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\"/>" \
84 " <arg name=\"success\" type=\"b\"/>" \
86 " <property name=\"Version\" type=\"s\" access=\"read\"/>" \
87 " <property name=\"RunningAs\" type=\"s\" access=\"read\"/>" \
88 " <property name=\"BootTimestamp\" type=\"t\" access=\"read\"/>" \
89 " <property name=\"LogLevel\" type=\"s\" access=\"read\"/>" \
90 " <property name=\"LogTarget\" type=\"s\" access=\"read\"/>" \
91 " <property name=\"NNames\" type=\"u\" access=\"read\"/>" \
92 " <property name=\"NJobs\" type=\"u\" access=\"read\"/>" \
93 " <property name=\"Environment\" type=\"as\" access=\"read\"/>" \
95 BUS_PROPERTIES_INTERFACE \
96 BUS_INTROSPECTABLE_INTERFACE
98 #define INTROSPECTION_END \
101 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_running_as, manager_running_as, ManagerRunningAs);
103 static int bus_manager_append_log_target(Manager *m, DBusMessageIter *i, const char *property, void *data) {
110 t = log_target_to_string(log_get_target());
112 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
118 static int bus_manager_append_log_level(Manager *m, DBusMessageIter *i, const char *property, void *data) {
125 t = log_level_to_string(log_get_max_level());
127 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
133 static int bus_manager_append_n_names(Manager *m, DBusMessageIter *i, const char *property, void *data) {
140 u = hashmap_size(m->units);
142 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u))
148 static int bus_manager_append_n_jobs(Manager *m, DBusMessageIter *i, const char *property, void *data) {
155 u = hashmap_size(m->jobs);
157 if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT32, &u))
163 static DBusHandlerResult bus_manager_message_handler(DBusConnection *connection, DBusMessage *message, void *data) {
166 const BusProperty properties[] = {
167 { "org.freedesktop.systemd1.Manager", "Version", bus_property_append_string, "s", PACKAGE_STRING },
168 { "org.freedesktop.systemd1.Manager", "RunningAs", bus_manager_append_running_as, "s", &m->running_as },
169 { "org.freedesktop.systemd1.Manager", "BootTimestamp", bus_property_append_uint64, "t", &m->boot_timestamp },
170 { "org.freedesktop.systemd1.Manager", "LogLevel", bus_manager_append_log_level, "s", NULL },
171 { "org.freedesktop.systemd1.Manager", "LogTarget", bus_manager_append_log_target, "s", NULL },
172 { "org.freedesktop.systemd1.Manager", "NNames", bus_manager_append_n_names, "u", NULL },
173 { "org.freedesktop.systemd1.Manager", "NJobs", bus_manager_append_n_jobs, "u", NULL },
174 { "org.freedesktop.systemd1.Manager", "Environment", bus_property_append_strv, "as", m->environment },
175 { NULL, NULL, NULL, NULL, NULL }
180 DBusMessage *reply = NULL;
187 dbus_error_init(&error);
189 log_debug("Got D-Bus request: %s.%s() on %s",
190 dbus_message_get_interface(message),
191 dbus_message_get_member(message),
192 dbus_message_get_path(message));
194 if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnit")) {
198 if (!dbus_message_get_args(
201 DBUS_TYPE_STRING, &name,
203 return bus_send_error_reply(m, message, &error, -EINVAL);
205 if (!(u = manager_get_unit(m, name)))
206 return bus_send_error_reply(m, message, NULL, -ENOENT);
208 if (!(reply = dbus_message_new_method_return(message)))
211 if (!(path = unit_dbus_path(u)))
214 if (!dbus_message_append_args(
216 DBUS_TYPE_OBJECT_PATH, &path,
220 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "LoadUnit")) {
224 if (!dbus_message_get_args(
227 DBUS_TYPE_STRING, &name,
229 return bus_send_error_reply(m, message, &error, -EINVAL);
231 if ((r = manager_load_unit(m, name, NULL, &u)) < 0)
232 return bus_send_error_reply(m, message, NULL, r);
234 if (!(reply = dbus_message_new_method_return(message)))
237 if (!(path = unit_dbus_path(u)))
240 if (!dbus_message_append_args(
242 DBUS_TYPE_OBJECT_PATH, &path,
246 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetJob")) {
250 if (!dbus_message_get_args(
253 DBUS_TYPE_UINT32, &id,
255 return bus_send_error_reply(m, message, &error, -EINVAL);
257 if (!(j = manager_get_job(m, id)))
258 return bus_send_error_reply(m, message, NULL, -ENOENT);
260 if (!(reply = dbus_message_new_method_return(message)))
263 if (!(path = job_dbus_path(j)))
266 if (!dbus_message_append_args(
268 DBUS_TYPE_OBJECT_PATH, &path,
272 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ClearJobs")) {
274 manager_clear_jobs(m);
276 if (!(reply = dbus_message_new_method_return(message)))
279 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListUnits")) {
280 DBusMessageIter iter, sub;
285 if (!(reply = dbus_message_new_method_return(message)))
288 dbus_message_iter_init_append(reply, &iter);
290 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(sssssouso)", &sub))
293 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
294 char *u_path, *j_path;
295 const char *description, *load_state, *active_state, *sub_state, *job_type;
296 DBusMessageIter sub2;
302 if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
305 description = unit_description(u);
306 load_state = unit_load_state_to_string(u->meta.load_state);
307 active_state = unit_active_state_to_string(unit_active_state(u));
308 sub_state = unit_sub_state_to_string(u);
310 if (!(u_path = unit_dbus_path(u)))
314 job_id = (uint32_t) u->meta.job->id;
316 if (!(j_path = job_dbus_path(u->meta.job))) {
321 job_type = job_type_to_string(u->meta.job->type);
328 if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &u->meta.id) ||
329 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &description) ||
330 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &load_state) ||
331 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &active_state) ||
332 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sub_state) ||
333 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path) ||
334 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &job_id) ||
335 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &job_type) ||
336 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path)) {
347 if (!dbus_message_iter_close_container(&sub, &sub2))
351 if (!dbus_message_iter_close_container(&iter, &sub))
354 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListJobs")) {
355 DBusMessageIter iter, sub;
359 if (!(reply = dbus_message_new_method_return(message)))
362 dbus_message_iter_init_append(reply, &iter);
364 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(usssoo)", &sub))
367 HASHMAP_FOREACH(j, m->jobs, i) {
368 char *u_path, *j_path;
369 const char *state, *type;
371 DBusMessageIter sub2;
373 if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
376 id = (uint32_t) j->id;
377 state = job_state_to_string(j->state);
378 type = job_type_to_string(j->type);
380 if (!(j_path = job_dbus_path(j)))
383 if (!(u_path = unit_dbus_path(j->unit))) {
388 if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &id) ||
389 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &j->unit->meta.id) ||
390 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &type) ||
391 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &state) ||
392 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path) ||
393 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path)) {
402 if (!dbus_message_iter_close_container(&sub, &sub2))
406 if (!dbus_message_iter_close_container(&iter, &sub))
409 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Subscribe")) {
412 if (!(client = strdup(dbus_message_get_sender(message))))
415 r = set_put(m->subscribed, client);
418 return bus_send_error_reply(m, message, NULL, r);
420 if (!(reply = dbus_message_new_method_return(message)))
423 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Unsubscribe")) {
426 if (!(client = set_remove(m->subscribed, (char*) dbus_message_get_sender(message))))
427 return bus_send_error_reply(m, message, NULL, -ENOENT);
431 if (!(reply = dbus_message_new_method_return(message)))
434 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Dump")) {
439 if (!(reply = dbus_message_new_method_return(message)))
442 if (!(f = open_memstream(&dump, &size)))
445 manager_dump_units(m, f, NULL);
446 manager_dump_jobs(m, f, NULL);
456 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &dump, DBUS_TYPE_INVALID)) {
462 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "CreateSnapshot")) {
467 if (!dbus_message_get_args(
470 DBUS_TYPE_STRING, &name,
471 DBUS_TYPE_BOOLEAN, &cleanup,
473 return bus_send_error_reply(m, message, &error, -EINVAL);
475 if (name && name[0] == 0)
478 if ((r = snapshot_create(m, name, cleanup, &s)) < 0)
479 return bus_send_error_reply(m, message, NULL, r);
481 if (!(reply = dbus_message_new_method_return(message)))
484 if (!(path = unit_dbus_path(UNIT(s))))
487 if (!dbus_message_append_args(
489 DBUS_TYPE_OBJECT_PATH, &path,
493 } else if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) {
494 char *introspection = NULL;
502 if (!(reply = dbus_message_new_method_return(message)))
505 /* We roll our own introspection code here, instead of
506 * relying on bus_default_message_handler() because we
507 * need to generate our introspection string
510 if (!(f = open_memstream(&introspection, &size)))
513 fputs(INTROSPECTION_BEGIN, f);
515 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
521 if (!(p = bus_path_escape(k))) {
527 fprintf(f, "<node name=\"unit/%s\"/>", p);
531 HASHMAP_FOREACH(j, m->jobs, i)
532 fprintf(f, "<node name=\"job/%lu\"/>", (unsigned long) j->id);
534 fputs(INTROSPECTION_END, f);
547 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &introspection, DBUS_TYPE_INVALID)) {
554 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reload")) {
556 assert(!m->queued_message);
558 /* Instead of sending the reply back right away, we
559 * just remember that we need to and then send it
560 * after the reload is finished. That way the caller
561 * knows when the reload finished. */
563 if (!(m->queued_message = dbus_message_new_method_return(message)))
566 m->exit_code = MANAGER_RELOAD;
568 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reexecute")) {
570 if (!(reply = dbus_message_new_method_return(message)))
573 m->exit_code = MANAGER_REEXECUTE;
575 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Exit")) {
577 if (m->running_as == MANAGER_INIT)
578 return bus_send_error_reply(m, message, NULL, -ENOTSUP);
580 if (!(reply = dbus_message_new_method_return(message)))
583 m->exit_code = MANAGER_EXIT;
585 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "SetEnvironment")) {
586 char **l = NULL, **e = NULL;
588 if ((r = bus_parse_strv(message, &l)) < 0) {
592 return bus_send_error_reply(m, message, NULL, r);
595 e = strv_env_merge(m->environment, l, NULL);
601 if (!(reply = dbus_message_new_method_return(message))) {
606 strv_free(m->environment);
609 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "UnsetEnvironment")) {
610 char **l = NULL, **e = NULL;
612 if ((r = bus_parse_strv(message, &l)) < 0) {
616 return bus_send_error_reply(m, message, NULL, r);
619 e = strv_env_delete(m->environment, l, NULL);
625 if (!(reply = dbus_message_new_method_return(message)))
628 strv_free(m->environment);
632 return bus_default_message_handler(m, message, NULL, properties);
637 if (!dbus_connection_send(connection, reply, NULL))
640 dbus_message_unref(reply);
643 return DBUS_HANDLER_RESULT_HANDLED;
649 dbus_message_unref(reply);
651 dbus_error_free(&error);
653 return DBUS_HANDLER_RESULT_NEED_MEMORY;
656 const DBusObjectPathVTable bus_manager_vtable = {
657 .message_function = bus_manager_message_handler