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60f067b4 JS |
1 | /*** |
2 | This file is part of systemd. | |
3 | ||
4 | Copyright 2013 Lennart Poettering | |
5 | ||
6 | systemd is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU Lesser General Public License as published by | |
8 | the Free Software Foundation; either version 2.1 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | systemd is distributed in the hope that it will be useful, but | |
12 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public License | |
17 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
18 | ***/ | |
19 | ||
20 | #include "sd-bus.h" | |
db2df898 MP |
21 | |
22 | #include "alloc-util.h" | |
60f067b4 JS |
23 | #include "bus-control.h" |
24 | #include "bus-objects.h" | |
25 | #include "bus-slot.h" | |
db2df898 | 26 | #include "string-util.h" |
60f067b4 JS |
27 | |
28 | sd_bus_slot *bus_slot_allocate( | |
29 | sd_bus *bus, | |
30 | bool floating, | |
31 | BusSlotType type, | |
32 | size_t extra, | |
33 | void *userdata) { | |
34 | ||
35 | sd_bus_slot *slot; | |
36 | ||
37 | assert(bus); | |
38 | ||
39 | slot = malloc0(offsetof(sd_bus_slot, reply_callback) + extra); | |
40 | if (!slot) | |
41 | return NULL; | |
42 | ||
43 | slot->n_ref = 1; | |
44 | slot->type = type; | |
45 | slot->bus = bus; | |
46 | slot->floating = floating; | |
47 | slot->userdata = userdata; | |
48 | ||
49 | if (!floating) | |
50 | sd_bus_ref(bus); | |
51 | ||
52 | LIST_PREPEND(slots, bus->slots, slot); | |
53 | ||
54 | return slot; | |
55 | } | |
56 | ||
57 | _public_ sd_bus_slot* sd_bus_slot_ref(sd_bus_slot *slot) { | |
4c89c718 MP |
58 | |
59 | if (!slot) | |
60 | return NULL; | |
60f067b4 JS |
61 | |
62 | assert(slot->n_ref > 0); | |
63 | ||
64 | slot->n_ref++; | |
65 | return slot; | |
66 | } | |
67 | ||
68 | void bus_slot_disconnect(sd_bus_slot *slot) { | |
69 | sd_bus *bus; | |
70 | ||
71 | assert(slot); | |
72 | ||
73 | if (!slot->bus) | |
74 | return; | |
75 | ||
76 | switch (slot->type) { | |
77 | ||
78 | case BUS_REPLY_CALLBACK: | |
79 | ||
80 | if (slot->reply_callback.cookie != 0) | |
5eef597e | 81 | ordered_hashmap_remove(slot->bus->reply_callbacks, &slot->reply_callback.cookie); |
60f067b4 JS |
82 | |
83 | if (slot->reply_callback.timeout != 0) | |
84 | prioq_remove(slot->bus->reply_callbacks_prioq, &slot->reply_callback, &slot->reply_callback.prioq_idx); | |
85 | ||
86 | break; | |
87 | ||
88 | case BUS_FILTER_CALLBACK: | |
89 | slot->bus->filter_callbacks_modified = true; | |
90 | LIST_REMOVE(callbacks, slot->bus->filter_callbacks, &slot->filter_callback); | |
91 | break; | |
92 | ||
93 | case BUS_MATCH_CALLBACK: | |
94 | ||
86f210e9 | 95 | if (slot->match_added) |
60f067b4 JS |
96 | bus_remove_match_internal(slot->bus, slot->match_callback.match_string, slot->match_callback.cookie); |
97 | ||
98 | slot->bus->match_callbacks_modified = true; | |
99 | bus_match_remove(&slot->bus->match_callbacks, &slot->match_callback); | |
100 | ||
101 | free(slot->match_callback.match_string); | |
102 | ||
103 | break; | |
104 | ||
105 | case BUS_NODE_CALLBACK: | |
106 | ||
107 | if (slot->node_callback.node) { | |
108 | LIST_REMOVE(callbacks, slot->node_callback.node->callbacks, &slot->node_callback); | |
109 | slot->bus->nodes_modified = true; | |
110 | ||
111 | bus_node_gc(slot->bus, slot->node_callback.node); | |
112 | } | |
113 | ||
114 | break; | |
115 | ||
116 | case BUS_NODE_ENUMERATOR: | |
117 | ||
118 | if (slot->node_enumerator.node) { | |
119 | LIST_REMOVE(enumerators, slot->node_enumerator.node->enumerators, &slot->node_enumerator); | |
120 | slot->bus->nodes_modified = true; | |
121 | ||
122 | bus_node_gc(slot->bus, slot->node_enumerator.node); | |
123 | } | |
124 | ||
125 | break; | |
126 | ||
127 | case BUS_NODE_OBJECT_MANAGER: | |
128 | ||
129 | if (slot->node_object_manager.node) { | |
130 | LIST_REMOVE(object_managers, slot->node_object_manager.node->object_managers, &slot->node_object_manager); | |
131 | slot->bus->nodes_modified = true; | |
132 | ||
133 | bus_node_gc(slot->bus, slot->node_object_manager.node); | |
134 | } | |
135 | ||
136 | break; | |
137 | ||
138 | case BUS_NODE_VTABLE: | |
139 | ||
140 | if (slot->node_vtable.node && slot->node_vtable.interface && slot->node_vtable.vtable) { | |
141 | const sd_bus_vtable *v; | |
142 | ||
143 | for (v = slot->node_vtable.vtable; v->type != _SD_BUS_VTABLE_END; v++) { | |
144 | struct vtable_member *x = NULL; | |
145 | ||
146 | switch (v->type) { | |
147 | ||
148 | case _SD_BUS_VTABLE_METHOD: { | |
149 | struct vtable_member key; | |
150 | ||
151 | key.path = slot->node_vtable.node->path; | |
152 | key.interface = slot->node_vtable.interface; | |
153 | key.member = v->x.method.member; | |
154 | ||
155 | x = hashmap_remove(slot->bus->vtable_methods, &key); | |
156 | break; | |
157 | } | |
158 | ||
159 | case _SD_BUS_VTABLE_PROPERTY: | |
160 | case _SD_BUS_VTABLE_WRITABLE_PROPERTY: { | |
161 | struct vtable_member key; | |
162 | ||
163 | key.path = slot->node_vtable.node->path; | |
164 | key.interface = slot->node_vtable.interface; | |
165 | key.member = v->x.method.member; | |
166 | ||
167 | ||
168 | x = hashmap_remove(slot->bus->vtable_properties, &key); | |
169 | break; | |
170 | }} | |
171 | ||
172 | free(x); | |
173 | } | |
174 | } | |
175 | ||
176 | free(slot->node_vtable.interface); | |
177 | ||
178 | if (slot->node_vtable.node) { | |
179 | LIST_REMOVE(vtables, slot->node_vtable.node->vtables, &slot->node_vtable); | |
180 | slot->bus->nodes_modified = true; | |
181 | ||
182 | bus_node_gc(slot->bus, slot->node_vtable.node); | |
183 | } | |
184 | ||
185 | break; | |
186 | ||
187 | default: | |
188 | assert_not_reached("Wut? Unknown slot type?"); | |
189 | } | |
190 | ||
191 | bus = slot->bus; | |
192 | ||
193 | slot->type = _BUS_SLOT_INVALID; | |
194 | slot->bus = NULL; | |
195 | LIST_REMOVE(slots, bus->slots, slot); | |
196 | ||
197 | if (!slot->floating) | |
198 | sd_bus_unref(bus); | |
199 | } | |
200 | ||
201 | _public_ sd_bus_slot* sd_bus_slot_unref(sd_bus_slot *slot) { | |
202 | ||
203 | if (!slot) | |
204 | return NULL; | |
205 | ||
206 | assert(slot->n_ref > 0); | |
207 | ||
208 | if (slot->n_ref > 1) { | |
209 | slot->n_ref --; | |
210 | return NULL; | |
211 | } | |
212 | ||
213 | bus_slot_disconnect(slot); | |
f47781d8 | 214 | free(slot->description); |
60f067b4 JS |
215 | free(slot); |
216 | ||
217 | return NULL; | |
218 | } | |
219 | ||
220 | _public_ sd_bus* sd_bus_slot_get_bus(sd_bus_slot *slot) { | |
221 | assert_return(slot, NULL); | |
222 | ||
223 | return slot->bus; | |
224 | } | |
225 | ||
226 | _public_ void *sd_bus_slot_get_userdata(sd_bus_slot *slot) { | |
227 | assert_return(slot, NULL); | |
228 | ||
229 | return slot->userdata; | |
230 | } | |
231 | ||
232 | _public_ void *sd_bus_slot_set_userdata(sd_bus_slot *slot, void *userdata) { | |
233 | void *ret; | |
234 | ||
235 | assert_return(slot, NULL); | |
236 | ||
237 | ret = slot->userdata; | |
238 | slot->userdata = userdata; | |
239 | ||
240 | return ret; | |
241 | } | |
242 | ||
243 | _public_ sd_bus_message *sd_bus_slot_get_current_message(sd_bus_slot *slot) { | |
244 | assert_return(slot, NULL); | |
245 | assert_return(slot->type >= 0, NULL); | |
246 | ||
247 | if (slot->bus->current_slot != slot) | |
248 | return NULL; | |
249 | ||
250 | return slot->bus->current_message; | |
251 | } | |
5eef597e MP |
252 | |
253 | _public_ sd_bus_message_handler_t sd_bus_slot_get_current_handler(sd_bus_slot *slot) { | |
254 | assert_return(slot, NULL); | |
255 | assert_return(slot->type >= 0, NULL); | |
256 | ||
257 | if (slot->bus->current_slot != slot) | |
258 | return NULL; | |
259 | ||
260 | return slot->bus->current_handler; | |
261 | } | |
262 | ||
263 | _public_ void* sd_bus_slot_get_current_userdata(sd_bus_slot *slot) { | |
264 | assert_return(slot, NULL); | |
265 | assert_return(slot->type >= 0, NULL); | |
266 | ||
267 | if (slot->bus->current_slot != slot) | |
268 | return NULL; | |
269 | ||
270 | return slot->bus->current_userdata; | |
271 | } | |
f47781d8 MP |
272 | |
273 | _public_ int sd_bus_slot_set_description(sd_bus_slot *slot, const char *description) { | |
274 | assert_return(slot, -EINVAL); | |
275 | ||
276 | return free_and_strdup(&slot->description, description); | |
277 | } | |
278 | ||
7035cd9e | 279 | _public_ int sd_bus_slot_get_description(sd_bus_slot *slot, const char **description) { |
f47781d8 MP |
280 | assert_return(slot, -EINVAL); |
281 | assert_return(description, -EINVAL); | |
282 | assert_return(slot->description, -ENXIO); | |
283 | ||
284 | *description = slot->description; | |
285 | return 0; | |
286 | } |