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Commit | Line | Data |
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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" | |
3ffd4af2 | 31 | #include "fd-util.h" |
cf0fbc49 | 32 | #include "hexdecoct.h" |
07630cea LP |
33 | #include "hostname-util.h" |
34 | #include "macro.h" | |
35 | #include "missing.h" | |
6bedfcbb | 36 | #include "parse-util.h" |
dccca82b | 37 | #include "process-util.h" |
07630cea LP |
38 | #include "string-util.h" |
39 | #include "strv.h" | |
40 | #include "util.h" | |
de1c301e | 41 | |
b56c4604 LP |
42 | #define log_debug_bus_message(m) \ |
43 | do { \ | |
44 | sd_bus_message *_mm = (m); \ | |
e32fd6b4 | 45 | 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 |
46 | bus_message_type_to_string(_mm->header->type), \ |
47 | strna(sd_bus_message_get_sender(_mm)), \ | |
48 | strna(sd_bus_message_get_destination(_mm)), \ | |
49 | strna(sd_bus_message_get_path(_mm)), \ | |
50 | strna(sd_bus_message_get_interface(_mm)), \ | |
51 | strna(sd_bus_message_get_member(_mm)), \ | |
52 | BUS_MESSAGE_COOKIE(_mm), \ | |
53 | _mm->reply_cookie, \ | |
e32fd6b4 | 54 | strna(_mm->root_container.signature), \ |
e28d0865 | 55 | strna(_mm->error.name), \ |
b56c4604 LP |
56 | strna(_mm->error.message)); \ |
57 | } while (false) | |
f9f97ca6 | 58 | |
e3017af9 | 59 | static int bus_poll(sd_bus *bus, bool need_more, uint64_t timeout_usec); |
8a5cd31e LP |
60 | static void bus_detach_io_events(sd_bus *b); |
61 | static void bus_detach_inotify_event(sd_bus *b); | |
e3017af9 | 62 | |
fa2f8973 LP |
63 | static thread_local sd_bus *default_system_bus = NULL; |
64 | static thread_local sd_bus *default_user_bus = NULL; | |
65 | static thread_local sd_bus *default_starter_bus = NULL; | |
66 | ||
45b1f410 NM |
67 | static sd_bus **bus_choose_default(int (**bus_open)(sd_bus **)) { |
68 | const char *e; | |
69 | ||
70 | /* Let's try our best to reuse another cached connection. If | |
71 | * the starter bus type is set, connect via our normal | |
72 | * connection logic, ignoring $DBUS_STARTER_ADDRESS, so that | |
73 | * we can share the connection with the user/system default | |
74 | * bus. */ | |
75 | ||
76 | e = secure_getenv("DBUS_STARTER_BUS_TYPE"); | |
77 | if (e) { | |
78 | if (streq(e, "system")) { | |
79 | if (bus_open) | |
80 | *bus_open = sd_bus_open_system; | |
81 | return &default_system_bus; | |
82 | } else if (STR_IN_SET(e, "user", "session")) { | |
83 | if (bus_open) | |
84 | *bus_open = sd_bus_open_user; | |
85 | return &default_user_bus; | |
86 | } | |
87 | } | |
88 | ||
89 | /* No type is specified, so we have not other option than to | |
90 | * use the starter address if it is set. */ | |
91 | e = secure_getenv("DBUS_STARTER_ADDRESS"); | |
92 | if (e) { | |
93 | if (bus_open) | |
94 | *bus_open = sd_bus_open; | |
95 | return &default_starter_bus; | |
96 | } | |
97 | ||
98 | /* Finally, if nothing is set use the cached connection for | |
99 | * the right scope */ | |
100 | ||
101 | if (cg_pid_get_owner_uid(0, NULL) >= 0) { | |
102 | if (bus_open) | |
103 | *bus_open = sd_bus_open_user; | |
104 | return &default_user_bus; | |
105 | } else { | |
106 | if (bus_open) | |
107 | *bus_open = sd_bus_open_system; | |
108 | return &default_system_bus; | |
109 | } | |
110 | } | |
111 | ||
112 | sd_bus *bus_resolve(sd_bus *bus) { | |
113 | switch ((uintptr_t) bus) { | |
114 | case (uintptr_t) SD_BUS_DEFAULT: | |
115 | return *(bus_choose_default(NULL)); | |
116 | case (uintptr_t) SD_BUS_DEFAULT_USER: | |
117 | return default_user_bus; | |
118 | case (uintptr_t) SD_BUS_DEFAULT_SYSTEM: | |
119 | return default_system_bus; | |
120 | default: | |
121 | return bus; | |
122 | } | |
123 | } | |
124 | ||
8a5cd31e | 125 | void bus_close_io_fds(sd_bus *b) { |
f54514f3 LP |
126 | assert(b); |
127 | ||
8a5cd31e | 128 | bus_detach_io_events(b); |
1e05d493 | 129 | |
0fd8d506 | 130 | if (b->input_fd != b->output_fd) |
03e334a1 | 131 | safe_close(b->output_fd); |
0fd8d506 | 132 | b->output_fd = b->input_fd = safe_close(b->input_fd); |
f54514f3 LP |
133 | } |
134 | ||
8a5cd31e LP |
135 | void bus_close_inotify_fd(sd_bus *b) { |
136 | assert(b); | |
137 | ||
138 | bus_detach_inotify_event(b); | |
139 | ||
140 | b->inotify_fd = safe_close(b->inotify_fd); | |
141 | b->inotify_watches = mfree(b->inotify_watches); | |
142 | b->n_inotify_watches = 0; | |
143 | } | |
144 | ||
0e586eae | 145 | static void bus_reset_queues(sd_bus *b) { |
0e586eae LP |
146 | assert(b); |
147 | ||
f389bf15 LP |
148 | while (b->rqueue_size > 0) |
149 | sd_bus_message_unref(b->rqueue[--b->rqueue_size]); | |
150 | ||
253f96e5 | 151 | b->rqueue = mfree(b->rqueue); |
f389bf15 | 152 | b->rqueue_allocated = 0; |
0e586eae | 153 | |
f389bf15 LP |
154 | while (b->wqueue_size > 0) |
155 | sd_bus_message_unref(b->wqueue[--b->wqueue_size]); | |
0e586eae | 156 | |
253f96e5 | 157 | b->wqueue = mfree(b->wqueue); |
f389bf15 | 158 | b->wqueue_allocated = 0; |
0e586eae LP |
159 | } |
160 | ||
9df088f1 | 161 | static sd_bus* bus_free(sd_bus *b) { |
19befb2d | 162 | sd_bus_slot *s; |
de1c301e LP |
163 | |
164 | assert(b); | |
8f8f05a9 | 165 | assert(!b->track_queue); |
232f3677 | 166 | assert(!b->tracks); |
8f8f05a9 | 167 | |
19befb2d LP |
168 | b->state = BUS_CLOSED; |
169 | ||
40ca29a1 LP |
170 | sd_bus_detach_event(b); |
171 | ||
19befb2d LP |
172 | while ((s = b->slots)) { |
173 | /* At this point only floating slots can still be | |
174 | * around, because the non-floating ones keep a | |
175 | * reference to the bus, and we thus couldn't be | |
176 | * destructing right now... We forcibly disconnect the | |
177 | * slots here, so that they still can be referenced by | |
178 | * apps, but are dead. */ | |
179 | ||
180 | assert(s->floating); | |
2e7e8e34 | 181 | bus_slot_disconnect(s, true); |
19befb2d LP |
182 | } |
183 | ||
f4d140e9 LP |
184 | if (b->default_bus_ptr) |
185 | *b->default_bus_ptr = NULL; | |
186 | ||
8a5cd31e LP |
187 | bus_close_io_fds(b); |
188 | bus_close_inotify_fd(b); | |
de1c301e | 189 | |
c4e6556c | 190 | free(b->label); |
18ac4643 | 191 | free(b->groups); |
de1c301e | 192 | free(b->rbuffer); |
89ffcd2a | 193 | free(b->unique_name); |
2181a7f5 | 194 | free(b->auth_buffer); |
89ffcd2a | 195 | free(b->address); |
a7893c6b | 196 | free(b->machine); |
751bc6ac | 197 | free(b->cgroup_root); |
455971c1 | 198 | free(b->description); |
48ef41a3 | 199 | free(b->patch_sender); |
89ffcd2a | 200 | |
2fd9ae2e LP |
201 | free(b->exec_path); |
202 | strv_free(b->exec_argv); | |
203 | ||
2c93b4ef LP |
204 | close_many(b->fds, b->n_fds); |
205 | free(b->fds); | |
206 | ||
0e586eae | 207 | bus_reset_queues(b); |
de1c301e | 208 | |
c9fe4af7 | 209 | ordered_hashmap_free_free(b->reply_callbacks); |
e3017af9 | 210 | prioq_free(b->reply_callbacks_prioq); |
de1c301e | 211 | |
75a0da95 | 212 | assert(b->match_callbacks.type == BUS_MATCH_ROOT); |
392d5b37 LP |
213 | bus_match_free(&b->match_callbacks); |
214 | ||
29ddb38f LP |
215 | hashmap_free_free(b->vtable_methods); |
216 | hashmap_free_free(b->vtable_properties); | |
217 | ||
19befb2d | 218 | assert(hashmap_isempty(b->nodes)); |
29ddb38f LP |
219 | hashmap_free(b->nodes); |
220 | ||
a132bef0 | 221 | bus_flush_memfd(b); |
bc7fd8cd | 222 | |
45fbe937 LP |
223 | assert_se(pthread_mutex_destroy(&b->memfd_cache_mutex) == 0); |
224 | ||
9df088f1 | 225 | return mfree(b); |
de1c301e LP |
226 | } |
227 | ||
9df088f1 ZJS |
228 | DEFINE_TRIVIAL_CLEANUP_FUNC(sd_bus*, bus_free); |
229 | ||
d9f644e2 | 230 | _public_ int sd_bus_new(sd_bus **ret) { |
01c4dcaf | 231 | _cleanup_free_ sd_bus *b = NULL; |
de1c301e | 232 | |
d6888822 | 233 | assert_return(ret, -EINVAL); |
021a1e78 | 234 | |
c4e48030 | 235 | b = new(sd_bus, 1); |
01c4dcaf | 236 | if (!b) |
021a1e78 | 237 | return -ENOMEM; |
de1c301e | 238 | |
c4e48030 LP |
239 | *b = (sd_bus) { |
240 | .n_ref = REFCNT_INIT, | |
241 | .input_fd = -1, | |
242 | .output_fd = -1, | |
243 | .inotify_fd = -1, | |
244 | .message_version = 1, | |
245 | .creds_mask = SD_BUS_CREDS_WELL_KNOWN_NAMES|SD_BUS_CREDS_UNIQUE_NAME, | |
246 | .accept_fd = true, | |
247 | .original_pid = getpid_cached(), | |
248 | .n_groups = (size_t) -1, | |
249 | .close_on_exit = true, | |
250 | }; | |
01c4dcaf ZJS |
251 | |
252 | assert_se(pthread_mutex_init(&b->memfd_cache_mutex, NULL) == 0); | |
253 | ||
254 | /* We guarantee that wqueue always has space for at least one entry */ | |
255 | if (!GREEDY_REALLOC(b->wqueue, b->wqueue_allocated, 1)) | |
021a1e78 | 256 | return -ENOMEM; |
de1c301e | 257 | |
01c4dcaf | 258 | *ret = TAKE_PTR(b); |
021a1e78 LP |
259 | return 0; |
260 | } | |
261 | ||
d9f644e2 | 262 | _public_ int sd_bus_set_address(sd_bus *bus, const char *address) { |
d6888822 | 263 | assert_return(bus, -EINVAL); |
45b1f410 | 264 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 LP |
265 | assert_return(bus->state == BUS_UNSET, -EPERM); |
266 | assert_return(address, -EINVAL); | |
267 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
021a1e78 | 268 | |
1ab436e3 | 269 | return free_and_strdup(&bus->address, address); |
021a1e78 LP |
270 | } |
271 | ||
d9f644e2 | 272 | _public_ int sd_bus_set_fd(sd_bus *bus, int input_fd, int output_fd) { |
d6888822 | 273 | assert_return(bus, -EINVAL); |
45b1f410 | 274 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 | 275 | assert_return(bus->state == BUS_UNSET, -EPERM); |
8ac43fee LP |
276 | assert_return(input_fd >= 0, -EBADF); |
277 | assert_return(output_fd >= 0, -EBADF); | |
d6888822 | 278 | assert_return(!bus_pid_changed(bus), -ECHILD); |
021a1e78 | 279 | |
e82c9509 LP |
280 | bus->input_fd = input_fd; |
281 | bus->output_fd = output_fd; | |
021a1e78 LP |
282 | return 0; |
283 | } | |
284 | ||
d9f644e2 | 285 | _public_ int sd_bus_set_exec(sd_bus *bus, const char *path, char *const argv[]) { |
1ab436e3 YW |
286 | _cleanup_strv_free_ char **a = NULL; |
287 | int r; | |
2fd9ae2e | 288 | |
d6888822 | 289 | assert_return(bus, -EINVAL); |
45b1f410 | 290 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 LP |
291 | assert_return(bus->state == BUS_UNSET, -EPERM); |
292 | assert_return(path, -EINVAL); | |
293 | assert_return(!strv_isempty(argv), -EINVAL); | |
294 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
2fd9ae2e | 295 | |
2fd9ae2e | 296 | a = strv_copy(argv); |
01c4dcaf | 297 | if (!a) |
2fd9ae2e | 298 | return -ENOMEM; |
2fd9ae2e | 299 | |
1ab436e3 YW |
300 | r = free_and_strdup(&bus->exec_path, path); |
301 | if (r < 0) | |
302 | return r; | |
303 | ||
304 | return strv_free_and_replace(bus->exec_argv, a); | |
2fd9ae2e LP |
305 | } |
306 | ||
d9f644e2 | 307 | _public_ int sd_bus_set_bus_client(sd_bus *bus, int b) { |
d6888822 | 308 | assert_return(bus, -EINVAL); |
45b1f410 | 309 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 | 310 | assert_return(bus->state == BUS_UNSET, -EPERM); |
48ef41a3 | 311 | assert_return(!bus->patch_sender, -EPERM); |
d6888822 | 312 | assert_return(!bus_pid_changed(bus), -ECHILD); |
021a1e78 | 313 | |
94bbf1ba | 314 | bus->bus_client = !!b; |
021a1e78 LP |
315 | return 0; |
316 | } | |
317 | ||
09365592 LP |
318 | _public_ int sd_bus_set_monitor(sd_bus *bus, int b) { |
319 | assert_return(bus, -EINVAL); | |
45b1f410 | 320 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
09365592 LP |
321 | assert_return(bus->state == BUS_UNSET, -EPERM); |
322 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
323 | ||
e5c8029e | 324 | bus->is_monitor = !!b; |
09365592 LP |
325 | return 0; |
326 | } | |
327 | ||
d9f644e2 | 328 | _public_ int sd_bus_negotiate_fds(sd_bus *bus, int b) { |
d6888822 | 329 | assert_return(bus, -EINVAL); |
45b1f410 | 330 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 LP |
331 | assert_return(bus->state == BUS_UNSET, -EPERM); |
332 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
021a1e78 | 333 | |
e5c8029e | 334 | bus->accept_fd = !!b; |
264ad849 LP |
335 | return 0; |
336 | } | |
337 | ||
4fc31988 | 338 | _public_ int sd_bus_negotiate_timestamp(sd_bus *bus, int b) { |
16be4368 | 339 | assert_return(bus, -EINVAL); |
45b1f410 | 340 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
b5dae4c7 | 341 | assert_return(!IN_SET(bus->state, BUS_CLOSING, BUS_CLOSED), -EPERM); |
16be4368 KS |
342 | assert_return(!bus_pid_changed(bus), -ECHILD); |
343 | ||
c7db1984 LP |
344 | /* This is not actually supported by any of our transports these days, but we do honour it for synthetic |
345 | * replies, and maybe one day classic D-Bus learns this too */ | |
e5c8029e | 346 | bus->attach_timestamp = !!b; |
b5dae4c7 | 347 | |
16be4368 KS |
348 | return 0; |
349 | } | |
350 | ||
b5dae4c7 | 351 | _public_ int sd_bus_negotiate_creds(sd_bus *bus, int b, uint64_t mask) { |
16be4368 | 352 | assert_return(bus, -EINVAL); |
45b1f410 | 353 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
95c4fe82 | 354 | assert_return(mask <= _SD_BUS_CREDS_ALL, -EINVAL); |
b5dae4c7 | 355 | assert_return(!IN_SET(bus->state, BUS_CLOSING, BUS_CLOSED), -EPERM); |
16be4368 KS |
356 | assert_return(!bus_pid_changed(bus), -ECHILD); |
357 | ||
5883ff60 | 358 | SET_FLAG(bus->creds_mask, mask, b); |
b5dae4c7 | 359 | |
49b832c5 | 360 | /* The well knowns we need unconditionally, so that matches can work */ |
b5dae4c7 LP |
361 | bus->creds_mask |= SD_BUS_CREDS_WELL_KNOWN_NAMES|SD_BUS_CREDS_UNIQUE_NAME; |
362 | ||
b5dae4c7 | 363 | return 0; |
021a1e78 | 364 | } |
de1c301e | 365 | |
d9f644e2 | 366 | _public_ int sd_bus_set_server(sd_bus *bus, int b, sd_id128_t server_id) { |
d6888822 | 367 | assert_return(bus, -EINVAL); |
45b1f410 | 368 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 LP |
369 | assert_return(b || sd_id128_equal(server_id, SD_ID128_NULL), -EINVAL); |
370 | assert_return(bus->state == BUS_UNSET, -EPERM); | |
371 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
2181a7f5 LP |
372 | |
373 | bus->is_server = !!b; | |
98178d39 | 374 | bus->server_id = server_id; |
2181a7f5 LP |
375 | return 0; |
376 | } | |
377 | ||
d9f644e2 | 378 | _public_ int sd_bus_set_anonymous(sd_bus *bus, int b) { |
d6888822 | 379 | assert_return(bus, -EINVAL); |
45b1f410 | 380 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 LP |
381 | assert_return(bus->state == BUS_UNSET, -EPERM); |
382 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
2181a7f5 LP |
383 | |
384 | bus->anonymous_auth = !!b; | |
385 | return 0; | |
386 | } | |
387 | ||
adacb957 LP |
388 | _public_ int sd_bus_set_trusted(sd_bus *bus, int b) { |
389 | assert_return(bus, -EINVAL); | |
45b1f410 | 390 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
adacb957 LP |
391 | assert_return(bus->state == BUS_UNSET, -EPERM); |
392 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
393 | ||
394 | bus->trusted = !!b; | |
395 | return 0; | |
396 | } | |
397 | ||
455971c1 | 398 | _public_ int sd_bus_set_description(sd_bus *bus, const char *description) { |
5972fe95 | 399 | assert_return(bus, -EINVAL); |
45b1f410 | 400 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
5972fe95 LP |
401 | assert_return(bus->state == BUS_UNSET, -EPERM); |
402 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
403 | ||
d1b91c99 | 404 | return free_and_strdup(&bus->description, description); |
5972fe95 LP |
405 | } |
406 | ||
c0765ddb LP |
407 | _public_ int sd_bus_set_allow_interactive_authorization(sd_bus *bus, int b) { |
408 | assert_return(bus, -EINVAL); | |
45b1f410 | 409 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
c0765ddb LP |
410 | assert_return(!bus_pid_changed(bus), -ECHILD); |
411 | ||
412 | bus->allow_interactive_authorization = !!b; | |
413 | return 0; | |
414 | } | |
415 | ||
416 | _public_ int sd_bus_get_allow_interactive_authorization(sd_bus *bus) { | |
417 | assert_return(bus, -EINVAL); | |
45b1f410 | 418 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
c0765ddb LP |
419 | assert_return(!bus_pid_changed(bus), -ECHILD); |
420 | ||
421 | return bus->allow_interactive_authorization; | |
422 | } | |
423 | ||
8a5cd31e LP |
424 | _public_ int sd_bus_set_watch_bind(sd_bus *bus, int b) { |
425 | assert_return(bus, -EINVAL); | |
45b1f410 | 426 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
8a5cd31e LP |
427 | assert_return(bus->state == BUS_UNSET, -EPERM); |
428 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
429 | ||
e5c8029e | 430 | bus->watch_bind = !!b; |
8a5cd31e LP |
431 | return 0; |
432 | } | |
433 | ||
434 | _public_ int sd_bus_get_watch_bind(sd_bus *bus) { | |
435 | assert_return(bus, -EINVAL); | |
45b1f410 | 436 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
8a5cd31e LP |
437 | assert_return(!bus_pid_changed(bus), -ECHILD); |
438 | ||
439 | return bus->watch_bind; | |
440 | } | |
441 | ||
b38cc8d5 LP |
442 | _public_ int sd_bus_set_connected_signal(sd_bus *bus, int b) { |
443 | assert_return(bus, -EINVAL); | |
45b1f410 | 444 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
b38cc8d5 LP |
445 | assert_return(bus->state == BUS_UNSET, -EPERM); |
446 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
447 | ||
e5c8029e | 448 | bus->connected_signal = !!b; |
b38cc8d5 LP |
449 | return 0; |
450 | } | |
451 | ||
452 | _public_ int sd_bus_get_connected_signal(sd_bus *bus) { | |
453 | assert_return(bus, -EINVAL); | |
45b1f410 | 454 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
b38cc8d5 LP |
455 | assert_return(!bus_pid_changed(bus), -ECHILD); |
456 | ||
457 | return bus->connected_signal; | |
458 | } | |
459 | ||
460 | static int synthesize_connected_signal(sd_bus *bus) { | |
461 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; | |
462 | int r; | |
463 | ||
464 | assert(bus); | |
465 | ||
466 | /* If enabled, synthesizes a local "Connected" signal mirroring the local "Disconnected" signal. This is called | |
467 | * whenever we fully established a connection, i.e. after the authorization phase, and after receiving the | |
468 | * Hello() reply. Or in other words, whenver we enter BUS_RUNNING state. | |
469 | * | |
470 | * This is useful so that clients can start doing stuff whenver the connection is fully established in a way | |
471 | * that works independently from whether we connected to a full bus or just a direct connection. */ | |
472 | ||
473 | if (!bus->connected_signal) | |
474 | return 0; | |
475 | ||
476 | r = sd_bus_message_new_signal( | |
477 | bus, | |
478 | &m, | |
479 | "/org/freedesktop/DBus/Local", | |
480 | "org.freedesktop.DBus.Local", | |
481 | "Connected"); | |
482 | if (r < 0) | |
483 | return r; | |
484 | ||
485 | bus_message_set_sender_local(bus, m); | |
486 | ||
487 | r = bus_seal_synthetic_message(bus, m); | |
488 | if (r < 0) | |
489 | return r; | |
490 | ||
491 | r = bus_rqueue_make_room(bus); | |
492 | if (r < 0) | |
493 | return r; | |
494 | ||
495 | /* Insert at the very front */ | |
496 | memmove(bus->rqueue + 1, bus->rqueue, sizeof(sd_bus_message*) * bus->rqueue_size); | |
1cc6c93a | 497 | bus->rqueue[0] = TAKE_PTR(m); |
b38cc8d5 LP |
498 | bus->rqueue_size++; |
499 | ||
500 | return 0; | |
501 | } | |
502 | ||
3e0e196e LP |
503 | void bus_set_state(sd_bus *bus, enum bus_state state) { |
504 | ||
505 | static const char * const table[_BUS_STATE_MAX] = { | |
506 | [BUS_UNSET] = "UNSET", | |
507 | [BUS_WATCH_BIND] = "WATCH_BIND", | |
508 | [BUS_OPENING] = "OPENING", | |
509 | [BUS_AUTHENTICATING] = "AUTHENTICATING", | |
510 | [BUS_HELLO] = "HELLO", | |
511 | [BUS_RUNNING] = "RUNNING", | |
512 | [BUS_CLOSING] = "CLOSING", | |
513 | [BUS_CLOSED] = "CLOSED", | |
514 | }; | |
515 | ||
516 | assert(bus); | |
517 | assert(state < _BUS_STATE_MAX); | |
518 | ||
519 | if (state == bus->state) | |
520 | return; | |
521 | ||
522 | log_debug("Bus %s: changing state %s → %s", strna(bus->description), table[bus->state], table[state]); | |
523 | bus->state = state; | |
524 | } | |
525 | ||
19070062 | 526 | static int hello_callback(sd_bus_message *reply, void *userdata, sd_bus_error *error) { |
de1c301e | 527 | const char *s; |
19070062 | 528 | sd_bus *bus; |
de1c301e LP |
529 | int r; |
530 | ||
19070062 LP |
531 | assert(reply); |
532 | bus = reply->bus; | |
de1c301e | 533 | assert(bus); |
945c2931 | 534 | assert(IN_SET(bus->state, BUS_HELLO, BUS_CLOSING)); |
de1c301e | 535 | |
40ca29a1 | 536 | r = sd_bus_message_get_errno(reply); |
40ca29a1 LP |
537 | if (r > 0) |
538 | return -r; | |
eb01ba5d | 539 | |
de1c301e LP |
540 | r = sd_bus_message_read(reply, "s", &s); |
541 | if (r < 0) | |
542 | return r; | |
543 | ||
dafb7591 LP |
544 | if (!service_name_is_valid(s) || s[0] != ':') |
545 | return -EBADMSG; | |
546 | ||
1ab436e3 YW |
547 | r = free_and_strdup(&bus->unique_name, s); |
548 | if (r < 0) | |
549 | return r; | |
b4ca3f45 | 550 | |
b38cc8d5 | 551 | if (bus->state == BUS_HELLO) { |
3e0e196e | 552 | bus_set_state(bus, BUS_RUNNING); |
dafb7591 | 553 | |
b38cc8d5 LP |
554 | r = synthesize_connected_signal(bus); |
555 | if (r < 0) | |
556 | return r; | |
557 | } | |
558 | ||
de1c301e LP |
559 | return 1; |
560 | } | |
561 | ||
562 | static int bus_send_hello(sd_bus *bus) { | |
4afd3348 | 563 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; |
de1c301e LP |
564 | int r; |
565 | ||
566 | assert(bus); | |
567 | ||
a132bef0 | 568 | if (!bus->bus_client) |
021a1e78 LP |
569 | return 0; |
570 | ||
de1c301e LP |
571 | r = sd_bus_message_new_method_call( |
572 | bus, | |
151b9b96 | 573 | &m, |
de1c301e | 574 | "org.freedesktop.DBus", |
a7639e37 | 575 | "/org/freedesktop/DBus", |
de1c301e | 576 | "org.freedesktop.DBus", |
151b9b96 | 577 | "Hello"); |
de1c301e LP |
578 | if (r < 0) |
579 | return r; | |
580 | ||
19befb2d | 581 | return sd_bus_call_async(bus, NULL, m, hello_callback, NULL, 0); |
de1c301e LP |
582 | } |
583 | ||
a7e3212d | 584 | int bus_start_running(sd_bus *bus) { |
ac8029fc LP |
585 | struct reply_callback *c; |
586 | Iterator i; | |
587 | usec_t n; | |
b38cc8d5 | 588 | int r; |
ac8029fc | 589 | |
de1c301e | 590 | assert(bus); |
ac8029fc LP |
591 | assert(bus->state < BUS_HELLO); |
592 | ||
593 | /* We start all method call timeouts when we enter BUS_HELLO or BUS_RUNNING mode. At this point let's convert | |
594 | * all relative to absolute timestamps. Note that we do not reshuffle the reply callback priority queue since | |
595 | * adding a fixed value to all entries should not alter the internal order. */ | |
596 | ||
597 | n = now(CLOCK_MONOTONIC); | |
598 | ORDERED_HASHMAP_FOREACH(c, bus->reply_callbacks, i) { | |
599 | if (c->timeout_usec == 0) | |
600 | continue; | |
601 | ||
602 | c->timeout_usec = usec_add(n, c->timeout_usec); | |
603 | } | |
de1c301e | 604 | |
a132bef0 | 605 | if (bus->bus_client) { |
3e0e196e | 606 | bus_set_state(bus, BUS_HELLO); |
e3017af9 | 607 | return 1; |
de1c301e LP |
608 | } |
609 | ||
3e0e196e | 610 | bus_set_state(bus, BUS_RUNNING); |
b38cc8d5 LP |
611 | |
612 | r = synthesize_connected_signal(bus); | |
613 | if (r < 0) | |
614 | return r; | |
615 | ||
e3017af9 | 616 | return 1; |
de1c301e LP |
617 | } |
618 | ||
619 | static int parse_address_key(const char **p, const char *key, char **value) { | |
821e0756 | 620 | size_t l, n = 0, allocated = 0; |
cad4fb19 | 621 | _cleanup_free_ char *r = NULL; |
de1c301e | 622 | const char *a; |
de1c301e LP |
623 | |
624 | assert(p); | |
625 | assert(*p); | |
de1c301e LP |
626 | assert(value); |
627 | ||
2fd9ae2e LP |
628 | if (key) { |
629 | l = strlen(key); | |
630 | if (strncmp(*p, key, l) != 0) | |
631 | return 0; | |
de1c301e | 632 | |
2fd9ae2e LP |
633 | if ((*p)[l] != '=') |
634 | return 0; | |
de1c301e | 635 | |
2fd9ae2e LP |
636 | if (*value) |
637 | return -EINVAL; | |
de1c301e | 638 | |
2fd9ae2e LP |
639 | a = *p + l + 1; |
640 | } else | |
641 | a = *p; | |
642 | ||
945c2931 | 643 | while (!IN_SET(*a, ';', ',', 0)) { |
821e0756 | 644 | char c; |
de1c301e LP |
645 | |
646 | if (*a == '%') { | |
647 | int x, y; | |
648 | ||
649 | x = unhexchar(a[1]); | |
cad4fb19 | 650 | if (x < 0) |
de1c301e | 651 | return x; |
de1c301e LP |
652 | |
653 | y = unhexchar(a[2]); | |
cad4fb19 | 654 | if (y < 0) |
de1c301e | 655 | return y; |
de1c301e | 656 | |
de1c301e | 657 | c = (char) ((x << 4) | y); |
89ffcd2a LP |
658 | a += 3; |
659 | } else { | |
de1c301e | 660 | c = *a; |
89ffcd2a LP |
661 | a++; |
662 | } | |
de1c301e | 663 | |
821e0756 | 664 | if (!GREEDY_REALLOC(r, allocated, n + 2)) |
de1c301e | 665 | return -ENOMEM; |
de1c301e | 666 | |
de1c301e LP |
667 | r[n++] = c; |
668 | } | |
669 | ||
89ffcd2a LP |
670 | if (!r) { |
671 | r = strdup(""); | |
672 | if (!r) | |
673 | return -ENOMEM; | |
674 | } else | |
675 | r[n] = 0; | |
676 | ||
677 | if (*a == ',') | |
678 | a++; | |
679 | ||
de1c301e | 680 | *p = a; |
2fd9ae2e | 681 | |
cad4fb19 | 682 | free_and_replace(*value, r); |
2fd9ae2e | 683 | |
de1c301e LP |
684 | return 1; |
685 | } | |
686 | ||
687 | static void skip_address_key(const char **p) { | |
688 | assert(p); | |
689 | assert(*p); | |
690 | ||
89ffcd2a LP |
691 | *p += strcspn(*p, ","); |
692 | ||
693 | if (**p == ',') | |
313cefa1 | 694 | (*p)++; |
de1c301e LP |
695 | } |
696 | ||
2fd9ae2e LP |
697 | static int parse_unix_address(sd_bus *b, const char **p, char **guid) { |
698 | _cleanup_free_ char *path = NULL, *abstract = NULL; | |
699 | size_t l; | |
de1c301e LP |
700 | int r; |
701 | ||
702 | assert(b); | |
2fd9ae2e LP |
703 | assert(p); |
704 | assert(*p); | |
705 | assert(guid); | |
de1c301e | 706 | |
945c2931 | 707 | while (!IN_SET(**p, 0, ';')) { |
2fd9ae2e LP |
708 | r = parse_address_key(p, "guid", guid); |
709 | if (r < 0) | |
710 | return r; | |
711 | else if (r > 0) | |
712 | continue; | |
de1c301e | 713 | |
2fd9ae2e LP |
714 | r = parse_address_key(p, "path", &path); |
715 | if (r < 0) | |
716 | return r; | |
717 | else if (r > 0) | |
718 | continue; | |
de1c301e | 719 | |
2fd9ae2e LP |
720 | r = parse_address_key(p, "abstract", &abstract); |
721 | if (r < 0) | |
722 | return r; | |
723 | else if (r > 0) | |
724 | continue; | |
de1c301e | 725 | |
2fd9ae2e LP |
726 | skip_address_key(p); |
727 | } | |
de1c301e | 728 | |
2fd9ae2e LP |
729 | if (!path && !abstract) |
730 | return -EINVAL; | |
de1c301e | 731 | |
2fd9ae2e LP |
732 | if (path && abstract) |
733 | return -EINVAL; | |
734 | ||
735 | if (path) { | |
736 | l = strlen(path); | |
1d261418 | 737 | if (l >= sizeof(b->sockaddr.un.sun_path)) /* We insist on NUL termination */ |
2fd9ae2e | 738 | return -E2BIG; |
de1c301e | 739 | |
95cb14b0 LP |
740 | b->sockaddr.un = (struct sockaddr_un) { |
741 | .sun_family = AF_UNIX, | |
742 | }; | |
743 | ||
744 | memcpy(b->sockaddr.un.sun_path, path, l); | |
745 | b->sockaddr_size = offsetof(struct sockaddr_un, sun_path) + l + 1; | |
746 | ||
747 | } else { | |
748 | assert(abstract); | |
749 | ||
2fd9ae2e | 750 | l = strlen(abstract); |
1d261418 | 751 | if (l >= sizeof(b->sockaddr.un.sun_path) - 1) /* We insist on NUL termination */ |
2fd9ae2e LP |
752 | return -E2BIG; |
753 | ||
95cb14b0 LP |
754 | b->sockaddr.un = (struct sockaddr_un) { |
755 | .sun_family = AF_UNIX, | |
756 | }; | |
757 | ||
758 | memcpy(b->sockaddr.un.sun_path+1, abstract, l); | |
2fd9ae2e LP |
759 | b->sockaddr_size = offsetof(struct sockaddr_un, sun_path) + 1 + l; |
760 | } | |
761 | ||
694859b5 LP |
762 | b->is_local = true; |
763 | ||
2fd9ae2e LP |
764 | return 0; |
765 | } | |
766 | ||
767 | static int parse_tcp_address(sd_bus *b, const char **p, char **guid) { | |
768 | _cleanup_free_ char *host = NULL, *port = NULL, *family = NULL; | |
2fd9ae2e | 769 | int r; |
b92bea5d ZJS |
770 | struct addrinfo *result, hints = { |
771 | .ai_socktype = SOCK_STREAM, | |
772 | .ai_flags = AI_ADDRCONFIG, | |
773 | }; | |
2fd9ae2e LP |
774 | |
775 | assert(b); | |
776 | assert(p); | |
777 | assert(*p); | |
778 | assert(guid); | |
779 | ||
945c2931 | 780 | while (!IN_SET(**p, 0, ';')) { |
2fd9ae2e LP |
781 | r = parse_address_key(p, "guid", guid); |
782 | if (r < 0) | |
783 | return r; | |
784 | else if (r > 0) | |
785 | continue; | |
786 | ||
787 | r = parse_address_key(p, "host", &host); | |
788 | if (r < 0) | |
789 | return r; | |
790 | else if (r > 0) | |
791 | continue; | |
792 | ||
793 | r = parse_address_key(p, "port", &port); | |
794 | if (r < 0) | |
795 | return r; | |
796 | else if (r > 0) | |
797 | continue; | |
798 | ||
799 | r = parse_address_key(p, "family", &family); | |
800 | if (r < 0) | |
801 | return r; | |
802 | else if (r > 0) | |
803 | continue; | |
804 | ||
805 | skip_address_key(p); | |
806 | } | |
807 | ||
808 | if (!host || !port) | |
809 | return -EINVAL; | |
810 | ||
2fd9ae2e LP |
811 | if (family) { |
812 | if (streq(family, "ipv4")) | |
813 | hints.ai_family = AF_INET; | |
814 | else if (streq(family, "ipv6")) | |
815 | hints.ai_family = AF_INET6; | |
816 | else | |
817 | return -EINVAL; | |
818 | } | |
819 | ||
820 | r = getaddrinfo(host, port, &hints, &result); | |
821 | if (r == EAI_SYSTEM) | |
822 | return -errno; | |
823 | else if (r != 0) | |
824 | return -EADDRNOTAVAIL; | |
825 | ||
826 | memcpy(&b->sockaddr, result->ai_addr, result->ai_addrlen); | |
827 | b->sockaddr_size = result->ai_addrlen; | |
828 | ||
829 | freeaddrinfo(result); | |
830 | ||
694859b5 LP |
831 | b->is_local = false; |
832 | ||
2fd9ae2e LP |
833 | return 0; |
834 | } | |
835 | ||
836 | static int parse_exec_address(sd_bus *b, const char **p, char **guid) { | |
837 | char *path = NULL; | |
838 | unsigned n_argv = 0, j; | |
839 | char **argv = NULL; | |
821e0756 | 840 | size_t allocated = 0; |
2fd9ae2e LP |
841 | int r; |
842 | ||
843 | assert(b); | |
844 | assert(p); | |
845 | assert(*p); | |
846 | assert(guid); | |
847 | ||
945c2931 | 848 | while (!IN_SET(**p, 0, ';')) { |
2fd9ae2e LP |
849 | r = parse_address_key(p, "guid", guid); |
850 | if (r < 0) | |
851 | goto fail; | |
852 | else if (r > 0) | |
853 | continue; | |
854 | ||
855 | r = parse_address_key(p, "path", &path); | |
856 | if (r < 0) | |
857 | goto fail; | |
858 | else if (r > 0) | |
859 | continue; | |
860 | ||
861 | if (startswith(*p, "argv")) { | |
862 | unsigned ul; | |
863 | ||
864 | errno = 0; | |
865 | ul = strtoul(*p + 4, (char**) p, 10); | |
8333c77e | 866 | if (errno > 0 || **p != '=' || ul > 256) { |
2fd9ae2e LP |
867 | r = -EINVAL; |
868 | goto fail; | |
869 | } | |
870 | ||
313cefa1 | 871 | (*p)++; |
2fd9ae2e LP |
872 | |
873 | if (ul >= n_argv) { | |
821e0756 | 874 | if (!GREEDY_REALLOC0(argv, allocated, ul + 2)) { |
2fd9ae2e LP |
875 | r = -ENOMEM; |
876 | goto fail; | |
877 | } | |
878 | ||
2fd9ae2e LP |
879 | n_argv = ul + 1; |
880 | } | |
881 | ||
882 | r = parse_address_key(p, NULL, argv + ul); | |
de1c301e | 883 | if (r < 0) |
2fd9ae2e | 884 | goto fail; |
de1c301e | 885 | |
2fd9ae2e | 886 | continue; |
de1c301e LP |
887 | } |
888 | ||
2fd9ae2e LP |
889 | skip_address_key(p); |
890 | } | |
de1c301e | 891 | |
5a0f6033 LP |
892 | if (!path) { |
893 | r = -EINVAL; | |
2fd9ae2e | 894 | goto fail; |
5a0f6033 | 895 | } |
de1c301e | 896 | |
2fd9ae2e LP |
897 | /* Make sure there are no holes in the array, with the |
898 | * exception of argv[0] */ | |
899 | for (j = 1; j < n_argv; j++) | |
900 | if (!argv[j]) { | |
901 | r = -EINVAL; | |
902 | goto fail; | |
903 | } | |
904 | ||
905 | if (argv && argv[0] == NULL) { | |
906 | argv[0] = strdup(path); | |
907 | if (!argv[0]) { | |
908 | r = -ENOMEM; | |
909 | goto fail; | |
910 | } | |
911 | } | |
de1c301e | 912 | |
2fd9ae2e LP |
913 | b->exec_path = path; |
914 | b->exec_argv = argv; | |
694859b5 LP |
915 | |
916 | b->is_local = false; | |
917 | ||
2fd9ae2e | 918 | return 0; |
de1c301e | 919 | |
2fd9ae2e LP |
920 | fail: |
921 | for (j = 0; j < n_argv; j++) | |
922 | free(argv[j]); | |
923 | ||
924 | free(argv); | |
925 | free(path); | |
926 | return r; | |
927 | } | |
928 | ||
bc9fd78c | 929 | static int parse_container_unix_address(sd_bus *b, const char **p, char **guid) { |
ee502e0c | 930 | _cleanup_free_ char *machine = NULL, *pid = NULL; |
a7893c6b LP |
931 | int r; |
932 | ||
933 | assert(b); | |
934 | assert(p); | |
935 | assert(*p); | |
936 | assert(guid); | |
937 | ||
945c2931 | 938 | while (!IN_SET(**p, 0, ';')) { |
a7893c6b LP |
939 | r = parse_address_key(p, "guid", guid); |
940 | if (r < 0) | |
941 | return r; | |
942 | else if (r > 0) | |
943 | continue; | |
944 | ||
945 | r = parse_address_key(p, "machine", &machine); | |
946 | if (r < 0) | |
947 | return r; | |
948 | else if (r > 0) | |
949 | continue; | |
950 | ||
ee502e0c LP |
951 | r = parse_address_key(p, "pid", &pid); |
952 | if (r < 0) | |
953 | return r; | |
954 | else if (r > 0) | |
955 | continue; | |
956 | ||
a7893c6b LP |
957 | skip_address_key(p); |
958 | } | |
959 | ||
ee502e0c | 960 | if (!machine == !pid) |
a7893c6b LP |
961 | return -EINVAL; |
962 | ||
ee502e0c | 963 | if (machine) { |
1e5057b9 | 964 | if (!streq(machine, ".host") && !machine_name_is_valid(machine)) |
ee502e0c | 965 | return -EINVAL; |
b6741478 | 966 | |
f9ecfd3b | 967 | free_and_replace(b->machine, machine); |
ee502e0c | 968 | } else { |
a1e58e8e | 969 | b->machine = mfree(b->machine); |
ee502e0c LP |
970 | } |
971 | ||
972 | if (pid) { | |
973 | r = parse_pid(pid, &b->nspid); | |
974 | if (r < 0) | |
975 | return r; | |
976 | } else | |
977 | b->nspid = 0; | |
a7893c6b | 978 | |
44ed5214 LP |
979 | b->sockaddr.un = (struct sockaddr_un) { |
980 | .sun_family = AF_UNIX, | |
981 | /* Note that we use the old /var/run prefix here, to increase compatibility with really old containers */ | |
982 | .sun_path = "/var/run/dbus/system_bus_socket", | |
983 | }; | |
fc2fffe7 | 984 | b->sockaddr_size = SOCKADDR_UN_LEN(b->sockaddr.un); |
694859b5 | 985 | b->is_local = false; |
a7893c6b LP |
986 | |
987 | return 0; | |
988 | } | |
989 | ||
2fd9ae2e LP |
990 | static void bus_reset_parsed_address(sd_bus *b) { |
991 | assert(b); | |
992 | ||
993 | zero(b->sockaddr); | |
994 | b->sockaddr_size = 0; | |
ba243e51 NK |
995 | b->exec_argv = strv_free(b->exec_argv); |
996 | b->exec_path = mfree(b->exec_path); | |
98178d39 | 997 | b->server_id = SD_ID128_NULL; |
ba243e51 | 998 | b->machine = mfree(b->machine); |
ee502e0c | 999 | b->nspid = 0; |
2fd9ae2e LP |
1000 | } |
1001 | ||
1002 | static int bus_parse_next_address(sd_bus *b) { | |
1003 | _cleanup_free_ char *guid = NULL; | |
1004 | const char *a; | |
1005 | int r; | |
1006 | ||
1007 | assert(b); | |
1008 | ||
1009 | if (!b->address) | |
1010 | return 0; | |
1011 | if (b->address[b->address_index] == 0) | |
1012 | return 0; | |
1013 | ||
1014 | bus_reset_parsed_address(b); | |
1015 | ||
1016 | a = b->address + b->address_index; | |
de1c301e | 1017 | |
2fd9ae2e | 1018 | while (*a != 0) { |
de1c301e | 1019 | |
2fd9ae2e LP |
1020 | if (*a == ';') { |
1021 | a++; | |
1022 | continue; | |
de1c301e LP |
1023 | } |
1024 | ||
2fd9ae2e LP |
1025 | if (startswith(a, "unix:")) { |
1026 | a += 5; | |
de1c301e | 1027 | |
2fd9ae2e | 1028 | r = parse_unix_address(b, &a, &guid); |
de1c301e LP |
1029 | if (r < 0) |
1030 | return r; | |
2fd9ae2e | 1031 | break; |
de1c301e | 1032 | |
2fd9ae2e | 1033 | } else if (startswith(a, "tcp:")) { |
de1c301e | 1034 | |
2fd9ae2e LP |
1035 | a += 4; |
1036 | r = parse_tcp_address(b, &a, &guid); | |
de1c301e LP |
1037 | if (r < 0) |
1038 | return r; | |
de1c301e | 1039 | |
2fd9ae2e LP |
1040 | break; |
1041 | ||
1042 | } else if (startswith(a, "unixexec:")) { | |
1043 | ||
1044 | a += 9; | |
1045 | r = parse_exec_address(b, &a, &guid); | |
de1c301e LP |
1046 | if (r < 0) |
1047 | return r; | |
de1c301e | 1048 | |
2fd9ae2e | 1049 | break; |
de1c301e | 1050 | |
de33fc62 | 1051 | } else if (startswith(a, "x-machine-unix:")) { |
bc9fd78c | 1052 | |
146d4773 | 1053 | a += 15; |
bc9fd78c LP |
1054 | r = parse_container_unix_address(b, &a, &guid); |
1055 | if (r < 0) | |
1056 | return r; | |
1057 | ||
6629161f | 1058 | break; |
de1c301e LP |
1059 | } |
1060 | ||
2fd9ae2e LP |
1061 | a = strchr(a, ';'); |
1062 | if (!a) | |
1063 | return 0; | |
de1c301e LP |
1064 | } |
1065 | ||
1066 | if (guid) { | |
98178d39 | 1067 | r = sd_id128_from_string(guid, &b->server_id); |
de1c301e LP |
1068 | if (r < 0) |
1069 | return r; | |
1070 | } | |
1071 | ||
2fd9ae2e | 1072 | b->address_index = a - b->address; |
de1c301e LP |
1073 | return 1; |
1074 | } | |
1075 | ||
392cf1d0 SL |
1076 | static void bus_kill_exec(sd_bus *bus) { |
1077 | if (pid_is_valid(bus->busexec_pid) > 0) { | |
1078 | sigterm_wait(bus->busexec_pid); | |
1079 | bus->busexec_pid = 0; | |
1080 | } | |
1081 | } | |
1082 | ||
a7e3212d | 1083 | static int bus_start_address(sd_bus *b) { |
2fd9ae2e LP |
1084 | int r; |
1085 | ||
1086 | assert(b); | |
1087 | ||
1088 | for (;;) { | |
8a5cd31e LP |
1089 | bus_close_io_fds(b); |
1090 | bus_close_inotify_fd(b); | |
a7e3212d | 1091 | |
392cf1d0 SL |
1092 | bus_kill_exec(b); |
1093 | ||
a132bef0 ZJS |
1094 | /* If you provide multiple different bus-addresses, we |
1095 | * try all of them in order and use the first one that | |
1096 | * succeeds. */ | |
15442912 | 1097 | |
1e05d493 | 1098 | if (b->exec_path) |
a7893c6b | 1099 | r = bus_socket_exec(b); |
a132bef0 ZJS |
1100 | else if ((b->nspid > 0 || b->machine) && b->sockaddr.sa.sa_family != AF_UNSPEC) |
1101 | r = bus_container_connect_socket(b); | |
a132bef0 ZJS |
1102 | else if (b->sockaddr.sa.sa_family != AF_UNSPEC) |
1103 | r = bus_socket_connect(b); | |
a132bef0 ZJS |
1104 | else |
1105 | goto next; | |
1106 | ||
1107 | if (r >= 0) { | |
8a5cd31e LP |
1108 | int q; |
1109 | ||
1110 | q = bus_attach_io_events(b); | |
1111 | if (q < 0) | |
1112 | return q; | |
1113 | ||
1114 | q = bus_attach_inotify_event(b); | |
1115 | if (q < 0) | |
1116 | return q; | |
1117 | ||
1118 | return r; | |
2fd9ae2e LP |
1119 | } |
1120 | ||
a132bef0 ZJS |
1121 | b->last_connect_error = -r; |
1122 | ||
1123 | next: | |
2fd9ae2e LP |
1124 | r = bus_parse_next_address(b); |
1125 | if (r < 0) | |
1126 | return r; | |
1127 | if (r == 0) | |
a132bef0 | 1128 | return b->last_connect_error > 0 ? -b->last_connect_error : -ECONNREFUSED; |
de1c301e LP |
1129 | } |
1130 | } | |
1131 | ||
a7e3212d LP |
1132 | int bus_next_address(sd_bus *b) { |
1133 | assert(b); | |
1134 | ||
1135 | bus_reset_parsed_address(b); | |
1136 | return bus_start_address(b); | |
1137 | } | |
1138 | ||
021a1e78 | 1139 | static int bus_start_fd(sd_bus *b) { |
6629161f | 1140 | struct stat st; |
021a1e78 LP |
1141 | int r; |
1142 | ||
1143 | assert(b); | |
e82c9509 LP |
1144 | assert(b->input_fd >= 0); |
1145 | assert(b->output_fd >= 0); | |
021a1e78 | 1146 | |
e82c9509 | 1147 | r = fd_nonblock(b->input_fd, true); |
021a1e78 LP |
1148 | if (r < 0) |
1149 | return r; | |
1150 | ||
e82c9509 | 1151 | r = fd_cloexec(b->input_fd, true); |
021a1e78 LP |
1152 | if (r < 0) |
1153 | return r; | |
1154 | ||
e82c9509 LP |
1155 | if (b->input_fd != b->output_fd) { |
1156 | r = fd_nonblock(b->output_fd, true); | |
1157 | if (r < 0) | |
1158 | return r; | |
1159 | ||
1160 | r = fd_cloexec(b->output_fd, true); | |
1161 | if (r < 0) | |
1162 | return r; | |
1163 | } | |
1164 | ||
6629161f LP |
1165 | if (fstat(b->input_fd, &st) < 0) |
1166 | return -errno; | |
1167 | ||
a132bef0 | 1168 | return bus_socket_take_fd(b); |
021a1e78 LP |
1169 | } |
1170 | ||
d9f644e2 | 1171 | _public_ int sd_bus_start(sd_bus *bus) { |
021a1e78 LP |
1172 | int r; |
1173 | ||
d6888822 | 1174 | assert_return(bus, -EINVAL); |
45b1f410 | 1175 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 LP |
1176 | assert_return(bus->state == BUS_UNSET, -EPERM); |
1177 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
021a1e78 | 1178 | |
3e0e196e | 1179 | bus_set_state(bus, BUS_OPENING); |
021a1e78 | 1180 | |
2181a7f5 LP |
1181 | if (bus->is_server && bus->bus_client) |
1182 | return -EINVAL; | |
1183 | ||
e82c9509 | 1184 | if (bus->input_fd >= 0) |
021a1e78 | 1185 | r = bus_start_fd(bus); |
a132bef0 | 1186 | else if (bus->address || bus->sockaddr.sa.sa_family != AF_UNSPEC || bus->exec_path || bus->machine) |
a7e3212d | 1187 | r = bus_start_address(bus); |
021a1e78 LP |
1188 | else |
1189 | return -EINVAL; | |
1190 | ||
db9bb83f LP |
1191 | if (r < 0) { |
1192 | sd_bus_close(bus); | |
021a1e78 | 1193 | return r; |
db9bb83f | 1194 | } |
021a1e78 LP |
1195 | |
1196 | return bus_send_hello(bus); | |
1197 | } | |
1198 | ||
56fbd718 | 1199 | _public_ int sd_bus_open_with_description(sd_bus **ret, const char *description) { |
af08d2f9 | 1200 | const char *e; |
9df088f1 | 1201 | _cleanup_(bus_freep) sd_bus *b = NULL; |
af08d2f9 LP |
1202 | int r; |
1203 | ||
1204 | assert_return(ret, -EINVAL); | |
1205 | ||
1206 | /* Let's connect to the starter bus if it is set, and | |
1207 | * otherwise to the bus that is appropropriate for the scope | |
1208 | * we are running in */ | |
1209 | ||
1210 | e = secure_getenv("DBUS_STARTER_BUS_TYPE"); | |
1211 | if (e) { | |
1212 | if (streq(e, "system")) | |
56fbd718 | 1213 | return sd_bus_open_system_with_description(ret, description); |
09365592 | 1214 | else if (STR_IN_SET(e, "session", "user")) |
56fbd718 | 1215 | return sd_bus_open_user_with_description(ret, description); |
af08d2f9 LP |
1216 | } |
1217 | ||
1218 | e = secure_getenv("DBUS_STARTER_ADDRESS"); | |
1219 | if (!e) { | |
1220 | if (cg_pid_get_owner_uid(0, NULL) >= 0) | |
56fbd718 | 1221 | return sd_bus_open_user_with_description(ret, description); |
af08d2f9 | 1222 | else |
56fbd718 | 1223 | return sd_bus_open_system_with_description(ret, description); |
af08d2f9 LP |
1224 | } |
1225 | ||
1226 | r = sd_bus_new(&b); | |
1227 | if (r < 0) | |
1228 | return r; | |
1229 | ||
1230 | r = sd_bus_set_address(b, e); | |
1231 | if (r < 0) | |
9df088f1 | 1232 | return r; |
af08d2f9 LP |
1233 | |
1234 | b->bus_client = true; | |
1235 | ||
1236 | /* We don't know whether the bus is trusted or not, so better | |
1237 | * be safe, and authenticate everything */ | |
1238 | b->trusted = false; | |
694859b5 | 1239 | b->is_local = false; |
cf226cfc | 1240 | b->creds_mask |= SD_BUS_CREDS_UID | SD_BUS_CREDS_EUID | SD_BUS_CREDS_EFFECTIVE_CAPS; |
af08d2f9 LP |
1241 | |
1242 | r = sd_bus_start(b); | |
1243 | if (r < 0) | |
9df088f1 | 1244 | return r; |
af08d2f9 | 1245 | |
9df088f1 | 1246 | *ret = TAKE_PTR(b); |
af08d2f9 | 1247 | return 0; |
af08d2f9 LP |
1248 | } |
1249 | ||
56fbd718 ZJS |
1250 | _public_ int sd_bus_open(sd_bus **ret) { |
1251 | return sd_bus_open_with_description(ret, NULL); | |
1252 | } | |
1253 | ||
09365592 | 1254 | int bus_set_address_system(sd_bus *b) { |
de1c301e | 1255 | const char *e; |
09365592 LP |
1256 | assert(b); |
1257 | ||
1258 | e = secure_getenv("DBUS_SYSTEM_BUS_ADDRESS"); | |
1259 | if (e) | |
1260 | return sd_bus_set_address(b, e); | |
1261 | ||
057171ef | 1262 | return sd_bus_set_address(b, DEFAULT_SYSTEM_BUS_ADDRESS); |
09365592 LP |
1263 | } |
1264 | ||
56fbd718 | 1265 | _public_ int sd_bus_open_system_with_description(sd_bus **ret, const char *description) { |
9df088f1 | 1266 | _cleanup_(bus_freep) sd_bus *b = NULL; |
de1c301e LP |
1267 | int r; |
1268 | ||
d6888822 | 1269 | assert_return(ret, -EINVAL); |
de1c301e | 1270 | |
021a1e78 LP |
1271 | r = sd_bus_new(&b); |
1272 | if (r < 0) | |
1273 | return r; | |
1274 | ||
56fbd718 ZJS |
1275 | if (description) { |
1276 | r = sd_bus_set_description(b, description); | |
1277 | if (r < 0) | |
9df088f1 | 1278 | return r; |
56fbd718 ZJS |
1279 | } |
1280 | ||
09365592 | 1281 | r = bus_set_address_system(b); |
e3dd987c | 1282 | if (r < 0) |
9df088f1 | 1283 | return r; |
de1c301e | 1284 | |
94bbf1ba | 1285 | b->bus_client = true; |
5972fe95 | 1286 | b->is_system = true; |
021a1e78 | 1287 | |
adacb957 LP |
1288 | /* Let's do per-method access control on the system bus. We |
1289 | * need the caller's UID and capability set for that. */ | |
1290 | b->trusted = false; | |
cf226cfc | 1291 | b->creds_mask |= SD_BUS_CREDS_UID | SD_BUS_CREDS_EUID | SD_BUS_CREDS_EFFECTIVE_CAPS; |
694859b5 | 1292 | b->is_local = true; |
adacb957 | 1293 | |
021a1e78 LP |
1294 | r = sd_bus_start(b); |
1295 | if (r < 0) | |
9df088f1 | 1296 | return r; |
de1c301e | 1297 | |
9df088f1 | 1298 | *ret = TAKE_PTR(b); |
de1c301e LP |
1299 | return 0; |
1300 | } | |
1301 | ||
56fbd718 ZJS |
1302 | _public_ int sd_bus_open_system(sd_bus **ret) { |
1303 | return sd_bus_open_system_with_description(ret, NULL); | |
1304 | } | |
1305 | ||
09365592 | 1306 | int bus_set_address_user(sd_bus *b) { |
de1c301e | 1307 | const char *e; |
a132bef0 | 1308 | _cleanup_free_ char *ee = NULL, *s = NULL; |
de1c301e | 1309 | |
09365592 | 1310 | assert(b); |
021a1e78 | 1311 | |
6c03089c | 1312 | e = secure_getenv("DBUS_SESSION_BUS_ADDRESS"); |
09365592 LP |
1313 | if (e) |
1314 | return sd_bus_set_address(b, e); | |
1315 | ||
1316 | e = secure_getenv("XDG_RUNTIME_DIR"); | |
a132bef0 ZJS |
1317 | if (!e) |
1318 | return -ENOENT; | |
e3dd987c | 1319 | |
a132bef0 ZJS |
1320 | ee = bus_address_escape(e); |
1321 | if (!ee) | |
1322 | return -ENOMEM; | |
de1c301e | 1323 | |
15ca0a42 | 1324 | if (asprintf(&s, DEFAULT_USER_BUS_ADDRESS_FMT, ee) < 0) |
09365592 LP |
1325 | return -ENOMEM; |
1326 | ||
ae2a15bc | 1327 | b->address = TAKE_PTR(s); |
a132bef0 | 1328 | |
09365592 LP |
1329 | return 0; |
1330 | } | |
1331 | ||
56fbd718 | 1332 | _public_ int sd_bus_open_user_with_description(sd_bus **ret, const char *description) { |
9df088f1 | 1333 | _cleanup_(bus_freep) sd_bus *b = NULL; |
09365592 LP |
1334 | int r; |
1335 | ||
1336 | assert_return(ret, -EINVAL); | |
1337 | ||
1338 | r = sd_bus_new(&b); | |
1339 | if (r < 0) | |
1340 | return r; | |
1341 | ||
56fbd718 ZJS |
1342 | if (description) { |
1343 | r = sd_bus_set_description(b, description); | |
1344 | if (r < 0) | |
9df088f1 | 1345 | return r; |
56fbd718 ZJS |
1346 | } |
1347 | ||
09365592 LP |
1348 | r = bus_set_address_user(b); |
1349 | if (r < 0) | |
9df088f1 | 1350 | return r; |
09365592 | 1351 | |
94bbf1ba | 1352 | b->bus_client = true; |
5972fe95 | 1353 | b->is_user = true; |
de1c301e | 1354 | |
adacb957 LP |
1355 | /* We don't do any per-method access control on the user |
1356 | * bus. */ | |
1357 | b->trusted = true; | |
694859b5 | 1358 | b->is_local = true; |
adacb957 | 1359 | |
021a1e78 | 1360 | r = sd_bus_start(b); |
2571ead1 | 1361 | if (r < 0) |
9df088f1 | 1362 | return r; |
de1c301e | 1363 | |
9df088f1 | 1364 | *ret = TAKE_PTR(b); |
de1c301e LP |
1365 | return 0; |
1366 | } | |
1367 | ||
56fbd718 ZJS |
1368 | _public_ int sd_bus_open_user(sd_bus **ret) { |
1369 | return sd_bus_open_user_with_description(ret, NULL); | |
1370 | } | |
1371 | ||
09365592 | 1372 | int bus_set_address_system_remote(sd_bus *b, const char *host) { |
0f8bd8de | 1373 | _cleanup_free_ char *e = NULL; |
b85b4a70 | 1374 | char *m = NULL, *c = NULL, *a, *rbracket = NULL, *p = NULL; |
0f8bd8de | 1375 | |
09365592 LP |
1376 | assert(b); |
1377 | assert(host); | |
0f8bd8de | 1378 | |
b85b4a70 SL |
1379 | /* Skip ":"s in ipv6 addresses */ |
1380 | if (*host == '[') { | |
1381 | char *t; | |
7f0d207d | 1382 | |
b85b4a70 SL |
1383 | rbracket = strchr(host, ']'); |
1384 | if (!rbracket) | |
1385 | return -EINVAL; | |
1386 | t = strndupa(host + 1, rbracket - host - 1); | |
1387 | e = bus_address_escape(t); | |
1388 | if (!e) | |
1389 | return -ENOMEM; | |
6a555849 | 1390 | } else if ((a = strchr(host, '@'))) { |
b85b4a70 SL |
1391 | if (*(a + 1) == '[') { |
1392 | _cleanup_free_ char *t = NULL; | |
1393 | ||
1394 | rbracket = strchr(a + 1, ']'); | |
1395 | if (!rbracket) | |
1396 | return -EINVAL; | |
1397 | t = new0(char, strlen(host)); | |
1398 | if (!t) | |
1399 | return -ENOMEM; | |
1400 | strncat(t, host, a - host + 1); | |
1401 | strncat(t, a + 2, rbracket - a - 2); | |
7f0d207d LP |
1402 | e = bus_address_escape(t); |
1403 | if (!e) | |
1404 | return -ENOMEM; | |
6a555849 SL |
1405 | } else if (*(a + 1) == '\0' || strchr(a + 1, '@')) |
1406 | return -EINVAL; | |
1407 | } | |
b85b4a70 SL |
1408 | |
1409 | /* Let's see if a port was given */ | |
1410 | m = strchr(rbracket ? rbracket + 1 : host, ':'); | |
1411 | if (m) { | |
1412 | char *t; | |
1413 | bool got_forward_slash = false; | |
7f0d207d | 1414 | |
b85b4a70 SL |
1415 | p = m + 1; |
1416 | ||
1417 | t = strchr(p, '/'); | |
1418 | if (t) { | |
1419 | p = strndupa(p, t - p); | |
1420 | got_forward_slash = true; | |
1421 | } | |
1422 | ||
6a555849 | 1423 | if (!in_charset(p, "0123456789") || *p == '\0') { |
b85b4a70 SL |
1424 | if (!machine_name_is_valid(p) || got_forward_slash) |
1425 | return -EINVAL; | |
490c5a37 LP |
1426 | |
1427 | m = TAKE_PTR(p); | |
1428 | goto interpret_port_as_machine_old_syntax; | |
7f0d207d LP |
1429 | } |
1430 | } | |
1431 | ||
b85b4a70 SL |
1432 | /* Let's see if a machine was given */ |
1433 | m = strchr(rbracket ? rbracket + 1 : host, '/'); | |
1434 | if (m) { | |
1435 | m++; | |
1436 | interpret_port_as_machine_old_syntax: | |
1437 | /* Let's make sure this is not a port of some kind, | |
1438 | * and is a valid machine name. */ | |
1439 | if (!in_charset(m, "0123456789") && machine_name_is_valid(m)) | |
1440 | c = strjoina(",argv", p ? "7" : "5", "=--machine=", m); | |
1441 | } | |
1442 | ||
7f0d207d | 1443 | if (!e) { |
b85b4a70 SL |
1444 | char *t; |
1445 | ||
1446 | t = strndupa(host, strcspn(host, ":/")); | |
1447 | ||
1448 | e = bus_address_escape(t); | |
7f0d207d LP |
1449 | if (!e) |
1450 | return -ENOMEM; | |
1451 | } | |
0f8bd8de | 1452 | |
b85b4a70 SL |
1453 | a = strjoin("unixexec:path=ssh,argv1=-xT", p ? ",argv2=-p,argv3=" : "", strempty(p), |
1454 | ",argv", p ? "4" : "2", "=--,argv", p ? "5" : "3", "=", e, | |
1455 | ",argv", p ? "6" : "4", "=systemd-stdio-bridge", c); | |
b4ca3f45 | 1456 | if (!a) |
0f8bd8de | 1457 | return -ENOMEM; |
a7893c6b | 1458 | |
0639f135 ZJS |
1459 | return free_and_replace(b->address, a); |
1460 | } | |
09365592 LP |
1461 | |
1462 | _public_ int sd_bus_open_system_remote(sd_bus **ret, const char *host) { | |
9df088f1 | 1463 | _cleanup_(bus_freep) sd_bus *b = NULL; |
09365592 LP |
1464 | int r; |
1465 | ||
1466 | assert_return(host, -EINVAL); | |
1467 | assert_return(ret, -EINVAL); | |
1468 | ||
9df088f1 | 1469 | r = sd_bus_new(&b); |
09365592 | 1470 | if (r < 0) |
a7893c6b | 1471 | return r; |
a7893c6b | 1472 | |
9df088f1 | 1473 | r = bus_set_address_system_remote(b, host); |
09365592 | 1474 | if (r < 0) |
9df088f1 | 1475 | return r; |
09365592 | 1476 | |
9df088f1 ZJS |
1477 | b->bus_client = true; |
1478 | b->trusted = false; | |
1479 | b->is_system = true; | |
1480 | b->is_local = false; | |
a7893c6b | 1481 | |
9df088f1 | 1482 | r = sd_bus_start(b); |
09365592 | 1483 | if (r < 0) |
9df088f1 | 1484 | return r; |
a7893c6b | 1485 | |
9df088f1 | 1486 | *ret = TAKE_PTR(b); |
a7893c6b LP |
1487 | return 0; |
1488 | } | |
1489 | ||
de33fc62 | 1490 | int bus_set_address_system_machine(sd_bus *b, const char *machine) { |
a7893c6b | 1491 | _cleanup_free_ char *e = NULL; |
b4ca3f45 | 1492 | char *a; |
a7893c6b | 1493 | |
09365592 LP |
1494 | assert(b); |
1495 | assert(machine); | |
a7893c6b LP |
1496 | |
1497 | e = bus_address_escape(machine); | |
1498 | if (!e) | |
1499 | return -ENOMEM; | |
1500 | ||
b4ca3f45 YW |
1501 | a = strjoin("x-machine-unix:machine=", e); |
1502 | if (!a) | |
a7893c6b | 1503 | return -ENOMEM; |
0f8bd8de | 1504 | |
0639f135 | 1505 | return free_and_replace(b->address, a); |
09365592 LP |
1506 | } |
1507 | ||
de33fc62 | 1508 | _public_ int sd_bus_open_system_machine(sd_bus **ret, const char *machine) { |
9df088f1 | 1509 | _cleanup_(bus_freep) sd_bus *b = NULL; |
09365592 LP |
1510 | int r; |
1511 | ||
1512 | assert_return(machine, -EINVAL); | |
1513 | assert_return(ret, -EINVAL); | |
1e5057b9 | 1514 | assert_return(streq(machine, ".host") || machine_name_is_valid(machine), -EINVAL); |
09365592 | 1515 | |
9df088f1 | 1516 | r = sd_bus_new(&b); |
09365592 | 1517 | if (r < 0) |
0f8bd8de | 1518 | return r; |
0f8bd8de | 1519 | |
9df088f1 | 1520 | r = bus_set_address_system_machine(b, machine); |
09365592 | 1521 | if (r < 0) |
9df088f1 | 1522 | return r; |
09365592 | 1523 | |
9df088f1 ZJS |
1524 | b->bus_client = true; |
1525 | b->trusted = false; | |
1526 | b->is_system = true; | |
1527 | b->is_local = false; | |
0f8bd8de | 1528 | |
9df088f1 | 1529 | r = sd_bus_start(b); |
09365592 | 1530 | if (r < 0) |
9df088f1 | 1531 | return r; |
0f8bd8de | 1532 | |
9df088f1 | 1533 | *ret = TAKE_PTR(b); |
0f8bd8de LP |
1534 | return 0; |
1535 | } | |
1536 | ||
d9f644e2 | 1537 | _public_ void sd_bus_close(sd_bus *bus) { |
de1c301e LP |
1538 | if (!bus) |
1539 | return; | |
d5a2b9a6 LP |
1540 | if (bus->state == BUS_CLOSED) |
1541 | return; | |
1542 | if (bus_pid_changed(bus)) | |
f54514f3 LP |
1543 | return; |
1544 | ||
392cf1d0 SL |
1545 | /* Don't leave ssh hanging around */ |
1546 | bus_kill_exec(bus); | |
1547 | ||
3e0e196e | 1548 | bus_set_state(bus, BUS_CLOSED); |
e82c9509 | 1549 | |
40ca29a1 LP |
1550 | sd_bus_detach_event(bus); |
1551 | ||
0e586eae LP |
1552 | /* Drop all queued messages so that they drop references to |
1553 | * the bus object and the bus may be freed */ | |
1554 | bus_reset_queues(bus); | |
1555 | ||
8a5cd31e LP |
1556 | bus_close_io_fds(bus); |
1557 | bus_close_inotify_fd(bus); | |
de1c301e LP |
1558 | } |
1559 | ||
03976f7b | 1560 | _public_ sd_bus* sd_bus_flush_close_unref(sd_bus *bus) { |
03976f7b LP |
1561 | if (!bus) |
1562 | return NULL; | |
1563 | ||
392cf1d0 SL |
1564 | /* Have to do this before flush() to prevent hang */ |
1565 | bus_kill_exec(bus); | |
1566 | ||
03976f7b LP |
1567 | sd_bus_flush(bus); |
1568 | sd_bus_close(bus); | |
1569 | ||
1570 | return sd_bus_unref(bus); | |
1571 | } | |
1572 | ||
98c5bbc8 | 1573 | void bus_enter_closing(sd_bus *bus) { |
718db961 LP |
1574 | assert(bus); |
1575 | ||
8a5cd31e | 1576 | if (!IN_SET(bus->state, BUS_WATCH_BIND, BUS_OPENING, BUS_AUTHENTICATING, BUS_HELLO, BUS_RUNNING)) |
718db961 LP |
1577 | return; |
1578 | ||
3e0e196e | 1579 | bus_set_state(bus, BUS_CLOSING); |
718db961 LP |
1580 | } |
1581 | ||
1c71f7f3 | 1582 | DEFINE_PUBLIC_ATOMIC_REF_UNREF_FUNC(sd_bus, sd_bus, bus_free); |
de1c301e | 1583 | |
d9f644e2 | 1584 | _public_ int sd_bus_is_open(sd_bus *bus) { |
d6888822 | 1585 | assert_return(bus, -EINVAL); |
45b1f410 | 1586 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 | 1587 | assert_return(!bus_pid_changed(bus), -ECHILD); |
e3017af9 | 1588 | |
f54514f3 | 1589 | return BUS_IS_OPEN(bus->state); |
e3017af9 LP |
1590 | } |
1591 | ||
bdbc8669 LP |
1592 | _public_ int sd_bus_is_ready(sd_bus *bus) { |
1593 | assert_return(bus, -EINVAL); | |
45b1f410 | 1594 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
bdbc8669 LP |
1595 | assert_return(!bus_pid_changed(bus), -ECHILD); |
1596 | ||
1597 | return bus->state == BUS_RUNNING; | |
1598 | } | |
1599 | ||
d9f644e2 | 1600 | _public_ int sd_bus_can_send(sd_bus *bus, char type) { |
d728d708 LP |
1601 | int r; |
1602 | ||
d6888822 | 1603 | assert_return(bus, -EINVAL); |
45b1f410 | 1604 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 LP |
1605 | assert_return(bus->state != BUS_UNSET, -ENOTCONN); |
1606 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
de1c301e | 1607 | |
c7db1984 | 1608 | if (bus->is_monitor) |
09365592 LP |
1609 | return 0; |
1610 | ||
d728d708 | 1611 | if (type == SD_BUS_TYPE_UNIX_FD) { |
c7db1984 | 1612 | if (!bus->accept_fd) |
021a1e78 LP |
1613 | return 0; |
1614 | ||
20902f3e | 1615 | r = bus_ensure_running(bus); |
d728d708 LP |
1616 | if (r < 0) |
1617 | return r; | |
de1c301e | 1618 | |
d728d708 LP |
1619 | return bus->can_fds; |
1620 | } | |
1621 | ||
1622 | return bus_type_is_valid(type); | |
de1c301e LP |
1623 | } |
1624 | ||
5c302692 | 1625 | _public_ int sd_bus_get_bus_id(sd_bus *bus, sd_id128_t *id) { |
d728d708 | 1626 | int r; |
de1c301e | 1627 | |
d6888822 | 1628 | assert_return(bus, -EINVAL); |
45b1f410 | 1629 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
f7fce345 | 1630 | assert_return(id, -EINVAL); |
d6888822 | 1631 | assert_return(!bus_pid_changed(bus), -ECHILD); |
de1c301e | 1632 | |
20902f3e | 1633 | r = bus_ensure_running(bus); |
d728d708 LP |
1634 | if (r < 0) |
1635 | return r; | |
de1c301e | 1636 | |
f7fce345 | 1637 | *id = bus->server_id; |
d728d708 | 1638 | return 0; |
de1c301e LP |
1639 | } |
1640 | ||
3df7a7e6 | 1641 | static int bus_seal_message(sd_bus *b, sd_bus_message *m, usec_t timeout) { |
48ef41a3 LP |
1642 | int r; |
1643 | ||
7adc46fc | 1644 | assert(b); |
de1c301e LP |
1645 | assert(m); |
1646 | ||
aea93deb LP |
1647 | if (m->sealed) { |
1648 | /* If we copy the same message to multiple | |
693eb9a2 | 1649 | * destinations, avoid using the same cookie |
aea93deb | 1650 | * numbers. */ |
693eb9a2 | 1651 | b->cookie = MAX(b->cookie, BUS_MESSAGE_COOKIE(m)); |
de1c301e | 1652 | return 0; |
aea93deb | 1653 | } |
de1c301e | 1654 | |
385b2eb2 YW |
1655 | if (timeout == 0) { |
1656 | r = sd_bus_get_method_call_timeout(b, &timeout); | |
1657 | if (r < 0) | |
1658 | return r; | |
1659 | } | |
3df7a7e6 | 1660 | |
48ef41a3 LP |
1661 | if (!m->sender && b->patch_sender) { |
1662 | r = sd_bus_message_set_sender(m, b->patch_sender); | |
1663 | if (r < 0) | |
1664 | return r; | |
1665 | } | |
1666 | ||
75bcbcf2 | 1667 | return sd_bus_message_seal(m, ++b->cookie, timeout); |
de1c301e LP |
1668 | } |
1669 | ||
e1c433c6 | 1670 | static int bus_remarshal_message(sd_bus *b, sd_bus_message **m) { |
908b8a42 DH |
1671 | bool remarshal = false; |
1672 | ||
e1c433c6 LP |
1673 | assert(b); |
1674 | ||
908b8a42 DH |
1675 | /* wrong packet version */ |
1676 | if (b->message_version != 0 && b->message_version != (*m)->header->version) | |
1677 | remarshal = true; | |
1678 | ||
1679 | /* wrong packet endianness */ | |
1680 | if (b->message_endian != 0 && b->message_endian != (*m)->header->endian) | |
1681 | remarshal = true; | |
1682 | ||
908b8a42 | 1683 | return remarshal ? bus_message_remarshal(b, m) : 0; |
e1c433c6 LP |
1684 | } |
1685 | ||
7adc46fc LP |
1686 | int bus_seal_synthetic_message(sd_bus *b, sd_bus_message *m) { |
1687 | assert(b); | |
1688 | assert(m); | |
1689 | ||
52cd5877 LP |
1690 | /* Fake some timestamps, if they were requested, and not |
1691 | * already initialized */ | |
c7db1984 | 1692 | if (b->attach_timestamp) { |
52cd5877 LP |
1693 | if (m->realtime <= 0) |
1694 | m->realtime = now(CLOCK_REALTIME); | |
1695 | ||
1696 | if (m->monotonic <= 0) | |
1697 | m->monotonic = now(CLOCK_MONOTONIC); | |
1698 | } | |
1699 | ||
7adc46fc LP |
1700 | /* The bus specification says the serial number cannot be 0, |
1701 | * hence let's fill something in for synthetic messages. Since | |
1702 | * synthetic messages might have a fake sender and we don't | |
1703 | * want to interfere with the real sender's serial numbers we | |
6f285378 | 1704 | * pick a fixed, artificial one. We use (uint32_t) -1 rather |
7adc46fc LP |
1705 | * than (uint64_t) -1 since dbus1 only had 32bit identifiers, |
1706 | * even though kdbus can do 64bit. */ | |
75bcbcf2 | 1707 | return sd_bus_message_seal(m, 0xFFFFFFFFULL, 0); |
7adc46fc LP |
1708 | } |
1709 | ||
66baf8c6 | 1710 | static int bus_write_message(sd_bus *bus, sd_bus_message *m, size_t *idx) { |
2e3db52d LP |
1711 | int r; |
1712 | ||
718db961 | 1713 | assert(bus); |
2e3db52d | 1714 | assert(m); |
718db961 | 1715 | |
a132bef0 | 1716 | r = bus_socket_write_message(bus, m, idx); |
2e3db52d LP |
1717 | if (r <= 0) |
1718 | return r; | |
1719 | ||
a132bef0 | 1720 | if (*idx >= BUS_MESSAGE_SIZE(m)) |
e32fd6b4 | 1721 | 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 |
1722 | bus_message_type_to_string(m->header->type), |
1723 | strna(sd_bus_message_get_sender(m)), | |
1724 | strna(sd_bus_message_get_destination(m)), | |
1725 | strna(sd_bus_message_get_path(m)), | |
1726 | strna(sd_bus_message_get_interface(m)), | |
1727 | strna(sd_bus_message_get_member(m)), | |
42c4ebcb LP |
1728 | BUS_MESSAGE_COOKIE(m), |
1729 | m->reply_cookie, | |
e32fd6b4 | 1730 | strna(m->root_container.signature), |
e28d0865 | 1731 | strna(m->error.name), |
2e3db52d LP |
1732 | strna(m->error.message)); |
1733 | ||
1734 | return r; | |
718db961 LP |
1735 | } |
1736 | ||
de1c301e | 1737 | static int dispatch_wqueue(sd_bus *bus) { |
e3017af9 | 1738 | int r, ret = 0; |
de1c301e LP |
1739 | |
1740 | assert(bus); | |
945c2931 | 1741 | assert(IN_SET(bus->state, BUS_RUNNING, BUS_HELLO)); |
de1c301e | 1742 | |
de1c301e LP |
1743 | while (bus->wqueue_size > 0) { |
1744 | ||
66baf8c6 | 1745 | r = bus_write_message(bus, bus->wqueue[0], &bus->windex); |
718db961 | 1746 | if (r < 0) |
de1c301e | 1747 | return r; |
718db961 | 1748 | else if (r == 0) |
e3017af9 LP |
1749 | /* Didn't do anything this time */ |
1750 | return ret; | |
a132bef0 | 1751 | else if (bus->windex >= BUS_MESSAGE_SIZE(bus->wqueue[0])) { |
de1c301e LP |
1752 | /* Fully written. Let's drop the entry from |
1753 | * the queue. | |
1754 | * | |
1755 | * This isn't particularly optimized, but | |
1756 | * well, this is supposed to be our worst-case | |
1757 | * buffer only, and the socket buffer is | |
1758 | * supposed to be our primary buffer, and if | |
1759 | * it got full, then all bets are off | |
1760 | * anyway. */ | |
1761 | ||
313cefa1 | 1762 | bus->wqueue_size--; |
c4e6e242 | 1763 | sd_bus_message_unref(bus->wqueue[0]); |
de1c301e LP |
1764 | memmove(bus->wqueue, bus->wqueue + 1, sizeof(sd_bus_message*) * bus->wqueue_size); |
1765 | bus->windex = 0; | |
1766 | ||
e3017af9 | 1767 | ret = 1; |
de1c301e LP |
1768 | } |
1769 | } | |
1770 | ||
e3017af9 | 1771 | return ret; |
de1c301e LP |
1772 | } |
1773 | ||
766c5809 | 1774 | static int bus_read_message(sd_bus *bus, bool hint_priority, int64_t priority) { |
7d22c717 LP |
1775 | assert(bus); |
1776 | ||
a132bef0 | 1777 | return bus_socket_read_message(bus); |
7d22c717 LP |
1778 | } |
1779 | ||
7adc46fc | 1780 | int bus_rqueue_make_room(sd_bus *bus) { |
821e0756 | 1781 | assert(bus); |
7d22c717 | 1782 | |
821e0756 | 1783 | if (bus->rqueue_size >= BUS_RQUEUE_MAX) |
7d22c717 LP |
1784 | return -ENOBUFS; |
1785 | ||
821e0756 | 1786 | if (!GREEDY_REALLOC(bus->rqueue, bus->rqueue_allocated, bus->rqueue_size + 1)) |
7d22c717 LP |
1787 | return -ENOMEM; |
1788 | ||
7d22c717 LP |
1789 | return 0; |
1790 | } | |
1791 | ||
766c5809 | 1792 | static int dispatch_rqueue(sd_bus *bus, bool hint_priority, int64_t priority, sd_bus_message **m) { |
e3017af9 | 1793 | int r, ret = 0; |
de1c301e LP |
1794 | |
1795 | assert(bus); | |
1796 | assert(m); | |
945c2931 | 1797 | assert(IN_SET(bus->state, BUS_RUNNING, BUS_HELLO)); |
de1c301e | 1798 | |
766c5809 LP |
1799 | /* Note that the priority logic is only available on kdbus, |
1800 | * where the rqueue is unused. We check the rqueue here | |
1801 | * anyway, because it's simple... */ | |
1802 | ||
7d22c717 LP |
1803 | for (;;) { |
1804 | if (bus->rqueue_size > 0) { | |
1805 | /* Dispatch a queued message */ | |
de1c301e | 1806 | |
7d22c717 | 1807 | *m = bus->rqueue[0]; |
313cefa1 | 1808 | bus->rqueue_size--; |
7d22c717 LP |
1809 | memmove(bus->rqueue, bus->rqueue + 1, sizeof(sd_bus_message*) * bus->rqueue_size); |
1810 | return 1; | |
1811 | } | |
de1c301e | 1812 | |
7d22c717 | 1813 | /* Try to read a new message */ |
766c5809 | 1814 | r = bus_read_message(bus, hint_priority, priority); |
718db961 | 1815 | if (r < 0) |
e3017af9 | 1816 | return r; |
e3017af9 LP |
1817 | if (r == 0) |
1818 | return ret; | |
de1c301e | 1819 | |
2e8d788c | 1820 | ret = 1; |
7d22c717 | 1821 | } |
de1c301e LP |
1822 | } |
1823 | ||
66baf8c6 | 1824 | _public_ int sd_bus_send(sd_bus *bus, sd_bus_message *_m, uint64_t *cookie) { |
4afd3348 | 1825 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = sd_bus_message_ref(_m); |
de1c301e LP |
1826 | int r; |
1827 | ||
d6888822 | 1828 | assert_return(m, -EINVAL); |
9030ca46 LP |
1829 | |
1830 | if (!bus) | |
1831 | bus = m->bus; | |
1832 | ||
d6888822 | 1833 | assert_return(!bus_pid_changed(bus), -ECHILD); |
021a1e78 | 1834 | |
a3d59cd1 LP |
1835 | if (!BUS_IS_OPEN(bus->state)) |
1836 | return -ENOTCONN; | |
1837 | ||
021a1e78 LP |
1838 | if (m->n_fds > 0) { |
1839 | r = sd_bus_can_send(bus, SD_BUS_TYPE_UNIX_FD); | |
1840 | if (r < 0) | |
1841 | return r; | |
1842 | if (r == 0) | |
15411c0c | 1843 | return -EOPNOTSUPP; |
021a1e78 | 1844 | } |
de1c301e | 1845 | |
693eb9a2 | 1846 | /* If the cookie number isn't kept, then we know that no reply |
29f6aadd | 1847 | * is expected */ |
693eb9a2 | 1848 | if (!cookie && !m->sealed) |
0461f8cd | 1849 | m->header->flags |= BUS_MESSAGE_NO_REPLY_EXPECTED; |
29f6aadd | 1850 | |
3df7a7e6 | 1851 | r = bus_seal_message(bus, m, 0); |
de1c301e LP |
1852 | if (r < 0) |
1853 | return r; | |
1854 | ||
441d56a1 | 1855 | /* Remarshall if we have to. This will possibly unref the |
e1c433c6 LP |
1856 | * message and place a replacement in m */ |
1857 | r = bus_remarshal_message(bus, &m); | |
1858 | if (r < 0) | |
1859 | return r; | |
1860 | ||
5407f2de LP |
1861 | /* If this is a reply and no reply was requested, then let's |
1862 | * suppress this, if we can */ | |
997eadb5 LP |
1863 | if (m->dont_send) |
1864 | goto finish; | |
5407f2de | 1865 | |
945c2931 | 1866 | if (IN_SET(bus->state, BUS_RUNNING, BUS_HELLO) && bus->wqueue_size <= 0) { |
de1c301e LP |
1867 | size_t idx = 0; |
1868 | ||
66baf8c6 | 1869 | r = bus_write_message(bus, m, &idx); |
32f46480 | 1870 | if (r < 0) { |
103a5027 | 1871 | if (IN_SET(r, -ENOTCONN, -ECONNRESET, -EPIPE, -ESHUTDOWN)) { |
32f46480 | 1872 | bus_enter_closing(bus); |
441d56a1 LP |
1873 | return -ECONNRESET; |
1874 | } | |
32f46480 | 1875 | |
de1c301e | 1876 | return r; |
997eadb5 LP |
1877 | } |
1878 | ||
a132bef0 | 1879 | if (idx < BUS_MESSAGE_SIZE(m)) { |
de1c301e LP |
1880 | /* Wasn't fully written. So let's remember how |
1881 | * much was written. Note that the first entry | |
1882 | * of the wqueue array is always allocated so | |
1883 | * that we always can remember how much was | |
1884 | * written. */ | |
1885 | bus->wqueue[0] = sd_bus_message_ref(m); | |
1886 | bus->wqueue_size = 1; | |
1887 | bus->windex = idx; | |
1888 | } | |
997eadb5 | 1889 | |
de1c301e | 1890 | } else { |
de1c301e LP |
1891 | /* Just append it to the queue. */ |
1892 | ||
25220239 | 1893 | if (bus->wqueue_size >= BUS_WQUEUE_MAX) |
de1c301e LP |
1894 | return -ENOBUFS; |
1895 | ||
821e0756 | 1896 | if (!GREEDY_REALLOC(bus->wqueue, bus->wqueue_allocated, bus->wqueue_size + 1)) |
de1c301e LP |
1897 | return -ENOMEM; |
1898 | ||
313cefa1 | 1899 | bus->wqueue[bus->wqueue_size++] = sd_bus_message_ref(m); |
de1c301e LP |
1900 | } |
1901 | ||
997eadb5 | 1902 | finish: |
693eb9a2 LP |
1903 | if (cookie) |
1904 | *cookie = BUS_MESSAGE_COOKIE(m); | |
de1c301e | 1905 | |
7a37d625 | 1906 | return 1; |
de1c301e LP |
1907 | } |
1908 | ||
693eb9a2 | 1909 | _public_ int sd_bus_send_to(sd_bus *bus, sd_bus_message *m, const char *destination, uint64_t *cookie) { |
911121a7 LP |
1910 | int r; |
1911 | ||
911121a7 | 1912 | assert_return(m, -EINVAL); |
9030ca46 LP |
1913 | |
1914 | if (!bus) | |
1915 | bus = m->bus; | |
1916 | ||
911121a7 LP |
1917 | assert_return(!bus_pid_changed(bus), -ECHILD); |
1918 | ||
a3d59cd1 LP |
1919 | if (!BUS_IS_OPEN(bus->state)) |
1920 | return -ENOTCONN; | |
1921 | ||
911121a7 LP |
1922 | if (!streq_ptr(m->destination, destination)) { |
1923 | ||
1924 | if (!destination) | |
1925 | return -EEXIST; | |
1926 | ||
1927 | r = sd_bus_message_set_destination(m, destination); | |
1928 | if (r < 0) | |
1929 | return r; | |
1930 | } | |
1931 | ||
693eb9a2 | 1932 | return sd_bus_send(bus, m, cookie); |
911121a7 LP |
1933 | } |
1934 | ||
ac8029fc LP |
1935 | static usec_t calc_elapse(sd_bus *bus, uint64_t usec) { |
1936 | assert(bus); | |
1937 | ||
de1c301e LP |
1938 | if (usec == (uint64_t) -1) |
1939 | return 0; | |
1940 | ||
ac8029fc LP |
1941 | /* We start all timeouts the instant we enter BUS_HELLO/BUS_RUNNING state, so that the don't run in parallel |
1942 | * with any connection setup states. Hence, if a method callback is started earlier than that we just store the | |
1943 | * relative timestamp, and afterwards the absolute one. */ | |
1944 | ||
1945 | if (IN_SET(bus->state, BUS_WATCH_BIND, BUS_OPENING, BUS_AUTHENTICATING)) | |
1946 | return usec; | |
1947 | else | |
1948 | return now(CLOCK_MONOTONIC) + usec; | |
de1c301e LP |
1949 | } |
1950 | ||
e3017af9 LP |
1951 | static int timeout_compare(const void *a, const void *b) { |
1952 | const struct reply_callback *x = a, *y = b; | |
1953 | ||
ac8029fc | 1954 | if (x->timeout_usec != 0 && y->timeout_usec == 0) |
e3017af9 LP |
1955 | return -1; |
1956 | ||
ac8029fc | 1957 | if (x->timeout_usec == 0 && y->timeout_usec != 0) |
e3017af9 LP |
1958 | return 1; |
1959 | ||
9c57a73b | 1960 | return CMP(x->timeout_usec, y->timeout_usec); |
e3017af9 LP |
1961 | } |
1962 | ||
c49b30a2 | 1963 | _public_ int sd_bus_call_async( |
de1c301e | 1964 | sd_bus *bus, |
19befb2d | 1965 | sd_bus_slot **slot, |
e1c433c6 | 1966 | sd_bus_message *_m, |
52f3ba91 | 1967 | sd_bus_message_handler_t callback, |
de1c301e | 1968 | void *userdata, |
19befb2d | 1969 | uint64_t usec) { |
de1c301e | 1970 | |
4afd3348 LP |
1971 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = sd_bus_message_ref(_m); |
1972 | _cleanup_(sd_bus_slot_unrefp) sd_bus_slot *s = NULL; | |
de1c301e LP |
1973 | int r; |
1974 | ||
d6888822 | 1975 | assert_return(m, -EINVAL); |
40ca29a1 | 1976 | assert_return(m->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EINVAL); |
dbc526f0 | 1977 | assert_return(!m->sealed || (!!callback == !(m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED)), -EINVAL); |
9030ca46 LP |
1978 | |
1979 | if (!bus) | |
1980 | bus = m->bus; | |
1981 | ||
d6888822 | 1982 | assert_return(!bus_pid_changed(bus), -ECHILD); |
89ffcd2a | 1983 | |
a3d59cd1 LP |
1984 | if (!BUS_IS_OPEN(bus->state)) |
1985 | return -ENOTCONN; | |
1986 | ||
dbc526f0 LP |
1987 | /* If no callback is specified and there's no interest in a slot, then there's no reason to ask for a reply */ |
1988 | if (!callback && !slot && !m->sealed) | |
1989 | m->header->flags |= BUS_MESSAGE_NO_REPLY_EXPECTED; | |
1990 | ||
c9fe4af7 | 1991 | r = ordered_hashmap_ensure_allocated(&bus->reply_callbacks, &uint64_hash_ops); |
89ffcd2a LP |
1992 | if (r < 0) |
1993 | return r; | |
de1c301e | 1994 | |
3df7a7e6 LP |
1995 | r = prioq_ensure_allocated(&bus->reply_callbacks_prioq, timeout_compare); |
1996 | if (r < 0) | |
1997 | return r; | |
e3017af9 | 1998 | |
3df7a7e6 | 1999 | r = bus_seal_message(bus, m, usec); |
de1c301e LP |
2000 | if (r < 0) |
2001 | return r; | |
2002 | ||
e1c433c6 LP |
2003 | r = bus_remarshal_message(bus, &m); |
2004 | if (r < 0) | |
2005 | return r; | |
2006 | ||
dbc526f0 LP |
2007 | if (slot || callback) { |
2008 | s = bus_slot_allocate(bus, !slot, BUS_REPLY_CALLBACK, sizeof(struct reply_callback), userdata); | |
2009 | if (!s) | |
2010 | return -ENOMEM; | |
de1c301e | 2011 | |
dbc526f0 | 2012 | s->reply_callback.callback = callback; |
de1c301e | 2013 | |
dbc526f0 LP |
2014 | s->reply_callback.cookie = BUS_MESSAGE_COOKIE(m); |
2015 | r = ordered_hashmap_put(bus->reply_callbacks, &s->reply_callback.cookie, &s->reply_callback); | |
e3017af9 | 2016 | if (r < 0) { |
dbc526f0 | 2017 | s->reply_callback.cookie = 0; |
e3017af9 LP |
2018 | return r; |
2019 | } | |
dbc526f0 LP |
2020 | |
2021 | s->reply_callback.timeout_usec = calc_elapse(bus, m->timeout); | |
2022 | if (s->reply_callback.timeout_usec != 0) { | |
2023 | r = prioq_put(bus->reply_callbacks_prioq, &s->reply_callback, &s->reply_callback.prioq_idx); | |
2024 | if (r < 0) { | |
2025 | s->reply_callback.timeout_usec = 0; | |
2026 | return r; | |
2027 | } | |
2028 | } | |
e3017af9 LP |
2029 | } |
2030 | ||
dbc526f0 | 2031 | r = sd_bus_send(bus, m, s ? &s->reply_callback.cookie : NULL); |
19befb2d | 2032 | if (r < 0) |
de1c301e | 2033 | return r; |
de1c301e | 2034 | |
19befb2d LP |
2035 | if (slot) |
2036 | *slot = s; | |
2037 | s = NULL; | |
e3017af9 | 2038 | |
19befb2d | 2039 | return r; |
de1c301e LP |
2040 | } |
2041 | ||
20902f3e | 2042 | int bus_ensure_running(sd_bus *bus) { |
89ffcd2a LP |
2043 | int r; |
2044 | ||
2045 | assert(bus); | |
2046 | ||
945c2931 | 2047 | if (IN_SET(bus->state, BUS_UNSET, BUS_CLOSED, BUS_CLOSING)) |
021a1e78 | 2048 | return -ENOTCONN; |
d728d708 LP |
2049 | if (bus->state == BUS_RUNNING) |
2050 | return 1; | |
89ffcd2a LP |
2051 | |
2052 | for (;;) { | |
2053 | r = sd_bus_process(bus, NULL); | |
2054 | if (r < 0) | |
2055 | return r; | |
d728d708 LP |
2056 | if (bus->state == BUS_RUNNING) |
2057 | return 1; | |
e3017af9 LP |
2058 | if (r > 0) |
2059 | continue; | |
89ffcd2a LP |
2060 | |
2061 | r = sd_bus_wait(bus, (uint64_t) -1); | |
2062 | if (r < 0) | |
2063 | return r; | |
2064 | } | |
2065 | } | |
2066 | ||
97f82db3 | 2067 | _public_ int sd_bus_call( |
de1c301e | 2068 | sd_bus *bus, |
97f82db3 | 2069 | sd_bus_message *_m, |
de1c301e LP |
2070 | uint64_t usec, |
2071 | sd_bus_error *error, | |
2072 | sd_bus_message **reply) { | |
2073 | ||
4afd3348 | 2074 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = sd_bus_message_ref(_m); |
de1c301e | 2075 | usec_t timeout; |
693eb9a2 | 2076 | uint64_t cookie; |
7d22c717 LP |
2077 | unsigned i; |
2078 | int r; | |
de1c301e | 2079 | |
759e02e7 LP |
2080 | bus_assert_return(m, -EINVAL, error); |
2081 | bus_assert_return(m->header->type == SD_BUS_MESSAGE_METHOD_CALL, -EINVAL, error); | |
2082 | bus_assert_return(!(m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED), -EINVAL, error); | |
2083 | bus_assert_return(!bus_error_is_dirty(error), -EINVAL, error); | |
9030ca46 LP |
2084 | |
2085 | if (!bus) | |
2086 | bus = m->bus; | |
2087 | ||
759e02e7 | 2088 | bus_assert_return(!bus_pid_changed(bus), -ECHILD, error); |
97f82db3 | 2089 | |
759e02e7 LP |
2090 | if (!BUS_IS_OPEN(bus->state)) { |
2091 | r = -ENOTCONN; | |
2092 | goto fail; | |
2093 | } | |
a3d59cd1 | 2094 | |
97f82db3 KS |
2095 | r = bus_ensure_running(bus); |
2096 | if (r < 0) | |
759e02e7 | 2097 | goto fail; |
97f82db3 | 2098 | |
a43b9ca3 | 2099 | i = bus->rqueue_size; |
97f82db3 KS |
2100 | |
2101 | r = bus_seal_message(bus, m, usec); | |
2102 | if (r < 0) | |
759e02e7 | 2103 | goto fail; |
97f82db3 KS |
2104 | |
2105 | r = bus_remarshal_message(bus, &m); | |
2106 | if (r < 0) | |
759e02e7 | 2107 | goto fail; |
97f82db3 | 2108 | |
66baf8c6 | 2109 | r = sd_bus_send(bus, m, &cookie); |
de1c301e | 2110 | if (r < 0) |
759e02e7 | 2111 | goto fail; |
de1c301e | 2112 | |
ac8029fc | 2113 | timeout = calc_elapse(bus, m->timeout); |
de1c301e LP |
2114 | |
2115 | for (;;) { | |
2116 | usec_t left; | |
de1c301e | 2117 | |
7d22c717 LP |
2118 | while (i < bus->rqueue_size) { |
2119 | sd_bus_message *incoming = NULL; | |
2120 | ||
2121 | incoming = bus->rqueue[i]; | |
89ffcd2a | 2122 | |
693eb9a2 | 2123 | if (incoming->reply_cookie == cookie) { |
de1c301e LP |
2124 | /* Found a match! */ |
2125 | ||
7d22c717 LP |
2126 | memmove(bus->rqueue + i, bus->rqueue + i + 1, sizeof(sd_bus_message*) * (bus->rqueue_size - i - 1)); |
2127 | bus->rqueue_size--; | |
f9f97ca6 | 2128 | log_debug_bus_message(incoming); |
7d22c717 | 2129 | |
40ca29a1 | 2130 | if (incoming->header->type == SD_BUS_MESSAGE_METHOD_RETURN) { |
b7f247e0 | 2131 | |
c7db1984 | 2132 | if (incoming->n_fds <= 0 || bus->accept_fd) { |
2ce97e2b LP |
2133 | if (reply) |
2134 | *reply = incoming; | |
2135 | else | |
2136 | sd_bus_message_unref(incoming); | |
2137 | ||
2138 | return 1; | |
2139 | } | |
2140 | ||
2141 | r = sd_bus_error_setf(error, SD_BUS_ERROR_INCONSISTENT_MESSAGE, "Reply message contained file descriptors which I couldn't accept. Sorry."); | |
759e02e7 LP |
2142 | sd_bus_message_unref(incoming); |
2143 | return r; | |
b7f247e0 | 2144 | |
759e02e7 | 2145 | } else if (incoming->header->type == SD_BUS_MESSAGE_METHOD_ERROR) { |
de1c301e | 2146 | r = sd_bus_error_copy(error, &incoming->error); |
759e02e7 LP |
2147 | sd_bus_message_unref(incoming); |
2148 | return r; | |
2149 | } else { | |
a43b9ca3 | 2150 | r = -EIO; |
759e02e7 LP |
2151 | goto fail; |
2152 | } | |
a8a07f89 | 2153 | |
693eb9a2 | 2154 | } else if (BUS_MESSAGE_COOKIE(incoming) == cookie && |
a8a07f89 LP |
2155 | bus->unique_name && |
2156 | incoming->sender && | |
2157 | streq(bus->unique_name, incoming->sender)) { | |
2158 | ||
7d22c717 LP |
2159 | memmove(bus->rqueue + i, bus->rqueue + i + 1, sizeof(sd_bus_message*) * (bus->rqueue_size - i - 1)); |
2160 | bus->rqueue_size--; | |
2161 | ||
a8a07f89 LP |
2162 | /* Our own message? Somebody is trying |
2163 | * to send its own client a message, | |
2164 | * let's not dead-lock, let's fail | |
2165 | * immediately. */ | |
2166 | ||
2167 | sd_bus_message_unref(incoming); | |
759e02e7 LP |
2168 | r = -ELOOP; |
2169 | goto fail; | |
de1c301e LP |
2170 | } |
2171 | ||
de1c301e | 2172 | /* Try to read more, right-away */ |
7d22c717 | 2173 | i++; |
de1c301e | 2174 | } |
7d22c717 | 2175 | |
766c5809 | 2176 | r = bus_read_message(bus, false, 0); |
32f46480 | 2177 | if (r < 0) { |
103a5027 | 2178 | if (IN_SET(r, -ENOTCONN, -ECONNRESET, -EPIPE, -ESHUTDOWN)) { |
32f46480 | 2179 | bus_enter_closing(bus); |
759e02e7 | 2180 | r = -ECONNRESET; |
441d56a1 | 2181 | } |
32f46480 | 2182 | |
759e02e7 | 2183 | goto fail; |
32f46480 | 2184 | } |
7d22c717 | 2185 | if (r > 0) |
e3017af9 | 2186 | continue; |
de1c301e LP |
2187 | |
2188 | if (timeout > 0) { | |
2189 | usec_t n; | |
2190 | ||
2191 | n = now(CLOCK_MONOTONIC); | |
759e02e7 LP |
2192 | if (n >= timeout) { |
2193 | r = -ETIMEDOUT; | |
2194 | goto fail; | |
2195 | } | |
de1c301e LP |
2196 | |
2197 | left = timeout - n; | |
2198 | } else | |
2199 | left = (uint64_t) -1; | |
2200 | ||
e3017af9 | 2201 | r = bus_poll(bus, true, left); |
de1c301e | 2202 | if (r < 0) |
759e02e7 LP |
2203 | goto fail; |
2204 | if (r == 0) { | |
2205 | r = -ETIMEDOUT; | |
2206 | goto fail; | |
2207 | } | |
de1c301e LP |
2208 | |
2209 | r = dispatch_wqueue(bus); | |
32f46480 | 2210 | if (r < 0) { |
103a5027 | 2211 | if (IN_SET(r, -ENOTCONN, -ECONNRESET, -EPIPE, -ESHUTDOWN)) { |
32f46480 | 2212 | bus_enter_closing(bus); |
759e02e7 | 2213 | r = -ECONNRESET; |
441d56a1 | 2214 | } |
32f46480 | 2215 | |
759e02e7 | 2216 | goto fail; |
32f46480 | 2217 | } |
de1c301e | 2218 | } |
759e02e7 LP |
2219 | |
2220 | fail: | |
2221 | return sd_bus_error_set_errno(error, r); | |
de1c301e LP |
2222 | } |
2223 | ||
d9f644e2 | 2224 | _public_ int sd_bus_get_fd(sd_bus *bus) { |
d6888822 LP |
2225 | |
2226 | assert_return(bus, -EINVAL); | |
45b1f410 | 2227 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 LP |
2228 | assert_return(bus->input_fd == bus->output_fd, -EPERM); |
2229 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
de1c301e | 2230 | |
8a5cd31e LP |
2231 | if (bus->state == BUS_CLOSED) |
2232 | return -ENOTCONN; | |
2233 | ||
2234 | if (bus->inotify_fd >= 0) | |
2235 | return bus->inotify_fd; | |
2236 | ||
2237 | if (bus->input_fd >= 0) | |
2238 | return bus->input_fd; | |
2239 | ||
2240 | return -ENOTCONN; | |
de1c301e LP |
2241 | } |
2242 | ||
d9f644e2 | 2243 | _public_ int sd_bus_get_events(sd_bus *bus) { |
de1c301e LP |
2244 | int flags = 0; |
2245 | ||
d6888822 | 2246 | assert_return(bus, -EINVAL); |
45b1f410 | 2247 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 | 2248 | assert_return(!bus_pid_changed(bus), -ECHILD); |
de1c301e | 2249 | |
8a5cd31e LP |
2250 | switch (bus->state) { |
2251 | ||
2252 | case BUS_UNSET: | |
2253 | case BUS_CLOSED: | |
a3d59cd1 LP |
2254 | return -ENOTCONN; |
2255 | ||
8a5cd31e LP |
2256 | case BUS_WATCH_BIND: |
2257 | flags |= POLLIN; | |
2258 | break; | |
2259 | ||
2260 | case BUS_OPENING: | |
de1c301e | 2261 | flags |= POLLOUT; |
8a5cd31e | 2262 | break; |
89ffcd2a | 2263 | |
8a5cd31e | 2264 | case BUS_AUTHENTICATING: |
2181a7f5 | 2265 | if (bus_socket_auth_needs_write(bus)) |
89ffcd2a LP |
2266 | flags |= POLLOUT; |
2267 | ||
2268 | flags |= POLLIN; | |
8a5cd31e | 2269 | break; |
89ffcd2a | 2270 | |
8a5cd31e LP |
2271 | case BUS_RUNNING: |
2272 | case BUS_HELLO: | |
de1c301e LP |
2273 | if (bus->rqueue_size <= 0) |
2274 | flags |= POLLIN; | |
2275 | if (bus->wqueue_size > 0) | |
2276 | flags |= POLLOUT; | |
8a5cd31e LP |
2277 | break; |
2278 | ||
2279 | case BUS_CLOSING: | |
2280 | break; | |
2281 | ||
2282 | default: | |
2283 | assert_not_reached("Unknown state"); | |
de1c301e LP |
2284 | } |
2285 | ||
2286 | return flags; | |
2287 | } | |
2288 | ||
d9f644e2 | 2289 | _public_ int sd_bus_get_timeout(sd_bus *bus, uint64_t *timeout_usec) { |
e3017af9 LP |
2290 | struct reply_callback *c; |
2291 | ||
d6888822 | 2292 | assert_return(bus, -EINVAL); |
45b1f410 | 2293 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 | 2294 | assert_return(timeout_usec, -EINVAL); |
d6888822 | 2295 | assert_return(!bus_pid_changed(bus), -ECHILD); |
e3017af9 | 2296 | |
a3d59cd1 LP |
2297 | if (!BUS_IS_OPEN(bus->state) && bus->state != BUS_CLOSING) |
2298 | return -ENOTCONN; | |
2299 | ||
8f8f05a9 LP |
2300 | if (bus->track_queue) { |
2301 | *timeout_usec = 0; | |
2302 | return 1; | |
2303 | } | |
2304 | ||
8a5cd31e | 2305 | switch (bus->state) { |
718db961 | 2306 | |
8a5cd31e | 2307 | case BUS_AUTHENTICATING: |
e3017af9 LP |
2308 | *timeout_usec = bus->auth_timeout; |
2309 | return 1; | |
e3017af9 | 2310 | |
8a5cd31e LP |
2311 | case BUS_RUNNING: |
2312 | case BUS_HELLO: | |
2313 | if (bus->rqueue_size > 0) { | |
2314 | *timeout_usec = 0; | |
2315 | return 1; | |
2316 | } | |
2317 | ||
2318 | c = prioq_peek(bus->reply_callbacks_prioq); | |
2319 | if (!c) { | |
2320 | *timeout_usec = (uint64_t) -1; | |
2321 | return 0; | |
2322 | } | |
2323 | ||
ac8029fc | 2324 | if (c->timeout_usec == 0) { |
8a5cd31e LP |
2325 | *timeout_usec = (uint64_t) -1; |
2326 | return 0; | |
2327 | } | |
2328 | ||
ac8029fc | 2329 | *timeout_usec = c->timeout_usec; |
8a5cd31e | 2330 | return 1; |
e3017af9 | 2331 | |
8a5cd31e | 2332 | case BUS_CLOSING: |
8efd6381 LP |
2333 | *timeout_usec = 0; |
2334 | return 1; | |
8efd6381 | 2335 | |
8a5cd31e LP |
2336 | case BUS_WATCH_BIND: |
2337 | case BUS_OPENING: | |
adee69fa | 2338 | *timeout_usec = (uint64_t) -1; |
e3017af9 LP |
2339 | return 0; |
2340 | ||
8a5cd31e LP |
2341 | default: |
2342 | assert_not_reached("Unknown or unexpected stat"); | |
19befb2d | 2343 | } |
e3017af9 LP |
2344 | } |
2345 | ||
2346 | static int process_timeout(sd_bus *bus) { | |
4afd3348 LP |
2347 | _cleanup_(sd_bus_error_free) sd_bus_error error_buffer = SD_BUS_ERROR_NULL; |
2348 | _cleanup_(sd_bus_message_unrefp) sd_bus_message* m = NULL; | |
e3017af9 | 2349 | struct reply_callback *c; |
1b64f838 | 2350 | sd_bus_slot *slot; |
b057498a | 2351 | bool is_hello; |
e3017af9 LP |
2352 | usec_t n; |
2353 | int r; | |
2354 | ||
2355 | assert(bus); | |
ac8029fc | 2356 | assert(IN_SET(bus->state, BUS_RUNNING, BUS_HELLO)); |
e3017af9 LP |
2357 | |
2358 | c = prioq_peek(bus->reply_callbacks_prioq); | |
2359 | if (!c) | |
2360 | return 0; | |
2361 | ||
2362 | n = now(CLOCK_MONOTONIC); | |
ac8029fc | 2363 | if (c->timeout_usec > n) |
e3017af9 LP |
2364 | return 0; |
2365 | ||
eb01ba5d LP |
2366 | r = bus_message_new_synthetic_error( |
2367 | bus, | |
693eb9a2 | 2368 | c->cookie, |
14c24659 | 2369 | &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_NO_REPLY, "Method call timed out"), |
eb01ba5d LP |
2370 | &m); |
2371 | if (r < 0) | |
2372 | return r; | |
2373 | ||
7adc46fc | 2374 | r = bus_seal_synthetic_message(bus, m); |
718db961 LP |
2375 | if (r < 0) |
2376 | return r; | |
2377 | ||
e3017af9 | 2378 | assert_se(prioq_pop(bus->reply_callbacks_prioq) == c); |
ac8029fc | 2379 | c->timeout_usec = 0; |
19befb2d | 2380 | |
c9fe4af7 | 2381 | ordered_hashmap_remove(bus->reply_callbacks, &c->cookie); |
19befb2d LP |
2382 | c->cookie = 0; |
2383 | ||
1b64f838 | 2384 | slot = container_of(c, sd_bus_slot, reply_callback); |
e3017af9 | 2385 | |
313cefa1 | 2386 | bus->iteration_counter++; |
718db961 | 2387 | |
b057498a LP |
2388 | is_hello = bus->state == BUS_HELLO && c->callback == hello_callback; |
2389 | ||
1b64f838 LP |
2390 | bus->current_message = m; |
2391 | bus->current_slot = sd_bus_slot_ref(slot); | |
caa82984 LP |
2392 | bus->current_handler = c->callback; |
2393 | bus->current_userdata = slot->userdata; | |
19070062 | 2394 | r = c->callback(m, slot->userdata, &error_buffer); |
caa82984 LP |
2395 | bus->current_userdata = NULL; |
2396 | bus->current_handler = NULL; | |
d974ad05 | 2397 | bus->current_slot = NULL; |
19befb2d | 2398 | bus->current_message = NULL; |
718db961 | 2399 | |
2e7e8e34 YW |
2400 | if (slot->floating) |
2401 | bus_slot_disconnect(slot, true); | |
1b64f838 | 2402 | |
d974ad05 DH |
2403 | sd_bus_slot_unref(slot); |
2404 | ||
8a5cd31e LP |
2405 | /* When this is the hello message and it timed out, then make sure to propagate the error up, don't just log |
2406 | * and ignore the callback handler's return value. */ | |
b057498a LP |
2407 | if (is_hello) |
2408 | return r; | |
2409 | ||
1b64f838 | 2410 | return bus_maybe_reply_error(m, r, &error_buffer); |
e3017af9 LP |
2411 | } |
2412 | ||
9d373862 LP |
2413 | static int process_hello(sd_bus *bus, sd_bus_message *m) { |
2414 | assert(bus); | |
2415 | assert(m); | |
2416 | ||
2417 | if (bus->state != BUS_HELLO) | |
2418 | return 0; | |
2419 | ||
2420 | /* Let's make sure the first message on the bus is the HELLO | |
2421 | * reply. But note that we don't actually parse the message | |
2181a7f5 LP |
2422 | * here (we leave that to the usual handling), we just verify |
2423 | * we don't let any earlier msg through. */ | |
9d373862 | 2424 | |
945c2931 | 2425 | if (!IN_SET(m->header->type, SD_BUS_MESSAGE_METHOD_RETURN, SD_BUS_MESSAGE_METHOD_ERROR)) |
9d373862 LP |
2426 | return -EIO; |
2427 | ||
19befb2d | 2428 | if (m->reply_cookie != 1) |
9d373862 LP |
2429 | return -EIO; |
2430 | ||
2431 | return 0; | |
2432 | } | |
2433 | ||
a652755d | 2434 | static int process_reply(sd_bus *bus, sd_bus_message *m) { |
4afd3348 LP |
2435 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *synthetic_reply = NULL; |
2436 | _cleanup_(sd_bus_error_free) sd_bus_error error_buffer = SD_BUS_ERROR_NULL; | |
19befb2d | 2437 | struct reply_callback *c; |
1b64f838 | 2438 | sd_bus_slot *slot; |
b057498a | 2439 | bool is_hello; |
a652755d LP |
2440 | int r; |
2441 | ||
2442 | assert(bus); | |
2443 | assert(m); | |
2444 | ||
945c2931 | 2445 | if (!IN_SET(m->header->type, SD_BUS_MESSAGE_METHOD_RETURN, SD_BUS_MESSAGE_METHOD_ERROR)) |
a652755d LP |
2446 | return 0; |
2447 | ||
09365592 LP |
2448 | if (m->destination && bus->unique_name && !streq_ptr(m->destination, bus->unique_name)) |
2449 | return 0; | |
2450 | ||
c9fe4af7 | 2451 | c = ordered_hashmap_remove(bus->reply_callbacks, &m->reply_cookie); |
a652755d LP |
2452 | if (!c) |
2453 | return 0; | |
2454 | ||
19befb2d | 2455 | c->cookie = 0; |
19befb2d | 2456 | |
1b64f838 | 2457 | slot = container_of(c, sd_bus_slot, reply_callback); |
a652755d | 2458 | |
c7db1984 | 2459 | if (m->n_fds > 0 && !bus->accept_fd) { |
2ce97e2b LP |
2460 | |
2461 | /* If the reply contained a file descriptor which we | |
2462 | * didn't want we pass an error instead. */ | |
2463 | ||
2464 | r = bus_message_new_synthetic_error( | |
2465 | bus, | |
2466 | m->reply_cookie, | |
2467 | &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_INCONSISTENT_MESSAGE, "Reply message contained file descriptor"), | |
2468 | &synthetic_reply); | |
2469 | if (r < 0) | |
1b64f838 | 2470 | return r; |
2ce97e2b | 2471 | |
52cd5877 LP |
2472 | /* Copy over original timestamp */ |
2473 | synthetic_reply->realtime = m->realtime; | |
2474 | synthetic_reply->monotonic = m->monotonic; | |
2475 | synthetic_reply->seqnum = m->seqnum; | |
2476 | ||
2ce97e2b LP |
2477 | r = bus_seal_synthetic_message(bus, synthetic_reply); |
2478 | if (r < 0) | |
1b64f838 | 2479 | return r; |
2ce97e2b LP |
2480 | |
2481 | m = synthetic_reply; | |
2482 | } else { | |
2483 | r = sd_bus_message_rewind(m, true); | |
2484 | if (r < 0) | |
1b64f838 | 2485 | return r; |
2ce97e2b | 2486 | } |
88fe224c | 2487 | |
ac8029fc | 2488 | if (c->timeout_usec != 0) { |
1b64f838 | 2489 | prioq_remove(bus->reply_callbacks_prioq, c, &c->prioq_idx); |
ac8029fc | 2490 | c->timeout_usec = 0; |
1b64f838 | 2491 | } |
19befb2d | 2492 | |
b057498a LP |
2493 | is_hello = bus->state == BUS_HELLO && c->callback == hello_callback; |
2494 | ||
1b64f838 | 2495 | bus->current_slot = sd_bus_slot_ref(slot); |
caa82984 LP |
2496 | bus->current_handler = c->callback; |
2497 | bus->current_userdata = slot->userdata; | |
19070062 | 2498 | r = c->callback(m, slot->userdata, &error_buffer); |
caa82984 LP |
2499 | bus->current_userdata = NULL; |
2500 | bus->current_handler = NULL; | |
d974ad05 | 2501 | bus->current_slot = NULL; |
a652755d | 2502 | |
2e7e8e34 YW |
2503 | if (slot->floating) |
2504 | bus_slot_disconnect(slot, true); | |
19befb2d | 2505 | |
d974ad05 DH |
2506 | sd_bus_slot_unref(slot); |
2507 | ||
8a5cd31e LP |
2508 | /* When this is the hello message and it failed, then make sure to propagate the error up, don't just log and |
2509 | * ignore the callback handler's return value. */ | |
b057498a LP |
2510 | if (is_hello) |
2511 | return r; | |
2512 | ||
1b64f838 | 2513 | return bus_maybe_reply_error(m, r, &error_buffer); |
a652755d LP |
2514 | } |
2515 | ||
2516 | static int process_filter(sd_bus *bus, sd_bus_message *m) { | |
4afd3348 | 2517 | _cleanup_(sd_bus_error_free) sd_bus_error error_buffer = SD_BUS_ERROR_NULL; |
a652755d LP |
2518 | struct filter_callback *l; |
2519 | int r; | |
2520 | ||
392d5b37 LP |
2521 | assert(bus); |
2522 | assert(m); | |
2523 | ||
7286037f LP |
2524 | do { |
2525 | bus->filter_callbacks_modified = false; | |
2526 | ||
2527 | LIST_FOREACH(callbacks, l, bus->filter_callbacks) { | |
1b64f838 | 2528 | sd_bus_slot *slot; |
7286037f LP |
2529 | |
2530 | if (bus->filter_callbacks_modified) | |
2531 | break; | |
2532 | ||
2533 | /* Don't run this more than once per iteration */ | |
2534 | if (l->last_iteration == bus->iteration_counter) | |
2535 | continue; | |
2536 | ||
2537 | l->last_iteration = bus->iteration_counter; | |
2538 | ||
88fe224c LP |
2539 | r = sd_bus_message_rewind(m, true); |
2540 | if (r < 0) | |
2541 | return r; | |
2542 | ||
1b64f838 LP |
2543 | slot = container_of(l, sd_bus_slot, filter_callback); |
2544 | ||
2545 | bus->current_slot = sd_bus_slot_ref(slot); | |
caa82984 LP |
2546 | bus->current_handler = l->callback; |
2547 | bus->current_userdata = slot->userdata; | |
19070062 | 2548 | r = l->callback(m, slot->userdata, &error_buffer); |
caa82984 LP |
2549 | bus->current_userdata = NULL; |
2550 | bus->current_handler = NULL; | |
1b64f838 | 2551 | bus->current_slot = sd_bus_slot_unref(slot); |
19befb2d | 2552 | |
ebcf1f97 | 2553 | r = bus_maybe_reply_error(m, r, &error_buffer); |
7286037f LP |
2554 | if (r != 0) |
2555 | return r; | |
2556 | ||
2557 | } | |
2558 | ||
2559 | } while (bus->filter_callbacks_modified); | |
a652755d LP |
2560 | |
2561 | return 0; | |
2562 | } | |
2563 | ||
392d5b37 | 2564 | static int process_match(sd_bus *bus, sd_bus_message *m) { |
7286037f LP |
2565 | int r; |
2566 | ||
392d5b37 LP |
2567 | assert(bus); |
2568 | assert(m); | |
2569 | ||
7286037f LP |
2570 | do { |
2571 | bus->match_callbacks_modified = false; | |
2572 | ||
eb01ba5d | 2573 | r = bus_match_run(bus, &bus->match_callbacks, m); |
7286037f LP |
2574 | if (r != 0) |
2575 | return r; | |
2576 | ||
2577 | } while (bus->match_callbacks_modified); | |
2578 | ||
2579 | return 0; | |
392d5b37 LP |
2580 | } |
2581 | ||
b9bf7e2b | 2582 | static int process_builtin(sd_bus *bus, sd_bus_message *m) { |
4afd3348 | 2583 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; |
b9bf7e2b LP |
2584 | int r; |
2585 | ||
2586 | assert(bus); | |
2587 | assert(m); | |
2588 | ||
c7db1984 | 2589 | if (bus->is_monitor) |
09365592 LP |
2590 | return 0; |
2591 | ||
758bf0c7 LP |
2592 | if (bus->manual_peer_interface) |
2593 | return 0; | |
2594 | ||
40ca29a1 | 2595 | if (m->header->type != SD_BUS_MESSAGE_METHOD_CALL) |
b9bf7e2b LP |
2596 | return 0; |
2597 | ||
2598 | if (!streq_ptr(m->interface, "org.freedesktop.DBus.Peer")) | |
2599 | return 0; | |
2600 | ||
0461f8cd | 2601 | if (m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED) |
b9bf7e2b LP |
2602 | return 1; |
2603 | ||
2604 | if (streq_ptr(m->member, "Ping")) | |
df2d202e | 2605 | r = sd_bus_message_new_method_return(m, &reply); |
b9bf7e2b LP |
2606 | else if (streq_ptr(m->member, "GetMachineId")) { |
2607 | sd_id128_t id; | |
2608 | char sid[33]; | |
2609 | ||
2610 | r = sd_id128_get_machine(&id); | |
2611 | if (r < 0) | |
2612 | return r; | |
2613 | ||
df2d202e | 2614 | r = sd_bus_message_new_method_return(m, &reply); |
b9bf7e2b LP |
2615 | if (r < 0) |
2616 | return r; | |
2617 | ||
2618 | r = sd_bus_message_append(reply, "s", sd_id128_to_string(id, sid)); | |
2619 | } else { | |
29ddb38f | 2620 | r = sd_bus_message_new_method_errorf( |
df2d202e | 2621 | m, &reply, |
40ca29a1 | 2622 | SD_BUS_ERROR_UNKNOWN_METHOD, |
b9bf7e2b | 2623 | "Unknown method '%s' on interface '%s'.", m->member, m->interface); |
b9bf7e2b LP |
2624 | } |
2625 | ||
2626 | if (r < 0) | |
2627 | return r; | |
2628 | ||
2629 | r = sd_bus_send(bus, reply, NULL); | |
2630 | if (r < 0) | |
2631 | return r; | |
2632 | ||
2633 | return 1; | |
2634 | } | |
2635 | ||
2ce97e2b LP |
2636 | static int process_fd_check(sd_bus *bus, sd_bus_message *m) { |
2637 | assert(bus); | |
2638 | assert(m); | |
2639 | ||
2640 | /* If we got a message with a file descriptor which we didn't | |
2641 | * want to accept, then let's drop it. How can this even | |
2642 | * happen? For example, when the kernel queues a message into | |
2643 | * an activatable names's queue which allows fds, and then is | |
2644 | * delivered to us later even though we ourselves did not | |
2645 | * negotiate it. */ | |
2646 | ||
c7db1984 | 2647 | if (bus->is_monitor) |
09365592 LP |
2648 | return 0; |
2649 | ||
2ce97e2b LP |
2650 | if (m->n_fds <= 0) |
2651 | return 0; | |
2652 | ||
c7db1984 | 2653 | if (bus->accept_fd) |
2ce97e2b LP |
2654 | return 0; |
2655 | ||
2656 | if (m->header->type != SD_BUS_MESSAGE_METHOD_CALL) | |
2657 | return 1; /* just eat it up */ | |
2658 | ||
2659 | return sd_bus_reply_method_errorf(m, SD_BUS_ERROR_INCONSISTENT_MESSAGE, "Message contains file descriptors, which I cannot accept. Sorry."); | |
2660 | } | |
2661 | ||
992c052c | 2662 | static int process_message(sd_bus *bus, sd_bus_message *m) { |
e3017af9 LP |
2663 | int r; |
2664 | ||
2665 | assert(bus); | |
992c052c | 2666 | assert(m); |
e3017af9 | 2667 | |
19befb2d | 2668 | bus->current_message = m; |
992c052c | 2669 | bus->iteration_counter++; |
e3017af9 | 2670 | |
f9f97ca6 | 2671 | log_debug_bus_message(m); |
40ca29a1 | 2672 | |
992c052c LP |
2673 | r = process_hello(bus, m); |
2674 | if (r != 0) | |
affff0b6 | 2675 | goto finish; |
a652755d | 2676 | |
992c052c LP |
2677 | r = process_reply(bus, m); |
2678 | if (r != 0) | |
affff0b6 | 2679 | goto finish; |
e3017af9 | 2680 | |
2ce97e2b LP |
2681 | r = process_fd_check(bus, m); |
2682 | if (r != 0) | |
2683 | goto finish; | |
2684 | ||
992c052c LP |
2685 | r = process_filter(bus, m); |
2686 | if (r != 0) | |
affff0b6 | 2687 | goto finish; |
a652755d | 2688 | |
992c052c LP |
2689 | r = process_match(bus, m); |
2690 | if (r != 0) | |
affff0b6 | 2691 | goto finish; |
a652755d | 2692 | |
992c052c LP |
2693 | r = process_builtin(bus, m); |
2694 | if (r != 0) | |
affff0b6 LP |
2695 | goto finish; |
2696 | ||
2697 | r = bus_process_object(bus, m); | |
a652755d | 2698 | |
affff0b6 | 2699 | finish: |
19befb2d | 2700 | bus->current_message = NULL; |
affff0b6 | 2701 | return r; |
29ddb38f | 2702 | } |
88fe224c | 2703 | |
8f8f05a9 LP |
2704 | static int dispatch_track(sd_bus *bus) { |
2705 | assert(bus); | |
2706 | ||
2707 | if (!bus->track_queue) | |
2708 | return 0; | |
2709 | ||
2710 | bus_track_dispatch(bus->track_queue); | |
2711 | return 1; | |
2712 | } | |
2713 | ||
766c5809 | 2714 | static int process_running(sd_bus *bus, bool hint_priority, int64_t priority, sd_bus_message **ret) { |
4afd3348 | 2715 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; |
29ddb38f | 2716 | int r; |
a652755d | 2717 | |
29ddb38f | 2718 | assert(bus); |
945c2931 | 2719 | assert(IN_SET(bus->state, BUS_RUNNING, BUS_HELLO)); |
7286037f | 2720 | |
992c052c LP |
2721 | r = process_timeout(bus); |
2722 | if (r != 0) | |
2723 | goto null_message; | |
7286037f | 2724 | |
992c052c LP |
2725 | r = dispatch_wqueue(bus); |
2726 | if (r != 0) | |
2727 | goto null_message; | |
7286037f | 2728 | |
8f8f05a9 LP |
2729 | r = dispatch_track(bus); |
2730 | if (r != 0) | |
2731 | goto null_message; | |
2732 | ||
766c5809 | 2733 | r = dispatch_rqueue(bus, hint_priority, priority, &m); |
992c052c LP |
2734 | if (r < 0) |
2735 | return r; | |
2736 | if (!m) | |
2737 | goto null_message; | |
7286037f | 2738 | |
992c052c LP |
2739 | r = process_message(bus, m); |
2740 | if (r != 0) | |
2741 | goto null_message; | |
7286037f | 2742 | |
992c052c LP |
2743 | if (ret) { |
2744 | r = sd_bus_message_rewind(m, true); | |
29ddb38f LP |
2745 | if (r < 0) |
2746 | return r; | |
e3017af9 | 2747 | |
1cc6c93a YW |
2748 | *ret = TAKE_PTR(m); |
2749 | ||
992c052c LP |
2750 | return 1; |
2751 | } | |
a652755d | 2752 | |
40ca29a1 | 2753 | if (m->header->type == SD_BUS_MESSAGE_METHOD_CALL) { |
a652755d | 2754 | |
dc74ce9b LP |
2755 | log_debug("Unprocessed message call sender=%s object=%s interface=%s member=%s", |
2756 | strna(sd_bus_message_get_sender(m)), | |
2757 | strna(sd_bus_message_get_path(m)), | |
2758 | strna(sd_bus_message_get_interface(m)), | |
2759 | strna(sd_bus_message_get_member(m))); | |
2760 | ||
992c052c | 2761 | r = sd_bus_reply_method_errorf( |
df2d202e | 2762 | m, |
40ca29a1 | 2763 | SD_BUS_ERROR_UNKNOWN_OBJECT, |
992c052c | 2764 | "Unknown object '%s'.", m->path); |
29ddb38f LP |
2765 | if (r < 0) |
2766 | return r; | |
2767 | } | |
e3017af9 | 2768 | |
992c052c | 2769 | return 1; |
0a72c2bd | 2770 | |
992c052c LP |
2771 | null_message: |
2772 | if (r >= 0 && ret) | |
2773 | *ret = NULL; | |
0a72c2bd | 2774 | |
992c052c | 2775 | return r; |
29ddb38f | 2776 | } |
0a72c2bd | 2777 | |
fbb4603d LP |
2778 | static int bus_exit_now(sd_bus *bus) { |
2779 | assert(bus); | |
2780 | ||
2781 | /* Exit due to close, if this is requested. If this is bus object is attached to an event source, invokes | |
2782 | * sd_event_exit(), otherwise invokes libc exit(). */ | |
2783 | ||
2784 | if (bus->exited) /* did we already exit? */ | |
2785 | return 0; | |
2786 | if (!bus->exit_triggered) /* was the exit condition triggered? */ | |
2787 | return 0; | |
2788 | if (!bus->exit_on_disconnect) /* Shall we actually exit on disconnection? */ | |
2789 | return 0; | |
2790 | ||
2791 | bus->exited = true; /* never exit more than once */ | |
2792 | ||
2793 | log_debug("Bus connection disconnected, exiting."); | |
2794 | ||
2795 | if (bus->event) | |
2796 | return sd_event_exit(bus->event, EXIT_FAILURE); | |
2797 | else | |
2798 | exit(EXIT_FAILURE); | |
2799 | ||
2800 | assert_not_reached("exit() didn't exit?"); | |
2801 | } | |
2802 | ||
217fcc7e LP |
2803 | static int process_closing_reply_callback(sd_bus *bus, struct reply_callback *c) { |
2804 | _cleanup_(sd_bus_error_free) sd_bus_error error_buffer = SD_BUS_ERROR_NULL; | |
4afd3348 | 2805 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; |
217fcc7e | 2806 | sd_bus_slot *slot; |
718db961 LP |
2807 | int r; |
2808 | ||
2809 | assert(bus); | |
217fcc7e | 2810 | assert(c); |
718db961 | 2811 | |
217fcc7e LP |
2812 | r = bus_message_new_synthetic_error( |
2813 | bus, | |
2814 | c->cookie, | |
2815 | &SD_BUS_ERROR_MAKE_CONST(SD_BUS_ERROR_NO_REPLY, "Connection terminated"), | |
2816 | &m); | |
2817 | if (r < 0) | |
2818 | return r; | |
ebcf1f97 | 2819 | |
217fcc7e LP |
2820 | r = bus_seal_synthetic_message(bus, m); |
2821 | if (r < 0) | |
2822 | return r; | |
718db961 | 2823 | |
ac8029fc | 2824 | if (c->timeout_usec != 0) { |
217fcc7e | 2825 | prioq_remove(bus->reply_callbacks_prioq, c, &c->prioq_idx); |
ac8029fc | 2826 | c->timeout_usec = 0; |
217fcc7e | 2827 | } |
718db961 | 2828 | |
217fcc7e LP |
2829 | ordered_hashmap_remove(bus->reply_callbacks, &c->cookie); |
2830 | c->cookie = 0; | |
2831 | ||
2832 | slot = container_of(c, sd_bus_slot, reply_callback); | |
718db961 | 2833 | |
217fcc7e | 2834 | bus->iteration_counter++; |
19befb2d | 2835 | |
217fcc7e LP |
2836 | bus->current_message = m; |
2837 | bus->current_slot = sd_bus_slot_ref(slot); | |
2838 | bus->current_handler = c->callback; | |
2839 | bus->current_userdata = slot->userdata; | |
2840 | r = c->callback(m, slot->userdata, &error_buffer); | |
2841 | bus->current_userdata = NULL; | |
2842 | bus->current_handler = NULL; | |
2843 | bus->current_slot = NULL; | |
2844 | bus->current_message = NULL; | |
718db961 | 2845 | |
2e7e8e34 YW |
2846 | if (slot->floating) |
2847 | bus_slot_disconnect(slot, true); | |
718db961 | 2848 | |
217fcc7e | 2849 | sd_bus_slot_unref(slot); |
1b64f838 | 2850 | |
217fcc7e LP |
2851 | return bus_maybe_reply_error(m, r, &error_buffer); |
2852 | } | |
718db961 | 2853 | |
217fcc7e LP |
2854 | static int process_closing(sd_bus *bus, sd_bus_message **ret) { |
2855 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; | |
2856 | struct reply_callback *c; | |
2857 | int r; | |
d974ad05 | 2858 | |
217fcc7e LP |
2859 | assert(bus); |
2860 | assert(bus->state == BUS_CLOSING); | |
2861 | ||
2862 | /* First, fail all outstanding method calls */ | |
2863 | c = ordered_hashmap_first(bus->reply_callbacks); | |
2864 | if (c) | |
2865 | return process_closing_reply_callback(bus, c); | |
718db961 | 2866 | |
232f3677 LP |
2867 | /* Then, fake-drop all remaining bus tracking references */ |
2868 | if (bus->tracks) { | |
2869 | bus_track_close(bus->tracks); | |
2870 | return 1; | |
2871 | } | |
2872 | ||
718db961 LP |
2873 | /* Then, synthesize a Disconnected message */ |
2874 | r = sd_bus_message_new_signal( | |
2875 | bus, | |
151b9b96 | 2876 | &m, |
718db961 LP |
2877 | "/org/freedesktop/DBus/Local", |
2878 | "org.freedesktop.DBus.Local", | |
151b9b96 | 2879 | "Disconnected"); |
718db961 LP |
2880 | if (r < 0) |
2881 | return r; | |
2882 | ||
fb6d9b77 | 2883 | bus_message_set_sender_local(bus, m); |
34a2c9e8 | 2884 | |
7adc46fc | 2885 | r = bus_seal_synthetic_message(bus, m); |
718db961 LP |
2886 | if (r < 0) |
2887 | return r; | |
2888 | ||
2889 | sd_bus_close(bus); | |
2890 | ||
19befb2d | 2891 | bus->current_message = m; |
718db961 LP |
2892 | bus->iteration_counter++; |
2893 | ||
2894 | r = process_filter(bus, m); | |
2895 | if (r != 0) | |
2896 | goto finish; | |
2897 | ||
2898 | r = process_match(bus, m); | |
2899 | if (r != 0) | |
2900 | goto finish; | |
2901 | ||
fbb4603d LP |
2902 | /* Nothing else to do, exit now, if the condition holds */ |
2903 | bus->exit_triggered = true; | |
2904 | (void) bus_exit_now(bus); | |
2905 | ||
1cc6c93a YW |
2906 | if (ret) |
2907 | *ret = TAKE_PTR(m); | |
718db961 LP |
2908 | |
2909 | r = 1; | |
2910 | ||
2911 | finish: | |
19befb2d LP |
2912 | bus->current_message = NULL; |
2913 | ||
718db961 LP |
2914 | return r; |
2915 | } | |
2916 | ||
766c5809 | 2917 | static int bus_process_internal(sd_bus *bus, bool hint_priority, int64_t priority, sd_bus_message **ret) { |
29ddb38f | 2918 | int r; |
0a72c2bd | 2919 | |
992c052c LP |
2920 | /* Returns 0 when we didn't do anything. This should cause the |
2921 | * caller to invoke sd_bus_wait() before returning the next | |
2922 | * time. Returns > 0 when we did something, which possibly | |
2923 | * means *ret is filled in with an unprocessed message. */ | |
0a72c2bd | 2924 | |
d6888822 | 2925 | assert_return(bus, -EINVAL); |
45b1f410 | 2926 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 | 2927 | assert_return(!bus_pid_changed(bus), -ECHILD); |
0a72c2bd | 2928 | |
992c052c | 2929 | /* We don't allow recursively invoking sd_bus_process(). */ |
19befb2d | 2930 | assert_return(!bus->current_message, -EBUSY); |
6d77a30c | 2931 | assert(!bus->current_slot); /* This should be NULL whenever bus->current_message is */ |
0a72c2bd | 2932 | |
7ae8edcd ZJS |
2933 | BUS_DONT_DESTROY(bus); |
2934 | ||
992c052c | 2935 | switch (bus->state) { |
0a72c2bd | 2936 | |
992c052c | 2937 | case BUS_UNSET: |
992c052c | 2938 | return -ENOTCONN; |
0a72c2bd | 2939 | |
6d6f4904 LP |
2940 | case BUS_CLOSED: |
2941 | return -ECONNRESET; | |
2942 | ||
8a5cd31e LP |
2943 | case BUS_WATCH_BIND: |
2944 | r = bus_socket_process_watch_bind(bus); | |
2945 | break; | |
2946 | ||
992c052c LP |
2947 | case BUS_OPENING: |
2948 | r = bus_socket_process_opening(bus); | |
8a5cd31e | 2949 | break; |
a652755d | 2950 | |
992c052c | 2951 | case BUS_AUTHENTICATING: |
992c052c | 2952 | r = bus_socket_process_authenticating(bus); |
8a5cd31e | 2953 | break; |
a652755d | 2954 | |
992c052c LP |
2955 | case BUS_RUNNING: |
2956 | case BUS_HELLO: | |
766c5809 | 2957 | r = process_running(bus, hint_priority, priority, ret); |
8a5cd31e LP |
2958 | if (r >= 0) |
2959 | return r; | |
718db961 | 2960 | |
8a5cd31e LP |
2961 | /* This branch initializes *ret, hence we don't use the generic error checking below */ |
2962 | break; | |
718db961 LP |
2963 | |
2964 | case BUS_CLOSING: | |
2965 | return process_closing(bus, ret); | |
8a5cd31e LP |
2966 | |
2967 | default: | |
2968 | assert_not_reached("Unknown state"); | |
992c052c | 2969 | } |
43a43f50 | 2970 | |
8a5cd31e LP |
2971 | if (IN_SET(r, -ENOTCONN, -ECONNRESET, -EPIPE, -ESHUTDOWN)) { |
2972 | bus_enter_closing(bus); | |
2973 | r = 1; | |
2974 | } else if (r < 0) | |
2975 | return r; | |
2976 | ||
2977 | if (ret) | |
2978 | *ret = NULL; | |
2979 | ||
2980 | return r; | |
e3017af9 LP |
2981 | } |
2982 | ||
766c5809 LP |
2983 | _public_ int sd_bus_process(sd_bus *bus, sd_bus_message **ret) { |
2984 | return bus_process_internal(bus, false, 0, ret); | |
2985 | } | |
2986 | ||
2987 | _public_ int sd_bus_process_priority(sd_bus *bus, int64_t priority, sd_bus_message **ret) { | |
2988 | return bus_process_internal(bus, true, priority, ret); | |
2989 | } | |
2990 | ||
992c052c LP |
2991 | static int bus_poll(sd_bus *bus, bool need_more, uint64_t timeout_usec) { |
2992 | struct pollfd p[2] = {}; | |
8a5cd31e | 2993 | int r, n; |
992c052c | 2994 | struct timespec ts; |
3a43da28 | 2995 | usec_t m = USEC_INFINITY; |
adcdb374 LP |
2996 | |
2997 | assert(bus); | |
718db961 LP |
2998 | |
2999 | if (bus->state == BUS_CLOSING) | |
3000 | return 1; | |
3001 | ||
a3d59cd1 LP |
3002 | if (!BUS_IS_OPEN(bus->state)) |
3003 | return -ENOTCONN; | |
adcdb374 | 3004 | |
8a5cd31e LP |
3005 | if (bus->state == BUS_WATCH_BIND) { |
3006 | assert(bus->inotify_fd >= 0); | |
adcdb374 | 3007 | |
8a5cd31e LP |
3008 | p[0].events = POLLIN; |
3009 | p[0].fd = bus->inotify_fd; | |
992c052c LP |
3010 | n = 1; |
3011 | } else { | |
8a5cd31e LP |
3012 | int e; |
3013 | ||
3014 | e = sd_bus_get_events(bus); | |
3015 | if (e < 0) | |
3016 | return e; | |
3017 | ||
3018 | if (need_more) | |
3019 | /* The caller really needs some more data, he doesn't | |
3020 | * care about what's already read, or any timeouts | |
3021 | * except its own. */ | |
3022 | e |= POLLIN; | |
3023 | else { | |
3024 | usec_t until; | |
3025 | /* The caller wants to process if there's something to | |
3026 | * process, but doesn't care otherwise */ | |
3027 | ||
3028 | r = sd_bus_get_timeout(bus, &until); | |
3029 | if (r < 0) | |
3030 | return r; | |
3031 | if (r > 0) | |
3032 | m = usec_sub_unsigned(until, now(CLOCK_MONOTONIC)); | |
3033 | } | |
3034 | ||
3035 | p[0].fd = bus->input_fd; | |
3036 | if (bus->output_fd == bus->input_fd) { | |
3037 | p[0].events = e; | |
3038 | n = 1; | |
3039 | } else { | |
3040 | p[0].events = e & POLLIN; | |
3041 | p[1].fd = bus->output_fd; | |
3042 | p[1].events = e & POLLOUT; | |
3043 | n = 2; | |
3044 | } | |
adcdb374 LP |
3045 | } |
3046 | ||
8a5cd31e LP |
3047 | if (timeout_usec != (uint64_t) -1 && (m == USEC_INFINITY || timeout_usec < m)) |
3048 | m = timeout_usec; | |
3049 | ||
3050 | r = ppoll(p, n, m == USEC_INFINITY ? NULL : timespec_store(&ts, m), NULL); | |
adcdb374 | 3051 | if (r < 0) |
992c052c | 3052 | return -errno; |
adcdb374 | 3053 | |
992c052c | 3054 | return r > 0 ? 1 : 0; |
adcdb374 LP |
3055 | } |
3056 | ||
d9f644e2 | 3057 | _public_ int sd_bus_wait(sd_bus *bus, uint64_t timeout_usec) { |
9db76355 | 3058 | |
d6888822 | 3059 | assert_return(bus, -EINVAL); |
45b1f410 | 3060 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 | 3061 | assert_return(!bus_pid_changed(bus), -ECHILD); |
9db76355 | 3062 | |
718db961 LP |
3063 | if (bus->state == BUS_CLOSING) |
3064 | return 0; | |
3065 | ||
a3d59cd1 LP |
3066 | if (!BUS_IS_OPEN(bus->state)) |
3067 | return -ENOTCONN; | |
718db961 | 3068 | |
992c052c LP |
3069 | if (bus->rqueue_size > 0) |
3070 | return 0; | |
9db76355 | 3071 | |
992c052c LP |
3072 | return bus_poll(bus, false, timeout_usec); |
3073 | } | |
9db76355 | 3074 | |
d9f644e2 | 3075 | _public_ int sd_bus_flush(sd_bus *bus) { |
992c052c | 3076 | int r; |
9db76355 | 3077 | |
d6888822 | 3078 | assert_return(bus, -EINVAL); |
45b1f410 | 3079 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 | 3080 | assert_return(!bus_pid_changed(bus), -ECHILD); |
9db76355 | 3081 | |
718db961 LP |
3082 | if (bus->state == BUS_CLOSING) |
3083 | return 0; | |
3084 | ||
a3d59cd1 LP |
3085 | if (!BUS_IS_OPEN(bus->state)) |
3086 | return -ENOTCONN; | |
718db961 | 3087 | |
8a5cd31e LP |
3088 | /* We never were connected? Don't hang in inotify for good, as there's no timeout set for it */ |
3089 | if (bus->state == BUS_WATCH_BIND) | |
3090 | return -EUNATCH; | |
3091 | ||
992c052c LP |
3092 | r = bus_ensure_running(bus); |
3093 | if (r < 0) | |
3094 | return r; | |
9db76355 | 3095 | |
992c052c LP |
3096 | if (bus->wqueue_size <= 0) |
3097 | return 0; | |
9db76355 | 3098 | |
992c052c LP |
3099 | for (;;) { |
3100 | r = dispatch_wqueue(bus); | |
32f46480 | 3101 | if (r < 0) { |
103a5027 | 3102 | if (IN_SET(r, -ENOTCONN, -ECONNRESET, -EPIPE, -ESHUTDOWN)) { |
32f46480 | 3103 | bus_enter_closing(bus); |
441d56a1 LP |
3104 | return -ECONNRESET; |
3105 | } | |
32f46480 | 3106 | |
9db76355 | 3107 | return r; |
32f46480 | 3108 | } |
9db76355 | 3109 | |
992c052c LP |
3110 | if (bus->wqueue_size <= 0) |
3111 | return 0; | |
9db76355 | 3112 | |
992c052c | 3113 | r = bus_poll(bus, false, (uint64_t) -1); |
9db76355 LP |
3114 | if (r < 0) |
3115 | return r; | |
9db76355 | 3116 | } |
9db76355 LP |
3117 | } |
3118 | ||
19befb2d LP |
3119 | _public_ int sd_bus_add_filter( |
3120 | sd_bus *bus, | |
3121 | sd_bus_slot **slot, | |
3122 | sd_bus_message_handler_t callback, | |
3123 | void *userdata) { | |
d9f644e2 | 3124 | |
19befb2d | 3125 | sd_bus_slot *s; |
de1c301e | 3126 | |
d6888822 | 3127 | assert_return(bus, -EINVAL); |
45b1f410 | 3128 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 LP |
3129 | assert_return(callback, -EINVAL); |
3130 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
de1c301e | 3131 | |
19befb2d LP |
3132 | s = bus_slot_allocate(bus, !slot, BUS_FILTER_CALLBACK, sizeof(struct filter_callback), userdata); |
3133 | if (!s) | |
29ddb38f LP |
3134 | return -ENOMEM; |
3135 | ||
19befb2d | 3136 | s->filter_callback.callback = callback; |
a652755d | 3137 | |
19befb2d LP |
3138 | bus->filter_callbacks_modified = true; |
3139 | LIST_PREPEND(callbacks, bus->filter_callbacks, &s->filter_callback); | |
a652755d | 3140 | |
19befb2d LP |
3141 | if (slot) |
3142 | *slot = s; | |
29ddb38f | 3143 | |
992c052c | 3144 | return 0; |
a652755d | 3145 | } |
392d5b37 | 3146 | |
7593c7a4 LP |
3147 | static int add_match_callback( |
3148 | sd_bus_message *m, | |
3149 | void *userdata, | |
3150 | sd_bus_error *ret_error) { | |
3151 | ||
3152 | sd_bus_slot *match_slot = userdata; | |
3153 | bool failed = false; | |
3154 | int r; | |
3155 | ||
3156 | assert(m); | |
3157 | assert(match_slot); | |
3158 | ||
3159 | sd_bus_slot_ref(match_slot); | |
3160 | ||
3161 | if (sd_bus_message_is_method_error(m, NULL)) { | |
3162 | log_debug_errno(sd_bus_message_get_errno(m), | |
3163 | "Unable to add match %s, failing connection: %s", | |
3164 | match_slot->match_callback.match_string, | |
3165 | sd_bus_message_get_error(m)->message); | |
3166 | ||
3167 | failed = true; | |
3168 | } else | |
3169 | log_debug("Match %s successfully installed.", match_slot->match_callback.match_string); | |
3170 | ||
3171 | if (match_slot->match_callback.install_callback) { | |
3172 | sd_bus *bus; | |
3173 | ||
3174 | bus = sd_bus_message_get_bus(m); | |
3175 | ||
3176 | /* This function has been called as slot handler, and we want to call another slot handler. Let's | |
3177 | * update the slot callback metadata temporarily with our own data, and then revert back to the old | |
3178 | * values. */ | |
3179 | ||
3180 | assert(bus->current_slot == match_slot->match_callback.install_slot); | |
3181 | assert(bus->current_handler == add_match_callback); | |
3182 | assert(bus->current_userdata == userdata); | |
3183 | ||
3184 | bus->current_slot = match_slot; | |
3185 | bus->current_handler = match_slot->match_callback.install_callback; | |
3186 | bus->current_userdata = match_slot->userdata; | |
3187 | ||
3188 | r = match_slot->match_callback.install_callback(m, match_slot->userdata, ret_error); | |
3189 | ||
3190 | bus->current_slot = match_slot->match_callback.install_slot; | |
3191 | bus->current_handler = add_match_callback; | |
3192 | bus->current_userdata = userdata; | |
3193 | ||
3194 | match_slot->match_callback.install_slot = sd_bus_slot_unref(match_slot->match_callback.install_slot); | |
3195 | } else { | |
3196 | if (failed) /* Generic failure handling: destroy the connection */ | |
3197 | bus_enter_closing(sd_bus_message_get_bus(m)); | |
3198 | ||
3199 | r = 1; | |
3200 | } | |
3201 | ||
2e7e8e34 YW |
3202 | if (failed && match_slot->floating) |
3203 | bus_slot_disconnect(match_slot, true); | |
7593c7a4 LP |
3204 | |
3205 | sd_bus_slot_unref(match_slot); | |
3206 | ||
3207 | return r; | |
3208 | } | |
3209 | ||
3210 | static int bus_add_match_full( | |
19befb2d LP |
3211 | sd_bus *bus, |
3212 | sd_bus_slot **slot, | |
7593c7a4 | 3213 | bool asynchronous, |
19befb2d LP |
3214 | const char *match, |
3215 | sd_bus_message_handler_t callback, | |
7593c7a4 | 3216 | sd_bus_message_handler_t install_callback, |
19befb2d | 3217 | void *userdata) { |
d9f644e2 | 3218 | |
992c052c LP |
3219 | struct bus_match_component *components = NULL; |
3220 | unsigned n_components = 0; | |
2915234d | 3221 | sd_bus_slot *s = NULL; |
992c052c | 3222 | int r = 0; |
392d5b37 | 3223 | |
d6888822 | 3224 | assert_return(bus, -EINVAL); |
45b1f410 | 3225 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
d6888822 LP |
3226 | assert_return(match, -EINVAL); |
3227 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
392d5b37 | 3228 | |
992c052c LP |
3229 | r = bus_match_parse(match, &components, &n_components); |
3230 | if (r < 0) | |
3231 | goto finish; | |
29ddb38f | 3232 | |
19befb2d LP |
3233 | s = bus_slot_allocate(bus, !slot, BUS_MATCH_CALLBACK, sizeof(struct match_callback), userdata); |
3234 | if (!s) { | |
3235 | r = -ENOMEM; | |
3236 | goto finish; | |
3237 | } | |
3238 | ||
3239 | s->match_callback.callback = callback; | |
7593c7a4 | 3240 | s->match_callback.install_callback = install_callback; |
19befb2d | 3241 | |
992c052c | 3242 | if (bus->bus_client) { |
cc65fe5e | 3243 | enum bus_match_scope scope; |
29ddb38f | 3244 | |
cc65fe5e | 3245 | scope = bus_match_get_scope(components, n_components); |
19befb2d | 3246 | |
7593c7a4 | 3247 | /* Do not install server-side matches for matches against the local service, interface or bus path. */ |
9ee7a50c | 3248 | if (scope != BUS_MATCH_LOCAL) { |
cc65fe5e | 3249 | |
7593c7a4 | 3250 | /* We store the original match string, so that we can use it to remove the match again. */ |
cc65fe5e | 3251 | |
a132bef0 ZJS |
3252 | s->match_callback.match_string = strdup(match); |
3253 | if (!s->match_callback.match_string) { | |
3254 | r = -ENOMEM; | |
3255 | goto finish; | |
19befb2d | 3256 | } |
19befb2d | 3257 | |
fc2d4c89 | 3258 | if (asynchronous) { |
7593c7a4 LP |
3259 | r = bus_add_match_internal_async(bus, |
3260 | &s->match_callback.install_slot, | |
3261 | s->match_callback.match_string, | |
3262 | add_match_callback, | |
3263 | s); | |
fc2d4c89 LP |
3264 | |
3265 | if (r < 0) | |
3266 | return r; | |
3267 | ||
3268 | /* Make the slot of the match call floating now. We need the reference, but we don't | |
3269 | * want that this match pins the bus object, hence we first create it non-floating, but | |
3270 | * then make it floating. */ | |
3271 | r = sd_bus_slot_set_floating(s->match_callback.install_slot, true); | |
3272 | } else | |
7593c7a4 | 3273 | r = bus_add_match_internal(bus, s->match_callback.match_string); |
cc65fe5e LP |
3274 | if (r < 0) |
3275 | goto finish; | |
3276 | ||
3277 | s->match_added = true; | |
3278 | } | |
392d5b37 LP |
3279 | } |
3280 | ||
992c052c | 3281 | bus->match_callbacks_modified = true; |
19befb2d LP |
3282 | r = bus_match_add(&bus->match_callbacks, components, n_components, &s->match_callback); |
3283 | if (r < 0) | |
3284 | goto finish; | |
3285 | ||
3286 | if (slot) | |
3287 | *slot = s; | |
3288 | s = NULL; | |
917b5dc7 | 3289 | |
992c052c LP |
3290 | finish: |
3291 | bus_match_parse_free(components, n_components); | |
19befb2d LP |
3292 | sd_bus_slot_unref(s); |
3293 | ||
992c052c | 3294 | return r; |
917b5dc7 LP |
3295 | } |
3296 | ||
7593c7a4 LP |
3297 | _public_ int sd_bus_add_match( |
3298 | sd_bus *bus, | |
3299 | sd_bus_slot **slot, | |
3300 | const char *match, | |
3301 | sd_bus_message_handler_t callback, | |
3302 | void *userdata) { | |
3303 | ||
3304 | return bus_add_match_full(bus, slot, false, match, callback, NULL, userdata); | |
3305 | } | |
3306 | ||
3307 | _public_ int sd_bus_add_match_async( | |
3308 | sd_bus *bus, | |
3309 | sd_bus_slot **slot, | |
3310 | const char *match, | |
3311 | sd_bus_message_handler_t callback, | |
3312 | sd_bus_message_handler_t install_callback, | |
3313 | void *userdata) { | |
3314 | ||
3315 | return bus_add_match_full(bus, slot, true, match, callback, install_callback, userdata); | |
3316 | } | |
3317 | ||
992c052c LP |
3318 | bool bus_pid_changed(sd_bus *bus) { |
3319 | assert(bus); | |
f10dda3b | 3320 | |
992c052c LP |
3321 | /* We don't support people creating a bus connection and |
3322 | * keeping it around over a fork(). Let's complain. */ | |
d5a2b9a6 | 3323 | |
df0ff127 | 3324 | return bus->original_pid != getpid_cached(); |
d5a2b9a6 | 3325 | } |
40ca29a1 LP |
3326 | |
3327 | static int io_callback(sd_event_source *s, int fd, uint32_t revents, void *userdata) { | |
0927756b | 3328 | sd_bus *bus = userdata; |
40ca29a1 LP |
3329 | int r; |
3330 | ||
3331 | assert(bus); | |
3332 | ||
8a5cd31e LP |
3333 | /* Note that this is called both on input_fd, output_fd as well as inotify_fd events */ |
3334 | ||
40ca29a1 | 3335 | r = sd_bus_process(bus, NULL); |
5ae37ad8 LP |
3336 | if (r < 0) { |
3337 | log_debug_errno(r, "Processing of bus failed, closing down: %m"); | |
3338 | bus_enter_closing(bus); | |
3339 | } | |
40ca29a1 LP |
3340 | |
3341 | return 1; | |
3342 | } | |
3343 | ||
3344 | static int time_callback(sd_event_source *s, uint64_t usec, void *userdata) { | |
0927756b | 3345 | sd_bus *bus = userdata; |
40ca29a1 LP |
3346 | int r; |
3347 | ||
3348 | assert(bus); | |
3349 | ||
3350 | r = sd_bus_process(bus, NULL); | |
5ae37ad8 LP |
3351 | if (r < 0) { |
3352 | log_debug_errno(r, "Processing of bus failed, closing down: %m"); | |
3353 | bus_enter_closing(bus); | |
3354 | } | |
40ca29a1 LP |
3355 | |
3356 | return 1; | |
3357 | } | |
3358 | ||
3359 | static int prepare_callback(sd_event_source *s, void *userdata) { | |
3360 | sd_bus *bus = userdata; | |
3361 | int r, e; | |
3362 | usec_t until; | |
3363 | ||
3364 | assert(s); | |
3365 | assert(bus); | |
3366 | ||
3367 | e = sd_bus_get_events(bus); | |
5ae37ad8 LP |
3368 | if (e < 0) { |
3369 | r = e; | |
3370 | goto fail; | |
3371 | } | |
40ca29a1 LP |
3372 | |
3373 | if (bus->output_fd != bus->input_fd) { | |
3374 | ||
3375 | r = sd_event_source_set_io_events(bus->input_io_event_source, e & POLLIN); | |
3376 | if (r < 0) | |
5ae37ad8 | 3377 | goto fail; |
40ca29a1 LP |
3378 | |
3379 | r = sd_event_source_set_io_events(bus->output_io_event_source, e & POLLOUT); | |
5ae37ad8 | 3380 | } else |
40ca29a1 | 3381 | r = sd_event_source_set_io_events(bus->input_io_event_source, e); |
5ae37ad8 LP |
3382 | if (r < 0) |
3383 | goto fail; | |
40ca29a1 LP |
3384 | |
3385 | r = sd_bus_get_timeout(bus, &until); | |
3386 | if (r < 0) | |
5ae37ad8 | 3387 | goto fail; |
40ca29a1 LP |
3388 | if (r > 0) { |
3389 | int j; | |
3390 | ||
3391 | j = sd_event_source_set_time(bus->time_event_source, until); | |
5ae37ad8 LP |
3392 | if (j < 0) { |
3393 | r = j; | |
3394 | goto fail; | |
3395 | } | |
40ca29a1 LP |
3396 | } |
3397 | ||
3398 | r = sd_event_source_set_enabled(bus->time_event_source, r > 0); | |
3399 | if (r < 0) | |
5ae37ad8 LP |
3400 | goto fail; |
3401 | ||
3402 | return 1; | |
3403 | ||
3404 | fail: | |
3405 | log_debug_errno(r, "Preparing of bus events failed, closing down: %m"); | |
3406 | bus_enter_closing(bus); | |
40ca29a1 LP |
3407 | |
3408 | return 1; | |
3409 | } | |
3410 | ||
abc5fe72 LP |
3411 | static int quit_callback(sd_event_source *event, void *userdata) { |
3412 | sd_bus *bus = userdata; | |
3413 | ||
3414 | assert(event); | |
3415 | ||
c4e48030 LP |
3416 | if (bus->close_on_exit) { |
3417 | sd_bus_flush(bus); | |
3418 | sd_bus_close(bus); | |
3419 | } | |
abc5fe72 LP |
3420 | |
3421 | return 1; | |
3422 | } | |
3423 | ||
8a5cd31e | 3424 | int bus_attach_io_events(sd_bus *bus) { |
1e05d493 LP |
3425 | int r; |
3426 | ||
3427 | assert(bus); | |
3428 | ||
3429 | if (bus->input_fd < 0) | |
3430 | return 0; | |
3431 | ||
3432 | if (!bus->event) | |
3433 | return 0; | |
3434 | ||
3435 | if (!bus->input_io_event_source) { | |
151b9b96 | 3436 | r = sd_event_add_io(bus->event, &bus->input_io_event_source, bus->input_fd, 0, io_callback, bus); |
1e05d493 LP |
3437 | if (r < 0) |
3438 | return r; | |
3439 | ||
3440 | r = sd_event_source_set_prepare(bus->input_io_event_source, prepare_callback); | |
3441 | if (r < 0) | |
3442 | return r; | |
3443 | ||
3444 | r = sd_event_source_set_priority(bus->input_io_event_source, bus->event_priority); | |
9021bb9f TG |
3445 | if (r < 0) |
3446 | return r; | |
3447 | ||
356779df | 3448 | r = sd_event_source_set_description(bus->input_io_event_source, "bus-input"); |
1e05d493 LP |
3449 | } else |
3450 | r = sd_event_source_set_io_fd(bus->input_io_event_source, bus->input_fd); | |
3451 | ||
3452 | if (r < 0) | |
3453 | return r; | |
3454 | ||
3455 | if (bus->output_fd != bus->input_fd) { | |
3456 | assert(bus->output_fd >= 0); | |
3457 | ||
3458 | if (!bus->output_io_event_source) { | |
151b9b96 | 3459 | r = sd_event_add_io(bus->event, &bus->output_io_event_source, bus->output_fd, 0, io_callback, bus); |
1e05d493 LP |
3460 | if (r < 0) |
3461 | return r; | |
3462 | ||
3463 | r = sd_event_source_set_priority(bus->output_io_event_source, bus->event_priority); | |
9021bb9f TG |
3464 | if (r < 0) |
3465 | return r; | |
3466 | ||
356779df | 3467 | r = sd_event_source_set_description(bus->input_io_event_source, "bus-output"); |
1e05d493 LP |
3468 | } else |
3469 | r = sd_event_source_set_io_fd(bus->output_io_event_source, bus->output_fd); | |
3470 | ||
3471 | if (r < 0) | |
3472 | return r; | |
3473 | } | |
3474 | ||
3475 | return 0; | |
3476 | } | |
3477 | ||
8a5cd31e | 3478 | static void bus_detach_io_events(sd_bus *bus) { |
1e05d493 LP |
3479 | assert(bus); |
3480 | ||
3481 | if (bus->input_io_event_source) { | |
3482 | sd_event_source_set_enabled(bus->input_io_event_source, SD_EVENT_OFF); | |
3483 | bus->input_io_event_source = sd_event_source_unref(bus->input_io_event_source); | |
3484 | } | |
3485 | ||
3486 | if (bus->output_io_event_source) { | |
3487 | sd_event_source_set_enabled(bus->output_io_event_source, SD_EVENT_OFF); | |
3488 | bus->output_io_event_source = sd_event_source_unref(bus->output_io_event_source); | |
3489 | } | |
3490 | } | |
3491 | ||
8a5cd31e LP |
3492 | int bus_attach_inotify_event(sd_bus *bus) { |
3493 | int r; | |
3494 | ||
3495 | assert(bus); | |
3496 | ||
3497 | if (bus->inotify_fd < 0) | |
3498 | return 0; | |
3499 | ||
3500 | if (!bus->event) | |
3501 | return 0; | |
3502 | ||
3503 | if (!bus->inotify_event_source) { | |
3504 | r = sd_event_add_io(bus->event, &bus->inotify_event_source, bus->inotify_fd, EPOLLIN, io_callback, bus); | |
3505 | if (r < 0) | |
3506 | return r; | |
3507 | ||
3508 | r = sd_event_source_set_priority(bus->inotify_event_source, bus->event_priority); | |
3509 | if (r < 0) | |
3510 | return r; | |
3511 | ||
3512 | r = sd_event_source_set_description(bus->inotify_event_source, "bus-inotify"); | |
3513 | } else | |
3514 | r = sd_event_source_set_io_fd(bus->inotify_event_source, bus->inotify_fd); | |
3515 | if (r < 0) | |
3516 | return r; | |
3517 | ||
3518 | return 0; | |
3519 | } | |
3520 | ||
3521 | static void bus_detach_inotify_event(sd_bus *bus) { | |
3522 | assert(bus); | |
3523 | ||
3524 | if (bus->inotify_event_source) { | |
3525 | sd_event_source_set_enabled(bus->inotify_event_source, SD_EVENT_OFF); | |
3526 | bus->inotify_event_source = sd_event_source_unref(bus->inotify_event_source); | |
3527 | } | |
3528 | } | |
3529 | ||
d9f644e2 | 3530 | _public_ int sd_bus_attach_event(sd_bus *bus, sd_event *event, int priority) { |
40ca29a1 LP |
3531 | int r; |
3532 | ||
3533 | assert_return(bus, -EINVAL); | |
45b1f410 | 3534 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
40ca29a1 LP |
3535 | assert_return(!bus->event, -EBUSY); |
3536 | ||
3537 | assert(!bus->input_io_event_source); | |
3538 | assert(!bus->output_io_event_source); | |
3539 | assert(!bus->time_event_source); | |
3540 | ||
76b54375 LP |
3541 | if (event) |
3542 | bus->event = sd_event_ref(event); | |
3543 | else { | |
3544 | r = sd_event_default(&bus->event); | |
3545 | if (r < 0) | |
3546 | return r; | |
3547 | } | |
40ca29a1 | 3548 | |
1e05d493 | 3549 | bus->event_priority = priority; |
40ca29a1 | 3550 | |
6a0f1f6d | 3551 | r = sd_event_add_time(bus->event, &bus->time_event_source, CLOCK_MONOTONIC, 0, 0, time_callback, bus); |
40ca29a1 LP |
3552 | if (r < 0) |
3553 | goto fail; | |
3554 | ||
3555 | r = sd_event_source_set_priority(bus->time_event_source, priority); | |
3556 | if (r < 0) | |
3557 | goto fail; | |
3558 | ||
356779df | 3559 | r = sd_event_source_set_description(bus->time_event_source, "bus-time"); |
9021bb9f TG |
3560 | if (r < 0) |
3561 | goto fail; | |
3562 | ||
151b9b96 | 3563 | r = sd_event_add_exit(bus->event, &bus->quit_event_source, quit_callback, bus); |
abc5fe72 LP |
3564 | if (r < 0) |
3565 | goto fail; | |
3566 | ||
356779df | 3567 | r = sd_event_source_set_description(bus->quit_event_source, "bus-exit"); |
9021bb9f TG |
3568 | if (r < 0) |
3569 | goto fail; | |
3570 | ||
8a5cd31e LP |
3571 | r = bus_attach_io_events(bus); |
3572 | if (r < 0) | |
3573 | goto fail; | |
3574 | ||
3575 | r = bus_attach_inotify_event(bus); | |
1e05d493 LP |
3576 | if (r < 0) |
3577 | goto fail; | |
3578 | ||
40ca29a1 LP |
3579 | return 0; |
3580 | ||
3581 | fail: | |
3582 | sd_bus_detach_event(bus); | |
3583 | return r; | |
3584 | } | |
3585 | ||
d9f644e2 | 3586 | _public_ int sd_bus_detach_event(sd_bus *bus) { |
40ca29a1 | 3587 | assert_return(bus, -EINVAL); |
45b1f410 | 3588 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
a82cafb9 LP |
3589 | |
3590 | if (!bus->event) | |
3591 | return 0; | |
40ca29a1 | 3592 | |
8a5cd31e LP |
3593 | bus_detach_io_events(bus); |
3594 | bus_detach_inotify_event(bus); | |
40ca29a1 | 3595 | |
86befb40 LP |
3596 | if (bus->time_event_source) { |
3597 | sd_event_source_set_enabled(bus->time_event_source, SD_EVENT_OFF); | |
40ca29a1 | 3598 | bus->time_event_source = sd_event_source_unref(bus->time_event_source); |
86befb40 | 3599 | } |
40ca29a1 | 3600 | |
86befb40 LP |
3601 | if (bus->quit_event_source) { |
3602 | sd_event_source_set_enabled(bus->quit_event_source, SD_EVENT_OFF); | |
abc5fe72 | 3603 | bus->quit_event_source = sd_event_source_unref(bus->quit_event_source); |
86befb40 | 3604 | } |
abc5fe72 | 3605 | |
93f1bcf4 | 3606 | bus->event = sd_event_unref(bus->event); |
a82cafb9 | 3607 | return 1; |
40ca29a1 | 3608 | } |
affff0b6 | 3609 | |
2be44176 LP |
3610 | _public_ sd_event* sd_bus_get_event(sd_bus *bus) { |
3611 | assert_return(bus, NULL); | |
3612 | ||
3613 | return bus->event; | |
3614 | } | |
3615 | ||
19befb2d LP |
3616 | _public_ sd_bus_message* sd_bus_get_current_message(sd_bus *bus) { |
3617 | assert_return(bus, NULL); | |
3618 | ||
3619 | return bus->current_message; | |
3620 | } | |
3621 | ||
3622 | _public_ sd_bus_slot* sd_bus_get_current_slot(sd_bus *bus) { | |
affff0b6 LP |
3623 | assert_return(bus, NULL); |
3624 | ||
19befb2d | 3625 | return bus->current_slot; |
affff0b6 | 3626 | } |
76b54375 | 3627 | |
caa82984 LP |
3628 | _public_ sd_bus_message_handler_t sd_bus_get_current_handler(sd_bus *bus) { |
3629 | assert_return(bus, NULL); | |
3630 | ||
3631 | return bus->current_handler; | |
3632 | } | |
3633 | ||
3634 | _public_ void* sd_bus_get_current_userdata(sd_bus *bus) { | |
3635 | assert_return(bus, NULL); | |
3636 | ||
3637 | return bus->current_userdata; | |
3638 | } | |
3639 | ||
76b54375 LP |
3640 | static int bus_default(int (*bus_open)(sd_bus **), sd_bus **default_bus, sd_bus **ret) { |
3641 | sd_bus *b = NULL; | |
3642 | int r; | |
3643 | ||
3644 | assert(bus_open); | |
3645 | assert(default_bus); | |
3646 | ||
3647 | if (!ret) | |
3648 | return !!*default_bus; | |
3649 | ||
3650 | if (*default_bus) { | |
3651 | *ret = sd_bus_ref(*default_bus); | |
3652 | return 0; | |
3653 | } | |
3654 | ||
3655 | r = bus_open(&b); | |
3656 | if (r < 0) | |
3657 | return r; | |
3658 | ||
3659 | b->default_bus_ptr = default_bus; | |
3660 | b->tid = gettid(); | |
3661 | *default_bus = b; | |
3662 | ||
3663 | *ret = b; | |
3664 | return 1; | |
3665 | } | |
3666 | ||
3667 | _public_ int sd_bus_default_system(sd_bus **ret) { | |
76b54375 LP |
3668 | return bus_default(sd_bus_open_system, &default_system_bus, ret); |
3669 | } | |
3670 | ||
fa2f8973 | 3671 | _public_ int sd_bus_default_user(sd_bus **ret) { |
76b54375 LP |
3672 | return bus_default(sd_bus_open_user, &default_user_bus, ret); |
3673 | } | |
3674 | ||
af08d2f9 | 3675 | _public_ int sd_bus_default(sd_bus **ret) { |
45b1f410 NM |
3676 | int (*bus_open)(sd_bus **) = NULL; |
3677 | sd_bus **busp; | |
af08d2f9 | 3678 | |
45b1f410 NM |
3679 | busp = bus_choose_default(&bus_open); |
3680 | return bus_default(bus_open, busp, ret); | |
af08d2f9 LP |
3681 | } |
3682 | ||
76b54375 LP |
3683 | _public_ int sd_bus_get_tid(sd_bus *b, pid_t *tid) { |
3684 | assert_return(b, -EINVAL); | |
3685 | assert_return(tid, -EINVAL); | |
3686 | assert_return(!bus_pid_changed(b), -ECHILD); | |
3687 | ||
3688 | if (b->tid != 0) { | |
3689 | *tid = b->tid; | |
3690 | return 0; | |
3691 | } | |
3692 | ||
3693 | if (b->event) | |
3694 | return sd_event_get_tid(b->event, tid); | |
3695 | ||
3696 | return -ENXIO; | |
3697 | } | |
28383ba1 | 3698 | |
a6278b88 LP |
3699 | _public_ int sd_bus_path_encode(const char *prefix, const char *external_id, char **ret_path) { |
3700 | _cleanup_free_ char *e = NULL; | |
3701 | char *ret; | |
3702 | ||
3703 | assert_return(object_path_is_valid(prefix), -EINVAL); | |
3704 | assert_return(external_id, -EINVAL); | |
3705 | assert_return(ret_path, -EINVAL); | |
3706 | ||
3707 | e = bus_label_escape(external_id); | |
3708 | if (!e) | |
3709 | return -ENOMEM; | |
3710 | ||
605405c6 | 3711 | ret = strjoin(prefix, "/", e); |
a6278b88 LP |
3712 | if (!ret) |
3713 | return -ENOMEM; | |
3714 | ||
3715 | *ret_path = ret; | |
3716 | return 0; | |
28383ba1 LP |
3717 | } |
3718 | ||
a6278b88 LP |
3719 | _public_ int sd_bus_path_decode(const char *path, const char *prefix, char **external_id) { |
3720 | const char *e; | |
3721 | char *ret; | |
3722 | ||
3723 | assert_return(object_path_is_valid(path), -EINVAL); | |
3724 | assert_return(object_path_is_valid(prefix), -EINVAL); | |
3725 | assert_return(external_id, -EINVAL); | |
3726 | ||
3727 | e = object_path_startswith(path, prefix); | |
3728 | if (!e) { | |
3729 | *external_id = NULL; | |
3730 | return 0; | |
3731 | } | |
3732 | ||
3733 | ret = bus_label_unescape(e); | |
3734 | if (!ret) | |
3735 | return -ENOMEM; | |
3736 | ||
3737 | *external_id = ret; | |
3738 | return 1; | |
28383ba1 | 3739 | } |
5b12334d | 3740 | |
dfb815c3 DH |
3741 | _public_ int sd_bus_path_encode_many(char **out, const char *path_template, ...) { |
3742 | _cleanup_strv_free_ char **labels = NULL; | |
3743 | char *path, *path_pos, **label_pos; | |
3744 | const char *sep, *template_pos; | |
3745 | size_t path_length; | |
3746 | va_list list; | |
3747 | int r; | |
3748 | ||
3749 | assert_return(out, -EINVAL); | |
3750 | assert_return(path_template, -EINVAL); | |
3751 | ||
3752 | path_length = strlen(path_template); | |
3753 | ||
19932084 | 3754 | va_start(list, path_template); |
dfb815c3 DH |
3755 | for (sep = strchr(path_template, '%'); sep; sep = strchr(sep + 1, '%')) { |
3756 | const char *arg; | |
3757 | char *label; | |
3758 | ||
3759 | arg = va_arg(list, const char *); | |
3760 | if (!arg) { | |
3761 | va_end(list); | |
3762 | return -EINVAL; | |
3763 | } | |
3764 | ||
3765 | label = bus_label_escape(arg); | |
3766 | if (!label) { | |
3767 | va_end(list); | |
3768 | return -ENOMEM; | |
3769 | } | |
3770 | ||
3771 | r = strv_consume(&labels, label); | |
3772 | if (r < 0) { | |
3773 | va_end(list); | |
3774 | return r; | |
3775 | } | |
3776 | ||
3777 | /* add label length, but account for the format character */ | |
3778 | path_length += strlen(label) - 1; | |
3779 | } | |
3780 | va_end(list); | |
3781 | ||
3782 | path = malloc(path_length + 1); | |
3783 | if (!path) | |
3784 | return -ENOMEM; | |
3785 | ||
3786 | path_pos = path; | |
3787 | label_pos = labels; | |
3788 | ||
3789 | for (template_pos = path_template; *template_pos; ) { | |
3790 | sep = strchrnul(template_pos, '%'); | |
3791 | path_pos = mempcpy(path_pos, template_pos, sep - template_pos); | |
3792 | if (!*sep) | |
3793 | break; | |
3794 | ||
3795 | path_pos = stpcpy(path_pos, *label_pos++); | |
3796 | template_pos = sep + 1; | |
3797 | } | |
3798 | ||
3799 | *path_pos = 0; | |
3800 | *out = path; | |
3801 | return 0; | |
3802 | } | |
3803 | ||
3804 | _public_ int sd_bus_path_decode_many(const char *path, const char *path_template, ...) { | |
3805 | _cleanup_strv_free_ char **labels = NULL; | |
3806 | const char *template_pos, *path_pos; | |
3807 | char **label_pos; | |
3808 | va_list list; | |
3809 | int r; | |
3810 | ||
3811 | /* | |
3812 | * This decodes an object-path based on a template argument. The | |
3813 | * template consists of a verbatim path, optionally including special | |
3814 | * directives: | |
3815 | * | |
3816 | * - Each occurrence of '%' in the template matches an arbitrary | |
3817 | * substring of a label in the given path. At most one such | |
3818 | * directive is allowed per label. For each such directive, the | |
3819 | * caller must provide an output parameter (char **) via va_arg. If | |
3820 | * NULL is passed, the given label is verified, but not returned. | |
3821 | * For each matched label, the *decoded* label is stored in the | |
3822 | * passed output argument, and the caller is responsible to free | |
3823 | * it. Note that the output arguments are only modified if the | |
3824 | * actualy path matched the template. Otherwise, they're left | |
3825 | * untouched. | |
3826 | * | |
3827 | * This function returns <0 on error, 0 if the path does not match the | |
3828 | * template, 1 if it matched. | |
3829 | */ | |
3830 | ||
3831 | assert_return(path, -EINVAL); | |
3832 | assert_return(path_template, -EINVAL); | |
3833 | ||
3834 | path_pos = path; | |
3835 | ||
3836 | for (template_pos = path_template; *template_pos; ) { | |
3837 | const char *sep; | |
3838 | size_t length; | |
3839 | char *label; | |
3840 | ||
3841 | /* verify everything until the next '%' matches verbatim */ | |
3842 | sep = strchrnul(template_pos, '%'); | |
3843 | length = sep - template_pos; | |
3844 | if (strncmp(path_pos, template_pos, length)) | |
3845 | return 0; | |
3846 | ||
3847 | path_pos += length; | |
3848 | template_pos += length; | |
3849 | ||
3850 | if (!*template_pos) | |
3851 | break; | |
3852 | ||
3853 | /* We found the next '%' character. Everything up until here | |
3854 | * matched. We now skip ahead to the end of this label and make | |
3855 | * sure it matches the tail of the label in the path. Then we | |
3856 | * decode the string in-between and save it for later use. */ | |
3857 | ||
3858 | ++template_pos; /* skip over '%' */ | |
3859 | ||
3860 | sep = strchrnul(template_pos, '/'); | |
3861 | length = sep - template_pos; /* length of suffix to match verbatim */ | |
3862 | ||
3863 | /* verify the suffixes match */ | |
3864 | sep = strchrnul(path_pos, '/'); | |
3865 | if (sep - path_pos < (ssize_t)length || | |
3866 | strncmp(sep - length, template_pos, length)) | |
3867 | return 0; | |
3868 | ||
3869 | template_pos += length; /* skip over matched label */ | |
3870 | length = sep - path_pos - length; /* length of sub-label to decode */ | |
3871 | ||
3872 | /* store unescaped label for later use */ | |
3873 | label = bus_label_unescape_n(path_pos, length); | |
3874 | if (!label) | |
3875 | return -ENOMEM; | |
3876 | ||
3877 | r = strv_consume(&labels, label); | |
3878 | if (r < 0) | |
3879 | return r; | |
3880 | ||
3881 | path_pos = sep; /* skip decoded label and suffix */ | |
3882 | } | |
3883 | ||
3884 | /* end of template must match end of path */ | |
3885 | if (*path_pos) | |
3886 | return 0; | |
3887 | ||
3888 | /* copy the labels over to the caller */ | |
19932084 | 3889 | va_start(list, path_template); |
dfb815c3 DH |
3890 | for (label_pos = labels; label_pos && *label_pos; ++label_pos) { |
3891 | char **arg; | |
3892 | ||
3893 | arg = va_arg(list, char **); | |
3894 | if (arg) | |
3895 | *arg = *label_pos; | |
3896 | else | |
3897 | free(*label_pos); | |
3898 | } | |
3899 | va_end(list); | |
3900 | ||
86ed6d1b | 3901 | labels = mfree(labels); |
dfb815c3 DH |
3902 | return 1; |
3903 | } | |
3904 | ||
ae095f86 | 3905 | _public_ int sd_bus_try_close(sd_bus *bus) { |
ae095f86 | 3906 | assert_return(bus, -EINVAL); |
45b1f410 | 3907 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
ae095f86 | 3908 | assert_return(!bus_pid_changed(bus), -ECHILD); |
a3d59cd1 | 3909 | |
a132bef0 | 3910 | return -EOPNOTSUPP; |
ae095f86 | 3911 | } |
5972fe95 | 3912 | |
455971c1 | 3913 | _public_ int sd_bus_get_description(sd_bus *bus, const char **description) { |
5972fe95 | 3914 | assert_return(bus, -EINVAL); |
45b1f410 | 3915 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
455971c1 | 3916 | assert_return(description, -EINVAL); |
f4b2933e | 3917 | assert_return(bus->description, -ENXIO); |
5972fe95 LP |
3918 | assert_return(!bus_pid_changed(bus), -ECHILD); |
3919 | ||
201e419a LP |
3920 | if (bus->description) |
3921 | *description = bus->description; | |
3922 | else if (bus->is_system) | |
3923 | *description = "system"; | |
3924 | else if (bus->is_user) | |
3925 | *description = "user"; | |
3926 | else | |
3927 | *description = NULL; | |
3928 | ||
5972fe95 LP |
3929 | return 0; |
3930 | } | |
fe3f22d1 DK |
3931 | |
3932 | int bus_get_root_path(sd_bus *bus) { | |
3933 | int r; | |
3934 | ||
3935 | if (bus->cgroup_root) | |
3936 | return 0; | |
3937 | ||
3938 | r = cg_get_root_path(&bus->cgroup_root); | |
3939 | if (r == -ENOENT) { | |
3940 | bus->cgroup_root = strdup("/"); | |
3941 | if (!bus->cgroup_root) | |
3942 | return -ENOMEM; | |
3943 | ||
3944 | r = 0; | |
3945 | } | |
3946 | ||
3947 | return r; | |
3948 | } | |
3acc1daf LP |
3949 | |
3950 | _public_ int sd_bus_get_scope(sd_bus *bus, const char **scope) { | |
3acc1daf | 3951 | assert_return(bus, -EINVAL); |
45b1f410 | 3952 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
3acc1daf LP |
3953 | assert_return(scope, -EINVAL); |
3954 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
3955 | ||
3acc1daf LP |
3956 | if (bus->is_user) { |
3957 | *scope = "user"; | |
5b820358 | 3958 | return 0; |
3acc1daf LP |
3959 | } |
3960 | ||
3961 | if (bus->is_system) { | |
3962 | *scope = "system"; | |
5b820358 LP |
3963 | return 0; |
3964 | } | |
3965 | ||
3966 | return -ENODATA; | |
3967 | } | |
3968 | ||
3969 | _public_ int sd_bus_get_address(sd_bus *bus, const char **address) { | |
3970 | ||
3971 | assert_return(bus, -EINVAL); | |
45b1f410 | 3972 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
5b820358 LP |
3973 | assert_return(address, -EINVAL); |
3974 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
3975 | ||
3976 | if (bus->address) { | |
3977 | *address = bus->address; | |
3978 | return 0; | |
3acc1daf LP |
3979 | } |
3980 | ||
3981 | return -ENODATA; | |
3982 | } | |
224b3787 | 3983 | |
882897af | 3984 | _public_ int sd_bus_get_creds_mask(sd_bus *bus, uint64_t *mask) { |
224b3787 | 3985 | assert_return(bus, -EINVAL); |
45b1f410 | 3986 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
224b3787 LP |
3987 | assert_return(mask, -EINVAL); |
3988 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
3989 | ||
3990 | *mask = bus->creds_mask; | |
3991 | return 0; | |
3992 | } | |
3993 | ||
882897af | 3994 | _public_ int sd_bus_is_bus_client(sd_bus *bus) { |
224b3787 | 3995 | assert_return(bus, -EINVAL); |
45b1f410 | 3996 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
224b3787 LP |
3997 | assert_return(!bus_pid_changed(bus), -ECHILD); |
3998 | ||
3999 | return bus->bus_client; | |
4000 | } | |
4001 | ||
882897af | 4002 | _public_ int sd_bus_is_server(sd_bus *bus) { |
224b3787 | 4003 | assert_return(bus, -EINVAL); |
45b1f410 | 4004 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
224b3787 LP |
4005 | assert_return(!bus_pid_changed(bus), -ECHILD); |
4006 | ||
4007 | return bus->is_server; | |
4008 | } | |
4009 | ||
882897af | 4010 | _public_ int sd_bus_is_anonymous(sd_bus *bus) { |
224b3787 | 4011 | assert_return(bus, -EINVAL); |
45b1f410 | 4012 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
224b3787 LP |
4013 | assert_return(!bus_pid_changed(bus), -ECHILD); |
4014 | ||
4015 | return bus->anonymous_auth; | |
4016 | } | |
4017 | ||
882897af | 4018 | _public_ int sd_bus_is_trusted(sd_bus *bus) { |
224b3787 | 4019 | assert_return(bus, -EINVAL); |
45b1f410 | 4020 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
224b3787 LP |
4021 | assert_return(!bus_pid_changed(bus), -ECHILD); |
4022 | ||
4023 | return bus->trusted; | |
4024 | } | |
4025 | ||
882897af | 4026 | _public_ int sd_bus_is_monitor(sd_bus *bus) { |
224b3787 | 4027 | assert_return(bus, -EINVAL); |
45b1f410 | 4028 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
224b3787 LP |
4029 | assert_return(!bus_pid_changed(bus), -ECHILD); |
4030 | ||
c7db1984 | 4031 | return bus->is_monitor; |
224b3787 | 4032 | } |
fa2f8973 LP |
4033 | |
4034 | static void flush_close(sd_bus *bus) { | |
4035 | if (!bus) | |
4036 | return; | |
4037 | ||
4038 | /* Flushes and closes the specified bus. We take a ref before, | |
4039 | * to ensure the flushing does not cause the bus to be | |
4040 | * unreferenced. */ | |
4041 | ||
4042 | sd_bus_flush_close_unref(sd_bus_ref(bus)); | |
4043 | } | |
4044 | ||
4045 | _public_ void sd_bus_default_flush_close(void) { | |
4046 | flush_close(default_starter_bus); | |
4047 | flush_close(default_user_bus); | |
4048 | flush_close(default_system_bus); | |
4049 | } | |
fbb4603d LP |
4050 | |
4051 | _public_ int sd_bus_set_exit_on_disconnect(sd_bus *bus, int b) { | |
4052 | assert_return(bus, -EINVAL); | |
45b1f410 | 4053 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
fbb4603d LP |
4054 | |
4055 | /* Turns on exit-on-disconnect, and triggers it immediately if the bus connection was already | |
4056 | * disconnected. Note that this is triggered exclusively on disconnections triggered by the server side, never | |
4057 | * from the client side. */ | |
4058 | bus->exit_on_disconnect = b; | |
4059 | ||
4060 | /* If the exit condition was triggered already, exit immediately. */ | |
4061 | return bus_exit_now(bus); | |
4062 | } | |
4063 | ||
4064 | _public_ int sd_bus_get_exit_on_disconnect(sd_bus *bus) { | |
4065 | assert_return(bus, -EINVAL); | |
45b1f410 | 4066 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
fbb4603d LP |
4067 | |
4068 | return bus->exit_on_disconnect; | |
4069 | } | |
48ef41a3 LP |
4070 | |
4071 | _public_ int sd_bus_set_sender(sd_bus *bus, const char *sender) { | |
4072 | assert_return(bus, -EINVAL); | |
45b1f410 | 4073 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
48ef41a3 LP |
4074 | assert_return(!bus->bus_client, -EPERM); |
4075 | assert_return(!sender || service_name_is_valid(sender), -EINVAL); | |
4076 | ||
4077 | return free_and_strdup(&bus->patch_sender, sender); | |
4078 | } | |
4079 | ||
4080 | _public_ int sd_bus_get_sender(sd_bus *bus, const char **ret) { | |
4081 | assert_return(bus, -EINVAL); | |
45b1f410 | 4082 | assert_return(bus = bus_resolve(bus), -ENOPKG); |
48ef41a3 LP |
4083 | assert_return(ret, -EINVAL); |
4084 | ||
4085 | if (!bus->patch_sender) | |
4086 | return -ENODATA; | |
4087 | ||
4088 | *ret = bus->patch_sender; | |
4089 | return 0; | |
4090 | } | |
2770da02 LP |
4091 | |
4092 | _public_ int sd_bus_get_n_queued_read(sd_bus *bus, uint64_t *ret) { | |
4093 | assert_return(bus, -EINVAL); | |
4094 | assert_return(bus = bus_resolve(bus), -ENOPKG); | |
4095 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
4096 | assert_return(ret, -EINVAL); | |
4097 | ||
4098 | *ret = bus->rqueue_size; | |
4099 | return 0; | |
4100 | } | |
4101 | ||
4102 | _public_ int sd_bus_get_n_queued_write(sd_bus *bus, uint64_t *ret) { | |
4103 | assert_return(bus, -EINVAL); | |
4104 | assert_return(bus = bus_resolve(bus), -ENOPKG); | |
4105 | assert_return(!bus_pid_changed(bus), -ECHILD); | |
4106 | assert_return(ret, -EINVAL); | |
4107 | ||
4108 | *ret = bus->wqueue_size; | |
4109 | return 0; | |
4110 | } | |
385b2eb2 YW |
4111 | |
4112 | _public_ int sd_bus_set_method_call_timeout(sd_bus *bus, uint64_t usec) { | |
4113 | assert_return(bus, -EINVAL); | |
4114 | assert_return(bus = bus_resolve(bus), -ENOPKG); | |
4115 | ||
4116 | bus->method_call_timeout = usec; | |
4117 | return 0; | |
4118 | } | |
4119 | ||
4120 | _public_ int sd_bus_get_method_call_timeout(sd_bus *bus, uint64_t *ret) { | |
4121 | const char *e; | |
4122 | usec_t usec; | |
4123 | ||
4124 | assert_return(bus, -EINVAL); | |
4125 | assert_return(bus = bus_resolve(bus), -ENOPKG); | |
4126 | assert_return(ret, -EINVAL); | |
4127 | ||
4128 | if (bus->method_call_timeout != 0) { | |
4129 | *ret = bus->method_call_timeout; | |
4130 | return 0; | |
4131 | } | |
4132 | ||
4133 | e = secure_getenv("SYSTEMD_BUS_TIMEOUT"); | |
4134 | if (e && parse_sec(e, &usec) >= 0 && usec != 0) { | |
4135 | /* Save the parsed value to avoid multiple parsing. To change the timeout value, | |
4136 | * use sd_bus_set_method_call_timeout() instead of setenv(). */ | |
4137 | *ret = bus->method_call_timeout = usec; | |
4138 | return 0; | |
4139 | } | |
4140 | ||
4141 | *ret = bus->method_call_timeout = BUS_DEFAULT_TIMEOUT; | |
4142 | return 0; | |
4143 | } | |
c4e48030 LP |
4144 | |
4145 | _public_ int sd_bus_set_close_on_exit(sd_bus *bus, int b) { | |
4146 | assert_return(bus, -EINVAL); | |
4147 | assert_return(bus = bus_resolve(bus), -ENOPKG); | |
4148 | ||
4149 | bus->close_on_exit = b; | |
4150 | return 0; | |
4151 | } | |
4152 | ||
4153 | _public_ int sd_bus_get_close_on_exit(sd_bus *bus) { | |
4154 | assert_return(bus, -EINVAL); | |
4155 | assert_return(bus = bus_resolve(bus), -ENOPKG); | |
4156 | ||
4157 | return bus->close_on_exit; | |
4158 | } |