This source file includes following definitions.
- cib_client_noop
- cib_client_ping
- cib_client_query
- cib_client_query_from
- is_primary
- set_secondary
- set_all_secondary
- set_primary
- cib_client_bump_epoch
- cib_client_upgrade
- cib_client_sync
- cib_client_sync_from
- cib_client_create
- cib_client_modify
- cib_client_update
- cib_client_replace
- cib_client_delete
- cib_client_delete_absolute
- cib_client_erase
- cib_destroy_op_callback
- destroy_op_callback_table
- get_shadow_file
- cib_shadow_new
- cib_new_no_shadow
- cib_new
- cib_new_variant
- cib_free_notify
- cib_free_callbacks
- cib_delete
- cib_client_set_op_callback
- cib_client_add_notify_callback
- get_notify_list_event_count
- cib_client_del_notify_callback
- ciblib_GCompareFunc
- cib_async_timeout_handler
- cib_client_register_callback
- cib_client_register_callback_full
- remove_cib_op_callback
- num_cib_op_callbacks
- cib_dump_pending_op
- cib_dump_pending_callbacks
- cib__lookup_id
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10 #include <crm_internal.h>
11 #include <unistd.h>
12 #include <stdlib.h>
13 #include <stdio.h>
14 #include <stdarg.h>
15 #include <string.h>
16 #include <pwd.h>
17
18 #include <sys/stat.h>
19 #include <sys/types.h>
20
21 #include <glib.h>
22
23 #include <crm/crm.h>
24 #include <crm/cib/internal.h>
25 #include <crm/msg_xml.h>
26 #include <crm/common/xml.h>
27
28 static GHashTable *cib_op_callback_table = NULL;
29
30 int cib_client_set_op_callback(cib_t * cib, void (*callback) (const xmlNode * msg, int call_id,
31 int rc, xmlNode * output));
32
33 int cib_client_add_notify_callback(cib_t * cib, const char *event,
34 void (*callback) (const char *event, xmlNode * msg));
35
36 int cib_client_del_notify_callback(cib_t * cib, const char *event,
37 void (*callback) (const char *event, xmlNode * msg));
38
39 gint ciblib_GCompareFunc(gconstpointer a, gconstpointer b);
40
41 #define op_common(cib) do { \
42 if(cib == NULL) { \
43 return -EINVAL; \
44 } else if(cib->delegate_fn == NULL) { \
45 return -EPROTONOSUPPORT; \
46 } \
47 } while(0)
48
49 static int
50 cib_client_noop(cib_t * cib, int call_options)
51 {
52 op_common(cib);
53 return cib_internal_op(cib, PCMK__CIB_REQUEST_NOOP, NULL, NULL, NULL, NULL,
54 call_options, NULL);
55 }
56
57 static int
58 cib_client_ping(cib_t * cib, xmlNode ** output_data, int call_options)
59 {
60 op_common(cib);
61 return cib_internal_op(cib, CRM_OP_PING, NULL, NULL, NULL, output_data, call_options, NULL);
62 }
63
64 static int
65 cib_client_query(cib_t * cib, const char *section, xmlNode ** output_data, int call_options)
66 {
67 return cib->cmds->query_from(cib, NULL, section, output_data, call_options);
68 }
69
70 static int
71 cib_client_query_from(cib_t * cib, const char *host, const char *section,
72 xmlNode ** output_data, int call_options)
73 {
74 op_common(cib);
75 return cib_internal_op(cib, PCMK__CIB_REQUEST_QUERY, host, section, NULL,
76 output_data, call_options, NULL);
77 }
78
79 static int
80 is_primary(cib_t *cib)
81 {
82 op_common(cib);
83 return cib_internal_op(cib, PCMK__CIB_REQUEST_IS_PRIMARY, NULL, NULL, NULL,
84 NULL, cib_scope_local|cib_sync_call, NULL);
85 }
86
87 static int
88 set_secondary(cib_t *cib, int call_options)
89 {
90 op_common(cib);
91 return cib_internal_op(cib, PCMK__CIB_REQUEST_SECONDARY, NULL, NULL, NULL,
92 NULL, call_options, NULL);
93 }
94
95 static int
96 set_all_secondary(cib_t * cib, int call_options)
97 {
98 return -EPROTONOSUPPORT;
99 }
100
101 static int
102 set_primary(cib_t *cib, int call_options)
103 {
104 op_common(cib);
105 crm_trace("Adding cib_scope_local to options");
106 return cib_internal_op(cib, PCMK__CIB_REQUEST_PRIMARY, NULL, NULL, NULL,
107 NULL, call_options|cib_scope_local, NULL);
108 }
109
110 static int
111 cib_client_bump_epoch(cib_t * cib, int call_options)
112 {
113 op_common(cib);
114 return cib_internal_op(cib, PCMK__CIB_REQUEST_BUMP, NULL, NULL, NULL, NULL,
115 call_options, NULL);
116 }
117
118 static int
119 cib_client_upgrade(cib_t * cib, int call_options)
120 {
121 op_common(cib);
122 return cib_internal_op(cib, PCMK__CIB_REQUEST_UPGRADE, NULL, NULL, NULL,
123 NULL, call_options, NULL);
124 }
125
126 static int
127 cib_client_sync(cib_t * cib, const char *section, int call_options)
128 {
129 return cib->cmds->sync_from(cib, NULL, section, call_options);
130 }
131
132 static int
133 cib_client_sync_from(cib_t * cib, const char *host, const char *section, int call_options)
134 {
135 op_common(cib);
136 return cib_internal_op(cib, PCMK__CIB_REQUEST_SYNC_TO_ALL, host, section,
137 NULL, NULL, call_options, NULL);
138 }
139
140 static int
141 cib_client_create(cib_t * cib, const char *section, xmlNode * data, int call_options)
142 {
143 op_common(cib);
144 return cib_internal_op(cib, PCMK__CIB_REQUEST_CREATE, NULL, section, data,
145 NULL, call_options, NULL);
146 }
147
148 static int
149 cib_client_modify(cib_t * cib, const char *section, xmlNode * data, int call_options)
150 {
151 op_common(cib);
152 return cib_internal_op(cib, PCMK__CIB_REQUEST_MODIFY, NULL, section, data,
153 NULL, call_options, NULL);
154 }
155
156 static int
157 cib_client_update(cib_t * cib, const char *section, xmlNode * data, int call_options)
158 {
159 op_common(cib);
160 return cib_internal_op(cib, PCMK__CIB_REQUEST_MODIFY, NULL, section, data,
161 NULL, call_options, NULL);
162 }
163
164 static int
165 cib_client_replace(cib_t * cib, const char *section, xmlNode * data, int call_options)
166 {
167 op_common(cib);
168 return cib_internal_op(cib, PCMK__CIB_REQUEST_REPLACE, NULL, section, data,
169 NULL, call_options, NULL);
170 }
171
172 static int
173 cib_client_delete(cib_t * cib, const char *section, xmlNode * data, int call_options)
174 {
175 op_common(cib);
176 return cib_internal_op(cib, PCMK__CIB_REQUEST_DELETE, NULL, section, data,
177 NULL, call_options, NULL);
178 }
179
180 static int
181 cib_client_delete_absolute(cib_t * cib, const char *section, xmlNode * data, int call_options)
182 {
183 op_common(cib);
184 return cib_internal_op(cib, PCMK__CIB_REQUEST_ABS_DELETE, NULL, section,
185 data, NULL, call_options, NULL);
186 }
187
188 static int
189 cib_client_erase(cib_t * cib, xmlNode ** output_data, int call_options)
190 {
191 op_common(cib);
192 return cib_internal_op(cib, PCMK__CIB_REQUEST_ERASE, NULL, NULL, NULL,
193 output_data, call_options, NULL);
194 }
195
196 static void
197 cib_destroy_op_callback(gpointer data)
198 {
199 cib_callback_client_t *blob = data;
200
201 if (blob->timer && blob->timer->ref > 0) {
202 g_source_remove(blob->timer->ref);
203 }
204 free(blob->timer);
205
206 if (blob->user_data && blob->free_func) {
207 blob->free_func(blob->user_data);
208 }
209
210 free(blob);
211 }
212
213 static void
214 destroy_op_callback_table(void)
215 {
216 if (cib_op_callback_table != NULL) {
217 g_hash_table_destroy(cib_op_callback_table);
218 cib_op_callback_table = NULL;
219 }
220 }
221
222 char *
223 get_shadow_file(const char *suffix)
224 {
225 char *cib_home = NULL;
226 char *fullname = NULL;
227 char *name = crm_strdup_printf("shadow.%s", suffix);
228 const char *dir = getenv("CIB_shadow_dir");
229
230 if (dir == NULL) {
231 uid_t uid = geteuid();
232 struct passwd *pwent = getpwuid(uid);
233 const char *user = NULL;
234
235 if (pwent) {
236 user = pwent->pw_name;
237 } else {
238 user = getenv("USER");
239 crm_perror(LOG_ERR,
240 "Assuming %s because cannot get user details for user ID %d",
241 (user? user : "unprivileged user"), uid);
242 }
243
244 if (pcmk__strcase_any_of(user, "root", CRM_DAEMON_USER, NULL)) {
245 dir = CRM_CONFIG_DIR;
246
247 } else {
248 const char *home = NULL;
249
250 if ((home = getenv("HOME")) == NULL) {
251 if (pwent) {
252 home = pwent->pw_dir;
253 }
254 }
255
256 dir = pcmk__get_tmpdir();
257 if (home && home[0] == '/') {
258 int rc = 0;
259
260 cib_home = crm_strdup_printf("%s/.cib", home);
261
262 rc = mkdir(cib_home, 0700);
263 if (rc < 0 && errno != EEXIST) {
264 crm_perror(LOG_ERR, "Couldn't create user-specific shadow directory: %s",
265 cib_home);
266 errno = 0;
267
268 } else {
269 dir = cib_home;
270 }
271 }
272 }
273 }
274
275 fullname = crm_strdup_printf("%s/%s", dir, name);
276 free(cib_home);
277 free(name);
278
279 return fullname;
280 }
281
282 cib_t *
283 cib_shadow_new(const char *shadow)
284 {
285 cib_t *new_cib = NULL;
286 char *shadow_file = NULL;
287
288 CRM_CHECK(shadow != NULL, return NULL);
289
290 shadow_file = get_shadow_file(shadow);
291 new_cib = cib_file_new(shadow_file);
292 free(shadow_file);
293
294 return new_cib;
295 }
296
297 cib_t *
298 cib_new_no_shadow(void)
299 {
300 unsetenv("CIB_shadow");
301 return cib_new();
302 }
303
304 cib_t *
305 cib_new(void)
306 {
307 const char *value = getenv("CIB_shadow");
308 int port;
309
310 if (value && value[0] != 0) {
311 return cib_shadow_new(value);
312 }
313
314 value = getenv("CIB_file");
315 if (value) {
316 return cib_file_new(value);
317 }
318
319 value = getenv("CIB_port");
320 if (value) {
321 gboolean encrypted = TRUE;
322 const char *server = getenv("CIB_server");
323 const char *user = getenv("CIB_user");
324 const char *pass = getenv("CIB_passwd");
325
326
327
328
329
330
331 pcmk__scan_port(value, &port);
332
333 value = getenv("CIB_encrypted");
334 if (value && crm_is_true(value) == FALSE) {
335 crm_info("Disabling TLS");
336 encrypted = FALSE;
337 }
338
339 if (user == NULL) {
340 user = CRM_DAEMON_USER;
341 crm_info("Defaulting to user: %s", user);
342 }
343
344 if (server == NULL) {
345 server = "localhost";
346 crm_info("Defaulting to localhost");
347 }
348
349 return cib_remote_new(server, user, pass, port, encrypted);
350 }
351
352 return cib_native_new();
353 }
354
355
356
357
358
359
360
361
362
363
364 cib_t *
365 cib_new_variant(void)
366 {
367 cib_t *new_cib = NULL;
368
369 new_cib = calloc(1, sizeof(cib_t));
370
371 if (new_cib == NULL) {
372 return NULL;
373 }
374
375 remove_cib_op_callback(0, TRUE);
376
377 new_cib->call_id = 1;
378 new_cib->variant = cib_undefined;
379
380 new_cib->type = cib_no_connection;
381 new_cib->state = cib_disconnected;
382
383 new_cib->op_callback = NULL;
384 new_cib->variant_opaque = NULL;
385 new_cib->notify_list = NULL;
386
387
388 new_cib->cmds = calloc(1, sizeof(cib_api_operations_t));
389
390 if (new_cib->cmds == NULL) {
391 free(new_cib);
392 return NULL;
393 }
394
395 new_cib->cmds->set_op_callback = cib_client_set_op_callback;
396 new_cib->cmds->add_notify_callback = cib_client_add_notify_callback;
397 new_cib->cmds->del_notify_callback = cib_client_del_notify_callback;
398 new_cib->cmds->register_callback = cib_client_register_callback;
399 new_cib->cmds->register_callback_full = cib_client_register_callback_full;
400
401 new_cib->cmds->noop = cib_client_noop;
402 new_cib->cmds->ping = cib_client_ping;
403 new_cib->cmds->query = cib_client_query;
404 new_cib->cmds->sync = cib_client_sync;
405
406 new_cib->cmds->query_from = cib_client_query_from;
407 new_cib->cmds->sync_from = cib_client_sync_from;
408
409 new_cib->cmds->is_master = is_primary;
410
411 new_cib->cmds->set_primary = set_primary;
412 new_cib->cmds->set_master = set_primary;
413
414 new_cib->cmds->set_secondary = set_secondary;
415 new_cib->cmds->set_slave = set_secondary;
416
417 new_cib->cmds->set_slave_all = set_all_secondary;
418
419 new_cib->cmds->upgrade = cib_client_upgrade;
420 new_cib->cmds->bump_epoch = cib_client_bump_epoch;
421
422 new_cib->cmds->create = cib_client_create;
423 new_cib->cmds->modify = cib_client_modify;
424 new_cib->cmds->update = cib_client_update;
425 new_cib->cmds->replace = cib_client_replace;
426 new_cib->cmds->remove = cib_client_delete;
427 new_cib->cmds->erase = cib_client_erase;
428
429 new_cib->cmds->delete_absolute = cib_client_delete_absolute;
430
431 return new_cib;
432 }
433
434 void
435 cib_free_notify(cib_t *cib)
436 {
437
438 if (cib) {
439 GList *list = cib->notify_list;
440
441 while (list != NULL) {
442 cib_notify_client_t *client = g_list_nth_data(list, 0);
443
444 list = g_list_remove(list, client);
445 free(client);
446 }
447 cib->notify_list = NULL;
448 }
449 }
450
451
452
453
454
455 void
456 cib_free_callbacks(cib_t *cib)
457 {
458 cib_free_notify(cib);
459
460 destroy_op_callback_table();
461 }
462
463
464
465
466
467
468 void
469 cib_delete(cib_t *cib)
470 {
471 cib_free_callbacks(cib);
472 if (cib) {
473 cib->cmds->free(cib);
474 }
475 }
476
477 int
478 cib_client_set_op_callback(cib_t * cib, void (*callback) (const xmlNode * msg, int call_id,
479 int rc, xmlNode * output))
480 {
481 if (callback == NULL) {
482 crm_info("Un-Setting operation callback");
483
484 } else {
485 crm_trace("Setting operation callback");
486 }
487 cib->op_callback = callback;
488 return pcmk_ok;
489 }
490
491 int
492 cib_client_add_notify_callback(cib_t * cib, const char *event,
493 void (*callback) (const char *event, xmlNode * msg))
494 {
495 GList *list_item = NULL;
496 cib_notify_client_t *new_client = NULL;
497
498 if (cib->variant != cib_native && cib->variant != cib_remote) {
499 return -EPROTONOSUPPORT;
500 }
501
502 crm_trace("Adding callback for %s events (%d)", event, g_list_length(cib->notify_list));
503
504 new_client = calloc(1, sizeof(cib_notify_client_t));
505 new_client->event = event;
506 new_client->callback = callback;
507
508 list_item = g_list_find_custom(cib->notify_list, new_client, ciblib_GCompareFunc);
509
510 if (list_item != NULL) {
511 crm_warn("Callback already present");
512 free(new_client);
513 return -EINVAL;
514
515 } else {
516 cib->notify_list = g_list_append(cib->notify_list, new_client);
517
518 cib->cmds->register_notification(cib, event, 1);
519
520 crm_trace("Callback added (%d)", g_list_length(cib->notify_list));
521 }
522 return pcmk_ok;
523 }
524
525 static int
526 get_notify_list_event_count(cib_t * cib, const char *event)
527 {
528 GList *l = NULL;
529 int count = 0;
530
531 for (l = g_list_first(cib->notify_list); l; l = g_list_next(l)) {
532 cib_notify_client_t *client = (cib_notify_client_t *)l->data;
533
534 if (strcmp(client->event, event) == 0) {
535 count++;
536 }
537 }
538 crm_trace("event(%s) count : %d", event, count);
539 return count;
540 }
541
542 int
543 cib_client_del_notify_callback(cib_t * cib, const char *event,
544 void (*callback) (const char *event, xmlNode * msg))
545 {
546 GList *list_item = NULL;
547 cib_notify_client_t *new_client = NULL;
548
549 if (cib->variant != cib_native && cib->variant != cib_remote) {
550 return -EPROTONOSUPPORT;
551 }
552
553 if (get_notify_list_event_count(cib, event) == 0) {
554 crm_debug("The callback of the event does not exist(%s)", event);
555 return pcmk_ok;
556 }
557
558 crm_debug("Removing callback for %s events", event);
559
560 new_client = calloc(1, sizeof(cib_notify_client_t));
561 new_client->event = event;
562 new_client->callback = callback;
563
564 list_item = g_list_find_custom(cib->notify_list, new_client, ciblib_GCompareFunc);
565
566 if (list_item != NULL) {
567 cib_notify_client_t *list_client = list_item->data;
568
569 cib->notify_list = g_list_remove(cib->notify_list, list_client);
570 free(list_client);
571
572 crm_trace("Removed callback");
573
574 } else {
575 crm_trace("Callback not present");
576 }
577
578 if (get_notify_list_event_count(cib, event) == 0) {
579
580 cib->cmds->register_notification(cib, event, 0);
581 }
582
583 free(new_client);
584 return pcmk_ok;
585 }
586
587 gint
588 ciblib_GCompareFunc(gconstpointer a, gconstpointer b)
589 {
590 int rc = 0;
591 const cib_notify_client_t *a_client = a;
592 const cib_notify_client_t *b_client = b;
593
594 CRM_CHECK(a_client->event != NULL && b_client->event != NULL, return 0);
595 rc = strcmp(a_client->event, b_client->event);
596 if (rc == 0) {
597 if (a_client->callback == b_client->callback) {
598 return 0;
599 } else if (((long)a_client->callback) < ((long)b_client->callback)) {
600 crm_trace("callbacks for %s are not equal: %p < %p",
601 a_client->event, a_client->callback, b_client->callback);
602 return -1;
603 }
604 crm_trace("callbacks for %s are not equal: %p > %p",
605 a_client->event, a_client->callback, b_client->callback);
606 return 1;
607 }
608 return rc;
609 }
610
611 static gboolean
612 cib_async_timeout_handler(gpointer data)
613 {
614 struct timer_rec_s *timer = data;
615
616 crm_debug("Async call %d timed out after %ds", timer->call_id, timer->timeout);
617 cib_native_callback(timer->cib, NULL, timer->call_id, -ETIME);
618
619
620
621
622 return TRUE;
623 }
624
625 gboolean
626 cib_client_register_callback(cib_t * cib, int call_id, int timeout, gboolean only_success,
627 void *user_data, const char *callback_name,
628 void (*callback) (xmlNode *, int, int, xmlNode *, void *))
629 {
630 return cib_client_register_callback_full(cib, call_id, timeout,
631 only_success, user_data,
632 callback_name, callback, NULL);
633 }
634
635 gboolean
636 cib_client_register_callback_full(cib_t *cib, int call_id, int timeout,
637 gboolean only_success, void *user_data,
638 const char *callback_name,
639 void (*callback)(xmlNode *, int, int,
640 xmlNode *, void *),
641 void (*free_func)(void *))
642 {
643 cib_callback_client_t *blob = NULL;
644
645 if (call_id < 0) {
646 if (only_success == FALSE) {
647 callback(NULL, call_id, call_id, NULL, user_data);
648 } else {
649 crm_warn("CIB call failed: %s", pcmk_strerror(call_id));
650 }
651 if (user_data && free_func) {
652 free_func(user_data);
653 }
654 return FALSE;
655 }
656
657 blob = calloc(1, sizeof(cib_callback_client_t));
658 blob->id = callback_name;
659 blob->only_success = only_success;
660 blob->user_data = user_data;
661 blob->callback = callback;
662 blob->free_func = free_func;
663
664 if (timeout > 0) {
665 struct timer_rec_s *async_timer = NULL;
666
667 async_timer = calloc(1, sizeof(struct timer_rec_s));
668 blob->timer = async_timer;
669
670 async_timer->cib = cib;
671 async_timer->call_id = call_id;
672 async_timer->timeout = timeout * 1000;
673 async_timer->ref =
674 g_timeout_add(async_timer->timeout, cib_async_timeout_handler, async_timer);
675 }
676
677 crm_trace("Adding callback %s for call %d", callback_name, call_id);
678 pcmk__intkey_table_insert(cib_op_callback_table, call_id, blob);
679
680 return TRUE;
681 }
682
683 void
684 remove_cib_op_callback(int call_id, gboolean all_callbacks)
685 {
686 if (all_callbacks) {
687 destroy_op_callback_table();
688 cib_op_callback_table = pcmk__intkey_table(cib_destroy_op_callback);
689 } else {
690 pcmk__intkey_table_remove(cib_op_callback_table, call_id);
691 }
692 }
693
694 int
695 num_cib_op_callbacks(void)
696 {
697 if (cib_op_callback_table == NULL) {
698 return 0;
699 }
700 return g_hash_table_size(cib_op_callback_table);
701 }
702
703 static void
704 cib_dump_pending_op(gpointer key, gpointer value, gpointer user_data)
705 {
706 int call = GPOINTER_TO_INT(key);
707 cib_callback_client_t *blob = value;
708
709 crm_debug("Call %d (%s): pending", call, pcmk__s(blob->id, "without ID"));
710 }
711
712 void
713 cib_dump_pending_callbacks(void)
714 {
715 if (cib_op_callback_table == NULL) {
716 return;
717 }
718 return g_hash_table_foreach(cib_op_callback_table, cib_dump_pending_op, NULL);
719 }
720
721 cib_callback_client_t*
722 cib__lookup_id (int call_id)
723 {
724 return pcmk__intkey_table_lookup(cib_op_callback_table, call_id);
725 }