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3f49d45a LP |
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 | ||
a185c5aa LP |
22 | #include <errno.h> |
23 | #include <string.h> | |
98a28fef | 24 | #include <unistd.h> |
7f7bb946 | 25 | #include <pwd.h> |
a185c5aa | 26 | |
3f49d45a LP |
27 | #include "logind.h" |
28 | #include "dbus-common.h" | |
98a28fef | 29 | #include "strv.h" |
7f7bb946 | 30 | #include "polkit.h" |
3f49d45a LP |
31 | |
32 | #define BUS_MANAGER_INTERFACE \ | |
33 | " <interface name=\"org.freedesktop.login1.Manager\">\n" \ | |
bef422ae | 34 | " <method name=\"GetSession\">\n" \ |
3f49d45a | 35 | " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \ |
bef422ae | 36 | " <arg name=\"session\" type=\"o\" direction=\"out\"/>\n" \ |
3f49d45a LP |
37 | " </method>\n" \ |
38 | " <method name=\"GetUser\">\n" \ | |
bef422ae | 39 | " <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n" \ |
3f49d45a LP |
40 | " <arg name=\"user\" type=\"o\" direction=\"out\"/>\n" \ |
41 | " </method>\n" \ | |
bef422ae | 42 | " <method name=\"GetSeat\">\n" \ |
3f49d45a | 43 | " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \ |
bef422ae | 44 | " <arg name=\"seat\" type=\"o\" direction=\"out\"/>\n" \ |
3f49d45a | 45 | " </method>\n" \ |
bef422ae | 46 | " <method name=\"ListSessions\">\n" \ |
e1c9c2d5 | 47 | " <arg name=\"sessions\" type=\"a(susso)\" direction=\"out\"/>\n" \ |
3f49d45a LP |
48 | " </method>\n" \ |
49 | " <method name=\"ListUsers\">\n" \ | |
50 | " <arg name=\"users\" type=\"a(uso)\" direction=\"out\"/>\n" \ | |
51 | " </method>\n" \ | |
bef422ae LP |
52 | " <method name=\"ListSeats\">\n" \ |
53 | " <arg name=\"seats\" type=\"a(so)\" direction=\"out\"/>\n" \ | |
3f49d45a LP |
54 | " </method>\n" \ |
55 | " <method name=\"CreateSession\">\n" \ | |
56 | " <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n" \ | |
57 | " <arg name=\"leader\" type=\"u\" direction=\"in\"/>\n" \ | |
4d6d6518 | 58 | " <arg name=\"sevice\" type=\"s\" direction=\"in\"/>\n" \ |
3f49d45a LP |
59 | " <arg name=\"type\" type=\"s\" direction=\"in\"/>\n" \ |
60 | " <arg name=\"seat\" type=\"s\" direction=\"in\"/>\n" \ | |
4d6d6518 | 61 | " <arg name=\"vtnr\" type=\"u\" direction=\"in\"/>\n" \ |
3f49d45a LP |
62 | " <arg name=\"tty\" type=\"s\" direction=\"in\"/>\n" \ |
63 | " <arg name=\"display\" type=\"s\" direction=\"in\"/>\n" \ | |
64 | " <arg name=\"remote\" type=\"b\" direction=\"in\"/>\n" \ | |
65 | " <arg name=\"remote_user\" type=\"s\" direction=\"in\"/>\n" \ | |
66 | " <arg name=\"remote_host\" type=\"s\" direction=\"in\"/>\n" \ | |
67 | " <arg name=\"controllers\" type=\"as\" direction=\"in\"/>\n" \ | |
68 | " <arg name=\"reset_controllers\" type=\"as\" direction=\"in\"/>\n" \ | |
98a28fef | 69 | " <arg name=\"kill_processes\" type=\"b\" direction=\"in\"/>\n" \ |
3f49d45a LP |
70 | " <arg name=\"id\" type=\"s\" direction=\"out\"/>\n" \ |
71 | " <arg name=\"path\" type=\"o\" direction=\"out\"/>\n" \ | |
98a28fef | 72 | " <arg name=\"runtime_path\" type=\"o\" direction=\"out\"/>\n" \ |
3f49d45a LP |
73 | " <arg name=\"fd\" type=\"h\" direction=\"out\"/>\n" \ |
74 | " </method>\n" \ | |
a185c5aa LP |
75 | " <method name=\"ActivateSession\">\n" \ |
76 | " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \ | |
77 | " </method>\n" \ | |
3f49d45a LP |
78 | " <method name=\"TerminateSession\">\n" \ |
79 | " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \ | |
80 | " </method>\n" \ | |
81 | " <method name=\"TerminateUser\">\n" \ | |
bef422ae | 82 | " <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n" \ |
3f49d45a LP |
83 | " </method>\n" \ |
84 | " <method name=\"TerminateSeat\">\n" \ | |
85 | " <arg name=\"id\" type=\"s\" direction=\"in\"/>\n" \ | |
86 | " </method>\n" \ | |
7f7bb946 LP |
87 | " <method name=\"SetUserLinger\">\n" \ |
88 | " <arg name=\"uid\" type=\"u\" direction=\"in\"/>\n" \ | |
89 | " <arg name=\"b\" type=\"b\" direction=\"in\"/>\n" \ | |
90 | " <arg name=\"interactive\" type=\"b\" direction=\"in\"/>\n" \ | |
91 | " </method>\n" \ | |
3f49d45a LP |
92 | " <signal name=\"SessionNew\">\n" \ |
93 | " <arg name=\"id\" type=\"s\"/>\n" \ | |
94 | " <arg name=\"path\" type=\"o\"/>\n" \ | |
95 | " </signal>\n" \ | |
96 | " <signal name=\"SessionRemoved\">\n" \ | |
97 | " <arg name=\"id\" type=\"s\"/>\n" \ | |
98 | " <arg name=\"path\" type=\"o\"/>\n" \ | |
99 | " </signal>\n" \ | |
100 | " <signal name=\"UserNew\">\n" \ | |
101 | " <arg name=\"uid\" type=\"u\"/>\n" \ | |
102 | " <arg name=\"path\" type=\"o\"/>\n" \ | |
103 | " </signal>\n" \ | |
104 | " <signal name=\"UserRemoved\">\n" \ | |
105 | " <arg name=\"uid\" type=\"u\"/>\n" \ | |
106 | " <arg name=\"path\" type=\"o\"/>\n" \ | |
107 | " </signal>\n" \ | |
108 | " <signal name=\"SeatNew\">\n" \ | |
109 | " <arg name=\"id\" type=\"s\"/>\n" \ | |
110 | " <arg name=\"path\" type=\"o\"/>\n" \ | |
111 | " </signal>\n" \ | |
112 | " <signal name=\"SeatRemoved\">\n" \ | |
113 | " <arg name=\"id\" type=\"s\"/>\n" \ | |
114 | " <arg name=\"path\" type=\"o\"/>\n" \ | |
115 | " </signal>\n" \ | |
116 | " <property name=\"ControlGroupHierarchy\" type=\"s\" access=\"read\"/>\n" \ | |
117 | " <property name=\"Controllers\" type=\"as\" access=\"read\"/>\n" \ | |
118 | " <property name=\"ResetControllers\" type=\"as\" access=\"read\"/>\n" \ | |
119 | " <property name=\"NAutoVTs\" type=\"u\" access=\"read\"/>\n" \ | |
120 | " <property name=\"KillOnlyUsers\" type=\"as\" access=\"read\"/>\n" \ | |
121 | " <property name=\"KillExcludeUsers\" type=\"as\" access=\"read\"/>\n" \ | |
122 | " <property name=\"KillUserProcesses\" type=\"b\" access=\"read\"/>\n" \ | |
a185c5aa LP |
123 | " <property name=\"IdleHint\" type=\"b\" access=\"read\"/>\n" \ |
124 | " <property name=\"IdleSinceHint\" type=\"t\" access=\"read\"/>\n" \ | |
125 | " <property name=\"IdleSinceHintMonotonic\" type=\"t\" access=\"read\"/>\n" \ | |
3f49d45a LP |
126 | " </interface>\n" |
127 | ||
128 | #define INTROSPECTION_BEGIN \ | |
129 | DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \ | |
130 | "<node>\n" \ | |
131 | BUS_MANAGER_INTERFACE \ | |
132 | BUS_PROPERTIES_INTERFACE \ | |
133 | BUS_PEER_INTERFACE \ | |
134 | BUS_INTROSPECTABLE_INTERFACE | |
135 | ||
136 | #define INTROSPECTION_END \ | |
137 | "</node>\n" | |
138 | ||
139 | #define INTERFACES_LIST \ | |
140 | BUS_GENERIC_INTERFACES_LIST \ | |
141 | "org.freedesktop.login1.Manager\0" | |
142 | ||
a185c5aa LP |
143 | static int bus_manager_append_idle_hint(DBusMessageIter *i, const char *property, void *data) { |
144 | Manager *m = data; | |
77527da0 | 145 | dbus_bool_t b; |
a185c5aa LP |
146 | |
147 | assert(i); | |
148 | assert(property); | |
149 | assert(m); | |
150 | ||
77527da0 | 151 | b = manager_get_idle_hint(m, NULL) > 0; |
a185c5aa LP |
152 | if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b)) |
153 | return -ENOMEM; | |
154 | ||
155 | return 0; | |
156 | } | |
157 | ||
158 | static int bus_manager_append_idle_hint_since(DBusMessageIter *i, const char *property, void *data) { | |
159 | Manager *m = data; | |
160 | dual_timestamp t; | |
161 | uint64_t u; | |
162 | ||
163 | assert(i); | |
164 | assert(property); | |
165 | assert(m); | |
166 | ||
167 | manager_get_idle_hint(m, &t); | |
168 | u = streq(property, "IdleSinceHint") ? t.realtime : t.monotonic; | |
169 | ||
170 | if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT64, &u)) | |
171 | return -ENOMEM; | |
172 | ||
173 | return 0; | |
174 | } | |
175 | ||
98a28fef LP |
176 | static int bus_manager_create_session(Manager *m, DBusMessage *message, DBusMessage **_reply) { |
177 | Session *session = NULL; | |
178 | User *user = NULL; | |
179 | const char *type, *seat, *tty, *display, *remote_user, *remote_host, *service; | |
180 | uint32_t uid, leader, audit_id = 0; | |
181 | dbus_bool_t remote, kill_processes; | |
182 | char **controllers = NULL, **reset_controllers = NULL; | |
183 | SessionType t; | |
184 | Seat *s; | |
185 | DBusMessageIter iter; | |
186 | int r; | |
07714753 | 187 | char *id = NULL, *p; |
4d6d6518 | 188 | uint32_t vtnr = 0; |
98a28fef LP |
189 | int pipe_fds[2] = { -1, -1 }; |
190 | DBusMessage *reply = NULL; | |
191 | bool b; | |
192 | ||
193 | assert(m); | |
194 | assert(message); | |
195 | assert(_reply); | |
196 | ||
197 | if (!dbus_message_iter_init(message, &iter) || | |
198 | dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_UINT32) | |
199 | return -EINVAL; | |
200 | ||
201 | dbus_message_iter_get_basic(&iter, &uid); | |
202 | ||
203 | if (!dbus_message_iter_next(&iter) || | |
204 | dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_UINT32) | |
205 | return -EINVAL; | |
206 | ||
207 | dbus_message_iter_get_basic(&iter, &leader); | |
208 | ||
209 | if (leader <= 0 || | |
210 | !dbus_message_iter_next(&iter) || | |
211 | dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING) | |
212 | return -EINVAL; | |
213 | ||
214 | dbus_message_iter_get_basic(&iter, &service); | |
215 | ||
216 | if (!dbus_message_iter_next(&iter) || | |
217 | dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING) | |
218 | return -EINVAL; | |
219 | ||
220 | dbus_message_iter_get_basic(&iter, &type); | |
221 | t = session_type_from_string(type); | |
222 | ||
223 | if (t < 0 || | |
224 | !dbus_message_iter_next(&iter) || | |
225 | dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING) | |
226 | return -EINVAL; | |
227 | ||
228 | dbus_message_iter_get_basic(&iter, &seat); | |
229 | ||
230 | if (isempty(seat)) | |
231 | s = NULL; | |
232 | else { | |
233 | s = hashmap_get(m->seats, seat); | |
234 | if (!s) | |
235 | return -ENOENT; | |
236 | } | |
237 | ||
4d6d6518 LP |
238 | if (!dbus_message_iter_next(&iter) || |
239 | dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_UINT32) | |
240 | return -EINVAL; | |
241 | ||
242 | dbus_message_iter_get_basic(&iter, &vtnr); | |
243 | ||
98a28fef LP |
244 | if (!dbus_message_iter_next(&iter) || |
245 | dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING) | |
246 | return -EINVAL; | |
247 | ||
248 | dbus_message_iter_get_basic(&iter, &tty); | |
249 | ||
250 | if (tty_is_vc(tty)) { | |
4d6d6518 | 251 | int v; |
98a28fef LP |
252 | |
253 | if (!s) | |
254 | s = m->vtconsole; | |
255 | else if (s != m->vtconsole) | |
256 | return -EINVAL; | |
257 | ||
4d6d6518 LP |
258 | v = vtnr_from_tty(tty); |
259 | ||
260 | if (v <= 0) | |
261 | return v < 0 ? v : -EINVAL; | |
98a28fef LP |
262 | |
263 | if (vtnr <= 0) | |
4d6d6518 LP |
264 | vtnr = (uint32_t) v; |
265 | else if (vtnr != (uint32_t) v) | |
266 | return -EINVAL; | |
98a28fef | 267 | |
bf100920 | 268 | } else if (!isempty(tty) && s && seat_is_vtconsole(s)) |
98a28fef LP |
269 | return -EINVAL; |
270 | ||
4d6d6518 LP |
271 | if (s) { |
272 | if (seat_is_vtconsole(s)) { | |
273 | if (vtnr <= 0 || vtnr > 63) | |
274 | return -EINVAL; | |
275 | } else { | |
276 | if (vtnr > 0) | |
277 | return -EINVAL; | |
278 | } | |
279 | } | |
280 | ||
98a28fef LP |
281 | if (!dbus_message_iter_next(&iter) || |
282 | dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING) | |
283 | return -EINVAL; | |
284 | ||
285 | dbus_message_iter_get_basic(&iter, &display); | |
286 | ||
287 | if (!dbus_message_iter_next(&iter) || | |
288 | dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_BOOLEAN) | |
289 | return -EINVAL; | |
290 | ||
291 | dbus_message_iter_get_basic(&iter, &remote); | |
292 | ||
293 | if (!dbus_message_iter_next(&iter) || | |
294 | dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING) | |
295 | return -EINVAL; | |
296 | ||
297 | dbus_message_iter_get_basic(&iter, &remote_user); | |
298 | ||
299 | if (!dbus_message_iter_next(&iter) || | |
300 | dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_STRING) | |
301 | return -EINVAL; | |
302 | ||
303 | dbus_message_iter_get_basic(&iter, &remote_host); | |
304 | ||
305 | if (!dbus_message_iter_next(&iter) || | |
306 | dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY || | |
307 | dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRING) | |
308 | return -EINVAL; | |
309 | ||
310 | r = bus_parse_strv_iter(&iter, &controllers); | |
311 | if (r < 0) | |
312 | return -EINVAL; | |
313 | ||
314 | if (!dbus_message_iter_next(&iter) || | |
315 | dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY || | |
316 | dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRING) { | |
317 | r = -EINVAL; | |
318 | goto fail; | |
319 | } | |
320 | ||
321 | r = bus_parse_strv_iter(&iter, &reset_controllers); | |
322 | if (r < 0) | |
323 | goto fail; | |
324 | ||
325 | if (!dbus_message_iter_next(&iter) || | |
326 | dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_BOOLEAN) { | |
327 | r = -EINVAL; | |
328 | goto fail; | |
329 | } | |
330 | ||
331 | dbus_message_iter_get_basic(&iter, &kill_processes); | |
332 | ||
333 | r = manager_add_user_by_uid(m, uid, &user); | |
334 | if (r < 0) | |
335 | goto fail; | |
336 | ||
337 | audit_session_from_pid(leader, &audit_id); | |
338 | ||
07714753 | 339 | if (audit_id > 0) { |
98a28fef | 340 | asprintf(&id, "%lu", (unsigned long) audit_id); |
98a28fef | 341 | |
07714753 LP |
342 | if (!id) { |
343 | r = -ENOMEM; | |
344 | goto fail; | |
345 | } | |
98a28fef | 346 | |
21c390cc LP |
347 | session = hashmap_get(m->sessions, id); |
348 | ||
349 | if (session) { | |
350 | ||
351 | /* Session already exists, client is probably | |
352 | * something like "su" which changes uid but | |
353 | * is still the same audit session */ | |
354 | ||
355 | reply = dbus_message_new_method_return(message); | |
356 | if (!reply) { | |
357 | r = -ENOMEM; | |
358 | goto fail; | |
359 | } | |
360 | ||
361 | /* Create a throw-away fd */ | |
362 | if (pipe(pipe_fds) < 0) { | |
363 | r = -errno; | |
364 | goto fail; | |
365 | } | |
366 | ||
367 | close_nointr_nofail(pipe_fds[0]); | |
368 | pipe_fds[0] = -1; | |
369 | ||
370 | p = session_bus_path(session); | |
371 | if (!p) { | |
372 | r = -ENOMEM; | |
373 | goto fail; | |
374 | } | |
375 | ||
376 | b = dbus_message_append_args( | |
377 | reply, | |
378 | DBUS_TYPE_STRING, &session->id, | |
379 | DBUS_TYPE_OBJECT_PATH, &p, | |
380 | DBUS_TYPE_STRING, &session->user->runtime_path, | |
381 | DBUS_TYPE_UNIX_FD, &pipe_fds[1], | |
382 | DBUS_TYPE_INVALID); | |
383 | free(p); | |
384 | ||
385 | if (!b) { | |
386 | r = -ENOMEM; | |
387 | goto fail; | |
388 | } | |
389 | ||
390 | close_nointr_nofail(pipe_fds[1]); | |
391 | *_reply = reply; | |
392 | ||
393 | return 0; | |
07714753 LP |
394 | } |
395 | ||
396 | } else { | |
397 | do { | |
398 | free(id); | |
399 | asprintf(&id, "c%lu", ++m->session_counter); | |
400 | ||
401 | if (!id) { | |
402 | r = -ENOMEM; | |
403 | goto fail; | |
404 | } | |
405 | ||
406 | } while (hashmap_get(m->sessions, id)); | |
98a28fef LP |
407 | } |
408 | ||
409 | r = manager_add_session(m, user, id, &session); | |
410 | free(id); | |
411 | if (r < 0) | |
412 | goto fail; | |
413 | ||
414 | session->leader = leader; | |
415 | session->audit_id = audit_id; | |
416 | session->type = t; | |
417 | session->remote = remote; | |
418 | session->controllers = controllers; | |
419 | session->reset_controllers = reset_controllers; | |
420 | session->kill_processes = kill_processes; | |
421 | session->vtnr = vtnr; | |
422 | ||
423 | controllers = reset_controllers = NULL; | |
424 | ||
425 | if (!isempty(tty)) { | |
426 | session->tty = strdup(tty); | |
427 | if (!session->tty) { | |
428 | r = -ENOMEM; | |
429 | goto fail; | |
430 | } | |
431 | } | |
432 | ||
433 | if (!isempty(display)) { | |
434 | session->display = strdup(display); | |
435 | if (!session->display) { | |
436 | r = -ENOMEM; | |
437 | goto fail; | |
438 | } | |
439 | } | |
440 | ||
441 | if (!isempty(remote_user)) { | |
442 | session->remote_user = strdup(remote_user); | |
443 | if (!session->remote_user) { | |
444 | r = -ENOMEM; | |
445 | goto fail; | |
446 | } | |
447 | } | |
448 | ||
449 | if (!isempty(remote_host)) { | |
450 | session->remote_host = strdup(remote_host); | |
451 | if (!session->remote_host) { | |
452 | r = -ENOMEM; | |
453 | goto fail; | |
454 | } | |
455 | } | |
456 | ||
457 | if (!isempty(service)) { | |
458 | session->service = strdup(service); | |
459 | if (!session->service) { | |
460 | r = -ENOMEM; | |
461 | goto fail; | |
462 | } | |
463 | } | |
464 | ||
465 | if (pipe(pipe_fds) < 0) { | |
466 | r = -errno; | |
467 | goto fail; | |
468 | } | |
469 | ||
31b79c2b LP |
470 | r = session_set_pipe_fd(session, pipe_fds[0]); |
471 | if (r < 0) | |
472 | goto fail; | |
19bc719e | 473 | pipe_fds[0] = -1; |
98a28fef LP |
474 | |
475 | if (s) { | |
476 | r = seat_attach_session(s, session); | |
477 | if (r < 0) | |
478 | goto fail; | |
479 | } | |
480 | ||
481 | r = session_start(session); | |
482 | if (r < 0) | |
483 | goto fail; | |
484 | ||
485 | reply = dbus_message_new_method_return(message); | |
486 | if (!reply) { | |
487 | r = -ENOMEM; | |
488 | goto fail; | |
489 | } | |
490 | ||
491 | p = session_bus_path(session); | |
492 | if (!p) { | |
493 | r = -ENOMEM; | |
494 | goto fail; | |
495 | } | |
496 | ||
497 | b = dbus_message_append_args( | |
498 | reply, | |
499 | DBUS_TYPE_STRING, &session->id, | |
500 | DBUS_TYPE_OBJECT_PATH, &p, | |
501 | DBUS_TYPE_STRING, &session->user->runtime_path, | |
19bc719e | 502 | DBUS_TYPE_UNIX_FD, &pipe_fds[1], |
98a28fef LP |
503 | DBUS_TYPE_INVALID); |
504 | free(p); | |
505 | ||
506 | if (!b) { | |
507 | r = -ENOMEM; | |
508 | goto fail; | |
509 | } | |
510 | ||
19bc719e | 511 | close_nointr_nofail(pipe_fds[1]); |
98a28fef LP |
512 | *_reply = reply; |
513 | ||
514 | return 0; | |
515 | ||
516 | fail: | |
517 | strv_free(controllers); | |
518 | strv_free(reset_controllers); | |
519 | ||
520 | if (session) | |
521 | session_add_to_gc_queue(session); | |
522 | ||
523 | if (user) | |
524 | user_add_to_gc_queue(user); | |
525 | ||
526 | close_pipe(pipe_fds); | |
527 | ||
528 | if (reply) | |
529 | dbus_message_unref(reply); | |
530 | ||
531 | return r; | |
532 | } | |
533 | ||
3f49d45a LP |
534 | static DBusHandlerResult manager_message_handler( |
535 | DBusConnection *connection, | |
536 | DBusMessage *message, | |
537 | void *userdata) { | |
538 | ||
539 | Manager *m = userdata; | |
540 | ||
541 | const BusProperty properties[] = { | |
a185c5aa LP |
542 | { "org.freedesktop.login1.Manager", "ControlGroupHierarchy", bus_property_append_string, "s", m->cgroup_path }, |
543 | { "org.freedesktop.login1.Manager", "Controllers", bus_property_append_strv, "as", m->controllers }, | |
a185c5aa LP |
544 | { "org.freedesktop.login1.Manager", "NAutoVTs", bus_property_append_unsigned, "u", &m->n_autovts }, |
545 | { "org.freedesktop.login1.Manager", "KillOnlyUsers", bus_property_append_strv, "as", m->kill_only_users }, | |
546 | { "org.freedesktop.login1.Manager", "KillExcludeUsers", bus_property_append_strv, "as", m->kill_exclude_users }, | |
547 | { "org.freedesktop.login1.Manager", "KillUserProcesses", bus_property_append_bool, "b", &m->kill_user_processes }, | |
548 | { "org.freedesktop.login1.Manager", "IdleHint", bus_manager_append_idle_hint, "b", m }, | |
549 | { "org.freedesktop.login1.Manager", "IdleSinceHint", bus_manager_append_idle_hint_since, "t", m }, | |
550 | { "org.freedesktop.login1.Manager", "IdleSinceHintMonotonic", bus_manager_append_idle_hint_since, "t", m }, | |
3f49d45a LP |
551 | { NULL, NULL, NULL, NULL, NULL } |
552 | }; | |
553 | ||
554 | DBusError error; | |
555 | DBusMessage *reply = NULL; | |
bef422ae | 556 | int r; |
3f49d45a LP |
557 | |
558 | assert(connection); | |
559 | assert(message); | |
560 | assert(m); | |
561 | ||
562 | dbus_error_init(&error); | |
563 | ||
bef422ae LP |
564 | if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetSession")) { |
565 | const char *name; | |
566 | char *p; | |
567 | Session *session; | |
568 | bool b; | |
569 | ||
570 | if (!dbus_message_get_args( | |
571 | message, | |
572 | &error, | |
573 | DBUS_TYPE_STRING, &name, | |
574 | DBUS_TYPE_INVALID)) | |
575 | return bus_send_error_reply(connection, message, &error, -EINVAL); | |
576 | ||
577 | session = hashmap_get(m->sessions, name); | |
578 | if (!session) | |
579 | return bus_send_error_reply(connection, message, &error, -ENOENT); | |
580 | ||
581 | reply = dbus_message_new_method_return(message); | |
582 | if (!reply) | |
583 | goto oom; | |
584 | ||
585 | p = session_bus_path(session); | |
586 | if (!p) | |
587 | goto oom; | |
588 | ||
589 | b = dbus_message_append_args( | |
590 | reply, | |
591 | DBUS_TYPE_OBJECT_PATH, &p, | |
592 | DBUS_TYPE_INVALID); | |
593 | free(p); | |
594 | ||
595 | if (!b) | |
596 | goto oom; | |
597 | ||
598 | } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetUser")) { | |
599 | uint32_t uid; | |
600 | char *p; | |
601 | User *user; | |
602 | bool b; | |
603 | ||
604 | if (!dbus_message_get_args( | |
605 | message, | |
606 | &error, | |
607 | DBUS_TYPE_UINT32, &uid, | |
608 | DBUS_TYPE_INVALID)) | |
609 | return bus_send_error_reply(connection, message, &error, -EINVAL); | |
610 | ||
611 | user = hashmap_get(m->users, ULONG_TO_PTR((unsigned long) uid)); | |
612 | if (!user) | |
613 | return bus_send_error_reply(connection, message, &error, -ENOENT); | |
614 | ||
615 | reply = dbus_message_new_method_return(message); | |
616 | if (!reply) | |
617 | goto oom; | |
618 | ||
619 | p = user_bus_path(user); | |
620 | if (!p) | |
621 | goto oom; | |
622 | ||
623 | b = dbus_message_append_args( | |
624 | reply, | |
625 | DBUS_TYPE_OBJECT_PATH, &p, | |
626 | DBUS_TYPE_INVALID); | |
627 | free(p); | |
628 | ||
629 | if (!b) | |
630 | goto oom; | |
631 | ||
632 | } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "GetSeat")) { | |
633 | const char *name; | |
634 | char *p; | |
635 | Seat *seat; | |
636 | bool b; | |
637 | ||
638 | if (!dbus_message_get_args( | |
639 | message, | |
640 | &error, | |
641 | DBUS_TYPE_STRING, &name, | |
642 | DBUS_TYPE_INVALID)) | |
643 | return bus_send_error_reply(connection, message, &error, -EINVAL); | |
644 | ||
645 | seat = hashmap_get(m->seats, name); | |
646 | if (!seat) | |
647 | return bus_send_error_reply(connection, message, &error, -ENOENT); | |
648 | ||
649 | reply = dbus_message_new_method_return(message); | |
650 | if (!reply) | |
651 | goto oom; | |
652 | ||
653 | p = seat_bus_path(seat); | |
654 | if (!p) | |
655 | goto oom; | |
656 | ||
657 | b = dbus_message_append_args( | |
658 | reply, | |
659 | DBUS_TYPE_OBJECT_PATH, &p, | |
660 | DBUS_TYPE_INVALID); | |
661 | free(p); | |
662 | ||
663 | if (!b) | |
664 | goto oom; | |
665 | ||
e1c9c2d5 LP |
666 | } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ListSessions")) { |
667 | char *p; | |
668 | Session *session; | |
669 | Iterator i; | |
670 | DBusMessageIter iter, sub; | |
671 | const char *empty = ""; | |
672 | ||
673 | reply = dbus_message_new_method_return(message); | |
674 | if (!reply) | |
675 | goto oom; | |
676 | ||
677 | dbus_message_iter_init_append(reply, &iter); | |
678 | ||
dec15e92 | 679 | if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(susso)", &sub)) |
e1c9c2d5 LP |
680 | goto oom; |
681 | ||
682 | HASHMAP_FOREACH(session, m->sessions, i) { | |
683 | DBusMessageIter sub2; | |
684 | uint32_t uid; | |
685 | ||
686 | if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2)) | |
687 | goto oom; | |
688 | ||
689 | uid = session->user->uid; | |
690 | ||
691 | p = session_bus_path(session); | |
692 | if (!p) | |
693 | goto oom; | |
694 | ||
695 | if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &session->id) || | |
696 | !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &uid) || | |
697 | !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &session->user->name) || | |
698 | !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, session->seat ? (const char**) &session->seat->id : &empty) || | |
699 | !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &p)) { | |
700 | free(p); | |
701 | goto oom; | |
702 | } | |
703 | ||
704 | free(p); | |
705 | ||
706 | if (!dbus_message_iter_close_container(&sub, &sub2)) | |
707 | goto oom; | |
708 | } | |
709 | ||
710 | if (!dbus_message_iter_close_container(&iter, &sub)) | |
711 | goto oom; | |
712 | ||
713 | } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ListUsers")) { | |
714 | char *p; | |
715 | User *user; | |
716 | Iterator i; | |
717 | DBusMessageIter iter, sub; | |
718 | ||
719 | reply = dbus_message_new_method_return(message); | |
720 | if (!reply) | |
721 | goto oom; | |
722 | ||
723 | dbus_message_iter_init_append(reply, &iter); | |
724 | ||
dec15e92 | 725 | if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(uso)", &sub)) |
e1c9c2d5 LP |
726 | goto oom; |
727 | ||
728 | HASHMAP_FOREACH(user, m->users, i) { | |
729 | DBusMessageIter sub2; | |
730 | uint32_t uid; | |
731 | ||
732 | if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2)) | |
733 | goto oom; | |
734 | ||
735 | uid = user->uid; | |
736 | ||
737 | p = user_bus_path(user); | |
738 | if (!p) | |
739 | goto oom; | |
740 | ||
741 | if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &uid) || | |
742 | !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &user->name) || | |
743 | !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &p)) { | |
744 | free(p); | |
745 | goto oom; | |
746 | } | |
747 | ||
748 | free(p); | |
749 | ||
750 | if (!dbus_message_iter_close_container(&sub, &sub2)) | |
751 | goto oom; | |
752 | } | |
753 | ||
754 | if (!dbus_message_iter_close_container(&iter, &sub)) | |
755 | goto oom; | |
756 | ||
757 | } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ListSeats")) { | |
758 | char *p; | |
759 | Seat *seat; | |
760 | Iterator i; | |
761 | DBusMessageIter iter, sub; | |
762 | ||
763 | reply = dbus_message_new_method_return(message); | |
764 | if (!reply) | |
765 | goto oom; | |
766 | ||
767 | dbus_message_iter_init_append(reply, &iter); | |
768 | ||
dec15e92 | 769 | if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(so)", &sub)) |
e1c9c2d5 LP |
770 | goto oom; |
771 | ||
772 | HASHMAP_FOREACH(seat, m->seats, i) { | |
773 | DBusMessageIter sub2; | |
774 | ||
775 | if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2)) | |
776 | goto oom; | |
777 | ||
778 | p = seat_bus_path(seat); | |
779 | if (!p) | |
780 | goto oom; | |
781 | ||
782 | if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &seat->id) || | |
783 | !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &p)) { | |
784 | free(p); | |
785 | goto oom; | |
786 | } | |
787 | ||
788 | free(p); | |
789 | ||
790 | if (!dbus_message_iter_close_container(&sub, &sub2)) | |
791 | goto oom; | |
792 | } | |
793 | ||
794 | if (!dbus_message_iter_close_container(&iter, &sub)) | |
795 | goto oom; | |
796 | ||
98a28fef LP |
797 | } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "CreateSession")) { |
798 | ||
799 | r = bus_manager_create_session(m, message, &reply); | |
800 | if (r == -ENOMEM) | |
801 | goto oom; | |
802 | ||
803 | if (r < 0) | |
804 | return bus_send_error_reply(connection, message, &error, r); | |
805 | ||
bef422ae LP |
806 | } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "ActivateSession")) { |
807 | const char *name; | |
808 | Session *session; | |
809 | ||
810 | if (!dbus_message_get_args( | |
811 | message, | |
812 | &error, | |
813 | DBUS_TYPE_STRING, &name, | |
814 | DBUS_TYPE_INVALID)) | |
815 | return bus_send_error_reply(connection, message, &error, -EINVAL); | |
816 | ||
817 | session = hashmap_get(m->sessions, name); | |
818 | if (!session) | |
819 | return bus_send_error_reply(connection, message, &error, -ENOENT); | |
820 | ||
821 | r = session_activate(session); | |
822 | if (r < 0) | |
823 | return bus_send_error_reply(connection, message, NULL, r); | |
824 | ||
825 | reply = dbus_message_new_method_return(message); | |
826 | if (!reply) | |
827 | goto oom; | |
828 | ||
829 | } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "TerminateSession")) { | |
830 | const char *name; | |
831 | Session *session; | |
832 | ||
833 | if (!dbus_message_get_args( | |
834 | message, | |
835 | &error, | |
836 | DBUS_TYPE_STRING, &name, | |
837 | DBUS_TYPE_INVALID)) | |
838 | return bus_send_error_reply(connection, message, &error, -EINVAL); | |
839 | ||
840 | session = hashmap_get(m->sessions, name); | |
841 | if (!session) | |
842 | return bus_send_error_reply(connection, message, &error, -ENOENT); | |
843 | ||
844 | r = session_stop(session); | |
845 | if (r < 0) | |
846 | return bus_send_error_reply(connection, message, NULL, r); | |
847 | ||
848 | reply = dbus_message_new_method_return(message); | |
849 | if (!reply) | |
850 | goto oom; | |
851 | ||
852 | } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "TerminateUser")) { | |
853 | uint32_t uid; | |
854 | User *user; | |
855 | ||
856 | if (!dbus_message_get_args( | |
857 | message, | |
858 | &error, | |
859 | DBUS_TYPE_UINT32, &uid, | |
860 | DBUS_TYPE_INVALID)) | |
861 | return bus_send_error_reply(connection, message, &error, -EINVAL); | |
862 | ||
863 | user = hashmap_get(m->users, ULONG_TO_PTR((unsigned long) uid)); | |
864 | if (!user) | |
865 | return bus_send_error_reply(connection, message, &error, -ENOENT); | |
866 | ||
867 | r = user_stop(user); | |
868 | if (r < 0) | |
869 | return bus_send_error_reply(connection, message, NULL, r); | |
870 | ||
871 | reply = dbus_message_new_method_return(message); | |
872 | if (!reply) | |
873 | goto oom; | |
874 | ||
875 | } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "TerminateSeat")) { | |
876 | const char *name; | |
877 | Seat *seat; | |
878 | ||
879 | if (!dbus_message_get_args( | |
880 | message, | |
881 | &error, | |
882 | DBUS_TYPE_STRING, &name, | |
883 | DBUS_TYPE_INVALID)) | |
884 | return bus_send_error_reply(connection, message, &error, -EINVAL); | |
885 | ||
886 | seat = hashmap_get(m->seats, name); | |
887 | if (!seat) | |
888 | return bus_send_error_reply(connection, message, &error, -ENOENT); | |
889 | ||
890 | r = seat_stop_sessions(seat); | |
891 | if (r < 0) | |
892 | return bus_send_error_reply(connection, message, NULL, r); | |
893 | ||
894 | reply = dbus_message_new_method_return(message); | |
895 | if (!reply) | |
896 | goto oom; | |
897 | ||
7f7bb946 LP |
898 | } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "SetUserLinger")) { |
899 | uint32_t uid; | |
900 | struct passwd *pw; | |
901 | dbus_bool_t b, interactive; | |
902 | char *path; | |
903 | ||
904 | if (!dbus_message_get_args( | |
905 | message, | |
906 | &error, | |
907 | DBUS_TYPE_UINT32, &uid, | |
908 | DBUS_TYPE_BOOLEAN, &b, | |
909 | DBUS_TYPE_BOOLEAN, &interactive, | |
910 | DBUS_TYPE_INVALID)) | |
911 | return bus_send_error_reply(connection, message, &error, -EINVAL); | |
912 | ||
913 | errno = 0; | |
914 | pw = getpwuid(uid); | |
915 | if (!pw) | |
916 | return bus_send_error_reply(connection, message, NULL, errno ? -errno : -EINVAL); | |
917 | ||
918 | r = verify_polkit(connection, message, "org.freedesktop.login1.set-user-linger", interactive, &error); | |
919 | if (r < 0) | |
920 | return bus_send_error_reply(connection, message, &error, r); | |
921 | ||
922 | r = safe_mkdir("/var/lib/systemd/linger", 0755, 0, 0); | |
923 | if (r < 0) | |
924 | return bus_send_error_reply(connection, message, &error, r); | |
925 | ||
926 | path = strappend("/var/lib/systemd/linger/", pw->pw_name); | |
927 | if (!path) | |
928 | goto oom; | |
929 | ||
930 | if (b) { | |
38f3fc7d LP |
931 | User *u; |
932 | ||
7f7bb946 LP |
933 | r = touch(path); |
934 | free(path); | |
935 | ||
936 | if (r < 0) | |
937 | return bus_send_error_reply(connection, message, &error, r); | |
38f3fc7d LP |
938 | |
939 | if (manager_add_user_by_uid(m, uid, &u) >= 0) | |
940 | user_start(u); | |
941 | ||
7f7bb946 | 942 | } else { |
38f3fc7d LP |
943 | User *u; |
944 | ||
7f7bb946 LP |
945 | r = unlink(path); |
946 | free(path); | |
947 | ||
948 | if (r < 0 && errno != ENOENT) | |
949 | return bus_send_error_reply(connection, message, &error, -errno); | |
38f3fc7d LP |
950 | |
951 | u = hashmap_get(m->users, ULONG_TO_PTR((unsigned long) uid)); | |
952 | if (u) | |
953 | user_add_to_gc_queue(u); | |
7f7bb946 LP |
954 | } |
955 | ||
956 | reply = dbus_message_new_method_return(message); | |
957 | if (!reply) | |
958 | goto oom; | |
959 | ||
960 | ||
bef422ae | 961 | } else if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) { |
3f49d45a LP |
962 | char *introspection = NULL; |
963 | FILE *f; | |
964 | Iterator i; | |
965 | Session *session; | |
966 | Seat *seat; | |
967 | User *user; | |
968 | size_t size; | |
969 | char *p; | |
970 | ||
971 | if (!(reply = dbus_message_new_method_return(message))) | |
972 | goto oom; | |
973 | ||
974 | /* We roll our own introspection code here, instead of | |
975 | * relying on bus_default_message_handler() because we | |
976 | * need to generate our introspection string | |
977 | * dynamically. */ | |
978 | ||
979 | if (!(f = open_memstream(&introspection, &size))) | |
980 | goto oom; | |
981 | ||
982 | fputs(INTROSPECTION_BEGIN, f); | |
983 | ||
984 | HASHMAP_FOREACH(seat, m->seats, i) { | |
985 | p = bus_path_escape(seat->id); | |
986 | ||
987 | if (p) { | |
988 | fprintf(f, "<node name=\"seat/%s\"/>", p); | |
989 | free(p); | |
990 | } | |
991 | } | |
992 | ||
993 | HASHMAP_FOREACH(user, m->users, i) | |
994 | fprintf(f, "<node name=\"user/%llu\"/>", (unsigned long long) user->uid); | |
995 | ||
996 | HASHMAP_FOREACH(session, m->sessions, i) { | |
997 | p = bus_path_escape(session->id); | |
998 | ||
999 | if (p) { | |
1000 | fprintf(f, "<node name=\"session/%s\"/>", p); | |
1001 | free(p); | |
1002 | } | |
1003 | } | |
1004 | ||
1005 | fputs(INTROSPECTION_END, f); | |
1006 | ||
1007 | if (ferror(f)) { | |
1008 | fclose(f); | |
1009 | free(introspection); | |
1010 | goto oom; | |
1011 | } | |
1012 | ||
1013 | fclose(f); | |
1014 | ||
1015 | if (!introspection) | |
1016 | goto oom; | |
1017 | ||
1018 | if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &introspection, DBUS_TYPE_INVALID)) { | |
1019 | free(introspection); | |
1020 | goto oom; | |
1021 | } | |
1022 | ||
1023 | free(introspection); | |
1024 | } else | |
1025 | return bus_default_message_handler(connection, message, NULL, INTERFACES_LIST, properties); | |
1026 | ||
1027 | if (reply) { | |
1028 | if (!dbus_connection_send(connection, reply, NULL)) | |
1029 | goto oom; | |
1030 | ||
1031 | dbus_message_unref(reply); | |
1032 | } | |
1033 | ||
1034 | return DBUS_HANDLER_RESULT_HANDLED; | |
1035 | ||
1036 | oom: | |
1037 | if (reply) | |
1038 | dbus_message_unref(reply); | |
1039 | ||
1040 | dbus_error_free(&error); | |
1041 | ||
1042 | return DBUS_HANDLER_RESULT_NEED_MEMORY; | |
1043 | } | |
1044 | ||
1045 | const DBusObjectPathVTable bus_manager_vtable = { | |
1046 | .message_function = manager_message_handler | |
1047 | }; | |
9418f147 | 1048 | |
1713813d LP |
1049 | DBusHandlerResult bus_message_filter( |
1050 | DBusConnection *connection, | |
1051 | DBusMessage *message, | |
1052 | void *userdata) { | |
1053 | ||
1054 | Manager *m = userdata; | |
1055 | DBusError error; | |
1056 | ||
1057 | assert(m); | |
1058 | assert(connection); | |
1059 | assert(message); | |
1060 | ||
1061 | dbus_error_init(&error); | |
1062 | ||
1063 | if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Agent", "Released")) { | |
1064 | const char *cgroup; | |
1065 | ||
1066 | if (!dbus_message_get_args(message, &error, | |
1067 | DBUS_TYPE_STRING, &cgroup, | |
1068 | DBUS_TYPE_INVALID)) | |
1069 | log_error("Failed to parse Released message: %s", bus_error_message(&error)); | |
1070 | else | |
1071 | manager_cgroup_notify_empty(m, cgroup); | |
1072 | } | |
1073 | ||
1074 | dbus_error_free(&error); | |
1075 | ||
1076 | return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; | |
1077 | } | |
1078 | ||
9418f147 LP |
1079 | int manager_send_changed(Manager *manager, const char *properties) { |
1080 | DBusMessage *m; | |
1081 | int r = -ENOMEM; | |
1082 | ||
1083 | assert(manager); | |
1084 | ||
1085 | m = bus_properties_changed_new("/org/freedesktop/login1", "org.freedesktop.login1.Manager", properties); | |
1086 | if (!m) | |
1087 | goto finish; | |
1088 | ||
1089 | if (!dbus_connection_send(manager->bus, m, NULL)) | |
1090 | goto finish; | |
1091 | ||
1092 | r = 0; | |
1093 | ||
1094 | finish: | |
1095 | if (m) | |
1096 | dbus_message_unref(m); | |
1097 | ||
1098 | return r; | |
1099 | } |