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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) { |
1b64f838 | 53 | bus->current_slot = sd_bus_slot_ref(s); |
f00c3121 | 54 | r = c->find(bus, path, c->interface, u, &u, error); |
1b64f838 | 55 | bus->current_slot = sd_bus_slot_unref(s); |
19befb2d | 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; | |
1b64f838 | 118 | sd_bus_slot *slot; |
992c052c | 119 | |
68313d3d LP |
120 | if (bus->nodes_modified) |
121 | return 0; | |
122 | ||
1b64f838 LP |
123 | slot = container_of(c, sd_bus_slot, node_enumerator); |
124 | ||
125 | bus->current_slot = sd_bus_slot_ref(slot); | |
126 | r = c->callback(bus, prefix, slot->userdata, &children, error); | |
127 | bus->current_slot = sd_bus_slot_unref(slot); | |
19befb2d | 128 | |
992c052c LP |
129 | if (r < 0) |
130 | return r; | |
f00c3121 | 131 | if (sd_bus_error_is_set(error)) |
5958d089 | 132 | return -sd_bus_error_get_errno(error); |
992c052c LP |
133 | |
134 | STRV_FOREACH(k, children) { | |
135 | if (r < 0) { | |
136 | free(*k); | |
137 | continue; | |
138 | } | |
139 | ||
5d66866d | 140 | if (!object_path_is_valid(*k)){ |
992c052c LP |
141 | free(*k); |
142 | r = -EINVAL; | |
143 | continue; | |
144 | } | |
145 | ||
5d66866d LP |
146 | if (!object_path_startswith(*k, prefix)) { |
147 | free(*k); | |
148 | continue; | |
149 | } | |
150 | ||
992c052c | 151 | r = set_consume(s, *k); |
52c7f2b2 LP |
152 | if (r == -EEXIST) |
153 | r = 0; | |
992c052c LP |
154 | } |
155 | ||
156 | free(children); | |
157 | if (r < 0) | |
158 | return r; | |
159 | } | |
160 | ||
161 | return 0; | |
162 | } | |
163 | ||
dfa92725 LP |
164 | static int add_subtree_to_set( |
165 | sd_bus *bus, | |
166 | const char *prefix, | |
167 | struct node *n, | |
f00c3121 LP |
168 | Set *s, |
169 | sd_bus_error *error) { | |
dfa92725 | 170 | |
992c052c LP |
171 | struct node *i; |
172 | int r; | |
173 | ||
174 | assert(bus); | |
175 | assert(prefix); | |
176 | assert(n); | |
177 | assert(s); | |
178 | ||
f00c3121 | 179 | r = add_enumerated_to_set(bus, prefix, n->enumerators, s, error); |
992c052c LP |
180 | if (r < 0) |
181 | return r; | |
68313d3d LP |
182 | if (bus->nodes_modified) |
183 | return 0; | |
992c052c LP |
184 | |
185 | LIST_FOREACH(siblings, i, n->child) { | |
186 | char *t; | |
187 | ||
5d66866d LP |
188 | if (!object_path_startswith(i->path, prefix)) |
189 | continue; | |
190 | ||
992c052c LP |
191 | t = strdup(i->path); |
192 | if (!t) | |
193 | return -ENOMEM; | |
194 | ||
195 | r = set_consume(s, t); | |
196 | if (r < 0 && r != -EEXIST) | |
197 | return r; | |
198 | ||
f00c3121 | 199 | r = add_subtree_to_set(bus, prefix, i, s, error); |
992c052c LP |
200 | if (r < 0) |
201 | return r; | |
68313d3d LP |
202 | if (bus->nodes_modified) |
203 | return 0; | |
992c052c LP |
204 | } |
205 | ||
206 | return 0; | |
207 | } | |
208 | ||
dfa92725 LP |
209 | static int get_child_nodes( |
210 | sd_bus *bus, | |
211 | const char *prefix, | |
212 | struct node *n, | |
f00c3121 LP |
213 | Set **_s, |
214 | sd_bus_error *error) { | |
dfa92725 | 215 | |
992c052c LP |
216 | Set *s = NULL; |
217 | int r; | |
218 | ||
219 | assert(bus); | |
dfa92725 | 220 | assert(prefix); |
992c052c LP |
221 | assert(n); |
222 | assert(_s); | |
223 | ||
224 | s = set_new(string_hash_func, string_compare_func); | |
225 | if (!s) | |
226 | return -ENOMEM; | |
227 | ||
f00c3121 | 228 | r = add_subtree_to_set(bus, prefix, n, s, error); |
992c052c LP |
229 | if (r < 0) { |
230 | set_free_free(s); | |
231 | return r; | |
232 | } | |
233 | ||
234 | *_s = s; | |
235 | return 0; | |
236 | } | |
237 | ||
238 | static int node_callbacks_run( | |
239 | sd_bus *bus, | |
240 | sd_bus_message *m, | |
241 | struct node_callback *first, | |
242 | bool require_fallback, | |
243 | bool *found_object) { | |
244 | ||
245 | struct node_callback *c; | |
246 | int r; | |
247 | ||
248 | assert(bus); | |
249 | assert(m); | |
250 | assert(found_object); | |
251 | ||
252 | LIST_FOREACH(callbacks, c, first) { | |
ebcf1f97 | 253 | _cleanup_bus_error_free_ sd_bus_error error_buffer = SD_BUS_ERROR_NULL; |
1b64f838 | 254 | sd_bus_slot *slot; |
ebcf1f97 | 255 | |
68313d3d LP |
256 | if (bus->nodes_modified) |
257 | return 0; | |
258 | ||
992c052c LP |
259 | if (require_fallback && !c->is_fallback) |
260 | continue; | |
261 | ||
262 | *found_object = true; | |
263 | ||
264 | if (c->last_iteration == bus->iteration_counter) | |
265 | continue; | |
266 | ||
68313d3d LP |
267 | c->last_iteration = bus->iteration_counter; |
268 | ||
992c052c LP |
269 | r = sd_bus_message_rewind(m, true); |
270 | if (r < 0) | |
271 | return r; | |
272 | ||
1b64f838 LP |
273 | slot = container_of(c, sd_bus_slot, node_callback); |
274 | ||
275 | bus->current_slot = sd_bus_slot_ref(slot); | |
276 | r = c->callback(bus, m, slot->userdata, &error_buffer); | |
277 | bus->current_slot = sd_bus_slot_unref(slot); | |
19befb2d | 278 | |
ebcf1f97 | 279 | r = bus_maybe_reply_error(m, r, &error_buffer); |
992c052c LP |
280 | if (r != 0) |
281 | return r; | |
282 | } | |
283 | ||
284 | return 0; | |
285 | } | |
286 | ||
adacb957 LP |
287 | #define CAPABILITY_SHIFT(x) (((x) >> __builtin_ctzll(_SD_BUS_VTABLE_CAPABILITY_MASK)) & 0xFFFF) |
288 | ||
289 | static int check_access(sd_bus *bus, sd_bus_message *m, struct vtable_member *c, sd_bus_error *error) { | |
290 | _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL; | |
291 | uint64_t cap; | |
292 | uid_t uid; | |
293 | int r; | |
294 | ||
295 | assert(bus); | |
296 | assert(m); | |
297 | assert(c); | |
298 | ||
299 | /* If the entire bus is trusted let's grant access */ | |
300 | if (bus->trusted) | |
301 | return 0; | |
302 | ||
303 | /* If the member is marked UNPRIVILEGED let's grant access */ | |
304 | if (c->vtable->flags & SD_BUS_VTABLE_UNPRIVILEGED) | |
305 | return 0; | |
306 | ||
307 | /* If we are not connected to kdbus we cannot retrieve the | |
308 | * effective capability set without race. Since we need this | |
309 | * for a security decision we cannot use racy data, hence | |
310 | * don't request it. */ | |
311 | if (bus->is_kernel) | |
312 | r = sd_bus_query_sender_creds(m, SD_BUS_CREDS_UID|SD_BUS_CREDS_EFFECTIVE_CAPS, &creds); | |
313 | else | |
314 | r = sd_bus_query_sender_creds(m, SD_BUS_CREDS_UID, &creds); | |
315 | if (r < 0) | |
316 | return r; | |
317 | ||
318 | /* Check have the caller has the requested capability | |
319 | * set. Note that the flags value contains the capability | |
320 | * number plus one, which we need to subtract here. We do this | |
321 | * so that we have 0 as special value for "default | |
322 | * capability". */ | |
323 | cap = CAPABILITY_SHIFT(c->vtable->flags); | |
324 | if (cap == 0) | |
325 | cap = CAPABILITY_SHIFT(c->parent->vtable[0].flags); | |
326 | if (cap == 0) | |
327 | cap = CAP_SYS_ADMIN; | |
328 | else | |
329 | cap --; | |
330 | ||
331 | r = sd_bus_creds_has_effective_cap(creds, cap); | |
332 | if (r > 0) | |
333 | return 1; | |
334 | ||
335 | /* Caller has same UID as us, then let's grant access */ | |
336 | r = sd_bus_creds_get_uid(creds, &uid); | |
337 | if (r >= 0) { | |
338 | if (uid == getuid()) | |
339 | return 1; | |
340 | } | |
341 | ||
342 | return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Access to %s.%s() not permitted.", c->interface, c->member); | |
343 | } | |
344 | ||
992c052c LP |
345 | static int method_callbacks_run( |
346 | sd_bus *bus, | |
347 | sd_bus_message *m, | |
348 | struct vtable_member *c, | |
349 | bool require_fallback, | |
350 | bool *found_object) { | |
351 | ||
f00c3121 | 352 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
992c052c LP |
353 | const char *signature; |
354 | void *u; | |
355 | int r; | |
356 | ||
357 | assert(bus); | |
358 | assert(m); | |
359 | assert(c); | |
360 | assert(found_object); | |
361 | ||
362 | if (require_fallback && !c->parent->is_fallback) | |
363 | return 0; | |
364 | ||
adacb957 LP |
365 | r = check_access(bus, m, c, &error); |
366 | if (r < 0) | |
367 | return bus_maybe_reply_error(m, r, &error); | |
368 | ||
f00c3121 | 369 | r = node_vtable_get_userdata(bus, m->path, c->parent, &u, &error); |
992c052c | 370 | if (r <= 0) |
f00c3121 | 371 | return bus_maybe_reply_error(m, r, &error); |
68313d3d LP |
372 | if (bus->nodes_modified) |
373 | return 0; | |
992c052c LP |
374 | |
375 | *found_object = true; | |
376 | ||
68313d3d LP |
377 | if (c->last_iteration == bus->iteration_counter) |
378 | return 0; | |
379 | ||
380 | c->last_iteration = bus->iteration_counter; | |
381 | ||
992c052c LP |
382 | r = sd_bus_message_rewind(m, true); |
383 | if (r < 0) | |
384 | return r; | |
385 | ||
40ca29a1 LP |
386 | signature = sd_bus_message_get_signature(m, true); |
387 | if (!signature) | |
388 | return -EINVAL; | |
992c052c | 389 | |
f00c3121 | 390 | if (!streq(strempty(c->vtable->x.method.signature), signature)) |
86b8d289 LP |
391 | return sd_bus_reply_method_errorf( |
392 | m, | |
393 | SD_BUS_ERROR_INVALID_ARGS, | |
394 | "Invalid arguments '%s' to call %s.%s(), expecting '%s'.", | |
395 | signature, c->interface, c->member, strempty(c->vtable->x.method.signature)); | |
992c052c | 396 | |
6717d473 LP |
397 | /* Keep track what the signature of the reply to this message |
398 | * should be, so that this can be enforced when sealing the | |
399 | * reply. */ | |
400 | m->enforced_reply_signature = strempty(c->vtable->x.method.result); | |
401 | ||
ebcf1f97 | 402 | if (c->vtable->x.method.handler) { |
1b64f838 LP |
403 | sd_bus_slot *slot; |
404 | ||
405 | slot = container_of(c->parent, sd_bus_slot, node_vtable); | |
19befb2d | 406 | |
1b64f838 | 407 | bus->current_slot = sd_bus_slot_ref(slot); |
f00c3121 | 408 | r = c->vtable->x.method.handler(bus, m, u, &error); |
1b64f838 | 409 | bus->current_slot = sd_bus_slot_unref(slot); |
19befb2d | 410 | |
f00c3121 | 411 | return bus_maybe_reply_error(m, r, &error); |
ebcf1f97 | 412 | } |
992c052c LP |
413 | |
414 | /* If the method callback is NULL, make this a successful NOP */ | |
df2d202e | 415 | r = sd_bus_reply_method_return(m, NULL); |
992c052c LP |
416 | if (r < 0) |
417 | return r; | |
418 | ||
419 | return 1; | |
420 | } | |
421 | ||
422 | static int invoke_property_get( | |
423 | sd_bus *bus, | |
19befb2d | 424 | sd_bus_slot *slot, |
992c052c LP |
425 | const sd_bus_vtable *v, |
426 | const char *path, | |
427 | const char *interface, | |
428 | const char *property, | |
ebcf1f97 LP |
429 | sd_bus_message *reply, |
430 | void *userdata, | |
431 | sd_bus_error *error) { | |
992c052c | 432 | |
af8601fa | 433 | const void *p; |
f00c3121 | 434 | int r; |
992c052c LP |
435 | |
436 | assert(bus); | |
19befb2d | 437 | assert(slot); |
992c052c | 438 | assert(v); |
dfa92725 LP |
439 | assert(path); |
440 | assert(interface); | |
441 | assert(property); | |
ebcf1f97 | 442 | assert(reply); |
992c052c | 443 | |
f00c3121 | 444 | if (v->x.property.get) { |
19befb2d | 445 | |
1b64f838 | 446 | bus->current_slot = sd_bus_slot_ref(slot); |
f00c3121 | 447 | r = v->x.property.get(bus, path, interface, property, reply, userdata, error); |
1b64f838 | 448 | bus->current_slot = sd_bus_slot_unref(slot); |
19befb2d | 449 | |
f00c3121 LP |
450 | if (r < 0) |
451 | return r; | |
452 | if (sd_bus_error_is_set(error)) | |
5958d089 | 453 | return -sd_bus_error_get_errno(error); |
f00c3121 LP |
454 | return r; |
455 | } | |
992c052c LP |
456 | |
457 | /* Automatic handling if no callback is defined. */ | |
458 | ||
c13c7de3 | 459 | if (streq(v->x.property.signature, "as")) |
ebcf1f97 | 460 | return sd_bus_message_append_strv(reply, *(char***) userdata); |
c13c7de3 | 461 | |
77a874a3 LP |
462 | assert(signature_is_single(v->x.property.signature, false)); |
463 | assert(bus_type_is_basic(v->x.property.signature[0])); | |
992c052c | 464 | |
77a874a3 | 465 | switch (v->x.property.signature[0]) { |
992c052c LP |
466 | |
467 | case SD_BUS_TYPE_STRING: | |
28d6633a LP |
468 | case SD_BUS_TYPE_SIGNATURE: |
469 | p = strempty(*(char**) userdata); | |
af8601fa KS |
470 | break; |
471 | ||
992c052c | 472 | case SD_BUS_TYPE_OBJECT_PATH: |
992c052c | 473 | p = *(char**) userdata; |
28d6633a | 474 | assert(p); |
992c052c LP |
475 | break; |
476 | ||
477 | default: | |
478 | p = userdata; | |
479 | break; | |
480 | } | |
481 | ||
ebcf1f97 | 482 | return sd_bus_message_append_basic(reply, v->x.property.signature[0], p); |
992c052c LP |
483 | } |
484 | ||
485 | static int invoke_property_set( | |
486 | sd_bus *bus, | |
19befb2d | 487 | sd_bus_slot *slot, |
992c052c LP |
488 | const sd_bus_vtable *v, |
489 | const char *path, | |
490 | const char *interface, | |
491 | const char *property, | |
492 | sd_bus_message *value, | |
ebcf1f97 LP |
493 | void *userdata, |
494 | sd_bus_error *error) { | |
992c052c LP |
495 | |
496 | int r; | |
497 | ||
498 | assert(bus); | |
19befb2d | 499 | assert(slot); |
992c052c | 500 | assert(v); |
dfa92725 LP |
501 | assert(path); |
502 | assert(interface); | |
503 | assert(property); | |
504 | assert(value); | |
992c052c | 505 | |
f00c3121 | 506 | if (v->x.property.set) { |
19befb2d | 507 | |
1b64f838 | 508 | bus->current_slot = sd_bus_slot_ref(slot); |
f00c3121 | 509 | r = v->x.property.set(bus, path, interface, property, value, userdata, error); |
1b64f838 | 510 | bus->current_slot = sd_bus_slot_unref(slot); |
19befb2d | 511 | |
f00c3121 LP |
512 | if (r < 0) |
513 | return r; | |
514 | if (sd_bus_error_is_set(error)) | |
5958d089 | 515 | return -sd_bus_error_get_errno(error); |
f00c3121 LP |
516 | return r; |
517 | } | |
992c052c LP |
518 | |
519 | /* Automatic handling if no callback is defined. */ | |
520 | ||
77a874a3 LP |
521 | assert(signature_is_single(v->x.property.signature, false)); |
522 | assert(bus_type_is_basic(v->x.property.signature[0])); | |
992c052c | 523 | |
77a874a3 | 524 | switch (v->x.property.signature[0]) { |
992c052c LP |
525 | |
526 | case SD_BUS_TYPE_STRING: | |
527 | case SD_BUS_TYPE_OBJECT_PATH: | |
528 | case SD_BUS_TYPE_SIGNATURE: { | |
529 | const char *p; | |
530 | char *n; | |
531 | ||
77a874a3 | 532 | r = sd_bus_message_read_basic(value, v->x.property.signature[0], &p); |
992c052c LP |
533 | if (r < 0) |
534 | return r; | |
535 | ||
536 | n = strdup(p); | |
537 | if (!n) | |
538 | return -ENOMEM; | |
539 | ||
540 | free(*(char**) userdata); | |
541 | *(char**) userdata = n; | |
542 | ||
543 | break; | |
544 | } | |
545 | ||
546 | default: | |
77a874a3 | 547 | r = sd_bus_message_read_basic(value, v->x.property.signature[0], userdata); |
992c052c LP |
548 | if (r < 0) |
549 | return r; | |
550 | ||
551 | break; | |
552 | } | |
553 | ||
554 | return 1; | |
555 | } | |
556 | ||
557 | static int property_get_set_callbacks_run( | |
558 | sd_bus *bus, | |
559 | sd_bus_message *m, | |
560 | struct vtable_member *c, | |
561 | bool require_fallback, | |
562 | bool is_get, | |
563 | bool *found_object) { | |
564 | ||
992c052c | 565 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
ebcf1f97 | 566 | _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; |
19befb2d | 567 | sd_bus_slot *slot; |
c94d7fc3 | 568 | void *u = NULL; |
992c052c LP |
569 | int r; |
570 | ||
571 | assert(bus); | |
572 | assert(m); | |
dfa92725 | 573 | assert(c); |
992c052c LP |
574 | assert(found_object); |
575 | ||
576 | if (require_fallback && !c->parent->is_fallback) | |
577 | return 0; | |
578 | ||
f00c3121 | 579 | r = vtable_property_get_userdata(bus, m->path, c, &u, &error); |
992c052c | 580 | if (r <= 0) |
f00c3121 | 581 | return bus_maybe_reply_error(m, r, &error); |
68313d3d LP |
582 | if (bus->nodes_modified) |
583 | return 0; | |
992c052c | 584 | |
19befb2d LP |
585 | slot = container_of(c->parent, sd_bus_slot, node_vtable); |
586 | ||
992c052c LP |
587 | *found_object = true; |
588 | ||
df2d202e | 589 | r = sd_bus_message_new_method_return(m, &reply); |
992c052c LP |
590 | if (r < 0) |
591 | return r; | |
592 | ||
992c052c | 593 | if (is_get) { |
68313d3d LP |
594 | /* Note that we do not protect against reexecution |
595 | * here (using the last_iteration check, see below), | |
596 | * should the node tree have changed and we got called | |
597 | * again. We assume that property Get() calls are | |
598 | * ultimately without side-effects or if they aren't | |
599 | * then at least idempotent. */ | |
600 | ||
77a874a3 | 601 | r = sd_bus_message_open_container(reply, 'v', c->vtable->x.property.signature); |
992c052c LP |
602 | if (r < 0) |
603 | return r; | |
604 | ||
adacb957 LP |
605 | /* Note that we do not do an access check here. Read |
606 | * access to properties is always unrestricted, since | |
607 | * PropertiesChanged signals broadcast contents | |
608 | * anyway. */ | |
609 | ||
19befb2d | 610 | r = invoke_property_get(bus, slot, c->vtable, m->path, c->interface, c->member, reply, u, &error); |
992c052c | 611 | if (r < 0) |
f00c3121 | 612 | return bus_maybe_reply_error(m, r, &error); |
992c052c | 613 | |
68313d3d LP |
614 | if (bus->nodes_modified) |
615 | return 0; | |
616 | ||
992c052c LP |
617 | r = sd_bus_message_close_container(reply); |
618 | if (r < 0) | |
619 | return r; | |
620 | ||
621 | } else { | |
622 | if (c->vtable->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY) | |
ebcf1f97 | 623 | return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_PROPERTY_READ_ONLY, "Property '%s' is not writable.", c->member); |
68313d3d | 624 | |
ebcf1f97 LP |
625 | /* Avoid that we call the set routine more than once |
626 | * if the processing of this message got restarted | |
627 | * because the node tree changed. */ | |
628 | if (c->last_iteration == bus->iteration_counter) | |
629 | return 0; | |
992c052c | 630 | |
ebcf1f97 | 631 | c->last_iteration = bus->iteration_counter; |
992c052c | 632 | |
ebcf1f97 LP |
633 | r = sd_bus_message_enter_container(m, 'v', c->vtable->x.property.signature); |
634 | if (r < 0) | |
635 | return r; | |
992c052c | 636 | |
adacb957 LP |
637 | r = check_access(bus, m, c, &error); |
638 | if (r < 0) | |
639 | return bus_maybe_reply_error(m, r, &error); | |
640 | ||
19befb2d | 641 | r = invoke_property_set(bus, slot, c->vtable, m->path, c->interface, c->member, m, u, &error); |
ebcf1f97 | 642 | if (r < 0) |
f00c3121 | 643 | return bus_maybe_reply_error(m, r, &error); |
992c052c | 644 | |
68313d3d LP |
645 | if (bus->nodes_modified) |
646 | return 0; | |
647 | ||
992c052c LP |
648 | r = sd_bus_message_exit_container(m); |
649 | if (r < 0) | |
650 | return r; | |
651 | } | |
652 | ||
653 | r = sd_bus_send(bus, reply, NULL); | |
654 | if (r < 0) | |
655 | return r; | |
656 | ||
657 | return 1; | |
658 | } | |
659 | ||
a03e4337 LP |
660 | static int vtable_append_one_property( |
661 | sd_bus *bus, | |
662 | sd_bus_message *reply, | |
663 | const char *path, | |
664 | struct node_vtable *c, | |
665 | const sd_bus_vtable *v, | |
666 | void *userdata, | |
667 | sd_bus_error *error) { | |
668 | ||
19befb2d | 669 | sd_bus_slot *slot; |
a03e4337 LP |
670 | int r; |
671 | ||
672 | assert(bus); | |
673 | assert(reply); | |
674 | assert(path); | |
675 | assert(c); | |
676 | assert(v); | |
677 | ||
678 | r = sd_bus_message_open_container(reply, 'e', "sv"); | |
679 | if (r < 0) | |
680 | return r; | |
681 | ||
682 | r = sd_bus_message_append(reply, "s", v->x.property.member); | |
683 | if (r < 0) | |
684 | return r; | |
685 | ||
686 | r = sd_bus_message_open_container(reply, 'v', v->x.property.signature); | |
687 | if (r < 0) | |
688 | return r; | |
689 | ||
19befb2d LP |
690 | slot = container_of(c, sd_bus_slot, node_vtable); |
691 | ||
692 | r = invoke_property_get(bus, slot, v, path, c->interface, v->x.property.member, reply, vtable_property_convert_userdata(v, userdata), error); | |
a03e4337 LP |
693 | if (r < 0) |
694 | return r; | |
695 | if (bus->nodes_modified) | |
696 | return 0; | |
697 | ||
698 | r = sd_bus_message_close_container(reply); | |
699 | if (r < 0) | |
700 | return r; | |
701 | ||
702 | r = sd_bus_message_close_container(reply); | |
703 | if (r < 0) | |
704 | return r; | |
705 | ||
706 | return 0; | |
707 | } | |
708 | ||
992c052c LP |
709 | static int vtable_append_all_properties( |
710 | sd_bus *bus, | |
711 | sd_bus_message *reply, | |
712 | const char *path, | |
713 | struct node_vtable *c, | |
714 | void *userdata, | |
715 | sd_bus_error *error) { | |
716 | ||
717 | const sd_bus_vtable *v; | |
718 | int r; | |
719 | ||
720 | assert(bus); | |
721 | assert(reply); | |
dfa92725 | 722 | assert(path); |
992c052c LP |
723 | assert(c); |
724 | ||
6e8df5f0 LP |
725 | if (c->vtable[0].flags & SD_BUS_VTABLE_HIDDEN) |
726 | return 1; | |
727 | ||
992c052c LP |
728 | for (v = c->vtable+1; v->type != _SD_BUS_VTABLE_END; v++) { |
729 | if (v->type != _SD_BUS_VTABLE_PROPERTY && v->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY) | |
730 | continue; | |
731 | ||
6e8df5f0 LP |
732 | if (v->flags & SD_BUS_VTABLE_HIDDEN) |
733 | continue; | |
734 | ||
a03e4337 | 735 | r = vtable_append_one_property(bus, reply, path, c, v, userdata, error); |
f00c3121 LP |
736 | if (r < 0) |
737 | return r; | |
68313d3d LP |
738 | if (bus->nodes_modified) |
739 | return 0; | |
992c052c LP |
740 | } |
741 | ||
742 | return 1; | |
743 | } | |
744 | ||
745 | static int property_get_all_callbacks_run( | |
746 | sd_bus *bus, | |
747 | sd_bus_message *m, | |
748 | struct node_vtable *first, | |
749 | bool require_fallback, | |
750 | const char *iface, | |
751 | bool *found_object) { | |
752 | ||
753 | _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; | |
754 | struct node_vtable *c; | |
bd037038 | 755 | bool found_interface; |
992c052c LP |
756 | int r; |
757 | ||
758 | assert(bus); | |
759 | assert(m); | |
760 | assert(found_object); | |
761 | ||
df2d202e | 762 | r = sd_bus_message_new_method_return(m, &reply); |
992c052c LP |
763 | if (r < 0) |
764 | return r; | |
765 | ||
766 | r = sd_bus_message_open_container(reply, 'a', "{sv}"); | |
767 | if (r < 0) | |
768 | return r; | |
769 | ||
38911893 | 770 | found_interface = !iface || |
bd037038 LP |
771 | streq(iface, "org.freedesktop.DBus.Properties") || |
772 | streq(iface, "org.freedesktop.DBus.Peer") || | |
773 | streq(iface, "org.freedesktop.DBus.Introspectable"); | |
774 | ||
992c052c LP |
775 | LIST_FOREACH(vtables, c, first) { |
776 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; | |
777 | void *u; | |
778 | ||
779 | if (require_fallback && !c->is_fallback) | |
780 | continue; | |
781 | ||
f00c3121 | 782 | r = node_vtable_get_userdata(bus, m->path, c, &u, &error); |
992c052c | 783 | if (r < 0) |
f00c3121 | 784 | return bus_maybe_reply_error(m, r, &error); |
68313d3d LP |
785 | if (bus->nodes_modified) |
786 | return 0; | |
992c052c LP |
787 | if (r == 0) |
788 | continue; | |
789 | ||
790 | *found_object = true; | |
791 | ||
792 | if (iface && !streq(c->interface, iface)) | |
793 | continue; | |
794 | found_interface = true; | |
795 | ||
992c052c LP |
796 | r = vtable_append_all_properties(bus, reply, m->path, c, u, &error); |
797 | if (r < 0) | |
f00c3121 | 798 | return bus_maybe_reply_error(m, r, &error); |
68313d3d LP |
799 | if (bus->nodes_modified) |
800 | return 0; | |
992c052c LP |
801 | } |
802 | ||
803 | if (!found_interface) { | |
804 | r = sd_bus_reply_method_errorf( | |
df2d202e | 805 | m, |
40ca29a1 | 806 | SD_BUS_ERROR_UNKNOWN_INTERFACE, |
992c052c LP |
807 | "Unknown interface '%s'.", iface); |
808 | if (r < 0) | |
809 | return r; | |
810 | ||
811 | return 1; | |
812 | } | |
813 | ||
814 | r = sd_bus_message_close_container(reply); | |
815 | if (r < 0) | |
816 | return r; | |
817 | ||
818 | r = sd_bus_send(bus, reply, NULL); | |
819 | if (r < 0) | |
820 | return r; | |
821 | ||
822 | return 1; | |
823 | } | |
824 | ||
825 | static bool bus_node_with_object_manager(sd_bus *bus, struct node *n) { | |
826 | assert(bus); | |
dfa92725 | 827 | assert(n); |
992c052c | 828 | |
19befb2d | 829 | if (n->object_managers) |
992c052c LP |
830 | return true; |
831 | ||
832 | if (n->parent) | |
833 | return bus_node_with_object_manager(bus, n->parent); | |
834 | ||
835 | return false; | |
836 | } | |
837 | ||
dfa92725 LP |
838 | static bool bus_node_exists( |
839 | sd_bus *bus, | |
840 | struct node *n, | |
841 | const char *path, | |
842 | bool require_fallback) { | |
843 | ||
992c052c LP |
844 | struct node_vtable *c; |
845 | struct node_callback *k; | |
846 | ||
847 | assert(bus); | |
848 | assert(n); | |
dfa92725 | 849 | assert(path); |
992c052c LP |
850 | |
851 | /* Tests if there's anything attached directly to this node | |
852 | * for the specified path */ | |
853 | ||
854 | LIST_FOREACH(callbacks, k, n->callbacks) { | |
855 | if (require_fallback && !k->is_fallback) | |
856 | continue; | |
857 | ||
858 | return true; | |
859 | } | |
860 | ||
861 | LIST_FOREACH(vtables, c, n->vtables) { | |
f00c3121 | 862 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
992c052c LP |
863 | |
864 | if (require_fallback && !c->is_fallback) | |
865 | continue; | |
866 | ||
f00c3121 | 867 | if (node_vtable_get_userdata(bus, path, c, NULL, &error) > 0) |
992c052c | 868 | return true; |
68313d3d LP |
869 | if (bus->nodes_modified) |
870 | return false; | |
992c052c LP |
871 | } |
872 | ||
19befb2d | 873 | return !require_fallback && (n->enumerators || n->object_managers); |
992c052c LP |
874 | } |
875 | ||
876 | static int process_introspect( | |
877 | sd_bus *bus, | |
878 | sd_bus_message *m, | |
879 | struct node *n, | |
880 | bool require_fallback, | |
881 | bool *found_object) { | |
882 | ||
f00c3121 | 883 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
992c052c LP |
884 | _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; |
885 | _cleanup_set_free_free_ Set *s = NULL; | |
718db961 | 886 | const char *previous_interface = NULL; |
992c052c LP |
887 | struct introspect intro; |
888 | struct node_vtable *c; | |
889 | bool empty; | |
890 | int r; | |
891 | ||
892 | assert(bus); | |
893 | assert(m); | |
894 | assert(n); | |
895 | assert(found_object); | |
896 | ||
f00c3121 | 897 | r = get_child_nodes(bus, m->path, n, &s, &error); |
992c052c | 898 | if (r < 0) |
f00c3121 | 899 | return bus_maybe_reply_error(m, r, &error); |
68313d3d LP |
900 | if (bus->nodes_modified) |
901 | return 0; | |
992c052c | 902 | |
7fb411f0 | 903 | r = introspect_begin(&intro, bus->trusted); |
992c052c LP |
904 | if (r < 0) |
905 | return r; | |
906 | ||
907 | r = introspect_write_default_interfaces(&intro, bus_node_with_object_manager(bus, n)); | |
908 | if (r < 0) | |
909 | return r; | |
910 | ||
911 | empty = set_isempty(s); | |
912 | ||
913 | LIST_FOREACH(vtables, c, n->vtables) { | |
914 | if (require_fallback && !c->is_fallback) | |
915 | continue; | |
916 | ||
f00c3121 LP |
917 | r = node_vtable_get_userdata(bus, m->path, c, NULL, &error); |
918 | if (r < 0) { | |
919 | r = bus_maybe_reply_error(m, r, &error); | |
920 | goto finish; | |
921 | } | |
922 | if (bus->nodes_modified) { | |
923 | r = 0; | |
924 | goto finish; | |
925 | } | |
992c052c LP |
926 | if (r == 0) |
927 | continue; | |
928 | ||
929 | empty = false; | |
930 | ||
6e8df5f0 LP |
931 | if (c->vtable[0].flags & SD_BUS_VTABLE_HIDDEN) |
932 | continue; | |
933 | ||
718db961 LP |
934 | if (!streq_ptr(previous_interface, c->interface)) { |
935 | ||
936 | if (previous_interface) | |
937 | fputs(" </interface>\n", intro.f); | |
938 | ||
939 | fprintf(intro.f, " <interface name=\"%s\">\n", c->interface); | |
940 | } | |
941 | ||
942 | r = introspect_write_interface(&intro, c->vtable); | |
992c052c LP |
943 | if (r < 0) |
944 | goto finish; | |
718db961 LP |
945 | |
946 | previous_interface = c->interface; | |
992c052c LP |
947 | } |
948 | ||
718db961 LP |
949 | if (previous_interface) |
950 | fputs(" </interface>\n", intro.f); | |
951 | ||
992c052c LP |
952 | if (empty) { |
953 | /* Nothing?, let's see if we exist at all, and if not | |
954 | * refuse to do anything */ | |
955 | r = bus_node_exists(bus, n, m->path, require_fallback); | |
956 | if (r < 0) | |
957 | return r; | |
68313d3d LP |
958 | if (bus->nodes_modified) |
959 | return 0; | |
992c052c LP |
960 | if (r == 0) |
961 | goto finish; | |
962 | } | |
963 | ||
964 | *found_object = true; | |
965 | ||
966 | r = introspect_write_child_nodes(&intro, s, m->path); | |
967 | if (r < 0) | |
968 | goto finish; | |
969 | ||
970 | r = introspect_finish(&intro, bus, m, &reply); | |
971 | if (r < 0) | |
972 | goto finish; | |
973 | ||
974 | r = sd_bus_send(bus, reply, NULL); | |
975 | if (r < 0) | |
976 | goto finish; | |
977 | ||
978 | r = 1; | |
979 | ||
980 | finish: | |
981 | introspect_free(&intro); | |
982 | return r; | |
983 | } | |
984 | ||
992c052c LP |
985 | static int object_manager_serialize_path( |
986 | sd_bus *bus, | |
987 | sd_bus_message *reply, | |
988 | const char *prefix, | |
989 | const char *path, | |
990 | bool require_fallback, | |
991 | sd_bus_error *error) { | |
992 | ||
718db961 LP |
993 | const char *previous_interface = NULL; |
994 | bool found_something = false; | |
992c052c LP |
995 | struct node_vtable *i; |
996 | struct node *n; | |
997 | int r; | |
998 | ||
999 | assert(bus); | |
1000 | assert(reply); | |
1001 | assert(prefix); | |
1002 | assert(path); | |
1003 | assert(error); | |
1004 | ||
1005 | n = hashmap_get(bus->nodes, prefix); | |
1006 | if (!n) | |
1007 | return 0; | |
1008 | ||
992c052c | 1009 | LIST_FOREACH(vtables, i, n->vtables) { |
92db139e | 1010 | void *u; |
992c052c LP |
1011 | |
1012 | if (require_fallback && !i->is_fallback) | |
1013 | continue; | |
1014 | ||
f00c3121 | 1015 | r = node_vtable_get_userdata(bus, path, i, &u, error); |
92db139e LP |
1016 | if (r < 0) |
1017 | return r; | |
68313d3d LP |
1018 | if (bus->nodes_modified) |
1019 | return 0; | |
92db139e LP |
1020 | if (r == 0) |
1021 | continue; | |
1022 | ||
1023 | if (!found_something) { | |
718db961 LP |
1024 | |
1025 | /* Open the object part */ | |
1026 | ||
92db139e LP |
1027 | r = sd_bus_message_open_container(reply, 'e', "oa{sa{sv}}"); |
1028 | if (r < 0) | |
1029 | return r; | |
1030 | ||
1031 | r = sd_bus_message_append(reply, "o", path); | |
1032 | if (r < 0) | |
1033 | return r; | |
1034 | ||
1035 | r = sd_bus_message_open_container(reply, 'a', "{sa{sv}}"); | |
1036 | if (r < 0) | |
1037 | return r; | |
1038 | ||
1039 | found_something = true; | |
1040 | } | |
1041 | ||
718db961 LP |
1042 | if (!streq_ptr(previous_interface, i->interface)) { |
1043 | ||
1044 | /* Maybe close the previous interface part */ | |
1045 | ||
1046 | if (previous_interface) { | |
1047 | r = sd_bus_message_close_container(reply); | |
1048 | if (r < 0) | |
1049 | return r; | |
1050 | ||
1051 | r = sd_bus_message_close_container(reply); | |
1052 | if (r < 0) | |
1053 | return r; | |
1054 | } | |
1055 | ||
1056 | /* Open the new interface part */ | |
1057 | ||
1058 | r = sd_bus_message_open_container(reply, 'e', "sa{sv}"); | |
1059 | if (r < 0) | |
1060 | return r; | |
1061 | ||
1062 | r = sd_bus_message_append(reply, "s", i->interface); | |
1063 | if (r < 0) | |
1064 | return r; | |
1065 | ||
1066 | r = sd_bus_message_open_container(reply, 'a', "{sv}"); | |
1067 | if (r < 0) | |
1068 | return r; | |
1069 | } | |
1070 | ||
1071 | r = vtable_append_all_properties(bus, reply, path, i, u, error); | |
992c052c LP |
1072 | if (r < 0) |
1073 | return r; | |
68313d3d LP |
1074 | if (bus->nodes_modified) |
1075 | return 0; | |
718db961 LP |
1076 | |
1077 | previous_interface = i->interface; | |
1078 | } | |
1079 | ||
1080 | if (previous_interface) { | |
1081 | r = sd_bus_message_close_container(reply); | |
1082 | if (r < 0) | |
1083 | return r; | |
1084 | ||
1085 | r = sd_bus_message_close_container(reply); | |
1086 | if (r < 0) | |
1087 | return r; | |
992c052c LP |
1088 | } |
1089 | ||
92db139e LP |
1090 | if (found_something) { |
1091 | r = sd_bus_message_close_container(reply); | |
1092 | if (r < 0) | |
1093 | return r; | |
992c052c | 1094 | |
92db139e LP |
1095 | r = sd_bus_message_close_container(reply); |
1096 | if (r < 0) | |
1097 | return r; | |
1098 | } | |
992c052c LP |
1099 | |
1100 | return 1; | |
1101 | } | |
1102 | ||
1103 | static int object_manager_serialize_path_and_fallbacks( | |
1104 | sd_bus *bus, | |
1105 | sd_bus_message *reply, | |
1106 | const char *path, | |
1107 | sd_bus_error *error) { | |
1108 | ||
92e189e5 | 1109 | char *prefix; |
992c052c LP |
1110 | int r; |
1111 | ||
1112 | assert(bus); | |
1113 | assert(reply); | |
1114 | assert(path); | |
1115 | assert(error); | |
1116 | ||
1117 | /* First, add all vtables registered for this path */ | |
1118 | r = object_manager_serialize_path(bus, reply, path, path, false, error); | |
1119 | if (r < 0) | |
1120 | return r; | |
68313d3d LP |
1121 | if (bus->nodes_modified) |
1122 | return 0; | |
992c052c LP |
1123 | |
1124 | /* Second, add fallback vtables registered for any of the prefixes */ | |
92e189e5 LP |
1125 | prefix = alloca(strlen(path) + 1); |
1126 | OBJECT_PATH_FOREACH_PREFIX(prefix, path) { | |
1127 | r = object_manager_serialize_path(bus, reply, prefix, path, true, error); | |
1128 | if (r < 0) | |
1129 | return r; | |
68313d3d LP |
1130 | if (bus->nodes_modified) |
1131 | return 0; | |
992c052c LP |
1132 | } |
1133 | ||
1134 | return 0; | |
1135 | } | |
1136 | ||
1137 | static int process_get_managed_objects( | |
1138 | sd_bus *bus, | |
1139 | sd_bus_message *m, | |
1140 | struct node *n, | |
1141 | bool require_fallback, | |
1142 | bool *found_object) { | |
1143 | ||
f00c3121 | 1144 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
992c052c LP |
1145 | _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; |
1146 | _cleanup_set_free_free_ Set *s = NULL; | |
1147 | bool empty; | |
1148 | int r; | |
1149 | ||
1150 | assert(bus); | |
1151 | assert(m); | |
1152 | assert(n); | |
1153 | assert(found_object); | |
1154 | ||
1155 | if (!bus_node_with_object_manager(bus, n)) | |
1156 | return 0; | |
1157 | ||
f00c3121 | 1158 | r = get_child_nodes(bus, m->path, n, &s, &error); |
992c052c LP |
1159 | if (r < 0) |
1160 | return r; | |
68313d3d LP |
1161 | if (bus->nodes_modified) |
1162 | return 0; | |
992c052c | 1163 | |
df2d202e | 1164 | r = sd_bus_message_new_method_return(m, &reply); |
992c052c LP |
1165 | if (r < 0) |
1166 | return r; | |
1167 | ||
1168 | r = sd_bus_message_open_container(reply, 'a', "{oa{sa{sv}}}"); | |
1169 | if (r < 0) | |
1170 | return r; | |
1171 | ||
1172 | empty = set_isempty(s); | |
1173 | if (empty) { | |
1174 | struct node_vtable *c; | |
1175 | ||
1176 | /* Hmm, so we have no children? Then let's check | |
1177 | * whether we exist at all, i.e. whether at least one | |
1178 | * vtable exists. */ | |
1179 | ||
1180 | LIST_FOREACH(vtables, c, n->vtables) { | |
1181 | ||
1182 | if (require_fallback && !c->is_fallback) | |
1183 | continue; | |
1184 | ||
1185 | if (r < 0) | |
1186 | return r; | |
1187 | if (r == 0) | |
1188 | continue; | |
1189 | ||
1190 | empty = false; | |
1191 | break; | |
1192 | } | |
1193 | ||
1194 | if (empty) | |
1195 | return 0; | |
1196 | } else { | |
1197 | Iterator i; | |
1198 | char *path; | |
1199 | ||
1200 | SET_FOREACH(path, s, i) { | |
992c052c LP |
1201 | r = object_manager_serialize_path_and_fallbacks(bus, reply, path, &error); |
1202 | if (r < 0) | |
f00c3121 | 1203 | return r; |
68313d3d LP |
1204 | |
1205 | if (bus->nodes_modified) | |
1206 | return 0; | |
992c052c LP |
1207 | } |
1208 | } | |
1209 | ||
1210 | r = sd_bus_message_close_container(reply); | |
1211 | if (r < 0) | |
1212 | return r; | |
1213 | ||
1214 | r = sd_bus_send(bus, reply, NULL); | |
1215 | if (r < 0) | |
1216 | return r; | |
1217 | ||
1218 | return 1; | |
1219 | } | |
1220 | ||
1221 | static int object_find_and_run( | |
1222 | sd_bus *bus, | |
1223 | sd_bus_message *m, | |
1224 | const char *p, | |
1225 | bool require_fallback, | |
1226 | bool *found_object) { | |
1227 | ||
1228 | struct node *n; | |
1229 | struct vtable_member vtable_key, *v; | |
1230 | int r; | |
1231 | ||
1232 | assert(bus); | |
1233 | assert(m); | |
1234 | assert(p); | |
1235 | assert(found_object); | |
1236 | ||
1237 | n = hashmap_get(bus->nodes, p); | |
1238 | if (!n) | |
1239 | return 0; | |
1240 | ||
1241 | /* First, try object callbacks */ | |
1242 | r = node_callbacks_run(bus, m, n->callbacks, require_fallback, found_object); | |
1243 | if (r != 0) | |
1244 | return r; | |
68313d3d LP |
1245 | if (bus->nodes_modified) |
1246 | return 0; | |
992c052c LP |
1247 | |
1248 | if (!m->interface || !m->member) | |
1249 | return 0; | |
1250 | ||
1251 | /* Then, look for a known method */ | |
1252 | vtable_key.path = (char*) p; | |
1253 | vtable_key.interface = m->interface; | |
1254 | vtable_key.member = m->member; | |
1255 | ||
1256 | v = hashmap_get(bus->vtable_methods, &vtable_key); | |
1257 | if (v) { | |
1258 | r = method_callbacks_run(bus, m, v, require_fallback, found_object); | |
1259 | if (r != 0) | |
1260 | return r; | |
68313d3d LP |
1261 | if (bus->nodes_modified) |
1262 | return 0; | |
992c052c LP |
1263 | } |
1264 | ||
1265 | /* Then, look for a known property */ | |
1266 | if (streq(m->interface, "org.freedesktop.DBus.Properties")) { | |
1267 | bool get = false; | |
1268 | ||
1269 | get = streq(m->member, "Get"); | |
1270 | ||
1271 | if (get || streq(m->member, "Set")) { | |
1272 | ||
1273 | r = sd_bus_message_rewind(m, true); | |
1274 | if (r < 0) | |
1275 | return r; | |
1276 | ||
1277 | vtable_key.path = (char*) p; | |
1278 | ||
1279 | r = sd_bus_message_read(m, "ss", &vtable_key.interface, &vtable_key.member); | |
1280 | if (r < 0) | |
0fc5ab90 | 1281 | return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected interface and member parameters"); |
992c052c LP |
1282 | |
1283 | v = hashmap_get(bus->vtable_properties, &vtable_key); | |
1284 | if (v) { | |
1285 | r = property_get_set_callbacks_run(bus, m, v, require_fallback, get, found_object); | |
1286 | if (r != 0) | |
1287 | return r; | |
1288 | } | |
1289 | ||
1290 | } else if (streq(m->member, "GetAll")) { | |
1291 | const char *iface; | |
1292 | ||
1293 | r = sd_bus_message_rewind(m, true); | |
1294 | if (r < 0) | |
1295 | return r; | |
1296 | ||
1297 | r = sd_bus_message_read(m, "s", &iface); | |
1298 | if (r < 0) | |
0fc5ab90 | 1299 | return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected interface parameter"); |
992c052c LP |
1300 | |
1301 | if (iface[0] == 0) | |
1302 | iface = NULL; | |
1303 | ||
1304 | r = property_get_all_callbacks_run(bus, m, n->vtables, require_fallback, iface, found_object); | |
1305 | if (r != 0) | |
1306 | return r; | |
1307 | } | |
1308 | ||
1309 | } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Introspectable", "Introspect")) { | |
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_introspect(bus, m, n, require_fallback, found_object); |
1315 | if (r != 0) | |
1316 | return r; | |
1317 | ||
1318 | } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus.ObjectManager", "GetManagedObjects")) { | |
1319 | ||
0fc5ab90 LP |
1320 | if (!isempty(sd_bus_message_get_signature(m, true))) |
1321 | return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected no parameters"); | |
1322 | ||
992c052c LP |
1323 | r = process_get_managed_objects(bus, m, n, require_fallback, found_object); |
1324 | if (r != 0) | |
1325 | return r; | |
1326 | } | |
1327 | ||
68313d3d LP |
1328 | if (bus->nodes_modified) |
1329 | return 0; | |
1330 | ||
992c052c LP |
1331 | if (!*found_object) { |
1332 | r = bus_node_exists(bus, n, m->path, require_fallback); | |
1333 | if (r < 0) | |
1334 | return r; | |
992c052c LP |
1335 | if (r > 0) |
1336 | *found_object = true; | |
1337 | } | |
1338 | ||
1339 | return 0; | |
1340 | } | |
1341 | ||
1342 | int bus_process_object(sd_bus *bus, sd_bus_message *m) { | |
1343 | int r; | |
1344 | size_t pl; | |
1345 | bool found_object = false; | |
1346 | ||
1347 | assert(bus); | |
1348 | assert(m); | |
1349 | ||
09365592 LP |
1350 | if (bus->hello_flags & KDBUS_HELLO_MONITOR) |
1351 | return 0; | |
1352 | ||
40ca29a1 | 1353 | if (m->header->type != SD_BUS_MESSAGE_METHOD_CALL) |
992c052c LP |
1354 | return 0; |
1355 | ||
992c052c LP |
1356 | if (hashmap_isempty(bus->nodes)) |
1357 | return 0; | |
1358 | ||
f820cf99 LP |
1359 | /* Never respond to broadcast messages */ |
1360 | if (bus->bus_client && !m->destination) | |
1361 | return 0; | |
1362 | ||
adacb957 LP |
1363 | assert(m->path); |
1364 | assert(m->member); | |
1365 | ||
992c052c LP |
1366 | pl = strlen(m->path); |
1367 | do { | |
92e189e5 | 1368 | char prefix[pl+1]; |
992c052c LP |
1369 | |
1370 | bus->nodes_modified = false; | |
1371 | ||
1372 | r = object_find_and_run(bus, m, m->path, false, &found_object); | |
1373 | if (r != 0) | |
1374 | return r; | |
1375 | ||
1376 | /* Look for fallback prefixes */ | |
92e189e5 | 1377 | OBJECT_PATH_FOREACH_PREFIX(prefix, m->path) { |
992c052c LP |
1378 | |
1379 | if (bus->nodes_modified) | |
1380 | break; | |
1381 | ||
92e189e5 | 1382 | r = object_find_and_run(bus, m, prefix, true, &found_object); |
992c052c LP |
1383 | if (r != 0) |
1384 | return r; | |
1385 | } | |
1386 | ||
1387 | } while (bus->nodes_modified); | |
1388 | ||
1389 | if (!found_object) | |
1390 | return 0; | |
1391 | ||
1392 | if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Properties", "Get") || | |
1393 | sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Properties", "Set")) | |
1394 | r = sd_bus_reply_method_errorf( | |
df2d202e | 1395 | m, |
40ca29a1 | 1396 | SD_BUS_ERROR_UNKNOWN_PROPERTY, |
992c052c LP |
1397 | "Unknown property or interface."); |
1398 | else | |
1399 | r = sd_bus_reply_method_errorf( | |
df2d202e | 1400 | m, |
40ca29a1 | 1401 | SD_BUS_ERROR_UNKNOWN_METHOD, |
992c052c LP |
1402 | "Unknown method '%s' or interface '%s'.", m->member, m->interface); |
1403 | ||
1404 | if (r < 0) | |
1405 | return r; | |
1406 | ||
1407 | return 1; | |
1408 | } | |
1409 | ||
1410 | static struct node *bus_node_allocate(sd_bus *bus, const char *path) { | |
1411 | struct node *n, *parent; | |
1412 | const char *e; | |
2fd069b1 ZJS |
1413 | _cleanup_free_ char *s = NULL; |
1414 | char *p; | |
992c052c LP |
1415 | int r; |
1416 | ||
1417 | assert(bus); | |
1418 | assert(path); | |
1419 | assert(path[0] == '/'); | |
1420 | ||
1421 | n = hashmap_get(bus->nodes, path); | |
1422 | if (n) | |
1423 | return n; | |
1424 | ||
1425 | r = hashmap_ensure_allocated(&bus->nodes, string_hash_func, string_compare_func); | |
1426 | if (r < 0) | |
1427 | return NULL; | |
1428 | ||
1429 | s = strdup(path); | |
1430 | if (!s) | |
1431 | return NULL; | |
1432 | ||
1433 | if (streq(path, "/")) | |
1434 | parent = NULL; | |
1435 | else { | |
1436 | e = strrchr(path, '/'); | |
1437 | assert(e); | |
1438 | ||
1439 | p = strndupa(path, MAX(1, path - e)); | |
1440 | ||
1441 | parent = bus_node_allocate(bus, p); | |
2fd069b1 | 1442 | if (!parent) |
992c052c | 1443 | return NULL; |
992c052c LP |
1444 | } |
1445 | ||
1446 | n = new0(struct node, 1); | |
1447 | if (!n) | |
1448 | return NULL; | |
1449 | ||
1450 | n->parent = parent; | |
1451 | n->path = s; | |
2fd069b1 | 1452 | s = NULL; /* do not free */ |
992c052c | 1453 | |
8e050193 | 1454 | r = hashmap_put(bus->nodes, n->path, n); |
992c052c | 1455 | if (r < 0) { |
2fd069b1 | 1456 | free(n->path); |
992c052c LP |
1457 | free(n); |
1458 | return NULL; | |
1459 | } | |
1460 | ||
1461 | if (parent) | |
71fda00f | 1462 | LIST_PREPEND(siblings, parent->child, n); |
992c052c LP |
1463 | |
1464 | return n; | |
1465 | } | |
1466 | ||
19befb2d | 1467 | void bus_node_gc(sd_bus *b, struct node *n) { |
992c052c LP |
1468 | assert(b); |
1469 | ||
1470 | if (!n) | |
1471 | return; | |
1472 | ||
1473 | if (n->child || | |
1474 | n->callbacks || | |
1475 | n->vtables || | |
1476 | n->enumerators || | |
19befb2d | 1477 | n->object_managers) |
992c052c LP |
1478 | return; |
1479 | ||
1480 | assert(hashmap_remove(b->nodes, n->path) == n); | |
1481 | ||
1482 | if (n->parent) | |
71fda00f | 1483 | LIST_REMOVE(siblings, n->parent->child, n); |
992c052c LP |
1484 | |
1485 | free(n->path); | |
1486 | bus_node_gc(b, n->parent); | |
1487 | free(n); | |
1488 | } | |
1489 | ||
1490 | static int bus_add_object( | |
dfa92725 | 1491 | sd_bus *bus, |
19befb2d | 1492 | sd_bus_slot **slot, |
992c052c LP |
1493 | bool fallback, |
1494 | const char *path, | |
1495 | sd_bus_message_handler_t callback, | |
1496 | void *userdata) { | |
1497 | ||
19befb2d | 1498 | sd_bus_slot *s; |
992c052c LP |
1499 | struct node *n; |
1500 | int r; | |
1501 | ||
dfa92725 LP |
1502 | assert_return(bus, -EINVAL); |
1503 | assert_return(object_path_is_valid(path), -EINVAL); | |
1504 | assert_return(callback, -EINVAL); | |
1505 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
992c052c | 1506 | |
dfa92725 | 1507 | n = bus_node_allocate(bus, path); |
992c052c LP |
1508 | if (!n) |
1509 | return -ENOMEM; | |
1510 | ||
19befb2d LP |
1511 | s = bus_slot_allocate(bus, !slot, BUS_NODE_CALLBACK, sizeof(struct node_callback), userdata); |
1512 | if (!s) { | |
992c052c LP |
1513 | r = -ENOMEM; |
1514 | goto fail; | |
1515 | } | |
1516 | ||
19befb2d LP |
1517 | s->node_callback.callback = callback; |
1518 | s->node_callback.is_fallback = fallback; | |
992c052c | 1519 | |
19befb2d LP |
1520 | s->node_callback.node = n; |
1521 | LIST_PREPEND(callbacks, n->callbacks, &s->node_callback); | |
68313d3d LP |
1522 | bus->nodes_modified = true; |
1523 | ||
19befb2d LP |
1524 | if (slot) |
1525 | *slot = s; | |
1526 | ||
992c052c LP |
1527 | return 0; |
1528 | ||
1529 | fail: | |
19befb2d | 1530 | sd_bus_slot_unref(s); |
dfa92725 | 1531 | bus_node_gc(bus, n); |
19befb2d | 1532 | |
992c052c LP |
1533 | return r; |
1534 | } | |
1535 | ||
19befb2d | 1536 | _public_ int sd_bus_add_object( |
992c052c | 1537 | sd_bus *bus, |
19befb2d | 1538 | sd_bus_slot **slot, |
992c052c LP |
1539 | const char *path, |
1540 | sd_bus_message_handler_t callback, | |
1541 | void *userdata) { | |
1542 | ||
19befb2d | 1543 | return bus_add_object(bus, slot, false, path, callback, userdata); |
992c052c LP |
1544 | } |
1545 | ||
19befb2d LP |
1546 | _public_ int sd_bus_add_fallback( |
1547 | sd_bus *bus, | |
1548 | sd_bus_slot **slot, | |
1549 | const char *prefix, | |
1550 | sd_bus_message_handler_t callback, | |
1551 | void *userdata) { | |
992c052c | 1552 | |
19befb2d | 1553 | return bus_add_object(bus, slot, true, prefix, callback, userdata); |
992c052c LP |
1554 | } |
1555 | ||
9bf3b535 | 1556 | static unsigned long vtable_member_hash_func(const void *a, const uint8_t hash_key[HASH_KEY_SIZE]) { |
992c052c | 1557 | const struct vtable_member *m = a; |
9bf3b535 LP |
1558 | uint8_t hash_key2[HASH_KEY_SIZE]; |
1559 | unsigned long ret; | |
992c052c | 1560 | |
dfa92725 LP |
1561 | assert(m); |
1562 | ||
9bf3b535 LP |
1563 | ret = string_hash_func(m->path, hash_key); |
1564 | ||
1565 | /* Use a slightly different hash key for the interface */ | |
1566 | memcpy(hash_key2, hash_key, HASH_KEY_SIZE); | |
1567 | hash_key2[0]++; | |
1568 | ret ^= string_hash_func(m->interface, hash_key2); | |
1569 | ||
1570 | /* And an even different one for the member */ | |
1571 | hash_key2[0]++; | |
1572 | ret ^= string_hash_func(m->member, hash_key2); | |
1573 | ||
1574 | return ret; | |
992c052c LP |
1575 | } |
1576 | ||
1577 | static int vtable_member_compare_func(const void *a, const void *b) { | |
1578 | const struct vtable_member *x = a, *y = b; | |
1579 | int r; | |
1580 | ||
dfa92725 LP |
1581 | assert(x); |
1582 | assert(y); | |
1583 | ||
992c052c LP |
1584 | r = strcmp(x->path, y->path); |
1585 | if (r != 0) | |
1586 | return r; | |
1587 | ||
1588 | r = strcmp(x->interface, y->interface); | |
1589 | if (r != 0) | |
1590 | return r; | |
1591 | ||
1592 | return strcmp(x->member, y->member); | |
1593 | } | |
1594 | ||
1595 | static int add_object_vtable_internal( | |
1596 | sd_bus *bus, | |
19befb2d | 1597 | sd_bus_slot **slot, |
992c052c LP |
1598 | const char *path, |
1599 | const char *interface, | |
1600 | const sd_bus_vtable *vtable, | |
1601 | bool fallback, | |
1602 | sd_bus_object_find_t find, | |
1603 | void *userdata) { | |
1604 | ||
2915234d | 1605 | sd_bus_slot *s = NULL; |
19befb2d | 1606 | struct node_vtable *i, *existing = NULL; |
992c052c LP |
1607 | const sd_bus_vtable *v; |
1608 | struct node *n; | |
1609 | int r; | |
1610 | ||
dfa92725 LP |
1611 | assert_return(bus, -EINVAL); |
1612 | assert_return(object_path_is_valid(path), -EINVAL); | |
1613 | assert_return(interface_name_is_valid(interface), -EINVAL); | |
1614 | assert_return(vtable, -EINVAL); | |
1615 | assert_return(vtable[0].type == _SD_BUS_VTABLE_START, -EINVAL); | |
1616 | assert_return(vtable[0].x.start.element_size == sizeof(struct sd_bus_vtable), -EINVAL); | |
1617 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
718db961 LP |
1618 | assert_return(!streq(interface, "org.freedesktop.DBus.Properties") && |
1619 | !streq(interface, "org.freedesktop.DBus.Introspectable") && | |
1620 | !streq(interface, "org.freedesktop.DBus.Peer") && | |
1621 | !streq(interface, "org.freedesktop.DBus.ObjectManager"), -EINVAL); | |
992c052c LP |
1622 | |
1623 | r = hashmap_ensure_allocated(&bus->vtable_methods, vtable_member_hash_func, vtable_member_compare_func); | |
1624 | if (r < 0) | |
1625 | return r; | |
1626 | ||
1627 | r = hashmap_ensure_allocated(&bus->vtable_properties, vtable_member_hash_func, vtable_member_compare_func); | |
1628 | if (r < 0) | |
1629 | return r; | |
1630 | ||
1631 | n = bus_node_allocate(bus, path); | |
1632 | if (!n) | |
1633 | return -ENOMEM; | |
1634 | ||
1635 | LIST_FOREACH(vtables, i, n->vtables) { | |
992c052c LP |
1636 | if (i->is_fallback != fallback) { |
1637 | r = -EPROTOTYPE; | |
1638 | goto fail; | |
1639 | } | |
718db961 LP |
1640 | |
1641 | if (streq(i->interface, interface)) { | |
1642 | ||
1643 | if (i->vtable == vtable) { | |
1644 | r = -EEXIST; | |
1645 | goto fail; | |
1646 | } | |
1647 | ||
1648 | existing = i; | |
1649 | } | |
992c052c LP |
1650 | } |
1651 | ||
19befb2d LP |
1652 | s = bus_slot_allocate(bus, !slot, BUS_NODE_VTABLE, sizeof(struct node_vtable), userdata); |
1653 | if (!s) { | |
992c052c LP |
1654 | r = -ENOMEM; |
1655 | goto fail; | |
1656 | } | |
1657 | ||
19befb2d LP |
1658 | s->node_vtable.is_fallback = fallback; |
1659 | s->node_vtable.vtable = vtable; | |
1660 | s->node_vtable.find = find; | |
992c052c | 1661 | |
19befb2d LP |
1662 | s->node_vtable.interface = strdup(interface); |
1663 | if (!s->node_vtable.interface) { | |
992c052c LP |
1664 | r = -ENOMEM; |
1665 | goto fail; | |
1666 | } | |
1667 | ||
19befb2d | 1668 | for (v = s->node_vtable.vtable+1; v->type != _SD_BUS_VTABLE_END; v++) { |
992c052c LP |
1669 | |
1670 | switch (v->type) { | |
1671 | ||
1672 | case _SD_BUS_VTABLE_METHOD: { | |
1673 | struct vtable_member *m; | |
1674 | ||
77a874a3 LP |
1675 | if (!member_name_is_valid(v->x.method.member) || |
1676 | !signature_is_valid(strempty(v->x.method.signature), false) || | |
1677 | !signature_is_valid(strempty(v->x.method.result), false) || | |
1678 | !(v->x.method.handler || (isempty(v->x.method.signature) && isempty(v->x.method.result))) || | |
df98a87b | 1679 | v->flags & (SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE|SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION)) { |
992c052c LP |
1680 | r = -EINVAL; |
1681 | goto fail; | |
1682 | } | |
1683 | ||
1684 | m = new0(struct vtable_member, 1); | |
1685 | if (!m) { | |
1686 | r = -ENOMEM; | |
1687 | goto fail; | |
1688 | } | |
1689 | ||
19befb2d | 1690 | m->parent = &s->node_vtable; |
992c052c | 1691 | m->path = n->path; |
19befb2d | 1692 | m->interface = s->node_vtable.interface; |
77a874a3 | 1693 | m->member = v->x.method.member; |
992c052c LP |
1694 | m->vtable = v; |
1695 | ||
1696 | r = hashmap_put(bus->vtable_methods, m, m); | |
1697 | if (r < 0) { | |
1698 | free(m); | |
1699 | goto fail; | |
1700 | } | |
1701 | ||
1702 | break; | |
1703 | } | |
1704 | ||
1705 | case _SD_BUS_VTABLE_WRITABLE_PROPERTY: | |
1706 | ||
77a874a3 | 1707 | if (!(v->x.property.set || bus_type_is_basic(v->x.property.signature[0]))) { |
992c052c LP |
1708 | r = -EINVAL; |
1709 | goto fail; | |
1710 | } | |
1711 | ||
1712 | /* Fall through */ | |
1713 | ||
1714 | case _SD_BUS_VTABLE_PROPERTY: { | |
1715 | struct vtable_member *m; | |
1716 | ||
77a874a3 LP |
1717 | if (!member_name_is_valid(v->x.property.member) || |
1718 | !signature_is_single(v->x.property.signature, false) || | |
c13c7de3 | 1719 | !(v->x.property.get || bus_type_is_basic(v->x.property.signature[0]) || streq(v->x.property.signature, "as")) || |
992c052c | 1720 | v->flags & SD_BUS_VTABLE_METHOD_NO_REPLY || |
df98a87b | 1721 | (!!(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 | 1722 | (v->flags & SD_BUS_VTABLE_UNPRIVILEGED && v->type == _SD_BUS_VTABLE_PROPERTY)) { |
992c052c LP |
1723 | r = -EINVAL; |
1724 | goto fail; | |
1725 | } | |
1726 | ||
992c052c LP |
1727 | m = new0(struct vtable_member, 1); |
1728 | if (!m) { | |
1729 | r = -ENOMEM; | |
1730 | goto fail; | |
1731 | } | |
1732 | ||
19befb2d | 1733 | m->parent = &s->node_vtable; |
992c052c | 1734 | m->path = n->path; |
19befb2d | 1735 | m->interface = s->node_vtable.interface; |
77a874a3 | 1736 | m->member = v->x.property.member; |
992c052c LP |
1737 | m->vtable = v; |
1738 | ||
1739 | r = hashmap_put(bus->vtable_properties, m, m); | |
1740 | if (r < 0) { | |
1741 | free(m); | |
1742 | goto fail; | |
1743 | } | |
1744 | ||
1745 | break; | |
1746 | } | |
1747 | ||
1748 | case _SD_BUS_VTABLE_SIGNAL: | |
1749 | ||
77a874a3 | 1750 | if (!member_name_is_valid(v->x.signal.member) || |
adacb957 LP |
1751 | !signature_is_valid(strempty(v->x.signal.signature), false) || |
1752 | v->flags & SD_BUS_VTABLE_UNPRIVILEGED) { | |
992c052c LP |
1753 | r = -EINVAL; |
1754 | goto fail; | |
1755 | } | |
1756 | ||
1757 | break; | |
1758 | ||
1759 | default: | |
1760 | r = -EINVAL; | |
1761 | goto fail; | |
1762 | } | |
1763 | } | |
1764 | ||
19befb2d LP |
1765 | s->node_vtable.node = n; |
1766 | LIST_INSERT_AFTER(vtables, n->vtables, existing, &s->node_vtable); | |
68313d3d LP |
1767 | bus->nodes_modified = true; |
1768 | ||
19befb2d LP |
1769 | if (slot) |
1770 | *slot = s; | |
1771 | ||
992c052c LP |
1772 | return 0; |
1773 | ||
1774 | fail: | |
19befb2d | 1775 | sd_bus_slot_unref(s); |
dfa92725 LP |
1776 | bus_node_gc(bus, n); |
1777 | ||
19befb2d | 1778 | return r; |
992c052c LP |
1779 | } |
1780 | ||
d9f644e2 | 1781 | _public_ int sd_bus_add_object_vtable( |
992c052c | 1782 | sd_bus *bus, |
19befb2d | 1783 | sd_bus_slot **slot, |
992c052c LP |
1784 | const char *path, |
1785 | const char *interface, | |
1786 | const sd_bus_vtable *vtable, | |
1787 | void *userdata) { | |
1788 | ||
19befb2d | 1789 | return add_object_vtable_internal(bus, slot, path, interface, vtable, false, NULL, userdata); |
992c052c LP |
1790 | } |
1791 | ||
d9f644e2 | 1792 | _public_ int sd_bus_add_fallback_vtable( |
992c052c | 1793 | sd_bus *bus, |
19befb2d LP |
1794 | sd_bus_slot **slot, |
1795 | const char *prefix, | |
718db961 LP |
1796 | const char *interface, |
1797 | const sd_bus_vtable *vtable, | |
1798 | sd_bus_object_find_t find, | |
1799 | void *userdata) { | |
992c052c | 1800 | |
19befb2d | 1801 | return add_object_vtable_internal(bus, slot, prefix, interface, vtable, true, find, userdata); |
992c052c LP |
1802 | } |
1803 | ||
d9f644e2 | 1804 | _public_ int sd_bus_add_node_enumerator( |
992c052c | 1805 | sd_bus *bus, |
19befb2d | 1806 | sd_bus_slot **slot, |
992c052c LP |
1807 | const char *path, |
1808 | sd_bus_node_enumerator_t callback, | |
1809 | void *userdata) { | |
1810 | ||
19befb2d | 1811 | sd_bus_slot *s; |
992c052c LP |
1812 | struct node *n; |
1813 | int r; | |
1814 | ||
dfa92725 LP |
1815 | assert_return(bus, -EINVAL); |
1816 | assert_return(object_path_is_valid(path), -EINVAL); | |
1817 | assert_return(callback, -EINVAL); | |
1818 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
992c052c LP |
1819 | |
1820 | n = bus_node_allocate(bus, path); | |
1821 | if (!n) | |
1822 | return -ENOMEM; | |
1823 | ||
19befb2d LP |
1824 | s = bus_slot_allocate(bus, !slot, BUS_NODE_ENUMERATOR, sizeof(struct node_enumerator), userdata); |
1825 | if (!s) { | |
992c052c LP |
1826 | r = -ENOMEM; |
1827 | goto fail; | |
1828 | } | |
1829 | ||
19befb2d | 1830 | s->node_enumerator.callback = callback; |
68313d3d | 1831 | |
19befb2d LP |
1832 | s->node_enumerator.node = n; |
1833 | LIST_PREPEND(enumerators, n->enumerators, &s->node_enumerator); | |
68313d3d LP |
1834 | bus->nodes_modified = true; |
1835 | ||
19befb2d LP |
1836 | if (slot) |
1837 | *slot = s; | |
1838 | ||
992c052c LP |
1839 | return 0; |
1840 | ||
1841 | fail: | |
19befb2d | 1842 | sd_bus_slot_unref(s); |
992c052c LP |
1843 | bus_node_gc(bus, n); |
1844 | ||
19befb2d | 1845 | return r; |
992c052c LP |
1846 | } |
1847 | ||
1848 | static int emit_properties_changed_on_interface( | |
1849 | sd_bus *bus, | |
1850 | const char *prefix, | |
1851 | const char *path, | |
1852 | const char *interface, | |
1853 | bool require_fallback, | |
46525bfc | 1854 | bool *found_interface, |
992c052c LP |
1855 | char **names) { |
1856 | ||
f00c3121 | 1857 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
992c052c | 1858 | _cleanup_bus_message_unref_ sd_bus_message *m = NULL; |
718db961 LP |
1859 | bool has_invalidating = false, has_changing = false; |
1860 | struct vtable_member key = {}; | |
992c052c LP |
1861 | struct node_vtable *c; |
1862 | struct node *n; | |
1863 | char **property; | |
1864 | void *u = NULL; | |
1865 | int r; | |
1866 | ||
1867 | assert(bus); | |
dfa92725 | 1868 | assert(prefix); |
992c052c LP |
1869 | assert(path); |
1870 | assert(interface); | |
46525bfc | 1871 | assert(found_interface); |
992c052c LP |
1872 | |
1873 | n = hashmap_get(bus->nodes, prefix); | |
1874 | if (!n) | |
1875 | return 0; | |
1876 | ||
151b9b96 | 1877 | r = sd_bus_message_new_signal(bus, &m, path, "org.freedesktop.DBus.Properties", "PropertiesChanged"); |
992c052c LP |
1878 | if (r < 0) |
1879 | return r; | |
1880 | ||
1881 | r = sd_bus_message_append(m, "s", interface); | |
1882 | if (r < 0) | |
1883 | return r; | |
1884 | ||
1885 | r = sd_bus_message_open_container(m, 'a', "{sv}"); | |
1886 | if (r < 0) | |
1887 | return r; | |
1888 | ||
1889 | key.path = prefix; | |
1890 | key.interface = interface; | |
1891 | ||
718db961 LP |
1892 | LIST_FOREACH(vtables, c, n->vtables) { |
1893 | if (require_fallback && !c->is_fallback) | |
1894 | continue; | |
992c052c | 1895 | |
718db961 | 1896 | if (!streq(c->interface, interface)) |
992c052c | 1897 | continue; |
992c052c | 1898 | |
f00c3121 | 1899 | r = node_vtable_get_userdata(bus, path, c, &u, &error); |
992c052c LP |
1900 | if (r < 0) |
1901 | return r; | |
718db961 LP |
1902 | if (bus->nodes_modified) |
1903 | return 0; | |
1904 | if (r == 0) | |
1905 | continue; | |
992c052c | 1906 | |
46525bfc LP |
1907 | *found_interface = true; |
1908 | ||
a03e4337 LP |
1909 | if (names) { |
1910 | /* If the caller specified a list of | |
1911 | * properties we include exactly those in the | |
1912 | * PropertiesChanged message */ | |
992c052c | 1913 | |
a03e4337 LP |
1914 | STRV_FOREACH(property, names) { |
1915 | struct vtable_member *v; | |
992c052c | 1916 | |
a03e4337 | 1917 | assert_return(member_name_is_valid(*property), -EINVAL); |
718db961 | 1918 | |
a03e4337 LP |
1919 | key.member = *property; |
1920 | v = hashmap_get(bus->vtable_properties, &key); | |
1921 | if (!v) | |
1922 | return -ENOENT; | |
1923 | ||
1924 | /* If there are two vtables for the same | |
1925 | * interface, let's handle this property when | |
1926 | * we come to that vtable. */ | |
1927 | if (c != v->parent) | |
1928 | continue; | |
992c052c | 1929 | |
a03e4337 LP |
1930 | assert_return(v->vtable->flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE || |
1931 | v->vtable->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION, -EDOM); | |
992c052c | 1932 | |
a03e4337 LP |
1933 | assert_return(!(v->vtable->flags & SD_BUS_VTABLE_HIDDEN), -EDOM); |
1934 | ||
1935 | if (v->vtable->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION) { | |
1936 | has_invalidating = true; | |
1937 | continue; | |
1938 | } | |
1939 | ||
1940 | has_changing = true; | |
1941 | ||
1942 | r = vtable_append_one_property(bus, m, m->path, c, v->vtable, u, &error); | |
1943 | if (r < 0) | |
1944 | return r; | |
1945 | if (bus->nodes_modified) | |
1946 | return 0; | |
718db961 | 1947 | } |
a03e4337 LP |
1948 | } else { |
1949 | const sd_bus_vtable *v; | |
718db961 | 1950 | |
a03e4337 LP |
1951 | /* If the caller specified no properties list |
1952 | * we include all properties that are marked | |
1953 | * as changing in the message. */ | |
718db961 | 1954 | |
a03e4337 LP |
1955 | for (v = c->vtable+1; v->type != _SD_BUS_VTABLE_END; v++) { |
1956 | if (v->type != _SD_BUS_VTABLE_PROPERTY && v->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY) | |
1957 | continue; | |
718db961 | 1958 | |
a03e4337 LP |
1959 | if (v->flags & SD_BUS_VTABLE_HIDDEN) |
1960 | continue; | |
718db961 | 1961 | |
a03e4337 LP |
1962 | if (v->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION) { |
1963 | has_invalidating = true; | |
1964 | continue; | |
1965 | } | |
718db961 | 1966 | |
a03e4337 LP |
1967 | if (!(v->flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE)) |
1968 | continue; | |
718db961 | 1969 | |
a03e4337 | 1970 | has_changing = true; |
718db961 | 1971 | |
a03e4337 LP |
1972 | r = vtable_append_one_property(bus, m, m->path, c, v, u, &error); |
1973 | if (r < 0) | |
1974 | return r; | |
1975 | if (bus->nodes_modified) | |
1976 | return 0; | |
1977 | } | |
718db961 | 1978 | } |
992c052c LP |
1979 | } |
1980 | ||
718db961 LP |
1981 | if (!has_invalidating && !has_changing) |
1982 | return 0; | |
1983 | ||
992c052c LP |
1984 | r = sd_bus_message_close_container(m); |
1985 | if (r < 0) | |
1986 | return r; | |
1987 | ||
1988 | r = sd_bus_message_open_container(m, 'a', "s"); | |
1989 | if (r < 0) | |
1990 | return r; | |
1991 | ||
1992 | if (has_invalidating) { | |
718db961 LP |
1993 | LIST_FOREACH(vtables, c, n->vtables) { |
1994 | if (require_fallback && !c->is_fallback) | |
1995 | continue; | |
992c052c | 1996 | |
718db961 | 1997 | if (!streq(c->interface, interface)) |
992c052c LP |
1998 | continue; |
1999 | ||
f00c3121 | 2000 | r = node_vtable_get_userdata(bus, path, c, &u, &error); |
992c052c LP |
2001 | if (r < 0) |
2002 | return r; | |
718db961 LP |
2003 | if (bus->nodes_modified) |
2004 | return 0; | |
2005 | if (r == 0) | |
2006 | continue; | |
2007 | ||
a03e4337 LP |
2008 | if (names) { |
2009 | STRV_FOREACH(property, names) { | |
2010 | struct vtable_member *v; | |
718db961 | 2011 | |
a03e4337 LP |
2012 | key.member = *property; |
2013 | assert_se(v = hashmap_get(bus->vtable_properties, &key)); | |
2014 | assert(c == v->parent); | |
718db961 | 2015 | |
a03e4337 LP |
2016 | if (!(v->vtable->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION)) |
2017 | continue; | |
718db961 | 2018 | |
a03e4337 LP |
2019 | r = sd_bus_message_append(m, "s", *property); |
2020 | if (r < 0) | |
2021 | return r; | |
2022 | } | |
2023 | } else { | |
2024 | const sd_bus_vtable *v; | |
2025 | ||
2026 | for (v = c->vtable+1; v->type != _SD_BUS_VTABLE_END; v++) { | |
2027 | if (v->type != _SD_BUS_VTABLE_PROPERTY && v->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY) | |
2028 | continue; | |
2029 | ||
2030 | if (v->flags & SD_BUS_VTABLE_HIDDEN) | |
2031 | continue; | |
2032 | ||
2033 | if (!(v->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION)) | |
2034 | continue; | |
2035 | ||
2036 | r = sd_bus_message_append(m, "s", v->x.property.member); | |
2037 | if (r < 0) | |
2038 | return r; | |
2039 | } | |
718db961 | 2040 | } |
992c052c LP |
2041 | } |
2042 | } | |
2043 | ||
2044 | r = sd_bus_message_close_container(m); | |
2045 | if (r < 0) | |
2046 | return r; | |
2047 | ||
2048 | r = sd_bus_send(bus, m, NULL); | |
2049 | if (r < 0) | |
2050 | return r; | |
2051 | ||
2052 | return 1; | |
2053 | } | |
2054 | ||
d9f644e2 | 2055 | _public_ int sd_bus_emit_properties_changed_strv( |
dfa92725 LP |
2056 | sd_bus *bus, |
2057 | const char *path, | |
2058 | const char *interface, | |
2059 | char **names) { | |
2060 | ||
8ce2afd6 | 2061 | BUS_DONT_DESTROY(bus); |
46525bfc | 2062 | bool found_interface = false; |
92e189e5 | 2063 | char *prefix; |
992c052c LP |
2064 | int r; |
2065 | ||
dfa92725 LP |
2066 | assert_return(bus, -EINVAL); |
2067 | assert_return(object_path_is_valid(path), -EINVAL); | |
2068 | assert_return(interface_name_is_valid(interface), -EINVAL); | |
dfa92725 LP |
2069 | assert_return(!bus_pid_changed(bus), -ECHILD); |
2070 | ||
a3d59cd1 LP |
2071 | if (!BUS_IS_OPEN(bus->state)) |
2072 | return -ENOTCONN; | |
a03e4337 LP |
2073 | |
2074 | /* A non-NULL but empty names list means nothing needs to be | |
2075 | generated. A NULL list OTOH indicates that all properties | |
2076 | that are set to EMITS_CHANGE or EMITS_INVALIDATION shall be | |
2077 | included in the PropertiesChanged message. */ | |
2078 | if (names && names[0] == NULL) | |
dfa92725 | 2079 | return 0; |
992c052c | 2080 | |
68313d3d LP |
2081 | do { |
2082 | bus->nodes_modified = false; | |
992c052c | 2083 | |
46525bfc | 2084 | r = emit_properties_changed_on_interface(bus, path, path, interface, false, &found_interface, names); |
92e189e5 LP |
2085 | if (r != 0) |
2086 | return r; | |
68313d3d LP |
2087 | if (bus->nodes_modified) |
2088 | continue; | |
2089 | ||
2090 | prefix = alloca(strlen(path) + 1); | |
2091 | OBJECT_PATH_FOREACH_PREFIX(prefix, path) { | |
46525bfc | 2092 | r = emit_properties_changed_on_interface(bus, prefix, path, interface, true, &found_interface, names); |
68313d3d LP |
2093 | if (r != 0) |
2094 | return r; | |
2095 | if (bus->nodes_modified) | |
2096 | break; | |
2097 | } | |
2098 | ||
2099 | } while (bus->nodes_modified); | |
992c052c | 2100 | |
46525bfc | 2101 | return found_interface ? 0 : -ENOENT; |
992c052c LP |
2102 | } |
2103 | ||
d9f644e2 | 2104 | _public_ int sd_bus_emit_properties_changed( |
dfa92725 LP |
2105 | sd_bus *bus, |
2106 | const char *path, | |
2107 | const char *interface, | |
2108 | const char *name, ...) { | |
2109 | ||
250a918d | 2110 | char **names; |
992c052c | 2111 | |
dfa92725 LP |
2112 | assert_return(bus, -EINVAL); |
2113 | assert_return(object_path_is_valid(path), -EINVAL); | |
2114 | assert_return(interface_name_is_valid(interface), -EINVAL); | |
dfa92725 LP |
2115 | assert_return(!bus_pid_changed(bus), -ECHILD); |
2116 | ||
a3d59cd1 LP |
2117 | if (!BUS_IS_OPEN(bus->state)) |
2118 | return -ENOTCONN; | |
2119 | ||
dfa92725 LP |
2120 | if (!name) |
2121 | return 0; | |
2122 | ||
250a918d | 2123 | names = strv_from_stdarg_alloca(name); |
992c052c LP |
2124 | |
2125 | return sd_bus_emit_properties_changed_strv(bus, path, interface, names); | |
2126 | } | |
2127 | ||
4be39163 LP |
2128 | static int interfaces_added_append_one_prefix( |
2129 | sd_bus *bus, | |
2130 | sd_bus_message *m, | |
2131 | const char *prefix, | |
2132 | const char *path, | |
2133 | const char *interface, | |
2134 | bool require_fallback) { | |
2135 | ||
2136 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; | |
718db961 | 2137 | bool found_interface = false; |
4be39163 LP |
2138 | struct node_vtable *c; |
2139 | struct node *n; | |
2140 | void *u = NULL; | |
2141 | int r; | |
2142 | ||
2143 | assert(bus); | |
2144 | assert(m); | |
2145 | assert(prefix); | |
2146 | assert(path); | |
2147 | assert(interface); | |
2148 | ||
2149 | n = hashmap_get(bus->nodes, prefix); | |
2150 | if (!n) | |
2151 | return 0; | |
2152 | ||
2153 | LIST_FOREACH(vtables, c, n->vtables) { | |
2154 | if (require_fallback && !c->is_fallback) | |
2155 | continue; | |
2156 | ||
718db961 LP |
2157 | if (!streq(c->interface, interface)) |
2158 | continue; | |
4be39163 | 2159 | |
f00c3121 | 2160 | r = node_vtable_get_userdata(bus, path, c, &u, &error); |
718db961 LP |
2161 | if (r < 0) |
2162 | return r; | |
2163 | if (bus->nodes_modified) | |
2164 | return 0; | |
2165 | if (r == 0) | |
2166 | continue; | |
4be39163 | 2167 | |
718db961 LP |
2168 | if (!found_interface) { |
2169 | r = sd_bus_message_append_basic(m, 's', interface); | |
2170 | if (r < 0) | |
2171 | return r; | |
4be39163 | 2172 | |
718db961 LP |
2173 | r = sd_bus_message_open_container(m, 'a', "{sv}"); |
2174 | if (r < 0) | |
2175 | return r; | |
4be39163 | 2176 | |
718db961 LP |
2177 | found_interface = true; |
2178 | } | |
4be39163 | 2179 | |
718db961 LP |
2180 | r = vtable_append_all_properties(bus, m, path, c, u, &error); |
2181 | if (r < 0) | |
2182 | return r; | |
2183 | if (bus->nodes_modified) | |
2184 | return 0; | |
2185 | } | |
4be39163 | 2186 | |
718db961 LP |
2187 | if (found_interface) { |
2188 | r = sd_bus_message_close_container(m); | |
2189 | if (r < 0) | |
2190 | return r; | |
2191 | } | |
4be39163 | 2192 | |
718db961 | 2193 | return found_interface; |
4be39163 LP |
2194 | } |
2195 | ||
2196 | static int interfaces_added_append_one( | |
2197 | sd_bus *bus, | |
2198 | sd_bus_message *m, | |
2199 | const char *path, | |
2200 | const char *interface) { | |
2201 | ||
2202 | char *prefix; | |
2203 | int r; | |
2204 | ||
2205 | assert(bus); | |
2206 | assert(m); | |
2207 | assert(path); | |
2208 | assert(interface); | |
2209 | ||
2210 | r = interfaces_added_append_one_prefix(bus, m, path, path, interface, false); | |
2211 | if (r != 0) | |
2212 | return r; | |
68313d3d LP |
2213 | if (bus->nodes_modified) |
2214 | return 0; | |
4be39163 LP |
2215 | |
2216 | prefix = alloca(strlen(path) + 1); | |
2217 | OBJECT_PATH_FOREACH_PREFIX(prefix, path) { | |
2218 | r = interfaces_added_append_one_prefix(bus, m, prefix, path, interface, true); | |
2219 | if (r != 0) | |
2220 | return r; | |
68313d3d LP |
2221 | if (bus->nodes_modified) |
2222 | return 0; | |
4be39163 LP |
2223 | } |
2224 | ||
2225 | return -ENOENT; | |
992c052c LP |
2226 | } |
2227 | ||
d9f644e2 | 2228 | _public_ int sd_bus_emit_interfaces_added_strv(sd_bus *bus, const char *path, char **interfaces) { |
8ce2afd6 LP |
2229 | BUS_DONT_DESTROY(bus); |
2230 | ||
4be39163 LP |
2231 | _cleanup_bus_message_unref_ sd_bus_message *m = NULL; |
2232 | char **i; | |
2233 | int r; | |
2234 | ||
2235 | assert_return(bus, -EINVAL); | |
2236 | assert_return(object_path_is_valid(path), -EINVAL); | |
4be39163 LP |
2237 | assert_return(!bus_pid_changed(bus), -ECHILD); |
2238 | ||
a3d59cd1 LP |
2239 | if (!BUS_IS_OPEN(bus->state)) |
2240 | return -ENOTCONN; | |
2241 | ||
4be39163 LP |
2242 | if (strv_isempty(interfaces)) |
2243 | return 0; | |
2244 | ||
68313d3d LP |
2245 | do { |
2246 | bus->nodes_modified = false; | |
1b02f301 | 2247 | m = sd_bus_message_unref(m); |
4be39163 | 2248 | |
151b9b96 | 2249 | r = sd_bus_message_new_signal(bus, &m, path, "org.freedesktop.DBus.ObjectManager", "InterfacesAdded"); |
68313d3d LP |
2250 | if (r < 0) |
2251 | return r; | |
4be39163 | 2252 | |
68313d3d | 2253 | r = sd_bus_message_append_basic(m, 'o', path); |
4be39163 LP |
2254 | if (r < 0) |
2255 | return r; | |
2256 | ||
68313d3d | 2257 | r = sd_bus_message_open_container(m, 'a', "{sa{sv}}"); |
4be39163 LP |
2258 | if (r < 0) |
2259 | return r; | |
2260 | ||
68313d3d LP |
2261 | STRV_FOREACH(i, interfaces) { |
2262 | assert_return(interface_name_is_valid(*i), -EINVAL); | |
2263 | ||
2264 | r = sd_bus_message_open_container(m, 'e', "sa{sv}"); | |
2265 | if (r < 0) | |
2266 | return r; | |
2267 | ||
2268 | r = interfaces_added_append_one(bus, m, path, *i); | |
2269 | if (r < 0) | |
2270 | return r; | |
2271 | ||
2272 | if (bus->nodes_modified) | |
2273 | break; | |
2274 | ||
2275 | r = sd_bus_message_close_container(m); | |
2276 | if (r < 0) | |
2277 | return r; | |
2278 | } | |
2279 | ||
2280 | if (bus->nodes_modified) | |
2281 | continue; | |
2282 | ||
4be39163 LP |
2283 | r = sd_bus_message_close_container(m); |
2284 | if (r < 0) | |
2285 | return r; | |
4be39163 | 2286 | |
68313d3d | 2287 | } while (bus->nodes_modified); |
4be39163 LP |
2288 | |
2289 | return sd_bus_send(bus, m, NULL); | |
2290 | } | |
2291 | ||
d9f644e2 | 2292 | _public_ int sd_bus_emit_interfaces_added(sd_bus *bus, const char *path, const char *interface, ...) { |
250a918d | 2293 | char **interfaces; |
4be39163 LP |
2294 | |
2295 | assert_return(bus, -EINVAL); | |
2296 | assert_return(object_path_is_valid(path), -EINVAL); | |
4be39163 LP |
2297 | assert_return(!bus_pid_changed(bus), -ECHILD); |
2298 | ||
a3d59cd1 LP |
2299 | if (!BUS_IS_OPEN(bus->state)) |
2300 | return -ENOTCONN; | |
2301 | ||
250a918d | 2302 | interfaces = strv_from_stdarg_alloca(interface); |
4be39163 LP |
2303 | |
2304 | return sd_bus_emit_interfaces_added_strv(bus, path, interfaces); | |
2305 | } | |
2306 | ||
d9f644e2 | 2307 | _public_ int sd_bus_emit_interfaces_removed_strv(sd_bus *bus, const char *path, char **interfaces) { |
4be39163 LP |
2308 | _cleanup_bus_message_unref_ sd_bus_message *m = NULL; |
2309 | int r; | |
2310 | ||
2311 | assert_return(bus, -EINVAL); | |
2312 | assert_return(object_path_is_valid(path), -EINVAL); | |
4be39163 LP |
2313 | assert_return(!bus_pid_changed(bus), -ECHILD); |
2314 | ||
a3d59cd1 LP |
2315 | if (!BUS_IS_OPEN(bus->state)) |
2316 | return -ENOTCONN; | |
2317 | ||
4be39163 LP |
2318 | if (strv_isempty(interfaces)) |
2319 | return 0; | |
2320 | ||
151b9b96 | 2321 | r = sd_bus_message_new_signal(bus, &m, path, "org.freedesktop.DBus.ObjectManager", "InterfacesRemoved"); |
4be39163 LP |
2322 | if (r < 0) |
2323 | return r; | |
2324 | ||
2325 | r = sd_bus_message_append_basic(m, 'o', path); | |
2326 | if (r < 0) | |
2327 | return r; | |
2328 | ||
2329 | r = sd_bus_message_append_strv(m, interfaces); | |
2330 | if (r < 0) | |
2331 | return r; | |
2332 | ||
2333 | return sd_bus_send(bus, m, NULL); | |
2334 | } | |
2335 | ||
d9f644e2 | 2336 | _public_ int sd_bus_emit_interfaces_removed(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); | |
4be39163 LP |
2341 | assert_return(!bus_pid_changed(bus), -ECHILD); |
2342 | ||
a3d59cd1 LP |
2343 | if (!BUS_IS_OPEN(bus->state)) |
2344 | return -ENOTCONN; | |
2345 | ||
250a918d | 2346 | interfaces = strv_from_stdarg_alloca(interface); |
4be39163 LP |
2347 | |
2348 | return sd_bus_emit_interfaces_removed_strv(bus, path, interfaces); | |
992c052c LP |
2349 | } |
2350 | ||
19befb2d LP |
2351 | _public_ int sd_bus_add_object_manager(sd_bus *bus, sd_bus_slot **slot, const char *path) { |
2352 | sd_bus_slot *s; | |
992c052c | 2353 | struct node *n; |
19befb2d | 2354 | int r; |
992c052c | 2355 | |
dfa92725 LP |
2356 | assert_return(bus, -EINVAL); |
2357 | assert_return(object_path_is_valid(path), -EINVAL); | |
2358 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
992c052c LP |
2359 | |
2360 | n = bus_node_allocate(bus, path); | |
2361 | if (!n) | |
2362 | return -ENOMEM; | |
2363 | ||
19befb2d LP |
2364 | s = bus_slot_allocate(bus, !slot, BUS_NODE_OBJECT_MANAGER, sizeof(struct node_object_manager), NULL); |
2365 | if (!s) { | |
2366 | r = -ENOMEM; | |
2367 | goto fail; | |
2368 | } | |
992c052c | 2369 | |
19befb2d LP |
2370 | s->node_object_manager.node = n; |
2371 | LIST_PREPEND(object_managers, n->object_managers, &s->node_object_manager); | |
2372 | bus->nodes_modified = true; | |
992c052c | 2373 | |
19befb2d LP |
2374 | if (slot) |
2375 | *slot = s; | |
992c052c | 2376 | |
19befb2d | 2377 | return 0; |
992c052c | 2378 | |
19befb2d LP |
2379 | fail: |
2380 | sd_bus_slot_unref(s); | |
992c052c | 2381 | bus_node_gc(bus, n); |
dfa92725 | 2382 | |
19befb2d | 2383 | return r; |
992c052c | 2384 | } |