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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); |
caa82984 | 54 | bus->current_userdata = u; |
f00c3121 | 55 | r = c->find(bus, path, c->interface, u, &u, error); |
caa82984 | 56 | bus->current_userdata = NULL; |
1b64f838 | 57 | bus->current_slot = sd_bus_slot_unref(s); |
19befb2d | 58 | |
f00c3121 LP |
59 | if (r < 0) |
60 | return r; | |
61 | if (sd_bus_error_is_set(error)) | |
5958d089 | 62 | return -sd_bus_error_get_errno(error); |
f00c3121 | 63 | if (r == 0) |
992c052c LP |
64 | return r; |
65 | } | |
66 | ||
67 | if (userdata) | |
68 | *userdata = u; | |
69 | ||
70 | return 1; | |
71 | } | |
72 | ||
73 | static void *vtable_property_convert_userdata(const sd_bus_vtable *p, void *u) { | |
74 | assert(p); | |
75 | ||
77a874a3 | 76 | return (uint8_t*) u + p->x.property.offset; |
992c052c LP |
77 | } |
78 | ||
79 | static int vtable_property_get_userdata( | |
80 | sd_bus *bus, | |
81 | const char *path, | |
82 | struct vtable_member *p, | |
f00c3121 LP |
83 | void **userdata, |
84 | sd_bus_error *error) { | |
992c052c LP |
85 | |
86 | void *u; | |
87 | int r; | |
88 | ||
89 | assert(bus); | |
90 | assert(path); | |
91 | assert(p); | |
92 | assert(userdata); | |
93 | ||
f00c3121 | 94 | r = node_vtable_get_userdata(bus, path, p->parent, &u, error); |
992c052c LP |
95 | if (r <= 0) |
96 | return r; | |
68313d3d LP |
97 | if (bus->nodes_modified) |
98 | return 0; | |
992c052c LP |
99 | |
100 | *userdata = vtable_property_convert_userdata(p->vtable, u); | |
101 | return 1; | |
102 | } | |
103 | ||
dfa92725 LP |
104 | static int add_enumerated_to_set( |
105 | sd_bus *bus, | |
106 | const char *prefix, | |
107 | struct node_enumerator *first, | |
f00c3121 LP |
108 | Set *s, |
109 | sd_bus_error *error) { | |
dfa92725 | 110 | |
992c052c LP |
111 | struct node_enumerator *c; |
112 | int r; | |
113 | ||
114 | assert(bus); | |
115 | assert(prefix); | |
116 | assert(s); | |
117 | ||
118 | LIST_FOREACH(enumerators, c, first) { | |
119 | char **children = NULL, **k; | |
1b64f838 | 120 | sd_bus_slot *slot; |
992c052c | 121 | |
68313d3d LP |
122 | if (bus->nodes_modified) |
123 | return 0; | |
124 | ||
1b64f838 LP |
125 | slot = container_of(c, sd_bus_slot, node_enumerator); |
126 | ||
127 | bus->current_slot = sd_bus_slot_ref(slot); | |
caa82984 | 128 | bus->current_userdata = slot->userdata; |
1b64f838 | 129 | r = c->callback(bus, prefix, slot->userdata, &children, error); |
caa82984 | 130 | bus->current_userdata = NULL; |
1b64f838 | 131 | bus->current_slot = sd_bus_slot_unref(slot); |
19befb2d | 132 | |
992c052c LP |
133 | if (r < 0) |
134 | return r; | |
f00c3121 | 135 | if (sd_bus_error_is_set(error)) |
5958d089 | 136 | return -sd_bus_error_get_errno(error); |
992c052c LP |
137 | |
138 | STRV_FOREACH(k, children) { | |
139 | if (r < 0) { | |
140 | free(*k); | |
141 | continue; | |
142 | } | |
143 | ||
5d66866d | 144 | if (!object_path_is_valid(*k)){ |
992c052c LP |
145 | free(*k); |
146 | r = -EINVAL; | |
147 | continue; | |
148 | } | |
149 | ||
5d66866d LP |
150 | if (!object_path_startswith(*k, prefix)) { |
151 | free(*k); | |
152 | continue; | |
153 | } | |
154 | ||
992c052c | 155 | r = set_consume(s, *k); |
52c7f2b2 LP |
156 | if (r == -EEXIST) |
157 | r = 0; | |
992c052c LP |
158 | } |
159 | ||
160 | free(children); | |
161 | if (r < 0) | |
162 | return r; | |
163 | } | |
164 | ||
165 | return 0; | |
166 | } | |
167 | ||
dfa92725 LP |
168 | static int add_subtree_to_set( |
169 | sd_bus *bus, | |
170 | const char *prefix, | |
171 | struct node *n, | |
f00c3121 LP |
172 | Set *s, |
173 | sd_bus_error *error) { | |
dfa92725 | 174 | |
992c052c LP |
175 | struct node *i; |
176 | int r; | |
177 | ||
178 | assert(bus); | |
179 | assert(prefix); | |
180 | assert(n); | |
181 | assert(s); | |
182 | ||
f00c3121 | 183 | r = add_enumerated_to_set(bus, prefix, n->enumerators, s, error); |
992c052c LP |
184 | if (r < 0) |
185 | return r; | |
68313d3d LP |
186 | if (bus->nodes_modified) |
187 | return 0; | |
992c052c LP |
188 | |
189 | LIST_FOREACH(siblings, i, n->child) { | |
190 | char *t; | |
191 | ||
5d66866d LP |
192 | if (!object_path_startswith(i->path, prefix)) |
193 | continue; | |
194 | ||
992c052c LP |
195 | t = strdup(i->path); |
196 | if (!t) | |
197 | return -ENOMEM; | |
198 | ||
199 | r = set_consume(s, t); | |
200 | if (r < 0 && r != -EEXIST) | |
201 | return r; | |
202 | ||
f00c3121 | 203 | r = add_subtree_to_set(bus, prefix, i, s, error); |
992c052c LP |
204 | if (r < 0) |
205 | return r; | |
68313d3d LP |
206 | if (bus->nodes_modified) |
207 | return 0; | |
992c052c LP |
208 | } |
209 | ||
210 | return 0; | |
211 | } | |
212 | ||
dfa92725 LP |
213 | static int get_child_nodes( |
214 | sd_bus *bus, | |
215 | const char *prefix, | |
216 | struct node *n, | |
f00c3121 LP |
217 | Set **_s, |
218 | sd_bus_error *error) { | |
dfa92725 | 219 | |
992c052c LP |
220 | Set *s = NULL; |
221 | int r; | |
222 | ||
223 | assert(bus); | |
dfa92725 | 224 | assert(prefix); |
992c052c LP |
225 | assert(n); |
226 | assert(_s); | |
227 | ||
228 | s = set_new(string_hash_func, string_compare_func); | |
229 | if (!s) | |
230 | return -ENOMEM; | |
231 | ||
f00c3121 | 232 | r = add_subtree_to_set(bus, prefix, n, s, error); |
992c052c LP |
233 | if (r < 0) { |
234 | set_free_free(s); | |
235 | return r; | |
236 | } | |
237 | ||
238 | *_s = s; | |
239 | return 0; | |
240 | } | |
241 | ||
242 | static int node_callbacks_run( | |
243 | sd_bus *bus, | |
244 | sd_bus_message *m, | |
245 | struct node_callback *first, | |
246 | bool require_fallback, | |
247 | bool *found_object) { | |
248 | ||
249 | struct node_callback *c; | |
250 | int r; | |
251 | ||
252 | assert(bus); | |
253 | assert(m); | |
254 | assert(found_object); | |
255 | ||
256 | LIST_FOREACH(callbacks, c, first) { | |
ebcf1f97 | 257 | _cleanup_bus_error_free_ sd_bus_error error_buffer = SD_BUS_ERROR_NULL; |
1b64f838 | 258 | sd_bus_slot *slot; |
ebcf1f97 | 259 | |
68313d3d LP |
260 | if (bus->nodes_modified) |
261 | return 0; | |
262 | ||
992c052c LP |
263 | if (require_fallback && !c->is_fallback) |
264 | continue; | |
265 | ||
266 | *found_object = true; | |
267 | ||
268 | if (c->last_iteration == bus->iteration_counter) | |
269 | continue; | |
270 | ||
68313d3d LP |
271 | c->last_iteration = bus->iteration_counter; |
272 | ||
992c052c LP |
273 | r = sd_bus_message_rewind(m, true); |
274 | if (r < 0) | |
275 | return r; | |
276 | ||
1b64f838 LP |
277 | slot = container_of(c, sd_bus_slot, node_callback); |
278 | ||
279 | bus->current_slot = sd_bus_slot_ref(slot); | |
caa82984 LP |
280 | bus->current_handler = c->callback; |
281 | bus->current_userdata = slot->userdata; | |
1b64f838 | 282 | r = c->callback(bus, m, slot->userdata, &error_buffer); |
caa82984 LP |
283 | bus->current_userdata = NULL; |
284 | bus->current_handler = NULL; | |
1b64f838 | 285 | bus->current_slot = sd_bus_slot_unref(slot); |
19befb2d | 286 | |
ebcf1f97 | 287 | r = bus_maybe_reply_error(m, r, &error_buffer); |
992c052c LP |
288 | if (r != 0) |
289 | return r; | |
290 | } | |
291 | ||
292 | return 0; | |
293 | } | |
294 | ||
adacb957 LP |
295 | #define CAPABILITY_SHIFT(x) (((x) >> __builtin_ctzll(_SD_BUS_VTABLE_CAPABILITY_MASK)) & 0xFFFF) |
296 | ||
297 | static int check_access(sd_bus *bus, sd_bus_message *m, struct vtable_member *c, sd_bus_error *error) { | |
298 | _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL; | |
299 | uint64_t cap; | |
adacb957 LP |
300 | int r; |
301 | ||
302 | assert(bus); | |
303 | assert(m); | |
304 | assert(c); | |
305 | ||
306 | /* If the entire bus is trusted let's grant access */ | |
307 | if (bus->trusted) | |
308 | return 0; | |
309 | ||
310 | /* If the member is marked UNPRIVILEGED let's grant access */ | |
311 | if (c->vtable->flags & SD_BUS_VTABLE_UNPRIVILEGED) | |
312 | return 0; | |
313 | ||
adacb957 LP |
314 | /* Check have the caller has the requested capability |
315 | * set. Note that the flags value contains the capability | |
316 | * number plus one, which we need to subtract here. We do this | |
317 | * so that we have 0 as special value for "default | |
318 | * capability". */ | |
319 | cap = CAPABILITY_SHIFT(c->vtable->flags); | |
320 | if (cap == 0) | |
321 | cap = CAPABILITY_SHIFT(c->parent->vtable[0].flags); | |
322 | if (cap == 0) | |
323 | cap = CAP_SYS_ADMIN; | |
324 | else | |
325 | cap --; | |
326 | ||
def9a7aa LP |
327 | r = sd_bus_query_sender_privilege(m, cap); |
328 | if (r < 0) | |
329 | return r; | |
adacb957 | 330 | if (r > 0) |
def9a7aa | 331 | return 0; |
adacb957 LP |
332 | |
333 | return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Access to %s.%s() not permitted.", c->interface, c->member); | |
334 | } | |
335 | ||
992c052c LP |
336 | static int method_callbacks_run( |
337 | sd_bus *bus, | |
338 | sd_bus_message *m, | |
339 | struct vtable_member *c, | |
340 | bool require_fallback, | |
341 | bool *found_object) { | |
342 | ||
f00c3121 | 343 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
992c052c LP |
344 | const char *signature; |
345 | void *u; | |
346 | int r; | |
347 | ||
348 | assert(bus); | |
349 | assert(m); | |
350 | assert(c); | |
351 | assert(found_object); | |
352 | ||
353 | if (require_fallback && !c->parent->is_fallback) | |
354 | return 0; | |
355 | ||
adacb957 LP |
356 | r = check_access(bus, m, c, &error); |
357 | if (r < 0) | |
358 | return bus_maybe_reply_error(m, r, &error); | |
359 | ||
f00c3121 | 360 | r = node_vtable_get_userdata(bus, m->path, c->parent, &u, &error); |
992c052c | 361 | if (r <= 0) |
f00c3121 | 362 | return bus_maybe_reply_error(m, r, &error); |
68313d3d LP |
363 | if (bus->nodes_modified) |
364 | return 0; | |
992c052c LP |
365 | |
366 | *found_object = true; | |
367 | ||
68313d3d LP |
368 | if (c->last_iteration == bus->iteration_counter) |
369 | return 0; | |
370 | ||
371 | c->last_iteration = bus->iteration_counter; | |
372 | ||
992c052c LP |
373 | r = sd_bus_message_rewind(m, true); |
374 | if (r < 0) | |
375 | return r; | |
376 | ||
40ca29a1 LP |
377 | signature = sd_bus_message_get_signature(m, true); |
378 | if (!signature) | |
379 | return -EINVAL; | |
992c052c | 380 | |
f00c3121 | 381 | if (!streq(strempty(c->vtable->x.method.signature), signature)) |
86b8d289 LP |
382 | return sd_bus_reply_method_errorf( |
383 | m, | |
384 | SD_BUS_ERROR_INVALID_ARGS, | |
385 | "Invalid arguments '%s' to call %s.%s(), expecting '%s'.", | |
386 | signature, c->interface, c->member, strempty(c->vtable->x.method.signature)); | |
992c052c | 387 | |
6717d473 LP |
388 | /* Keep track what the signature of the reply to this message |
389 | * should be, so that this can be enforced when sealing the | |
390 | * reply. */ | |
391 | m->enforced_reply_signature = strempty(c->vtable->x.method.result); | |
392 | ||
ebcf1f97 | 393 | if (c->vtable->x.method.handler) { |
1b64f838 LP |
394 | sd_bus_slot *slot; |
395 | ||
396 | slot = container_of(c->parent, sd_bus_slot, node_vtable); | |
19befb2d | 397 | |
1b64f838 | 398 | bus->current_slot = sd_bus_slot_ref(slot); |
caa82984 LP |
399 | bus->current_handler = c->vtable->x.method.handler; |
400 | bus->current_userdata = u; | |
f00c3121 | 401 | r = c->vtable->x.method.handler(bus, m, u, &error); |
caa82984 LP |
402 | bus->current_userdata = NULL; |
403 | bus->current_handler = NULL; | |
1b64f838 | 404 | bus->current_slot = sd_bus_slot_unref(slot); |
19befb2d | 405 | |
f00c3121 | 406 | return bus_maybe_reply_error(m, r, &error); |
ebcf1f97 | 407 | } |
992c052c LP |
408 | |
409 | /* If the method callback is NULL, make this a successful NOP */ | |
df2d202e | 410 | r = sd_bus_reply_method_return(m, NULL); |
992c052c LP |
411 | if (r < 0) |
412 | return r; | |
413 | ||
414 | return 1; | |
415 | } | |
416 | ||
417 | static int invoke_property_get( | |
418 | sd_bus *bus, | |
19befb2d | 419 | sd_bus_slot *slot, |
992c052c LP |
420 | const sd_bus_vtable *v, |
421 | const char *path, | |
422 | const char *interface, | |
423 | const char *property, | |
ebcf1f97 LP |
424 | sd_bus_message *reply, |
425 | void *userdata, | |
426 | sd_bus_error *error) { | |
992c052c | 427 | |
af8601fa | 428 | const void *p; |
f00c3121 | 429 | int r; |
992c052c LP |
430 | |
431 | assert(bus); | |
19befb2d | 432 | assert(slot); |
992c052c | 433 | assert(v); |
dfa92725 LP |
434 | assert(path); |
435 | assert(interface); | |
436 | assert(property); | |
ebcf1f97 | 437 | assert(reply); |
992c052c | 438 | |
f00c3121 | 439 | if (v->x.property.get) { |
19befb2d | 440 | |
1b64f838 | 441 | bus->current_slot = sd_bus_slot_ref(slot); |
caa82984 | 442 | bus->current_userdata = userdata; |
f00c3121 | 443 | r = v->x.property.get(bus, path, interface, property, reply, userdata, error); |
caa82984 | 444 | bus->current_userdata = NULL; |
1b64f838 | 445 | bus->current_slot = sd_bus_slot_unref(slot); |
19befb2d | 446 | |
f00c3121 LP |
447 | if (r < 0) |
448 | return r; | |
449 | if (sd_bus_error_is_set(error)) | |
5958d089 | 450 | return -sd_bus_error_get_errno(error); |
f00c3121 LP |
451 | return r; |
452 | } | |
992c052c LP |
453 | |
454 | /* Automatic handling if no callback is defined. */ | |
455 | ||
c13c7de3 | 456 | if (streq(v->x.property.signature, "as")) |
ebcf1f97 | 457 | return sd_bus_message_append_strv(reply, *(char***) userdata); |
c13c7de3 | 458 | |
77a874a3 LP |
459 | assert(signature_is_single(v->x.property.signature, false)); |
460 | assert(bus_type_is_basic(v->x.property.signature[0])); | |
992c052c | 461 | |
77a874a3 | 462 | switch (v->x.property.signature[0]) { |
992c052c LP |
463 | |
464 | case SD_BUS_TYPE_STRING: | |
28d6633a LP |
465 | case SD_BUS_TYPE_SIGNATURE: |
466 | p = strempty(*(char**) userdata); | |
af8601fa KS |
467 | break; |
468 | ||
992c052c | 469 | case SD_BUS_TYPE_OBJECT_PATH: |
992c052c | 470 | p = *(char**) userdata; |
28d6633a | 471 | assert(p); |
992c052c LP |
472 | break; |
473 | ||
474 | default: | |
475 | p = userdata; | |
476 | break; | |
477 | } | |
478 | ||
ebcf1f97 | 479 | return sd_bus_message_append_basic(reply, v->x.property.signature[0], p); |
992c052c LP |
480 | } |
481 | ||
482 | static int invoke_property_set( | |
483 | sd_bus *bus, | |
19befb2d | 484 | sd_bus_slot *slot, |
992c052c LP |
485 | const sd_bus_vtable *v, |
486 | const char *path, | |
487 | const char *interface, | |
488 | const char *property, | |
489 | sd_bus_message *value, | |
ebcf1f97 LP |
490 | void *userdata, |
491 | sd_bus_error *error) { | |
992c052c LP |
492 | |
493 | int r; | |
494 | ||
495 | assert(bus); | |
19befb2d | 496 | assert(slot); |
992c052c | 497 | assert(v); |
dfa92725 LP |
498 | assert(path); |
499 | assert(interface); | |
500 | assert(property); | |
501 | assert(value); | |
992c052c | 502 | |
f00c3121 | 503 | if (v->x.property.set) { |
19befb2d | 504 | |
1b64f838 | 505 | bus->current_slot = sd_bus_slot_ref(slot); |
caa82984 | 506 | bus->current_userdata = userdata; |
f00c3121 | 507 | r = v->x.property.set(bus, path, interface, property, value, userdata, error); |
caa82984 | 508 | bus->current_userdata = NULL; |
1b64f838 | 509 | bus->current_slot = sd_bus_slot_unref(slot); |
19befb2d | 510 | |
f00c3121 LP |
511 | if (r < 0) |
512 | return r; | |
513 | if (sd_bus_error_is_set(error)) | |
5958d089 | 514 | return -sd_bus_error_get_errno(error); |
f00c3121 LP |
515 | return r; |
516 | } | |
992c052c LP |
517 | |
518 | /* Automatic handling if no callback is defined. */ | |
519 | ||
77a874a3 LP |
520 | assert(signature_is_single(v->x.property.signature, false)); |
521 | assert(bus_type_is_basic(v->x.property.signature[0])); | |
992c052c | 522 | |
77a874a3 | 523 | switch (v->x.property.signature[0]) { |
992c052c LP |
524 | |
525 | case SD_BUS_TYPE_STRING: | |
526 | case SD_BUS_TYPE_OBJECT_PATH: | |
527 | case SD_BUS_TYPE_SIGNATURE: { | |
528 | const char *p; | |
529 | char *n; | |
530 | ||
77a874a3 | 531 | r = sd_bus_message_read_basic(value, v->x.property.signature[0], &p); |
992c052c LP |
532 | if (r < 0) |
533 | return r; | |
534 | ||
535 | n = strdup(p); | |
536 | if (!n) | |
537 | return -ENOMEM; | |
538 | ||
539 | free(*(char**) userdata); | |
540 | *(char**) userdata = n; | |
541 | ||
542 | break; | |
543 | } | |
544 | ||
545 | default: | |
77a874a3 | 546 | r = sd_bus_message_read_basic(value, v->x.property.signature[0], userdata); |
992c052c LP |
547 | if (r < 0) |
548 | return r; | |
549 | ||
550 | break; | |
551 | } | |
552 | ||
553 | return 1; | |
554 | } | |
555 | ||
556 | static int property_get_set_callbacks_run( | |
557 | sd_bus *bus, | |
558 | sd_bus_message *m, | |
559 | struct vtable_member *c, | |
560 | bool require_fallback, | |
561 | bool is_get, | |
562 | bool *found_object) { | |
563 | ||
992c052c | 564 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
ebcf1f97 | 565 | _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; |
19befb2d | 566 | sd_bus_slot *slot; |
c94d7fc3 | 567 | void *u = NULL; |
992c052c LP |
568 | int r; |
569 | ||
570 | assert(bus); | |
571 | assert(m); | |
dfa92725 | 572 | assert(c); |
992c052c LP |
573 | assert(found_object); |
574 | ||
575 | if (require_fallback && !c->parent->is_fallback) | |
576 | return 0; | |
577 | ||
f00c3121 | 578 | r = vtable_property_get_userdata(bus, m->path, c, &u, &error); |
992c052c | 579 | if (r <= 0) |
f00c3121 | 580 | return bus_maybe_reply_error(m, r, &error); |
68313d3d LP |
581 | if (bus->nodes_modified) |
582 | return 0; | |
992c052c | 583 | |
19befb2d LP |
584 | slot = container_of(c->parent, sd_bus_slot, node_vtable); |
585 | ||
992c052c LP |
586 | *found_object = true; |
587 | ||
df2d202e | 588 | r = sd_bus_message_new_method_return(m, &reply); |
992c052c LP |
589 | if (r < 0) |
590 | return r; | |
591 | ||
992c052c | 592 | if (is_get) { |
68313d3d LP |
593 | /* Note that we do not protect against reexecution |
594 | * here (using the last_iteration check, see below), | |
595 | * should the node tree have changed and we got called | |
596 | * again. We assume that property Get() calls are | |
597 | * ultimately without side-effects or if they aren't | |
598 | * then at least idempotent. */ | |
599 | ||
77a874a3 | 600 | r = sd_bus_message_open_container(reply, 'v', c->vtable->x.property.signature); |
992c052c LP |
601 | if (r < 0) |
602 | return r; | |
603 | ||
adacb957 LP |
604 | /* Note that we do not do an access check here. Read |
605 | * access to properties is always unrestricted, since | |
606 | * PropertiesChanged signals broadcast contents | |
607 | * anyway. */ | |
608 | ||
19befb2d | 609 | r = invoke_property_get(bus, slot, c->vtable, m->path, c->interface, c->member, reply, u, &error); |
992c052c | 610 | if (r < 0) |
f00c3121 | 611 | return bus_maybe_reply_error(m, r, &error); |
992c052c | 612 | |
68313d3d LP |
613 | if (bus->nodes_modified) |
614 | return 0; | |
615 | ||
992c052c LP |
616 | r = sd_bus_message_close_container(reply); |
617 | if (r < 0) | |
618 | return r; | |
619 | ||
620 | } else { | |
621 | if (c->vtable->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY) | |
ebcf1f97 | 622 | return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_PROPERTY_READ_ONLY, "Property '%s' is not writable.", c->member); |
68313d3d | 623 | |
ebcf1f97 LP |
624 | /* Avoid that we call the set routine more than once |
625 | * if the processing of this message got restarted | |
626 | * because the node tree changed. */ | |
627 | if (c->last_iteration == bus->iteration_counter) | |
628 | return 0; | |
992c052c | 629 | |
ebcf1f97 | 630 | c->last_iteration = bus->iteration_counter; |
992c052c | 631 | |
ebcf1f97 LP |
632 | r = sd_bus_message_enter_container(m, 'v', c->vtable->x.property.signature); |
633 | if (r < 0) | |
634 | return r; | |
992c052c | 635 | |
adacb957 LP |
636 | r = check_access(bus, m, c, &error); |
637 | if (r < 0) | |
638 | return bus_maybe_reply_error(m, r, &error); | |
639 | ||
19befb2d | 640 | r = invoke_property_set(bus, slot, c->vtable, m->path, c->interface, c->member, m, u, &error); |
ebcf1f97 | 641 | if (r < 0) |
f00c3121 | 642 | return bus_maybe_reply_error(m, r, &error); |
992c052c | 643 | |
68313d3d LP |
644 | if (bus->nodes_modified) |
645 | return 0; | |
646 | ||
992c052c LP |
647 | r = sd_bus_message_exit_container(m); |
648 | if (r < 0) | |
649 | return r; | |
650 | } | |
651 | ||
652 | r = sd_bus_send(bus, reply, NULL); | |
653 | if (r < 0) | |
654 | return r; | |
655 | ||
656 | return 1; | |
657 | } | |
658 | ||
a03e4337 LP |
659 | static int vtable_append_one_property( |
660 | sd_bus *bus, | |
661 | sd_bus_message *reply, | |
662 | const char *path, | |
663 | struct node_vtable *c, | |
664 | const sd_bus_vtable *v, | |
665 | void *userdata, | |
666 | sd_bus_error *error) { | |
667 | ||
19befb2d | 668 | sd_bus_slot *slot; |
a03e4337 LP |
669 | int r; |
670 | ||
671 | assert(bus); | |
672 | assert(reply); | |
673 | assert(path); | |
674 | assert(c); | |
675 | assert(v); | |
676 | ||
677 | r = sd_bus_message_open_container(reply, 'e', "sv"); | |
678 | if (r < 0) | |
679 | return r; | |
680 | ||
681 | r = sd_bus_message_append(reply, "s", v->x.property.member); | |
682 | if (r < 0) | |
683 | return r; | |
684 | ||
685 | r = sd_bus_message_open_container(reply, 'v', v->x.property.signature); | |
686 | if (r < 0) | |
687 | return r; | |
688 | ||
19befb2d LP |
689 | slot = container_of(c, sd_bus_slot, node_vtable); |
690 | ||
691 | r = invoke_property_get(bus, slot, v, path, c->interface, v->x.property.member, reply, vtable_property_convert_userdata(v, userdata), error); | |
a03e4337 LP |
692 | if (r < 0) |
693 | return r; | |
694 | if (bus->nodes_modified) | |
695 | return 0; | |
696 | ||
697 | r = sd_bus_message_close_container(reply); | |
698 | if (r < 0) | |
699 | return r; | |
700 | ||
701 | r = sd_bus_message_close_container(reply); | |
702 | if (r < 0) | |
703 | return r; | |
704 | ||
705 | return 0; | |
706 | } | |
707 | ||
992c052c LP |
708 | static int vtable_append_all_properties( |
709 | sd_bus *bus, | |
710 | sd_bus_message *reply, | |
711 | const char *path, | |
712 | struct node_vtable *c, | |
713 | void *userdata, | |
714 | sd_bus_error *error) { | |
715 | ||
716 | const sd_bus_vtable *v; | |
717 | int r; | |
718 | ||
719 | assert(bus); | |
720 | assert(reply); | |
dfa92725 | 721 | assert(path); |
992c052c LP |
722 | assert(c); |
723 | ||
6e8df5f0 LP |
724 | if (c->vtable[0].flags & SD_BUS_VTABLE_HIDDEN) |
725 | return 1; | |
726 | ||
992c052c LP |
727 | for (v = c->vtable+1; v->type != _SD_BUS_VTABLE_END; v++) { |
728 | if (v->type != _SD_BUS_VTABLE_PROPERTY && v->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY) | |
729 | continue; | |
730 | ||
6e8df5f0 LP |
731 | if (v->flags & SD_BUS_VTABLE_HIDDEN) |
732 | continue; | |
733 | ||
a03e4337 | 734 | r = vtable_append_one_property(bus, reply, path, c, v, userdata, error); |
f00c3121 LP |
735 | if (r < 0) |
736 | return r; | |
68313d3d LP |
737 | if (bus->nodes_modified) |
738 | return 0; | |
992c052c LP |
739 | } |
740 | ||
741 | return 1; | |
742 | } | |
743 | ||
744 | static int property_get_all_callbacks_run( | |
745 | sd_bus *bus, | |
746 | sd_bus_message *m, | |
747 | struct node_vtable *first, | |
748 | bool require_fallback, | |
749 | const char *iface, | |
750 | bool *found_object) { | |
751 | ||
752 | _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; | |
753 | struct node_vtable *c; | |
bd037038 | 754 | bool found_interface; |
992c052c LP |
755 | int r; |
756 | ||
757 | assert(bus); | |
758 | assert(m); | |
759 | assert(found_object); | |
760 | ||
df2d202e | 761 | r = sd_bus_message_new_method_return(m, &reply); |
992c052c LP |
762 | if (r < 0) |
763 | return r; | |
764 | ||
765 | r = sd_bus_message_open_container(reply, 'a', "{sv}"); | |
766 | if (r < 0) | |
767 | return r; | |
768 | ||
38911893 | 769 | found_interface = !iface || |
bd037038 LP |
770 | streq(iface, "org.freedesktop.DBus.Properties") || |
771 | streq(iface, "org.freedesktop.DBus.Peer") || | |
772 | streq(iface, "org.freedesktop.DBus.Introspectable"); | |
773 | ||
992c052c LP |
774 | LIST_FOREACH(vtables, c, first) { |
775 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; | |
776 | void *u; | |
777 | ||
778 | if (require_fallback && !c->is_fallback) | |
779 | continue; | |
780 | ||
f00c3121 | 781 | r = node_vtable_get_userdata(bus, m->path, c, &u, &error); |
992c052c | 782 | if (r < 0) |
f00c3121 | 783 | return bus_maybe_reply_error(m, r, &error); |
68313d3d LP |
784 | if (bus->nodes_modified) |
785 | return 0; | |
992c052c LP |
786 | if (r == 0) |
787 | continue; | |
788 | ||
789 | *found_object = true; | |
790 | ||
791 | if (iface && !streq(c->interface, iface)) | |
792 | continue; | |
793 | found_interface = true; | |
794 | ||
992c052c LP |
795 | r = vtable_append_all_properties(bus, reply, m->path, c, u, &error); |
796 | if (r < 0) | |
f00c3121 | 797 | return bus_maybe_reply_error(m, r, &error); |
68313d3d LP |
798 | if (bus->nodes_modified) |
799 | return 0; | |
992c052c LP |
800 | } |
801 | ||
802 | if (!found_interface) { | |
803 | r = sd_bus_reply_method_errorf( | |
df2d202e | 804 | m, |
40ca29a1 | 805 | SD_BUS_ERROR_UNKNOWN_INTERFACE, |
992c052c LP |
806 | "Unknown interface '%s'.", iface); |
807 | if (r < 0) | |
808 | return r; | |
809 | ||
810 | return 1; | |
811 | } | |
812 | ||
813 | r = sd_bus_message_close_container(reply); | |
814 | if (r < 0) | |
815 | return r; | |
816 | ||
817 | r = sd_bus_send(bus, reply, NULL); | |
818 | if (r < 0) | |
819 | return r; | |
820 | ||
821 | return 1; | |
822 | } | |
823 | ||
824 | static bool bus_node_with_object_manager(sd_bus *bus, struct node *n) { | |
825 | assert(bus); | |
dfa92725 | 826 | assert(n); |
992c052c | 827 | |
19befb2d | 828 | if (n->object_managers) |
992c052c LP |
829 | return true; |
830 | ||
831 | if (n->parent) | |
832 | return bus_node_with_object_manager(bus, n->parent); | |
833 | ||
834 | return false; | |
835 | } | |
836 | ||
dfa92725 LP |
837 | static bool bus_node_exists( |
838 | sd_bus *bus, | |
839 | struct node *n, | |
840 | const char *path, | |
841 | bool require_fallback) { | |
842 | ||
992c052c LP |
843 | struct node_vtable *c; |
844 | struct node_callback *k; | |
845 | ||
846 | assert(bus); | |
847 | assert(n); | |
dfa92725 | 848 | assert(path); |
992c052c LP |
849 | |
850 | /* Tests if there's anything attached directly to this node | |
851 | * for the specified path */ | |
852 | ||
853 | LIST_FOREACH(callbacks, k, n->callbacks) { | |
854 | if (require_fallback && !k->is_fallback) | |
855 | continue; | |
856 | ||
857 | return true; | |
858 | } | |
859 | ||
860 | LIST_FOREACH(vtables, c, n->vtables) { | |
f00c3121 | 861 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
992c052c LP |
862 | |
863 | if (require_fallback && !c->is_fallback) | |
864 | continue; | |
865 | ||
f00c3121 | 866 | if (node_vtable_get_userdata(bus, path, c, NULL, &error) > 0) |
992c052c | 867 | return true; |
68313d3d LP |
868 | if (bus->nodes_modified) |
869 | return false; | |
992c052c LP |
870 | } |
871 | ||
19befb2d | 872 | return !require_fallback && (n->enumerators || n->object_managers); |
992c052c LP |
873 | } |
874 | ||
875 | static int process_introspect( | |
876 | sd_bus *bus, | |
877 | sd_bus_message *m, | |
878 | struct node *n, | |
879 | bool require_fallback, | |
880 | bool *found_object) { | |
881 | ||
f00c3121 | 882 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
992c052c LP |
883 | _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; |
884 | _cleanup_set_free_free_ Set *s = NULL; | |
718db961 | 885 | const char *previous_interface = NULL; |
992c052c LP |
886 | struct introspect intro; |
887 | struct node_vtable *c; | |
888 | bool empty; | |
889 | int r; | |
890 | ||
891 | assert(bus); | |
892 | assert(m); | |
893 | assert(n); | |
894 | assert(found_object); | |
895 | ||
f00c3121 | 896 | r = get_child_nodes(bus, m->path, n, &s, &error); |
992c052c | 897 | if (r < 0) |
f00c3121 | 898 | return bus_maybe_reply_error(m, r, &error); |
68313d3d LP |
899 | if (bus->nodes_modified) |
900 | return 0; | |
992c052c | 901 | |
7fb411f0 | 902 | r = introspect_begin(&intro, bus->trusted); |
992c052c LP |
903 | if (r < 0) |
904 | return r; | |
905 | ||
906 | r = introspect_write_default_interfaces(&intro, bus_node_with_object_manager(bus, n)); | |
907 | if (r < 0) | |
908 | return r; | |
909 | ||
910 | empty = set_isempty(s); | |
911 | ||
912 | LIST_FOREACH(vtables, c, n->vtables) { | |
913 | if (require_fallback && !c->is_fallback) | |
914 | continue; | |
915 | ||
f00c3121 LP |
916 | r = node_vtable_get_userdata(bus, m->path, c, NULL, &error); |
917 | if (r < 0) { | |
918 | r = bus_maybe_reply_error(m, r, &error); | |
919 | goto finish; | |
920 | } | |
921 | if (bus->nodes_modified) { | |
922 | r = 0; | |
923 | goto finish; | |
924 | } | |
992c052c LP |
925 | if (r == 0) |
926 | continue; | |
927 | ||
928 | empty = false; | |
929 | ||
6e8df5f0 LP |
930 | if (c->vtable[0].flags & SD_BUS_VTABLE_HIDDEN) |
931 | continue; | |
932 | ||
718db961 LP |
933 | if (!streq_ptr(previous_interface, c->interface)) { |
934 | ||
935 | if (previous_interface) | |
936 | fputs(" </interface>\n", intro.f); | |
937 | ||
938 | fprintf(intro.f, " <interface name=\"%s\">\n", c->interface); | |
939 | } | |
940 | ||
941 | r = introspect_write_interface(&intro, c->vtable); | |
992c052c LP |
942 | if (r < 0) |
943 | goto finish; | |
718db961 LP |
944 | |
945 | previous_interface = c->interface; | |
992c052c LP |
946 | } |
947 | ||
718db961 LP |
948 | if (previous_interface) |
949 | fputs(" </interface>\n", intro.f); | |
950 | ||
992c052c LP |
951 | if (empty) { |
952 | /* Nothing?, let's see if we exist at all, and if not | |
953 | * refuse to do anything */ | |
954 | r = bus_node_exists(bus, n, m->path, require_fallback); | |
955 | if (r < 0) | |
956 | return r; | |
68313d3d LP |
957 | if (bus->nodes_modified) |
958 | return 0; | |
992c052c LP |
959 | if (r == 0) |
960 | goto finish; | |
961 | } | |
962 | ||
963 | *found_object = true; | |
964 | ||
965 | r = introspect_write_child_nodes(&intro, s, m->path); | |
966 | if (r < 0) | |
967 | goto finish; | |
968 | ||
969 | r = introspect_finish(&intro, bus, m, &reply); | |
970 | if (r < 0) | |
971 | goto finish; | |
972 | ||
973 | r = sd_bus_send(bus, reply, NULL); | |
974 | if (r < 0) | |
975 | goto finish; | |
976 | ||
977 | r = 1; | |
978 | ||
979 | finish: | |
980 | introspect_free(&intro); | |
981 | return r; | |
982 | } | |
983 | ||
992c052c LP |
984 | static int object_manager_serialize_path( |
985 | sd_bus *bus, | |
986 | sd_bus_message *reply, | |
987 | const char *prefix, | |
988 | const char *path, | |
989 | bool require_fallback, | |
990 | sd_bus_error *error) { | |
991 | ||
718db961 LP |
992 | const char *previous_interface = NULL; |
993 | bool found_something = false; | |
992c052c LP |
994 | struct node_vtable *i; |
995 | struct node *n; | |
996 | int r; | |
997 | ||
998 | assert(bus); | |
999 | assert(reply); | |
1000 | assert(prefix); | |
1001 | assert(path); | |
1002 | assert(error); | |
1003 | ||
1004 | n = hashmap_get(bus->nodes, prefix); | |
1005 | if (!n) | |
1006 | return 0; | |
1007 | ||
992c052c | 1008 | LIST_FOREACH(vtables, i, n->vtables) { |
92db139e | 1009 | void *u; |
992c052c LP |
1010 | |
1011 | if (require_fallback && !i->is_fallback) | |
1012 | continue; | |
1013 | ||
f00c3121 | 1014 | r = node_vtable_get_userdata(bus, path, i, &u, error); |
92db139e LP |
1015 | if (r < 0) |
1016 | return r; | |
68313d3d LP |
1017 | if (bus->nodes_modified) |
1018 | return 0; | |
92db139e LP |
1019 | if (r == 0) |
1020 | continue; | |
1021 | ||
1022 | if (!found_something) { | |
718db961 LP |
1023 | |
1024 | /* Open the object part */ | |
1025 | ||
92db139e LP |
1026 | r = sd_bus_message_open_container(reply, 'e', "oa{sa{sv}}"); |
1027 | if (r < 0) | |
1028 | return r; | |
1029 | ||
1030 | r = sd_bus_message_append(reply, "o", path); | |
1031 | if (r < 0) | |
1032 | return r; | |
1033 | ||
1034 | r = sd_bus_message_open_container(reply, 'a', "{sa{sv}}"); | |
1035 | if (r < 0) | |
1036 | return r; | |
1037 | ||
1038 | found_something = true; | |
1039 | } | |
1040 | ||
718db961 LP |
1041 | if (!streq_ptr(previous_interface, i->interface)) { |
1042 | ||
1043 | /* Maybe close the previous interface part */ | |
1044 | ||
1045 | if (previous_interface) { | |
1046 | r = sd_bus_message_close_container(reply); | |
1047 | if (r < 0) | |
1048 | return r; | |
1049 | ||
1050 | r = sd_bus_message_close_container(reply); | |
1051 | if (r < 0) | |
1052 | return r; | |
1053 | } | |
1054 | ||
1055 | /* Open the new interface part */ | |
1056 | ||
1057 | r = sd_bus_message_open_container(reply, 'e', "sa{sv}"); | |
1058 | if (r < 0) | |
1059 | return r; | |
1060 | ||
1061 | r = sd_bus_message_append(reply, "s", i->interface); | |
1062 | if (r < 0) | |
1063 | return r; | |
1064 | ||
1065 | r = sd_bus_message_open_container(reply, 'a', "{sv}"); | |
1066 | if (r < 0) | |
1067 | return r; | |
1068 | } | |
1069 | ||
1070 | r = vtable_append_all_properties(bus, reply, path, i, u, error); | |
992c052c LP |
1071 | if (r < 0) |
1072 | return r; | |
68313d3d LP |
1073 | if (bus->nodes_modified) |
1074 | return 0; | |
718db961 LP |
1075 | |
1076 | previous_interface = i->interface; | |
1077 | } | |
1078 | ||
1079 | if (previous_interface) { | |
1080 | r = sd_bus_message_close_container(reply); | |
1081 | if (r < 0) | |
1082 | return r; | |
1083 | ||
1084 | r = sd_bus_message_close_container(reply); | |
1085 | if (r < 0) | |
1086 | return r; | |
992c052c LP |
1087 | } |
1088 | ||
92db139e LP |
1089 | if (found_something) { |
1090 | r = sd_bus_message_close_container(reply); | |
1091 | if (r < 0) | |
1092 | return r; | |
992c052c | 1093 | |
92db139e LP |
1094 | r = sd_bus_message_close_container(reply); |
1095 | if (r < 0) | |
1096 | return r; | |
1097 | } | |
992c052c LP |
1098 | |
1099 | return 1; | |
1100 | } | |
1101 | ||
1102 | static int object_manager_serialize_path_and_fallbacks( | |
1103 | sd_bus *bus, | |
1104 | sd_bus_message *reply, | |
1105 | const char *path, | |
1106 | sd_bus_error *error) { | |
1107 | ||
92e189e5 | 1108 | char *prefix; |
992c052c LP |
1109 | int r; |
1110 | ||
1111 | assert(bus); | |
1112 | assert(reply); | |
1113 | assert(path); | |
1114 | assert(error); | |
1115 | ||
1116 | /* First, add all vtables registered for this path */ | |
1117 | r = object_manager_serialize_path(bus, reply, path, path, false, error); | |
1118 | if (r < 0) | |
1119 | return r; | |
68313d3d LP |
1120 | if (bus->nodes_modified) |
1121 | return 0; | |
992c052c LP |
1122 | |
1123 | /* Second, add fallback vtables registered for any of the prefixes */ | |
92e189e5 LP |
1124 | prefix = alloca(strlen(path) + 1); |
1125 | OBJECT_PATH_FOREACH_PREFIX(prefix, path) { | |
1126 | r = object_manager_serialize_path(bus, reply, prefix, path, true, error); | |
1127 | if (r < 0) | |
1128 | return r; | |
68313d3d LP |
1129 | if (bus->nodes_modified) |
1130 | return 0; | |
992c052c LP |
1131 | } |
1132 | ||
1133 | return 0; | |
1134 | } | |
1135 | ||
1136 | static int process_get_managed_objects( | |
1137 | sd_bus *bus, | |
1138 | sd_bus_message *m, | |
1139 | struct node *n, | |
1140 | bool require_fallback, | |
1141 | bool *found_object) { | |
1142 | ||
f00c3121 | 1143 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
992c052c LP |
1144 | _cleanup_bus_message_unref_ sd_bus_message *reply = NULL; |
1145 | _cleanup_set_free_free_ Set *s = NULL; | |
1146 | bool empty; | |
1147 | int r; | |
1148 | ||
1149 | assert(bus); | |
1150 | assert(m); | |
1151 | assert(n); | |
1152 | assert(found_object); | |
1153 | ||
1154 | if (!bus_node_with_object_manager(bus, n)) | |
1155 | return 0; | |
1156 | ||
f00c3121 | 1157 | r = get_child_nodes(bus, m->path, n, &s, &error); |
992c052c LP |
1158 | if (r < 0) |
1159 | return r; | |
68313d3d LP |
1160 | if (bus->nodes_modified) |
1161 | return 0; | |
992c052c | 1162 | |
df2d202e | 1163 | r = sd_bus_message_new_method_return(m, &reply); |
992c052c LP |
1164 | if (r < 0) |
1165 | return r; | |
1166 | ||
1167 | r = sd_bus_message_open_container(reply, 'a', "{oa{sa{sv}}}"); | |
1168 | if (r < 0) | |
1169 | return r; | |
1170 | ||
1171 | empty = set_isempty(s); | |
1172 | if (empty) { | |
1173 | struct node_vtable *c; | |
1174 | ||
1175 | /* Hmm, so we have no children? Then let's check | |
1176 | * whether we exist at all, i.e. whether at least one | |
1177 | * vtable exists. */ | |
1178 | ||
1179 | LIST_FOREACH(vtables, c, n->vtables) { | |
1180 | ||
1181 | if (require_fallback && !c->is_fallback) | |
1182 | continue; | |
1183 | ||
1184 | if (r < 0) | |
1185 | return r; | |
1186 | if (r == 0) | |
1187 | continue; | |
1188 | ||
1189 | empty = false; | |
1190 | break; | |
1191 | } | |
1192 | ||
1193 | if (empty) | |
1194 | return 0; | |
1195 | } else { | |
1196 | Iterator i; | |
1197 | char *path; | |
1198 | ||
1199 | SET_FOREACH(path, s, i) { | |
992c052c LP |
1200 | r = object_manager_serialize_path_and_fallbacks(bus, reply, path, &error); |
1201 | if (r < 0) | |
f00c3121 | 1202 | return r; |
68313d3d LP |
1203 | |
1204 | if (bus->nodes_modified) | |
1205 | return 0; | |
992c052c LP |
1206 | } |
1207 | } | |
1208 | ||
1209 | r = sd_bus_message_close_container(reply); | |
1210 | if (r < 0) | |
1211 | return r; | |
1212 | ||
1213 | r = sd_bus_send(bus, reply, NULL); | |
1214 | if (r < 0) | |
1215 | return r; | |
1216 | ||
1217 | return 1; | |
1218 | } | |
1219 | ||
1220 | static int object_find_and_run( | |
1221 | sd_bus *bus, | |
1222 | sd_bus_message *m, | |
1223 | const char *p, | |
1224 | bool require_fallback, | |
1225 | bool *found_object) { | |
1226 | ||
1227 | struct node *n; | |
1228 | struct vtable_member vtable_key, *v; | |
1229 | int r; | |
1230 | ||
1231 | assert(bus); | |
1232 | assert(m); | |
1233 | assert(p); | |
1234 | assert(found_object); | |
1235 | ||
1236 | n = hashmap_get(bus->nodes, p); | |
1237 | if (!n) | |
1238 | return 0; | |
1239 | ||
1240 | /* First, try object callbacks */ | |
1241 | r = node_callbacks_run(bus, m, n->callbacks, 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 | if (!m->interface || !m->member) | |
1248 | return 0; | |
1249 | ||
1250 | /* Then, look for a known method */ | |
1251 | vtable_key.path = (char*) p; | |
1252 | vtable_key.interface = m->interface; | |
1253 | vtable_key.member = m->member; | |
1254 | ||
1255 | v = hashmap_get(bus->vtable_methods, &vtable_key); | |
1256 | if (v) { | |
1257 | r = method_callbacks_run(bus, m, v, require_fallback, found_object); | |
1258 | if (r != 0) | |
1259 | return r; | |
68313d3d LP |
1260 | if (bus->nodes_modified) |
1261 | return 0; | |
992c052c LP |
1262 | } |
1263 | ||
1264 | /* Then, look for a known property */ | |
1265 | if (streq(m->interface, "org.freedesktop.DBus.Properties")) { | |
1266 | bool get = false; | |
1267 | ||
1268 | get = streq(m->member, "Get"); | |
1269 | ||
1270 | if (get || streq(m->member, "Set")) { | |
1271 | ||
1272 | r = sd_bus_message_rewind(m, true); | |
1273 | if (r < 0) | |
1274 | return r; | |
1275 | ||
1276 | vtable_key.path = (char*) p; | |
1277 | ||
1278 | r = sd_bus_message_read(m, "ss", &vtable_key.interface, &vtable_key.member); | |
1279 | if (r < 0) | |
0fc5ab90 | 1280 | return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected interface and member parameters"); |
992c052c LP |
1281 | |
1282 | v = hashmap_get(bus->vtable_properties, &vtable_key); | |
1283 | if (v) { | |
1284 | r = property_get_set_callbacks_run(bus, m, v, require_fallback, get, found_object); | |
1285 | if (r != 0) | |
1286 | return r; | |
1287 | } | |
1288 | ||
1289 | } else if (streq(m->member, "GetAll")) { | |
1290 | const char *iface; | |
1291 | ||
1292 | r = sd_bus_message_rewind(m, true); | |
1293 | if (r < 0) | |
1294 | return r; | |
1295 | ||
1296 | r = sd_bus_message_read(m, "s", &iface); | |
1297 | if (r < 0) | |
0fc5ab90 | 1298 | return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected interface parameter"); |
992c052c LP |
1299 | |
1300 | if (iface[0] == 0) | |
1301 | iface = NULL; | |
1302 | ||
1303 | r = property_get_all_callbacks_run(bus, m, n->vtables, require_fallback, iface, found_object); | |
1304 | if (r != 0) | |
1305 | return r; | |
1306 | } | |
1307 | ||
1308 | } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Introspectable", "Introspect")) { | |
1309 | ||
0fc5ab90 LP |
1310 | if (!isempty(sd_bus_message_get_signature(m, true))) |
1311 | return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected no parameters"); | |
1312 | ||
992c052c LP |
1313 | r = process_introspect(bus, m, n, require_fallback, found_object); |
1314 | if (r != 0) | |
1315 | return r; | |
1316 | ||
1317 | } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus.ObjectManager", "GetManagedObjects")) { | |
1318 | ||
0fc5ab90 LP |
1319 | if (!isempty(sd_bus_message_get_signature(m, true))) |
1320 | return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INVALID_ARGS, "Expected no parameters"); | |
1321 | ||
992c052c LP |
1322 | r = process_get_managed_objects(bus, m, n, require_fallback, found_object); |
1323 | if (r != 0) | |
1324 | return r; | |
1325 | } | |
1326 | ||
68313d3d LP |
1327 | if (bus->nodes_modified) |
1328 | return 0; | |
1329 | ||
992c052c LP |
1330 | if (!*found_object) { |
1331 | r = bus_node_exists(bus, n, m->path, require_fallback); | |
1332 | if (r < 0) | |
1333 | return r; | |
992c052c LP |
1334 | if (r > 0) |
1335 | *found_object = true; | |
1336 | } | |
1337 | ||
1338 | return 0; | |
1339 | } | |
1340 | ||
1341 | int bus_process_object(sd_bus *bus, sd_bus_message *m) { | |
1342 | int r; | |
1343 | size_t pl; | |
1344 | bool found_object = false; | |
1345 | ||
1346 | assert(bus); | |
1347 | assert(m); | |
1348 | ||
09365592 LP |
1349 | if (bus->hello_flags & KDBUS_HELLO_MONITOR) |
1350 | return 0; | |
1351 | ||
40ca29a1 | 1352 | if (m->header->type != SD_BUS_MESSAGE_METHOD_CALL) |
992c052c LP |
1353 | return 0; |
1354 | ||
992c052c LP |
1355 | if (hashmap_isempty(bus->nodes)) |
1356 | return 0; | |
1357 | ||
f820cf99 LP |
1358 | /* Never respond to broadcast messages */ |
1359 | if (bus->bus_client && !m->destination) | |
1360 | return 0; | |
1361 | ||
adacb957 LP |
1362 | assert(m->path); |
1363 | assert(m->member); | |
1364 | ||
992c052c LP |
1365 | pl = strlen(m->path); |
1366 | do { | |
92e189e5 | 1367 | char prefix[pl+1]; |
992c052c LP |
1368 | |
1369 | bus->nodes_modified = false; | |
1370 | ||
1371 | r = object_find_and_run(bus, m, m->path, false, &found_object); | |
1372 | if (r != 0) | |
1373 | return r; | |
1374 | ||
1375 | /* Look for fallback prefixes */ | |
92e189e5 | 1376 | OBJECT_PATH_FOREACH_PREFIX(prefix, m->path) { |
992c052c LP |
1377 | |
1378 | if (bus->nodes_modified) | |
1379 | break; | |
1380 | ||
92e189e5 | 1381 | r = object_find_and_run(bus, m, prefix, true, &found_object); |
992c052c LP |
1382 | if (r != 0) |
1383 | return r; | |
1384 | } | |
1385 | ||
1386 | } while (bus->nodes_modified); | |
1387 | ||
1388 | if (!found_object) | |
1389 | return 0; | |
1390 | ||
1391 | if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Properties", "Get") || | |
1392 | sd_bus_message_is_method_call(m, "org.freedesktop.DBus.Properties", "Set")) | |
1393 | r = sd_bus_reply_method_errorf( | |
df2d202e | 1394 | m, |
40ca29a1 | 1395 | SD_BUS_ERROR_UNKNOWN_PROPERTY, |
992c052c LP |
1396 | "Unknown property or interface."); |
1397 | else | |
1398 | r = sd_bus_reply_method_errorf( | |
df2d202e | 1399 | m, |
40ca29a1 | 1400 | SD_BUS_ERROR_UNKNOWN_METHOD, |
992c052c LP |
1401 | "Unknown method '%s' or interface '%s'.", m->member, m->interface); |
1402 | ||
1403 | if (r < 0) | |
1404 | return r; | |
1405 | ||
1406 | return 1; | |
1407 | } | |
1408 | ||
1409 | static struct node *bus_node_allocate(sd_bus *bus, const char *path) { | |
1410 | struct node *n, *parent; | |
1411 | const char *e; | |
2fd069b1 ZJS |
1412 | _cleanup_free_ char *s = NULL; |
1413 | char *p; | |
992c052c LP |
1414 | int r; |
1415 | ||
1416 | assert(bus); | |
1417 | assert(path); | |
1418 | assert(path[0] == '/'); | |
1419 | ||
1420 | n = hashmap_get(bus->nodes, path); | |
1421 | if (n) | |
1422 | return n; | |
1423 | ||
1424 | r = hashmap_ensure_allocated(&bus->nodes, string_hash_func, string_compare_func); | |
1425 | if (r < 0) | |
1426 | return NULL; | |
1427 | ||
1428 | s = strdup(path); | |
1429 | if (!s) | |
1430 | return NULL; | |
1431 | ||
1432 | if (streq(path, "/")) | |
1433 | parent = NULL; | |
1434 | else { | |
1435 | e = strrchr(path, '/'); | |
1436 | assert(e); | |
1437 | ||
1438 | p = strndupa(path, MAX(1, path - e)); | |
1439 | ||
1440 | parent = bus_node_allocate(bus, p); | |
2fd069b1 | 1441 | if (!parent) |
992c052c | 1442 | return NULL; |
992c052c LP |
1443 | } |
1444 | ||
1445 | n = new0(struct node, 1); | |
1446 | if (!n) | |
1447 | return NULL; | |
1448 | ||
1449 | n->parent = parent; | |
1450 | n->path = s; | |
2fd069b1 | 1451 | s = NULL; /* do not free */ |
992c052c | 1452 | |
8e050193 | 1453 | r = hashmap_put(bus->nodes, n->path, n); |
992c052c | 1454 | if (r < 0) { |
2fd069b1 | 1455 | free(n->path); |
992c052c LP |
1456 | free(n); |
1457 | return NULL; | |
1458 | } | |
1459 | ||
1460 | if (parent) | |
71fda00f | 1461 | LIST_PREPEND(siblings, parent->child, n); |
992c052c LP |
1462 | |
1463 | return n; | |
1464 | } | |
1465 | ||
19befb2d | 1466 | void bus_node_gc(sd_bus *b, struct node *n) { |
992c052c LP |
1467 | assert(b); |
1468 | ||
1469 | if (!n) | |
1470 | return; | |
1471 | ||
1472 | if (n->child || | |
1473 | n->callbacks || | |
1474 | n->vtables || | |
1475 | n->enumerators || | |
19befb2d | 1476 | n->object_managers) |
992c052c LP |
1477 | return; |
1478 | ||
1479 | assert(hashmap_remove(b->nodes, n->path) == n); | |
1480 | ||
1481 | if (n->parent) | |
71fda00f | 1482 | LIST_REMOVE(siblings, n->parent->child, n); |
992c052c LP |
1483 | |
1484 | free(n->path); | |
1485 | bus_node_gc(b, n->parent); | |
1486 | free(n); | |
1487 | } | |
1488 | ||
1489 | static int bus_add_object( | |
dfa92725 | 1490 | sd_bus *bus, |
19befb2d | 1491 | sd_bus_slot **slot, |
992c052c LP |
1492 | bool fallback, |
1493 | const char *path, | |
1494 | sd_bus_message_handler_t callback, | |
1495 | void *userdata) { | |
1496 | ||
19befb2d | 1497 | sd_bus_slot *s; |
992c052c LP |
1498 | struct node *n; |
1499 | int r; | |
1500 | ||
dfa92725 LP |
1501 | assert_return(bus, -EINVAL); |
1502 | assert_return(object_path_is_valid(path), -EINVAL); | |
1503 | assert_return(callback, -EINVAL); | |
1504 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
992c052c | 1505 | |
dfa92725 | 1506 | n = bus_node_allocate(bus, path); |
992c052c LP |
1507 | if (!n) |
1508 | return -ENOMEM; | |
1509 | ||
19befb2d LP |
1510 | s = bus_slot_allocate(bus, !slot, BUS_NODE_CALLBACK, sizeof(struct node_callback), userdata); |
1511 | if (!s) { | |
992c052c LP |
1512 | r = -ENOMEM; |
1513 | goto fail; | |
1514 | } | |
1515 | ||
19befb2d LP |
1516 | s->node_callback.callback = callback; |
1517 | s->node_callback.is_fallback = fallback; | |
992c052c | 1518 | |
19befb2d LP |
1519 | s->node_callback.node = n; |
1520 | LIST_PREPEND(callbacks, n->callbacks, &s->node_callback); | |
68313d3d LP |
1521 | bus->nodes_modified = true; |
1522 | ||
19befb2d LP |
1523 | if (slot) |
1524 | *slot = s; | |
1525 | ||
992c052c LP |
1526 | return 0; |
1527 | ||
1528 | fail: | |
19befb2d | 1529 | sd_bus_slot_unref(s); |
dfa92725 | 1530 | bus_node_gc(bus, n); |
19befb2d | 1531 | |
992c052c LP |
1532 | return r; |
1533 | } | |
1534 | ||
19befb2d | 1535 | _public_ int sd_bus_add_object( |
992c052c | 1536 | sd_bus *bus, |
19befb2d | 1537 | sd_bus_slot **slot, |
992c052c LP |
1538 | const char *path, |
1539 | sd_bus_message_handler_t callback, | |
1540 | void *userdata) { | |
1541 | ||
19befb2d | 1542 | return bus_add_object(bus, slot, false, path, callback, userdata); |
992c052c LP |
1543 | } |
1544 | ||
19befb2d LP |
1545 | _public_ int sd_bus_add_fallback( |
1546 | sd_bus *bus, | |
1547 | sd_bus_slot **slot, | |
1548 | const char *prefix, | |
1549 | sd_bus_message_handler_t callback, | |
1550 | void *userdata) { | |
992c052c | 1551 | |
19befb2d | 1552 | return bus_add_object(bus, slot, true, prefix, callback, userdata); |
992c052c LP |
1553 | } |
1554 | ||
9bf3b535 | 1555 | static unsigned long vtable_member_hash_func(const void *a, const uint8_t hash_key[HASH_KEY_SIZE]) { |
992c052c | 1556 | const struct vtable_member *m = a; |
9bf3b535 LP |
1557 | uint8_t hash_key2[HASH_KEY_SIZE]; |
1558 | unsigned long ret; | |
992c052c | 1559 | |
dfa92725 LP |
1560 | assert(m); |
1561 | ||
9bf3b535 LP |
1562 | ret = string_hash_func(m->path, hash_key); |
1563 | ||
1564 | /* Use a slightly different hash key for the interface */ | |
1565 | memcpy(hash_key2, hash_key, HASH_KEY_SIZE); | |
1566 | hash_key2[0]++; | |
1567 | ret ^= string_hash_func(m->interface, hash_key2); | |
1568 | ||
1569 | /* And an even different one for the member */ | |
1570 | hash_key2[0]++; | |
1571 | ret ^= string_hash_func(m->member, hash_key2); | |
1572 | ||
1573 | return ret; | |
992c052c LP |
1574 | } |
1575 | ||
1576 | static int vtable_member_compare_func(const void *a, const void *b) { | |
1577 | const struct vtable_member *x = a, *y = b; | |
1578 | int r; | |
1579 | ||
dfa92725 LP |
1580 | assert(x); |
1581 | assert(y); | |
1582 | ||
992c052c LP |
1583 | r = strcmp(x->path, y->path); |
1584 | if (r != 0) | |
1585 | return r; | |
1586 | ||
1587 | r = strcmp(x->interface, y->interface); | |
1588 | if (r != 0) | |
1589 | return r; | |
1590 | ||
1591 | return strcmp(x->member, y->member); | |
1592 | } | |
1593 | ||
1594 | static int add_object_vtable_internal( | |
1595 | sd_bus *bus, | |
19befb2d | 1596 | sd_bus_slot **slot, |
992c052c LP |
1597 | const char *path, |
1598 | const char *interface, | |
1599 | const sd_bus_vtable *vtable, | |
1600 | bool fallback, | |
1601 | sd_bus_object_find_t find, | |
1602 | void *userdata) { | |
1603 | ||
2915234d | 1604 | sd_bus_slot *s = NULL; |
19befb2d | 1605 | struct node_vtable *i, *existing = NULL; |
992c052c LP |
1606 | const sd_bus_vtable *v; |
1607 | struct node *n; | |
1608 | int r; | |
1609 | ||
dfa92725 LP |
1610 | assert_return(bus, -EINVAL); |
1611 | assert_return(object_path_is_valid(path), -EINVAL); | |
1612 | assert_return(interface_name_is_valid(interface), -EINVAL); | |
1613 | assert_return(vtable, -EINVAL); | |
1614 | assert_return(vtable[0].type == _SD_BUS_VTABLE_START, -EINVAL); | |
1615 | assert_return(vtable[0].x.start.element_size == sizeof(struct sd_bus_vtable), -EINVAL); | |
1616 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
718db961 LP |
1617 | assert_return(!streq(interface, "org.freedesktop.DBus.Properties") && |
1618 | !streq(interface, "org.freedesktop.DBus.Introspectable") && | |
1619 | !streq(interface, "org.freedesktop.DBus.Peer") && | |
1620 | !streq(interface, "org.freedesktop.DBus.ObjectManager"), -EINVAL); | |
992c052c LP |
1621 | |
1622 | r = hashmap_ensure_allocated(&bus->vtable_methods, vtable_member_hash_func, vtable_member_compare_func); | |
1623 | if (r < 0) | |
1624 | return r; | |
1625 | ||
1626 | r = hashmap_ensure_allocated(&bus->vtable_properties, vtable_member_hash_func, vtable_member_compare_func); | |
1627 | if (r < 0) | |
1628 | return r; | |
1629 | ||
1630 | n = bus_node_allocate(bus, path); | |
1631 | if (!n) | |
1632 | return -ENOMEM; | |
1633 | ||
1634 | LIST_FOREACH(vtables, i, n->vtables) { | |
992c052c LP |
1635 | if (i->is_fallback != fallback) { |
1636 | r = -EPROTOTYPE; | |
1637 | goto fail; | |
1638 | } | |
718db961 LP |
1639 | |
1640 | if (streq(i->interface, interface)) { | |
1641 | ||
1642 | if (i->vtable == vtable) { | |
1643 | r = -EEXIST; | |
1644 | goto fail; | |
1645 | } | |
1646 | ||
1647 | existing = i; | |
1648 | } | |
992c052c LP |
1649 | } |
1650 | ||
19befb2d LP |
1651 | s = bus_slot_allocate(bus, !slot, BUS_NODE_VTABLE, sizeof(struct node_vtable), userdata); |
1652 | if (!s) { | |
992c052c LP |
1653 | r = -ENOMEM; |
1654 | goto fail; | |
1655 | } | |
1656 | ||
19befb2d LP |
1657 | s->node_vtable.is_fallback = fallback; |
1658 | s->node_vtable.vtable = vtable; | |
1659 | s->node_vtable.find = find; | |
992c052c | 1660 | |
19befb2d LP |
1661 | s->node_vtable.interface = strdup(interface); |
1662 | if (!s->node_vtable.interface) { | |
992c052c LP |
1663 | r = -ENOMEM; |
1664 | goto fail; | |
1665 | } | |
1666 | ||
19befb2d | 1667 | for (v = s->node_vtable.vtable+1; v->type != _SD_BUS_VTABLE_END; v++) { |
992c052c LP |
1668 | |
1669 | switch (v->type) { | |
1670 | ||
1671 | case _SD_BUS_VTABLE_METHOD: { | |
1672 | struct vtable_member *m; | |
1673 | ||
77a874a3 LP |
1674 | if (!member_name_is_valid(v->x.method.member) || |
1675 | !signature_is_valid(strempty(v->x.method.signature), false) || | |
1676 | !signature_is_valid(strempty(v->x.method.result), false) || | |
1677 | !(v->x.method.handler || (isempty(v->x.method.signature) && isempty(v->x.method.result))) || | |
df98a87b | 1678 | v->flags & (SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE|SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION)) { |
992c052c LP |
1679 | r = -EINVAL; |
1680 | goto fail; | |
1681 | } | |
1682 | ||
1683 | m = new0(struct vtable_member, 1); | |
1684 | if (!m) { | |
1685 | r = -ENOMEM; | |
1686 | goto fail; | |
1687 | } | |
1688 | ||
19befb2d | 1689 | m->parent = &s->node_vtable; |
992c052c | 1690 | m->path = n->path; |
19befb2d | 1691 | m->interface = s->node_vtable.interface; |
77a874a3 | 1692 | m->member = v->x.method.member; |
992c052c LP |
1693 | m->vtable = v; |
1694 | ||
1695 | r = hashmap_put(bus->vtable_methods, m, m); | |
1696 | if (r < 0) { | |
1697 | free(m); | |
1698 | goto fail; | |
1699 | } | |
1700 | ||
1701 | break; | |
1702 | } | |
1703 | ||
1704 | case _SD_BUS_VTABLE_WRITABLE_PROPERTY: | |
1705 | ||
77a874a3 | 1706 | if (!(v->x.property.set || bus_type_is_basic(v->x.property.signature[0]))) { |
992c052c LP |
1707 | r = -EINVAL; |
1708 | goto fail; | |
1709 | } | |
1710 | ||
1711 | /* Fall through */ | |
1712 | ||
1713 | case _SD_BUS_VTABLE_PROPERTY: { | |
1714 | struct vtable_member *m; | |
1715 | ||
77a874a3 LP |
1716 | if (!member_name_is_valid(v->x.property.member) || |
1717 | !signature_is_single(v->x.property.signature, false) || | |
c13c7de3 | 1718 | !(v->x.property.get || bus_type_is_basic(v->x.property.signature[0]) || streq(v->x.property.signature, "as")) || |
992c052c | 1719 | v->flags & SD_BUS_VTABLE_METHOD_NO_REPLY || |
df98a87b | 1720 | (!!(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 | 1721 | (v->flags & SD_BUS_VTABLE_UNPRIVILEGED && v->type == _SD_BUS_VTABLE_PROPERTY)) { |
992c052c LP |
1722 | r = -EINVAL; |
1723 | goto fail; | |
1724 | } | |
1725 | ||
992c052c LP |
1726 | m = new0(struct vtable_member, 1); |
1727 | if (!m) { | |
1728 | r = -ENOMEM; | |
1729 | goto fail; | |
1730 | } | |
1731 | ||
19befb2d | 1732 | m->parent = &s->node_vtable; |
992c052c | 1733 | m->path = n->path; |
19befb2d | 1734 | m->interface = s->node_vtable.interface; |
77a874a3 | 1735 | m->member = v->x.property.member; |
992c052c LP |
1736 | m->vtable = v; |
1737 | ||
1738 | r = hashmap_put(bus->vtable_properties, m, m); | |
1739 | if (r < 0) { | |
1740 | free(m); | |
1741 | goto fail; | |
1742 | } | |
1743 | ||
1744 | break; | |
1745 | } | |
1746 | ||
1747 | case _SD_BUS_VTABLE_SIGNAL: | |
1748 | ||
77a874a3 | 1749 | if (!member_name_is_valid(v->x.signal.member) || |
adacb957 LP |
1750 | !signature_is_valid(strempty(v->x.signal.signature), false) || |
1751 | v->flags & SD_BUS_VTABLE_UNPRIVILEGED) { | |
992c052c LP |
1752 | r = -EINVAL; |
1753 | goto fail; | |
1754 | } | |
1755 | ||
1756 | break; | |
1757 | ||
1758 | default: | |
1759 | r = -EINVAL; | |
1760 | goto fail; | |
1761 | } | |
1762 | } | |
1763 | ||
19befb2d LP |
1764 | s->node_vtable.node = n; |
1765 | LIST_INSERT_AFTER(vtables, n->vtables, existing, &s->node_vtable); | |
68313d3d LP |
1766 | bus->nodes_modified = true; |
1767 | ||
19befb2d LP |
1768 | if (slot) |
1769 | *slot = s; | |
1770 | ||
992c052c LP |
1771 | return 0; |
1772 | ||
1773 | fail: | |
19befb2d | 1774 | sd_bus_slot_unref(s); |
dfa92725 LP |
1775 | bus_node_gc(bus, n); |
1776 | ||
19befb2d | 1777 | return r; |
992c052c LP |
1778 | } |
1779 | ||
d9f644e2 | 1780 | _public_ int sd_bus_add_object_vtable( |
992c052c | 1781 | sd_bus *bus, |
19befb2d | 1782 | sd_bus_slot **slot, |
992c052c LP |
1783 | const char *path, |
1784 | const char *interface, | |
1785 | const sd_bus_vtable *vtable, | |
1786 | void *userdata) { | |
1787 | ||
19befb2d | 1788 | return add_object_vtable_internal(bus, slot, path, interface, vtable, false, NULL, userdata); |
992c052c LP |
1789 | } |
1790 | ||
d9f644e2 | 1791 | _public_ int sd_bus_add_fallback_vtable( |
992c052c | 1792 | sd_bus *bus, |
19befb2d LP |
1793 | sd_bus_slot **slot, |
1794 | const char *prefix, | |
718db961 LP |
1795 | const char *interface, |
1796 | const sd_bus_vtable *vtable, | |
1797 | sd_bus_object_find_t find, | |
1798 | void *userdata) { | |
992c052c | 1799 | |
19befb2d | 1800 | return add_object_vtable_internal(bus, slot, prefix, interface, vtable, true, find, userdata); |
992c052c LP |
1801 | } |
1802 | ||
d9f644e2 | 1803 | _public_ int sd_bus_add_node_enumerator( |
992c052c | 1804 | sd_bus *bus, |
19befb2d | 1805 | sd_bus_slot **slot, |
992c052c LP |
1806 | const char *path, |
1807 | sd_bus_node_enumerator_t callback, | |
1808 | void *userdata) { | |
1809 | ||
19befb2d | 1810 | sd_bus_slot *s; |
992c052c LP |
1811 | struct node *n; |
1812 | int r; | |
1813 | ||
dfa92725 LP |
1814 | assert_return(bus, -EINVAL); |
1815 | assert_return(object_path_is_valid(path), -EINVAL); | |
1816 | assert_return(callback, -EINVAL); | |
1817 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
992c052c LP |
1818 | |
1819 | n = bus_node_allocate(bus, path); | |
1820 | if (!n) | |
1821 | return -ENOMEM; | |
1822 | ||
19befb2d LP |
1823 | s = bus_slot_allocate(bus, !slot, BUS_NODE_ENUMERATOR, sizeof(struct node_enumerator), userdata); |
1824 | if (!s) { | |
992c052c LP |
1825 | r = -ENOMEM; |
1826 | goto fail; | |
1827 | } | |
1828 | ||
19befb2d | 1829 | s->node_enumerator.callback = callback; |
68313d3d | 1830 | |
19befb2d LP |
1831 | s->node_enumerator.node = n; |
1832 | LIST_PREPEND(enumerators, n->enumerators, &s->node_enumerator); | |
68313d3d LP |
1833 | bus->nodes_modified = true; |
1834 | ||
19befb2d LP |
1835 | if (slot) |
1836 | *slot = s; | |
1837 | ||
992c052c LP |
1838 | return 0; |
1839 | ||
1840 | fail: | |
19befb2d | 1841 | sd_bus_slot_unref(s); |
992c052c LP |
1842 | bus_node_gc(bus, n); |
1843 | ||
19befb2d | 1844 | return r; |
992c052c LP |
1845 | } |
1846 | ||
1847 | static int emit_properties_changed_on_interface( | |
1848 | sd_bus *bus, | |
1849 | const char *prefix, | |
1850 | const char *path, | |
1851 | const char *interface, | |
1852 | bool require_fallback, | |
46525bfc | 1853 | bool *found_interface, |
992c052c LP |
1854 | char **names) { |
1855 | ||
f00c3121 | 1856 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; |
992c052c | 1857 | _cleanup_bus_message_unref_ sd_bus_message *m = NULL; |
718db961 LP |
1858 | bool has_invalidating = false, has_changing = false; |
1859 | struct vtable_member key = {}; | |
992c052c LP |
1860 | struct node_vtable *c; |
1861 | struct node *n; | |
1862 | char **property; | |
1863 | void *u = NULL; | |
1864 | int r; | |
1865 | ||
1866 | assert(bus); | |
dfa92725 | 1867 | assert(prefix); |
992c052c LP |
1868 | assert(path); |
1869 | assert(interface); | |
46525bfc | 1870 | assert(found_interface); |
992c052c LP |
1871 | |
1872 | n = hashmap_get(bus->nodes, prefix); | |
1873 | if (!n) | |
1874 | return 0; | |
1875 | ||
151b9b96 | 1876 | r = sd_bus_message_new_signal(bus, &m, path, "org.freedesktop.DBus.Properties", "PropertiesChanged"); |
992c052c LP |
1877 | if (r < 0) |
1878 | return r; | |
1879 | ||
1880 | r = sd_bus_message_append(m, "s", interface); | |
1881 | if (r < 0) | |
1882 | return r; | |
1883 | ||
1884 | r = sd_bus_message_open_container(m, 'a', "{sv}"); | |
1885 | if (r < 0) | |
1886 | return r; | |
1887 | ||
1888 | key.path = prefix; | |
1889 | key.interface = interface; | |
1890 | ||
718db961 LP |
1891 | LIST_FOREACH(vtables, c, n->vtables) { |
1892 | if (require_fallback && !c->is_fallback) | |
1893 | continue; | |
992c052c | 1894 | |
718db961 | 1895 | if (!streq(c->interface, interface)) |
992c052c | 1896 | continue; |
992c052c | 1897 | |
f00c3121 | 1898 | r = node_vtable_get_userdata(bus, path, c, &u, &error); |
992c052c LP |
1899 | if (r < 0) |
1900 | return r; | |
718db961 LP |
1901 | if (bus->nodes_modified) |
1902 | return 0; | |
1903 | if (r == 0) | |
1904 | continue; | |
992c052c | 1905 | |
46525bfc LP |
1906 | *found_interface = true; |
1907 | ||
a03e4337 LP |
1908 | if (names) { |
1909 | /* If the caller specified a list of | |
1910 | * properties we include exactly those in the | |
1911 | * PropertiesChanged message */ | |
992c052c | 1912 | |
a03e4337 LP |
1913 | STRV_FOREACH(property, names) { |
1914 | struct vtable_member *v; | |
992c052c | 1915 | |
a03e4337 | 1916 | assert_return(member_name_is_valid(*property), -EINVAL); |
718db961 | 1917 | |
a03e4337 LP |
1918 | key.member = *property; |
1919 | v = hashmap_get(bus->vtable_properties, &key); | |
1920 | if (!v) | |
1921 | return -ENOENT; | |
1922 | ||
1923 | /* If there are two vtables for the same | |
1924 | * interface, let's handle this property when | |
1925 | * we come to that vtable. */ | |
1926 | if (c != v->parent) | |
1927 | continue; | |
992c052c | 1928 | |
a03e4337 LP |
1929 | assert_return(v->vtable->flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE || |
1930 | v->vtable->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION, -EDOM); | |
992c052c | 1931 | |
a03e4337 LP |
1932 | assert_return(!(v->vtable->flags & SD_BUS_VTABLE_HIDDEN), -EDOM); |
1933 | ||
1934 | if (v->vtable->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION) { | |
1935 | has_invalidating = true; | |
1936 | continue; | |
1937 | } | |
1938 | ||
1939 | has_changing = true; | |
1940 | ||
1941 | r = vtable_append_one_property(bus, m, m->path, c, v->vtable, u, &error); | |
1942 | if (r < 0) | |
1943 | return r; | |
1944 | if (bus->nodes_modified) | |
1945 | return 0; | |
718db961 | 1946 | } |
a03e4337 LP |
1947 | } else { |
1948 | const sd_bus_vtable *v; | |
718db961 | 1949 | |
a03e4337 LP |
1950 | /* If the caller specified no properties list |
1951 | * we include all properties that are marked | |
1952 | * as changing in the message. */ | |
718db961 | 1953 | |
a03e4337 LP |
1954 | for (v = c->vtable+1; v->type != _SD_BUS_VTABLE_END; v++) { |
1955 | if (v->type != _SD_BUS_VTABLE_PROPERTY && v->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY) | |
1956 | continue; | |
718db961 | 1957 | |
a03e4337 LP |
1958 | if (v->flags & SD_BUS_VTABLE_HIDDEN) |
1959 | continue; | |
718db961 | 1960 | |
a03e4337 LP |
1961 | if (v->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION) { |
1962 | has_invalidating = true; | |
1963 | continue; | |
1964 | } | |
718db961 | 1965 | |
a03e4337 LP |
1966 | if (!(v->flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE)) |
1967 | continue; | |
718db961 | 1968 | |
a03e4337 | 1969 | has_changing = true; |
718db961 | 1970 | |
a03e4337 LP |
1971 | r = vtable_append_one_property(bus, m, m->path, c, v, u, &error); |
1972 | if (r < 0) | |
1973 | return r; | |
1974 | if (bus->nodes_modified) | |
1975 | return 0; | |
1976 | } | |
718db961 | 1977 | } |
992c052c LP |
1978 | } |
1979 | ||
718db961 LP |
1980 | if (!has_invalidating && !has_changing) |
1981 | return 0; | |
1982 | ||
992c052c LP |
1983 | r = sd_bus_message_close_container(m); |
1984 | if (r < 0) | |
1985 | return r; | |
1986 | ||
1987 | r = sd_bus_message_open_container(m, 'a', "s"); | |
1988 | if (r < 0) | |
1989 | return r; | |
1990 | ||
1991 | if (has_invalidating) { | |
718db961 LP |
1992 | LIST_FOREACH(vtables, c, n->vtables) { |
1993 | if (require_fallback && !c->is_fallback) | |
1994 | continue; | |
992c052c | 1995 | |
718db961 | 1996 | if (!streq(c->interface, interface)) |
992c052c LP |
1997 | continue; |
1998 | ||
f00c3121 | 1999 | r = node_vtable_get_userdata(bus, path, c, &u, &error); |
992c052c LP |
2000 | if (r < 0) |
2001 | return r; | |
718db961 LP |
2002 | if (bus->nodes_modified) |
2003 | return 0; | |
2004 | if (r == 0) | |
2005 | continue; | |
2006 | ||
a03e4337 LP |
2007 | if (names) { |
2008 | STRV_FOREACH(property, names) { | |
2009 | struct vtable_member *v; | |
718db961 | 2010 | |
a03e4337 LP |
2011 | key.member = *property; |
2012 | assert_se(v = hashmap_get(bus->vtable_properties, &key)); | |
2013 | assert(c == v->parent); | |
718db961 | 2014 | |
a03e4337 LP |
2015 | if (!(v->vtable->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION)) |
2016 | continue; | |
718db961 | 2017 | |
a03e4337 LP |
2018 | r = sd_bus_message_append(m, "s", *property); |
2019 | if (r < 0) | |
2020 | return r; | |
2021 | } | |
2022 | } else { | |
2023 | const sd_bus_vtable *v; | |
2024 | ||
2025 | for (v = c->vtable+1; v->type != _SD_BUS_VTABLE_END; v++) { | |
2026 | if (v->type != _SD_BUS_VTABLE_PROPERTY && v->type != _SD_BUS_VTABLE_WRITABLE_PROPERTY) | |
2027 | continue; | |
2028 | ||
2029 | if (v->flags & SD_BUS_VTABLE_HIDDEN) | |
2030 | continue; | |
2031 | ||
2032 | if (!(v->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION)) | |
2033 | continue; | |
2034 | ||
2035 | r = sd_bus_message_append(m, "s", v->x.property.member); | |
2036 | if (r < 0) | |
2037 | return r; | |
2038 | } | |
718db961 | 2039 | } |
992c052c LP |
2040 | } |
2041 | } | |
2042 | ||
2043 | r = sd_bus_message_close_container(m); | |
2044 | if (r < 0) | |
2045 | return r; | |
2046 | ||
2047 | r = sd_bus_send(bus, m, NULL); | |
2048 | if (r < 0) | |
2049 | return r; | |
2050 | ||
2051 | return 1; | |
2052 | } | |
2053 | ||
d9f644e2 | 2054 | _public_ int sd_bus_emit_properties_changed_strv( |
dfa92725 LP |
2055 | sd_bus *bus, |
2056 | const char *path, | |
2057 | const char *interface, | |
2058 | char **names) { | |
2059 | ||
8ce2afd6 | 2060 | BUS_DONT_DESTROY(bus); |
46525bfc | 2061 | bool found_interface = false; |
92e189e5 | 2062 | char *prefix; |
992c052c LP |
2063 | int r; |
2064 | ||
dfa92725 LP |
2065 | assert_return(bus, -EINVAL); |
2066 | assert_return(object_path_is_valid(path), -EINVAL); | |
2067 | assert_return(interface_name_is_valid(interface), -EINVAL); | |
dfa92725 LP |
2068 | assert_return(!bus_pid_changed(bus), -ECHILD); |
2069 | ||
a3d59cd1 LP |
2070 | if (!BUS_IS_OPEN(bus->state)) |
2071 | return -ENOTCONN; | |
a03e4337 LP |
2072 | |
2073 | /* A non-NULL but empty names list means nothing needs to be | |
2074 | generated. A NULL list OTOH indicates that all properties | |
2075 | that are set to EMITS_CHANGE or EMITS_INVALIDATION shall be | |
2076 | included in the PropertiesChanged message. */ | |
2077 | if (names && names[0] == NULL) | |
dfa92725 | 2078 | return 0; |
992c052c | 2079 | |
68313d3d LP |
2080 | do { |
2081 | bus->nodes_modified = false; | |
992c052c | 2082 | |
46525bfc | 2083 | r = emit_properties_changed_on_interface(bus, path, path, interface, false, &found_interface, names); |
92e189e5 LP |
2084 | if (r != 0) |
2085 | return r; | |
68313d3d LP |
2086 | if (bus->nodes_modified) |
2087 | continue; | |
2088 | ||
2089 | prefix = alloca(strlen(path) + 1); | |
2090 | OBJECT_PATH_FOREACH_PREFIX(prefix, path) { | |
46525bfc | 2091 | r = emit_properties_changed_on_interface(bus, prefix, path, interface, true, &found_interface, names); |
68313d3d LP |
2092 | if (r != 0) |
2093 | return r; | |
2094 | if (bus->nodes_modified) | |
2095 | break; | |
2096 | } | |
2097 | ||
2098 | } while (bus->nodes_modified); | |
992c052c | 2099 | |
46525bfc | 2100 | return found_interface ? 0 : -ENOENT; |
992c052c LP |
2101 | } |
2102 | ||
d9f644e2 | 2103 | _public_ int sd_bus_emit_properties_changed( |
dfa92725 LP |
2104 | sd_bus *bus, |
2105 | const char *path, | |
2106 | const char *interface, | |
2107 | const char *name, ...) { | |
2108 | ||
250a918d | 2109 | char **names; |
992c052c | 2110 | |
dfa92725 LP |
2111 | assert_return(bus, -EINVAL); |
2112 | assert_return(object_path_is_valid(path), -EINVAL); | |
2113 | assert_return(interface_name_is_valid(interface), -EINVAL); | |
dfa92725 LP |
2114 | assert_return(!bus_pid_changed(bus), -ECHILD); |
2115 | ||
a3d59cd1 LP |
2116 | if (!BUS_IS_OPEN(bus->state)) |
2117 | return -ENOTCONN; | |
2118 | ||
dfa92725 LP |
2119 | if (!name) |
2120 | return 0; | |
2121 | ||
250a918d | 2122 | names = strv_from_stdarg_alloca(name); |
992c052c LP |
2123 | |
2124 | return sd_bus_emit_properties_changed_strv(bus, path, interface, names); | |
2125 | } | |
2126 | ||
4be39163 LP |
2127 | static int interfaces_added_append_one_prefix( |
2128 | sd_bus *bus, | |
2129 | sd_bus_message *m, | |
2130 | const char *prefix, | |
2131 | const char *path, | |
2132 | const char *interface, | |
2133 | bool require_fallback) { | |
2134 | ||
2135 | _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; | |
718db961 | 2136 | bool found_interface = false; |
4be39163 LP |
2137 | struct node_vtable *c; |
2138 | struct node *n; | |
2139 | void *u = NULL; | |
2140 | int r; | |
2141 | ||
2142 | assert(bus); | |
2143 | assert(m); | |
2144 | assert(prefix); | |
2145 | assert(path); | |
2146 | assert(interface); | |
2147 | ||
2148 | n = hashmap_get(bus->nodes, prefix); | |
2149 | if (!n) | |
2150 | return 0; | |
2151 | ||
2152 | LIST_FOREACH(vtables, c, n->vtables) { | |
2153 | if (require_fallback && !c->is_fallback) | |
2154 | continue; | |
2155 | ||
718db961 LP |
2156 | if (!streq(c->interface, interface)) |
2157 | continue; | |
4be39163 | 2158 | |
f00c3121 | 2159 | r = node_vtable_get_userdata(bus, path, c, &u, &error); |
718db961 LP |
2160 | if (r < 0) |
2161 | return r; | |
2162 | if (bus->nodes_modified) | |
2163 | return 0; | |
2164 | if (r == 0) | |
2165 | continue; | |
4be39163 | 2166 | |
718db961 LP |
2167 | if (!found_interface) { |
2168 | r = sd_bus_message_append_basic(m, 's', interface); | |
2169 | if (r < 0) | |
2170 | return r; | |
4be39163 | 2171 | |
718db961 LP |
2172 | r = sd_bus_message_open_container(m, 'a', "{sv}"); |
2173 | if (r < 0) | |
2174 | return r; | |
4be39163 | 2175 | |
718db961 LP |
2176 | found_interface = true; |
2177 | } | |
4be39163 | 2178 | |
718db961 LP |
2179 | r = vtable_append_all_properties(bus, m, path, c, u, &error); |
2180 | if (r < 0) | |
2181 | return r; | |
2182 | if (bus->nodes_modified) | |
2183 | return 0; | |
2184 | } | |
4be39163 | 2185 | |
718db961 LP |
2186 | if (found_interface) { |
2187 | r = sd_bus_message_close_container(m); | |
2188 | if (r < 0) | |
2189 | return r; | |
2190 | } | |
4be39163 | 2191 | |
718db961 | 2192 | return found_interface; |
4be39163 LP |
2193 | } |
2194 | ||
2195 | static int interfaces_added_append_one( | |
2196 | sd_bus *bus, | |
2197 | sd_bus_message *m, | |
2198 | const char *path, | |
2199 | const char *interface) { | |
2200 | ||
2201 | char *prefix; | |
2202 | int r; | |
2203 | ||
2204 | assert(bus); | |
2205 | assert(m); | |
2206 | assert(path); | |
2207 | assert(interface); | |
2208 | ||
2209 | r = interfaces_added_append_one_prefix(bus, m, path, path, interface, false); | |
2210 | if (r != 0) | |
2211 | return r; | |
68313d3d LP |
2212 | if (bus->nodes_modified) |
2213 | return 0; | |
4be39163 LP |
2214 | |
2215 | prefix = alloca(strlen(path) + 1); | |
2216 | OBJECT_PATH_FOREACH_PREFIX(prefix, path) { | |
2217 | r = interfaces_added_append_one_prefix(bus, m, prefix, path, interface, true); | |
2218 | if (r != 0) | |
2219 | return r; | |
68313d3d LP |
2220 | if (bus->nodes_modified) |
2221 | return 0; | |
4be39163 LP |
2222 | } |
2223 | ||
2224 | return -ENOENT; | |
992c052c LP |
2225 | } |
2226 | ||
d9f644e2 | 2227 | _public_ int sd_bus_emit_interfaces_added_strv(sd_bus *bus, const char *path, char **interfaces) { |
8ce2afd6 LP |
2228 | BUS_DONT_DESTROY(bus); |
2229 | ||
4be39163 LP |
2230 | _cleanup_bus_message_unref_ sd_bus_message *m = NULL; |
2231 | char **i; | |
2232 | int r; | |
2233 | ||
2234 | assert_return(bus, -EINVAL); | |
2235 | assert_return(object_path_is_valid(path), -EINVAL); | |
4be39163 LP |
2236 | assert_return(!bus_pid_changed(bus), -ECHILD); |
2237 | ||
a3d59cd1 LP |
2238 | if (!BUS_IS_OPEN(bus->state)) |
2239 | return -ENOTCONN; | |
2240 | ||
4be39163 LP |
2241 | if (strv_isempty(interfaces)) |
2242 | return 0; | |
2243 | ||
68313d3d LP |
2244 | do { |
2245 | bus->nodes_modified = false; | |
1b02f301 | 2246 | m = sd_bus_message_unref(m); |
4be39163 | 2247 | |
151b9b96 | 2248 | r = sd_bus_message_new_signal(bus, &m, path, "org.freedesktop.DBus.ObjectManager", "InterfacesAdded"); |
68313d3d LP |
2249 | if (r < 0) |
2250 | return r; | |
4be39163 | 2251 | |
68313d3d | 2252 | r = sd_bus_message_append_basic(m, 'o', path); |
4be39163 LP |
2253 | if (r < 0) |
2254 | return r; | |
2255 | ||
68313d3d | 2256 | r = sd_bus_message_open_container(m, 'a', "{sa{sv}}"); |
4be39163 LP |
2257 | if (r < 0) |
2258 | return r; | |
2259 | ||
68313d3d LP |
2260 | STRV_FOREACH(i, interfaces) { |
2261 | assert_return(interface_name_is_valid(*i), -EINVAL); | |
2262 | ||
2263 | r = sd_bus_message_open_container(m, 'e', "sa{sv}"); | |
2264 | if (r < 0) | |
2265 | return r; | |
2266 | ||
2267 | r = interfaces_added_append_one(bus, m, path, *i); | |
2268 | if (r < 0) | |
2269 | return r; | |
2270 | ||
2271 | if (bus->nodes_modified) | |
2272 | break; | |
2273 | ||
2274 | r = sd_bus_message_close_container(m); | |
2275 | if (r < 0) | |
2276 | return r; | |
2277 | } | |
2278 | ||
2279 | if (bus->nodes_modified) | |
2280 | continue; | |
2281 | ||
4be39163 LP |
2282 | r = sd_bus_message_close_container(m); |
2283 | if (r < 0) | |
2284 | return r; | |
4be39163 | 2285 | |
68313d3d | 2286 | } while (bus->nodes_modified); |
4be39163 LP |
2287 | |
2288 | return sd_bus_send(bus, m, NULL); | |
2289 | } | |
2290 | ||
d9f644e2 | 2291 | _public_ int sd_bus_emit_interfaces_added(sd_bus *bus, const char *path, const char *interface, ...) { |
250a918d | 2292 | char **interfaces; |
4be39163 LP |
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 | ||
250a918d | 2301 | interfaces = strv_from_stdarg_alloca(interface); |
4be39163 LP |
2302 | |
2303 | return sd_bus_emit_interfaces_added_strv(bus, path, interfaces); | |
2304 | } | |
2305 | ||
d9f644e2 | 2306 | _public_ int sd_bus_emit_interfaces_removed_strv(sd_bus *bus, const char *path, char **interfaces) { |
4be39163 LP |
2307 | _cleanup_bus_message_unref_ sd_bus_message *m = NULL; |
2308 | int r; | |
2309 | ||
2310 | assert_return(bus, -EINVAL); | |
2311 | assert_return(object_path_is_valid(path), -EINVAL); | |
4be39163 LP |
2312 | assert_return(!bus_pid_changed(bus), -ECHILD); |
2313 | ||
a3d59cd1 LP |
2314 | if (!BUS_IS_OPEN(bus->state)) |
2315 | return -ENOTCONN; | |
2316 | ||
4be39163 LP |
2317 | if (strv_isempty(interfaces)) |
2318 | return 0; | |
2319 | ||
151b9b96 | 2320 | r = sd_bus_message_new_signal(bus, &m, path, "org.freedesktop.DBus.ObjectManager", "InterfacesRemoved"); |
4be39163 LP |
2321 | if (r < 0) |
2322 | return r; | |
2323 | ||
2324 | r = sd_bus_message_append_basic(m, 'o', path); | |
2325 | if (r < 0) | |
2326 | return r; | |
2327 | ||
2328 | r = sd_bus_message_append_strv(m, interfaces); | |
2329 | if (r < 0) | |
2330 | return r; | |
2331 | ||
2332 | return sd_bus_send(bus, m, NULL); | |
2333 | } | |
2334 | ||
d9f644e2 | 2335 | _public_ int sd_bus_emit_interfaces_removed(sd_bus *bus, const char *path, const char *interface, ...) { |
250a918d | 2336 | char **interfaces; |
4be39163 LP |
2337 | |
2338 | assert_return(bus, -EINVAL); | |
2339 | assert_return(object_path_is_valid(path), -EINVAL); | |
4be39163 LP |
2340 | assert_return(!bus_pid_changed(bus), -ECHILD); |
2341 | ||
a3d59cd1 LP |
2342 | if (!BUS_IS_OPEN(bus->state)) |
2343 | return -ENOTCONN; | |
2344 | ||
250a918d | 2345 | interfaces = strv_from_stdarg_alloca(interface); |
4be39163 LP |
2346 | |
2347 | return sd_bus_emit_interfaces_removed_strv(bus, path, interfaces); | |
992c052c LP |
2348 | } |
2349 | ||
19befb2d LP |
2350 | _public_ int sd_bus_add_object_manager(sd_bus *bus, sd_bus_slot **slot, const char *path) { |
2351 | sd_bus_slot *s; | |
992c052c | 2352 | struct node *n; |
19befb2d | 2353 | int r; |
992c052c | 2354 | |
dfa92725 LP |
2355 | assert_return(bus, -EINVAL); |
2356 | assert_return(object_path_is_valid(path), -EINVAL); | |
2357 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
992c052c LP |
2358 | |
2359 | n = bus_node_allocate(bus, path); | |
2360 | if (!n) | |
2361 | return -ENOMEM; | |
2362 | ||
19befb2d LP |
2363 | s = bus_slot_allocate(bus, !slot, BUS_NODE_OBJECT_MANAGER, sizeof(struct node_object_manager), NULL); |
2364 | if (!s) { | |
2365 | r = -ENOMEM; | |
2366 | goto fail; | |
2367 | } | |
992c052c | 2368 | |
19befb2d LP |
2369 | s->node_object_manager.node = n; |
2370 | LIST_PREPEND(object_managers, n->object_managers, &s->node_object_manager); | |
2371 | bus->nodes_modified = true; | |
992c052c | 2372 | |
19befb2d LP |
2373 | if (slot) |
2374 | *slot = s; | |
992c052c | 2375 | |
19befb2d | 2376 | return 0; |
992c052c | 2377 | |
19befb2d LP |
2378 | fail: |
2379 | sd_bus_slot_unref(s); | |
992c052c | 2380 | bus_node_gc(bus, n); |
dfa92725 | 2381 | |
19befb2d | 2382 | return r; |
992c052c | 2383 | } |