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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
de1c301e LP |
2 | |
3 | #include <endian.h> | |
de1c301e | 4 | #include <netdb.h> |
0a6f50c0 | 5 | #include <poll.h> |
45fbe937 | 6 | #include <pthread.h> |
392cf1d0 | 7 | #include <signal.h> |
cf0fbc49 TA |
8 | #include <stdlib.h> |
9 | #include <sys/mman.h> | |
392cf1d0 | 10 | #include <sys/wait.h> |
cf0fbc49 | 11 | #include <unistd.h> |
de1c301e | 12 | |
de1c301e | 13 | #include "sd-bus.h" |
07630cea | 14 | |
b5efdb8a | 15 | #include "alloc-util.h" |
07630cea LP |
16 | #include "bus-container.h" |
17 | #include "bus-control.h" | |
de1c301e | 18 | #include "bus-internal.h" |
6629161f | 19 | #include "bus-kernel.h" |
07630cea LP |
20 | #include "bus-label.h" |
21 | #include "bus-message.h" | |
992c052c | 22 | #include "bus-objects.h" |
0461f8cd | 23 | #include "bus-protocol.h" |
19befb2d | 24 | #include "bus-slot.h" |
07630cea LP |
25 | #include "bus-socket.h" |
26 | #include "bus-track.h" | |
27 | #include "bus-type.h" | |
28 | #include "bus-util.h" | |
29 | #include "cgroup-util.h" | |
30 | #include "def.h" | |
f60a028a | 31 | #include "errno-util.h" |
3ffd4af2 | 32 | #include "fd-util.h" |
cf0fbc49 | 33 | #include "hexdecoct.h" |
07630cea LP |
34 | #include "hostname-util.h" |
35 | #include "macro.h" | |
0a970718 | 36 | #include "memory-util.h" |
07630cea | 37 | #include "missing.h" |
6bedfcbb | 38 | #include "parse-util.h" |
657ee2d8 | 39 | #include "path-util.h" |
dccca82b | 40 | #include "process-util.h" |
07630cea LP |
41 | #include "string-util.h" |
42 | #include "strv.h" | |
de1c301e | 43 | |
b56c4604 LP |
44 | #define log_debug_bus_message(m) \ |
45 | do { \ | |
46 | sd_bus_message *_mm = (m); \ | |
e32fd6b4 | 47 | log_debug("Got message type=%s sender=%s destination=%s path=%s interface=%s member=%s cookie=%" PRIu64 " reply_cookie=%" PRIu64 " signature=%s error-name=%s error-message=%s", \ |
b56c4604 LP |
48 | bus_message_type_to_string(_mm->header->type), \ |
49 | strna(sd_bus_message_get_sender(_mm)), \ | |
50 | strna(sd_bus_message_get_destination(_mm)), \ | |
51 | strna(sd_bus_message_get_path(_mm)), \ | |
52 | strna(sd_bus_message_get_interface(_mm)), \ | |
53 | strna(sd_bus_message_get_member(_mm)), \ | |
54 | BUS_MESSAGE_COOKIE(_mm), \ | |
55 | _mm->reply_cookie, \ | |
e32fd6b4 | 56 | strna(_mm->root_container.signature), \ |
e28d0865 | 57 | strna(_mm->error.name), \ |
b56c4604 LP |
58 | strna(_mm->error.message)); \ |
59 | } while (false) | |
f9f97ca6 | 60 | |
e3017af9 | 61 | static int bus_poll(sd_bus *bus, bool need_more, uint64_t timeout_usec); |
8a5cd31e LP |
62 | static void bus_detach_io_events(sd_bus *b); |
63 | static void bus_detach_inotify_event(sd_bus *b); | |
e3017af9 | 64 | |
fa2f8973 LP |
65 | static thread_local sd_bus *default_system_bus = NULL; |
66 | static thread_local sd_bus *default_user_bus = NULL; | |
67 | static thread_local sd_bus *default_starter_bus = NULL; | |
68 | ||
45b1f410 NM |
69 | static sd_bus **bus_choose_default(int (**bus_open)(sd_bus **)) { |
70 | const char *e; | |
71 | ||
72 | /* Let's try our best to reuse another cached connection. If | |
73 | * the starter bus type is set, connect via our normal | |
74 | * connection logic, ignoring $DBUS_STARTER_ADDRESS, so that | |
75 | * we can share the connection with the user/system default | |
76 | * bus. */ | |
77 | ||
78 | e = secure_getenv("DBUS_STARTER_BUS_TYPE"); | |
79 | if (e) { | |
80 | if (streq(e, "system")) { | |
81 | if (bus_open) | |
82 | *bus_open = sd_bus_open_system; | |
83 | return &default_system_bus; | |
84 | } else if (STR_IN_SET(e, "user", "session")) { | |
85 | if (bus_open) | |
86 | *bus_open = sd_bus_open_user; | |
87 | return &default_user_bus; | |
88 | } | |
89 | } | |
90 | ||
91 | /* No type is specified, so we have not other option than to | |
92 | * use the starter address if it is set. */ | |
93 | e = secure_getenv("DBUS_STARTER_ADDRESS"); | |
94 | if (e) { | |
95 | if (bus_open) | |
96 | *bus_open = sd_bus_open; | |
97 | return &default_starter_bus; | |
98 | } | |
99 | ||
100 | /* Finally, if nothing is set use the cached connection for | |
101 | * the right scope */ | |
102 | ||
103 | if (cg_pid_get_owner_uid(0, NULL) >= 0) { | |
104 | if (bus_open) | |
105 | *bus_open = sd_bus_open_user; | |
106 | return &default_user_bus; | |
107 | } else { | |
108 | if (bus_open) | |
109 | *bus_open = sd_bus_open_system; | |
110 | return &default_system_bus; | |
111 | } | |
112 | } | |
113 | ||
114 | sd_bus *bus_resolve(sd_bus *bus) { | |
115 | switch ((uintptr_t) bus) { | |
116 | case (uintptr_t) SD_BUS_DEFAULT: | |
117 | return *(bus_choose_default(NULL)); | |
118 | case (uintptr_t) SD_BUS_DEFAULT_USER: | |
119 | return default_user_bus; | |
120 | case (uintptr_t) SD_BUS_DEFAULT_SYSTEM: | |
121 | return default_system_bus; | |
122 | default: | |
123 | return bus; | |
124 | } | |
125 | } | |
126 | ||
8a5cd31e | 127 | void bus_close_io_fds(sd_bus *b) { |
f54514f3 LP |
128 | assert(b); |
129 | ||
8a5cd31e | 130 | bus_detach_io_events(b); |
1e05d493 | 131 | |
0fd8d506 | 132 | if (b->input_fd != b->output_fd) |
03e334a1 | 133 | safe_close(b->output_fd); |
0fd8d506 | 134 | b->output_fd = b->input_fd = safe_close(b->input_fd); |
f54514f3 LP |
135 | } |
136 | ||
8a5cd31e LP |
137 | void bus_close_inotify_fd(sd_bus *b) { |
138 | assert(b); | |
139 | ||
140 | bus_detach_inotify_event(b); | |
141 | ||
142 | b->inotify_fd = safe_close(b->inotify_fd); | |
143 | b->inotify_watches = mfree(b->inotify_watches); | |
144 | b->n_inotify_watches = 0; | |
145 | } | |
146 | ||
0e586eae | 147 | static void bus_reset_queues(sd_bus *b) { |
0e586eae LP |
148 | assert(b); |
149 | ||
f389bf15 | 150 | while (b->rqueue_size > 0) |
c1757a70 | 151 | bus_message_unref_queued(b->rqueue[--b->rqueue_size], b); |
f389bf15 | 152 | |
253f96e5 | 153 | b->rqueue = mfree(b->rqueue); |
f389bf15 | 154 | b->rqueue_allocated = 0; |
0e586eae | 155 | |
f389bf15 | 156 | while (b->wqueue_size > 0) |
c1757a70 | 157 | bus_message_unref_queued(b->wqueue[--b->wqueue_size], b); |
0e586eae | 158 | |
253f96e5 | 159 | b->wqueue = mfree(b->wqueue); |
f389bf15 | 160 | b->wqueue_allocated = 0; |
0e586eae LP |
161 | } |
162 | ||
9df088f1 | 163 | static sd_bus* bus_free(sd_bus *b) { |
19befb2d | 164 | sd_bus_slot *s; |
de1c301e LP |
165 | |
166 | assert(b); | |
8f8f05a9 | 167 | assert(!b->track_queue); |
232f3677 | 168 | assert(!b->tracks); |
8f8f05a9 | 169 | |
19befb2d LP |
170 | b->state = BUS_CLOSED; |
171 | ||
40ca29a1 LP |
172 | sd_bus_detach_event(b); |
173 | ||
19befb2d LP |
174 | while ((s = b->slots)) { |
175 | /* At this point only floating slots can still be | |
176 | * around, because the non-floating ones keep a | |
177 | * reference to the bus, and we thus couldn't be | |
178 | * destructing right now... We forcibly disconnect the | |
179 | * slots here, so that they still can be referenced by | |
180 | * apps, but are dead. */ | |
181 | ||
182 | assert(s->floating); | |
2e7e8e34 | 183 | bus_slot_disconnect(s, true); |
19befb2d LP |
184 | } |
185 | ||
f4d140e9 LP |
186 | if (b->default_bus_ptr) |
187 | *b->default_bus_ptr = NULL; | |
188 | ||
8a5cd31e LP |
189 | bus_close_io_fds(b); |
190 | bus_close_inotify_fd(b); | |
de1c301e | 191 | |
c4e6556c | 192 | free(b->label); |
18ac4643 | 193 | free(b->groups); |
de1c301e | 194 | free(b->rbuffer); |
89ffcd2a | 195 | free(b->unique_name); |
2181a7f5 | 196 | free(b->auth_buffer); |
89ffcd2a | 197 | free(b->address); |
a7893c6b | 198 | free(b->machine); |
455971c1 | 199 | free(b->description); |
48ef41a3 | 200 | free(b->patch_sender); |
89ffcd2a | 201 | |
2fd9ae2e LP |
202 | free(b->exec_path); |
203 | strv_free(b->exec_argv); | |
204 | ||
2c93b4ef LP |
205 | close_many(b->fds, b->n_fds); |
206 | free(b->fds); | |
207 | ||
0e586eae | 208 | bus_reset_queues(b); |
de1c301e | 209 | |
c9fe4af7 | 210 | ordered_hashmap_free_free(b->reply_callbacks); |
e3017af9 | 211 | prioq_free(b->reply_callbacks_prioq); |
de1c301e | 212 | |
75a0da95 | 213 | assert(b->match_callbacks.type == BUS_MATCH_ROOT); |
392d5b37 LP |
214 | bus_match_free(&b->match_callbacks); |
215 | ||
29ddb38f LP |
216 | hashmap_free_free(b->vtable_methods); |
217 | hashmap_free_free(b->vtable_properties); | |
218 | ||
19befb2d | 219 | assert(hashmap_isempty(b->nodes)); |
29ddb38f LP |
220 | hashmap_free(b->nodes); |
221 | ||
a132bef0 | 222 | bus_flush_memfd(b); |
bc7fd8cd | 223 | |
45fbe937 LP |
224 | assert_se(pthread_mutex_destroy(&b->memfd_cache_mutex) == 0); |
225 | ||
9df088f1 | 226 | return mfree(b); |
de1c301e LP |
227 | } |
228 | ||
9df088f1 ZJS |
229 | DEFINE_TRIVIAL_CLEANUP_FUNC(sd_bus*, bus_free); |
230 | ||
d9f644e2 | 231 | _public_ int sd_bus_new(sd_bus **ret) { |
01c4dcaf | 232 | _cleanup_free_ sd_bus *b = NULL; |
de1c301e | 233 | |
d6888822 | 234 | assert_return(ret, -EINVAL); |
021a1e78 | 235 | |
c4e48030 | 236 | b = new(sd_bus, 1); |
01c4dcaf | 237 | if (!b) |
021a1e78 | 238 | return -ENOMEM; |
de1c301e | 239 | |
c4e48030 | 240 | *b = (sd_bus) { |
42541a71 | 241 | .n_ref = 1, |
c4e48030 LP |
242 | .input_fd = -1, |
243 | .output_fd = -1, | |
244 | .inotify_fd = -1, | |
245 | .message_version = 1, | |
246 | .creds_mask = SD_BUS_CREDS_WELL_KNOWN_NAMES|SD_BUS_CREDS_UNIQUE_NAME, | |
247 | .accept_fd = true, | |
248 | .original_pid = getpid_cached(), | |
249 | .n_groups = (size_t) -1, | |
250 | .close_on_exit = true, | |
251 | }; | |
01c4dcaf | 252 | |
01c4dcaf ZJS |
253 | /* We guarantee that wqueue always has space for at least one entry */ |
254 | if (!GREEDY_REALLOC(b->wqueue, b->wqueue_allocated, 1)) | |
021a1e78 | 255 | return -ENOMEM; |
de1c301e | 256 | |
2fe9a10d LP |
257 | assert_se(pthread_mutex_init(&b->memfd_cache_mutex, NULL) == 0); |
258 | ||
01c4dcaf | 259 | *ret = TAKE_PTR(b); |
021a1e78 LP |
260 | return 0; |
261 | } | |
262 | ||
d9f644e2 | 263 | _public_ int sd_bus_set_address(sd_bus *bus, const char *address) { |
d6888822 | 264 | assert_return(bus, -EINVAL); |
45b1f410 | 265 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 LP |
266 | assert_return(bus->state == BUS_UNSET, -EPERM); |
267 | assert_return(address, -EINVAL); | |
268 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
021a1e78 | 269 | |
1ab436e3 | 270 | return free_and_strdup(&bus->address, address); |
021a1e78 LP |
271 | } |
272 | ||
d9f644e2 | 273 | _public_ int sd_bus_set_fd(sd_bus *bus, int input_fd, int output_fd) { |
d6888822 | 274 | assert_return(bus, -EINVAL); |
45b1f410 | 275 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 | 276 | assert_return(bus->state == BUS_UNSET, -EPERM); |
8ac43fee LP |
277 | assert_return(input_fd >= 0, -EBADF); |
278 | assert_return(output_fd >= 0, -EBADF); | |
d6888822 | 279 | assert_return(!bus_pid_changed(bus), -ECHILD); |
021a1e78 | 280 | |
e82c9509 LP |
281 | bus->input_fd = input_fd; |
282 | bus->output_fd = output_fd; | |
021a1e78 LP |
283 | return 0; |
284 | } | |
285 | ||
d9f644e2 | 286 | _public_ int sd_bus_set_exec(sd_bus *bus, const char *path, char *const argv[]) { |
1ab436e3 YW |
287 | _cleanup_strv_free_ char **a = NULL; |
288 | int r; | |
2fd9ae2e | 289 | |
d6888822 | 290 | assert_return(bus, -EINVAL); |
45b1f410 | 291 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 LP |
292 | assert_return(bus->state == BUS_UNSET, -EPERM); |
293 | assert_return(path, -EINVAL); | |
294 | assert_return(!strv_isempty(argv), -EINVAL); | |
295 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
2fd9ae2e | 296 | |
2fd9ae2e | 297 | a = strv_copy(argv); |
01c4dcaf | 298 | if (!a) |
2fd9ae2e | 299 | return -ENOMEM; |
2fd9ae2e | 300 | |
1ab436e3 YW |
301 | r = free_and_strdup(&bus->exec_path, path); |
302 | if (r < 0) | |
303 | return r; | |
304 | ||
305 | return strv_free_and_replace(bus->exec_argv, a); | |
2fd9ae2e LP |
306 | } |
307 | ||
d9f644e2 | 308 | _public_ int sd_bus_set_bus_client(sd_bus *bus, int b) { |
d6888822 | 309 | assert_return(bus, -EINVAL); |
45b1f410 | 310 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 | 311 | assert_return(bus->state == BUS_UNSET, -EPERM); |
48ef41a3 | 312 | assert_return(!bus->patch_sender, -EPERM); |
d6888822 | 313 | assert_return(!bus_pid_changed(bus), -ECHILD); |
021a1e78 | 314 | |
94bbf1ba | 315 | bus->bus_client = !!b; |
021a1e78 LP |
316 | return 0; |
317 | } | |
318 | ||
09365592 LP |
319 | _public_ int sd_bus_set_monitor(sd_bus *bus, int b) { |
320 | assert_return(bus, -EINVAL); | |
45b1f410 | 321 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
09365592 LP |
322 | assert_return(bus->state == BUS_UNSET, -EPERM); |
323 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
324 | ||
e5c8029e | 325 | bus->is_monitor = !!b; |
09365592 LP |
326 | return 0; |
327 | } | |
328 | ||
d9f644e2 | 329 | _public_ int sd_bus_negotiate_fds(sd_bus *bus, int b) { |
d6888822 | 330 | assert_return(bus, -EINVAL); |
45b1f410 | 331 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 LP |
332 | assert_return(bus->state == BUS_UNSET, -EPERM); |
333 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
021a1e78 | 334 | |
e5c8029e | 335 | bus->accept_fd = !!b; |
264ad849 LP |
336 | return 0; |
337 | } | |
338 | ||
4fc31988 | 339 | _public_ int sd_bus_negotiate_timestamp(sd_bus *bus, int b) { |
16be4368 | 340 | assert_return(bus, -EINVAL); |
45b1f410 | 341 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
b5dae4c7 | 342 | assert_return(!IN_SET(bus->state, BUS_CLOSING, BUS_CLOSED), -EPERM); |
16be4368 KS |
343 | assert_return(!bus_pid_changed(bus), -ECHILD); |
344 | ||
c7db1984 LP |
345 | /* This is not actually supported by any of our transports these days, but we do honour it for synthetic |
346 | * replies, and maybe one day classic D-Bus learns this too */ | |
e5c8029e | 347 | bus->attach_timestamp = !!b; |
b5dae4c7 | 348 | |
16be4368 KS |
349 | return 0; |
350 | } | |
351 | ||
b5dae4c7 | 352 | _public_ int sd_bus_negotiate_creds(sd_bus *bus, int b, uint64_t mask) { |
16be4368 | 353 | assert_return(bus, -EINVAL); |
45b1f410 | 354 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
95c4fe82 | 355 | assert_return(mask <= _SD_BUS_CREDS_ALL, -EINVAL); |
b5dae4c7 | 356 | assert_return(!IN_SET(bus->state, BUS_CLOSING, BUS_CLOSED), -EPERM); |
16be4368 KS |
357 | assert_return(!bus_pid_changed(bus), -ECHILD); |
358 | ||
5883ff60 | 359 | SET_FLAG(bus->creds_mask, mask, b); |
b5dae4c7 | 360 | |
49b832c5 | 361 | /* The well knowns we need unconditionally, so that matches can work */ |
b5dae4c7 LP |
362 | bus->creds_mask |= SD_BUS_CREDS_WELL_KNOWN_NAMES|SD_BUS_CREDS_UNIQUE_NAME; |
363 | ||
b5dae4c7 | 364 | return 0; |
021a1e78 | 365 | } |
de1c301e | 366 | |
d9f644e2 | 367 | _public_ int sd_bus_set_server(sd_bus *bus, int b, sd_id128_t server_id) { |
d6888822 | 368 | assert_return(bus, -EINVAL); |
45b1f410 | 369 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 LP |
370 | assert_return(b || sd_id128_equal(server_id, SD_ID128_NULL), -EINVAL); |
371 | assert_return(bus->state == BUS_UNSET, -EPERM); | |
372 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
2181a7f5 LP |
373 | |
374 | bus->is_server = !!b; | |
98178d39 | 375 | bus->server_id = server_id; |
2181a7f5 LP |
376 | return 0; |
377 | } | |
378 | ||
d9f644e2 | 379 | _public_ int sd_bus_set_anonymous(sd_bus *bus, int b) { |
d6888822 | 380 | assert_return(bus, -EINVAL); |
45b1f410 | 381 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 LP |
382 | assert_return(bus->state == BUS_UNSET, -EPERM); |
383 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
2181a7f5 LP |
384 | |
385 | bus->anonymous_auth = !!b; | |
386 | return 0; | |
387 | } | |
388 | ||
adacb957 LP |
389 | _public_ int sd_bus_set_trusted(sd_bus *bus, int b) { |
390 | assert_return(bus, -EINVAL); | |
45b1f410 | 391 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
adacb957 LP |
392 | assert_return(bus->state == BUS_UNSET, -EPERM); |
393 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
394 | ||
395 | bus->trusted = !!b; | |
396 | return 0; | |
397 | } | |
398 | ||
455971c1 | 399 | _public_ int sd_bus_set_description(sd_bus *bus, const char *description) { |
5972fe95 | 400 | assert_return(bus, -EINVAL); |
45b1f410 | 401 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
5972fe95 LP |
402 | assert_return(bus->state == BUS_UNSET, -EPERM); |
403 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
404 | ||
d1b91c99 | 405 | return free_and_strdup(&bus->description, description); |
5972fe95 LP |
406 | } |
407 | ||
c0765ddb LP |
408 | _public_ int sd_bus_set_allow_interactive_authorization(sd_bus *bus, int b) { |
409 | assert_return(bus, -EINVAL); | |
45b1f410 | 410 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
c0765ddb LP |
411 | assert_return(!bus_pid_changed(bus), -ECHILD); |
412 | ||
413 | bus->allow_interactive_authorization = !!b; | |
414 | return 0; | |
415 | } | |
416 | ||
417 | _public_ int sd_bus_get_allow_interactive_authorization(sd_bus *bus) { | |
418 | assert_return(bus, -EINVAL); | |
45b1f410 | 419 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
c0765ddb LP |
420 | assert_return(!bus_pid_changed(bus), -ECHILD); |
421 | ||
422 | return bus->allow_interactive_authorization; | |
423 | } | |
424 | ||
8a5cd31e LP |
425 | _public_ int sd_bus_set_watch_bind(sd_bus *bus, int b) { |
426 | assert_return(bus, -EINVAL); | |
45b1f410 | 427 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
8a5cd31e LP |
428 | assert_return(bus->state == BUS_UNSET, -EPERM); |
429 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
430 | ||
e5c8029e | 431 | bus->watch_bind = !!b; |
8a5cd31e LP |
432 | return 0; |
433 | } | |
434 | ||
435 | _public_ int sd_bus_get_watch_bind(sd_bus *bus) { | |
436 | assert_return(bus, -EINVAL); | |
45b1f410 | 437 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
8a5cd31e LP |
438 | assert_return(!bus_pid_changed(bus), -ECHILD); |
439 | ||
440 | return bus->watch_bind; | |
441 | } | |
442 | ||
b38cc8d5 LP |
443 | _public_ int sd_bus_set_connected_signal(sd_bus *bus, int b) { |
444 | assert_return(bus, -EINVAL); | |
45b1f410 | 445 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
b38cc8d5 LP |
446 | assert_return(bus->state == BUS_UNSET, -EPERM); |
447 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
448 | ||
e5c8029e | 449 | bus->connected_signal = !!b; |
b38cc8d5 LP |
450 | return 0; |
451 | } | |
452 | ||
453 | _public_ int sd_bus_get_connected_signal(sd_bus *bus) { | |
454 | assert_return(bus, -EINVAL); | |
45b1f410 | 455 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
b38cc8d5 LP |
456 | assert_return(!bus_pid_changed(bus), -ECHILD); |
457 | ||
458 | return bus->connected_signal; | |
459 | } | |
460 | ||
461 | static int synthesize_connected_signal(sd_bus *bus) { | |
462 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; | |
463 | int r; | |
464 | ||
465 | assert(bus); | |
466 | ||
467 | /* If enabled, synthesizes a local "Connected" signal mirroring the local "Disconnected" signal. This is called | |
468 | * whenever we fully established a connection, i.e. after the authorization phase, and after receiving the | |
5238e957 | 469 | * Hello() reply. Or in other words, whenever we enter BUS_RUNNING state. |
b38cc8d5 | 470 | * |
5238e957 | 471 | * This is useful so that clients can start doing stuff whenever the connection is fully established in a way |
b38cc8d5 LP |
472 | * that works independently from whether we connected to a full bus or just a direct connection. */ |
473 | ||
474 | if (!bus->connected_signal) | |
475 | return 0; | |
476 | ||
477 | r = sd_bus_message_new_signal( | |
478 | bus, | |
479 | &m, | |
480 | "/org/freedesktop/DBus/Local", | |
481 | "org.freedesktop.DBus.Local", | |
482 | "Connected"); | |
483 | if (r < 0) | |
484 | return r; | |
485 | ||
486 | bus_message_set_sender_local(bus, m); | |
f1617a3b | 487 | m->read_counter = ++bus->read_counter; |
b38cc8d5 LP |
488 | |
489 | r = bus_seal_synthetic_message(bus, m); | |
490 | if (r < 0) | |
491 | return r; | |
492 | ||
493 | r = bus_rqueue_make_room(bus); | |
494 | if (r < 0) | |
495 | return r; | |
496 | ||
497 | /* Insert at the very front */ | |
498 | memmove(bus->rqueue + 1, bus->rqueue, sizeof(sd_bus_message*) * bus->rqueue_size); | |
c1757a70 | 499 | bus->rqueue[0] = bus_message_ref_queued(m, bus); |
b38cc8d5 LP |
500 | bus->rqueue_size++; |
501 | ||
502 | return 0; | |
503 | } | |
504 | ||
3e0e196e LP |
505 | void bus_set_state(sd_bus *bus, enum bus_state state) { |
506 | ||
507 | static const char * const table[_BUS_STATE_MAX] = { | |
508 | [BUS_UNSET] = "UNSET", | |
509 | [BUS_WATCH_BIND] = "WATCH_BIND", | |
510 | [BUS_OPENING] = "OPENING", | |
511 | [BUS_AUTHENTICATING] = "AUTHENTICATING", | |
512 | [BUS_HELLO] = "HELLO", | |
513 | [BUS_RUNNING] = "RUNNING", | |
514 | [BUS_CLOSING] = "CLOSING", | |
515 | [BUS_CLOSED] = "CLOSED", | |
516 | }; | |
517 | ||
518 | assert(bus); | |
519 | assert(state < _BUS_STATE_MAX); | |
520 | ||
521 | if (state == bus->state) | |
522 | return; | |
523 | ||
524 | log_debug("Bus %s: changing state %s → %s", strna(bus->description), table[bus->state], table[state]); | |
525 | bus->state = state; | |
526 | } | |
527 | ||
19070062 | 528 | static int hello_callback(sd_bus_message *reply, void *userdata, sd_bus_error *error) { |
de1c301e | 529 | const char *s; |
19070062 | 530 | sd_bus *bus; |
de1c301e LP |
531 | int r; |
532 | ||
19070062 LP |
533 | assert(reply); |
534 | bus = reply->bus; | |
de1c301e | 535 | assert(bus); |
945c2931 | 536 | assert(IN_SET(bus->state, BUS_HELLO, BUS_CLOSING)); |
de1c301e | 537 | |
40ca29a1 | 538 | r = sd_bus_message_get_errno(reply); |
40ca29a1 LP |
539 | if (r > 0) |
540 | return -r; | |
eb01ba5d | 541 | |
de1c301e LP |
542 | r = sd_bus_message_read(reply, "s", &s); |
543 | if (r < 0) | |
544 | return r; | |
545 | ||
dafb7591 LP |
546 | if (!service_name_is_valid(s) || s[0] != ':') |
547 | return -EBADMSG; | |
548 | ||
1ab436e3 YW |
549 | r = free_and_strdup(&bus->unique_name, s); |
550 | if (r < 0) | |
551 | return r; | |
b4ca3f45 | 552 | |
b38cc8d5 | 553 | if (bus->state == BUS_HELLO) { |
3e0e196e | 554 | bus_set_state(bus, BUS_RUNNING); |
dafb7591 | 555 | |
b38cc8d5 LP |
556 | r = synthesize_connected_signal(bus); |
557 | if (r < 0) | |
558 | return r; | |
559 | } | |
560 | ||
de1c301e LP |
561 | return 1; |
562 | } | |
563 | ||
564 | static int bus_send_hello(sd_bus *bus) { | |
4afd3348 | 565 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; |
de1c301e LP |
566 | int r; |
567 | ||
568 | assert(bus); | |
569 | ||
a132bef0 | 570 | if (!bus->bus_client) |
021a1e78 LP |
571 | return 0; |
572 | ||
de1c301e LP |
573 | r = sd_bus_message_new_method_call( |
574 | bus, | |
151b9b96 | 575 | &m, |
de1c301e | 576 | "org.freedesktop.DBus", |
a7639e37 | 577 | "/org/freedesktop/DBus", |
de1c301e | 578 | "org.freedesktop.DBus", |
151b9b96 | 579 | "Hello"); |
de1c301e LP |
580 | if (r < 0) |
581 | return r; | |
582 | ||
19befb2d | 583 | return sd_bus_call_async(bus, NULL, m, hello_callback, NULL, 0); |
de1c301e LP |
584 | } |
585 | ||
a7e3212d | 586 | int bus_start_running(sd_bus *bus) { |
ac8029fc LP |
587 | struct reply_callback *c; |
588 | Iterator i; | |
589 | usec_t n; | |
b38cc8d5 | 590 | int r; |
ac8029fc | 591 | |
de1c301e | 592 | assert(bus); |
ac8029fc LP |
593 | assert(bus->state < BUS_HELLO); |
594 | ||
595 | /* We start all method call timeouts when we enter BUS_HELLO or BUS_RUNNING mode. At this point let's convert | |
596 | * all relative to absolute timestamps. Note that we do not reshuffle the reply callback priority queue since | |
597 | * adding a fixed value to all entries should not alter the internal order. */ | |
598 | ||
599 | n = now(CLOCK_MONOTONIC); | |
600 | ORDERED_HASHMAP_FOREACH(c, bus->reply_callbacks, i) { | |
601 | if (c->timeout_usec == 0) | |
602 | continue; | |
603 | ||
604 | c->timeout_usec = usec_add(n, c->timeout_usec); | |
605 | } | |
de1c301e | 606 | |
a132bef0 | 607 | if (bus->bus_client) { |
3e0e196e | 608 | bus_set_state(bus, BUS_HELLO); |
e3017af9 | 609 | return 1; |
de1c301e LP |
610 | } |
611 | ||
3e0e196e | 612 | bus_set_state(bus, BUS_RUNNING); |
b38cc8d5 LP |
613 | |
614 | r = synthesize_connected_signal(bus); | |
615 | if (r < 0) | |
616 | return r; | |
617 | ||
e3017af9 | 618 | return 1; |
de1c301e LP |
619 | } |
620 | ||
621 | static int parse_address_key(const char **p, const char *key, char **value) { | |
821e0756 | 622 | size_t l, n = 0, allocated = 0; |
cad4fb19 | 623 | _cleanup_free_ char *r = NULL; |
de1c301e | 624 | const char *a; |
de1c301e LP |
625 | |
626 | assert(p); | |
627 | assert(*p); | |
de1c301e LP |
628 | assert(value); |
629 | ||
2fd9ae2e LP |
630 | if (key) { |
631 | l = strlen(key); | |
632 | if (strncmp(*p, key, l) != 0) | |
633 | return 0; | |
de1c301e | 634 | |
2fd9ae2e LP |
635 | if ((*p)[l] != '=') |
636 | return 0; | |
de1c301e | 637 | |
2fd9ae2e LP |
638 | if (*value) |
639 | return -EINVAL; | |
de1c301e | 640 | |
2fd9ae2e LP |
641 | a = *p + l + 1; |
642 | } else | |
643 | a = *p; | |
644 | ||
945c2931 | 645 | while (!IN_SET(*a, ';', ',', 0)) { |
821e0756 | 646 | char c; |
de1c301e LP |
647 | |
648 | if (*a == '%') { | |
649 | int x, y; | |
650 | ||
651 | x = unhexchar(a[1]); | |
cad4fb19 | 652 | if (x < 0) |
de1c301e | 653 | return x; |
de1c301e LP |
654 | |
655 | y = unhexchar(a[2]); | |
cad4fb19 | 656 | if (y < 0) |
de1c301e | 657 | return y; |
de1c301e | 658 | |
de1c301e | 659 | c = (char) ((x << 4) | y); |
89ffcd2a LP |
660 | a += 3; |
661 | } else { | |
de1c301e | 662 | c = *a; |
89ffcd2a LP |
663 | a++; |
664 | } | |
de1c301e | 665 | |
821e0756 | 666 | if (!GREEDY_REALLOC(r, allocated, n + 2)) |
de1c301e | 667 | return -ENOMEM; |
de1c301e | 668 | |
de1c301e LP |
669 | r[n++] = c; |
670 | } | |
671 | ||
89ffcd2a LP |
672 | if (!r) { |
673 | r = strdup(""); | |
674 | if (!r) | |
675 | return -ENOMEM; | |
676 | } else | |
677 | r[n] = 0; | |
678 | ||
679 | if (*a == ',') | |
680 | a++; | |
681 | ||
de1c301e | 682 | *p = a; |
2fd9ae2e | 683 | |
cad4fb19 | 684 | free_and_replace(*value, r); |
2fd9ae2e | 685 | |
de1c301e LP |
686 | return 1; |
687 | } | |
688 | ||
689 | static void skip_address_key(const char **p) { | |
690 | assert(p); | |
691 | assert(*p); | |
692 | ||
89ffcd2a LP |
693 | *p += strcspn(*p, ","); |
694 | ||
695 | if (**p == ',') | |
313cefa1 | 696 | (*p)++; |
de1c301e LP |
697 | } |
698 | ||
2fd9ae2e LP |
699 | static int parse_unix_address(sd_bus *b, const char **p, char **guid) { |
700 | _cleanup_free_ char *path = NULL, *abstract = NULL; | |
701 | size_t l; | |
de1c301e LP |
702 | int r; |
703 | ||
704 | assert(b); | |
2fd9ae2e LP |
705 | assert(p); |
706 | assert(*p); | |
707 | assert(guid); | |
de1c301e | 708 | |
945c2931 | 709 | while (!IN_SET(**p, 0, ';')) { |
2fd9ae2e LP |
710 | r = parse_address_key(p, "guid", guid); |
711 | if (r < 0) | |
712 | return r; | |
713 | else if (r > 0) | |
714 | continue; | |
de1c301e | 715 | |
2fd9ae2e LP |
716 | r = parse_address_key(p, "path", &path); |
717 | if (r < 0) | |
718 | return r; | |
719 | else if (r > 0) | |
720 | continue; | |
de1c301e | 721 | |
2fd9ae2e LP |
722 | r = parse_address_key(p, "abstract", &abstract); |
723 | if (r < 0) | |
724 | return r; | |
725 | else if (r > 0) | |
726 | continue; | |
de1c301e | 727 | |
2fd9ae2e LP |
728 | skip_address_key(p); |
729 | } | |
de1c301e | 730 | |
2fd9ae2e LP |
731 | if (!path && !abstract) |
732 | return -EINVAL; | |
de1c301e | 733 | |
2fd9ae2e LP |
734 | if (path && abstract) |
735 | return -EINVAL; | |
736 | ||
737 | if (path) { | |
738 | l = strlen(path); | |
1d261418 | 739 | if (l >= sizeof(b->sockaddr.un.sun_path)) /* We insist on NUL termination */ |
2fd9ae2e | 740 | return -E2BIG; |
de1c301e | 741 | |
95cb14b0 LP |
742 | b->sockaddr.un = (struct sockaddr_un) { |
743 | .sun_family = AF_UNIX, | |
744 | }; | |
745 | ||
746 | memcpy(b->sockaddr.un.sun_path, path, l); | |
747 | b->sockaddr_size = offsetof(struct sockaddr_un, sun_path) + l + 1; | |
748 | ||
749 | } else { | |
750 | assert(abstract); | |
751 | ||
2fd9ae2e | 752 | l = strlen(abstract); |
1d261418 | 753 | if (l >= sizeof(b->sockaddr.un.sun_path) - 1) /* We insist on NUL termination */ |
2fd9ae2e LP |
754 | return -E2BIG; |
755 | ||
95cb14b0 LP |
756 | b->sockaddr.un = (struct sockaddr_un) { |
757 | .sun_family = AF_UNIX, | |
758 | }; | |
759 | ||
760 | memcpy(b->sockaddr.un.sun_path+1, abstract, l); | |
2fd9ae2e LP |
761 | b->sockaddr_size = offsetof(struct sockaddr_un, sun_path) + 1 + l; |
762 | } | |
763 | ||
694859b5 LP |
764 | b->is_local = true; |
765 | ||
2fd9ae2e LP |
766 | return 0; |
767 | } | |
768 | ||
769 | static int parse_tcp_address(sd_bus *b, const char **p, char **guid) { | |
770 | _cleanup_free_ char *host = NULL, *port = NULL, *family = NULL; | |
2fd9ae2e | 771 | int r; |
b92bea5d ZJS |
772 | struct addrinfo *result, hints = { |
773 | .ai_socktype = SOCK_STREAM, | |
774 | .ai_flags = AI_ADDRCONFIG, | |
775 | }; | |
2fd9ae2e LP |
776 | |
777 | assert(b); | |
778 | assert(p); | |
779 | assert(*p); | |
780 | assert(guid); | |
781 | ||
945c2931 | 782 | while (!IN_SET(**p, 0, ';')) { |
2fd9ae2e LP |
783 | r = parse_address_key(p, "guid", guid); |
784 | if (r < 0) | |
785 | return r; | |
786 | else if (r > 0) | |
787 | continue; | |
788 | ||
789 | r = parse_address_key(p, "host", &host); | |
790 | if (r < 0) | |
791 | return r; | |
792 | else if (r > 0) | |
793 | continue; | |
794 | ||
795 | r = parse_address_key(p, "port", &port); | |
796 | if (r < 0) | |
797 | return r; | |
798 | else if (r > 0) | |
799 | continue; | |
800 | ||
801 | r = parse_address_key(p, "family", &family); | |
802 | if (r < 0) | |
803 | return r; | |
804 | else if (r > 0) | |
805 | continue; | |
806 | ||
807 | skip_address_key(p); | |
808 | } | |
809 | ||
810 | if (!host || !port) | |
811 | return -EINVAL; | |
812 | ||
2fd9ae2e LP |
813 | if (family) { |
814 | if (streq(family, "ipv4")) | |
815 | hints.ai_family = AF_INET; | |
816 | else if (streq(family, "ipv6")) | |
817 | hints.ai_family = AF_INET6; | |
818 | else | |
819 | return -EINVAL; | |
820 | } | |
821 | ||
822 | r = getaddrinfo(host, port, &hints, &result); | |
823 | if (r == EAI_SYSTEM) | |
824 | return -errno; | |
825 | else if (r != 0) | |
826 | return -EADDRNOTAVAIL; | |
827 | ||
828 | memcpy(&b->sockaddr, result->ai_addr, result->ai_addrlen); | |
829 | b->sockaddr_size = result->ai_addrlen; | |
830 | ||
831 | freeaddrinfo(result); | |
832 | ||
694859b5 LP |
833 | b->is_local = false; |
834 | ||
2fd9ae2e LP |
835 | return 0; |
836 | } | |
837 | ||
838 | static int parse_exec_address(sd_bus *b, const char **p, char **guid) { | |
839 | char *path = NULL; | |
840 | unsigned n_argv = 0, j; | |
841 | char **argv = NULL; | |
821e0756 | 842 | size_t allocated = 0; |
2fd9ae2e LP |
843 | int r; |
844 | ||
845 | assert(b); | |
846 | assert(p); | |
847 | assert(*p); | |
848 | assert(guid); | |
849 | ||
945c2931 | 850 | while (!IN_SET(**p, 0, ';')) { |
2fd9ae2e LP |
851 | r = parse_address_key(p, "guid", guid); |
852 | if (r < 0) | |
853 | goto fail; | |
854 | else if (r > 0) | |
855 | continue; | |
856 | ||
857 | r = parse_address_key(p, "path", &path); | |
858 | if (r < 0) | |
859 | goto fail; | |
860 | else if (r > 0) | |
861 | continue; | |
862 | ||
863 | if (startswith(*p, "argv")) { | |
864 | unsigned ul; | |
865 | ||
866 | errno = 0; | |
867 | ul = strtoul(*p + 4, (char**) p, 10); | |
8333c77e | 868 | if (errno > 0 || **p != '=' || ul > 256) { |
2fd9ae2e LP |
869 | r = -EINVAL; |
870 | goto fail; | |
871 | } | |
872 | ||
313cefa1 | 873 | (*p)++; |
2fd9ae2e LP |
874 | |
875 | if (ul >= n_argv) { | |
821e0756 | 876 | if (!GREEDY_REALLOC0(argv, allocated, ul + 2)) { |
2fd9ae2e LP |
877 | r = -ENOMEM; |
878 | goto fail; | |
879 | } | |
880 | ||
2fd9ae2e LP |
881 | n_argv = ul + 1; |
882 | } | |
883 | ||
884 | r = parse_address_key(p, NULL, argv + ul); | |
de1c301e | 885 | if (r < 0) |
2fd9ae2e | 886 | goto fail; |
de1c301e | 887 | |
2fd9ae2e | 888 | continue; |
de1c301e LP |
889 | } |
890 | ||
2fd9ae2e LP |
891 | skip_address_key(p); |
892 | } | |
de1c301e | 893 | |
5a0f6033 LP |
894 | if (!path) { |
895 | r = -EINVAL; | |
2fd9ae2e | 896 | goto fail; |
5a0f6033 | 897 | } |
de1c301e | 898 | |
2fd9ae2e LP |
899 | /* Make sure there are no holes in the array, with the |
900 | * exception of argv[0] */ | |
901 | for (j = 1; j < n_argv; j++) | |
902 | if (!argv[j]) { | |
903 | r = -EINVAL; | |
904 | goto fail; | |
905 | } | |
906 | ||
907 | if (argv && argv[0] == NULL) { | |
908 | argv[0] = strdup(path); | |
909 | if (!argv[0]) { | |
910 | r = -ENOMEM; | |
911 | goto fail; | |
912 | } | |
913 | } | |
de1c301e | 914 | |
2fd9ae2e LP |
915 | b->exec_path = path; |
916 | b->exec_argv = argv; | |
694859b5 LP |
917 | |
918 | b->is_local = false; | |
919 | ||
2fd9ae2e | 920 | return 0; |
de1c301e | 921 | |
2fd9ae2e LP |
922 | fail: |
923 | for (j = 0; j < n_argv; j++) | |
924 | free(argv[j]); | |
925 | ||
926 | free(argv); | |
927 | free(path); | |
928 | return r; | |
929 | } | |
930 | ||
bc9fd78c | 931 | static int parse_container_unix_address(sd_bus *b, const char **p, char **guid) { |
ee502e0c | 932 | _cleanup_free_ char *machine = NULL, *pid = NULL; |
a7893c6b LP |
933 | int r; |
934 | ||
935 | assert(b); | |
936 | assert(p); | |
937 | assert(*p); | |
938 | assert(guid); | |
939 | ||
945c2931 | 940 | while (!IN_SET(**p, 0, ';')) { |
a7893c6b LP |
941 | r = parse_address_key(p, "guid", guid); |
942 | if (r < 0) | |
943 | return r; | |
944 | else if (r > 0) | |
945 | continue; | |
946 | ||
947 | r = parse_address_key(p, "machine", &machine); | |
948 | if (r < 0) | |
949 | return r; | |
950 | else if (r > 0) | |
951 | continue; | |
952 | ||
ee502e0c LP |
953 | r = parse_address_key(p, "pid", &pid); |
954 | if (r < 0) | |
955 | return r; | |
956 | else if (r > 0) | |
957 | continue; | |
958 | ||
a7893c6b LP |
959 | skip_address_key(p); |
960 | } | |
961 | ||
ee502e0c | 962 | if (!machine == !pid) |
a7893c6b LP |
963 | return -EINVAL; |
964 | ||
ee502e0c | 965 | if (machine) { |
1e5057b9 | 966 | if (!streq(machine, ".host") && !machine_name_is_valid(machine)) |
ee502e0c | 967 | return -EINVAL; |
b6741478 | 968 | |
f9ecfd3b | 969 | free_and_replace(b->machine, machine); |
ee502e0c | 970 | } else { |
a1e58e8e | 971 | b->machine = mfree(b->machine); |
ee502e0c LP |
972 | } |
973 | ||
974 | if (pid) { | |
975 | r = parse_pid(pid, &b->nspid); | |
976 | if (r < 0) | |
977 | return r; | |
978 | } else | |
979 | b->nspid = 0; | |
a7893c6b | 980 | |
44ed5214 LP |
981 | b->sockaddr.un = (struct sockaddr_un) { |
982 | .sun_family = AF_UNIX, | |
983 | /* Note that we use the old /var/run prefix here, to increase compatibility with really old containers */ | |
984 | .sun_path = "/var/run/dbus/system_bus_socket", | |
985 | }; | |
fc2fffe7 | 986 | b->sockaddr_size = SOCKADDR_UN_LEN(b->sockaddr.un); |
694859b5 | 987 | b->is_local = false; |
a7893c6b LP |
988 | |
989 | return 0; | |
990 | } | |
991 | ||
2fd9ae2e LP |
992 | static void bus_reset_parsed_address(sd_bus *b) { |
993 | assert(b); | |
994 | ||
995 | zero(b->sockaddr); | |
996 | b->sockaddr_size = 0; | |
ba243e51 NK |
997 | b->exec_argv = strv_free(b->exec_argv); |
998 | b->exec_path = mfree(b->exec_path); | |
98178d39 | 999 | b->server_id = SD_ID128_NULL; |
ba243e51 | 1000 | b->machine = mfree(b->machine); |
ee502e0c | 1001 | b->nspid = 0; |
2fd9ae2e LP |
1002 | } |
1003 | ||
1004 | static int bus_parse_next_address(sd_bus *b) { | |
1005 | _cleanup_free_ char *guid = NULL; | |
1006 | const char *a; | |
1007 | int r; | |
1008 | ||
1009 | assert(b); | |
1010 | ||
1011 | if (!b->address) | |
1012 | return 0; | |
1013 | if (b->address[b->address_index] == 0) | |
1014 | return 0; | |
1015 | ||
1016 | bus_reset_parsed_address(b); | |
1017 | ||
1018 | a = b->address + b->address_index; | |
de1c301e | 1019 | |
2fd9ae2e | 1020 | while (*a != 0) { |
de1c301e | 1021 | |
2fd9ae2e LP |
1022 | if (*a == ';') { |
1023 | a++; | |
1024 | continue; | |
de1c301e LP |
1025 | } |
1026 | ||
2fd9ae2e LP |
1027 | if (startswith(a, "unix:")) { |
1028 | a += 5; | |
de1c301e | 1029 | |
2fd9ae2e | 1030 | r = parse_unix_address(b, &a, &guid); |
de1c301e LP |
1031 | if (r < 0) |
1032 | return r; | |
2fd9ae2e | 1033 | break; |
de1c301e | 1034 | |
2fd9ae2e | 1035 | } else if (startswith(a, "tcp:")) { |
de1c301e | 1036 | |
2fd9ae2e LP |
1037 | a += 4; |
1038 | r = parse_tcp_address(b, &a, &guid); | |
de1c301e LP |
1039 | if (r < 0) |
1040 | return r; | |
de1c301e | 1041 | |
2fd9ae2e LP |
1042 | break; |
1043 | ||
1044 | } else if (startswith(a, "unixexec:")) { | |
1045 | ||
1046 | a += 9; | |
1047 | r = parse_exec_address(b, &a, &guid); | |
de1c301e LP |
1048 | if (r < 0) |
1049 | return r; | |
de1c301e | 1050 | |
2fd9ae2e | 1051 | break; |
de1c301e | 1052 | |
de33fc62 | 1053 | } else if (startswith(a, "x-machine-unix:")) { |
bc9fd78c | 1054 | |
146d4773 | 1055 | a += 15; |
bc9fd78c LP |
1056 | r = parse_container_unix_address(b, &a, &guid); |
1057 | if (r < 0) | |
1058 | return r; | |
1059 | ||
6629161f | 1060 | break; |
de1c301e LP |
1061 | } |
1062 | ||
2fd9ae2e LP |
1063 | a = strchr(a, ';'); |
1064 | if (!a) | |
1065 | return 0; | |
de1c301e LP |
1066 | } |
1067 | ||
1068 | if (guid) { | |
98178d39 | 1069 | r = sd_id128_from_string(guid, &b->server_id); |
de1c301e LP |
1070 | if (r < 0) |
1071 | return r; | |
1072 | } | |
1073 | ||
2fd9ae2e | 1074 | b->address_index = a - b->address; |
de1c301e LP |
1075 | return 1; |
1076 | } | |
1077 | ||
392cf1d0 SL |
1078 | static void bus_kill_exec(sd_bus *bus) { |
1079 | if (pid_is_valid(bus->busexec_pid) > 0) { | |
1080 | sigterm_wait(bus->busexec_pid); | |
1081 | bus->busexec_pid = 0; | |
1082 | } | |
1083 | } | |
1084 | ||
a7e3212d | 1085 | static int bus_start_address(sd_bus *b) { |
2fd9ae2e LP |
1086 | int r; |
1087 | ||
1088 | assert(b); | |
1089 | ||
1090 | for (;;) { | |
8a5cd31e LP |
1091 | bus_close_io_fds(b); |
1092 | bus_close_inotify_fd(b); | |
a7e3212d | 1093 | |
392cf1d0 SL |
1094 | bus_kill_exec(b); |
1095 | ||
a132bef0 ZJS |
1096 | /* If you provide multiple different bus-addresses, we |
1097 | * try all of them in order and use the first one that | |
1098 | * succeeds. */ | |
15442912 | 1099 | |
1e05d493 | 1100 | if (b->exec_path) |
a7893c6b | 1101 | r = bus_socket_exec(b); |
a132bef0 ZJS |
1102 | else if ((b->nspid > 0 || b->machine) && b->sockaddr.sa.sa_family != AF_UNSPEC) |
1103 | r = bus_container_connect_socket(b); | |
a132bef0 ZJS |
1104 | else if (b->sockaddr.sa.sa_family != AF_UNSPEC) |
1105 | r = bus_socket_connect(b); | |
a132bef0 ZJS |
1106 | else |
1107 | goto next; | |
1108 | ||
1109 | if (r >= 0) { | |
8a5cd31e LP |
1110 | int q; |
1111 | ||
1112 | q = bus_attach_io_events(b); | |
1113 | if (q < 0) | |
1114 | return q; | |
1115 | ||
1116 | q = bus_attach_inotify_event(b); | |
1117 | if (q < 0) | |
1118 | return q; | |
1119 | ||
1120 | return r; | |
2fd9ae2e LP |
1121 | } |
1122 | ||
a132bef0 ZJS |
1123 | b->last_connect_error = -r; |
1124 | ||
1125 | next: | |
2fd9ae2e LP |
1126 | r = bus_parse_next_address(b); |
1127 | if (r < 0) | |
1128 | return r; | |
1129 | if (r == 0) | |
a132bef0 | 1130 | return b->last_connect_error > 0 ? -b->last_connect_error : -ECONNREFUSED; |
de1c301e LP |
1131 | } |
1132 | } | |
1133 | ||
a7e3212d LP |
1134 | int bus_next_address(sd_bus *b) { |
1135 | assert(b); | |
1136 | ||
1137 | bus_reset_parsed_address(b); | |
1138 | return bus_start_address(b); | |
1139 | } | |
1140 | ||
021a1e78 | 1141 | static int bus_start_fd(sd_bus *b) { |
6629161f | 1142 | struct stat st; |
021a1e78 LP |
1143 | int r; |
1144 | ||
1145 | assert(b); | |
e82c9509 LP |
1146 | assert(b->input_fd >= 0); |
1147 | assert(b->output_fd >= 0); | |
021a1e78 | 1148 | |
e82c9509 | 1149 | r = fd_nonblock(b->input_fd, true); |
021a1e78 LP |
1150 | if (r < 0) |
1151 | return r; | |
1152 | ||
e82c9509 | 1153 | r = fd_cloexec(b->input_fd, true); |
021a1e78 LP |
1154 | if (r < 0) |
1155 | return r; | |
1156 | ||
e82c9509 LP |
1157 | if (b->input_fd != b->output_fd) { |
1158 | r = fd_nonblock(b->output_fd, true); | |
1159 | if (r < 0) | |
1160 | return r; | |
1161 | ||
1162 | r = fd_cloexec(b->output_fd, true); | |
1163 | if (r < 0) | |
1164 | return r; | |
1165 | } | |
1166 | ||
6629161f LP |
1167 | if (fstat(b->input_fd, &st) < 0) |
1168 | return -errno; | |
1169 | ||
a132bef0 | 1170 | return bus_socket_take_fd(b); |
021a1e78 LP |
1171 | } |
1172 | ||
d9f644e2 | 1173 | _public_ int sd_bus_start(sd_bus *bus) { |
021a1e78 LP |
1174 | int r; |
1175 | ||
d6888822 | 1176 | assert_return(bus, -EINVAL); |
45b1f410 | 1177 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 LP |
1178 | assert_return(bus->state == BUS_UNSET, -EPERM); |
1179 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
021a1e78 | 1180 | |
3e0e196e | 1181 | bus_set_state(bus, BUS_OPENING); |
021a1e78 | 1182 | |
2181a7f5 LP |
1183 | if (bus->is_server && bus->bus_client) |
1184 | return -EINVAL; | |
1185 | ||
e82c9509 | 1186 | if (bus->input_fd >= 0) |
021a1e78 | 1187 | r = bus_start_fd(bus); |
a132bef0 | 1188 | else if (bus->address || bus->sockaddr.sa.sa_family != AF_UNSPEC || bus->exec_path || bus->machine) |
a7e3212d | 1189 | r = bus_start_address(bus); |
021a1e78 LP |
1190 | else |
1191 | return -EINVAL; | |
1192 | ||
db9bb83f LP |
1193 | if (r < 0) { |
1194 | sd_bus_close(bus); | |
021a1e78 | 1195 | return r; |
db9bb83f | 1196 | } |
021a1e78 LP |
1197 | |
1198 | return bus_send_hello(bus); | |
1199 | } | |
1200 | ||
56fbd718 | 1201 | _public_ int sd_bus_open_with_description(sd_bus **ret, const char *description) { |
af08d2f9 | 1202 | const char *e; |
9df088f1 | 1203 | _cleanup_(bus_freep) sd_bus *b = NULL; |
af08d2f9 LP |
1204 | int r; |
1205 | ||
1206 | assert_return(ret, -EINVAL); | |
1207 | ||
1208 | /* Let's connect to the starter bus if it is set, and | |
5238e957 | 1209 | * otherwise to the bus that is appropriate for the scope |
af08d2f9 LP |
1210 | * we are running in */ |
1211 | ||
1212 | e = secure_getenv("DBUS_STARTER_BUS_TYPE"); | |
1213 | if (e) { | |
1214 | if (streq(e, "system")) | |
56fbd718 | 1215 | return sd_bus_open_system_with_description(ret, description); |
09365592 | 1216 | else if (STR_IN_SET(e, "session", "user")) |
56fbd718 | 1217 | return sd_bus_open_user_with_description(ret, description); |
af08d2f9 LP |
1218 | } |
1219 | ||
1220 | e = secure_getenv("DBUS_STARTER_ADDRESS"); | |
1221 | if (!e) { | |
1222 | if (cg_pid_get_owner_uid(0, NULL) >= 0) | |
56fbd718 | 1223 | return sd_bus_open_user_with_description(ret, description); |
af08d2f9 | 1224 | else |
56fbd718 | 1225 | return sd_bus_open_system_with_description(ret, description); |
af08d2f9 LP |
1226 | } |
1227 | ||
1228 | r = sd_bus_new(&b); | |
1229 | if (r < 0) | |
1230 | return r; | |
1231 | ||
1232 | r = sd_bus_set_address(b, e); | |
1233 | if (r < 0) | |
9df088f1 | 1234 | return r; |
af08d2f9 LP |
1235 | |
1236 | b->bus_client = true; | |
1237 | ||
1238 | /* We don't know whether the bus is trusted or not, so better | |
1239 | * be safe, and authenticate everything */ | |
1240 | b->trusted = false; | |
694859b5 | 1241 | b->is_local = false; |
cf226cfc | 1242 | b->creds_mask |= SD_BUS_CREDS_UID | SD_BUS_CREDS_EUID | SD_BUS_CREDS_EFFECTIVE_CAPS; |
af08d2f9 LP |
1243 | |
1244 | r = sd_bus_start(b); | |
1245 | if (r < 0) | |
9df088f1 | 1246 | return r; |
af08d2f9 | 1247 | |
9df088f1 | 1248 | *ret = TAKE_PTR(b); |
af08d2f9 | 1249 | return 0; |
af08d2f9 LP |
1250 | } |
1251 | ||
56fbd718 ZJS |
1252 | _public_ int sd_bus_open(sd_bus **ret) { |
1253 | return sd_bus_open_with_description(ret, NULL); | |
1254 | } | |
1255 | ||
09365592 | 1256 | int bus_set_address_system(sd_bus *b) { |
de1c301e | 1257 | const char *e; |
09365592 LP |
1258 | assert(b); |
1259 | ||
1260 | e = secure_getenv("DBUS_SYSTEM_BUS_ADDRESS"); | |
1261 | if (e) | |
1262 | return sd_bus_set_address(b, e); | |
1263 | ||
057171ef | 1264 | return sd_bus_set_address(b, DEFAULT_SYSTEM_BUS_ADDRESS); |
09365592 LP |
1265 | } |
1266 | ||
56fbd718 | 1267 | _public_ int sd_bus_open_system_with_description(sd_bus **ret, const char *description) { |
9df088f1 | 1268 | _cleanup_(bus_freep) sd_bus *b = NULL; |
de1c301e LP |
1269 | int r; |
1270 | ||
d6888822 | 1271 | assert_return(ret, -EINVAL); |
de1c301e | 1272 | |
021a1e78 LP |
1273 | r = sd_bus_new(&b); |
1274 | if (r < 0) | |
1275 | return r; | |
1276 | ||
56fbd718 ZJS |
1277 | if (description) { |
1278 | r = sd_bus_set_description(b, description); | |
1279 | if (r < 0) | |
9df088f1 | 1280 | return r; |
56fbd718 ZJS |
1281 | } |
1282 | ||
09365592 | 1283 | r = bus_set_address_system(b); |
e3dd987c | 1284 | if (r < 0) |
9df088f1 | 1285 | return r; |
de1c301e | 1286 | |
94bbf1ba | 1287 | b->bus_client = true; |
5972fe95 | 1288 | b->is_system = true; |
021a1e78 | 1289 | |
adacb957 LP |
1290 | /* Let's do per-method access control on the system bus. We |
1291 | * need the caller's UID and capability set for that. */ | |
1292 | b->trusted = false; | |
cf226cfc | 1293 | b->creds_mask |= SD_BUS_CREDS_UID | SD_BUS_CREDS_EUID | SD_BUS_CREDS_EFFECTIVE_CAPS; |
694859b5 | 1294 | b->is_local = true; |
adacb957 | 1295 | |
021a1e78 LP |
1296 | r = sd_bus_start(b); |
1297 | if (r < 0) | |
9df088f1 | 1298 | return r; |
de1c301e | 1299 | |
9df088f1 | 1300 | *ret = TAKE_PTR(b); |
de1c301e LP |
1301 | return 0; |
1302 | } | |
1303 | ||
56fbd718 ZJS |
1304 | _public_ int sd_bus_open_system(sd_bus **ret) { |
1305 | return sd_bus_open_system_with_description(ret, NULL); | |
1306 | } | |
1307 | ||
09365592 | 1308 | int bus_set_address_user(sd_bus *b) { |
de1c301e | 1309 | const char *e; |
a132bef0 | 1310 | _cleanup_free_ char *ee = NULL, *s = NULL; |
de1c301e | 1311 | |
09365592 | 1312 | assert(b); |
021a1e78 | 1313 | |
6c03089c | 1314 | e = secure_getenv("DBUS_SESSION_BUS_ADDRESS"); |
09365592 LP |
1315 | if (e) |
1316 | return sd_bus_set_address(b, e); | |
1317 | ||
1318 | e = secure_getenv("XDG_RUNTIME_DIR"); | |
a132bef0 ZJS |
1319 | if (!e) |
1320 | return -ENOENT; | |
e3dd987c | 1321 | |
a132bef0 ZJS |
1322 | ee = bus_address_escape(e); |
1323 | if (!ee) | |
1324 | return -ENOMEM; | |
de1c301e | 1325 | |
15ca0a42 | 1326 | if (asprintf(&s, DEFAULT_USER_BUS_ADDRESS_FMT, ee) < 0) |
09365592 LP |
1327 | return -ENOMEM; |
1328 | ||
ae2a15bc | 1329 | b->address = TAKE_PTR(s); |
a132bef0 | 1330 | |
09365592 LP |
1331 | return 0; |
1332 | } | |
1333 | ||
56fbd718 | 1334 | _public_ int sd_bus_open_user_with_description(sd_bus **ret, const char *description) { |
9df088f1 | 1335 | _cleanup_(bus_freep) sd_bus *b = NULL; |
09365592 LP |
1336 | int r; |
1337 | ||
1338 | assert_return(ret, -EINVAL); | |
1339 | ||
1340 | r = sd_bus_new(&b); | |
1341 | if (r < 0) | |
1342 | return r; | |
1343 | ||
56fbd718 ZJS |
1344 | if (description) { |
1345 | r = sd_bus_set_description(b, description); | |
1346 | if (r < 0) | |
9df088f1 | 1347 | return r; |
56fbd718 ZJS |
1348 | } |
1349 | ||
09365592 LP |
1350 | r = bus_set_address_user(b); |
1351 | if (r < 0) | |
9df088f1 | 1352 | return r; |
09365592 | 1353 | |
94bbf1ba | 1354 | b->bus_client = true; |
5972fe95 | 1355 | b->is_user = true; |
de1c301e | 1356 | |
61252bae | 1357 | /* We don't do any per-method access control on the user bus. */ |
adacb957 | 1358 | b->trusted = true; |
694859b5 | 1359 | b->is_local = true; |
adacb957 | 1360 | |
021a1e78 | 1361 | r = sd_bus_start(b); |
2571ead1 | 1362 | if (r < 0) |
9df088f1 | 1363 | return r; |
de1c301e | 1364 | |
9df088f1 | 1365 | *ret = TAKE_PTR(b); |
de1c301e LP |
1366 | return 0; |
1367 | } | |
1368 | ||
56fbd718 ZJS |
1369 | _public_ int sd_bus_open_user(sd_bus **ret) { |
1370 | return sd_bus_open_user_with_description(ret, NULL); | |
1371 | } | |
1372 | ||
09365592 | 1373 | int bus_set_address_system_remote(sd_bus *b, const char *host) { |
0f8bd8de | 1374 | _cleanup_free_ char *e = NULL; |
b85b4a70 | 1375 | char *m = NULL, *c = NULL, *a, *rbracket = NULL, *p = NULL; |
0f8bd8de | 1376 | |
09365592 LP |
1377 | assert(b); |
1378 | assert(host); | |
0f8bd8de | 1379 | |
b85b4a70 SL |
1380 | /* Skip ":"s in ipv6 addresses */ |
1381 | if (*host == '[') { | |
1382 | char *t; | |
7f0d207d | 1383 | |
b85b4a70 SL |
1384 | rbracket = strchr(host, ']'); |
1385 | if (!rbracket) | |
1386 | return -EINVAL; | |
1387 | t = strndupa(host + 1, rbracket - host - 1); | |
1388 | e = bus_address_escape(t); | |
1389 | if (!e) | |
1390 | return -ENOMEM; | |
6a555849 | 1391 | } else if ((a = strchr(host, '@'))) { |
b85b4a70 SL |
1392 | if (*(a + 1) == '[') { |
1393 | _cleanup_free_ char *t = NULL; | |
1394 | ||
1395 | rbracket = strchr(a + 1, ']'); | |
1396 | if (!rbracket) | |
1397 | return -EINVAL; | |
1398 | t = new0(char, strlen(host)); | |
1399 | if (!t) | |
1400 | return -ENOMEM; | |
1401 | strncat(t, host, a - host + 1); | |
1402 | strncat(t, a + 2, rbracket - a - 2); | |
7f0d207d LP |
1403 | e = bus_address_escape(t); |
1404 | if (!e) | |
1405 | return -ENOMEM; | |
6a555849 SL |
1406 | } else if (*(a + 1) == '\0' || strchr(a + 1, '@')) |
1407 | return -EINVAL; | |
1408 | } | |
b85b4a70 SL |
1409 | |
1410 | /* Let's see if a port was given */ | |
1411 | m = strchr(rbracket ? rbracket + 1 : host, ':'); | |
1412 | if (m) { | |
1413 | char *t; | |
1414 | bool got_forward_slash = false; | |
7f0d207d | 1415 | |
b85b4a70 SL |
1416 | p = m + 1; |
1417 | ||
1418 | t = strchr(p, '/'); | |
1419 | if (t) { | |
1420 | p = strndupa(p, t - p); | |
1421 | got_forward_slash = true; | |
1422 | } | |
1423 | ||
6a555849 | 1424 | if (!in_charset(p, "0123456789") || *p == '\0') { |
b85b4a70 SL |
1425 | if (!machine_name_is_valid(p) || got_forward_slash) |
1426 | return -EINVAL; | |
490c5a37 LP |
1427 | |
1428 | m = TAKE_PTR(p); | |
1429 | goto interpret_port_as_machine_old_syntax; | |
7f0d207d LP |
1430 | } |
1431 | } | |
1432 | ||
b85b4a70 SL |
1433 | /* Let's see if a machine was given */ |
1434 | m = strchr(rbracket ? rbracket + 1 : host, '/'); | |
1435 | if (m) { | |
1436 | m++; | |
1437 | interpret_port_as_machine_old_syntax: | |
1438 | /* Let's make sure this is not a port of some kind, | |
1439 | * and is a valid machine name. */ | |
1440 | if (!in_charset(m, "0123456789") && machine_name_is_valid(m)) | |
1441 | c = strjoina(",argv", p ? "7" : "5", "=--machine=", m); | |
1442 | } | |
1443 | ||
7f0d207d | 1444 | if (!e) { |
b85b4a70 SL |
1445 | char *t; |
1446 | ||
1447 | t = strndupa(host, strcspn(host, ":/")); | |
1448 | ||
1449 | e = bus_address_escape(t); | |
7f0d207d LP |
1450 | if (!e) |
1451 | return -ENOMEM; | |
1452 | } | |
0f8bd8de | 1453 | |
b85b4a70 SL |
1454 | a = strjoin("unixexec:path=ssh,argv1=-xT", p ? ",argv2=-p,argv3=" : "", strempty(p), |
1455 | ",argv", p ? "4" : "2", "=--,argv", p ? "5" : "3", "=", e, | |
1456 | ",argv", p ? "6" : "4", "=systemd-stdio-bridge", c); | |
b4ca3f45 | 1457 | if (!a) |
0f8bd8de | 1458 | return -ENOMEM; |
a7893c6b | 1459 | |
0639f135 ZJS |
1460 | return free_and_replace(b->address, a); |
1461 | } | |
09365592 LP |
1462 | |
1463 | _public_ int sd_bus_open_system_remote(sd_bus **ret, const char *host) { | |
9df088f1 | 1464 | _cleanup_(bus_freep) sd_bus *b = NULL; |
09365592 LP |
1465 | int r; |
1466 | ||
1467 | assert_return(host, -EINVAL); | |
1468 | assert_return(ret, -EINVAL); | |
1469 | ||
9df088f1 | 1470 | r = sd_bus_new(&b); |
09365592 | 1471 | if (r < 0) |
a7893c6b | 1472 | return r; |
a7893c6b | 1473 | |
9df088f1 | 1474 | r = bus_set_address_system_remote(b, host); |
09365592 | 1475 | if (r < 0) |
9df088f1 | 1476 | return r; |
09365592 | 1477 | |
9df088f1 ZJS |
1478 | b->bus_client = true; |
1479 | b->trusted = false; | |
1480 | b->is_system = true; | |
1481 | b->is_local = false; | |
a7893c6b | 1482 | |
9df088f1 | 1483 | r = sd_bus_start(b); |
09365592 | 1484 | if (r < 0) |
9df088f1 | 1485 | return r; |
a7893c6b | 1486 | |
9df088f1 | 1487 | *ret = TAKE_PTR(b); |
a7893c6b LP |
1488 | return 0; |
1489 | } | |
1490 | ||
de33fc62 | 1491 | int bus_set_address_system_machine(sd_bus *b, const char *machine) { |
a7893c6b | 1492 | _cleanup_free_ char *e = NULL; |
b4ca3f45 | 1493 | char *a; |
a7893c6b | 1494 | |
09365592 LP |
1495 | assert(b); |
1496 | assert(machine); | |
a7893c6b LP |
1497 | |
1498 | e = bus_address_escape(machine); | |
1499 | if (!e) | |
1500 | return -ENOMEM; | |
1501 | ||
b4ca3f45 YW |
1502 | a = strjoin("x-machine-unix:machine=", e); |
1503 | if (!a) | |
a7893c6b | 1504 | return -ENOMEM; |
0f8bd8de | 1505 | |
0639f135 | 1506 | return free_and_replace(b->address, a); |
09365592 LP |
1507 | } |
1508 | ||
de33fc62 | 1509 | _public_ int sd_bus_open_system_machine(sd_bus **ret, const char *machine) { |
9df088f1 | 1510 | _cleanup_(bus_freep) sd_bus *b = NULL; |
09365592 LP |
1511 | int r; |
1512 | ||
1513 | assert_return(machine, -EINVAL); | |
1514 | assert_return(ret, -EINVAL); | |
1e5057b9 | 1515 | assert_return(streq(machine, ".host") || machine_name_is_valid(machine), -EINVAL); |
09365592 | 1516 | |
9df088f1 | 1517 | r = sd_bus_new(&b); |
09365592 | 1518 | if (r < 0) |
0f8bd8de | 1519 | return r; |
0f8bd8de | 1520 | |
9df088f1 | 1521 | r = bus_set_address_system_machine(b, machine); |
09365592 | 1522 | if (r < 0) |
9df088f1 | 1523 | return r; |
09365592 | 1524 | |
9df088f1 ZJS |
1525 | b->bus_client = true; |
1526 | b->trusted = false; | |
1527 | b->is_system = true; | |
1528 | b->is_local = false; | |
0f8bd8de | 1529 | |
9df088f1 | 1530 | r = sd_bus_start(b); |
09365592 | 1531 | if (r < 0) |
9df088f1 | 1532 | return r; |
0f8bd8de | 1533 | |
9df088f1 | 1534 | *ret = TAKE_PTR(b); |
0f8bd8de LP |
1535 | return 0; |
1536 | } | |
1537 | ||
d9f644e2 | 1538 | _public_ void sd_bus_close(sd_bus *bus) { |
de1c301e LP |
1539 | if (!bus) |
1540 | return; | |
d5a2b9a6 LP |
1541 | if (bus->state == BUS_CLOSED) |
1542 | return; | |
1543 | if (bus_pid_changed(bus)) | |
f54514f3 LP |
1544 | return; |
1545 | ||
392cf1d0 SL |
1546 | /* Don't leave ssh hanging around */ |
1547 | bus_kill_exec(bus); | |
1548 | ||
3e0e196e | 1549 | bus_set_state(bus, BUS_CLOSED); |
e82c9509 | 1550 | |
40ca29a1 LP |
1551 | sd_bus_detach_event(bus); |
1552 | ||
0e586eae LP |
1553 | /* Drop all queued messages so that they drop references to |
1554 | * the bus object and the bus may be freed */ | |
1555 | bus_reset_queues(bus); | |
1556 | ||
8a5cd31e LP |
1557 | bus_close_io_fds(bus); |
1558 | bus_close_inotify_fd(bus); | |
de1c301e LP |
1559 | } |
1560 | ||
bd62b744 LP |
1561 | _public_ sd_bus *sd_bus_close_unref(sd_bus *bus) { |
1562 | if (!bus) | |
1563 | return NULL; | |
1564 | ||
1565 | sd_bus_close(bus); | |
1566 | ||
1567 | return sd_bus_unref(bus); | |
1568 | } | |
1569 | ||
03976f7b | 1570 | _public_ sd_bus* sd_bus_flush_close_unref(sd_bus *bus) { |
03976f7b LP |
1571 | if (!bus) |
1572 | return NULL; | |
1573 | ||
392cf1d0 SL |
1574 | /* Have to do this before flush() to prevent hang */ |
1575 | bus_kill_exec(bus); | |
03976f7b | 1576 | sd_bus_flush(bus); |
03976f7b | 1577 | |
bd62b744 | 1578 | return sd_bus_close_unref(bus); |
03976f7b LP |
1579 | } |
1580 | ||
98c5bbc8 | 1581 | void bus_enter_closing(sd_bus *bus) { |
718db961 LP |
1582 | assert(bus); |
1583 | ||
8a5cd31e | 1584 | if (!IN_SET(bus->state, BUS_WATCH_BIND, BUS_OPENING, BUS_AUTHENTICATING, BUS_HELLO, BUS_RUNNING)) |
718db961 LP |
1585 | return; |
1586 | ||
3e0e196e | 1587 | bus_set_state(bus, BUS_CLOSING); |
718db961 LP |
1588 | } |
1589 | ||
42541a71 | 1590 | DEFINE_PUBLIC_TRIVIAL_REF_UNREF_FUNC(sd_bus, sd_bus, bus_free); |
de1c301e | 1591 | |
d9f644e2 | 1592 | _public_ int sd_bus_is_open(sd_bus *bus) { |
d6888822 | 1593 | assert_return(bus, -EINVAL); |
45b1f410 | 1594 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 | 1595 | assert_return(!bus_pid_changed(bus), -ECHILD); |
e3017af9 | 1596 | |
f54514f3 | 1597 | return BUS_IS_OPEN(bus->state); |
e3017af9 LP |
1598 | } |
1599 | ||
bdbc8669 LP |
1600 | _public_ int sd_bus_is_ready(sd_bus *bus) { |
1601 | assert_return(bus, -EINVAL); | |
45b1f410 | 1602 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
bdbc8669 LP |
1603 | assert_return(!bus_pid_changed(bus), -ECHILD); |
1604 | ||
1605 | return bus->state == BUS_RUNNING; | |
1606 | } | |
1607 | ||
d9f644e2 | 1608 | _public_ int sd_bus_can_send(sd_bus *bus, char type) { |
d728d708 LP |
1609 | int r; |
1610 | ||
d6888822 | 1611 | assert_return(bus, -EINVAL); |
45b1f410 | 1612 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 LP |
1613 | assert_return(bus->state != BUS_UNSET, -ENOTCONN); |
1614 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
de1c301e | 1615 | |
c7db1984 | 1616 | if (bus->is_monitor) |
09365592 LP |
1617 | return 0; |
1618 | ||
d728d708 | 1619 | if (type == SD_BUS_TYPE_UNIX_FD) { |
c7db1984 | 1620 | if (!bus->accept_fd) |
021a1e78 LP |
1621 | return 0; |
1622 | ||
20902f3e | 1623 | r = bus_ensure_running(bus); |
d728d708 LP |
1624 | if (r < 0) |
1625 | return r; | |
de1c301e | 1626 | |
d728d708 LP |
1627 | return bus->can_fds; |
1628 | } | |
1629 | ||
1630 | return bus_type_is_valid(type); | |
de1c301e LP |
1631 | } |
1632 | ||
5c302692 | 1633 | _public_ int sd_bus_get_bus_id(sd_bus *bus, sd_id128_t *id) { |
d728d708 | 1634 | int r; |
de1c301e | 1635 | |
d6888822 | 1636 | assert_return(bus, -EINVAL); |
45b1f410 | 1637 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
f7fce345 | 1638 | assert_return(id, -EINVAL); |
d6888822 | 1639 | assert_return(!bus_pid_changed(bus), -ECHILD); |
de1c301e | 1640 | |
20902f3e | 1641 | r = bus_ensure_running(bus); |
d728d708 LP |
1642 | if (r < 0) |
1643 | return r; | |
de1c301e | 1644 | |
f7fce345 | 1645 | *id = bus->server_id; |
d728d708 | 1646 | return 0; |
de1c301e LP |
1647 | } |
1648 | ||
1f82f5bb LP |
1649 | #define COOKIE_CYCLED (UINT32_C(1) << 31) |
1650 | ||
1651 | static uint64_t cookie_inc(uint64_t cookie) { | |
1652 | ||
1653 | /* Stay within the 32bit range, since classic D-Bus can't deal with more */ | |
1654 | if (cookie >= UINT32_MAX) | |
1655 | return COOKIE_CYCLED; /* Don't go back to zero, but use the highest bit for checking | |
1656 | * whether we are looping. */ | |
1657 | ||
1658 | return cookie + 1; | |
1659 | } | |
1660 | ||
1661 | static int next_cookie(sd_bus *b) { | |
1662 | uint64_t new_cookie; | |
1663 | ||
1664 | assert(b); | |
1665 | ||
1666 | new_cookie = cookie_inc(b->cookie); | |
1667 | ||
1668 | /* Small optimization: don't bother with checking for cookie reuse until we overran cookiespace at | |
1669 | * least once, but then do it thorougly. */ | |
1670 | if (FLAGS_SET(new_cookie, COOKIE_CYCLED)) { | |
1671 | uint32_t i; | |
1672 | ||
1673 | /* Check if the cookie is currently in use. If so, pick the next one */ | |
1674 | for (i = 0; i < COOKIE_CYCLED; i++) { | |
1675 | if (!ordered_hashmap_contains(b->reply_callbacks, &new_cookie)) | |
1676 | goto good; | |
1677 | ||
1678 | new_cookie = cookie_inc(new_cookie); | |
1679 | } | |
1680 | ||
1681 | /* Can't fulfill request */ | |
1682 | return -EBUSY; | |
1683 | } | |
1684 | ||
1685 | good: | |
1686 | b->cookie = new_cookie; | |
1687 | return 0; | |
1688 | } | |
1689 | ||
3df7a7e6 | 1690 | static int bus_seal_message(sd_bus *b, sd_bus_message *m, usec_t timeout) { |
48ef41a3 LP |
1691 | int r; |
1692 | ||
7adc46fc | 1693 | assert(b); |
de1c301e LP |
1694 | assert(m); |
1695 | ||
aea93deb LP |
1696 | if (m->sealed) { |
1697 | /* If we copy the same message to multiple | |
693eb9a2 | 1698 | * destinations, avoid using the same cookie |
aea93deb | 1699 | * numbers. */ |
693eb9a2 | 1700 | b->cookie = MAX(b->cookie, BUS_MESSAGE_COOKIE(m)); |
de1c301e | 1701 | return 0; |
aea93deb | 1702 | } |
de1c301e | 1703 | |
385b2eb2 YW |
1704 | if (timeout == 0) { |
1705 | r = sd_bus_get_method_call_timeout(b, &timeout); | |
1706 | if (r < 0) | |
1707 | return r; | |
1708 | } | |
3df7a7e6 | 1709 | |
48ef41a3 LP |
1710 | if (!m->sender && b->patch_sender) { |
1711 | r = sd_bus_message_set_sender(m, b->patch_sender); | |
1712 | if (r < 0) | |
1713 | return r; | |
1714 | } | |
1715 | ||
1f82f5bb LP |
1716 | r = next_cookie(b); |
1717 | if (r < 0) | |
1718 | return r; | |
1719 | ||
1720 | return sd_bus_message_seal(m, b->cookie, timeout); | |
de1c301e LP |
1721 | } |
1722 | ||
e1c433c6 | 1723 | static int bus_remarshal_message(sd_bus *b, sd_bus_message **m) { |
908b8a42 DH |
1724 | bool remarshal = false; |
1725 | ||
e1c433c6 LP |
1726 | assert(b); |
1727 | ||
908b8a42 DH |
1728 | /* wrong packet version */ |
1729 | if (b->message_version != 0 && b->message_version != (*m)->header->version) | |
1730 | remarshal = true; | |
1731 | ||
1732 | /* wrong packet endianness */ | |
1733 | if (b->message_endian != 0 && b->message_endian != (*m)->header->endian) | |
1734 | remarshal = true; | |
1735 | ||
908b8a42 | 1736 | return remarshal ? bus_message_remarshal(b, m) : 0; |
e1c433c6 LP |
1737 | } |
1738 | ||
7adc46fc LP |
1739 | int bus_seal_synthetic_message(sd_bus *b, sd_bus_message *m) { |
1740 | assert(b); | |
1741 | assert(m); | |
1742 | ||
52cd5877 LP |
1743 | /* Fake some timestamps, if they were requested, and not |
1744 | * already initialized */ | |
c7db1984 | 1745 | if (b->attach_timestamp) { |
52cd5877 LP |
1746 | if (m->realtime <= 0) |
1747 | m->realtime = now(CLOCK_REALTIME); | |
1748 | ||
1749 | if (m->monotonic <= 0) | |
1750 | m->monotonic = now(CLOCK_MONOTONIC); | |
1751 | } | |
1752 | ||
7adc46fc LP |
1753 | /* The bus specification says the serial number cannot be 0, |
1754 | * hence let's fill something in for synthetic messages. Since | |
1755 | * synthetic messages might have a fake sender and we don't | |
1756 | * want to interfere with the real sender's serial numbers we | |
6f285378 | 1757 | * pick a fixed, artificial one. We use (uint32_t) -1 rather |
7adc46fc LP |
1758 | * than (uint64_t) -1 since dbus1 only had 32bit identifiers, |
1759 | * even though kdbus can do 64bit. */ | |
75bcbcf2 | 1760 | return sd_bus_message_seal(m, 0xFFFFFFFFULL, 0); |
7adc46fc LP |
1761 | } |
1762 | ||
66baf8c6 | 1763 | static int bus_write_message(sd_bus *bus, sd_bus_message *m, size_t *idx) { |
2e3db52d LP |
1764 | int r; |
1765 | ||
718db961 | 1766 | assert(bus); |
2e3db52d | 1767 | assert(m); |
718db961 | 1768 | |
a132bef0 | 1769 | r = bus_socket_write_message(bus, m, idx); |
2e3db52d LP |
1770 | if (r <= 0) |
1771 | return r; | |
1772 | ||
a132bef0 | 1773 | if (*idx >= BUS_MESSAGE_SIZE(m)) |
e32fd6b4 | 1774 | log_debug("Sent message type=%s sender=%s destination=%s path=%s interface=%s member=%s cookie=%" PRIu64 " reply_cookie=%" PRIu64 " signature=%s error-name=%s error-message=%s", |
2e3db52d LP |
1775 | bus_message_type_to_string(m->header->type), |
1776 | strna(sd_bus_message_get_sender(m)), | |
1777 | strna(sd_bus_message_get_destination(m)), | |
1778 | strna(sd_bus_message_get_path(m)), | |
1779 | strna(sd_bus_message_get_interface(m)), | |
1780 | strna(sd_bus_message_get_member(m)), | |
42c4ebcb LP |
1781 | BUS_MESSAGE_COOKIE(m), |
1782 | m->reply_cookie, | |
e32fd6b4 | 1783 | strna(m->root_container.signature), |
e28d0865 | 1784 | strna(m->error.name), |
2e3db52d LP |
1785 | strna(m->error.message)); |
1786 | ||
1787 | return r; | |
718db961 LP |
1788 | } |
1789 | ||
de1c301e | 1790 | static int dispatch_wqueue(sd_bus *bus) { |
e3017af9 | 1791 | int r, ret = 0; |
de1c301e LP |
1792 | |
1793 | assert(bus); | |
945c2931 | 1794 | assert(IN_SET(bus->state, BUS_RUNNING, BUS_HELLO)); |
de1c301e | 1795 | |
de1c301e LP |
1796 | while (bus->wqueue_size > 0) { |
1797 | ||
66baf8c6 | 1798 | r = bus_write_message(bus, bus->wqueue[0], &bus->windex); |
718db961 | 1799 | if (r < 0) |
de1c301e | 1800 | return r; |
718db961 | 1801 | else if (r == 0) |
e3017af9 LP |
1802 | /* Didn't do anything this time */ |
1803 | return ret; | |
a132bef0 | 1804 | else if (bus->windex >= BUS_MESSAGE_SIZE(bus->wqueue[0])) { |
de1c301e LP |
1805 | /* Fully written. Let's drop the entry from |
1806 | * the queue. | |
1807 | * | |
1808 | * This isn't particularly optimized, but | |
1809 | * well, this is supposed to be our worst-case | |
1810 | * buffer only, and the socket buffer is | |
1811 | * supposed to be our primary buffer, and if | |
1812 | * it got full, then all bets are off | |
1813 | * anyway. */ | |
1814 | ||
313cefa1 | 1815 | bus->wqueue_size--; |
c1757a70 | 1816 | bus_message_unref_queued(bus->wqueue[0], bus); |
de1c301e LP |
1817 | memmove(bus->wqueue, bus->wqueue + 1, sizeof(sd_bus_message*) * bus->wqueue_size); |
1818 | bus->windex = 0; | |
1819 | ||
e3017af9 | 1820 | ret = 1; |
de1c301e LP |
1821 | } |
1822 | } | |
1823 | ||
e3017af9 | 1824 | return ret; |
de1c301e LP |
1825 | } |
1826 | ||
766c5809 | 1827 | static int bus_read_message(sd_bus *bus, bool hint_priority, int64_t priority) { |
7d22c717 LP |
1828 | assert(bus); |
1829 | ||
a132bef0 | 1830 | return bus_socket_read_message(bus); |
7d22c717 LP |
1831 | } |
1832 | ||
7adc46fc | 1833 | int bus_rqueue_make_room(sd_bus *bus) { |
821e0756 | 1834 | assert(bus); |
7d22c717 | 1835 | |
821e0756 | 1836 | if (bus->rqueue_size >= BUS_RQUEUE_MAX) |
7d22c717 LP |
1837 | return -ENOBUFS; |
1838 | ||
821e0756 | 1839 | if (!GREEDY_REALLOC(bus->rqueue, bus->rqueue_allocated, bus->rqueue_size + 1)) |
7d22c717 LP |
1840 | return -ENOMEM; |
1841 | ||
7d22c717 LP |
1842 | return 0; |
1843 | } | |
1844 | ||
c1757a70 LP |
1845 | static void rqueue_drop_one(sd_bus *bus, size_t i) { |
1846 | assert(bus); | |
1847 | assert(i < bus->rqueue_size); | |
1848 | ||
1849 | bus_message_unref_queued(bus->rqueue[i], bus); | |
1850 | memmove(bus->rqueue + i, bus->rqueue + i + 1, sizeof(sd_bus_message*) * (bus->rqueue_size - i - 1)); | |
1851 | bus->rqueue_size--; | |
1852 | } | |
1853 | ||
766c5809 | 1854 | static int dispatch_rqueue(sd_bus *bus, bool hint_priority, int64_t priority, sd_bus_message **m) { |
e3017af9 | 1855 | int r, ret = 0; |
de1c301e LP |
1856 | |
1857 | assert(bus); | |
1858 | assert(m); | |
945c2931 | 1859 | assert(IN_SET(bus->state, BUS_RUNNING, BUS_HELLO)); |
de1c301e | 1860 | |
766c5809 LP |
1861 | /* Note that the priority logic is only available on kdbus, |
1862 | * where the rqueue is unused. We check the rqueue here | |
1863 | * anyway, because it's simple... */ | |
1864 | ||
7d22c717 LP |
1865 | for (;;) { |
1866 | if (bus->rqueue_size > 0) { | |
1867 | /* Dispatch a queued message */ | |
c1757a70 LP |
1868 | *m = sd_bus_message_ref(bus->rqueue[0]); |
1869 | rqueue_drop_one(bus, 0); | |
7d22c717 LP |
1870 | return 1; |
1871 | } | |
de1c301e | 1872 | |
7d22c717 | 1873 | /* Try to read a new message */ |
766c5809 | 1874 | r = bus_read_message(bus, hint_priority, priority); |
718db961 | 1875 | if (r < 0) |
e3017af9 | 1876 | return r; |
c0bc4ec5 LP |
1877 | if (r == 0) { |
1878 | *m = NULL; | |
e3017af9 | 1879 | return ret; |
c0bc4ec5 | 1880 | } |
de1c301e | 1881 | |
2e8d788c | 1882 | ret = 1; |
7d22c717 | 1883 | } |
de1c301e LP |
1884 | } |
1885 | ||
66baf8c6 | 1886 | _public_ int sd_bus_send(sd_bus *bus, sd_bus_message *_m, uint64_t *cookie) { |
4afd3348 | 1887 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = sd_bus_message_ref(_m); |
de1c301e LP |
1888 | int r; |
1889 | ||
d6888822 | 1890 | assert_return(m, -EINVAL); |
9030ca46 LP |
1891 | |
1892 | if (!bus) | |
1893 | bus = m->bus; | |
1894 | ||
d6888822 | 1895 | assert_return(!bus_pid_changed(bus), -ECHILD); |
021a1e78 | 1896 | |
a3d59cd1 LP |
1897 | if (!BUS_IS_OPEN(bus->state)) |
1898 | return -ENOTCONN; | |
1899 | ||
021a1e78 LP |
1900 | if (m->n_fds > 0) { |
1901 | r = sd_bus_can_send(bus, SD_BUS_TYPE_UNIX_FD); | |
1902 | if (r < 0) | |
1903 | return r; | |
1904 | if (r == 0) | |
15411c0c | 1905 | return -EOPNOTSUPP; |
021a1e78 | 1906 | } |
de1c301e | 1907 | |
693eb9a2 | 1908 | /* If the cookie number isn't kept, then we know that no reply |
29f6aadd | 1909 | * is expected */ |
693eb9a2 | 1910 | if (!cookie && !m->sealed) |
0461f8cd | 1911 | m->header->flags |= BUS_MESSAGE_NO_REPLY_EXPECTED; |
29f6aadd | 1912 | |
3df7a7e6 | 1913 | r = bus_seal_message(bus, m, 0); |
de1c301e LP |
1914 | if (r < 0) |
1915 | return r; | |
1916 | ||
441d56a1 | 1917 | /* Remarshall if we have to. This will possibly unref the |
e1c433c6 LP |
1918 | * message and place a replacement in m */ |
1919 | r = bus_remarshal_message(bus, &m); | |
1920 | if (r < 0) | |
1921 | return r; | |
1922 | ||
5407f2de LP |
1923 | /* If this is a reply and no reply was requested, then let's |
1924 | * suppress this, if we can */ | |
997eadb5 LP |
1925 | if (m->dont_send) |
1926 | goto finish; | |
5407f2de | 1927 | |
945c2931 | 1928 | if (IN_SET(bus->state, BUS_RUNNING, BUS_HELLO) && bus->wqueue_size <= 0) { |
de1c301e LP |
1929 | size_t idx = 0; |
1930 | ||
66baf8c6 | 1931 | r = bus_write_message(bus, m, &idx); |
32f46480 | 1932 | if (r < 0) { |
f60a028a | 1933 | if (ERRNO_IS_DISCONNECT(r)) { |
32f46480 | 1934 | bus_enter_closing(bus); |
441d56a1 LP |
1935 | return -ECONNRESET; |
1936 | } | |
32f46480 | 1937 | |
de1c301e | 1938 | return r; |
997eadb5 LP |
1939 | } |
1940 | ||
a132bef0 | 1941 | if (idx < BUS_MESSAGE_SIZE(m)) { |
de1c301e LP |
1942 | /* Wasn't fully written. So let's remember how |
1943 | * much was written. Note that the first entry | |
1944 | * of the wqueue array is always allocated so | |
1945 | * that we always can remember how much was | |
1946 | * written. */ | |
c1757a70 | 1947 | bus->wqueue[0] = bus_message_ref_queued(m, bus); |
de1c301e LP |
1948 | bus->wqueue_size = 1; |
1949 | bus->windex = idx; | |
1950 | } | |
997eadb5 | 1951 | |
de1c301e | 1952 | } else { |
de1c301e LP |
1953 | /* Just append it to the queue. */ |
1954 | ||
25220239 | 1955 | if (bus->wqueue_size >= BUS_WQUEUE_MAX) |
de1c301e LP |
1956 | return -ENOBUFS; |
1957 | ||
821e0756 | 1958 | if (!GREEDY_REALLOC(bus->wqueue, bus->wqueue_allocated, bus->wqueue_size + 1)) |
de1c301e LP |
1959 | return -ENOMEM; |
1960 | ||
c1757a70 | 1961 | bus->wqueue[bus->wqueue_size++] = bus_message_ref_queued(m, bus); |
de1c301e LP |
1962 | } |
1963 | ||
997eadb5 | 1964 | finish: |
693eb9a2 LP |
1965 | if (cookie) |
1966 | *cookie = BUS_MESSAGE_COOKIE(m); | |
de1c301e | 1967 | |
7a37d625 | 1968 | return 1; |
de1c301e LP |
1969 | } |
1970 | ||
693eb9a2 | 1971 | _public_ int sd_bus_send_to(sd_bus *bus, sd_bus_message *m, const char *destination, uint64_t *cookie) { |
911121a7 LP |
1972 | int r; |
1973 | ||
911121a7 | 1974 | assert_return(m, -EINVAL); |
9030ca46 LP |
1975 | |
1976 | if (!bus) | |
1977 | bus = m->bus; | |
1978 | ||
911121a7 LP |
1979 | assert_return(!bus_pid_changed(bus), -ECHILD); |
1980 | ||
a3d59cd1 LP |
1981 | if (!BUS_IS_OPEN(bus->state)) |
1982 | return -ENOTCONN; | |
1983 | ||
911121a7 LP |
1984 | if (!streq_ptr(m->destination, destination)) { |
1985 | ||
1986 | if (!destination) | |
1987 | return -EEXIST; | |
1988 | ||
1989 | r = sd_bus_message_set_destination(m, destination); | |
1990 | if (r < 0) | |
1991 | return r; | |
1992 | } | |
1993 | ||
693eb9a2 | 1994 | return sd_bus_send(bus, m, cookie); |
911121a7 LP |
1995 | } |
1996 | ||
ac8029fc LP |
1997 | static usec_t calc_elapse(sd_bus *bus, uint64_t usec) { |
1998 | assert(bus); | |
1999 | ||
de1c301e LP |
2000 | if (usec == (uint64_t) -1) |
2001 | return 0; | |
2002 | ||
ac8029fc LP |
2003 | /* We start all timeouts the instant we enter BUS_HELLO/BUS_RUNNING state, so that the don't run in parallel |
2004 | * with any connection setup states. Hence, if a method callback is started earlier than that we just store the | |
2005 | * relative timestamp, and afterwards the absolute one. */ | |
2006 | ||
2007 | if (IN_SET(bus->state, BUS_WATCH_BIND, BUS_OPENING, BUS_AUTHENTICATING)) | |
2008 | return usec; | |
2009 | else | |
2010 | return now(CLOCK_MONOTONIC) + usec; | |
de1c301e LP |
2011 | } |
2012 | ||
e3017af9 LP |
2013 | static int timeout_compare(const void *a, const void *b) { |
2014 | const struct reply_callback *x = a, *y = b; | |
2015 | ||
ac8029fc | 2016 | if (x->timeout_usec != 0 && y->timeout_usec == 0) |
e3017af9 LP |
2017 | return -1; |
2018 | ||
ac8029fc | 2019 | if (x->timeout_usec == 0 && y->timeout_usec != 0) |
e3017af9 LP |
2020 | return 1; |
2021 | ||
9c57a73b | 2022 | return CMP(x->timeout_usec, y->timeout_usec); |
e3017af9 LP |
2023 | } |
2024 | ||
c49b30a2 | 2025 | _public_ int sd_bus_call_async( |
de1c301e | 2026 | sd_bus *bus, |
19befb2d | 2027 | sd_bus_slot **slot, |
e1c433c6 | 2028 | sd_bus_message *_m, |
52f3ba91 | 2029 | sd_bus_message_handler_t callback, |
de1c301e | 2030 | void *userdata, |
19befb2d | 2031 | uint64_t usec) { |
de1c301e | 2032 | |
4afd3348 LP |
2033 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = sd_bus_message_ref(_m); |
2034 | _cleanup_(sd_bus_slot_unrefp) sd_bus_slot *s = NULL; | |
de1c301e LP |
2035 | int r; |
2036 | ||
d6888822 | 2037 | assert_return(m, -EINVAL); |
40ca29a1 | 2038 | assert_return(m->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EINVAL); |
dbc526f0 | 2039 | assert_return(!m->sealed || (!!callback == !(m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED)), -EINVAL); |
9030ca46 LP |
2040 | |
2041 | if (!bus) | |
2042 | bus = m->bus; | |
2043 | ||
d6888822 | 2044 | assert_return(!bus_pid_changed(bus), -ECHILD); |
89ffcd2a | 2045 | |
a3d59cd1 LP |
2046 | if (!BUS_IS_OPEN(bus->state)) |
2047 | return -ENOTCONN; | |
2048 | ||
dbc526f0 LP |
2049 | /* If no callback is specified and there's no interest in a slot, then there's no reason to ask for a reply */ |
2050 | if (!callback && !slot && !m->sealed) | |
2051 | m->header->flags |= BUS_MESSAGE_NO_REPLY_EXPECTED; | |
2052 | ||
c9fe4af7 | 2053 | r = ordered_hashmap_ensure_allocated(&bus->reply_callbacks, &uint64_hash_ops); |
89ffcd2a LP |
2054 | if (r < 0) |
2055 | return r; | |
de1c301e | 2056 | |
3df7a7e6 LP |
2057 | r = prioq_ensure_allocated(&bus->reply_callbacks_prioq, timeout_compare); |
2058 | if (r < 0) | |
2059 | return r; | |
e3017af9 | 2060 | |
3df7a7e6 | 2061 | r = bus_seal_message(bus, m, usec); |
de1c301e LP |
2062 | if (r < 0) |
2063 | return r; | |
2064 | ||
e1c433c6 LP |
2065 | r = bus_remarshal_message(bus, &m); |
2066 | if (r < 0) | |
2067 | return r; | |
2068 | ||
dbc526f0 LP |
2069 | if (slot || callback) { |
2070 | s = bus_slot_allocate(bus, !slot, BUS_REPLY_CALLBACK, sizeof(struct reply_callback), userdata); | |
2071 | if (!s) | |
2072 | return -ENOMEM; | |
de1c301e | 2073 | |
dbc526f0 | 2074 | s->reply_callback.callback = callback; |
de1c301e | 2075 | |
dbc526f0 LP |
2076 | s->reply_callback.cookie = BUS_MESSAGE_COOKIE(m); |
2077 | r = ordered_hashmap_put(bus->reply_callbacks, &s->reply_callback.cookie, &s->reply_callback); | |
e3017af9 | 2078 | if (r < 0) { |
dbc526f0 | 2079 | s->reply_callback.cookie = 0; |
e3017af9 LP |
2080 | return r; |
2081 | } | |
dbc526f0 LP |
2082 | |
2083 | s->reply_callback.timeout_usec = calc_elapse(bus, m->timeout); | |
2084 | if (s->reply_callback.timeout_usec != 0) { | |
2085 | r = prioq_put(bus->reply_callbacks_prioq, &s->reply_callback, &s->reply_callback.prioq_idx); | |
2086 | if (r < 0) { | |
2087 | s->reply_callback.timeout_usec = 0; | |
2088 | return r; | |
2089 | } | |
2090 | } | |
e3017af9 LP |
2091 | } |
2092 | ||
dbc526f0 | 2093 | r = sd_bus_send(bus, m, s ? &s->reply_callback.cookie : NULL); |
19befb2d | 2094 | if (r < 0) |
de1c301e | 2095 | return r; |
de1c301e | 2096 | |
19befb2d LP |
2097 | if (slot) |
2098 | *slot = s; | |
2099 | s = NULL; | |
e3017af9 | 2100 | |
19befb2d | 2101 | return r; |
de1c301e LP |
2102 | } |
2103 | ||
20902f3e | 2104 | int bus_ensure_running(sd_bus *bus) { |
89ffcd2a LP |
2105 | int r; |
2106 | ||
2107 | assert(bus); | |
2108 | ||
945c2931 | 2109 | if (IN_SET(bus->state, BUS_UNSET, BUS_CLOSED, BUS_CLOSING)) |
021a1e78 | 2110 | return -ENOTCONN; |
d728d708 LP |
2111 | if (bus->state == BUS_RUNNING) |
2112 | return 1; | |
89ffcd2a LP |
2113 | |
2114 | for (;;) { | |
2115 | r = sd_bus_process(bus, NULL); | |
2116 | if (r < 0) | |
2117 | return r; | |
d728d708 LP |
2118 | if (bus->state == BUS_RUNNING) |
2119 | return 1; | |
e3017af9 LP |
2120 | if (r > 0) |
2121 | continue; | |
89ffcd2a LP |
2122 | |
2123 | r = sd_bus_wait(bus, (uint64_t) -1); | |
2124 | if (r < 0) | |
2125 | return r; | |
2126 | } | |
2127 | } | |
2128 | ||
97f82db3 | 2129 | _public_ int sd_bus_call( |
de1c301e | 2130 | sd_bus *bus, |
97f82db3 | 2131 | sd_bus_message *_m, |
de1c301e LP |
2132 | uint64_t usec, |
2133 | sd_bus_error *error, | |
2134 | sd_bus_message **reply) { | |
2135 | ||
4afd3348 | 2136 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = sd_bus_message_ref(_m); |
de1c301e | 2137 | usec_t timeout; |
693eb9a2 | 2138 | uint64_t cookie; |
143d4e04 | 2139 | size_t i; |
7d22c717 | 2140 | int r; |
de1c301e | 2141 | |
759e02e7 LP |
2142 | bus_assert_return(m, -EINVAL, error); |
2143 | bus_assert_return(m->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EINVAL, error); | |
2144 | bus_assert_return(!(m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED), -EINVAL, error); | |
2145 | bus_assert_return(!bus_error_is_dirty(error), -EINVAL, error); | |
9030ca46 LP |
2146 | |
2147 | if (!bus) | |
2148 | bus = m->bus; | |
2149 | ||
759e02e7 | 2150 | bus_assert_return(!bus_pid_changed(bus), -ECHILD, error); |
97f82db3 | 2151 | |
759e02e7 LP |
2152 | if (!BUS_IS_OPEN(bus->state)) { |
2153 | r = -ENOTCONN; | |
2154 | goto fail; | |
2155 | } | |
a3d59cd1 | 2156 | |
97f82db3 KS |
2157 | r = bus_ensure_running(bus); |
2158 | if (r < 0) | |
759e02e7 | 2159 | goto fail; |
97f82db3 | 2160 | |
a43b9ca3 | 2161 | i = bus->rqueue_size; |
97f82db3 KS |
2162 | |
2163 | r = bus_seal_message(bus, m, usec); | |
2164 | if (r < 0) | |
759e02e7 | 2165 | goto fail; |
97f82db3 KS |
2166 | |
2167 | r = bus_remarshal_message(bus, &m); | |
2168 | if (r < 0) | |
759e02e7 | 2169 | goto fail; |
97f82db3 | 2170 | |
66baf8c6 | 2171 | r = sd_bus_send(bus, m, &cookie); |
de1c301e | 2172 | if (r < 0) |
759e02e7 | 2173 | goto fail; |
de1c301e | 2174 | |
ac8029fc | 2175 | timeout = calc_elapse(bus, m->timeout); |
de1c301e LP |
2176 | |
2177 | for (;;) { | |
2178 | usec_t left; | |
de1c301e | 2179 | |
7d22c717 | 2180 | while (i < bus->rqueue_size) { |
c1757a70 | 2181 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *incoming = NULL; |
7d22c717 | 2182 | |
c1757a70 | 2183 | incoming = sd_bus_message_ref(bus->rqueue[i]); |
89ffcd2a | 2184 | |
693eb9a2 | 2185 | if (incoming->reply_cookie == cookie) { |
de1c301e LP |
2186 | /* Found a match! */ |
2187 | ||
c1757a70 | 2188 | rqueue_drop_one(bus, i); |
f9f97ca6 | 2189 | log_debug_bus_message(incoming); |
7d22c717 | 2190 | |
40ca29a1 | 2191 | if (incoming->header->type == SD_BUS_MESSAGE_METHOD_RETURN) { |
b7f247e0 | 2192 | |
c7db1984 | 2193 | if (incoming->n_fds <= 0 || bus->accept_fd) { |
2ce97e2b | 2194 | if (reply) |
c1757a70 | 2195 | *reply = TAKE_PTR(incoming); |
2ce97e2b LP |
2196 | |
2197 | return 1; | |
2198 | } | |
2199 | ||
c1757a70 | 2200 | return sd_bus_error_setf(error, SD_BUS_ERROR_INCONSISTENT_MESSAGE, "Reply message contained file descriptors which I couldn't accept. Sorry."); |
b7f247e0 | 2201 | |
c1757a70 LP |
2202 | } else if (incoming->header->type == SD_BUS_MESSAGE_METHOD_ERROR) |
2203 | return sd_bus_error_copy(error, &incoming->error); | |
2204 | else { | |
a43b9ca3 | 2205 | r = -EIO; |
759e02e7 LP |
2206 | goto fail; |
2207 | } | |
a8a07f89 | 2208 | |
693eb9a2 | 2209 | } else if (BUS_MESSAGE_COOKIE(incoming) == cookie && |
a8a07f89 LP |
2210 | bus->unique_name && |
2211 | incoming->sender && | |
2212 | streq(bus->unique_name, incoming->sender)) { | |
2213 | ||
c1757a70 | 2214 | rqueue_drop_one(bus, i); |
7d22c717 | 2215 | |
c1757a70 LP |
2216 | /* Our own message? Somebody is trying to send its own client a message, |
2217 | * let's not dead-lock, let's fail immediately. */ | |
a8a07f89 | 2218 | |
759e02e7 LP |
2219 | r = -ELOOP; |
2220 | goto fail; | |
de1c301e LP |
2221 | } |
2222 | ||
de1c301e | 2223 | /* Try to read more, right-away */ |
7d22c717 | 2224 | i++; |
de1c301e | 2225 | } |
7d22c717 | 2226 | |
766c5809 | 2227 | r = bus_read_message(bus, false, 0); |
32f46480 | 2228 | if (r < 0) { |
f60a028a | 2229 | if (ERRNO_IS_DISCONNECT(r)) { |
32f46480 | 2230 | bus_enter_closing(bus); |
759e02e7 | 2231 | r = -ECONNRESET; |
441d56a1 | 2232 | } |
32f46480 | 2233 | |
759e02e7 | 2234 | goto fail; |
32f46480 | 2235 | } |
7d22c717 | 2236 | if (r > 0) |
e3017af9 | 2237 | continue; |
de1c301e LP |
2238 | |
2239 | if (timeout > 0) { | |
2240 | usec_t n; | |
2241 | ||
2242 | n = now(CLOCK_MONOTONIC); | |
759e02e7 LP |
2243 | if (n >= timeout) { |
2244 | r = -ETIMEDOUT; | |
2245 | goto fail; | |
2246 | } | |
de1c301e LP |
2247 | |
2248 | left = timeout - n; | |
2249 | } else | |
2250 | left = (uint64_t) -1; | |
2251 | ||
e3017af9 | 2252 | r = bus_poll(bus, true, left); |
de1c301e | 2253 | if (r < 0) |
759e02e7 LP |
2254 | goto fail; |
2255 | if (r == 0) { | |
2256 | r = -ETIMEDOUT; | |
2257 | goto fail; | |
2258 | } | |
de1c301e LP |
2259 | |
2260 | r = dispatch_wqueue(bus); | |
32f46480 | 2261 | if (r < 0) { |
f60a028a | 2262 | if (ERRNO_IS_DISCONNECT(r)) { |
32f46480 | 2263 | bus_enter_closing(bus); |
759e02e7 | 2264 | r = -ECONNRESET; |
441d56a1 | 2265 | } |
32f46480 | 2266 | |
759e02e7 | 2267 | goto fail; |
32f46480 | 2268 | } |
de1c301e | 2269 | } |
759e02e7 LP |
2270 | |
2271 | fail: | |
2272 | return sd_bus_error_set_errno(error, r); | |
de1c301e LP |
2273 | } |
2274 | ||
d9f644e2 | 2275 | _public_ int sd_bus_get_fd(sd_bus *bus) { |
d6888822 LP |
2276 | |
2277 | assert_return(bus, -EINVAL); | |
45b1f410 | 2278 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 LP |
2279 | assert_return(bus->input_fd == bus->output_fd, -EPERM); |
2280 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
de1c301e | 2281 | |
8a5cd31e LP |
2282 | if (bus->state == BUS_CLOSED) |
2283 | return -ENOTCONN; | |
2284 | ||
2285 | if (bus->inotify_fd >= 0) | |
2286 | return bus->inotify_fd; | |
2287 | ||
2288 | if (bus->input_fd >= 0) | |
2289 | return bus->input_fd; | |
2290 | ||
2291 | return -ENOTCONN; | |
de1c301e LP |
2292 | } |
2293 | ||
d9f644e2 | 2294 | _public_ int sd_bus_get_events(sd_bus *bus) { |
de1c301e LP |
2295 | int flags = 0; |
2296 | ||
d6888822 | 2297 | assert_return(bus, -EINVAL); |
45b1f410 | 2298 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 | 2299 | assert_return(!bus_pid_changed(bus), -ECHILD); |
de1c301e | 2300 | |
8a5cd31e LP |
2301 | switch (bus->state) { |
2302 | ||
2303 | case BUS_UNSET: | |
2304 | case BUS_CLOSED: | |
a3d59cd1 LP |
2305 | return -ENOTCONN; |
2306 | ||
8a5cd31e LP |
2307 | case BUS_WATCH_BIND: |
2308 | flags |= POLLIN; | |
2309 | break; | |
2310 | ||
2311 | case BUS_OPENING: | |
de1c301e | 2312 | flags |= POLLOUT; |
8a5cd31e | 2313 | break; |
89ffcd2a | 2314 | |
8a5cd31e | 2315 | case BUS_AUTHENTICATING: |
2181a7f5 | 2316 | if (bus_socket_auth_needs_write(bus)) |
89ffcd2a LP |
2317 | flags |= POLLOUT; |
2318 | ||
2319 | flags |= POLLIN; | |
8a5cd31e | 2320 | break; |
89ffcd2a | 2321 | |
8a5cd31e LP |
2322 | case BUS_RUNNING: |
2323 | case BUS_HELLO: | |
de1c301e LP |
2324 | if (bus->rqueue_size <= 0) |
2325 | flags |= POLLIN; | |
2326 | if (bus->wqueue_size > 0) | |
2327 | flags |= POLLOUT; | |
8a5cd31e LP |
2328 | break; |
2329 | ||
2330 | case BUS_CLOSING: | |
2331 | break; | |
2332 | ||
2333 | default: | |
2334 | assert_not_reached("Unknown state"); | |
de1c301e LP |
2335 | } |
2336 | ||
2337 | return flags; | |
2338 | } | |
2339 | ||
d9f644e2 | 2340 | _public_ int sd_bus_get_timeout(sd_bus *bus, uint64_t *timeout_usec) { |
e3017af9 LP |
2341 | struct reply_callback *c; |
2342 | ||
d6888822 | 2343 | assert_return(bus, -EINVAL); |
45b1f410 | 2344 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 | 2345 | assert_return(timeout_usec, -EINVAL); |
d6888822 | 2346 | assert_return(!bus_pid_changed(bus), -ECHILD); |
e3017af9 | 2347 | |
a3d59cd1 LP |
2348 | if (!BUS_IS_OPEN(bus->state) && bus->state != BUS_CLOSING) |
2349 | return -ENOTCONN; | |
2350 | ||
8f8f05a9 LP |
2351 | if (bus->track_queue) { |
2352 | *timeout_usec = 0; | |
2353 | return 1; | |
2354 | } | |
2355 | ||
8a5cd31e | 2356 | switch (bus->state) { |
718db961 | 2357 | |
8a5cd31e | 2358 | case BUS_AUTHENTICATING: |
e3017af9 LP |
2359 | *timeout_usec = bus->auth_timeout; |
2360 | return 1; | |
e3017af9 | 2361 | |
8a5cd31e LP |
2362 | case BUS_RUNNING: |
2363 | case BUS_HELLO: | |
2364 | if (bus->rqueue_size > 0) { | |
2365 | *timeout_usec = 0; | |
2366 | return 1; | |
2367 | } | |
2368 | ||
2369 | c = prioq_peek(bus->reply_callbacks_prioq); | |
2370 | if (!c) { | |
2371 | *timeout_usec = (uint64_t) -1; | |
2372 | return 0; | |
2373 | } | |
2374 | ||
ac8029fc | 2375 | if (c->timeout_usec == 0) { |
8a5cd31e LP |
2376 | *timeout_usec = (uint64_t) -1; |
2377 | return 0; | |
2378 | } | |
2379 | ||
ac8029fc | 2380 | *timeout_usec = c->timeout_usec; |
8a5cd31e | 2381 | return 1; |
e3017af9 | 2382 | |
8a5cd31e | 2383 | case BUS_CLOSING: |
8efd6381 LP |
2384 | *timeout_usec = 0; |
2385 | return 1; | |
8efd6381 | 2386 | |
8a5cd31e LP |
2387 | case BUS_WATCH_BIND: |
2388 | case BUS_OPENING: | |
adee69fa | 2389 | *timeout_usec = (uint64_t) -1; |
e3017af9 LP |
2390 | return 0; |
2391 | ||
8a5cd31e LP |
2392 | default: |
2393 | assert_not_reached("Unknown or unexpected stat"); | |
19befb2d | 2394 | } |
e3017af9 LP |
2395 | } |
2396 | ||
2397 | static int process_timeout(sd_bus *bus) { | |
4afd3348 LP |
2398 | _cleanup_(sd_bus_error_free) sd_bus_error error_buffer = SD_BUS_ERROR_NULL; |
2399 | _cleanup_(sd_bus_message_unrefp) sd_bus_message* m = NULL; | |
e3017af9 | 2400 | struct reply_callback *c; |
1b64f838 | 2401 | sd_bus_slot *slot; |
b057498a | 2402 | bool is_hello; |
e3017af9 LP |
2403 | usec_t n; |
2404 | int r; | |
2405 | ||
2406 | assert(bus); | |
ac8029fc | 2407 | assert(IN_SET(bus->state, BUS_RUNNING, BUS_HELLO)); |
e3017af9 LP |
2408 | |
2409 | c = prioq_peek(bus->reply_callbacks_prioq); | |
2410 | if (!c) | |
2411 | return 0; | |
2412 | ||
2413 | n = now(CLOCK_MONOTONIC); | |
ac8029fc | 2414 | if (c->timeout_usec > n) |
e3017af9 LP |
2415 | return 0; |
2416 | ||
eb01ba5d LP |
2417 | r = bus_message_new_synthetic_error( |
2418 | bus, | |
693eb9a2 | 2419 | c->cookie, |
14c24659 | 2420 | &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_NO_REPLY, "Method call timed out"), |
eb01ba5d LP |
2421 | &m); |
2422 | if (r < 0) | |
2423 | return r; | |
2424 | ||
f1617a3b LP |
2425 | m->read_counter = ++bus->read_counter; |
2426 | ||
7adc46fc | 2427 | r = bus_seal_synthetic_message(bus, m); |
718db961 LP |
2428 | if (r < 0) |
2429 | return r; | |
2430 | ||
e3017af9 | 2431 | assert_se(prioq_pop(bus->reply_callbacks_prioq) == c); |
ac8029fc | 2432 | c->timeout_usec = 0; |
19befb2d | 2433 | |
c9fe4af7 | 2434 | ordered_hashmap_remove(bus->reply_callbacks, &c->cookie); |
19befb2d LP |
2435 | c->cookie = 0; |
2436 | ||
1b64f838 | 2437 | slot = container_of(c, sd_bus_slot, reply_callback); |
e3017af9 | 2438 | |
313cefa1 | 2439 | bus->iteration_counter++; |
718db961 | 2440 | |
b057498a LP |
2441 | is_hello = bus->state == BUS_HELLO && c->callback == hello_callback; |
2442 | ||
1b64f838 LP |
2443 | bus->current_message = m; |
2444 | bus->current_slot = sd_bus_slot_ref(slot); | |
caa82984 LP |
2445 | bus->current_handler = c->callback; |
2446 | bus->current_userdata = slot->userdata; | |
19070062 | 2447 | r = c->callback(m, slot->userdata, &error_buffer); |
caa82984 LP |
2448 | bus->current_userdata = NULL; |
2449 | bus->current_handler = NULL; | |
d974ad05 | 2450 | bus->current_slot = NULL; |
19befb2d | 2451 | bus->current_message = NULL; |
718db961 | 2452 | |
2e7e8e34 YW |
2453 | if (slot->floating) |
2454 | bus_slot_disconnect(slot, true); | |
1b64f838 | 2455 | |
d974ad05 DH |
2456 | sd_bus_slot_unref(slot); |
2457 | ||
8a5cd31e LP |
2458 | /* When this is the hello message and it timed out, then make sure to propagate the error up, don't just log |
2459 | * and ignore the callback handler's return value. */ | |
b057498a LP |
2460 | if (is_hello) |
2461 | return r; | |
2462 | ||
1b64f838 | 2463 | return bus_maybe_reply_error(m, r, &error_buffer); |
e3017af9 LP |
2464 | } |
2465 | ||
9d373862 LP |
2466 | static int process_hello(sd_bus *bus, sd_bus_message *m) { |
2467 | assert(bus); | |
2468 | assert(m); | |
2469 | ||
2470 | if (bus->state != BUS_HELLO) | |
2471 | return 0; | |
2472 | ||
2473 | /* Let's make sure the first message on the bus is the HELLO | |
2474 | * reply. But note that we don't actually parse the message | |
2181a7f5 LP |
2475 | * here (we leave that to the usual handling), we just verify |
2476 | * we don't let any earlier msg through. */ | |
9d373862 | 2477 | |
945c2931 | 2478 | if (!IN_SET(m->header->type, SD_BUS_MESSAGE_METHOD_RETURN, SD_BUS_MESSAGE_METHOD_ERROR)) |
9d373862 LP |
2479 | return -EIO; |
2480 | ||
19befb2d | 2481 | if (m->reply_cookie != 1) |
9d373862 LP |
2482 | return -EIO; |
2483 | ||
2484 | return 0; | |
2485 | } | |
2486 | ||
a652755d | 2487 | static int process_reply(sd_bus *bus, sd_bus_message *m) { |
4afd3348 LP |
2488 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *synthetic_reply = NULL; |
2489 | _cleanup_(sd_bus_error_free) sd_bus_error error_buffer = SD_BUS_ERROR_NULL; | |
19befb2d | 2490 | struct reply_callback *c; |
1b64f838 | 2491 | sd_bus_slot *slot; |
b057498a | 2492 | bool is_hello; |
a652755d LP |
2493 | int r; |
2494 | ||
2495 | assert(bus); | |
2496 | assert(m); | |
2497 | ||
945c2931 | 2498 | if (!IN_SET(m->header->type, SD_BUS_MESSAGE_METHOD_RETURN, SD_BUS_MESSAGE_METHOD_ERROR)) |
a652755d LP |
2499 | return 0; |
2500 | ||
09365592 LP |
2501 | if (m->destination && bus->unique_name && !streq_ptr(m->destination, bus->unique_name)) |
2502 | return 0; | |
2503 | ||
c9fe4af7 | 2504 | c = ordered_hashmap_remove(bus->reply_callbacks, &m->reply_cookie); |
a652755d LP |
2505 | if (!c) |
2506 | return 0; | |
2507 | ||
19befb2d | 2508 | c->cookie = 0; |
19befb2d | 2509 | |
1b64f838 | 2510 | slot = container_of(c, sd_bus_slot, reply_callback); |
a652755d | 2511 | |
c7db1984 | 2512 | if (m->n_fds > 0 && !bus->accept_fd) { |
2ce97e2b LP |
2513 | |
2514 | /* If the reply contained a file descriptor which we | |
2515 | * didn't want we pass an error instead. */ | |
2516 | ||
2517 | r = bus_message_new_synthetic_error( | |
2518 | bus, | |
2519 | m->reply_cookie, | |
2520 | &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_INCONSISTENT_MESSAGE, "Reply message contained file descriptor"), | |
2521 | &synthetic_reply); | |
2522 | if (r < 0) | |
1b64f838 | 2523 | return r; |
2ce97e2b | 2524 | |
52cd5877 LP |
2525 | /* Copy over original timestamp */ |
2526 | synthetic_reply->realtime = m->realtime; | |
2527 | synthetic_reply->monotonic = m->monotonic; | |
2528 | synthetic_reply->seqnum = m->seqnum; | |
f1617a3b | 2529 | synthetic_reply->read_counter = m->read_counter; |
52cd5877 | 2530 | |
2ce97e2b LP |
2531 | r = bus_seal_synthetic_message(bus, synthetic_reply); |
2532 | if (r < 0) | |
1b64f838 | 2533 | return r; |
2ce97e2b LP |
2534 | |
2535 | m = synthetic_reply; | |
2536 | } else { | |
2537 | r = sd_bus_message_rewind(m, true); | |
2538 | if (r < 0) | |
1b64f838 | 2539 | return r; |
2ce97e2b | 2540 | } |
88fe224c | 2541 | |
ac8029fc | 2542 | if (c->timeout_usec != 0) { |
1b64f838 | 2543 | prioq_remove(bus->reply_callbacks_prioq, c, &c->prioq_idx); |
ac8029fc | 2544 | c->timeout_usec = 0; |
1b64f838 | 2545 | } |
19befb2d | 2546 | |
b057498a LP |
2547 | is_hello = bus->state == BUS_HELLO && c->callback == hello_callback; |
2548 | ||
1b64f838 | 2549 | bus->current_slot = sd_bus_slot_ref(slot); |
caa82984 LP |
2550 | bus->current_handler = c->callback; |
2551 | bus->current_userdata = slot->userdata; | |
19070062 | 2552 | r = c->callback(m, slot->userdata, &error_buffer); |
caa82984 LP |
2553 | bus->current_userdata = NULL; |
2554 | bus->current_handler = NULL; | |
d974ad05 | 2555 | bus->current_slot = NULL; |
a652755d | 2556 | |
2e7e8e34 YW |
2557 | if (slot->floating) |
2558 | bus_slot_disconnect(slot, true); | |
19befb2d | 2559 | |
d974ad05 DH |
2560 | sd_bus_slot_unref(slot); |
2561 | ||
8a5cd31e LP |
2562 | /* When this is the hello message and it failed, then make sure to propagate the error up, don't just log and |
2563 | * ignore the callback handler's return value. */ | |
b057498a LP |
2564 | if (is_hello) |
2565 | return r; | |
2566 | ||
1b64f838 | 2567 | return bus_maybe_reply_error(m, r, &error_buffer); |
a652755d LP |
2568 | } |
2569 | ||
2570 | static int process_filter(sd_bus *bus, sd_bus_message *m) { | |
4afd3348 | 2571 | _cleanup_(sd_bus_error_free) sd_bus_error error_buffer = SD_BUS_ERROR_NULL; |
a652755d LP |
2572 | struct filter_callback *l; |
2573 | int r; | |
2574 | ||
392d5b37 LP |
2575 | assert(bus); |
2576 | assert(m); | |
2577 | ||
7286037f LP |
2578 | do { |
2579 | bus->filter_callbacks_modified = false; | |
2580 | ||
2581 | LIST_FOREACH(callbacks, l, bus->filter_callbacks) { | |
1b64f838 | 2582 | sd_bus_slot *slot; |
7286037f LP |
2583 | |
2584 | if (bus->filter_callbacks_modified) | |
2585 | break; | |
2586 | ||
2587 | /* Don't run this more than once per iteration */ | |
2588 | if (l->last_iteration == bus->iteration_counter) | |
2589 | continue; | |
2590 | ||
2591 | l->last_iteration = bus->iteration_counter; | |
2592 | ||
88fe224c LP |
2593 | r = sd_bus_message_rewind(m, true); |
2594 | if (r < 0) | |
2595 | return r; | |
2596 | ||
1b64f838 LP |
2597 | slot = container_of(l, sd_bus_slot, filter_callback); |
2598 | ||
2599 | bus->current_slot = sd_bus_slot_ref(slot); | |
caa82984 LP |
2600 | bus->current_handler = l->callback; |
2601 | bus->current_userdata = slot->userdata; | |
19070062 | 2602 | r = l->callback(m, slot->userdata, &error_buffer); |
caa82984 LP |
2603 | bus->current_userdata = NULL; |
2604 | bus->current_handler = NULL; | |
1b64f838 | 2605 | bus->current_slot = sd_bus_slot_unref(slot); |
19befb2d | 2606 | |
ebcf1f97 | 2607 | r = bus_maybe_reply_error(m, r, &error_buffer); |
7286037f LP |
2608 | if (r != 0) |
2609 | return r; | |
2610 | ||
2611 | } | |
2612 | ||
2613 | } while (bus->filter_callbacks_modified); | |
a652755d LP |
2614 | |
2615 | return 0; | |
2616 | } | |
2617 | ||
392d5b37 | 2618 | static int process_match(sd_bus *bus, sd_bus_message *m) { |
7286037f LP |
2619 | int r; |
2620 | ||
392d5b37 LP |
2621 | assert(bus); |
2622 | assert(m); | |
2623 | ||
7286037f LP |
2624 | do { |
2625 | bus->match_callbacks_modified = false; | |
2626 | ||
eb01ba5d | 2627 | r = bus_match_run(bus, &bus->match_callbacks, m); |
7286037f LP |
2628 | if (r != 0) |
2629 | return r; | |
2630 | ||
2631 | } while (bus->match_callbacks_modified); | |
2632 | ||
2633 | return 0; | |
392d5b37 LP |
2634 | } |
2635 | ||
b9bf7e2b | 2636 | static int process_builtin(sd_bus *bus, sd_bus_message *m) { |
4afd3348 | 2637 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; |
b9bf7e2b LP |
2638 | int r; |
2639 | ||
2640 | assert(bus); | |
2641 | assert(m); | |
2642 | ||
c7db1984 | 2643 | if (bus->is_monitor) |
09365592 LP |
2644 | return 0; |
2645 | ||
758bf0c7 LP |
2646 | if (bus->manual_peer_interface) |
2647 | return 0; | |
2648 | ||
40ca29a1 | 2649 | if (m->header->type != SD_BUS_MESSAGE_METHOD_CALL) |
b9bf7e2b LP |
2650 | return 0; |
2651 | ||
2652 | if (!streq_ptr(m->interface, "org.freedesktop.DBus.Peer")) | |
2653 | return 0; | |
2654 | ||
0461f8cd | 2655 | if (m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED) |
b9bf7e2b LP |
2656 | return 1; |
2657 | ||
2658 | if (streq_ptr(m->member, "Ping")) | |
df2d202e | 2659 | r = sd_bus_message_new_method_return(m, &reply); |
b9bf7e2b LP |
2660 | else if (streq_ptr(m->member, "GetMachineId")) { |
2661 | sd_id128_t id; | |
2662 | char sid[33]; | |
2663 | ||
2664 | r = sd_id128_get_machine(&id); | |
2665 | if (r < 0) | |
2666 | return r; | |
2667 | ||
df2d202e | 2668 | r = sd_bus_message_new_method_return(m, &reply); |
b9bf7e2b LP |
2669 | if (r < 0) |
2670 | return r; | |
2671 | ||
2672 | r = sd_bus_message_append(reply, "s", sd_id128_to_string(id, sid)); | |
2673 | } else { | |
29ddb38f | 2674 | r = sd_bus_message_new_method_errorf( |
df2d202e | 2675 | m, &reply, |
40ca29a1 | 2676 | SD_BUS_ERROR_UNKNOWN_METHOD, |
b9bf7e2b | 2677 | "Unknown method '%s' on interface '%s'.", m->member, m->interface); |
b9bf7e2b | 2678 | } |
b9bf7e2b LP |
2679 | if (r < 0) |
2680 | return r; | |
2681 | ||
2682 | r = sd_bus_send(bus, reply, NULL); | |
2683 | if (r < 0) | |
2684 | return r; | |
2685 | ||
2686 | return 1; | |
2687 | } | |
2688 | ||
2ce97e2b LP |
2689 | static int process_fd_check(sd_bus *bus, sd_bus_message *m) { |
2690 | assert(bus); | |
2691 | assert(m); | |
2692 | ||
2693 | /* If we got a message with a file descriptor which we didn't | |
2694 | * want to accept, then let's drop it. How can this even | |
2695 | * happen? For example, when the kernel queues a message into | |
2696 | * an activatable names's queue which allows fds, and then is | |
2697 | * delivered to us later even though we ourselves did not | |
2698 | * negotiate it. */ | |
2699 | ||
c7db1984 | 2700 | if (bus->is_monitor) |
09365592 LP |
2701 | return 0; |
2702 | ||
2ce97e2b LP |
2703 | if (m->n_fds <= 0) |
2704 | return 0; | |
2705 | ||
c7db1984 | 2706 | if (bus->accept_fd) |
2ce97e2b LP |
2707 | return 0; |
2708 | ||
2709 | if (m->header->type != SD_BUS_MESSAGE_METHOD_CALL) | |
2710 | return 1; /* just eat it up */ | |
2711 | ||
2712 | return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INCONSISTENT_MESSAGE, "Message contains file descriptors, which I cannot accept. Sorry."); | |
2713 | } | |
2714 | ||
992c052c | 2715 | static int process_message(sd_bus *bus, sd_bus_message *m) { |
e3017af9 LP |
2716 | int r; |
2717 | ||
2718 | assert(bus); | |
992c052c | 2719 | assert(m); |
e3017af9 | 2720 | |
19befb2d | 2721 | bus->current_message = m; |
992c052c | 2722 | bus->iteration_counter++; |
e3017af9 | 2723 | |
f9f97ca6 | 2724 | log_debug_bus_message(m); |
40ca29a1 | 2725 | |
992c052c LP |
2726 | r = process_hello(bus, m); |
2727 | if (r != 0) | |
affff0b6 | 2728 | goto finish; |
a652755d | 2729 | |
992c052c LP |
2730 | r = process_reply(bus, m); |
2731 | if (r != 0) | |
affff0b6 | 2732 | goto finish; |
e3017af9 | 2733 | |
2ce97e2b LP |
2734 | r = process_fd_check(bus, m); |
2735 | if (r != 0) | |
2736 | goto finish; | |
2737 | ||
992c052c LP |
2738 | r = process_filter(bus, m); |
2739 | if (r != 0) | |
affff0b6 | 2740 | goto finish; |
a652755d | 2741 | |
992c052c LP |
2742 | r = process_match(bus, m); |
2743 | if (r != 0) | |
affff0b6 | 2744 | goto finish; |
a652755d | 2745 | |
992c052c LP |
2746 | r = process_builtin(bus, m); |
2747 | if (r != 0) | |
affff0b6 LP |
2748 | goto finish; |
2749 | ||
2750 | r = bus_process_object(bus, m); | |
a652755d | 2751 | |
affff0b6 | 2752 | finish: |
19befb2d | 2753 | bus->current_message = NULL; |
affff0b6 | 2754 | return r; |
29ddb38f | 2755 | } |
88fe224c | 2756 | |
8f8f05a9 LP |
2757 | static int dispatch_track(sd_bus *bus) { |
2758 | assert(bus); | |
2759 | ||
2760 | if (!bus->track_queue) | |
2761 | return 0; | |
2762 | ||
2763 | bus_track_dispatch(bus->track_queue); | |
2764 | return 1; | |
2765 | } | |
2766 | ||
766c5809 | 2767 | static int process_running(sd_bus *bus, bool hint_priority, int64_t priority, sd_bus_message **ret) { |
4afd3348 | 2768 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; |
29ddb38f | 2769 | int r; |
a652755d | 2770 | |
29ddb38f | 2771 | assert(bus); |
945c2931 | 2772 | assert(IN_SET(bus->state, BUS_RUNNING, BUS_HELLO)); |
7286037f | 2773 | |
992c052c LP |
2774 | r = process_timeout(bus); |
2775 | if (r != 0) | |
2776 | goto null_message; | |
7286037f | 2777 | |
992c052c LP |
2778 | r = dispatch_wqueue(bus); |
2779 | if (r != 0) | |
2780 | goto null_message; | |
7286037f | 2781 | |
8f8f05a9 LP |
2782 | r = dispatch_track(bus); |
2783 | if (r != 0) | |
2784 | goto null_message; | |
2785 | ||
766c5809 | 2786 | r = dispatch_rqueue(bus, hint_priority, priority, &m); |
992c052c LP |
2787 | if (r < 0) |
2788 | return r; | |
2789 | if (!m) | |
2790 | goto null_message; | |
7286037f | 2791 | |
992c052c LP |
2792 | r = process_message(bus, m); |
2793 | if (r != 0) | |
2794 | goto null_message; | |
7286037f | 2795 | |
992c052c LP |
2796 | if (ret) { |
2797 | r = sd_bus_message_rewind(m, true); | |
29ddb38f LP |
2798 | if (r < 0) |
2799 | return r; | |
e3017af9 | 2800 | |
1cc6c93a | 2801 | *ret = TAKE_PTR(m); |
992c052c LP |
2802 | return 1; |
2803 | } | |
a652755d | 2804 | |
40ca29a1 | 2805 | if (m->header->type == SD_BUS_MESSAGE_METHOD_CALL) { |
a652755d | 2806 | |
dc74ce9b LP |
2807 | log_debug("Unprocessed message call sender=%s object=%s interface=%s member=%s", |
2808 | strna(sd_bus_message_get_sender(m)), | |
2809 | strna(sd_bus_message_get_path(m)), | |
2810 | strna(sd_bus_message_get_interface(m)), | |
2811 | strna(sd_bus_message_get_member(m))); | |
2812 | ||
992c052c | 2813 | r = sd_bus_reply_method_errorf( |
df2d202e | 2814 | m, |
40ca29a1 | 2815 | SD_BUS_ERROR_UNKNOWN_OBJECT, |
992c052c | 2816 | "Unknown object '%s'.", m->path); |
29ddb38f LP |
2817 | if (r < 0) |
2818 | return r; | |
2819 | } | |
e3017af9 | 2820 | |
992c052c | 2821 | return 1; |
0a72c2bd | 2822 | |
992c052c LP |
2823 | null_message: |
2824 | if (r >= 0 && ret) | |
2825 | *ret = NULL; | |
0a72c2bd | 2826 | |
992c052c | 2827 | return r; |
29ddb38f | 2828 | } |
0a72c2bd | 2829 | |
fbb4603d LP |
2830 | static int bus_exit_now(sd_bus *bus) { |
2831 | assert(bus); | |
2832 | ||
2833 | /* Exit due to close, if this is requested. If this is bus object is attached to an event source, invokes | |
2834 | * sd_event_exit(), otherwise invokes libc exit(). */ | |
2835 | ||
2836 | if (bus->exited) /* did we already exit? */ | |
2837 | return 0; | |
2838 | if (!bus->exit_triggered) /* was the exit condition triggered? */ | |
2839 | return 0; | |
2840 | if (!bus->exit_on_disconnect) /* Shall we actually exit on disconnection? */ | |
2841 | return 0; | |
2842 | ||
2843 | bus->exited = true; /* never exit more than once */ | |
2844 | ||
2845 | log_debug("Bus connection disconnected, exiting."); | |
2846 | ||
2847 | if (bus->event) | |
2848 | return sd_event_exit(bus->event, EXIT_FAILURE); | |
2849 | else | |
2850 | exit(EXIT_FAILURE); | |
2851 | ||
2852 | assert_not_reached("exit() didn't exit?"); | |
2853 | } | |
2854 | ||
217fcc7e LP |
2855 | static int process_closing_reply_callback(sd_bus *bus, struct reply_callback *c) { |
2856 | _cleanup_(sd_bus_error_free) sd_bus_error error_buffer = SD_BUS_ERROR_NULL; | |
4afd3348 | 2857 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; |
217fcc7e | 2858 | sd_bus_slot *slot; |
718db961 LP |
2859 | int r; |
2860 | ||
2861 | assert(bus); | |
217fcc7e | 2862 | assert(c); |
718db961 | 2863 | |
217fcc7e LP |
2864 | r = bus_message_new_synthetic_error( |
2865 | bus, | |
2866 | c->cookie, | |
2867 | &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_NO_REPLY, "Connection terminated"), | |
2868 | &m); | |
2869 | if (r < 0) | |
2870 | return r; | |
ebcf1f97 | 2871 | |
f1617a3b LP |
2872 | m->read_counter = ++bus->read_counter; |
2873 | ||
217fcc7e LP |
2874 | r = bus_seal_synthetic_message(bus, m); |
2875 | if (r < 0) | |
2876 | return r; | |
718db961 | 2877 | |
ac8029fc | 2878 | if (c->timeout_usec != 0) { |
217fcc7e | 2879 | prioq_remove(bus->reply_callbacks_prioq, c, &c->prioq_idx); |
ac8029fc | 2880 | c->timeout_usec = 0; |
217fcc7e | 2881 | } |
718db961 | 2882 | |
217fcc7e LP |
2883 | ordered_hashmap_remove(bus->reply_callbacks, &c->cookie); |
2884 | c->cookie = 0; | |
2885 | ||
2886 | slot = container_of(c, sd_bus_slot, reply_callback); | |
718db961 | 2887 | |
217fcc7e | 2888 | bus->iteration_counter++; |
19befb2d | 2889 | |
217fcc7e LP |
2890 | bus->current_message = m; |
2891 | bus->current_slot = sd_bus_slot_ref(slot); | |
2892 | bus->current_handler = c->callback; | |
2893 | bus->current_userdata = slot->userdata; | |
2894 | r = c->callback(m, slot->userdata, &error_buffer); | |
2895 | bus->current_userdata = NULL; | |
2896 | bus->current_handler = NULL; | |
2897 | bus->current_slot = NULL; | |
2898 | bus->current_message = NULL; | |
718db961 | 2899 | |
2e7e8e34 YW |
2900 | if (slot->floating) |
2901 | bus_slot_disconnect(slot, true); | |
718db961 | 2902 | |
217fcc7e | 2903 | sd_bus_slot_unref(slot); |
1b64f838 | 2904 | |
217fcc7e LP |
2905 | return bus_maybe_reply_error(m, r, &error_buffer); |
2906 | } | |
718db961 | 2907 | |
217fcc7e LP |
2908 | static int process_closing(sd_bus *bus, sd_bus_message **ret) { |
2909 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; | |
2910 | struct reply_callback *c; | |
2911 | int r; | |
d974ad05 | 2912 | |
217fcc7e LP |
2913 | assert(bus); |
2914 | assert(bus->state == BUS_CLOSING); | |
2915 | ||
2916 | /* First, fail all outstanding method calls */ | |
2917 | c = ordered_hashmap_first(bus->reply_callbacks); | |
2918 | if (c) | |
2919 | return process_closing_reply_callback(bus, c); | |
718db961 | 2920 | |
232f3677 LP |
2921 | /* Then, fake-drop all remaining bus tracking references */ |
2922 | if (bus->tracks) { | |
2923 | bus_track_close(bus->tracks); | |
2924 | return 1; | |
2925 | } | |
2926 | ||
718db961 LP |
2927 | /* Then, synthesize a Disconnected message */ |
2928 | r = sd_bus_message_new_signal( | |
2929 | bus, | |
151b9b96 | 2930 | &m, |
718db961 LP |
2931 | "/org/freedesktop/DBus/Local", |
2932 | "org.freedesktop.DBus.Local", | |
151b9b96 | 2933 | "Disconnected"); |
718db961 LP |
2934 | if (r < 0) |
2935 | return r; | |
2936 | ||
fb6d9b77 | 2937 | bus_message_set_sender_local(bus, m); |
f1617a3b | 2938 | m->read_counter = ++bus->read_counter; |
34a2c9e8 | 2939 | |
7adc46fc | 2940 | r = bus_seal_synthetic_message(bus, m); |
718db961 LP |
2941 | if (r < 0) |
2942 | return r; | |
2943 | ||
2944 | sd_bus_close(bus); | |
2945 | ||
19befb2d | 2946 | bus->current_message = m; |
718db961 LP |
2947 | bus->iteration_counter++; |
2948 | ||
2949 | r = process_filter(bus, m); | |
2950 | if (r != 0) | |
2951 | goto finish; | |
2952 | ||
2953 | r = process_match(bus, m); | |
2954 | if (r != 0) | |
2955 | goto finish; | |
2956 | ||
fbb4603d LP |
2957 | /* Nothing else to do, exit now, if the condition holds */ |
2958 | bus->exit_triggered = true; | |
2959 | (void) bus_exit_now(bus); | |
2960 | ||
1cc6c93a YW |
2961 | if (ret) |
2962 | *ret = TAKE_PTR(m); | |
718db961 LP |
2963 | |
2964 | r = 1; | |
2965 | ||
2966 | finish: | |
19befb2d LP |
2967 | bus->current_message = NULL; |
2968 | ||
718db961 LP |
2969 | return r; |
2970 | } | |
2971 | ||
766c5809 | 2972 | static int bus_process_internal(sd_bus *bus, bool hint_priority, int64_t priority, sd_bus_message **ret) { |
29ddb38f | 2973 | int r; |
0a72c2bd | 2974 | |
992c052c LP |
2975 | /* Returns 0 when we didn't do anything. This should cause the |
2976 | * caller to invoke sd_bus_wait() before returning the next | |
2977 | * time. Returns > 0 when we did something, which possibly | |
2978 | * means *ret is filled in with an unprocessed message. */ | |
0a72c2bd | 2979 | |
d6888822 | 2980 | assert_return(bus, -EINVAL); |
45b1f410 | 2981 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 | 2982 | assert_return(!bus_pid_changed(bus), -ECHILD); |
0a72c2bd | 2983 | |
992c052c | 2984 | /* We don't allow recursively invoking sd_bus_process(). */ |
19befb2d | 2985 | assert_return(!bus->current_message, -EBUSY); |
6d77a30c | 2986 | assert(!bus->current_slot); /* This should be NULL whenever bus->current_message is */ |
0a72c2bd | 2987 | |
7ae8edcd ZJS |
2988 | BUS_DONT_DESTROY(bus); |
2989 | ||
992c052c | 2990 | switch (bus->state) { |
0a72c2bd | 2991 | |
992c052c | 2992 | case BUS_UNSET: |
992c052c | 2993 | return -ENOTCONN; |
0a72c2bd | 2994 | |
6d6f4904 LP |
2995 | case BUS_CLOSED: |
2996 | return -ECONNRESET; | |
2997 | ||
8a5cd31e LP |
2998 | case BUS_WATCH_BIND: |
2999 | r = bus_socket_process_watch_bind(bus); | |
3000 | break; | |
3001 | ||
992c052c LP |
3002 | case BUS_OPENING: |
3003 | r = bus_socket_process_opening(bus); | |
8a5cd31e | 3004 | break; |
a652755d | 3005 | |
992c052c | 3006 | case BUS_AUTHENTICATING: |
992c052c | 3007 | r = bus_socket_process_authenticating(bus); |
8a5cd31e | 3008 | break; |
a652755d | 3009 | |
992c052c LP |
3010 | case BUS_RUNNING: |
3011 | case BUS_HELLO: | |
766c5809 | 3012 | r = process_running(bus, hint_priority, priority, ret); |
8a5cd31e LP |
3013 | if (r >= 0) |
3014 | return r; | |
718db961 | 3015 | |
8a5cd31e LP |
3016 | /* This branch initializes *ret, hence we don't use the generic error checking below */ |
3017 | break; | |
718db961 LP |
3018 | |
3019 | case BUS_CLOSING: | |
3020 | return process_closing(bus, ret); | |
8a5cd31e LP |
3021 | |
3022 | default: | |
3023 | assert_not_reached("Unknown state"); | |
992c052c | 3024 | } |
43a43f50 | 3025 | |
f60a028a | 3026 | if (ERRNO_IS_DISCONNECT(r)) { |
8a5cd31e LP |
3027 | bus_enter_closing(bus); |
3028 | r = 1; | |
3029 | } else if (r < 0) | |
3030 | return r; | |
3031 | ||
3032 | if (ret) | |
3033 | *ret = NULL; | |
3034 | ||
3035 | return r; | |
e3017af9 LP |
3036 | } |
3037 | ||
766c5809 LP |
3038 | _public_ int sd_bus_process(sd_bus *bus, sd_bus_message **ret) { |
3039 | return bus_process_internal(bus, false, 0, ret); | |
3040 | } | |
3041 | ||
3042 | _public_ int sd_bus_process_priority(sd_bus *bus, int64_t priority, sd_bus_message **ret) { | |
3043 | return bus_process_internal(bus, true, priority, ret); | |
3044 | } | |
3045 | ||
992c052c LP |
3046 | static int bus_poll(sd_bus *bus, bool need_more, uint64_t timeout_usec) { |
3047 | struct pollfd p[2] = {}; | |
8a5cd31e | 3048 | int r, n; |
992c052c | 3049 | struct timespec ts; |
3a43da28 | 3050 | usec_t m = USEC_INFINITY; |
adcdb374 LP |
3051 | |
3052 | assert(bus); | |
718db961 LP |
3053 | |
3054 | if (bus->state == BUS_CLOSING) | |
3055 | return 1; | |
3056 | ||
a3d59cd1 LP |
3057 | if (!BUS_IS_OPEN(bus->state)) |
3058 | return -ENOTCONN; | |
adcdb374 | 3059 | |
8a5cd31e LP |
3060 | if (bus->state == BUS_WATCH_BIND) { |
3061 | assert(bus->inotify_fd >= 0); | |
adcdb374 | 3062 | |
8a5cd31e LP |
3063 | p[0].events = POLLIN; |
3064 | p[0].fd = bus->inotify_fd; | |
992c052c LP |
3065 | n = 1; |
3066 | } else { | |
8a5cd31e LP |
3067 | int e; |
3068 | ||
3069 | e = sd_bus_get_events(bus); | |
3070 | if (e < 0) | |
3071 | return e; | |
3072 | ||
3073 | if (need_more) | |
3074 | /* The caller really needs some more data, he doesn't | |
3075 | * care about what's already read, or any timeouts | |
3076 | * except its own. */ | |
3077 | e |= POLLIN; | |
3078 | else { | |
3079 | usec_t until; | |
3080 | /* The caller wants to process if there's something to | |
3081 | * process, but doesn't care otherwise */ | |
3082 | ||
3083 | r = sd_bus_get_timeout(bus, &until); | |
3084 | if (r < 0) | |
3085 | return r; | |
3086 | if (r > 0) | |
3087 | m = usec_sub_unsigned(until, now(CLOCK_MONOTONIC)); | |
3088 | } | |
3089 | ||
3090 | p[0].fd = bus->input_fd; | |
3091 | if (bus->output_fd == bus->input_fd) { | |
3092 | p[0].events = e; | |
3093 | n = 1; | |
3094 | } else { | |
3095 | p[0].events = e & POLLIN; | |
3096 | p[1].fd = bus->output_fd; | |
3097 | p[1].events = e & POLLOUT; | |
3098 | n = 2; | |
3099 | } | |
adcdb374 LP |
3100 | } |
3101 | ||
8a5cd31e LP |
3102 | if (timeout_usec != (uint64_t) -1 && (m == USEC_INFINITY || timeout_usec < m)) |
3103 | m = timeout_usec; | |
3104 | ||
3105 | r = ppoll(p, n, m == USEC_INFINITY ? NULL : timespec_store(&ts, m), NULL); | |
adcdb374 | 3106 | if (r < 0) |
992c052c | 3107 | return -errno; |
adcdb374 | 3108 | |
992c052c | 3109 | return r > 0 ? 1 : 0; |
adcdb374 LP |
3110 | } |
3111 | ||
d9f644e2 | 3112 | _public_ int sd_bus_wait(sd_bus *bus, uint64_t timeout_usec) { |
9db76355 | 3113 | |
d6888822 | 3114 | assert_return(bus, -EINVAL); |
45b1f410 | 3115 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 | 3116 | assert_return(!bus_pid_changed(bus), -ECHILD); |
9db76355 | 3117 | |
718db961 LP |
3118 | if (bus->state == BUS_CLOSING) |
3119 | return 0; | |
3120 | ||
a3d59cd1 LP |
3121 | if (!BUS_IS_OPEN(bus->state)) |
3122 | return -ENOTCONN; | |
718db961 | 3123 | |
992c052c LP |
3124 | if (bus->rqueue_size > 0) |
3125 | return 0; | |
9db76355 | 3126 | |
992c052c LP |
3127 | return bus_poll(bus, false, timeout_usec); |
3128 | } | |
9db76355 | 3129 | |
d9f644e2 | 3130 | _public_ int sd_bus_flush(sd_bus *bus) { |
992c052c | 3131 | int r; |
9db76355 | 3132 | |
d6888822 | 3133 | assert_return(bus, -EINVAL); |
45b1f410 | 3134 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 | 3135 | assert_return(!bus_pid_changed(bus), -ECHILD); |
9db76355 | 3136 | |
718db961 LP |
3137 | if (bus->state == BUS_CLOSING) |
3138 | return 0; | |
3139 | ||
a3d59cd1 LP |
3140 | if (!BUS_IS_OPEN(bus->state)) |
3141 | return -ENOTCONN; | |
718db961 | 3142 | |
8a5cd31e LP |
3143 | /* We never were connected? Don't hang in inotify for good, as there's no timeout set for it */ |
3144 | if (bus->state == BUS_WATCH_BIND) | |
3145 | return -EUNATCH; | |
3146 | ||
992c052c LP |
3147 | r = bus_ensure_running(bus); |
3148 | if (r < 0) | |
3149 | return r; | |
9db76355 | 3150 | |
992c052c LP |
3151 | if (bus->wqueue_size <= 0) |
3152 | return 0; | |
9db76355 | 3153 | |
992c052c LP |
3154 | for (;;) { |
3155 | r = dispatch_wqueue(bus); | |
32f46480 | 3156 | if (r < 0) { |
f60a028a | 3157 | if (ERRNO_IS_DISCONNECT(r)) { |
32f46480 | 3158 | bus_enter_closing(bus); |
441d56a1 LP |
3159 | return -ECONNRESET; |
3160 | } | |
32f46480 | 3161 | |
9db76355 | 3162 | return r; |
32f46480 | 3163 | } |
9db76355 | 3164 | |
992c052c LP |
3165 | if (bus->wqueue_size <= 0) |
3166 | return 0; | |
9db76355 | 3167 | |
992c052c | 3168 | r = bus_poll(bus, false, (uint64_t) -1); |
9db76355 LP |
3169 | if (r < 0) |
3170 | return r; | |
9db76355 | 3171 | } |
9db76355 LP |
3172 | } |
3173 | ||
19befb2d LP |
3174 | _public_ int sd_bus_add_filter( |
3175 | sd_bus *bus, | |
3176 | sd_bus_slot **slot, | |
3177 | sd_bus_message_handler_t callback, | |
3178 | void *userdata) { | |
d9f644e2 | 3179 | |
19befb2d | 3180 | sd_bus_slot *s; |
de1c301e | 3181 | |
d6888822 | 3182 | assert_return(bus, -EINVAL); |
45b1f410 | 3183 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 LP |
3184 | assert_return(callback, -EINVAL); |
3185 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
de1c301e | 3186 | |
19befb2d LP |
3187 | s = bus_slot_allocate(bus, !slot, BUS_FILTER_CALLBACK, sizeof(struct filter_callback), userdata); |
3188 | if (!s) | |
29ddb38f LP |
3189 | return -ENOMEM; |
3190 | ||
19befb2d | 3191 | s->filter_callback.callback = callback; |
a652755d | 3192 | |
19befb2d LP |
3193 | bus->filter_callbacks_modified = true; |
3194 | LIST_PREPEND(callbacks, bus->filter_callbacks, &s->filter_callback); | |
a652755d | 3195 | |
19befb2d LP |
3196 | if (slot) |
3197 | *slot = s; | |
29ddb38f | 3198 | |
992c052c | 3199 | return 0; |
a652755d | 3200 | } |
392d5b37 | 3201 | |
7593c7a4 LP |
3202 | static int add_match_callback( |
3203 | sd_bus_message *m, | |
3204 | void *userdata, | |
3205 | sd_bus_error *ret_error) { | |
3206 | ||
3207 | sd_bus_slot *match_slot = userdata; | |
3208 | bool failed = false; | |
3209 | int r; | |
3210 | ||
3211 | assert(m); | |
3212 | assert(match_slot); | |
3213 | ||
3214 | sd_bus_slot_ref(match_slot); | |
3215 | ||
3216 | if (sd_bus_message_is_method_error(m, NULL)) { | |
3217 | log_debug_errno(sd_bus_message_get_errno(m), | |
3218 | "Unable to add match %s, failing connection: %s", | |
3219 | match_slot->match_callback.match_string, | |
3220 | sd_bus_message_get_error(m)->message); | |
3221 | ||
3222 | failed = true; | |
3223 | } else | |
3224 | log_debug("Match %s successfully installed.", match_slot->match_callback.match_string); | |
3225 | ||
3226 | if (match_slot->match_callback.install_callback) { | |
3227 | sd_bus *bus; | |
3228 | ||
3229 | bus = sd_bus_message_get_bus(m); | |
3230 | ||
3231 | /* This function has been called as slot handler, and we want to call another slot handler. Let's | |
3232 | * update the slot callback metadata temporarily with our own data, and then revert back to the old | |
3233 | * values. */ | |
3234 | ||
3235 | assert(bus->current_slot == match_slot->match_callback.install_slot); | |
3236 | assert(bus->current_handler == add_match_callback); | |
3237 | assert(bus->current_userdata == userdata); | |
3238 | ||
3239 | bus->current_slot = match_slot; | |
3240 | bus->current_handler = match_slot->match_callback.install_callback; | |
3241 | bus->current_userdata = match_slot->userdata; | |
3242 | ||
3243 | r = match_slot->match_callback.install_callback(m, match_slot->userdata, ret_error); | |
3244 | ||
3245 | bus->current_slot = match_slot->match_callback.install_slot; | |
3246 | bus->current_handler = add_match_callback; | |
3247 | bus->current_userdata = userdata; | |
7593c7a4 LP |
3248 | } else { |
3249 | if (failed) /* Generic failure handling: destroy the connection */ | |
3250 | bus_enter_closing(sd_bus_message_get_bus(m)); | |
3251 | ||
3252 | r = 1; | |
3253 | } | |
3254 | ||
3cf8dd53 LP |
3255 | /* We don't need the install method reply slot anymore, let's free it */ |
3256 | match_slot->match_callback.install_slot = sd_bus_slot_unref(match_slot->match_callback.install_slot); | |
3257 | ||
2e7e8e34 YW |
3258 | if (failed && match_slot->floating) |
3259 | bus_slot_disconnect(match_slot, true); | |
7593c7a4 LP |
3260 | |
3261 | sd_bus_slot_unref(match_slot); | |
3262 | ||
3263 | return r; | |
3264 | } | |
3265 | ||
3266 | static int bus_add_match_full( | |
19befb2d LP |
3267 | sd_bus *bus, |
3268 | sd_bus_slot **slot, | |
7593c7a4 | 3269 | bool asynchronous, |
19befb2d LP |
3270 | const char *match, |
3271 | sd_bus_message_handler_t callback, | |
7593c7a4 | 3272 | sd_bus_message_handler_t install_callback, |
19befb2d | 3273 | void *userdata) { |
d9f644e2 | 3274 | |
992c052c LP |
3275 | struct bus_match_component *components = NULL; |
3276 | unsigned n_components = 0; | |
2915234d | 3277 | sd_bus_slot *s = NULL; |
992c052c | 3278 | int r = 0; |
392d5b37 | 3279 | |
d6888822 | 3280 | assert_return(bus, -EINVAL); |
45b1f410 | 3281 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 LP |
3282 | assert_return(match, -EINVAL); |
3283 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
392d5b37 | 3284 | |
992c052c LP |
3285 | r = bus_match_parse(match, &components, &n_components); |
3286 | if (r < 0) | |
3287 | goto finish; | |
29ddb38f | 3288 | |
19befb2d LP |
3289 | s = bus_slot_allocate(bus, !slot, BUS_MATCH_CALLBACK, sizeof(struct match_callback), userdata); |
3290 | if (!s) { | |
3291 | r = -ENOMEM; | |
3292 | goto finish; | |
3293 | } | |
3294 | ||
3295 | s->match_callback.callback = callback; | |
7593c7a4 | 3296 | s->match_callback.install_callback = install_callback; |
19befb2d | 3297 | |
992c052c | 3298 | if (bus->bus_client) { |
cc65fe5e | 3299 | enum bus_match_scope scope; |
29ddb38f | 3300 | |
cc65fe5e | 3301 | scope = bus_match_get_scope(components, n_components); |
19befb2d | 3302 | |
7593c7a4 | 3303 | /* Do not install server-side matches for matches against the local service, interface or bus path. */ |
9ee7a50c | 3304 | if (scope != BUS_MATCH_LOCAL) { |
cc65fe5e | 3305 | |
7593c7a4 | 3306 | /* We store the original match string, so that we can use it to remove the match again. */ |
cc65fe5e | 3307 | |
a132bef0 ZJS |
3308 | s->match_callback.match_string = strdup(match); |
3309 | if (!s->match_callback.match_string) { | |
3310 | r = -ENOMEM; | |
3311 | goto finish; | |
19befb2d | 3312 | } |
19befb2d | 3313 | |
fc2d4c89 | 3314 | if (asynchronous) { |
7593c7a4 LP |
3315 | r = bus_add_match_internal_async(bus, |
3316 | &s->match_callback.install_slot, | |
3317 | s->match_callback.match_string, | |
3318 | add_match_callback, | |
3319 | s); | |
fc2d4c89 LP |
3320 | |
3321 | if (r < 0) | |
3322 | return r; | |
3323 | ||
3324 | /* Make the slot of the match call floating now. We need the reference, but we don't | |
3325 | * want that this match pins the bus object, hence we first create it non-floating, but | |
3326 | * then make it floating. */ | |
3327 | r = sd_bus_slot_set_floating(s->match_callback.install_slot, true); | |
3328 | } else | |
6b39223c | 3329 | r = bus_add_match_internal(bus, s->match_callback.match_string, &s->match_callback.after); |
cc65fe5e LP |
3330 | if (r < 0) |
3331 | goto finish; | |
3332 | ||
3333 | s->match_added = true; | |
3334 | } | |
392d5b37 LP |
3335 | } |
3336 | ||
992c052c | 3337 | bus->match_callbacks_modified = true; |
19befb2d LP |
3338 | r = bus_match_add(&bus->match_callbacks, components, n_components, &s->match_callback); |
3339 | if (r < 0) | |
3340 | goto finish; | |
3341 | ||
3342 | if (slot) | |
3343 | *slot = s; | |
3344 | s = NULL; | |
917b5dc7 | 3345 | |
992c052c LP |
3346 | finish: |
3347 | bus_match_parse_free(components, n_components); | |
19befb2d LP |
3348 | sd_bus_slot_unref(s); |
3349 | ||
992c052c | 3350 | return r; |
917b5dc7 LP |
3351 | } |
3352 | ||
7593c7a4 LP |
3353 | _public_ int sd_bus_add_match( |
3354 | sd_bus *bus, | |
3355 | sd_bus_slot **slot, | |
3356 | const char *match, | |
3357 | sd_bus_message_handler_t callback, | |
3358 | void *userdata) { | |
3359 | ||
3360 | return bus_add_match_full(bus, slot, false, match, callback, NULL, userdata); | |
3361 | } | |
3362 | ||
3363 | _public_ int sd_bus_add_match_async( | |
3364 | sd_bus *bus, | |
3365 | sd_bus_slot **slot, | |
3366 | const char *match, | |
3367 | sd_bus_message_handler_t callback, | |
3368 | sd_bus_message_handler_t install_callback, | |
3369 | void *userdata) { | |
3370 | ||
3371 | return bus_add_match_full(bus, slot, true, match, callback, install_callback, userdata); | |
3372 | } | |
3373 | ||
992c052c LP |
3374 | bool bus_pid_changed(sd_bus *bus) { |
3375 | assert(bus); | |
f10dda3b | 3376 | |
992c052c LP |
3377 | /* We don't support people creating a bus connection and |
3378 | * keeping it around over a fork(). Let's complain. */ | |
d5a2b9a6 | 3379 | |
df0ff127 | 3380 | return bus->original_pid != getpid_cached(); |
d5a2b9a6 | 3381 | } |
40ca29a1 LP |
3382 | |
3383 | static int io_callback(sd_event_source *s, int fd, uint32_t revents, void *userdata) { | |
0927756b | 3384 | sd_bus *bus = userdata; |
40ca29a1 LP |
3385 | int r; |
3386 | ||
3387 | assert(bus); | |
3388 | ||
8a5cd31e LP |
3389 | /* Note that this is called both on input_fd, output_fd as well as inotify_fd events */ |
3390 | ||
40ca29a1 | 3391 | r = sd_bus_process(bus, NULL); |
5ae37ad8 LP |
3392 | if (r < 0) { |
3393 | log_debug_errno(r, "Processing of bus failed, closing down: %m"); | |
3394 | bus_enter_closing(bus); | |
3395 | } | |
40ca29a1 LP |
3396 | |
3397 | return 1; | |
3398 | } | |
3399 | ||
3400 | static int time_callback(sd_event_source *s, uint64_t usec, void *userdata) { | |
0927756b | 3401 | sd_bus *bus = userdata; |
40ca29a1 LP |
3402 | int r; |
3403 | ||
3404 | assert(bus); | |
3405 | ||
3406 | r = sd_bus_process(bus, NULL); | |
5ae37ad8 LP |
3407 | if (r < 0) { |
3408 | log_debug_errno(r, "Processing of bus failed, closing down: %m"); | |
3409 | bus_enter_closing(bus); | |
3410 | } | |
40ca29a1 LP |
3411 | |
3412 | return 1; | |
3413 | } | |
3414 | ||
3415 | static int prepare_callback(sd_event_source *s, void *userdata) { | |
3416 | sd_bus *bus = userdata; | |
3417 | int r, e; | |
3418 | usec_t until; | |
3419 | ||
3420 | assert(s); | |
3421 | assert(bus); | |
3422 | ||
3423 | e = sd_bus_get_events(bus); | |
5ae37ad8 LP |
3424 | if (e < 0) { |
3425 | r = e; | |
3426 | goto fail; | |
3427 | } | |
40ca29a1 LP |
3428 | |
3429 | if (bus->output_fd != bus->input_fd) { | |
3430 | ||
3431 | r = sd_event_source_set_io_events(bus->input_io_event_source, e & POLLIN); | |
3432 | if (r < 0) | |
5ae37ad8 | 3433 | goto fail; |
40ca29a1 LP |
3434 | |
3435 | r = sd_event_source_set_io_events(bus->output_io_event_source, e & POLLOUT); | |
5ae37ad8 | 3436 | } else |
40ca29a1 | 3437 | r = sd_event_source_set_io_events(bus->input_io_event_source, e); |
5ae37ad8 LP |
3438 | if (r < 0) |
3439 | goto fail; | |
40ca29a1 LP |
3440 | |
3441 | r = sd_bus_get_timeout(bus, &until); | |
3442 | if (r < 0) | |
5ae37ad8 | 3443 | goto fail; |
40ca29a1 LP |
3444 | if (r > 0) { |
3445 | int j; | |
3446 | ||
3447 | j = sd_event_source_set_time(bus->time_event_source, until); | |
5ae37ad8 LP |
3448 | if (j < 0) { |
3449 | r = j; | |
3450 | goto fail; | |
3451 | } | |
40ca29a1 LP |
3452 | } |
3453 | ||
3454 | r = sd_event_source_set_enabled(bus->time_event_source, r > 0); | |
3455 | if (r < 0) | |
5ae37ad8 LP |
3456 | goto fail; |
3457 | ||
3458 | return 1; | |
3459 | ||
3460 | fail: | |
3461 | log_debug_errno(r, "Preparing of bus events failed, closing down: %m"); | |
3462 | bus_enter_closing(bus); | |
40ca29a1 LP |
3463 | |
3464 | return 1; | |
3465 | } | |
3466 | ||
abc5fe72 LP |
3467 | static int quit_callback(sd_event_source *event, void *userdata) { |
3468 | sd_bus *bus = userdata; | |
3469 | ||
3470 | assert(event); | |
3471 | ||
c4e48030 LP |
3472 | if (bus->close_on_exit) { |
3473 | sd_bus_flush(bus); | |
3474 | sd_bus_close(bus); | |
3475 | } | |
abc5fe72 LP |
3476 | |
3477 | return 1; | |
3478 | } | |
3479 | ||
8a5cd31e | 3480 | int bus_attach_io_events(sd_bus *bus) { |
1e05d493 LP |
3481 | int r; |
3482 | ||
3483 | assert(bus); | |
3484 | ||
3485 | if (bus->input_fd < 0) | |
3486 | return 0; | |
3487 | ||
3488 | if (!bus->event) | |
3489 | return 0; | |
3490 | ||
3491 | if (!bus->input_io_event_source) { | |
151b9b96 | 3492 | r = sd_event_add_io(bus->event, &bus->input_io_event_source, bus->input_fd, 0, io_callback, bus); |
1e05d493 LP |
3493 | if (r < 0) |
3494 | return r; | |
3495 | ||
3496 | r = sd_event_source_set_prepare(bus->input_io_event_source, prepare_callback); | |
3497 | if (r < 0) | |
3498 | return r; | |
3499 | ||
3500 | r = sd_event_source_set_priority(bus->input_io_event_source, bus->event_priority); | |
9021bb9f TG |
3501 | if (r < 0) |
3502 | return r; | |
3503 | ||
356779df | 3504 | r = sd_event_source_set_description(bus->input_io_event_source, "bus-input"); |
1e05d493 LP |
3505 | } else |
3506 | r = sd_event_source_set_io_fd(bus->input_io_event_source, bus->input_fd); | |
3507 | ||
3508 | if (r < 0) | |
3509 | return r; | |
3510 | ||
3511 | if (bus->output_fd != bus->input_fd) { | |
3512 | assert(bus->output_fd >= 0); | |
3513 | ||
3514 | if (!bus->output_io_event_source) { | |
151b9b96 | 3515 | r = sd_event_add_io(bus->event, &bus->output_io_event_source, bus->output_fd, 0, io_callback, bus); |
1e05d493 LP |
3516 | if (r < 0) |
3517 | return r; | |
3518 | ||
3519 | r = sd_event_source_set_priority(bus->output_io_event_source, bus->event_priority); | |
9021bb9f TG |
3520 | if (r < 0) |
3521 | return r; | |
3522 | ||
356779df | 3523 | r = sd_event_source_set_description(bus->input_io_event_source, "bus-output"); |
1e05d493 LP |
3524 | } else |
3525 | r = sd_event_source_set_io_fd(bus->output_io_event_source, bus->output_fd); | |
3526 | ||
3527 | if (r < 0) | |
3528 | return r; | |
3529 | } | |
3530 | ||
3531 | return 0; | |
3532 | } | |
3533 | ||
8a5cd31e | 3534 | static void bus_detach_io_events(sd_bus *bus) { |
1e05d493 LP |
3535 | assert(bus); |
3536 | ||
3537 | if (bus->input_io_event_source) { | |
3538 | sd_event_source_set_enabled(bus->input_io_event_source, SD_EVENT_OFF); | |
3539 | bus->input_io_event_source = sd_event_source_unref(bus->input_io_event_source); | |
3540 | } | |
3541 | ||
3542 | if (bus->output_io_event_source) { | |
3543 | sd_event_source_set_enabled(bus->output_io_event_source, SD_EVENT_OFF); | |
3544 | bus->output_io_event_source = sd_event_source_unref(bus->output_io_event_source); | |
3545 | } | |
3546 | } | |
3547 | ||
8a5cd31e LP |
3548 | int bus_attach_inotify_event(sd_bus *bus) { |
3549 | int r; | |
3550 | ||
3551 | assert(bus); | |
3552 | ||
3553 | if (bus->inotify_fd < 0) | |
3554 | return 0; | |
3555 | ||
3556 | if (!bus->event) | |
3557 | return 0; | |
3558 | ||
3559 | if (!bus->inotify_event_source) { | |
3560 | r = sd_event_add_io(bus->event, &bus->inotify_event_source, bus->inotify_fd, EPOLLIN, io_callback, bus); | |
3561 | if (r < 0) | |
3562 | return r; | |
3563 | ||
3564 | r = sd_event_source_set_priority(bus->inotify_event_source, bus->event_priority); | |
3565 | if (r < 0) | |
3566 | return r; | |
3567 | ||
3568 | r = sd_event_source_set_description(bus->inotify_event_source, "bus-inotify"); | |
3569 | } else | |
3570 | r = sd_event_source_set_io_fd(bus->inotify_event_source, bus->inotify_fd); | |
3571 | if (r < 0) | |
3572 | return r; | |
3573 | ||
3574 | return 0; | |
3575 | } | |
3576 | ||
3577 | static void bus_detach_inotify_event(sd_bus *bus) { | |
3578 | assert(bus); | |
3579 | ||
3580 | if (bus->inotify_event_source) { | |
3581 | sd_event_source_set_enabled(bus->inotify_event_source, SD_EVENT_OFF); | |
3582 | bus->inotify_event_source = sd_event_source_unref(bus->inotify_event_source); | |
3583 | } | |
3584 | } | |
3585 | ||
d9f644e2 | 3586 | _public_ int sd_bus_attach_event(sd_bus *bus, sd_event *event, int priority) { |
40ca29a1 LP |
3587 | int r; |
3588 | ||
3589 | assert_return(bus, -EINVAL); | |
45b1f410 | 3590 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
40ca29a1 LP |
3591 | assert_return(!bus->event, -EBUSY); |
3592 | ||
3593 | assert(!bus->input_io_event_source); | |
3594 | assert(!bus->output_io_event_source); | |
3595 | assert(!bus->time_event_source); | |
3596 | ||
76b54375 LP |
3597 | if (event) |
3598 | bus->event = sd_event_ref(event); | |
3599 | else { | |
3600 | r = sd_event_default(&bus->event); | |
3601 | if (r < 0) | |
3602 | return r; | |
3603 | } | |
40ca29a1 | 3604 | |
1e05d493 | 3605 | bus->event_priority = priority; |
40ca29a1 | 3606 | |
6a0f1f6d | 3607 | r = sd_event_add_time(bus->event, &bus->time_event_source, CLOCK_MONOTONIC, 0, 0, time_callback, bus); |
40ca29a1 LP |
3608 | if (r < 0) |
3609 | goto fail; | |
3610 | ||
3611 | r = sd_event_source_set_priority(bus->time_event_source, priority); | |
3612 | if (r < 0) | |
3613 | goto fail; | |
3614 | ||
356779df | 3615 | r = sd_event_source_set_description(bus->time_event_source, "bus-time"); |
9021bb9f TG |
3616 | if (r < 0) |
3617 | goto fail; | |
3618 | ||
151b9b96 | 3619 | r = sd_event_add_exit(bus->event, &bus->quit_event_source, quit_callback, bus); |
abc5fe72 LP |
3620 | if (r < 0) |
3621 | goto fail; | |
3622 | ||
356779df | 3623 | r = sd_event_source_set_description(bus->quit_event_source, "bus-exit"); |
9021bb9f TG |
3624 | if (r < 0) |
3625 | goto fail; | |
3626 | ||
8a5cd31e LP |
3627 | r = bus_attach_io_events(bus); |
3628 | if (r < 0) | |
3629 | goto fail; | |
3630 | ||
3631 | r = bus_attach_inotify_event(bus); | |
1e05d493 LP |
3632 | if (r < 0) |
3633 | goto fail; | |
3634 | ||
40ca29a1 LP |
3635 | return 0; |
3636 | ||
3637 | fail: | |
3638 | sd_bus_detach_event(bus); | |
3639 | return r; | |
3640 | } | |
3641 | ||
d9f644e2 | 3642 | _public_ int sd_bus_detach_event(sd_bus *bus) { |
40ca29a1 | 3643 | assert_return(bus, -EINVAL); |
45b1f410 | 3644 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
a82cafb9 LP |
3645 | |
3646 | if (!bus->event) | |
3647 | return 0; | |
40ca29a1 | 3648 | |
8a5cd31e LP |
3649 | bus_detach_io_events(bus); |
3650 | bus_detach_inotify_event(bus); | |
40ca29a1 | 3651 | |
86befb40 LP |
3652 | if (bus->time_event_source) { |
3653 | sd_event_source_set_enabled(bus->time_event_source, SD_EVENT_OFF); | |
40ca29a1 | 3654 | bus->time_event_source = sd_event_source_unref(bus->time_event_source); |
86befb40 | 3655 | } |
40ca29a1 | 3656 | |
86befb40 LP |
3657 | if (bus->quit_event_source) { |
3658 | sd_event_source_set_enabled(bus->quit_event_source, SD_EVENT_OFF); | |
abc5fe72 | 3659 | bus->quit_event_source = sd_event_source_unref(bus->quit_event_source); |
86befb40 | 3660 | } |
abc5fe72 | 3661 | |
93f1bcf4 | 3662 | bus->event = sd_event_unref(bus->event); |
a82cafb9 | 3663 | return 1; |
40ca29a1 | 3664 | } |
affff0b6 | 3665 | |
2be44176 LP |
3666 | _public_ sd_event* sd_bus_get_event(sd_bus *bus) { |
3667 | assert_return(bus, NULL); | |
3668 | ||
3669 | return bus->event; | |
3670 | } | |
3671 | ||
19befb2d LP |
3672 | _public_ sd_bus_message* sd_bus_get_current_message(sd_bus *bus) { |
3673 | assert_return(bus, NULL); | |
3674 | ||
3675 | return bus->current_message; | |
3676 | } | |
3677 | ||
3678 | _public_ sd_bus_slot* sd_bus_get_current_slot(sd_bus *bus) { | |
affff0b6 LP |
3679 | assert_return(bus, NULL); |
3680 | ||
19befb2d | 3681 | return bus->current_slot; |
affff0b6 | 3682 | } |
76b54375 | 3683 | |
caa82984 LP |
3684 | _public_ sd_bus_message_handler_t sd_bus_get_current_handler(sd_bus *bus) { |
3685 | assert_return(bus, NULL); | |
3686 | ||
3687 | return bus->current_handler; | |
3688 | } | |
3689 | ||
3690 | _public_ void* sd_bus_get_current_userdata(sd_bus *bus) { | |
3691 | assert_return(bus, NULL); | |
3692 | ||
3693 | return bus->current_userdata; | |
3694 | } | |
3695 | ||
76b54375 LP |
3696 | static int bus_default(int (*bus_open)(sd_bus **), sd_bus **default_bus, sd_bus **ret) { |
3697 | sd_bus *b = NULL; | |
3698 | int r; | |
3699 | ||
3700 | assert(bus_open); | |
3701 | assert(default_bus); | |
3702 | ||
3703 | if (!ret) | |
3704 | return !!*default_bus; | |
3705 | ||
3706 | if (*default_bus) { | |
3707 | *ret = sd_bus_ref(*default_bus); | |
3708 | return 0; | |
3709 | } | |
3710 | ||
3711 | r = bus_open(&b); | |
3712 | if (r < 0) | |
3713 | return r; | |
3714 | ||
3715 | b->default_bus_ptr = default_bus; | |
3716 | b->tid = gettid(); | |
3717 | *default_bus = b; | |
3718 | ||
3719 | *ret = b; | |
3720 | return 1; | |
3721 | } | |
3722 | ||
3723 | _public_ int sd_bus_default_system(sd_bus **ret) { | |
76b54375 LP |
3724 | return bus_default(sd_bus_open_system, &default_system_bus, ret); |
3725 | } | |
3726 | ||
fa2f8973 | 3727 | _public_ int sd_bus_default_user(sd_bus **ret) { |
76b54375 LP |
3728 | return bus_default(sd_bus_open_user, &default_user_bus, ret); |
3729 | } | |
3730 | ||
af08d2f9 | 3731 | _public_ int sd_bus_default(sd_bus **ret) { |
45b1f410 NM |
3732 | int (*bus_open)(sd_bus **) = NULL; |
3733 | sd_bus **busp; | |
af08d2f9 | 3734 | |
45b1f410 NM |
3735 | busp = bus_choose_default(&bus_open); |
3736 | return bus_default(bus_open, busp, ret); | |
af08d2f9 LP |
3737 | } |
3738 | ||
76b54375 LP |
3739 | _public_ int sd_bus_get_tid(sd_bus *b, pid_t *tid) { |
3740 | assert_return(b, -EINVAL); | |
3741 | assert_return(tid, -EINVAL); | |
3742 | assert_return(!bus_pid_changed(b), -ECHILD); | |
3743 | ||
3744 | if (b->tid != 0) { | |
3745 | *tid = b->tid; | |
3746 | return 0; | |
3747 | } | |
3748 | ||
3749 | if (b->event) | |
3750 | return sd_event_get_tid(b->event, tid); | |
3751 | ||
3752 | return -ENXIO; | |
3753 | } | |
28383ba1 | 3754 | |
a6278b88 LP |
3755 | _public_ int sd_bus_path_encode(const char *prefix, const char *external_id, char **ret_path) { |
3756 | _cleanup_free_ char *e = NULL; | |
3757 | char *ret; | |
3758 | ||
3759 | assert_return(object_path_is_valid(prefix), -EINVAL); | |
3760 | assert_return(external_id, -EINVAL); | |
3761 | assert_return(ret_path, -EINVAL); | |
3762 | ||
3763 | e = bus_label_escape(external_id); | |
3764 | if (!e) | |
3765 | return -ENOMEM; | |
3766 | ||
657ee2d8 | 3767 | ret = path_join(prefix, e); |
a6278b88 LP |
3768 | if (!ret) |
3769 | return -ENOMEM; | |
3770 | ||
3771 | *ret_path = ret; | |
3772 | return 0; | |
28383ba1 LP |
3773 | } |
3774 | ||
a6278b88 LP |
3775 | _public_ int sd_bus_path_decode(const char *path, const char *prefix, char **external_id) { |
3776 | const char *e; | |
3777 | char *ret; | |
3778 | ||
3779 | assert_return(object_path_is_valid(path), -EINVAL); | |
3780 | assert_return(object_path_is_valid(prefix), -EINVAL); | |
3781 | assert_return(external_id, -EINVAL); | |
3782 | ||
3783 | e = object_path_startswith(path, prefix); | |
3784 | if (!e) { | |
3785 | *external_id = NULL; | |
3786 | return 0; | |
3787 | } | |
3788 | ||
3789 | ret = bus_label_unescape(e); | |
3790 | if (!ret) | |
3791 | return -ENOMEM; | |
3792 | ||
3793 | *external_id = ret; | |
3794 | return 1; | |
28383ba1 | 3795 | } |
5b12334d | 3796 | |
dfb815c3 DH |
3797 | _public_ int sd_bus_path_encode_many(char **out, const char *path_template, ...) { |
3798 | _cleanup_strv_free_ char **labels = NULL; | |
3799 | char *path, *path_pos, **label_pos; | |
3800 | const char *sep, *template_pos; | |
3801 | size_t path_length; | |
3802 | va_list list; | |
3803 | int r; | |
3804 | ||
3805 | assert_return(out, -EINVAL); | |
3806 | assert_return(path_template, -EINVAL); | |
3807 | ||
3808 | path_length = strlen(path_template); | |
3809 | ||
19932084 | 3810 | va_start(list, path_template); |
dfb815c3 DH |
3811 | for (sep = strchr(path_template, '%'); sep; sep = strchr(sep + 1, '%')) { |
3812 | const char *arg; | |
3813 | char *label; | |
3814 | ||
3815 | arg = va_arg(list, const char *); | |
3816 | if (!arg) { | |
3817 | va_end(list); | |
3818 | return -EINVAL; | |
3819 | } | |
3820 | ||
3821 | label = bus_label_escape(arg); | |
3822 | if (!label) { | |
3823 | va_end(list); | |
3824 | return -ENOMEM; | |
3825 | } | |
3826 | ||
3827 | r = strv_consume(&labels, label); | |
3828 | if (r < 0) { | |
3829 | va_end(list); | |
3830 | return r; | |
3831 | } | |
3832 | ||
3833 | /* add label length, but account for the format character */ | |
3834 | path_length += strlen(label) - 1; | |
3835 | } | |
3836 | va_end(list); | |
3837 | ||
3838 | path = malloc(path_length + 1); | |
3839 | if (!path) | |
3840 | return -ENOMEM; | |
3841 | ||
3842 | path_pos = path; | |
3843 | label_pos = labels; | |
3844 | ||
3845 | for (template_pos = path_template; *template_pos; ) { | |
3846 | sep = strchrnul(template_pos, '%'); | |
3847 | path_pos = mempcpy(path_pos, template_pos, sep - template_pos); | |
3848 | if (!*sep) | |
3849 | break; | |
3850 | ||
3851 | path_pos = stpcpy(path_pos, *label_pos++); | |
3852 | template_pos = sep + 1; | |
3853 | } | |
3854 | ||
3855 | *path_pos = 0; | |
3856 | *out = path; | |
3857 | return 0; | |
3858 | } | |
3859 | ||
3860 | _public_ int sd_bus_path_decode_many(const char *path, const char *path_template, ...) { | |
3861 | _cleanup_strv_free_ char **labels = NULL; | |
3862 | const char *template_pos, *path_pos; | |
3863 | char **label_pos; | |
3864 | va_list list; | |
3865 | int r; | |
3866 | ||
3867 | /* | |
3868 | * This decodes an object-path based on a template argument. The | |
3869 | * template consists of a verbatim path, optionally including special | |
3870 | * directives: | |
3871 | * | |
3872 | * - Each occurrence of '%' in the template matches an arbitrary | |
3873 | * substring of a label in the given path. At most one such | |
3874 | * directive is allowed per label. For each such directive, the | |
3875 | * caller must provide an output parameter (char **) via va_arg. If | |
3876 | * NULL is passed, the given label is verified, but not returned. | |
3877 | * For each matched label, the *decoded* label is stored in the | |
3878 | * passed output argument, and the caller is responsible to free | |
3879 | * it. Note that the output arguments are only modified if the | |
5238e957 | 3880 | * actually path matched the template. Otherwise, they're left |
dfb815c3 DH |
3881 | * untouched. |
3882 | * | |
3883 | * This function returns <0 on error, 0 if the path does not match the | |
3884 | * template, 1 if it matched. | |
3885 | */ | |
3886 | ||
3887 | assert_return(path, -EINVAL); | |
3888 | assert_return(path_template, -EINVAL); | |
3889 | ||
3890 | path_pos = path; | |
3891 | ||
3892 | for (template_pos = path_template; *template_pos; ) { | |
3893 | const char *sep; | |
3894 | size_t length; | |
3895 | char *label; | |
3896 | ||
3897 | /* verify everything until the next '%' matches verbatim */ | |
3898 | sep = strchrnul(template_pos, '%'); | |
3899 | length = sep - template_pos; | |
3900 | if (strncmp(path_pos, template_pos, length)) | |
3901 | return 0; | |
3902 | ||
3903 | path_pos += length; | |
3904 | template_pos += length; | |
3905 | ||
3906 | if (!*template_pos) | |
3907 | break; | |
3908 | ||
3909 | /* We found the next '%' character. Everything up until here | |
3910 | * matched. We now skip ahead to the end of this label and make | |
3911 | * sure it matches the tail of the label in the path. Then we | |
3912 | * decode the string in-between and save it for later use. */ | |
3913 | ||
3914 | ++template_pos; /* skip over '%' */ | |
3915 | ||
3916 | sep = strchrnul(template_pos, '/'); | |
3917 | length = sep - template_pos; /* length of suffix to match verbatim */ | |
3918 | ||
3919 | /* verify the suffixes match */ | |
3920 | sep = strchrnul(path_pos, '/'); | |
3921 | if (sep - path_pos < (ssize_t)length || | |
3922 | strncmp(sep - length, template_pos, length)) | |
3923 | return 0; | |
3924 | ||
3925 | template_pos += length; /* skip over matched label */ | |
3926 | length = sep - path_pos - length; /* length of sub-label to decode */ | |
3927 | ||
3928 | /* store unescaped label for later use */ | |
3929 | label = bus_label_unescape_n(path_pos, length); | |
3930 | if (!label) | |
3931 | return -ENOMEM; | |
3932 | ||
3933 | r = strv_consume(&labels, label); | |
3934 | if (r < 0) | |
3935 | return r; | |
3936 | ||
3937 | path_pos = sep; /* skip decoded label and suffix */ | |
3938 | } | |
3939 | ||
3940 | /* end of template must match end of path */ | |
3941 | if (*path_pos) | |
3942 | return 0; | |
3943 | ||
3944 | /* copy the labels over to the caller */ | |
19932084 | 3945 | va_start(list, path_template); |
dfb815c3 DH |
3946 | for (label_pos = labels; label_pos && *label_pos; ++label_pos) { |
3947 | char **arg; | |
3948 | ||
3949 | arg = va_arg(list, char **); | |
3950 | if (arg) | |
3951 | *arg = *label_pos; | |
3952 | else | |
3953 | free(*label_pos); | |
3954 | } | |
3955 | va_end(list); | |
3956 | ||
86ed6d1b | 3957 | labels = mfree(labels); |
dfb815c3 DH |
3958 | return 1; |
3959 | } | |
3960 | ||
ae095f86 | 3961 | _public_ int sd_bus_try_close(sd_bus *bus) { |
ae095f86 | 3962 | assert_return(bus, -EINVAL); |
45b1f410 | 3963 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
ae095f86 | 3964 | assert_return(!bus_pid_changed(bus), -ECHILD); |
a3d59cd1 | 3965 | |
a132bef0 | 3966 | return -EOPNOTSUPP; |
ae095f86 | 3967 | } |
5972fe95 | 3968 | |
455971c1 | 3969 | _public_ int sd_bus_get_description(sd_bus *bus, const char **description) { |
5972fe95 | 3970 | assert_return(bus, -EINVAL); |
45b1f410 | 3971 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
455971c1 | 3972 | assert_return(description, -EINVAL); |
f4b2933e | 3973 | assert_return(bus->description, -ENXIO); |
5972fe95 LP |
3974 | assert_return(!bus_pid_changed(bus), -ECHILD); |
3975 | ||
201e419a LP |
3976 | if (bus->description) |
3977 | *description = bus->description; | |
3978 | else if (bus->is_system) | |
3979 | *description = "system"; | |
3980 | else if (bus->is_user) | |
3981 | *description = "user"; | |
3982 | else | |
3983 | *description = NULL; | |
3984 | ||
5972fe95 LP |
3985 | return 0; |
3986 | } | |
fe3f22d1 | 3987 | |
3acc1daf | 3988 | _public_ int sd_bus_get_scope(sd_bus *bus, const char **scope) { |
3acc1daf | 3989 | assert_return(bus, -EINVAL); |
45b1f410 | 3990 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
3acc1daf LP |
3991 | assert_return(scope, -EINVAL); |
3992 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
3993 | ||
3acc1daf LP |
3994 | if (bus->is_user) { |
3995 | *scope = "user"; | |
5b820358 | 3996 | return 0; |
3acc1daf LP |
3997 | } |
3998 | ||
3999 | if (bus->is_system) { | |
4000 | *scope = "system"; | |
5b820358 LP |
4001 | return 0; |
4002 | } | |
4003 | ||
4004 | return -ENODATA; | |
4005 | } | |
4006 | ||
4007 | _public_ int sd_bus_get_address(sd_bus *bus, const char **address) { | |
4008 | ||
4009 | assert_return(bus, -EINVAL); | |
45b1f410 | 4010 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
5b820358 LP |
4011 | assert_return(address, -EINVAL); |
4012 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
4013 | ||
4014 | if (bus->address) { | |
4015 | *address = bus->address; | |
4016 | return 0; | |
3acc1daf LP |
4017 | } |
4018 | ||
4019 | return -ENODATA; | |
4020 | } | |
224b3787 | 4021 | |
882897af | 4022 | _public_ int sd_bus_get_creds_mask(sd_bus *bus, uint64_t *mask) { |
224b3787 | 4023 | assert_return(bus, -EINVAL); |
45b1f410 | 4024 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
224b3787 LP |
4025 | assert_return(mask, -EINVAL); |
4026 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
4027 | ||
4028 | *mask = bus->creds_mask; | |
4029 | return 0; | |
4030 | } | |
4031 | ||
882897af | 4032 | _public_ int sd_bus_is_bus_client(sd_bus *bus) { |
224b3787 | 4033 | assert_return(bus, -EINVAL); |
45b1f410 | 4034 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
224b3787 LP |
4035 | assert_return(!bus_pid_changed(bus), -ECHILD); |
4036 | ||
4037 | return bus->bus_client; | |
4038 | } | |
4039 | ||
882897af | 4040 | _public_ int sd_bus_is_server(sd_bus *bus) { |
224b3787 | 4041 | assert_return(bus, -EINVAL); |
45b1f410 | 4042 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
224b3787 LP |
4043 | assert_return(!bus_pid_changed(bus), -ECHILD); |
4044 | ||
4045 | return bus->is_server; | |
4046 | } | |
4047 | ||
882897af | 4048 | _public_ int sd_bus_is_anonymous(sd_bus *bus) { |
224b3787 | 4049 | assert_return(bus, -EINVAL); |
45b1f410 | 4050 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
224b3787 LP |
4051 | assert_return(!bus_pid_changed(bus), -ECHILD); |
4052 | ||
4053 | return bus->anonymous_auth; | |
4054 | } | |
4055 | ||
882897af | 4056 | _public_ int sd_bus_is_trusted(sd_bus *bus) { |
224b3787 | 4057 | assert_return(bus, -EINVAL); |
45b1f410 | 4058 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
224b3787 LP |
4059 | assert_return(!bus_pid_changed(bus), -ECHILD); |
4060 | ||
4061 | return bus->trusted; | |
4062 | } | |
4063 | ||
882897af | 4064 | _public_ int sd_bus_is_monitor(sd_bus *bus) { |
224b3787 | 4065 | assert_return(bus, -EINVAL); |
45b1f410 | 4066 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
224b3787 LP |
4067 | assert_return(!bus_pid_changed(bus), -ECHILD); |
4068 | ||
c7db1984 | 4069 | return bus->is_monitor; |
224b3787 | 4070 | } |
fa2f8973 LP |
4071 | |
4072 | static void flush_close(sd_bus *bus) { | |
4073 | if (!bus) | |
4074 | return; | |
4075 | ||
4076 | /* Flushes and closes the specified bus. We take a ref before, | |
4077 | * to ensure the flushing does not cause the bus to be | |
4078 | * unreferenced. */ | |
4079 | ||
4080 | sd_bus_flush_close_unref(sd_bus_ref(bus)); | |
4081 | } | |
4082 | ||
4083 | _public_ void sd_bus_default_flush_close(void) { | |
4084 | flush_close(default_starter_bus); | |
4085 | flush_close(default_user_bus); | |
4086 | flush_close(default_system_bus); | |
4087 | } | |
fbb4603d LP |
4088 | |
4089 | _public_ int sd_bus_set_exit_on_disconnect(sd_bus *bus, int b) { | |
4090 | assert_return(bus, -EINVAL); | |
45b1f410 | 4091 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
fbb4603d LP |
4092 | |
4093 | /* Turns on exit-on-disconnect, and triggers it immediately if the bus connection was already | |
4094 | * disconnected. Note that this is triggered exclusively on disconnections triggered by the server side, never | |
4095 | * from the client side. */ | |
4096 | bus->exit_on_disconnect = b; | |
4097 | ||
4098 | /* If the exit condition was triggered already, exit immediately. */ | |
4099 | return bus_exit_now(bus); | |
4100 | } | |
4101 | ||
4102 | _public_ int sd_bus_get_exit_on_disconnect(sd_bus *bus) { | |
4103 | assert_return(bus, -EINVAL); | |
45b1f410 | 4104 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
fbb4603d LP |
4105 | |
4106 | return bus->exit_on_disconnect; | |
4107 | } | |
48ef41a3 LP |
4108 | |
4109 | _public_ int sd_bus_set_sender(sd_bus *bus, const char *sender) { | |
4110 | assert_return(bus, -EINVAL); | |
45b1f410 | 4111 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
48ef41a3 LP |
4112 | assert_return(!bus->bus_client, -EPERM); |
4113 | assert_return(!sender || service_name_is_valid(sender), -EINVAL); | |
4114 | ||
4115 | return free_and_strdup(&bus->patch_sender, sender); | |
4116 | } | |
4117 | ||
4118 | _public_ int sd_bus_get_sender(sd_bus *bus, const char **ret) { | |
4119 | assert_return(bus, -EINVAL); | |
45b1f410 | 4120 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
48ef41a3 LP |
4121 | assert_return(ret, -EINVAL); |
4122 | ||
4123 | if (!bus->patch_sender) | |
4124 | return -ENODATA; | |
4125 | ||
4126 | *ret = bus->patch_sender; | |
4127 | return 0; | |
4128 | } | |
2770da02 LP |
4129 | |
4130 | _public_ int sd_bus_get_n_queued_read(sd_bus *bus, uint64_t *ret) { | |
4131 | assert_return(bus, -EINVAL); | |
4132 | assert_return(bus = bus_resolve(bus), -ENOPKG); | |
4133 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
4134 | assert_return(ret, -EINVAL); | |
4135 | ||
4136 | *ret = bus->rqueue_size; | |
4137 | return 0; | |
4138 | } | |
4139 | ||
4140 | _public_ int sd_bus_get_n_queued_write(sd_bus *bus, uint64_t *ret) { | |
4141 | assert_return(bus, -EINVAL); | |
4142 | assert_return(bus = bus_resolve(bus), -ENOPKG); | |
4143 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
4144 | assert_return(ret, -EINVAL); | |
4145 | ||
4146 | *ret = bus->wqueue_size; | |
4147 | return 0; | |
4148 | } | |
385b2eb2 YW |
4149 | |
4150 | _public_ int sd_bus_set_method_call_timeout(sd_bus *bus, uint64_t usec) { | |
4151 | assert_return(bus, -EINVAL); | |
4152 | assert_return(bus = bus_resolve(bus), -ENOPKG); | |
4153 | ||
4154 | bus->method_call_timeout = usec; | |
4155 | return 0; | |
4156 | } | |
4157 | ||
4158 | _public_ int sd_bus_get_method_call_timeout(sd_bus *bus, uint64_t *ret) { | |
4159 | const char *e; | |
4160 | usec_t usec; | |
4161 | ||
4162 | assert_return(bus, -EINVAL); | |
4163 | assert_return(bus = bus_resolve(bus), -ENOPKG); | |
4164 | assert_return(ret, -EINVAL); | |
4165 | ||
4166 | if (bus->method_call_timeout != 0) { | |
4167 | *ret = bus->method_call_timeout; | |
4168 | return 0; | |
4169 | } | |
4170 | ||
4171 | e = secure_getenv("SYSTEMD_BUS_TIMEOUT"); | |
4172 | if (e && parse_sec(e, &usec) >= 0 && usec != 0) { | |
4173 | /* Save the parsed value to avoid multiple parsing. To change the timeout value, | |
4174 | * use sd_bus_set_method_call_timeout() instead of setenv(). */ | |
4175 | *ret = bus->method_call_timeout = usec; | |
4176 | return 0; | |
4177 | } | |
4178 | ||
4179 | *ret = bus->method_call_timeout = BUS_DEFAULT_TIMEOUT; | |
4180 | return 0; | |
4181 | } | |
c4e48030 LP |
4182 | |
4183 | _public_ int sd_bus_set_close_on_exit(sd_bus *bus, int b) { | |
4184 | assert_return(bus, -EINVAL); | |
4185 | assert_return(bus = bus_resolve(bus), -ENOPKG); | |
4186 | ||
4187 | bus->close_on_exit = b; | |
4188 | return 0; | |
4189 | } | |
4190 | ||
4191 | _public_ int sd_bus_get_close_on_exit(sd_bus *bus) { | |
4192 | assert_return(bus, -EINVAL); | |
4193 | assert_return(bus = bus_resolve(bus), -ENOPKG); | |
4194 | ||
4195 | return bus->close_on_exit; | |
4196 | } |