387 lines
10 KiB
C
387 lines
10 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2011 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <errno.h>
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#include <string.h>
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#include "util.h"
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#include "bus-util.h"
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#include "strv.h"
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#include "bus-errors.h"
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#include "logind.h"
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#include "logind-seat.h"
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static int property_get_active_session(
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sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *error) {
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_cleanup_free_ char *p = NULL;
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Seat *s = userdata;
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assert(bus);
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assert(reply);
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assert(s);
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p = s->active ? session_bus_path(s->active) : strdup("/");
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if (!p)
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return -ENOMEM;
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return sd_bus_message_append(reply, "(so)", s->active ? s->active->id : "", p);
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}
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static int property_get_can_multi_session(
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sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *error) {
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Seat *s = userdata;
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assert(bus);
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assert(reply);
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assert(s);
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return sd_bus_message_append(reply, "b", seat_can_multi_session(s));
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}
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static int property_get_can_tty(
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sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *error) {
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Seat *s = userdata;
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assert(bus);
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assert(reply);
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assert(s);
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return sd_bus_message_append(reply, "b", seat_can_tty(s));
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}
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static int property_get_can_graphical(
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sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *error) {
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Seat *s = userdata;
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assert(bus);
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assert(reply);
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assert(s);
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return sd_bus_message_append(reply, "b", seat_can_tty(s));
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}
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static int property_get_sessions(
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sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *error) {
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Seat *s = userdata;
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Session *session;
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int r;
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assert(bus);
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assert(reply);
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assert(s);
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r = sd_bus_message_open_container(reply, 'a', "(so)");
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if (r < 0)
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return r;
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LIST_FOREACH(sessions_by_seat, session, s->sessions) {
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_cleanup_free_ char *p = NULL;
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p = session_bus_path(session);
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if (!p)
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return -ENOMEM;
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r = sd_bus_message_append(reply, "(so)", session->id, p);
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if (r < 0)
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return r;
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}
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r = sd_bus_message_close_container(reply);
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if (r < 0)
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return r;
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return 1;
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}
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static int property_get_idle_hint(
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sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *error) {
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Seat *s = userdata;
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assert(bus);
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assert(reply);
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assert(s);
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return sd_bus_message_append(reply, "b", seat_get_idle_hint(s, NULL) > 0);
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}
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static int property_get_idle_since_hint(
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sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *error) {
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Seat *s = userdata;
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dual_timestamp t;
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uint64_t u;
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int r;
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assert(bus);
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assert(reply);
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assert(s);
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r = seat_get_idle_hint(s, &t);
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if (r < 0)
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return r;
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u = streq(property, "IdleSinceHint") ? t.realtime : t.monotonic;
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return sd_bus_message_append(reply, "t", u);
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}
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static int method_terminate(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
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Seat *s = userdata;
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int r;
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assert(bus);
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assert(message);
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assert(s);
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r = seat_stop_sessions(s);
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if (r < 0)
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return r;
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return sd_bus_reply_method_return(message, NULL);
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}
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static int method_activate_session(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
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Seat *s = userdata;
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const char *name;
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Session *session;
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int r;
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assert(bus);
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assert(message);
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assert(s);
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r = sd_bus_message_read(message, "s", &name);
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if (r < 0)
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return r;
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session = hashmap_get(s->manager->sessions, name);
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if (!session)
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return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SESSION, "No session '%s' known", name);
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if (session->seat != s)
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return sd_bus_error_setf(error, BUS_ERROR_SESSION_NOT_ON_SEAT, "Session %s not on seat %s", name, s->id);
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r = session_activate(session);
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if (r < 0)
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return r;
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return sd_bus_reply_method_return(message, NULL);
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}
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const sd_bus_vtable seat_vtable[] = {
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SD_BUS_VTABLE_START(0),
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SD_BUS_PROPERTY("Id", "s", NULL, offsetof(Seat, id), 0),
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SD_BUS_PROPERTY("ActiveSession", "(so)", property_get_active_session, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
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SD_BUS_PROPERTY("CanMultiSession", "b", property_get_can_multi_session, 0, 0),
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SD_BUS_PROPERTY("CanTTY", "b", property_get_can_tty, 0, 0),
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SD_BUS_PROPERTY("CanGraphical", "b", property_get_can_graphical, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
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SD_BUS_PROPERTY("Sessions", "a(so)", property_get_sessions, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
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SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
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SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
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SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
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SD_BUS_METHOD("Terminate", NULL, NULL, method_terminate, 0),
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SD_BUS_METHOD("ActivateSession", "s", NULL, method_activate_session, 0),
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SD_BUS_VTABLE_END
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};
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int seat_object_find(sd_bus *bus, const char *path, const char *interface, void **found, void *userdata) {
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Manager *m = userdata;
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Seat *seat;
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int r;
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assert(bus);
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assert(path);
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assert(interface);
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assert(found);
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assert(m);
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if (streq(path, "/org/freedesktop/login1/seat/self")) {
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sd_bus_message *message;
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Session *session;
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pid_t pid;
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message = sd_bus_get_current(bus);
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if (!message)
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return 0;
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r = sd_bus_get_owner_pid(bus, sd_bus_message_get_sender(message), &pid);
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if (r < 0)
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return 0;
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r = manager_get_session_by_pid(m, pid, &session);
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if (r <= 0)
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return 0;
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if (!session->seat)
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return 0;
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seat = session->seat;
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} else {
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_cleanup_free_ char *e = NULL;
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const char *p;
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p = startswith(path, "/org/freedesktop/login1/seat/");
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if (!p)
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return 0;
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e = sd_bus_label_unescape(p);
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if (!e)
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return -ENOMEM;
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seat = hashmap_get(m->seats, e);
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if (!seat)
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return 0;
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}
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*found = seat;
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return 1;
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}
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char *seat_bus_path(Seat *s) {
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_cleanup_free_ char *t = NULL;
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assert(s);
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t = sd_bus_label_escape(s->id);
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if (!t)
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return NULL;
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return strappend("/org/freedesktop/login1/seat/", t);
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}
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int seat_node_enumerator(sd_bus *bus, const char *path, char ***nodes, void *userdata) {
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_cleanup_strv_free_ char **l = NULL;
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Manager *m = userdata;
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Seat *seat;
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Iterator i;
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int r;
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assert(bus);
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assert(path);
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assert(nodes);
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HASHMAP_FOREACH(seat, m->seats, i) {
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char *p;
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p = seat_bus_path(seat);
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if (!p)
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return -ENOMEM;
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r = strv_push(&l, p);
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if (r < 0) {
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free(p);
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return r;
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}
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}
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*nodes = l;
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l = NULL;
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return 1;
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}
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int seat_send_signal(Seat *s, bool new_seat) {
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_cleanup_free_ char *p = NULL;
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assert(s);
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p = seat_bus_path(s);
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if (!p)
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return -ENOMEM;
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return sd_bus_emit_signal(
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s->manager->bus,
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"/org/freedesktop/login1",
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"org.freedesktop.login1.Manager",
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new_seat ? "SeatNew" : "SeatRemoved",
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"so", s->id, p);
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}
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int seat_send_changed(Seat *s, const char *properties, ...) {
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_cleanup_free_ char *p = NULL;
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char **l;
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assert(s);
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if (!s->started)
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return 0;
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p = seat_bus_path(s);
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if (!p)
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return -ENOMEM;
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l = strv_from_stdarg_alloca(properties);
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return sd_bus_emit_properties_changed_strv(s->manager->bus, p, "org.freedesktop.login1.Seat", l);
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}
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