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bus-proxy: allow empty arguments to UpdateActivationEnvironment()
[thirdparty/systemd.git] / src / libsystemd / sd-bus / busctl.c
1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
2
3 /***
4 This file is part of systemd.
5
6 Copyright 2013 Lennart Poettering
7
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
12
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
17
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
20 ***/
21
22 #include <getopt.h>
23
24 #include "strv.h"
25 #include "util.h"
26 #include "log.h"
27 #include "build.h"
28 #include "pager.h"
29 #include "path-util.h"
30 #include "set.h"
31
32 #include "sd-bus.h"
33 #include "bus-internal.h"
34 #include "bus-util.h"
35 #include "bus-dump.h"
36 #include "bus-signature.h"
37 #include "bus-type.h"
38 #include "busctl-introspect.h"
39 #include "terminal-util.h"
40
41 static bool arg_no_pager = false;
42 static bool arg_legend = true;
43 static char *arg_address = NULL;
44 static bool arg_unique = false;
45 static bool arg_acquired = false;
46 static bool arg_activatable = false;
47 static bool arg_show_machine = false;
48 static char **arg_matches = NULL;
49 static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
50 static char *arg_host = NULL;
51 static bool arg_user = false;
52 static size_t arg_snaplen = 4096;
53 static bool arg_list = false;
54 static bool arg_quiet = false;
55 static bool arg_verbose = false;
56 static bool arg_expect_reply = true;
57 static bool arg_auto_start = true;
58 static bool arg_allow_interactive_authorization = true;
59 static bool arg_augment_creds = true;
60 static usec_t arg_timeout = 0;
61
62 static void pager_open_if_enabled(void) {
63
64 /* Cache result before we open the pager */
65 if (arg_no_pager)
66 return;
67
68 pager_open(false);
69 }
70
71 #define NAME_IS_ACQUIRED INT_TO_PTR(1)
72 #define NAME_IS_ACTIVATABLE INT_TO_PTR(2)
73
74 static int list_bus_names(sd_bus *bus, char **argv) {
75 _cleanup_strv_free_ char **acquired = NULL, **activatable = NULL;
76 _cleanup_free_ char **merged = NULL;
77 _cleanup_hashmap_free_ Hashmap *names = NULL;
78 char **i;
79 int r;
80 size_t max_i = 0;
81 unsigned n = 0;
82 void *v;
83 char *k;
84 Iterator iterator;
85
86 assert(bus);
87
88 if (!arg_unique && !arg_acquired && !arg_activatable)
89 arg_unique = arg_acquired = arg_activatable = true;
90
91 r = sd_bus_list_names(bus, (arg_acquired || arg_unique) ? &acquired : NULL, arg_activatable ? &activatable : NULL);
92 if (r < 0)
93 return log_error_errno(r, "Failed to list names: %m");
94
95 pager_open_if_enabled();
96
97 names = hashmap_new(&string_hash_ops);
98 if (!names)
99 return log_oom();
100
101 STRV_FOREACH(i, acquired) {
102 max_i = MAX(max_i, strlen(*i));
103
104 r = hashmap_put(names, *i, NAME_IS_ACQUIRED);
105 if (r < 0)
106 return log_error_errno(r, "Failed to add to hashmap: %m");
107 }
108
109 STRV_FOREACH(i, activatable) {
110 max_i = MAX(max_i, strlen(*i));
111
112 r = hashmap_put(names, *i, NAME_IS_ACTIVATABLE);
113 if (r < 0 && r != -EEXIST)
114 return log_error_errno(r, "Failed to add to hashmap: %m");
115 }
116
117 merged = new(char*, hashmap_size(names) + 1);
118 HASHMAP_FOREACH_KEY(v, k, names, iterator)
119 merged[n++] = k;
120
121 merged[n] = NULL;
122 strv_sort(merged);
123
124 if (arg_legend) {
125 printf("%-*s %*s %-*s %-*s %-*s %-*s %-*s %-*s",
126 (int) max_i, "NAME", 10, "PID", 15, "PROCESS", 16, "USER", 13, "CONNECTION", 25, "UNIT", 10, "SESSION", 19, "DESCRIPTION");
127
128 if (arg_show_machine)
129 puts(" MACHINE");
130 else
131 putchar('\n');
132 }
133
134 STRV_FOREACH(i, merged) {
135 _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
136 sd_id128_t mid;
137
138 if (hashmap_get(names, *i) == NAME_IS_ACTIVATABLE) {
139 /* Activatable */
140
141 printf("%-*s", (int) max_i, *i);
142 printf(" - - - (activatable) - - ");
143 if (arg_show_machine)
144 puts(" -");
145 else
146 putchar('\n');
147 continue;
148
149 }
150
151 if (!arg_unique && (*i)[0] == ':')
152 continue;
153
154 if (!arg_acquired && (*i)[0] != ':')
155 continue;
156
157 printf("%-*s", (int) max_i, *i);
158
159 r = sd_bus_get_name_creds(
160 bus, *i,
161 (arg_augment_creds ? SD_BUS_CREDS_AUGMENT : 0) |
162 SD_BUS_CREDS_EUID|SD_BUS_CREDS_PID|SD_BUS_CREDS_COMM|
163 SD_BUS_CREDS_UNIQUE_NAME|SD_BUS_CREDS_UNIT|SD_BUS_CREDS_SESSION|
164 SD_BUS_CREDS_DESCRIPTION, &creds);
165 if (r >= 0) {
166 const char *unique, *session, *unit, *cn;
167 pid_t pid;
168 uid_t uid;
169
170 r = sd_bus_creds_get_pid(creds, &pid);
171 if (r >= 0) {
172 const char *comm = NULL;
173
174 sd_bus_creds_get_comm(creds, &comm);
175
176 printf(" %10lu %-15s", (unsigned long) pid, strna(comm));
177 } else
178 fputs(" - - ", stdout);
179
180 r = sd_bus_creds_get_euid(creds, &uid);
181 if (r >= 0) {
182 _cleanup_free_ char *u = NULL;
183
184 u = uid_to_name(uid);
185 if (!u)
186 return log_oom();
187
188 if (strlen(u) > 16)
189 u[16] = 0;
190
191 printf(" %-16s", u);
192 } else
193 fputs(" - ", stdout);
194
195 r = sd_bus_creds_get_unique_name(creds, &unique);
196 if (r >= 0)
197 printf(" %-13s", unique);
198 else
199 fputs(" - ", stdout);
200
201 r = sd_bus_creds_get_unit(creds, &unit);
202 if (r >= 0) {
203 _cleanup_free_ char *e;
204
205 e = ellipsize(unit, 25, 100);
206 if (!e)
207 return log_oom();
208
209 printf(" %-25s", e);
210 } else
211 fputs(" - ", stdout);
212
213 r = sd_bus_creds_get_session(creds, &session);
214 if (r >= 0)
215 printf(" %-10s", session);
216 else
217 fputs(" - ", stdout);
218
219 r = sd_bus_creds_get_description(creds, &cn);
220 if (r >= 0)
221 printf(" %-19s", cn);
222 else
223 fputs(" - ", stdout);
224
225 } else
226 printf(" - - - - - - - ");
227
228 if (arg_show_machine) {
229 r = sd_bus_get_name_machine_id(bus, *i, &mid);
230 if (r >= 0) {
231 char m[SD_ID128_STRING_MAX];
232 printf(" %s\n", sd_id128_to_string(mid, m));
233 } else
234 puts(" -");
235 } else
236 putchar('\n');
237 }
238
239 return 0;
240 }
241
242 static void print_subtree(const char *prefix, const char *path, char **l) {
243 const char *vertical, *space;
244 char **n;
245
246 /* We assume the list is sorted. Let's first skip over the
247 * entry we are looking at. */
248 for (;;) {
249 if (!*l)
250 return;
251
252 if (!streq(*l, path))
253 break;
254
255 l++;
256 }
257
258 vertical = strjoina(prefix, draw_special_char(DRAW_TREE_VERTICAL));
259 space = strjoina(prefix, draw_special_char(DRAW_TREE_SPACE));
260
261 for (;;) {
262 bool has_more = false;
263
264 if (!*l || !path_startswith(*l, path))
265 break;
266
267 n = l + 1;
268 for (;;) {
269 if (!*n || !path_startswith(*n, path))
270 break;
271
272 if (!path_startswith(*n, *l)) {
273 has_more = true;
274 break;
275 }
276
277 n++;
278 }
279
280 printf("%s%s%s\n", prefix, draw_special_char(has_more ? DRAW_TREE_BRANCH : DRAW_TREE_RIGHT), *l);
281
282 print_subtree(has_more ? vertical : space, *l, l);
283 l = n;
284 }
285 }
286
287 static void print_tree(const char *prefix, char **l) {
288
289 pager_open_if_enabled();
290
291 prefix = strempty(prefix);
292
293 if (arg_list) {
294 char **i;
295
296 STRV_FOREACH(i, l)
297 printf("%s%s\n", prefix, *i);
298 return;
299 }
300
301 if (strv_isempty(l)) {
302 printf("No objects discovered.\n");
303 return;
304 }
305
306 if (streq(l[0], "/") && !l[1]) {
307 printf("Only root object discovered.\n");
308 return;
309 }
310
311 print_subtree(prefix, "/", l);
312 }
313
314 static int on_path(const char *path, void *userdata) {
315 Set *paths = userdata;
316 int r;
317
318 assert(paths);
319
320 r = set_put_strdup(paths, path);
321 if (r < 0)
322 return log_oom();
323
324 return 0;
325 }
326
327 static int find_nodes(sd_bus *bus, const char *service, const char *path, Set *paths, bool many) {
328 static const XMLIntrospectOps ops = {
329 .on_path = on_path,
330 };
331
332 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
333 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
334 const char *xml;
335 int r;
336
337 r = sd_bus_call_method(bus, service, path, "org.freedesktop.DBus.Introspectable", "Introspect", &error, &reply, "");
338 if (r < 0) {
339 if (many)
340 printf("Failed to introspect object %s of service %s: %s\n", path, service, bus_error_message(&error, r));
341 else
342 log_error("Failed to introspect object %s of service %s: %s", path, service, bus_error_message(&error, r));
343 return r;
344 }
345
346 r = sd_bus_message_read(reply, "s", &xml);
347 if (r < 0)
348 return bus_log_parse_error(r);
349
350 return parse_xml_introspect(path, xml, &ops, paths);
351 }
352
353 static int tree_one(sd_bus *bus, const char *service, const char *prefix, bool many) {
354 _cleanup_set_free_free_ Set *paths = NULL, *done = NULL, *failed = NULL;
355 _cleanup_free_ char **l = NULL;
356 char *m;
357 int r;
358
359 paths = set_new(&string_hash_ops);
360 if (!paths)
361 return log_oom();
362
363 done = set_new(&string_hash_ops);
364 if (!done)
365 return log_oom();
366
367 failed = set_new(&string_hash_ops);
368 if (!failed)
369 return log_oom();
370
371 m = strdup("/");
372 if (!m)
373 return log_oom();
374
375 r = set_put(paths, m);
376 if (r < 0) {
377 free(m);
378 return log_oom();
379 }
380
381 for (;;) {
382 _cleanup_free_ char *p = NULL;
383 int q;
384
385 p = set_steal_first(paths);
386 if (!p)
387 break;
388
389 if (set_contains(done, p) ||
390 set_contains(failed, p))
391 continue;
392
393 q = find_nodes(bus, service, p, paths, many);
394 if (q < 0) {
395 if (r >= 0)
396 r = q;
397
398 q = set_put(failed, p);
399 } else
400 q = set_put(done, p);
401
402 if (q < 0)
403 return log_oom();
404
405 assert(q != 0);
406 p = NULL;
407 }
408
409 pager_open_if_enabled();
410
411 l = set_get_strv(done);
412 if (!l)
413 return log_oom();
414
415 strv_sort(l);
416 print_tree(prefix, l);
417
418 fflush(stdout);
419
420 return r;
421 }
422
423 static int tree(sd_bus *bus, char **argv) {
424 char **i;
425 int r = 0;
426
427 if (!arg_unique && !arg_acquired)
428 arg_acquired = true;
429
430 if (strv_length(argv) <= 1) {
431 _cleanup_strv_free_ char **names = NULL;
432 bool not_first = false;
433
434 r = sd_bus_list_names(bus, &names, NULL);
435 if (r < 0)
436 return log_error_errno(r, "Failed to get name list: %m");
437
438 pager_open_if_enabled();
439
440 STRV_FOREACH(i, names) {
441 int q;
442
443 if (!arg_unique && (*i)[0] == ':')
444 continue;
445
446 if (!arg_acquired && (*i)[0] == ':')
447 continue;
448
449 if (not_first)
450 printf("\n");
451
452 printf("Service %s%s%s:\n", ansi_highlight(), *i, ansi_highlight_off());
453
454 q = tree_one(bus, *i, NULL, true);
455 if (q < 0 && r >= 0)
456 r = q;
457
458 not_first = true;
459 }
460 } else {
461 STRV_FOREACH(i, argv+1) {
462 int q;
463
464 if (i > argv+1)
465 printf("\n");
466
467 if (argv[2]) {
468 pager_open_if_enabled();
469 printf("Service %s%s%s:\n", ansi_highlight(), *i, ansi_highlight_off());
470 }
471
472 q = tree_one(bus, *i, NULL, !!argv[2]);
473 if (q < 0 && r >= 0)
474 r = q;
475 }
476 }
477
478 return r;
479 }
480
481 static int format_cmdline(sd_bus_message *m, FILE *f, bool needs_space) {
482 int r;
483
484 for (;;) {
485 const char *contents = NULL;
486 char type;
487 union {
488 uint8_t u8;
489 uint16_t u16;
490 int16_t s16;
491 uint32_t u32;
492 int32_t s32;
493 uint64_t u64;
494 int64_t s64;
495 double d64;
496 const char *string;
497 int i;
498 } basic;
499
500 r = sd_bus_message_peek_type(m, &type, &contents);
501 if (r <= 0)
502 return r;
503
504 if (bus_type_is_container(type) > 0) {
505
506 r = sd_bus_message_enter_container(m, type, contents);
507 if (r < 0)
508 return r;
509
510 if (type == SD_BUS_TYPE_ARRAY) {
511 unsigned n = 0;
512
513 /* count array entries */
514 for (;;) {
515
516 r = sd_bus_message_skip(m, contents);
517 if (r < 0)
518 return r;
519 if (r == 0)
520 break;
521
522 n++;
523 }
524
525 r = sd_bus_message_rewind(m, false);
526 if (r < 0)
527 return r;
528
529 if (needs_space)
530 fputc(' ', f);
531
532 fprintf(f, "%u", n);
533 } else if (type == SD_BUS_TYPE_VARIANT) {
534
535 if (needs_space)
536 fputc(' ', f);
537
538 fprintf(f, "%s", contents);
539 }
540
541 r = format_cmdline(m, f, needs_space || IN_SET(type, SD_BUS_TYPE_ARRAY, SD_BUS_TYPE_VARIANT));
542 if (r < 0)
543 return r;
544
545 r = sd_bus_message_exit_container(m);
546 if (r < 0)
547 return r;
548
549 continue;
550 }
551
552 r = sd_bus_message_read_basic(m, type, &basic);
553 if (r < 0)
554 return r;
555
556 if (needs_space)
557 fputc(' ', f);
558
559 switch (type) {
560 case SD_BUS_TYPE_BYTE:
561 fprintf(f, "%u", basic.u8);
562 break;
563
564 case SD_BUS_TYPE_BOOLEAN:
565 fputs(true_false(basic.i), f);
566 break;
567
568 case SD_BUS_TYPE_INT16:
569 fprintf(f, "%i", basic.s16);
570 break;
571
572 case SD_BUS_TYPE_UINT16:
573 fprintf(f, "%u", basic.u16);
574 break;
575
576 case SD_BUS_TYPE_INT32:
577 fprintf(f, "%i", basic.s32);
578 break;
579
580 case SD_BUS_TYPE_UINT32:
581 fprintf(f, "%u", basic.u32);
582 break;
583
584 case SD_BUS_TYPE_INT64:
585 fprintf(f, "%" PRIi64, basic.s64);
586 break;
587
588 case SD_BUS_TYPE_UINT64:
589 fprintf(f, "%" PRIu64, basic.u64);
590 break;
591
592 case SD_BUS_TYPE_DOUBLE:
593 fprintf(f, "%g", basic.d64);
594 break;
595
596 case SD_BUS_TYPE_STRING:
597 case SD_BUS_TYPE_OBJECT_PATH:
598 case SD_BUS_TYPE_SIGNATURE: {
599 _cleanup_free_ char *b = NULL;
600
601 b = cescape(basic.string);
602 if (!b)
603 return -ENOMEM;
604
605 fprintf(f, "\"%s\"", b);
606 break;
607 }
608
609 case SD_BUS_TYPE_UNIX_FD:
610 fprintf(f, "%i", basic.i);
611 break;
612
613 default:
614 assert_not_reached("Unknown basic type.");
615 }
616
617 needs_space = true;
618 }
619 }
620
621 typedef struct Member {
622 const char *type;
623 char *interface;
624 char *name;
625 char *signature;
626 char *result;
627 char *value;
628 bool writable;
629 uint64_t flags;
630 } Member;
631
632 static unsigned long member_hash_func(const void *p, const uint8_t hash_key[]) {
633 const Member *m = p;
634 unsigned long ul;
635
636 assert(m);
637 assert(m->type);
638
639 ul = string_hash_func(m->type, hash_key);
640
641 if (m->name)
642 ul ^= string_hash_func(m->name, hash_key);
643
644 if (m->interface)
645 ul ^= string_hash_func(m->interface, hash_key);
646
647 return ul;
648 }
649
650 static int member_compare_func(const void *a, const void *b) {
651 const Member *x = a, *y = b;
652 int d;
653
654 assert(x);
655 assert(y);
656 assert(x->type);
657 assert(y->type);
658
659 if (!x->interface && y->interface)
660 return -1;
661 if (x->interface && !y->interface)
662 return 1;
663 if (x->interface && y->interface) {
664 d = strcmp(x->interface, y->interface);
665 if (d != 0)
666 return d;
667 }
668
669 d = strcmp(x->type, y->type);
670 if (d != 0)
671 return d;
672
673 if (!x->name && y->name)
674 return -1;
675 if (x->name && !y->name)
676 return 1;
677 if (x->name && y->name)
678 return strcmp(x->name, y->name);
679
680 return 0;
681 }
682
683 static int member_compare_funcp(const void *a, const void *b) {
684 const Member *const * x = (const Member *const *) a, * const *y = (const Member *const *) b;
685
686 return member_compare_func(*x, *y);
687 }
688
689 static void member_free(Member *m) {
690 if (!m)
691 return;
692
693 free(m->interface);
694 free(m->name);
695 free(m->signature);
696 free(m->result);
697 free(m->value);
698 free(m);
699 }
700
701 DEFINE_TRIVIAL_CLEANUP_FUNC(Member*, member_free);
702
703 static void member_set_free(Set *s) {
704 Member *m;
705
706 while ((m = set_steal_first(s)))
707 member_free(m);
708
709 set_free(s);
710 }
711
712 DEFINE_TRIVIAL_CLEANUP_FUNC(Set*, member_set_free);
713
714 static int on_interface(const char *interface, uint64_t flags, void *userdata) {
715 _cleanup_(member_freep) Member *m;
716 Set *members = userdata;
717 int r;
718
719 assert(interface);
720 assert(members);
721
722 m = new0(Member, 1);
723 if (!m)
724 return log_oom();
725
726 m->type = "interface";
727 m->flags = flags;
728
729 r = free_and_strdup(&m->interface, interface);
730 if (r < 0)
731 return log_oom();
732
733 r = set_put(members, m);
734 if (r <= 0) {
735 log_error("Duplicate interface");
736 return -EINVAL;
737 }
738
739 m = NULL;
740 return 0;
741 }
742
743 static int on_method(const char *interface, const char *name, const char *signature, const char *result, uint64_t flags, void *userdata) {
744 _cleanup_(member_freep) Member *m;
745 Set *members = userdata;
746 int r;
747
748 assert(interface);
749 assert(name);
750
751 m = new0(Member, 1);
752 if (!m)
753 return log_oom();
754
755 m->type = "method";
756 m->flags = flags;
757
758 r = free_and_strdup(&m->interface, interface);
759 if (r < 0)
760 return log_oom();
761
762 r = free_and_strdup(&m->name, name);
763 if (r < 0)
764 return log_oom();
765
766 r = free_and_strdup(&m->signature, signature);
767 if (r < 0)
768 return log_oom();
769
770 r = free_and_strdup(&m->result, result);
771 if (r < 0)
772 return log_oom();
773
774 r = set_put(members, m);
775 if (r <= 0) {
776 log_error("Duplicate method");
777 return -EINVAL;
778 }
779
780 m = NULL;
781 return 0;
782 }
783
784 static int on_signal(const char *interface, const char *name, const char *signature, uint64_t flags, void *userdata) {
785 _cleanup_(member_freep) Member *m;
786 Set *members = userdata;
787 int r;
788
789 assert(interface);
790 assert(name);
791
792 m = new0(Member, 1);
793 if (!m)
794 return log_oom();
795
796 m->type = "signal";
797 m->flags = flags;
798
799 r = free_and_strdup(&m->interface, interface);
800 if (r < 0)
801 return log_oom();
802
803 r = free_and_strdup(&m->name, name);
804 if (r < 0)
805 return log_oom();
806
807 r = free_and_strdup(&m->signature, signature);
808 if (r < 0)
809 return log_oom();
810
811 r = set_put(members, m);
812 if (r <= 0) {
813 log_error("Duplicate signal");
814 return -EINVAL;
815 }
816
817 m = NULL;
818 return 0;
819 }
820
821 static int on_property(const char *interface, const char *name, const char *signature, bool writable, uint64_t flags, void *userdata) {
822 _cleanup_(member_freep) Member *m;
823 Set *members = userdata;
824 int r;
825
826 assert(interface);
827 assert(name);
828
829 m = new0(Member, 1);
830 if (!m)
831 return log_oom();
832
833 m->type = "property";
834 m->flags = flags;
835 m->writable = writable;
836
837 r = free_and_strdup(&m->interface, interface);
838 if (r < 0)
839 return log_oom();
840
841 r = free_and_strdup(&m->name, name);
842 if (r < 0)
843 return log_oom();
844
845 r = free_and_strdup(&m->signature, signature);
846 if (r < 0)
847 return log_oom();
848
849 r = set_put(members, m);
850 if (r <= 0) {
851 log_error("Duplicate property");
852 return -EINVAL;
853 }
854
855 m = NULL;
856 return 0;
857 }
858
859 static const char *strdash(const char *x) {
860 return isempty(x) ? "-" : x;
861 }
862
863 static int introspect(sd_bus *bus, char **argv) {
864 static const struct hash_ops member_hash_ops = {
865 .hash = member_hash_func,
866 .compare = member_compare_func,
867 };
868
869 static const XMLIntrospectOps ops = {
870 .on_interface = on_interface,
871 .on_method = on_method,
872 .on_signal = on_signal,
873 .on_property = on_property,
874 };
875
876 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
877 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
878 _cleanup_(member_set_freep) Set *members = NULL;
879 Iterator i;
880 Member *m;
881 const char *xml;
882 int r;
883 unsigned name_width, type_width, signature_width, result_width;
884 Member **sorted = NULL;
885 unsigned k = 0, j, n_args;
886
887 n_args = strv_length(argv);
888 if (n_args < 3) {
889 log_error("Requires service and object path argument.");
890 return -EINVAL;
891 }
892
893 if (n_args > 4) {
894 log_error("Too many arguments.");
895 return -EINVAL;
896 }
897
898 members = set_new(&member_hash_ops);
899 if (!members)
900 return log_oom();
901
902 r = sd_bus_call_method(bus, argv[1], argv[2], "org.freedesktop.DBus.Introspectable", "Introspect", &error, &reply, "");
903 if (r < 0) {
904 log_error("Failed to introspect object %s of service %s: %s", argv[2], argv[1], bus_error_message(&error, r));
905 return r;
906 }
907
908 r = sd_bus_message_read(reply, "s", &xml);
909 if (r < 0)
910 return bus_log_parse_error(r);
911
912 /* First, get list of all properties */
913 r = parse_xml_introspect(argv[2], xml, &ops, members);
914 if (r < 0)
915 return r;
916
917 /* Second, find the current values for them */
918 SET_FOREACH(m, members, i) {
919
920 if (!streq(m->type, "property"))
921 continue;
922
923 if (m->value)
924 continue;
925
926 if (argv[3] && !streq(argv[3], m->interface))
927 continue;
928
929 r = sd_bus_call_method(bus, argv[1], argv[2], "org.freedesktop.DBus.Properties", "GetAll", &error, &reply, "s", m->interface);
930 if (r < 0) {
931 log_error("%s", bus_error_message(&error, r));
932 return r;
933 }
934
935 r = sd_bus_message_enter_container(reply, 'a', "{sv}");
936 if (r < 0)
937 return bus_log_parse_error(r);
938
939 for (;;) {
940 Member *z;
941 _cleanup_free_ char *buf = NULL;
942 _cleanup_fclose_ FILE *mf = NULL;
943 size_t sz = 0;
944 const char *name;
945
946 r = sd_bus_message_enter_container(reply, 'e', "sv");
947 if (r < 0)
948 return bus_log_parse_error(r);
949
950 if (r == 0)
951 break;
952
953 r = sd_bus_message_read(reply, "s", &name);
954 if (r < 0)
955 return bus_log_parse_error(r);
956
957 r = sd_bus_message_enter_container(reply, 'v', NULL);
958 if (r < 0)
959 return bus_log_parse_error(r);
960
961 mf = open_memstream(&buf, &sz);
962 if (!mf)
963 return log_oom();
964
965 r = format_cmdline(reply, mf, false);
966 if (r < 0)
967 return bus_log_parse_error(r);
968
969 fclose(mf);
970 mf = NULL;
971
972 z = set_get(members, &((Member) {
973 .type = "property",
974 .interface = m->interface,
975 .name = (char*) name }));
976 if (z) {
977 free(z->value);
978 z->value = buf;
979 buf = NULL;
980 }
981
982 r = sd_bus_message_exit_container(reply);
983 if (r < 0)
984 return bus_log_parse_error(r);
985
986 r = sd_bus_message_exit_container(reply);
987 if (r < 0)
988 return bus_log_parse_error(r);
989 }
990
991 r = sd_bus_message_exit_container(reply);
992 if (r < 0)
993 return bus_log_parse_error(r);
994 }
995
996 pager_open_if_enabled();
997
998 name_width = strlen("NAME");
999 type_width = strlen("TYPE");
1000 signature_width = strlen("SIGNATURE");
1001 result_width = strlen("RESULT/VALUE");
1002
1003 sorted = newa(Member*, set_size(members));
1004
1005 SET_FOREACH(m, members, i) {
1006
1007 if (argv[3] && !streq(argv[3], m->interface))
1008 continue;
1009
1010 if (m->interface)
1011 name_width = MAX(name_width, strlen(m->interface));
1012 if (m->name)
1013 name_width = MAX(name_width, strlen(m->name) + 1);
1014 if (m->type)
1015 type_width = MAX(type_width, strlen(m->type));
1016 if (m->signature)
1017 signature_width = MAX(signature_width, strlen(m->signature));
1018 if (m->result)
1019 result_width = MAX(result_width, strlen(m->result));
1020 if (m->value)
1021 result_width = MAX(result_width, strlen(m->value));
1022
1023 sorted[k++] = m;
1024 }
1025
1026 if (result_width > 40)
1027 result_width = 40;
1028
1029 qsort(sorted, k, sizeof(Member*), member_compare_funcp);
1030
1031 if (arg_legend) {
1032 printf("%-*s %-*s %-*s %-*s %s\n",
1033 (int) name_width, "NAME",
1034 (int) type_width, "TYPE",
1035 (int) signature_width, "SIGNATURE",
1036 (int) result_width, "RESULT/VALUE",
1037 "FLAGS");
1038 }
1039
1040 for (j = 0; j < k; j++) {
1041 _cleanup_free_ char *ellipsized = NULL;
1042 const char *rv;
1043 bool is_interface;
1044
1045 m = sorted[j];
1046
1047 if (argv[3] && !streq(argv[3], m->interface))
1048 continue;
1049
1050 is_interface = streq(m->type, "interface");
1051
1052 if (argv[3] && is_interface)
1053 continue;
1054
1055 if (m->value) {
1056 ellipsized = ellipsize(m->value, result_width, 100);
1057 if (!ellipsized)
1058 return log_oom();
1059
1060 rv = ellipsized;
1061 } else
1062 rv = strdash(m->result);
1063
1064 printf("%s%s%-*s%s %-*s %-*s %-*s%s%s%s%s%s%s\n",
1065 is_interface ? ansi_highlight() : "",
1066 is_interface ? "" : ".",
1067 - !is_interface + (int) name_width, strdash(streq_ptr(m->type, "interface") ? m->interface : m->name),
1068 is_interface ? ansi_highlight_off() : "",
1069 (int) type_width, strdash(m->type),
1070 (int) signature_width, strdash(m->signature),
1071 (int) result_width, rv,
1072 (m->flags & SD_BUS_VTABLE_DEPRECATED) ? " deprecated" : (m->flags || m->writable ? "" : " -"),
1073 (m->flags & SD_BUS_VTABLE_METHOD_NO_REPLY) ? " no-reply" : "",
1074 (m->flags & SD_BUS_VTABLE_PROPERTY_CONST) ? " const" : "",
1075 (m->flags & SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE) ? " emits-change" : "",
1076 (m->flags & SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION) ? " emits-invalidation" : "",
1077 m->writable ? " writable" : "");
1078 }
1079
1080 return 0;
1081 }
1082
1083 static int message_dump(sd_bus_message *m, FILE *f) {
1084 return bus_message_dump(m, f, BUS_MESSAGE_DUMP_WITH_HEADER);
1085 }
1086
1087 static int message_pcap(sd_bus_message *m, FILE *f) {
1088 return bus_message_pcap_frame(m, arg_snaplen, f);
1089 }
1090
1091 static int monitor(sd_bus *bus, char *argv[], int (*dump)(sd_bus_message *m, FILE *f)) {
1092 bool added_something = false;
1093 char **i;
1094 int r;
1095
1096 STRV_FOREACH(i, argv+1) {
1097 _cleanup_free_ char *m = NULL;
1098
1099 if (!service_name_is_valid(*i)) {
1100 log_error("Invalid service name '%s'", *i);
1101 return -EINVAL;
1102 }
1103
1104 m = strjoin("sender='", *i, "'", NULL);
1105 if (!m)
1106 return log_oom();
1107
1108 r = sd_bus_add_match(bus, NULL, m, NULL, NULL);
1109 if (r < 0)
1110 return log_error_errno(r, "Failed to add match: %m");
1111
1112 added_something = true;
1113 }
1114
1115 STRV_FOREACH(i, arg_matches) {
1116 r = sd_bus_add_match(bus, NULL, *i, NULL, NULL);
1117 if (r < 0)
1118 return log_error_errno(r, "Failed to add match: %m");
1119
1120 added_something = true;
1121 }
1122
1123 if (!added_something) {
1124 r = sd_bus_add_match(bus, NULL, "", NULL, NULL);
1125 if (r < 0)
1126 return log_error_errno(r, "Failed to add match: %m");
1127 }
1128
1129 log_info("Monitoring bus message stream.");
1130
1131 for (;;) {
1132 _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
1133
1134 r = sd_bus_process(bus, &m);
1135 if (r < 0)
1136 return log_error_errno(r, "Failed to process bus: %m");
1137
1138 if (m) {
1139 dump(m, stdout);
1140 fflush(stdout);
1141
1142 if (sd_bus_message_is_signal(m, "org.freedesktop.DBus.Local", "Disconnected") > 0) {
1143 log_info("Connection terminated, exiting.");
1144 return 0;
1145 }
1146
1147 continue;
1148 }
1149
1150 if (r > 0)
1151 continue;
1152
1153 r = sd_bus_wait(bus, (uint64_t) -1);
1154 if (r < 0)
1155 return log_error_errno(r, "Failed to wait for bus: %m");
1156 }
1157 }
1158
1159 static int capture(sd_bus *bus, char *argv[]) {
1160 int r;
1161
1162 if (isatty(fileno(stdout)) > 0) {
1163 log_error("Refusing to write message data to console, please redirect output to a file.");
1164 return -EINVAL;
1165 }
1166
1167 bus_pcap_header(arg_snaplen, stdout);
1168
1169 r = monitor(bus, argv, message_pcap);
1170 if (r < 0)
1171 return r;
1172
1173 if (ferror(stdout)) {
1174 log_error("Couldn't write capture file.");
1175 return -EIO;
1176 }
1177
1178 return r;
1179 }
1180
1181 static int status(sd_bus *bus, char *argv[]) {
1182 _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
1183 pid_t pid;
1184 int r;
1185
1186 assert(bus);
1187
1188 if (strv_length(argv) > 2) {
1189 log_error("Expects no or one argument.");
1190 return -EINVAL;
1191 }
1192
1193 if (argv[1]) {
1194 r = parse_pid(argv[1], &pid);
1195 if (r < 0)
1196 r = sd_bus_get_name_creds(
1197 bus,
1198 argv[1],
1199 (arg_augment_creds ? SD_BUS_CREDS_AUGMENT : 0) | _SD_BUS_CREDS_ALL,
1200 &creds);
1201 else
1202 r = sd_bus_creds_new_from_pid(
1203 &creds,
1204 pid,
1205 _SD_BUS_CREDS_ALL);
1206 } else {
1207 const char *scope, *address;
1208 sd_id128_t bus_id;
1209
1210 r = sd_bus_get_address(bus, &address);
1211 if (r >= 0)
1212 printf("BusAddress=%s%s%s\n", ansi_highlight(), address, ansi_highlight_off());
1213
1214 r = sd_bus_get_scope(bus, &scope);
1215 if (r >= 0)
1216 printf("BusScope=%s%s%s\n", ansi_highlight(), scope, ansi_highlight_off());
1217
1218 r = sd_bus_get_bus_id(bus, &bus_id);
1219 if (r >= 0)
1220 printf("BusID=%s" SD_ID128_FORMAT_STR "%s\n", ansi_highlight(), SD_ID128_FORMAT_VAL(bus_id), ansi_highlight_off());
1221
1222 r = sd_bus_get_owner_creds(
1223 bus,
1224 (arg_augment_creds ? SD_BUS_CREDS_AUGMENT : 0) | _SD_BUS_CREDS_ALL,
1225 &creds);
1226 }
1227
1228 if (r < 0)
1229 return log_error_errno(r, "Failed to get credentials: %m");
1230
1231 bus_creds_dump(creds, NULL, false);
1232 return 0;
1233 }
1234
1235 static int message_append_cmdline(sd_bus_message *m, const char *signature, char ***x) {
1236 char **p;
1237 int r;
1238
1239 assert(m);
1240 assert(signature);
1241 assert(x);
1242
1243 p = *x;
1244
1245 for (;;) {
1246 const char *v;
1247 char t;
1248
1249 t = *signature;
1250 v = *p;
1251
1252 if (t == 0)
1253 break;
1254 if (!v) {
1255 log_error("Too few parameters for signature.");
1256 return -EINVAL;
1257 }
1258
1259 signature++;
1260 p++;
1261
1262 switch (t) {
1263
1264 case SD_BUS_TYPE_BOOLEAN:
1265
1266 r = parse_boolean(v);
1267 if (r < 0) {
1268 log_error("Failed to parse as boolean: %s", v);
1269 return r;
1270 }
1271
1272 r = sd_bus_message_append_basic(m, t, &r);
1273 break;
1274
1275 case SD_BUS_TYPE_BYTE: {
1276 uint8_t z;
1277
1278 r = safe_atou8(v, &z);
1279 if (r < 0) {
1280 log_error("Failed to parse as byte (unsigned 8bit integer): %s", v);
1281 return r;
1282 }
1283
1284 r = sd_bus_message_append_basic(m, t, &z);
1285 break;
1286 }
1287
1288 case SD_BUS_TYPE_INT16: {
1289 int16_t z;
1290
1291 r = safe_atoi16(v, &z);
1292 if (r < 0) {
1293 log_error("Failed to parse as signed 16bit integer: %s", v);
1294 return r;
1295 }
1296
1297 r = sd_bus_message_append_basic(m, t, &z);
1298 break;
1299 }
1300
1301 case SD_BUS_TYPE_UINT16: {
1302 uint16_t z;
1303
1304 r = safe_atou16(v, &z);
1305 if (r < 0) {
1306 log_error("Failed to parse as unsigned 16bit integer: %s", v);
1307 return r;
1308 }
1309
1310 r = sd_bus_message_append_basic(m, t, &z);
1311 break;
1312 }
1313
1314 case SD_BUS_TYPE_INT32: {
1315 int32_t z;
1316
1317 r = safe_atoi32(v, &z);
1318 if (r < 0) {
1319 log_error("Failed to parse as signed 32bit integer: %s", v);
1320 return r;
1321 }
1322
1323 r = sd_bus_message_append_basic(m, t, &z);
1324 break;
1325 }
1326
1327 case SD_BUS_TYPE_UINT32: {
1328 uint32_t z;
1329
1330 r = safe_atou32(v, &z);
1331 if (r < 0) {
1332 log_error("Failed to parse as unsigned 32bit integer: %s", v);
1333 return r;
1334 }
1335
1336 r = sd_bus_message_append_basic(m, t, &z);
1337 break;
1338 }
1339
1340 case SD_BUS_TYPE_INT64: {
1341 int64_t z;
1342
1343 r = safe_atoi64(v, &z);
1344 if (r < 0) {
1345 log_error("Failed to parse as signed 64bit integer: %s", v);
1346 return r;
1347 }
1348
1349 r = sd_bus_message_append_basic(m, t, &z);
1350 break;
1351 }
1352
1353 case SD_BUS_TYPE_UINT64: {
1354 uint64_t z;
1355
1356 r = safe_atou64(v, &z);
1357 if (r < 0) {
1358 log_error("Failed to parse as unsigned 64bit integer: %s", v);
1359 return r;
1360 }
1361
1362 r = sd_bus_message_append_basic(m, t, &z);
1363 break;
1364 }
1365
1366
1367 case SD_BUS_TYPE_DOUBLE: {
1368 double z;
1369
1370 r = safe_atod(v, &z);
1371 if (r < 0) {
1372 log_error("Failed to parse as double precision floating point: %s", v);
1373 return r;
1374 }
1375
1376 r = sd_bus_message_append_basic(m, t, &z);
1377 break;
1378 }
1379
1380 case SD_BUS_TYPE_STRING:
1381 case SD_BUS_TYPE_OBJECT_PATH:
1382 case SD_BUS_TYPE_SIGNATURE:
1383
1384 r = sd_bus_message_append_basic(m, t, v);
1385 break;
1386
1387 case SD_BUS_TYPE_ARRAY: {
1388 uint32_t n;
1389 size_t k;
1390
1391 r = safe_atou32(v, &n);
1392 if (r < 0) {
1393 log_error("Failed to parse number of array entries: %s", v);
1394 return r;
1395 }
1396
1397 r = signature_element_length(signature, &k);
1398 if (r < 0) {
1399 log_error("Invalid array signature.");
1400 return r;
1401 }
1402
1403 {
1404 unsigned i;
1405 char s[k + 1];
1406 memcpy(s, signature, k);
1407 s[k] = 0;
1408
1409 r = sd_bus_message_open_container(m, SD_BUS_TYPE_ARRAY, s);
1410 if (r < 0)
1411 return bus_log_create_error(r);
1412
1413 for (i = 0; i < n; i++) {
1414 r = message_append_cmdline(m, s, &p);
1415 if (r < 0)
1416 return r;
1417 }
1418 }
1419
1420 signature += k;
1421
1422 r = sd_bus_message_close_container(m);
1423 break;
1424 }
1425
1426 case SD_BUS_TYPE_VARIANT:
1427 r = sd_bus_message_open_container(m, SD_BUS_TYPE_VARIANT, v);
1428 if (r < 0)
1429 return bus_log_create_error(r);
1430
1431 r = message_append_cmdline(m, v, &p);
1432 if (r < 0)
1433 return r;
1434
1435 r = sd_bus_message_close_container(m);
1436 break;
1437
1438 case SD_BUS_TYPE_STRUCT_BEGIN:
1439 case SD_BUS_TYPE_DICT_ENTRY_BEGIN: {
1440 size_t k;
1441
1442 signature--;
1443 p--;
1444
1445 r = signature_element_length(signature, &k);
1446 if (r < 0) {
1447 log_error("Invalid struct/dict entry signature.");
1448 return r;
1449 }
1450
1451 {
1452 char s[k-1];
1453 memcpy(s, signature + 1, k - 2);
1454 s[k - 2] = 0;
1455
1456 r = sd_bus_message_open_container(m, t == SD_BUS_TYPE_STRUCT_BEGIN ? SD_BUS_TYPE_STRUCT : SD_BUS_TYPE_DICT_ENTRY, s);
1457 if (r < 0)
1458 return bus_log_create_error(r);
1459
1460 r = message_append_cmdline(m, s, &p);
1461 if (r < 0)
1462 return r;
1463 }
1464
1465 signature += k;
1466
1467 r = sd_bus_message_close_container(m);
1468 break;
1469 }
1470
1471 case SD_BUS_TYPE_UNIX_FD:
1472 log_error("UNIX file descriptor not supported as type.");
1473 return -EINVAL;
1474
1475 default:
1476 log_error("Unknown signature type %c.", t);
1477 return -EINVAL;
1478 }
1479
1480 if (r < 0)
1481 return bus_log_create_error(r);
1482 }
1483
1484 *x = p;
1485 return 0;
1486 }
1487
1488 static int call(sd_bus *bus, char *argv[]) {
1489 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1490 _cleanup_bus_message_unref_ sd_bus_message *m = NULL, *reply = NULL;
1491 int r;
1492
1493 assert(bus);
1494
1495 if (strv_length(argv) < 5) {
1496 log_error("Expects at least four arguments.");
1497 return -EINVAL;
1498 }
1499
1500 r = sd_bus_message_new_method_call(bus, &m, argv[1], argv[2], argv[3], argv[4]);
1501 if (r < 0)
1502 return bus_log_create_error(r);
1503
1504 r = sd_bus_message_set_expect_reply(m, arg_expect_reply);
1505 if (r < 0)
1506 return bus_log_create_error(r);
1507
1508 r = sd_bus_message_set_auto_start(m, arg_auto_start);
1509 if (r < 0)
1510 return bus_log_create_error(r);
1511
1512 r = sd_bus_message_set_allow_interactive_authorization(m, arg_allow_interactive_authorization);
1513 if (r < 0)
1514 return bus_log_create_error(r);
1515
1516 if (!isempty(argv[5])) {
1517 char **p;
1518
1519 p = argv+6;
1520
1521 r = message_append_cmdline(m, argv[5], &p);
1522 if (r < 0)
1523 return r;
1524
1525 if (*p) {
1526 log_error("Too many parameters for signature.");
1527 return -EINVAL;
1528 }
1529 }
1530
1531 if (!arg_expect_reply) {
1532 r = sd_bus_send(bus, m, NULL);
1533 if (r < 0) {
1534 log_error("Failed to send message.");
1535 return r;
1536 }
1537
1538 return 0;
1539 }
1540
1541 r = sd_bus_call(bus, m, arg_timeout, &error, &reply);
1542 if (r < 0) {
1543 log_error("%s", bus_error_message(&error, r));
1544 return r;
1545 }
1546
1547 r = sd_bus_message_is_empty(reply);
1548 if (r < 0)
1549 return bus_log_parse_error(r);
1550
1551 if (r == 0 && !arg_quiet) {
1552
1553 if (arg_verbose) {
1554 pager_open_if_enabled();
1555
1556 r = bus_message_dump(reply, stdout, 0);
1557 if (r < 0)
1558 return r;
1559 } else {
1560
1561 fputs(sd_bus_message_get_signature(reply, true), stdout);
1562 fputc(' ', stdout);
1563
1564 r = format_cmdline(reply, stdout, false);
1565 if (r < 0)
1566 return bus_log_parse_error(r);
1567
1568 fputc('\n', stdout);
1569 }
1570 }
1571
1572 return 0;
1573 }
1574
1575 static int get_property(sd_bus *bus, char *argv[]) {
1576 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1577 unsigned n;
1578 char **i;
1579 int r;
1580
1581 assert(bus);
1582
1583 n = strv_length(argv);
1584 if (n < 5) {
1585 log_error("Expects at least four arguments.");
1586 return -EINVAL;
1587 }
1588
1589 STRV_FOREACH(i, argv + 4) {
1590 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1591 const char *contents = NULL;
1592 char type;
1593
1594 r = sd_bus_call_method(bus, argv[1], argv[2], "org.freedesktop.DBus.Properties", "Get", &error, &reply, "ss", argv[3], *i);
1595 if (r < 0) {
1596 log_error("%s", bus_error_message(&error, r));
1597 return r;
1598 }
1599
1600 r = sd_bus_message_peek_type(reply, &type, &contents);
1601 if (r < 0)
1602 return bus_log_parse_error(r);
1603
1604 r = sd_bus_message_enter_container(reply, 'v', contents);
1605 if (r < 0)
1606 return bus_log_parse_error(r);
1607
1608 if (arg_verbose) {
1609 pager_open_if_enabled();
1610
1611 r = bus_message_dump(reply, stdout, BUS_MESSAGE_DUMP_SUBTREE_ONLY);
1612 if (r < 0)
1613 return r;
1614 } else {
1615 fputs(contents, stdout);
1616 fputc(' ', stdout);
1617
1618 r = format_cmdline(reply, stdout, false);
1619 if (r < 0)
1620 return bus_log_parse_error(r);
1621
1622 fputc('\n', stdout);
1623 }
1624
1625 r = sd_bus_message_exit_container(reply);
1626 if (r < 0)
1627 return bus_log_parse_error(r);
1628 }
1629
1630 return 0;
1631 }
1632
1633 static int set_property(sd_bus *bus, char *argv[]) {
1634 _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
1635 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1636 unsigned n;
1637 char **p;
1638 int r;
1639
1640 assert(bus);
1641
1642 n = strv_length(argv);
1643 if (n < 6) {
1644 log_error("Expects at least five arguments.");
1645 return -EINVAL;
1646 }
1647
1648 r = sd_bus_message_new_method_call(bus, &m, argv[1], argv[2], "org.freedesktop.DBus.Properties", "Set");
1649 if (r < 0)
1650 return bus_log_create_error(r);
1651
1652 r = sd_bus_message_append(m, "ss", argv[3], argv[4]);
1653 if (r < 0)
1654 return bus_log_create_error(r);
1655
1656 r = sd_bus_message_open_container(m, 'v', argv[5]);
1657 if (r < 0)
1658 return bus_log_create_error(r);
1659
1660 p = argv+6;
1661 r = message_append_cmdline(m, argv[5], &p);
1662 if (r < 0)
1663 return r;
1664
1665 r = sd_bus_message_close_container(m);
1666 if (r < 0)
1667 return bus_log_create_error(r);
1668
1669 if (*p) {
1670 log_error("Too many parameters for signature.");
1671 return -EINVAL;
1672 }
1673
1674 r = sd_bus_call(bus, m, arg_timeout, &error, NULL);
1675 if (r < 0) {
1676 log_error("%s", bus_error_message(&error, r));
1677 return r;
1678 }
1679
1680 return 0;
1681 }
1682
1683 static int help(void) {
1684 printf("%s [OPTIONS...] {COMMAND} ...\n\n"
1685 "Introspect the bus.\n\n"
1686 " -h --help Show this help\n"
1687 " --version Show package version\n"
1688 " --no-pager Do not pipe output into a pager\n"
1689 " --no-legend Do not show the headers and footers\n"
1690 " --system Connect to system bus\n"
1691 " --user Connect to user bus\n"
1692 " -H --host=[USER@]HOST Operate on remote host\n"
1693 " -M --machine=CONTAINER Operate on local container\n"
1694 " --address=ADDRESS Connect to bus specified by address\n"
1695 " --show-machine Show machine ID column in list\n"
1696 " --unique Only show unique names\n"
1697 " --acquired Only show acquired names\n"
1698 " --activatable Only show activatable names\n"
1699 " --match=MATCH Only show matching messages\n"
1700 " --list Don't show tree, but simple object path list\n"
1701 " --quiet Don't show method call reply\n"
1702 " --verbose Show result values in long format\n"
1703 " --expect-reply=BOOL Expect a method call reply\n"
1704 " --auto-start=BOOL Auto-start destination service\n"
1705 " --allow-interactive-authorization=BOOL\n"
1706 " Allow interactive authorization for operation\n"
1707 " --timeout=SECS Maximum time to wait for method call completion\n"
1708 " --augment-creds=BOOL Extend credential data with data read from /proc/$PID\n\n"
1709 "Commands:\n"
1710 " list List bus names\n"
1711 " status [SERVICE] Show bus service, process or bus owner credentials\n"
1712 " monitor [SERVICE...] Show bus traffic\n"
1713 " capture [SERVICE...] Capture bus traffic as pcap\n"
1714 " tree [SERVICE...] Show object tree of service\n"
1715 " introspect SERVICE OBJECT [INTERFACE]\n"
1716 " call SERVICE OBJECT INTERFACE METHOD [SIGNATURE [ARGUMENT...]]\n"
1717 " Call a method\n"
1718 " get-property SERVICE OBJECT INTERFACE PROPERTY...\n"
1719 " Get property value\n"
1720 " set-property SERVICE OBJECT INTERFACE PROPERTY SIGNATURE ARGUMENT...\n"
1721 " Set property value\n"
1722 " help Show this help\n"
1723 , program_invocation_short_name);
1724
1725 return 0;
1726 }
1727
1728 static int parse_argv(int argc, char *argv[]) {
1729
1730 enum {
1731 ARG_VERSION = 0x100,
1732 ARG_NO_PAGER,
1733 ARG_NO_LEGEND,
1734 ARG_SYSTEM,
1735 ARG_USER,
1736 ARG_ADDRESS,
1737 ARG_MATCH,
1738 ARG_SHOW_MACHINE,
1739 ARG_UNIQUE,
1740 ARG_ACQUIRED,
1741 ARG_ACTIVATABLE,
1742 ARG_SIZE,
1743 ARG_LIST,
1744 ARG_VERBOSE,
1745 ARG_EXPECT_REPLY,
1746 ARG_AUTO_START,
1747 ARG_ALLOW_INTERACTIVE_AUTHORIZATION,
1748 ARG_TIMEOUT,
1749 ARG_AUGMENT_CREDS,
1750 };
1751
1752 static const struct option options[] = {
1753 { "help", no_argument, NULL, 'h' },
1754 { "version", no_argument, NULL, ARG_VERSION },
1755 { "no-pager", no_argument, NULL, ARG_NO_PAGER },
1756 { "no-legend", no_argument, NULL, ARG_NO_LEGEND },
1757 { "system", no_argument, NULL, ARG_SYSTEM },
1758 { "user", no_argument, NULL, ARG_USER },
1759 { "address", required_argument, NULL, ARG_ADDRESS },
1760 { "show-machine", no_argument, NULL, ARG_SHOW_MACHINE },
1761 { "unique", no_argument, NULL, ARG_UNIQUE },
1762 { "acquired", no_argument, NULL, ARG_ACQUIRED },
1763 { "activatable", no_argument, NULL, ARG_ACTIVATABLE },
1764 { "match", required_argument, NULL, ARG_MATCH },
1765 { "host", required_argument, NULL, 'H' },
1766 { "machine", required_argument, NULL, 'M' },
1767 { "size", required_argument, NULL, ARG_SIZE },
1768 { "list", no_argument, NULL, ARG_LIST },
1769 { "quiet", no_argument, NULL, 'q' },
1770 { "verbose", no_argument, NULL, ARG_VERBOSE },
1771 { "expect-reply", required_argument, NULL, ARG_EXPECT_REPLY },
1772 { "auto-start", required_argument, NULL, ARG_AUTO_START },
1773 { "allow-interactive-authorization", required_argument, NULL, ARG_ALLOW_INTERACTIVE_AUTHORIZATION },
1774 { "timeout", required_argument, NULL, ARG_TIMEOUT },
1775 { "augment-creds",required_argument, NULL, ARG_AUGMENT_CREDS},
1776 {},
1777 };
1778
1779 int c, r;
1780
1781 assert(argc >= 0);
1782 assert(argv);
1783
1784 while ((c = getopt_long(argc, argv, "hH:M:q", options, NULL)) >= 0)
1785
1786 switch (c) {
1787
1788 case 'h':
1789 return help();
1790
1791 case ARG_VERSION:
1792 puts(PACKAGE_STRING);
1793 puts(SYSTEMD_FEATURES);
1794 return 0;
1795
1796 case ARG_NO_PAGER:
1797 arg_no_pager = true;
1798 break;
1799
1800 case ARG_NO_LEGEND:
1801 arg_legend = false;
1802 break;
1803
1804 case ARG_USER:
1805 arg_user = true;
1806 break;
1807
1808 case ARG_SYSTEM:
1809 arg_user = false;
1810 break;
1811
1812 case ARG_ADDRESS:
1813 arg_address = optarg;
1814 break;
1815
1816 case ARG_SHOW_MACHINE:
1817 arg_show_machine = true;
1818 break;
1819
1820 case ARG_UNIQUE:
1821 arg_unique = true;
1822 break;
1823
1824 case ARG_ACQUIRED:
1825 arg_acquired = true;
1826 break;
1827
1828 case ARG_ACTIVATABLE:
1829 arg_activatable = true;
1830 break;
1831
1832 case ARG_MATCH:
1833 if (strv_extend(&arg_matches, optarg) < 0)
1834 return log_oom();
1835 break;
1836
1837 case ARG_SIZE: {
1838 off_t o;
1839
1840 r = parse_size(optarg, 0, &o);
1841 if (r < 0) {
1842 log_error("Failed to parse size: %s", optarg);
1843 return r;
1844 }
1845
1846 if ((off_t) (size_t) o != o) {
1847 log_error("Size out of range.");
1848 return -E2BIG;
1849 }
1850
1851 arg_snaplen = (size_t) o;
1852 break;
1853 }
1854
1855 case ARG_LIST:
1856 arg_list = true;
1857 break;
1858
1859 case 'H':
1860 arg_transport = BUS_TRANSPORT_REMOTE;
1861 arg_host = optarg;
1862 break;
1863
1864 case 'M':
1865 arg_transport = BUS_TRANSPORT_MACHINE;
1866 arg_host = optarg;
1867 break;
1868
1869 case 'q':
1870 arg_quiet = true;
1871 break;
1872
1873 case ARG_VERBOSE:
1874 arg_verbose = true;
1875 break;
1876
1877 case ARG_EXPECT_REPLY:
1878 r = parse_boolean(optarg);
1879 if (r < 0) {
1880 log_error("Failed to parse --expect-reply= parameter.");
1881 return r;
1882 }
1883
1884 arg_expect_reply = !!r;
1885 break;
1886
1887
1888 case ARG_AUTO_START:
1889 r = parse_boolean(optarg);
1890 if (r < 0) {
1891 log_error("Failed to parse --auto-start= parameter.");
1892 return r;
1893 }
1894
1895 arg_auto_start = !!r;
1896 break;
1897
1898
1899 case ARG_ALLOW_INTERACTIVE_AUTHORIZATION:
1900 r = parse_boolean(optarg);
1901 if (r < 0) {
1902 log_error("Failed to parse --allow-interactive-authorization= parameter.");
1903 return r;
1904 }
1905
1906 arg_allow_interactive_authorization = !!r;
1907 break;
1908
1909 case ARG_TIMEOUT:
1910 r = parse_sec(optarg, &arg_timeout);
1911 if (r < 0) {
1912 log_error("Failed to parse --timeout= parameter.");
1913 return r;
1914 }
1915
1916 break;
1917
1918 case ARG_AUGMENT_CREDS:
1919 r = parse_boolean(optarg);
1920 if (r < 0) {
1921 log_error("Failed to parse --augment-creds= parameter.");
1922 return r;
1923 }
1924
1925 arg_augment_creds = !!r;
1926 break;
1927
1928 case '?':
1929 return -EINVAL;
1930
1931 default:
1932 assert_not_reached("Unhandled option");
1933 }
1934
1935 return 1;
1936 }
1937
1938 static int busctl_main(sd_bus *bus, int argc, char *argv[]) {
1939 assert(bus);
1940
1941 if (optind >= argc ||
1942 streq(argv[optind], "list"))
1943 return list_bus_names(bus, argv + optind);
1944
1945 if (streq(argv[optind], "monitor"))
1946 return monitor(bus, argv + optind, message_dump);
1947
1948 if (streq(argv[optind], "capture"))
1949 return capture(bus, argv + optind);
1950
1951 if (streq(argv[optind], "status"))
1952 return status(bus, argv + optind);
1953
1954 if (streq(argv[optind], "tree"))
1955 return tree(bus, argv + optind);
1956
1957 if (streq(argv[optind], "introspect"))
1958 return introspect(bus, argv + optind);
1959
1960 if (streq(argv[optind], "call"))
1961 return call(bus, argv + optind);
1962
1963 if (streq(argv[optind], "get-property"))
1964 return get_property(bus, argv + optind);
1965
1966 if (streq(argv[optind], "set-property"))
1967 return set_property(bus, argv + optind);
1968
1969 if (streq(argv[optind], "help"))
1970 return help();
1971
1972 log_error("Unknown command '%s'", argv[optind]);
1973 return -EINVAL;
1974 }
1975
1976 int main(int argc, char *argv[]) {
1977 _cleanup_bus_flush_close_unref_ sd_bus *bus = NULL;
1978 int r;
1979
1980 log_parse_environment();
1981 log_open();
1982
1983 r = parse_argv(argc, argv);
1984 if (r <= 0)
1985 goto finish;
1986
1987 r = sd_bus_new(&bus);
1988 if (r < 0) {
1989 log_error_errno(r, "Failed to allocate bus: %m");
1990 goto finish;
1991 }
1992
1993 if (streq_ptr(argv[optind], "monitor") ||
1994 streq_ptr(argv[optind], "capture")) {
1995
1996 r = sd_bus_set_monitor(bus, true);
1997 if (r < 0) {
1998 log_error_errno(r, "Failed to set monitor mode: %m");
1999 goto finish;
2000 }
2001
2002 r = sd_bus_negotiate_creds(bus, true, _SD_BUS_CREDS_ALL);
2003 if (r < 0) {
2004 log_error_errno(r, "Failed to enable credentials: %m");
2005 goto finish;
2006 }
2007
2008 r = sd_bus_negotiate_timestamp(bus, true);
2009 if (r < 0) {
2010 log_error_errno(r, "Failed to enable timestamps: %m");
2011 goto finish;
2012 }
2013
2014 r = sd_bus_negotiate_fds(bus, true);
2015 if (r < 0) {
2016 log_error_errno(r, "Failed to enable fds: %m");
2017 goto finish;
2018 }
2019 }
2020
2021 if (arg_address)
2022 r = sd_bus_set_address(bus, arg_address);
2023 else {
2024 r = sd_bus_set_bus_client(bus, true);
2025 if (r < 0) {
2026 log_error_errno(r, "Failed to set bus client: %m");
2027 goto finish;
2028 }
2029
2030 switch (arg_transport) {
2031
2032 case BUS_TRANSPORT_LOCAL:
2033 if (arg_user) {
2034 bus->is_user = true;
2035 r = bus_set_address_user(bus);
2036 } else {
2037 bus->is_system = true;
2038 r = bus_set_address_system(bus);
2039 }
2040 break;
2041
2042 case BUS_TRANSPORT_REMOTE:
2043 r = bus_set_address_system_remote(bus, arg_host);
2044 break;
2045
2046 case BUS_TRANSPORT_MACHINE:
2047 r = bus_set_address_system_machine(bus, arg_host);
2048 break;
2049
2050 default:
2051 assert_not_reached("Hmm, unknown transport type.");
2052 }
2053 }
2054 if (r < 0) {
2055 log_error_errno(r, "Failed to set address: %m");
2056 goto finish;
2057 }
2058
2059 r = sd_bus_start(bus);
2060 if (r < 0) {
2061 log_error_errno(r, "Failed to connect to bus: %m");
2062 goto finish;
2063 }
2064
2065 r = busctl_main(bus, argc, argv);
2066
2067 finish:
2068 pager_close();
2069
2070 strv_free(arg_matches);
2071
2072 return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
2073 }
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