1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2011 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
26 #include "logind-session.h"
27 #include "dbus-common.h"
30 #define BUS_SESSION_INTERFACE \
31 " <interface name=\"org.freedesktop.login1.Session\">\n" \
32 " <method name=\"Terminate\"/>\n" \
33 " <method name=\"Activate\"/>\n" \
34 " <method name=\"Lock\"/>\n" \
35 " <method name=\"Unlock\"/>\n" \
36 " <method name=\"SetIdleHint\">\n" \
37 " <arg name=\"b\" type=\"b\"/>\n" \
39 " <method name=\"Kill\">\n" \
40 " <arg name=\"who\" type=\"s\"/>\n" \
41 " <arg name=\"signal\" type=\"s\"/>\n" \
43 " <property name=\"Id\" type=\"s\" access=\"read\"/>\n" \
44 " <property name=\"User\" type=\"(uo)\" access=\"read\"/>\n" \
45 " <property name=\"Name\" type=\"s\" access=\"read\"/>\n" \
46 " <property name=\"Timestamp\" type=\"t\" access=\"read\"/>\n" \
47 " <property name=\"TimestampMonotonic\" type=\"t\" access=\"read\"/>\n" \
48 " <property name=\"ControlGroupPath\" type=\"s\" access=\"read\"/>\n" \
49 " <property name=\"VTNr\" type=\"u\" access=\"read\"/>\n" \
50 " <property name=\"Seat\" type=\"(so)\" access=\"read\"/>\n" \
51 " <property name=\"TTY\" type=\"s\" access=\"read\"/>\n" \
52 " <property name=\"Display\" type=\"s\" access=\"read\"/>\n" \
53 " <property name=\"Remote\" type=\"b\" access=\"read\"/>\n" \
54 " <property name=\"RemoteHost\" type=\"s\" access=\"read\"/>\n" \
55 " <property name=\"RemoteUser\" type=\"s\" access=\"read\"/>\n" \
56 " <property name=\"Service\" type=\"s\" access=\"read\"/>\n" \
57 " <property name=\"Leader\" type=\"u\" access=\"read\"/>\n" \
58 " <property name=\"Audit\" type=\"u\" access=\"read\"/>\n" \
59 " <property name=\"Type\" type=\"s\" access=\"read\"/>\n" \
60 " <property name=\"Active\" type=\"b\" access=\"read\"/>\n" \
61 " <property name=\"Controllers\" type=\"as\" access=\"read\"/>\n" \
62 " <property name=\"ResetControllers\" type=\"as\" access=\"read\"/>\n" \
63 " <property name=\"KillProcesses\" type=\"b\" access=\"read\"/>\n" \
64 " <property name=\"IdleHint\" type=\"b\" access=\"read\"/>\n" \
65 " <property name=\"IdleSinceHint\" type=\"t\" access=\"read\"/>\n" \
66 " <property name=\"IdleSinceHintMonotonic\" type=\"t\" access=\"read\"/>\n" \
69 #define INTROSPECTION \
70 DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \
72 BUS_SESSION_INTERFACE \
73 BUS_PROPERTIES_INTERFACE \
75 BUS_INTROSPECTABLE_INTERFACE \
78 #define INTERFACES_LIST \
79 BUS_GENERIC_INTERFACES_LIST \
80 "org.freedesktop.login1.Session\0"
82 static int bus_session_append_seat(DBusMessageIter *i, const char *property, void *data) {
85 const char *id, *path;
92 if (!dbus_message_iter_open_container(i, DBUS_TYPE_STRUCT, NULL, &sub))
97 path = p = seat_bus_path(s->seat);
106 if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &id) ||
107 !dbus_message_iter_append_basic(&sub, DBUS_TYPE_OBJECT_PATH, &path)) {
114 if (!dbus_message_iter_close_container(i, &sub))
120 static int bus_session_append_user(DBusMessageIter *i, const char *property, void *data) {
129 if (!dbus_message_iter_open_container(i, DBUS_TYPE_STRUCT, NULL, &sub))
132 p = user_bus_path(s->user);
136 if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_UINT32, &s->user->uid) ||
137 !dbus_message_iter_append_basic(&sub, DBUS_TYPE_OBJECT_PATH, &p)) {
144 if (!dbus_message_iter_close_container(i, &sub))
150 static int bus_session_append_active(DBusMessageIter *i, const char *property, void *data) {
158 b = session_is_active(s);
159 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b))
165 static int bus_session_append_idle_hint(DBusMessageIter *i, const char *property, void *data) {
173 b = session_get_idle_hint(s, NULL) > 0;
174 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b))
180 static int bus_session_append_idle_hint_since(DBusMessageIter *i, const char *property, void *data) {
189 session_get_idle_hint(s, &t);
190 u = streq(property, "IdleSinceHint") ? t.realtime : t.monotonic;
192 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT64, &u))
198 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_session_append_type, session_type, SessionType);
200 static int get_session_for_path(Manager *m, const char *path, Session **_s) {
208 if (!startswith(path, "/org/freedesktop/login1/session/"))
211 id = bus_path_unescape(path + 32);
215 s = hashmap_get(m->sessions, id);
225 static DBusHandlerResult session_message_dispatch(
227 DBusConnection *connection,
228 DBusMessage *message) {
230 const BusProperty properties[] = {
231 { "org.freedesktop.login1.Session", "Id", bus_property_append_string, "s", s->id },
232 { "org.freedesktop.login1.Session", "User", bus_session_append_user, "(uo)", s },
233 { "org.freedesktop.login1.Session", "Name", bus_property_append_string, "s", s->user->name },
234 { "org.freedesktop.login1.Session", "Timestamp", bus_property_append_usec, "t", &s->timestamp.realtime },
235 { "org.freedesktop.login1.Session", "TimestampMonotonic", bus_property_append_usec, "t", &s->timestamp.monotonic },
236 { "org.freedesktop.login1.Session", "ControlGroupPath", bus_property_append_string, "s", s->cgroup_path },
237 { "org.freedesktop.login1.Session", "VTNr", bus_property_append_uint32, "u", &s->vtnr },
238 { "org.freedesktop.login1.Session", "Seat", bus_session_append_seat, "(so)", s },
239 { "org.freedesktop.login1.Session", "TTY", bus_property_append_string, "s", s->tty },
240 { "org.freedesktop.login1.Session", "Display", bus_property_append_string, "s", s->display },
241 { "org.freedesktop.login1.Session", "Remote", bus_property_append_bool, "b", &s->remote },
242 { "org.freedesktop.login1.Session", "RemoteUser", bus_property_append_string, "s", s->remote_user },
243 { "org.freedesktop.login1.Session", "RemoteHost", bus_property_append_string, "s", s->remote_host },
244 { "org.freedesktop.login1.Session", "Service", bus_property_append_string, "s", s->service },
245 { "org.freedesktop.login1.Session", "Leader", bus_property_append_pid, "u", &s->leader },
246 { "org.freedesktop.login1.Session", "Audit", bus_property_append_uint32, "u", &s->audit_id },
247 { "org.freedesktop.login1.Session", "Type", bus_session_append_type, "s", &s->type },
248 { "org.freedesktop.login1.Session", "Active", bus_session_append_active, "b", s },
249 { "org.freedesktop.login1.Session", "Controllers", bus_property_append_strv, "as", s->controllers },
250 { "org.freedesktop.login1.Session", "ResetControllers", bus_property_append_strv, "as", s->reset_controllers },
251 { "org.freedesktop.login1.Session", "KillProcesses", bus_property_append_bool, "b", &s->kill_processes },
252 { "org.freedesktop.login1.Session", "IdleHint", bus_session_append_idle_hint, "b", s },
253 { "org.freedesktop.login1.Session", "IdleSinceHint", bus_session_append_idle_hint_since, "t", s },
254 { "org.freedesktop.login1.Session", "IdleSinceHintMonotonic", bus_session_append_idle_hint_since, "t", s },
255 { NULL, NULL, NULL, NULL, NULL }
259 DBusMessage *reply = NULL;
266 dbus_error_init(&error);
268 if (dbus_message_is_method_call(message, "org.freedesktop.login1.Session", "Terminate")) {
272 return bus_send_error_reply(connection, message, NULL, r);
274 reply = dbus_message_new_method_return(message);
278 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Session", "Activate")) {
280 r = session_activate(s);
282 return bus_send_error_reply(connection, message, NULL, r);
284 reply = dbus_message_new_method_return(message);
288 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Session", "Lock") ||
289 dbus_message_is_method_call(message, "org.freedesktop.login1.Session", "Unlock")) {
291 if (session_send_signal(s, streq(dbus_message_get_member(message), "Lock")) < 0)
294 reply = dbus_message_new_method_return(message);
298 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Session", "SetIdleHint")) {
302 if (!dbus_message_get_args(
305 DBUS_TYPE_BOOLEAN, &b,
307 return bus_send_error_reply(connection, message, &error, -EINVAL);
309 ul = dbus_bus_get_unix_user(connection, dbus_message_get_sender(message), &error);
310 if (ul == (unsigned long) -1)
311 return bus_send_error_reply(connection, message, &error, -EIO);
313 if (ul != 0 && ul != s->user->uid)
314 return bus_send_error_reply(connection, message, NULL, -EPERM);
316 session_set_idle_hint(s, b);
318 reply = dbus_message_new_method_return(message);
322 } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Session", "Kill")) {
327 if (!dbus_message_get_args(
330 DBUS_TYPE_STRING, &swho,
331 DBUS_TYPE_INT32, &signo,
333 return bus_send_error_reply(connection, message, &error, -EINVAL);
338 who = kill_who_from_string(swho);
340 return bus_send_error_reply(connection, message, &error, -EINVAL);
343 if (signo <= 0 || signo >= _NSIG)
344 return bus_send_error_reply(connection, message, &error, -EINVAL);
346 r = session_kill(s, who, signo);
348 return bus_send_error_reply(connection, message, NULL, r);
350 reply = dbus_message_new_method_return(message);
355 return bus_default_message_handler(connection, message, INTROSPECTION, INTERFACES_LIST, properties);
358 if (!dbus_connection_send(connection, reply, NULL))
361 dbus_message_unref(reply);
364 return DBUS_HANDLER_RESULT_HANDLED;
368 dbus_message_unref(reply);
370 dbus_error_free(&error);
372 return DBUS_HANDLER_RESULT_NEED_MEMORY;
375 static DBusHandlerResult session_message_handler(
376 DBusConnection *connection,
377 DBusMessage *message,
380 Manager *m = userdata;
384 r = get_session_for_path(m, dbus_message_get_path(message), &s);
388 return DBUS_HANDLER_RESULT_NEED_MEMORY;
394 dbus_set_error_const(&e, DBUS_ERROR_UNKNOWN_OBJECT, "Unknown session");
395 return bus_send_error_reply(connection, message, &e, r);
398 return bus_send_error_reply(connection, message, NULL, r);
401 return session_message_dispatch(s, connection, message);
404 const DBusObjectPathVTable bus_session_vtable = {
405 .message_function = session_message_handler
408 char *session_bus_path(Session *s) {
413 t = bus_path_escape(s->id);
417 r = strappend("/org/freedesktop/login1/session/", t);
423 int session_send_signal(Session *s, bool new_session) {
430 m = dbus_message_new_signal("/org/freedesktop/login1",
431 "org.freedesktop.login1.Manager",
432 new_session ? "SessionNew" : "SessionRemoved");
437 p = session_bus_path(s);
441 if (!dbus_message_append_args(
443 DBUS_TYPE_STRING, &s->id,
444 DBUS_TYPE_OBJECT_PATH, &p,
448 if (!dbus_connection_send(s->manager->bus, m, NULL))
454 dbus_message_unref(m);
460 int session_send_changed(Session *s, const char *properties) {
470 p = session_bus_path(s);
474 m = bus_properties_changed_new(p, "org.freedesktop.login1.Session", properties);
478 if (!dbus_connection_send(s->manager->bus, m, NULL))
485 dbus_message_unref(m);
491 int session_send_lock(Session *s, bool lock) {
498 p = session_bus_path(s);
502 m = dbus_message_new_signal(p, "org.freedesktop.login1.Session", lock ? "Lock" : "Unlock");
508 b = dbus_connection_send(s->manager->bus, m, NULL);
509 dbus_message_unref(m);