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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" |
73186d53 | 46 | #include "nsflags.h" |
6bedfcbb | 47 | #include "parse-util.h" |
ee104e11 | 48 | #include "proc-cmdline.h" |
78f22b97 | 49 | #include "rlimit-util.h" |
15a5e950 | 50 | #include "stdio-util.h" |
d53d9474 | 51 | #include "strv.h" |
ee104e11 | 52 | #include "user-util.h" |
40ca29a1 | 53 | |
19070062 | 54 | static int name_owner_change_callback(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { |
40ca29a1 LP |
55 | sd_event *e = userdata; |
56 | ||
40ca29a1 LP |
57 | assert(m); |
58 | assert(e); | |
59 | ||
19070062 | 60 | sd_bus_close(sd_bus_message_get_bus(m)); |
6203e07a | 61 | sd_event_exit(e, 0); |
b27adf35 | 62 | |
40ca29a1 LP |
63 | return 1; |
64 | } | |
65 | ||
6203e07a | 66 | int bus_async_unregister_and_exit(sd_event *e, sd_bus *bus, const char *name) { |
40ca29a1 | 67 | _cleanup_free_ char *match = NULL; |
11846aa7 | 68 | const char *unique; |
40ca29a1 LP |
69 | int r; |
70 | ||
71 | assert(e); | |
72 | assert(bus); | |
73 | assert(name); | |
74 | ||
6203e07a LP |
75 | /* We unregister the name here and then wait for the |
76 | * NameOwnerChanged signal for this event to arrive before we | |
77 | * quit. We do this in order to make sure that any queued | |
78 | * requests are still processed before we really exit. */ | |
79 | ||
11846aa7 | 80 | r = sd_bus_get_unique_name(bus, &unique); |
40ca29a1 LP |
81 | if (r < 0) |
82 | return r; | |
83 | ||
11846aa7 LP |
84 | r = asprintf(&match, |
85 | "sender='org.freedesktop.DBus'," | |
86 | "type='signal'," | |
87 | "interface='org.freedesktop.DBus'," | |
88 | "member='NameOwnerChanged'," | |
89 | "path='/org/freedesktop/DBus'," | |
90 | "arg0='%s'," | |
91 | "arg1='%s'," | |
92 | "arg2=''", name, unique); | |
93 | if (r < 0) | |
94 | return -ENOMEM; | |
95 | ||
19befb2d | 96 | r = sd_bus_add_match(bus, NULL, match, name_owner_change_callback, e); |
40ca29a1 LP |
97 | if (r < 0) |
98 | return r; | |
99 | ||
100 | r = sd_bus_release_name(bus, name); | |
101 | if (r < 0) | |
102 | return r; | |
103 | ||
40ca29a1 LP |
104 | return 0; |
105 | } | |
106 | ||
37224a5f LP |
107 | int bus_event_loop_with_idle( |
108 | sd_event *e, | |
109 | sd_bus *bus, | |
110 | const char *name, | |
111 | usec_t timeout, | |
112 | check_idle_t check_idle, | |
113 | void *userdata) { | |
40ca29a1 | 114 | bool exiting = false; |
6203e07a | 115 | int r, code; |
40ca29a1 LP |
116 | |
117 | assert(e); | |
118 | assert(bus); | |
119 | assert(name); | |
120 | ||
121 | for (;;) { | |
37224a5f LP |
122 | bool idle; |
123 | ||
40ca29a1 LP |
124 | r = sd_event_get_state(e); |
125 | if (r < 0) | |
126 | return r; | |
40ca29a1 LP |
127 | if (r == SD_EVENT_FINISHED) |
128 | break; | |
129 | ||
37224a5f LP |
130 | if (check_idle) |
131 | idle = check_idle(userdata); | |
132 | else | |
133 | idle = true; | |
134 | ||
135 | r = sd_event_run(e, exiting || !idle ? (uint64_t) -1 : timeout); | |
40ca29a1 LP |
136 | if (r < 0) |
137 | return r; | |
138 | ||
a8ba6cd1 | 139 | if (r == 0 && !exiting && idle) { |
b27adf35 LP |
140 | |
141 | r = sd_bus_try_close(bus); | |
142 | if (r == -EBUSY) | |
143 | continue; | |
144 | ||
430e21c2 LP |
145 | /* Fallback for dbus1 connections: we |
146 | * unregister the name and wait for the | |
147 | * response to come through for it */ | |
15411c0c | 148 | if (r == -EOPNOTSUPP) { |
430e21c2 LP |
149 | |
150 | /* Inform the service manager that we | |
151 | * are going down, so that it will | |
152 | * queue all further start requests, | |
153 | * instead of assuming we are already | |
154 | * running. */ | |
155 | sd_notify(false, "STOPPING=1"); | |
b27adf35 LP |
156 | |
157 | r = bus_async_unregister_and_exit(e, bus, name); | |
158 | if (r < 0) | |
159 | return r; | |
160 | ||
161 | exiting = true; | |
162 | continue; | |
163 | } | |
164 | ||
40ca29a1 LP |
165 | if (r < 0) |
166 | return r; | |
167 | ||
b27adf35 LP |
168 | sd_event_exit(e, 0); |
169 | break; | |
40ca29a1 LP |
170 | } |
171 | } | |
172 | ||
6203e07a LP |
173 | r = sd_event_get_exit_code(e, &code); |
174 | if (r < 0) | |
175 | return r; | |
176 | ||
177 | return code; | |
40ca29a1 LP |
178 | } |
179 | ||
5fd38859 | 180 | int bus_name_has_owner(sd_bus *c, const char *name, sd_bus_error *error) { |
4afd3348 | 181 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *rep = NULL; |
5fd38859 DH |
182 | int r, has_owner = 0; |
183 | ||
184 | assert(c); | |
185 | assert(name); | |
186 | ||
187 | r = sd_bus_call_method(c, | |
188 | "org.freedesktop.DBus", | |
189 | "/org/freedesktop/dbus", | |
190 | "org.freedesktop.DBus", | |
191 | "NameHasOwner", | |
192 | error, | |
193 | &rep, | |
194 | "s", | |
195 | name); | |
196 | if (r < 0) | |
197 | return r; | |
198 | ||
199 | r = sd_bus_message_read_basic(rep, 'b', &has_owner); | |
200 | if (r < 0) | |
201 | return sd_bus_error_set_errno(error, r); | |
202 | ||
203 | return has_owner; | |
204 | } | |
205 | ||
c529695e | 206 | static int check_good_user(sd_bus_message *m, uid_t good_user) { |
4afd3348 | 207 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; |
c529695e LP |
208 | uid_t sender_uid; |
209 | int r; | |
210 | ||
211 | assert(m); | |
212 | ||
213 | if (good_user == UID_INVALID) | |
214 | return 0; | |
215 | ||
216 | r = sd_bus_query_sender_creds(m, SD_BUS_CREDS_EUID, &creds); | |
217 | if (r < 0) | |
218 | return r; | |
219 | ||
0f514420 LP |
220 | /* Don't trust augmented credentials for authorization */ |
221 | assert_return((sd_bus_creds_get_augmented_mask(creds) & SD_BUS_CREDS_EUID) == 0, -EPERM); | |
222 | ||
c529695e LP |
223 | r = sd_bus_creds_get_euid(creds, &sender_uid); |
224 | if (r < 0) | |
225 | return r; | |
226 | ||
227 | return sender_uid == good_user; | |
228 | } | |
229 | ||
ceb24229 | 230 | int bus_test_polkit( |
f3885791 | 231 | sd_bus_message *call, |
def9a7aa | 232 | int capability, |
40ca29a1 | 233 | const char *action, |
403ed0e5 | 234 | const char **details, |
c529695e | 235 | uid_t good_user, |
40ca29a1 LP |
236 | bool *_challenge, |
237 | sd_bus_error *e) { | |
238 | ||
40ca29a1 LP |
239 | int r; |
240 | ||
f3885791 | 241 | assert(call); |
40ca29a1 LP |
242 | assert(action); |
243 | ||
ceb24229 LP |
244 | /* Tests non-interactively! */ |
245 | ||
c529695e LP |
246 | r = check_good_user(call, good_user); |
247 | if (r != 0) | |
248 | return r; | |
249 | ||
f3885791 | 250 | r = sd_bus_query_sender_privilege(call, capability); |
5b12334d LP |
251 | if (r < 0) |
252 | return r; | |
f3885791 | 253 | else if (r > 0) |
40ca29a1 | 254 | return 1; |
40ca29a1 LP |
255 | #ifdef ENABLE_POLKIT |
256 | else { | |
4afd3348 LP |
257 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *request = NULL; |
258 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; | |
ceb24229 | 259 | int authorized = false, challenge = false; |
403ed0e5 | 260 | const char *sender, **k, **v; |
5b12334d | 261 | |
f3885791 | 262 | sender = sd_bus_message_get_sender(call); |
5b12334d LP |
263 | if (!sender) |
264 | return -EBADMSG; | |
40ca29a1 | 265 | |
403ed0e5 | 266 | r = sd_bus_message_new_method_call( |
f3885791 | 267 | call->bus, |
403ed0e5 | 268 | &request, |
40ca29a1 LP |
269 | "org.freedesktop.PolicyKit1", |
270 | "/org/freedesktop/PolicyKit1/Authority", | |
271 | "org.freedesktop.PolicyKit1.Authority", | |
403ed0e5 MC |
272 | "CheckAuthorization"); |
273 | if (r < 0) | |
274 | return r; | |
275 | ||
276 | r = sd_bus_message_append( | |
277 | request, | |
278 | "(sa{sv})s", | |
40ca29a1 | 279 | "system-bus-name", 1, "name", "s", sender, |
403ed0e5 MC |
280 | action); |
281 | if (r < 0) | |
282 | return r; | |
283 | ||
284 | r = sd_bus_message_open_container(request, 'a', "{ss}"); | |
285 | if (r < 0) | |
286 | return r; | |
40ca29a1 | 287 | |
403ed0e5 MC |
288 | STRV_FOREACH_PAIR(k, v, details) { |
289 | r = sd_bus_message_append(request, "{ss}", *k, *v); | |
290 | if (r < 0) | |
291 | return r; | |
292 | } | |
293 | ||
294 | r = sd_bus_message_close_container(request); | |
295 | if (r < 0) | |
296 | return r; | |
297 | ||
298 | r = sd_bus_message_append(request, "us", 0, NULL); | |
299 | if (r < 0) | |
300 | return r; | |
301 | ||
302 | r = sd_bus_call(call->bus, request, 0, e, &reply); | |
40ca29a1 LP |
303 | if (r < 0) { |
304 | /* Treat no PK available as access denied */ | |
305 | if (sd_bus_error_has_name(e, SD_BUS_ERROR_SERVICE_UNKNOWN)) { | |
306 | sd_bus_error_free(e); | |
307 | return -EACCES; | |
308 | } | |
309 | ||
310 | return r; | |
311 | } | |
312 | ||
313333b4 | 313 | r = sd_bus_message_enter_container(reply, 'r', "bba{ss}"); |
2b49a470 TA |
314 | if (r < 0) |
315 | return r; | |
316 | ||
317 | r = sd_bus_message_read(reply, "bb", &authorized, &challenge); | |
318 | if (r < 0) | |
319 | return r; | |
40ca29a1 LP |
320 | |
321 | if (authorized) | |
322 | return 1; | |
323 | ||
324 | if (_challenge) { | |
325 | *_challenge = challenge; | |
326 | return 0; | |
327 | } | |
328 | } | |
329 | #endif | |
330 | ||
331 | return -EACCES; | |
332 | } | |
333 | ||
334 | #ifdef ENABLE_POLKIT | |
335 | ||
336 | typedef struct AsyncPolkitQuery { | |
337 | sd_bus_message *request, *reply; | |
338 | sd_bus_message_handler_t callback; | |
339 | void *userdata; | |
19befb2d | 340 | sd_bus_slot *slot; |
ebcf1f97 | 341 | Hashmap *registry; |
40ca29a1 LP |
342 | } AsyncPolkitQuery; |
343 | ||
19befb2d | 344 | static void async_polkit_query_free(AsyncPolkitQuery *q) { |
ebcf1f97 LP |
345 | |
346 | if (!q) | |
347 | return; | |
348 | ||
19befb2d | 349 | sd_bus_slot_unref(q->slot); |
ebcf1f97 LP |
350 | |
351 | if (q->registry && q->request) | |
352 | hashmap_remove(q->registry, q->request); | |
353 | ||
354 | sd_bus_message_unref(q->request); | |
355 | sd_bus_message_unref(q->reply); | |
356 | ||
357 | free(q); | |
358 | } | |
359 | ||
19070062 | 360 | static int async_polkit_callback(sd_bus_message *reply, void *userdata, sd_bus_error *error) { |
4afd3348 | 361 | _cleanup_(sd_bus_error_free) sd_bus_error error_buffer = SD_BUS_ERROR_NULL; |
ebcf1f97 | 362 | AsyncPolkitQuery *q = userdata; |
40ca29a1 LP |
363 | int r; |
364 | ||
40ca29a1 LP |
365 | assert(reply); |
366 | assert(q); | |
367 | ||
19befb2d | 368 | q->slot = sd_bus_slot_unref(q->slot); |
40ca29a1 | 369 | q->reply = sd_bus_message_ref(reply); |
40ca29a1 | 370 | |
ebcf1f97 LP |
371 | r = sd_bus_message_rewind(q->request, true); |
372 | if (r < 0) { | |
373 | r = sd_bus_reply_method_errno(q->request, r, NULL); | |
374 | goto finish; | |
375 | } | |
40ca29a1 | 376 | |
19070062 | 377 | r = q->callback(q->request, q->userdata, &error_buffer); |
ebcf1f97 | 378 | r = bus_maybe_reply_error(q->request, r, &error_buffer); |
40ca29a1 | 379 | |
ebcf1f97 | 380 | finish: |
19befb2d LP |
381 | async_polkit_query_free(q); |
382 | ||
ebcf1f97 | 383 | return r; |
40ca29a1 LP |
384 | } |
385 | ||
386 | #endif | |
387 | ||
388 | int bus_verify_polkit_async( | |
f3885791 | 389 | sd_bus_message *call, |
def9a7aa | 390 | int capability, |
40ca29a1 | 391 | const char *action, |
403ed0e5 | 392 | const char **details, |
40ca29a1 | 393 | bool interactive, |
c529695e | 394 | uid_t good_user, |
f3885791 LP |
395 | Hashmap **registry, |
396 | sd_bus_error *error) { | |
40ca29a1 LP |
397 | |
398 | #ifdef ENABLE_POLKIT | |
4afd3348 | 399 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *pk = NULL; |
40ca29a1 | 400 | AsyncPolkitQuery *q; |
403ed0e5 | 401 | const char *sender, **k, **v; |
f3885791 LP |
402 | sd_bus_message_handler_t callback; |
403 | void *userdata; | |
b911eb15 | 404 | int c; |
5b12334d | 405 | #endif |
40ca29a1 LP |
406 | int r; |
407 | ||
f3885791 | 408 | assert(call); |
40ca29a1 | 409 | assert(action); |
f3885791 | 410 | assert(registry); |
40ca29a1 | 411 | |
c529695e LP |
412 | r = check_good_user(call, good_user); |
413 | if (r != 0) | |
414 | return r; | |
415 | ||
40ca29a1 | 416 | #ifdef ENABLE_POLKIT |
f3885791 | 417 | q = hashmap_get(*registry, call); |
40ca29a1 | 418 | if (q) { |
102d8f81 | 419 | int authorized, challenge; |
40ca29a1 LP |
420 | |
421 | /* This is the second invocation of this function, and | |
422 | * there's already a response from polkit, let's | |
423 | * process it */ | |
424 | assert(q->reply); | |
425 | ||
426 | if (sd_bus_message_is_method_error(q->reply, NULL)) { | |
427 | const sd_bus_error *e; | |
428 | ||
ebcf1f97 | 429 | /* Copy error from polkit reply */ |
40ca29a1 LP |
430 | e = sd_bus_message_get_error(q->reply); |
431 | sd_bus_error_copy(error, e); | |
40ca29a1 | 432 | |
ebcf1f97 LP |
433 | /* Treat no PK available as access denied */ |
434 | if (sd_bus_error_has_name(e, SD_BUS_ERROR_SERVICE_UNKNOWN)) | |
435 | return -EACCES; | |
436 | ||
5958d089 | 437 | return -sd_bus_error_get_errno(e); |
40ca29a1 LP |
438 | } |
439 | ||
440 | r = sd_bus_message_enter_container(q->reply, 'r', "bba{ss}"); | |
441 | if (r >= 0) | |
442 | r = sd_bus_message_read(q->reply, "bb", &authorized, &challenge); | |
443 | ||
40ca29a1 LP |
444 | if (r < 0) |
445 | return r; | |
446 | ||
447 | if (authorized) | |
448 | return 1; | |
449 | ||
f2288cc6 LP |
450 | if (challenge) |
451 | return sd_bus_error_set(error, SD_BUS_ERROR_INTERACTIVE_AUTHORIZATION_REQUIRED, "Interactive authentication required."); | |
452 | ||
40ca29a1 LP |
453 | return -EACCES; |
454 | } | |
455 | #endif | |
456 | ||
f3885791 | 457 | r = sd_bus_query_sender_privilege(call, capability); |
5b12334d LP |
458 | if (r < 0) |
459 | return r; | |
f3885791 | 460 | else if (r > 0) |
40ca29a1 | 461 | return 1; |
5b12334d | 462 | |
40ca29a1 | 463 | #ifdef ENABLE_POLKIT |
f3885791 LP |
464 | if (sd_bus_get_current_message(call->bus) != call) |
465 | return -EINVAL; | |
466 | ||
467 | callback = sd_bus_get_current_handler(call->bus); | |
468 | if (!callback) | |
469 | return -EINVAL; | |
470 | ||
471 | userdata = sd_bus_get_current_userdata(call->bus); | |
472 | ||
473 | sender = sd_bus_message_get_sender(call); | |
5b12334d LP |
474 | if (!sender) |
475 | return -EBADMSG; | |
40ca29a1 | 476 | |
b911eb15 LP |
477 | c = sd_bus_message_get_allow_interactive_authorization(call); |
478 | if (c < 0) | |
479 | return c; | |
480 | if (c > 0) | |
481 | interactive = true; | |
482 | ||
d5099efc | 483 | r = hashmap_ensure_allocated(registry, NULL); |
40ca29a1 LP |
484 | if (r < 0) |
485 | return r; | |
486 | ||
487 | r = sd_bus_message_new_method_call( | |
f3885791 | 488 | call->bus, |
151b9b96 | 489 | &pk, |
40ca29a1 LP |
490 | "org.freedesktop.PolicyKit1", |
491 | "/org/freedesktop/PolicyKit1/Authority", | |
492 | "org.freedesktop.PolicyKit1.Authority", | |
151b9b96 | 493 | "CheckAuthorization"); |
40ca29a1 LP |
494 | if (r < 0) |
495 | return r; | |
496 | ||
497 | r = sd_bus_message_append( | |
498 | pk, | |
403ed0e5 | 499 | "(sa{sv})s", |
40ca29a1 | 500 | "system-bus-name", 1, "name", "s", sender, |
403ed0e5 MC |
501 | action); |
502 | if (r < 0) | |
503 | return r; | |
504 | ||
505 | r = sd_bus_message_open_container(pk, 'a', "{ss}"); | |
506 | if (r < 0) | |
507 | return r; | |
508 | ||
509 | STRV_FOREACH_PAIR(k, v, details) { | |
510 | r = sd_bus_message_append(pk, "{ss}", *k, *v); | |
511 | if (r < 0) | |
512 | return r; | |
513 | } | |
514 | ||
515 | r = sd_bus_message_close_container(pk); | |
516 | if (r < 0) | |
517 | return r; | |
518 | ||
519 | r = sd_bus_message_append(pk, "us", !!interactive, NULL); | |
40ca29a1 LP |
520 | if (r < 0) |
521 | return r; | |
522 | ||
523 | q = new0(AsyncPolkitQuery, 1); | |
524 | if (!q) | |
525 | return -ENOMEM; | |
526 | ||
f3885791 | 527 | q->request = sd_bus_message_ref(call); |
40ca29a1 LP |
528 | q->callback = callback; |
529 | q->userdata = userdata; | |
530 | ||
f3885791 | 531 | r = hashmap_put(*registry, call, q); |
40ca29a1 | 532 | if (r < 0) { |
19befb2d | 533 | async_polkit_query_free(q); |
40ca29a1 LP |
534 | return r; |
535 | } | |
536 | ||
ebcf1f97 LP |
537 | q->registry = *registry; |
538 | ||
f3885791 | 539 | r = sd_bus_call_async(call->bus, &q->slot, pk, async_polkit_callback, q, 0); |
ebcf1f97 | 540 | if (r < 0) { |
19befb2d | 541 | async_polkit_query_free(q); |
40ca29a1 | 542 | return r; |
ebcf1f97 | 543 | } |
40ca29a1 LP |
544 | |
545 | return 0; | |
546 | #endif | |
547 | ||
548 | return -EACCES; | |
549 | } | |
550 | ||
36e34057 | 551 | void bus_verify_polkit_async_registry_free(Hashmap *registry) { |
40ca29a1 LP |
552 | #ifdef ENABLE_POLKIT |
553 | AsyncPolkitQuery *q; | |
554 | ||
555 | while ((q = hashmap_steal_first(registry))) | |
19befb2d | 556 | async_polkit_query_free(q); |
40ca29a1 LP |
557 | |
558 | hashmap_free(registry); | |
559 | #endif | |
560 | } | |
0c842e0a | 561 | |
718db961 | 562 | int bus_check_peercred(sd_bus *c) { |
0c842e0a TG |
563 | struct ucred ucred; |
564 | socklen_t l; | |
0f8bd8de | 565 | int fd; |
0c842e0a TG |
566 | |
567 | assert(c); | |
568 | ||
569 | fd = sd_bus_get_fd(c); | |
0f8bd8de LP |
570 | if (fd < 0) |
571 | return fd; | |
0c842e0a TG |
572 | |
573 | l = sizeof(struct ucred); | |
0f8bd8de | 574 | if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &ucred, &l) < 0) |
0c842e0a | 575 | return -errno; |
0c842e0a | 576 | |
0f8bd8de | 577 | if (l != sizeof(struct ucred)) |
0c842e0a | 578 | return -E2BIG; |
0c842e0a TG |
579 | |
580 | if (ucred.uid != 0 && ucred.uid != geteuid()) | |
581 | return -EPERM; | |
582 | ||
583 | return 1; | |
584 | } | |
585 | ||
266f3e26 | 586 | int bus_connect_system_systemd(sd_bus **_bus) { |
4afd3348 | 587 | _cleanup_(sd_bus_unrefp) sd_bus *bus = NULL; |
0c842e0a | 588 | int r; |
0c842e0a TG |
589 | |
590 | assert(_bus); | |
591 | ||
0f8bd8de | 592 | if (geteuid() != 0) |
266f3e26 | 593 | return sd_bus_default_system(_bus); |
a1da8583 | 594 | |
a6aa8912 LP |
595 | /* If we are root and kdbus is not available, then let's talk |
596 | * directly to the system instance, instead of going via the | |
597 | * bus */ | |
a1da8583 | 598 | |
0f8bd8de LP |
599 | r = sd_bus_new(&bus); |
600 | if (r < 0) | |
601 | return r; | |
a1da8583 | 602 | |
e3afaf6b | 603 | r = sd_bus_set_address(bus, KERNEL_SYSTEM_BUS_ADDRESS); |
0f8bd8de LP |
604 | if (r < 0) |
605 | return r; | |
a1da8583 | 606 | |
a6aa8912 LP |
607 | bus->bus_client = true; |
608 | ||
0f8bd8de | 609 | r = sd_bus_start(bus); |
a6aa8912 LP |
610 | if (r >= 0) { |
611 | *_bus = bus; | |
612 | bus = NULL; | |
613 | return 0; | |
614 | } | |
615 | ||
616 | bus = sd_bus_unref(bus); | |
a6aa8912 LP |
617 | |
618 | r = sd_bus_new(&bus); | |
0f8bd8de LP |
619 | if (r < 0) |
620 | return r; | |
a1da8583 | 621 | |
a6aa8912 LP |
622 | r = sd_bus_set_address(bus, "unix:path=/run/systemd/private"); |
623 | if (r < 0) | |
624 | return r; | |
625 | ||
626 | r = sd_bus_start(bus); | |
627 | if (r < 0) | |
266f3e26 | 628 | return sd_bus_default_system(_bus); |
a6aa8912 | 629 | |
0f8bd8de | 630 | r = bus_check_peercred(bus); |
a1da8583 TG |
631 | if (r < 0) |
632 | return r; | |
633 | ||
634 | *_bus = bus; | |
0f8bd8de LP |
635 | bus = NULL; |
636 | ||
a1da8583 TG |
637 | return 0; |
638 | } | |
639 | ||
266f3e26 | 640 | int bus_connect_user_systemd(sd_bus **_bus) { |
4afd3348 | 641 | _cleanup_(sd_bus_unrefp) sd_bus *bus = NULL; |
a6aa8912 | 642 | _cleanup_free_ char *ee = NULL; |
41dd15e4 LP |
643 | const char *e; |
644 | int r; | |
645 | ||
a6aa8912 | 646 | /* Try via kdbus first, and then directly */ |
41dd15e4 LP |
647 | |
648 | assert(_bus); | |
649 | ||
a6aa8912 LP |
650 | r = sd_bus_new(&bus); |
651 | if (r < 0) | |
652 | return r; | |
653 | ||
e3afaf6b | 654 | if (asprintf(&bus->address, KERNEL_USER_BUS_ADDRESS_FMT, getuid()) < 0) |
a6aa8912 LP |
655 | return -ENOMEM; |
656 | ||
657 | bus->bus_client = true; | |
658 | ||
659 | r = sd_bus_start(bus); | |
660 | if (r >= 0) { | |
661 | *_bus = bus; | |
662 | bus = NULL; | |
663 | return 0; | |
664 | } | |
665 | ||
666 | bus = sd_bus_unref(bus); | |
a6aa8912 | 667 | |
41dd15e4 | 668 | e = secure_getenv("XDG_RUNTIME_DIR"); |
537220d9 | 669 | if (!e) |
266f3e26 | 670 | return sd_bus_default_user(_bus); |
537220d9 | 671 | |
a6aa8912 LP |
672 | ee = bus_address_escape(e); |
673 | if (!ee) | |
537220d9 | 674 | return -ENOMEM; |
41dd15e4 LP |
675 | |
676 | r = sd_bus_new(&bus); | |
677 | if (r < 0) | |
678 | return r; | |
679 | ||
605405c6 | 680 | bus->address = strjoin("unix:path=", ee, "/systemd/private"); |
a6aa8912 LP |
681 | if (!bus->address) |
682 | return -ENOMEM; | |
41dd15e4 LP |
683 | |
684 | r = sd_bus_start(bus); | |
685 | if (r < 0) | |
266f3e26 | 686 | return sd_bus_default_user(_bus); |
41dd15e4 LP |
687 | |
688 | r = bus_check_peercred(bus); | |
689 | if (r < 0) | |
690 | return r; | |
691 | ||
692 | *_bus = bus; | |
693 | bus = NULL; | |
694 | ||
695 | return 0; | |
696 | } | |
697 | ||
4f9a9105 ZJS |
698 | #define print_property(name, fmt, ...) \ |
699 | do { \ | |
700 | if (value) \ | |
701 | printf(fmt "\n", __VA_ARGS__); \ | |
702 | else \ | |
703 | printf("%s=" fmt "\n", name, __VA_ARGS__); \ | |
704 | } while(0) | |
705 | ||
706 | int bus_print_property(const char *name, sd_bus_message *property, bool value, bool all) { | |
a1da8583 TG |
707 | char type; |
708 | const char *contents; | |
9f6eb1cd | 709 | int r; |
a1da8583 TG |
710 | |
711 | assert(name); | |
712 | assert(property); | |
713 | ||
9f6eb1cd KS |
714 | r = sd_bus_message_peek_type(property, &type, &contents); |
715 | if (r < 0) | |
716 | return r; | |
a1da8583 TG |
717 | |
718 | switch (type) { | |
719 | ||
720 | case SD_BUS_TYPE_STRING: { | |
721 | const char *s; | |
9f6eb1cd KS |
722 | |
723 | r = sd_bus_message_read_basic(property, type, &s); | |
724 | if (r < 0) | |
725 | return r; | |
a1da8583 | 726 | |
27e9c5af LP |
727 | if (all || !isempty(s)) { |
728 | _cleanup_free_ char *escaped = NULL; | |
729 | ||
730 | escaped = xescape(s, "\n"); | |
731 | if (!escaped) | |
732 | return -ENOMEM; | |
733 | ||
4f9a9105 | 734 | print_property(name, "%s", escaped); |
27e9c5af | 735 | } |
a1da8583 TG |
736 | |
737 | return 1; | |
738 | } | |
739 | ||
740 | case SD_BUS_TYPE_BOOLEAN: { | |
c2fa048c | 741 | int b; |
a1da8583 | 742 | |
9f6eb1cd KS |
743 | r = sd_bus_message_read_basic(property, type, &b); |
744 | if (r < 0) | |
745 | return r; | |
746 | ||
4f9a9105 | 747 | print_property(name, "%s", yes_no(b)); |
a1da8583 TG |
748 | |
749 | return 1; | |
750 | } | |
751 | ||
752 | case SD_BUS_TYPE_UINT64: { | |
753 | uint64_t u; | |
754 | ||
9f6eb1cd KS |
755 | r = sd_bus_message_read_basic(property, type, &u); |
756 | if (r < 0) | |
757 | return r; | |
a1da8583 TG |
758 | |
759 | /* Yes, heuristics! But we can change this check | |
760 | * should it turn out to not be sufficient */ | |
761 | ||
762 | if (endswith(name, "Timestamp")) { | |
763 | char timestamp[FORMAT_TIMESTAMP_MAX], *t; | |
764 | ||
765 | t = format_timestamp(timestamp, sizeof(timestamp), u); | |
766 | if (t || all) | |
4f9a9105 | 767 | print_property(name, "%s", strempty(t)); |
a1da8583 TG |
768 | |
769 | } else if (strstr(name, "USec")) { | |
770 | char timespan[FORMAT_TIMESPAN_MAX]; | |
771 | ||
4f9a9105 | 772 | print_property(name, "%s", format_timespan(timespan, sizeof(timespan), u, 0)); |
73186d53 DH |
773 | } else if (streq(name, "RestrictNamespaces")) { |
774 | _cleanup_free_ char *s = NULL; | |
775 | const char *result = NULL; | |
776 | ||
777 | if ((u & NAMESPACE_FLAGS_ALL) == 0) | |
778 | result = "yes"; | |
779 | else if ((u & NAMESPACE_FLAGS_ALL) == NAMESPACE_FLAGS_ALL) | |
780 | result = "no"; | |
781 | else { | |
782 | r = namespace_flag_to_string_many(u, &s); | |
783 | if (r < 0) | |
784 | return r; | |
785 | ||
786 | result = s; | |
787 | } | |
788 | ||
789 | print_property(name, "%s", result); | |
a1da8583 | 790 | } else |
4f9a9105 | 791 | print_property(name, "%"PRIu64, u); |
a1da8583 TG |
792 | |
793 | return 1; | |
794 | } | |
795 | ||
d7161865 DM |
796 | case SD_BUS_TYPE_INT64: { |
797 | int64_t i; | |
798 | ||
799 | r = sd_bus_message_read_basic(property, type, &i); | |
800 | if (r < 0) | |
801 | return r; | |
802 | ||
4f9a9105 | 803 | print_property(name, "%"PRIi64, i); |
d7161865 DM |
804 | |
805 | return 1; | |
806 | } | |
807 | ||
a1da8583 TG |
808 | case SD_BUS_TYPE_UINT32: { |
809 | uint32_t u; | |
810 | ||
9f6eb1cd KS |
811 | r = sd_bus_message_read_basic(property, type, &u); |
812 | if (r < 0) | |
813 | return r; | |
a1da8583 TG |
814 | |
815 | if (strstr(name, "UMask") || strstr(name, "Mode")) | |
4f9a9105 | 816 | print_property(name, "%04o", u); |
a1da8583 | 817 | else |
4f9a9105 | 818 | print_property(name, "%"PRIu32, u); |
a1da8583 TG |
819 | |
820 | return 1; | |
821 | } | |
822 | ||
823 | case SD_BUS_TYPE_INT32: { | |
824 | int32_t i; | |
825 | ||
9f6eb1cd KS |
826 | r = sd_bus_message_read_basic(property, type, &i); |
827 | if (r < 0) | |
828 | return r; | |
a1da8583 | 829 | |
4f9a9105 | 830 | print_property(name, "%"PRIi32, i); |
a1da8583 TG |
831 | return 1; |
832 | } | |
833 | ||
834 | case SD_BUS_TYPE_DOUBLE: { | |
835 | double d; | |
836 | ||
9f6eb1cd KS |
837 | r = sd_bus_message_read_basic(property, type, &d); |
838 | if (r < 0) | |
839 | return r; | |
a1da8583 | 840 | |
4f9a9105 | 841 | print_property(name, "%g", d); |
a1da8583 TG |
842 | return 1; |
843 | } | |
844 | ||
845 | case SD_BUS_TYPE_ARRAY: | |
a1da8583 | 846 | if (streq(contents, "s")) { |
261afec5 MAP |
847 | bool first = true; |
848 | const char *str; | |
a1da8583 | 849 | |
9f6eb1cd KS |
850 | r = sd_bus_message_enter_container(property, SD_BUS_TYPE_ARRAY, contents); |
851 | if (r < 0) | |
852 | return r; | |
853 | ||
9ed794a3 | 854 | while ((r = sd_bus_message_read_basic(property, SD_BUS_TYPE_STRING, &str)) > 0) { |
27e9c5af LP |
855 | _cleanup_free_ char *escaped = NULL; |
856 | ||
4f9a9105 | 857 | if (first && !value) |
261afec5 MAP |
858 | printf("%s=", name); |
859 | ||
27e9c5af LP |
860 | escaped = xescape(str, "\n "); |
861 | if (!escaped) | |
862 | return -ENOMEM; | |
863 | ||
864 | printf("%s%s", first ? "" : " ", escaped); | |
261afec5 MAP |
865 | |
866 | first = false; | |
867 | } | |
9f6eb1cd KS |
868 | if (r < 0) |
869 | return r; | |
a1da8583 | 870 | |
4f9a9105 | 871 | if (first && all && !value) |
a1da8583 | 872 | printf("%s=", name); |
261afec5 | 873 | if (!first || all) |
a1da8583 | 874 | puts(""); |
a1da8583 | 875 | |
9f6eb1cd KS |
876 | r = sd_bus_message_exit_container(property); |
877 | if (r < 0) | |
878 | return r; | |
a1da8583 TG |
879 | |
880 | return 1; | |
881 | ||
882 | } else if (streq(contents, "y")) { | |
883 | const uint8_t *u; | |
884 | size_t n; | |
885 | ||
9f6eb1cd KS |
886 | r = sd_bus_message_read_array(property, SD_BUS_TYPE_BYTE, (const void**) &u, &n); |
887 | if (r < 0) | |
888 | return r; | |
889 | ||
a1da8583 TG |
890 | if (all || n > 0) { |
891 | unsigned int i; | |
892 | ||
4f9a9105 ZJS |
893 | if (!value) |
894 | printf("%s=", name); | |
a1da8583 TG |
895 | |
896 | for (i = 0; i < n; i++) | |
897 | printf("%02x", u[i]); | |
898 | ||
899 | puts(""); | |
900 | } | |
901 | ||
902 | return 1; | |
903 | ||
904 | } else if (streq(contents, "u")) { | |
905 | uint32_t *u; | |
906 | size_t n; | |
907 | ||
9f6eb1cd KS |
908 | r = sd_bus_message_read_array(property, SD_BUS_TYPE_UINT32, (const void**) &u, &n); |
909 | if (r < 0) | |
910 | return r; | |
911 | ||
a1da8583 TG |
912 | if (all || n > 0) { |
913 | unsigned int i; | |
914 | ||
4f9a9105 ZJS |
915 | if (!value) |
916 | printf("%s=", name); | |
a1da8583 TG |
917 | |
918 | for (i = 0; i < n; i++) | |
919 | printf("%08x", u[i]); | |
920 | ||
921 | puts(""); | |
922 | } | |
923 | ||
924 | return 1; | |
925 | } | |
926 | ||
927 | break; | |
928 | } | |
929 | ||
930 | return 0; | |
931 | } | |
d21ed1ea | 932 | |
85500523 | 933 | int bus_print_all_properties(sd_bus *bus, const char *dest, const char *path, char **filter, bool value, bool all) { |
4afd3348 LP |
934 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; |
935 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
ffc06c35 KS |
936 | int r; |
937 | ||
9f6eb1cd KS |
938 | assert(bus); |
939 | assert(path); | |
940 | ||
941 | r = sd_bus_call_method(bus, | |
27e72d6b | 942 | dest, |
ffc06c35 KS |
943 | path, |
944 | "org.freedesktop.DBus.Properties", | |
945 | "GetAll", | |
946 | &error, | |
9f6eb1cd | 947 | &reply, |
ffc06c35 | 948 | "s", ""); |
9f6eb1cd | 949 | if (r < 0) |
ffc06c35 | 950 | return r; |
ffc06c35 | 951 | |
9f6eb1cd | 952 | r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "{sv}"); |
ffc06c35 KS |
953 | if (r < 0) |
954 | return r; | |
955 | ||
9f6eb1cd | 956 | while ((r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) { |
ffc06c35 | 957 | const char *name; |
ffc06c35 | 958 | const char *contents; |
ffc06c35 | 959 | |
9f6eb1cd | 960 | r = sd_bus_message_read_basic(reply, SD_BUS_TYPE_STRING, &name); |
ffc06c35 KS |
961 | if (r < 0) |
962 | return r; | |
963 | ||
9f6eb1cd KS |
964 | if (!filter || strv_find(filter, name)) { |
965 | r = sd_bus_message_peek_type(reply, NULL, &contents); | |
966 | if (r < 0) | |
967 | return r; | |
968 | ||
969 | r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_VARIANT, contents); | |
970 | if (r < 0) | |
971 | return r; | |
ffc06c35 | 972 | |
85500523 | 973 | r = bus_print_property(name, reply, value, all); |
9f6eb1cd KS |
974 | if (r < 0) |
975 | return r; | |
27e72d6b SP |
976 | if (r == 0) { |
977 | if (all) | |
978 | printf("%s=[unprintable]\n", name); | |
979 | /* skip what we didn't read */ | |
980 | r = sd_bus_message_skip(reply, contents); | |
981 | if (r < 0) | |
982 | return r; | |
983 | } | |
9f6eb1cd KS |
984 | |
985 | r = sd_bus_message_exit_container(reply); | |
986 | if (r < 0) | |
987 | return r; | |
988 | } else { | |
989 | r = sd_bus_message_skip(reply, "v"); | |
990 | if (r < 0) | |
991 | return r; | |
992 | } | |
993 | ||
994 | r = sd_bus_message_exit_container(reply); | |
ffc06c35 KS |
995 | if (r < 0) |
996 | return r; | |
9f6eb1cd KS |
997 | } |
998 | if (r < 0) | |
999 | return r; | |
ffc06c35 | 1000 | |
9f6eb1cd KS |
1001 | r = sd_bus_message_exit_container(reply); |
1002 | if (r < 0) | |
1003 | return r; | |
ffc06c35 | 1004 | |
9f6eb1cd KS |
1005 | return 0; |
1006 | } | |
ffc06c35 | 1007 | |
9f6eb1cd KS |
1008 | int bus_map_id128(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) { |
1009 | sd_id128_t *p = userdata; | |
1010 | const void *v; | |
1011 | size_t n; | |
1012 | int r; | |
ffc06c35 | 1013 | |
9f6eb1cd KS |
1014 | r = sd_bus_message_read_array(m, SD_BUS_TYPE_BYTE, &v, &n); |
1015 | if (r < 0) | |
1016 | return r; | |
ffc06c35 | 1017 | |
9f6eb1cd KS |
1018 | if (n == 0) |
1019 | *p = SD_ID128_NULL; | |
1020 | else if (n == 16) | |
1021 | memcpy((*p).bytes, v, n); | |
1022 | else | |
1023 | return -EINVAL; | |
ffc06c35 | 1024 | |
9f6eb1cd KS |
1025 | return 0; |
1026 | } | |
ffc06c35 | 1027 | |
9f6eb1cd KS |
1028 | static int map_basic(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) { |
1029 | char type; | |
1030 | int r; | |
ffc06c35 | 1031 | |
9f6eb1cd KS |
1032 | r = sd_bus_message_peek_type(m, &type, NULL); |
1033 | if (r < 0) | |
1034 | return r; | |
ffc06c35 | 1035 | |
9f6eb1cd | 1036 | switch (type) { |
8b3b6f58 | 1037 | |
9f6eb1cd | 1038 | case SD_BUS_TYPE_STRING: { |
9f6eb1cd | 1039 | char **p = userdata; |
8b3b6f58 | 1040 | const char *s; |
ffc06c35 | 1041 | |
9f6eb1cd KS |
1042 | r = sd_bus_message_read_basic(m, type, &s); |
1043 | if (r < 0) | |
8b3b6f58 | 1044 | return r; |
ffc06c35 | 1045 | |
9f6eb1cd | 1046 | if (isempty(s)) |
0b83b8a4 | 1047 | s = NULL; |
ffc06c35 | 1048 | |
8b3b6f58 | 1049 | return free_and_strdup(p, s); |
9f6eb1cd | 1050 | } |
ffc06c35 | 1051 | |
9f6eb1cd | 1052 | case SD_BUS_TYPE_ARRAY: { |
7d6884b6 TA |
1053 | _cleanup_strv_free_ char **l = NULL; |
1054 | char ***p = userdata; | |
ffc06c35 | 1055 | |
9f6eb1cd KS |
1056 | r = bus_message_read_strv_extend(m, &l); |
1057 | if (r < 0) | |
8b3b6f58 | 1058 | return r; |
ffc06c35 | 1059 | |
9f6eb1cd KS |
1060 | strv_free(*p); |
1061 | *p = l; | |
1062 | l = NULL; | |
8b3b6f58 | 1063 | return 0; |
9f6eb1cd | 1064 | } |
ffc06c35 | 1065 | |
9f6eb1cd KS |
1066 | case SD_BUS_TYPE_BOOLEAN: { |
1067 | unsigned b; | |
43dcc86a | 1068 | int *p = userdata; |
ffc06c35 | 1069 | |
9f6eb1cd KS |
1070 | r = sd_bus_message_read_basic(m, type, &b); |
1071 | if (r < 0) | |
8b3b6f58 | 1072 | return r; |
ffc06c35 | 1073 | |
9f6eb1cd | 1074 | *p = b; |
8b3b6f58 | 1075 | return 0; |
9f6eb1cd | 1076 | } |
ffc06c35 | 1077 | |
bdf97b8a | 1078 | case SD_BUS_TYPE_INT32: |
9f6eb1cd | 1079 | case SD_BUS_TYPE_UINT32: { |
bdf97b8a | 1080 | uint32_t u, *p = userdata; |
9f6eb1cd KS |
1081 | |
1082 | r = sd_bus_message_read_basic(m, type, &u); | |
1083 | if (r < 0) | |
8b3b6f58 | 1084 | return r; |
ffc06c35 | 1085 | |
9f6eb1cd | 1086 | *p = u; |
8b3b6f58 | 1087 | return 0; |
9f6eb1cd KS |
1088 | } |
1089 | ||
bdf97b8a | 1090 | case SD_BUS_TYPE_INT64: |
9f6eb1cd | 1091 | case SD_BUS_TYPE_UINT64: { |
bdf97b8a | 1092 | uint64_t t, *p = userdata; |
9f6eb1cd KS |
1093 | |
1094 | r = sd_bus_message_read_basic(m, type, &t); | |
1095 | if (r < 0) | |
8b3b6f58 | 1096 | return r; |
ffc06c35 | 1097 | |
9f6eb1cd | 1098 | *p = t; |
8b3b6f58 | 1099 | return 0; |
9f6eb1cd KS |
1100 | } |
1101 | ||
52e045f9 | 1102 | case SD_BUS_TYPE_DOUBLE: { |
8b3b6f58 | 1103 | double d, *p = userdata; |
52e045f9 SS |
1104 | |
1105 | r = sd_bus_message_read_basic(m, type, &d); | |
1106 | if (r < 0) | |
8b3b6f58 | 1107 | return r; |
52e045f9 SS |
1108 | |
1109 | *p = d; | |
8b3b6f58 LP |
1110 | return 0; |
1111 | }} | |
52e045f9 | 1112 | |
8b3b6f58 | 1113 | return -EOPNOTSUPP; |
9f6eb1cd KS |
1114 | } |
1115 | ||
fe506d56 LP |
1116 | int bus_message_map_all_properties( |
1117 | sd_bus_message *m, | |
1118 | const struct bus_properties_map *map, | |
1119 | void *userdata) { | |
1120 | ||
4afd3348 | 1121 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; |
9f6eb1cd KS |
1122 | int r; |
1123 | ||
aae2b488 | 1124 | assert(m); |
9f6eb1cd KS |
1125 | assert(map); |
1126 | ||
9f6eb1cd KS |
1127 | r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "{sv}"); |
1128 | if (r < 0) | |
1129 | return r; | |
1130 | ||
1131 | while ((r = sd_bus_message_enter_container(m, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) { | |
1132 | const struct bus_properties_map *prop; | |
1133 | const char *member; | |
1134 | const char *contents; | |
1135 | void *v; | |
1136 | unsigned i; | |
1137 | ||
1138 | r = sd_bus_message_read_basic(m, SD_BUS_TYPE_STRING, &member); | |
ffc06c35 KS |
1139 | if (r < 0) |
1140 | return r; | |
1141 | ||
9f6eb1cd KS |
1142 | for (i = 0, prop = NULL; map[i].member; i++) |
1143 | if (streq(map[i].member, member)) { | |
1144 | prop = &map[i]; | |
1145 | break; | |
1146 | } | |
1147 | ||
1148 | if (prop) { | |
1149 | r = sd_bus_message_peek_type(m, NULL, &contents); | |
1150 | if (r < 0) | |
1151 | return r; | |
1152 | ||
1153 | r = sd_bus_message_enter_container(m, SD_BUS_TYPE_VARIANT, contents); | |
1154 | if (r < 0) | |
1155 | return r; | |
1156 | ||
1157 | v = (uint8_t *)userdata + prop->offset; | |
27e72d6b | 1158 | if (map[i].set) |
fe506d56 | 1159 | r = prop->set(sd_bus_message_get_bus(m), member, m, &error, v); |
9f6eb1cd | 1160 | else |
fe506d56 | 1161 | r = map_basic(sd_bus_message_get_bus(m), member, m, &error, v); |
2b49a470 TA |
1162 | if (r < 0) |
1163 | return r; | |
9f6eb1cd KS |
1164 | |
1165 | r = sd_bus_message_exit_container(m); | |
1166 | if (r < 0) | |
1167 | return r; | |
1168 | } else { | |
1169 | r = sd_bus_message_skip(m, "v"); | |
1170 | if (r < 0) | |
6c1508b8 | 1171 | return r; |
9f6eb1cd KS |
1172 | } |
1173 | ||
ffc06c35 KS |
1174 | r = sd_bus_message_exit_container(m); |
1175 | if (r < 0) | |
1176 | return r; | |
1177 | } | |
fe506d56 LP |
1178 | if (r < 0) |
1179 | return r; | |
ffc06c35 | 1180 | |
aae2b488 DH |
1181 | return sd_bus_message_exit_container(m); |
1182 | } | |
1183 | ||
fe506d56 LP |
1184 | int bus_message_map_properties_changed( |
1185 | sd_bus_message *m, | |
1186 | const struct bus_properties_map *map, | |
1187 | void *userdata) { | |
1188 | ||
aae2b488 DH |
1189 | const char *member; |
1190 | int r, invalidated, i; | |
1191 | ||
aae2b488 DH |
1192 | assert(m); |
1193 | assert(map); | |
1194 | ||
fe506d56 | 1195 | r = bus_message_map_all_properties(m, map, userdata); |
aae2b488 DH |
1196 | if (r < 0) |
1197 | return r; | |
1198 | ||
1199 | r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "s"); | |
1200 | if (r < 0) | |
1201 | return r; | |
1202 | ||
1203 | invalidated = 0; | |
1204 | while ((r = sd_bus_message_read_basic(m, SD_BUS_TYPE_STRING, &member)) > 0) | |
1205 | for (i = 0; map[i].member; i++) | |
1206 | if (streq(map[i].member, member)) { | |
1207 | ++invalidated; | |
1208 | break; | |
1209 | } | |
fe506d56 LP |
1210 | if (r < 0) |
1211 | return r; | |
aae2b488 DH |
1212 | |
1213 | r = sd_bus_message_exit_container(m); | |
1214 | if (r < 0) | |
1215 | return r; | |
1216 | ||
1217 | return invalidated; | |
1218 | } | |
1219 | ||
fe506d56 LP |
1220 | int bus_map_all_properties( |
1221 | sd_bus *bus, | |
1222 | const char *destination, | |
1223 | const char *path, | |
1224 | const struct bus_properties_map *map, | |
1225 | void *userdata) { | |
1226 | ||
4afd3348 LP |
1227 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; |
1228 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
aae2b488 DH |
1229 | int r; |
1230 | ||
1231 | assert(bus); | |
1232 | assert(destination); | |
1233 | assert(path); | |
1234 | assert(map); | |
1235 | ||
1236 | r = sd_bus_call_method( | |
1237 | bus, | |
1238 | destination, | |
1239 | path, | |
1240 | "org.freedesktop.DBus.Properties", | |
1241 | "GetAll", | |
1242 | &error, | |
1243 | &m, | |
1244 | "s", ""); | |
1245 | if (r < 0) | |
1246 | return r; | |
1247 | ||
fe506d56 | 1248 | return bus_message_map_all_properties(m, map, userdata); |
ffc06c35 KS |
1249 | } |
1250 | ||
38303498 LP |
1251 | int bus_connect_transport(BusTransport transport, const char *host, bool user, sd_bus **ret) { |
1252 | _cleanup_(sd_bus_unrefp) sd_bus *bus = NULL; | |
d21ed1ea LP |
1253 | int r; |
1254 | ||
1255 | assert(transport >= 0); | |
1256 | assert(transport < _BUS_TRANSPORT_MAX); | |
38303498 | 1257 | assert(ret); |
d21ed1ea LP |
1258 | |
1259 | assert_return((transport == BUS_TRANSPORT_LOCAL) == !host, -EINVAL); | |
15411c0c | 1260 | assert_return(transport == BUS_TRANSPORT_LOCAL || !user, -EOPNOTSUPP); |
d21ed1ea LP |
1261 | |
1262 | switch (transport) { | |
1263 | ||
1264 | case BUS_TRANSPORT_LOCAL: | |
1265 | if (user) | |
38303498 | 1266 | r = sd_bus_default_user(&bus); |
d21ed1ea | 1267 | else |
38303498 | 1268 | r = sd_bus_default_system(&bus); |
d21ed1ea LP |
1269 | |
1270 | break; | |
1271 | ||
1272 | case BUS_TRANSPORT_REMOTE: | |
38303498 | 1273 | r = sd_bus_open_system_remote(&bus, host); |
41dd15e4 LP |
1274 | break; |
1275 | ||
de33fc62 | 1276 | case BUS_TRANSPORT_MACHINE: |
38303498 | 1277 | r = sd_bus_open_system_machine(&bus, host); |
41dd15e4 LP |
1278 | break; |
1279 | ||
1280 | default: | |
1281 | assert_not_reached("Hmm, unknown transport type."); | |
1282 | } | |
38303498 LP |
1283 | if (r < 0) |
1284 | return r; | |
41dd15e4 | 1285 | |
38303498 LP |
1286 | r = sd_bus_set_exit_on_disconnect(bus, true); |
1287 | if (r < 0) | |
1288 | return r; | |
1289 | ||
1290 | *ret = bus; | |
1291 | bus = NULL; | |
1292 | ||
1293 | return 0; | |
41dd15e4 LP |
1294 | } |
1295 | ||
266f3e26 | 1296 | int bus_connect_transport_systemd(BusTransport transport, const char *host, bool user, sd_bus **bus) { |
41dd15e4 LP |
1297 | int r; |
1298 | ||
1299 | assert(transport >= 0); | |
1300 | assert(transport < _BUS_TRANSPORT_MAX); | |
1301 | assert(bus); | |
1302 | ||
1303 | assert_return((transport == BUS_TRANSPORT_LOCAL) == !host, -EINVAL); | |
15411c0c | 1304 | assert_return(transport == BUS_TRANSPORT_LOCAL || !user, -EOPNOTSUPP); |
41dd15e4 LP |
1305 | |
1306 | switch (transport) { | |
1307 | ||
1308 | case BUS_TRANSPORT_LOCAL: | |
1309 | if (user) | |
266f3e26 | 1310 | r = bus_connect_user_systemd(bus); |
41dd15e4 | 1311 | else |
266f3e26 | 1312 | r = bus_connect_system_systemd(bus); |
41dd15e4 LP |
1313 | |
1314 | break; | |
1315 | ||
1316 | case BUS_TRANSPORT_REMOTE: | |
3db729cb | 1317 | r = sd_bus_open_system_remote(bus, host); |
d21ed1ea LP |
1318 | break; |
1319 | ||
de33fc62 LP |
1320 | case BUS_TRANSPORT_MACHINE: |
1321 | r = sd_bus_open_system_machine(bus, host); | |
d21ed1ea LP |
1322 | break; |
1323 | ||
1324 | default: | |
1325 | assert_not_reached("Hmm, unknown transport type."); | |
1326 | } | |
1327 | ||
1328 | return r; | |
1329 | } | |
e6504030 LP |
1330 | |
1331 | int bus_property_get_bool( | |
1332 | sd_bus *bus, | |
1333 | const char *path, | |
1334 | const char *interface, | |
1335 | const char *property, | |
1336 | sd_bus_message *reply, | |
ebcf1f97 LP |
1337 | void *userdata, |
1338 | sd_bus_error *error) { | |
e6504030 LP |
1339 | |
1340 | int b = *(bool*) userdata; | |
1341 | ||
1342 | return sd_bus_message_append_basic(reply, 'b', &b); | |
1343 | } | |
1344 | ||
766c94ad LP |
1345 | int bus_property_get_id128( |
1346 | sd_bus *bus, | |
1347 | const char *path, | |
1348 | const char *interface, | |
1349 | const char *property, | |
1350 | sd_bus_message *reply, | |
1351 | void *userdata, | |
1352 | sd_bus_error *error) { | |
1353 | ||
1354 | sd_id128_t *id = userdata; | |
1355 | ||
1356 | if (sd_id128_is_null(*id)) /* Add an empty array if the ID is zero */ | |
1357 | return sd_bus_message_append(reply, "ay", 0); | |
1358 | else | |
4b58153d | 1359 | return sd_bus_message_append_array(reply, 'y', id->bytes, 16); |
766c94ad LP |
1360 | } |
1361 | ||
718db961 LP |
1362 | #if __SIZEOF_SIZE_T__ != 8 |
1363 | int bus_property_get_size( | |
e6504030 LP |
1364 | sd_bus *bus, |
1365 | const char *path, | |
1366 | const char *interface, | |
1367 | const char *property, | |
1368 | sd_bus_message *reply, | |
ebcf1f97 LP |
1369 | void *userdata, |
1370 | sd_bus_error *error) { | |
e6504030 | 1371 | |
718db961 | 1372 | uint64_t sz = *(size_t*) userdata; |
e6504030 | 1373 | |
718db961 | 1374 | return sd_bus_message_append_basic(reply, 't', &sz); |
e6504030 | 1375 | } |
718db961 LP |
1376 | #endif |
1377 | ||
1378 | #if __SIZEOF_LONG__ != 8 | |
1379 | int bus_property_get_long( | |
1380 | sd_bus *bus, | |
1381 | const char *path, | |
1382 | const char *interface, | |
1383 | const char *property, | |
1384 | sd_bus_message *reply, | |
ebcf1f97 LP |
1385 | void *userdata, |
1386 | sd_bus_error *error) { | |
718db961 LP |
1387 | |
1388 | int64_t l = *(long*) userdata; | |
1389 | ||
1390 | return sd_bus_message_append_basic(reply, 'x', &l); | |
1391 | } | |
1392 | ||
1393 | int bus_property_get_ulong( | |
1394 | sd_bus *bus, | |
1395 | const char *path, | |
1396 | const char *interface, | |
1397 | const char *property, | |
1398 | sd_bus_message *reply, | |
ebcf1f97 LP |
1399 | void *userdata, |
1400 | sd_bus_error *error) { | |
718db961 LP |
1401 | |
1402 | uint64_t ul = *(unsigned long*) userdata; | |
1403 | ||
1404 | return sd_bus_message_append_basic(reply, 't', &ul); | |
1405 | } | |
1406 | #endif | |
5b30bef8 LP |
1407 | |
1408 | int bus_log_parse_error(int r) { | |
23bbb0de | 1409 | return log_error_errno(r, "Failed to parse bus message: %m"); |
5b30bef8 | 1410 | } |
f459b602 MAP |
1411 | |
1412 | int bus_log_create_error(int r) { | |
23bbb0de | 1413 | return log_error_errno(r, "Failed to create bus message: %m"); |
f459b602 MAP |
1414 | } |
1415 | ||
98a4c30b DH |
1416 | /** |
1417 | * bus_path_encode_unique() - encode unique object path | |
1418 | * @b: bus connection or NULL | |
1419 | * @prefix: object path prefix | |
1420 | * @sender_id: unique-name of client, or NULL | |
1421 | * @external_id: external ID to be chosen by client, or NULL | |
1422 | * @ret_path: storage for encoded object path pointer | |
1423 | * | |
1424 | * Whenever we provide a bus API that allows clients to create and manage | |
1425 | * server-side objects, we need to provide a unique name for these objects. If | |
1426 | * we let the server choose the name, we suffer from a race condition: If a | |
1427 | * client creates an object asynchronously, it cannot destroy that object until | |
1428 | * it received the method reply. It cannot know the name of the new object, | |
1429 | * thus, it cannot destroy it. Furthermore, it enforces a round-trip. | |
1430 | * | |
1431 | * Therefore, many APIs allow the client to choose the unique name for newly | |
1432 | * created objects. There're two problems to solve, though: | |
1433 | * 1) Object names are usually defined via dbus object paths, which are | |
1434 | * usually globally namespaced. Therefore, multiple clients must be able | |
1435 | * to choose unique object names without interference. | |
1436 | * 2) If multiple libraries share the same bus connection, they must be | |
1437 | * able to choose unique object names without interference. | |
1438 | * The first problem is solved easily by prefixing a name with the | |
1439 | * unique-bus-name of a connection. The server side must enforce this and | |
1440 | * reject any other name. The second problem is solved by providing unique | |
1441 | * suffixes from within sd-bus. | |
1442 | * | |
1443 | * This helper allows clients to create unique object-paths. It uses the | |
1444 | * template '/prefix/sender_id/external_id' and returns the new path in | |
1445 | * @ret_path (must be freed by the caller). | |
1446 | * If @sender_id is NULL, the unique-name of @b is used. If @external_id is | |
1447 | * NULL, this function allocates a unique suffix via @b (by requesting a new | |
1448 | * cookie). If both @sender_id and @external_id are given, @b can be passed as | |
1449 | * NULL. | |
1450 | * | |
1451 | * Returns: 0 on success, negative error code on failure. | |
1452 | */ | |
1453 | int bus_path_encode_unique(sd_bus *b, const char *prefix, const char *sender_id, const char *external_id, char **ret_path) { | |
1454 | _cleanup_free_ char *sender_label = NULL, *external_label = NULL; | |
1455 | char external_buf[DECIMAL_STR_MAX(uint64_t)], *p; | |
1456 | int r; | |
1457 | ||
1458 | assert_return(b || (sender_id && external_id), -EINVAL); | |
1459 | assert_return(object_path_is_valid(prefix), -EINVAL); | |
1460 | assert_return(ret_path, -EINVAL); | |
1461 | ||
1462 | if (!sender_id) { | |
1463 | r = sd_bus_get_unique_name(b, &sender_id); | |
1464 | if (r < 0) | |
1465 | return r; | |
1466 | } | |
1467 | ||
1468 | if (!external_id) { | |
1469 | xsprintf(external_buf, "%"PRIu64, ++b->cookie); | |
1470 | external_id = external_buf; | |
1471 | } | |
1472 | ||
1473 | sender_label = bus_label_escape(sender_id); | |
1474 | if (!sender_label) | |
1475 | return -ENOMEM; | |
1476 | ||
1477 | external_label = bus_label_escape(external_id); | |
1478 | if (!external_label) | |
1479 | return -ENOMEM; | |
1480 | ||
605405c6 | 1481 | p = strjoin(prefix, "/", sender_label, "/", external_label); |
98a4c30b DH |
1482 | if (!p) |
1483 | return -ENOMEM; | |
1484 | ||
1485 | *ret_path = p; | |
1486 | return 0; | |
1487 | } | |
1488 | ||
1489 | /** | |
1490 | * bus_path_decode_unique() - decode unique object path | |
1491 | * @path: object path to decode | |
1492 | * @prefix: object path prefix | |
1493 | * @ret_sender: output parameter for sender-id label | |
1494 | * @ret_external: output parameter for external-id label | |
1495 | * | |
1496 | * This does the reverse of bus_path_encode_unique() (see its description for | |
1497 | * details). Both trailing labels, sender-id and external-id, are unescaped and | |
1498 | * returned in the given output parameters (the caller must free them). | |
1499 | * | |
1500 | * Note that this function returns 0 if the path does not match the template | |
1501 | * (see bus_path_encode_unique()), 1 if it matched. | |
1502 | * | |
1503 | * Returns: Negative error code on failure, 0 if the given object path does not | |
1504 | * match the template (return parameters are set to NULL), 1 if it was | |
1505 | * parsed successfully (return parameters contain allocated labels). | |
1506 | */ | |
1507 | int bus_path_decode_unique(const char *path, const char *prefix, char **ret_sender, char **ret_external) { | |
1508 | const char *p, *q; | |
1509 | char *sender, *external; | |
1510 | ||
1511 | assert(object_path_is_valid(path)); | |
1512 | assert(object_path_is_valid(prefix)); | |
1513 | assert(ret_sender); | |
1514 | assert(ret_external); | |
1515 | ||
1516 | p = object_path_startswith(path, prefix); | |
1517 | if (!p) { | |
1518 | *ret_sender = NULL; | |
1519 | *ret_external = NULL; | |
1520 | return 0; | |
1521 | } | |
1522 | ||
1523 | q = strchr(p, '/'); | |
1524 | if (!q) { | |
1525 | *ret_sender = NULL; | |
1526 | *ret_external = NULL; | |
1527 | return 0; | |
1528 | } | |
1529 | ||
1530 | sender = bus_label_unescape_n(p, q - p); | |
1531 | external = bus_label_unescape(q + 1); | |
1532 | if (!sender || !external) { | |
1533 | free(sender); | |
1534 | free(external); | |
1535 | return -ENOMEM; | |
1536 | } | |
1537 | ||
1538 | *ret_sender = sender; | |
1539 | *ret_external = external; | |
1540 | return 1; | |
1541 | } | |
057171ef | 1542 | |
c9d031c3 EV |
1543 | int bus_property_get_rlimit( |
1544 | sd_bus *bus, | |
1545 | const char *path, | |
1546 | const char *interface, | |
1547 | const char *property, | |
1548 | sd_bus_message *reply, | |
1549 | void *userdata, | |
1550 | sd_bus_error *error) { | |
1551 | ||
1552 | struct rlimit *rl; | |
1553 | uint64_t u; | |
1554 | rlim_t x; | |
147f6858 | 1555 | const char *is_soft; |
c9d031c3 EV |
1556 | |
1557 | assert(bus); | |
1558 | assert(reply); | |
1559 | assert(userdata); | |
1560 | ||
147f6858 | 1561 | is_soft = endswith(property, "Soft"); |
c9d031c3 EV |
1562 | rl = *(struct rlimit**) userdata; |
1563 | if (rl) | |
147f6858 | 1564 | x = is_soft ? rl->rlim_cur : rl->rlim_max; |
c9d031c3 EV |
1565 | else { |
1566 | struct rlimit buf = {}; | |
1567 | int z; | |
147f6858 EV |
1568 | const char *s; |
1569 | ||
1570 | s = is_soft ? strndupa(property, is_soft - property) : property; | |
c9d031c3 | 1571 | |
147f6858 | 1572 | z = rlimit_from_string(strstr(s, "Limit")); |
c9d031c3 EV |
1573 | assert(z >= 0); |
1574 | ||
1575 | getrlimit(z, &buf); | |
147f6858 | 1576 | x = is_soft ? buf.rlim_cur : buf.rlim_max; |
c9d031c3 EV |
1577 | } |
1578 | ||
1579 | /* rlim_t might have different sizes, let's map | |
1580 | * RLIMIT_INFINITY to (uint64_t) -1, so that it is the same on | |
1581 | * all archs */ | |
1582 | u = x == RLIM_INFINITY ? (uint64_t) -1 : (uint64_t) x; | |
1583 | ||
1584 | return sd_bus_message_append(reply, "t", u); | |
1585 | } |