Line data Source code
1 : /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
2 :
3 : /***
4 : This file is part of systemd.
5 :
6 : Copyright 2011 Lennart Poettering
7 :
8 : systemd is free software; you can redistribute it and/or modify it
9 : under the terms of the GNU Lesser General Public License as published by
10 : the Free Software Foundation; either version 2.1 of the License, or
11 : (at your option) any later version.
12 :
13 : systemd is distributed in the hope that it will be useful, but
14 : WITHOUT ANY WARRANTY; without even the implied warranty of
15 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 : Lesser General Public License for more details.
17 :
18 : You should have received a copy of the GNU Lesser General Public License
19 : along with systemd; If not, see <http://www.gnu.org/licenses/>.
20 : ***/
21 :
22 : #include <errno.h>
23 : #include <string.h>
24 :
25 : #include "util.h"
26 : #include "strv.h"
27 : #include "bus-util.h"
28 : #include "bus-common-errors.h"
29 : #include "bus-label.h"
30 :
31 : #include "logind.h"
32 : #include "logind-session.h"
33 : #include "logind-session-device.h"
34 :
35 0 : static int property_get_user(
36 : sd_bus *bus,
37 : const char *path,
38 : const char *interface,
39 : const char *property,
40 : sd_bus_message *reply,
41 : void *userdata,
42 : sd_bus_error *error) {
43 :
44 0 : _cleanup_free_ char *p = NULL;
45 0 : Session *s = userdata;
46 :
47 0 : assert(bus);
48 0 : assert(reply);
49 0 : assert(s);
50 :
51 0 : p = user_bus_path(s->user);
52 0 : if (!p)
53 0 : return -ENOMEM;
54 :
55 0 : return sd_bus_message_append(reply, "(uo)", (uint32_t) s->user->uid, p);
56 : }
57 :
58 0 : static int property_get_name(
59 : sd_bus *bus,
60 : const char *path,
61 : const char *interface,
62 : const char *property,
63 : sd_bus_message *reply,
64 : void *userdata,
65 : sd_bus_error *error) {
66 :
67 0 : Session *s = userdata;
68 :
69 0 : assert(bus);
70 0 : assert(reply);
71 0 : assert(s);
72 :
73 0 : return sd_bus_message_append(reply, "s", s->user->name);
74 : }
75 :
76 0 : static int property_get_seat(
77 : sd_bus *bus,
78 : const char *path,
79 : const char *interface,
80 : const char *property,
81 : sd_bus_message *reply,
82 : void *userdata,
83 : sd_bus_error *error) {
84 :
85 0 : _cleanup_free_ char *p = NULL;
86 0 : Session *s = userdata;
87 :
88 0 : assert(bus);
89 0 : assert(reply);
90 0 : assert(s);
91 :
92 0 : p = s->seat ? seat_bus_path(s->seat) : strdup("/");
93 0 : if (!p)
94 0 : return -ENOMEM;
95 :
96 0 : return sd_bus_message_append(reply, "(so)", s->seat ? s->seat->id : "", p);
97 : }
98 :
99 0 : static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_type, session_type, SessionType);
100 0 : static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_class, session_class, SessionClass);
101 :
102 0 : static int property_get_active(
103 : sd_bus *bus,
104 : const char *path,
105 : const char *interface,
106 : const char *property,
107 : sd_bus_message *reply,
108 : void *userdata,
109 : sd_bus_error *error) {
110 :
111 0 : Session *s = userdata;
112 :
113 0 : assert(bus);
114 0 : assert(reply);
115 0 : assert(s);
116 :
117 0 : return sd_bus_message_append(reply, "b", session_is_active(s));
118 : }
119 :
120 0 : static int property_get_state(
121 : sd_bus *bus,
122 : const char *path,
123 : const char *interface,
124 : const char *property,
125 : sd_bus_message *reply,
126 : void *userdata,
127 : sd_bus_error *error) {
128 :
129 0 : Session *s = userdata;
130 :
131 0 : assert(bus);
132 0 : assert(reply);
133 0 : assert(s);
134 :
135 0 : return sd_bus_message_append(reply, "s", session_state_to_string(session_get_state(s)));
136 : }
137 :
138 0 : static int property_get_idle_hint(
139 : sd_bus *bus,
140 : const char *path,
141 : const char *interface,
142 : const char *property,
143 : sd_bus_message *reply,
144 : void *userdata,
145 : sd_bus_error *error) {
146 :
147 0 : Session *s = userdata;
148 :
149 0 : assert(bus);
150 0 : assert(reply);
151 0 : assert(s);
152 :
153 0 : return sd_bus_message_append(reply, "b", session_get_idle_hint(s, NULL) > 0);
154 : }
155 :
156 0 : static int property_get_idle_since_hint(
157 : sd_bus *bus,
158 : const char *path,
159 : const char *interface,
160 : const char *property,
161 : sd_bus_message *reply,
162 : void *userdata,
163 : sd_bus_error *error) {
164 :
165 0 : Session *s = userdata;
166 0 : dual_timestamp t = DUAL_TIMESTAMP_NULL;
167 : uint64_t u;
168 : int r;
169 :
170 0 : assert(bus);
171 0 : assert(reply);
172 0 : assert(s);
173 :
174 0 : r = session_get_idle_hint(s, &t);
175 0 : if (r < 0)
176 0 : return r;
177 :
178 0 : u = streq(property, "IdleSinceHint") ? t.realtime : t.monotonic;
179 :
180 0 : return sd_bus_message_append(reply, "t", u);
181 : }
182 :
183 0 : int bus_session_method_terminate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
184 0 : Session *s = userdata;
185 : int r;
186 :
187 0 : assert(message);
188 0 : assert(s);
189 :
190 0 : r = bus_verify_polkit_async(
191 : message,
192 : CAP_KILL,
193 : "org.freedesktop.login1.manage",
194 : false,
195 0 : s->user->uid,
196 0 : &s->manager->polkit_registry,
197 : error);
198 0 : if (r < 0)
199 0 : return r;
200 0 : if (r == 0)
201 0 : return 1; /* Will call us back */
202 :
203 0 : r = session_stop(s, true);
204 0 : if (r < 0)
205 0 : return r;
206 :
207 0 : return sd_bus_reply_method_return(message, NULL);
208 : }
209 :
210 0 : int bus_session_method_activate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
211 0 : Session *s = userdata;
212 : int r;
213 :
214 0 : assert(message);
215 0 : assert(s);
216 :
217 0 : r = session_activate(s);
218 0 : if (r < 0)
219 0 : return r;
220 :
221 0 : return sd_bus_reply_method_return(message, NULL);
222 : }
223 :
224 0 : int bus_session_method_lock(sd_bus_message *message, void *userdata, sd_bus_error *error) {
225 0 : Session *s = userdata;
226 : int r;
227 :
228 0 : assert(message);
229 0 : assert(s);
230 :
231 0 : r = bus_verify_polkit_async(
232 : message,
233 : CAP_SYS_ADMIN,
234 : "org.freedesktop.login1.lock-sessions",
235 : false,
236 0 : s->user->uid,
237 0 : &s->manager->polkit_registry,
238 : error);
239 0 : if (r < 0)
240 0 : return r;
241 0 : if (r == 0)
242 0 : return 1; /* Will call us back */
243 :
244 0 : r = session_send_lock(s, strstr(sd_bus_message_get_member(message), "Lock"));
245 0 : if (r < 0)
246 0 : return r;
247 :
248 0 : return sd_bus_reply_method_return(message, NULL);
249 : }
250 :
251 0 : static int method_set_idle_hint(sd_bus_message *message, void *userdata, sd_bus_error *error) {
252 0 : _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
253 0 : Session *s = userdata;
254 : uid_t uid;
255 : int r, b;
256 :
257 0 : assert(message);
258 0 : assert(s);
259 :
260 0 : r = sd_bus_message_read(message, "b", &b);
261 0 : if (r < 0)
262 0 : return r;
263 :
264 0 : r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
265 0 : if (r < 0)
266 0 : return r;
267 :
268 0 : r = sd_bus_creds_get_euid(creds, &uid);
269 0 : if (r < 0)
270 0 : return r;
271 :
272 0 : if (uid != 0 && uid != s->user->uid)
273 0 : return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Only owner of session may set idle hint");
274 :
275 0 : session_set_idle_hint(s, b);
276 :
277 0 : return sd_bus_reply_method_return(message, NULL);
278 : }
279 :
280 0 : int bus_session_method_kill(sd_bus_message *message, void *userdata, sd_bus_error *error) {
281 0 : Session *s = userdata;
282 : const char *swho;
283 : int32_t signo;
284 : KillWho who;
285 : int r;
286 :
287 0 : assert(message);
288 0 : assert(s);
289 :
290 0 : r = sd_bus_message_read(message, "si", &swho, &signo);
291 0 : if (r < 0)
292 0 : return r;
293 :
294 0 : if (isempty(swho))
295 0 : who = KILL_ALL;
296 : else {
297 0 : who = kill_who_from_string(swho);
298 0 : if (who < 0)
299 0 : return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid kill parameter '%s'", swho);
300 : }
301 :
302 0 : if (signo <= 0 || signo >= _NSIG)
303 0 : return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid signal %i", signo);
304 :
305 0 : r = bus_verify_polkit_async(
306 : message,
307 : CAP_KILL,
308 : "org.freedesktop.login1.manage",
309 : false,
310 0 : s->user->uid,
311 0 : &s->manager->polkit_registry,
312 : error);
313 0 : if (r < 0)
314 0 : return r;
315 0 : if (r == 0)
316 0 : return 1; /* Will call us back */
317 :
318 0 : r = session_kill(s, who, signo);
319 0 : if (r < 0)
320 0 : return r;
321 :
322 0 : return sd_bus_reply_method_return(message, NULL);
323 : }
324 :
325 0 : static int method_take_control(sd_bus_message *message, void *userdata, sd_bus_error *error) {
326 0 : _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
327 0 : Session *s = userdata;
328 : int r, force;
329 : uid_t uid;
330 :
331 0 : assert(message);
332 0 : assert(s);
333 :
334 0 : r = sd_bus_message_read(message, "b", &force);
335 0 : if (r < 0)
336 0 : return r;
337 :
338 0 : r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
339 0 : if (r < 0)
340 0 : return r;
341 :
342 0 : r = sd_bus_creds_get_euid(creds, &uid);
343 0 : if (r < 0)
344 0 : return r;
345 :
346 0 : if (uid != 0 && (force || uid != s->user->uid))
347 0 : return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Only owner of session may take control");
348 :
349 0 : r = session_set_controller(s, sd_bus_message_get_sender(message), force);
350 0 : if (r < 0)
351 0 : return r;
352 :
353 0 : return sd_bus_reply_method_return(message, NULL);
354 : }
355 :
356 0 : static int method_release_control(sd_bus_message *message, void *userdata, sd_bus_error *error) {
357 0 : Session *s = userdata;
358 :
359 0 : assert(message);
360 0 : assert(s);
361 :
362 0 : if (!session_is_controller(s, sd_bus_message_get_sender(message)))
363 0 : return sd_bus_error_setf(error, BUS_ERROR_NOT_IN_CONTROL, "You are not in control of this session");
364 :
365 0 : session_drop_controller(s);
366 :
367 0 : return sd_bus_reply_method_return(message, NULL);
368 : }
369 :
370 0 : static int method_take_device(sd_bus_message *message, void *userdata, sd_bus_error *error) {
371 0 : Session *s = userdata;
372 : uint32_t major, minor;
373 : SessionDevice *sd;
374 : dev_t dev;
375 : int r;
376 :
377 0 : assert(message);
378 0 : assert(s);
379 :
380 0 : r = sd_bus_message_read(message, "uu", &major, &minor);
381 0 : if (r < 0)
382 0 : return r;
383 :
384 0 : if (!session_is_controller(s, sd_bus_message_get_sender(message)))
385 0 : return sd_bus_error_setf(error, BUS_ERROR_NOT_IN_CONTROL, "You are not in control of this session");
386 :
387 0 : dev = makedev(major, minor);
388 0 : sd = hashmap_get(s->devices, &dev);
389 0 : if (sd)
390 : /* We don't allow retrieving a device multiple times.
391 : * The related ReleaseDevice call is not ref-counted.
392 : * The caller should use dup() if it requires more
393 : * than one fd (it would be functionally
394 : * equivalent). */
395 0 : return sd_bus_error_setf(error, BUS_ERROR_DEVICE_IS_TAKEN, "Device already taken");
396 :
397 0 : r = session_device_new(s, dev, &sd);
398 0 : if (r < 0)
399 0 : return r;
400 :
401 0 : r = sd_bus_reply_method_return(message, "hb", sd->fd, !sd->active);
402 0 : if (r < 0)
403 0 : session_device_free(sd);
404 :
405 0 : return r;
406 : }
407 :
408 0 : static int method_release_device(sd_bus_message *message, void *userdata, sd_bus_error *error) {
409 0 : Session *s = userdata;
410 : uint32_t major, minor;
411 : SessionDevice *sd;
412 : dev_t dev;
413 : int r;
414 :
415 0 : assert(message);
416 0 : assert(s);
417 :
418 0 : r = sd_bus_message_read(message, "uu", &major, &minor);
419 0 : if (r < 0)
420 0 : return r;
421 :
422 0 : if (!session_is_controller(s, sd_bus_message_get_sender(message)))
423 0 : return sd_bus_error_setf(error, BUS_ERROR_NOT_IN_CONTROL, "You are not in control of this session");
424 :
425 0 : dev = makedev(major, minor);
426 0 : sd = hashmap_get(s->devices, &dev);
427 0 : if (!sd)
428 0 : return sd_bus_error_setf(error, BUS_ERROR_DEVICE_NOT_TAKEN, "Device not taken");
429 :
430 0 : session_device_free(sd);
431 0 : return sd_bus_reply_method_return(message, NULL);
432 : }
433 :
434 0 : static int method_pause_device_complete(sd_bus_message *message, void *userdata, sd_bus_error *error) {
435 0 : Session *s = userdata;
436 : uint32_t major, minor;
437 : SessionDevice *sd;
438 : dev_t dev;
439 : int r;
440 :
441 0 : assert(message);
442 0 : assert(s);
443 :
444 0 : r = sd_bus_message_read(message, "uu", &major, &minor);
445 0 : if (r < 0)
446 0 : return r;
447 :
448 0 : if (!session_is_controller(s, sd_bus_message_get_sender(message)))
449 0 : return sd_bus_error_setf(error, BUS_ERROR_NOT_IN_CONTROL, "You are not in control of this session");
450 :
451 0 : dev = makedev(major, minor);
452 0 : sd = hashmap_get(s->devices, &dev);
453 0 : if (!sd)
454 0 : return sd_bus_error_setf(error, BUS_ERROR_DEVICE_NOT_TAKEN, "Device not taken");
455 :
456 0 : session_device_complete_pause(sd);
457 :
458 0 : return sd_bus_reply_method_return(message, NULL);
459 : }
460 :
461 : const sd_bus_vtable session_vtable[] = {
462 : SD_BUS_VTABLE_START(0),
463 :
464 : SD_BUS_PROPERTY("Id", "s", NULL, offsetof(Session, id), SD_BUS_VTABLE_PROPERTY_CONST),
465 : SD_BUS_PROPERTY("User", "(uo)", property_get_user, 0, SD_BUS_VTABLE_PROPERTY_CONST),
466 : SD_BUS_PROPERTY("Name", "s", property_get_name, 0, SD_BUS_VTABLE_PROPERTY_CONST),
467 : BUS_PROPERTY_DUAL_TIMESTAMP("Timestamp", offsetof(Session, timestamp), SD_BUS_VTABLE_PROPERTY_CONST),
468 : SD_BUS_PROPERTY("VTNr", "u", NULL, offsetof(Session, vtnr), SD_BUS_VTABLE_PROPERTY_CONST),
469 : SD_BUS_PROPERTY("Seat", "(so)", property_get_seat, 0, SD_BUS_VTABLE_PROPERTY_CONST),
470 : SD_BUS_PROPERTY("TTY", "s", NULL, offsetof(Session, tty), SD_BUS_VTABLE_PROPERTY_CONST),
471 : SD_BUS_PROPERTY("Display", "s", NULL, offsetof(Session, display), SD_BUS_VTABLE_PROPERTY_CONST),
472 : SD_BUS_PROPERTY("Remote", "b", bus_property_get_bool, offsetof(Session, remote), SD_BUS_VTABLE_PROPERTY_CONST),
473 : SD_BUS_PROPERTY("RemoteHost", "s", NULL, offsetof(Session, remote_host), SD_BUS_VTABLE_PROPERTY_CONST),
474 : SD_BUS_PROPERTY("RemoteUser", "s", NULL, offsetof(Session, remote_user), SD_BUS_VTABLE_PROPERTY_CONST),
475 : SD_BUS_PROPERTY("Service", "s", NULL, offsetof(Session, service), SD_BUS_VTABLE_PROPERTY_CONST),
476 : SD_BUS_PROPERTY("Desktop", "s", NULL, offsetof(Session, desktop), SD_BUS_VTABLE_PROPERTY_CONST),
477 : SD_BUS_PROPERTY("Scope", "s", NULL, offsetof(Session, scope), SD_BUS_VTABLE_PROPERTY_CONST),
478 : SD_BUS_PROPERTY("Leader", "u", bus_property_get_pid, offsetof(Session, leader), SD_BUS_VTABLE_PROPERTY_CONST),
479 : SD_BUS_PROPERTY("Audit", "u", NULL, offsetof(Session, audit_id), SD_BUS_VTABLE_PROPERTY_CONST),
480 : SD_BUS_PROPERTY("Type", "s", property_get_type, offsetof(Session, type), SD_BUS_VTABLE_PROPERTY_CONST),
481 : SD_BUS_PROPERTY("Class", "s", property_get_class, offsetof(Session, class), SD_BUS_VTABLE_PROPERTY_CONST),
482 : SD_BUS_PROPERTY("Active", "b", property_get_active, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
483 : SD_BUS_PROPERTY("State", "s", property_get_state, 0, 0),
484 : SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
485 : SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
486 : SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
487 :
488 : SD_BUS_METHOD("Terminate", NULL, NULL, bus_session_method_terminate, SD_BUS_VTABLE_UNPRIVILEGED),
489 : SD_BUS_METHOD("Activate", NULL, NULL, bus_session_method_activate, SD_BUS_VTABLE_UNPRIVILEGED),
490 : SD_BUS_METHOD("Lock", NULL, NULL, bus_session_method_lock, SD_BUS_VTABLE_UNPRIVILEGED),
491 : SD_BUS_METHOD("Unlock", NULL, NULL, bus_session_method_lock, SD_BUS_VTABLE_UNPRIVILEGED),
492 : SD_BUS_METHOD("SetIdleHint", "b", NULL, method_set_idle_hint, SD_BUS_VTABLE_UNPRIVILEGED),
493 : SD_BUS_METHOD("Kill", "si", NULL, bus_session_method_kill, SD_BUS_VTABLE_UNPRIVILEGED),
494 : SD_BUS_METHOD("TakeControl", "b", NULL, method_take_control, SD_BUS_VTABLE_UNPRIVILEGED),
495 : SD_BUS_METHOD("ReleaseControl", NULL, NULL, method_release_control, SD_BUS_VTABLE_UNPRIVILEGED),
496 : SD_BUS_METHOD("TakeDevice", "uu", "hb", method_take_device, SD_BUS_VTABLE_UNPRIVILEGED),
497 : SD_BUS_METHOD("ReleaseDevice", "uu", NULL, method_release_device, SD_BUS_VTABLE_UNPRIVILEGED),
498 : SD_BUS_METHOD("PauseDeviceComplete", "uu", NULL, method_pause_device_complete, SD_BUS_VTABLE_UNPRIVILEGED),
499 :
500 : SD_BUS_SIGNAL("PauseDevice", "uus", 0),
501 : SD_BUS_SIGNAL("ResumeDevice", "uuh", 0),
502 : SD_BUS_SIGNAL("Lock", NULL, 0),
503 : SD_BUS_SIGNAL("Unlock", NULL, 0),
504 :
505 : SD_BUS_VTABLE_END
506 : };
507 :
508 0 : int session_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) {
509 0 : Manager *m = userdata;
510 : Session *session;
511 : int r;
512 :
513 0 : assert(bus);
514 0 : assert(path);
515 0 : assert(interface);
516 0 : assert(found);
517 0 : assert(m);
518 :
519 0 : if (streq(path, "/org/freedesktop/login1/session/self")) {
520 0 : _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
521 : sd_bus_message *message;
522 : const char *name;
523 :
524 0 : message = sd_bus_get_current_message(bus);
525 0 : if (!message)
526 0 : return 0;
527 :
528 0 : r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_SESSION|SD_BUS_CREDS_AUGMENT, &creds);
529 0 : if (r < 0)
530 0 : return r;
531 :
532 0 : r = sd_bus_creds_get_session(creds, &name);
533 0 : if (r < 0)
534 0 : return r;
535 :
536 0 : session = hashmap_get(m->sessions, name);
537 : } else {
538 0 : _cleanup_free_ char *e = NULL;
539 : const char *p;
540 :
541 0 : p = startswith(path, "/org/freedesktop/login1/session/");
542 0 : if (!p)
543 0 : return 0;
544 :
545 0 : e = bus_label_unescape(p);
546 0 : if (!e)
547 0 : return -ENOMEM;
548 :
549 0 : session = hashmap_get(m->sessions, e);
550 : }
551 :
552 0 : if (!session)
553 0 : return 0;
554 :
555 0 : *found = session;
556 0 : return 1;
557 : }
558 :
559 0 : char *session_bus_path(Session *s) {
560 0 : _cleanup_free_ char *t = NULL;
561 :
562 0 : assert(s);
563 :
564 0 : t = bus_label_escape(s->id);
565 0 : if (!t)
566 0 : return NULL;
567 :
568 0 : return strappend("/org/freedesktop/login1/session/", t);
569 : }
570 :
571 0 : int session_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error) {
572 0 : _cleanup_strv_free_ char **l = NULL;
573 : sd_bus_message *message;
574 0 : Manager *m = userdata;
575 : Session *session;
576 : Iterator i;
577 : int r;
578 :
579 0 : assert(bus);
580 0 : assert(path);
581 0 : assert(nodes);
582 :
583 0 : HASHMAP_FOREACH(session, m->sessions, i) {
584 : char *p;
585 :
586 0 : p = session_bus_path(session);
587 0 : if (!p)
588 0 : return -ENOMEM;
589 :
590 0 : r = strv_consume(&l, p);
591 0 : if (r < 0)
592 0 : return r;
593 : }
594 :
595 0 : message = sd_bus_get_current_message(bus);
596 0 : if (message) {
597 0 : _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
598 : const char *name;
599 :
600 0 : r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_SESSION|SD_BUS_CREDS_AUGMENT, &creds);
601 0 : if (r >= 0) {
602 0 : r = sd_bus_creds_get_session(creds, &name);
603 0 : if (r >= 0) {
604 0 : session = hashmap_get(m->sessions, name);
605 0 : if (session) {
606 0 : r = strv_extend(&l, "/org/freedesktop/login1/session/self");
607 0 : if (r < 0)
608 0 : return r;
609 : }
610 : }
611 : }
612 : }
613 :
614 0 : *nodes = l;
615 0 : l = NULL;
616 :
617 0 : return 1;
618 : }
619 :
620 0 : int session_send_signal(Session *s, bool new_session) {
621 0 : _cleanup_free_ char *p = NULL;
622 :
623 0 : assert(s);
624 :
625 0 : p = session_bus_path(s);
626 0 : if (!p)
627 0 : return -ENOMEM;
628 :
629 0 : return sd_bus_emit_signal(
630 0 : s->manager->bus,
631 : "/org/freedesktop/login1",
632 : "org.freedesktop.login1.Manager",
633 : new_session ? "SessionNew" : "SessionRemoved",
634 : "so", s->id, p);
635 : }
636 :
637 0 : int session_send_changed(Session *s, const char *properties, ...) {
638 0 : _cleanup_free_ char *p = NULL;
639 : char **l;
640 :
641 0 : assert(s);
642 :
643 0 : if (!s->started)
644 0 : return 0;
645 :
646 0 : p = session_bus_path(s);
647 0 : if (!p)
648 0 : return -ENOMEM;
649 :
650 0 : l = strv_from_stdarg_alloca(properties);
651 :
652 0 : return sd_bus_emit_properties_changed_strv(s->manager->bus, p, "org.freedesktop.login1.Session", l);
653 : }
654 :
655 0 : int session_send_lock(Session *s, bool lock) {
656 0 : _cleanup_free_ char *p = NULL;
657 :
658 0 : assert(s);
659 :
660 0 : p = session_bus_path(s);
661 0 : if (!p)
662 0 : return -ENOMEM;
663 :
664 0 : return sd_bus_emit_signal(
665 0 : s->manager->bus,
666 : p,
667 : "org.freedesktop.login1.Session",
668 : lock ? "Lock" : "Unlock",
669 : NULL);
670 : }
671 :
672 0 : int session_send_lock_all(Manager *m, bool lock) {
673 : Session *session;
674 : Iterator i;
675 0 : int r = 0;
676 :
677 0 : assert(m);
678 :
679 0 : HASHMAP_FOREACH(session, m->sessions, i) {
680 : int k;
681 :
682 0 : k = session_send_lock(session, lock);
683 0 : if (k < 0)
684 0 : r = k;
685 : }
686 :
687 0 : return r;
688 : }
689 :
690 0 : int session_send_create_reply(Session *s, sd_bus_error *error) {
691 0 : _cleanup_bus_message_unref_ sd_bus_message *c = NULL;
692 0 : _cleanup_close_ int fifo_fd = -1;
693 0 : _cleanup_free_ char *p = NULL;
694 :
695 0 : assert(s);
696 :
697 : /* This is called after the session scope and the user service
698 : * were successfully created, and finishes where
699 : * bus_manager_create_session() left off. */
700 :
701 0 : if (!s->create_message)
702 0 : return 0;
703 :
704 0 : if (!sd_bus_error_is_set(error) && (s->scope_job || s->user->service_job))
705 0 : return 0;
706 :
707 0 : c = s->create_message;
708 0 : s->create_message = NULL;
709 :
710 0 : if (error)
711 0 : return sd_bus_reply_method_error(c, error);
712 :
713 0 : fifo_fd = session_create_fifo(s);
714 0 : if (fifo_fd < 0)
715 0 : return fifo_fd;
716 :
717 : /* Update the session state file before we notify the client
718 : * about the result. */
719 0 : session_save(s);
720 :
721 0 : p = session_bus_path(s);
722 0 : if (!p)
723 0 : return -ENOMEM;
724 :
725 0 : log_debug("Sending reply about created session: "
726 : "id=%s object_path=%s uid=%u runtime_path=%s "
727 : "session_fd=%d seat=%s vtnr=%u",
728 : s->id,
729 : p,
730 : (uint32_t) s->user->uid,
731 : s->user->runtime_path,
732 : fifo_fd,
733 : s->seat ? s->seat->id : "",
734 : (uint32_t) s->vtnr);
735 :
736 0 : return sd_bus_reply_method_return(
737 : c, "soshusub",
738 : s->id,
739 : p,
740 0 : s->user->runtime_path,
741 : fifo_fd,
742 0 : (uint32_t) s->user->uid,
743 0 : s->seat ? s->seat->id : "",
744 : (uint32_t) s->vtnr,
745 : false);
746 : }
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