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 static int property_get_locked_hint(
186 const char *interface,
187 const char *property,
188 sd_bus_message *reply,
190 sd_bus_error *error) {
192 Session *s = userdata;
198 return sd_bus_message_append(reply, "b", session_get_locked_hint(s) > 0);
201 int bus_session_method_terminate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
202 Session *s = userdata;
208 r = bus_verify_polkit_async(
211 "org.freedesktop.login1.manage",
215 &s->manager->polkit_registry,
220 return 1; /* Will call us back */
222 r = session_stop(s, true);
226 return sd_bus_reply_method_return(message, NULL);
229 int bus_session_method_activate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
230 Session *s = userdata;
236 r = session_activate(s);
240 return sd_bus_reply_method_return(message, NULL);
243 int bus_session_method_lock(sd_bus_message *message, void *userdata, sd_bus_error *error) {
244 Session *s = userdata;
250 r = bus_verify_polkit_async(
253 "org.freedesktop.login1.lock-sessions",
257 &s->manager->polkit_registry,
262 return 1; /* Will call us back */
264 r = session_send_lock(s, strstr(sd_bus_message_get_member(message), "Lock"));
268 return sd_bus_reply_method_return(message, NULL);
271 static int method_set_idle_hint(sd_bus_message *message, void *userdata, sd_bus_error *error) {
272 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
273 Session *s = userdata;
280 r = sd_bus_message_read(message, "b", &b);
284 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
288 r = sd_bus_creds_get_euid(creds, &uid);
292 if (uid != 0 && uid != s->user->uid)
293 return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Only owner of session may set idle hint");
295 session_set_idle_hint(s, b);
297 return sd_bus_reply_method_return(message, NULL);
300 static int method_set_locked_hint(sd_bus_message *message, void *userdata, sd_bus_error *error) {
301 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
302 Session *s = userdata;
309 r = sd_bus_message_read(message, "b", &b);
313 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
317 r = sd_bus_creds_get_euid(creds, &uid);
321 if (uid != 0 && uid != s->user->uid)
322 return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Only owner of session may set locked hint");
324 session_set_locked_hint(s, b);
326 return sd_bus_reply_method_return(message, NULL);
329 int bus_session_method_kill(sd_bus_message *message, void *userdata, sd_bus_error *error) {
330 Session *s = userdata;
339 r = sd_bus_message_read(message, "si", &swho, &signo);
346 who = kill_who_from_string(swho);
348 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid kill parameter '%s'", swho);
351 if (!SIGNAL_VALID(signo))
352 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid signal %i", signo);
354 r = bus_verify_polkit_async(
357 "org.freedesktop.login1.manage",
361 &s->manager->polkit_registry,
366 return 1; /* Will call us back */
368 r = session_kill(s, who, signo);
372 return sd_bus_reply_method_return(message, NULL);
375 static int method_take_control(sd_bus_message *message, void *userdata, sd_bus_error *error) {
376 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
377 Session *s = userdata;
384 r = sd_bus_message_read(message, "b", &force);
388 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
392 r = sd_bus_creds_get_euid(creds, &uid);
396 if (uid != 0 && (force || uid != s->user->uid))
397 return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Only owner of session may take control");
399 r = session_set_controller(s, sd_bus_message_get_sender(message), force, true);
403 return sd_bus_reply_method_return(message, NULL);
406 static int method_release_control(sd_bus_message *message, void *userdata, sd_bus_error *error) {
407 Session *s = userdata;
412 if (!session_is_controller(s, sd_bus_message_get_sender(message)))
413 return sd_bus_error_setf(error, BUS_ERROR_NOT_IN_CONTROL, "You are not in control of this session");
415 session_drop_controller(s);
417 return sd_bus_reply_method_return(message, NULL);
420 static int method_take_device(sd_bus_message *message, void *userdata, sd_bus_error *error) {
421 Session *s = userdata;
422 uint32_t major, minor;
430 r = sd_bus_message_read(message, "uu", &major, &minor);
434 if (!session_is_controller(s, sd_bus_message_get_sender(message)))
435 return sd_bus_error_setf(error, BUS_ERROR_NOT_IN_CONTROL, "You are not in control of this session");
437 dev = makedev(major, minor);
438 sd = hashmap_get(s->devices, &dev);
440 /* We don't allow retrieving a device multiple times.
441 * The related ReleaseDevice call is not ref-counted.
442 * The caller should use dup() if it requires more
443 * than one fd (it would be functionally
445 return sd_bus_error_setf(error, BUS_ERROR_DEVICE_IS_TAKEN, "Device already taken");
447 r = session_device_new(s, dev, &sd);
451 r = sd_bus_reply_method_return(message, "hb", sd->fd, !sd->active);
453 session_device_free(sd);
458 static int method_release_device(sd_bus_message *message, void *userdata, sd_bus_error *error) {
459 Session *s = userdata;
460 uint32_t major, minor;
468 r = sd_bus_message_read(message, "uu", &major, &minor);
472 if (!session_is_controller(s, sd_bus_message_get_sender(message)))
473 return sd_bus_error_setf(error, BUS_ERROR_NOT_IN_CONTROL, "You are not in control of this session");
475 dev = makedev(major, minor);
476 sd = hashmap_get(s->devices, &dev);
478 return sd_bus_error_setf(error, BUS_ERROR_DEVICE_NOT_TAKEN, "Device not taken");
480 session_device_free(sd);
481 return sd_bus_reply_method_return(message, NULL);
484 static int method_pause_device_complete(sd_bus_message *message, void *userdata, sd_bus_error *error) {
485 Session *s = userdata;
486 uint32_t major, minor;
494 r = sd_bus_message_read(message, "uu", &major, &minor);
498 if (!session_is_controller(s, sd_bus_message_get_sender(message)))
499 return sd_bus_error_setf(error, BUS_ERROR_NOT_IN_CONTROL, "You are not in control of this session");
501 dev = makedev(major, minor);
502 sd = hashmap_get(s->devices, &dev);
504 return sd_bus_error_setf(error, BUS_ERROR_DEVICE_NOT_TAKEN, "Device not taken");
506 session_device_complete_pause(sd);
508 return sd_bus_reply_method_return(message, NULL);
511 const sd_bus_vtable session_vtable[] = {
512 SD_BUS_VTABLE_START(0),
514 SD_BUS_PROPERTY("Id", "s", NULL, offsetof(Session, id), SD_BUS_VTABLE_PROPERTY_CONST),
515 SD_BUS_PROPERTY("User", "(uo)", property_get_user, 0, SD_BUS_VTABLE_PROPERTY_CONST),
516 SD_BUS_PROPERTY("Name", "s", property_get_name, 0, SD_BUS_VTABLE_PROPERTY_CONST),
517 BUS_PROPERTY_DUAL_TIMESTAMP("Timestamp", offsetof(Session, timestamp), SD_BUS_VTABLE_PROPERTY_CONST),
518 SD_BUS_PROPERTY("VTNr", "u", NULL, offsetof(Session, vtnr), SD_BUS_VTABLE_PROPERTY_CONST),
519 SD_BUS_PROPERTY("Seat", "(so)", property_get_seat, 0, SD_BUS_VTABLE_PROPERTY_CONST),
520 SD_BUS_PROPERTY("TTY", "s", NULL, offsetof(Session, tty), SD_BUS_VTABLE_PROPERTY_CONST),
521 SD_BUS_PROPERTY("Display", "s", NULL, offsetof(Session, display), SD_BUS_VTABLE_PROPERTY_CONST),
522 SD_BUS_PROPERTY("Remote", "b", bus_property_get_bool, offsetof(Session, remote), SD_BUS_VTABLE_PROPERTY_CONST),
523 SD_BUS_PROPERTY("RemoteHost", "s", NULL, offsetof(Session, remote_host), SD_BUS_VTABLE_PROPERTY_CONST),
524 SD_BUS_PROPERTY("RemoteUser", "s", NULL, offsetof(Session, remote_user), SD_BUS_VTABLE_PROPERTY_CONST),
525 SD_BUS_PROPERTY("Service", "s", NULL, offsetof(Session, service), SD_BUS_VTABLE_PROPERTY_CONST),
526 SD_BUS_PROPERTY("Desktop", "s", NULL, offsetof(Session, desktop), SD_BUS_VTABLE_PROPERTY_CONST),
527 SD_BUS_PROPERTY("Scope", "s", NULL, offsetof(Session, scope), SD_BUS_VTABLE_PROPERTY_CONST),
528 SD_BUS_PROPERTY("Leader", "u", bus_property_get_pid, offsetof(Session, leader), SD_BUS_VTABLE_PROPERTY_CONST),
529 SD_BUS_PROPERTY("Audit", "u", NULL, offsetof(Session, audit_id), SD_BUS_VTABLE_PROPERTY_CONST),
530 SD_BUS_PROPERTY("Type", "s", property_get_type, offsetof(Session, type), SD_BUS_VTABLE_PROPERTY_CONST),
531 SD_BUS_PROPERTY("Class", "s", property_get_class, offsetof(Session, class), SD_BUS_VTABLE_PROPERTY_CONST),
532 SD_BUS_PROPERTY("Active", "b", property_get_active, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
533 SD_BUS_PROPERTY("State", "s", property_get_state, 0, 0),
534 SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
535 SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
536 SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
537 SD_BUS_PROPERTY("LockedHint", "b", property_get_locked_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
539 SD_BUS_METHOD("Terminate", NULL, NULL, bus_session_method_terminate, SD_BUS_VTABLE_UNPRIVILEGED),
540 SD_BUS_METHOD("Activate", NULL, NULL, bus_session_method_activate, SD_BUS_VTABLE_UNPRIVILEGED),
541 SD_BUS_METHOD("Lock", NULL, NULL, bus_session_method_lock, SD_BUS_VTABLE_UNPRIVILEGED),
542 SD_BUS_METHOD("Unlock", NULL, NULL, bus_session_method_lock, SD_BUS_VTABLE_UNPRIVILEGED),
543 SD_BUS_METHOD("SetIdleHint", "b", NULL, method_set_idle_hint, SD_BUS_VTABLE_UNPRIVILEGED),
544 SD_BUS_METHOD("SetLockedHint", "b", NULL, method_set_locked_hint, SD_BUS_VTABLE_UNPRIVILEGED),
545 SD_BUS_METHOD("Kill", "si", NULL, bus_session_method_kill, SD_BUS_VTABLE_UNPRIVILEGED),
546 SD_BUS_METHOD("TakeControl", "b", NULL, method_take_control, SD_BUS_VTABLE_UNPRIVILEGED),
547 SD_BUS_METHOD("ReleaseControl", NULL, NULL, method_release_control, SD_BUS_VTABLE_UNPRIVILEGED),
548 SD_BUS_METHOD("TakeDevice", "uu", "hb", method_take_device, SD_BUS_VTABLE_UNPRIVILEGED),
549 SD_BUS_METHOD("ReleaseDevice", "uu", NULL, method_release_device, SD_BUS_VTABLE_UNPRIVILEGED),
550 SD_BUS_METHOD("PauseDeviceComplete", "uu", NULL, method_pause_device_complete, SD_BUS_VTABLE_UNPRIVILEGED),
552 SD_BUS_SIGNAL("PauseDevice", "uus", 0),
553 SD_BUS_SIGNAL("ResumeDevice", "uuh", 0),
554 SD_BUS_SIGNAL("Lock", NULL, 0),
555 SD_BUS_SIGNAL("Unlock", NULL, 0),
560 int session_object_find(sd_bus *bus, const char *path, const char *interface, void *userdata, void **found, sd_bus_error *error) {
561 Manager *m = userdata;
571 if (streq(path, "/org/freedesktop/login1/session/self")) {
572 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
573 sd_bus_message *message;
576 message = sd_bus_get_current_message(bus);
580 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_SESSION|SD_BUS_CREDS_AUGMENT, &creds);
584 r = sd_bus_creds_get_session(creds, &name);
588 session = hashmap_get(m->sessions, name);
590 _cleanup_free_ char *e = NULL;
593 p = startswith(path, "/org/freedesktop/login1/session/");
597 e = bus_label_unescape(p);
601 session = hashmap_get(m->sessions, e);
611 char *session_bus_path(Session *s) {
612 _cleanup_free_ char *t = NULL;
616 t = bus_label_escape(s->id);
620 return strappend("/org/freedesktop/login1/session/", t);
623 int session_node_enumerator(sd_bus *bus, const char *path, void *userdata, char ***nodes, sd_bus_error *error) {
624 _cleanup_strv_free_ char **l = NULL;
625 sd_bus_message *message;
626 Manager *m = userdata;
635 HASHMAP_FOREACH(session, m->sessions, i) {
638 p = session_bus_path(session);
642 r = strv_consume(&l, p);
647 message = sd_bus_get_current_message(bus);
649 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
652 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_SESSION|SD_BUS_CREDS_AUGMENT, &creds);
654 r = sd_bus_creds_get_session(creds, &name);
656 session = hashmap_get(m->sessions, name);
658 r = strv_extend(&l, "/org/freedesktop/login1/session/self");
672 int session_send_signal(Session *s, bool new_session) {
673 _cleanup_free_ char *p = NULL;
677 p = session_bus_path(s);
681 return sd_bus_emit_signal(
683 "/org/freedesktop/login1",
684 "org.freedesktop.login1.Manager",
685 new_session ? "SessionNew" : "SessionRemoved",
689 int session_send_changed(Session *s, const char *properties, ...) {
690 _cleanup_free_ char *p = NULL;
698 p = session_bus_path(s);
702 l = strv_from_stdarg_alloca(properties);
704 return sd_bus_emit_properties_changed_strv(s->manager->bus, p, "org.freedesktop.login1.Session", l);
707 int session_send_lock(Session *s, bool lock) {
708 _cleanup_free_ char *p = NULL;
712 p = session_bus_path(s);
716 return sd_bus_emit_signal(
719 "org.freedesktop.login1.Session",
720 lock ? "Lock" : "Unlock",
724 int session_send_lock_all(Manager *m, bool lock) {
731 HASHMAP_FOREACH(session, m->sessions, i) {
734 k = session_send_lock(session, lock);
742 int session_send_create_reply(Session *s, sd_bus_error *error) {
743 _cleanup_(sd_bus_message_unrefp) sd_bus_message *c = NULL;
744 _cleanup_close_ int fifo_fd = -1;
745 _cleanup_free_ char *p = NULL;
749 /* This is called after the session scope and the user service
750 * were successfully created, and finishes where
751 * bus_manager_create_session() left off. */
753 if (!s->create_message)
756 #if 0 /// elogind does not support scope and service jobs
757 if (!sd_bus_error_is_set(error) && (s->scope_job || s->user->service_job))
761 c = s->create_message;
762 s->create_message = NULL;
765 return sd_bus_reply_method_error(c, error);
767 fifo_fd = session_create_fifo(s);
771 /* Update the session state file before we notify the client
772 * about the result. */
775 #if 1 /// Additionally elogind saves the user state file
778 p = session_bus_path(s);
782 log_debug("Sending reply about created session: "
783 "id=%s object_path=%s uid=%u runtime_path=%s "
784 "session_fd=%d seat=%s vtnr=%u",
787 (uint32_t) s->user->uid,
788 s->user->runtime_path,
790 s->seat ? s->seat->id : "",
793 return sd_bus_reply_method_return(
797 s->user->runtime_path,
799 (uint32_t) s->user->uid,
800 s->seat ? s->seat->id : "",