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d6c9574f | 1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
ea430986 | 2 | |
a7334b09 LP |
3 | /*** |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
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. | |
12 | ||
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. | |
17 | ||
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/>. | |
20 | ***/ | |
21 | ||
86fbf370 LP |
22 | #include <errno.h> |
23 | ||
ea430986 LP |
24 | #include "dbus.h" |
25 | #include "log.h" | |
4139c1b2 | 26 | #include "dbus-job.h" |
ea430986 | 27 | |
4288f619 LP |
28 | #define BUS_JOB_INTERFACE \ |
29 | " <interface name=\"org.freedesktop.systemd1.Job\">\n" \ | |
30 | " <method name=\"Cancel\"/>\n" \ | |
4288f619 LP |
31 | " <property name=\"Id\" type=\"u\" access=\"read\"/>\n" \ |
32 | " <property name=\"Unit\" type=\"(so)\" access=\"read\"/>\n" \ | |
33 | " <property name=\"JobType\" type=\"s\" access=\"read\"/>\n" \ | |
34 | " <property name=\"State\" type=\"s\" access=\"read\"/>\n" \ | |
35 | " </interface>\n" | |
36 | ||
37 | #define INTROSPECTION \ | |
38 | DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \ | |
39 | "<node>\n" \ | |
40 | BUS_JOB_INTERFACE \ | |
41 | BUS_PROPERTIES_INTERFACE \ | |
c4e2ceae | 42 | BUS_PEER_INTERFACE \ |
4288f619 LP |
43 | BUS_INTROSPECTABLE_INTERFACE \ |
44 | "</node>\n" | |
45 | ||
46 | const char bus_job_interface[] = BUS_JOB_INTERFACE; | |
ea430986 | 47 | |
c4e2ceae LP |
48 | #define INVALIDATING_PROPERTIES \ |
49 | "State\0" \ | |
50 | "\0" \ | |
51 | ||
4139c1b2 LP |
52 | static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_job_append_state, job_state, JobState); |
53 | static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_job_append_type, job_type, JobType); | |
86fbf370 LP |
54 | |
55 | static int bus_job_append_unit(Manager *m, DBusMessageIter *i, const char *property, void *data) { | |
56 | Job *j = data; | |
57 | DBusMessageIter sub; | |
58 | char *p; | |
86fbf370 LP |
59 | |
60 | assert(m); | |
61 | assert(i); | |
62 | assert(property); | |
63 | assert(j); | |
64 | ||
65 | if (!dbus_message_iter_open_container(i, DBUS_TYPE_STRUCT, NULL, &sub)) | |
66 | return -ENOMEM; | |
67 | ||
68 | if (!(p = unit_dbus_path(j->unit))) | |
69 | return -ENOMEM; | |
70 | ||
9e2f7c11 | 71 | if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &j->unit->meta.id) || |
86fbf370 LP |
72 | !dbus_message_iter_append_basic(&sub, DBUS_TYPE_OBJECT_PATH, &p)) { |
73 | free(p); | |
74 | return -ENOMEM; | |
75 | } | |
76 | ||
77 | free(p); | |
78 | ||
79 | if (!dbus_message_iter_close_container(i, &sub)) | |
80 | return -ENOMEM; | |
81 | ||
82 | return 0; | |
83 | } | |
84 | ||
5e8d1c9a | 85 | static DBusHandlerResult bus_job_message_dispatch(Job *j, DBusConnection *connection, DBusMessage *message) { |
86fbf370 | 86 | const BusProperty properties[] = { |
6f4706b7 LP |
87 | { "org.freedesktop.systemd1.Job", "Id", bus_property_append_uint32, "u", &j->id }, |
88 | { "org.freedesktop.systemd1.Job", "State", bus_job_append_state, "s", &j->state }, | |
89 | { "org.freedesktop.systemd1.Job", "JobType", bus_job_append_type, "s", &j->type }, | |
90 | { "org.freedesktop.systemd1.Job", "Unit", bus_job_append_unit, "(so)", j }, | |
86fbf370 LP |
91 | { NULL, NULL, NULL, NULL, NULL } |
92 | }; | |
93 | ||
b548631a | 94 | DBusMessage *reply = NULL; |
b548631a LP |
95 | |
96 | if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Job", "Cancel")) { | |
97 | if (!(reply = dbus_message_new_method_return(message))) | |
98 | goto oom; | |
99 | ||
100 | job_free(j); | |
101 | ||
102 | } else | |
5e8d1c9a | 103 | return bus_default_message_handler(j->manager, connection, message, INTROSPECTION, properties); |
b548631a LP |
104 | |
105 | if (reply) { | |
5e8d1c9a | 106 | if (!dbus_connection_send(connection, reply, NULL)) |
b548631a LP |
107 | goto oom; |
108 | ||
109 | dbus_message_unref(reply); | |
110 | } | |
111 | ||
112 | return DBUS_HANDLER_RESULT_HANDLED; | |
113 | ||
114 | oom: | |
115 | if (reply) | |
116 | dbus_message_unref(reply); | |
117 | ||
118 | return DBUS_HANDLER_RESULT_NEED_MEMORY; | |
86fbf370 LP |
119 | } |
120 | ||
5e8d1c9a | 121 | static DBusHandlerResult bus_job_message_handler(DBusConnection *connection, DBusMessage *message, void *data) { |
ea430986 | 122 | Manager *m = data; |
86fbf370 LP |
123 | Job *j; |
124 | int r; | |
ea430986 LP |
125 | |
126 | assert(connection); | |
127 | assert(message); | |
128 | assert(m); | |
129 | ||
86fbf370 LP |
130 | if ((r = manager_get_job_from_dbus_path(m, dbus_message_get_path(message), &j)) < 0) { |
131 | ||
132 | if (r == -ENOMEM) | |
133 | return DBUS_HANDLER_RESULT_NEED_MEMORY; | |
134 | ||
135 | if (r == -ENOENT) | |
136 | return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; | |
137 | ||
5e8d1c9a | 138 | return bus_send_error_reply(m, connection, message, NULL, r); |
86fbf370 LP |
139 | } |
140 | ||
5e8d1c9a | 141 | return bus_job_message_dispatch(j, connection, message); |
ea430986 LP |
142 | } |
143 | ||
144 | const DBusObjectPathVTable bus_job_vtable = { | |
145 | .message_function = bus_job_message_handler | |
146 | }; | |
c1e1601e | 147 | |
a567261a LP |
148 | static int job_send_message(Job *j, DBusMessage *m) { |
149 | int r; | |
150 | ||
151 | assert(j); | |
152 | assert(m); | |
153 | ||
154 | if (bus_has_subscriber(j->manager)) { | |
155 | if ((r = bus_broadcast(j->manager, m)) < 0) | |
156 | return r; | |
157 | ||
158 | } else if (j->bus_client) { | |
159 | /* If nobody is subscribed, we just send the message | |
160 | * to the client which created the job */ | |
161 | ||
162 | assert(j->bus); | |
163 | ||
164 | if (!dbus_message_set_destination(m, j->bus_client)) | |
165 | return -ENOMEM; | |
166 | ||
167 | if (!dbus_connection_send(j->bus, m, NULL)) | |
168 | return -ENOMEM; | |
169 | } | |
170 | ||
171 | return 0; | |
172 | } | |
173 | ||
c1e1601e LP |
174 | void bus_job_send_change_signal(Job *j) { |
175 | char *p = NULL; | |
176 | DBusMessage *m = NULL; | |
177 | ||
178 | assert(j); | |
c1e1601e | 179 | |
c0bd0cf7 LP |
180 | if (j->in_dbus_queue) { |
181 | LIST_REMOVE(Job, dbus_queue, j->manager->dbus_job_queue, j); | |
182 | j->in_dbus_queue = false; | |
183 | } | |
c1e1601e | 184 | |
a567261a | 185 | if (!bus_has_subscriber(j->manager) && !j->bus_client) { |
94b6dfa2 | 186 | j->sent_dbus_new_signal = true; |
c1e1601e | 187 | return; |
94b6dfa2 | 188 | } |
c1e1601e LP |
189 | |
190 | if (!(p = job_dbus_path(j))) | |
191 | goto oom; | |
192 | ||
193 | if (j->sent_dbus_new_signal) { | |
c4e2ceae | 194 | /* Send a properties changed signal */ |
c1e1601e | 195 | |
c4e2ceae | 196 | if (!(m = bus_properties_changed_new(p, "org.freedesktop.systemd1.Job", INVALIDATING_PROPERTIES))) |
c1e1601e | 197 | goto oom; |
c4e2ceae | 198 | |
c1e1601e LP |
199 | } else { |
200 | /* Send a new signal */ | |
201 | ||
701cc384 | 202 | if (!(m = dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "JobNew"))) |
c1e1601e LP |
203 | goto oom; |
204 | ||
205 | if (!dbus_message_append_args(m, | |
206 | DBUS_TYPE_UINT32, &j->id, | |
207 | DBUS_TYPE_OBJECT_PATH, &p, | |
208 | DBUS_TYPE_INVALID)) | |
209 | goto oom; | |
210 | } | |
211 | ||
a567261a | 212 | if (job_send_message(j, m) < 0) |
c1e1601e LP |
213 | goto oom; |
214 | ||
215 | free(p); | |
216 | dbus_message_unref(m); | |
217 | ||
218 | j->sent_dbus_new_signal = true; | |
219 | ||
220 | return; | |
221 | ||
222 | oom: | |
223 | free(p); | |
224 | ||
225 | if (m) | |
226 | dbus_message_unref(m); | |
227 | ||
228 | log_error("Failed to allocate job change signal."); | |
229 | } | |
230 | ||
7535cc78 | 231 | void bus_job_send_removed_signal(Job *j, bool success) { |
c1e1601e LP |
232 | char *p = NULL; |
233 | DBusMessage *m = NULL; | |
7535cc78 | 234 | dbus_bool_t b = success; |
c1e1601e LP |
235 | |
236 | assert(j); | |
237 | ||
a567261a | 238 | if (!bus_has_subscriber(j->manager) && !j->bus_client) |
c1e1601e LP |
239 | return; |
240 | ||
7535cc78 LP |
241 | if (!j->sent_dbus_new_signal) |
242 | bus_job_send_change_signal(j); | |
243 | ||
c1e1601e LP |
244 | if (!(p = job_dbus_path(j))) |
245 | goto oom; | |
246 | ||
701cc384 | 247 | if (!(m = dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "JobRemoved"))) |
c1e1601e LP |
248 | goto oom; |
249 | ||
250 | if (!dbus_message_append_args(m, | |
251 | DBUS_TYPE_UINT32, &j->id, | |
252 | DBUS_TYPE_OBJECT_PATH, &p, | |
7535cc78 | 253 | DBUS_TYPE_BOOLEAN, &b, |
c1e1601e LP |
254 | DBUS_TYPE_INVALID)) |
255 | goto oom; | |
256 | ||
a567261a | 257 | if (job_send_message(j, m) < 0) |
c1e1601e LP |
258 | goto oom; |
259 | ||
260 | free(p); | |
261 | dbus_message_unref(m); | |
262 | ||
263 | return; | |
264 | ||
265 | oom: | |
266 | free(p); | |
267 | ||
268 | if (m) | |
269 | dbus_message_unref(m); | |
270 | ||
271 | log_error("Failed to allocate job remove signal."); | |
272 | } |