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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; | |
adacb957 LP |
292 | int r; |
293 | ||
294 | assert(bus); | |
295 | assert(m); | |
296 | assert(c); | |
297 | ||
298 | /* If the entire bus is trusted let's grant access */ | |
299 | if (bus->trusted) | |
300 | return 0; | |
301 | ||
302 | /* If the member is marked UNPRIVILEGED let's grant access */ | |
303 | if (c->vtable->flags & SD_BUS_VTABLE_UNPRIVILEGED) | |
304 | return 0; | |
305 | ||
adacb957 LP |
306 | /* Check have the caller has the requested capability |
307 | * set. Note that the flags value contains the capability | |
308 | * number plus one, which we need to subtract here. We do this | |
309 | * so that we have 0 as special value for "default | |
310 | * capability". */ | |
311 | cap = CAPABILITY_SHIFT(c->vtable->flags); | |
312 | if (cap == 0) | |
313 | cap = CAPABILITY_SHIFT(c->parent->vtable[0].flags); | |
314 | if (cap == 0) | |
315 | cap = CAP_SYS_ADMIN; | |
316 | else | |
317 | cap --; | |
318 | ||
def9a7aa LP |
319 | r = sd_bus_query_sender_privilege(m, cap); |
320 | if (r < 0) | |
321 | return r; | |
adacb957 | 322 | if (r > 0) |
def9a7aa | 323 | return 0; |
adacb957 LP |
324 | |
325 | return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Access to %s.%s() not permitted.", c->interface, c->member); | |
326 | } | |
327 | ||
992c052c LP |
328 | static int method_callbacks_run( |
329 | sd_bus *bus, | |
330 | sd_bus_message *m, | |
331 | struct vtable_member *c, | |
332 | bool require_fallback, | |
333 | bool *found_object) { | |
334 | ||
f00c3121 | 335 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
992c052c LP |
336 | const char *signature; |
337 | void *u; | |
338 | int r; | |
339 | ||
340 | assert(bus); | |
341 | assert(m); | |
342 | assert(c); | |
343 | assert(found_object); | |
344 | ||
345 | if (require_fallback && !c->parent->is_fallback) | |
346 | return 0; | |
347 | ||
adacb957 LP |
348 | r = check_access(bus, m, c, &error); |
349 | if (r < 0) | |
350 | return bus_maybe_reply_error(m, r, &error); | |
351 | ||
f00c3121 | 352 | r = node_vtable_get_userdata(bus, m->path, c->parent, &u, &error); |
992c052c | 353 | if (r <= 0) |
f00c3121 | 354 | return bus_maybe_reply_error(m, r, &error); |
68313d3d LP |
355 | if (bus->nodes_modified) |
356 | return 0; | |
992c052c LP |
357 | |
358 | *found_object = true; | |
359 | ||
68313d3d LP |
360 | if (c->last_iteration == bus->iteration_counter) |
361 | return 0; | |
362 | ||
363 | c->last_iteration = bus->iteration_counter; | |
364 | ||
992c052c LP |
365 | r = sd_bus_message_rewind(m, true); |
366 | if (r < 0) | |
367 | return r; | |
368 | ||
40ca29a1 LP |
369 | signature = sd_bus_message_get_signature(m, true); |
370 | if (!signature) | |
371 | return -EINVAL; | |
992c052c | 372 | |
f00c3121 | 373 | if (!streq(strempty(c->vtable->x.method.signature), signature)) |
86b8d289 LP |
374 | return sd_bus_reply_method_errorf( |
375 | m, | |
376 | SD_BUS_ERROR_INVALID_ARGS, | |
377 | "Invalid arguments '%s' to call %s.%s(), expecting '%s'.", | |
378 | signature, c->interface, c->member, strempty(c->vtable->x.method.signature)); | |
992c052c | 379 | |
6717d473 LP |
380 | /* Keep track what the signature of the reply to this message |
381 | * should be, so that this can be enforced when sealing the | |
382 | * reply. */ | |
383 | m->enforced_reply_signature = strempty(c->vtable->x.method.result); | |
384 | ||
ebcf1f97 | 385 | if (c->vtable->x.method.handler) { |
1b64f838 LP |
386 | sd_bus_slot *slot; |
387 | ||
388 | slot = container_of(c->parent, sd_bus_slot, node_vtable); | |
19befb2d | 389 | |
1b64f838 | 390 | bus->current_slot = sd_bus_slot_ref(slot); |
f00c3121 | 391 | r = c->vtable->x.method.handler(bus, m, u, &error); |
1b64f838 | 392 | bus->current_slot = sd_bus_slot_unref(slot); |
19befb2d | 393 | |
f00c3121 | 394 | return bus_maybe_reply_error(m, r, &error); |
ebcf1f97 | 395 | } |
992c052c LP |
396 | |
397 | /* If the method callback is NULL, make this a successful NOP */ | |
df2d202e | 398 | r = sd_bus_reply_method_return(m, NULL); |
992c052c LP |
399 | if (r < 0) |
400 | return r; | |
401 | ||
402 | return 1; | |
403 | } | |
404 | ||
405 | static int invoke_property_get( | |
406 | sd_bus *bus, | |
19befb2d | 407 | sd_bus_slot *slot, |
992c052c LP |
408 | const sd_bus_vtable *v, |
409 | const char *path, | |
410 | const char *interface, | |
411 | const char *property, | |
ebcf1f97 LP |
412 | sd_bus_message *reply, |
413 | void *userdata, | |
414 | sd_bus_error *error) { | |
992c052c | 415 | |
af8601fa | 416 | const void *p; |
f00c3121 | 417 | int r; |
992c052c LP |
418 | |
419 | assert(bus); | |
19befb2d | 420 | assert(slot); |
992c052c | 421 | assert(v); |
dfa92725 LP |
422 | assert(path); |
423 | assert(interface); | |
424 | assert(property); | |
ebcf1f97 | 425 | assert(reply); |
992c052c | 426 | |
f00c3121 | 427 | if (v->x.property.get) { |
19befb2d | 428 | |
1b64f838 | 429 | bus->current_slot = sd_bus_slot_ref(slot); |
f00c3121 | 430 | r = v->x.property.get(bus, path, interface, property, reply, userdata, error); |
1b64f838 | 431 | bus->current_slot = sd_bus_slot_unref(slot); |
19befb2d | 432 | |
f00c3121 LP |
433 | if (r < 0) |
434 | return r; | |
435 | if (sd_bus_error_is_set(error)) | |
5958d089 | 436 | return -sd_bus_error_get_errno(error); |
f00c3121 LP |
437 | return r; |
438 | } | |
992c052c LP |
439 | |
440 | /* Automatic handling if no callback is defined. */ | |
441 | ||
c13c7de3 | 442 | if (streq(v->x.property.signature, "as")) |
ebcf1f97 | 443 | return sd_bus_message_append_strv(reply, *(char***) userdata); |
c13c7de3 | 444 | |
77a874a3 LP |
445 | assert(signature_is_single(v->x.property.signature, false)); |
446 | assert(bus_type_is_basic(v->x.property.signature[0])); | |
992c052c | 447 | |
77a874a3 | 448 | switch (v->x.property.signature[0]) { |
992c052c LP |
449 | |
450 | case SD_BUS_TYPE_STRING: | |
28d6633a LP |
451 | case SD_BUS_TYPE_SIGNATURE: |
452 | p = strempty(*(char**) userdata); | |
af8601fa KS |
453 | break; |
454 | ||
992c052c | 455 | case SD_BUS_TYPE_OBJECT_PATH: |
992c052c | 456 | p = *(char**) userdata; |
28d6633a | 457 | assert(p); |
992c052c LP |
458 | break; |
459 | ||
460 | default: | |
461 | p = userdata; | |
462 | break; | |
463 | } | |
464 | ||
ebcf1f97 | 465 | return sd_bus_message_append_basic(reply, v->x.property.signature[0], p); |
992c052c LP |
466 | } |
467 | ||
468 | static int invoke_property_set( | |
469 | sd_bus *bus, | |
19befb2d | 470 | sd_bus_slot *slot, |
992c052c LP |
471 | const sd_bus_vtable *v, |
472 | const char *path, | |
473 | const char *interface, | |
474 | const char *property, | |
475 | sd_bus_message *value, | |
ebcf1f97 LP |
476 | void *userdata, |
477 | sd_bus_error *error) { | |
992c052c LP |
478 | |
479 | int r; | |
480 | ||
481 | assert(bus); | |
19befb2d | 482 | assert(slot); |
992c052c | 483 | assert(v); |
dfa92725 LP |
484 | assert(path); |
485 | assert(interface); | |
486 | assert(property); | |
487 | assert(value); | |
992c052c | 488 | |
f00c3121 | 489 | if (v->x.property.set) { |
19befb2d | 490 | |
1b64f838 | 491 | bus->current_slot = sd_bus_slot_ref(slot); |
f00c3121 | 492 | r = v->x.property.set(bus, path, interface, property, value, userdata, error); |
1b64f838 | 493 | bus->current_slot = sd_bus_slot_unref(slot); |
19befb2d | 494 | |
f00c3121 LP |
495 | if (r < 0) |
496 | return r; | |
497 | if (sd_bus_error_is_set(error)) | |
5958d089 | 498 | return -sd_bus_error_get_errno(error); |
f00c3121 LP |
499 | return r; |
500 | } | |
992c052c LP |
501 | |
502 | /* Automatic handling if no callback is defined. */ | |
503 | ||
77a874a3 LP |
504 | assert(signature_is_single(v->x.property.signature, false)); |
505 | assert(bus_type_is_basic(v->x.property.signature[0])); | |
992c052c | 506 | |
77a874a3 | 507 | switch (v->x.property.signature[0]) { |
992c052c LP |
508 | |
509 | case SD_BUS_TYPE_STRING: | |
510 | case SD_BUS_TYPE_OBJECT_PATH: | |
511 | case SD_BUS_TYPE_SIGNATURE: { | |
512 | const char *p; | |
513 | char *n; | |
514 | ||
77a874a3 | 515 | r = sd_bus_message_read_basic(value, v->x.property.signature[0], &p); |
992c052c LP |
516 | if (r < 0) |
517 | return r; | |
518 | ||
519 | n = strdup(p); | |
520 | if (!n) | |
521 | return -ENOMEM; | |
522 | ||
523 | free(*(char**) userdata); | |
524 | *(char**) userdata = n; | |
525 | ||
526 | break; | |
527 | } | |
528 | ||
529 | default: | |
77a874a3 | 530 | r = sd_bus_message_read_basic(value, v->x.property.signature[0], userdata); |
992c052c LP |
531 | if (r < 0) |
532 | return r; | |
533 | ||
534 | break; | |
535 | } | |
536 | ||
537 | return 1; | |
538 | } | |
539 | ||
540 | static int property_get_set_callbacks_run( | |
541 | sd_bus *bus, | |
542 | sd_bus_message *m, | |
543 | struct vtable_member *c, | |
544 | bool require_fallback, | |
545 | bool is_get, | |
546 | bool *found_object) { | |
547 | ||
992c052c | 548 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
ebcf1f97 | 549 | _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; |
19befb2d | 550 | sd_bus_slot *slot; |
c94d7fc3 | 551 | void *u = NULL; |
992c052c LP |
552 | int r; |
553 | ||
554 | assert(bus); | |
555 | assert(m); | |
dfa92725 | 556 | assert(c); |
992c052c LP |
557 | assert(found_object); |
558 | ||
559 | if (require_fallback && !c->parent->is_fallback) | |
560 | return 0; | |
561 | ||
f00c3121 | 562 | r = vtable_property_get_userdata(bus, m->path, c, &u, &error); |
992c052c | 563 | if (r <= 0) |
f00c3121 | 564 | return bus_maybe_reply_error(m, r, &error); |
68313d3d LP |
565 | if (bus->nodes_modified) |
566 | return 0; | |
992c052c | 567 | |
19befb2d LP |
568 | slot = container_of(c->parent, sd_bus_slot, node_vtable); |
569 | ||
992c052c LP |
570 | *found_object = true; |
571 | ||
df2d202e | 572 | r = sd_bus_message_new_method_return(m, &reply); |
992c052c LP |
573 | if (r < 0) |
574 | return r; | |
575 | ||
992c052c | 576 | if (is_get) { |
68313d3d LP |
577 | /* Note that we do not protect against reexecution |
578 | * here (using the last_iteration check, see below), | |
579 | * should the node tree have changed and we got called | |
580 | * again. We assume that property Get() calls are | |
581 | * ultimately without side-effects or if they aren't | |
582 | * then at least idempotent. */ | |
583 | ||
77a874a3 | 584 | r = sd_bus_message_open_container(reply, 'v', c->vtable->x.property.signature); |
992c052c LP |
585 | if (r < 0) |
586 | return r; | |
587 | ||
adacb957 LP |
588 | /* Note that we do not do an access check here. Read |
589 | * access to properties is always unrestricted, since | |
590 | * PropertiesChanged signals broadcast contents | |
591 | * anyway. */ | |
592 | ||
19befb2d | 593 | r = invoke_property_get(bus, slot, c->vtable, m->path, c->interface, c->member, reply, u, &error); |
992c052c | 594 | if (r < 0) |
f00c3121 | 595 | return bus_maybe_reply_error(m, r, &error); |
992c052c | 596 | |
68313d3d LP |
597 | if (bus->nodes_modified) |
598 | return 0; | |
599 | ||
992c052c LP |
600 | r = sd_bus_message_close_container(reply); |
601 | if (r < 0) | |
602 | return r; | |
603 | ||
604 | } else { | |
605 | if (c->vtable->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY) | |
ebcf1f97 | 606 | return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_PROPERTY_READ_ONLY, "Property '%s' is not writable.", c->member); |
68313d3d | 607 | |
ebcf1f97 LP |
608 | /* Avoid that we call the set routine more than once |
609 | * if the processing of this message got restarted | |
610 | * because the node tree changed. */ | |
611 | if (c->last_iteration == bus->iteration_counter) | |
612 | return 0; | |
992c052c | 613 | |
ebcf1f97 | 614 | c->last_iteration = bus->iteration_counter; |
992c052c | 615 | |
ebcf1f97 LP |
616 | r = sd_bus_message_enter_container(m, 'v', c->vtable->x.property.signature); |
617 | if (r < 0) | |
618 | return r; | |
992c052c | 619 | |
adacb957 LP |
620 | r = check_access(bus, m, c, &error); |
621 | if (r < 0) | |
622 | return bus_maybe_reply_error(m, r, &error); | |
623 | ||
19befb2d | 624 | r = invoke_property_set(bus, slot, c->vtable, m->path, c->interface, c->member, m, u, &error); |
ebcf1f97 | 625 | if (r < 0) |
f00c3121 | 626 | return bus_maybe_reply_error(m, r, &error); |
992c052c | 627 | |
68313d3d LP |
628 | if (bus->nodes_modified) |
629 | return 0; | |
630 | ||
992c052c LP |
631 | r = sd_bus_message_exit_container(m); |
632 | if (r < 0) | |
633 | return r; | |
634 | } | |
635 | ||
636 | r = sd_bus_send(bus, reply, NULL); | |
637 | if (r < 0) | |
638 | return r; | |
639 | ||
640 | return 1; | |
641 | } | |
642 | ||
a03e4337 LP |
643 | static int vtable_append_one_property( |
644 | sd_bus *bus, | |
645 | sd_bus_message *reply, | |
646 | const char *path, | |
647 | struct node_vtable *c, | |
648 | const sd_bus_vtable *v, | |
649 | void *userdata, | |
650 | sd_bus_error *error) { | |
651 | ||
19befb2d | 652 | sd_bus_slot *slot; |
a03e4337 LP |
653 | int r; |
654 | ||
655 | assert(bus); | |
656 | assert(reply); | |
657 | assert(path); | |
658 | assert(c); | |
659 | assert(v); | |
660 | ||
661 | r = sd_bus_message_open_container(reply, 'e', "sv"); | |
662 | if (r < 0) | |
663 | return r; | |
664 | ||
665 | r = sd_bus_message_append(reply, "s", v->x.property.member); | |
666 | if (r < 0) | |
667 | return r; | |
668 | ||
669 | r = sd_bus_message_open_container(reply, 'v', v->x.property.signature); | |
670 | if (r < 0) | |
671 | return r; | |
672 | ||
19befb2d LP |
673 | slot = container_of(c, sd_bus_slot, node_vtable); |
674 | ||
675 | r = invoke_property_get(bus, slot, v, path, c->interface, v->x.property.member, reply, vtable_property_convert_userdata(v, userdata), error); | |
a03e4337 LP |
676 | if (r < 0) |
677 | return r; | |
678 | if (bus->nodes_modified) | |
679 | return 0; | |
680 | ||
681 | r = sd_bus_message_close_container(reply); | |
682 | if (r < 0) | |
683 | return r; | |
684 | ||
685 | r = sd_bus_message_close_container(reply); | |
686 | if (r < 0) | |
687 | return r; | |
688 | ||
689 | return 0; | |
690 | } | |
691 | ||
992c052c LP |
692 | static int vtable_append_all_properties( |
693 | sd_bus *bus, | |
694 | sd_bus_message *reply, | |
695 | const char *path, | |
696 | struct node_vtable *c, | |
697 | void *userdata, | |
698 | sd_bus_error *error) { | |
699 | ||
700 | const sd_bus_vtable *v; | |
701 | int r; | |
702 | ||
703 | assert(bus); | |
704 | assert(reply); | |
dfa92725 | 705 | assert(path); |
992c052c LP |
706 | assert(c); |
707 | ||
6e8df5f0 LP |
708 | if (c->vtable[0].flags & SD_BUS_VTABLE_HIDDEN) |
709 | return 1; | |
710 | ||
992c052c LP |
711 | for (v = c->vtable+1; v->type != _SD_BUS_VTABLE_END; v++) { |
712 | if (v->type != _SD_BUS_VTABLE_PROPERTY && v->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY) | |
713 | continue; | |
714 | ||
6e8df5f0 LP |
715 | if (v->flags & SD_BUS_VTABLE_HIDDEN) |
716 | continue; | |
717 | ||
a03e4337 | 718 | r = vtable_append_one_property(bus, reply, path, c, v, userdata, error); |
f00c3121 LP |
719 | if (r < 0) |
720 | return r; | |
68313d3d LP |
721 | if (bus->nodes_modified) |
722 | return 0; | |
992c052c LP |
723 | } |
724 | ||
725 | return 1; | |
726 | } | |
727 | ||
728 | static int property_get_all_callbacks_run( | |
729 | sd_bus *bus, | |
730 | sd_bus_message *m, | |
731 | struct node_vtable *first, | |
732 | bool require_fallback, | |
733 | const char *iface, | |
734 | bool *found_object) { | |
735 | ||
736 | _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; | |
737 | struct node_vtable *c; | |
bd037038 | 738 | bool found_interface; |
992c052c LP |
739 | int r; |
740 | ||
741 | assert(bus); | |
742 | assert(m); | |
743 | assert(found_object); | |
744 | ||
df2d202e | 745 | r = sd_bus_message_new_method_return(m, &reply); |
992c052c LP |
746 | if (r < 0) |
747 | return r; | |
748 | ||
749 | r = sd_bus_message_open_container(reply, 'a', "{sv}"); | |
750 | if (r < 0) | |
751 | return r; | |
752 | ||
38911893 | 753 | found_interface = !iface || |
bd037038 LP |
754 | streq(iface, "org.freedesktop.DBus.Properties") || |
755 | streq(iface, "org.freedesktop.DBus.Peer") || | |
756 | streq(iface, "org.freedesktop.DBus.Introspectable"); | |
757 | ||
992c052c LP |
758 | LIST_FOREACH(vtables, c, first) { |
759 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; | |
760 | void *u; | |
761 | ||
762 | if (require_fallback && !c->is_fallback) | |
763 | continue; | |
764 | ||
f00c3121 | 765 | r = node_vtable_get_userdata(bus, m->path, c, &u, &error); |
992c052c | 766 | if (r < 0) |
f00c3121 | 767 | return bus_maybe_reply_error(m, r, &error); |
68313d3d LP |
768 | if (bus->nodes_modified) |
769 | return 0; | |
992c052c LP |
770 | if (r == 0) |
771 | continue; | |
772 | ||
773 | *found_object = true; | |
774 | ||
775 | if (iface && !streq(c->interface, iface)) | |
776 | continue; | |
777 | found_interface = true; | |
778 | ||
992c052c LP |
779 | r = vtable_append_all_properties(bus, reply, m->path, c, u, &error); |
780 | if (r < 0) | |
f00c3121 | 781 | return bus_maybe_reply_error(m, r, &error); |
68313d3d LP |
782 | if (bus->nodes_modified) |
783 | return 0; | |
992c052c LP |
784 | } |
785 | ||
786 | if (!found_interface) { | |
787 | r = sd_bus_reply_method_errorf( | |
df2d202e | 788 | m, |
40ca29a1 | 789 | SD_BUS_ERROR_UNKNOWN_INTERFACE, |
992c052c LP |
790 | "Unknown interface '%s'.", iface); |
791 | if (r < 0) | |
792 | return r; | |
793 | ||
794 | return 1; | |
795 | } | |
796 | ||
797 | r = sd_bus_message_close_container(reply); | |
798 | if (r < 0) | |
799 | return r; | |
800 | ||
801 | r = sd_bus_send(bus, reply, NULL); | |
802 | if (r < 0) | |
803 | return r; | |
804 | ||
805 | return 1; | |
806 | } | |
807 | ||
808 | static bool bus_node_with_object_manager(sd_bus *bus, struct node *n) { | |
809 | assert(bus); | |
dfa92725 | 810 | assert(n); |
992c052c | 811 | |
19befb2d | 812 | if (n->object_managers) |
992c052c LP |
813 | return true; |
814 | ||
815 | if (n->parent) | |
816 | return bus_node_with_object_manager(bus, n->parent); | |
817 | ||
818 | return false; | |
819 | } | |
820 | ||
dfa92725 LP |
821 | static bool bus_node_exists( |
822 | sd_bus *bus, | |
823 | struct node *n, | |
824 | const char *path, | |
825 | bool require_fallback) { | |
826 | ||
992c052c LP |
827 | struct node_vtable *c; |
828 | struct node_callback *k; | |
829 | ||
830 | assert(bus); | |
831 | assert(n); | |
dfa92725 | 832 | assert(path); |
992c052c LP |
833 | |
834 | /* Tests if there's anything attached directly to this node | |
835 | * for the specified path */ | |
836 | ||
837 | LIST_FOREACH(callbacks, k, n->callbacks) { | |
838 | if (require_fallback && !k->is_fallback) | |
839 | continue; | |
840 | ||
841 | return true; | |
842 | } | |
843 | ||
844 | LIST_FOREACH(vtables, c, n->vtables) { | |
f00c3121 | 845 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
992c052c LP |
846 | |
847 | if (require_fallback && !c->is_fallback) | |
848 | continue; | |
849 | ||
f00c3121 | 850 | if (node_vtable_get_userdata(bus, path, c, NULL, &error) > 0) |
992c052c | 851 | return true; |
68313d3d LP |
852 | if (bus->nodes_modified) |
853 | return false; | |
992c052c LP |
854 | } |
855 | ||
19befb2d | 856 | return !require_fallback && (n->enumerators || n->object_managers); |
992c052c LP |
857 | } |
858 | ||
859 | static int process_introspect( | |
860 | sd_bus *bus, | |
861 | sd_bus_message *m, | |
862 | struct node *n, | |
863 | bool require_fallback, | |
864 | bool *found_object) { | |
865 | ||
f00c3121 | 866 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
992c052c LP |
867 | _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; |
868 | _cleanup_set_free_free_ Set *s = NULL; | |
718db961 | 869 | const char *previous_interface = NULL; |
992c052c LP |
870 | struct introspect intro; |
871 | struct node_vtable *c; | |
872 | bool empty; | |
873 | int r; | |
874 | ||
875 | assert(bus); | |
876 | assert(m); | |
877 | assert(n); | |
878 | assert(found_object); | |
879 | ||
f00c3121 | 880 | r = get_child_nodes(bus, m->path, n, &s, &error); |
992c052c | 881 | if (r < 0) |
f00c3121 | 882 | return bus_maybe_reply_error(m, r, &error); |
68313d3d LP |
883 | if (bus->nodes_modified) |
884 | return 0; | |
992c052c | 885 | |
7fb411f0 | 886 | r = introspect_begin(&intro, bus->trusted); |
992c052c LP |
887 | if (r < 0) |
888 | return r; | |
889 | ||
890 | r = introspect_write_default_interfaces(&intro, bus_node_with_object_manager(bus, n)); | |
891 | if (r < 0) | |
892 | return r; | |
893 | ||
894 | empty = set_isempty(s); | |
895 | ||
896 | LIST_FOREACH(vtables, c, n->vtables) { | |
897 | if (require_fallback && !c->is_fallback) | |
898 | continue; | |
899 | ||
f00c3121 LP |
900 | r = node_vtable_get_userdata(bus, m->path, c, NULL, &error); |
901 | if (r < 0) { | |
902 | r = bus_maybe_reply_error(m, r, &error); | |
903 | goto finish; | |
904 | } | |
905 | if (bus->nodes_modified) { | |
906 | r = 0; | |
907 | goto finish; | |
908 | } | |
992c052c LP |
909 | if (r == 0) |
910 | continue; | |
911 | ||
912 | empty = false; | |
913 | ||
6e8df5f0 LP |
914 | if (c->vtable[0].flags & SD_BUS_VTABLE_HIDDEN) |
915 | continue; | |
916 | ||
718db961 LP |
917 | if (!streq_ptr(previous_interface, c->interface)) { |
918 | ||
919 | if (previous_interface) | |
920 | fputs(" </interface>\n", intro.f); | |
921 | ||
922 | fprintf(intro.f, " <interface name=\"%s\">\n", c->interface); | |
923 | } | |
924 | ||
925 | r = introspect_write_interface(&intro, c->vtable); | |
992c052c LP |
926 | if (r < 0) |
927 | goto finish; | |
718db961 LP |
928 | |
929 | previous_interface = c->interface; | |
992c052c LP |
930 | } |
931 | ||
718db961 LP |
932 | if (previous_interface) |
933 | fputs(" </interface>\n", intro.f); | |
934 | ||
992c052c LP |
935 | if (empty) { |
936 | /* Nothing?, let's see if we exist at all, and if not | |
937 | * refuse to do anything */ | |
938 | r = bus_node_exists(bus, n, m->path, require_fallback); | |
939 | if (r < 0) | |
940 | return r; | |
68313d3d LP |
941 | if (bus->nodes_modified) |
942 | return 0; | |
992c052c LP |
943 | if (r == 0) |
944 | goto finish; | |
945 | } | |
946 | ||
947 | *found_object = true; | |
948 | ||
949 | r = introspect_write_child_nodes(&intro, s, m->path); | |
950 | if (r < 0) | |
951 | goto finish; | |
952 | ||
953 | r = introspect_finish(&intro, bus, m, &reply); | |
954 | if (r < 0) | |
955 | goto finish; | |
956 | ||
957 | r = sd_bus_send(bus, reply, NULL); | |
958 | if (r < 0) | |
959 | goto finish; | |
960 | ||
961 | r = 1; | |
962 | ||
963 | finish: | |
964 | introspect_free(&intro); | |
965 | return r; | |
966 | } | |
967 | ||
992c052c LP |
968 | static int object_manager_serialize_path( |
969 | sd_bus *bus, | |
970 | sd_bus_message *reply, | |
971 | const char *prefix, | |
972 | const char *path, | |
973 | bool require_fallback, | |
974 | sd_bus_error *error) { | |
975 | ||
718db961 LP |
976 | const char *previous_interface = NULL; |
977 | bool found_something = false; | |
992c052c LP |
978 | struct node_vtable *i; |
979 | struct node *n; | |
980 | int r; | |
981 | ||
982 | assert(bus); | |
983 | assert(reply); | |
984 | assert(prefix); | |
985 | assert(path); | |
986 | assert(error); | |
987 | ||
988 | n = hashmap_get(bus->nodes, prefix); | |
989 | if (!n) | |
990 | return 0; | |
991 | ||
992c052c | 992 | LIST_FOREACH(vtables, i, n->vtables) { |
92db139e | 993 | void *u; |
992c052c LP |
994 | |
995 | if (require_fallback && !i->is_fallback) | |
996 | continue; | |
997 | ||
f00c3121 | 998 | r = node_vtable_get_userdata(bus, path, i, &u, error); |
92db139e LP |
999 | if (r < 0) |
1000 | return r; | |
68313d3d LP |
1001 | if (bus->nodes_modified) |
1002 | return 0; | |
92db139e LP |
1003 | if (r == 0) |
1004 | continue; | |
1005 | ||
1006 | if (!found_something) { | |
718db961 LP |
1007 | |
1008 | /* Open the object part */ | |
1009 | ||
92db139e LP |
1010 | r = sd_bus_message_open_container(reply, 'e', "oa{sa{sv}}"); |
1011 | if (r < 0) | |
1012 | return r; | |
1013 | ||
1014 | r = sd_bus_message_append(reply, "o", path); | |
1015 | if (r < 0) | |
1016 | return r; | |
1017 | ||
1018 | r = sd_bus_message_open_container(reply, 'a', "{sa{sv}}"); | |
1019 | if (r < 0) | |
1020 | return r; | |
1021 | ||
1022 | found_something = true; | |
1023 | } | |
1024 | ||
718db961 LP |
1025 | if (!streq_ptr(previous_interface, i->interface)) { |
1026 | ||
1027 | /* Maybe close the previous interface part */ | |
1028 | ||
1029 | if (previous_interface) { | |
1030 | r = sd_bus_message_close_container(reply); | |
1031 | if (r < 0) | |
1032 | return r; | |
1033 | ||
1034 | r = sd_bus_message_close_container(reply); | |
1035 | if (r < 0) | |
1036 | return r; | |
1037 | } | |
1038 | ||
1039 | /* Open the new interface part */ | |
1040 | ||
1041 | r = sd_bus_message_open_container(reply, 'e', "sa{sv}"); | |
1042 | if (r < 0) | |
1043 | return r; | |
1044 | ||
1045 | r = sd_bus_message_append(reply, "s", i->interface); | |
1046 | if (r < 0) | |
1047 | return r; | |
1048 | ||
1049 | r = sd_bus_message_open_container(reply, 'a', "{sv}"); | |
1050 | if (r < 0) | |
1051 | return r; | |
1052 | } | |
1053 | ||
1054 | r = vtable_append_all_properties(bus, reply, path, i, u, error); | |
992c052c LP |
1055 | if (r < 0) |
1056 | return r; | |
68313d3d LP |
1057 | if (bus->nodes_modified) |
1058 | return 0; | |
718db961 LP |
1059 | |
1060 | previous_interface = i->interface; | |
1061 | } | |
1062 | ||
1063 | if (previous_interface) { | |
1064 | r = sd_bus_message_close_container(reply); | |
1065 | if (r < 0) | |
1066 | return r; | |
1067 | ||
1068 | r = sd_bus_message_close_container(reply); | |
1069 | if (r < 0) | |
1070 | return r; | |
992c052c LP |
1071 | } |
1072 | ||
92db139e LP |
1073 | if (found_something) { |
1074 | r = sd_bus_message_close_container(reply); | |
1075 | if (r < 0) | |
1076 | return r; | |
992c052c | 1077 | |
92db139e LP |
1078 | r = sd_bus_message_close_container(reply); |
1079 | if (r < 0) | |
1080 | return r; | |
1081 | } | |
992c052c LP |
1082 | |
1083 | return 1; | |
1084 | } | |
1085 | ||
1086 | static int object_manager_serialize_path_and_fallbacks( | |
1087 | sd_bus *bus, | |
1088 | sd_bus_message *reply, | |
1089 | const char *path, | |
1090 | sd_bus_error *error) { | |
1091 | ||
92e189e5 | 1092 | char *prefix; |
992c052c LP |
1093 | int r; |
1094 | ||
1095 | assert(bus); | |
1096 | assert(reply); | |
1097 | assert(path); | |
1098 | assert(error); | |
1099 | ||
1100 | /* First, add all vtables registered for this path */ | |
1101 | r = object_manager_serialize_path(bus, reply, path, path, false, error); | |
1102 | if (r < 0) | |
1103 | return r; | |
68313d3d LP |
1104 | if (bus->nodes_modified) |
1105 | return 0; | |
992c052c LP |
1106 | |
1107 | /* Second, add fallback vtables registered for any of the prefixes */ | |
92e189e5 LP |
1108 | prefix = alloca(strlen(path) + 1); |
1109 | OBJECT_PATH_FOREACH_PREFIX(prefix, path) { | |
1110 | r = object_manager_serialize_path(bus, reply, prefix, path, true, error); | |
1111 | if (r < 0) | |
1112 | return r; | |
68313d3d LP |
1113 | if (bus->nodes_modified) |
1114 | return 0; | |
992c052c LP |
1115 | } |
1116 | ||
1117 | return 0; | |
1118 | } | |
1119 | ||
1120 | static int process_get_managed_objects( | |
1121 | sd_bus *bus, | |
1122 | sd_bus_message *m, | |
1123 | struct node *n, | |
1124 | bool require_fallback, | |
1125 | bool *found_object) { | |
1126 | ||
f00c3121 | 1127 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
992c052c LP |
1128 | _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; |
1129 | _cleanup_set_free_free_ Set *s = NULL; | |
1130 | bool empty; | |
1131 | int r; | |
1132 | ||
1133 | assert(bus); | |
1134 | assert(m); | |
1135 | assert(n); | |
1136 | assert(found_object); | |
1137 | ||
1138 | if (!bus_node_with_object_manager(bus, n)) | |
1139 | return 0; | |
1140 | ||
f00c3121 | 1141 | r = get_child_nodes(bus, m->path, n, &s, &error); |
992c052c LP |
1142 | if (r < 0) |
1143 | return r; | |
68313d3d LP |
1144 | if (bus->nodes_modified) |
1145 | return 0; | |
992c052c | 1146 | |
df2d202e | 1147 | r = sd_bus_message_new_method_return(m, &reply); |
992c052c LP |
1148 | if (r < 0) |
1149 | return r; | |
1150 | ||
1151 | r = sd_bus_message_open_container(reply, 'a', "{oa{sa{sv}}}"); | |
1152 | if (r < 0) | |
1153 | return r; | |
1154 | ||
1155 | empty = set_isempty(s); | |
1156 | if (empty) { | |
1157 | struct node_vtable *c; | |
1158 | ||
1159 | /* Hmm, so we have no children? Then let's check | |
1160 | * whether we exist at all, i.e. whether at least one | |
1161 | * vtable exists. */ | |
1162 | ||
1163 | LIST_FOREACH(vtables, c, n->vtables) { | |
1164 | ||
1165 | if (require_fallback && !c->is_fallback) | |
1166 | continue; | |
1167 | ||
1168 | if (r < 0) | |
1169 | return r; | |
1170 | if (r == 0) | |
1171 | continue; | |
1172 | ||
1173 | empty = false; | |
1174 | break; | |
1175 | } | |
1176 | ||
1177 | if (empty) | |
1178 | return 0; | |
1179 | } else { | |
1180 | Iterator i; | |
1181 | char *path; | |
1182 | ||
1183 | SET_FOREACH(path, s, i) { | |
992c052c LP |
1184 | r = object_manager_serialize_path_and_fallbacks(bus, reply, path, &error); |
1185 | if (r < 0) | |
f00c3121 | 1186 | return r; |
68313d3d LP |
1187 | |
1188 | if (bus->nodes_modified) | |
1189 | return 0; | |
992c052c LP |
1190 | } |
1191 | } | |
1192 | ||
1193 | r = sd_bus_message_close_container(reply); | |
1194 | if (r < 0) | |
1195 | return r; | |
1196 | ||
1197 | r = sd_bus_send(bus, reply, NULL); | |
1198 | if (r < 0) | |
1199 | return r; | |
1200 | ||
1201 | return 1; | |
1202 | } | |
1203 | ||
1204 | static int object_find_and_run( | |
1205 | sd_bus *bus, | |
1206 | sd_bus_message *m, | |
1207 | const char *p, | |
1208 | bool require_fallback, | |
1209 | bool *found_object) { | |
1210 | ||
1211 | struct node *n; | |
1212 | struct vtable_member vtable_key, *v; | |
1213 | int r; | |
1214 | ||
1215 | assert(bus); | |
1216 | assert(m); | |
1217 | assert(p); | |
1218 | assert(found_object); | |
1219 | ||
1220 | n = hashmap_get(bus->nodes, p); | |
1221 | if (!n) | |
1222 | return 0; | |
1223 | ||
1224 | /* First, try object callbacks */ | |
1225 | r = node_callbacks_run(bus, m, n->callbacks, require_fallback, found_object); | |
1226 | if (r != 0) | |
1227 | return r; | |
68313d3d LP |
1228 | if (bus->nodes_modified) |
1229 | return 0; | |
992c052c LP |
1230 | |
1231 | if (!m->interface || !m->member) | |
1232 | return 0; | |
1233 | ||
1234 | /* Then, look for a known method */ | |
1235 | vtable_key.path = (char*) p; | |
1236 | vtable_key.interface = m->interface; | |
1237 | vtable_key.member = m->member; | |
1238 | ||
1239 | v = hashmap_get(bus->vtable_methods, &vtable_key); | |
1240 | if (v) { | |
1241 | r = method_callbacks_run(bus, m, v, require_fallback, found_object); | |
1242 | if (r != 0) | |
1243 | return r; | |
68313d3d LP |
1244 | if (bus->nodes_modified) |
1245 | return 0; | |
992c052c LP |
1246 | } |
1247 | ||
1248 | /* Then, look for a known property */ | |
1249 | if (streq(m->interface, "org.freedesktop.DBus.Properties")) { | |
1250 | bool get = false; | |
1251 | ||
1252 | get = streq(m->member, "Get"); | |
1253 | ||
1254 | if (get || streq(m->member, "Set")) { | |
1255 | ||
1256 | r = sd_bus_message_rewind(m, true); | |
1257 | if (r < 0) | |
1258 | return r; | |
1259 | ||
1260 | vtable_key.path = (char*) p; | |
1261 | ||
1262 | r = sd_bus_message_read(m, "ss", &vtable_key.interface, &vtable_key.member); | |
1263 | if (r < 0) | |
0fc5ab90 | 1264 | return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected interface and member parameters"); |
992c052c LP |
1265 | |
1266 | v = hashmap_get(bus->vtable_properties, &vtable_key); | |
1267 | if (v) { | |
1268 | r = property_get_set_callbacks_run(bus, m, v, require_fallback, get, found_object); | |
1269 | if (r != 0) | |
1270 | return r; | |
1271 | } | |
1272 | ||
1273 | } else if (streq(m->member, "GetAll")) { | |
1274 | const char *iface; | |
1275 | ||
1276 | r = sd_bus_message_rewind(m, true); | |
1277 | if (r < 0) | |
1278 | return r; | |
1279 | ||
1280 | r = sd_bus_message_read(m, "s", &iface); | |
1281 | if (r < 0) | |
0fc5ab90 | 1282 | return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected interface parameter"); |
992c052c LP |
1283 | |
1284 | if (iface[0] == 0) | |
1285 | iface = NULL; | |
1286 | ||
1287 | r = property_get_all_callbacks_run(bus, m, n->vtables, require_fallback, iface, found_object); | |
1288 | if (r != 0) | |
1289 | return r; | |
1290 | } | |
1291 | ||
1292 | } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Introspectable", "Introspect")) { | |
1293 | ||
0fc5ab90 LP |
1294 | if (!isempty(sd_bus_message_get_signature(m, true))) |
1295 | return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected no parameters"); | |
1296 | ||
992c052c LP |
1297 | r = process_introspect(bus, m, n, require_fallback, found_object); |
1298 | if (r != 0) | |
1299 | return r; | |
1300 | ||
1301 | } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus.ObjectManager", "GetManagedObjects")) { | |
1302 | ||
0fc5ab90 LP |
1303 | if (!isempty(sd_bus_message_get_signature(m, true))) |
1304 | return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected no parameters"); | |
1305 | ||
992c052c LP |
1306 | r = process_get_managed_objects(bus, m, n, require_fallback, found_object); |
1307 | if (r != 0) | |
1308 | return r; | |
1309 | } | |
1310 | ||
68313d3d LP |
1311 | if (bus->nodes_modified) |
1312 | return 0; | |
1313 | ||
992c052c LP |
1314 | if (!*found_object) { |
1315 | r = bus_node_exists(bus, n, m->path, require_fallback); | |
1316 | if (r < 0) | |
1317 | return r; | |
992c052c LP |
1318 | if (r > 0) |
1319 | *found_object = true; | |
1320 | } | |
1321 | ||
1322 | return 0; | |
1323 | } | |
1324 | ||
1325 | int bus_process_object(sd_bus *bus, sd_bus_message *m) { | |
1326 | int r; | |
1327 | size_t pl; | |
1328 | bool found_object = false; | |
1329 | ||
1330 | assert(bus); | |
1331 | assert(m); | |
1332 | ||
09365592 LP |
1333 | if (bus->hello_flags & KDBUS_HELLO_MONITOR) |
1334 | return 0; | |
1335 | ||
40ca29a1 | 1336 | if (m->header->type != SD_BUS_MESSAGE_METHOD_CALL) |
992c052c LP |
1337 | return 0; |
1338 | ||
992c052c LP |
1339 | if (hashmap_isempty(bus->nodes)) |
1340 | return 0; | |
1341 | ||
f820cf99 LP |
1342 | /* Never respond to broadcast messages */ |
1343 | if (bus->bus_client && !m->destination) | |
1344 | return 0; | |
1345 | ||
adacb957 LP |
1346 | assert(m->path); |
1347 | assert(m->member); | |
1348 | ||
992c052c LP |
1349 | pl = strlen(m->path); |
1350 | do { | |
92e189e5 | 1351 | char prefix[pl+1]; |
992c052c LP |
1352 | |
1353 | bus->nodes_modified = false; | |
1354 | ||
1355 | r = object_find_and_run(bus, m, m->path, false, &found_object); | |
1356 | if (r != 0) | |
1357 | return r; | |
1358 | ||
1359 | /* Look for fallback prefixes */ | |
92e189e5 | 1360 | OBJECT_PATH_FOREACH_PREFIX(prefix, m->path) { |
992c052c LP |
1361 | |
1362 | if (bus->nodes_modified) | |
1363 | break; | |
1364 | ||
92e189e5 | 1365 | r = object_find_and_run(bus, m, prefix, true, &found_object); |
992c052c LP |
1366 | if (r != 0) |
1367 | return r; | |
1368 | } | |
1369 | ||
1370 | } while (bus->nodes_modified); | |
1371 | ||
1372 | if (!found_object) | |
1373 | return 0; | |
1374 | ||
1375 | if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Properties", "Get") || | |
1376 | sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Properties", "Set")) | |
1377 | r = sd_bus_reply_method_errorf( | |
df2d202e | 1378 | m, |
40ca29a1 | 1379 | SD_BUS_ERROR_UNKNOWN_PROPERTY, |
992c052c LP |
1380 | "Unknown property or interface."); |
1381 | else | |
1382 | r = sd_bus_reply_method_errorf( | |
df2d202e | 1383 | m, |
40ca29a1 | 1384 | SD_BUS_ERROR_UNKNOWN_METHOD, |
992c052c LP |
1385 | "Unknown method '%s' or interface '%s'.", m->member, m->interface); |
1386 | ||
1387 | if (r < 0) | |
1388 | return r; | |
1389 | ||
1390 | return 1; | |
1391 | } | |
1392 | ||
1393 | static struct node *bus_node_allocate(sd_bus *bus, const char *path) { | |
1394 | struct node *n, *parent; | |
1395 | const char *e; | |
2fd069b1 ZJS |
1396 | _cleanup_free_ char *s = NULL; |
1397 | char *p; | |
992c052c LP |
1398 | int r; |
1399 | ||
1400 | assert(bus); | |
1401 | assert(path); | |
1402 | assert(path[0] == '/'); | |
1403 | ||
1404 | n = hashmap_get(bus->nodes, path); | |
1405 | if (n) | |
1406 | return n; | |
1407 | ||
1408 | r = hashmap_ensure_allocated(&bus->nodes, string_hash_func, string_compare_func); | |
1409 | if (r < 0) | |
1410 | return NULL; | |
1411 | ||
1412 | s = strdup(path); | |
1413 | if (!s) | |
1414 | return NULL; | |
1415 | ||
1416 | if (streq(path, "/")) | |
1417 | parent = NULL; | |
1418 | else { | |
1419 | e = strrchr(path, '/'); | |
1420 | assert(e); | |
1421 | ||
1422 | p = strndupa(path, MAX(1, path - e)); | |
1423 | ||
1424 | parent = bus_node_allocate(bus, p); | |
2fd069b1 | 1425 | if (!parent) |
992c052c | 1426 | return NULL; |
992c052c LP |
1427 | } |
1428 | ||
1429 | n = new0(struct node, 1); | |
1430 | if (!n) | |
1431 | return NULL; | |
1432 | ||
1433 | n->parent = parent; | |
1434 | n->path = s; | |
2fd069b1 | 1435 | s = NULL; /* do not free */ |
992c052c | 1436 | |
8e050193 | 1437 | r = hashmap_put(bus->nodes, n->path, n); |
992c052c | 1438 | if (r < 0) { |
2fd069b1 | 1439 | free(n->path); |
992c052c LP |
1440 | free(n); |
1441 | return NULL; | |
1442 | } | |
1443 | ||
1444 | if (parent) | |
71fda00f | 1445 | LIST_PREPEND(siblings, parent->child, n); |
992c052c LP |
1446 | |
1447 | return n; | |
1448 | } | |
1449 | ||
19befb2d | 1450 | void bus_node_gc(sd_bus *b, struct node *n) { |
992c052c LP |
1451 | assert(b); |
1452 | ||
1453 | if (!n) | |
1454 | return; | |
1455 | ||
1456 | if (n->child || | |
1457 | n->callbacks || | |
1458 | n->vtables || | |
1459 | n->enumerators || | |
19befb2d | 1460 | n->object_managers) |
992c052c LP |
1461 | return; |
1462 | ||
1463 | assert(hashmap_remove(b->nodes, n->path) == n); | |
1464 | ||
1465 | if (n->parent) | |
71fda00f | 1466 | LIST_REMOVE(siblings, n->parent->child, n); |
992c052c LP |
1467 | |
1468 | free(n->path); | |
1469 | bus_node_gc(b, n->parent); | |
1470 | free(n); | |
1471 | } | |
1472 | ||
1473 | static int bus_add_object( | |
dfa92725 | 1474 | sd_bus *bus, |
19befb2d | 1475 | sd_bus_slot **slot, |
992c052c LP |
1476 | bool fallback, |
1477 | const char *path, | |
1478 | sd_bus_message_handler_t callback, | |
1479 | void *userdata) { | |
1480 | ||
19befb2d | 1481 | sd_bus_slot *s; |
992c052c LP |
1482 | struct node *n; |
1483 | int r; | |
1484 | ||
dfa92725 LP |
1485 | assert_return(bus, -EINVAL); |
1486 | assert_return(object_path_is_valid(path), -EINVAL); | |
1487 | assert_return(callback, -EINVAL); | |
1488 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
992c052c | 1489 | |
dfa92725 | 1490 | n = bus_node_allocate(bus, path); |
992c052c LP |
1491 | if (!n) |
1492 | return -ENOMEM; | |
1493 | ||
19befb2d LP |
1494 | s = bus_slot_allocate(bus, !slot, BUS_NODE_CALLBACK, sizeof(struct node_callback), userdata); |
1495 | if (!s) { | |
992c052c LP |
1496 | r = -ENOMEM; |
1497 | goto fail; | |
1498 | } | |
1499 | ||
19befb2d LP |
1500 | s->node_callback.callback = callback; |
1501 | s->node_callback.is_fallback = fallback; | |
992c052c | 1502 | |
19befb2d LP |
1503 | s->node_callback.node = n; |
1504 | LIST_PREPEND(callbacks, n->callbacks, &s->node_callback); | |
68313d3d LP |
1505 | bus->nodes_modified = true; |
1506 | ||
19befb2d LP |
1507 | if (slot) |
1508 | *slot = s; | |
1509 | ||
992c052c LP |
1510 | return 0; |
1511 | ||
1512 | fail: | |
19befb2d | 1513 | sd_bus_slot_unref(s); |
dfa92725 | 1514 | bus_node_gc(bus, n); |
19befb2d | 1515 | |
992c052c LP |
1516 | return r; |
1517 | } | |
1518 | ||
19befb2d | 1519 | _public_ int sd_bus_add_object( |
992c052c | 1520 | sd_bus *bus, |
19befb2d | 1521 | sd_bus_slot **slot, |
992c052c LP |
1522 | const char *path, |
1523 | sd_bus_message_handler_t callback, | |
1524 | void *userdata) { | |
1525 | ||
19befb2d | 1526 | return bus_add_object(bus, slot, false, path, callback, userdata); |
992c052c LP |
1527 | } |
1528 | ||
19befb2d LP |
1529 | _public_ int sd_bus_add_fallback( |
1530 | sd_bus *bus, | |
1531 | sd_bus_slot **slot, | |
1532 | const char *prefix, | |
1533 | sd_bus_message_handler_t callback, | |
1534 | void *userdata) { | |
992c052c | 1535 | |
19befb2d | 1536 | return bus_add_object(bus, slot, true, prefix, callback, userdata); |
992c052c LP |
1537 | } |
1538 | ||
9bf3b535 | 1539 | static unsigned long vtable_member_hash_func(const void *a, const uint8_t hash_key[HASH_KEY_SIZE]) { |
992c052c | 1540 | const struct vtable_member *m = a; |
9bf3b535 LP |
1541 | uint8_t hash_key2[HASH_KEY_SIZE]; |
1542 | unsigned long ret; | |
992c052c | 1543 | |
dfa92725 LP |
1544 | assert(m); |
1545 | ||
9bf3b535 LP |
1546 | ret = string_hash_func(m->path, hash_key); |
1547 | ||
1548 | /* Use a slightly different hash key for the interface */ | |
1549 | memcpy(hash_key2, hash_key, HASH_KEY_SIZE); | |
1550 | hash_key2[0]++; | |
1551 | ret ^= string_hash_func(m->interface, hash_key2); | |
1552 | ||
1553 | /* And an even different one for the member */ | |
1554 | hash_key2[0]++; | |
1555 | ret ^= string_hash_func(m->member, hash_key2); | |
1556 | ||
1557 | return ret; | |
992c052c LP |
1558 | } |
1559 | ||
1560 | static int vtable_member_compare_func(const void *a, const void *b) { | |
1561 | const struct vtable_member *x = a, *y = b; | |
1562 | int r; | |
1563 | ||
dfa92725 LP |
1564 | assert(x); |
1565 | assert(y); | |
1566 | ||
992c052c LP |
1567 | r = strcmp(x->path, y->path); |
1568 | if (r != 0) | |
1569 | return r; | |
1570 | ||
1571 | r = strcmp(x->interface, y->interface); | |
1572 | if (r != 0) | |
1573 | return r; | |
1574 | ||
1575 | return strcmp(x->member, y->member); | |
1576 | } | |
1577 | ||
1578 | static int add_object_vtable_internal( | |
1579 | sd_bus *bus, | |
19befb2d | 1580 | sd_bus_slot **slot, |
992c052c LP |
1581 | const char *path, |
1582 | const char *interface, | |
1583 | const sd_bus_vtable *vtable, | |
1584 | bool fallback, | |
1585 | sd_bus_object_find_t find, | |
1586 | void *userdata) { | |
1587 | ||
2915234d | 1588 | sd_bus_slot *s = NULL; |
19befb2d | 1589 | struct node_vtable *i, *existing = NULL; |
992c052c LP |
1590 | const sd_bus_vtable *v; |
1591 | struct node *n; | |
1592 | int r; | |
1593 | ||
dfa92725 LP |
1594 | assert_return(bus, -EINVAL); |
1595 | assert_return(object_path_is_valid(path), -EINVAL); | |
1596 | assert_return(interface_name_is_valid(interface), -EINVAL); | |
1597 | assert_return(vtable, -EINVAL); | |
1598 | assert_return(vtable[0].type == _SD_BUS_VTABLE_START, -EINVAL); | |
1599 | assert_return(vtable[0].x.start.element_size == sizeof(struct sd_bus_vtable), -EINVAL); | |
1600 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
718db961 LP |
1601 | assert_return(!streq(interface, "org.freedesktop.DBus.Properties") && |
1602 | !streq(interface, "org.freedesktop.DBus.Introspectable") && | |
1603 | !streq(interface, "org.freedesktop.DBus.Peer") && | |
1604 | !streq(interface, "org.freedesktop.DBus.ObjectManager"), -EINVAL); | |
992c052c LP |
1605 | |
1606 | r = hashmap_ensure_allocated(&bus->vtable_methods, vtable_member_hash_func, vtable_member_compare_func); | |
1607 | if (r < 0) | |
1608 | return r; | |
1609 | ||
1610 | r = hashmap_ensure_allocated(&bus->vtable_properties, vtable_member_hash_func, vtable_member_compare_func); | |
1611 | if (r < 0) | |
1612 | return r; | |
1613 | ||
1614 | n = bus_node_allocate(bus, path); | |
1615 | if (!n) | |
1616 | return -ENOMEM; | |
1617 | ||
1618 | LIST_FOREACH(vtables, i, n->vtables) { | |
992c052c LP |
1619 | if (i->is_fallback != fallback) { |
1620 | r = -EPROTOTYPE; | |
1621 | goto fail; | |
1622 | } | |
718db961 LP |
1623 | |
1624 | if (streq(i->interface, interface)) { | |
1625 | ||
1626 | if (i->vtable == vtable) { | |
1627 | r = -EEXIST; | |
1628 | goto fail; | |
1629 | } | |
1630 | ||
1631 | existing = i; | |
1632 | } | |
992c052c LP |
1633 | } |
1634 | ||
19befb2d LP |
1635 | s = bus_slot_allocate(bus, !slot, BUS_NODE_VTABLE, sizeof(struct node_vtable), userdata); |
1636 | if (!s) { | |
992c052c LP |
1637 | r = -ENOMEM; |
1638 | goto fail; | |
1639 | } | |
1640 | ||
19befb2d LP |
1641 | s->node_vtable.is_fallback = fallback; |
1642 | s->node_vtable.vtable = vtable; | |
1643 | s->node_vtable.find = find; | |
992c052c | 1644 | |
19befb2d LP |
1645 | s->node_vtable.interface = strdup(interface); |
1646 | if (!s->node_vtable.interface) { | |
992c052c LP |
1647 | r = -ENOMEM; |
1648 | goto fail; | |
1649 | } | |
1650 | ||
19befb2d | 1651 | for (v = s->node_vtable.vtable+1; v->type != _SD_BUS_VTABLE_END; v++) { |
992c052c LP |
1652 | |
1653 | switch (v->type) { | |
1654 | ||
1655 | case _SD_BUS_VTABLE_METHOD: { | |
1656 | struct vtable_member *m; | |
1657 | ||
77a874a3 LP |
1658 | if (!member_name_is_valid(v->x.method.member) || |
1659 | !signature_is_valid(strempty(v->x.method.signature), false) || | |
1660 | !signature_is_valid(strempty(v->x.method.result), false) || | |
1661 | !(v->x.method.handler || (isempty(v->x.method.signature) && isempty(v->x.method.result))) || | |
df98a87b | 1662 | v->flags & (SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE|SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION)) { |
992c052c LP |
1663 | r = -EINVAL; |
1664 | goto fail; | |
1665 | } | |
1666 | ||
1667 | m = new0(struct vtable_member, 1); | |
1668 | if (!m) { | |
1669 | r = -ENOMEM; | |
1670 | goto fail; | |
1671 | } | |
1672 | ||
19befb2d | 1673 | m->parent = &s->node_vtable; |
992c052c | 1674 | m->path = n->path; |
19befb2d | 1675 | m->interface = s->node_vtable.interface; |
77a874a3 | 1676 | m->member = v->x.method.member; |
992c052c LP |
1677 | m->vtable = v; |
1678 | ||
1679 | r = hashmap_put(bus->vtable_methods, m, m); | |
1680 | if (r < 0) { | |
1681 | free(m); | |
1682 | goto fail; | |
1683 | } | |
1684 | ||
1685 | break; | |
1686 | } | |
1687 | ||
1688 | case _SD_BUS_VTABLE_WRITABLE_PROPERTY: | |
1689 | ||
77a874a3 | 1690 | if (!(v->x.property.set || bus_type_is_basic(v->x.property.signature[0]))) { |
992c052c LP |
1691 | r = -EINVAL; |
1692 | goto fail; | |
1693 | } | |
1694 | ||
1695 | /* Fall through */ | |
1696 | ||
1697 | case _SD_BUS_VTABLE_PROPERTY: { | |
1698 | struct vtable_member *m; | |
1699 | ||
77a874a3 LP |
1700 | if (!member_name_is_valid(v->x.property.member) || |
1701 | !signature_is_single(v->x.property.signature, false) || | |
c13c7de3 | 1702 | !(v->x.property.get || bus_type_is_basic(v->x.property.signature[0]) || streq(v->x.property.signature, "as")) || |
992c052c | 1703 | v->flags & SD_BUS_VTABLE_METHOD_NO_REPLY || |
df98a87b | 1704 | (!!(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 | 1705 | (v->flags & SD_BUS_VTABLE_UNPRIVILEGED && v->type == _SD_BUS_VTABLE_PROPERTY)) { |
992c052c LP |
1706 | r = -EINVAL; |
1707 | goto fail; | |
1708 | } | |
1709 | ||
992c052c LP |
1710 | m = new0(struct vtable_member, 1); |
1711 | if (!m) { | |
1712 | r = -ENOMEM; | |
1713 | goto fail; | |
1714 | } | |
1715 | ||
19befb2d | 1716 | m->parent = &s->node_vtable; |
992c052c | 1717 | m->path = n->path; |
19befb2d | 1718 | m->interface = s->node_vtable.interface; |
77a874a3 | 1719 | m->member = v->x.property.member; |
992c052c LP |
1720 | m->vtable = v; |
1721 | ||
1722 | r = hashmap_put(bus->vtable_properties, m, m); | |
1723 | if (r < 0) { | |
1724 | free(m); | |
1725 | goto fail; | |
1726 | } | |
1727 | ||
1728 | break; | |
1729 | } | |
1730 | ||
1731 | case _SD_BUS_VTABLE_SIGNAL: | |
1732 | ||
77a874a3 | 1733 | if (!member_name_is_valid(v->x.signal.member) || |
adacb957 LP |
1734 | !signature_is_valid(strempty(v->x.signal.signature), false) || |
1735 | v->flags & SD_BUS_VTABLE_UNPRIVILEGED) { | |
992c052c LP |
1736 | r = -EINVAL; |
1737 | goto fail; | |
1738 | } | |
1739 | ||
1740 | break; | |
1741 | ||
1742 | default: | |
1743 | r = -EINVAL; | |
1744 | goto fail; | |
1745 | } | |
1746 | } | |
1747 | ||
19befb2d LP |
1748 | s->node_vtable.node = n; |
1749 | LIST_INSERT_AFTER(vtables, n->vtables, existing, &s->node_vtable); | |
68313d3d LP |
1750 | bus->nodes_modified = true; |
1751 | ||
19befb2d LP |
1752 | if (slot) |
1753 | *slot = s; | |
1754 | ||
992c052c LP |
1755 | return 0; |
1756 | ||
1757 | fail: | |
19befb2d | 1758 | sd_bus_slot_unref(s); |
dfa92725 LP |
1759 | bus_node_gc(bus, n); |
1760 | ||
19befb2d | 1761 | return r; |
992c052c LP |
1762 | } |
1763 | ||
d9f644e2 | 1764 | _public_ int sd_bus_add_object_vtable( |
992c052c | 1765 | sd_bus *bus, |
19befb2d | 1766 | sd_bus_slot **slot, |
992c052c LP |
1767 | const char *path, |
1768 | const char *interface, | |
1769 | const sd_bus_vtable *vtable, | |
1770 | void *userdata) { | |
1771 | ||
19befb2d | 1772 | return add_object_vtable_internal(bus, slot, path, interface, vtable, false, NULL, userdata); |
992c052c LP |
1773 | } |
1774 | ||
d9f644e2 | 1775 | _public_ int sd_bus_add_fallback_vtable( |
992c052c | 1776 | sd_bus *bus, |
19befb2d LP |
1777 | sd_bus_slot **slot, |
1778 | const char *prefix, | |
718db961 LP |
1779 | const char *interface, |
1780 | const sd_bus_vtable *vtable, | |
1781 | sd_bus_object_find_t find, | |
1782 | void *userdata) { | |
992c052c | 1783 | |
19befb2d | 1784 | return add_object_vtable_internal(bus, slot, prefix, interface, vtable, true, find, userdata); |
992c052c LP |
1785 | } |
1786 | ||
d9f644e2 | 1787 | _public_ int sd_bus_add_node_enumerator( |
992c052c | 1788 | sd_bus *bus, |
19befb2d | 1789 | sd_bus_slot **slot, |
992c052c LP |
1790 | const char *path, |
1791 | sd_bus_node_enumerator_t callback, | |
1792 | void *userdata) { | |
1793 | ||
19befb2d | 1794 | sd_bus_slot *s; |
992c052c LP |
1795 | struct node *n; |
1796 | int r; | |
1797 | ||
dfa92725 LP |
1798 | assert_return(bus, -EINVAL); |
1799 | assert_return(object_path_is_valid(path), -EINVAL); | |
1800 | assert_return(callback, -EINVAL); | |
1801 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
992c052c LP |
1802 | |
1803 | n = bus_node_allocate(bus, path); | |
1804 | if (!n) | |
1805 | return -ENOMEM; | |
1806 | ||
19befb2d LP |
1807 | s = bus_slot_allocate(bus, !slot, BUS_NODE_ENUMERATOR, sizeof(struct node_enumerator), userdata); |
1808 | if (!s) { | |
992c052c LP |
1809 | r = -ENOMEM; |
1810 | goto fail; | |
1811 | } | |
1812 | ||
19befb2d | 1813 | s->node_enumerator.callback = callback; |
68313d3d | 1814 | |
19befb2d LP |
1815 | s->node_enumerator.node = n; |
1816 | LIST_PREPEND(enumerators, n->enumerators, &s->node_enumerator); | |
68313d3d LP |
1817 | bus->nodes_modified = true; |
1818 | ||
19befb2d LP |
1819 | if (slot) |
1820 | *slot = s; | |
1821 | ||
992c052c LP |
1822 | return 0; |
1823 | ||
1824 | fail: | |
19befb2d | 1825 | sd_bus_slot_unref(s); |
992c052c LP |
1826 | bus_node_gc(bus, n); |
1827 | ||
19befb2d | 1828 | return r; |
992c052c LP |
1829 | } |
1830 | ||
1831 | static int emit_properties_changed_on_interface( | |
1832 | sd_bus *bus, | |
1833 | const char *prefix, | |
1834 | const char *path, | |
1835 | const char *interface, | |
1836 | bool require_fallback, | |
46525bfc | 1837 | bool *found_interface, |
992c052c LP |
1838 | char **names) { |
1839 | ||
f00c3121 | 1840 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
992c052c | 1841 | _cleanup_bus_message_unref_ sd_bus_message *m = NULL; |
718db961 LP |
1842 | bool has_invalidating = false, has_changing = false; |
1843 | struct vtable_member key = {}; | |
992c052c LP |
1844 | struct node_vtable *c; |
1845 | struct node *n; | |
1846 | char **property; | |
1847 | void *u = NULL; | |
1848 | int r; | |
1849 | ||
1850 | assert(bus); | |
dfa92725 | 1851 | assert(prefix); |
992c052c LP |
1852 | assert(path); |
1853 | assert(interface); | |
46525bfc | 1854 | assert(found_interface); |
992c052c LP |
1855 | |
1856 | n = hashmap_get(bus->nodes, prefix); | |
1857 | if (!n) | |
1858 | return 0; | |
1859 | ||
151b9b96 | 1860 | r = sd_bus_message_new_signal(bus, &m, path, "org.freedesktop.DBus.Properties", "PropertiesChanged"); |
992c052c LP |
1861 | if (r < 0) |
1862 | return r; | |
1863 | ||
1864 | r = sd_bus_message_append(m, "s", interface); | |
1865 | if (r < 0) | |
1866 | return r; | |
1867 | ||
1868 | r = sd_bus_message_open_container(m, 'a', "{sv}"); | |
1869 | if (r < 0) | |
1870 | return r; | |
1871 | ||
1872 | key.path = prefix; | |
1873 | key.interface = interface; | |
1874 | ||
718db961 LP |
1875 | LIST_FOREACH(vtables, c, n->vtables) { |
1876 | if (require_fallback && !c->is_fallback) | |
1877 | continue; | |
992c052c | 1878 | |
718db961 | 1879 | if (!streq(c->interface, interface)) |
992c052c | 1880 | continue; |
992c052c | 1881 | |
f00c3121 | 1882 | r = node_vtable_get_userdata(bus, path, c, &u, &error); |
992c052c LP |
1883 | if (r < 0) |
1884 | return r; | |
718db961 LP |
1885 | if (bus->nodes_modified) |
1886 | return 0; | |
1887 | if (r == 0) | |
1888 | continue; | |
992c052c | 1889 | |
46525bfc LP |
1890 | *found_interface = true; |
1891 | ||
a03e4337 LP |
1892 | if (names) { |
1893 | /* If the caller specified a list of | |
1894 | * properties we include exactly those in the | |
1895 | * PropertiesChanged message */ | |
992c052c | 1896 | |
a03e4337 LP |
1897 | STRV_FOREACH(property, names) { |
1898 | struct vtable_member *v; | |
992c052c | 1899 | |
a03e4337 | 1900 | assert_return(member_name_is_valid(*property), -EINVAL); |
718db961 | 1901 | |
a03e4337 LP |
1902 | key.member = *property; |
1903 | v = hashmap_get(bus->vtable_properties, &key); | |
1904 | if (!v) | |
1905 | return -ENOENT; | |
1906 | ||
1907 | /* If there are two vtables for the same | |
1908 | * interface, let's handle this property when | |
1909 | * we come to that vtable. */ | |
1910 | if (c != v->parent) | |
1911 | continue; | |
992c052c | 1912 | |
a03e4337 LP |
1913 | assert_return(v->vtable->flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE || |
1914 | v->vtable->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION, -EDOM); | |
992c052c | 1915 | |
a03e4337 LP |
1916 | assert_return(!(v->vtable->flags & SD_BUS_VTABLE_HIDDEN), -EDOM); |
1917 | ||
1918 | if (v->vtable->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION) { | |
1919 | has_invalidating = true; | |
1920 | continue; | |
1921 | } | |
1922 | ||
1923 | has_changing = true; | |
1924 | ||
1925 | r = vtable_append_one_property(bus, m, m->path, c, v->vtable, u, &error); | |
1926 | if (r < 0) | |
1927 | return r; | |
1928 | if (bus->nodes_modified) | |
1929 | return 0; | |
718db961 | 1930 | } |
a03e4337 LP |
1931 | } else { |
1932 | const sd_bus_vtable *v; | |
718db961 | 1933 | |
a03e4337 LP |
1934 | /* If the caller specified no properties list |
1935 | * we include all properties that are marked | |
1936 | * as changing in the message. */ | |
718db961 | 1937 | |
a03e4337 LP |
1938 | for (v = c->vtable+1; v->type != _SD_BUS_VTABLE_END; v++) { |
1939 | if (v->type != _SD_BUS_VTABLE_PROPERTY && v->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY) | |
1940 | continue; | |
718db961 | 1941 | |
a03e4337 LP |
1942 | if (v->flags & SD_BUS_VTABLE_HIDDEN) |
1943 | continue; | |
718db961 | 1944 | |
a03e4337 LP |
1945 | if (v->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION) { |
1946 | has_invalidating = true; | |
1947 | continue; | |
1948 | } | |
718db961 | 1949 | |
a03e4337 LP |
1950 | if (!(v->flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE)) |
1951 | continue; | |
718db961 | 1952 | |
a03e4337 | 1953 | has_changing = true; |
718db961 | 1954 | |
a03e4337 LP |
1955 | r = vtable_append_one_property(bus, m, m->path, c, v, u, &error); |
1956 | if (r < 0) | |
1957 | return r; | |
1958 | if (bus->nodes_modified) | |
1959 | return 0; | |
1960 | } | |
718db961 | 1961 | } |
992c052c LP |
1962 | } |
1963 | ||
718db961 LP |
1964 | if (!has_invalidating && !has_changing) |
1965 | return 0; | |
1966 | ||
992c052c LP |
1967 | r = sd_bus_message_close_container(m); |
1968 | if (r < 0) | |
1969 | return r; | |
1970 | ||
1971 | r = sd_bus_message_open_container(m, 'a', "s"); | |
1972 | if (r < 0) | |
1973 | return r; | |
1974 | ||
1975 | if (has_invalidating) { | |
718db961 LP |
1976 | LIST_FOREACH(vtables, c, n->vtables) { |
1977 | if (require_fallback && !c->is_fallback) | |
1978 | continue; | |
992c052c | 1979 | |
718db961 | 1980 | if (!streq(c->interface, interface)) |
992c052c LP |
1981 | continue; |
1982 | ||
f00c3121 | 1983 | r = node_vtable_get_userdata(bus, path, c, &u, &error); |
992c052c LP |
1984 | if (r < 0) |
1985 | return r; | |
718db961 LP |
1986 | if (bus->nodes_modified) |
1987 | return 0; | |
1988 | if (r == 0) | |
1989 | continue; | |
1990 | ||
a03e4337 LP |
1991 | if (names) { |
1992 | STRV_FOREACH(property, names) { | |
1993 | struct vtable_member *v; | |
718db961 | 1994 | |
a03e4337 LP |
1995 | key.member = *property; |
1996 | assert_se(v = hashmap_get(bus->vtable_properties, &key)); | |
1997 | assert(c == v->parent); | |
718db961 | 1998 | |
a03e4337 LP |
1999 | if (!(v->vtable->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION)) |
2000 | continue; | |
718db961 | 2001 | |
a03e4337 LP |
2002 | r = sd_bus_message_append(m, "s", *property); |
2003 | if (r < 0) | |
2004 | return r; | |
2005 | } | |
2006 | } else { | |
2007 | const sd_bus_vtable *v; | |
2008 | ||
2009 | for (v = c->vtable+1; v->type != _SD_BUS_VTABLE_END; v++) { | |
2010 | if (v->type != _SD_BUS_VTABLE_PROPERTY && v->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY) | |
2011 | continue; | |
2012 | ||
2013 | if (v->flags & SD_BUS_VTABLE_HIDDEN) | |
2014 | continue; | |
2015 | ||
2016 | if (!(v->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION)) | |
2017 | continue; | |
2018 | ||
2019 | r = sd_bus_message_append(m, "s", v->x.property.member); | |
2020 | if (r < 0) | |
2021 | return r; | |
2022 | } | |
718db961 | 2023 | } |
992c052c LP |
2024 | } |
2025 | } | |
2026 | ||
2027 | r = sd_bus_message_close_container(m); | |
2028 | if (r < 0) | |
2029 | return r; | |
2030 | ||
2031 | r = sd_bus_send(bus, m, NULL); | |
2032 | if (r < 0) | |
2033 | return r; | |
2034 | ||
2035 | return 1; | |
2036 | } | |
2037 | ||
d9f644e2 | 2038 | _public_ int sd_bus_emit_properties_changed_strv( |
dfa92725 LP |
2039 | sd_bus *bus, |
2040 | const char *path, | |
2041 | const char *interface, | |
2042 | char **names) { | |
2043 | ||
8ce2afd6 | 2044 | BUS_DONT_DESTROY(bus); |
46525bfc | 2045 | bool found_interface = false; |
92e189e5 | 2046 | char *prefix; |
992c052c LP |
2047 | int r; |
2048 | ||
dfa92725 LP |
2049 | assert_return(bus, -EINVAL); |
2050 | assert_return(object_path_is_valid(path), -EINVAL); | |
2051 | assert_return(interface_name_is_valid(interface), -EINVAL); | |
dfa92725 LP |
2052 | assert_return(!bus_pid_changed(bus), -ECHILD); |
2053 | ||
a3d59cd1 LP |
2054 | if (!BUS_IS_OPEN(bus->state)) |
2055 | return -ENOTCONN; | |
a03e4337 LP |
2056 | |
2057 | /* A non-NULL but empty names list means nothing needs to be | |
2058 | generated. A NULL list OTOH indicates that all properties | |
2059 | that are set to EMITS_CHANGE or EMITS_INVALIDATION shall be | |
2060 | included in the PropertiesChanged message. */ | |
2061 | if (names && names[0] == NULL) | |
dfa92725 | 2062 | return 0; |
992c052c | 2063 | |
68313d3d LP |
2064 | do { |
2065 | bus->nodes_modified = false; | |
992c052c | 2066 | |
46525bfc | 2067 | r = emit_properties_changed_on_interface(bus, path, path, interface, false, &found_interface, names); |
92e189e5 LP |
2068 | if (r != 0) |
2069 | return r; | |
68313d3d LP |
2070 | if (bus->nodes_modified) |
2071 | continue; | |
2072 | ||
2073 | prefix = alloca(strlen(path) + 1); | |
2074 | OBJECT_PATH_FOREACH_PREFIX(prefix, path) { | |
46525bfc | 2075 | r = emit_properties_changed_on_interface(bus, prefix, path, interface, true, &found_interface, names); |
68313d3d LP |
2076 | if (r != 0) |
2077 | return r; | |
2078 | if (bus->nodes_modified) | |
2079 | break; | |
2080 | } | |
2081 | ||
2082 | } while (bus->nodes_modified); | |
992c052c | 2083 | |
46525bfc | 2084 | return found_interface ? 0 : -ENOENT; |
992c052c LP |
2085 | } |
2086 | ||
d9f644e2 | 2087 | _public_ int sd_bus_emit_properties_changed( |
dfa92725 LP |
2088 | sd_bus *bus, |
2089 | const char *path, | |
2090 | const char *interface, | |
2091 | const char *name, ...) { | |
2092 | ||
250a918d | 2093 | char **names; |
992c052c | 2094 | |
dfa92725 LP |
2095 | assert_return(bus, -EINVAL); |
2096 | assert_return(object_path_is_valid(path), -EINVAL); | |
2097 | assert_return(interface_name_is_valid(interface), -EINVAL); | |
dfa92725 LP |
2098 | assert_return(!bus_pid_changed(bus), -ECHILD); |
2099 | ||
a3d59cd1 LP |
2100 | if (!BUS_IS_OPEN(bus->state)) |
2101 | return -ENOTCONN; | |
2102 | ||
dfa92725 LP |
2103 | if (!name) |
2104 | return 0; | |
2105 | ||
250a918d | 2106 | names = strv_from_stdarg_alloca(name); |
992c052c LP |
2107 | |
2108 | return sd_bus_emit_properties_changed_strv(bus, path, interface, names); | |
2109 | } | |
2110 | ||
4be39163 LP |
2111 | static int interfaces_added_append_one_prefix( |
2112 | sd_bus *bus, | |
2113 | sd_bus_message *m, | |
2114 | const char *prefix, | |
2115 | const char *path, | |
2116 | const char *interface, | |
2117 | bool require_fallback) { | |
2118 | ||
2119 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; | |
718db961 | 2120 | bool found_interface = false; |
4be39163 LP |
2121 | struct node_vtable *c; |
2122 | struct node *n; | |
2123 | void *u = NULL; | |
2124 | int r; | |
2125 | ||
2126 | assert(bus); | |
2127 | assert(m); | |
2128 | assert(prefix); | |
2129 | assert(path); | |
2130 | assert(interface); | |
2131 | ||
2132 | n = hashmap_get(bus->nodes, prefix); | |
2133 | if (!n) | |
2134 | return 0; | |
2135 | ||
2136 | LIST_FOREACH(vtables, c, n->vtables) { | |
2137 | if (require_fallback && !c->is_fallback) | |
2138 | continue; | |
2139 | ||
718db961 LP |
2140 | if (!streq(c->interface, interface)) |
2141 | continue; | |
4be39163 | 2142 | |
f00c3121 | 2143 | r = node_vtable_get_userdata(bus, path, c, &u, &error); |
718db961 LP |
2144 | if (r < 0) |
2145 | return r; | |
2146 | if (bus->nodes_modified) | |
2147 | return 0; | |
2148 | if (r == 0) | |
2149 | continue; | |
4be39163 | 2150 | |
718db961 LP |
2151 | if (!found_interface) { |
2152 | r = sd_bus_message_append_basic(m, 's', interface); | |
2153 | if (r < 0) | |
2154 | return r; | |
4be39163 | 2155 | |
718db961 LP |
2156 | r = sd_bus_message_open_container(m, 'a', "{sv}"); |
2157 | if (r < 0) | |
2158 | return r; | |
4be39163 | 2159 | |
718db961 LP |
2160 | found_interface = true; |
2161 | } | |
4be39163 | 2162 | |
718db961 LP |
2163 | r = vtable_append_all_properties(bus, m, path, c, u, &error); |
2164 | if (r < 0) | |
2165 | return r; | |
2166 | if (bus->nodes_modified) | |
2167 | return 0; | |
2168 | } | |
4be39163 | 2169 | |
718db961 LP |
2170 | if (found_interface) { |
2171 | r = sd_bus_message_close_container(m); | |
2172 | if (r < 0) | |
2173 | return r; | |
2174 | } | |
4be39163 | 2175 | |
718db961 | 2176 | return found_interface; |
4be39163 LP |
2177 | } |
2178 | ||
2179 | static int interfaces_added_append_one( | |
2180 | sd_bus *bus, | |
2181 | sd_bus_message *m, | |
2182 | const char *path, | |
2183 | const char *interface) { | |
2184 | ||
2185 | char *prefix; | |
2186 | int r; | |
2187 | ||
2188 | assert(bus); | |
2189 | assert(m); | |
2190 | assert(path); | |
2191 | assert(interface); | |
2192 | ||
2193 | r = interfaces_added_append_one_prefix(bus, m, path, path, interface, false); | |
2194 | if (r != 0) | |
2195 | return r; | |
68313d3d LP |
2196 | if (bus->nodes_modified) |
2197 | return 0; | |
4be39163 LP |
2198 | |
2199 | prefix = alloca(strlen(path) + 1); | |
2200 | OBJECT_PATH_FOREACH_PREFIX(prefix, path) { | |
2201 | r = interfaces_added_append_one_prefix(bus, m, prefix, path, interface, true); | |
2202 | if (r != 0) | |
2203 | return r; | |
68313d3d LP |
2204 | if (bus->nodes_modified) |
2205 | return 0; | |
4be39163 LP |
2206 | } |
2207 | ||
2208 | return -ENOENT; | |
992c052c LP |
2209 | } |
2210 | ||
d9f644e2 | 2211 | _public_ int sd_bus_emit_interfaces_added_strv(sd_bus *bus, const char *path, char **interfaces) { |
8ce2afd6 LP |
2212 | BUS_DONT_DESTROY(bus); |
2213 | ||
4be39163 LP |
2214 | _cleanup_bus_message_unref_ sd_bus_message *m = NULL; |
2215 | char **i; | |
2216 | int r; | |
2217 | ||
2218 | assert_return(bus, -EINVAL); | |
2219 | assert_return(object_path_is_valid(path), -EINVAL); | |
4be39163 LP |
2220 | assert_return(!bus_pid_changed(bus), -ECHILD); |
2221 | ||
a3d59cd1 LP |
2222 | if (!BUS_IS_OPEN(bus->state)) |
2223 | return -ENOTCONN; | |
2224 | ||
4be39163 LP |
2225 | if (strv_isempty(interfaces)) |
2226 | return 0; | |
2227 | ||
68313d3d LP |
2228 | do { |
2229 | bus->nodes_modified = false; | |
1b02f301 | 2230 | m = sd_bus_message_unref(m); |
4be39163 | 2231 | |
151b9b96 | 2232 | r = sd_bus_message_new_signal(bus, &m, path, "org.freedesktop.DBus.ObjectManager", "InterfacesAdded"); |
68313d3d LP |
2233 | if (r < 0) |
2234 | return r; | |
4be39163 | 2235 | |
68313d3d | 2236 | r = sd_bus_message_append_basic(m, 'o', path); |
4be39163 LP |
2237 | if (r < 0) |
2238 | return r; | |
2239 | ||
68313d3d | 2240 | r = sd_bus_message_open_container(m, 'a', "{sa{sv}}"); |
4be39163 LP |
2241 | if (r < 0) |
2242 | return r; | |
2243 | ||
68313d3d LP |
2244 | STRV_FOREACH(i, interfaces) { |
2245 | assert_return(interface_name_is_valid(*i), -EINVAL); | |
2246 | ||
2247 | r = sd_bus_message_open_container(m, 'e', "sa{sv}"); | |
2248 | if (r < 0) | |
2249 | return r; | |
2250 | ||
2251 | r = interfaces_added_append_one(bus, m, path, *i); | |
2252 | if (r < 0) | |
2253 | return r; | |
2254 | ||
2255 | if (bus->nodes_modified) | |
2256 | break; | |
2257 | ||
2258 | r = sd_bus_message_close_container(m); | |
2259 | if (r < 0) | |
2260 | return r; | |
2261 | } | |
2262 | ||
2263 | if (bus->nodes_modified) | |
2264 | continue; | |
2265 | ||
4be39163 LP |
2266 | r = sd_bus_message_close_container(m); |
2267 | if (r < 0) | |
2268 | return r; | |
4be39163 | 2269 | |
68313d3d | 2270 | } while (bus->nodes_modified); |
4be39163 LP |
2271 | |
2272 | return sd_bus_send(bus, m, NULL); | |
2273 | } | |
2274 | ||
d9f644e2 | 2275 | _public_ int sd_bus_emit_interfaces_added(sd_bus *bus, const char *path, const char *interface, ...) { |
250a918d | 2276 | char **interfaces; |
4be39163 LP |
2277 | |
2278 | assert_return(bus, -EINVAL); | |
2279 | assert_return(object_path_is_valid(path), -EINVAL); | |
4be39163 LP |
2280 | assert_return(!bus_pid_changed(bus), -ECHILD); |
2281 | ||
a3d59cd1 LP |
2282 | if (!BUS_IS_OPEN(bus->state)) |
2283 | return -ENOTCONN; | |
2284 | ||
250a918d | 2285 | interfaces = strv_from_stdarg_alloca(interface); |
4be39163 LP |
2286 | |
2287 | return sd_bus_emit_interfaces_added_strv(bus, path, interfaces); | |
2288 | } | |
2289 | ||
d9f644e2 | 2290 | _public_ int sd_bus_emit_interfaces_removed_strv(sd_bus *bus, const char *path, char **interfaces) { |
4be39163 LP |
2291 | _cleanup_bus_message_unref_ sd_bus_message *m = NULL; |
2292 | int r; | |
2293 | ||
2294 | assert_return(bus, -EINVAL); | |
2295 | assert_return(object_path_is_valid(path), -EINVAL); | |
4be39163 LP |
2296 | assert_return(!bus_pid_changed(bus), -ECHILD); |
2297 | ||
a3d59cd1 LP |
2298 | if (!BUS_IS_OPEN(bus->state)) |
2299 | return -ENOTCONN; | |
2300 | ||
4be39163 LP |
2301 | if (strv_isempty(interfaces)) |
2302 | return 0; | |
2303 | ||
151b9b96 | 2304 | r = sd_bus_message_new_signal(bus, &m, path, "org.freedesktop.DBus.ObjectManager", "InterfacesRemoved"); |
4be39163 LP |
2305 | if (r < 0) |
2306 | return r; | |
2307 | ||
2308 | r = sd_bus_message_append_basic(m, 'o', path); | |
2309 | if (r < 0) | |
2310 | return r; | |
2311 | ||
2312 | r = sd_bus_message_append_strv(m, interfaces); | |
2313 | if (r < 0) | |
2314 | return r; | |
2315 | ||
2316 | return sd_bus_send(bus, m, NULL); | |
2317 | } | |
2318 | ||
d9f644e2 | 2319 | _public_ int sd_bus_emit_interfaces_removed(sd_bus *bus, const char *path, const char *interface, ...) { |
250a918d | 2320 | char **interfaces; |
4be39163 LP |
2321 | |
2322 | assert_return(bus, -EINVAL); | |
2323 | assert_return(object_path_is_valid(path), -EINVAL); | |
4be39163 LP |
2324 | assert_return(!bus_pid_changed(bus), -ECHILD); |
2325 | ||
a3d59cd1 LP |
2326 | if (!BUS_IS_OPEN(bus->state)) |
2327 | return -ENOTCONN; | |
2328 | ||
250a918d | 2329 | interfaces = strv_from_stdarg_alloca(interface); |
4be39163 LP |
2330 | |
2331 | return sd_bus_emit_interfaces_removed_strv(bus, path, interfaces); | |
992c052c LP |
2332 | } |
2333 | ||
19befb2d LP |
2334 | _public_ int sd_bus_add_object_manager(sd_bus *bus, sd_bus_slot **slot, const char *path) { |
2335 | sd_bus_slot *s; | |
992c052c | 2336 | struct node *n; |
19befb2d | 2337 | int r; |
992c052c | 2338 | |
dfa92725 LP |
2339 | assert_return(bus, -EINVAL); |
2340 | assert_return(object_path_is_valid(path), -EINVAL); | |
2341 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
992c052c LP |
2342 | |
2343 | n = bus_node_allocate(bus, path); | |
2344 | if (!n) | |
2345 | return -ENOMEM; | |
2346 | ||
19befb2d LP |
2347 | s = bus_slot_allocate(bus, !slot, BUS_NODE_OBJECT_MANAGER, sizeof(struct node_object_manager), NULL); |
2348 | if (!s) { | |
2349 | r = -ENOMEM; | |
2350 | goto fail; | |
2351 | } | |
992c052c | 2352 | |
19befb2d LP |
2353 | s->node_object_manager.node = n; |
2354 | LIST_PREPEND(object_managers, n->object_managers, &s->node_object_manager); | |
2355 | bus->nodes_modified = true; | |
992c052c | 2356 | |
19befb2d LP |
2357 | if (slot) |
2358 | *slot = s; | |
992c052c | 2359 | |
19befb2d | 2360 | return 0; |
992c052c | 2361 | |
19befb2d LP |
2362 | fail: |
2363 | sd_bus_slot_unref(s); | |
992c052c | 2364 | bus_node_gc(bus, n); |
dfa92725 | 2365 | |
19befb2d | 2366 | return r; |
992c052c | 2367 | } |