4 Copyright (C) Andrew Tridgell 2004
6 ** NOTE! The following LGPL license applies to the ldb
7 ** library. This does NOT imply that all of Samba is released
10 This library is free software; you can redistribute it and/or
11 modify it under the terms of the GNU Lesser General Public
12 License as published by the Free Software Foundation; either
13 version 3 of the License, or (at your option) any later version.
15 This library is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 Lesser General Public License for more details.
20 You should have received a copy of the GNU Lesser General Public
21 License along with this library; if not, see <http://www.gnu.org/licenses/>.
27 * Component: ldb message component utility functions
29 * Description: functions for manipulating ldb_message structures
31 * Author: Andrew Tridgell
34 #include "ldb_private.h"
37 create a new ldb_message in a given memory context (NULL for top level)
39 struct ldb_message *ldb_msg_new(void *mem_ctx)
41 return talloc_zero(mem_ctx, struct ldb_message);
45 find an element in a message by attribute name
47 struct ldb_message_element *ldb_msg_find_element(const struct ldb_message *msg,
48 const char *attr_name)
51 for (i=0;i<msg->num_elements;i++) {
52 if (ldb_attr_cmp(msg->elements[i].name, attr_name) == 0) {
53 return &msg->elements[i];
60 see if two ldb_val structures contain exactly the same data
61 return 1 for a match, 0 for a mis-match
63 int ldb_val_equal_exact(const struct ldb_val *v1, const struct ldb_val *v2)
65 if (v1->length != v2->length) return 0;
66 if (v1->data == v2->data) return 1;
67 if (v1->length == 0) return 1;
69 if (memcmp(v1->data, v2->data, v1->length) == 0) {
77 find a value in an element
78 assumes case sensitive comparison
80 struct ldb_val *ldb_msg_find_val(const struct ldb_message_element *el,
84 for (i=0;i<el->num_values;i++) {
85 if (ldb_val_equal_exact(val, &el->values[i])) {
86 return &el->values[i];
93 duplicate a ldb_val structure
95 struct ldb_val ldb_val_dup(void *mem_ctx, const struct ldb_val *v)
98 v2.length = v->length;
99 if (v->data == NULL) {
104 /* the +1 is to cope with buggy C library routines like strndup
105 that look one byte beyond */
106 v2.data = talloc_array(mem_ctx, uint8_t, v->length+1);
112 memcpy(v2.data, v->data, v->length);
113 ((char *)v2.data)[v->length] = 0;
118 * Adds new empty element to msg->elements
120 static int _ldb_msg_add_el(struct ldb_message *msg,
121 struct ldb_message_element **return_el)
123 struct ldb_message_element *els;
125 /* TODO: Find out a way to assert
126 * on input parameters.
127 * msg and return_el must be valid */
129 els = talloc_realloc(msg, msg->elements,
130 struct ldb_message_element, msg->num_elements + 1);
133 return LDB_ERR_OPERATIONS_ERROR;
136 ZERO_STRUCT(els[msg->num_elements]);
141 *return_el = &els[msg->num_elements-1];
147 * Add an empty element with a given name to a message
149 int ldb_msg_add_empty(struct ldb_message *msg,
150 const char *attr_name,
152 struct ldb_message_element **return_el)
155 struct ldb_message_element *el;
157 ret = _ldb_msg_add_el(msg, &el);
158 if (ret != LDB_SUCCESS) {
162 /* initialize newly added element */
164 el->name = talloc_strdup(msg->elements, attr_name);
167 return LDB_ERR_OPERATIONS_ERROR;
178 * Adds an element to a message.
180 * NOTE: Ownership of ldb_message_element fields
181 * is NOT transferred. Thus, if el pointer
182 * is invalidated for some reason, this will
183 * corrupt msg contents also
185 int ldb_msg_add(struct ldb_message *msg,
186 const struct ldb_message_element *el,
190 struct ldb_message_element *el_new;
191 /* We have to copy this, just in case *el is a pointer into
192 * what ldb_msg_add_empty() is about to realloc() */
193 struct ldb_message_element el_copy = *el;
195 ret = _ldb_msg_add_el(msg, &el_new);
196 if (ret != LDB_SUCCESS) {
200 el_new->flags = flags;
201 el_new->name = el_copy.name;
202 el_new->num_values = el_copy.num_values;
203 el_new->values = el_copy.values;
209 add a value to a message
211 int ldb_msg_add_value(struct ldb_message *msg,
212 const char *attr_name,
213 const struct ldb_val *val,
214 struct ldb_message_element **return_el)
216 struct ldb_message_element *el;
217 struct ldb_val *vals;
220 el = ldb_msg_find_element(msg, attr_name);
222 ret = ldb_msg_add_empty(msg, attr_name, 0, &el);
223 if (ret != LDB_SUCCESS) {
228 vals = talloc_realloc(msg, el->values, struct ldb_val, el->num_values+1);
231 return LDB_ERR_OPERATIONS_ERROR;
234 el->values[el->num_values] = *val;
246 add a value to a message, stealing it into the 'right' place
248 int ldb_msg_add_steal_value(struct ldb_message *msg,
249 const char *attr_name,
253 struct ldb_message_element *el;
255 ret = ldb_msg_add_value(msg, attr_name, val, &el);
256 if (ret == LDB_SUCCESS) {
257 talloc_steal(el->values, val->data);
264 add a string element to a message
266 int ldb_msg_add_string(struct ldb_message *msg,
267 const char *attr_name, const char *str)
271 val.data = discard_const_p(uint8_t, str);
272 val.length = strlen(str);
274 if (val.length == 0) {
275 /* allow empty strings as non-existent attributes */
279 return ldb_msg_add_value(msg, attr_name, &val, NULL);
283 add a string element to a message, stealing it into the 'right' place
285 int ldb_msg_add_steal_string(struct ldb_message *msg,
286 const char *attr_name, char *str)
290 val.data = (uint8_t *)str;
291 val.length = strlen(str);
293 if (val.length == 0) {
294 /* allow empty strings as non-existent attributes */
298 return ldb_msg_add_steal_value(msg, attr_name, &val);
302 add a DN element to a message
303 WARNING: this uses the linearized string from the dn, and does not
306 int ldb_msg_add_linearized_dn(struct ldb_message *msg, const char *attr_name,
309 return ldb_msg_add_steal_string(msg, attr_name,
310 ldb_dn_alloc_linearized(msg, dn));
314 add a printf formatted element to a message
316 int ldb_msg_add_fmt(struct ldb_message *msg,
317 const char *attr_name, const char *fmt, ...)
324 str = talloc_vasprintf(msg, fmt, ap);
327 if (str == NULL) return LDB_ERR_OPERATIONS_ERROR;
329 val.data = (uint8_t *)str;
330 val.length = strlen(str);
332 return ldb_msg_add_steal_value(msg, attr_name, &val);
336 compare two ldb_message_element structures
337 assumes case sensitive comparison
339 int ldb_msg_element_compare(struct ldb_message_element *el1,
340 struct ldb_message_element *el2)
344 if (el1->num_values != el2->num_values) {
345 return el1->num_values - el2->num_values;
348 for (i=0;i<el1->num_values;i++) {
349 if (!ldb_msg_find_val(el2, &el1->values[i])) {
358 compare two ldb_message_element structures
359 comparing by element name
361 int ldb_msg_element_compare_name(struct ldb_message_element *el1,
362 struct ldb_message_element *el2)
364 return ldb_attr_cmp(el1->name, el2->name);
368 convenience functions to return common types from a message
369 these return the first value if the attribute is multi-valued
371 const struct ldb_val *ldb_msg_find_ldb_val(const struct ldb_message *msg,
372 const char *attr_name)
374 struct ldb_message_element *el = ldb_msg_find_element(msg, attr_name);
375 if (!el || el->num_values == 0) {
378 return &el->values[0];
381 int ldb_msg_find_attr_as_int(const struct ldb_message *msg,
382 const char *attr_name,
385 const struct ldb_val *v = ldb_msg_find_ldb_val(msg, attr_name);
386 if (!v || !v->data) {
387 return default_value;
389 return strtol((const char *)v->data, NULL, 0);
392 unsigned int ldb_msg_find_attr_as_uint(const struct ldb_message *msg,
393 const char *attr_name,
394 unsigned int default_value)
397 const struct ldb_val *v = ldb_msg_find_ldb_val(msg, attr_name);
398 if (!v || !v->data) {
399 return default_value;
402 /* in LDAP there're only int32_t values */
404 ret = strtol((const char *)v->data, NULL, 0);
409 return strtoul((const char *)v->data, NULL, 0);
412 int64_t ldb_msg_find_attr_as_int64(const struct ldb_message *msg,
413 const char *attr_name,
414 int64_t default_value)
416 const struct ldb_val *v = ldb_msg_find_ldb_val(msg, attr_name);
417 if (!v || !v->data) {
418 return default_value;
420 return strtoll((const char *)v->data, NULL, 0);
423 uint64_t ldb_msg_find_attr_as_uint64(const struct ldb_message *msg,
424 const char *attr_name,
425 uint64_t default_value)
428 const struct ldb_val *v = ldb_msg_find_ldb_val(msg, attr_name);
429 if (!v || !v->data) {
430 return default_value;
433 /* in LDAP there're only int64_t values */
435 ret = strtoll((const char *)v->data, NULL, 0);
440 return strtoull((const char *)v->data, NULL, 0);
443 double ldb_msg_find_attr_as_double(const struct ldb_message *msg,
444 const char *attr_name,
445 double default_value)
447 const struct ldb_val *v = ldb_msg_find_ldb_val(msg, attr_name);
448 if (!v || !v->data) {
449 return default_value;
451 return strtod((const char *)v->data, NULL);
454 int ldb_msg_find_attr_as_bool(const struct ldb_message *msg,
455 const char *attr_name,
458 const struct ldb_val *v = ldb_msg_find_ldb_val(msg, attr_name);
459 if (!v || !v->data) {
460 return default_value;
462 if (v->length == 5 && strncasecmp((const char *)v->data, "FALSE", 5) == 0) {
465 if (v->length == 4 && strncasecmp((const char *)v->data, "TRUE", 4) == 0) {
468 return default_value;
471 const char *ldb_msg_find_attr_as_string(const struct ldb_message *msg,
472 const char *attr_name,
473 const char *default_value)
475 const struct ldb_val *v = ldb_msg_find_ldb_val(msg, attr_name);
476 if (!v || !v->data) {
477 return default_value;
479 return (const char *)v->data;
482 struct ldb_dn *ldb_msg_find_attr_as_dn(struct ldb_context *ldb,
484 const struct ldb_message *msg,
485 const char *attr_name)
487 struct ldb_dn *res_dn;
488 const struct ldb_val *v;
490 v = ldb_msg_find_ldb_val(msg, attr_name);
491 if (!v || !v->data) {
494 res_dn = ldb_dn_from_ldb_val(mem_ctx, ldb, v);
495 if ( ! ldb_dn_validate(res_dn)) {
503 sort the elements of a message by name
505 void ldb_msg_sort_elements(struct ldb_message *msg)
507 TYPESAFE_QSORT(msg->elements, msg->num_elements,
508 ldb_msg_element_compare_name);
512 shallow copy a message - copying only the elements array so that the caller
513 can safely add new elements without changing the message
515 struct ldb_message *ldb_msg_copy_shallow(TALLOC_CTX *mem_ctx,
516 const struct ldb_message *msg)
518 struct ldb_message *msg2;
521 msg2 = talloc(mem_ctx, struct ldb_message);
522 if (msg2 == NULL) return NULL;
526 msg2->elements = talloc_array(msg2, struct ldb_message_element,
528 if (msg2->elements == NULL) goto failed;
530 for (i=0;i<msg2->num_elements;i++) {
531 msg2->elements[i] = msg->elements[i];
543 copy a message, allocating new memory for all parts
545 struct ldb_message *ldb_msg_copy(TALLOC_CTX *mem_ctx,
546 const struct ldb_message *msg)
548 struct ldb_message *msg2;
551 msg2 = ldb_msg_copy_shallow(mem_ctx, msg);
552 if (msg2 == NULL) return NULL;
554 msg2->dn = ldb_dn_copy(msg2, msg2->dn);
555 if (msg2->dn == NULL) goto failed;
557 for (i=0;i<msg2->num_elements;i++) {
558 struct ldb_message_element *el = &msg2->elements[i];
559 struct ldb_val *values = el->values;
560 el->name = talloc_strdup(msg2->elements, el->name);
561 if (el->name == NULL) goto failed;
562 el->values = talloc_array(msg2->elements, struct ldb_val, el->num_values);
563 for (j=0;j<el->num_values;j++) {
564 el->values[j] = ldb_val_dup(el->values, &values[j]);
565 if (el->values[j].data == NULL && values[j].length != 0) {
580 * Canonicalize a message, merging elements of the same name
582 struct ldb_message *ldb_msg_canonicalize(struct ldb_context *ldb,
583 const struct ldb_message *msg)
586 struct ldb_message *msg2;
588 /* allocate msg2 message in NULL context
589 * so it should appear as 'leaked' in talloc reports */
590 ret = ldb_msg_canonicalize_ex(ldb, msg, (TALLOC_CTX*)NULL, &msg2);
591 if (ret != LDB_SUCCESS) {
599 * Canonicalize a message, merging elements of the same name
601 int ldb_msg_canonicalize_ex(struct ldb_context *ldb,
602 const struct ldb_message *msg,
604 struct ldb_message **_msg_out)
607 struct ldb_message *msg2;
609 msg2 = ldb_msg_copy(mem_ctx, msg);
611 return LDB_ERR_OPERATIONS_ERROR;
614 ldb_msg_sort_elements(msg2);
616 for (i=1; i < msg2->num_elements; i++) {
617 struct ldb_message_element *el1 = &msg2->elements[i-1];
618 struct ldb_message_element *el2 = &msg2->elements[i];
620 if (ldb_msg_element_compare_name(el1, el2) == 0) {
621 el1->values = talloc_realloc(msg2->elements,
622 el1->values, struct ldb_val,
623 el1->num_values + el2->num_values);
624 if (el1->num_values + el2->num_values > 0 && el1->values == NULL) {
626 return LDB_ERR_OPERATIONS_ERROR;
628 memcpy(el1->values + el1->num_values,
630 sizeof(struct ldb_val) * el2->num_values);
631 el1->num_values += el2->num_values;
632 talloc_free(discard_const_p(char, el2->name));
633 if ((i+1) < msg2->num_elements) {
634 memmove(el2, el2+1, sizeof(struct ldb_message_element) *
635 (msg2->num_elements - (i+1)));
637 msg2->num_elements--;
648 return a ldb_message representing the differences between msg1 and msg2. If you
649 then use this in a ldb_modify() call it can be used to save edits to a message
651 struct ldb_message *ldb_msg_diff(struct ldb_context *ldb,
652 struct ldb_message *msg1,
653 struct ldb_message *msg2)
656 struct ldb_message *mod;
658 /* allocate mod message in NULL context
659 * so it should appear as 'leaked' in talloc reports */
660 ldb_ret = ldb_msg_diff_ex(ldb, msg1, msg2,
661 (TALLOC_CTX*)NULL, &mod);
662 if (ldb_ret != LDB_SUCCESS) {
670 * return a ldb_message representing the differences between msg1 and msg2.
671 * If you then use this in a ldb_modify() call it can be used to save edits to a message
673 * Result message is constructed as follows:
674 * - LDB_FLAG_MOD_ADD - elements found only in msg2
675 * - LDB_FLAG_MOD_REPLACE - elements in msg2 that have different value in msg1
676 * Value for msg2 element is used
677 * - LDB_FLAG_MOD_DELETE - elements found only in msg2
679 * @return LDB_SUCCESS or LDB_ERR_OPERATIONS_ERROR
681 int ldb_msg_diff_ex(struct ldb_context *ldb,
682 struct ldb_message *msg1,
683 struct ldb_message *msg2,
685 struct ldb_message **_msg_out)
689 struct ldb_message *mod;
690 struct ldb_message_element *el;
691 TALLOC_CTX *temp_ctx;
693 temp_ctx = talloc_new(mem_ctx);
695 return LDB_ERR_OPERATIONS_ERROR;
698 mod = ldb_msg_new(temp_ctx);
704 mod->num_elements = 0;
705 mod->elements = NULL;
707 /* Canonicalize msg2 so we have no repeated elements
708 * Resulting message is allocated in mod's mem context,
709 * as we are going to move some elements from msg2 to
710 * mod object later */
711 ldb_res = ldb_msg_canonicalize_ex(ldb, msg2, (TALLOC_CTX*)mod, &msg2);
712 if (ldb_res != LDB_SUCCESS) {
716 /* look in msg2 to find elements that need to be added
718 for (i=0;i<msg2->num_elements;i++) {
719 el = ldb_msg_find_element(msg1, msg2->elements[i].name);
721 if (el && ldb_msg_element_compare(el, &msg2->elements[i]) == 0) {
725 ldb_res = ldb_msg_add(mod,
727 el ? LDB_FLAG_MOD_REPLACE : LDB_FLAG_MOD_ADD);
728 if (ldb_res != LDB_SUCCESS) {
733 /* look in msg1 to find elements that need to be deleted */
734 for (i=0;i<msg1->num_elements;i++) {
735 el = ldb_msg_find_element(msg2, msg1->elements[i].name);
737 ldb_res = ldb_msg_add_empty(mod,
738 msg1->elements[i].name,
739 LDB_FLAG_MOD_DELETE, NULL);
740 if (ldb_res != LDB_SUCCESS) {
746 /* steal resulting message into supplied context */
747 talloc_steal(mem_ctx, mod);
750 talloc_free(temp_ctx);
754 talloc_free(temp_ctx);
755 return LDB_ERR_OPERATIONS_ERROR;
759 int ldb_msg_sanity_check(struct ldb_context *ldb,
760 const struct ldb_message *msg)
764 /* basic check on DN */
765 if (msg->dn == NULL) {
766 /* TODO: return also an error string */
767 ldb_set_errstring(ldb, "ldb message lacks a DN!");
768 return LDB_ERR_INVALID_DN_SYNTAX;
771 /* basic syntax checks */
772 for (i = 0; i < msg->num_elements; i++) {
773 for (j = 0; j < msg->elements[i].num_values; j++) {
774 if (msg->elements[i].values[j].length == 0) {
775 TALLOC_CTX *mem_ctx = talloc_new(ldb);
776 /* an attribute cannot be empty */
777 /* TODO: return also an error string */
778 ldb_asprintf_errstring(ldb, "Element %s has empty attribute in ldb message (%s)!",
779 msg->elements[i].name,
780 ldb_dn_get_linearized(msg->dn));
781 talloc_free(mem_ctx);
782 return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
794 copy an attribute list. This only copies the array, not the elements
795 (ie. the elements are left as the same pointers)
797 const char **ldb_attr_list_copy(TALLOC_CTX *mem_ctx, const char * const *attrs)
802 for (i=0;attrs && attrs[i];i++) /* noop */ ;
803 ret = talloc_array(mem_ctx, const char *, i+1);
807 for (i=0;attrs && attrs[i];i++) {
816 copy an attribute list. This only copies the array, not the elements
817 (ie. the elements are left as the same pointers). The new attribute is added to the list.
819 const char **ldb_attr_list_copy_add(TALLOC_CTX *mem_ctx, const char * const *attrs, const char *new_attr)
825 for (i=0;attrs && attrs[i];i++) {
826 if (ldb_attr_cmp(attrs[i], new_attr) == 0) {
831 return ldb_attr_list_copy(mem_ctx, attrs);
833 ret = talloc_array(mem_ctx, const char *, i+2);
837 for (i=0;attrs && attrs[i];i++) {
847 return 1 if an attribute is in a list of attributes, or 0 otherwise
849 int ldb_attr_in_list(const char * const *attrs, const char *attr)
852 for (i=0;attrs && attrs[i];i++) {
853 if (ldb_attr_cmp(attrs[i], attr) == 0) {
862 rename the specified attribute in a search result
864 int ldb_msg_rename_attr(struct ldb_message *msg, const char *attr, const char *replace)
866 struct ldb_message_element *el = ldb_msg_find_element(msg, attr);
870 el->name = talloc_strdup(msg->elements, replace);
871 if (el->name == NULL) {
872 return LDB_ERR_OPERATIONS_ERROR;
879 copy the specified attribute in a search result to a new attribute
881 int ldb_msg_copy_attr(struct ldb_message *msg, const char *attr, const char *replace)
883 struct ldb_message_element *el = ldb_msg_find_element(msg, attr);
887 if (ldb_msg_add(msg, el, 0) != 0) {
888 return LDB_ERR_OPERATIONS_ERROR;
890 return ldb_msg_rename_attr(msg, attr, replace);
894 remove the specified element in a search result
896 void ldb_msg_remove_element(struct ldb_message *msg, struct ldb_message_element *el)
898 ptrdiff_t n = (el - msg->elements);
899 if (n >= msg->num_elements) {
900 /* should we abort() here? */
903 if (n != msg->num_elements-1) {
904 memmove(el, el+1, ((msg->num_elements-1) - n)*sizeof(*el));
911 remove the specified attribute in a search result
913 void ldb_msg_remove_attr(struct ldb_message *msg, const char *attr)
915 struct ldb_message_element *el;
917 while ((el = ldb_msg_find_element(msg, attr)) != NULL) {
918 ldb_msg_remove_element(msg, el);
923 return a LDAP formatted GeneralizedTime string
925 char *ldb_timestring(TALLOC_CTX *mem_ctx, time_t t)
927 struct tm *tm = gmtime(&t);
935 /* we now excatly how long this string will be */
936 ts = talloc_array(mem_ctx, char, 18);
938 /* formatted like: 20040408072012.0Z */
940 "%04u%02u%02u%02u%02u%02u.0Z",
941 tm->tm_year+1900, tm->tm_mon+1,
942 tm->tm_mday, tm->tm_hour, tm->tm_min,
954 convert a LDAP GeneralizedTime string to a time_t. Return 0 if unable to convert
956 time_t ldb_string_to_time(const char *s)
960 if (s == NULL) return 0;
962 memset(&tm, 0, sizeof(tm));
963 if (sscanf(s, "%04u%02u%02u%02u%02u%02u.0Z",
964 &tm.tm_year, &tm.tm_mon, &tm.tm_mday,
965 &tm.tm_hour, &tm.tm_min, &tm.tm_sec) != 6) {
975 convert a LDAP GeneralizedTime string in ldb_val format to a
978 int ldb_val_to_time(const struct ldb_val *v, time_t *t)
982 if (v == NULL || !v->data || v->length < 17) {
983 return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
986 memset(&tm, 0, sizeof(tm));
988 if (sscanf((char *)v->data, "%04u%02u%02u%02u%02u%02u.0Z",
989 &tm.tm_year, &tm.tm_mon, &tm.tm_mday,
990 &tm.tm_hour, &tm.tm_min, &tm.tm_sec) != 6) {
991 return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
1002 return a LDAP formatted UTCTime string
1004 char *ldb_timestring_utc(TALLOC_CTX *mem_ctx, time_t t)
1006 struct tm *tm = gmtime(&t);
1014 /* we now excatly how long this string will be */
1015 ts = talloc_array(mem_ctx, char, 14);
1017 /* formatted like: 20040408072012.0Z => 040408072012Z */
1018 r = snprintf(ts, 14,
1019 "%02u%02u%02u%02u%02u%02uZ",
1020 (tm->tm_year+1900)%100, tm->tm_mon+1,
1021 tm->tm_mday, tm->tm_hour, tm->tm_min,
1033 convert a LDAP UTCTime string to a time_t. Return 0 if unable to convert
1035 time_t ldb_string_utc_to_time(const char *s)
1039 if (s == NULL) return 0;
1041 memset(&tm, 0, sizeof(tm));
1042 if (sscanf(s, "%02u%02u%02u%02u%02u%02uZ",
1043 &tm.tm_year, &tm.tm_mon, &tm.tm_mday,
1044 &tm.tm_hour, &tm.tm_min, &tm.tm_sec) != 6) {
1047 if (tm.tm_year < 50) {
1057 dump a set of results to a file. Useful from within gdb
1059 void ldb_dump_results(struct ldb_context *ldb, struct ldb_result *result, FILE *f)
1063 for (i = 0; i < result->count; i++) {
1064 struct ldb_ldif ldif;
1065 fprintf(f, "# record %d\n", i+1);
1066 ldif.changetype = LDB_CHANGETYPE_NONE;
1067 ldif.msg = result->msgs[i];
1068 ldb_ldif_write_file(ldb, f, &ldif);
1073 checks for a string attribute. Returns "1" on match and otherwise "0".
1075 int ldb_msg_check_string_attribute(const struct ldb_message *msg,
1076 const char *name, const char *value)
1078 struct ldb_message_element *el;
1081 el = ldb_msg_find_element(msg, name);
1086 val.data = discard_const_p(uint8_t, value);
1087 val.length = strlen(value);
1089 if (ldb_msg_find_val(el, &val)) {