1 /*-*- Mode: C; c-basic-offset: 8 -*-*/
4 This file is part of systemd.
6 Copyright 2010 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 "dbus-manager.h"
29 #define INTROSPECTION_BEGIN \
30 DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \
32 " <interface name=\"org.freedesktop.systemd1.Manager\">" \
33 " <method name=\"GetUnit\">" \
34 " <arg name=\"name\" type=\"s\" direction=\"in\"/>" \
35 " <arg name=\"unit\" type=\"o\" direction=\"out\"/>" \
37 " <method name=\"LoadUnit\">" \
38 " <arg name=\"name\" type=\"s\" direction=\"in\"/>" \
39 " <arg name=\"unit\" type=\"o\" direction=\"out\"/>" \
41 " <method name=\"GetJob\">" \
42 " <arg name=\"id\" type=\"u\" direction=\"in\"/>" \
43 " <arg name=\"job\" type=\"o\" direction=\"out\"/>" \
45 " <method name=\"ClearJobs\"/>" \
46 " <method name=\"ListUnits\">" \
47 " <arg name=\"units\" type=\"a(sssssouso)\" direction=\"out\"/>" \
49 " <method name=\"ListJobs\">" \
50 " <arg name=\"jobs\" type=\"a(usssoo)\" direction=\"out\"/>" \
52 " <method name=\"Subscribe\"/>" \
53 " <method name=\"Unsubscribe\"/>" \
54 " <method name=\"Dump\"/>" \
55 " <method name=\"CreateSnapshot\">" \
56 " <arg name=\"name\" type=\"s\" direction=\"in\"/>" \
57 " <arg nane=\"cleanup\" type=\"b\" direction=\"in\"/>" \
58 " <arg name=\"unit\" type=\"o\" direction=\"out\"/>" \
60 " <method name=\"Reload\"/>" \
61 " <method name=\"Reexecute\"/>" \
62 " <method name=\"Exit\"/>" \
63 " <method name=\"SetEnvironment\">" \
64 " <arg name=\"names\" type=\"as\" direction=\"in\"/>" \
66 " <method name=\"UnsetEnvironment\">" \
67 " <arg name=\"names\" type=\"as\" direction=\"in\"/>" \
69 " <signal name=\"UnitNew\">" \
70 " <arg name=\"id\" type=\"s\"/>" \
71 " <arg name=\"unit\" type=\"o\"/>" \
73 " <signal name=\"UnitRemoved\">" \
74 " <arg name=\"id\" type=\"s\"/>" \
75 " <arg name=\"unit\" type=\"o\"/>" \
77 " <signal name=\"JobNew\">" \
78 " <arg name=\"id\" type=\"u\"/>" \
79 " <arg name=\"job\" type=\"o\"/>" \
81 " <signal name=\"JobRemoved\">" \
82 " <arg name=\"id\" type=\"u\"/>" \
83 " <arg name=\"job\" type=\"o\"/>" \
85 " <property name=\"Version\" type=\"s\" access=\"read\"/>" \
86 " <property name=\"RunningAs\" type=\"s\" access=\"read\"/>" \
87 " <property name=\"BootTimestamp\" type=\"t\" access=\"read\"/>" \
88 " <property name=\"LogLevel\" type=\"s\" access=\"read\"/>" \
89 " <property name=\"LogTarget\" type=\"s\" access=\"read\"/>" \
90 " <property name=\"NNames\" type=\"u\" access=\"read\"/>" \
91 " <property name=\"NJobs\" type=\"u\" access=\"read\"/>" \
92 " <property name=\"Environment\" type=\"as\" access=\"read\"/>" \
94 BUS_PROPERTIES_INTERFACE \
95 BUS_INTROSPECTABLE_INTERFACE
97 #define INTROSPECTION_END \
100 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_running_as
, manager_running_as
, ManagerRunningAs
);
102 static int bus_manager_append_log_target(Manager
*m
, DBusMessageIter
*i
, const char *property
, void *data
) {
109 t
= log_target_to_string(log_get_target());
111 if (!dbus_message_iter_append_basic(i
, DBUS_TYPE_STRING
, &t
))
117 static int bus_manager_append_log_level(Manager
*m
, DBusMessageIter
*i
, const char *property
, void *data
) {
124 t
= log_level_to_string(log_get_max_level());
126 if (!dbus_message_iter_append_basic(i
, DBUS_TYPE_STRING
, &t
))
132 static int bus_manager_append_n_names(Manager
*m
, DBusMessageIter
*i
, const char *property
, void *data
) {
139 u
= hashmap_size(m
->units
);
141 if (!dbus_message_iter_append_basic(i
, DBUS_TYPE_UINT32
, &u
))
147 static int bus_manager_append_n_jobs(Manager
*m
, DBusMessageIter
*i
, const char *property
, void *data
) {
154 u
= hashmap_size(m
->jobs
);
156 if (!dbus_message_iter_append_basic(i
, DBUS_TYPE_UINT32
, &u
))
162 static DBusHandlerResult
bus_manager_message_handler(DBusConnection
*connection
, DBusMessage
*message
, void *data
) {
165 const BusProperty properties
[] = {
166 { "org.freedesktop.systemd1.Manager", "Version", bus_property_append_string
, "s", PACKAGE_STRING
},
167 { "org.freedesktop.systemd1.Manager", "RunningAs", bus_manager_append_running_as
, "s", &m
->running_as
},
168 { "org.freedesktop.systemd1.Manager", "BootTimestamp", bus_property_append_uint64
, "t", &m
->boot_timestamp
},
169 { "org.freedesktop.systemd1.Manager", "LogLevel", bus_manager_append_log_level
, "s", NULL
},
170 { "org.freedesktop.systemd1.Manager", "LogTarget", bus_manager_append_log_target
, "s", NULL
},
171 { "org.freedesktop.systemd1.Manager", "NNames", bus_manager_append_n_names
, "u", NULL
},
172 { "org.freedesktop.systemd1.Manager", "NJobs", bus_manager_append_n_jobs
, "u", NULL
},
173 { "org.freedesktop.systemd1.Manager", "Environment", bus_property_append_strv
, "as", m
->environment
},
174 { NULL
, NULL
, NULL
, NULL
, NULL
}
179 DBusMessage
*reply
= NULL
;
186 dbus_error_init(&error
);
188 log_debug("Got D-Bus request: %s.%s() on %s",
189 dbus_message_get_interface(message
),
190 dbus_message_get_member(message
),
191 dbus_message_get_path(message
));
193 if (dbus_message_is_method_call(message
, "org.freedesktop.systemd1.Manager", "GetUnit")) {
197 if (!dbus_message_get_args(
200 DBUS_TYPE_STRING
, &name
,
202 return bus_send_error_reply(m
, message
, &error
, -EINVAL
);
204 if (!(u
= manager_get_unit(m
, name
)))
205 return bus_send_error_reply(m
, message
, NULL
, -ENOENT
);
207 if (!(reply
= dbus_message_new_method_return(message
)))
210 if (!(path
= unit_dbus_path(u
)))
213 if (!dbus_message_append_args(
215 DBUS_TYPE_OBJECT_PATH
, &path
,
219 } else if (dbus_message_is_method_call(message
, "org.freedesktop.systemd1.Manager", "LoadUnit")) {
223 if (!dbus_message_get_args(
226 DBUS_TYPE_STRING
, &name
,
228 return bus_send_error_reply(m
, message
, &error
, -EINVAL
);
230 if ((r
= manager_load_unit(m
, name
, NULL
, &u
)) < 0)
231 return bus_send_error_reply(m
, message
, NULL
, r
);
233 if (!(reply
= dbus_message_new_method_return(message
)))
236 if (!(path
= unit_dbus_path(u
)))
239 if (!dbus_message_append_args(
241 DBUS_TYPE_OBJECT_PATH
, &path
,
245 } else if (dbus_message_is_method_call(message
, "org.freedesktop.systemd1.Manager", "GetJob")) {
249 if (!dbus_message_get_args(
252 DBUS_TYPE_UINT32
, &id
,
254 return bus_send_error_reply(m
, message
, &error
, -EINVAL
);
256 if (!(j
= manager_get_job(m
, id
)))
257 return bus_send_error_reply(m
, message
, NULL
, -ENOENT
);
259 if (!(reply
= dbus_message_new_method_return(message
)))
262 if (!(path
= job_dbus_path(j
)))
265 if (!dbus_message_append_args(
267 DBUS_TYPE_OBJECT_PATH
, &path
,
271 } else if (dbus_message_is_method_call(message
, "org.freedesktop.systemd1.Manager", "ClearJobs")) {
273 manager_clear_jobs(m
);
275 if (!(reply
= dbus_message_new_method_return(message
)))
278 } else if (dbus_message_is_method_call(message
, "org.freedesktop.systemd1.Manager", "ListUnits")) {
279 DBusMessageIter iter
, sub
;
284 if (!(reply
= dbus_message_new_method_return(message
)))
287 dbus_message_iter_init_append(reply
, &iter
);
289 if (!dbus_message_iter_open_container(&iter
, DBUS_TYPE_ARRAY
, "(sssssouso)", &sub
))
292 HASHMAP_FOREACH_KEY(u
, k
, m
->units
, i
) {
293 char *u_path
, *j_path
;
294 const char *description
, *load_state
, *active_state
, *sub_state
, *job_type
;
295 DBusMessageIter sub2
;
301 if (!dbus_message_iter_open_container(&sub
, DBUS_TYPE_STRUCT
, NULL
, &sub2
))
304 description
= unit_description(u
);
305 load_state
= unit_load_state_to_string(u
->meta
.load_state
);
306 active_state
= unit_active_state_to_string(unit_active_state(u
));
307 sub_state
= unit_sub_state_to_string(u
);
309 if (!(u_path
= unit_dbus_path(u
)))
313 job_id
= (uint32_t) u
->meta
.job
->id
;
315 if (!(j_path
= job_dbus_path(u
->meta
.job
))) {
320 job_type
= job_type_to_string(u
->meta
.job
->type
);
327 if (!dbus_message_iter_append_basic(&sub2
, DBUS_TYPE_STRING
, &u
->meta
.id
) ||
328 !dbus_message_iter_append_basic(&sub2
, DBUS_TYPE_STRING
, &description
) ||
329 !dbus_message_iter_append_basic(&sub2
, DBUS_TYPE_STRING
, &load_state
) ||
330 !dbus_message_iter_append_basic(&sub2
, DBUS_TYPE_STRING
, &active_state
) ||
331 !dbus_message_iter_append_basic(&sub2
, DBUS_TYPE_STRING
, &sub_state
) ||
332 !dbus_message_iter_append_basic(&sub2
, DBUS_TYPE_OBJECT_PATH
, &u_path
) ||
333 !dbus_message_iter_append_basic(&sub2
, DBUS_TYPE_UINT32
, &job_id
) ||
334 !dbus_message_iter_append_basic(&sub2
, DBUS_TYPE_STRING
, &job_type
) ||
335 !dbus_message_iter_append_basic(&sub2
, DBUS_TYPE_OBJECT_PATH
, &j_path
)) {
346 if (!dbus_message_iter_close_container(&sub
, &sub2
))
350 if (!dbus_message_iter_close_container(&iter
, &sub
))
353 } else if (dbus_message_is_method_call(message
, "org.freedesktop.systemd1.Manager", "ListJobs")) {
354 DBusMessageIter iter
, sub
;
358 if (!(reply
= dbus_message_new_method_return(message
)))
361 dbus_message_iter_init_append(reply
, &iter
);
363 if (!dbus_message_iter_open_container(&iter
, DBUS_TYPE_ARRAY
, "(usssoo)", &sub
))
366 HASHMAP_FOREACH(j
, m
->jobs
, i
) {
367 char *u_path
, *j_path
;
368 const char *state
, *type
;
370 DBusMessageIter sub2
;
372 if (!dbus_message_iter_open_container(&sub
, DBUS_TYPE_STRUCT
, NULL
, &sub2
))
375 id
= (uint32_t) j
->id
;
376 state
= job_state_to_string(j
->state
);
377 type
= job_type_to_string(j
->type
);
379 if (!(j_path
= job_dbus_path(j
)))
382 if (!(u_path
= unit_dbus_path(j
->unit
))) {
387 if (!dbus_message_iter_append_basic(&sub2
, DBUS_TYPE_UINT32
, &id
) ||
388 !dbus_message_iter_append_basic(&sub2
, DBUS_TYPE_STRING
, &j
->unit
->meta
.id
) ||
389 !dbus_message_iter_append_basic(&sub2
, DBUS_TYPE_STRING
, &type
) ||
390 !dbus_message_iter_append_basic(&sub2
, DBUS_TYPE_STRING
, &state
) ||
391 !dbus_message_iter_append_basic(&sub2
, DBUS_TYPE_OBJECT_PATH
, &j_path
) ||
392 !dbus_message_iter_append_basic(&sub2
, DBUS_TYPE_OBJECT_PATH
, &u_path
)) {
401 if (!dbus_message_iter_close_container(&sub
, &sub2
))
405 if (!dbus_message_iter_close_container(&iter
, &sub
))
408 } else if (dbus_message_is_method_call(message
, "org.freedesktop.systemd1.Manager", "Subscribe")) {
411 if (!(client
= strdup(dbus_message_get_sender(message
))))
414 r
= set_put(m
->subscribed
, client
);
417 return bus_send_error_reply(m
, message
, NULL
, r
);
419 if (!(reply
= dbus_message_new_method_return(message
)))
422 } else if (dbus_message_is_method_call(message
, "org.freedesktop.systemd1.Manager", "Unsubscribe")) {
425 if (!(client
= set_remove(m
->subscribed
, (char*) dbus_message_get_sender(message
))))
426 return bus_send_error_reply(m
, message
, NULL
, -ENOENT
);
430 if (!(reply
= dbus_message_new_method_return(message
)))
433 } else if (dbus_message_is_method_call(message
, "org.freedesktop.systemd1.Manager", "Dump")) {
438 if (!(reply
= dbus_message_new_method_return(message
)))
441 if (!(f
= open_memstream(&dump
, &size
)))
444 manager_dump_units(m
, f
, NULL
);
445 manager_dump_jobs(m
, f
, NULL
);
455 if (!dbus_message_append_args(reply
, DBUS_TYPE_STRING
, &dump
, DBUS_TYPE_INVALID
)) {
461 } else if (dbus_message_is_method_call(message
, "org.freedesktop.systemd1.Manager", "CreateSnapshot")) {
466 if (!dbus_message_get_args(
469 DBUS_TYPE_STRING
, &name
,
470 DBUS_TYPE_BOOLEAN
, &cleanup
,
472 return bus_send_error_reply(m
, message
, &error
, -EINVAL
);
474 if (name
&& name
[0] == 0)
477 if ((r
= snapshot_create(m
, name
, cleanup
, &s
)) < 0)
478 return bus_send_error_reply(m
, message
, NULL
, r
);
480 if (!(reply
= dbus_message_new_method_return(message
)))
483 if (!(path
= unit_dbus_path(UNIT(s
))))
486 if (!dbus_message_append_args(
488 DBUS_TYPE_OBJECT_PATH
, &path
,
492 } else if (dbus_message_is_method_call(message
, "org.freedesktop.DBus.Introspectable", "Introspect")) {
493 char *introspection
= NULL
;
501 if (!(reply
= dbus_message_new_method_return(message
)))
504 /* We roll our own introspection code here, instead of
505 * relying on bus_default_message_handler() because we
506 * need to generate our introspection string
509 if (!(f
= open_memstream(&introspection
, &size
)))
512 fputs(INTROSPECTION_BEGIN
, f
);
514 HASHMAP_FOREACH_KEY(u
, k
, m
->units
, i
) {
520 if (!(p
= bus_path_escape(k
))) {
526 fprintf(f
, "<node name=\"unit/%s\"/>", p
);
530 HASHMAP_FOREACH(j
, m
->jobs
, i
)
531 fprintf(f
, "<node name=\"job/%lu\"/>", (unsigned long) j
->id
);
533 fputs(INTROSPECTION_END
, f
);
546 if (!dbus_message_append_args(reply
, DBUS_TYPE_STRING
, &introspection
, DBUS_TYPE_INVALID
)) {
553 } else if (dbus_message_is_method_call(message
, "org.freedesktop.systemd1.Manager", "Reload")) {
555 assert(!m
->queued_message
);
557 /* Instead of sending the reply back right away, we
558 * just remember that we need to and then send it
559 * after the reload is finished. That way the caller
560 * knows when the reload finished. */
562 if (!(m
->queued_message
= dbus_message_new_method_return(message
)))
565 m
->exit_code
= MANAGER_RELOAD
;
567 } else if (dbus_message_is_method_call(message
, "org.freedesktop.systemd1.Manager", "Reexecute")) {
569 if (!(reply
= dbus_message_new_method_return(message
)))
572 m
->exit_code
= MANAGER_REEXECUTE
;
574 } else if (dbus_message_is_method_call(message
, "org.freedesktop.systemd1.Manager", "Exit")) {
576 if (m
->running_as
== MANAGER_INIT
)
577 return bus_send_error_reply(m
, message
, NULL
, -ENOTSUP
);
579 if (!(reply
= dbus_message_new_method_return(message
)))
582 m
->exit_code
= MANAGER_EXIT
;
584 } else if (dbus_message_is_method_call(message
, "org.freedesktop.systemd1.Manager", "SetEnvironment")) {
585 char **l
= NULL
, **e
= NULL
;
587 if ((r
= bus_parse_strv(message
, &l
)) < 0) {
591 return bus_send_error_reply(m
, message
, NULL
, r
);
594 e
= strv_env_merge(m
->environment
, l
, NULL
);
600 if (!(reply
= dbus_message_new_method_return(message
))) {
605 strv_free(m
->environment
);
608 } else if (dbus_message_is_method_call(message
, "org.freedesktop.systemd1.Manager", "UnsetEnvironment")) {
609 char **l
= NULL
, **e
= NULL
;
611 if ((r
= bus_parse_strv(message
, &l
)) < 0) {
615 return bus_send_error_reply(m
, message
, NULL
, r
);
618 e
= strv_env_delete(m
->environment
, l
, NULL
);
624 if (!(reply
= dbus_message_new_method_return(message
)))
627 strv_free(m
->environment
);
631 return bus_default_message_handler(m
, message
, NULL
, properties
);
636 if (!dbus_connection_send(connection
, reply
, NULL
))
639 dbus_message_unref(reply
);
642 return DBUS_HANDLER_RESULT_HANDLED
;
648 dbus_message_unref(reply
);
650 dbus_error_free(&error
);
652 return DBUS_HANDLER_RESULT_NEED_MEMORY
;
655 const DBusObjectPathVTable bus_manager_vtable
= {
656 .message_function
= bus_manager_message_handler