1 /* SPDX-License-Identifier: LGPL-2.1+ */
6 #include "alloc-util.h"
7 #include "bus-common-errors.h"
11 #include "logind-session-device.h"
12 #include "logind-session.h"
14 #include "signal-util.h"
18 static int property_get_user(
21 const char *interface
,
23 sd_bus_message
*reply
,
25 sd_bus_error
*error
) {
27 _cleanup_free_
char *p
= NULL
;
28 Session
*s
= userdata
;
34 p
= user_bus_path(s
->user
);
38 return sd_bus_message_append(reply
, "(uo)", (uint32_t) s
->user
->uid
, p
);
41 static int property_get_name(
44 const char *interface
,
46 sd_bus_message
*reply
,
48 sd_bus_error
*error
) {
50 Session
*s
= userdata
;
56 return sd_bus_message_append(reply
, "s", s
->user
->name
);
59 static int property_get_seat(
62 const char *interface
,
64 sd_bus_message
*reply
,
66 sd_bus_error
*error
) {
68 _cleanup_free_
char *p
= NULL
;
69 Session
*s
= userdata
;
75 p
= s
->seat
? seat_bus_path(s
->seat
) : strdup("/");
79 return sd_bus_message_append(reply
, "(so)", s
->seat
? s
->seat
->id
: "", p
);
82 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_type
, session_type
, SessionType
);
83 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_class
, session_class
, SessionClass
);
84 static BUS_DEFINE_PROPERTY_GET(property_get_active
, "b", Session
, session_is_active
);
85 static BUS_DEFINE_PROPERTY_GET2(property_get_state
, "s", Session
, session_get_state
, session_state_to_string
);
87 static int property_get_idle_hint(
90 const char *interface
,
92 sd_bus_message
*reply
,
94 sd_bus_error
*error
) {
96 Session
*s
= userdata
;
102 return sd_bus_message_append(reply
, "b", session_get_idle_hint(s
, NULL
) > 0);
105 static int property_get_idle_since_hint(
108 const char *interface
,
109 const char *property
,
110 sd_bus_message
*reply
,
112 sd_bus_error
*error
) {
114 Session
*s
= userdata
;
115 dual_timestamp t
= DUAL_TIMESTAMP_NULL
;
123 r
= session_get_idle_hint(s
, &t
);
127 u
= streq(property
, "IdleSinceHint") ? t
.realtime
: t
.monotonic
;
129 return sd_bus_message_append(reply
, "t", u
);
132 static int property_get_locked_hint(
135 const char *interface
,
136 const char *property
,
137 sd_bus_message
*reply
,
139 sd_bus_error
*error
) {
141 Session
*s
= userdata
;
147 return sd_bus_message_append(reply
, "b", session_get_locked_hint(s
) > 0);
150 int bus_session_method_terminate(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
151 Session
*s
= userdata
;
157 r
= bus_verify_polkit_async(
160 "org.freedesktop.login1.manage",
164 &s
->manager
->polkit_registry
,
169 return 1; /* Will call us back */
171 r
= session_stop(s
, true);
175 return sd_bus_reply_method_return(message
, NULL
);
178 int bus_session_method_activate(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
179 Session
*s
= userdata
;
185 r
= session_activate(s
);
189 return sd_bus_reply_method_return(message
, NULL
);
192 int bus_session_method_lock(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
193 Session
*s
= userdata
;
199 r
= bus_verify_polkit_async(
202 "org.freedesktop.login1.lock-sessions",
206 &s
->manager
->polkit_registry
,
211 return 1; /* Will call us back */
213 r
= session_send_lock(s
, strstr(sd_bus_message_get_member(message
), "Lock"));
217 return sd_bus_reply_method_return(message
, NULL
);
220 static int method_set_idle_hint(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
221 _cleanup_(sd_bus_creds_unrefp
) sd_bus_creds
*creds
= NULL
;
222 Session
*s
= userdata
;
229 r
= sd_bus_message_read(message
, "b", &b
);
233 r
= sd_bus_query_sender_creds(message
, SD_BUS_CREDS_EUID
, &creds
);
237 r
= sd_bus_creds_get_euid(creds
, &uid
);
241 if (uid
!= 0 && uid
!= s
->user
->uid
)
242 return sd_bus_error_setf(error
, SD_BUS_ERROR_ACCESS_DENIED
, "Only owner of session may set idle hint");
244 session_set_idle_hint(s
, b
);
246 return sd_bus_reply_method_return(message
, NULL
);
249 static int method_set_locked_hint(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
250 _cleanup_(sd_bus_creds_unrefp
) sd_bus_creds
*creds
= NULL
;
251 Session
*s
= userdata
;
258 r
= sd_bus_message_read(message
, "b", &b
);
262 r
= sd_bus_query_sender_creds(message
, SD_BUS_CREDS_EUID
, &creds
);
266 r
= sd_bus_creds_get_euid(creds
, &uid
);
270 if (uid
!= 0 && uid
!= s
->user
->uid
)
271 return sd_bus_error_setf(error
, SD_BUS_ERROR_ACCESS_DENIED
, "Only owner of session may set locked hint");
273 session_set_locked_hint(s
, b
);
275 return sd_bus_reply_method_return(message
, NULL
);
278 int bus_session_method_kill(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
279 Session
*s
= userdata
;
288 r
= sd_bus_message_read(message
, "si", &swho
, &signo
);
295 who
= kill_who_from_string(swho
);
297 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid kill parameter '%s'", swho
);
300 if (!SIGNAL_VALID(signo
))
301 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid signal %i", signo
);
303 r
= bus_verify_polkit_async(
306 "org.freedesktop.login1.manage",
310 &s
->manager
->polkit_registry
,
315 return 1; /* Will call us back */
317 r
= session_kill(s
, who
, signo
);
321 return sd_bus_reply_method_return(message
, NULL
);
324 static int method_take_control(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
325 _cleanup_(sd_bus_creds_unrefp
) sd_bus_creds
*creds
= NULL
;
326 Session
*s
= userdata
;
333 r
= sd_bus_message_read(message
, "b", &force
);
337 r
= sd_bus_query_sender_creds(message
, SD_BUS_CREDS_EUID
, &creds
);
341 r
= sd_bus_creds_get_euid(creds
, &uid
);
345 if (uid
!= 0 && (force
|| uid
!= s
->user
->uid
))
346 return sd_bus_error_setf(error
, SD_BUS_ERROR_ACCESS_DENIED
, "Only owner of session may take control");
348 r
= session_set_controller(s
, sd_bus_message_get_sender(message
), force
, true);
352 return sd_bus_reply_method_return(message
, NULL
);
355 static int method_release_control(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
356 Session
*s
= userdata
;
361 if (!session_is_controller(s
, sd_bus_message_get_sender(message
)))
362 return sd_bus_error_setf(error
, BUS_ERROR_NOT_IN_CONTROL
, "You are not in control of this session");
364 session_drop_controller(s
);
366 return sd_bus_reply_method_return(message
, NULL
);
369 static int method_take_device(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
370 Session
*s
= userdata
;
371 uint32_t major
, minor
;
379 r
= sd_bus_message_read(message
, "uu", &major
, &minor
);
383 if (!session_is_controller(s
, sd_bus_message_get_sender(message
)))
384 return sd_bus_error_setf(error
, BUS_ERROR_NOT_IN_CONTROL
, "You are not in control of this session");
386 dev
= makedev(major
, minor
);
387 sd
= hashmap_get(s
->devices
, &dev
);
389 /* We don't allow retrieving a device multiple times.
390 * The related ReleaseDevice call is not ref-counted.
391 * The caller should use dup() if it requires more
392 * than one fd (it would be functionally
394 return sd_bus_error_setf(error
, BUS_ERROR_DEVICE_IS_TAKEN
, "Device already taken");
396 r
= session_device_new(s
, dev
, true, &sd
);
400 r
= session_device_save(sd
);
404 r
= sd_bus_reply_method_return(message
, "hb", sd
->fd
, !sd
->active
);
412 session_device_free(sd
);
416 static int method_release_device(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
417 Session
*s
= userdata
;
418 uint32_t major
, minor
;
426 r
= sd_bus_message_read(message
, "uu", &major
, &minor
);
430 if (!session_is_controller(s
, sd_bus_message_get_sender(message
)))
431 return sd_bus_error_setf(error
, BUS_ERROR_NOT_IN_CONTROL
, "You are not in control of this session");
433 dev
= makedev(major
, minor
);
434 sd
= hashmap_get(s
->devices
, &dev
);
436 return sd_bus_error_setf(error
, BUS_ERROR_DEVICE_NOT_TAKEN
, "Device not taken");
438 session_device_free(sd
);
441 return sd_bus_reply_method_return(message
, NULL
);
444 static int method_pause_device_complete(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
445 Session
*s
= userdata
;
446 uint32_t major
, minor
;
454 r
= sd_bus_message_read(message
, "uu", &major
, &minor
);
458 if (!session_is_controller(s
, sd_bus_message_get_sender(message
)))
459 return sd_bus_error_setf(error
, BUS_ERROR_NOT_IN_CONTROL
, "You are not in control of this session");
461 dev
= makedev(major
, minor
);
462 sd
= hashmap_get(s
->devices
, &dev
);
464 return sd_bus_error_setf(error
, BUS_ERROR_DEVICE_NOT_TAKEN
, "Device not taken");
466 session_device_complete_pause(sd
);
468 return sd_bus_reply_method_return(message
, NULL
);
471 const sd_bus_vtable session_vtable
[] = {
472 SD_BUS_VTABLE_START(0),
474 SD_BUS_PROPERTY("Id", "s", NULL
, offsetof(Session
, id
), SD_BUS_VTABLE_PROPERTY_CONST
),
475 SD_BUS_PROPERTY("User", "(uo)", property_get_user
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
476 SD_BUS_PROPERTY("Name", "s", property_get_name
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
477 BUS_PROPERTY_DUAL_TIMESTAMP("Timestamp", offsetof(Session
, timestamp
), SD_BUS_VTABLE_PROPERTY_CONST
),
478 SD_BUS_PROPERTY("VTNr", "u", NULL
, offsetof(Session
, vtnr
), SD_BUS_VTABLE_PROPERTY_CONST
),
479 SD_BUS_PROPERTY("Seat", "(so)", property_get_seat
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
480 SD_BUS_PROPERTY("TTY", "s", NULL
, offsetof(Session
, tty
), SD_BUS_VTABLE_PROPERTY_CONST
),
481 SD_BUS_PROPERTY("Display", "s", NULL
, offsetof(Session
, display
), SD_BUS_VTABLE_PROPERTY_CONST
),
482 SD_BUS_PROPERTY("Remote", "b", bus_property_get_bool
, offsetof(Session
, remote
), SD_BUS_VTABLE_PROPERTY_CONST
),
483 SD_BUS_PROPERTY("RemoteHost", "s", NULL
, offsetof(Session
, remote_host
), SD_BUS_VTABLE_PROPERTY_CONST
),
484 SD_BUS_PROPERTY("RemoteUser", "s", NULL
, offsetof(Session
, remote_user
), SD_BUS_VTABLE_PROPERTY_CONST
),
485 SD_BUS_PROPERTY("Service", "s", NULL
, offsetof(Session
, service
), SD_BUS_VTABLE_PROPERTY_CONST
),
486 SD_BUS_PROPERTY("Desktop", "s", NULL
, offsetof(Session
, desktop
), SD_BUS_VTABLE_PROPERTY_CONST
),
487 SD_BUS_PROPERTY("Scope", "s", NULL
, offsetof(Session
, scope
), SD_BUS_VTABLE_PROPERTY_CONST
),
488 SD_BUS_PROPERTY("Leader", "u", bus_property_get_pid
, offsetof(Session
, leader
), SD_BUS_VTABLE_PROPERTY_CONST
),
489 SD_BUS_PROPERTY("Audit", "u", NULL
, offsetof(Session
, audit_id
), SD_BUS_VTABLE_PROPERTY_CONST
),
490 SD_BUS_PROPERTY("Type", "s", property_get_type
, offsetof(Session
, type
), SD_BUS_VTABLE_PROPERTY_CONST
),
491 SD_BUS_PROPERTY("Class", "s", property_get_class
, offsetof(Session
, class), SD_BUS_VTABLE_PROPERTY_CONST
),
492 SD_BUS_PROPERTY("Active", "b", property_get_active
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
493 SD_BUS_PROPERTY("State", "s", property_get_state
, 0, 0),
494 SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
495 SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
496 SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
497 SD_BUS_PROPERTY("LockedHint", "b", property_get_locked_hint
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
499 SD_BUS_METHOD("Terminate", NULL
, NULL
, bus_session_method_terminate
, SD_BUS_VTABLE_UNPRIVILEGED
),
500 SD_BUS_METHOD("Activate", NULL
, NULL
, bus_session_method_activate
, SD_BUS_VTABLE_UNPRIVILEGED
),
501 SD_BUS_METHOD("Lock", NULL
, NULL
, bus_session_method_lock
, SD_BUS_VTABLE_UNPRIVILEGED
),
502 SD_BUS_METHOD("Unlock", NULL
, NULL
, bus_session_method_lock
, SD_BUS_VTABLE_UNPRIVILEGED
),
503 SD_BUS_METHOD("SetIdleHint", "b", NULL
, method_set_idle_hint
, SD_BUS_VTABLE_UNPRIVILEGED
),
504 SD_BUS_METHOD("SetLockedHint", "b", NULL
, method_set_locked_hint
, SD_BUS_VTABLE_UNPRIVILEGED
),
505 SD_BUS_METHOD("Kill", "si", NULL
, bus_session_method_kill
, SD_BUS_VTABLE_UNPRIVILEGED
),
506 SD_BUS_METHOD("TakeControl", "b", NULL
, method_take_control
, SD_BUS_VTABLE_UNPRIVILEGED
),
507 SD_BUS_METHOD("ReleaseControl", NULL
, NULL
, method_release_control
, SD_BUS_VTABLE_UNPRIVILEGED
),
508 SD_BUS_METHOD("TakeDevice", "uu", "hb", method_take_device
, SD_BUS_VTABLE_UNPRIVILEGED
),
509 SD_BUS_METHOD("ReleaseDevice", "uu", NULL
, method_release_device
, SD_BUS_VTABLE_UNPRIVILEGED
),
510 SD_BUS_METHOD("PauseDeviceComplete", "uu", NULL
, method_pause_device_complete
, SD_BUS_VTABLE_UNPRIVILEGED
),
512 SD_BUS_SIGNAL("PauseDevice", "uus", 0),
513 SD_BUS_SIGNAL("ResumeDevice", "uuh", 0),
514 SD_BUS_SIGNAL("Lock", NULL
, 0),
515 SD_BUS_SIGNAL("Unlock", NULL
, 0),
520 int session_object_find(sd_bus
*bus
, const char *path
, const char *interface
, void *userdata
, void **found
, sd_bus_error
*error
) {
521 Manager
*m
= userdata
;
531 if (streq(path
, "/org/freedesktop/login1/session/self")) {
532 sd_bus_message
*message
;
534 message
= sd_bus_get_current_message(bus
);
538 r
= manager_get_session_from_creds(m
, message
, NULL
, error
, &session
);
542 _cleanup_free_
char *e
= NULL
;
545 p
= startswith(path
, "/org/freedesktop/login1/session/");
549 e
= bus_label_unescape(p
);
553 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");
617 *nodes
= TAKE_PTR(l
);
622 int session_send_signal(Session
*s
, bool new_session
) {
623 _cleanup_free_
char *p
= NULL
;
627 p
= session_bus_path(s
);
631 return sd_bus_emit_signal(
633 "/org/freedesktop/login1",
634 "org.freedesktop.login1.Manager",
635 new_session
? "SessionNew" : "SessionRemoved",
639 int session_send_changed(Session
*s
, const char *properties
, ...) {
640 _cleanup_free_
char *p
= NULL
;
648 p
= session_bus_path(s
);
652 l
= strv_from_stdarg_alloca(properties
);
654 return sd_bus_emit_properties_changed_strv(s
->manager
->bus
, p
, "org.freedesktop.login1.Session", l
);
657 int session_send_lock(Session
*s
, bool lock
) {
658 _cleanup_free_
char *p
= NULL
;
662 p
= session_bus_path(s
);
666 return sd_bus_emit_signal(
669 "org.freedesktop.login1.Session",
670 lock
? "Lock" : "Unlock",
674 int session_send_lock_all(Manager
*m
, bool lock
) {
681 HASHMAP_FOREACH(session
, m
->sessions
, i
) {
684 k
= session_send_lock(session
, lock
);
692 int session_send_create_reply(Session
*s
, sd_bus_error
*error
) {
693 _cleanup_(sd_bus_message_unrefp
) sd_bus_message
*c
= NULL
;
694 _cleanup_close_
int fifo_fd
= -1;
695 _cleanup_free_
char *p
= NULL
;
699 /* This is called after the session scope and the user service
700 * were successfully created, and finishes where
701 * bus_manager_create_session() left off. */
703 if (!s
->create_message
)
706 if (!sd_bus_error_is_set(error
) && (s
->scope_job
|| s
->user
->service_job
))
709 c
= TAKE_PTR(s
->create_message
);
711 return sd_bus_reply_method_error(c
, error
);
713 fifo_fd
= session_create_fifo(s
);
717 /* Update the session state file before we notify the client
718 * about the result. */
721 p
= session_bus_path(s
);
725 log_debug("Sending reply about created session: "
726 "id=%s object_path=%s uid=%u runtime_path=%s "
727 "session_fd=%d seat=%s vtnr=%u",
730 (uint32_t) s
->user
->uid
,
731 s
->user
->runtime_path
,
733 s
->seat
? s
->seat
->id
: "",
736 return sd_bus_reply_method_return(
740 s
->user
->runtime_path
,
742 (uint32_t) s
->user
->uid
,
743 s
->seat
? s
->seat
->id
: "",