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-rw-r--r--lib/ldb/common/ldb_match.c826
1 files changed, 826 insertions, 0 deletions
diff --git a/lib/ldb/common/ldb_match.c b/lib/ldb/common/ldb_match.c
new file mode 100644
index 0000000..463a24c
--- /dev/null
+++ b/lib/ldb/common/ldb_match.c
@@ -0,0 +1,826 @@
+/*
+ ldb database library
+
+ Copyright (C) Andrew Tridgell 2004-2005
+ Copyright (C) Simo Sorce 2005
+
+ ** NOTE! The following LGPL license applies to the ldb
+ ** library. This does NOT imply that all of Samba is released
+ ** under the LGPL
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 3 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, see <http://www.gnu.org/licenses/>.
+*/
+
+/*
+ * Name: ldb
+ *
+ * Component: ldb expression matching
+ *
+ * Description: ldb expression matching
+ *
+ * Author: Andrew Tridgell
+ */
+
+#include "ldb_private.h"
+#include "dlinklist.h"
+#include "ldb_handlers.h"
+
+/*
+ check if the scope matches in a search result
+*/
+int ldb_match_scope(struct ldb_context *ldb,
+ struct ldb_dn *base,
+ struct ldb_dn *dn,
+ enum ldb_scope scope)
+{
+ int ret = 0;
+
+ if (base == NULL || dn == NULL) {
+ return 1;
+ }
+
+ switch (scope) {
+ case LDB_SCOPE_BASE:
+ if (ldb_dn_compare(base, dn) == 0) {
+ ret = 1;
+ }
+ break;
+
+ case LDB_SCOPE_ONELEVEL:
+ if (ldb_dn_get_comp_num(dn) == (ldb_dn_get_comp_num(base) + 1)) {
+ if (ldb_dn_compare_base(base, dn) == 0) {
+ ret = 1;
+ }
+ }
+ break;
+
+ case LDB_SCOPE_SUBTREE:
+ default:
+ if (ldb_dn_compare_base(base, dn) == 0) {
+ ret = 1;
+ }
+ break;
+ }
+
+ return ret;
+}
+
+
+/*
+ match if node is present
+*/
+static int ldb_match_present(struct ldb_context *ldb,
+ const struct ldb_message *msg,
+ const struct ldb_parse_tree *tree,
+ enum ldb_scope scope, bool *matched)
+{
+ const struct ldb_schema_attribute *a;
+ struct ldb_message_element *el;
+
+ if (ldb_attr_dn(tree->u.present.attr) == 0) {
+ *matched = true;
+ return LDB_SUCCESS;
+ }
+
+ el = ldb_msg_find_element(msg, tree->u.present.attr);
+ if (el == NULL) {
+ *matched = false;
+ return LDB_SUCCESS;
+ }
+
+ a = ldb_schema_attribute_by_name(ldb, el->name);
+ if (!a) {
+ return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
+ }
+
+ if (a->syntax->operator_fn) {
+ unsigned int i;
+ for (i = 0; i < el->num_values; i++) {
+ int ret = a->syntax->operator_fn(ldb, LDB_OP_PRESENT, a, &el->values[i], NULL, matched);
+ if (ret != LDB_SUCCESS) return ret;
+ if (*matched) return LDB_SUCCESS;
+ }
+ *matched = false;
+ return LDB_SUCCESS;
+ }
+
+ *matched = true;
+ return LDB_SUCCESS;
+}
+
+static int ldb_match_comparison(struct ldb_context *ldb,
+ const struct ldb_message *msg,
+ const struct ldb_parse_tree *tree,
+ enum ldb_scope scope,
+ enum ldb_parse_op comp_op, bool *matched)
+{
+ unsigned int i;
+ struct ldb_message_element *el;
+ const struct ldb_schema_attribute *a;
+
+ /* FIXME: APPROX comparison not handled yet */
+ if (comp_op == LDB_OP_APPROX) {
+ return LDB_ERR_INAPPROPRIATE_MATCHING;
+ }
+
+ el = ldb_msg_find_element(msg, tree->u.comparison.attr);
+ if (el == NULL) {
+ *matched = false;
+ return LDB_SUCCESS;
+ }
+
+ a = ldb_schema_attribute_by_name(ldb, el->name);
+ if (!a) {
+ return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
+ }
+
+ for (i = 0; i < el->num_values; i++) {
+ if (a->syntax->operator_fn) {
+ int ret;
+ ret = a->syntax->operator_fn(ldb, comp_op, a, &el->values[i], &tree->u.comparison.value, matched);
+ if (ret != LDB_SUCCESS) return ret;
+ if (*matched) return LDB_SUCCESS;
+ } else {
+ int ret = a->syntax->comparison_fn(ldb, ldb, &el->values[i], &tree->u.comparison.value);
+
+ if (ret == 0) {
+ *matched = true;
+ return LDB_SUCCESS;
+ }
+ if (ret > 0 && comp_op == LDB_OP_GREATER) {
+ *matched = true;
+ return LDB_SUCCESS;
+ }
+ if (ret < 0 && comp_op == LDB_OP_LESS) {
+ *matched = true;
+ return LDB_SUCCESS;
+ }
+ }
+ }
+
+ *matched = false;
+ return LDB_SUCCESS;
+}
+
+/*
+ match a simple leaf node
+*/
+static int ldb_match_equality(struct ldb_context *ldb,
+ const struct ldb_message *msg,
+ const struct ldb_parse_tree *tree,
+ enum ldb_scope scope,
+ bool *matched)
+{
+ unsigned int i;
+ struct ldb_message_element *el;
+ const struct ldb_schema_attribute *a;
+ struct ldb_dn *valuedn;
+ int ret;
+
+ if (ldb_attr_dn(tree->u.equality.attr) == 0) {
+ valuedn = ldb_dn_from_ldb_val(ldb, ldb, &tree->u.equality.value);
+ if (valuedn == NULL) {
+ return LDB_ERR_INVALID_DN_SYNTAX;
+ }
+
+ ret = ldb_dn_compare(msg->dn, valuedn);
+
+ talloc_free(valuedn);
+
+ *matched = (ret == 0);
+ return LDB_SUCCESS;
+ }
+
+ /* TODO: handle the "*" case derived from an extended search
+ operation without the attibute type defined */
+ el = ldb_msg_find_element(msg, tree->u.equality.attr);
+ if (el == NULL) {
+ *matched = false;
+ return LDB_SUCCESS;
+ }
+
+ a = ldb_schema_attribute_by_name(ldb, el->name);
+ if (a == NULL) {
+ return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
+ }
+
+ for (i=0;i<el->num_values;i++) {
+ if (a->syntax->operator_fn) {
+ ret = a->syntax->operator_fn(ldb, LDB_OP_EQUALITY, a,
+ &tree->u.equality.value, &el->values[i], matched);
+ if (ret != LDB_SUCCESS) return ret;
+ if (*matched) return LDB_SUCCESS;
+ } else {
+ if (a->syntax->comparison_fn(ldb, ldb, &tree->u.equality.value,
+ &el->values[i]) == 0) {
+ *matched = true;
+ return LDB_SUCCESS;
+ }
+ }
+ }
+
+ *matched = false;
+ return LDB_SUCCESS;
+}
+
+static int ldb_wildcard_compare(struct ldb_context *ldb,
+ const struct ldb_parse_tree *tree,
+ const struct ldb_val value, bool *matched)
+{
+ const struct ldb_schema_attribute *a;
+ struct ldb_val val;
+ struct ldb_val cnk;
+ struct ldb_val *chunk;
+ uint8_t *save_p = NULL;
+ unsigned int c = 0;
+
+ if (tree->operation != LDB_OP_SUBSTRING) {
+ *matched = false;
+ return LDB_ERR_INAPPROPRIATE_MATCHING;
+ }
+
+ a = ldb_schema_attribute_by_name(ldb, tree->u.substring.attr);
+ if (!a) {
+ return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
+ }
+
+ if (tree->u.substring.chunks == NULL) {
+ *matched = false;
+ return LDB_SUCCESS;
+ }
+
+ /* No need to just copy this value for a binary match */
+ if (a->syntax->canonicalise_fn != ldb_handler_copy) {
+ if (a->syntax->canonicalise_fn(ldb, ldb, &value, &val) != 0) {
+ return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
+ }
+
+ /*
+ * Only set save_p if we allocate (call
+ * a->syntax->canonicalise_fn()), as we
+ * talloc_free(save_p) below to clean up
+ */
+ save_p = val.data;
+ } else {
+ val = value;
+ }
+
+ cnk.data = NULL;
+
+ if ( ! tree->u.substring.start_with_wildcard ) {
+ uint8_t *cnk_to_free = NULL;
+
+ chunk = tree->u.substring.chunks[c];
+ /* No need to just copy this value for a binary match */
+ if (a->syntax->canonicalise_fn != ldb_handler_copy) {
+ if (a->syntax->canonicalise_fn(ldb, ldb, chunk, &cnk) != 0) {
+ goto mismatch;
+ }
+
+ cnk_to_free = cnk.data;
+ } else {
+ cnk = *chunk;
+ }
+
+ /* This deals with wildcard prefix searches on binary attributes (eg objectGUID) */
+ if (cnk.length > val.length) {
+ TALLOC_FREE(cnk_to_free);
+ goto mismatch;
+ }
+ /*
+ * Empty strings are returned as length 0. Ensure
+ * we can cope with this.
+ */
+ if (cnk.length == 0) {
+ TALLOC_FREE(cnk_to_free);
+ goto mismatch;
+ }
+
+ if (memcmp((char *)val.data, (char *)cnk.data, cnk.length) != 0) {
+ TALLOC_FREE(cnk_to_free);
+ goto mismatch;
+ }
+
+ val.length -= cnk.length;
+ val.data += cnk.length;
+ c++;
+ TALLOC_FREE(cnk_to_free);
+ cnk.data = NULL;
+ }
+
+ while (tree->u.substring.chunks[c]) {
+ uint8_t *p;
+ uint8_t *cnk_to_free = NULL;
+
+ chunk = tree->u.substring.chunks[c];
+ /* No need to just copy this value for a binary match */
+ if (a->syntax->canonicalise_fn != ldb_handler_copy) {
+ if (a->syntax->canonicalise_fn(ldb, ldb, chunk, &cnk) != 0) {
+ goto mismatch;
+ }
+
+ cnk_to_free = cnk.data;
+ } else {
+ cnk = *chunk;
+ }
+ /*
+ * Empty strings are returned as length 0. Ensure
+ * we can cope with this.
+ */
+ if (cnk.length == 0) {
+ TALLOC_FREE(cnk_to_free);
+ goto mismatch;
+ }
+ if (cnk.length > val.length) {
+ TALLOC_FREE(cnk_to_free);
+ goto mismatch;
+ }
+
+ if ( (tree->u.substring.chunks[c + 1]) == NULL &&
+ (! tree->u.substring.end_with_wildcard) ) {
+ /*
+ * The last bit, after all the asterisks, must match
+ * exactly the last bit of the string.
+ */
+ int cmp;
+ p = val.data + val.length - cnk.length;
+ cmp = memcmp(p,
+ cnk.data,
+ cnk.length);
+ TALLOC_FREE(cnk_to_free);
+
+ if (cmp != 0) {
+ goto mismatch;
+ }
+ } else {
+ /*
+ * Values might be binary blobs. Don't use string
+ * search, but memory search instead.
+ */
+ p = memmem((const void *)val.data, val.length,
+ (const void *)cnk.data, cnk.length);
+ if (p == NULL) {
+ TALLOC_FREE(cnk_to_free);
+ goto mismatch;
+ }
+ /* move val to the end of the match */
+ p += cnk.length;
+ val.length -= (p - val.data);
+ val.data = p;
+ TALLOC_FREE(cnk_to_free);
+ }
+ c++;
+ }
+
+ talloc_free(save_p);
+ *matched = true;
+ return LDB_SUCCESS;
+
+mismatch:
+ *matched = false;
+ talloc_free(save_p);
+ return LDB_SUCCESS;
+}
+
+/*
+ match a simple leaf node
+*/
+static int ldb_match_substring(struct ldb_context *ldb,
+ const struct ldb_message *msg,
+ const struct ldb_parse_tree *tree,
+ enum ldb_scope scope, bool *matched)
+{
+ unsigned int i;
+ struct ldb_message_element *el;
+
+ el = ldb_msg_find_element(msg, tree->u.substring.attr);
+ if (el == NULL) {
+ *matched = false;
+ return LDB_SUCCESS;
+ }
+
+ for (i = 0; i < el->num_values; i++) {
+ int ret;
+ ret = ldb_wildcard_compare(ldb, tree, el->values[i], matched);
+ if (ret != LDB_SUCCESS) return ret;
+ if (*matched) return LDB_SUCCESS;
+ }
+
+ *matched = false;
+ return LDB_SUCCESS;
+}
+
+
+/*
+ bitwise and/or comparator depending on oid
+*/
+static int ldb_comparator_bitmask(const char *oid, const struct ldb_val *v1, const struct ldb_val *v2,
+ bool *matched)
+{
+ uint64_t i1, i2;
+ char ibuf[100];
+ char *endptr = NULL;
+
+ if (v1->length >= sizeof(ibuf)-1) {
+ return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
+ }
+ memcpy(ibuf, (char *)v1->data, v1->length);
+ ibuf[v1->length] = 0;
+ i1 = strtoull(ibuf, &endptr, 0);
+ if (endptr != NULL) {
+ if (endptr == ibuf || *endptr != 0) {
+ return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
+ }
+ }
+
+ if (v2->length >= sizeof(ibuf)-1) {
+ return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
+ }
+ endptr = NULL;
+ memcpy(ibuf, (char *)v2->data, v2->length);
+ ibuf[v2->length] = 0;
+ i2 = strtoull(ibuf, &endptr, 0);
+ if (endptr != NULL) {
+ if (endptr == ibuf || *endptr != 0) {
+ return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
+ }
+ }
+ if (strcmp(LDB_OID_COMPARATOR_AND, oid) == 0) {
+ *matched = ((i1 & i2) == i2);
+ } else if (strcmp(LDB_OID_COMPARATOR_OR, oid) == 0) {
+ *matched = ((i1 & i2) != 0);
+ } else {
+ return LDB_ERR_INAPPROPRIATE_MATCHING;
+ }
+ return LDB_SUCCESS;
+}
+
+static int ldb_match_bitmask(struct ldb_context *ldb,
+ const char *oid,
+ const struct ldb_message *msg,
+ const char *attribute_to_match,
+ const struct ldb_val *value_to_match,
+ bool *matched)
+{
+ unsigned int i;
+ struct ldb_message_element *el;
+
+ /* find the message element */
+ el = ldb_msg_find_element(msg, attribute_to_match);
+ if (el == NULL) {
+ *matched = false;
+ return LDB_SUCCESS;
+ }
+
+ for (i=0;i<el->num_values;i++) {
+ int ret;
+ struct ldb_val *v = &el->values[i];
+
+ ret = ldb_comparator_bitmask(oid, v, value_to_match, matched);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ if (*matched) {
+ return LDB_SUCCESS;
+ }
+ }
+
+ *matched = false;
+ return LDB_SUCCESS;
+}
+
+/*
+ always return false
+*/
+static int ldb_comparator_false(struct ldb_context *ldb,
+ const char *oid,
+ const struct ldb_message *msg,
+ const char *attribute_to_match,
+ const struct ldb_val *value_to_match,
+ bool *matched)
+{
+ *matched = false;
+ return LDB_SUCCESS;
+}
+
+
+static const struct ldb_extended_match_rule *ldb_find_extended_match_rule(struct ldb_context *ldb,
+ const char *oid)
+{
+ struct ldb_extended_match_entry *extended_match_rule;
+
+ for (extended_match_rule = ldb->extended_match_rules;
+ extended_match_rule;
+ extended_match_rule = extended_match_rule->next) {
+ if (strcmp(extended_match_rule->rule->oid, oid) == 0) {
+ return extended_match_rule->rule;
+ }
+ }
+
+ return NULL;
+}
+
+
+/*
+ extended match, handles things like bitops
+*/
+static int ldb_match_extended(struct ldb_context *ldb,
+ const struct ldb_message *msg,
+ const struct ldb_parse_tree *tree,
+ enum ldb_scope scope, bool *matched)
+{
+ const struct ldb_extended_match_rule *rule;
+
+ if (tree->u.extended.dnAttributes) {
+ /* FIXME: We really need to find out what this ":dn" part in
+ * an extended match means and how to handle it. For now print
+ * only a warning to have s3 winbind and other tools working
+ * against us. - Matthias */
+ ldb_debug(ldb, LDB_DEBUG_WARNING, "ldb: dnAttributes extended match not supported yet");
+ }
+ if (tree->u.extended.rule_id == NULL) {
+ ldb_debug(ldb, LDB_DEBUG_ERROR, "ldb: no-rule extended matches not supported yet");
+ return LDB_ERR_INAPPROPRIATE_MATCHING;
+ }
+ if (tree->u.extended.attr == NULL) {
+ ldb_debug(ldb, LDB_DEBUG_ERROR, "ldb: no-attribute extended matches not supported yet");
+ return LDB_ERR_INAPPROPRIATE_MATCHING;
+ }
+
+ rule = ldb_find_extended_match_rule(ldb, tree->u.extended.rule_id);
+ if (rule == NULL) {
+ *matched = false;
+ ldb_debug(ldb, LDB_DEBUG_ERROR, "ldb: unknown extended rule_id %s",
+ tree->u.extended.rule_id);
+ return LDB_SUCCESS;
+ }
+
+ return rule->callback(ldb, rule->oid, msg,
+ tree->u.extended.attr,
+ &tree->u.extended.value, matched);
+}
+
+static bool ldb_must_suppress_match(const struct ldb_message *msg,
+ const struct ldb_parse_tree *tree)
+{
+ const char *attr = NULL;
+ struct ldb_message_element *el = NULL;
+
+ attr = ldb_parse_tree_get_attr(tree);
+ if (attr == NULL) {
+ return false;
+ }
+
+ /* find the message element */
+ el = ldb_msg_find_element(msg, attr);
+ if (el == NULL) {
+ return false;
+ }
+
+ return ldb_msg_element_is_inaccessible(el);
+}
+
+/*
+ Check if a particular message will match the given filter
+
+ set *matched to true if it matches, false otherwise
+
+ returns LDB_SUCCESS or an error
+
+ this is a recursive function, and does short-circuit evaluation
+ */
+int ldb_match_message(struct ldb_context *ldb,
+ const struct ldb_message *msg,
+ const struct ldb_parse_tree *tree,
+ enum ldb_scope scope, bool *matched)
+{
+ unsigned int i;
+ int ret;
+
+ *matched = false;
+
+ if (scope != LDB_SCOPE_BASE && ldb_dn_is_special(msg->dn)) {
+ /* don't match special records except on base searches */
+ return LDB_SUCCESS;
+ }
+
+ /*
+ * Suppress matches on confidential attributes (handled
+ * manually in extended matches as these can do custom things
+ * like read other parts of the DB or other attributes).
+ */
+ if (tree->operation != LDB_OP_EXTENDED) {
+ if (ldb_must_suppress_match(msg, tree)) {
+ return LDB_SUCCESS;
+ }
+ }
+
+ switch (tree->operation) {
+ case LDB_OP_AND:
+ for (i=0;i<tree->u.list.num_elements;i++) {
+ ret = ldb_match_message(ldb, msg, tree->u.list.elements[i], scope, matched);
+ if (ret != LDB_SUCCESS) return ret;
+ if (!*matched) return LDB_SUCCESS;
+ }
+ *matched = true;
+ return LDB_SUCCESS;
+
+ case LDB_OP_OR:
+ for (i=0;i<tree->u.list.num_elements;i++) {
+ ret = ldb_match_message(ldb, msg, tree->u.list.elements[i], scope, matched);
+ if (ret != LDB_SUCCESS) return ret;
+ if (*matched) return LDB_SUCCESS;
+ }
+ *matched = false;
+ return LDB_SUCCESS;
+
+ case LDB_OP_NOT:
+ ret = ldb_match_message(ldb, msg, tree->u.isnot.child, scope, matched);
+ if (ret != LDB_SUCCESS) return ret;
+ *matched = ! *matched;
+ return LDB_SUCCESS;
+
+ case LDB_OP_EQUALITY:
+ return ldb_match_equality(ldb, msg, tree, scope, matched);
+
+ case LDB_OP_SUBSTRING:
+ return ldb_match_substring(ldb, msg, tree, scope, matched);
+
+ case LDB_OP_GREATER:
+ return ldb_match_comparison(ldb, msg, tree, scope, LDB_OP_GREATER, matched);
+
+ case LDB_OP_LESS:
+ return ldb_match_comparison(ldb, msg, tree, scope, LDB_OP_LESS, matched);
+
+ case LDB_OP_PRESENT:
+ return ldb_match_present(ldb, msg, tree, scope, matched);
+
+ case LDB_OP_APPROX:
+ return ldb_match_comparison(ldb, msg, tree, scope, LDB_OP_APPROX, matched);
+
+ case LDB_OP_EXTENDED:
+ return ldb_match_extended(ldb, msg, tree, scope, matched);
+ }
+
+ return LDB_ERR_INAPPROPRIATE_MATCHING;
+}
+
+/*
+ return 0 if the given parse tree matches the given message. Assumes
+ the message is in sorted order
+
+ return 1 if it matches, and 0 if it doesn't match
+*/
+
+int ldb_match_msg(struct ldb_context *ldb,
+ const struct ldb_message *msg,
+ const struct ldb_parse_tree *tree,
+ struct ldb_dn *base,
+ enum ldb_scope scope)
+{
+ bool matched;
+ int ret;
+
+ if ( ! ldb_match_scope(ldb, base, msg->dn, scope) ) {
+ return 0;
+ }
+
+ ret = ldb_match_message(ldb, msg, tree, scope, &matched);
+ if (ret != LDB_SUCCESS) {
+ /* to match the old API, we need to consider this a
+ failure to match */
+ return 0;
+ }
+ return matched?1:0;
+}
+
+int ldb_match_msg_error(struct ldb_context *ldb,
+ const struct ldb_message *msg,
+ const struct ldb_parse_tree *tree,
+ struct ldb_dn *base,
+ enum ldb_scope scope,
+ bool *matched)
+{
+ if ( ! ldb_match_scope(ldb, base, msg->dn, scope) ) {
+ *matched = false;
+ return LDB_SUCCESS;
+ }
+
+ return ldb_match_message(ldb, msg, tree, scope, matched);
+}
+
+int ldb_match_msg_objectclass(const struct ldb_message *msg,
+ const char *objectclass)
+{
+ unsigned int i;
+ struct ldb_message_element *el = ldb_msg_find_element(msg, "objectClass");
+ if (!el) {
+ return 0;
+ }
+ for (i=0; i < el->num_values; i++) {
+ if (ldb_attr_cmp((const char *)el->values[i].data, objectclass) == 0) {
+ return 1;
+ }
+ }
+ return 0;
+}
+
+_PRIVATE_ int ldb_register_extended_match_rules(struct ldb_context *ldb)
+{
+ struct ldb_extended_match_rule *bitmask_and;
+ struct ldb_extended_match_rule *bitmask_or;
+ struct ldb_extended_match_rule *always_false;
+ int ret;
+
+ /* Register bitmask-and match */
+ bitmask_and = talloc_zero(ldb, struct ldb_extended_match_rule);
+ if (bitmask_and == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ bitmask_and->oid = LDB_OID_COMPARATOR_AND;
+ bitmask_and->callback = ldb_match_bitmask;
+
+ ret = ldb_register_extended_match_rule(ldb, bitmask_and);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ /* Register bitmask-or match */
+ bitmask_or = talloc_zero(ldb, struct ldb_extended_match_rule);
+ if (bitmask_or == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ bitmask_or->oid = LDB_OID_COMPARATOR_OR;
+ bitmask_or->callback = ldb_match_bitmask;
+
+ ret = ldb_register_extended_match_rule(ldb, bitmask_or);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ /* Register always-false match */
+ always_false = talloc_zero(ldb, struct ldb_extended_match_rule);
+ if (always_false == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ always_false->oid = SAMBA_LDAP_MATCH_ALWAYS_FALSE;
+ always_false->callback = ldb_comparator_false;
+
+ ret = ldb_register_extended_match_rule(ldb, always_false);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ return LDB_SUCCESS;
+}
+
+/*
+ register a new ldb extended matching rule
+*/
+int ldb_register_extended_match_rule(struct ldb_context *ldb,
+ const struct ldb_extended_match_rule *rule)
+{
+ const struct ldb_extended_match_rule *lookup_rule;
+ struct ldb_extended_match_entry *entry;
+
+ lookup_rule = ldb_find_extended_match_rule(ldb, rule->oid);
+ if (lookup_rule) {
+ return LDB_ERR_ENTRY_ALREADY_EXISTS;
+ }
+
+ entry = talloc_zero(ldb, struct ldb_extended_match_entry);
+ if (!entry) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ entry->rule = rule;
+ DLIST_ADD_END(ldb->extended_match_rules, entry);
+
+ return LDB_SUCCESS;
+}
+
+int ldb_register_redact_callback(struct ldb_context *ldb,
+ ldb_redact_fn redact_fn,
+ struct ldb_module *module)
+{
+ if (ldb->redact.callback != NULL) {
+ return LDB_ERR_ENTRY_ALREADY_EXISTS;
+ }
+
+ ldb->redact.callback = redact_fn;
+ ldb->redact.module = module;
+ return LDB_SUCCESS;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 19:05:32 +0000