i->is_fallback != fallback) { |
1628 | r = -EPROTOTYPE; | |
1629 | goto fail; | |
1630 | } | |
718db961 LP |
1631 | |
1632 | if (streq(i->interface, interface)) { | |
1633 | ||
1634 | if (i->vtable == vtable) { | |
1635 | r = -EEXIST; | |
1636 | goto fail; | |
1637 | } | |
1638 | ||
1639 | existing = i; | |
1640 | } | |
992c052c LP |
1641 | } |
1642 | ||
19befb2d LP |
1643 | s = bus_slot_allocate(bus, !slot, BUS_NODE_VTABLE, sizeof(struct node_vtable), userdata); |
1644 | if (!s) { | |
992c052c LP |
1645 | r = -ENOMEM; |
1646 | goto fail; | |
1647 | } | |
1648 | ||
19befb2d LP |
1649 | s->node_vtable.is_fallback = fallback; |
1650 | s->node_vtable.vtable = vtable; | |
1651 | s->node_vtable.find = find; | |
992c052c | 1652 | |
19befb2d LP |
1653 | s->node_vtable.interface = strdup(interface); |
1654 | if (!s->node_vtable.interface) { | |
992c052c LP |
1655 | r = -ENOMEM; |
1656 | goto fail; | |
1657 | } | |
1658 | ||
19befb2d | 1659 | for (v = s->node_vtable.vtable+1; v->type != _SD_BUS_VTABLE_END; v++) { |
992c052c LP |
1660 | |
1661 | switch (v->type) { | |
1662 | ||
1663 | case _SD_BUS_VTABLE_METHOD: { | |
1664 | struct vtable_member *m; | |
1665 | ||
77a874a3 LP |
1666 | if (!member_name_is_valid(v->x.method.member) || |
1667 | !signature_is_valid(strempty(v->x.method.signature), false) || | |
1668 | !signature_is_valid(strempty(v->x.method.result), false) || | |
1669 | !(v->x.method.handler || (isempty(v->x.method.signature) && isempty(v->x.method.result))) || | |
df98a87b | 1670 | v->flags & (SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE|SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION)) { |
992c052c LP |
1671 | r = -EINVAL; |
1672 | goto fail; | |
1673 | } | |
1674 | ||
1675 | m = new0(struct vtable_member, 1); | |
1676 | if (!m) { | |
1677 | r = -ENOMEM; | |
1678 | goto fail; | |
1679 | } | |
1680 | ||
19befb2d | 1681 | m->parent = &s->node_vtable; |
992c052c | 1682 | m->path = n->path; |
19befb2d | 1683 | m->interface = s->node_vtable.interface; |
77a874a3 | 1684 | m->member = v->x.method.member; |
992c052c LP |
1685 | m->vtable = v; |
1686 | ||
1687 | r = hashmap_put(bus->vtable_methods, m, m); | |
1688 | if (r < 0) { | |
1689 | free(m); | |
1690 | goto fail; | |
1691 | } | |
1692 | ||
1693 | break; | |
1694 | } | |
1695 | ||
1696 | case _SD_BUS_VTABLE_WRITABLE_PROPERTY: | |
1697 | ||
77a874a3 | 1698 | if (!(v->x.property.set || bus_type_is_basic(v->x.property.signature[0]))) { |
992c052c LP |
1699 | r = -EINVAL; |
1700 | goto fail; | |
1701 | } | |
1702 | ||
1703 | /* Fall through */ | |
1704 | ||
1705 | case _SD_BUS_VTABLE_PROPERTY: { | |
1706 | struct vtable_member *m; | |
1707 | ||
77a874a3 LP |
1708 | if (!member_name_is_valid(v->x.property.member) || |
1709 | !signature_is_single(v->x.property.signature, false) || | |
c13c7de3 | 1710 | !(v->x.property.get || bus_type_is_basic(v->x.property.signature[0]) || streq(v->x.property.signature, "as")) || |
992c052c | 1711 | v->flags & SD_BUS_VTABLE_METHOD_NO_REPLY || |
df98a87b | 1712 | (!!(v->flags & SD_BUS_VTABLE_PROPERTY_CONST) + !!(v->flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE) + !!(v->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION)) > 1 || |
adacb957 | 1713 | (v->flags & SD_BUS_VTABLE_UNPRIVILEGED && v->type == _SD_BUS_VTABLE_PROPERTY)) { |
992c052c LP |
1714 | r = -EINVAL; |
1715 | goto fail; | |
1716 | } | |
1717 | ||
992c052c LP |
1718 | m = new0(struct vtable_member, 1); |
1719 | if (!m) { | |
1720 | r = -ENOMEM; | |
1721 | goto fail; | |
1722 | } | |
1723 | ||
19befb2d | 1724 | m->parent = &s->node_vtable; |
992c052c | 1725 | m->path = n->path; |
19befb2d | 1726 | m->interface = s->node_vtable.interface; |
77a874a3 | 1727 | m->member = v->x.property.member; |
992c052c LP |
1728 | m->vtable = v; |
1729 | ||
1730 | r = hashmap_put(bus->vtable_properties, m, m); | |
1731 | if (r < 0) { | |
1732 | free(m); | |
1733 | goto fail; | |
1734 | } | |
1735 | ||
1736 | break; | |
1737 | } | |
1738 | ||
1739 | case _SD_BUS_VTABLE_SIGNAL: | |
1740 | ||
77a874a3 | 1741 | if (!member_name_is_valid(v->x.signal.member) || |
adacb957 LP |
1742 | !signature_is_valid(strempty(v->x.signal.signature), false) || |
1743 | v->flags & SD_BUS_VTABLE_UNPRIVILEGED) { | |
992c052c LP |
1744 | r = -EINVAL; |
1745 | goto fail; | |
1746 | } | |
1747 | ||
1748 | break; | |
1749 | ||
1750 | default: | |
1751 | r = -EINVAL; | |
1752 | goto fail; | |
1753 | } | |
1754 | } | |
1755 | ||
19befb2d LP |
1756 | s->node_vtable.node = n; |
1757 | LIST_INSERT_AFTER(vtables, n->vtables, existing, &s->node_vtable); | |
68313d3d LP |
1758 | bus->nodes_modified = true; |
1759 | ||
19befb2d LP |
1760 | if (slot) |
1761 | *slot = s; | |
1762 | ||
992c052c LP |
1763 | return 0; |
1764 | ||
1765 | fail: | |
19befb2d | 1766 | sd_bus_slot_unref(s); |
dfa92725 LP |
1767 | bus_node_gc(bus, n); |
1768 | ||
19befb2d | 1769 | return r; |
992c052c LP |
1770 | } |
1771 | ||
d9f644e2 | 1772 | _public_ int sd_bus_add_object_vtable( |
992c052c | 1773 | sd_bus *bus, |
19befb2d | 1774 | sd_bus_slot **slot, |
992c052c LP |
1775 | const char *path, |
1776 | const char *interface, | |
1777 | const sd_bus_vtable *vtable, | |
1778 | void *userdata) { | |
1779 | ||
19befb2d | 1780 | return add_object_vtable_internal(bus, slot, path, interface, vtable, false, NULL, userdata); |
992c052c LP |
1781 | } |
1782 | ||
d9f644e2 | 1783 | _public_ int sd_bus_add_fallback_vtable( |
992c052c | 1784 | sd_bus *bus, |
19befb2d LP |
1785 | sd_bus_slot **slot, |
1786 | const char *prefix, | |
718db961 LP |
1787 | const char *interface, |
1788 | const sd_bus_vtable *vtable, | |
1789 | sd_bus_object_find_t find, | |
1790 | void *userdata) { | |
992c052c | 1791 | |
19befb2d | 1792 | return add_object_vtable_internal(bus, slot, prefix, interface, vtable, true, find, userdata); |
992c052c LP |
1793 | } |
1794 | ||
d9f644e2 | 1795 | _public_ int sd_bus_add_node_enumerator( |
992c052c | 1796 | sd_bus *bus, |
19befb2d | 1797 | sd_bus_slot **slot, |
992c052c LP |
1798 | const char *path, |
1799 | sd_bus_node_enumerator_t callback, | |
1800 | void *userdata) { | |
1801 | ||
19befb2d | 1802 | sd_bus_slot *s; |
992c052c LP |
1803 | struct node *n; |
1804 | int r; | |
1805 | ||
dfa92725 LP |
1806 | assert_return(bus, -EINVAL); |
1807 | assert_return(object_path_is_valid(path), -EINVAL); | |
1808 | assert_return(callback, -EINVAL); | |
1809 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
992c052c LP |
1810 | |
1811 | n = bus_node_allocate(bus, path); | |
1812 | if (!n) | |
1813 | return -ENOMEM; | |
1814 | ||
19befb2d LP |
1815 | s = bus_slot_allocate(bus, !slot, BUS_NODE_ENUMERATOR, sizeof(struct node_enumerator), userdata); |
1816 | if (!s) { | |
992c052c LP |
1817 | r = -ENOMEM; |
1818 | goto fail; | |
1819 | } | |
1820 | ||
19befb2d | 1821 | s->node_enumerator.callback = callback; |
68313d3d | 1822 | |
19befb2d LP |
1823 | s->node_enumerator.node = n; |
1824 | LIST_PREPEND(enumerators, n->enumerators, &s->node_enumerator); | |
68313d3d LP |
1825 | bus->nodes_modified = true; |
1826 | ||
19befb2d LP |
1827 | if (slot) |
1828 | *slot = s; | |
1829 | ||
992c052c LP |
1830 | return 0; |
1831 | ||
1832 | fail: | |
19befb2d | 1833 | sd_bus_slot_unref(s); |
992c052c LP |
1834 | bus_node_gc(bus, n); |
1835 | ||
19befb2d | 1836 | return r; |
992c052c LP |
1837 | } |
1838 | ||
1839 | static int emit_properties_changed_on_interface( | |
1840 | sd_bus *bus, | |
1841 | const char *prefix, | |
1842 | const char *path, | |
1843 | const char *interface, | |
1844 | bool require_fallback, | |
46525bfc | 1845 | bool *found_interface, |
992c052c LP |
1846 | char **names) { |
1847 | ||
f00c3121 | 1848 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
992c052c | 1849 | _cleanup_bus_message_unref_ sd_bus_message *m = NULL; |
718db961 LP |
1850 | bool has_invalidating = false, has_changing = false; |
1851 | struct vtable_member key = {}; | |
992c052c LP |
1852 | struct node_vtable *c; |
1853 | struct node *n; | |
1854 | char **property; | |
1855 | void *u = NULL; | |
1856 | int r; | |
1857 | ||
1858 | assert(bus); | |
dfa92725 | 1859 | assert(prefix); |
992c052c LP |
1860 | assert(path); |
1861 | assert(interface); | |
46525bfc | 1862 | assert(found_interface); |
992c052c LP |
1863 | |
1864 | n = hashmap_get(bus->nodes, prefix); | |
1865 | if (!n) | |
1866 | return 0; | |
1867 | ||
151b9b96 | 1868 | r = sd_bus_message_new_signal(bus, &m, path, "org.freedesktop.DBus.Properties", "PropertiesChanged"); |
992c052c LP |
1869 | if (r < 0) |
1870 | return r; | |
1871 | ||
1872 | r = sd_bus_message_append(m, "s", interface); | |
1873 | if (r < 0) | |
1874 | return r; | |
1875 | ||
1876 | r = sd_bus_message_open_container(m, 'a', "{sv}"); | |
1877 | if (r < 0) | |
1878 | return r; | |
1879 | ||
1880 | key.path = prefix; | |
1881 | key.interface = interface; | |
1882 | ||
718db961 LP |
1883 | LIST_FOREACH(vtables, c, n->vtables) { |
1884 | if (require_fallback && !c->is_fallback) | |
1885 | continue; | |
992c052c | 1886 | |
718db961 | 1887 | if (!streq(c->interface, interface)) |
992c052c | 1888 | continue; |
992c052c | 1889 | |
f00c3121 | 1890 | r = node_vtable_get_userdata(bus, path, c, &u, &error); |
992c052c LP |
1891 | if (r < 0) |
1892 | return r; | |
718db961 LP |
1893 | if (bus->nodes_modified) |
1894 | return 0; | |
1895 | if (r == 0) | |
1896 | continue; | |
992c052c | 1897 | |
46525bfc LP |
1898 | *found_interface = true; |
1899 | ||
a03e4337 LP |
1900 | if (names) { |
1901 | /* If the caller specified a list of | |
1902 | * properties we include exactly those in the | |
1903 | * PropertiesChanged message */ | |
992c052c | 1904 | |
a03e4337 LP |
1905 | STRV_FOREACH(property, names) { |
1906 | struct vtable_member *v; | |
992c052c | 1907 | |
a03e4337 | 1908 | assert_return(member_name_is_valid(*property), -EINVAL); |
718db961 | 1909 | |
a03e4337 LP |
1910 | key.member = *property; |
1911 | v = hashmap_get(bus->vtable_properties, &key); | |
1912 | if (!v) | |
1913 | return -ENOENT; | |
1914 | ||
1915 | /* If there are two vtables for the same | |
1916 | * interface, let's handle this property when | |
1917 | * we come to that vtable. */ | |
1918 | if (c != v->parent) | |
1919 | continue; | |
992c052c | 1920 | |
a03e4337 LP |
1921 | assert_return(v->vtable->flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE || |
1922 | v->vtable->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION, -EDOM); | |
992c052c | 1923 | |
a03e4337 LP |
1924 | assert_return(!(v->vtable->flags & SD_BUS_VTABLE_HIDDEN), -EDOM); |
1925 | ||
1926 | if (v->vtable->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION) { | |
1927 | has_invalidating = true; | |
1928 | continue; | |
1929 | } | |
1930 | ||
1931 | has_changing = true; | |
1932 | ||
1933 | r = vtable_append_one_property(bus, m, m->path, c, v->vtable, u, &error); | |
1934 | if (r < 0) | |
1935 | return r; | |
1936 | if (bus->nodes_modified) | |
1937 | return 0; | |
718db961 | 1938 | } |
a03e4337 LP |
1939 | } else { |
1940 | const sd_bus_vtable *v; | |
718db961 | 1941 | |
a03e4337 LP |
1942 | /* If the caller specified no properties list |
1943 | * we include all properties that are marked | |
1944 | * as changing in the message. */ | |
718db961 | 1945 | |
a03e4337 LP |
1946 | for (v = c->vtable+1; v->type != _SD_BUS_VTABLE_END; v++) { |
1947 | if (v->type != _SD_BUS_VTABLE_PROPERTY && v->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY) | |
1948 | continue; | |
718db961 | 1949 | |
a03e4337 LP |
1950 | if (v->flags & SD_BUS_VTABLE_HIDDEN) |
1951 | continue; | |
718db961 | 1952 | |
a03e4337 LP |
1953 | if (v->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION) { |
1954 | has_invalidating = true; | |
1955 | continue; | |
1956 | } | |
718db961 | 1957 | |
a03e4337 LP |
1958 | if (!(v->flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE)) |
1959 | continue; | |
718db961 | 1960 | |
a03e4337 | 1961 | has_changing = true; |
718db961 | 1962 | |
a03e4337 LP |
1963 | r = vtable_append_one_property(bus, m, m->path, c, v, u, &error); |
1964 | if (r < 0) | |
1965 | return r; | |
1966 | if (bus->nodes_modified) | |
1967 | return 0; | |
1968 | } | |
718db961 | 1969 | } |
992c052c LP |
1970 | } |
1971 | ||
718db961 LP |
1972 | if (!has_invalidating && !has_changing) |
1973 | return 0; | |
1974 | ||
992c052c LP |
1975 | r = sd_bus_message_close_container(m); |
1976 | if (r < 0) | |
1977 | return r; | |
1978 | ||
1979 | r = sd_bus_message_open_container(m, 'a', "s"); | |
1980 | if (r < 0) | |
1981 | return r; | |
1982 | ||
1983 | if (has_invalidating) { | |
718db961 LP |
1984 | LIST_FOREACH(vtables, c, n->vtables) { |
1985 | if (require_fallback && !c->is_fallback) | |
1986 | continue; | |
992c052c | 1987 | |
718db961 | 1988 | if (!streq(c->interface, interface)) |
992c052c LP |
1989 | continue; |
1990 | ||
f00c3121 | 1991 | r = node_vtable_get_userdata(bus, path, c, &u, &error); |
992c052c LP |
1992 | if (r < 0) |
1993 | return r; | |
718db961 LP |
1994 | if (bus->nodes_modified) |
1995 | return 0; | |
1996 | if (r == 0) | |
1997 | continue; | |
1998 | ||
a03e4337 LP |
1999 | if (names) { |
2000 | STRV_FOREACH(property, names) { | |
2001 | struct vtable_member *v; | |
718db961 | 2002 | |
a03e4337 LP |
2003 | key.member = *property; |
2004 | assert_se(v = hashmap_get(bus->vtable_properties, &key)); | |
2005 | assert(c == v->parent); | |
718db961 | 2006 | |
a03e4337 LP |
2007 | if (!(v->vtable->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION)) |
2008 | continue; | |
718db961 | 2009 | |
a03e4337 LP |
2010 | r = sd_bus_message_append(m, "s", *property); |
2011 | if (r < 0) | |
2012 | return r; | |
2013 | } | |
2014 | } else { | |
2015 | const sd_bus_vtable *v; | |
2016 | ||
2017 | for (v = c->vtable+1; v->type != _SD_BUS_VTABLE_END; v++) { | |
2018 | if (v->type != _SD_BUS_VTABLE_PROPERTY && v->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY) | |
2019 | continue; | |
2020 | ||
2021 | if (v->flags & SD_BUS_VTABLE_HIDDEN) | |
2022 | continue; | |
2023 | ||
2024 | if (!(v->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION)) | |
2025 | continue; | |
2026 | ||
2027 | r = sd_bus_message_append(m, "s", v->x.property.member); | |
2028 | if (r < 0) | |
2029 | return r; | |
2030 | } | |
718db961 | 2031 | } |
992c052c LP |
2032 | } |
2033 | } | |
2034 | ||
2035 | r = sd_bus_message_close_container(m); | |
2036 | if (r < 0) | |
2037 | return r; | |
2038 | ||
2039 | r = sd_bus_send(bus, m, NULL); | |
2040 | if (r < 0) | |
2041 | return r; | |
2042 | ||
2043 | return 1; | |
2044 | } | |
2045 | ||
d9f644e2 | 2046 | _public_ int sd_bus_emit_properties_changed_strv( |
dfa92725 LP |
2047 | sd_bus *bus, |
2048 | const char *path, | |
2049 | const char *interface, | |
2050 | char **names) { | |
2051 | ||
8ce2afd6 | 2052 | BUS_DONT_DESTROY(bus); |
46525bfc | 2053 | bool found_interface = false; |
92e189e5 | 2054 | char *prefix; |
992c052c LP |
2055 | int r; |
2056 | ||
dfa92725 LP |
2057 | assert_return(bus, -EINVAL); |
2058 | assert_return(object_path_is_valid(path), -EINVAL); | |
2059 | assert_return(interface_name_is_valid(interface), -EINVAL); | |
dfa92725 LP |
2060 | assert_return(!bus_pid_changed(bus), -ECHILD); |
2061 | ||
a3d59cd1 LP |
2062 | if (!BUS_IS_OPEN(bus->state)) |
2063 | return -ENOTCONN; | |
a03e4337 LP |
2064 | |
2065 | /* A non-NULL but empty names list means nothing needs to be | |
2066 | generated. A NULL list OTOH indicates that all properties | |
2067 | that are set to EMITS_CHANGE or EMITS_INVALIDATION shall be | |
2068 | included in the PropertiesChanged message. */ | |
2069 | if (names && names[0] == NULL) | |
dfa92725 | 2070 | return 0; |
992c052c | 2071 | |
68313d3d LP |
2072 | do { |
2073 | bus->nodes_modified = false; | |
992c052c | 2074 | |
46525bfc | 2075 | r = emit_properties_changed_on_interface(bus, path, path, interface, false, &found_interface, names); |
92e189e5 LP |
2076 | if (r != 0) |
2077 | return r; | |
68313d3d LP |
2078 | if (bus->nodes_modified) |
2079 | continue; | |
2080 | ||
2081 | prefix = alloca(strlen(path) + 1); | |
2082 | OBJECT_PATH_FOREACH_PREFIX(prefix, path) { | |
46525bfc | 2083 | r = emit_properties_changed_on_interface(bus, prefix, path, interface, true, &found_interface, names); |
68313d3d LP |
2084 | if (r != 0) |
2085 | return r; | |
2086 | if (bus->nodes_modified) | |
2087 | break; | |
2088 | } | |
2089 | ||
2090 | } while (bus->nodes_modified); | |
992c052c | 2091 | |
46525bfc | 2092 | return found_interface ? 0 : -ENOENT; |
992c052c LP |
2093 | } |
2094 | ||
d9f644e2 | 2095 | _public_ int sd_bus_emit_properties_changed( |
dfa92725 LP |
2096 | sd_bus *bus, |
2097 | const char *path, | |
2098 | const char *interface, | |
2099 | const char *name, ...) { | |
2100 | ||
250a918d | 2101 | char **names; |
992c052c | 2102 | |
dfa92725 LP |
2103 | assert_return(bus, -EINVAL); |
2104 | assert_return(object_path_is_valid(path), -EINVAL); | |
2105 | assert_return(interface_name_is_valid(interface), -EINVAL); | |
dfa92725 LP |
2106 | assert_return(!bus_pid_changed(bus), -ECHILD); |
2107 | ||
a3d59cd1 LP |
2108 | if (!BUS_IS_OPEN(bus->state)) |
2109 | return -ENOTCONN; | |
2110 | ||
dfa92725 LP |
2111 | if (!name) |
2112 | return 0; | |
2113 | ||
250a918d | 2114 | names = strv_from_stdarg_alloca(name); |
992c052c LP |
2115 | |
2116 | return sd_bus_emit_properties_changed_strv(bus, path, interface, names); | |
2117 | } | |
2118 | ||
4be39163 LP |
2119 | static int interfaces_added_append_one_prefix( |
2120 | sd_bus *bus, | |
2121 | sd_bus_message *m, | |
2122 | const char *prefix, | |
2123 | const char *path, | |
2124 | const char *interface, | |
2125 | bool require_fallback) { | |
2126 | ||
2127 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; | |
718db961 | 2128 | bool found_interface = false; |
4be39163 LP |
2129 | struct node_vtable *c; |
2130 | struct node *n; | |
2131 | void *u = NULL; | |
2132 | int r; | |
2133 | ||
2134 | assert(bus); | |
2135 | assert(m); | |
2136 | assert(prefix); | |
2137 | assert(path); | |
2138 | assert(interface); | |
2139 | ||
2140 | n = hashmap_get(bus->nodes, prefix); | |
2141 | if (!n) | |
2142 | return 0; | |
2143 | ||
2144 | LIST_FOREACH(vtables, c, n->vtables) { | |
2145 | if (require_fallback && !c->is_fallback) | |
2146 | continue; | |
2147 | ||
718db961 LP |
2148 | if (!streq(c->interface, interface)) |
2149 | continue; | |
4be39163 | 2150 | |
f00c3121 | 2151 | r = node_vtable_get_userdata(bus, path, c, &u, &error); |
718db961 LP |
2152 | if (r < 0) |
2153 | return r; | |
2154 | if (bus->nodes_modified) | |
2155 | return 0; | |
2156 | if (r == 0) | |
2157 | continue; | |
4be39163 | 2158 | |
718db961 LP |
2159 | if (!found_interface) { |
2160 | r = sd_bus_message_append_basic(m, 's', interface); | |
2161 | if (r < 0) | |
2162 | return r; | |
4be39163 | 2163 | |
718db961 LP |
2164 | r = sd_bus_message_open_container(m, 'a', "{sv}"); |
2165 | if (r < 0) | |
2166 | return r; | |
4be39163 | 2167 | |
718db961 LP |
2168 | found_interface = true; |
2169 | } | |
4be39163 | 2170 | |
718db961 LP |
2171 | r = vtable_append_all_properties(bus, m, path, c, u, &error); |
2172 | if (r < 0) | |
2173 | return r; | |
2174 | if (bus->nodes_modified) | |
2175 | return 0; | |
2176 | } | |
4be39163 | 2177 | |
718db961 LP |
2178 | if (found_interface) { |
2179 | r = sd_bus_message_close_container(m); | |
2180 | if (r < 0) | |
2181 | return r; | |
2182 | } | |
4be39163 | 2183 | |
718db961 | 2184 | return found_interface; |
4be39163 LP |
2185 | } |
2186 | ||
2187 | static int interfaces_added_append_one( | |
2188 | sd_bus *bus, | |
2189 | sd_bus_message *m, | |
2190 | const char *path, | |
2191 | const char *interface) { | |
2192 | ||
2193 | char *prefix; | |
2194 | int r; | |
2195 | ||
2196 | assert(bus); | |
2197 | assert(m); | |
2198 | assert(path); | |
2199 | assert(interface); | |
2200 | ||
2201 | r = interfaces_added_append_one_prefix(bus, m, path, path, interface, false); | |
2202 | if (r != 0) | |
2203 | return r; | |
68313d3d LP |
2204 | if (bus->nodes_modified) |
2205 | return 0; | |
4be39163 LP |
2206 | |
2207 | prefix = alloca(strlen(path) + 1); | |
2208 | OBJECT_PATH_FOREACH_PREFIX(prefix, path) { | |
2209 | r = interfaces_added_append_one_prefix(bus, m, prefix, path, interface, true); | |
2210 | if (r != 0) | |
2211 | return r; | |
68313d3d LP |
2212 | if (bus->nodes_modified) |
2213 | return 0; | |
4be39163 LP |
2214 | } |
2215 | ||
2216 | return -ENOENT; | |
992c052c LP |
2217 | } |
2218 | ||
d9f644e2 | 2219 | _public_ int sd_bus_emit_interfaces_added_strv(sd_bus *bus, const char *path, char **interfaces) { |
8ce2afd6 LP |
2220 | BUS_DONT_DESTROY(bus); |
2221 | ||
4be39163 LP |
2222 | _cleanup_bus_message_unref_ sd_bus_message *m = NULL; |
2223 | char **i; | |
2224 | int r; | |
2225 | ||
2226 | assert_return(bus, -EINVAL); | |
2227 | assert_return(object_path_is_valid(path), -EINVAL); | |
4be39163 LP |
2228 | assert_return(!bus_pid_changed(bus), -ECHILD); |
2229 | ||
a3d59cd1 LP |
2230 | if (!BUS_IS_OPEN(bus->state)) |
2231 | return -ENOTCONN; | |
2232 | ||
4be39163 LP |
2233 | if (strv_isempty(interfaces)) |
2234 | return 0; | |
2235 | ||
68313d3d LP |
2236 | do { |
2237 | bus->nodes_modified = false; | |
1b02f301 | 2238 | m = sd_bus_message_unref(m); |
4be39163 | 2239 | |
151b9b96 | 2240 | r = sd_bus_message_new_signal(bus, &m, path, "org.freedesktop.DBus.ObjectManager", "InterfacesAdded"); |
68313d3d LP |
2241 | if (r < 0) |
2242 | return r; | |
4be39163 | 2243 | |
68313d3d | 2244 | r = sd_bus_message_append_basic(m, 'o', path); |
4be39163 LP |
2245 | if (r < 0) |
2246 | return r; | |
2247 | ||
68313d3d | 2248 | r = sd_bus_message_open_container(m, 'a', "{sa{sv}}"); |
4be39163 LP |
2249 | if (r < 0) |
2250 | return r; | |
2251 | ||
68313d3d LP |
2252 | STRV_FOREACH(i, interfaces) { |
2253 | assert_return(interface_name_is_valid(*i), -EINVAL); | |
2254 | ||
2255 | r = sd_bus_message_open_container(m, 'e', "sa{sv}"); | |
2256 | if (r < 0) | |
2257 | return r; | |
2258 | ||
2259 | r = interfaces_added_append_one(bus, m, path, *i); | |
2260 | if (r < 0) | |
2261 | return r; | |
2262 | ||
2263 | if (bus->nodes_modified) | |
2264 | break; | |
2265 | ||
2266 | r = sd_bus_message_close_container(m); | |
2267 | if (r < 0) | |
2268 | return r; | |
2269 | } | |
2270 | ||
2271 | if (bus->nodes_modified) | |
2272 | continue; | |
2273 | ||
4be39163 LP |
2274 | r = sd_bus_message_close_container(m); |
2275 | if (r < 0) | |
2276 | return r; | |
4be39163 | 2277 | |
68313d3d | 2278 | } while (bus->nodes_modified); |
4be39163 LP |
2279 | |
2280 | return sd_bus_send(bus, m, NULL); | |
2281 | } | |
2282 | ||
d9f644e2 | 2283 | _public_ int sd_bus_emit_interfaces_added(sd_bus *bus, const char *path, const char *interface, ...) { |
250a918d | 2284 | char **interfaces; |
4be39163 LP |
2285 | |
2286 | assert_return(bus, -EINVAL); | |
2287 | assert_return(object_path_is_valid(path), -EINVAL); | |
4be39163 LP |
2288 | assert_return(!bus_pid_changed(bus), -ECHILD); |
2289 | ||
a3d59cd1 LP |
2290 | if (!BUS_IS_OPEN(bus->state)) |
2291 | return -ENOTCONN; | |
2292 | ||
250a918d | 2293 | interfaces = strv_from_stdarg_alloca(interface); |
4be39163 LP |
2294 | |
2295 | return sd_bus_emit_interfaces_added_strv(bus, path, interfaces); | |
2296 | } | |
2297 | ||
d9f644e2 | 2298 | _public_ int sd_bus_emit_interfaces_removed_strv(sd_bus *bus, const char *path, char **interfaces) { |
4be39163 LP |
2299 | _cleanup_bus_message_unref_ sd_bus_message *m = NULL; |
2300 | int r; | |
2301 | ||
2302 | assert_return(bus, -EINVAL); | |
2303 | assert_return(object_path_is_valid(path), -EINVAL); | |
4be39163 LP |
2304 | assert_return(!bus_pid_changed(bus), -ECHILD); |
2305 | ||
a3d59cd1 LP |
2306 | if (!BUS_IS_OPEN(bus->state)) |
2307 | return -ENOTCONN; | |
2308 | ||
4be39163 LP |
2309 | if (strv_isempty(interfaces)) |
2310 | return 0; | |
2311 | ||
151b9b96 | 2312 | r = sd_bus_message_new_signal(bus, &m, path, "org.freedesktop.DBus.ObjectManager", "InterfacesRemoved"); |
4be39163 LP |
2313 | if (r < 0) |
2314 | return r; | |
2315 | ||
2316 | r = sd_bus_message_append_basic(m, 'o', path); | |
2317 | if (r < 0) | |
2318 | return r; | |
2319 | ||
2320 | r = sd_bus_message_append_strv(m, interfaces); | |
2321 | if (r < 0) | |
2322 | return r; | |
2323 | ||
2324 | return sd_bus_send(bus, m, NULL); | |
2325 | } | |
2326 | ||
d9f644e2 | 2327 | _public_ int sd_bus_emit_interfaces_removed(sd_bus *bus, const char *path, const char *interface, ...) { |
250a918d | 2328 | char **interfaces; |
4be39163 LP |
2329 | |
2330 | assert_return(bus, -EINVAL); | |
2331 | assert_return(object_path_is_valid(path), -EINVAL); | |
4be39163 LP |
2332 | assert_return(!bus_pid_changed(bus), -ECHILD); |
2333 | ||
a3d59cd1 LP |
2334 | if (!BUS_IS_OPEN(bus->state)) |
2335 | return -ENOTCONN; | |
2336 | ||
250a918d | 2337 | interfaces = strv_from_stdarg_alloca(interface); |
4be39163 LP |
2338 | |
2339 | return sd_bus_emit_interfaces_removed_strv(bus, path, interfaces); | |
992c052c LP |
2340 | } |
2341 | ||
19befb2d LP |
2342 | _public_ int sd_bus_add_object_manager(sd_bus *bus, sd_bus_slot **slot, const char *path) { |
2343 | sd_bus_slot *s; | |
992c052c | 2344 | struct node *n; |
19befb2d | 2345 | int r; |
992c052c | 2346 | |
dfa92725 LP |
2347 | assert_return(bus, -EINVAL); |
2348 | assert_return(object_path_is_valid(path), -EINVAL); | |
2349 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
992c052c LP |
2350 | |
2351 | n = bus_node_allocate(bus, path); | |
2352 | if (!n) | |
2353 | return -ENOMEM; | |
2354 | ||
19befb2d LP |
2355 | s = bus_slot_allocate(bus, !slot, BUS_NODE_OBJECT_MANAGER, sizeof(struct node_object_manager), NULL); |
2356 | if (!s) { | |
2357 | r = -ENOMEM; | |
2358 | goto fail; | |
2359 | } | |
992c052c | 2360 | |
19befb2d LP |
2361 | s->node_object_manager.node = n; |
2362 | LIST_PREPEND(object_managers, n->object_managers, &s->node_object_manager); | |
2363 | bus->nodes_modified = true; | |
992c052c | 2364 | |
19befb2d LP |
2365 | if (slot) |
2366 | *slot = s; | |
992c052c | 2367 | |
19befb2d | 2368 | return 0; |
992c052c | 2369 | |
19befb2d LP |
2370 | fail: |
2371 | sd_bus_slot_unref(s); | |
992c052c | 2372 | bus_node_gc(bus, n); |
dfa92725 | 2373 | |
19befb2d | 2374 | return r; |
992c052c | 2375 | } |