2 This file is part of systemd.
4 Copyright 2011 Lennart Poettering
6 systemd is free software; you can redistribute it and/or modify it
7 under the terms of the GNU Lesser General Public License as published by
8 the Free Software Foundation; either version 2.1 of the License, or
9 (at your option) any later version.
11 systemd is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with systemd; If not, see <http://www.gnu.org/licenses/>.
23 #include "alloc-util.h"
24 #include "bus-common-errors.h"
25 #include "bus-label.h"
28 #include "logind-session-device.h"
29 #include "logind-session.h"
31 #include "signal-util.h"
35 static int property_get_user(
38 const char *interface,
40 sd_bus_message *reply,
42 sd_bus_error *error) {
44 _cleanup_free_ char *p = NULL;
45 Session *s = userdata;
51 p = user_bus_path(s->user);
55 return sd_bus_message_append(reply, "(uo)", (uint32_t) s->user->uid, p);
58 static int property_get_name(
61 const char *interface,
63 sd_bus_message *reply,
65 sd_bus_error *error) {
67 Session *s = userdata;
73 return sd_bus_message_append(reply, "s", s->user->name);
76 static int property_get_seat(
79 const char *interface,
81 sd_bus_message *reply,
83 sd_bus_error *error) {
85 _cleanup_free_ char *p = NULL;
86 Session *s = userdata;
92 p = s->seat ? seat_bus_path(s->seat) : strdup("/");
96 return sd_bus_message_append(reply, "(so)", s->seat ? s->seat->id : "", p);
99 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_type, session_type, SessionType);
100 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_class, session_class, SessionClass);
102 static int property_get_active(
105 const char *interface,
106 const char *property,
107 sd_bus_message *reply,
109 sd_bus_error *error) {
111 Session *s = userdata;
117 return sd_bus_message_append(reply, "b", session_is_active(s));
120 static int property_get_state(
123 const char *interface,
124 const char *property,
125 sd_bus_message *reply,
127 sd_bus_error *error) {
129 Session *s = userdata;
135 return sd_bus_message_append(reply, "s", session_state_to_string(session_get_state(s)));
138 static int property_get_idle_hint(
141 const char *interface,
142 const char *property,
143 sd_bus_message *reply,
145 sd_bus_error *error) {
147 Session *s = userdata;
153 return sd_bus_message_append(reply, "b", session_get_idle_hint(s, NULL) > 0);
156 static int property_get_idle_since_hint(
159 const char *interface,
160 const char *property,
161 sd_bus_message *reply,
163 sd_bus_error *error) {
165 Session *s = userdata;
166 dual_timestamp t = DUAL_TIMESTAMP_NULL;
174 r = session_get_idle_hint(s, &t);
178 u = streq(property, "IdleSinceHint") ? t.realtime : t.monotonic;
180 return sd_bus_message_append(reply, "t", u);
183 int bus_session_method_terminate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
184 Session *s = userdata;
190 r = bus_verify_polkit_async(
193 "org.freedesktop.login1.manage",
197 &s->manager->polkit_registry,
202 return 1; /* Will call us back */
204 r = session_stop(s, true);
208 return sd_bus_reply_method_return(message, NULL);
211 int bus_session_method_activate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
212 Session *s = userdata;
218 r = session_activate(s);
222 return sd_bus_reply_method_return(message, NULL);
225 int bus_session_method_lock(sd_bus_message *message, void *userdata, sd_bus_error *error) {
226 Session *s = userdata;
232 r = bus_verify_polkit_async(
235 "org.freedesktop.login1.lock-sessions",
239 &s->manager->polkit_registry,
244 return 1; /* Will call us back */
246 r = session_send_lock(s, strstr(sd_bus_message_get_member(message), "Lock"));
250 return sd_bus_reply_method_return(message, NULL);
253 static int method_set_idle_hint(sd_bus_message *message, void *userdata, sd_bus_error *error) {
254 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
255 Session *s = userdata;
262 r = sd_bus_message_read(message, "b", &b);
266 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
270 r = sd_bus_creds_get_euid(creds, &uid);
274 if (uid != 0 && uid != s->user->uid)
275 return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Only owner of session may set idle hint");
277 session_set_idle_hint(s, b);
279 return sd_bus_reply_method_return(message, NULL);
282 int bus_session_method_kill(sd_bus_message *message, void *userdata, sd_bus_error *error) {
283 Session *s = userdata;
292 r = sd_bus_message_read(message, "si", &swho, &signo);
299 who = kill_who_from_string(swho);
301 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid kill parameter '%s'", swho);
304 if (!SIGNAL_VALID(signo))
305 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid signal %i", signo);
307 r = bus_verify_polkit_async(
310 "org.freedesktop.login1.manage",
314 &s->manager->polkit_registry,
319 return 1; /* Will call us back */
321 r = session_kill(s, who, signo);
325 return sd_bus_reply_method_return(message, NULL);
328 static int method_take_control(sd_bus_message *message, void *userdata, sd_bus_error *error) {
329 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
330 Session *s = userdata;
337 r = sd_bus_message_read(message, "b", &force);
341 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
345 r = sd_bus_creds_get_euid(creds, &uid);
349 if (uid != 0 && (force || uid != s->user->uid))
350 return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Only owner of session may take control");
352 r = session_set_controller(s, sd_bus_message_get_sender(message), force);
356 return sd_bus_reply_method_return(message, NULL);
359 static int method_release_control(sd_bus_message *message, void *userdata, sd_bus_error *error) {
360 Session *s = userdata;
365 if (!session_is_controller(s, sd_bus_message_get_sender(message)))
366 return sd_bus_error_setf(error, BUS_ERROR_NOT_IN_CONTROL, "You are not in control of this session");
368 session_drop_controller(s);
370 return sd_bus_reply_method_return(message, NULL);
373 static int method_take_device(sd_bus_message *message, void *userdata, sd_bus_error *error) {
374 Session *s = userdata;
375 uint32_t major, minor;
383 r = sd_bus_message_read(message, "uu", &major, &minor);
387 if (!session_is_controller(s, sd_bus_message_get_sender(message)))
388 return sd_bus_error_setf(error, BUS_ERROR_NOT_IN_CONTROL, "You are not in control of this session");
390 dev = makedev(major, minor);
391 sd = hashmap_get(s->devices, &dev);
393 /* We don't allow retrieving a device multiple times.
394 * The related ReleaseDevice call is not ref-counted.
395 * The caller should use dup() if it requires more
396 * than one fd (it would be functionally
398 return sd_bus_error_setf(error, BUS_ERROR_DEVICE_IS_TAKEN, "Device already taken");
400 r = session_device_new(s, dev, &sd);
404 r = sd_bus_reply_method_return(message, "hb", sd->fd, !sd->active);
406 session_device_free(sd);
411 static int method_release_device(sd_bus_message *message, void *userdata, sd_bus_error *error) {
412 Session *s = userdata;
413 uint32_t major, minor;
421 r = sd_bus_message_read(message, "uu", &major, &minor);
425 if (!session_is_controller(s, sd_bus_message_get_sender(message)))
426 return sd_bus_error_setf(error, BUS_ERROR_NOT_IN_CONTROL, "You are not in control of this session");
428 dev = makedev(major, minor);
429 sd = hashmap_get(s->devices, &dev);
431 return sd_bus_error_setf(error, BUS_ERROR_DEVICE_NOT_TAKEN, "Device not taken");
433 session_device_free(sd);
434 return sd_bus_reply_method_return(message, NULL);
437 static int method_pause_device_complete(sd_bus_message *message, void *userdata, sd_bus_error *error) {
438 Session *s = userdata;
439 uint32_t major, minor;
447 r = sd_bus_message_read(message, "uu", &major, &minor);
451 if (!session_is_controller(s, sd_bus_message_get_sender(message)))
452 return sd_bus_error_setf(error, BUS_ERROR_NOT_IN_CONTROL, "You are not in control of this session");
454 dev = makedev(major, minor);
455 sd = hashmap_get(s->devices, &dev);
457 return sd_bus_error_setf(error, BUS_ERROR_DEVICE_NOT_TAKEN, "Device not taken");
459 session_device_complete_pause(sd);
461 return sd_bus_reply_method_return(message, NULL);
464 const sd_bus_vtable session_vtable[] = {
465 SD_BUS_VTABLE_START(0),
467 SD_BUS_PROPERTY("Id", "s", NULL, offsetof(Session, id), SD_BUS_VTABLE_PROPERTY_CONST),
468 SD_BUS_PROPERTY("User", "(uo)", property_get_user, 0, SD_BUS_VTABLE_PROPERTY_CONST),
469 SD_BUS_PROPERTY("Name", "s", property_get_name, 0, SD_BUS_VTABLE_PROPERTY_CONST),
470 BUS_PROPERTY_DUAL_TIMESTAMP("Timestamp", offsetof(Session, timestamp), SD_BUS_VTABLE_PROPERTY_CONST),
471 SD_BUS_PROPERTY("VTNr", "u", NULL, offsetof(Session, vtnr), SD_BUS_VTABLE_PROPERTY_CONST),
472 SD_BUS_PROPERTY("Seat", "(so)", property_get_seat, 0, SD_BUS_VTABLE_PROPERTY_CONST),
473 SD_BUS_PROPERTY("TTY", "s", NULL, offsetof(Session, tty), SD_BUS_VTABLE_PROPERTY_CONST),
474 SD_BUS_PROPERTY("Display", "s", NULL, offsetof(Session, display), SD_BUS_VTABLE_PROPERTY_CONST),
475 SD_BUS_PROPERTY("Remote", "b", bus_property_get_bool, offsetof(Session, remote), SD_BUS_VTABLE_PROPERTY_CONST),
476 SD_BUS_PROPERTY("RemoteHost", "s", NULL, offsetof(Session, remote_host), SD_BUS_VTABLE_PROPERTY_CONST),
477 SD_BUS_PROPERTY("RemoteUser", "s", NULL, offsetof(Session, remote_user), SD_BUS_VTABLE_PROPERTY_CONST),
478 SD_BUS_PROPERTY("Service", "s", NULL, offsetof(Session, service), SD_BUS_VTABLE_PROPERTY_CONST),
479 SD_BUS_PROPERTY("Desktop", "s", NULL, offsetof(Session, desktop), SD_BUS_VTABLE_PROPERTY_CONST),
480 SD_BUS_PROPERTY("Scope", "s", NULL, offsetof(Session, scope), SD_BUS_VTABLE_PROPERTY_CONST),
481 SD_BUS_PROPERTY("Leader", "u", bus_property_get_pid, offsetof(Session, leader), SD_BUS_VTABLE_PROPERTY_CONST),
482 SD_BUS_PROPERTY("Audit", "u", NULL, offsetof(Session, audit_id), SD_BUS_VTABLE_PROPERTY_CONST),
483 SD_BUS_PROPERTY("Type", "s", property_get_type, offsetof(Session, type), SD_BUS_VTABLE_PROPERTY_CONST),
484 SD_BUS_PROPERTY("Class", "s", property_get_class, offsetof(Session, class), SD_BUS_VTABLE_PROPERTY_CONST),
485 SD_BUS_PROPERTY("Active", "b", property_get_active, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
486 SD_BUS_PROPERTY("State", "s", property_get_state, 0, 0),
487 SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
488 SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
489 SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
491 SD_BUS_METHOD("Terminate", NULL, NULL, bus_session_method_terminate, SD_BUS_VTABLE_UNPRIVILEGED),
492 SD_BUS_METHOD("Activate", NULL, NULL, bus_session_method_activate, SD_BUS_VTABLE_UNPRIVILEGED),
493 SD_BUS_METHOD("Lock", NULL, NULL, bus_session_method_lock, SD_BUS_VTABLE_UNPRIVILEGED),
494 SD_BUS_METHOD("Unlock", NULL, NULL, bus_session_method_lock, SD_BUS_VTABLE_UNPRIVILEGED),
495 SD_BUS_METHOD("SetIdleHint", "b", NULL, method_set_idle_hint, SD_BUS_VTABLE_UNPRIVILEGED),
496 SD_BUS_METHOD("Kill", "si", NULL, bus_session_method_kill, SD_BUS_VTABLE_UNPRIVILEGED),
497 SD_BUS_METHOD("TakeControl", "b", NULL, method_take_control, SD_BUS_VTABLE_UNPRIVILEGED),
498 SD_BUS_METHOD("ReleaseControl", NULL, NULL, method_release_control, SD_BUS_VTABLE_UNPRIVILEGED),
499 SD_BUS_METHOD("TakeDevice", "uu", "hb", method_take_device, SD_BUS_VTABLE_UNPRIVILEGED),
500 SD_BUS_METHOD("ReleaseDevice", "uu", NULL, method_release_device, SD_BUS_VTABLE_UNPRIVILEGED),
501 SD_BUS_METHOD("PauseDeviceComplete", "uu", NULL, method_pause_device_complete, SD_BUS_VTABLE_UNPRIVILEGED),
503 SD_BUS_SIGNAL("PauseDevice", "uus", 0),
504 SD_BUS_SIGNAL("ResumeDevice", "uuh", 0),
505 SD_BUS_SIGNAL("Lock", NULL, 0),
506 SD_BUS_SIGNAL("Unlock", NULL, 0),
511 int session_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) {
512 Manager *m = userdata;
522 if (streq(path, "/org/freedesktop/login1/session/self")) {
523 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
524 sd_bus_message *message;
527 message = sd_bus_get_current_message(bus);
531 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_SESSION|SD_BUS_CREDS_AUGMENT, &creds);
535 r = sd_bus_creds_get_session(creds, &name);
539 session = hashmap_get(m->sessions, name);
541 _cleanup_free_ char *e = NULL;
544 p = startswith(path, "/org/freedesktop/login1/session/");
548 e = bus_label_unescape(p);
552 session = hashmap_get(m->sessions, e);
562 char *session_bus_path(Session *s) {
563 _cleanup_free_ char *t = NULL;
567 t = bus_label_escape(s->id);
571 return strappend("/org/freedesktop/login1/session/", t);
574 int session_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error) {
575 _cleanup_strv_free_ char **l = NULL;
576 sd_bus_message *message;
577 Manager *m = userdata;
586 HASHMAP_FOREACH(session, m->sessions, i) {
589 p = session_bus_path(session);
593 r = strv_consume(&l, p);
598 message = sd_bus_get_current_message(bus);
600 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
603 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_SESSION|SD_BUS_CREDS_AUGMENT, &creds);
605 r = sd_bus_creds_get_session(creds, &name);
607 session = hashmap_get(m->sessions, name);
609 r = strv_extend(&l, "/org/freedesktop/login1/session/self");
623 int session_send_signal(Session *s, bool new_session) {
624 _cleanup_free_ char *p = NULL;
628 p = session_bus_path(s);
632 return sd_bus_emit_signal(
634 "/org/freedesktop/login1",
635 "org.freedesktop.login1.Manager",
636 new_session ? "SessionNew" : "SessionRemoved",
640 int session_send_changed(Session *s, const char *properties, ...) {
641 _cleanup_free_ char *p = NULL;
649 p = session_bus_path(s);
653 l = strv_from_stdarg_alloca(properties);
655 return sd_bus_emit_properties_changed_strv(s->manager->bus, p, "org.freedesktop.login1.Session", l);
658 int session_send_lock(Session *s, bool lock) {
659 _cleanup_free_ char *p = NULL;
663 p = session_bus_path(s);
667 return sd_bus_emit_signal(
670 "org.freedesktop.login1.Session",
671 lock ? "Lock" : "Unlock",
675 int session_send_lock_all(Manager *m, bool lock) {
682 HASHMAP_FOREACH(session, m->sessions, i) {
685 k = session_send_lock(session, lock);
693 int session_send_create_reply(Session *s, sd_bus_error *error) {
694 _cleanup_(sd_bus_message_unrefp) sd_bus_message *c = NULL;
695 _cleanup_close_ int fifo_fd = -1;
696 _cleanup_free_ char *p = NULL;
700 /* This is called after the session scope and the user service
701 * were successfully created, and finishes where
702 * bus_manager_create_session() left off. */
704 if (!s->create_message)
707 #if 0 /// elogind does not support scope and service jobs
708 if (!sd_bus_error_is_set(error) && (s->scope_job || s->user->service_job))
712 c = s->create_message;
713 s->create_message = NULL;
716 return sd_bus_reply_method_error(c, error);
718 fifo_fd = session_create_fifo(s);
722 /* Update the session and user state files before we notify
723 * the client about the result. */
727 p = session_bus_path(s);
731 log_debug("Sending reply about created session: "
732 "id=%s object_path=%s uid=%u runtime_path=%s "
733 "session_fd=%d seat=%s vtnr=%u",
736 (uint32_t) s->user->uid,
737 s->user->runtime_path,
739 s->seat ? s->seat->id : "",
742 return sd_bus_reply_method_return(
746 s->user->runtime_path,
748 (uint32_t) s->user->uid,
749 s->seat ? s->seat->id : "",