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/>.
27 #define INTROSPECTION_BEGIN \
28 DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \
30 " <interface name=\"org.freedesktop.systemd1\">" \
31 " <method name=\"GetUnit\">" \
32 " <arg name=\"name\" type=\"s\" direction=\"in\"/>" \
33 " <arg name=\"unit\" type=\"o\" direction=\"out\"/>" \
35 " <method name=\"LoadUnit\">" \
36 " <arg name=\"name\" type=\"s\" direction=\"in\"/>" \
37 " <arg name=\"unit\" type=\"o\" direction=\"out\"/>" \
39 " <method name=\"GetJob\">" \
40 " <arg name=\"id\" type=\"u\" direction=\"in\"/>" \
41 " <arg name=\"job\" type=\"o\" direction=\"out\"/>" \
43 " <method name=\"ClearJobs\"/>" \
44 " <method name=\"ListUnits\">" \
45 " <arg name=\"units\" type=\"a(ssssouso)\" direction=\"out\"/>" \
47 " <method name=\"ListJobs\">" \
48 " <arg name=\"jobs\" type=\"a(usssoo)\" direction=\"out\"/>" \
50 " <method name=\"Subscribe\"/>" \
51 " <method name=\"Unsubscribe\"/>" \
52 " <method name=\"Dump\"/>" \
53 " <signal name=\"UnitNew\">" \
54 " <arg name=\"id\" type=\"s\"/>" \
55 " <arg name=\"unit\" type=\"o\"/>" \
57 " <signal name=\"UnitRemoved\">" \
58 " <arg name=\"id\" type=\"s\"/>" \
59 " <arg name=\"unit\" type=\"o\"/>" \
61 " <signal name=\"JobNew\">" \
62 " <arg name=\"id\" type=\"u\"/>" \
63 " <arg name=\"job\" type=\"o\"/>" \
65 " <signal name=\"JobRemoved\">" \
66 " <arg name=\"id\" type=\"u\"/>" \
67 " <arg name=\"job\" type=\"o\"/>" \
70 BUS_PROPERTIES_INTERFACE \
71 BUS_INTROSPECTABLE_INTERFACE
73 #define INTROSPECTION_END \
76 static DBusHandlerResult bus_manager_message_handler(DBusConnection *connection, DBusMessage *message, void *data) {
80 DBusMessage *reply = NULL;
87 dbus_error_init(&error);
89 log_debug("Got D-Bus request: %s.%s() on %s",
90 dbus_message_get_interface(message),
91 dbus_message_get_member(message),
92 dbus_message_get_path(message));
94 if (dbus_message_is_method_call(message, "org.freedesktop.systemd1", "GetUnit")) {
98 if (!dbus_message_get_args(
101 DBUS_TYPE_STRING, &name,
103 return bus_send_error_reply(m, message, &error, -EINVAL);
105 if (!(u = manager_get_unit(m, name)))
106 return bus_send_error_reply(m, message, NULL, -ENOENT);
108 if (!(reply = dbus_message_new_method_return(message)))
111 if (!(path = unit_dbus_path(u)))
114 if (!dbus_message_append_args(
116 DBUS_TYPE_OBJECT_PATH, &path,
120 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1", "LoadUnit")) {
124 if (!dbus_message_get_args(
127 DBUS_TYPE_STRING, &name,
129 return bus_send_error_reply(m, message, &error, -EINVAL);
131 if ((r = manager_load_unit(m, name, &u)) < 0)
132 return bus_send_error_reply(m, message, NULL, r);
134 if (!(reply = dbus_message_new_method_return(message)))
137 if (!(path = unit_dbus_path(u)))
140 if (!dbus_message_append_args(
142 DBUS_TYPE_OBJECT_PATH, &path,
146 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1", "GetJob")) {
150 if (!dbus_message_get_args(
153 DBUS_TYPE_UINT32, &id,
155 return bus_send_error_reply(m, message, &error, -EINVAL);
157 if (!(j = manager_get_job(m, id)))
158 return bus_send_error_reply(m, message, NULL, -ENOENT);
160 if (!(reply = dbus_message_new_method_return(message)))
163 if (!(path = job_dbus_path(j)))
166 if (!dbus_message_append_args(
168 DBUS_TYPE_OBJECT_PATH, &path,
172 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1", "ClearJobs")) {
174 manager_clear_jobs(m);
176 if (!(reply = dbus_message_new_method_return(message)))
179 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1", "ListUnits")) {
180 DBusMessageIter iter, sub;
185 if (!(reply = dbus_message_new_method_return(message)))
188 dbus_message_iter_init_append(reply, &iter);
190 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(ssssouso)", &sub))
193 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
194 char *u_path, *j_path;
195 const char *id, *description, *load_state, *active_state, *job_type;
196 DBusMessageIter sub2;
203 if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
206 description = unit_description(u);
207 load_state = unit_load_state_to_string(u->meta.load_state);
208 active_state = unit_active_state_to_string(unit_active_state(u));
210 if (!(u_path = unit_dbus_path(u)))
214 job_id = (uint32_t) u->meta.job->id;
216 if (!(j_path = job_dbus_path(u->meta.job))) {
221 job_type = job_type_to_string(u->meta.job->type);
228 if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &id) ||
229 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &description) ||
230 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &load_state) ||
231 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &active_state) ||
232 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path) ||
233 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &job_id) ||
234 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &job_type) ||
235 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path)) {
246 if (!dbus_message_iter_close_container(&sub, &sub2))
250 if (!dbus_message_iter_close_container(&iter, &sub))
253 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1", "ListJobs")) {
254 DBusMessageIter iter, sub;
258 if (!(reply = dbus_message_new_method_return(message)))
261 dbus_message_iter_init_append(reply, &iter);
263 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(usssoo)", &sub))
266 HASHMAP_FOREACH(j, m->jobs, i) {
267 char *u_path, *j_path;
268 const char *unit, *state, *type;
270 DBusMessageIter sub2;
272 if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
275 id = (uint32_t) j->id;
276 unit = unit_id(j->unit);
277 state = job_state_to_string(j->state);
278 type = job_type_to_string(j->type);
280 if (!(j_path = job_dbus_path(j)))
283 if (!(u_path = unit_dbus_path(j->unit))) {
288 if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &id) ||
289 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &unit) ||
290 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &type) ||
291 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &state) ||
292 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path) ||
293 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path)) {
302 if (!dbus_message_iter_close_container(&sub, &sub2))
306 if (!dbus_message_iter_close_container(&iter, &sub))
309 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1", "Subscribe")) {
312 if (!(client = strdup(dbus_message_get_sender(message))))
315 r = set_put(m->subscribed, client);
318 return bus_send_error_reply(m, message, NULL, r);
320 if (!(reply = dbus_message_new_method_return(message)))
323 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1", "Unsubscribe")) {
326 if (!(client = set_remove(m->subscribed, (char*) dbus_message_get_sender(message))))
327 return bus_send_error_reply(m, message, NULL, -ENOENT);
331 if (!(reply = dbus_message_new_method_return(message)))
334 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1", "Dump")) {
339 if (!(reply = dbus_message_new_method_return(message)))
342 if (!(f = open_memstream(&dump, &size)))
345 manager_dump_units(m, f, NULL);
346 manager_dump_jobs(m, f, NULL);
356 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &dump, DBUS_TYPE_INVALID)) {
363 } else if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) {
364 char *introspection = NULL;
372 if (!(reply = dbus_message_new_method_return(message)))
375 /* We roll our own introspection code here, instead of
376 * relying on bus_default_message_handler() because we
377 * need to generate our introspection string
380 if (!(f = open_memstream(&introspection, &size)))
383 fputs(INTROSPECTION_BEGIN, f);
385 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
391 if (!(p = bus_path_escape(k))) {
397 fprintf(f, "<node name=\"unit/%s\"/>", p);
401 HASHMAP_FOREACH(j, m->jobs, i)
402 fprintf(f, "<node name=\"job/%lu\"/>", (unsigned long) j->id);
404 fputs(INTROSPECTION_END, f);
417 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &introspection, DBUS_TYPE_INVALID)) {
425 return bus_default_message_handler(m, message, NULL, NULL);
430 if (!dbus_connection_send(connection, reply, NULL))
433 dbus_message_unref(reply);
436 return DBUS_HANDLER_RESULT_HANDLED;
442 dbus_message_unref(reply);
444 dbus_error_free(&error);
446 return DBUS_HANDLER_RESULT_NEED_MEMORY;
449 const DBusObjectPathVTable bus_manager_vtable = {
450 .message_function = bus_manager_message_handler