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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" |
21771f33 | 42 | #include "cgroup-util.h" |
40ca29a1 | 43 | #include "def.h" |
4f5dd394 | 44 | #include "escape.h" |
3ffd4af2 | 45 | #include "fd-util.h" |
2bba9a57 | 46 | #include "missing.h" |
21771f33 | 47 | #include "mount-util.h" |
73186d53 | 48 | #include "nsflags.h" |
6bedfcbb | 49 | #include "parse-util.h" |
ee104e11 | 50 | #include "proc-cmdline.h" |
78f22b97 | 51 | #include "rlimit-util.h" |
15a5e950 | 52 | #include "stdio-util.h" |
d53d9474 | 53 | #include "strv.h" |
ee104e11 | 54 | #include "user-util.h" |
40ca29a1 | 55 | |
19070062 | 56 | static int name_owner_change_callback(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { |
40ca29a1 LP |
57 | sd_event *e = userdata; |
58 | ||
40ca29a1 LP |
59 | assert(m); |
60 | assert(e); | |
61 | ||
19070062 | 62 | sd_bus_close(sd_bus_message_get_bus(m)); |
6203e07a | 63 | sd_event_exit(e, 0); |
b27adf35 | 64 | |
40ca29a1 LP |
65 | return 1; |
66 | } | |
67 | ||
6203e07a | 68 | int bus_async_unregister_and_exit(sd_event *e, sd_bus *bus, const char *name) { |
40ca29a1 | 69 | _cleanup_free_ char *match = NULL; |
11846aa7 | 70 | const char *unique; |
40ca29a1 LP |
71 | int r; |
72 | ||
73 | assert(e); | |
74 | assert(bus); | |
75 | assert(name); | |
76 | ||
6203e07a LP |
77 | /* We unregister the name here and then wait for the |
78 | * NameOwnerChanged signal for this event to arrive before we | |
79 | * quit. We do this in order to make sure that any queued | |
80 | * requests are still processed before we really exit. */ | |
81 | ||
11846aa7 | 82 | r = sd_bus_get_unique_name(bus, &unique); |
40ca29a1 LP |
83 | if (r < 0) |
84 | return r; | |
85 | ||
11846aa7 LP |
86 | r = asprintf(&match, |
87 | "sender='org.freedesktop.DBus'," | |
88 | "type='signal'," | |
89 | "interface='org.freedesktop.DBus'," | |
90 | "member='NameOwnerChanged'," | |
91 | "path='/org/freedesktop/DBus'," | |
92 | "arg0='%s'," | |
93 | "arg1='%s'," | |
94 | "arg2=''", name, unique); | |
95 | if (r < 0) | |
96 | return -ENOMEM; | |
97 | ||
19befb2d | 98 | r = sd_bus_add_match(bus, NULL, match, name_owner_change_callback, e); |
40ca29a1 LP |
99 | if (r < 0) |
100 | return r; | |
101 | ||
102 | r = sd_bus_release_name(bus, name); | |
103 | if (r < 0) | |
104 | return r; | |
105 | ||
40ca29a1 LP |
106 | return 0; |
107 | } | |
108 | ||
37224a5f LP |
109 | int bus_event_loop_with_idle( |
110 | sd_event *e, | |
111 | sd_bus *bus, | |
112 | const char *name, | |
113 | usec_t timeout, | |
114 | check_idle_t check_idle, | |
115 | void *userdata) { | |
40ca29a1 | 116 | bool exiting = false; |
6203e07a | 117 | int r, code; |
40ca29a1 LP |
118 | |
119 | assert(e); | |
120 | assert(bus); | |
121 | assert(name); | |
122 | ||
123 | for (;;) { | |
37224a5f LP |
124 | bool idle; |
125 | ||
40ca29a1 LP |
126 | r = sd_event_get_state(e); |
127 | if (r < 0) | |
128 | return r; | |
40ca29a1 LP |
129 | if (r == SD_EVENT_FINISHED) |
130 | break; | |
131 | ||
37224a5f LP |
132 | if (check_idle) |
133 | idle = check_idle(userdata); | |
134 | else | |
135 | idle = true; | |
136 | ||
137 | r = sd_event_run(e, exiting || !idle ? (uint64_t) -1 : timeout); | |
40ca29a1 LP |
138 | if (r < 0) |
139 | return r; | |
140 | ||
a8ba6cd1 | 141 | if (r == 0 && !exiting && idle) { |
b27adf35 LP |
142 | |
143 | r = sd_bus_try_close(bus); | |
144 | if (r == -EBUSY) | |
145 | continue; | |
146 | ||
430e21c2 LP |
147 | /* Fallback for dbus1 connections: we |
148 | * unregister the name and wait for the | |
149 | * response to come through for it */ | |
15411c0c | 150 | if (r == -EOPNOTSUPP) { |
430e21c2 LP |
151 | |
152 | /* Inform the service manager that we | |
153 | * are going down, so that it will | |
154 | * queue all further start requests, | |
155 | * instead of assuming we are already | |
156 | * running. */ | |
157 | sd_notify(false, "STOPPING=1"); | |
b27adf35 LP |
158 | |
159 | r = bus_async_unregister_and_exit(e, bus, name); | |
160 | if (r < 0) | |
161 | return r; | |
162 | ||
163 | exiting = true; | |
164 | continue; | |
165 | } | |
166 | ||
40ca29a1 LP |
167 | if (r < 0) |
168 | return r; | |
169 | ||
b27adf35 LP |
170 | sd_event_exit(e, 0); |
171 | break; | |
40ca29a1 LP |
172 | } |
173 | } | |
174 | ||
6203e07a LP |
175 | r = sd_event_get_exit_code(e, &code); |
176 | if (r < 0) | |
177 | return r; | |
178 | ||
179 | return code; | |
40ca29a1 LP |
180 | } |
181 | ||
5fd38859 | 182 | int bus_name_has_owner(sd_bus *c, const char *name, sd_bus_error *error) { |
4afd3348 | 183 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *rep = NULL; |
5fd38859 DH |
184 | int r, has_owner = 0; |
185 | ||
186 | assert(c); | |
187 | assert(name); | |
188 | ||
189 | r = sd_bus_call_method(c, | |
190 | "org.freedesktop.DBus", | |
191 | "/org/freedesktop/dbus", | |
192 | "org.freedesktop.DBus", | |
193 | "NameHasOwner", | |
194 | error, | |
195 | &rep, | |
196 | "s", | |
197 | name); | |
198 | if (r < 0) | |
199 | return r; | |
200 | ||
201 | r = sd_bus_message_read_basic(rep, 'b', &has_owner); | |
202 | if (r < 0) | |
203 | return sd_bus_error_set_errno(error, r); | |
204 | ||
205 | return has_owner; | |
206 | } | |
207 | ||
c529695e | 208 | static int check_good_user(sd_bus_message *m, uid_t good_user) { |
4afd3348 | 209 | _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL; |
c529695e LP |
210 | uid_t sender_uid; |
211 | int r; | |
212 | ||
213 | assert(m); | |
214 | ||
215 | if (good_user == UID_INVALID) | |
216 | return 0; | |
217 | ||
218 | r = sd_bus_query_sender_creds(m, SD_BUS_CREDS_EUID, &creds); | |
219 | if (r < 0) | |
220 | return r; | |
221 | ||
0f514420 LP |
222 | /* Don't trust augmented credentials for authorization */ |
223 | assert_return((sd_bus_creds_get_augmented_mask(creds) & SD_BUS_CREDS_EUID) == 0, -EPERM); | |
224 | ||
c529695e LP |
225 | r = sd_bus_creds_get_euid(creds, &sender_uid); |
226 | if (r < 0) | |
227 | return r; | |
228 | ||
229 | return sender_uid == good_user; | |
230 | } | |
231 | ||
ceb24229 | 232 | int bus_test_polkit( |
f3885791 | 233 | sd_bus_message *call, |
def9a7aa | 234 | int capability, |
40ca29a1 | 235 | const char *action, |
403ed0e5 | 236 | const char **details, |
c529695e | 237 | uid_t good_user, |
40ca29a1 LP |
238 | bool *_challenge, |
239 | sd_bus_error *e) { | |
240 | ||
40ca29a1 LP |
241 | int r; |
242 | ||
f3885791 | 243 | assert(call); |
40ca29a1 LP |
244 | assert(action); |
245 | ||
ceb24229 LP |
246 | /* Tests non-interactively! */ |
247 | ||
c529695e LP |
248 | r = check_good_user(call, good_user); |
249 | if (r != 0) | |
250 | return r; | |
251 | ||
f3885791 | 252 | r = sd_bus_query_sender_privilege(call, capability); |
5b12334d LP |
253 | if (r < 0) |
254 | return r; | |
f3885791 | 255 | else if (r > 0) |
40ca29a1 | 256 | return 1; |
40ca29a1 LP |
257 | #ifdef ENABLE_POLKIT |
258 | else { | |
4afd3348 LP |
259 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *request = NULL; |
260 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; | |
ceb24229 | 261 | int authorized = false, challenge = false; |
403ed0e5 | 262 | const char *sender, **k, **v; |
5b12334d | 263 | |
f3885791 | 264 | sender = sd_bus_message_get_sender(call); |
5b12334d LP |
265 | if (!sender) |
266 | return -EBADMSG; | |
40ca29a1 | 267 | |
403ed0e5 | 268 | r = sd_bus_message_new_method_call( |
f3885791 | 269 | call->bus, |
403ed0e5 | 270 | &request, |
40ca29a1 LP |
271 | "org.freedesktop.PolicyKit1", |
272 | "/org/freedesktop/PolicyKit1/Authority", | |
273 | "org.freedesktop.PolicyKit1.Authority", | |
403ed0e5 MC |
274 | "CheckAuthorization"); |
275 | if (r < 0) | |
276 | return r; | |
277 | ||
278 | r = sd_bus_message_append( | |
279 | request, | |
280 | "(sa{sv})s", | |
40ca29a1 | 281 | "system-bus-name", 1, "name", "s", sender, |
403ed0e5 MC |
282 | action); |
283 | if (r < 0) | |
284 | return r; | |
285 | ||
286 | r = sd_bus_message_open_container(request, 'a', "{ss}"); | |
287 | if (r < 0) | |
288 | return r; | |
40ca29a1 | 289 | |
403ed0e5 MC |
290 | STRV_FOREACH_PAIR(k, v, details) { |
291 | r = sd_bus_message_append(request, "{ss}", *k, *v); | |
292 | if (r < 0) | |
293 | return r; | |
294 | } | |
295 | ||
296 | r = sd_bus_message_close_container(request); | |
297 | if (r < 0) | |
298 | return r; | |
299 | ||
300 | r = sd_bus_message_append(request, "us", 0, NULL); | |
301 | if (r < 0) | |
302 | return r; | |
303 | ||
304 | r = sd_bus_call(call->bus, request, 0, e, &reply); | |
40ca29a1 LP |
305 | if (r < 0) { |
306 | /* Treat no PK available as access denied */ | |
307 | if (sd_bus_error_has_name(e, SD_BUS_ERROR_SERVICE_UNKNOWN)) { | |
308 | sd_bus_error_free(e); | |
309 | return -EACCES; | |
310 | } | |
311 | ||
312 | return r; | |
313 | } | |
314 | ||
313333b4 | 315 | r = sd_bus_message_enter_container(reply, 'r', "bba{ss}"); |
2b49a470 TA |
316 | if (r < 0) |
317 | return r; | |
318 | ||
319 | r = sd_bus_message_read(reply, "bb", &authorized, &challenge); | |
320 | if (r < 0) | |
321 | return r; | |
40ca29a1 LP |
322 | |
323 | if (authorized) | |
324 | return 1; | |
325 | ||
326 | if (_challenge) { | |
327 | *_challenge = challenge; | |
328 | return 0; | |
329 | } | |
330 | } | |
331 | #endif | |
332 | ||
333 | return -EACCES; | |
334 | } | |
335 | ||
336 | #ifdef ENABLE_POLKIT | |
337 | ||
338 | typedef struct AsyncPolkitQuery { | |
339 | sd_bus_message *request, *reply; | |
340 | sd_bus_message_handler_t callback; | |
341 | void *userdata; | |
19befb2d | 342 | sd_bus_slot *slot; |
ebcf1f97 | 343 | Hashmap *registry; |
40ca29a1 LP |
344 | } AsyncPolkitQuery; |
345 | ||
19befb2d | 346 | static void async_polkit_query_free(AsyncPolkitQuery *q) { |
ebcf1f97 LP |
347 | |
348 | if (!q) | |
349 | return; | |
350 | ||
19befb2d | 351 | sd_bus_slot_unref(q->slot); |
ebcf1f97 LP |
352 | |
353 | if (q->registry && q->request) | |
354 | hashmap_remove(q->registry, q->request); | |
355 | ||
356 | sd_bus_message_unref(q->request); | |
357 | sd_bus_message_unref(q->reply); | |
358 | ||
359 | free(q); | |
360 | } | |
361 | ||
19070062 | 362 | static int async_polkit_callback(sd_bus_message *reply, void *userdata, sd_bus_error *error) { |
4afd3348 | 363 | _cleanup_(sd_bus_error_free) sd_bus_error error_buffer = SD_BUS_ERROR_NULL; |
ebcf1f97 | 364 | AsyncPolkitQuery *q = userdata; |
40ca29a1 LP |
365 | int r; |
366 | ||
40ca29a1 LP |
367 | assert(reply); |
368 | assert(q); | |
369 | ||
19befb2d | 370 | q->slot = sd_bus_slot_unref(q->slot); |
40ca29a1 | 371 | q->reply = sd_bus_message_ref(reply); |
40ca29a1 | 372 | |
ebcf1f97 LP |
373 | r = sd_bus_message_rewind(q->request, true); |
374 | if (r < 0) { | |
375 | r = sd_bus_reply_method_errno(q->request, r, NULL); | |
376 | goto finish; | |
377 | } | |
40ca29a1 | 378 | |
19070062 | 379 | r = q->callback(q->request, q->userdata, &error_buffer); |
ebcf1f97 | 380 | r = bus_maybe_reply_error(q->request, r, &error_buffer); |
40ca29a1 | 381 | |
ebcf1f97 | 382 | finish: |
19befb2d LP |
383 | async_polkit_query_free(q); |
384 | ||
ebcf1f97 | 385 | return r; |
40ca29a1 LP |
386 | } |
387 | ||
388 | #endif | |
389 | ||
390 | int bus_verify_polkit_async( | |
f3885791 | 391 | sd_bus_message *call, |
def9a7aa | 392 | int capability, |
40ca29a1 | 393 | const char *action, |
403ed0e5 | 394 | const char **details, |
40ca29a1 | 395 | bool interactive, |
c529695e | 396 | uid_t good_user, |
f3885791 LP |
397 | Hashmap **registry, |
398 | sd_bus_error *error) { | |
40ca29a1 LP |
399 | |
400 | #ifdef ENABLE_POLKIT | |
4afd3348 | 401 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *pk = NULL; |
40ca29a1 | 402 | AsyncPolkitQuery *q; |
403ed0e5 | 403 | const char *sender, **k, **v; |
f3885791 LP |
404 | sd_bus_message_handler_t callback; |
405 | void *userdata; | |
b911eb15 | 406 | int c; |
5b12334d | 407 | #endif |
40ca29a1 LP |
408 | int r; |
409 | ||
f3885791 | 410 | assert(call); |
40ca29a1 | 411 | assert(action); |
f3885791 | 412 | assert(registry); |
40ca29a1 | 413 | |
c529695e LP |
414 | r = check_good_user(call, good_user); |
415 | if (r != 0) | |
416 | return r; | |
417 | ||
40ca29a1 | 418 | #ifdef ENABLE_POLKIT |
f3885791 | 419 | q = hashmap_get(*registry, call); |
40ca29a1 | 420 | if (q) { |
102d8f81 | 421 | int authorized, challenge; |
40ca29a1 LP |
422 | |
423 | /* This is the second invocation of this function, and | |
424 | * there's already a response from polkit, let's | |
425 | * process it */ | |
426 | assert(q->reply); | |
427 | ||
428 | if (sd_bus_message_is_method_error(q->reply, NULL)) { | |
429 | const sd_bus_error *e; | |
430 | ||
ebcf1f97 | 431 | /* Copy error from polkit reply */ |
40ca29a1 LP |
432 | e = sd_bus_message_get_error(q->reply); |
433 | sd_bus_error_copy(error, e); | |
40ca29a1 | 434 | |
ebcf1f97 LP |
435 | /* Treat no PK available as access denied */ |
436 | if (sd_bus_error_has_name(e, SD_BUS_ERROR_SERVICE_UNKNOWN)) | |
437 | return -EACCES; | |
438 | ||
5958d089 | 439 | return -sd_bus_error_get_errno(e); |
40ca29a1 LP |
440 | } |
441 | ||
442 | r = sd_bus_message_enter_container(q->reply, 'r', "bba{ss}"); | |
443 | if (r >= 0) | |
444 | r = sd_bus_message_read(q->reply, "bb", &authorized, &challenge); | |
445 | ||
40ca29a1 LP |
446 | if (r < 0) |
447 | return r; | |
448 | ||
449 | if (authorized) | |
450 | return 1; | |
451 | ||
f2288cc6 LP |
452 | if (challenge) |
453 | return sd_bus_error_set(error, SD_BUS_ERROR_INTERACTIVE_AUTHORIZATION_REQUIRED, "Interactive authentication required."); | |
454 | ||
40ca29a1 LP |
455 | return -EACCES; |
456 | } | |
457 | #endif | |
458 | ||
f3885791 | 459 | r = sd_bus_query_sender_privilege(call, capability); |
5b12334d LP |
460 | if (r < 0) |
461 | return r; | |
f3885791 | 462 | else if (r > 0) |
40ca29a1 | 463 | return 1; |
5b12334d | 464 | |
40ca29a1 | 465 | #ifdef ENABLE_POLKIT |
f3885791 LP |
466 | if (sd_bus_get_current_message(call->bus) != call) |
467 | return -EINVAL; | |
468 | ||
469 | callback = sd_bus_get_current_handler(call->bus); | |
470 | if (!callback) | |
471 | return -EINVAL; | |
472 | ||
473 | userdata = sd_bus_get_current_userdata(call->bus); | |
474 | ||
475 | sender = sd_bus_message_get_sender(call); | |
5b12334d LP |
476 | if (!sender) |
477 | return -EBADMSG; | |
40ca29a1 | 478 | |
b911eb15 LP |
479 | c = sd_bus_message_get_allow_interactive_authorization(call); |
480 | if (c < 0) | |
481 | return c; | |
482 | if (c > 0) | |
483 | interactive = true; | |
484 | ||
d5099efc | 485 | r = hashmap_ensure_allocated(registry, NULL); |
40ca29a1 LP |
486 | if (r < 0) |
487 | return r; | |
488 | ||
489 | r = sd_bus_message_new_method_call( | |
f3885791 | 490 | call->bus, |
151b9b96 | 491 | &pk, |
40ca29a1 LP |
492 | "org.freedesktop.PolicyKit1", |
493 | "/org/freedesktop/PolicyKit1/Authority", | |
494 | "org.freedesktop.PolicyKit1.Authority", | |
151b9b96 | 495 | "CheckAuthorization"); |
40ca29a1 LP |
496 | if (r < 0) |
497 | return r; | |
498 | ||
499 | r = sd_bus_message_append( | |
500 | pk, | |
403ed0e5 | 501 | "(sa{sv})s", |
40ca29a1 | 502 | "system-bus-name", 1, "name", "s", sender, |
403ed0e5 MC |
503 | action); |
504 | if (r < 0) | |
505 | return r; | |
506 | ||
507 | r = sd_bus_message_open_container(pk, 'a', "{ss}"); | |
508 | if (r < 0) | |
509 | return r; | |
510 | ||
511 | STRV_FOREACH_PAIR(k, v, details) { | |
512 | r = sd_bus_message_append(pk, "{ss}", *k, *v); | |
513 | if (r < 0) | |
514 | return r; | |
515 | } | |
516 | ||
517 | r = sd_bus_message_close_container(pk); | |
518 | if (r < 0) | |
519 | return r; | |
520 | ||
521 | r = sd_bus_message_append(pk, "us", !!interactive, NULL); | |
40ca29a1 LP |
522 | if (r < 0) |
523 | return r; | |
524 | ||
525 | q = new0(AsyncPolkitQuery, 1); | |
526 | if (!q) | |
527 | return -ENOMEM; | |
528 | ||
f3885791 | 529 | q->request = sd_bus_message_ref(call); |
40ca29a1 LP |
530 | q->callback = callback; |
531 | q->userdata = userdata; | |
532 | ||
f3885791 | 533 | r = hashmap_put(*registry, call, q); |
40ca29a1 | 534 | if (r < 0) { |
19befb2d | 535 | async_polkit_query_free(q); |
40ca29a1 LP |
536 | return r; |
537 | } | |
538 | ||
ebcf1f97 LP |
539 | q->registry = *registry; |
540 | ||
f3885791 | 541 | r = sd_bus_call_async(call->bus, &q->slot, pk, async_polkit_callback, q, 0); |
ebcf1f97 | 542 | if (r < 0) { |
19befb2d | 543 | async_polkit_query_free(q); |
40ca29a1 | 544 | return r; |
ebcf1f97 | 545 | } |
40ca29a1 LP |
546 | |
547 | return 0; | |
548 | #endif | |
549 | ||
550 | return -EACCES; | |
551 | } | |
552 | ||
36e34057 | 553 | void bus_verify_polkit_async_registry_free(Hashmap *registry) { |
40ca29a1 LP |
554 | #ifdef ENABLE_POLKIT |
555 | AsyncPolkitQuery *q; | |
556 | ||
557 | while ((q = hashmap_steal_first(registry))) | |
19befb2d | 558 | async_polkit_query_free(q); |
40ca29a1 LP |
559 | |
560 | hashmap_free(registry); | |
561 | #endif | |
562 | } | |
0c842e0a | 563 | |
718db961 | 564 | int bus_check_peercred(sd_bus *c) { |
0c842e0a TG |
565 | struct ucred ucred; |
566 | socklen_t l; | |
0f8bd8de | 567 | int fd; |
0c842e0a TG |
568 | |
569 | assert(c); | |
570 | ||
571 | fd = sd_bus_get_fd(c); | |
0f8bd8de LP |
572 | if (fd < 0) |
573 | return fd; | |
0c842e0a TG |
574 | |
575 | l = sizeof(struct ucred); | |
0f8bd8de | 576 | if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &ucred, &l) < 0) |
0c842e0a | 577 | return -errno; |
0c842e0a | 578 | |
0f8bd8de | 579 | if (l != sizeof(struct ucred)) |
0c842e0a | 580 | return -E2BIG; |
0c842e0a TG |
581 | |
582 | if (ucred.uid != 0 && ucred.uid != geteuid()) | |
583 | return -EPERM; | |
584 | ||
585 | return 1; | |
586 | } | |
587 | ||
266f3e26 | 588 | int bus_connect_system_systemd(sd_bus **_bus) { |
4afd3348 | 589 | _cleanup_(sd_bus_unrefp) sd_bus *bus = NULL; |
0c842e0a | 590 | int r; |
0c842e0a TG |
591 | |
592 | assert(_bus); | |
593 | ||
0f8bd8de | 594 | if (geteuid() != 0) |
266f3e26 | 595 | return sd_bus_default_system(_bus); |
a1da8583 | 596 | |
a132bef0 ZJS |
597 | /* If we are root then let's talk directly to the system |
598 | * instance, instead of going via the bus */ | |
a6aa8912 LP |
599 | |
600 | r = sd_bus_new(&bus); | |
0f8bd8de LP |
601 | if (r < 0) |
602 | return r; | |
a1da8583 | 603 | |
a6aa8912 LP |
604 | r = sd_bus_set_address(bus, "unix:path=/run/systemd/private"); |
605 | if (r < 0) | |
606 | return r; | |
607 | ||
608 | r = sd_bus_start(bus); | |
609 | if (r < 0) | |
266f3e26 | 610 | return sd_bus_default_system(_bus); |
a6aa8912 | 611 | |
0f8bd8de | 612 | r = bus_check_peercred(bus); |
a1da8583 TG |
613 | if (r < 0) |
614 | return r; | |
615 | ||
616 | *_bus = bus; | |
0f8bd8de LP |
617 | bus = NULL; |
618 | ||
a1da8583 TG |
619 | return 0; |
620 | } | |
621 | ||
266f3e26 | 622 | int bus_connect_user_systemd(sd_bus **_bus) { |
4afd3348 | 623 | _cleanup_(sd_bus_unrefp) sd_bus *bus = NULL; |
a6aa8912 | 624 | _cleanup_free_ char *ee = NULL; |
41dd15e4 LP |
625 | const char *e; |
626 | int r; | |
627 | ||
41dd15e4 LP |
628 | assert(_bus); |
629 | ||
630 | e = secure_getenv("XDG_RUNTIME_DIR"); | |
537220d9 | 631 | if (!e) |
266f3e26 | 632 | return sd_bus_default_user(_bus); |
537220d9 | 633 | |
a6aa8912 LP |
634 | ee = bus_address_escape(e); |
635 | if (!ee) | |
537220d9 | 636 | return -ENOMEM; |
41dd15e4 LP |
637 | |
638 | r = sd_bus_new(&bus); | |
639 | if (r < 0) | |
640 | return r; | |
641 | ||
605405c6 | 642 | bus->address = strjoin("unix:path=", ee, "/systemd/private"); |
a6aa8912 LP |
643 | if (!bus->address) |
644 | return -ENOMEM; | |
41dd15e4 LP |
645 | |
646 | r = sd_bus_start(bus); | |
647 | if (r < 0) | |
266f3e26 | 648 | return sd_bus_default_user(_bus); |
41dd15e4 LP |
649 | |
650 | r = bus_check_peercred(bus); | |
651 | if (r < 0) | |
652 | return r; | |
653 | ||
654 | *_bus = bus; | |
655 | bus = NULL; | |
656 | ||
657 | return 0; | |
658 | } | |
659 | ||
4f9a9105 ZJS |
660 | #define print_property(name, fmt, ...) \ |
661 | do { \ | |
662 | if (value) \ | |
663 | printf(fmt "\n", __VA_ARGS__); \ | |
664 | else \ | |
665 | printf("%s=" fmt "\n", name, __VA_ARGS__); \ | |
666 | } while(0) | |
667 | ||
668 | int bus_print_property(const char *name, sd_bus_message *property, bool value, bool all) { | |
a1da8583 TG |
669 | char type; |
670 | const char *contents; | |
9f6eb1cd | 671 | int r; |
a1da8583 TG |
672 | |
673 | assert(name); | |
674 | assert(property); | |
675 | ||
9f6eb1cd KS |
676 | r = sd_bus_message_peek_type(property, &type, &contents); |
677 | if (r < 0) | |
678 | return r; | |
a1da8583 TG |
679 | |
680 | switch (type) { | |
681 | ||
682 | case SD_BUS_TYPE_STRING: { | |
683 | const char *s; | |
9f6eb1cd KS |
684 | |
685 | r = sd_bus_message_read_basic(property, type, &s); | |
686 | if (r < 0) | |
687 | return r; | |
a1da8583 | 688 | |
5993d46a ZJS |
689 | if (all || !isempty(s)) { |
690 | bool good; | |
691 | ||
692 | /* This property has a single value, so we need to take | |
693 | * care not to print a new line, everything else is OK. */ | |
694 | good = !strchr(s, '\n'); | |
695 | print_property(name, "%s", good ? s : "[unprintable]"); | |
696 | } | |
a1da8583 TG |
697 | |
698 | return 1; | |
699 | } | |
700 | ||
701 | case SD_BUS_TYPE_BOOLEAN: { | |
c2fa048c | 702 | int b; |
a1da8583 | 703 | |
9f6eb1cd KS |
704 | r = sd_bus_message_read_basic(property, type, &b); |
705 | if (r < 0) | |
706 | return r; | |
707 | ||
4f9a9105 | 708 | print_property(name, "%s", yes_no(b)); |
a1da8583 TG |
709 | |
710 | return 1; | |
711 | } | |
712 | ||
713 | case SD_BUS_TYPE_UINT64: { | |
714 | uint64_t u; | |
715 | ||
9f6eb1cd KS |
716 | r = sd_bus_message_read_basic(property, type, &u); |
717 | if (r < 0) | |
718 | return r; | |
a1da8583 TG |
719 | |
720 | /* Yes, heuristics! But we can change this check | |
721 | * should it turn out to not be sufficient */ | |
722 | ||
723 | if (endswith(name, "Timestamp")) { | |
724 | char timestamp[FORMAT_TIMESTAMP_MAX], *t; | |
725 | ||
726 | t = format_timestamp(timestamp, sizeof(timestamp), u); | |
727 | if (t || all) | |
4f9a9105 | 728 | print_property(name, "%s", strempty(t)); |
a1da8583 TG |
729 | |
730 | } else if (strstr(name, "USec")) { | |
731 | char timespan[FORMAT_TIMESPAN_MAX]; | |
732 | ||
4f9a9105 | 733 | print_property(name, "%s", format_timespan(timespan, sizeof(timespan), u, 0)); |
73186d53 DH |
734 | } else if (streq(name, "RestrictNamespaces")) { |
735 | _cleanup_free_ char *s = NULL; | |
736 | const char *result = NULL; | |
737 | ||
738 | if ((u & NAMESPACE_FLAGS_ALL) == 0) | |
739 | result = "yes"; | |
740 | else if ((u & NAMESPACE_FLAGS_ALL) == NAMESPACE_FLAGS_ALL) | |
741 | result = "no"; | |
742 | else { | |
743 | r = namespace_flag_to_string_many(u, &s); | |
744 | if (r < 0) | |
745 | return r; | |
746 | ||
747 | result = s; | |
748 | } | |
749 | ||
750 | print_property(name, "%s", result); | |
21771f33 YW |
751 | |
752 | } else if (streq(name, "MountFlags")) { | |
753 | const char *result = NULL; | |
754 | ||
755 | result = mount_propagation_flags_to_string(u); | |
756 | if (!result) | |
757 | return -EINVAL; | |
758 | ||
759 | print_property(name, "%s", result); | |
760 | ||
761 | } else if ((STR_IN_SET(name, "CPUWeight", "StartupCPUWeight", "IOWeight", "StartupIOWeight") && u == CGROUP_WEIGHT_INVALID) || | |
762 | (STR_IN_SET(name, "CPUShares", "StartupCPUShares") && u == CGROUP_CPU_SHARES_INVALID) || | |
763 | (STR_IN_SET(name, "BlockIOWeight", "StartupBlockIOWeight") && u == CGROUP_BLKIO_WEIGHT_INVALID) || | |
764 | (STR_IN_SET(name, "MemoryCurrent", "TasksCurrent") && u == (uint64_t) -1) || | |
765 | (endswith(name, "NSec") && u == (uint64_t) -1)) | |
766 | ||
767 | print_property(name, "%s", "[not set]"); | |
768 | ||
769 | else if ((STR_IN_SET(name, "MemoryLow", "MemoryHigh", "MemoryMax", "MemorySwapMax", "MemoryLimit") && u == CGROUP_LIMIT_MAX) || | |
770 | (STR_IN_SET(name, "TasksMax", "DefaultTasksMax") && u == (uint64_t) -1) || | |
771 | (startswith(name, "Limit") && u == (uint64_t) -1) || | |
772 | (startswith(name, "DefaultLimit") && u == (uint64_t) -1)) | |
773 | ||
774 | print_property(name, "%s", "infinity"); | |
775 | else | |
4f9a9105 | 776 | print_property(name, "%"PRIu64, u); |
a1da8583 TG |
777 | |
778 | return 1; | |
779 | } | |
780 | ||
d7161865 DM |
781 | case SD_BUS_TYPE_INT64: { |
782 | int64_t i; | |
783 | ||
784 | r = sd_bus_message_read_basic(property, type, &i); | |
785 | if (r < 0) | |
786 | return r; | |
787 | ||
4f9a9105 | 788 | print_property(name, "%"PRIi64, i); |
d7161865 DM |
789 | |
790 | return 1; | |
791 | } | |
792 | ||
a1da8583 TG |
793 | case SD_BUS_TYPE_UINT32: { |
794 | uint32_t u; | |
795 | ||
9f6eb1cd KS |
796 | r = sd_bus_message_read_basic(property, type, &u); |
797 | if (r < 0) | |
798 | return r; | |
a1da8583 TG |
799 | |
800 | if (strstr(name, "UMask") || strstr(name, "Mode")) | |
4f9a9105 | 801 | print_property(name, "%04o", u); |
a1da8583 | 802 | else |
4f9a9105 | 803 | print_property(name, "%"PRIu32, u); |
a1da8583 TG |
804 | |
805 | return 1; | |
806 | } | |
807 | ||
808 | case SD_BUS_TYPE_INT32: { | |
809 | int32_t i; | |
810 | ||
9f6eb1cd KS |
811 | r = sd_bus_message_read_basic(property, type, &i); |
812 | if (r < 0) | |
813 | return r; | |
a1da8583 | 814 | |
4f9a9105 | 815 | print_property(name, "%"PRIi32, i); |
a1da8583 TG |
816 | return 1; |
817 | } | |
818 | ||
819 | case SD_BUS_TYPE_DOUBLE: { | |
820 | double d; | |
821 | ||
9f6eb1cd KS |
822 | r = sd_bus_message_read_basic(property, type, &d); |
823 | if (r < 0) | |
824 | return r; | |
a1da8583 | 825 | |
4f9a9105 | 826 | print_property(name, "%g", d); |
a1da8583 TG |
827 | return 1; |
828 | } | |
829 | ||
830 | case SD_BUS_TYPE_ARRAY: | |
a1da8583 | 831 | if (streq(contents, "s")) { |
261afec5 MAP |
832 | bool first = true; |
833 | const char *str; | |
a1da8583 | 834 | |
9f6eb1cd KS |
835 | r = sd_bus_message_enter_container(property, SD_BUS_TYPE_ARRAY, contents); |
836 | if (r < 0) | |
837 | return r; | |
838 | ||
9ed794a3 | 839 | while ((r = sd_bus_message_read_basic(property, SD_BUS_TYPE_STRING, &str)) > 0) { |
5993d46a ZJS |
840 | bool good; |
841 | ||
4f9a9105 | 842 | if (first && !value) |
261afec5 MAP |
843 | printf("%s=", name); |
844 | ||
ed88a900 | 845 | /* This property has multiple space-separated values, so |
5993d46a ZJS |
846 | * neither spaces not newlines can be allowed in a value. */ |
847 | good = str[strcspn(str, " \n")] == '\0'; | |
848 | ||
849 | printf("%s%s", first ? "" : " ", good ? str : "[unprintable]"); | |
261afec5 MAP |
850 | |
851 | first = false; | |
852 | } | |
9f6eb1cd KS |
853 | if (r < 0) |
854 | return r; | |
a1da8583 | 855 | |
4f9a9105 | 856 | if (first && all && !value) |
a1da8583 | 857 | printf("%s=", name); |
261afec5 | 858 | if (!first || all) |
a1da8583 | 859 | puts(""); |
a1da8583 | 860 | |
9f6eb1cd KS |
861 | r = sd_bus_message_exit_container(property); |
862 | if (r < 0) | |
863 | return r; | |
a1da8583 TG |
864 | |
865 | return 1; | |
866 | ||
867 | } else if (streq(contents, "y")) { | |
868 | const uint8_t *u; | |
869 | size_t n; | |
870 | ||
9f6eb1cd KS |
871 | r = sd_bus_message_read_array(property, SD_BUS_TYPE_BYTE, (const void**) &u, &n); |
872 | if (r < 0) | |
873 | return r; | |
874 | ||
a1da8583 TG |
875 | if (all || n > 0) { |
876 | unsigned int i; | |
877 | ||
4f9a9105 ZJS |
878 | if (!value) |
879 | printf("%s=", name); | |
a1da8583 TG |
880 | |
881 | for (i = 0; i < n; i++) | |
882 | printf("%02x", u[i]); | |
883 | ||
884 | puts(""); | |
885 | } | |
886 | ||
887 | return 1; | |
888 | ||
889 | } else if (streq(contents, "u")) { | |
890 | uint32_t *u; | |
891 | size_t n; | |
892 | ||
9f6eb1cd KS |
893 | r = sd_bus_message_read_array(property, SD_BUS_TYPE_UINT32, (const void**) &u, &n); |
894 | if (r < 0) | |
895 | return r; | |
896 | ||
a1da8583 TG |
897 | if (all || n > 0) { |
898 | unsigned int i; | |
899 | ||
4f9a9105 ZJS |
900 | if (!value) |
901 | printf("%s=", name); | |
a1da8583 TG |
902 | |
903 | for (i = 0; i < n; i++) | |
904 | printf("%08x", u[i]); | |
905 | ||
906 | puts(""); | |
907 | } | |
908 | ||
909 | return 1; | |
910 | } | |
911 | ||
912 | break; | |
913 | } | |
914 | ||
915 | return 0; | |
916 | } | |
d21ed1ea | 917 | |
85500523 | 918 | int bus_print_all_properties(sd_bus *bus, const char *dest, const char *path, char **filter, bool value, bool all) { |
4afd3348 LP |
919 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; |
920 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
ffc06c35 KS |
921 | int r; |
922 | ||
9f6eb1cd KS |
923 | assert(bus); |
924 | assert(path); | |
925 | ||
926 | r = sd_bus_call_method(bus, | |
27e72d6b | 927 | dest, |
ffc06c35 KS |
928 | path, |
929 | "org.freedesktop.DBus.Properties", | |
930 | "GetAll", | |
931 | &error, | |
9f6eb1cd | 932 | &reply, |
ffc06c35 | 933 | "s", ""); |
9f6eb1cd | 934 | if (r < 0) |
ffc06c35 | 935 | return r; |
ffc06c35 | 936 | |
9f6eb1cd | 937 | r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "{sv}"); |
ffc06c35 KS |
938 | if (r < 0) |
939 | return r; | |
940 | ||
9f6eb1cd | 941 | while ((r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) { |
ffc06c35 | 942 | const char *name; |
ffc06c35 | 943 | const char *contents; |
ffc06c35 | 944 | |
9f6eb1cd | 945 | r = sd_bus_message_read_basic(reply, SD_BUS_TYPE_STRING, &name); |
ffc06c35 KS |
946 | if (r < 0) |
947 | return r; | |
948 | ||
9f6eb1cd KS |
949 | if (!filter || strv_find(filter, name)) { |
950 | r = sd_bus_message_peek_type(reply, NULL, &contents); | |
951 | if (r < 0) | |
952 | return r; | |
953 | ||
954 | r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_VARIANT, contents); | |
955 | if (r < 0) | |
956 | return r; | |
ffc06c35 | 957 | |
85500523 | 958 | r = bus_print_property(name, reply, value, all); |
9f6eb1cd KS |
959 | if (r < 0) |
960 | return r; | |
27e72d6b SP |
961 | if (r == 0) { |
962 | if (all) | |
963 | printf("%s=[unprintable]\n", name); | |
964 | /* skip what we didn't read */ | |
965 | r = sd_bus_message_skip(reply, contents); | |
966 | if (r < 0) | |
967 | return r; | |
968 | } | |
9f6eb1cd KS |
969 | |
970 | r = sd_bus_message_exit_container(reply); | |
971 | if (r < 0) | |
972 | return r; | |
973 | } else { | |
974 | r = sd_bus_message_skip(reply, "v"); | |
975 | if (r < 0) | |
976 | return r; | |
977 | } | |
978 | ||
979 | r = sd_bus_message_exit_container(reply); | |
ffc06c35 KS |
980 | if (r < 0) |
981 | return r; | |
9f6eb1cd KS |
982 | } |
983 | if (r < 0) | |
984 | return r; | |
ffc06c35 | 985 | |
9f6eb1cd KS |
986 | r = sd_bus_message_exit_container(reply); |
987 | if (r < 0) | |
988 | return r; | |
ffc06c35 | 989 | |
9f6eb1cd KS |
990 | return 0; |
991 | } | |
ffc06c35 | 992 | |
9f6eb1cd KS |
993 | int bus_map_id128(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) { |
994 | sd_id128_t *p = userdata; | |
995 | const void *v; | |
996 | size_t n; | |
997 | int r; | |
ffc06c35 | 998 | |
9f6eb1cd KS |
999 | r = sd_bus_message_read_array(m, SD_BUS_TYPE_BYTE, &v, &n); |
1000 | if (r < 0) | |
1001 | return r; | |
ffc06c35 | 1002 | |
9f6eb1cd KS |
1003 | if (n == 0) |
1004 | *p = SD_ID128_NULL; | |
1005 | else if (n == 16) | |
1006 | memcpy((*p).bytes, v, n); | |
1007 | else | |
1008 | return -EINVAL; | |
ffc06c35 | 1009 | |
9f6eb1cd KS |
1010 | return 0; |
1011 | } | |
ffc06c35 | 1012 | |
9f6eb1cd KS |
1013 | static int map_basic(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) { |
1014 | char type; | |
1015 | int r; | |
ffc06c35 | 1016 | |
9f6eb1cd KS |
1017 | r = sd_bus_message_peek_type(m, &type, NULL); |
1018 | if (r < 0) | |
1019 | return r; | |
ffc06c35 | 1020 | |
9f6eb1cd | 1021 | switch (type) { |
8b3b6f58 | 1022 | |
9f6eb1cd | 1023 | case SD_BUS_TYPE_STRING: { |
9f6eb1cd | 1024 | char **p = userdata; |
8b3b6f58 | 1025 | const char *s; |
ffc06c35 | 1026 | |
9f6eb1cd KS |
1027 | r = sd_bus_message_read_basic(m, type, &s); |
1028 | if (r < 0) | |
8b3b6f58 | 1029 | return r; |
ffc06c35 | 1030 | |
9f6eb1cd | 1031 | if (isempty(s)) |
0b83b8a4 | 1032 | s = NULL; |
ffc06c35 | 1033 | |
8b3b6f58 | 1034 | return free_and_strdup(p, s); |
9f6eb1cd | 1035 | } |
ffc06c35 | 1036 | |
9f6eb1cd | 1037 | case SD_BUS_TYPE_ARRAY: { |
7d6884b6 TA |
1038 | _cleanup_strv_free_ char **l = NULL; |
1039 | char ***p = userdata; | |
ffc06c35 | 1040 | |
9f6eb1cd KS |
1041 | r = bus_message_read_strv_extend(m, &l); |
1042 | if (r < 0) | |
8b3b6f58 | 1043 | return r; |
ffc06c35 | 1044 | |
9f6eb1cd KS |
1045 | strv_free(*p); |
1046 | *p = l; | |
1047 | l = NULL; | |
8b3b6f58 | 1048 | return 0; |
9f6eb1cd | 1049 | } |
ffc06c35 | 1050 | |
9f6eb1cd KS |
1051 | case SD_BUS_TYPE_BOOLEAN: { |
1052 | unsigned b; | |
43dcc86a | 1053 | int *p = userdata; |
ffc06c35 | 1054 | |
9f6eb1cd KS |
1055 | r = sd_bus_message_read_basic(m, type, &b); |
1056 | if (r < 0) | |
8b3b6f58 | 1057 | return r; |
ffc06c35 | 1058 | |
9f6eb1cd | 1059 | *p = b; |
8b3b6f58 | 1060 | return 0; |
9f6eb1cd | 1061 | } |
ffc06c35 | 1062 | |
bdf97b8a | 1063 | case SD_BUS_TYPE_INT32: |
9f6eb1cd | 1064 | case SD_BUS_TYPE_UINT32: { |
bdf97b8a | 1065 | uint32_t u, *p = userdata; |
9f6eb1cd KS |
1066 | |
1067 | r = sd_bus_message_read_basic(m, type, &u); | |
1068 | if (r < 0) | |
8b3b6f58 | 1069 | return r; |
ffc06c35 | 1070 | |
9f6eb1cd | 1071 | *p = u; |
8b3b6f58 | 1072 | return 0; |
9f6eb1cd KS |
1073 | } |
1074 | ||
bdf97b8a | 1075 | case SD_BUS_TYPE_INT64: |
9f6eb1cd | 1076 | case SD_BUS_TYPE_UINT64: { |
bdf97b8a | 1077 | uint64_t t, *p = userdata; |
9f6eb1cd KS |
1078 | |
1079 | r = sd_bus_message_read_basic(m, type, &t); | |
1080 | if (r < 0) | |
8b3b6f58 | 1081 | return r; |
ffc06c35 | 1082 | |
9f6eb1cd | 1083 | *p = t; |
8b3b6f58 | 1084 | return 0; |
9f6eb1cd KS |
1085 | } |
1086 | ||
52e045f9 | 1087 | case SD_BUS_TYPE_DOUBLE: { |
8b3b6f58 | 1088 | double d, *p = userdata; |
52e045f9 SS |
1089 | |
1090 | r = sd_bus_message_read_basic(m, type, &d); | |
1091 | if (r < 0) | |
8b3b6f58 | 1092 | return r; |
52e045f9 SS |
1093 | |
1094 | *p = d; | |
8b3b6f58 LP |
1095 | return 0; |
1096 | }} | |
52e045f9 | 1097 | |
8b3b6f58 | 1098 | return -EOPNOTSUPP; |
9f6eb1cd KS |
1099 | } |
1100 | ||
fe506d56 LP |
1101 | int bus_message_map_all_properties( |
1102 | sd_bus_message *m, | |
1103 | const struct bus_properties_map *map, | |
f9e0eefc | 1104 | sd_bus_error *error, |
fe506d56 LP |
1105 | void *userdata) { |
1106 | ||
9f6eb1cd KS |
1107 | int r; |
1108 | ||
aae2b488 | 1109 | assert(m); |
9f6eb1cd KS |
1110 | assert(map); |
1111 | ||
9f6eb1cd KS |
1112 | r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "{sv}"); |
1113 | if (r < 0) | |
1114 | return r; | |
1115 | ||
1116 | while ((r = sd_bus_message_enter_container(m, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) { | |
1117 | const struct bus_properties_map *prop; | |
1118 | const char *member; | |
1119 | const char *contents; | |
1120 | void *v; | |
1121 | unsigned i; | |
1122 | ||
1123 | r = sd_bus_message_read_basic(m, SD_BUS_TYPE_STRING, &member); | |
ffc06c35 KS |
1124 | if (r < 0) |
1125 | return r; | |
1126 | ||
9f6eb1cd KS |
1127 | for (i = 0, prop = NULL; map[i].member; i++) |
1128 | if (streq(map[i].member, member)) { | |
1129 | prop = &map[i]; | |
1130 | break; | |
1131 | } | |
1132 | ||
1133 | if (prop) { | |
1134 | r = sd_bus_message_peek_type(m, NULL, &contents); | |
1135 | if (r < 0) | |
1136 | return r; | |
1137 | ||
1138 | r = sd_bus_message_enter_container(m, SD_BUS_TYPE_VARIANT, contents); | |
1139 | if (r < 0) | |
1140 | return r; | |
1141 | ||
1142 | v = (uint8_t *)userdata + prop->offset; | |
27e72d6b | 1143 | if (map[i].set) |
f9e0eefc | 1144 | r = prop->set(sd_bus_message_get_bus(m), member, m, error, v); |
9f6eb1cd | 1145 | else |
f9e0eefc | 1146 | r = map_basic(sd_bus_message_get_bus(m), member, m, error, v); |
2b49a470 TA |
1147 | if (r < 0) |
1148 | return r; | |
9f6eb1cd KS |
1149 | |
1150 | r = sd_bus_message_exit_container(m); | |
1151 | if (r < 0) | |
1152 | return r; | |
1153 | } else { | |
1154 | r = sd_bus_message_skip(m, "v"); | |
1155 | if (r < 0) | |
6c1508b8 | 1156 | return r; |
9f6eb1cd KS |
1157 | } |
1158 | ||
ffc06c35 KS |
1159 | r = sd_bus_message_exit_container(m); |
1160 | if (r < 0) | |
1161 | return r; | |
1162 | } | |
fe506d56 LP |
1163 | if (r < 0) |
1164 | return r; | |
ffc06c35 | 1165 | |
aae2b488 DH |
1166 | return sd_bus_message_exit_container(m); |
1167 | } | |
1168 | ||
fe506d56 LP |
1169 | int bus_message_map_properties_changed( |
1170 | sd_bus_message *m, | |
1171 | const struct bus_properties_map *map, | |
f9e0eefc | 1172 | sd_bus_error *error, |
fe506d56 LP |
1173 | void *userdata) { |
1174 | ||
aae2b488 DH |
1175 | const char *member; |
1176 | int r, invalidated, i; | |
1177 | ||
aae2b488 DH |
1178 | assert(m); |
1179 | assert(map); | |
1180 | ||
f9e0eefc | 1181 | r = bus_message_map_all_properties(m, map, error, userdata); |
aae2b488 DH |
1182 | if (r < 0) |
1183 | return r; | |
1184 | ||
1185 | r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "s"); | |
1186 | if (r < 0) | |
1187 | return r; | |
1188 | ||
1189 | invalidated = 0; | |
1190 | while ((r = sd_bus_message_read_basic(m, SD_BUS_TYPE_STRING, &member)) > 0) | |
1191 | for (i = 0; map[i].member; i++) | |
1192 | if (streq(map[i].member, member)) { | |
1193 | ++invalidated; | |
1194 | break; | |
1195 | } | |
fe506d56 LP |
1196 | if (r < 0) |
1197 | return r; | |
aae2b488 DH |
1198 | |
1199 | r = sd_bus_message_exit_container(m); | |
1200 | if (r < 0) | |
1201 | return r; | |
1202 | ||
1203 | return invalidated; | |
1204 | } | |
1205 | ||
fe506d56 LP |
1206 | int bus_map_all_properties( |
1207 | sd_bus *bus, | |
1208 | const char *destination, | |
1209 | const char *path, | |
1210 | const struct bus_properties_map *map, | |
f9e0eefc | 1211 | sd_bus_error *error, |
fe506d56 LP |
1212 | void *userdata) { |
1213 | ||
4afd3348 | 1214 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; |
aae2b488 DH |
1215 | int r; |
1216 | ||
1217 | assert(bus); | |
1218 | assert(destination); | |
1219 | assert(path); | |
1220 | assert(map); | |
1221 | ||
1222 | r = sd_bus_call_method( | |
1223 | bus, | |
1224 | destination, | |
1225 | path, | |
1226 | "org.freedesktop.DBus.Properties", | |
1227 | "GetAll", | |
f9e0eefc | 1228 | error, |
aae2b488 DH |
1229 | &m, |
1230 | "s", ""); | |
1231 | if (r < 0) | |
1232 | return r; | |
1233 | ||
f9e0eefc | 1234 | return bus_message_map_all_properties(m, map, error, userdata); |
ffc06c35 KS |
1235 | } |
1236 | ||
38303498 LP |
1237 | int bus_connect_transport(BusTransport transport, const char *host, bool user, sd_bus **ret) { |
1238 | _cleanup_(sd_bus_unrefp) sd_bus *bus = NULL; | |
d21ed1ea LP |
1239 | int r; |
1240 | ||
1241 | assert(transport >= 0); | |
1242 | assert(transport < _BUS_TRANSPORT_MAX); | |
38303498 | 1243 | assert(ret); |
d21ed1ea LP |
1244 | |
1245 | assert_return((transport == BUS_TRANSPORT_LOCAL) == !host, -EINVAL); | |
15411c0c | 1246 | assert_return(transport == BUS_TRANSPORT_LOCAL || !user, -EOPNOTSUPP); |
d21ed1ea LP |
1247 | |
1248 | switch (transport) { | |
1249 | ||
1250 | case BUS_TRANSPORT_LOCAL: | |
1251 | if (user) | |
38303498 | 1252 | r = sd_bus_default_user(&bus); |
d21ed1ea | 1253 | else |
38303498 | 1254 | r = sd_bus_default_system(&bus); |
d21ed1ea LP |
1255 | |
1256 | break; | |
1257 | ||
1258 | case BUS_TRANSPORT_REMOTE: | |
38303498 | 1259 | r = sd_bus_open_system_remote(&bus, host); |
41dd15e4 LP |
1260 | break; |
1261 | ||
de33fc62 | 1262 | case BUS_TRANSPORT_MACHINE: |
38303498 | 1263 | r = sd_bus_open_system_machine(&bus, host); |
41dd15e4 LP |
1264 | break; |
1265 | ||
1266 | default: | |
1267 | assert_not_reached("Hmm, unknown transport type."); | |
1268 | } | |
38303498 LP |
1269 | if (r < 0) |
1270 | return r; | |
41dd15e4 | 1271 | |
38303498 LP |
1272 | r = sd_bus_set_exit_on_disconnect(bus, true); |
1273 | if (r < 0) | |
1274 | return r; | |
1275 | ||
1276 | *ret = bus; | |
1277 | bus = NULL; | |
1278 | ||
1279 | return 0; | |
41dd15e4 LP |
1280 | } |
1281 | ||
266f3e26 | 1282 | int bus_connect_transport_systemd(BusTransport transport, const char *host, bool user, sd_bus **bus) { |
41dd15e4 LP |
1283 | int r; |
1284 | ||
1285 | assert(transport >= 0); | |
1286 | assert(transport < _BUS_TRANSPORT_MAX); | |
1287 | assert(bus); | |
1288 | ||
1289 | assert_return((transport == BUS_TRANSPORT_LOCAL) == !host, -EINVAL); | |
15411c0c | 1290 | assert_return(transport == BUS_TRANSPORT_LOCAL || !user, -EOPNOTSUPP); |
41dd15e4 LP |
1291 | |
1292 | switch (transport) { | |
1293 | ||
1294 | case BUS_TRANSPORT_LOCAL: | |
1295 | if (user) | |
266f3e26 | 1296 | r = bus_connect_user_systemd(bus); |
41dd15e4 | 1297 | else |
266f3e26 | 1298 | r = bus_connect_system_systemd(bus); |
41dd15e4 LP |
1299 | |
1300 | break; | |
1301 | ||
1302 | case BUS_TRANSPORT_REMOTE: | |
3db729cb | 1303 | r = sd_bus_open_system_remote(bus, host); |
d21ed1ea LP |
1304 | break; |
1305 | ||
de33fc62 LP |
1306 | case BUS_TRANSPORT_MACHINE: |
1307 | r = sd_bus_open_system_machine(bus, host); | |
d21ed1ea LP |
1308 | break; |
1309 | ||
1310 | default: | |
1311 | assert_not_reached("Hmm, unknown transport type."); | |
1312 | } | |
1313 | ||
1314 | return r; | |
1315 | } | |
e6504030 LP |
1316 | |
1317 | int bus_property_get_bool( | |
1318 | sd_bus *bus, | |
1319 | const char *path, | |
1320 | const char *interface, | |
1321 | const char *property, | |
1322 | sd_bus_message *reply, | |
ebcf1f97 LP |
1323 | void *userdata, |
1324 | sd_bus_error *error) { | |
e6504030 LP |
1325 | |
1326 | int b = *(bool*) userdata; | |
1327 | ||
1328 | return sd_bus_message_append_basic(reply, 'b', &b); | |
1329 | } | |
1330 | ||
766c94ad LP |
1331 | int bus_property_get_id128( |
1332 | sd_bus *bus, | |
1333 | const char *path, | |
1334 | const char *interface, | |
1335 | const char *property, | |
1336 | sd_bus_message *reply, | |
1337 | void *userdata, | |
1338 | sd_bus_error *error) { | |
1339 | ||
1340 | sd_id128_t *id = userdata; | |
1341 | ||
1342 | if (sd_id128_is_null(*id)) /* Add an empty array if the ID is zero */ | |
1343 | return sd_bus_message_append(reply, "ay", 0); | |
1344 | else | |
4b58153d | 1345 | return sd_bus_message_append_array(reply, 'y', id->bytes, 16); |
766c94ad LP |
1346 | } |
1347 | ||
718db961 LP |
1348 | #if __SIZEOF_SIZE_T__ != 8 |
1349 | int bus_property_get_size( | |
e6504030 LP |
1350 | sd_bus *bus, |
1351 | const char *path, | |
1352 | const char *interface, | |
1353 | const char *property, | |
1354 | sd_bus_message *reply, | |
ebcf1f97 LP |
1355 | void *userdata, |
1356 | sd_bus_error *error) { | |
e6504030 | 1357 | |
718db961 | 1358 | uint64_t sz = *(size_t*) userdata; |
e6504030 | 1359 | |
718db961 | 1360 | return sd_bus_message_append_basic(reply, 't', &sz); |
e6504030 | 1361 | } |
718db961 LP |
1362 | #endif |
1363 | ||
1364 | #if __SIZEOF_LONG__ != 8 | |
1365 | int bus_property_get_long( | |
1366 | sd_bus *bus, | |
1367 | const char *path, | |
1368 | const char *interface, | |
1369 | const char *property, | |
1370 | sd_bus_message *reply, | |
ebcf1f97 LP |
1371 | void *userdata, |
1372 | sd_bus_error *error) { | |
718db961 LP |
1373 | |
1374 | int64_t l = *(long*) userdata; | |
1375 | ||
1376 | return sd_bus_message_append_basic(reply, 'x', &l); | |
1377 | } | |
1378 | ||
1379 | int bus_property_get_ulong( | |
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 | uint64_t ul = *(unsigned long*) userdata; | |
1389 | ||
1390 | return sd_bus_message_append_basic(reply, 't', &ul); | |
1391 | } | |
1392 | #endif | |
5b30bef8 LP |
1393 | |
1394 | int bus_log_parse_error(int r) { | |
23bbb0de | 1395 | return log_error_errno(r, "Failed to parse bus message: %m"); |
5b30bef8 | 1396 | } |
f459b602 MAP |
1397 | |
1398 | int bus_log_create_error(int r) { | |
23bbb0de | 1399 | return log_error_errno(r, "Failed to create bus message: %m"); |
f459b602 MAP |
1400 | } |
1401 | ||
98a4c30b DH |
1402 | /** |
1403 | * bus_path_encode_unique() - encode unique object path | |
1404 | * @b: bus connection or NULL | |
1405 | * @prefix: object path prefix | |
1406 | * @sender_id: unique-name of client, or NULL | |
1407 | * @external_id: external ID to be chosen by client, or NULL | |
1408 | * @ret_path: storage for encoded object path pointer | |
1409 | * | |
1410 | * Whenever we provide a bus API that allows clients to create and manage | |
1411 | * server-side objects, we need to provide a unique name for these objects. If | |
1412 | * we let the server choose the name, we suffer from a race condition: If a | |
1413 | * client creates an object asynchronously, it cannot destroy that object until | |
1414 | * it received the method reply. It cannot know the name of the new object, | |
1415 | * thus, it cannot destroy it. Furthermore, it enforces a round-trip. | |
1416 | * | |
1417 | * Therefore, many APIs allow the client to choose the unique name for newly | |
1418 | * created objects. There're two problems to solve, though: | |
1419 | * 1) Object names are usually defined via dbus object paths, which are | |
1420 | * usually globally namespaced. Therefore, multiple clients must be able | |
1421 | * to choose unique object names without interference. | |
1422 | * 2) If multiple libraries share the same bus connection, they must be | |
1423 | * able to choose unique object names without interference. | |
1424 | * The first problem is solved easily by prefixing a name with the | |
1425 | * unique-bus-name of a connection. The server side must enforce this and | |
1426 | * reject any other name. The second problem is solved by providing unique | |
1427 | * suffixes from within sd-bus. | |
1428 | * | |
1429 | * This helper allows clients to create unique object-paths. It uses the | |
1430 | * template '/prefix/sender_id/external_id' and returns the new path in | |
1431 | * @ret_path (must be freed by the caller). | |
1432 | * If @sender_id is NULL, the unique-name of @b is used. If @external_id is | |
1433 | * NULL, this function allocates a unique suffix via @b (by requesting a new | |
1434 | * cookie). If both @sender_id and @external_id are given, @b can be passed as | |
1435 | * NULL. | |
1436 | * | |
1437 | * Returns: 0 on success, negative error code on failure. | |
1438 | */ | |
1439 | int bus_path_encode_unique(sd_bus *b, const char *prefix, const char *sender_id, const char *external_id, char **ret_path) { | |
1440 | _cleanup_free_ char *sender_label = NULL, *external_label = NULL; | |
1441 | char external_buf[DECIMAL_STR_MAX(uint64_t)], *p; | |
1442 | int r; | |
1443 | ||
1444 | assert_return(b || (sender_id && external_id), -EINVAL); | |
1445 | assert_return(object_path_is_valid(prefix), -EINVAL); | |
1446 | assert_return(ret_path, -EINVAL); | |
1447 | ||
1448 | if (!sender_id) { | |
1449 | r = sd_bus_get_unique_name(b, &sender_id); | |
1450 | if (r < 0) | |
1451 | return r; | |
1452 | } | |
1453 | ||
1454 | if (!external_id) { | |
1455 | xsprintf(external_buf, "%"PRIu64, ++b->cookie); | |
1456 | external_id = external_buf; | |
1457 | } | |
1458 | ||
1459 | sender_label = bus_label_escape(sender_id); | |
1460 | if (!sender_label) | |
1461 | return -ENOMEM; | |
1462 | ||
1463 | external_label = bus_label_escape(external_id); | |
1464 | if (!external_label) | |
1465 | return -ENOMEM; | |
1466 | ||
605405c6 | 1467 | p = strjoin(prefix, "/", sender_label, "/", external_label); |
98a4c30b DH |
1468 | if (!p) |
1469 | return -ENOMEM; | |
1470 | ||
1471 | *ret_path = p; | |
1472 | return 0; | |
1473 | } | |
1474 | ||
1475 | /** | |
1476 | * bus_path_decode_unique() - decode unique object path | |
1477 | * @path: object path to decode | |
1478 | * @prefix: object path prefix | |
1479 | * @ret_sender: output parameter for sender-id label | |
1480 | * @ret_external: output parameter for external-id label | |
1481 | * | |
1482 | * This does the reverse of bus_path_encode_unique() (see its description for | |
1483 | * details). Both trailing labels, sender-id and external-id, are unescaped and | |
1484 | * returned in the given output parameters (the caller must free them). | |
1485 | * | |
1486 | * Note that this function returns 0 if the path does not match the template | |
1487 | * (see bus_path_encode_unique()), 1 if it matched. | |
1488 | * | |
1489 | * Returns: Negative error code on failure, 0 if the given object path does not | |
1490 | * match the template (return parameters are set to NULL), 1 if it was | |
1491 | * parsed successfully (return parameters contain allocated labels). | |
1492 | */ | |
1493 | int bus_path_decode_unique(const char *path, const char *prefix, char **ret_sender, char **ret_external) { | |
1494 | const char *p, *q; | |
1495 | char *sender, *external; | |
1496 | ||
1497 | assert(object_path_is_valid(path)); | |
1498 | assert(object_path_is_valid(prefix)); | |
1499 | assert(ret_sender); | |
1500 | assert(ret_external); | |
1501 | ||
1502 | p = object_path_startswith(path, prefix); | |
1503 | if (!p) { | |
1504 | *ret_sender = NULL; | |
1505 | *ret_external = NULL; | |
1506 | return 0; | |
1507 | } | |
1508 | ||
1509 | q = strchr(p, '/'); | |
1510 | if (!q) { | |
1511 | *ret_sender = NULL; | |
1512 | *ret_external = NULL; | |
1513 | return 0; | |
1514 | } | |
1515 | ||
1516 | sender = bus_label_unescape_n(p, q - p); | |
1517 | external = bus_label_unescape(q + 1); | |
1518 | if (!sender || !external) { | |
1519 | free(sender); | |
1520 | free(external); | |
1521 | return -ENOMEM; | |
1522 | } | |
1523 | ||
1524 | *ret_sender = sender; | |
1525 | *ret_external = external; | |
1526 | return 1; | |
1527 | } | |
057171ef | 1528 | |
c9d031c3 EV |
1529 | int bus_property_get_rlimit( |
1530 | sd_bus *bus, | |
1531 | const char *path, | |
1532 | const char *interface, | |
1533 | const char *property, | |
1534 | sd_bus_message *reply, | |
1535 | void *userdata, | |
1536 | sd_bus_error *error) { | |
1537 | ||
1538 | struct rlimit *rl; | |
1539 | uint64_t u; | |
1540 | rlim_t x; | |
147f6858 | 1541 | const char *is_soft; |
c9d031c3 EV |
1542 | |
1543 | assert(bus); | |
1544 | assert(reply); | |
1545 | assert(userdata); | |
1546 | ||
147f6858 | 1547 | is_soft = endswith(property, "Soft"); |
c9d031c3 EV |
1548 | rl = *(struct rlimit**) userdata; |
1549 | if (rl) | |
147f6858 | 1550 | x = is_soft ? rl->rlim_cur : rl->rlim_max; |
c9d031c3 EV |
1551 | else { |
1552 | struct rlimit buf = {}; | |
1553 | int z; | |
147f6858 EV |
1554 | const char *s; |
1555 | ||
1556 | s = is_soft ? strndupa(property, is_soft - property) : property; | |
c9d031c3 | 1557 | |
147f6858 | 1558 | z = rlimit_from_string(strstr(s, "Limit")); |
c9d031c3 EV |
1559 | assert(z >= 0); |
1560 | ||
1561 | getrlimit(z, &buf); | |
147f6858 | 1562 | x = is_soft ? buf.rlim_cur : buf.rlim_max; |
c9d031c3 EV |
1563 | } |
1564 | ||
1565 | /* rlim_t might have different sizes, let's map | |
1566 | * RLIMIT_INFINITY to (uint64_t) -1, so that it is the same on | |
1567 | * all archs */ | |
1568 | u = x == RLIM_INFINITY ? (uint64_t) -1 : (uint64_t) x; | |
1569 | ||
1570 | return sd_bus_message_append(reply, "t", u); | |
1571 | } | |
984794ba LP |
1572 | |
1573 | int bus_track_add_name_many(sd_bus_track *t, char **l) { | |
1574 | int r = 0; | |
1575 | char **i; | |
1576 | ||
1577 | assert(t); | |
1578 | ||
1579 | /* Continues adding after failure, and returns the first failure. */ | |
1580 | ||
1581 | STRV_FOREACH(i, l) { | |
1582 | int k; | |
1583 | ||
1584 | k = sd_bus_track_add_name(t, *i); | |
1585 | if (k < 0 && r >= 0) | |
1586 | r = k; | |
1587 | } | |
1588 | ||
1589 | return r; | |
1590 | } |