f72e26dd4e6f4e153ebc2728c4f0b5d067e4fd4d
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"
41 #include "utils/error.h"
43 #include <assert.h>
45 #include <sys/types.h>
46 #include <regex.h>
48 #include <stdlib.h>
49 #include <string.h>
51 #include <limits.h>
53 static int
54 expr_eval2(sdb_store_expr_t *e1, sdb_data_t *v1,
55 sdb_store_expr_t *e2, sdb_data_t *v2,
56 sdb_store_obj_t *obj, sdb_store_matcher_t *filter)
57 {
58 if (e1->type) {
59 if (sdb_store_expr_eval(e1, obj, v1, filter))
60 return -1;
61 }
62 else
63 *v1 = e1->data;
64 if (e2->type) {
65 if (sdb_store_expr_eval(e2, obj, v2, filter)) {
66 if (e1->type)
67 sdb_data_free_datum(v1);
68 return -1;
69 }
70 }
71 else
72 *v2 = e2->data;
73 return 0;
74 } /* expr_eval2 */
76 static void
77 expr_free_datum2(sdb_store_expr_t *e1, sdb_data_t *v1,
78 sdb_store_expr_t *e2, sdb_data_t *v2)
79 {
80 if (e1->type)
81 sdb_data_free_datum(v1);
82 if (e2->type)
83 sdb_data_free_datum(v2);
84 } /* expr_free_datum2 */
86 /*
87 * matcher implementations
88 */
90 /*
91 * cmp_expr:
92 * Compare two values using the specified matcher operator. If strcmp_fallback
93 * is enabled, compare the string values in case of a type mismatch.
94 */
95 static int
96 match_cmp_value(int op, sdb_data_t *v1, sdb_data_t *v2, bool strcmp_fallback)
97 {
98 int status;
100 if (sdb_data_isnull(v1) || (sdb_data_isnull(v2)))
101 status = INT_MAX;
102 else if (v1->type == v2->type)
103 status = sdb_data_cmp(v1, v2);
104 else if (! strcmp_fallback)
105 status = INT_MAX;
106 else
107 status = sdb_data_strcmp(v1, v2);
109 if (status == INT_MAX)
110 return 0;
111 switch (op) {
112 case MATCHER_LT: return status < 0;
113 case MATCHER_LE: return status <= 0;
114 case MATCHER_EQ: return status == 0;
115 case MATCHER_NE: return status != 0;
116 case MATCHER_GE: return status >= 0;
117 case MATCHER_GT: return status > 0;
118 }
119 return 0;
120 } /* match_cmp_value */
122 static int
123 match_regex_value(int op, sdb_data_t *v, sdb_data_t *re)
124 {
125 char value[sdb_data_strlen(v) + 1];
126 int status = 0;
128 assert((op == MATCHER_REGEX)
129 || (op == MATCHER_NREGEX));
131 if (sdb_data_isnull(v) || sdb_data_isnull(re))
132 return 0;
134 if (re->type == SDB_TYPE_STRING) {
135 sdb_data_t tmp = SDB_DATA_INIT;
137 if (sdb_data_parse(re->data.string, SDB_TYPE_REGEX, &tmp))
138 return 0;
140 sdb_data_free_datum(re);
141 *re = tmp;
142 }
143 else if (re->type != SDB_TYPE_REGEX)
144 return 0;
146 if (! sdb_data_format(v, value, sizeof(value), SDB_UNQUOTED))
147 status = 0;
148 else if (! regexec(&re->data.re.regex, value, 0, NULL, 0))
149 status = 1;
151 if (op == MATCHER_NREGEX)
152 return !status;
153 return status;
154 } /* match_regex_value */
156 static int
157 match_logical(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
158 sdb_store_matcher_t *filter)
159 {
160 int status;
162 assert((m->type == MATCHER_AND) || (m->type == MATCHER_OR));
163 assert(OP_M(m)->left && OP_M(m)->right);
165 status = sdb_store_matcher_matches(OP_M(m)->left, obj, filter);
167 /* lazy evaluation */
168 if ((! status) && (m->type == MATCHER_AND))
169 return status;
170 else if (status && (m->type == MATCHER_OR))
171 return status;
173 return sdb_store_matcher_matches(OP_M(m)->right, obj, filter);
174 } /* match_logical */
176 static int
177 match_unary(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
178 sdb_store_matcher_t *filter)
179 {
180 assert(m->type == MATCHER_NOT);
181 assert(UOP_M(m)->op);
183 return !sdb_store_matcher_matches(UOP_M(m)->op, obj, filter);
184 } /* match_unary */
186 /* iterate: ANY/ALL <iter> <cmp> <value> */
187 static int
188 match_iter(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
189 sdb_store_matcher_t *filter)
190 {
191 sdb_store_expr_iter_t *iter = NULL;
192 int status;
193 int all = (int)(m->type == MATCHER_ALL);
195 assert((m->type == MATCHER_ANY) || (m->type == MATCHER_ALL));
196 assert((! CMP_M(ITER_M(m)->m)->left) && CMP_M(ITER_M(m)->m)->right);
198 iter = sdb_store_expr_iter(ITER_M(m)->iter, obj, filter);
199 if (! iter)
200 return 0;
202 status = all;
203 while (sdb_store_expr_iter_has_next(iter)) {
204 sdb_data_t v = sdb_store_expr_iter_get_next(iter);
205 sdb_store_expr_t expr = CONST_EXPR(v);
206 bool matches;
208 CMP_M(ITER_M(m)->m)->left = &expr;
209 matches = sdb_store_matcher_matches(ITER_M(m)->m, obj, filter);
210 CMP_M(ITER_M(m)->m)->left = NULL;
211 sdb_data_free_datum(&v);
213 if (matches) {
214 if (! all) {
215 status = 1;
216 break;
217 }
218 } else if (all) {
219 status = 0;
220 break;
221 }
222 }
223 sdb_store_expr_iter_destroy(iter);
224 return status;
225 } /* match_iter */
227 static int
228 match_cmp(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
229 sdb_store_matcher_t *filter)
230 {
231 sdb_store_expr_t *e1 = CMP_M(m)->left;
232 sdb_store_expr_t *e2 = CMP_M(m)->right;
233 sdb_data_t v1 = SDB_DATA_INIT, v2 = SDB_DATA_INIT;
234 int status;
236 assert((m->type == MATCHER_LT)
237 || (m->type == MATCHER_LE)
238 || (m->type == MATCHER_EQ)
239 || (m->type == MATCHER_NE)
240 || (m->type == MATCHER_GE)
241 || (m->type == MATCHER_GT));
242 assert(e1 && e2);
244 if (expr_eval2(e1, &v1, e2, &v2, obj, filter))
245 return 0;
247 status = match_cmp_value(m->type, &v1, &v2,
248 (e1->data_type) < 0 || (e2->data_type < 0));
250 expr_free_datum2(e1, &v1, e2, &v2);
251 return status;
252 } /* match_cmp */
254 static int
255 match_in(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
256 sdb_store_matcher_t *filter)
257 {
258 sdb_data_t value = SDB_DATA_INIT, array = SDB_DATA_INIT;
259 int status = 1;
261 assert((m->type == MATCHER_IN) || (m->type == MATCHER_NIN));
262 assert(CMP_M(m)->left && CMP_M(m)->right);
264 if (expr_eval2(CMP_M(m)->left, &value,
265 CMP_M(m)->right, &array, obj, filter))
266 status = 0;
268 if (status)
269 status = sdb_data_inarray(&value, &array);
271 expr_free_datum2(CMP_M(m)->left, &value, CMP_M(m)->right, &array);
272 if (m->type == MATCHER_NIN)
273 return !status;
274 return status;
275 } /* match_in */
277 static int
278 match_regex(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
279 sdb_store_matcher_t *filter)
280 {
281 sdb_data_t regex = SDB_DATA_INIT, v = SDB_DATA_INIT;
282 int status = 0;
284 assert((m->type == MATCHER_REGEX)
285 || (m->type == MATCHER_NREGEX));
286 assert(CMP_M(m)->left && CMP_M(m)->right);
288 if (expr_eval2(CMP_M(m)->left, &v, CMP_M(m)->right, ®ex, obj, filter))
289 return 0;
291 status = match_regex_value(m->type, &v, ®ex);
293 expr_free_datum2(CMP_M(m)->left, &v, CMP_M(m)->right, ®ex);
294 return status;
295 } /* match_regex */
297 static int
298 match_isnull(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
299 sdb_store_matcher_t *filter)
300 {
301 sdb_data_t v = SDB_DATA_INIT;
302 int status;
304 assert(m->type == MATCHER_ISNULL);
306 if (ISNULL_M(m)->expr->type) {
307 /* TODO: this might hide real errors;
308 * improve error reporting and propagation */
309 if (sdb_store_expr_eval(ISNULL_M(m)->expr, obj, &v, filter))
310 return 1;
311 }
312 else
313 v = ISNULL_M(m)->expr->data;
315 if (sdb_data_isnull(&v))
316 status = 1;
317 else
318 status = 0;
320 if (ISNULL_M(m)->expr->type)
321 sdb_data_free_datum(&v);
322 return status;
323 } /* match_isnull */
325 typedef int (*matcher_cb)(sdb_store_matcher_t *, sdb_store_obj_t *,
326 sdb_store_matcher_t *);
328 /* this array needs to be indexable by the matcher types;
329 * -> update the enum in store-private.h when updating this */
330 static matcher_cb
331 matchers[] = {
332 match_logical,
333 match_logical,
334 match_unary,
335 match_iter,
336 match_iter,
337 match_in,
338 match_in,
340 /* unary operators */
341 match_isnull,
343 /* ary operators */
344 match_cmp,
345 match_cmp,
346 match_cmp,
347 match_cmp,
348 match_cmp,
349 match_cmp,
350 match_regex,
351 match_regex,
353 NULL, /* QUERY */
354 };
356 /*
357 * private matcher types
358 */
360 static int
361 op_matcher_init(sdb_object_t *obj, va_list ap)
362 {
363 M(obj)->type = va_arg(ap, int);
364 if ((M(obj)->type != MATCHER_OR) && (M(obj)->type != MATCHER_AND))
365 return -1;
367 OP_M(obj)->left = va_arg(ap, sdb_store_matcher_t *);
368 sdb_object_ref(SDB_OBJ(OP_M(obj)->left));
369 OP_M(obj)->right = va_arg(ap, sdb_store_matcher_t *);
370 sdb_object_ref(SDB_OBJ(OP_M(obj)->right));
372 if ((! OP_M(obj)->left) || (! OP_M(obj)->right))
373 return -1;
374 return 0;
375 } /* op_matcher_init */
377 static void
378 op_matcher_destroy(sdb_object_t *obj)
379 {
380 if (OP_M(obj)->left)
381 sdb_object_deref(SDB_OBJ(OP_M(obj)->left));
382 if (OP_M(obj)->right)
383 sdb_object_deref(SDB_OBJ(OP_M(obj)->right));
384 } /* op_matcher_destroy */
386 static int
387 iter_matcher_init(sdb_object_t *obj, va_list ap)
388 {
389 M(obj)->type = va_arg(ap, int);
390 ITER_M(obj)->iter = va_arg(ap, sdb_store_expr_t *);
391 ITER_M(obj)->m = va_arg(ap, sdb_store_matcher_t *);
393 sdb_object_ref(SDB_OBJ(ITER_M(obj)->iter));
394 sdb_object_ref(SDB_OBJ(ITER_M(obj)->m));
396 if ((! ITER_M(obj)->iter) || (! ITER_M(obj)->m))
397 return -1;
398 return 0;
399 } /* iter_matcher_init */
401 static void
402 iter_matcher_destroy(sdb_object_t *obj)
403 {
404 sdb_object_deref(SDB_OBJ(ITER_M(obj)->iter));
405 sdb_object_deref(SDB_OBJ(ITER_M(obj)->m));
406 } /* iter_matcher_destroy */
408 static int
409 cmp_matcher_init(sdb_object_t *obj, va_list ap)
410 {
411 M(obj)->type = va_arg(ap, int);
413 CMP_M(obj)->left = va_arg(ap, sdb_store_expr_t *);
414 sdb_object_ref(SDB_OBJ(CMP_M(obj)->left));
415 CMP_M(obj)->right = va_arg(ap, sdb_store_expr_t *);
416 sdb_object_ref(SDB_OBJ(CMP_M(obj)->right));
418 if (! CMP_M(obj)->right)
419 return -1;
420 return 0;
421 } /* cmp_matcher_init */
423 static void
424 cmp_matcher_destroy(sdb_object_t *obj)
425 {
426 sdb_object_deref(SDB_OBJ(CMP_M(obj)->left));
427 sdb_object_deref(SDB_OBJ(CMP_M(obj)->right));
428 } /* cmp_matcher_destroy */
430 static int
431 uop_matcher_init(sdb_object_t *obj, va_list ap)
432 {
433 M(obj)->type = va_arg(ap, int);
434 if (M(obj)->type != MATCHER_NOT)
435 return -1;
437 UOP_M(obj)->op = va_arg(ap, sdb_store_matcher_t *);
438 sdb_object_ref(SDB_OBJ(UOP_M(obj)->op));
440 if (! UOP_M(obj)->op)
441 return -1;
442 return 0;
443 } /* uop_matcher_init */
445 static void
446 uop_matcher_destroy(sdb_object_t *obj)
447 {
448 if (UOP_M(obj)->op)
449 sdb_object_deref(SDB_OBJ(UOP_M(obj)->op));
450 } /* uop_matcher_destroy */
452 static int
453 isnull_matcher_init(sdb_object_t *obj, va_list ap)
454 {
455 M(obj)->type = va_arg(ap, int);
456 if (M(obj)->type != MATCHER_ISNULL)
457 return -1;
459 ISNULL_M(obj)->expr = va_arg(ap, sdb_store_expr_t *);
460 sdb_object_ref(SDB_OBJ(ISNULL_M(obj)->expr));
461 return 0;
462 } /* isnull_matcher_init */
464 static void
465 isnull_matcher_destroy(sdb_object_t *obj)
466 {
467 sdb_object_deref(SDB_OBJ(ISNULL_M(obj)->expr));
468 ISNULL_M(obj)->expr = NULL;
469 } /* isnull_matcher_destroy */
471 static sdb_type_t op_type = {
472 /* size = */ sizeof(op_matcher_t),
473 /* init = */ op_matcher_init,
474 /* destroy = */ op_matcher_destroy,
475 };
477 static sdb_type_t uop_type = {
478 /* size = */ sizeof(uop_matcher_t),
479 /* init = */ uop_matcher_init,
480 /* destroy = */ uop_matcher_destroy,
481 };
483 static sdb_type_t iter_type = {
484 /* size = */ sizeof(iter_matcher_t),
485 /* init = */ iter_matcher_init,
486 /* destroy = */ iter_matcher_destroy,
487 };
489 static sdb_type_t cmp_type = {
490 /* size = */ sizeof(cmp_matcher_t),
491 /* init = */ cmp_matcher_init,
492 /* destroy = */ cmp_matcher_destroy,
493 };
495 static sdb_type_t isnull_type = {
496 /* size = */ sizeof(isnull_matcher_t),
497 /* init = */ isnull_matcher_init,
498 /* destroy = */ isnull_matcher_destroy,
499 };
501 /*
502 * public API
503 */
505 sdb_store_matcher_t *
506 sdb_store_any_matcher(sdb_store_expr_t *iter, sdb_store_matcher_t *m)
507 {
508 if ((m->type < MATCHER_LT) || (MATCHER_NREGEX < m->type)) {
509 sdb_log(SDB_LOG_ERR, "store: Invalid ANY -> %s matcher "
510 "(invalid operator)", MATCHER_SYM(m->type));
511 return NULL;
512 }
513 if (CMP_M(m)->left) {
514 sdb_log(SDB_LOG_ERR, "store: Invalid ANY %s %s %s matcher "
515 "(invalid left operand)",
516 SDB_TYPE_TO_STRING(CMP_M(m)->left->data_type),
517 MATCHER_SYM(m->type),
518 SDB_TYPE_TO_STRING(CMP_M(m)->right->data_type));
519 return NULL;
520 }
521 return M(sdb_object_create("any-matcher", iter_type,
522 MATCHER_ANY, iter, m));
523 } /* sdb_store_any_matcher */
525 sdb_store_matcher_t *
526 sdb_store_all_matcher(sdb_store_expr_t *iter, sdb_store_matcher_t *m)
527 {
528 if ((m->type < MATCHER_LT) || (MATCHER_NREGEX < m->type)) {
529 sdb_log(SDB_LOG_ERR, "store: Invalid ALL -> %s matcher "
530 "(invalid operator)", MATCHER_SYM(m->type));
531 return NULL;
532 }
533 if (CMP_M(m)->left) {
534 sdb_log(SDB_LOG_ERR, "store: Invalid ALL %s %s %s matcher "
535 "(invalid left operand)",
536 SDB_TYPE_TO_STRING(CMP_M(m)->left->data_type),
537 MATCHER_SYM(m->type),
538 SDB_TYPE_TO_STRING(CMP_M(m)->right->data_type));
539 return NULL;
540 }
541 return M(sdb_object_create("all-matcher", iter_type,
542 MATCHER_ALL, iter, m));
543 } /* sdb_store_all_matcher */
545 sdb_store_matcher_t *
546 sdb_store_lt_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right)
547 {
548 return M(sdb_object_create("lt-matcher", cmp_type,
549 MATCHER_LT, left, right));
550 } /* sdb_store_lt_matcher */
552 sdb_store_matcher_t *
553 sdb_store_le_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right)
554 {
555 return M(sdb_object_create("le-matcher", cmp_type,
556 MATCHER_LE, left, right));
557 } /* sdb_store_le_matcher */
559 sdb_store_matcher_t *
560 sdb_store_eq_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right)
561 {
562 return M(sdb_object_create("eq-matcher", cmp_type,
563 MATCHER_EQ, left, right));
564 } /* sdb_store_eq_matcher */
566 sdb_store_matcher_t *
567 sdb_store_ne_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right)
568 {
569 return M(sdb_object_create("ne-matcher", cmp_type,
570 MATCHER_NE, left, right));
571 } /* sdb_store_ne_matcher */
573 sdb_store_matcher_t *
574 sdb_store_ge_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right)
575 {
576 return M(sdb_object_create("ge-matcher", cmp_type,
577 MATCHER_GE, left, right));
578 } /* sdb_store_ge_matcher */
580 sdb_store_matcher_t *
581 sdb_store_gt_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right)
582 {
583 return M(sdb_object_create("gt-matcher", cmp_type,
584 MATCHER_GT, left, right));
585 } /* sdb_store_gt_matcher */
587 sdb_store_matcher_t *
588 sdb_store_in_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right)
589 {
590 return M(sdb_object_create("in-matcher", cmp_type,
591 MATCHER_IN, left, right));
592 } /* sdb_store_in_matcher */
594 sdb_store_matcher_t *
595 sdb_store_nin_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right)
596 {
597 return M(sdb_object_create("not-in-matcher", cmp_type,
598 MATCHER_NIN, left, right));
599 } /* sdb_store_in_matcher */
601 sdb_store_matcher_t *
602 sdb_store_regex_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right)
603 {
604 if (! right->type) {
605 if ((right->data.type != SDB_TYPE_STRING)
606 && (right->data.type != SDB_TYPE_REGEX))
607 return NULL;
609 if (right->data.type == SDB_TYPE_STRING) {
610 char *raw = right->data.data.string;
611 if (sdb_data_parse(raw, SDB_TYPE_REGEX, &right->data))
612 return NULL;
613 free(raw);
614 }
615 }
616 return M(sdb_object_create("regex-matcher", cmp_type,
617 MATCHER_REGEX, left, right));
618 } /* sdb_store_regex_matcher */
620 sdb_store_matcher_t *
621 sdb_store_nregex_matcher(sdb_store_expr_t *left, sdb_store_expr_t *right)
622 {
623 sdb_store_matcher_t *m = sdb_store_regex_matcher(left, right);
624 if (! m)
625 return NULL;
626 m->type = MATCHER_NREGEX;
627 return m;
628 } /* sdb_store_nregex_matcher */
630 sdb_store_matcher_t *
631 sdb_store_isnull_matcher(sdb_store_expr_t *expr)
632 {
633 return M(sdb_object_create("isnull-matcher", isnull_type,
634 MATCHER_ISNULL, expr));
635 } /* sdb_store_isnull_matcher */
637 sdb_store_matcher_op_cb
638 sdb_store_parse_matcher_op(const char *op)
639 {
640 if (! strcasecmp(op, "<"))
641 return sdb_store_lt_matcher;
642 else if (! strcasecmp(op, "<="))
643 return sdb_store_le_matcher;
644 else if (! strcasecmp(op, "="))
645 return sdb_store_eq_matcher;
646 else if (! strcasecmp(op, "!="))
647 return sdb_store_ne_matcher;
648 else if (! strcasecmp(op, ">="))
649 return sdb_store_ge_matcher;
650 else if (! strcasecmp(op, ">"))
651 return sdb_store_gt_matcher;
652 else if (! strcasecmp(op, "=~"))
653 return sdb_store_regex_matcher;
654 else if (! strcasecmp(op, "!~"))
655 return sdb_store_nregex_matcher;
656 return NULL;
657 } /* sdb_store_parse_matcher_op */
659 int
660 sdb_store_parse_object_type(const char *name)
661 {
662 if (! strcasecmp(name, "host"))
663 return SDB_HOST;
664 else if (! strcasecmp(name, "service"))
665 return SDB_SERVICE;
666 else if (! strcasecmp(name, "metric"))
667 return SDB_METRIC;
668 else if (! strcasecmp(name, "attribute"))
669 return SDB_ATTRIBUTE;
670 return -1;
671 } /* sdb_store_parse_object_type */
673 int
674 sdb_store_parse_object_type_plural(const char *name)
675 {
676 if (! strcasecmp(name, "hosts"))
677 return SDB_HOST;
678 else if (! strcasecmp(name, "services"))
679 return SDB_SERVICE;
680 else if (! strcasecmp(name, "metrics"))
681 return SDB_METRIC;
682 else if (! strcasecmp(name, "attributes"))
683 return SDB_ATTRIBUTE;
684 return -1;
685 } /* sdb_store_parse_object_type_plural */
687 int
688 sdb_store_parse_field_name(const char *name)
689 {
690 if (! strcasecmp(name, "name"))
691 return SDB_FIELD_NAME;
692 else if (! strcasecmp(name, "last_update"))
693 return SDB_FIELD_LAST_UPDATE;
694 else if (! strcasecmp(name, "age"))
695 return SDB_FIELD_AGE;
696 else if (! strcasecmp(name, "interval"))
697 return SDB_FIELD_INTERVAL;
698 else if (! strcasecmp(name, "backend"))
699 return SDB_FIELD_BACKEND;
700 else if (! strcasecmp(name, "value"))
701 return SDB_FIELD_VALUE;
702 return -1;
703 } /* sdb_store_parse_field_name */
705 sdb_store_matcher_t *
706 sdb_store_dis_matcher(sdb_store_matcher_t *left, sdb_store_matcher_t *right)
707 {
708 return M(sdb_object_create("dis-matcher", op_type, MATCHER_OR,
709 left, right));
710 } /* sdb_store_dis_matcher */
712 sdb_store_matcher_t *
713 sdb_store_con_matcher(sdb_store_matcher_t *left, sdb_store_matcher_t *right)
714 {
715 return M(sdb_object_create("con-matcher", op_type, MATCHER_AND,
716 left, right));
717 } /* sdb_store_con_matcher */
719 sdb_store_matcher_t *
720 sdb_store_inv_matcher(sdb_store_matcher_t *m)
721 {
722 return M(sdb_object_create("inv-matcher", uop_type, MATCHER_NOT, m));
723 } /* sdb_store_inv_matcher */
725 int
726 sdb_store_matcher_matches(sdb_store_matcher_t *m, sdb_store_obj_t *obj,
727 sdb_store_matcher_t *filter)
728 {
729 if (filter && (! sdb_store_matcher_matches(filter, obj, NULL)))
730 return 0;
732 /* "NULL" always matches */
733 if ((! m) || (! obj))
734 return 1;
736 if ((m->type < 0) || ((size_t)m->type >= SDB_STATIC_ARRAY_LEN(matchers)))
737 return 0;
739 if (! matchers[m->type])
740 return 0;
741 return matchers[m->type](m, obj, filter);
742 } /* sdb_store_matcher_matches */
744 /* vim: set tw=78 sw=4 ts=4 noexpandtab : */