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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
40ca29a1 | 2 | |
a8fbdf54 TA |
3 | #include <errno.h> |
4 | #include <fcntl.h> | |
5 | #include <inttypes.h> | |
a8fbdf54 | 6 | #include <stdlib.h> |
a8fbdf54 TA |
7 | #include <sys/ioctl.h> |
8 | #include <sys/resource.h> | |
0c842e0a | 9 | #include <sys/socket.h> |
a8fbdf54 | 10 | #include <unistd.h> |
0c842e0a | 11 | |
4f5dd394 | 12 | #include "sd-bus.h" |
ebd011d9 LP |
13 | #include "sd-daemon.h" |
14 | #include "sd-event.h" | |
a8fbdf54 | 15 | #include "sd-id128.h" |
d53d9474 | 16 | |
b5efdb8a | 17 | #include "alloc-util.h" |
d53d9474 LP |
18 | #include "bus-internal.h" |
19 | #include "bus-label.h" | |
20 | #include "bus-message.h" | |
3ffd4af2 | 21 | #include "bus-util.h" |
52610b02 | 22 | #include "cap-list.h" |
21771f33 | 23 | #include "cgroup-util.h" |
049af8ad | 24 | #include "mountpoint-util.h" |
73186d53 | 25 | #include "nsflags.h" |
6bedfcbb | 26 | #include "parse-util.h" |
657ee2d8 | 27 | #include "path-util.h" |
78f22b97 | 28 | #include "rlimit-util.h" |
269e4d2d | 29 | #include "socket-util.h" |
15a5e950 | 30 | #include "stdio-util.h" |
d53d9474 | 31 | #include "strv.h" |
ee104e11 | 32 | #include "user-util.h" |
40ca29a1 | 33 | |
19070062 | 34 | static int name_owner_change_callback(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) { |
40ca29a1 LP |
35 | sd_event *e = userdata; |
36 | ||
40ca29a1 LP |
37 | assert(m); |
38 | assert(e); | |
39 | ||
19070062 | 40 | sd_bus_close(sd_bus_message_get_bus(m)); |
6203e07a | 41 | sd_event_exit(e, 0); |
b27adf35 | 42 | |
40ca29a1 LP |
43 | return 1; |
44 | } | |
45 | ||
6203e07a | 46 | int bus_async_unregister_and_exit(sd_event *e, sd_bus *bus, const char *name) { |
75152a4d | 47 | const char *match; |
11846aa7 | 48 | const char *unique; |
40ca29a1 LP |
49 | int r; |
50 | ||
51 | assert(e); | |
52 | assert(bus); | |
53 | assert(name); | |
54 | ||
6203e07a LP |
55 | /* We unregister the name here and then wait for the |
56 | * NameOwnerChanged signal for this event to arrive before we | |
57 | * quit. We do this in order to make sure that any queued | |
58 | * requests are still processed before we really exit. */ | |
59 | ||
11846aa7 | 60 | r = sd_bus_get_unique_name(bus, &unique); |
40ca29a1 LP |
61 | if (r < 0) |
62 | return r; | |
63 | ||
75152a4d LP |
64 | match = strjoina( |
65 | "sender='org.freedesktop.DBus'," | |
66 | "type='signal'," | |
67 | "interface='org.freedesktop.DBus'," | |
68 | "member='NameOwnerChanged'," | |
69 | "path='/org/freedesktop/DBus'," | |
70 | "arg0='", name, "',", | |
71 | "arg1='", unique, "',", | |
72 | "arg2=''"); | |
73 | ||
74 | r = sd_bus_add_match_async(bus, NULL, match, name_owner_change_callback, NULL, e); | |
40ca29a1 LP |
75 | if (r < 0) |
76 | return r; | |
77 | ||
75152a4d | 78 | r = sd_bus_release_name_async(bus, NULL, name, NULL, NULL); |
40ca29a1 LP |
79 | if (r < 0) |
80 | return r; | |
81 | ||
40ca29a1 LP |
82 | return 0; |
83 | } | |
84 | ||
37224a5f LP |
85 | int bus_event_loop_with_idle( |
86 | sd_event *e, | |
87 | sd_bus *bus, | |
88 | const char *name, | |
89 | usec_t timeout, | |
90 | check_idle_t check_idle, | |
91 | void *userdata) { | |
40ca29a1 | 92 | bool exiting = false; |
6203e07a | 93 | int r, code; |
40ca29a1 LP |
94 | |
95 | assert(e); | |
96 | assert(bus); | |
97 | assert(name); | |
98 | ||
99 | for (;;) { | |
37224a5f LP |
100 | bool idle; |
101 | ||
40ca29a1 LP |
102 | r = sd_event_get_state(e); |
103 | if (r < 0) | |
104 | return r; | |
40ca29a1 LP |
105 | if (r == SD_EVENT_FINISHED) |
106 | break; | |
107 | ||
37224a5f LP |
108 | if (check_idle) |
109 | idle = check_idle(userdata); | |
110 | else | |
111 | idle = true; | |
112 | ||
113 | r = sd_event_run(e, exiting || !idle ? (uint64_t) -1 : timeout); | |
40ca29a1 LP |
114 | if (r < 0) |
115 | return r; | |
116 | ||
a8ba6cd1 | 117 | if (r == 0 && !exiting && idle) { |
b27adf35 LP |
118 | |
119 | r = sd_bus_try_close(bus); | |
120 | if (r == -EBUSY) | |
121 | continue; | |
122 | ||
430e21c2 LP |
123 | /* Fallback for dbus1 connections: we |
124 | * unregister the name and wait for the | |
125 | * response to come through for it */ | |
15411c0c | 126 | if (r == -EOPNOTSUPP) { |
430e21c2 LP |
127 | |
128 | /* Inform the service manager that we | |
129 | * are going down, so that it will | |
130 | * queue all further start requests, | |
131 | * instead of assuming we are already | |
132 | * running. */ | |
133 | sd_notify(false, "STOPPING=1"); | |
b27adf35 LP |
134 | |
135 | r = bus_async_unregister_and_exit(e, bus, name); | |
136 | if (r < 0) | |
137 | return r; | |
138 | ||
139 | exiting = true; | |
140 | continue; | |
141 | } | |
142 | ||
40ca29a1 LP |
143 | if (r < 0) |
144 | return r; | |
145 | ||
b27adf35 LP |
146 | sd_event_exit(e, 0); |
147 | break; | |
40ca29a1 LP |
148 | } |
149 | } | |
150 | ||
6203e07a LP |
151 | r = sd_event_get_exit_code(e, &code); |
152 | if (r < 0) | |
153 | return r; | |
154 | ||
155 | return code; | |
40ca29a1 LP |
156 | } |
157 | ||
5fd38859 | 158 | int bus_name_has_owner(sd_bus *c, const char *name, sd_bus_error *error) { |
4afd3348 | 159 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *rep = NULL; |
5fd38859 DH |
160 | int r, has_owner = 0; |
161 | ||
162 | assert(c); | |
163 | assert(name); | |
164 | ||
165 | r = sd_bus_call_method(c, | |
166 | "org.freedesktop.DBus", | |
167 | "/org/freedesktop/dbus", | |
168 | "org.freedesktop.DBus", | |
169 | "NameHasOwner", | |
170 | error, | |
171 | &rep, | |
172 | "s", | |
173 | name); | |
174 | if (r < 0) | |
175 | return r; | |
176 | ||
177 | r = sd_bus_message_read_basic(rep, 'b', &has_owner); | |
178 | if (r < 0) | |
179 | return sd_bus_error_set_errno(error, r); | |
180 | ||
181 | return has_owner; | |
182 | } | |
183 | ||
718db961 | 184 | int bus_check_peercred(sd_bus *c) { |
0c842e0a | 185 | struct ucred ucred; |
3e641e36 | 186 | int fd, r; |
0c842e0a TG |
187 | |
188 | assert(c); | |
189 | ||
190 | fd = sd_bus_get_fd(c); | |
0f8bd8de LP |
191 | if (fd < 0) |
192 | return fd; | |
0c842e0a | 193 | |
3e641e36 LP |
194 | r = getpeercred(fd, &ucred); |
195 | if (r < 0) | |
196 | return r; | |
0c842e0a TG |
197 | |
198 | if (ucred.uid != 0 && ucred.uid != geteuid()) | |
199 | return -EPERM; | |
200 | ||
201 | return 1; | |
202 | } | |
203 | ||
266f3e26 | 204 | int bus_connect_system_systemd(sd_bus **_bus) { |
b1a4981a | 205 | _cleanup_(sd_bus_close_unrefp) sd_bus *bus = NULL; |
0c842e0a | 206 | int r; |
0c842e0a TG |
207 | |
208 | assert(_bus); | |
209 | ||
0f8bd8de | 210 | if (geteuid() != 0) |
266f3e26 | 211 | return sd_bus_default_system(_bus); |
a1da8583 | 212 | |
a132bef0 ZJS |
213 | /* If we are root then let's talk directly to the system |
214 | * instance, instead of going via the bus */ | |
a6aa8912 LP |
215 | |
216 | r = sd_bus_new(&bus); | |
0f8bd8de LP |
217 | if (r < 0) |
218 | return r; | |
a1da8583 | 219 | |
a6aa8912 LP |
220 | r = sd_bus_set_address(bus, "unix:path=/run/systemd/private"); |
221 | if (r < 0) | |
222 | return r; | |
223 | ||
224 | r = sd_bus_start(bus); | |
225 | if (r < 0) | |
266f3e26 | 226 | return sd_bus_default_system(_bus); |
a6aa8912 | 227 | |
0f8bd8de | 228 | r = bus_check_peercred(bus); |
a1da8583 TG |
229 | if (r < 0) |
230 | return r; | |
231 | ||
1cc6c93a | 232 | *_bus = TAKE_PTR(bus); |
0f8bd8de | 233 | |
a1da8583 TG |
234 | return 0; |
235 | } | |
236 | ||
266f3e26 | 237 | int bus_connect_user_systemd(sd_bus **_bus) { |
b1a4981a | 238 | _cleanup_(sd_bus_close_unrefp) sd_bus *bus = NULL; |
a6aa8912 | 239 | _cleanup_free_ char *ee = NULL; |
41dd15e4 LP |
240 | const char *e; |
241 | int r; | |
242 | ||
41dd15e4 LP |
243 | assert(_bus); |
244 | ||
245 | e = secure_getenv("XDG_RUNTIME_DIR"); | |
537220d9 | 246 | if (!e) |
266f3e26 | 247 | return sd_bus_default_user(_bus); |
537220d9 | 248 | |
a6aa8912 LP |
249 | ee = bus_address_escape(e); |
250 | if (!ee) | |
537220d9 | 251 | return -ENOMEM; |
41dd15e4 LP |
252 | |
253 | r = sd_bus_new(&bus); | |
254 | if (r < 0) | |
255 | return r; | |
256 | ||
605405c6 | 257 | bus->address = strjoin("unix:path=", ee, "/systemd/private"); |
a6aa8912 LP |
258 | if (!bus->address) |
259 | return -ENOMEM; | |
41dd15e4 LP |
260 | |
261 | r = sd_bus_start(bus); | |
262 | if (r < 0) | |
266f3e26 | 263 | return sd_bus_default_user(_bus); |
41dd15e4 LP |
264 | |
265 | r = bus_check_peercred(bus); | |
266 | if (r < 0) | |
267 | return r; | |
268 | ||
1cc6c93a | 269 | *_bus = TAKE_PTR(bus); |
41dd15e4 LP |
270 | |
271 | return 0; | |
272 | } | |
273 | ||
102b0214 YW |
274 | int bus_print_property_value(const char *name, const char *expected_value, bool only_value, const char *value) { |
275 | assert(name); | |
276 | ||
277 | if (expected_value && !streq_ptr(expected_value, value)) | |
278 | return 0; | |
279 | ||
280 | if (only_value) | |
281 | puts(value); | |
282 | else | |
283 | printf("%s=%s\n", name, value); | |
284 | ||
285 | return 0; | |
286 | } | |
287 | ||
288 | int bus_print_property_valuef(const char *name, const char *expected_value, bool only_value, const char *fmt, ...) { | |
eda19357 YW |
289 | va_list ap; |
290 | int r; | |
291 | ||
292 | assert(name); | |
293 | assert(fmt); | |
294 | ||
295 | if (expected_value) { | |
296 | _cleanup_free_ char *s = NULL; | |
297 | ||
298 | va_start(ap, fmt); | |
299 | r = vasprintf(&s, fmt, ap); | |
300 | va_end(ap); | |
301 | if (r < 0) | |
302 | return -ENOMEM; | |
303 | ||
304 | if (streq_ptr(expected_value, s)) { | |
305 | if (only_value) | |
306 | puts(s); | |
307 | else | |
308 | printf("%s=%s\n", name, s); | |
309 | } | |
310 | ||
311 | return 0; | |
312 | } | |
313 | ||
314 | if (!only_value) | |
315 | printf("%s=", name); | |
316 | va_start(ap, fmt); | |
317 | vprintf(fmt, ap); | |
318 | va_end(ap); | |
319 | puts(""); | |
320 | ||
321 | return 0; | |
322 | } | |
323 | ||
324 | static int bus_print_property(const char *name, const char *expected_value, sd_bus_message *m, bool value, bool all) { | |
a1da8583 TG |
325 | char type; |
326 | const char *contents; | |
9f6eb1cd | 327 | int r; |
a1da8583 TG |
328 | |
329 | assert(name); | |
07636114 | 330 | assert(m); |
a1da8583 | 331 | |
07636114 | 332 | r = sd_bus_message_peek_type(m, &type, &contents); |
9f6eb1cd KS |
333 | if (r < 0) |
334 | return r; | |
a1da8583 TG |
335 | |
336 | switch (type) { | |
337 | ||
338 | case SD_BUS_TYPE_STRING: { | |
339 | const char *s; | |
9f6eb1cd | 340 | |
07636114 | 341 | r = sd_bus_message_read_basic(m, type, &s); |
9f6eb1cd KS |
342 | if (r < 0) |
343 | return r; | |
a1da8583 | 344 | |
5993d46a ZJS |
345 | if (all || !isempty(s)) { |
346 | bool good; | |
347 | ||
348 | /* This property has a single value, so we need to take | |
349 | * care not to print a new line, everything else is OK. */ | |
350 | good = !strchr(s, '\n'); | |
102b0214 | 351 | bus_print_property_value(name, expected_value, value, good ? s : "[unprintable]"); |
5993d46a | 352 | } |
a1da8583 TG |
353 | |
354 | return 1; | |
355 | } | |
356 | ||
357 | case SD_BUS_TYPE_BOOLEAN: { | |
c2fa048c | 358 | int b; |
a1da8583 | 359 | |
07636114 | 360 | r = sd_bus_message_read_basic(m, type, &b); |
9f6eb1cd KS |
361 | if (r < 0) |
362 | return r; | |
363 | ||
eda19357 YW |
364 | if (expected_value && parse_boolean(expected_value) != b) |
365 | return 1; | |
a1da8583 | 366 | |
102b0214 | 367 | bus_print_property_value(name, NULL, value, yes_no(b)); |
a1da8583 TG |
368 | return 1; |
369 | } | |
370 | ||
371 | case SD_BUS_TYPE_UINT64: { | |
372 | uint64_t u; | |
373 | ||
07636114 | 374 | r = sd_bus_message_read_basic(m, type, &u); |
9f6eb1cd KS |
375 | if (r < 0) |
376 | return r; | |
a1da8583 TG |
377 | |
378 | /* Yes, heuristics! But we can change this check | |
379 | * should it turn out to not be sufficient */ | |
380 | ||
ead0adb1 YW |
381 | if (endswith(name, "Timestamp") || |
382 | STR_IN_SET(name, "NextElapseUSecRealtime", "LastTriggerUSec", "TimeUSec", "RTCTimeUSec")) { | |
4d9685be ZJS |
383 | char timestamp[FORMAT_TIMESTAMP_MAX]; |
384 | const char *t; | |
a1da8583 TG |
385 | |
386 | t = format_timestamp(timestamp, sizeof(timestamp), u); | |
387 | if (t || all) | |
102b0214 | 388 | bus_print_property_value(name, expected_value, value, strempty(t)); |
a1da8583 TG |
389 | |
390 | } else if (strstr(name, "USec")) { | |
391 | char timespan[FORMAT_TIMESPAN_MAX]; | |
392 | ||
eda19357 | 393 | (void) format_timespan(timespan, sizeof(timespan), u, 0); |
102b0214 | 394 | bus_print_property_value(name, expected_value, value, timespan); |
eda19357 | 395 | |
73186d53 DH |
396 | } else if (streq(name, "RestrictNamespaces")) { |
397 | _cleanup_free_ char *s = NULL; | |
ae978b9f | 398 | const char *result; |
73186d53 DH |
399 | |
400 | if ((u & NAMESPACE_FLAGS_ALL) == 0) | |
401 | result = "yes"; | |
0c21dafb | 402 | else if (FLAGS_SET(u, NAMESPACE_FLAGS_ALL)) |
73186d53 DH |
403 | result = "no"; |
404 | else { | |
86c2a9f1 | 405 | r = namespace_flags_to_string(u, &s); |
73186d53 DH |
406 | if (r < 0) |
407 | return r; | |
408 | ||
409 | result = s; | |
410 | } | |
411 | ||
102b0214 | 412 | bus_print_property_value(name, expected_value, value, result); |
21771f33 YW |
413 | |
414 | } else if (streq(name, "MountFlags")) { | |
ae978b9f | 415 | const char *result; |
21771f33 YW |
416 | |
417 | result = mount_propagation_flags_to_string(u); | |
418 | if (!result) | |
419 | return -EINVAL; | |
420 | ||
102b0214 | 421 | bus_print_property_value(name, expected_value, value, result); |
21771f33 | 422 | |
52610b02 YW |
423 | } else if (STR_IN_SET(name, "CapabilityBoundingSet", "AmbientCapabilities")) { |
424 | _cleanup_free_ char *s = NULL; | |
425 | ||
426 | r = capability_set_to_string_alloc(u, &s); | |
427 | if (r < 0) | |
428 | return r; | |
429 | ||
102b0214 | 430 | bus_print_property_value(name, expected_value, value, s); |
52610b02 | 431 | |
21771f33 YW |
432 | } else if ((STR_IN_SET(name, "CPUWeight", "StartupCPUWeight", "IOWeight", "StartupIOWeight") && u == CGROUP_WEIGHT_INVALID) || |
433 | (STR_IN_SET(name, "CPUShares", "StartupCPUShares") && u == CGROUP_CPU_SHARES_INVALID) || | |
434 | (STR_IN_SET(name, "BlockIOWeight", "StartupBlockIOWeight") && u == CGROUP_BLKIO_WEIGHT_INVALID) || | |
435 | (STR_IN_SET(name, "MemoryCurrent", "TasksCurrent") && u == (uint64_t) -1) || | |
436 | (endswith(name, "NSec") && u == (uint64_t) -1)) | |
437 | ||
102b0214 | 438 | bus_print_property_value(name, expected_value, value, "[not set]"); |
21771f33 | 439 | |
7e7223b3 | 440 | else if ((STR_IN_SET(name, "DefaultMemoryLow", "DefaultMemoryMin", "MemoryLow", "MemoryHigh", "MemoryMax", "MemorySwapMax", "MemoryLimit") && u == CGROUP_LIMIT_MAX) || |
21771f33 YW |
441 | (STR_IN_SET(name, "TasksMax", "DefaultTasksMax") && u == (uint64_t) -1) || |
442 | (startswith(name, "Limit") && u == (uint64_t) -1) || | |
443 | (startswith(name, "DefaultLimit") && u == (uint64_t) -1)) | |
444 | ||
102b0214 | 445 | bus_print_property_value(name, expected_value, value, "infinity"); |
56c6b690 YW |
446 | else if (STR_IN_SET(name, "IPIngressBytes", "IPIngressPackets", "IPEgressBytes", "IPEgressPackets") && u == (uint64_t) -1) |
447 | bus_print_property_value(name, expected_value, value, "[no data]"); | |
21771f33 | 448 | else |
102b0214 | 449 | bus_print_property_valuef(name, expected_value, value, "%"PRIu64, u); |
a1da8583 TG |
450 | |
451 | return 1; | |
452 | } | |
453 | ||
d7161865 DM |
454 | case SD_BUS_TYPE_INT64: { |
455 | int64_t i; | |
456 | ||
07636114 | 457 | r = sd_bus_message_read_basic(m, type, &i); |
d7161865 DM |
458 | if (r < 0) |
459 | return r; | |
460 | ||
102b0214 | 461 | bus_print_property_valuef(name, expected_value, value, "%"PRIi64, i); |
d7161865 DM |
462 | return 1; |
463 | } | |
464 | ||
a1da8583 TG |
465 | case SD_BUS_TYPE_UINT32: { |
466 | uint32_t u; | |
467 | ||
07636114 | 468 | r = sd_bus_message_read_basic(m, type, &u); |
9f6eb1cd KS |
469 | if (r < 0) |
470 | return r; | |
a1da8583 TG |
471 | |
472 | if (strstr(name, "UMask") || strstr(name, "Mode")) | |
102b0214 | 473 | bus_print_property_valuef(name, expected_value, value, "%04o", u); |
eda19357 | 474 | |
c533658a ZJS |
475 | else if (streq(name, "UID")) { |
476 | if (u == UID_INVALID) | |
102b0214 | 477 | bus_print_property_value(name, expected_value, value, "[not set]"); |
c533658a | 478 | else |
102b0214 | 479 | bus_print_property_valuef(name, expected_value, value, "%"PRIu32, u); |
c533658a ZJS |
480 | } else if (streq(name, "GID")) { |
481 | if (u == GID_INVALID) | |
102b0214 | 482 | bus_print_property_value(name, expected_value, value, "[not set]"); |
c533658a | 483 | else |
102b0214 | 484 | bus_print_property_valuef(name, expected_value, value, "%"PRIu32, u); |
c533658a | 485 | } else |
102b0214 | 486 | bus_print_property_valuef(name, expected_value, value, "%"PRIu32, u); |
a1da8583 TG |
487 | |
488 | return 1; | |
489 | } | |
490 | ||
491 | case SD_BUS_TYPE_INT32: { | |
492 | int32_t i; | |
493 | ||
07636114 | 494 | r = sd_bus_message_read_basic(m, type, &i); |
9f6eb1cd KS |
495 | if (r < 0) |
496 | return r; | |
a1da8583 | 497 | |
102b0214 | 498 | bus_print_property_valuef(name, expected_value, value, "%"PRIi32, i); |
a1da8583 TG |
499 | return 1; |
500 | } | |
501 | ||
502 | case SD_BUS_TYPE_DOUBLE: { | |
503 | double d; | |
504 | ||
07636114 | 505 | r = sd_bus_message_read_basic(m, type, &d); |
9f6eb1cd KS |
506 | if (r < 0) |
507 | return r; | |
a1da8583 | 508 | |
102b0214 | 509 | bus_print_property_valuef(name, expected_value, value, "%g", d); |
a1da8583 TG |
510 | return 1; |
511 | } | |
512 | ||
513 | case SD_BUS_TYPE_ARRAY: | |
a1da8583 | 514 | if (streq(contents, "s")) { |
261afec5 MAP |
515 | bool first = true; |
516 | const char *str; | |
a1da8583 | 517 | |
07636114 | 518 | r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, contents); |
9f6eb1cd KS |
519 | if (r < 0) |
520 | return r; | |
521 | ||
07636114 | 522 | while ((r = sd_bus_message_read_basic(m, SD_BUS_TYPE_STRING, &str)) > 0) { |
5993d46a ZJS |
523 | bool good; |
524 | ||
4f9a9105 | 525 | if (first && !value) |
261afec5 MAP |
526 | printf("%s=", name); |
527 | ||
ed88a900 | 528 | /* This property has multiple space-separated values, so |
ead6bd25 | 529 | * neither spaces nor newlines can be allowed in a value. */ |
5993d46a ZJS |
530 | good = str[strcspn(str, " \n")] == '\0'; |
531 | ||
532 | printf("%s%s", first ? "" : " ", good ? str : "[unprintable]"); | |
261afec5 MAP |
533 | |
534 | first = false; | |
535 | } | |
9f6eb1cd KS |
536 | if (r < 0) |
537 | return r; | |
a1da8583 | 538 | |
4f9a9105 | 539 | if (first && all && !value) |
a1da8583 | 540 | printf("%s=", name); |
261afec5 | 541 | if (!first || all) |
a1da8583 | 542 | puts(""); |
a1da8583 | 543 | |
07636114 | 544 | r = sd_bus_message_exit_container(m); |
9f6eb1cd KS |
545 | if (r < 0) |
546 | return r; | |
a1da8583 TG |
547 | |
548 | return 1; | |
549 | ||
550 | } else if (streq(contents, "y")) { | |
551 | const uint8_t *u; | |
552 | size_t n; | |
553 | ||
07636114 | 554 | r = sd_bus_message_read_array(m, SD_BUS_TYPE_BYTE, (const void**) &u, &n); |
9f6eb1cd KS |
555 | if (r < 0) |
556 | return r; | |
557 | ||
a1da8583 | 558 | if (all || n > 0) { |
14cb109d | 559 | unsigned i; |
a1da8583 | 560 | |
4f9a9105 ZJS |
561 | if (!value) |
562 | printf("%s=", name); | |
a1da8583 TG |
563 | |
564 | for (i = 0; i < n; i++) | |
565 | printf("%02x", u[i]); | |
566 | ||
567 | puts(""); | |
568 | } | |
569 | ||
570 | return 1; | |
571 | ||
572 | } else if (streq(contents, "u")) { | |
573 | uint32_t *u; | |
574 | size_t n; | |
575 | ||
07636114 | 576 | r = sd_bus_message_read_array(m, SD_BUS_TYPE_UINT32, (const void**) &u, &n); |
9f6eb1cd KS |
577 | if (r < 0) |
578 | return r; | |
579 | ||
a1da8583 | 580 | if (all || n > 0) { |
14cb109d | 581 | unsigned i; |
a1da8583 | 582 | |
4f9a9105 ZJS |
583 | if (!value) |
584 | printf("%s=", name); | |
a1da8583 TG |
585 | |
586 | for (i = 0; i < n; i++) | |
587 | printf("%08x", u[i]); | |
588 | ||
589 | puts(""); | |
590 | } | |
591 | ||
592 | return 1; | |
593 | } | |
594 | ||
595 | break; | |
596 | } | |
597 | ||
598 | return 0; | |
599 | } | |
d21ed1ea | 600 | |
07636114 YW |
601 | int bus_message_print_all_properties( |
602 | sd_bus_message *m, | |
603 | bus_message_print_t func, | |
604 | char **filter, | |
605 | bool value, | |
606 | bool all, | |
607 | Set **found_properties) { | |
ffc06c35 | 608 | |
07636114 | 609 | int r; |
9f6eb1cd | 610 | |
07636114 | 611 | assert(m); |
ffc06c35 | 612 | |
07636114 | 613 | r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "{sv}"); |
ffc06c35 KS |
614 | if (r < 0) |
615 | return r; | |
616 | ||
07636114 | 617 | while ((r = sd_bus_message_enter_container(m, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) { |
eda19357 YW |
618 | _cleanup_free_ char *name_with_equal = NULL; |
619 | const char *name, *contents, *expected_value = NULL; | |
ffc06c35 | 620 | |
07636114 | 621 | r = sd_bus_message_read_basic(m, SD_BUS_TYPE_STRING, &name); |
ffc06c35 KS |
622 | if (r < 0) |
623 | return r; | |
624 | ||
07636114 YW |
625 | if (found_properties) { |
626 | r = set_ensure_allocated(found_properties, &string_hash_ops); | |
627 | if (r < 0) | |
628 | return log_oom(); | |
629 | ||
630 | r = set_put(*found_properties, name); | |
0ceff906 | 631 | if (r < 0 && r != -EEXIST) |
07636114 YW |
632 | return log_oom(); |
633 | } | |
634 | ||
b910cc72 | 635 | name_with_equal = strjoin(name, "="); |
eda19357 YW |
636 | if (!name_with_equal) |
637 | return log_oom(); | |
638 | ||
639 | if (!filter || strv_find(filter, name) || | |
640 | (expected_value = strv_find_startswith(filter, name_with_equal))) { | |
07636114 | 641 | r = sd_bus_message_peek_type(m, NULL, &contents); |
9f6eb1cd KS |
642 | if (r < 0) |
643 | return r; | |
644 | ||
07636114 | 645 | r = sd_bus_message_enter_container(m, SD_BUS_TYPE_VARIANT, contents); |
9f6eb1cd KS |
646 | if (r < 0) |
647 | return r; | |
ffc06c35 | 648 | |
07636114 | 649 | if (func) |
eda19357 | 650 | r = func(name, expected_value, m, value, all); |
07636114 | 651 | if (!func || r == 0) |
eda19357 | 652 | r = bus_print_property(name, expected_value, m, value, all); |
9f6eb1cd KS |
653 | if (r < 0) |
654 | return r; | |
27e72d6b | 655 | if (r == 0) { |
eda19357 | 656 | if (all && !expected_value) |
27e72d6b SP |
657 | printf("%s=[unprintable]\n", name); |
658 | /* skip what we didn't read */ | |
07636114 | 659 | r = sd_bus_message_skip(m, contents); |
27e72d6b SP |
660 | if (r < 0) |
661 | return r; | |
662 | } | |
9f6eb1cd | 663 | |
07636114 | 664 | r = sd_bus_message_exit_container(m); |
9f6eb1cd KS |
665 | if (r < 0) |
666 | return r; | |
667 | } else { | |
07636114 | 668 | r = sd_bus_message_skip(m, "v"); |
9f6eb1cd KS |
669 | if (r < 0) |
670 | return r; | |
671 | } | |
672 | ||
07636114 | 673 | r = sd_bus_message_exit_container(m); |
ffc06c35 KS |
674 | if (r < 0) |
675 | return r; | |
9f6eb1cd KS |
676 | } |
677 | if (r < 0) | |
678 | return r; | |
ffc06c35 | 679 | |
07636114 | 680 | r = sd_bus_message_exit_container(m); |
9f6eb1cd KS |
681 | if (r < 0) |
682 | return r; | |
ffc06c35 | 683 | |
9f6eb1cd KS |
684 | return 0; |
685 | } | |
ffc06c35 | 686 | |
07636114 YW |
687 | int bus_print_all_properties( |
688 | sd_bus *bus, | |
689 | const char *dest, | |
690 | const char *path, | |
691 | bus_message_print_t func, | |
692 | char **filter, | |
693 | bool value, | |
694 | bool all, | |
695 | Set **found_properties) { | |
696 | ||
697 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; | |
698 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
699 | int r; | |
700 | ||
701 | assert(bus); | |
702 | assert(path); | |
703 | ||
704 | r = sd_bus_call_method(bus, | |
705 | dest, | |
706 | path, | |
707 | "org.freedesktop.DBus.Properties", | |
708 | "GetAll", | |
709 | &error, | |
710 | &reply, | |
711 | "s", ""); | |
712 | if (r < 0) | |
713 | return r; | |
714 | ||
715 | return bus_message_print_all_properties(reply, func, filter, value, all, found_properties); | |
716 | } | |
717 | ||
9f6eb1cd KS |
718 | int bus_map_id128(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) { |
719 | sd_id128_t *p = userdata; | |
720 | const void *v; | |
721 | size_t n; | |
722 | int r; | |
ffc06c35 | 723 | |
9f6eb1cd KS |
724 | r = sd_bus_message_read_array(m, SD_BUS_TYPE_BYTE, &v, &n); |
725 | if (r < 0) | |
726 | return r; | |
ffc06c35 | 727 | |
9f6eb1cd KS |
728 | if (n == 0) |
729 | *p = SD_ID128_NULL; | |
730 | else if (n == 16) | |
731 | memcpy((*p).bytes, v, n); | |
732 | else | |
733 | return -EINVAL; | |
ffc06c35 | 734 | |
9f6eb1cd KS |
735 | return 0; |
736 | } | |
ffc06c35 | 737 | |
a7e4861c | 738 | static int map_basic(sd_bus *bus, const char *member, sd_bus_message *m, unsigned flags, sd_bus_error *error, void *userdata) { |
9f6eb1cd KS |
739 | char type; |
740 | int r; | |
ffc06c35 | 741 | |
9f6eb1cd KS |
742 | r = sd_bus_message_peek_type(m, &type, NULL); |
743 | if (r < 0) | |
744 | return r; | |
ffc06c35 | 745 | |
9f6eb1cd | 746 | switch (type) { |
8b3b6f58 | 747 | |
16a8f172 YW |
748 | case SD_BUS_TYPE_STRING: |
749 | case SD_BUS_TYPE_OBJECT_PATH: { | |
f37f8a61 | 750 | const char **p = userdata; |
8b3b6f58 | 751 | const char *s; |
ffc06c35 | 752 | |
9f6eb1cd KS |
753 | r = sd_bus_message_read_basic(m, type, &s); |
754 | if (r < 0) | |
8b3b6f58 | 755 | return r; |
ffc06c35 | 756 | |
9f6eb1cd | 757 | if (isempty(s)) |
0b83b8a4 | 758 | s = NULL; |
ffc06c35 | 759 | |
a7e4861c | 760 | if (flags & BUS_MAP_STRDUP) |
f37f8a61 YW |
761 | return free_and_strdup((char **) userdata, s); |
762 | ||
763 | *p = s; | |
764 | return 0; | |
9f6eb1cd | 765 | } |
ffc06c35 | 766 | |
9f6eb1cd | 767 | case SD_BUS_TYPE_ARRAY: { |
7d6884b6 TA |
768 | _cleanup_strv_free_ char **l = NULL; |
769 | char ***p = userdata; | |
ffc06c35 | 770 | |
9f6eb1cd KS |
771 | r = bus_message_read_strv_extend(m, &l); |
772 | if (r < 0) | |
8b3b6f58 | 773 | return r; |
ffc06c35 | 774 | |
411975ce | 775 | return strv_extend_strv(p, l, false); |
9f6eb1cd | 776 | } |
ffc06c35 | 777 | |
9f6eb1cd | 778 | case SD_BUS_TYPE_BOOLEAN: { |
a7e4861c | 779 | int b; |
ffc06c35 | 780 | |
9f6eb1cd KS |
781 | r = sd_bus_message_read_basic(m, type, &b); |
782 | if (r < 0) | |
8b3b6f58 | 783 | return r; |
ffc06c35 | 784 | |
a7e4861c | 785 | if (flags & BUS_MAP_BOOLEAN_AS_BOOL) |
5d904a6a | 786 | *(bool*) userdata = b; |
a7e4861c | 787 | else |
5d904a6a | 788 | *(int*) userdata = b; |
a7e4861c | 789 | |
8b3b6f58 | 790 | return 0; |
9f6eb1cd | 791 | } |
ffc06c35 | 792 | |
bdf97b8a | 793 | case SD_BUS_TYPE_INT32: |
9f6eb1cd | 794 | case SD_BUS_TYPE_UINT32: { |
bdf97b8a | 795 | uint32_t u, *p = userdata; |
9f6eb1cd KS |
796 | |
797 | r = sd_bus_message_read_basic(m, type, &u); | |
798 | if (r < 0) | |
8b3b6f58 | 799 | return r; |
ffc06c35 | 800 | |
9f6eb1cd | 801 | *p = u; |
8b3b6f58 | 802 | return 0; |
9f6eb1cd KS |
803 | } |
804 | ||
bdf97b8a | 805 | case SD_BUS_TYPE_INT64: |
9f6eb1cd | 806 | case SD_BUS_TYPE_UINT64: { |
bdf97b8a | 807 | uint64_t t, *p = userdata; |
9f6eb1cd KS |
808 | |
809 | r = sd_bus_message_read_basic(m, type, &t); | |
810 | if (r < 0) | |
8b3b6f58 | 811 | return r; |
ffc06c35 | 812 | |
9f6eb1cd | 813 | *p = t; |
8b3b6f58 | 814 | return 0; |
9f6eb1cd KS |
815 | } |
816 | ||
52e045f9 | 817 | case SD_BUS_TYPE_DOUBLE: { |
8b3b6f58 | 818 | double d, *p = userdata; |
52e045f9 SS |
819 | |
820 | r = sd_bus_message_read_basic(m, type, &d); | |
821 | if (r < 0) | |
8b3b6f58 | 822 | return r; |
52e045f9 SS |
823 | |
824 | *p = d; | |
8b3b6f58 LP |
825 | return 0; |
826 | }} | |
52e045f9 | 827 | |
8b3b6f58 | 828 | return -EOPNOTSUPP; |
9f6eb1cd KS |
829 | } |
830 | ||
fe506d56 LP |
831 | int bus_message_map_all_properties( |
832 | sd_bus_message *m, | |
833 | const struct bus_properties_map *map, | |
a7e4861c | 834 | unsigned flags, |
f9e0eefc | 835 | sd_bus_error *error, |
fe506d56 LP |
836 | void *userdata) { |
837 | ||
9f6eb1cd KS |
838 | int r; |
839 | ||
aae2b488 | 840 | assert(m); |
9f6eb1cd KS |
841 | assert(map); |
842 | ||
9f6eb1cd KS |
843 | r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "{sv}"); |
844 | if (r < 0) | |
845 | return r; | |
846 | ||
847 | while ((r = sd_bus_message_enter_container(m, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) { | |
848 | const struct bus_properties_map *prop; | |
849 | const char *member; | |
850 | const char *contents; | |
851 | void *v; | |
852 | unsigned i; | |
853 | ||
854 | r = sd_bus_message_read_basic(m, SD_BUS_TYPE_STRING, &member); | |
ffc06c35 KS |
855 | if (r < 0) |
856 | return r; | |
857 | ||
9f6eb1cd KS |
858 | for (i = 0, prop = NULL; map[i].member; i++) |
859 | if (streq(map[i].member, member)) { | |
860 | prop = &map[i]; | |
861 | break; | |
862 | } | |
863 | ||
864 | if (prop) { | |
865 | r = sd_bus_message_peek_type(m, NULL, &contents); | |
866 | if (r < 0) | |
867 | return r; | |
868 | ||
869 | r = sd_bus_message_enter_container(m, SD_BUS_TYPE_VARIANT, contents); | |
870 | if (r < 0) | |
871 | return r; | |
872 | ||
873 | v = (uint8_t *)userdata + prop->offset; | |
27e72d6b | 874 | if (map[i].set) |
f9e0eefc | 875 | r = prop->set(sd_bus_message_get_bus(m), member, m, error, v); |
9f6eb1cd | 876 | else |
a7e4861c | 877 | r = map_basic(sd_bus_message_get_bus(m), member, m, flags, error, v); |
2b49a470 TA |
878 | if (r < 0) |
879 | return r; | |
9f6eb1cd KS |
880 | |
881 | r = sd_bus_message_exit_container(m); | |
882 | if (r < 0) | |
883 | return r; | |
884 | } else { | |
885 | r = sd_bus_message_skip(m, "v"); | |
886 | if (r < 0) | |
6c1508b8 | 887 | return r; |
9f6eb1cd KS |
888 | } |
889 | ||
ffc06c35 KS |
890 | r = sd_bus_message_exit_container(m); |
891 | if (r < 0) | |
892 | return r; | |
893 | } | |
fe506d56 LP |
894 | if (r < 0) |
895 | return r; | |
ffc06c35 | 896 | |
aae2b488 DH |
897 | return sd_bus_message_exit_container(m); |
898 | } | |
899 | ||
fe506d56 LP |
900 | int bus_map_all_properties( |
901 | sd_bus *bus, | |
902 | const char *destination, | |
903 | const char *path, | |
904 | const struct bus_properties_map *map, | |
a7e4861c | 905 | unsigned flags, |
f9e0eefc | 906 | sd_bus_error *error, |
f37f8a61 | 907 | sd_bus_message **reply, |
fe506d56 LP |
908 | void *userdata) { |
909 | ||
4afd3348 | 910 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL; |
aae2b488 DH |
911 | int r; |
912 | ||
913 | assert(bus); | |
914 | assert(destination); | |
915 | assert(path); | |
916 | assert(map); | |
a7e4861c | 917 | assert(reply || (flags & BUS_MAP_STRDUP)); |
aae2b488 DH |
918 | |
919 | r = sd_bus_call_method( | |
920 | bus, | |
921 | destination, | |
922 | path, | |
923 | "org.freedesktop.DBus.Properties", | |
924 | "GetAll", | |
f9e0eefc | 925 | error, |
aae2b488 DH |
926 | &m, |
927 | "s", ""); | |
928 | if (r < 0) | |
929 | return r; | |
930 | ||
a7e4861c | 931 | r = bus_message_map_all_properties(m, map, flags, error, userdata); |
f37f8a61 YW |
932 | if (r < 0) |
933 | return r; | |
934 | ||
935 | if (reply) | |
936 | *reply = sd_bus_message_ref(m); | |
937 | ||
938 | return r; | |
ffc06c35 KS |
939 | } |
940 | ||
38303498 | 941 | int bus_connect_transport(BusTransport transport, const char *host, bool user, sd_bus **ret) { |
b1a4981a | 942 | _cleanup_(sd_bus_close_unrefp) sd_bus *bus = NULL; |
d21ed1ea LP |
943 | int r; |
944 | ||
945 | assert(transport >= 0); | |
946 | assert(transport < _BUS_TRANSPORT_MAX); | |
38303498 | 947 | assert(ret); |
d21ed1ea LP |
948 | |
949 | assert_return((transport == BUS_TRANSPORT_LOCAL) == !host, -EINVAL); | |
15411c0c | 950 | assert_return(transport == BUS_TRANSPORT_LOCAL || !user, -EOPNOTSUPP); |
d21ed1ea LP |
951 | |
952 | switch (transport) { | |
953 | ||
954 | case BUS_TRANSPORT_LOCAL: | |
955 | if (user) | |
38303498 | 956 | r = sd_bus_default_user(&bus); |
fb507898 YW |
957 | else { |
958 | if (sd_booted() <= 0) { | |
959 | /* Print a friendly message when the local system is actually not running systemd as PID 1. */ | |
960 | log_error("System has not been booted with systemd as init system (PID 1). Can't operate."); | |
d21ed1ea | 961 | |
fb507898 YW |
962 | return -EHOSTDOWN; |
963 | } | |
964 | r = sd_bus_default_system(&bus); | |
965 | } | |
d21ed1ea LP |
966 | break; |
967 | ||
968 | case BUS_TRANSPORT_REMOTE: | |
38303498 | 969 | r = sd_bus_open_system_remote(&bus, host); |
41dd15e4 LP |
970 | break; |
971 | ||
de33fc62 | 972 | case BUS_TRANSPORT_MACHINE: |
38303498 | 973 | r = sd_bus_open_system_machine(&bus, host); |
41dd15e4 LP |
974 | break; |
975 | ||
976 | default: | |
977 | assert_not_reached("Hmm, unknown transport type."); | |
978 | } | |
38303498 LP |
979 | if (r < 0) |
980 | return r; | |
41dd15e4 | 981 | |
38303498 LP |
982 | r = sd_bus_set_exit_on_disconnect(bus, true); |
983 | if (r < 0) | |
984 | return r; | |
985 | ||
1cc6c93a | 986 | *ret = TAKE_PTR(bus); |
38303498 LP |
987 | |
988 | return 0; | |
41dd15e4 LP |
989 | } |
990 | ||
266f3e26 | 991 | int bus_connect_transport_systemd(BusTransport transport, const char *host, bool user, sd_bus **bus) { |
41dd15e4 LP |
992 | int r; |
993 | ||
994 | assert(transport >= 0); | |
995 | assert(transport < _BUS_TRANSPORT_MAX); | |
996 | assert(bus); | |
997 | ||
998 | assert_return((transport == BUS_TRANSPORT_LOCAL) == !host, -EINVAL); | |
15411c0c | 999 | assert_return(transport == BUS_TRANSPORT_LOCAL || !user, -EOPNOTSUPP); |
41dd15e4 LP |
1000 | |
1001 | switch (transport) { | |
1002 | ||
1003 | case BUS_TRANSPORT_LOCAL: | |
1004 | if (user) | |
266f3e26 | 1005 | r = bus_connect_user_systemd(bus); |
fb507898 | 1006 | else { |
baaa35ad | 1007 | if (sd_booted() <= 0) |
fb507898 | 1008 | /* Print a friendly message when the local system is actually not running systemd as PID 1. */ |
baaa35ad ZJS |
1009 | return log_error_errno(SYNTHETIC_ERRNO(EHOSTDOWN), |
1010 | "System has not been booted with systemd as init system (PID 1). Can't operate."); | |
fb507898 YW |
1011 | r = bus_connect_system_systemd(bus); |
1012 | } | |
41dd15e4 LP |
1013 | break; |
1014 | ||
1015 | case BUS_TRANSPORT_REMOTE: | |
3db729cb | 1016 | r = sd_bus_open_system_remote(bus, host); |
d21ed1ea LP |
1017 | break; |
1018 | ||
de33fc62 LP |
1019 | case BUS_TRANSPORT_MACHINE: |
1020 | r = sd_bus_open_system_machine(bus, host); | |
d21ed1ea LP |
1021 | break; |
1022 | ||
1023 | default: | |
1024 | assert_not_reached("Hmm, unknown transport type."); | |
1025 | } | |
1026 | ||
1027 | return r; | |
1028 | } | |
e6504030 LP |
1029 | |
1030 | int bus_property_get_bool( | |
1031 | sd_bus *bus, | |
1032 | const char *path, | |
1033 | const char *interface, | |
1034 | const char *property, | |
1035 | sd_bus_message *reply, | |
ebcf1f97 LP |
1036 | void *userdata, |
1037 | sd_bus_error *error) { | |
e6504030 LP |
1038 | |
1039 | int b = *(bool*) userdata; | |
1040 | ||
1041 | return sd_bus_message_append_basic(reply, 'b', &b); | |
1042 | } | |
1043 | ||
43ce15ac JK |
1044 | int bus_property_set_bool( |
1045 | sd_bus *bus, | |
1046 | const char *path, | |
1047 | const char *interface, | |
1048 | const char *property, | |
1049 | sd_bus_message *value, | |
1050 | void *userdata, | |
1051 | sd_bus_error *error) { | |
1052 | ||
1053 | int b, r; | |
1054 | ||
1055 | r = sd_bus_message_read(value, "b", &b); | |
1056 | if (r < 0) | |
1057 | return r; | |
1058 | ||
5d904a6a | 1059 | *(bool*) userdata = b; |
43ce15ac JK |
1060 | return 0; |
1061 | } | |
1062 | ||
766c94ad LP |
1063 | int bus_property_get_id128( |
1064 | sd_bus *bus, | |
1065 | const char *path, | |
1066 | const char *interface, | |
1067 | const char *property, | |
1068 | sd_bus_message *reply, | |
1069 | void *userdata, | |
1070 | sd_bus_error *error) { | |
1071 | ||
1072 | sd_id128_t *id = userdata; | |
1073 | ||
1074 | if (sd_id128_is_null(*id)) /* Add an empty array if the ID is zero */ | |
1075 | return sd_bus_message_append(reply, "ay", 0); | |
1076 | else | |
4b58153d | 1077 | return sd_bus_message_append_array(reply, 'y', id->bytes, 16); |
766c94ad LP |
1078 | } |
1079 | ||
718db961 LP |
1080 | #if __SIZEOF_SIZE_T__ != 8 |
1081 | int bus_property_get_size( | |
e6504030 LP |
1082 | sd_bus *bus, |
1083 | const char *path, | |
1084 | const char *interface, | |
1085 | const char *property, | |
1086 | sd_bus_message *reply, | |
ebcf1f97 LP |
1087 | void *userdata, |
1088 | sd_bus_error *error) { | |
e6504030 | 1089 | |
718db961 | 1090 | uint64_t sz = *(size_t*) userdata; |
e6504030 | 1091 | |
718db961 | 1092 | return sd_bus_message_append_basic(reply, 't', &sz); |
e6504030 | 1093 | } |
718db961 LP |
1094 | #endif |
1095 | ||
1096 | #if __SIZEOF_LONG__ != 8 | |
1097 | int bus_property_get_long( | |
1098 | sd_bus *bus, | |
1099 | const char *path, | |
1100 | const char *interface, | |
1101 | const char *property, | |
1102 | sd_bus_message *reply, | |
ebcf1f97 LP |
1103 | void *userdata, |
1104 | sd_bus_error *error) { | |
718db961 LP |
1105 | |
1106 | int64_t l = *(long*) userdata; | |
1107 | ||
1108 | return sd_bus_message_append_basic(reply, 'x', &l); | |
1109 | } | |
1110 | ||
1111 | int bus_property_get_ulong( | |
1112 | sd_bus *bus, | |
1113 | const char *path, | |
1114 | const char *interface, | |
1115 | const char *property, | |
1116 | sd_bus_message *reply, | |
ebcf1f97 LP |
1117 | void *userdata, |
1118 | sd_bus_error *error) { | |
718db961 LP |
1119 | |
1120 | uint64_t ul = *(unsigned long*) userdata; | |
1121 | ||
1122 | return sd_bus_message_append_basic(reply, 't', &ul); | |
1123 | } | |
1124 | #endif | |
5b30bef8 | 1125 | |
98a4c30b DH |
1126 | /** |
1127 | * bus_path_encode_unique() - encode unique object path | |
1128 | * @b: bus connection or NULL | |
1129 | * @prefix: object path prefix | |
1130 | * @sender_id: unique-name of client, or NULL | |
1131 | * @external_id: external ID to be chosen by client, or NULL | |
1132 | * @ret_path: storage for encoded object path pointer | |
1133 | * | |
1134 | * Whenever we provide a bus API that allows clients to create and manage | |
1135 | * server-side objects, we need to provide a unique name for these objects. If | |
1136 | * we let the server choose the name, we suffer from a race condition: If a | |
1137 | * client creates an object asynchronously, it cannot destroy that object until | |
1138 | * it received the method reply. It cannot know the name of the new object, | |
1139 | * thus, it cannot destroy it. Furthermore, it enforces a round-trip. | |
1140 | * | |
1141 | * Therefore, many APIs allow the client to choose the unique name for newly | |
1142 | * created objects. There're two problems to solve, though: | |
1143 | * 1) Object names are usually defined via dbus object paths, which are | |
1144 | * usually globally namespaced. Therefore, multiple clients must be able | |
1145 | * to choose unique object names without interference. | |
1146 | * 2) If multiple libraries share the same bus connection, they must be | |
1147 | * able to choose unique object names without interference. | |
1148 | * The first problem is solved easily by prefixing a name with the | |
1149 | * unique-bus-name of a connection. The server side must enforce this and | |
1150 | * reject any other name. The second problem is solved by providing unique | |
1151 | * suffixes from within sd-bus. | |
1152 | * | |
1153 | * This helper allows clients to create unique object-paths. It uses the | |
1154 | * template '/prefix/sender_id/external_id' and returns the new path in | |
1155 | * @ret_path (must be freed by the caller). | |
1156 | * If @sender_id is NULL, the unique-name of @b is used. If @external_id is | |
1157 | * NULL, this function allocates a unique suffix via @b (by requesting a new | |
1158 | * cookie). If both @sender_id and @external_id are given, @b can be passed as | |
1159 | * NULL. | |
1160 | * | |
1161 | * Returns: 0 on success, negative error code on failure. | |
1162 | */ | |
1163 | int bus_path_encode_unique(sd_bus *b, const char *prefix, const char *sender_id, const char *external_id, char **ret_path) { | |
1164 | _cleanup_free_ char *sender_label = NULL, *external_label = NULL; | |
1165 | char external_buf[DECIMAL_STR_MAX(uint64_t)], *p; | |
1166 | int r; | |
1167 | ||
1168 | assert_return(b || (sender_id && external_id), -EINVAL); | |
1169 | assert_return(object_path_is_valid(prefix), -EINVAL); | |
1170 | assert_return(ret_path, -EINVAL); | |
1171 | ||
1172 | if (!sender_id) { | |
1173 | r = sd_bus_get_unique_name(b, &sender_id); | |
1174 | if (r < 0) | |
1175 | return r; | |
1176 | } | |
1177 | ||
1178 | if (!external_id) { | |
1179 | xsprintf(external_buf, "%"PRIu64, ++b->cookie); | |
1180 | external_id = external_buf; | |
1181 | } | |
1182 | ||
1183 | sender_label = bus_label_escape(sender_id); | |
1184 | if (!sender_label) | |
1185 | return -ENOMEM; | |
1186 | ||
1187 | external_label = bus_label_escape(external_id); | |
1188 | if (!external_label) | |
1189 | return -ENOMEM; | |
1190 | ||
657ee2d8 | 1191 | p = path_join(prefix, sender_label, external_label); |
98a4c30b DH |
1192 | if (!p) |
1193 | return -ENOMEM; | |
1194 | ||
1195 | *ret_path = p; | |
1196 | return 0; | |
1197 | } | |
1198 | ||
1199 | /** | |
1200 | * bus_path_decode_unique() - decode unique object path | |
1201 | * @path: object path to decode | |
1202 | * @prefix: object path prefix | |
1203 | * @ret_sender: output parameter for sender-id label | |
1204 | * @ret_external: output parameter for external-id label | |
1205 | * | |
1206 | * This does the reverse of bus_path_encode_unique() (see its description for | |
1207 | * details). Both trailing labels, sender-id and external-id, are unescaped and | |
1208 | * returned in the given output parameters (the caller must free them). | |
1209 | * | |
1210 | * Note that this function returns 0 if the path does not match the template | |
1211 | * (see bus_path_encode_unique()), 1 if it matched. | |
1212 | * | |
1213 | * Returns: Negative error code on failure, 0 if the given object path does not | |
1214 | * match the template (return parameters are set to NULL), 1 if it was | |
1215 | * parsed successfully (return parameters contain allocated labels). | |
1216 | */ | |
1217 | int bus_path_decode_unique(const char *path, const char *prefix, char **ret_sender, char **ret_external) { | |
1218 | const char *p, *q; | |
1219 | char *sender, *external; | |
1220 | ||
1221 | assert(object_path_is_valid(path)); | |
1222 | assert(object_path_is_valid(prefix)); | |
1223 | assert(ret_sender); | |
1224 | assert(ret_external); | |
1225 | ||
1226 | p = object_path_startswith(path, prefix); | |
1227 | if (!p) { | |
1228 | *ret_sender = NULL; | |
1229 | *ret_external = NULL; | |
1230 | return 0; | |
1231 | } | |
1232 | ||
1233 | q = strchr(p, '/'); | |
1234 | if (!q) { | |
1235 | *ret_sender = NULL; | |
1236 | *ret_external = NULL; | |
1237 | return 0; | |
1238 | } | |
1239 | ||
1240 | sender = bus_label_unescape_n(p, q - p); | |
1241 | external = bus_label_unescape(q + 1); | |
1242 | if (!sender || !external) { | |
1243 | free(sender); | |
1244 | free(external); | |
1245 | return -ENOMEM; | |
1246 | } | |
1247 | ||
1248 | *ret_sender = sender; | |
1249 | *ret_external = external; | |
1250 | return 1; | |
1251 | } | |
057171ef | 1252 | |
c9d031c3 EV |
1253 | int bus_property_get_rlimit( |
1254 | sd_bus *bus, | |
1255 | const char *path, | |
1256 | const char *interface, | |
1257 | const char *property, | |
1258 | sd_bus_message *reply, | |
1259 | void *userdata, | |
1260 | sd_bus_error *error) { | |
1261 | ||
6550c24c | 1262 | const char *is_soft; |
c9d031c3 EV |
1263 | struct rlimit *rl; |
1264 | uint64_t u; | |
1265 | rlim_t x; | |
1266 | ||
1267 | assert(bus); | |
1268 | assert(reply); | |
1269 | assert(userdata); | |
1270 | ||
147f6858 | 1271 | is_soft = endswith(property, "Soft"); |
6550c24c | 1272 | |
c9d031c3 EV |
1273 | rl = *(struct rlimit**) userdata; |
1274 | if (rl) | |
147f6858 | 1275 | x = is_soft ? rl->rlim_cur : rl->rlim_max; |
c9d031c3 EV |
1276 | else { |
1277 | struct rlimit buf = {}; | |
6550c24c | 1278 | const char *s, *p; |
c9d031c3 | 1279 | int z; |
147f6858 | 1280 | |
6550c24c | 1281 | /* Chop off "Soft" suffix */ |
147f6858 | 1282 | s = is_soft ? strndupa(property, is_soft - property) : property; |
c9d031c3 | 1283 | |
6550c24c LP |
1284 | /* Skip over any prefix, such as "Default" */ |
1285 | assert_se(p = strstr(s, "Limit")); | |
1286 | ||
1287 | z = rlimit_from_string(p + 5); | |
c9d031c3 EV |
1288 | assert(z >= 0); |
1289 | ||
6550c24c | 1290 | (void) getrlimit(z, &buf); |
147f6858 | 1291 | x = is_soft ? buf.rlim_cur : buf.rlim_max; |
c9d031c3 EV |
1292 | } |
1293 | ||
6550c24c LP |
1294 | /* rlim_t might have different sizes, let's map RLIMIT_INFINITY to (uint64_t) -1, so that it is the same on all |
1295 | * archs */ | |
c9d031c3 EV |
1296 | u = x == RLIM_INFINITY ? (uint64_t) -1 : (uint64_t) x; |
1297 | ||
1298 | return sd_bus_message_append(reply, "t", u); | |
1299 | } | |
984794ba LP |
1300 | |
1301 | int bus_track_add_name_many(sd_bus_track *t, char **l) { | |
1302 | int r = 0; | |
1303 | char **i; | |
1304 | ||
1305 | assert(t); | |
1306 | ||
1307 | /* Continues adding after failure, and returns the first failure. */ | |
1308 | ||
1309 | STRV_FOREACH(i, l) { | |
1310 | int k; | |
1311 | ||
1312 | k = sd_bus_track_add_name(t, *i); | |
1313 | if (k < 0 && r >= 0) | |
1314 | r = k; | |
1315 | } | |
1316 | ||
1317 | return r; | |
1318 | } | |
d7afd945 | 1319 | |
0ddf50ff | 1320 | int bus_open_system_watch_bind_with_description(sd_bus **ret, const char *description) { |
b1a4981a | 1321 | _cleanup_(sd_bus_close_unrefp) sd_bus *bus = NULL; |
d7afd945 LP |
1322 | const char *e; |
1323 | int r; | |
1324 | ||
1325 | assert(ret); | |
1326 | ||
61252bae ZJS |
1327 | /* Match like sd_bus_open_system(), but with the "watch_bind" feature and the Connected() signal |
1328 | * turned on. */ | |
d7afd945 LP |
1329 | |
1330 | r = sd_bus_new(&bus); | |
1331 | if (r < 0) | |
1332 | return r; | |
1333 | ||
0ddf50ff YW |
1334 | if (description) { |
1335 | r = sd_bus_set_description(bus, description); | |
1336 | if (r < 0) | |
1337 | return r; | |
1338 | } | |
1339 | ||
d7afd945 LP |
1340 | e = secure_getenv("DBUS_SYSTEM_BUS_ADDRESS"); |
1341 | if (!e) | |
1342 | e = DEFAULT_SYSTEM_BUS_ADDRESS; | |
1343 | ||
1344 | r = sd_bus_set_address(bus, e); | |
1345 | if (r < 0) | |
1346 | return r; | |
1347 | ||
1348 | r = sd_bus_set_bus_client(bus, true); | |
1349 | if (r < 0) | |
1350 | return r; | |
1351 | ||
d7afd945 LP |
1352 | r = sd_bus_negotiate_creds(bus, true, SD_BUS_CREDS_UID|SD_BUS_CREDS_EUID|SD_BUS_CREDS_EFFECTIVE_CAPS); |
1353 | if (r < 0) | |
1354 | return r; | |
1355 | ||
1356 | r = sd_bus_set_watch_bind(bus, true); | |
1357 | if (r < 0) | |
1358 | return r; | |
1359 | ||
1360 | r = sd_bus_set_connected_signal(bus, true); | |
1361 | if (r < 0) | |
1362 | return r; | |
1363 | ||
1364 | r = sd_bus_start(bus); | |
1365 | if (r < 0) | |
1366 | return r; | |
1367 | ||
1cc6c93a | 1368 | *ret = TAKE_PTR(bus); |
d7afd945 LP |
1369 | |
1370 | return 0; | |
1371 | } | |
906cb2eb | 1372 | |
19017acb LP |
1373 | int bus_reply_pair_array(sd_bus_message *m, char **l) { |
1374 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; | |
1375 | char **k, **v; | |
1376 | int r; | |
1377 | ||
1378 | assert(m); | |
1379 | ||
61252bae ZJS |
1380 | /* Reply to the specified message with a message containing a dictionary put together from the |
1381 | * specified strv */ | |
19017acb LP |
1382 | |
1383 | r = sd_bus_message_new_method_return(m, &reply); | |
1384 | if (r < 0) | |
1385 | return r; | |
1386 | ||
1387 | r = sd_bus_message_open_container(reply, 'a', "{ss}"); | |
1388 | if (r < 0) | |
1389 | return r; | |
1390 | ||
1391 | STRV_FOREACH_PAIR(k, v, l) { | |
1392 | r = sd_bus_message_append(reply, "{ss}", *k, *v); | |
1393 | if (r < 0) | |
1394 | return r; | |
1395 | } | |
1396 | ||
1397 | r = sd_bus_message_close_container(reply); | |
1398 | if (r < 0) | |
1399 | return r; | |
1400 | ||
1401 | return sd_bus_send(NULL, reply, NULL); | |
1402 | } | |
2a66c2a1 LP |
1403 | |
1404 | static void bus_message_unref_wrapper(void *m) { | |
1405 | sd_bus_message_unref(m); | |
1406 | } | |
1407 | ||
1408 | const struct hash_ops bus_message_hash_ops = { | |
1409 | .hash = trivial_hash_func, | |
1410 | .compare = trivial_compare_func, | |
1411 | .free_value = bus_message_unref_wrapper, | |
1412 | }; |