1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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 #include "dbus-common.h"
29 #define BUS_JOB_INTERFACE \
30 " <interface name=\"org.freedesktop.systemd1.Job\">\n" \
31 " <method name=\"Cancel\"/>\n" \
32 " <property name=\"Id\" type=\"u\" access=\"read\"/>\n" \
33 " <property name=\"Unit\" type=\"(so)\" access=\"read\"/>\n" \
34 " <property name=\"JobType\" type=\"s\" access=\"read\"/>\n" \
35 " <property name=\"State\" type=\"s\" access=\"read\"/>\n" \
38 #define INTROSPECTION \
39 DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \
42 BUS_PROPERTIES_INTERFACE \
44 BUS_INTROSPECTABLE_INTERFACE \
47 const char bus_job_interface
[] _introspect_("Job") = BUS_JOB_INTERFACE
;
49 #define INTERFACES_LIST \
50 BUS_GENERIC_INTERFACES_LIST \
51 "org.freedesktop.systemd1.Job\0"
53 #define INVALIDATING_PROPERTIES \
56 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_job_append_state
, job_state
, JobState
);
57 static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_job_append_type
, job_type
, JobType
);
59 static int bus_job_append_unit(DBusMessageIter
*i
, const char *property
, void *data
) {
68 if (!dbus_message_iter_open_container(i
, DBUS_TYPE_STRUCT
, NULL
, &sub
))
71 if (!(p
= unit_dbus_path(j
->unit
)))
74 if (!dbus_message_iter_append_basic(&sub
, DBUS_TYPE_STRING
, &j
->unit
->id
) ||
75 !dbus_message_iter_append_basic(&sub
, DBUS_TYPE_OBJECT_PATH
, &p
)) {
82 if (!dbus_message_iter_close_container(i
, &sub
))
88 static const BusProperty bus_job_properties
[] = {
89 { "Id", bus_property_append_uint32
, "u", offsetof(Job
, id
) },
90 { "State", bus_job_append_state
, "s", offsetof(Job
, state
) },
91 { "JobType", bus_job_append_type
, "s", offsetof(Job
, type
) },
92 { "Unit", bus_job_append_unit
, "(so)", 0 },
96 static DBusHandlerResult
bus_job_message_dispatch(Job
*j
, DBusConnection
*connection
, DBusMessage
*message
) {
97 DBusMessage
*reply
= NULL
;
99 if (dbus_message_is_method_call(message
, "org.freedesktop.systemd1.Job", "Cancel")) {
100 if (!(reply
= dbus_message_new_method_return(message
)))
103 job_finish_and_invalidate(j
, JOB_CANCELED
);
106 const BusBoundProperties bps
[] = {
107 { "org.freedesktop.systemd1.Job", bus_job_properties
, j
},
110 return bus_default_message_handler(connection
, message
, INTROSPECTION
, INTERFACES_LIST
, bps
);
114 if (!dbus_connection_send(connection
, reply
, NULL
))
117 dbus_message_unref(reply
);
120 return DBUS_HANDLER_RESULT_HANDLED
;
124 dbus_message_unref(reply
);
126 return DBUS_HANDLER_RESULT_NEED_MEMORY
;
129 static DBusHandlerResult
bus_job_message_handler(DBusConnection
*connection
, DBusMessage
*message
, void *data
) {
139 if (streq(dbus_message_get_path(message
), "/org/freedesktop/systemd1/job")) {
140 /* Be nice to gdbus and return introspection data for our mid-level paths */
142 if (dbus_message_is_method_call(message
, "org.freedesktop.DBus.Introspectable", "Introspect")) {
143 char *introspection
= NULL
;
148 if (!(reply
= dbus_message_new_method_return(message
)))
151 /* We roll our own introspection code here, instead of
152 * relying on bus_default_message_handler() because we
153 * need to generate our introspection string
156 if (!(f
= open_memstream(&introspection
, &size
)))
159 fputs(DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE
162 fputs(BUS_INTROSPECTABLE_INTERFACE
, f
);
163 fputs(BUS_PEER_INTERFACE
, f
);
165 HASHMAP_FOREACH(j
, m
->jobs
, i
)
166 fprintf(f
, "<node name=\"job/%lu\"/>", (unsigned long) j
->id
);
168 fputs("</node>\n", f
);
181 if (!dbus_message_append_args(reply
, DBUS_TYPE_STRING
, &introspection
, DBUS_TYPE_INVALID
)) {
188 if (!dbus_connection_send(connection
, reply
, NULL
))
191 dbus_message_unref(reply
);
193 return DBUS_HANDLER_RESULT_HANDLED
;
196 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED
;
199 if ((r
= manager_get_job_from_dbus_path(m
, dbus_message_get_path(message
), &j
)) < 0) {
202 return DBUS_HANDLER_RESULT_NEED_MEMORY
;
208 dbus_set_error_const(&e
, DBUS_ERROR_UNKNOWN_OBJECT
, "Unknown job");
209 return bus_send_error_reply(connection
, message
, &e
, r
);
212 return bus_send_error_reply(connection
, message
, NULL
, r
);
215 return bus_job_message_dispatch(j
, connection
, message
);
219 dbus_message_unref(reply
);
221 return DBUS_HANDLER_RESULT_NEED_MEMORY
;
224 const DBusObjectPathVTable bus_job_vtable
= {
225 .message_function
= bus_job_message_handler
228 static int job_send_message(Job
*j
, DBusMessage
*m
) {
234 if (bus_has_subscriber(j
->manager
)) {
235 if ((r
= bus_broadcast(j
->manager
, m
)) < 0)
238 } else if (j
->bus_client
) {
239 /* If nobody is subscribed, we just send the message
240 * to the client which created the job */
244 if (!dbus_message_set_destination(m
, j
->bus_client
))
247 if (!dbus_connection_send(j
->bus
, m
, NULL
))
254 void bus_job_send_change_signal(Job
*j
) {
256 DBusMessage
*m
= NULL
;
260 if (j
->in_dbus_queue
) {
261 LIST_REMOVE(Job
, dbus_queue
, j
->manager
->dbus_job_queue
, j
);
262 j
->in_dbus_queue
= false;
265 if (!bus_has_subscriber(j
->manager
) && !j
->bus_client
) {
266 j
->sent_dbus_new_signal
= true;
270 if (!(p
= job_dbus_path(j
)))
273 if (j
->sent_dbus_new_signal
) {
274 /* Send a properties changed signal */
276 if (!(m
= bus_properties_changed_new(p
, "org.freedesktop.systemd1.Job", INVALIDATING_PROPERTIES
)))
280 /* Send a new signal */
282 if (!(m
= dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "JobNew")))
285 if (!dbus_message_append_args(m
,
286 DBUS_TYPE_UINT32
, &j
->id
,
287 DBUS_TYPE_OBJECT_PATH
, &p
,
292 if (job_send_message(j
, m
) < 0)
296 dbus_message_unref(m
);
298 j
->sent_dbus_new_signal
= true;
306 dbus_message_unref(m
);
308 log_error("Failed to allocate job change signal.");
311 void bus_job_send_removed_signal(Job
*j
) {
313 DBusMessage
*m
= NULL
;
318 if (!bus_has_subscriber(j
->manager
) && !j
->bus_client
)
321 if (!j
->sent_dbus_new_signal
)
322 bus_job_send_change_signal(j
);
324 if (!(p
= job_dbus_path(j
)))
327 if (!(m
= dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "JobRemoved")))
330 r
= job_result_to_string(j
->result
);
332 if (!dbus_message_append_args(m
,
333 DBUS_TYPE_UINT32
, &j
->id
,
334 DBUS_TYPE_OBJECT_PATH
, &p
,
335 DBUS_TYPE_STRING
, &r
,
339 if (job_send_message(j
, m
) < 0)
343 dbus_message_unref(m
);
351 dbus_message_unref(m
);
353 log_error("Failed to allocate job remove signal.");