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