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=\"unit\" 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 " <signal name=\"UnitNew\">" \
53 " <arg name=\"id\" type=\"s\"/>" \
54 " <arg name=\"unit\" type=\"o\"/>" \
56 " <signal name=\"UnitRemoved\">" \
57 " <arg name=\"id\" type=\"s\"/>" \
58 " <arg name=\"unit\" type=\"o\"/>" \
60 " <signal name=\"JobNew\">" \
61 " <arg name=\"id\" type=\"u\"/>" \
62 " <arg name=\"job\" type=\"o\"/>" \
64 " <signal name=\"JobRemoved\">" \
65 " <arg name=\"id\" type=\"u\"/>" \
66 " <arg name=\"job\" type=\"o\"/>" \
69 BUS_PROPERTIES_INTERFACE \
70 BUS_INTROSPECTABLE_INTERFACE
72 #define INTROSPECTION_END \
75 static DBusHandlerResult bus_manager_message_handler(DBusConnection *connection, DBusMessage *message, void *data) {
79 DBusMessage *reply = NULL;
86 dbus_error_init(&error);
88 log_debug("Got D-Bus request: %s.%s() on %s",
89 dbus_message_get_interface(message),
90 dbus_message_get_member(message),
91 dbus_message_get_path(message));
93 if (dbus_message_is_method_call(message, "org.freedesktop.systemd1", "GetUnit")) {
97 if (!dbus_message_get_args(
100 DBUS_TYPE_STRING, &name,
102 return bus_send_error_reply(m, message, &error, -EINVAL);
104 if (!(u = manager_get_unit(m, name)))
105 return bus_send_error_reply(m, message, NULL, -ENOENT);
107 if (!(reply = dbus_message_new_method_return(message)))
110 if (!(path = unit_dbus_path(u)))
113 if (!dbus_message_append_args(
115 DBUS_TYPE_OBJECT_PATH, &path,
119 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1", "LoadUnit")) {
123 if (!dbus_message_get_args(
126 DBUS_TYPE_STRING, &name,
128 return bus_send_error_reply(m, message, &error, -EINVAL);
130 if ((r = manager_load_unit(m, name, &u)) < 0)
131 return bus_send_error_reply(m, message, NULL, r);
133 if (!(reply = dbus_message_new_method_return(message)))
136 if (!(path = unit_dbus_path(u)))
139 if (!dbus_message_append_args(
141 DBUS_TYPE_OBJECT_PATH, &path,
145 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1", "GetJob")) {
149 if (!dbus_message_get_args(
152 DBUS_TYPE_UINT32, &id,
154 return bus_send_error_reply(m, message, &error, -EINVAL);
156 if (!(j = manager_get_job(m, id)))
157 return bus_send_error_reply(m, message, NULL, -ENOENT);
159 if (!(reply = dbus_message_new_method_return(message)))
162 if (!(path = job_dbus_path(j)))
165 if (!dbus_message_append_args(
167 DBUS_TYPE_OBJECT_PATH, &path,
171 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1", "ClearJobs")) {
173 manager_clear_jobs(m);
175 if (!(reply = dbus_message_new_method_return(message)))
178 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1", "ListUnits")) {
179 DBusMessageIter iter, sub;
184 if (!(reply = dbus_message_new_method_return(message)))
187 dbus_message_iter_init_append(reply, &iter);
189 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(ssssouso)", &sub))
192 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
193 char *u_path, *j_path;
194 const char *id, *description, *load_state, *active_state, *job_type;
195 DBusMessageIter sub2;
202 if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
205 description = unit_description(u);
206 load_state = unit_load_state_to_string(u->meta.load_state);
207 active_state = unit_active_state_to_string(unit_active_state(u));
209 if (!(u_path = unit_dbus_path(u)))
213 job_id = (uint32_t) u->meta.job->id;
215 if (!(j_path = job_dbus_path(u->meta.job))) {
220 job_type = job_type_to_string(u->meta.job->type);
227 if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &id) ||
228 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &description) ||
229 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &load_state) ||
230 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &active_state) ||
231 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path) ||
232 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &job_id) ||
233 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &job_type) ||
234 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path)) {
245 if (!dbus_message_iter_close_container(&sub, &sub2))
249 if (!dbus_message_iter_close_container(&iter, &sub))
252 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1", "ListJobs")) {
253 DBusMessageIter iter, sub;
257 if (!(reply = dbus_message_new_method_return(message)))
260 dbus_message_iter_init_append(reply, &iter);
262 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(usssoo)", &sub))
265 HASHMAP_FOREACH(j, m->jobs, i) {
266 char *u_path, *j_path;
267 const char *unit, *state, *type;
269 DBusMessageIter sub2;
271 if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
274 id = (uint32_t) j->id;
275 unit = unit_id(j->unit);
276 state = job_state_to_string(j->state);
277 type = job_type_to_string(j->type);
279 if (!(j_path = job_dbus_path(j)))
282 if (!(u_path = unit_dbus_path(j->unit))) {
287 if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &id) ||
288 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &unit) ||
289 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &type) ||
290 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &state) ||
291 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path) ||
292 !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path)) {
301 if (!dbus_message_iter_close_container(&sub, &sub2))
305 if (!dbus_message_iter_close_container(&iter, &sub))
308 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1", "Subscribe")) {
311 if (!(client = strdup(dbus_message_get_sender(message))))
314 r = set_put(m->subscribed, client);
317 return bus_send_error_reply(m, message, NULL, r);
319 if (!(reply = dbus_message_new_method_return(message)))
322 } else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1", "Unsubscribe")) {
325 if (!(client = set_remove(m->subscribed, (char*) dbus_message_get_sender(message))))
326 return bus_send_error_reply(m, message, NULL, -ENOENT);
330 if (!(reply = dbus_message_new_method_return(message)))
333 } else if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) {
334 char *introspection = NULL;
342 if (!(reply = dbus_message_new_method_return(message)))
345 /* We roll our own introspection code here, instead of
346 * relying on bus_default_message_handler() because we
347 * need to generate our introspection string
350 if (!(f = open_memstream(&introspection, &size)))
353 fputs(INTROSPECTION_BEGIN, f);
355 HASHMAP_FOREACH_KEY(u, k, m->units, i) {
361 if (!(p = bus_path_escape(k))) {
367 fprintf(f, "<node name=\"unit/%s\"/>", p);
371 HASHMAP_FOREACH(j, m->jobs, i)
372 fprintf(f, "<node name=\"job/%lu\"/>", (unsigned long) j->id);
374 fputs(INTROSPECTION_END, f);
387 if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &introspection, DBUS_TYPE_INVALID)) {
395 return bus_default_message_handler(m, message, NULL, NULL);
400 if (!dbus_connection_send(connection, reply, NULL))
403 dbus_message_unref(reply);
406 return DBUS_HANDLER_RESULT_HANDLED;
412 dbus_message_unref(reply);
414 dbus_error_free(&error);
416 return DBUS_HANDLER_RESULT_NEED_MEMORY;
419 const DBusObjectPathVTable bus_manager_vtable = {
420 .message_function = bus_manager_message_handler