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
);