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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
19befb2d LP |
2 | /*** |
3 | This file is part of systemd. | |
4 | ||
5 | Copyright 2013 Lennart Poettering | |
6 | ||
7 | systemd is free software; you can redistribute it and/or modify it | |
8 | under the terms of the GNU Lesser General Public License as published by | |
9 | the Free Software Foundation; either version 2.1 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | systemd is distributed in the hope that it will be useful, but | |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | Lesser General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU Lesser General Public License | |
18 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
19 | ***/ | |
20 | ||
21 | #include "sd-bus.h" | |
07630cea | 22 | |
b5efdb8a | 23 | #include "alloc-util.h" |
19befb2d LP |
24 | #include "bus-control.h" |
25 | #include "bus-objects.h" | |
26 | #include "bus-slot.h" | |
cf0fbc49 | 27 | #include "string-util.h" |
19befb2d LP |
28 | |
29 | sd_bus_slot *bus_slot_allocate( | |
30 | sd_bus *bus, | |
31 | bool floating, | |
32 | BusSlotType type, | |
33 | size_t extra, | |
34 | void *userdata) { | |
35 | ||
36 | sd_bus_slot *slot; | |
37 | ||
38 | assert(bus); | |
39 | ||
40 | slot = malloc0(offsetof(sd_bus_slot, reply_callback) + extra); | |
41 | if (!slot) | |
42 | return NULL; | |
43 | ||
44 | slot->n_ref = 1; | |
45 | slot->type = type; | |
46 | slot->bus = bus; | |
47 | slot->floating = floating; | |
48 | slot->userdata = userdata; | |
49 | ||
50 | if (!floating) | |
51 | sd_bus_ref(bus); | |
52 | ||
53 | LIST_PREPEND(slots, bus->slots, slot); | |
54 | ||
55 | return slot; | |
56 | } | |
57 | ||
58 | _public_ sd_bus_slot* sd_bus_slot_ref(sd_bus_slot *slot) { | |
4afd3348 LP |
59 | |
60 | if (!slot) | |
61 | return NULL; | |
19befb2d LP |
62 | |
63 | assert(slot->n_ref > 0); | |
64 | ||
65 | slot->n_ref++; | |
66 | return slot; | |
67 | } | |
68 | ||
69 | void bus_slot_disconnect(sd_bus_slot *slot) { | |
70 | sd_bus *bus; | |
71 | ||
72 | assert(slot); | |
73 | ||
a71fe8b8 | 74 | if (!slot->bus) |
19befb2d LP |
75 | return; |
76 | ||
a71fe8b8 LP |
77 | switch (slot->type) { |
78 | ||
19befb2d LP |
79 | case BUS_REPLY_CALLBACK: |
80 | ||
81 | if (slot->reply_callback.cookie != 0) | |
c9fe4af7 | 82 | ordered_hashmap_remove(slot->bus->reply_callbacks, &slot->reply_callback.cookie); |
19befb2d LP |
83 | |
84 | if (slot->reply_callback.timeout != 0) | |
85 | prioq_remove(slot->bus->reply_callbacks_prioq, &slot->reply_callback, &slot->reply_callback.prioq_idx); | |
86 | ||
87 | break; | |
88 | ||
89 | case BUS_FILTER_CALLBACK: | |
90 | slot->bus->filter_callbacks_modified = true; | |
91 | LIST_REMOVE(callbacks, slot->bus->filter_callbacks, &slot->filter_callback); | |
92 | break; | |
93 | ||
94 | case BUS_MATCH_CALLBACK: | |
95 | ||
cc65fe5e | 96 | if (slot->match_added) |
532f808f | 97 | bus_remove_match_internal(slot->bus, slot->match_callback.match_string); |
19befb2d LP |
98 | |
99 | slot->bus->match_callbacks_modified = true; | |
100 | bus_match_remove(&slot->bus->match_callbacks, &slot->match_callback); | |
101 | ||
102 | free(slot->match_callback.match_string); | |
103 | ||
104 | break; | |
105 | ||
106 | case BUS_NODE_CALLBACK: | |
107 | ||
108 | if (slot->node_callback.node) { | |
109 | LIST_REMOVE(callbacks, slot->node_callback.node->callbacks, &slot->node_callback); | |
110 | slot->bus->nodes_modified = true; | |
111 | ||
112 | bus_node_gc(slot->bus, slot->node_callback.node); | |
113 | } | |
114 | ||
115 | break; | |
116 | ||
117 | case BUS_NODE_ENUMERATOR: | |
118 | ||
119 | if (slot->node_enumerator.node) { | |
120 | LIST_REMOVE(enumerators, slot->node_enumerator.node->enumerators, &slot->node_enumerator); | |
121 | slot->bus->nodes_modified = true; | |
122 | ||
123 | bus_node_gc(slot->bus, slot->node_enumerator.node); | |
124 | } | |
125 | ||
126 | break; | |
127 | ||
128 | case BUS_NODE_OBJECT_MANAGER: | |
129 | ||
130 | if (slot->node_object_manager.node) { | |
131 | LIST_REMOVE(object_managers, slot->node_object_manager.node->object_managers, &slot->node_object_manager); | |
132 | slot->bus->nodes_modified = true; | |
133 | ||
134 | bus_node_gc(slot->bus, slot->node_object_manager.node); | |
135 | } | |
136 | ||
137 | break; | |
138 | ||
139 | case BUS_NODE_VTABLE: | |
140 | ||
141 | if (slot->node_vtable.node && slot->node_vtable.interface && slot->node_vtable.vtable) { | |
142 | const sd_bus_vtable *v; | |
143 | ||
144 | for (v = slot->node_vtable.vtable; v->type != _SD_BUS_VTABLE_END; v++) { | |
145 | struct vtable_member *x = NULL; | |
146 | ||
147 | switch (v->type) { | |
148 | ||
149 | case _SD_BUS_VTABLE_METHOD: { | |
150 | struct vtable_member key; | |
151 | ||
152 | key.path = slot->node_vtable.node->path; | |
153 | key.interface = slot->node_vtable.interface; | |
154 | key.member = v->x.method.member; | |
155 | ||
156 | x = hashmap_remove(slot->bus->vtable_methods, &key); | |
157 | break; | |
158 | } | |
159 | ||
160 | case _SD_BUS_VTABLE_PROPERTY: | |
161 | case _SD_BUS_VTABLE_WRITABLE_PROPERTY: { | |
162 | struct vtable_member key; | |
163 | ||
164 | key.path = slot->node_vtable.node->path; | |
165 | key.interface = slot->node_vtable.interface; | |
166 | key.member = v->x.method.member; | |
167 | ||
168 | ||
169 | x = hashmap_remove(slot->bus->vtable_properties, &key); | |
170 | break; | |
171 | }} | |
172 | ||
173 | free(x); | |
174 | } | |
175 | } | |
176 | ||
177 | free(slot->node_vtable.interface); | |
178 | ||
179 | if (slot->node_vtable.node) { | |
180 | LIST_REMOVE(vtables, slot->node_vtable.node->vtables, &slot->node_vtable); | |
181 | slot->bus->nodes_modified = true; | |
182 | ||
183 | bus_node_gc(slot->bus, slot->node_vtable.node); | |
184 | } | |
185 | ||
186 | break; | |
a71fe8b8 LP |
187 | |
188 | default: | |
189 | assert_not_reached("Wut? Unknown slot type?"); | |
19befb2d | 190 | } |
a71fe8b8 | 191 | |
19befb2d LP |
192 | bus = slot->bus; |
193 | ||
a71fe8b8 | 194 | slot->type = _BUS_SLOT_INVALID; |
19befb2d LP |
195 | slot->bus = NULL; |
196 | LIST_REMOVE(slots, bus->slots, slot); | |
197 | ||
198 | if (!slot->floating) | |
199 | sd_bus_unref(bus); | |
200 | } | |
201 | ||
202 | _public_ sd_bus_slot* sd_bus_slot_unref(sd_bus_slot *slot) { | |
203 | ||
204 | if (!slot) | |
205 | return NULL; | |
206 | ||
207 | assert(slot->n_ref > 0); | |
208 | ||
209 | if (slot->n_ref > 1) { | |
313cefa1 | 210 | slot->n_ref--; |
19befb2d LP |
211 | return NULL; |
212 | } | |
213 | ||
214 | bus_slot_disconnect(slot); | |
9cbfc66c | 215 | free(slot->description); |
6b430fdb | 216 | return mfree(slot); |
19befb2d LP |
217 | } |
218 | ||
219 | _public_ sd_bus* sd_bus_slot_get_bus(sd_bus_slot *slot) { | |
220 | assert_return(slot, NULL); | |
221 | ||
222 | return slot->bus; | |
223 | } | |
224 | ||
225 | _public_ void *sd_bus_slot_get_userdata(sd_bus_slot *slot) { | |
226 | assert_return(slot, NULL); | |
227 | ||
228 | return slot->userdata; | |
229 | } | |
230 | ||
231 | _public_ void *sd_bus_slot_set_userdata(sd_bus_slot *slot, void *userdata) { | |
232 | void *ret; | |
233 | ||
234 | assert_return(slot, NULL); | |
235 | ||
236 | ret = slot->userdata; | |
237 | slot->userdata = userdata; | |
238 | ||
239 | return ret; | |
240 | } | |
241 | ||
242 | _public_ sd_bus_message *sd_bus_slot_get_current_message(sd_bus_slot *slot) { | |
243 | assert_return(slot, NULL); | |
a71fe8b8 | 244 | assert_return(slot->type >= 0, NULL); |
19befb2d LP |
245 | |
246 | if (slot->bus->current_slot != slot) | |
247 | return NULL; | |
248 | ||
249 | return slot->bus->current_message; | |
250 | } | |
caa82984 LP |
251 | |
252 | _public_ sd_bus_message_handler_t sd_bus_slot_get_current_handler(sd_bus_slot *slot) { | |
253 | assert_return(slot, NULL); | |
254 | assert_return(slot->type >= 0, NULL); | |
255 | ||
256 | if (slot->bus->current_slot != slot) | |
257 | return NULL; | |
258 | ||
259 | return slot->bus->current_handler; | |
260 | } | |
261 | ||
262 | _public_ void* sd_bus_slot_get_current_userdata(sd_bus_slot *slot) { | |
263 | assert_return(slot, NULL); | |
264 | assert_return(slot->type >= 0, NULL); | |
265 | ||
266 | if (slot->bus->current_slot != slot) | |
267 | return NULL; | |
268 | ||
269 | return slot->bus->current_userdata; | |
270 | } | |
9cbfc66c LP |
271 | |
272 | _public_ int sd_bus_slot_set_description(sd_bus_slot *slot, const char *description) { | |
273 | assert_return(slot, -EINVAL); | |
274 | ||
275 | return free_and_strdup(&slot->description, description); | |
276 | } | |
277 | ||
839b6dbb | 278 | _public_ int sd_bus_slot_get_description(sd_bus_slot *slot, const char **description) { |
9cbfc66c LP |
279 | assert_return(slot, -EINVAL); |
280 | assert_return(description, -EINVAL); | |
281 | assert_return(slot->description, -ENXIO); | |
282 | ||
283 | *description = slot->description; | |
284 | return 0; | |
285 | } |