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ea430986 LP |
1 | /*-*- Mode: C; c-basic-offset: 8 -*-*/ |
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" | |
26 | ||
27 | static const char introspection[] = | |
28 | DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE | |
29 | "<node>" | |
30 | " <interface name=\"org.freedesktop.systemd1.Job\">" | |
b548631a | 31 | " <method name=\"Cancel\"/>" |
c1e1601e | 32 | " <signal name=\"Changed\"/>" |
86fbf370 LP |
33 | " <property name=\"Id\" type=\"u\" access=\"read\"/>" |
34 | " <property name=\"Unit\" type=\"(so)\" access=\"read\"/>" | |
b548631a | 35 | " <property name=\"JobType\" type=\"s\" access=\"read\"/>" |
86fbf370 | 36 | " <property name=\"State\" type=\"s\" access=\"read\"/>" |
ea430986 LP |
37 | " </interface>" |
38 | BUS_PROPERTIES_INTERFACE | |
39 | BUS_INTROSPECTABLE_INTERFACE | |
40 | "</node>"; | |
41 | ||
86fbf370 LP |
42 | static int bus_job_append_state(Manager *m, DBusMessageIter *i, const char *property, void *data) { |
43 | Job *j = data; | |
44 | const char *state; | |
45 | ||
46 | assert(m); | |
47 | assert(i); | |
48 | assert(property); | |
49 | assert(j); | |
50 | ||
51 | state = job_state_to_string(j->state); | |
52 | ||
53 | if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &state)) | |
54 | return -ENOMEM; | |
55 | ||
56 | return 0; | |
57 | } | |
58 | ||
59 | static int bus_job_append_type(Manager *m, DBusMessageIter *i, const char *property, void *data) { | |
60 | Job *j = data; | |
61 | const char *type; | |
62 | ||
63 | assert(m); | |
64 | assert(i); | |
65 | assert(property); | |
66 | assert(j); | |
67 | ||
68 | type = job_type_to_string(j->type); | |
69 | ||
70 | if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &type)) | |
71 | return -ENOMEM; | |
72 | ||
73 | return 0; | |
74 | } | |
75 | ||
76 | static int bus_job_append_unit(Manager *m, DBusMessageIter *i, const char *property, void *data) { | |
77 | Job *j = data; | |
78 | DBusMessageIter sub; | |
79 | char *p; | |
80 | const char *id; | |
81 | ||
82 | assert(m); | |
83 | assert(i); | |
84 | assert(property); | |
85 | assert(j); | |
86 | ||
87 | if (!dbus_message_iter_open_container(i, DBUS_TYPE_STRUCT, NULL, &sub)) | |
88 | return -ENOMEM; | |
89 | ||
90 | if (!(p = unit_dbus_path(j->unit))) | |
91 | return -ENOMEM; | |
92 | ||
93 | id = unit_id(j->unit); | |
94 | ||
95 | if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &id) || | |
96 | !dbus_message_iter_append_basic(&sub, DBUS_TYPE_OBJECT_PATH, &p)) { | |
97 | free(p); | |
98 | return -ENOMEM; | |
99 | } | |
100 | ||
101 | free(p); | |
102 | ||
103 | if (!dbus_message_iter_close_container(i, &sub)) | |
104 | return -ENOMEM; | |
105 | ||
106 | return 0; | |
107 | } | |
108 | ||
109 | static DBusHandlerResult bus_job_message_dispatch(Job *j, DBusMessage *message) { | |
86fbf370 | 110 | const BusProperty properties[] = { |
b548631a LP |
111 | { "org.freedesktop.systemd1.Job", "Id", bus_property_append_uint32, "u", &j->id }, |
112 | { "org.freedesktop.systemd1.Job", "State", bus_job_append_state, "s", j }, | |
113 | { "org.freedesktop.systemd1.Job", "JobType", bus_job_append_type, "s", j }, | |
114 | { "org.freedesktop.systemd1.Job", "Unit", bus_job_append_unit, "(so)", j }, | |
86fbf370 LP |
115 | { NULL, NULL, NULL, NULL, NULL } |
116 | }; | |
117 | ||
b548631a LP |
118 | DBusMessage *reply = NULL; |
119 | Manager *m = j->manager; | |
120 | ||
121 | if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Job", "Cancel")) { | |
122 | if (!(reply = dbus_message_new_method_return(message))) | |
123 | goto oom; | |
124 | ||
125 | job_free(j); | |
126 | ||
127 | } else | |
128 | return bus_default_message_handler(j->manager, message, introspection, properties); | |
129 | ||
130 | if (reply) { | |
f278026d | 131 | if (!dbus_connection_send(m->api_bus, reply, NULL)) |
b548631a LP |
132 | goto oom; |
133 | ||
134 | dbus_message_unref(reply); | |
135 | } | |
136 | ||
137 | return DBUS_HANDLER_RESULT_HANDLED; | |
138 | ||
139 | oom: | |
140 | if (reply) | |
141 | dbus_message_unref(reply); | |
142 | ||
143 | return DBUS_HANDLER_RESULT_NEED_MEMORY; | |
86fbf370 LP |
144 | } |
145 | ||
47be870b | 146 | static DBusHandlerResult bus_job_message_handler(DBusConnection *connection, DBusMessage *message, void *data) { |
ea430986 | 147 | Manager *m = data; |
86fbf370 LP |
148 | Job *j; |
149 | int r; | |
ea430986 LP |
150 | |
151 | assert(connection); | |
152 | assert(message); | |
153 | assert(m); | |
154 | ||
155 | log_debug("Got D-Bus request: %s.%s() on %s", | |
156 | dbus_message_get_interface(message), | |
157 | dbus_message_get_member(message), | |
158 | dbus_message_get_path(message)); | |
159 | ||
86fbf370 LP |
160 | if ((r = manager_get_job_from_dbus_path(m, dbus_message_get_path(message), &j)) < 0) { |
161 | ||
162 | if (r == -ENOMEM) | |
163 | return DBUS_HANDLER_RESULT_NEED_MEMORY; | |
164 | ||
165 | if (r == -ENOENT) | |
166 | return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; | |
167 | ||
168 | return bus_send_error_reply(m, message, NULL, r); | |
169 | } | |
170 | ||
171 | return bus_job_message_dispatch(j, message); | |
ea430986 LP |
172 | } |
173 | ||
174 | const DBusObjectPathVTable bus_job_vtable = { | |
175 | .message_function = bus_job_message_handler | |
176 | }; | |
c1e1601e LP |
177 | |
178 | void bus_job_send_change_signal(Job *j) { | |
179 | char *p = NULL; | |
180 | DBusMessage *m = NULL; | |
181 | ||
182 | assert(j); | |
183 | assert(j->in_dbus_queue); | |
184 | ||
185 | LIST_REMOVE(Job, dbus_queue, j->manager->dbus_job_queue, j); | |
186 | j->in_dbus_queue = false; | |
187 | ||
188 | if (set_isempty(j->manager->subscribed)) | |
189 | return; | |
190 | ||
191 | if (!(p = job_dbus_path(j))) | |
192 | goto oom; | |
193 | ||
194 | if (j->sent_dbus_new_signal) { | |
195 | /* Send a change signal */ | |
196 | ||
197 | if (!(m = dbus_message_new_signal(p, "org.freedesktop.systemd1.Job", "Changed"))) | |
198 | goto oom; | |
199 | } else { | |
200 | /* Send a new signal */ | |
201 | ||
202 | if (!(m = dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1", "JobNew"))) | |
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 | ||
f278026d | 212 | if (!dbus_connection_send(j->manager->api_bus, m, NULL)) |
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 | ||
231 | void bus_job_send_removed_signal(Job *j) { | |
232 | char *p = NULL; | |
233 | DBusMessage *m = NULL; | |
234 | ||
235 | assert(j); | |
236 | ||
237 | if (set_isempty(j->manager->subscribed) || !j->sent_dbus_new_signal) | |
238 | return; | |
239 | ||
240 | if (!(p = job_dbus_path(j))) | |
241 | goto oom; | |
242 | ||
243 | if (!(m = dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1", "JobRemoved"))) | |
244 | goto oom; | |
245 | ||
246 | if (!dbus_message_append_args(m, | |
247 | DBUS_TYPE_UINT32, &j->id, | |
248 | DBUS_TYPE_OBJECT_PATH, &p, | |
249 | DBUS_TYPE_INVALID)) | |
250 | goto oom; | |
251 | ||
f278026d | 252 | if (!dbus_connection_send(j->manager->api_bus, m, NULL)) |
c1e1601e LP |
253 | goto oom; |
254 | ||
255 | free(p); | |
256 | dbus_message_unref(m); | |
257 | ||
258 | return; | |
259 | ||
260 | oom: | |
261 | free(p); | |
262 | ||
263 | if (m) | |
264 | dbus_message_unref(m); | |
265 | ||
266 | log_error("Failed to allocate job remove signal."); | |
267 | } |