]>
Commit | Line | Data |
---|---|---|
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 General Public License as published by | |
10 | the Free Software Foundation; either version 2 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 | General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU 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 | #include <unistd.h> | |
25 | #include <pwd.h> | |
26 | ||
27 | #include "logind.h" | |
28 | #include "dbus-common.h" | |
29 | #include "strv.h" | |
30 | #include "polkit.h" | |
31 | #include "special.h" | |
32 | ||
33 | #define BUS_MANAGER_INTERFACE \ | |
34 | " <interface name=\"org.freedesktop.login1.Manager\">\n" \ | |
35 | " <method name=\"GetSession\">\n" \ | |
36 | " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \ | |
37 | " <arg name=\"session\" type=\"o\" direction=\"out\"/>\n" \ | |
38 | " </method>\n" \ | |
39 | " <method name=\"GetSessionByPID\">\n" \ | |
40 | " <arg name=\"pid\" type=\"u\" direction=\"in\"/>\n" \ | |
41 | " <arg name=\"session\" type=\"o\" direction=\"out\"/>\n" \ | |
42 | " </method>\n" \ | |
43 | " <method name=\"GetUser\">\n" \ | |
44 | " <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n" \ | |
45 | " <arg name=\"user\" type=\"o\" direction=\"out\"/>\n" \ | |
46 | " </method>\n" \ | |
47 | " <method name=\"GetSeat\">\n" \ | |
48 | " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \ | |
49 | " <arg name=\"seat\" type=\"o\" direction=\"out\"/>\n" \ | |
50 | " </method>\n" \ | |
51 | " <method name=\"ListSessions\">\n" \ | |
52 | " <arg name=\"sessions\" type=\"a(susso)\" direction=\"out\"/>\n" \ | |
53 | " </method>\n" \ | |
54 | " <method name=\"ListUsers\">\n" \ | |
55 | " <arg name=\"users\" type=\"a(uso)\" direction=\"out\"/>\n" \ | |
56 | " </method>\n" \ | |
57 | " <method name=\"ListSeats\">\n" \ | |
58 | " <arg name=\"seats\" type=\"a(so)\" direction=\"out\"/>\n" \ | |
59 | " </method>\n" \ | |
60 | " <method name=\"CreateSession\">\n" \ | |
61 | " <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n" \ | |
62 | " <arg name=\"leader\" type=\"u\" direction=\"in\"/>\n" \ | |
63 | " <arg name=\"sevice\" type=\"s\" direction=\"in\"/>\n" \ | |
64 | " <arg name=\"type\" type=\"s\" direction=\"in\"/>\n" \ | |
65 | " <arg name=\"seat\" type=\"s\" direction=\"in\"/>\n" \ | |
66 | " <arg name=\"vtnr\" type=\"u\" direction=\"in\"/>\n" \ | |
67 | " <arg name=\"tty\" type=\"s\" direction=\"in\"/>\n" \ | |
68 | " <arg name=\"display\" type=\"s\" direction=\"in\"/>\n" \ | |
69 | " <arg name=\"remote\" type=\"b\" direction=\"in\"/>\n" \ | |
70 | " <arg name=\"remote_user\" type=\"s\" direction=\"in\"/>\n" \ | |
71 | " <arg name=\"remote_host\" type=\"s\" direction=\"in\"/>\n" \ | |
72 | " <arg name=\"controllers\" type=\"as\" direction=\"in\"/>\n" \ | |
73 | " <arg name=\"reset_controllers\" type=\"as\" direction=\"in\"/>\n" \ | |
74 | " <arg name=\"kill_processes\" type=\"b\" direction=\"in\"/>\n" \ | |
75 | " <arg name=\"id\" type=\"s\" direction=\"out\"/>\n" \ | |
76 | " <arg name=\"path\" type=\"o\" direction=\"out\"/>\n" \ | |
77 | " <arg name=\"runtime_path\" type=\"o\" direction=\"out\"/>\n" \ | |
78 | " <arg name=\"fd\" type=\"h\" direction=\"out\"/>\n" \ | |
79 | " <arg name=\"seat\" type=\"s\" direction=\"out\"/>\n" \ | |
80 | " <arg name=\"vtnr\" type=\"u\" direction=\"out\"/>\n" \ | |
81 | " </method>\n" \ | |
82 | " <method name=\"ActivateSession\">\n" \ | |
83 | " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \ | |
84 | " </method>\n" \ | |
85 | " <method name=\"ActivateSessionOnSeat\">\n" \ | |
86 | " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \ | |
87 | " <arg name=\"seat\" type=\"s\" direction=\"in\"/>\n" \ | |
88 | " </method>\n" \ | |
89 | " <method name=\"LockSession\">\n" \ | |
90 | " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \ | |
91 | " </method>\n" \ | |
92 | " <method name=\"UnlockSession\">\n" \ | |
93 | " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \ | |
94 | " </method>\n" \ | |
95 | " <method name=\"KillSession\">\n" \ | |
96 | " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \ | |
97 | " <arg name=\"who\" type=\"s\" direction=\"in\"/>\n" \ | |
98 | " <arg name=\"signal\" type=\"s\" direction=\"in\"/>\n" \ | |
99 | " </method>\n" \ | |
100 | " <method name=\"KillUser\">\n" \ | |
101 | " <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n" \ | |
102 | " <arg name=\"signal\" type=\"s\" direction=\"in\"/>\n" \ | |
103 | " </method>\n" \ | |
104 | " <method name=\"TerminateSession\">\n" \ | |
105 | " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \ | |
106 | " </method>\n" \ | |
107 | " <method name=\"TerminateUser\">\n" \ | |
108 | " <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n" \ | |
109 | " </method>\n" \ | |
110 | " <method name=\"TerminateSeat\">\n" \ | |
111 | " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \ | |
112 | " </method>\n" \ | |
113 | " <method name=\"SetUserLinger\">\n" \ | |
114 | " <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n" \ | |
115 | " <arg name=\"b\" type=\"b\" direction=\"in\"/>\n" \ | |
116 | " <arg name=\"interactive\" type=\"b\" direction=\"in\"/>\n" \ | |
117 | " </method>\n" \ | |
118 | " <method name=\"AttachDevice\">\n" \ | |
119 | " <arg name=\"seat\" type=\"s\" direction=\"in\"/>\n" \ | |
120 | " <arg name=\"sysfs\" type=\"s\" direction=\"in\"/>\n" \ | |
121 | " <arg name=\"interactive\" type=\"b\" direction=\"in\"/>\n" \ | |
122 | " </method>\n" \ | |
123 | " <method name=\"FlushDevices\">\n" \ | |
124 | " <arg name=\"interactive\" type=\"b\" direction=\"in\"/>\n" \ | |
125 | " </method>\n" \ | |
126 | " <method name=\"PowerOff\">\n" \ | |
127 | " <arg name=\"interactive\" type=\"b\" direction=\"in\"/>\n" \ | |
128 | " </method>\n" \ | |
129 | " <method name=\"Reboot\">\n" \ | |
130 | " <arg name=\"interactive\" type=\"b\" direction=\"in\"/>\n" \ | |
131 | " </method>\n" \ | |
132 | " <method name=\"CanPowerOff\">\n" \ | |
133 | " <arg name=\"result\" type=\"s\" direction=\"out\"/>\n" \ | |
134 | " </method>\n" \ | |
135 | " <method name=\"CanReboot\">\n" \ | |
136 | " <arg name=\"result\" type=\"s\" direction=\"out\"/>\n" \ | |
137 | " </method>\n" \ | |
138 | " <signal name=\"SessionNew\">\n" \ | |
139 | " <arg name=\"id\" type=\"s\"/>\n" \ | |
140 | " <arg name=\"path\" type=\"o\"/>\n" \ | |
141 | " </signal>\n" \ | |
142 | " <signal name=\"SessionRemoved\">\n" \ | |
143 | " <arg name=\"id\" type=\"s\"/>\n" \ | |
144 | " <arg name=\"path\" type=\"o\"/>\n" \ | |
145 | " </signal>\n" \ | |
146 | " <signal name=\"UserNew\">\n" \ | |
147 | " <arg name=\"uid\" type=\"u\"/>\n" \ | |
148 | " <arg name=\"path\" type=\"o\"/>\n" \ | |
149 | " </signal>\n" \ | |
150 | " <signal name=\"UserRemoved\">\n" \ | |
151 | " <arg name=\"uid\" type=\"u\"/>\n" \ | |
152 | " <arg name=\"path\" type=\"o\"/>\n" \ | |
153 | " </signal>\n" \ | |
154 | " <signal name=\"SeatNew\">\n" \ | |
155 | " <arg name=\"id\" type=\"s\"/>\n" \ | |
156 | " <arg name=\"path\" type=\"o\"/>\n" \ | |
157 | " </signal>\n" \ | |
158 | " <signal name=\"SeatRemoved\">\n" \ | |
159 | " <arg name=\"id\" type=\"s\"/>\n" \ | |
160 | " <arg name=\"path\" type=\"o\"/>\n" \ | |
161 | " </signal>\n" \ | |
162 | " <property name=\"ControlGroupHierarchy\" type=\"s\" access=\"read\"/>\n" \ | |
163 | " <property name=\"Controllers\" type=\"as\" access=\"read\"/>\n" \ | |
164 | " <property name=\"ResetControllers\" type=\"as\" access=\"read\"/>\n" \ | |
165 | " <property name=\"NAutoVTs\" type=\"u\" access=\"read\"/>\n" \ | |
166 | " <property name=\"KillOnlyUsers\" type=\"as\" access=\"read\"/>\n" \ | |
167 | " <property name=\"KillExcludeUsers\" type=\"as\" access=\"read\"/>\n" \ | |
168 | " <property name=\"KillUserProcesses\" type=\"b\" access=\"read\"/>\n" \ | |
169 | " <property name=\"IdleHint\" type=\"b\" access=\"read\"/>\n" \ | |
170 | " <property name=\"IdleSinceHint\" type=\"t\" access=\"read\"/>\n" \ | |
171 | " <property name=\"IdleSinceHintMonotonic\" type=\"t\" access=\"read\"/>\n" \ | |
172 | " </interface>\n" | |
173 | ||
174 | #define INTROSPECTION_BEGIN \ | |
175 | DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \ | |
176 | "<node>\n" \ | |
177 | BUS_MANAGER_INTERFACE \ | |
178 | BUS_PROPERTIES_INTERFACE \ | |
179 | BUS_PEER_INTERFACE \ | |
180 | BUS_INTROSPECTABLE_INTERFACE | |
181 | ||
182 | #define INTROSPECTION_END \ | |
183 | "</node>\n" | |
184 | ||
185 | #define INTERFACES_LIST \ | |
186 | BUS_GENERIC_INTERFACES_LIST \ | |
187 | "org.freedesktop.login1.Manager\0" | |
188 | ||
189 | static int bus_manager_append_idle_hint(DBusMessageIter *i, const char *property, void *data) { | |
190 | Manager *m = data; | |
191 | dbus_bool_t b; | |
192 | ||
193 | assert(i); | |
194 | assert(property); | |
195 | assert(m); | |
196 | ||
197 | b = manager_get_idle_hint(m, NULL) > 0; | |
198 | if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b)) | |
199 | return -ENOMEM; | |
200 | ||
201 | return 0; | |
202 | } | |
203 | ||
204 | static int bus_manager_append_idle_hint_since(DBusMessageIter *i, const char *property, void *data) { | |
205 | Manager *m = data; | |
206 | dual_timestamp t; | |
207 | uint64_t u; | |
208 | ||
209 | assert(i); | |
210 | assert(property); | |
211 | assert(m); | |
212 | ||
213 | manager_get_idle_hint(m, &t); | |
214 | u = streq(property, "IdleSinceHint") ? t.realtime : t.monotonic; | |
215 | ||
216 | if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT64, &u)) | |
217 | return -ENOMEM; | |
218 | ||
219 | return 0; | |
220 | } | |
221 | ||
222 | static int bus_manager_create_session(Manager *m, DBusMessage *message, DBusMessage **_reply) { | |
223 | Session *session = NULL; | |
224 | User *user = NULL; | |
225 | const char *type, *seat, *tty, *display, *remote_user, *remote_host, *service; | |
226 | uint32_t uid, leader, audit_id = 0; | |
227 | dbus_bool_t remote, kill_processes; | |
228 | char **controllers = NULL, **reset_controllers = NULL; | |
229 | SessionType t; | |
230 | Seat *s; | |
231 | DBusMessageIter iter; | |
232 | int r; | |
233 | char *id = NULL, *p; | |
234 | uint32_t vtnr = 0; | |
235 | int fifo_fd = -1; | |
236 | DBusMessage *reply = NULL; | |
237 | bool b; | |
238 | ||
239 | assert(m); | |
240 | assert(message); | |
241 | assert(_reply); | |
242 | ||
243 | if (!dbus_message_iter_init(message, &iter) || | |
244 | dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_UINT32) | |
245 | return -EINVAL; | |
246 | ||
247 | dbus_message_iter_get_basic(&iter, &uid); | |
248 | ||
249 | if (!dbus_message_iter_next(&iter) || | |
250 | dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_UINT32) | |
251 | return -EINVAL; | |
252 | ||
253 | dbus_message_iter_get_basic(&iter, &leader); | |
254 | ||
255 | if (leader <= 0 || | |
256 | !dbus_message_iter_next(&iter) || | |
257 | dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING) | |
258 | return -EINVAL; | |
259 | ||
260 | dbus_message_iter_get_basic(&iter, &service); | |
261 | ||
262 | if (!dbus_message_iter_next(&iter) || | |
263 | dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING) | |
264 | return -EINVAL; | |
265 | ||
266 | dbus_message_iter_get_basic(&iter, &type); | |
267 | t = session_type_from_string(type); | |
268 | ||
269 | if (t < 0 || | |
270 | !dbus_message_iter_next(&iter) || | |
271 | dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING) | |
272 | return -EINVAL; | |
273 | ||
274 | dbus_message_iter_get_basic(&iter, &seat); | |
275 | ||
276 | if (isempty(seat)) | |
277 | s = NULL; | |
278 | else { | |
279 | s = hashmap_get(m->seats, seat); | |
280 | if (!s) | |
281 | return -ENOENT; | |
282 | } | |
283 | ||
284 | if (!dbus_message_iter_next(&iter) || | |
285 | dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_UINT32) | |
286 | return -EINVAL; | |
287 | ||
288 | dbus_message_iter_get_basic(&iter, &vtnr); | |
289 | ||
290 | if (!dbus_message_iter_next(&iter) || | |
291 | dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING) | |
292 | return -EINVAL; | |
293 | ||
294 | dbus_message_iter_get_basic(&iter, &tty); | |
295 | ||
296 | if (tty_is_vc(tty)) { | |
297 | int v; | |
298 | ||
299 | if (!s) | |
300 | s = m->vtconsole; | |
301 | else if (s != m->vtconsole) | |
302 | return -EINVAL; | |
303 | ||
304 | v = vtnr_from_tty(tty); | |
305 | ||
306 | if (v <= 0) | |
307 | return v < 0 ? v : -EINVAL; | |
308 | ||
309 | if (vtnr <= 0) | |
310 | vtnr = (uint32_t) v; | |
311 | else if (vtnr != (uint32_t) v) | |
312 | return -EINVAL; | |
313 | ||
314 | } else if (!isempty(tty) && s && seat_is_vtconsole(s)) | |
315 | return -EINVAL; | |
316 | ||
317 | if (s) { | |
318 | if (seat_can_multi_session(s)) { | |
319 | if (vtnr <= 0 || vtnr > 63) | |
320 | return -EINVAL; | |
321 | } else { | |
322 | if (vtnr > 0) | |
323 | return -EINVAL; | |
324 | } | |
325 | } | |
326 | ||
327 | if (!dbus_message_iter_next(&iter) || | |
328 | dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING) | |
329 | return -EINVAL; | |
330 | ||
331 | dbus_message_iter_get_basic(&iter, &display); | |
332 | ||
333 | if (!dbus_message_iter_next(&iter) || | |
334 | dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_BOOLEAN) | |
335 | return -EINVAL; | |
336 | ||
337 | dbus_message_iter_get_basic(&iter, &remote); | |
338 | ||
339 | if (!dbus_message_iter_next(&iter) || | |
340 | dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING) | |
341 | return -EINVAL; | |
342 | ||
343 | dbus_message_iter_get_basic(&iter, &remote_user); | |
344 | ||
345 | if (!dbus_message_iter_next(&iter) || | |
346 | dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING) | |
347 | return -EINVAL; | |
348 | ||
349 | dbus_message_iter_get_basic(&iter, &remote_host); | |
350 | ||
351 | if (!dbus_message_iter_next(&iter) || | |
352 | dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY || | |
353 | dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRING) | |
354 | return -EINVAL; | |
355 | ||
356 | r = bus_parse_strv_iter(&iter, &controllers); | |
357 | if (r < 0) | |
358 | return -EINVAL; | |
359 | ||
360 | if (strv_contains(controllers, "systemd") || | |
361 | !dbus_message_iter_next(&iter) || | |
362 | dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY || | |
363 | dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRING) { | |
364 | r = -EINVAL; | |
365 | goto fail; | |
366 | } | |
367 | ||
368 | r = bus_parse_strv_iter(&iter, &reset_controllers); | |
369 | if (r < 0) | |
370 | goto fail; | |
371 | ||
372 | if (strv_contains(reset_controllers, "systemd") || | |
373 | !dbus_message_iter_next(&iter) || | |
374 | dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_BOOLEAN) { | |
375 | r = -EINVAL; | |
376 | goto fail; | |
377 | } | |
378 | ||
379 | dbus_message_iter_get_basic(&iter, &kill_processes); | |
380 | ||
381 | r = manager_add_user_by_uid(m, uid, &user); | |
382 | if (r < 0) | |
383 | goto fail; | |
384 | ||
385 | audit_session_from_pid(leader, &audit_id); | |
386 | ||
387 | if (audit_id > 0) { | |
388 | asprintf(&id, "%lu", (unsigned long) audit_id); | |
389 | ||
390 | if (!id) { | |
391 | r = -ENOMEM; | |
392 | goto fail; | |
393 | } | |
394 | ||
395 | session = hashmap_get(m->sessions, id); | |
396 | ||
397 | if (session) { | |
398 | free(id); | |
399 | ||
400 | fifo_fd = session_create_fifo(session); | |
401 | if (fifo_fd < 0) { | |
402 | r = fifo_fd; | |
403 | goto fail; | |
404 | } | |
405 | ||
406 | /* Session already exists, client is probably | |
407 | * something like "su" which changes uid but | |
408 | * is still the same audit session */ | |
409 | ||
410 | reply = dbus_message_new_method_return(message); | |
411 | if (!reply) { | |
412 | r = -ENOMEM; | |
413 | goto fail; | |
414 | } | |
415 | ||
416 | p = session_bus_path(session); | |
417 | if (!p) { | |
418 | r = -ENOMEM; | |
419 | goto fail; | |
420 | } | |
421 | ||
422 | seat = session->seat ? session->seat->id : ""; | |
423 | vtnr = session->vtnr; | |
424 | b = dbus_message_append_args( | |
425 | reply, | |
426 | DBUS_TYPE_STRING, &session->id, | |
427 | DBUS_TYPE_OBJECT_PATH, &p, | |
428 | DBUS_TYPE_STRING, &session->user->runtime_path, | |
429 | DBUS_TYPE_UNIX_FD, &fifo_fd, | |
430 | DBUS_TYPE_STRING, &seat, | |
431 | DBUS_TYPE_UINT32, &vtnr, | |
432 | DBUS_TYPE_INVALID); | |
433 | free(p); | |
434 | ||
435 | if (!b) { | |
436 | r = -ENOMEM; | |
437 | goto fail; | |
438 | } | |
439 | ||
440 | close_nointr_nofail(fifo_fd); | |
441 | *_reply = reply; | |
442 | ||
443 | strv_free(controllers); | |
444 | strv_free(reset_controllers); | |
445 | ||
446 | return 0; | |
447 | } | |
448 | ||
449 | } else { | |
450 | do { | |
451 | free(id); | |
452 | asprintf(&id, "c%lu", ++m->session_counter); | |
453 | ||
454 | if (!id) { | |
455 | r = -ENOMEM; | |
456 | goto fail; | |
457 | } | |
458 | ||
459 | } while (hashmap_get(m->sessions, id)); | |
460 | } | |
461 | ||
462 | r = manager_add_session(m, user, id, &session); | |
463 | free(id); | |
464 | if (r < 0) | |
465 | goto fail; | |
466 | ||
467 | session->leader = leader; | |
468 | session->audit_id = audit_id; | |
469 | session->type = t; | |
470 | session->remote = remote; | |
471 | session->controllers = controllers; | |
472 | session->reset_controllers = reset_controllers; | |
473 | session->kill_processes = kill_processes; | |
474 | session->vtnr = vtnr; | |
475 | ||
476 | controllers = reset_controllers = NULL; | |
477 | ||
478 | if (!isempty(tty)) { | |
479 | session->tty = strdup(tty); | |
480 | if (!session->tty) { | |
481 | r = -ENOMEM; | |
482 | goto fail; | |
483 | } | |
484 | } | |
485 | ||
486 | if (!isempty(display)) { | |
487 | session->display = strdup(display); | |
488 | if (!session->display) { | |
489 | r = -ENOMEM; | |
490 | goto fail; | |
491 | } | |
492 | } | |
493 | ||
494 | if (!isempty(remote_user)) { | |
495 | session->remote_user = strdup(remote_user); | |
496 | if (!session->remote_user) { | |
497 | r = -ENOMEM; | |
498 | goto fail; | |
499 | } | |
500 | } | |
501 | ||
502 | if (!isempty(remote_host)) { | |
503 | session->remote_host = strdup(remote_host); | |
504 | if (!session->remote_host) { | |
505 | r = -ENOMEM; | |
506 | goto fail; | |
507 | } | |
508 | } | |
509 | ||
510 | if (!isempty(service)) { | |
511 | session->service = strdup(service); | |
512 | if (!session->service) { | |
513 | r = -ENOMEM; | |
514 | goto fail; | |
515 | } | |
516 | } | |
517 | ||
518 | fifo_fd = session_create_fifo(session); | |
519 | if (fifo_fd < 0) { | |
520 | r = fifo_fd; | |
521 | goto fail; | |
522 | } | |
523 | ||
524 | if (s) { | |
525 | r = seat_attach_session(s, session); | |
526 | if (r < 0) | |
527 | goto fail; | |
528 | } | |
529 | ||
530 | r = session_start(session); | |
531 | if (r < 0) | |
532 | goto fail; | |
533 | ||
534 | reply = dbus_message_new_method_return(message); | |
535 | if (!reply) { | |
536 | r = -ENOMEM; | |
537 | goto fail; | |
538 | } | |
539 | ||
540 | p = session_bus_path(session); | |
541 | if (!p) { | |
542 | r = -ENOMEM; | |
543 | goto fail; | |
544 | } | |
545 | ||
546 | seat = s ? s->id : ""; | |
547 | b = dbus_message_append_args( | |
548 | reply, | |
549 | DBUS_TYPE_STRING, &session->id, | |
550 | DBUS_TYPE_OBJECT_PATH, &p, | |
551 | DBUS_TYPE_STRING, &session->user->runtime_path, | |
552 | DBUS_TYPE_UNIX_FD, &fifo_fd, | |
553 | DBUS_TYPE_STRING, &seat, | |
554 | DBUS_TYPE_UINT32, &vtnr, | |
555 | DBUS_TYPE_INVALID); | |
556 | free(p); | |
557 | ||
558 | if (!b) { | |
559 | r = -ENOMEM; | |
560 | goto fail; | |
561 | } | |
562 | ||
563 | close_nointr_nofail(fifo_fd); | |
564 | *_reply = reply; | |
565 | ||
566 | return 0; | |
567 | ||
568 | fail: | |
569 | strv_free(controllers); | |
570 | strv_free(reset_controllers); | |
571 | ||
572 | if (session) | |
573 | session_add_to_gc_queue(session); | |
574 | ||
575 | if (user) | |
576 | user_add_to_gc_queue(user); | |
577 | ||
578 | if (fifo_fd >= 0) | |
579 | close_nointr_nofail(fifo_fd); | |
580 | ||
581 | if (reply) | |
582 | dbus_message_unref(reply); | |
583 | ||
584 | return r; | |
585 | } | |
586 | ||
587 | static int trigger_device(Manager *m, struct udev_device *d) { | |
588 | struct udev_enumerate *e; | |
589 | struct udev_list_entry *first, *item; | |
590 | int r; | |
591 | ||
592 | assert(m); | |
593 | ||
594 | e = udev_enumerate_new(m->udev); | |
595 | if (!e) { | |
596 | r = -ENOMEM; | |
597 | goto finish; | |
598 | } | |
599 | ||
600 | if (d) { | |
601 | if (udev_enumerate_add_match_parent(e, d) < 0) { | |
602 | r = -EIO; | |
603 | goto finish; | |
604 | } | |
605 | } | |
606 | ||
607 | if (udev_enumerate_scan_devices(e) < 0) { | |
608 | r = -EIO; | |
609 | goto finish; | |
610 | } | |
611 | ||
612 | first = udev_enumerate_get_list_entry(e); | |
613 | udev_list_entry_foreach(item, first) { | |
614 | char *t; | |
615 | const char *p; | |
616 | ||
617 | p = udev_list_entry_get_name(item); | |
618 | ||
619 | t = strappend(p, "/uevent"); | |
620 | if (!t) { | |
621 | r = -ENOMEM; | |
622 | goto finish; | |
623 | } | |
624 | ||
625 | write_one_line_file(t, "change"); | |
626 | free(t); | |
627 | } | |
628 | ||
629 | r = 0; | |
630 | ||
631 | finish: | |
632 | if (e) | |
633 | udev_enumerate_unref(e); | |
634 | ||
635 | return r; | |
636 | } | |
637 | ||
638 | static int attach_device(Manager *m, const char *seat, const char *sysfs) { | |
639 | struct udev_device *d; | |
640 | char *rule = NULL, *file = NULL; | |
641 | const char *id_for_seat; | |
642 | int r; | |
643 | ||
644 | assert(m); | |
645 | assert(seat); | |
646 | assert(sysfs); | |
647 | ||
648 | d = udev_device_new_from_syspath(m->udev, sysfs); | |
649 | if (!d) | |
650 | return -ENODEV; | |
651 | ||
652 | if (!udev_device_has_tag(d, "seat")) { | |
653 | r = -ENODEV; | |
654 | goto finish; | |
655 | } | |
656 | ||
657 | id_for_seat = udev_device_get_property_value(d, "ID_FOR_SEAT"); | |
658 | if (!id_for_seat) { | |
659 | r = -ENODEV; | |
660 | goto finish; | |
661 | } | |
662 | ||
663 | if (asprintf(&file, "/etc/udev/rules.d/72-seat-%s.rules", id_for_seat) < 0) { | |
664 | r = -ENOMEM; | |
665 | goto finish; | |
666 | } | |
667 | ||
668 | if (asprintf(&rule, "TAG==\"seat\", ENV{ID_FOR_SEAT}==\"%s\", ENV{ID_SEAT}=\"%s\"", id_for_seat, seat) < 0) { | |
669 | r = -ENOMEM; | |
670 | goto finish; | |
671 | } | |
672 | ||
673 | mkdir_p("/etc/udev/rules.d", 0755); | |
674 | r = write_one_line_file_atomic(file, rule); | |
675 | if (r < 0) | |
676 | goto finish; | |
677 | ||
678 | r = trigger_device(m, d); | |
679 | ||
680 | finish: | |
681 | free(rule); | |
682 | free(file); | |
683 | ||
684 | if (d) | |
685 | udev_device_unref(d); | |
686 | ||
687 | return r; | |
688 | } | |
689 | ||
690 | static int flush_devices(Manager *m) { | |
691 | DIR *d; | |
692 | ||
693 | assert(m); | |
694 | ||
695 | d = opendir("/etc/udev/rules.d"); | |
696 | if (!d) { | |
697 | if (errno != ENOENT) | |
698 | log_warning("Failed to open /etc/udev/rules.d: %m"); | |
699 | } else { | |
700 | struct dirent *de; | |
701 | ||
702 | while ((de = readdir(d))) { | |
703 | ||
704 | if (!dirent_is_file(de)) | |
705 | continue; | |
706 | ||
707 | if (!startswith(de->d_name, "72-seat-")) | |
708 | continue; | |
709 | ||
710 | if (!endswith(de->d_name, ".rules")) | |
711 | continue; | |
712 | ||
713 | if (unlinkat(dirfd(d), de->d_name, 0) < 0) | |
714 | log_warning("Failed to unlink %s: %m", de->d_name); | |
715 | } | |
716 | ||
717 | closedir(d); | |
718 | } | |
719 | ||
720 | return trigger_device(m, NULL); | |
721 | } | |
722 | ||
723 | static int have_multiple_sessions( | |
724 | DBusConnection *connection, | |
725 | Manager *m, | |
726 | DBusMessage *message, | |
727 | DBusError *error) { | |
728 | ||
729 | Session *s; | |
730 | ||
731 | assert(m); | |
732 | ||
733 | if (hashmap_size(m->sessions) > 1) | |
734 | return true; | |
735 | ||
736 | /* Hmm, there's only one session, but let's make sure it | |
737 | * actually belongs to the user who is asking. If not, better | |
738 | * be safe than sorry. */ | |
739 | ||
740 | s = hashmap_first(m->sessions); | |
741 | if (s) { | |
742 | unsigned long ul; | |
743 | ||
744 | ul = dbus_bus_get_unix_user(connection, dbus_message_get_sender(message), error); | |
745 | if (ul == (unsigned long) -1) | |
746 | return -EIO; | |
747 | ||
748 | return s->user->uid != ul; | |
749 | } | |
750 | ||
751 | return false; | |
752 | } | |
753 | ||
754 | static const BusProperty bus_login_manager_properties[] = { | |
755 | { "ControlGroupHierarchy", bus_property_append_string, "s", offsetof(Manager, cgroup_path), true }, | |
756 | { "Controllers", bus_property_append_strv, "as", offsetof(Manager, controllers), true }, | |
757 | { "ResetControllers", bus_property_append_strv, "as", offsetof(Manager, reset_controllers), true }, | |
758 | { "NAutoVTs", bus_property_append_unsigned, "u", offsetof(Manager, n_autovts) }, | |
759 | { "KillOnlyUsers", bus_property_append_strv, "as", offsetof(Manager, kill_only_users), true }, | |
760 | { "KillExcludeUsers", bus_property_append_strv, "as", offsetof(Manager, kill_exclude_users), true }, | |
761 | { "KillUserProcesses", bus_property_append_bool, "b", offsetof(Manager, kill_user_processes) }, | |
762 | { "IdleHint", bus_manager_append_idle_hint, "b", 0 }, | |
763 | { "IdleSinceHint", bus_manager_append_idle_hint_since, "t", 0 }, | |
764 | { "IdleSinceHintMonotonic", bus_manager_append_idle_hint_since, "t", 0 }, | |
765 | { NULL, } | |
766 | }; | |
767 | ||
768 | static DBusHandlerResult manager_message_handler( | |
769 | DBusConnection *connection, | |
770 | DBusMessage *message, | |
771 | void *userdata) { | |
772 | ||
773 | Manager *m = userdata; | |
774 | ||
775 | DBusError error; | |
776 | DBusMessage *reply = NULL; | |
777 | int r; | |
778 | ||
779 | assert(connection); | |
780 | assert(message); | |
781 | assert(m); | |
782 | ||
783 | dbus_error_init(&error); | |
784 | ||
785 | if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetSession")) { | |
786 | const char *name; | |
787 | char *p; | |
788 | Session *session; | |
789 | bool b; | |
790 | ||
791 | if (!dbus_message_get_args( | |
792 | message, | |
793 | &error, | |
794 | DBUS_TYPE_STRING, &name, | |
795 | DBUS_TYPE_INVALID)) | |
796 | return bus_send_error_reply(connection, message, &error, -EINVAL); | |
797 | ||
798 | session = hashmap_get(m->sessions, name); | |
799 | if (!session) | |
800 | return bus_send_error_reply(connection, message, &error, -ENOENT); | |
801 | ||
802 | reply = dbus_message_new_method_return(message); | |
803 | if (!reply) | |
804 | goto oom; | |
805 | ||
806 | p = session_bus_path(session); | |
807 | if (!p) | |
808 | goto oom; | |
809 | ||
810 | b = dbus_message_append_args( | |
811 | reply, | |
812 | DBUS_TYPE_OBJECT_PATH, &p, | |
813 | DBUS_TYPE_INVALID); | |
814 | free(p); | |
815 | ||
816 | if (!b) | |
817 | goto oom; | |
818 | ||
819 | } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetSessionByPID")) { | |
820 | uint32_t pid; | |
821 | char *p; | |
822 | Session *session; | |
823 | bool b; | |
824 | ||
825 | if (!dbus_message_get_args( | |
826 | message, | |
827 | &error, | |
828 | DBUS_TYPE_UINT32, &pid, | |
829 | DBUS_TYPE_INVALID)) | |
830 | return bus_send_error_reply(connection, message, &error, -EINVAL); | |
831 | ||
832 | r = manager_get_session_by_pid(m, pid, &session); | |
833 | if (r <= 0) | |
834 | return bus_send_error_reply(connection, message, NULL, r < 0 ? r : -ENOENT); | |
835 | ||
836 | reply = dbus_message_new_method_return(message); | |
837 | if (!reply) | |
838 | goto oom; | |
839 | ||
840 | p = session_bus_path(session); | |
841 | if (!p) | |
842 | goto oom; | |
843 | ||
844 | b = dbus_message_append_args( | |
845 | reply, | |
846 | DBUS_TYPE_OBJECT_PATH, &p, | |
847 | DBUS_TYPE_INVALID); | |
848 | free(p); | |
849 | ||
850 | if (!b) | |
851 | goto oom; | |
852 | ||
853 | } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetUser")) { | |
854 | uint32_t uid; | |
855 | char *p; | |
856 | User *user; | |
857 | bool b; | |
858 | ||
859 | if (!dbus_message_get_args( | |
860 | message, | |
861 | &error, | |
862 | DBUS_TYPE_UINT32, &uid, | |
863 | DBUS_TYPE_INVALID)) | |
864 | return bus_send_error_reply(connection, message, &error, -EINVAL); | |
865 | ||
866 | user = hashmap_get(m->users, ULONG_TO_PTR((unsigned long) uid)); | |
867 | if (!user) | |
868 | return bus_send_error_reply(connection, message, &error, -ENOENT); | |
869 | ||
870 | reply = dbus_message_new_method_return(message); | |
871 | if (!reply) | |
872 | goto oom; | |
873 | ||
874 | p = user_bus_path(user); | |
875 | if (!p) | |
876 | goto oom; | |
877 | ||
878 | b = dbus_message_append_args( | |
879 | reply, | |
880 | DBUS_TYPE_OBJECT_PATH, &p, | |
881 | DBUS_TYPE_INVALID); | |
882 | free(p); | |
883 | ||
884 | if (!b) | |
885 | goto oom; | |
886 | ||
887 | } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetSeat")) { | |
888 | const char *name; | |
889 | char *p; | |
890 | Seat *seat; | |
891 | bool b; | |
892 | ||
893 | if (!dbus_message_get_args( | |
894 | message, | |
895 | &error, | |
896 | DBUS_TYPE_STRING, &name, | |
897 | DBUS_TYPE_INVALID)) | |
898 | return bus_send_error_reply(connection, message, &error, -EINVAL); | |
899 | ||
900 | seat = hashmap_get(m->seats, name); | |
901 | if (!seat) | |
902 | return bus_send_error_reply(connection, message, &error, -ENOENT); | |
903 | ||
904 | reply = dbus_message_new_method_return(message); | |
905 | if (!reply) | |
906 | goto oom; | |
907 | ||
908 | p = seat_bus_path(seat); | |
909 | if (!p) | |
910 | goto oom; | |
911 | ||
912 | b = dbus_message_append_args( | |
913 | reply, | |
914 | DBUS_TYPE_OBJECT_PATH, &p, | |
915 | DBUS_TYPE_INVALID); | |
916 | free(p); | |
917 | ||
918 | if (!b) | |
919 | goto oom; | |
920 | ||
921 | } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ListSessions")) { | |
922 | char *p; | |
923 | Session *session; | |
924 | Iterator i; | |
925 | DBusMessageIter iter, sub; | |
926 | const char *empty = ""; | |
927 | ||
928 | reply = dbus_message_new_method_return(message); | |
929 | if (!reply) | |
930 | goto oom; | |
931 | ||
932 | dbus_message_iter_init_append(reply, &iter); | |
933 | ||
934 | if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(susso)", &sub)) | |
935 | goto oom; | |
936 | ||
937 | HASHMAP_FOREACH(session, m->sessions, i) { | |
938 | DBusMessageIter sub2; | |
939 | uint32_t uid; | |
940 | ||
941 | if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2)) | |
942 | goto oom; | |
943 | ||
944 | uid = session->user->uid; | |
945 | ||
946 | p = session_bus_path(session); | |
947 | if (!p) | |
948 | goto oom; | |
949 | ||
950 | if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &session->id) || | |
951 | !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &uid) || | |
952 | !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &session->user->name) || | |
953 | !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, session->seat ? (const char**) &session->seat->id : &empty) || | |
954 | !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &p)) { | |
955 | free(p); | |
956 | goto oom; | |
957 | } | |
958 | ||
959 | free(p); | |
960 | ||
961 | if (!dbus_message_iter_close_container(&sub, &sub2)) | |
962 | goto oom; | |
963 | } | |
964 | ||
965 | if (!dbus_message_iter_close_container(&iter, &sub)) | |
966 | goto oom; | |
967 | ||
968 | } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ListUsers")) { | |
969 | char *p; | |
970 | User *user; | |
971 | Iterator i; | |
972 | DBusMessageIter iter, sub; | |
973 | ||
974 | reply = dbus_message_new_method_return(message); | |
975 | if (!reply) | |
976 | goto oom; | |
977 | ||
978 | dbus_message_iter_init_append(reply, &iter); | |
979 | ||
980 | if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(uso)", &sub)) | |
981 | goto oom; | |
982 | ||
983 | HASHMAP_FOREACH(user, m->users, i) { | |
984 | DBusMessageIter sub2; | |
985 | uint32_t uid; | |
986 | ||
987 | if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2)) | |
988 | goto oom; | |
989 | ||
990 | uid = user->uid; | |
991 | ||
992 | p = user_bus_path(user); | |
993 | if (!p) | |
994 | goto oom; | |
995 | ||
996 | if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &uid) || | |
997 | !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &user->name) || | |
998 | !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &p)) { | |
999 | free(p); | |
1000 | goto oom; | |
1001 | } | |
1002 | ||
1003 | free(p); | |
1004 | ||
1005 | if (!dbus_message_iter_close_container(&sub, &sub2)) | |
1006 | goto oom; | |
1007 | } | |
1008 | ||
1009 | if (!dbus_message_iter_close_container(&iter, &sub)) | |
1010 | goto oom; | |
1011 | ||
1012 | } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ListSeats")) { | |
1013 | char *p; | |
1014 | Seat *seat; | |
1015 | Iterator i; | |
1016 | DBusMessageIter iter, sub; | |
1017 | ||
1018 | reply = dbus_message_new_method_return(message); | |
1019 | if (!reply) | |
1020 | goto oom; | |
1021 | ||
1022 | dbus_message_iter_init_append(reply, &iter); | |
1023 | ||
1024 | if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(so)", &sub)) | |
1025 | goto oom; | |
1026 | ||
1027 | HASHMAP_FOREACH(seat, m->seats, i) { | |
1028 | DBusMessageIter sub2; | |
1029 | ||
1030 | if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2)) | |
1031 | goto oom; | |
1032 | ||
1033 | p = seat_bus_path(seat); | |
1034 | if (!p) | |
1035 | goto oom; | |
1036 | ||
1037 | if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &seat->id) || | |
1038 | !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &p)) { | |
1039 | free(p); | |
1040 | goto oom; | |
1041 | } | |
1042 | ||
1043 | free(p); | |
1044 | ||
1045 | if (!dbus_message_iter_close_container(&sub, &sub2)) | |
1046 | goto oom; | |
1047 | } | |
1048 | ||
1049 | if (!dbus_message_iter_close_container(&iter, &sub)) | |
1050 | goto oom; | |
1051 | ||
1052 | } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "CreateSession")) { | |
1053 | ||
1054 | r = bus_manager_create_session(m, message, &reply); | |
1055 | ||
1056 | /* Don't delay the work on OOM here, since it might be | |
1057 | * triggered by a low RLIMIT_NOFILE here (since we | |
1058 | * send a dupped fd to the client), and we'd rather | |
1059 | * see this fail quickly then be retried later */ | |
1060 | ||
1061 | if (r < 0) | |
1062 | return bus_send_error_reply(connection, message, &error, r); | |
1063 | ||
1064 | } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ActivateSession")) { | |
1065 | const char *name; | |
1066 | Session *session; | |
1067 | ||
1068 | if (!dbus_message_get_args( | |
1069 | message, | |
1070 | &error, | |
1071 | DBUS_TYPE_STRING, &name, | |
1072 | DBUS_TYPE_INVALID)) | |
1073 | return bus_send_error_reply(connection, message, &error, -EINVAL); | |
1074 | ||
1075 | session = hashmap_get(m->sessions, name); | |
1076 | if (!session) | |
1077 | return bus_send_error_reply(connection, message, &error, -ENOENT); | |
1078 | ||
1079 | r = session_activate(session); | |
1080 | if (r < 0) | |
1081 | return bus_send_error_reply(connection, message, NULL, r); | |
1082 | ||
1083 | reply = dbus_message_new_method_return(message); | |
1084 | if (!reply) | |
1085 | goto oom; | |
1086 | ||
1087 | } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ActivateSessionOnSeat")) { | |
1088 | const char *session_name, *seat_name; | |
1089 | Session *session; | |
1090 | Seat *seat; | |
1091 | ||
1092 | /* Same as ActivateSession() but refuses to work if | |
1093 | * the seat doesn't match */ | |
1094 | ||
1095 | if (!dbus_message_get_args( | |
1096 | message, | |
1097 | &error, | |
1098 | DBUS_TYPE_STRING, &session_name, | |
1099 | DBUS_TYPE_STRING, &seat_name, | |
1100 | DBUS_TYPE_INVALID)) | |
1101 | return bus_send_error_reply(connection, message, &error, -EINVAL); | |
1102 | ||
1103 | session = hashmap_get(m->sessions, session_name); | |
1104 | if (!session) | |
1105 | return bus_send_error_reply(connection, message, &error, -ENOENT); | |
1106 | ||
1107 | seat = hashmap_get(m->seats, seat_name); | |
1108 | if (!seat) | |
1109 | return bus_send_error_reply(connection, message, &error, -ENOENT); | |
1110 | ||
1111 | if (session->seat != seat) | |
1112 | return bus_send_error_reply(connection, message, &error, -EINVAL); | |
1113 | ||
1114 | r = session_activate(session); | |
1115 | if (r < 0) | |
1116 | return bus_send_error_reply(connection, message, NULL, r); | |
1117 | ||
1118 | reply = dbus_message_new_method_return(message); | |
1119 | if (!reply) | |
1120 | goto oom; | |
1121 | ||
1122 | } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "LockSession") || | |
1123 | dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "UnlockSession")) { | |
1124 | const char *name; | |
1125 | Session *session; | |
1126 | ||
1127 | if (!dbus_message_get_args( | |
1128 | message, | |
1129 | &error, | |
1130 | DBUS_TYPE_STRING, &name, | |
1131 | DBUS_TYPE_INVALID)) | |
1132 | return bus_send_error_reply(connection, message, &error, -EINVAL); | |
1133 | ||
1134 | session = hashmap_get(m->sessions, name); | |
1135 | if (!session) | |
1136 | return bus_send_error_reply(connection, message, &error, -ENOENT); | |
1137 | ||
1138 | if (session_send_lock(session, streq(dbus_message_get_member(message), "LockSession")) < 0) | |
1139 | goto oom; | |
1140 | ||
1141 | reply = dbus_message_new_method_return(message); | |
1142 | if (!reply) | |
1143 | goto oom; | |
1144 | ||
1145 | } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "KillSession")) { | |
1146 | const char *swho; | |
1147 | int32_t signo; | |
1148 | KillWho who; | |
1149 | const char *name; | |
1150 | Session *session; | |
1151 | ||
1152 | if (!dbus_message_get_args( | |
1153 | message, | |
1154 | &error, | |
1155 | DBUS_TYPE_STRING, &name, | |
1156 | DBUS_TYPE_STRING, &swho, | |
1157 | DBUS_TYPE_INT32, &signo, | |
1158 | DBUS_TYPE_INVALID)) | |
1159 | return bus_send_error_reply(connection, message, &error, -EINVAL); | |
1160 | ||
1161 | if (isempty(swho)) | |
1162 | who = KILL_ALL; | |
1163 | else { | |
1164 | who = kill_who_from_string(swho); | |
1165 | if (who < 0) | |
1166 | return bus_send_error_reply(connection, message, &error, -EINVAL); | |
1167 | } | |
1168 | ||
1169 | if (signo <= 0 || signo >= _NSIG) | |
1170 | return bus_send_error_reply(connection, message, &error, -EINVAL); | |
1171 | ||
1172 | session = hashmap_get(m->sessions, name); | |
1173 | if (!session) | |
1174 | return bus_send_error_reply(connection, message, &error, -ENOENT); | |
1175 | ||
1176 | r = session_kill(session, who, signo); | |
1177 | if (r < 0) | |
1178 | return bus_send_error_reply(connection, message, NULL, r); | |
1179 | ||
1180 | reply = dbus_message_new_method_return(message); | |
1181 | if (!reply) | |
1182 | goto oom; | |
1183 | ||
1184 | } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "KillUser")) { | |
1185 | uint32_t uid; | |
1186 | User *user; | |
1187 | int32_t signo; | |
1188 | ||
1189 | if (!dbus_message_get_args( | |
1190 | message, | |
1191 | &error, | |
1192 | DBUS_TYPE_UINT32, &uid, | |
1193 | DBUS_TYPE_INT32, &signo, | |
1194 | DBUS_TYPE_INVALID)) | |
1195 | return bus_send_error_reply(connection, message, &error, -EINVAL); | |
1196 | ||
1197 | if (signo <= 0 || signo >= _NSIG) | |
1198 | return bus_send_error_reply(connection, message, &error, -EINVAL); | |
1199 | ||
1200 | user = hashmap_get(m->users, ULONG_TO_PTR((unsigned long) uid)); | |
1201 | if (!user) | |
1202 | return bus_send_error_reply(connection, message, &error, -ENOENT); | |
1203 | ||
1204 | r = user_kill(user, signo); | |
1205 | if (r < 0) | |
1206 | return bus_send_error_reply(connection, message, NULL, r); | |
1207 | ||
1208 | reply = dbus_message_new_method_return(message); | |
1209 | if (!reply) | |
1210 | goto oom; | |
1211 | ||
1212 | } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "TerminateSession")) { | |
1213 | const char *name; | |
1214 | Session *session; | |
1215 | ||
1216 | if (!dbus_message_get_args( | |
1217 | message, | |
1218 | &error, | |
1219 | DBUS_TYPE_STRING, &name, | |
1220 | DBUS_TYPE_INVALID)) | |
1221 | return bus_send_error_reply(connection, message, &error, -EINVAL); | |
1222 | ||
1223 | session = hashmap_get(m->sessions, name); | |
1224 | if (!session) | |
1225 | return bus_send_error_reply(connection, message, &error, -ENOENT); | |
1226 | ||
1227 | r = session_stop(session); | |
1228 | if (r < 0) | |
1229 | return bus_send_error_reply(connection, message, NULL, r); | |
1230 | ||
1231 | reply = dbus_message_new_method_return(message); | |
1232 | if (!reply) | |
1233 | goto oom; | |
1234 | ||
1235 | } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "TerminateUser")) { | |
1236 | uint32_t uid; | |
1237 | User *user; | |
1238 | ||
1239 | if (!dbus_message_get_args( | |
1240 | message, | |
1241 | &error, | |
1242 | DBUS_TYPE_UINT32, &uid, | |
1243 | DBUS_TYPE_INVALID)) | |
1244 | return bus_send_error_reply(connection, message, &error, -EINVAL); | |
1245 | ||
1246 | user = hashmap_get(m->users, ULONG_TO_PTR((unsigned long) uid)); | |
1247 | if (!user) | |
1248 | return bus_send_error_reply(connection, message, &error, -ENOENT); | |
1249 | ||
1250 | r = user_stop(user); | |
1251 | if (r < 0) | |
1252 | return bus_send_error_reply(connection, message, NULL, r); | |
1253 | ||
1254 | reply = dbus_message_new_method_return(message); | |
1255 | if (!reply) | |
1256 | goto oom; | |
1257 | ||
1258 | } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "TerminateSeat")) { | |
1259 | const char *name; | |
1260 | Seat *seat; | |
1261 | ||
1262 | if (!dbus_message_get_args( | |
1263 | message, | |
1264 | &error, | |
1265 | DBUS_TYPE_STRING, &name, | |
1266 | DBUS_TYPE_INVALID)) | |
1267 | return bus_send_error_reply(connection, message, &error, -EINVAL); | |
1268 | ||
1269 | seat = hashmap_get(m->seats, name); | |
1270 | if (!seat) | |
1271 | return bus_send_error_reply(connection, message, &error, -ENOENT); | |
1272 | ||
1273 | r = seat_stop_sessions(seat); | |
1274 | if (r < 0) | |
1275 | return bus_send_error_reply(connection, message, NULL, r); | |
1276 | ||
1277 | reply = dbus_message_new_method_return(message); | |
1278 | if (!reply) | |
1279 | goto oom; | |
1280 | ||
1281 | } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "SetUserLinger")) { | |
1282 | uint32_t uid; | |
1283 | struct passwd *pw; | |
1284 | dbus_bool_t b, interactive; | |
1285 | char *path; | |
1286 | ||
1287 | if (!dbus_message_get_args( | |
1288 | message, | |
1289 | &error, | |
1290 | DBUS_TYPE_UINT32, &uid, | |
1291 | DBUS_TYPE_BOOLEAN, &b, | |
1292 | DBUS_TYPE_BOOLEAN, &interactive, | |
1293 | DBUS_TYPE_INVALID)) | |
1294 | return bus_send_error_reply(connection, message, &error, -EINVAL); | |
1295 | ||
1296 | errno = 0; | |
1297 | pw = getpwuid(uid); | |
1298 | if (!pw) | |
1299 | return bus_send_error_reply(connection, message, NULL, errno ? -errno : -EINVAL); | |
1300 | ||
1301 | r = verify_polkit(connection, message, "org.freedesktop.login1.set-user-linger", interactive, NULL, &error); | |
1302 | if (r < 0) | |
1303 | return bus_send_error_reply(connection, message, &error, r); | |
1304 | ||
1305 | mkdir_p("/var/lib/systemd", 0755); | |
1306 | ||
1307 | r = safe_mkdir("/var/lib/systemd/linger", 0755, 0, 0); | |
1308 | if (r < 0) | |
1309 | return bus_send_error_reply(connection, message, &error, r); | |
1310 | ||
1311 | path = strappend("/var/lib/systemd/linger/", pw->pw_name); | |
1312 | if (!path) | |
1313 | goto oom; | |
1314 | ||
1315 | if (b) { | |
1316 | User *u; | |
1317 | ||
1318 | r = touch(path); | |
1319 | free(path); | |
1320 | ||
1321 | if (r < 0) | |
1322 | return bus_send_error_reply(connection, message, &error, r); | |
1323 | ||
1324 | if (manager_add_user_by_uid(m, uid, &u) >= 0) | |
1325 | user_start(u); | |
1326 | ||
1327 | } else { | |
1328 | User *u; | |
1329 | ||
1330 | r = unlink(path); | |
1331 | free(path); | |
1332 | ||
1333 | if (r < 0 && errno != ENOENT) | |
1334 | return bus_send_error_reply(connection, message, &error, -errno); | |
1335 | ||
1336 | u = hashmap_get(m->users, ULONG_TO_PTR((unsigned long) uid)); | |
1337 | if (u) | |
1338 | user_add_to_gc_queue(u); | |
1339 | } | |
1340 | ||
1341 | reply = dbus_message_new_method_return(message); | |
1342 | if (!reply) | |
1343 | goto oom; | |
1344 | ||
1345 | } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "AttachDevice")) { | |
1346 | const char *sysfs, *seat; | |
1347 | dbus_bool_t interactive; | |
1348 | ||
1349 | if (!dbus_message_get_args( | |
1350 | message, | |
1351 | &error, | |
1352 | DBUS_TYPE_STRING, &seat, | |
1353 | DBUS_TYPE_STRING, &sysfs, | |
1354 | DBUS_TYPE_BOOLEAN, &interactive, | |
1355 | DBUS_TYPE_INVALID)) | |
1356 | return bus_send_error_reply(connection, message, &error, -EINVAL); | |
1357 | ||
1358 | if (!path_startswith(sysfs, "/sys") || !seat_name_is_valid(seat)) | |
1359 | return bus_send_error_reply(connection, message, NULL, -EINVAL); | |
1360 | ||
1361 | r = verify_polkit(connection, message, "org.freedesktop.login1.attach-device", interactive, NULL, &error); | |
1362 | if (r < 0) | |
1363 | return bus_send_error_reply(connection, message, &error, r); | |
1364 | ||
1365 | r = attach_device(m, seat, sysfs); | |
1366 | if (r < 0) | |
1367 | return bus_send_error_reply(connection, message, NULL, -EINVAL); | |
1368 | ||
1369 | reply = dbus_message_new_method_return(message); | |
1370 | if (!reply) | |
1371 | goto oom; | |
1372 | ||
1373 | ||
1374 | } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "FlushDevices")) { | |
1375 | dbus_bool_t interactive; | |
1376 | ||
1377 | if (!dbus_message_get_args( | |
1378 | message, | |
1379 | &error, | |
1380 | DBUS_TYPE_BOOLEAN, &interactive, | |
1381 | DBUS_TYPE_INVALID)) | |
1382 | return bus_send_error_reply(connection, message, &error, -EINVAL); | |
1383 | ||
1384 | r = verify_polkit(connection, message, "org.freedesktop.login1.flush-devices", interactive, NULL, &error); | |
1385 | if (r < 0) | |
1386 | return bus_send_error_reply(connection, message, &error, r); | |
1387 | ||
1388 | r = flush_devices(m); | |
1389 | if (r < 0) | |
1390 | return bus_send_error_reply(connection, message, NULL, -EINVAL); | |
1391 | ||
1392 | reply = dbus_message_new_method_return(message); | |
1393 | if (!reply) | |
1394 | goto oom; | |
1395 | ||
1396 | } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "PowerOff") || | |
1397 | dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "Reboot")) { | |
1398 | dbus_bool_t interactive; | |
1399 | bool multiple_sessions; | |
1400 | DBusMessage *forward, *freply; | |
1401 | const char *name; | |
1402 | const char *mode = "replace"; | |
1403 | const char *action; | |
1404 | ||
1405 | if (!dbus_message_get_args( | |
1406 | message, | |
1407 | &error, | |
1408 | DBUS_TYPE_BOOLEAN, &interactive, | |
1409 | DBUS_TYPE_INVALID)) | |
1410 | return bus_send_error_reply(connection, message, &error, -EINVAL); | |
1411 | ||
1412 | r = have_multiple_sessions(connection, m, message, &error); | |
1413 | if (r < 0) | |
1414 | return bus_send_error_reply(connection, message, &error, r); | |
1415 | ||
1416 | multiple_sessions = r > 0; | |
1417 | ||
1418 | if (streq(dbus_message_get_member(message), "PowerOff")) { | |
1419 | if (multiple_sessions) | |
1420 | action = "org.freedesktop.login1.power-off-multiple-sessions"; | |
1421 | else | |
1422 | action = "org.freedesktop.login1.power-off"; | |
1423 | ||
1424 | name = SPECIAL_POWEROFF_TARGET; | |
1425 | } else { | |
1426 | if (multiple_sessions) | |
1427 | action = "org.freedesktop.login1.reboot-multiple-sessions"; | |
1428 | else | |
1429 | action = "org.freedesktop.login1.reboot"; | |
1430 | ||
1431 | name = SPECIAL_REBOOT_TARGET; | |
1432 | } | |
1433 | ||
1434 | r = verify_polkit(connection, message, action, interactive, NULL, &error); | |
1435 | if (r < 0) | |
1436 | return bus_send_error_reply(connection, message, &error, r); | |
1437 | ||
1438 | forward = dbus_message_new_method_call( | |
1439 | "org.freedesktop.systemd1", | |
1440 | "/org/freedesktop/systemd1", | |
1441 | "org.freedesktop.systemd1.Manager", | |
1442 | "StartUnit"); | |
1443 | if (!forward) | |
1444 | return bus_send_error_reply(connection, message, NULL, -ENOMEM); | |
1445 | ||
1446 | if (!dbus_message_append_args(forward, | |
1447 | DBUS_TYPE_STRING, &name, | |
1448 | DBUS_TYPE_STRING, &mode, | |
1449 | DBUS_TYPE_INVALID)) { | |
1450 | dbus_message_unref(forward); | |
1451 | return bus_send_error_reply(connection, message, NULL, -ENOMEM); | |
1452 | } | |
1453 | ||
1454 | freply = dbus_connection_send_with_reply_and_block(connection, forward, -1, &error); | |
1455 | dbus_message_unref(forward); | |
1456 | ||
1457 | if (!freply) | |
1458 | return bus_send_error_reply(connection, message, &error, -EIO); | |
1459 | ||
1460 | dbus_message_unref(freply); | |
1461 | ||
1462 | reply = dbus_message_new_method_return(message); | |
1463 | if (!reply) | |
1464 | goto oom; | |
1465 | ||
1466 | } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "CanPowerOff") || | |
1467 | dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "CanReboot")) { | |
1468 | ||
1469 | bool multiple_sessions, challenge, b; | |
1470 | const char *t, *action; | |
1471 | ||
1472 | r = have_multiple_sessions(connection, m, message, &error); | |
1473 | if (r < 0) | |
1474 | return bus_send_error_reply(connection, message, &error, r); | |
1475 | ||
1476 | multiple_sessions = r > 0; | |
1477 | ||
1478 | if (streq(dbus_message_get_member(message), "CanPowerOff")) { | |
1479 | if (multiple_sessions) | |
1480 | action = "org.freedesktop.login1.power-off-multiple-sessions"; | |
1481 | else | |
1482 | action = "org.freedesktop.login1.power-off"; | |
1483 | ||
1484 | } else { | |
1485 | if (multiple_sessions) | |
1486 | action = "org.freedesktop.login1.reboot-multiple-sessions"; | |
1487 | else | |
1488 | action = "org.freedesktop.login1.reboot"; | |
1489 | } | |
1490 | ||
1491 | r = verify_polkit(connection, message, action, false, &challenge, &error); | |
1492 | if (r < 0) | |
1493 | return bus_send_error_reply(connection, message, &error, r); | |
1494 | ||
1495 | reply = dbus_message_new_method_return(message); | |
1496 | if (!reply) | |
1497 | goto oom; | |
1498 | ||
1499 | t = r > 0 ? "yes" : | |
1500 | challenge ? "challenge" : | |
1501 | "no"; | |
1502 | ||
1503 | b = dbus_message_append_args( | |
1504 | reply, | |
1505 | DBUS_TYPE_STRING, &t, | |
1506 | DBUS_TYPE_INVALID); | |
1507 | if (!b) | |
1508 | goto oom; | |
1509 | ||
1510 | } else if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) { | |
1511 | char *introspection = NULL; | |
1512 | FILE *f; | |
1513 | Iterator i; | |
1514 | Session *session; | |
1515 | Seat *seat; | |
1516 | User *user; | |
1517 | size_t size; | |
1518 | char *p; | |
1519 | ||
1520 | if (!(reply = dbus_message_new_method_return(message))) | |
1521 | goto oom; | |
1522 | ||
1523 | /* We roll our own introspection code here, instead of | |
1524 | * relying on bus_default_message_handler() because we | |
1525 | * need to generate our introspection string | |
1526 | * dynamically. */ | |
1527 | ||
1528 | if (!(f = open_memstream(&introspection, &size))) | |
1529 | goto oom; | |
1530 | ||
1531 | fputs(INTROSPECTION_BEGIN, f); | |
1532 | ||
1533 | HASHMAP_FOREACH(seat, m->seats, i) { | |
1534 | p = bus_path_escape(seat->id); | |
1535 | ||
1536 | if (p) { | |
1537 | fprintf(f, "<node name=\"seat/%s\"/>", p); | |
1538 | free(p); | |
1539 | } | |
1540 | } | |
1541 | ||
1542 | HASHMAP_FOREACH(user, m->users, i) | |
1543 | fprintf(f, "<node name=\"user/%llu\"/>", (unsigned long long) user->uid); | |
1544 | ||
1545 | HASHMAP_FOREACH(session, m->sessions, i) { | |
1546 | p = bus_path_escape(session->id); | |
1547 | ||
1548 | if (p) { | |
1549 | fprintf(f, "<node name=\"session/%s\"/>", p); | |
1550 | free(p); | |
1551 | } | |
1552 | } | |
1553 | ||
1554 | fputs(INTROSPECTION_END, f); | |
1555 | ||
1556 | if (ferror(f)) { | |
1557 | fclose(f); | |
1558 | free(introspection); | |
1559 | goto oom; | |
1560 | } | |
1561 | ||
1562 | fclose(f); | |
1563 | ||
1564 | if (!introspection) | |
1565 | goto oom; | |
1566 | ||
1567 | if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &introspection, DBUS_TYPE_INVALID)) { | |
1568 | free(introspection); | |
1569 | goto oom; | |
1570 | } | |
1571 | ||
1572 | free(introspection); | |
1573 | } else { | |
1574 | const BusBoundProperties bps[] = { | |
1575 | { "org.freedesktop.login1.Manager", bus_login_manager_properties, m }, | |
1576 | { NULL, } | |
1577 | }; | |
1578 | return bus_default_message_handler(connection, message, NULL, INTERFACES_LIST, bps); | |
1579 | } | |
1580 | ||
1581 | if (reply) { | |
1582 | if (!dbus_connection_send(connection, reply, NULL)) | |
1583 | goto oom; | |
1584 | ||
1585 | dbus_message_unref(reply); | |
1586 | } | |
1587 | ||
1588 | return DBUS_HANDLER_RESULT_HANDLED; | |
1589 | ||
1590 | oom: | |
1591 | if (reply) | |
1592 | dbus_message_unref(reply); | |
1593 | ||
1594 | dbus_error_free(&error); | |
1595 | ||
1596 | return DBUS_HANDLER_RESULT_NEED_MEMORY; | |
1597 | } | |
1598 | ||
1599 | const DBusObjectPathVTable bus_manager_vtable = { | |
1600 | .message_function = manager_message_handler | |
1601 | }; | |
1602 | ||
1603 | DBusHandlerResult bus_message_filter( | |
1604 | DBusConnection *connection, | |
1605 | DBusMessage *message, | |
1606 | void *userdata) { | |
1607 | ||
1608 | Manager *m = userdata; | |
1609 | DBusError error; | |
1610 | ||
1611 | assert(m); | |
1612 | assert(connection); | |
1613 | assert(message); | |
1614 | ||
1615 | dbus_error_init(&error); | |
1616 | ||
1617 | if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Agent", "Released")) { | |
1618 | const char *cgroup; | |
1619 | ||
1620 | if (!dbus_message_get_args(message, &error, | |
1621 | DBUS_TYPE_STRING, &cgroup, | |
1622 | DBUS_TYPE_INVALID)) | |
1623 | log_error("Failed to parse Released message: %s", bus_error_message(&error)); | |
1624 | else | |
1625 | manager_cgroup_notify_empty(m, cgroup); | |
1626 | } | |
1627 | ||
1628 | dbus_error_free(&error); | |
1629 | ||
1630 | return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; | |
1631 | } | |
1632 | ||
1633 | int manager_send_changed(Manager *manager, const char *properties) { | |
1634 | DBusMessage *m; | |
1635 | int r = -ENOMEM; | |
1636 | ||
1637 | assert(manager); | |
1638 | ||
1639 | m = bus_properties_changed_new("/org/freedesktop/login1", "org.freedesktop.login1.Manager", properties); | |
1640 | if (!m) | |
1641 | goto finish; | |
1642 | ||
1643 | if (!dbus_connection_send(manager->bus, m, NULL)) | |
1644 | goto finish; | |
1645 | ||
1646 | r = 0; | |
1647 | ||
1648 | finish: | |
1649 | if (m) | |
1650 | dbus_message_unref(m); | |
1651 | ||
1652 | return r; | |
1653 | } |