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40ca29a1 LP |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2013 Lennart Poettering | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU Lesser General Public License as published by | |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public License | |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
18 | ***/ | |
19 | ||
a8fbdf54 TA |
20 | #include <errno.h> |
21 | #include <fcntl.h> | |
22 | #include <inttypes.h> | |
23 | #include <stdio.h> | |
24 | #include <stdlib.h> | |
25 | #include <string.h> | |
26 | #include <sys/ioctl.h> | |
27 | #include <sys/resource.h> | |
0c842e0a | 28 | #include <sys/socket.h> |
a8fbdf54 | 29 | #include <unistd.h> |
0c842e0a | 30 | |
a8fbdf54 | 31 | #include "sd-bus-protocol.h" |
4f5dd394 | 32 | #include "sd-bus.h" |
ebd011d9 LP |
33 | #include "sd-daemon.h" |
34 | #include "sd-event.h" | |
a8fbdf54 | 35 | #include "sd-id128.h" |
d53d9474 | 36 | |
b5efdb8a | 37 | #include "alloc-util.h" |
d53d9474 LP |
38 | #include "bus-internal.h" |
39 | #include "bus-label.h" | |
40 | #include "bus-message.h" | |
3ffd4af2 | 41 | #include "bus-util.h" |
40ca29a1 | 42 | #include "def.h" |
4f5dd394 | 43 | #include "escape.h" |
3ffd4af2 | 44 | #include "fd-util.h" |
2bba9a57 | 45 | #include "missing.h" |
6bedfcbb | 46 | #include "parse-util.h" |
ee104e11 | 47 | #include "proc-cmdline.h" |
78f22b97 | 48 | #include "rlimit-util.h" |
15a5e950 | 49 | #include "stdio-util.h" |
d53d9474 | 50 | #include "strv.h" |
ee104e11 | 51 | #include "user-util.h" |
40ca29a1 | 52 | |
19070062 | 53 | static int name_owner_change_callback(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { |
40ca29a1 LP |
54 | sd_event *e = userdata; |
55 | ||
40ca29a1 LP |
56 | assert(m); |
57 | assert(e); | |
58 | ||
19070062 | 59 | sd_bus_close(sd_bus_message_get_bus(m)); |
6203e07a | 60 | sd_event_exit(e, 0); |
b27adf35 | 61 | |
40ca29a1 LP |
62 | return 1; |
63 | } | |
64 | ||
6203e07a | 65 | int bus_async_unregister_and_exit(sd_event *e, sd_bus *bus, const char *name) { |
40ca29a1 | 66 | _cleanup_free_ char *match = NULL; |
11846aa7 | 67 | const char *unique; |
40ca29a1 LP |
68 | int r; |
69 | ||
70 | assert(e); | |
71 | assert(bus); | |
72 | assert(name); | |
73 | ||
6203e07a LP |
74 | /* We unregister the name here and then wait for the |
75 | * NameOwnerChanged signal for this event to arrive before we | |
76 | * quit. We do this in order to make sure that any queued | |
77 | * requests are still processed before we really exit. */ | |
78 | ||
11846aa7 | 79 | r = sd_bus_get_unique_name(bus, &unique); |
40ca29a1 LP |
80 | if (r < 0) |
81 | return r; | |
82 | ||
11846aa7 LP |
83 | r = asprintf(&match, |
84 | "sender='org.freedesktop.DBus'," | |
85 | "type='signal'," | |
86 | "interface='org.freedesktop.DBus'," | |
87 | "member='NameOwnerChanged'," | |
88 | "path='/org/freedesktop/DBus'," | |
89 | "arg0='%s'," | |
90 | "arg1='%s'," | |
91 | "arg2=''", name, unique); | |
92 | if (r < 0) | |
93 | return -ENOMEM; | |
94 | ||
19befb2d | 95 | r = sd_bus_add_match(bus, NULL, match, name_owner_change_callback, e); |
40ca29a1 LP |
96 | if (r < 0) |
97 | return r; | |
98 | ||
99 | r = sd_bus_release_name(bus, name); | |
100 | if (r < 0) | |
101 | return r; | |
102 | ||
40ca29a1 LP |
103 | return 0; |
104 | } | |
105 | ||
37224a5f LP |
106 | int bus_event_loop_with_idle( |
107 | sd_event *e, | |
108 | sd_bus *bus, | |
109 | const char *name, | |
110 | usec_t timeout, | |
111 | check_idle_t check_idle, | |
112 | void *userdata) { | |
40ca29a1 | 113 | bool exiting = false; |
6203e07a | 114 | int r, code; |
40ca29a1 LP |
115 | |
116 | assert(e); | |
117 | assert(bus); | |
118 | assert(name); | |
119 | ||
120 | for (;;) { | |
37224a5f LP |
121 | bool idle; |
122 | ||
40ca29a1 LP |
123 | r = sd_event_get_state(e); |
124 | if (r < 0) | |
125 | return r; | |
40ca29a1 LP |
126 | if (r == SD_EVENT_FINISHED) |
127 | break; | |
128 | ||
37224a5f LP |
129 | if (check_idle) |
130 | idle = check_idle(userdata); | |
131 | else | |
132 | idle = true; | |
133 | ||
134 | r = sd_event_run(e, exiting || !idle ? (uint64_t) -1 : timeout); | |
40ca29a1 LP |
135 | if (r < 0) |
136 | return r; | |
137 | ||
a8ba6cd1 | 138 | if (r == 0 && !exiting && idle) { |
b27adf35 LP |
139 | |
140 | r = sd_bus_try_close(bus); | |
141 | if (r == -EBUSY) | |
142 | continue; | |
143 | ||
430e21c2 LP |
144 | /* Fallback for dbus1 connections: we |
145 | * unregister the name and wait for the | |
146 | * response to come through for it */ | |
15411c0c | 147 | if (r == -EOPNOTSUPP) { |
430e21c2 LP |
148 | |
149 | /* Inform the service manager that we | |
150 | * are going down, so that it will | |
151 | * queue all further start requests, | |
152 | * instead of assuming we are already | |
153 | * running. */ | |
154 | sd_notify(false, "STOPPING=1"); | |
b27adf35 LP |
155 | |
156 | r = bus_async_unregister_and_exit(e, bus, name); | |
157 | if (r < 0) | |
158 | return r; | |
159 | ||
160 | exiting = true; | |
161 | continue; | |
162 | } | |
163 | ||
40ca29a1 LP |
164 | if (r < 0) |
165 | return r; | |
166 | ||
b27adf35 LP |
167 | sd_event_exit(e, 0); |
168 | break; | |
40ca29a1 LP |
169 | } |
170 | } | |
171 | ||
6203e07a LP |
172 | r = sd_event_get_exit_code(e, &code); |
173 | if (r < 0) | |
174 | return r; | |
175 | ||
176 | return code; | |
40ca29a1 LP |
177 | } |
178 | ||
5fd38859 | 179 | int bus_name_has_owner(sd_bus *c, const char *name, sd_bus_error *error) { |
4afd3348 | 180 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *rep = NULL; |
5fd38859 DH |
181 | int r, has_owner = 0; |
182 | ||
183 | assert(c); | |
184 | assert(name); | |
185 | ||
186 | r = sd_bus_call_method(c, | |
187 | "org.freedesktop.DBus", | |
188 | "/org/freedesktop/dbus", | |
189 | "org.freedesktop.DBus", | |
190 | "NameHasOwner", | |
191 | error, | |
192 | &rep, | |
193 | "s", | |
194 | name); | |
195 | if (r < 0) | |
196 | return r; | |
197 | ||
198 | r = sd_bus_message_read_basic(rep, 'b', &has_owner); | |
199 | if (r < 0) | |
200 | return sd_bus_error_set_errno(error, r); | |
201 | ||
202 | return has_owner; | |
203 | } | |
204 | ||
c529695e | 205 | static int check_good_user(sd_bus_message *m, uid_t good_user) { |
4afd3348 | 206 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; |
c529695e LP |
207 | uid_t sender_uid; |
208 | int r; | |
209 | ||
210 | assert(m); | |
211 | ||
212 | if (good_user == UID_INVALID) | |
213 | return 0; | |
214 | ||
215 | r = sd_bus_query_sender_creds(m, SD_BUS_CREDS_EUID, &creds); | |
216 | if (r < 0) | |
217 | return r; | |
218 | ||
0f514420 LP |
219 | /* Don't trust augmented credentials for authorization */ |
220 | assert_return((sd_bus_creds_get_augmented_mask(creds) & SD_BUS_CREDS_EUID) == 0, -EPERM); | |
221 | ||
c529695e LP |
222 | r = sd_bus_creds_get_euid(creds, &sender_uid); |
223 | if (r < 0) | |
224 | return r; | |
225 | ||
226 | return sender_uid == good_user; | |
227 | } | |
228 | ||
ceb24229 | 229 | int bus_test_polkit( |
f3885791 | 230 | sd_bus_message *call, |
def9a7aa | 231 | int capability, |
40ca29a1 | 232 | const char *action, |
403ed0e5 | 233 | const char **details, |
c529695e | 234 | uid_t good_user, |
40ca29a1 LP |
235 | bool *_challenge, |
236 | sd_bus_error *e) { | |
237 | ||
40ca29a1 LP |
238 | int r; |
239 | ||
f3885791 | 240 | assert(call); |
40ca29a1 LP |
241 | assert(action); |
242 | ||
ceb24229 LP |
243 | /* Tests non-interactively! */ |
244 | ||
c529695e LP |
245 | r = check_good_user(call, good_user); |
246 | if (r != 0) | |
247 | return r; | |
248 | ||
f3885791 | 249 | r = sd_bus_query_sender_privilege(call, capability); |
5b12334d LP |
250 | if (r < 0) |
251 | return r; | |
f3885791 | 252 | else if (r > 0) |
40ca29a1 | 253 | return 1; |
40ca29a1 LP |
254 | #ifdef ENABLE_POLKIT |
255 | else { | |
4afd3348 LP |
256 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *request = NULL; |
257 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; | |
ceb24229 | 258 | int authorized = false, challenge = false; |
403ed0e5 | 259 | const char *sender, **k, **v; |
5b12334d | 260 | |
f3885791 | 261 | sender = sd_bus_message_get_sender(call); |
5b12334d LP |
262 | if (!sender) |
263 | return -EBADMSG; | |
40ca29a1 | 264 | |
403ed0e5 | 265 | r = sd_bus_message_new_method_call( |
f3885791 | 266 | call->bus, |
403ed0e5 | 267 | &request, |
40ca29a1 LP |
268 | "org.freedesktop.PolicyKit1", |
269 | "/org/freedesktop/PolicyKit1/Authority", | |
270 | "org.freedesktop.PolicyKit1.Authority", | |
403ed0e5 MC |
271 | "CheckAuthorization"); |
272 | if (r < 0) | |
273 | return r; | |
274 | ||
275 | r = sd_bus_message_append( | |
276 | request, | |
277 | "(sa{sv})s", | |
40ca29a1 | 278 | "system-bus-name", 1, "name", "s", sender, |
403ed0e5 MC |
279 | action); |
280 | if (r < 0) | |
281 | return r; | |
282 | ||
283 | r = sd_bus_message_open_container(request, 'a', "{ss}"); | |
284 | if (r < 0) | |
285 | return r; | |
40ca29a1 | 286 | |
403ed0e5 MC |
287 | STRV_FOREACH_PAIR(k, v, details) { |
288 | r = sd_bus_message_append(request, "{ss}", *k, *v); | |
289 | if (r < 0) | |
290 | return r; | |
291 | } | |
292 | ||
293 | r = sd_bus_message_close_container(request); | |
294 | if (r < 0) | |
295 | return r; | |
296 | ||
297 | r = sd_bus_message_append(request, "us", 0, NULL); | |
298 | if (r < 0) | |
299 | return r; | |
300 | ||
301 | r = sd_bus_call(call->bus, request, 0, e, &reply); | |
40ca29a1 LP |
302 | if (r < 0) { |
303 | /* Treat no PK available as access denied */ | |
304 | if (sd_bus_error_has_name(e, SD_BUS_ERROR_SERVICE_UNKNOWN)) { | |
305 | sd_bus_error_free(e); | |
306 | return -EACCES; | |
307 | } | |
308 | ||
309 | return r; | |
310 | } | |
311 | ||
313333b4 | 312 | r = sd_bus_message_enter_container(reply, 'r', "bba{ss}"); |
2b49a470 TA |
313 | if (r < 0) |
314 | return r; | |
315 | ||
316 | r = sd_bus_message_read(reply, "bb", &authorized, &challenge); | |
317 | if (r < 0) | |
318 | return r; | |
40ca29a1 LP |
319 | |
320 | if (authorized) | |
321 | return 1; | |
322 | ||
323 | if (_challenge) { | |
324 | *_challenge = challenge; | |
325 | return 0; | |
326 | } | |
327 | } | |
328 | #endif | |
329 | ||
330 | return -EACCES; | |
331 | } | |
332 | ||
333 | #ifdef ENABLE_POLKIT | |
334 | ||
335 | typedef struct AsyncPolkitQuery { | |
336 | sd_bus_message *request, *reply; | |
337 | sd_bus_message_handler_t callback; | |
338 | void *userdata; | |
19befb2d | 339 | sd_bus_slot *slot; |
ebcf1f97 | 340 | Hashmap *registry; |
40ca29a1 LP |
341 | } AsyncPolkitQuery; |
342 | ||
19befb2d | 343 | static void async_polkit_query_free(AsyncPolkitQuery *q) { |
ebcf1f97 LP |
344 | |
345 | if (!q) | |
346 | return; | |
347 | ||
19befb2d | 348 | sd_bus_slot_unref(q->slot); |
ebcf1f97 LP |
349 | |
350 | if (q->registry && q->request) | |
351 | hashmap_remove(q->registry, q->request); | |
352 | ||
353 | sd_bus_message_unref(q->request); | |
354 | sd_bus_message_unref(q->reply); | |
355 | ||
356 | free(q); | |
357 | } | |
358 | ||
19070062 | 359 | static int async_polkit_callback(sd_bus_message *reply, void *userdata, sd_bus_error *error) { |
4afd3348 | 360 | _cleanup_(sd_bus_error_free) sd_bus_error error_buffer = SD_BUS_ERROR_NULL; |
ebcf1f97 | 361 | AsyncPolkitQuery *q = userdata; |
40ca29a1 LP |
362 | int r; |
363 | ||
40ca29a1 LP |
364 | assert(reply); |
365 | assert(q); | |
366 | ||
19befb2d | 367 | q->slot = sd_bus_slot_unref(q->slot); |
40ca29a1 | 368 | q->reply = sd_bus_message_ref(reply); |
40ca29a1 | 369 | |
ebcf1f97 LP |
370 | r = sd_bus_message_rewind(q->request, true); |
371 | if (r < 0) { | |
372 | r = sd_bus_reply_method_errno(q->request, r, NULL); | |
373 | goto finish; | |
374 | } | |
40ca29a1 | 375 | |
19070062 | 376 | r = q->callback(q->request, q->userdata, &error_buffer); |
ebcf1f97 | 377 | r = bus_maybe_reply_error(q->request, r, &error_buffer); |
40ca29a1 | 378 | |
ebcf1f97 | 379 | finish: |
19befb2d LP |
380 | async_polkit_query_free(q); |
381 | ||
ebcf1f97 | 382 | return r; |
40ca29a1 LP |
383 | } |
384 | ||
385 | #endif | |
386 | ||
387 | int bus_verify_polkit_async( | |
f3885791 | 388 | sd_bus_message *call, |
def9a7aa | 389 | int capability, |
40ca29a1 | 390 | const char *action, |
403ed0e5 | 391 | const char **details, |
40ca29a1 | 392 | bool interactive, |
c529695e | 393 | uid_t good_user, |
f3885791 LP |
394 | Hashmap **registry, |
395 | sd_bus_error *error) { | |
40ca29a1 LP |
396 | |
397 | #ifdef ENABLE_POLKIT | |
4afd3348 | 398 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *pk = NULL; |
40ca29a1 | 399 | AsyncPolkitQuery *q; |
403ed0e5 | 400 | const char *sender, **k, **v; |
f3885791 LP |
401 | sd_bus_message_handler_t callback; |
402 | void *userdata; | |
b911eb15 | 403 | int c; |
5b12334d | 404 | #endif |
40ca29a1 LP |
405 | int r; |
406 | ||
f3885791 | 407 | assert(call); |
40ca29a1 | 408 | assert(action); |
f3885791 | 409 | assert(registry); |
40ca29a1 | 410 | |
c529695e LP |
411 | r = check_good_user(call, good_user); |
412 | if (r != 0) | |
413 | return r; | |
414 | ||
40ca29a1 | 415 | #ifdef ENABLE_POLKIT |
f3885791 | 416 | q = hashmap_get(*registry, call); |
40ca29a1 | 417 | if (q) { |
102d8f81 | 418 | int authorized, challenge; |
40ca29a1 LP |
419 | |
420 | /* This is the second invocation of this function, and | |
421 | * there's already a response from polkit, let's | |
422 | * process it */ | |
423 | assert(q->reply); | |
424 | ||
425 | if (sd_bus_message_is_method_error(q->reply, NULL)) { | |
426 | const sd_bus_error *e; | |
427 | ||
ebcf1f97 | 428 | /* Copy error from polkit reply */ |
40ca29a1 LP |
429 | e = sd_bus_message_get_error(q->reply); |
430 | sd_bus_error_copy(error, e); | |
40ca29a1 | 431 | |
ebcf1f97 LP |
432 | /* Treat no PK available as access denied */ |
433 | if (sd_bus_error_has_name(e, SD_BUS_ERROR_SERVICE_UNKNOWN)) | |
434 | return -EACCES; | |
435 | ||
5958d089 | 436 | return -sd_bus_error_get_errno(e); |
40ca29a1 LP |
437 | } |
438 | ||
439 | r = sd_bus_message_enter_container(q->reply, 'r', "bba{ss}"); | |
440 | if (r >= 0) | |
441 | r = sd_bus_message_read(q->reply, "bb", &authorized, &challenge); | |
442 | ||
40ca29a1 LP |
443 | if (r < 0) |
444 | return r; | |
445 | ||
446 | if (authorized) | |
447 | return 1; | |
448 | ||
f2288cc6 LP |
449 | if (challenge) |
450 | return sd_bus_error_set(error, SD_BUS_ERROR_INTERACTIVE_AUTHORIZATION_REQUIRED, "Interactive authentication required."); | |
451 | ||
40ca29a1 LP |
452 | return -EACCES; |
453 | } | |
454 | #endif | |
455 | ||
f3885791 | 456 | r = sd_bus_query_sender_privilege(call, capability); |
5b12334d LP |
457 | if (r < 0) |
458 | return r; | |
f3885791 | 459 | else if (r > 0) |
40ca29a1 | 460 | return 1; |
5b12334d | 461 | |
40ca29a1 | 462 | #ifdef ENABLE_POLKIT |
f3885791 LP |
463 | if (sd_bus_get_current_message(call->bus) != call) |
464 | return -EINVAL; | |
465 | ||
466 | callback = sd_bus_get_current_handler(call->bus); | |
467 | if (!callback) | |
468 | return -EINVAL; | |
469 | ||
470 | userdata = sd_bus_get_current_userdata(call->bus); | |
471 | ||
472 | sender = sd_bus_message_get_sender(call); | |
5b12334d LP |
473 | if (!sender) |
474 | return -EBADMSG; | |
40ca29a1 | 475 | |
b911eb15 LP |
476 | c = sd_bus_message_get_allow_interactive_authorization(call); |
477 | if (c < 0) | |
478 | return c; | |
479 | if (c > 0) | |
480 | interactive = true; | |
481 | ||
d5099efc | 482 | r = hashmap_ensure_allocated(registry, NULL); |
40ca29a1 LP |
483 | if (r < 0) |
484 | return r; | |
485 | ||
486 | r = sd_bus_message_new_method_call( | |
f3885791 | 487 | call->bus, |
151b9b96 | 488 | &pk, |
40ca29a1 LP |
489 | "org.freedesktop.PolicyKit1", |
490 | "/org/freedesktop/PolicyKit1/Authority", | |
491 | "org.freedesktop.PolicyKit1.Authority", | |
151b9b96 | 492 | "CheckAuthorization"); |
40ca29a1 LP |
493 | if (r < 0) |
494 | return r; | |
495 | ||
496 | r = sd_bus_message_append( | |
497 | pk, | |
403ed0e5 | 498 | "(sa{sv})s", |
40ca29a1 | 499 | "system-bus-name", 1, "name", "s", sender, |
403ed0e5 MC |
500 | action); |
501 | if (r < 0) | |
502 | return r; | |
503 | ||
504 | r = sd_bus_message_open_container(pk, 'a', "{ss}"); | |
505 | if (r < 0) | |
506 | return r; | |
507 | ||
508 | STRV_FOREACH_PAIR(k, v, details) { | |
509 | r = sd_bus_message_append(pk, "{ss}", *k, *v); | |
510 | if (r < 0) | |
511 | return r; | |
512 | } | |
513 | ||
514 | r = sd_bus_message_close_container(pk); | |
515 | if (r < 0) | |
516 | return r; | |
517 | ||
518 | r = sd_bus_message_append(pk, "us", !!interactive, NULL); | |
40ca29a1 LP |
519 | if (r < 0) |
520 | return r; | |
521 | ||
522 | q = new0(AsyncPolkitQuery, 1); | |
523 | if (!q) | |
524 | return -ENOMEM; | |
525 | ||
f3885791 | 526 | q->request = sd_bus_message_ref(call); |
40ca29a1 LP |
527 | q->callback = callback; |
528 | q->userdata = userdata; | |
529 | ||
f3885791 | 530 | r = hashmap_put(*registry, call, q); |
40ca29a1 | 531 | if (r < 0) { |
19befb2d | 532 | async_polkit_query_free(q); |
40ca29a1 LP |
533 | return r; |
534 | } | |
535 | ||
ebcf1f97 LP |
536 | q->registry = *registry; |
537 | ||
f3885791 | 538 | r = sd_bus_call_async(call->bus, &q->slot, pk, async_polkit_callback, q, 0); |
ebcf1f97 | 539 | if (r < 0) { |
19befb2d | 540 | async_polkit_query_free(q); |
40ca29a1 | 541 | return r; |
ebcf1f97 | 542 | } |
40ca29a1 LP |
543 | |
544 | return 0; | |
545 | #endif | |
546 | ||
547 | return -EACCES; | |
548 | } | |
549 | ||
36e34057 | 550 | void bus_verify_polkit_async_registry_free(Hashmap *registry) { |
40ca29a1 LP |
551 | #ifdef ENABLE_POLKIT |
552 | AsyncPolkitQuery *q; | |
553 | ||
554 | while ((q = hashmap_steal_first(registry))) | |
19befb2d | 555 | async_polkit_query_free(q); |
40ca29a1 LP |
556 | |
557 | hashmap_free(registry); | |
558 | #endif | |
559 | } | |
0c842e0a | 560 | |
718db961 | 561 | int bus_check_peercred(sd_bus *c) { |
0c842e0a TG |
562 | struct ucred ucred; |
563 | socklen_t l; | |
0f8bd8de | 564 | int fd; |
0c842e0a TG |
565 | |
566 | assert(c); | |
567 | ||
568 | fd = sd_bus_get_fd(c); | |
0f8bd8de LP |
569 | if (fd < 0) |
570 | return fd; | |
0c842e0a TG |
571 | |
572 | l = sizeof(struct ucred); | |
0f8bd8de | 573 | if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &ucred, &l) < 0) |
0c842e0a | 574 | return -errno; |
0c842e0a | 575 | |
0f8bd8de | 576 | if (l != sizeof(struct ucred)) |
0c842e0a | 577 | return -E2BIG; |
0c842e0a TG |
578 | |
579 | if (ucred.uid != 0 && ucred.uid != geteuid()) | |
580 | return -EPERM; | |
581 | ||
582 | return 1; | |
583 | } | |
584 | ||
266f3e26 | 585 | int bus_connect_system_systemd(sd_bus **_bus) { |
4afd3348 | 586 | _cleanup_(sd_bus_unrefp) sd_bus *bus = NULL; |
0c842e0a | 587 | int r; |
0c842e0a TG |
588 | |
589 | assert(_bus); | |
590 | ||
0f8bd8de | 591 | if (geteuid() != 0) |
266f3e26 | 592 | return sd_bus_default_system(_bus); |
a1da8583 | 593 | |
a6aa8912 LP |
594 | /* If we are root and kdbus is not available, then let's talk |
595 | * directly to the system instance, instead of going via the | |
596 | * bus */ | |
a1da8583 | 597 | |
0f8bd8de LP |
598 | r = sd_bus_new(&bus); |
599 | if (r < 0) | |
600 | return r; | |
a1da8583 | 601 | |
e3afaf6b | 602 | r = sd_bus_set_address(bus, KERNEL_SYSTEM_BUS_ADDRESS); |
0f8bd8de LP |
603 | if (r < 0) |
604 | return r; | |
a1da8583 | 605 | |
a6aa8912 LP |
606 | bus->bus_client = true; |
607 | ||
0f8bd8de | 608 | r = sd_bus_start(bus); |
a6aa8912 LP |
609 | if (r >= 0) { |
610 | *_bus = bus; | |
611 | bus = NULL; | |
612 | return 0; | |
613 | } | |
614 | ||
615 | bus = sd_bus_unref(bus); | |
a6aa8912 LP |
616 | |
617 | r = sd_bus_new(&bus); | |
0f8bd8de LP |
618 | if (r < 0) |
619 | return r; | |
a1da8583 | 620 | |
a6aa8912 LP |
621 | r = sd_bus_set_address(bus, "unix:path=/run/systemd/private"); |
622 | if (r < 0) | |
623 | return r; | |
624 | ||
625 | r = sd_bus_start(bus); | |
626 | if (r < 0) | |
266f3e26 | 627 | return sd_bus_default_system(_bus); |
a6aa8912 | 628 | |
0f8bd8de | 629 | r = bus_check_peercred(bus); |
a1da8583 TG |
630 | if (r < 0) |
631 | return r; | |
632 | ||
633 | *_bus = bus; | |
0f8bd8de LP |
634 | bus = NULL; |
635 | ||
a1da8583 TG |
636 | return 0; |
637 | } | |
638 | ||
266f3e26 | 639 | int bus_connect_user_systemd(sd_bus **_bus) { |
4afd3348 | 640 | _cleanup_(sd_bus_unrefp) sd_bus *bus = NULL; |
a6aa8912 | 641 | _cleanup_free_ char *ee = NULL; |
41dd15e4 LP |
642 | const char *e; |
643 | int r; | |
644 | ||
a6aa8912 | 645 | /* Try via kdbus first, and then directly */ |
41dd15e4 LP |
646 | |
647 | assert(_bus); | |
648 | ||
a6aa8912 LP |
649 | r = sd_bus_new(&bus); |
650 | if (r < 0) | |
651 | return r; | |
652 | ||
e3afaf6b | 653 | if (asprintf(&bus->address, KERNEL_USER_BUS_ADDRESS_FMT, getuid()) < 0) |
a6aa8912 LP |
654 | return -ENOMEM; |
655 | ||
656 | bus->bus_client = true; | |
657 | ||
658 | r = sd_bus_start(bus); | |
659 | if (r >= 0) { | |
660 | *_bus = bus; | |
661 | bus = NULL; | |
662 | return 0; | |
663 | } | |
664 | ||
665 | bus = sd_bus_unref(bus); | |
a6aa8912 | 666 | |
41dd15e4 | 667 | e = secure_getenv("XDG_RUNTIME_DIR"); |
537220d9 | 668 | if (!e) |
266f3e26 | 669 | return sd_bus_default_user(_bus); |
537220d9 | 670 | |
a6aa8912 LP |
671 | ee = bus_address_escape(e); |
672 | if (!ee) | |
537220d9 | 673 | return -ENOMEM; |
41dd15e4 LP |
674 | |
675 | r = sd_bus_new(&bus); | |
676 | if (r < 0) | |
677 | return r; | |
678 | ||
a6aa8912 LP |
679 | bus->address = strjoin("unix:path=", ee, "/systemd/private", NULL); |
680 | if (!bus->address) | |
681 | return -ENOMEM; | |
41dd15e4 LP |
682 | |
683 | r = sd_bus_start(bus); | |
684 | if (r < 0) | |
266f3e26 | 685 | return sd_bus_default_user(_bus); |
41dd15e4 LP |
686 | |
687 | r = bus_check_peercred(bus); | |
688 | if (r < 0) | |
689 | return r; | |
690 | ||
691 | *_bus = bus; | |
692 | bus = NULL; | |
693 | ||
694 | return 0; | |
695 | } | |
696 | ||
4f9a9105 ZJS |
697 | #define print_property(name, fmt, ...) \ |
698 | do { \ | |
699 | if (value) \ | |
700 | printf(fmt "\n", __VA_ARGS__); \ | |
701 | else \ | |
702 | printf("%s=" fmt "\n", name, __VA_ARGS__); \ | |
703 | } while(0) | |
704 | ||
705 | int bus_print_property(const char *name, sd_bus_message *property, bool value, bool all) { | |
a1da8583 TG |
706 | char type; |
707 | const char *contents; | |
9f6eb1cd | 708 | int r; |
a1da8583 TG |
709 | |
710 | assert(name); | |
711 | assert(property); | |
712 | ||
9f6eb1cd KS |
713 | r = sd_bus_message_peek_type(property, &type, &contents); |
714 | if (r < 0) | |
715 | return r; | |
a1da8583 TG |
716 | |
717 | switch (type) { | |
718 | ||
719 | case SD_BUS_TYPE_STRING: { | |
720 | const char *s; | |
9f6eb1cd KS |
721 | |
722 | r = sd_bus_message_read_basic(property, type, &s); | |
723 | if (r < 0) | |
724 | return r; | |
a1da8583 | 725 | |
27e9c5af LP |
726 | if (all || !isempty(s)) { |
727 | _cleanup_free_ char *escaped = NULL; | |
728 | ||
729 | escaped = xescape(s, "\n"); | |
730 | if (!escaped) | |
731 | return -ENOMEM; | |
732 | ||
4f9a9105 | 733 | print_property(name, "%s", escaped); |
27e9c5af | 734 | } |
a1da8583 TG |
735 | |
736 | return 1; | |
737 | } | |
738 | ||
739 | case SD_BUS_TYPE_BOOLEAN: { | |
c2fa048c | 740 | int b; |
a1da8583 | 741 | |
9f6eb1cd KS |
742 | r = sd_bus_message_read_basic(property, type, &b); |
743 | if (r < 0) | |
744 | return r; | |
745 | ||
4f9a9105 | 746 | print_property(name, "%s", yes_no(b)); |
a1da8583 TG |
747 | |
748 | return 1; | |
749 | } | |
750 | ||
751 | case SD_BUS_TYPE_UINT64: { | |
752 | uint64_t u; | |
753 | ||
9f6eb1cd KS |
754 | r = sd_bus_message_read_basic(property, type, &u); |
755 | if (r < 0) | |
756 | return r; | |
a1da8583 TG |
757 | |
758 | /* Yes, heuristics! But we can change this check | |
759 | * should it turn out to not be sufficient */ | |
760 | ||
761 | if (endswith(name, "Timestamp")) { | |
762 | char timestamp[FORMAT_TIMESTAMP_MAX], *t; | |
763 | ||
764 | t = format_timestamp(timestamp, sizeof(timestamp), u); | |
765 | if (t || all) | |
4f9a9105 | 766 | print_property(name, "%s", strempty(t)); |
a1da8583 TG |
767 | |
768 | } else if (strstr(name, "USec")) { | |
769 | char timespan[FORMAT_TIMESPAN_MAX]; | |
770 | ||
4f9a9105 | 771 | print_property(name, "%s", format_timespan(timespan, sizeof(timespan), u, 0)); |
a1da8583 | 772 | } else |
4f9a9105 | 773 | print_property(name, "%"PRIu64, u); |
a1da8583 TG |
774 | |
775 | return 1; | |
776 | } | |
777 | ||
d7161865 DM |
778 | case SD_BUS_TYPE_INT64: { |
779 | int64_t i; | |
780 | ||
781 | r = sd_bus_message_read_basic(property, type, &i); | |
782 | if (r < 0) | |
783 | return r; | |
784 | ||
4f9a9105 | 785 | print_property(name, "%"PRIi64, i); |
d7161865 DM |
786 | |
787 | return 1; | |
788 | } | |
789 | ||
a1da8583 TG |
790 | case SD_BUS_TYPE_UINT32: { |
791 | uint32_t u; | |
792 | ||
9f6eb1cd KS |
793 | r = sd_bus_message_read_basic(property, type, &u); |
794 | if (r < 0) | |
795 | return r; | |
a1da8583 TG |
796 | |
797 | if (strstr(name, "UMask") || strstr(name, "Mode")) | |
4f9a9105 | 798 | print_property(name, "%04o", u); |
a1da8583 | 799 | else |
4f9a9105 | 800 | print_property(name, "%"PRIu32, u); |
a1da8583 TG |
801 | |
802 | return 1; | |
803 | } | |
804 | ||
805 | case SD_BUS_TYPE_INT32: { | |
806 | int32_t i; | |
807 | ||
9f6eb1cd KS |
808 | r = sd_bus_message_read_basic(property, type, &i); |
809 | if (r < 0) | |
810 | return r; | |
a1da8583 | 811 | |
4f9a9105 | 812 | print_property(name, "%"PRIi32, i); |
a1da8583 TG |
813 | return 1; |
814 | } | |
815 | ||
816 | case SD_BUS_TYPE_DOUBLE: { | |
817 | double d; | |
818 | ||
9f6eb1cd KS |
819 | r = sd_bus_message_read_basic(property, type, &d); |
820 | if (r < 0) | |
821 | return r; | |
a1da8583 | 822 | |
4f9a9105 | 823 | print_property(name, "%g", d); |
a1da8583 TG |
824 | return 1; |
825 | } | |
826 | ||
827 | case SD_BUS_TYPE_ARRAY: | |
a1da8583 | 828 | if (streq(contents, "s")) { |
261afec5 MAP |
829 | bool first = true; |
830 | const char *str; | |
a1da8583 | 831 | |
9f6eb1cd KS |
832 | r = sd_bus_message_enter_container(property, SD_BUS_TYPE_ARRAY, contents); |
833 | if (r < 0) | |
834 | return r; | |
835 | ||
9ed794a3 | 836 | while ((r = sd_bus_message_read_basic(property, SD_BUS_TYPE_STRING, &str)) > 0) { |
27e9c5af LP |
837 | _cleanup_free_ char *escaped = NULL; |
838 | ||
4f9a9105 | 839 | if (first && !value) |
261afec5 MAP |
840 | printf("%s=", name); |
841 | ||
27e9c5af LP |
842 | escaped = xescape(str, "\n "); |
843 | if (!escaped) | |
844 | return -ENOMEM; | |
845 | ||
846 | printf("%s%s", first ? "" : " ", escaped); | |
261afec5 MAP |
847 | |
848 | first = false; | |
849 | } | |
9f6eb1cd KS |
850 | if (r < 0) |
851 | return r; | |
a1da8583 | 852 | |
4f9a9105 | 853 | if (first && all && !value) |
a1da8583 | 854 | printf("%s=", name); |
261afec5 | 855 | if (!first || all) |
a1da8583 | 856 | puts(""); |
a1da8583 | 857 | |
9f6eb1cd KS |
858 | r = sd_bus_message_exit_container(property); |
859 | if (r < 0) | |
860 | return r; | |
a1da8583 TG |
861 | |
862 | return 1; | |
863 | ||
864 | } else if (streq(contents, "y")) { | |
865 | const uint8_t *u; | |
866 | size_t n; | |
867 | ||
9f6eb1cd KS |
868 | r = sd_bus_message_read_array(property, SD_BUS_TYPE_BYTE, (const void**) &u, &n); |
869 | if (r < 0) | |
870 | return r; | |
871 | ||
a1da8583 TG |
872 | if (all || n > 0) { |
873 | unsigned int i; | |
874 | ||
4f9a9105 ZJS |
875 | if (!value) |
876 | printf("%s=", name); | |
a1da8583 TG |
877 | |
878 | for (i = 0; i < n; i++) | |
879 | printf("%02x", u[i]); | |
880 | ||
881 | puts(""); | |
882 | } | |
883 | ||
884 | return 1; | |
885 | ||
886 | } else if (streq(contents, "u")) { | |
887 | uint32_t *u; | |
888 | size_t n; | |
889 | ||
9f6eb1cd KS |
890 | r = sd_bus_message_read_array(property, SD_BUS_TYPE_UINT32, (const void**) &u, &n); |
891 | if (r < 0) | |
892 | return r; | |
893 | ||
a1da8583 TG |
894 | if (all || n > 0) { |
895 | unsigned int i; | |
896 | ||
4f9a9105 ZJS |
897 | if (!value) |
898 | printf("%s=", name); | |
a1da8583 TG |
899 | |
900 | for (i = 0; i < n; i++) | |
901 | printf("%08x", u[i]); | |
902 | ||
903 | puts(""); | |
904 | } | |
905 | ||
906 | return 1; | |
907 | } | |
908 | ||
909 | break; | |
910 | } | |
911 | ||
912 | return 0; | |
913 | } | |
d21ed1ea | 914 | |
85500523 | 915 | int bus_print_all_properties(sd_bus *bus, const char *dest, const char *path, char **filter, bool value, bool all) { |
4afd3348 LP |
916 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; |
917 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
ffc06c35 KS |
918 | int r; |
919 | ||
9f6eb1cd KS |
920 | assert(bus); |
921 | assert(path); | |
922 | ||
923 | r = sd_bus_call_method(bus, | |
27e72d6b | 924 | dest, |
ffc06c35 KS |
925 | path, |
926 | "org.freedesktop.DBus.Properties", | |
927 | "GetAll", | |
928 | &error, | |
9f6eb1cd | 929 | &reply, |
ffc06c35 | 930 | "s", ""); |
9f6eb1cd | 931 | if (r < 0) |
ffc06c35 | 932 | return r; |
ffc06c35 | 933 | |
9f6eb1cd | 934 | r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "{sv}"); |
ffc06c35 KS |
935 | if (r < 0) |
936 | return r; | |
937 | ||
9f6eb1cd | 938 | while ((r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) { |
ffc06c35 | 939 | const char *name; |
ffc06c35 | 940 | const char *contents; |
ffc06c35 | 941 | |
9f6eb1cd | 942 | r = sd_bus_message_read_basic(reply, SD_BUS_TYPE_STRING, &name); |
ffc06c35 KS |
943 | if (r < 0) |
944 | return r; | |
945 | ||
9f6eb1cd KS |
946 | if (!filter || strv_find(filter, name)) { |
947 | r = sd_bus_message_peek_type(reply, NULL, &contents); | |
948 | if (r < 0) | |
949 | return r; | |
950 | ||
951 | r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_VARIANT, contents); | |
952 | if (r < 0) | |
953 | return r; | |
ffc06c35 | 954 | |
85500523 | 955 | r = bus_print_property(name, reply, value, all); |
9f6eb1cd KS |
956 | if (r < 0) |
957 | return r; | |
27e72d6b SP |
958 | if (r == 0) { |
959 | if (all) | |
960 | printf("%s=[unprintable]\n", name); | |
961 | /* skip what we didn't read */ | |
962 | r = sd_bus_message_skip(reply, contents); | |
963 | if (r < 0) | |
964 | return r; | |
965 | } | |
9f6eb1cd KS |
966 | |
967 | r = sd_bus_message_exit_container(reply); | |
968 | if (r < 0) | |
969 | return r; | |
970 | } else { | |
971 | r = sd_bus_message_skip(reply, "v"); | |
972 | if (r < 0) | |
973 | return r; | |
974 | } | |
975 | ||
976 | r = sd_bus_message_exit_container(reply); | |
ffc06c35 KS |
977 | if (r < 0) |
978 | return r; | |
9f6eb1cd KS |
979 | } |
980 | if (r < 0) | |
981 | return r; | |
ffc06c35 | 982 | |
9f6eb1cd KS |
983 | r = sd_bus_message_exit_container(reply); |
984 | if (r < 0) | |
985 | return r; | |
ffc06c35 | 986 | |
9f6eb1cd KS |
987 | return 0; |
988 | } | |
ffc06c35 | 989 | |
9f6eb1cd KS |
990 | int bus_map_id128(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) { |
991 | sd_id128_t *p = userdata; | |
992 | const void *v; | |
993 | size_t n; | |
994 | int r; | |
ffc06c35 | 995 | |
9f6eb1cd KS |
996 | r = sd_bus_message_read_array(m, SD_BUS_TYPE_BYTE, &v, &n); |
997 | if (r < 0) | |
998 | return r; | |
ffc06c35 | 999 | |
9f6eb1cd KS |
1000 | if (n == 0) |
1001 | *p = SD_ID128_NULL; | |
1002 | else if (n == 16) | |
1003 | memcpy((*p).bytes, v, n); | |
1004 | else | |
1005 | return -EINVAL; | |
ffc06c35 | 1006 | |
9f6eb1cd KS |
1007 | return 0; |
1008 | } | |
ffc06c35 | 1009 | |
9f6eb1cd KS |
1010 | static int map_basic(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) { |
1011 | char type; | |
1012 | int r; | |
ffc06c35 | 1013 | |
9f6eb1cd KS |
1014 | r = sd_bus_message_peek_type(m, &type, NULL); |
1015 | if (r < 0) | |
1016 | return r; | |
ffc06c35 | 1017 | |
9f6eb1cd | 1018 | switch (type) { |
8b3b6f58 | 1019 | |
9f6eb1cd | 1020 | case SD_BUS_TYPE_STRING: { |
9f6eb1cd | 1021 | char **p = userdata; |
8b3b6f58 | 1022 | const char *s; |
ffc06c35 | 1023 | |
9f6eb1cd KS |
1024 | r = sd_bus_message_read_basic(m, type, &s); |
1025 | if (r < 0) | |
8b3b6f58 | 1026 | return r; |
ffc06c35 | 1027 | |
9f6eb1cd | 1028 | if (isempty(s)) |
0b83b8a4 | 1029 | s = NULL; |
ffc06c35 | 1030 | |
8b3b6f58 | 1031 | return free_and_strdup(p, s); |
9f6eb1cd | 1032 | } |
ffc06c35 | 1033 | |
9f6eb1cd | 1034 | case SD_BUS_TYPE_ARRAY: { |
7d6884b6 TA |
1035 | _cleanup_strv_free_ char **l = NULL; |
1036 | char ***p = userdata; | |
ffc06c35 | 1037 | |
9f6eb1cd KS |
1038 | r = bus_message_read_strv_extend(m, &l); |
1039 | if (r < 0) | |
8b3b6f58 | 1040 | return r; |
ffc06c35 | 1041 | |
9f6eb1cd KS |
1042 | strv_free(*p); |
1043 | *p = l; | |
1044 | l = NULL; | |
8b3b6f58 | 1045 | return 0; |
9f6eb1cd | 1046 | } |
ffc06c35 | 1047 | |
9f6eb1cd KS |
1048 | case SD_BUS_TYPE_BOOLEAN: { |
1049 | unsigned b; | |
43dcc86a | 1050 | int *p = userdata; |
ffc06c35 | 1051 | |
9f6eb1cd KS |
1052 | r = sd_bus_message_read_basic(m, type, &b); |
1053 | if (r < 0) | |
8b3b6f58 | 1054 | return r; |
ffc06c35 | 1055 | |
9f6eb1cd | 1056 | *p = b; |
8b3b6f58 | 1057 | return 0; |
9f6eb1cd | 1058 | } |
ffc06c35 | 1059 | |
bdf97b8a | 1060 | case SD_BUS_TYPE_INT32: |
9f6eb1cd | 1061 | case SD_BUS_TYPE_UINT32: { |
bdf97b8a | 1062 | uint32_t u, *p = userdata; |
9f6eb1cd KS |
1063 | |
1064 | r = sd_bus_message_read_basic(m, type, &u); | |
1065 | if (r < 0) | |
8b3b6f58 | 1066 | return r; |
ffc06c35 | 1067 | |
9f6eb1cd | 1068 | *p = u; |
8b3b6f58 | 1069 | return 0; |
9f6eb1cd KS |
1070 | } |
1071 | ||
bdf97b8a | 1072 | case SD_BUS_TYPE_INT64: |
9f6eb1cd | 1073 | case SD_BUS_TYPE_UINT64: { |
bdf97b8a | 1074 | uint64_t t, *p = userdata; |
9f6eb1cd KS |
1075 | |
1076 | r = sd_bus_message_read_basic(m, type, &t); | |
1077 | if (r < 0) | |
8b3b6f58 | 1078 | return r; |
ffc06c35 | 1079 | |
9f6eb1cd | 1080 | *p = t; |
8b3b6f58 | 1081 | return 0; |
9f6eb1cd KS |
1082 | } |
1083 | ||
52e045f9 | 1084 | case SD_BUS_TYPE_DOUBLE: { |
8b3b6f58 | 1085 | double d, *p = userdata; |
52e045f9 SS |
1086 | |
1087 | r = sd_bus_message_read_basic(m, type, &d); | |
1088 | if (r < 0) | |
8b3b6f58 | 1089 | return r; |
52e045f9 SS |
1090 | |
1091 | *p = d; | |
8b3b6f58 LP |
1092 | return 0; |
1093 | }} | |
52e045f9 | 1094 | |
8b3b6f58 | 1095 | return -EOPNOTSUPP; |
9f6eb1cd KS |
1096 | } |
1097 | ||
fe506d56 LP |
1098 | int bus_message_map_all_properties( |
1099 | sd_bus_message *m, | |
1100 | const struct bus_properties_map *map, | |
1101 | void *userdata) { | |
1102 | ||
4afd3348 | 1103 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
9f6eb1cd KS |
1104 | int r; |
1105 | ||
aae2b488 | 1106 | assert(m); |
9f6eb1cd KS |
1107 | assert(map); |
1108 | ||
9f6eb1cd KS |
1109 | r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "{sv}"); |
1110 | if (r < 0) | |
1111 | return r; | |
1112 | ||
1113 | while ((r = sd_bus_message_enter_container(m, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) { | |
1114 | const struct bus_properties_map *prop; | |
1115 | const char *member; | |
1116 | const char *contents; | |
1117 | void *v; | |
1118 | unsigned i; | |
1119 | ||
1120 | r = sd_bus_message_read_basic(m, SD_BUS_TYPE_STRING, &member); | |
ffc06c35 KS |
1121 | if (r < 0) |
1122 | return r; | |
1123 | ||
9f6eb1cd KS |
1124 | for (i = 0, prop = NULL; map[i].member; i++) |
1125 | if (streq(map[i].member, member)) { | |
1126 | prop = &map[i]; | |
1127 | break; | |
1128 | } | |
1129 | ||
1130 | if (prop) { | |
1131 | r = sd_bus_message_peek_type(m, NULL, &contents); | |
1132 | if (r < 0) | |
1133 | return r; | |
1134 | ||
1135 | r = sd_bus_message_enter_container(m, SD_BUS_TYPE_VARIANT, contents); | |
1136 | if (r < 0) | |
1137 | return r; | |
1138 | ||
1139 | v = (uint8_t *)userdata + prop->offset; | |
27e72d6b | 1140 | if (map[i].set) |
fe506d56 | 1141 | r = prop->set(sd_bus_message_get_bus(m), member, m, &error, v); |
9f6eb1cd | 1142 | else |
fe506d56 | 1143 | r = map_basic(sd_bus_message_get_bus(m), member, m, &error, v); |
2b49a470 TA |
1144 | if (r < 0) |
1145 | return r; | |
9f6eb1cd KS |
1146 | |
1147 | r = sd_bus_message_exit_container(m); | |
1148 | if (r < 0) | |
1149 | return r; | |
1150 | } else { | |
1151 | r = sd_bus_message_skip(m, "v"); | |
1152 | if (r < 0) | |
6c1508b8 | 1153 | return r; |
9f6eb1cd KS |
1154 | } |
1155 | ||
ffc06c35 KS |
1156 | r = sd_bus_message_exit_container(m); |
1157 | if (r < 0) | |
1158 | return r; | |
1159 | } | |
fe506d56 LP |
1160 | if (r < 0) |
1161 | return r; | |
ffc06c35 | 1162 | |
aae2b488 DH |
1163 | return sd_bus_message_exit_container(m); |
1164 | } | |
1165 | ||
fe506d56 LP |
1166 | int bus_message_map_properties_changed( |
1167 | sd_bus_message *m, | |
1168 | const struct bus_properties_map *map, | |
1169 | void *userdata) { | |
1170 | ||
aae2b488 DH |
1171 | const char *member; |
1172 | int r, invalidated, i; | |
1173 | ||
aae2b488 DH |
1174 | assert(m); |
1175 | assert(map); | |
1176 | ||
fe506d56 | 1177 | r = bus_message_map_all_properties(m, map, userdata); |
aae2b488 DH |
1178 | if (r < 0) |
1179 | return r; | |
1180 | ||
1181 | r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "s"); | |
1182 | if (r < 0) | |
1183 | return r; | |
1184 | ||
1185 | invalidated = 0; | |
1186 | while ((r = sd_bus_message_read_basic(m, SD_BUS_TYPE_STRING, &member)) > 0) | |
1187 | for (i = 0; map[i].member; i++) | |
1188 | if (streq(map[i].member, member)) { | |
1189 | ++invalidated; | |
1190 | break; | |
1191 | } | |
fe506d56 LP |
1192 | if (r < 0) |
1193 | return r; | |
aae2b488 DH |
1194 | |
1195 | r = sd_bus_message_exit_container(m); | |
1196 | if (r < 0) | |
1197 | return r; | |
1198 | ||
1199 | return invalidated; | |
1200 | } | |
1201 | ||
fe506d56 LP |
1202 | int bus_map_all_properties( |
1203 | sd_bus *bus, | |
1204 | const char *destination, | |
1205 | const char *path, | |
1206 | const struct bus_properties_map *map, | |
1207 | void *userdata) { | |
1208 | ||
4afd3348 LP |
1209 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; |
1210 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
aae2b488 DH |
1211 | int r; |
1212 | ||
1213 | assert(bus); | |
1214 | assert(destination); | |
1215 | assert(path); | |
1216 | assert(map); | |
1217 | ||
1218 | r = sd_bus_call_method( | |
1219 | bus, | |
1220 | destination, | |
1221 | path, | |
1222 | "org.freedesktop.DBus.Properties", | |
1223 | "GetAll", | |
1224 | &error, | |
1225 | &m, | |
1226 | "s", ""); | |
1227 | if (r < 0) | |
1228 | return r; | |
1229 | ||
fe506d56 | 1230 | return bus_message_map_all_properties(m, map, userdata); |
ffc06c35 KS |
1231 | } |
1232 | ||
266f3e26 | 1233 | int bus_connect_transport(BusTransport transport, const char *host, bool user, sd_bus **bus) { |
d21ed1ea LP |
1234 | int r; |
1235 | ||
1236 | assert(transport >= 0); | |
1237 | assert(transport < _BUS_TRANSPORT_MAX); | |
1238 | assert(bus); | |
1239 | ||
1240 | assert_return((transport == BUS_TRANSPORT_LOCAL) == !host, -EINVAL); | |
15411c0c | 1241 | assert_return(transport == BUS_TRANSPORT_LOCAL || !user, -EOPNOTSUPP); |
d21ed1ea LP |
1242 | |
1243 | switch (transport) { | |
1244 | ||
1245 | case BUS_TRANSPORT_LOCAL: | |
1246 | if (user) | |
76b54375 | 1247 | r = sd_bus_default_user(bus); |
d21ed1ea | 1248 | else |
76b54375 | 1249 | r = sd_bus_default_system(bus); |
d21ed1ea LP |
1250 | |
1251 | break; | |
1252 | ||
1253 | case BUS_TRANSPORT_REMOTE: | |
3db729cb | 1254 | r = sd_bus_open_system_remote(bus, host); |
41dd15e4 LP |
1255 | break; |
1256 | ||
de33fc62 LP |
1257 | case BUS_TRANSPORT_MACHINE: |
1258 | r = sd_bus_open_system_machine(bus, host); | |
41dd15e4 LP |
1259 | break; |
1260 | ||
1261 | default: | |
1262 | assert_not_reached("Hmm, unknown transport type."); | |
1263 | } | |
1264 | ||
1265 | return r; | |
1266 | } | |
1267 | ||
266f3e26 | 1268 | int bus_connect_transport_systemd(BusTransport transport, const char *host, bool user, sd_bus **bus) { |
41dd15e4 LP |
1269 | int r; |
1270 | ||
1271 | assert(transport >= 0); | |
1272 | assert(transport < _BUS_TRANSPORT_MAX); | |
1273 | assert(bus); | |
1274 | ||
1275 | assert_return((transport == BUS_TRANSPORT_LOCAL) == !host, -EINVAL); | |
15411c0c | 1276 | assert_return(transport == BUS_TRANSPORT_LOCAL || !user, -EOPNOTSUPP); |
41dd15e4 LP |
1277 | |
1278 | switch (transport) { | |
1279 | ||
1280 | case BUS_TRANSPORT_LOCAL: | |
1281 | if (user) | |
266f3e26 | 1282 | r = bus_connect_user_systemd(bus); |
41dd15e4 | 1283 | else |
266f3e26 | 1284 | r = bus_connect_system_systemd(bus); |
41dd15e4 LP |
1285 | |
1286 | break; | |
1287 | ||
1288 | case BUS_TRANSPORT_REMOTE: | |
3db729cb | 1289 | r = sd_bus_open_system_remote(bus, host); |
d21ed1ea LP |
1290 | break; |
1291 | ||
de33fc62 LP |
1292 | case BUS_TRANSPORT_MACHINE: |
1293 | r = sd_bus_open_system_machine(bus, host); | |
d21ed1ea LP |
1294 | break; |
1295 | ||
1296 | default: | |
1297 | assert_not_reached("Hmm, unknown transport type."); | |
1298 | } | |
1299 | ||
1300 | return r; | |
1301 | } | |
e6504030 LP |
1302 | |
1303 | int bus_property_get_bool( | |
1304 | sd_bus *bus, | |
1305 | const char *path, | |
1306 | const char *interface, | |
1307 | const char *property, | |
1308 | sd_bus_message *reply, | |
ebcf1f97 LP |
1309 | void *userdata, |
1310 | sd_bus_error *error) { | |
e6504030 LP |
1311 | |
1312 | int b = *(bool*) userdata; | |
1313 | ||
1314 | return sd_bus_message_append_basic(reply, 'b', &b); | |
1315 | } | |
1316 | ||
718db961 LP |
1317 | #if __SIZEOF_SIZE_T__ != 8 |
1318 | int bus_property_get_size( | |
e6504030 LP |
1319 | sd_bus *bus, |
1320 | const char *path, | |
1321 | const char *interface, | |
1322 | const char *property, | |
1323 | sd_bus_message *reply, | |
ebcf1f97 LP |
1324 | void *userdata, |
1325 | sd_bus_error *error) { | |
e6504030 | 1326 | |
718db961 | 1327 | uint64_t sz = *(size_t*) userdata; |
e6504030 | 1328 | |
718db961 | 1329 | return sd_bus_message_append_basic(reply, 't', &sz); |
e6504030 | 1330 | } |
718db961 LP |
1331 | #endif |
1332 | ||
1333 | #if __SIZEOF_LONG__ != 8 | |
1334 | int bus_property_get_long( | |
1335 | sd_bus *bus, | |
1336 | const char *path, | |
1337 | const char *interface, | |
1338 | const char *property, | |
1339 | sd_bus_message *reply, | |
ebcf1f97 LP |
1340 | void *userdata, |
1341 | sd_bus_error *error) { | |
718db961 LP |
1342 | |
1343 | int64_t l = *(long*) userdata; | |
1344 | ||
1345 | return sd_bus_message_append_basic(reply, 'x', &l); | |
1346 | } | |
1347 | ||
1348 | int bus_property_get_ulong( | |
1349 | sd_bus *bus, | |
1350 | const char *path, | |
1351 | const char *interface, | |
1352 | const char *property, | |
1353 | sd_bus_message *reply, | |
ebcf1f97 LP |
1354 | void *userdata, |
1355 | sd_bus_error *error) { | |
718db961 LP |
1356 | |
1357 | uint64_t ul = *(unsigned long*) userdata; | |
1358 | ||
1359 | return sd_bus_message_append_basic(reply, 't', &ul); | |
1360 | } | |
1361 | #endif | |
5b30bef8 LP |
1362 | |
1363 | int bus_log_parse_error(int r) { | |
23bbb0de | 1364 | return log_error_errno(r, "Failed to parse bus message: %m"); |
5b30bef8 | 1365 | } |
f459b602 MAP |
1366 | |
1367 | int bus_log_create_error(int r) { | |
23bbb0de | 1368 | return log_error_errno(r, "Failed to create bus message: %m"); |
f459b602 MAP |
1369 | } |
1370 | ||
98a4c30b DH |
1371 | /** |
1372 | * bus_path_encode_unique() - encode unique object path | |
1373 | * @b: bus connection or NULL | |
1374 | * @prefix: object path prefix | |
1375 | * @sender_id: unique-name of client, or NULL | |
1376 | * @external_id: external ID to be chosen by client, or NULL | |
1377 | * @ret_path: storage for encoded object path pointer | |
1378 | * | |
1379 | * Whenever we provide a bus API that allows clients to create and manage | |
1380 | * server-side objects, we need to provide a unique name for these objects. If | |
1381 | * we let the server choose the name, we suffer from a race condition: If a | |
1382 | * client creates an object asynchronously, it cannot destroy that object until | |
1383 | * it received the method reply. It cannot know the name of the new object, | |
1384 | * thus, it cannot destroy it. Furthermore, it enforces a round-trip. | |
1385 | * | |
1386 | * Therefore, many APIs allow the client to choose the unique name for newly | |
1387 | * created objects. There're two problems to solve, though: | |
1388 | * 1) Object names are usually defined via dbus object paths, which are | |
1389 | * usually globally namespaced. Therefore, multiple clients must be able | |
1390 | * to choose unique object names without interference. | |
1391 | * 2) If multiple libraries share the same bus connection, they must be | |
1392 | * able to choose unique object names without interference. | |
1393 | * The first problem is solved easily by prefixing a name with the | |
1394 | * unique-bus-name of a connection. The server side must enforce this and | |
1395 | * reject any other name. The second problem is solved by providing unique | |
1396 | * suffixes from within sd-bus. | |
1397 | * | |
1398 | * This helper allows clients to create unique object-paths. It uses the | |
1399 | * template '/prefix/sender_id/external_id' and returns the new path in | |
1400 | * @ret_path (must be freed by the caller). | |
1401 | * If @sender_id is NULL, the unique-name of @b is used. If @external_id is | |
1402 | * NULL, this function allocates a unique suffix via @b (by requesting a new | |
1403 | * cookie). If both @sender_id and @external_id are given, @b can be passed as | |
1404 | * NULL. | |
1405 | * | |
1406 | * Returns: 0 on success, negative error code on failure. | |
1407 | */ | |
1408 | int bus_path_encode_unique(sd_bus *b, const char *prefix, const char *sender_id, const char *external_id, char **ret_path) { | |
1409 | _cleanup_free_ char *sender_label = NULL, *external_label = NULL; | |
1410 | char external_buf[DECIMAL_STR_MAX(uint64_t)], *p; | |
1411 | int r; | |
1412 | ||
1413 | assert_return(b || (sender_id && external_id), -EINVAL); | |
1414 | assert_return(object_path_is_valid(prefix), -EINVAL); | |
1415 | assert_return(ret_path, -EINVAL); | |
1416 | ||
1417 | if (!sender_id) { | |
1418 | r = sd_bus_get_unique_name(b, &sender_id); | |
1419 | if (r < 0) | |
1420 | return r; | |
1421 | } | |
1422 | ||
1423 | if (!external_id) { | |
1424 | xsprintf(external_buf, "%"PRIu64, ++b->cookie); | |
1425 | external_id = external_buf; | |
1426 | } | |
1427 | ||
1428 | sender_label = bus_label_escape(sender_id); | |
1429 | if (!sender_label) | |
1430 | return -ENOMEM; | |
1431 | ||
1432 | external_label = bus_label_escape(external_id); | |
1433 | if (!external_label) | |
1434 | return -ENOMEM; | |
1435 | ||
1436 | p = strjoin(prefix, "/", sender_label, "/", external_label, NULL); | |
1437 | if (!p) | |
1438 | return -ENOMEM; | |
1439 | ||
1440 | *ret_path = p; | |
1441 | return 0; | |
1442 | } | |
1443 | ||
1444 | /** | |
1445 | * bus_path_decode_unique() - decode unique object path | |
1446 | * @path: object path to decode | |
1447 | * @prefix: object path prefix | |
1448 | * @ret_sender: output parameter for sender-id label | |
1449 | * @ret_external: output parameter for external-id label | |
1450 | * | |
1451 | * This does the reverse of bus_path_encode_unique() (see its description for | |
1452 | * details). Both trailing labels, sender-id and external-id, are unescaped and | |
1453 | * returned in the given output parameters (the caller must free them). | |
1454 | * | |
1455 | * Note that this function returns 0 if the path does not match the template | |
1456 | * (see bus_path_encode_unique()), 1 if it matched. | |
1457 | * | |
1458 | * Returns: Negative error code on failure, 0 if the given object path does not | |
1459 | * match the template (return parameters are set to NULL), 1 if it was | |
1460 | * parsed successfully (return parameters contain allocated labels). | |
1461 | */ | |
1462 | int bus_path_decode_unique(const char *path, const char *prefix, char **ret_sender, char **ret_external) { | |
1463 | const char *p, *q; | |
1464 | char *sender, *external; | |
1465 | ||
1466 | assert(object_path_is_valid(path)); | |
1467 | assert(object_path_is_valid(prefix)); | |
1468 | assert(ret_sender); | |
1469 | assert(ret_external); | |
1470 | ||
1471 | p = object_path_startswith(path, prefix); | |
1472 | if (!p) { | |
1473 | *ret_sender = NULL; | |
1474 | *ret_external = NULL; | |
1475 | return 0; | |
1476 | } | |
1477 | ||
1478 | q = strchr(p, '/'); | |
1479 | if (!q) { | |
1480 | *ret_sender = NULL; | |
1481 | *ret_external = NULL; | |
1482 | return 0; | |
1483 | } | |
1484 | ||
1485 | sender = bus_label_unescape_n(p, q - p); | |
1486 | external = bus_label_unescape(q + 1); | |
1487 | if (!sender || !external) { | |
1488 | free(sender); | |
1489 | free(external); | |
1490 | return -ENOMEM; | |
1491 | } | |
1492 | ||
1493 | *ret_sender = sender; | |
1494 | *ret_external = external; | |
1495 | return 1; | |
1496 | } | |
057171ef | 1497 | |
c9d031c3 EV |
1498 | int bus_property_get_rlimit( |
1499 | sd_bus *bus, | |
1500 | const char *path, | |
1501 | const char *interface, | |
1502 | const char *property, | |
1503 | sd_bus_message *reply, | |
1504 | void *userdata, | |
1505 | sd_bus_error *error) { | |
1506 | ||
1507 | struct rlimit *rl; | |
1508 | uint64_t u; | |
1509 | rlim_t x; | |
147f6858 | 1510 | const char *is_soft; |
c9d031c3 EV |
1511 | |
1512 | assert(bus); | |
1513 | assert(reply); | |
1514 | assert(userdata); | |
1515 | ||
147f6858 | 1516 | is_soft = endswith(property, "Soft"); |
c9d031c3 EV |
1517 | rl = *(struct rlimit**) userdata; |
1518 | if (rl) | |
147f6858 | 1519 | x = is_soft ? rl->rlim_cur : rl->rlim_max; |
c9d031c3 EV |
1520 | else { |
1521 | struct rlimit buf = {}; | |
1522 | int z; | |
147f6858 EV |
1523 | const char *s; |
1524 | ||
1525 | s = is_soft ? strndupa(property, is_soft - property) : property; | |
c9d031c3 | 1526 | |
147f6858 | 1527 | z = rlimit_from_string(strstr(s, "Limit")); |
c9d031c3 EV |
1528 | assert(z >= 0); |
1529 | ||
1530 | getrlimit(z, &buf); | |
147f6858 | 1531 | x = is_soft ? buf.rlim_cur : buf.rlim_max; |
c9d031c3 EV |
1532 | } |
1533 | ||
1534 | /* rlim_t might have different sizes, let's map | |
1535 | * RLIMIT_INFINITY to (uint64_t) -1, so that it is the same on | |
1536 | * all archs */ | |
1537 | u = x == RLIM_INFINITY ? (uint64_t) -1 : (uint64_t) x; | |
1538 | ||
1539 | return sd_bus_message_append(reply, "t", u); | |
1540 | } |