1 /* SPDX-License-Identifier: LGPL-2.1+ */
3 This file is part of systemd.
5 Copyright 2011 Lennart Poettering
11 #include "alloc-util.h"
12 #include "bus-common-errors.h"
13 #include "bus-label.h"
15 #include "logind-seat.h"
18 #include "user-util.h"
21 static BUS_DEFINE_PROPERTY_GET(property_get_can_multi_session
, "b", Seat
, seat_can_multi_session
);
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
= session_activate(session
);
186 return sd_bus_reply_method_return(message
, NULL
);
189 static int method_switch_to(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
197 r
= sd_bus_message_read(message
, "u", &to
);
204 r
= seat_switch_to(s
, to
);
208 return sd_bus_reply_method_return(message
, NULL
);
211 static int method_switch_to_next(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
218 r
= seat_switch_to_next(s
);
222 return sd_bus_reply_method_return(message
, NULL
);
225 static int method_switch_to_previous(sd_bus_message
*message
, void *userdata
, sd_bus_error
*error
) {
232 r
= seat_switch_to_previous(s
);
236 return sd_bus_reply_method_return(message
, NULL
);
239 const sd_bus_vtable seat_vtable
[] = {
240 SD_BUS_VTABLE_START(0),
242 SD_BUS_PROPERTY("Id", "s", NULL
, offsetof(Seat
, id
), SD_BUS_VTABLE_PROPERTY_CONST
),
243 SD_BUS_PROPERTY("ActiveSession", "(so)", property_get_active_session
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
244 SD_BUS_PROPERTY("CanMultiSession", "b", property_get_can_multi_session
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
245 SD_BUS_PROPERTY("CanTTY", "b", property_get_can_tty
, 0, SD_BUS_VTABLE_PROPERTY_CONST
),
246 SD_BUS_PROPERTY("CanGraphical", "b", property_get_can_graphical
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
247 SD_BUS_PROPERTY("Sessions", "a(so)", property_get_sessions
, 0, 0),
248 SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
249 SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
250 SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint
, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE
),
252 SD_BUS_METHOD("Terminate", NULL
, NULL
, bus_seat_method_terminate
, SD_BUS_VTABLE_UNPRIVILEGED
),
253 SD_BUS_METHOD("ActivateSession", "s", NULL
, method_activate_session
, SD_BUS_VTABLE_UNPRIVILEGED
),
254 SD_BUS_METHOD("SwitchTo", "u", NULL
, method_switch_to
, SD_BUS_VTABLE_UNPRIVILEGED
),
255 SD_BUS_METHOD("SwitchToNext", NULL
, NULL
, method_switch_to_next
, SD_BUS_VTABLE_UNPRIVILEGED
),
256 SD_BUS_METHOD("SwitchToPrevious", NULL
, NULL
, method_switch_to_previous
, SD_BUS_VTABLE_UNPRIVILEGED
),
261 int seat_object_find(sd_bus
*bus
, const char *path
, const char *interface
, void *userdata
, void **found
, sd_bus_error
*error
) {
262 Manager
*m
= userdata
;
272 if (streq(path
, "/org/freedesktop/login1/seat/self")) {
273 sd_bus_message
*message
;
275 message
= sd_bus_get_current_message(bus
);
279 r
= manager_get_seat_from_creds(m
, message
, NULL
, error
, &seat
);
283 _cleanup_free_
char *e
= NULL
;
286 p
= startswith(path
, "/org/freedesktop/login1/seat/");
290 e
= bus_label_unescape(p
);
294 seat
= hashmap_get(m
->seats
, e
);
303 char *seat_bus_path(Seat
*s
) {
304 _cleanup_free_
char *t
= NULL
;
308 t
= bus_label_escape(s
->id
);
312 return strappend("/org/freedesktop/login1/seat/", t
);
315 int seat_node_enumerator(sd_bus
*bus
, const char *path
, void *userdata
, char ***nodes
, sd_bus_error
*error
) {
316 _cleanup_strv_free_
char **l
= NULL
;
317 sd_bus_message
*message
;
318 Manager
*m
= userdata
;
327 HASHMAP_FOREACH(seat
, m
->seats
, i
) {
330 p
= seat_bus_path(seat
);
334 r
= strv_consume(&l
, p
);
339 message
= sd_bus_get_current_message(bus
);
341 _cleanup_(sd_bus_creds_unrefp
) sd_bus_creds
*creds
= NULL
;
345 r
= sd_bus_query_sender_creds(message
, SD_BUS_CREDS_SESSION
|SD_BUS_CREDS_AUGMENT
, &creds
);
347 r
= sd_bus_creds_get_session(creds
, &name
);
349 session
= hashmap_get(m
->sessions
, name
);
350 if (session
&& session
->seat
) {
351 r
= strv_extend(&l
, "/org/freedesktop/login1/seat/self");
359 *nodes
= TAKE_PTR(l
);
364 int seat_send_signal(Seat
*s
, bool new_seat
) {
365 _cleanup_free_
char *p
= NULL
;
369 p
= seat_bus_path(s
);
373 return sd_bus_emit_signal(
375 "/org/freedesktop/login1",
376 "org.freedesktop.login1.Manager",
377 new_seat
? "SeatNew" : "SeatRemoved",
381 int seat_send_changed(Seat
*s
, const char *properties
, ...) {
382 _cleanup_free_
char *p
= NULL
;
390 p
= seat_bus_path(s
);
394 l
= strv_from_stdarg_alloca(properties
);
396 return sd_bus_emit_properties_changed_strv(s
->manager
->bus
, p
, "org.freedesktop.login1.Seat", l
);