1 /*
2 * SysDB - src/core/store_lookup.c
3 * Copyright (C) 2014 Sebastian 'tokkee' Harl <sh@tokkee.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
17 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
19 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
28 /*
29 * This module implements operators which may be used to select contents of
30 * the store by matching various attributes of the stored objects. For now, a
31 * simple full table scan is supported only.
32 */
34 #if HAVE_CONFIG_H
35 # include "config.h"
36 #endif /* HAVE_CONFIG_H */
38 #include "sysdb.h"
39 #include "core/store-private.h"
40 #include "core/object.h"
42 #include <assert.h>
44 #include <sys/types.h>
45 #include <regex.h>
47 #include <stdlib.h>
48 #include <string.h>
50 #include <limits.h>
52 /*
53 * matcher implementations
54 */
56 /*
57 * cmp_expr:
58 * Compare two values using the specified matcher operator. If strcmp_fallback
59 * is enabled, compare the string values in case of a type mismatch.
60 */
61 static int
62 cmp_value(int op, sdb_data_t *v1, sdb_data_t *v2, _Bool strcmp_fallback)
63 {
64 int status;
66 if (sdb_data_isnull(v1) || (sdb_data_isnull(v2)))
67 status = INT_MAX;
68 else if (v1->type == v2->type)
69 status = sdb_data_cmp(v1, v2);
70 else if (! strcmp_fallback)
71 status = INT_MAX;
72 else
73 status = sdb_data_strcmp(v1, v2);
75 if (status == INT_MAX)
76 return 0;
77 else if (op == MATCHER_LT)
78 return status < 0;
79 else if (op == MATCHER_LE)
80 return status <= 0;
81 else if (op == MATCHER_EQ)
82 return status == 0;
83 else if (op == MATCHER_NE)
84 return status != 0;
85 else if (op == MATCHER_GE)
86 return status >= 0;
87 else if (op == MATCHER_GT)
88 return status > 0;
89 return 0;
90 } /* cmp_value */
92 static int
93 match_logical(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
94 sdb_store_matcher_t *filter)
95 {
96 int status;
98 assert((m->type == MATCHER_AND) || (m->type == MATCHER_OR));
99 assert(OP_M(m)->left && OP_M(m)->right);
101 status = sdb_store_matcher_matches(OP_M(m)->left, obj, filter);
103 /* lazy evaluation */
104 if ((! status) && (m->type == MATCHER_AND))
105 return status;
106 else if (status && (m->type == MATCHER_OR))
107 return status;
109 return sdb_store_matcher_matches(OP_M(m)->right, obj, filter);
110 } /* match_logical */
112 static int
113 match_unary(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
114 sdb_store_matcher_t *filter)
115 {
116 assert(m->type == MATCHER_NOT);
117 assert(UOP_M(m)->op);
119 return !sdb_store_matcher_matches(UOP_M(m)->op, obj, filter);
120 } /* match_unary */
122 static int
123 match_iter(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
124 sdb_store_matcher_t *filter)
125 {
126 sdb_avltree_iter_t *iter = NULL;
127 int status;
128 int all = (int)(m->type == MATCHER_ALL);
130 assert((m->type == MATCHER_ANY) || (m->type == MATCHER_ALL));
132 if (obj->type == SDB_HOST) {
133 if (ITER_M(m)->type == SDB_SERVICE)
134 iter = sdb_avltree_get_iter(HOST(obj)->services);
135 else if (ITER_M(m)->type == SDB_METRIC)
136 iter = sdb_avltree_get_iter(HOST(obj)->metrics);
137 else if (ITER_M(m)->type == SDB_ATTRIBUTE)
138 iter = sdb_avltree_get_iter(HOST(obj)->attributes);
139 } else if (obj->type == SDB_SERVICE) {
140 if (ITER_M(m)->type == SDB_ATTRIBUTE)
141 iter = sdb_avltree_get_iter(SVC(obj)->attributes);
142 } else if (obj->type == SDB_METRIC) {
143 if (ITER_M(m)->type == SDB_ATTRIBUTE)
144 iter = sdb_avltree_get_iter(METRIC(obj)->attributes);
145 }
147 status = all;
148 while (sdb_avltree_iter_has_next(iter)) {
149 sdb_store_obj_t *child = STORE_OBJ(sdb_avltree_iter_get_next(iter));
150 if (filter && (! sdb_store_matcher_matches(filter, child, NULL)))
151 continue;
153 if (sdb_store_matcher_matches(ITER_M(m)->m, child, filter)) {
154 if (! all) {
155 status = 1;
156 break;
157 }
158 } else if (all) {
159 status = 0;
160 break;
161 }
162 }
163 sdb_avltree_iter_destroy(iter);
164 return status;
165 } /* match_iter */
167 static int
168 match_cmp(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
169 sdb_store_matcher_t *filter)
170 {
171 sdb_store_expr_t *e1 = CMP_M(m)->left;
172 sdb_store_expr_t *e2 = CMP_M(m)->right;
173 sdb_data_t v1 = SDB_DATA_INIT, v2 = SDB_DATA_INIT;
174 int status;
176 assert((m->type == MATCHER_LT)
177 || (m->type == MATCHER_LE)
178 || (m->type == MATCHER_EQ)
179 || (m->type == MATCHER_NE)
180 || (m->type == MATCHER_GE)
181 || (m->type == MATCHER_GT));
183 if (sdb_store_expr_eval(e1, obj, &v1, filter))
184 return 0;
185 if (sdb_store_expr_eval(e2, obj, &v2, filter)) {
186 sdb_data_free_datum(&v1);
187 return 0;
188 }
190 status = cmp_value(m->type, &v1, &v2,
191 (e1->data_type) < 0 || (e2->data_type < 0));
193 sdb_data_free_datum(&v1);
194 sdb_data_free_datum(&v2);
195 return status;
196 } /* match_cmp */
198 static int
199 match_in(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
200 sdb_store_matcher_t *filter)
201 {
202 sdb_data_t value = SDB_DATA_INIT, array = SDB_DATA_INIT;
203 int status = 1;
205 assert(m->type == MATCHER_IN);
207 if ((sdb_store_expr_eval(CMP_M(m)->left, obj, &value, filter))
208 || (sdb_store_expr_eval(CMP_M(m)->right, obj, &array, filter)))
209 status = 0;
211 if (status)
212 status = sdb_data_inarray(&value, &array);
214 sdb_data_free_datum(&value);
215 sdb_data_free_datum(&array);
216 return status;
217 } /* match_in */
219 static int
220 match_regex(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
221 sdb_store_matcher_t *filter)
222 {
223 sdb_data_t v = SDB_DATA_INIT;
224 int status = 0;
226 regex_t regex;
227 _Bool free_regex = 0;
229 assert((m->type == MATCHER_REGEX)
230 || (m->type == MATCHER_NREGEX));
232 if (! CMP_M(m)->right->type) {
233 assert(CMP_M(m)->right->data.type == SDB_TYPE_REGEX);
234 regex = CMP_M(m)->right->data.data.re.regex;
235 }
236 else {
237 sdb_data_t tmp = SDB_DATA_INIT;
238 char *raw;
240 if (sdb_store_expr_eval(CMP_M(m)->right, obj, &tmp, filter))
241 return 0;
243 if (tmp.type != SDB_TYPE_STRING) {
244 sdb_data_free_datum(&tmp);
245 return 0;
246 }
248 raw = tmp.data.string;
249 if (sdb_data_parse(raw, SDB_TYPE_REGEX, &tmp)) {
250 free(raw);
251 return 0;
252 }
254 regex = tmp.data.re.regex;
255 free_regex = 1;
256 free(tmp.data.re.raw);
257 free(raw);
258 }
260 if ((sdb_store_expr_eval(CMP_M(m)->left, obj, &v, filter))
261 || (sdb_data_isnull(&v)))
262 status = 0;
263 else {
264 char value[sdb_data_strlen(&v) + 1];
265 if (sdb_data_format(&v, value, sizeof(value), SDB_UNQUOTED) < 0)
266 status = 0;
267 else if (! regexec(®ex, value, 0, NULL, 0))
268 status = 1;
269 }
271 if (free_regex)
272 regfree(®ex);
273 sdb_data_free_datum(&v);
274 if (m->type == MATCHER_NREGEX)
275 return !status;
276 return status;
277 } /* match_regex */
279 static int
280 match_isnull(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
281 sdb_store_matcher_t *filter)
282 {
283 sdb_data_t v = SDB_DATA_INIT;
284 int status;
286 assert((m->type == MATCHER_ISNULL) || (m->type == MATCHER_ISNNULL));
288 /* TODO: this might hide real errors;
289 * improve error reporting and propagation */
290 if (sdb_store_expr_eval(ISNULL_M(m)->expr, obj, &v, filter)
291 || sdb_data_isnull(&v))
292 status = 1;
293 else
294 status = 0;
296 sdb_data_free_datum(&v);
297 if (m->type == MATCHER_ISNNULL)
298 return !status;
299 return status;
300 } /* match_isnull */
302 typedef int (*matcher_cb)(sdb_store_matcher_t *, sdb_store_obj_t *,
303 sdb_store_matcher_t *);
305 /* this array needs to be indexable by the matcher types;
306 * -> update the enum in store-private.h when updating this */
307 static matcher_cb
308 matchers[] = {
309 match_logical,
310 match_logical,
311 match_unary,
312 match_iter,
313 match_iter,
314 match_cmp,
315 match_cmp,
316 match_cmp,
317 match_cmp,
318 match_cmp,
319 match_cmp,
320 match_in,
321 match_regex,
322 match_regex,
323 match_isnull,
324 match_isnull,
325 };
327 /*
328 * private matcher types
329 */
331 static int
332 op_matcher_init(sdb_object_t *obj, va_list ap)
333 {
334 M(obj)->type = va_arg(ap, int);
335 if ((M(obj)->type != MATCHER_OR) && (M(obj)->type != MATCHER_AND))
336 return -1;
338 OP_M(obj)->left = va_arg(ap, sdb_store_matcher_t *);
339 sdb_object_ref(SDB_OBJ(OP_M(obj)->left));
340 OP_M(obj)->right = va_arg(ap, sdb_store_matcher_t *);
341 sdb_object_ref(SDB_OBJ(OP_M(obj)->right));
343 if ((! OP_M(obj)->left) || (! OP_M(obj)->right))
344 return -1;
345 return 0;
346 } /* op_matcher_init */
348 static void
349 op_matcher_destroy(sdb_object_t *obj)
350 {
351 if (OP_M(obj)->left)
352 sdb_object_deref(SDB_OBJ(OP_M(obj)->left));
353 if (OP_M(obj)->right)
354 sdb_object_deref(SDB_OBJ(OP_M(obj)->right));
355 } /* op_matcher_destroy */
357 static int
358 iter_matcher_init(sdb_object_t *obj, va_list ap)
359 {
360 M(obj)->type = va_arg(ap, int);
361 ITER_M(obj)->type = va_arg(ap, int);
362 ITER_M(obj)->m = va_arg(ap, sdb_store_matcher_t *);
364 if (! ITER_M(obj)->m)
365 return -1;
367 sdb_object_ref(SDB_OBJ(ITER_M(obj)->m));
368 return 0;
369 } /* iter_matcher_init */
371 static void
372 iter_matcher_destroy(sdb_object_t *obj)
373 {
374 sdb_object_deref(SDB_OBJ(ITER_M(obj)->m));
375 } /* iter_matcher_destroy */
377 static int
378 cmp_matcher_init(sdb_object_t *obj, va_list ap)
379 {
380 M(obj)->type = va_arg(ap, int);
382 CMP_M(obj)->left = va_arg(ap, sdb_store_expr_t *);
383 sdb_object_ref(SDB_OBJ(CMP_M(obj)->left));
384 CMP_M(obj)->right = va_arg(ap, sdb_store_expr_t *);
385 sdb_object_ref(SDB_OBJ(CMP_M(obj)->right));
387 if ((! CMP_M(obj)->left) || (! CMP_M(obj)->right))
388 return -1;
389 return 0;
390 } /* cmp_matcher_init */
392 static void
393 cmp_matcher_destroy(sdb_object_t *obj)
394 {
395 sdb_object_deref(SDB_OBJ(CMP_M(obj)->left));
396 sdb_object_deref(SDB_OBJ(CMP_M(obj)->right));
397 } /* cmp_matcher_destroy */
399 static int
400 uop_matcher_init(sdb_object_t *obj, va_list ap)
401 {
402 M(obj)->type = va_arg(ap, int);
403 if (M(obj)->type != MATCHER_NOT)
404 return -1;
406 UOP_M(obj)->op = va_arg(ap, sdb_store_matcher_t *);
407 sdb_object_ref(SDB_OBJ(UOP_M(obj)->op));
409 if (! UOP_M(obj)->op)
410 return -1;
411 return 0;
412 } /* uop_matcher_init */
414 static void
415 uop_matcher_destroy(sdb_object_t *obj)
416 {
417 if (UOP_M(obj)->op)
418 sdb_object_deref(SDB_OBJ(UOP_M(obj)->op));
419 } /* uop_matcher_destroy */
421 static int
422 isnull_matcher_init(sdb_object_t *obj, va_list ap)
423 {
424 M(obj)->type = va_arg(ap, int);
425 if ((M(obj)->type != MATCHER_ISNULL) && (M(obj)->type != MATCHER_ISNNULL))
426 return -1;
428 ISNULL_M(obj)->expr = va_arg(ap, sdb_store_expr_t *);
429 sdb_object_ref(SDB_OBJ(ISNULL_M(obj)->expr));
430 return 0;
431 } /* isnull_matcher_init */
433 static void
434 isnull_matcher_destroy(sdb_object_t *obj)
435 {
436 sdb_object_deref(SDB_OBJ(ISNULL_M(obj)->expr));
437 ISNULL_M(obj)->expr = NULL;
438 } /* isnull_matcher_destroy */
440 static sdb_type_t op_type = {
441 /* size = */ sizeof(op_matcher_t),
442 /* init = */ op_matcher_init,
443 /* destroy = */ op_matcher_destroy,
444 };
446 static sdb_type_t uop_type = {
447 /* size = */ sizeof(uop_matcher_t),
448 /* init = */ uop_matcher_init,
449 /* destroy = */ uop_matcher_destroy,
450 };
452 static sdb_type_t iter_type = {
453 /* size = */ sizeof(iter_matcher_t),
454 /* init = */ iter_matcher_init,
455 /* destroy = */ iter_matcher_destroy,
456 };
458 static sdb_type_t cmp_type = {
459 /* size = */ sizeof(cmp_matcher_t),
460 /* init = */ cmp_matcher_init,
461 /* destroy = */ cmp_matcher_destroy,
462 };
464 static sdb_type_t isnull_type = {
465 /* size = */ sizeof(isnull_matcher_t),
466 /* init = */ isnull_matcher_init,
467 /* destroy = */ isnull_matcher_destroy,
468 };
470 /*
471 * public API
472 */
474 sdb_store_matcher_t *
475 sdb_store_any_matcher(int type, sdb_store_matcher_t *m)
476 {
477 if ((type != SDB_SERVICE) && (type != SDB_METRIC)
478 && (type != SDB_ATTRIBUTE))
479 return NULL;
480 return M(sdb_object_create("any-matcher", iter_type,
481 MATCHER_ANY, type, m));
482 } /* sdb_store_any_matcher */
484 sdb_store_matcher_t *
485 sdb_store_all_matcher(int type, sdb_store_matcher_t *m)
486 {
487 if ((type != SDB_SERVICE) && (type != SDB_METRIC)
488 && (type != SDB_ATTRIBUTE))
489 return NULL;
490 return M(sdb_object_create("all-matcher", iter_type,
491 MATCHER_ALL, type, m));
492 } /* sdb_store_all_matcher */
494 sdb_store_matcher_t *
495 sdb_store_lt_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right)
496 {
497 return M(sdb_object_create("lt-matcher", cmp_type,
498 MATCHER_LT, left, right));
499 } /* sdb_store_lt_matcher */
501 sdb_store_matcher_t *
502 sdb_store_le_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right)
503 {
504 return M(sdb_object_create("le-matcher", cmp_type,
505 MATCHER_LE, left, right));
506 } /* sdb_store_le_matcher */
508 sdb_store_matcher_t *
509 sdb_store_eq_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right)
510 {
511 return M(sdb_object_create("eq-matcher", cmp_type,
512 MATCHER_EQ, left, right));
513 } /* sdb_store_eq_matcher */
515 sdb_store_matcher_t *
516 sdb_store_ne_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right)
517 {
518 return M(sdb_object_create("ne-matcher", cmp_type,
519 MATCHER_NE, left, right));
520 } /* sdb_store_ne_matcher */
522 sdb_store_matcher_t *
523 sdb_store_ge_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right)
524 {
525 return M(sdb_object_create("ge-matcher", cmp_type,
526 MATCHER_GE, left, right));
527 } /* sdb_store_ge_matcher */
529 sdb_store_matcher_t *
530 sdb_store_gt_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right)
531 {
532 return M(sdb_object_create("gt-matcher", cmp_type,
533 MATCHER_GT, left, right));
534 } /* sdb_store_gt_matcher */
536 sdb_store_matcher_t *
537 sdb_store_in_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right)
538 {
539 return M(sdb_object_create("in-matcher", cmp_type,
540 MATCHER_IN, left, right));
541 } /* sdb_store_in_matcher */
543 sdb_store_matcher_t *
544 sdb_store_regex_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right)
545 {
546 if (! right->type) {
547 if ((right->data.type != SDB_TYPE_STRING)
548 && (right->data.type != SDB_TYPE_REGEX))
549 return NULL;
551 if (right->data.type == SDB_TYPE_STRING) {
552 char *raw = right->data.data.string;
553 if (sdb_data_parse(raw, SDB_TYPE_REGEX, &right->data))
554 return NULL;
555 free(raw);
556 }
557 }
558 return M(sdb_object_create("regex-matcher", cmp_type,
559 MATCHER_REGEX, left, right));
560 } /* sdb_store_regex_matcher */
562 sdb_store_matcher_t *
563 sdb_store_nregex_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right)
564 {
565 sdb_store_matcher_t *m = sdb_store_regex_matcher(left, right);
566 if (! m)
567 return NULL;
568 m->type = MATCHER_NREGEX;
569 return m;
570 } /* sdb_store_nregex_matcher */
572 sdb_store_matcher_t *
573 sdb_store_isnull_matcher(sdb_store_expr_t *expr)
574 {
575 return M(sdb_object_create("isnull-matcher", isnull_type,
576 MATCHER_ISNULL, expr));
577 } /* sdb_store_isnull_matcher */
579 sdb_store_matcher_t *
580 sdb_store_isnnull_matcher(sdb_store_expr_t *expr)
581 {
582 return M(sdb_object_create("isnull-matcher", isnull_type,
583 MATCHER_ISNNULL, expr));
584 } /* sdb_store_isnnull_matcher */
586 sdb_store_matcher_op_cb
587 sdb_store_parse_matcher_op(const char *op)
588 {
589 if (! strcasecmp(op, "<"))
590 return sdb_store_lt_matcher;
591 else if (! strcasecmp(op, "<="))
592 return sdb_store_le_matcher;
593 else if (! strcasecmp(op, "="))
594 return sdb_store_eq_matcher;
595 else if (! strcasecmp(op, "!="))
596 return sdb_store_ne_matcher;
597 else if (! strcasecmp(op, ">="))
598 return sdb_store_ge_matcher;
599 else if (! strcasecmp(op, ">"))
600 return sdb_store_gt_matcher;
601 else if (! strcasecmp(op, "=~"))
602 return sdb_store_regex_matcher;
603 else if (! strcasecmp(op, "!~"))
604 return sdb_store_nregex_matcher;
605 return NULL;
606 } /* sdb_store_parse_matcher_op */
608 int
609 sdb_store_parse_object_type(const char *name)
610 {
611 if (! strcasecmp(name, "host"))
612 return SDB_HOST;
613 else if (! strcasecmp(name, "service"))
614 return SDB_SERVICE;
615 else if (! strcasecmp(name, "metric"))
616 return SDB_METRIC;
617 else if (! strcasecmp(name, "attribute"))
618 return SDB_ATTRIBUTE;
619 return -1;
620 } /* sdb_store_parse_object_type */
622 int
623 sdb_store_parse_object_type_plural(const char *name)
624 {
625 if (! strcasecmp(name, "hosts"))
626 return SDB_HOST;
627 else if (! strcasecmp(name, "services"))
628 return SDB_SERVICE;
629 else if (! strcasecmp(name, "metrics"))
630 return SDB_METRIC;
631 else if (! strcasecmp(name, "attributes"))
632 return SDB_ATTRIBUTE;
633 return -1;
634 } /* sdb_store_parse_object_type_plural */
636 int
637 sdb_store_parse_field_name(const char *name)
638 {
639 if (! strcasecmp(name, "name"))
640 return SDB_FIELD_NAME;
641 else if (! strcasecmp(name, "last_update"))
642 return SDB_FIELD_LAST_UPDATE;
643 else if (! strcasecmp(name, "age"))
644 return SDB_FIELD_AGE;
645 else if (! strcasecmp(name, "interval"))
646 return SDB_FIELD_INTERVAL;
647 else if (! strcasecmp(name, "backend"))
648 return SDB_FIELD_BACKEND;
649 return -1;
650 } /* sdb_store_parse_field_name */
652 sdb_store_matcher_t *
653 sdb_store_dis_matcher(sdb_store_matcher_t *left, sdb_store_matcher_t *right)
654 {
655 return M(sdb_object_create("dis-matcher", op_type, MATCHER_OR,
656 left, right));
657 } /* sdb_store_dis_matcher */
659 sdb_store_matcher_t *
660 sdb_store_con_matcher(sdb_store_matcher_t *left, sdb_store_matcher_t *right)
661 {
662 return M(sdb_object_create("con-matcher", op_type, MATCHER_AND,
663 left, right));
664 } /* sdb_store_con_matcher */
666 sdb_store_matcher_t *
667 sdb_store_inv_matcher(sdb_store_matcher_t *m)
668 {
669 return M(sdb_object_create("inv-matcher", uop_type, MATCHER_NOT, m));
670 } /* sdb_store_inv_matcher */
672 int
673 sdb_store_matcher_matches(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
674 sdb_store_matcher_t *filter)
675 {
676 if (filter && (! sdb_store_matcher_matches(filter, obj, NULL)))
677 return 0;
679 /* "NULL" always matches */
680 if ((! m) || (! obj))
681 return 1;
683 if ((m->type < 0) || ((size_t)m->type >= SDB_STATIC_ARRAY_LEN(matchers)))
684 return 0;
686 return matchers[m->type](m, obj, filter);
687 } /* sdb_store_matcher_matches */
689 /* vim: set tw=78 sw=4 ts=4 noexpandtab : */