1 /* SPDX-License-Identifier: LGPL-2.1+ */
5 #include "alloc-util.h"
6 #include "bus-common-errors.h"
7 #include "bus-get-properties.h"
9 #include "bus-polkit.h"
11 #include "logind-dbus.h"
12 #include "logind-seat-dbus.h"
13 #include "logind-seat.h"
14 #include "logind-session-dbus.h"
16 #include "missing_capability.h"
18 #include "user-util.h"
21 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_const_true
, "b", true);
22 static BUS_DEFINE_PROPERTY_GET(property_get_can_tty
, "b", Seat
, seat_can_tty
);
23 static BUS_DEFINE_PROPERTY_GET(property_get_can_graphical
, "b", Seat
, seat_can_graphical
);
25 static int property_get_active_session(
28 const char *interface
,
30 sd_bus_message
*reply
,
32 sd_bus_error
*error
) {
34 _cleanup_free_
char *p
= NULL
;
41 p
= s
->active
? session_bus_path(s
->active
) : strdup("/");
45 return sd_bus_message_append(reply
, "(so)", s
->active
? s
->active
->id
: "", p
);
48 static int property_get_sessions(
51 const char *interface
,
53 sd_bus_message
*reply
,
55 sd_bus_error
*error
) {
65 r
= sd_bus_message_open_container(reply
, 'a', "(so)");
69 LIST_FOREACH(sessions_by_seat
, session
, s
->sessions
) {
70 _cleanup_free_
char *p
= NULL
;
72 p
= session_bus_path(session
);
76 r
= sd_bus_message_append(reply
, "(so)", session
->id
, p
);
82 r
= sd_bus_message_close_container(reply
);
89 static int property_get_idle_hint(
92 const char *interface
,
94 sd_bus_message
*reply
,
96 sd_bus_error
*error
) {
104 return sd_bus_message_append(reply
, "b", seat_get_idle_hint(s
, NULL
) > 0);
107 static int property_get_idle_since_hint(
110 const char *interface
,
111 const char *property
,
112 sd_bus_message
*reply
,
114 sd_bus_error
*error
) {
125 r
= seat_get_idle_hint(s
, &t
);
129 u
= streq(property
, "IdleSinceHint") ? t
.realtime
: t
.monotonic
;
131 return sd_bus_message_append(reply
, "t", u
);
134 int bus_seat_method_terminate(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
141 r
= bus_verify_polkit_async(
144 "org.freedesktop.login1.manage",
148 &s
->manager
->polkit_registry
,
153 return 1; /* Will call us back */
155 r
= seat_stop_sessions(s
, true);
159 return sd_bus_reply_method_return(message
, NULL
);
162 static int method_activate_session(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
171 r
= sd_bus_message_read(message
, "s", &name
);
175 session
= hashmap_get(s
->manager
->sessions
, name
);
177 return sd_bus_error_setf(error
, BUS_ERROR_NO_SUCH_SESSION
, "No session '%s' known", name
);
179 if (session
->seat
!= s
)
180 return sd_bus_error_setf(error
, BUS_ERROR_SESSION_NOT_ON_SEAT
, "Session %s not on seat %s", name
, s
->id
);
182 r
= bus_verify_polkit_async(
185 "org.freedesktop.login1.chvt",
189 &s
->manager
->polkit_registry
,
194 return 1; /* Will call us back */
196 r
= session_activate(session
);
200 return sd_bus_reply_method_return(message
, NULL
);
203 static int method_switch_to(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
211 r
= sd_bus_message_read(message
, "u", &to
);
216 return sd_bus_error_setf(error
, SD_BUS_ERROR_INVALID_ARGS
, "Invalid virtual terminal");
218 r
= bus_verify_polkit_async(
221 "org.freedesktop.login1.chvt",
225 &s
->manager
->polkit_registry
,
230 return 1; /* Will call us back */
232 r
= seat_switch_to(s
, to
);
236 return sd_bus_reply_method_return(message
, NULL
);
239 static int method_switch_to_next(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
246 r
= bus_verify_polkit_async(
249 "org.freedesktop.login1.chvt",
253 &s
->manager
->polkit_registry
,
258 return 1; /* Will call us back */
260 r
= seat_switch_to_next(s
);
264 return sd_bus_reply_method_return(message
, NULL
);
267 static int method_switch_to_previous(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
274 r
= bus_verify_polkit_async(
277 "org.freedesktop.login1.chvt",
281 &s
->manager
->polkit_registry
,
286 return 1; /* Will call us back */
288 r
= seat_switch_to_previous(s
);
292 return sd_bus_reply_method_return(message
, NULL
);
295 static int seat_object_find(sd_bus
*bus
, const char *path
, const char *interface
, void *userdata
, void **found
, sd_bus_error
*error
) {
296 _cleanup_free_
char *e
= NULL
;
297 sd_bus_message
*message
;
298 Manager
*m
= userdata
;
309 p
= startswith(path
, "/org/freedesktop/login1/seat/");
313 e
= bus_label_unescape(p
);
317 message
= sd_bus_get_current_message(bus
);
319 r
= manager_get_seat_from_creds(m
, message
, e
, error
, &seat
);
321 sd_bus_error_free(error
);
331 char *seat_bus_path(Seat
*s
) {
332 _cleanup_free_
char *t
= NULL
;
336 t
= bus_label_escape(s
->id
);
340 return strjoin("/org/freedesktop/login1/seat/", t
);
343 static int seat_node_enumerator(sd_bus
*bus
, const char *path
, void *userdata
, char ***nodes
, sd_bus_error
*error
) {
344 _cleanup_strv_free_
char **l
= NULL
;
345 sd_bus_message
*message
;
346 Manager
*m
= userdata
;
354 HASHMAP_FOREACH(seat
, m
->seats
) {
357 p
= seat_bus_path(seat
);
361 r
= strv_consume(&l
, p
);
366 message
= sd_bus_get_current_message(bus
);
368 _cleanup_(sd_bus_creds_unrefp
) sd_bus_creds
*creds
= NULL
;
370 r
= sd_bus_query_sender_creds(message
, SD_BUS_CREDS_SESSION
|SD_BUS_CREDS_OWNER_UID
|SD_BUS_CREDS_AUGMENT
, &creds
);
372 bool may_auto
= false;
375 r
= sd_bus_creds_get_session(creds
, &name
);
379 session
= hashmap_get(m
->sessions
, name
);
380 if (session
&& session
->seat
) {
381 r
= strv_extend(&l
, "/org/freedesktop/login1/seat/self");
392 r
= sd_bus_creds_get_owner_uid(creds
, &uid
);
396 user
= hashmap_get(m
->users
, UID_TO_PTR(uid
));
397 may_auto
= user
&& user
->display
&& user
->display
->seat
;
402 r
= strv_extend(&l
, "/org/freedesktop/login1/seat/auto");
409 *nodes
= TAKE_PTR(l
);
413 int seat_send_signal(Seat
*s
, bool new_seat
) {
414 _cleanup_free_
char *p
= NULL
;
418 p
= seat_bus_path(s
);
422 return sd_bus_emit_signal(
424 "/org/freedesktop/login1",
425 "org.freedesktop.login1.Manager",
426 new_seat
? "SeatNew" : "SeatRemoved",
430 int seat_send_changed(Seat
*s
, const char *properties
, ...) {
431 _cleanup_free_
char *p
= NULL
;
439 p
= seat_bus_path(s
);
443 l
= strv_from_stdarg_alloca(properties
);
445 return sd_bus_emit_properties_changed_strv(s
->manager
->bus
, p
, "org.freedesktop.login1.Seat", l
);
448 static const sd_bus_vtable seat_vtable
[] = {
449 SD_BUS_VTABLE_START(0),
451 SD_BUS_PROPERTY("Id", "s", NULL
, offsetof(Seat
, id
), SD_BUS_VTABLE_PROPERTY_CONST
),
452 SD_BUS_PROPERTY("ActiveSession", "(so)", property_get_active_session
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
453 SD_BUS_PROPERTY("CanMultiSession", "b", property_get_const_true
, 0, SD_BUS_VTABLE_PROPERTY_CONST
|SD_BUS_VTABLE_HIDDEN
),
454 SD_BUS_PROPERTY("CanTTY", "b", property_get_can_tty
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
455 SD_BUS_PROPERTY("CanGraphical", "b", property_get_can_graphical
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
456 SD_BUS_PROPERTY("Sessions", "a(so)", property_get_sessions
, 0, 0),
457 SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
458 SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
459 SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
461 SD_BUS_METHOD("Terminate", NULL
, NULL
, bus_seat_method_terminate
, SD_BUS_VTABLE_UNPRIVILEGED
),
463 SD_BUS_METHOD_WITH_NAMES("ActivateSession",
465 SD_BUS_PARAM(session_id
),
467 method_activate_session
,
468 SD_BUS_VTABLE_UNPRIVILEGED
),
469 SD_BUS_METHOD_WITH_NAMES("SwitchTo",
474 SD_BUS_VTABLE_UNPRIVILEGED
),
476 SD_BUS_METHOD("SwitchToNext", NULL
, NULL
, method_switch_to_next
, SD_BUS_VTABLE_UNPRIVILEGED
),
477 SD_BUS_METHOD("SwitchToPrevious", NULL
, NULL
, method_switch_to_previous
, SD_BUS_VTABLE_UNPRIVILEGED
),
482 const BusObjectImplementation seat_object
= {
483 "/org/freedesktop/login1/seat",
484 "org.freedesktop.login1.Seat",
485 .fallback_vtables
= BUS_FALLBACK_VTABLES({seat_vtable
, seat_object_find
}),
486 .node_enumerator
= seat_node_enumerator
,