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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" | |
4139c1b2 | 26 | #include "dbus-job.h" |
ea430986 LP |
27 | |
28 | static const char introspection[] = | |
29 | DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE | |
30 | "<node>" | |
31 | " <interface name=\"org.freedesktop.systemd1.Job\">" | |
b548631a | 32 | " <method name=\"Cancel\"/>" |
c1e1601e | 33 | " <signal name=\"Changed\"/>" |
86fbf370 LP |
34 | " <property name=\"Id\" type=\"u\" access=\"read\"/>" |
35 | " <property name=\"Unit\" type=\"(so)\" access=\"read\"/>" | |
b548631a | 36 | " <property name=\"JobType\" type=\"s\" access=\"read\"/>" |
86fbf370 | 37 | " <property name=\"State\" type=\"s\" access=\"read\"/>" |
ea430986 LP |
38 | " </interface>" |
39 | BUS_PROPERTIES_INTERFACE | |
40 | BUS_INTROSPECTABLE_INTERFACE | |
41 | "</node>"; | |
42 | ||
4139c1b2 LP |
43 | static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_job_append_state, job_state, JobState); |
44 | static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_job_append_type, job_type, JobType); | |
86fbf370 LP |
45 | |
46 | static int bus_job_append_unit(Manager *m, DBusMessageIter *i, const char *property, void *data) { | |
47 | Job *j = data; | |
48 | DBusMessageIter sub; | |
49 | char *p; | |
86fbf370 LP |
50 | |
51 | assert(m); | |
52 | assert(i); | |
53 | assert(property); | |
54 | assert(j); | |
55 | ||
56 | if (!dbus_message_iter_open_container(i, DBUS_TYPE_STRUCT, NULL, &sub)) | |
57 | return -ENOMEM; | |
58 | ||
59 | if (!(p = unit_dbus_path(j->unit))) | |
60 | return -ENOMEM; | |
61 | ||
9e2f7c11 | 62 | if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &j->unit->meta.id) || |
86fbf370 LP |
63 | !dbus_message_iter_append_basic(&sub, DBUS_TYPE_OBJECT_PATH, &p)) { |
64 | free(p); | |
65 | return -ENOMEM; | |
66 | } | |
67 | ||
68 | free(p); | |
69 | ||
70 | if (!dbus_message_iter_close_container(i, &sub)) | |
71 | return -ENOMEM; | |
72 | ||
73 | return 0; | |
74 | } | |
75 | ||
76 | static DBusHandlerResult bus_job_message_dispatch(Job *j, DBusMessage *message) { | |
86fbf370 | 77 | const BusProperty properties[] = { |
6f4706b7 LP |
78 | { "org.freedesktop.systemd1.Job", "Id", bus_property_append_uint32, "u", &j->id }, |
79 | { "org.freedesktop.systemd1.Job", "State", bus_job_append_state, "s", &j->state }, | |
80 | { "org.freedesktop.systemd1.Job", "JobType", bus_job_append_type, "s", &j->type }, | |
81 | { "org.freedesktop.systemd1.Job", "Unit", bus_job_append_unit, "(so)", j }, | |
86fbf370 LP |
82 | { NULL, NULL, NULL, NULL, NULL } |
83 | }; | |
84 | ||
b548631a LP |
85 | DBusMessage *reply = NULL; |
86 | Manager *m = j->manager; | |
87 | ||
88 | if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Job", "Cancel")) { | |
89 | if (!(reply = dbus_message_new_method_return(message))) | |
90 | goto oom; | |
91 | ||
92 | job_free(j); | |
93 | ||
94 | } else | |
95 | return bus_default_message_handler(j->manager, message, introspection, properties); | |
96 | ||
97 | if (reply) { | |
f278026d | 98 | if (!dbus_connection_send(m->api_bus, reply, NULL)) |
b548631a LP |
99 | goto oom; |
100 | ||
101 | dbus_message_unref(reply); | |
102 | } | |
103 | ||
104 | return DBUS_HANDLER_RESULT_HANDLED; | |
105 | ||
106 | oom: | |
107 | if (reply) | |
108 | dbus_message_unref(reply); | |
109 | ||
110 | return DBUS_HANDLER_RESULT_NEED_MEMORY; | |
86fbf370 LP |
111 | } |
112 | ||
47be870b | 113 | static DBusHandlerResult bus_job_message_handler(DBusConnection *connection, DBusMessage *message, void *data) { |
ea430986 | 114 | Manager *m = data; |
86fbf370 LP |
115 | Job *j; |
116 | int r; | |
ea430986 LP |
117 | |
118 | assert(connection); | |
119 | assert(message); | |
120 | assert(m); | |
121 | ||
122 | log_debug("Got D-Bus request: %s.%s() on %s", | |
123 | dbus_message_get_interface(message), | |
124 | dbus_message_get_member(message), | |
125 | dbus_message_get_path(message)); | |
126 | ||
86fbf370 LP |
127 | if ((r = manager_get_job_from_dbus_path(m, dbus_message_get_path(message), &j)) < 0) { |
128 | ||
129 | if (r == -ENOMEM) | |
130 | return DBUS_HANDLER_RESULT_NEED_MEMORY; | |
131 | ||
132 | if (r == -ENOENT) | |
133 | return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; | |
134 | ||
135 | return bus_send_error_reply(m, message, NULL, r); | |
136 | } | |
137 | ||
138 | return bus_job_message_dispatch(j, message); | |
ea430986 LP |
139 | } |
140 | ||
141 | const DBusObjectPathVTable bus_job_vtable = { | |
142 | .message_function = bus_job_message_handler | |
143 | }; | |
c1e1601e LP |
144 | |
145 | void bus_job_send_change_signal(Job *j) { | |
146 | char *p = NULL; | |
147 | DBusMessage *m = NULL; | |
148 | ||
149 | assert(j); | |
150 | assert(j->in_dbus_queue); | |
151 | ||
152 | LIST_REMOVE(Job, dbus_queue, j->manager->dbus_job_queue, j); | |
153 | j->in_dbus_queue = false; | |
154 | ||
155 | if (set_isempty(j->manager->subscribed)) | |
156 | return; | |
157 | ||
158 | if (!(p = job_dbus_path(j))) | |
159 | goto oom; | |
160 | ||
161 | if (j->sent_dbus_new_signal) { | |
162 | /* Send a change signal */ | |
163 | ||
164 | if (!(m = dbus_message_new_signal(p, "org.freedesktop.systemd1.Job", "Changed"))) | |
165 | goto oom; | |
166 | } else { | |
167 | /* Send a new signal */ | |
168 | ||
169 | if (!(m = dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1", "JobNew"))) | |
170 | goto oom; | |
171 | ||
172 | if (!dbus_message_append_args(m, | |
173 | DBUS_TYPE_UINT32, &j->id, | |
174 | DBUS_TYPE_OBJECT_PATH, &p, | |
175 | DBUS_TYPE_INVALID)) | |
176 | goto oom; | |
177 | } | |
178 | ||
f278026d | 179 | if (!dbus_connection_send(j->manager->api_bus, m, NULL)) |
c1e1601e LP |
180 | goto oom; |
181 | ||
182 | free(p); | |
183 | dbus_message_unref(m); | |
184 | ||
185 | j->sent_dbus_new_signal = true; | |
186 | ||
187 | return; | |
188 | ||
189 | oom: | |
190 | free(p); | |
191 | ||
192 | if (m) | |
193 | dbus_message_unref(m); | |
194 | ||
195 | log_error("Failed to allocate job change signal."); | |
196 | } | |
197 | ||
198 | void bus_job_send_removed_signal(Job *j) { | |
199 | char *p = NULL; | |
200 | DBusMessage *m = NULL; | |
201 | ||
202 | assert(j); | |
203 | ||
204 | if (set_isempty(j->manager->subscribed) || !j->sent_dbus_new_signal) | |
205 | return; | |
206 | ||
207 | if (!(p = job_dbus_path(j))) | |
208 | goto oom; | |
209 | ||
210 | if (!(m = dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1", "JobRemoved"))) | |
211 | goto oom; | |
212 | ||
213 | if (!dbus_message_append_args(m, | |
214 | DBUS_TYPE_UINT32, &j->id, | |
215 | DBUS_TYPE_OBJECT_PATH, &p, | |
216 | DBUS_TYPE_INVALID)) | |
217 | goto oom; | |
218 | ||
f278026d | 219 | if (!dbus_connection_send(j->manager->api_bus, m, NULL)) |
c1e1601e LP |
220 | goto oom; |
221 | ||
222 | free(p); | |
223 | dbus_message_unref(m); | |
224 | ||
225 | return; | |
226 | ||
227 | oom: | |
228 | free(p); | |
229 | ||
230 | if (m) | |
231 | dbus_message_unref(m); | |
232 | ||
233 | log_error("Failed to allocate job remove signal."); | |
234 | } |