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-rw-r--r--lib/ldb/common/ldb_dn.c56
-rw-r--r--lib/ldb/include/ldb_module.h7
2 files changed, 63 insertions, 0 deletions
diff --git a/lib/ldb/common/ldb_dn.c b/lib/ldb/common/ldb_dn.c
index 6b1ef0306f..b910489a8e 100644
--- a/lib/ldb/common/ldb_dn.c
+++ b/lib/ldb/common/ldb_dn.c
@@ -1684,6 +1684,62 @@ bool ldb_dn_remove_child_components(struct ldb_dn *dn, unsigned int num)
return true;
}
+
+/* replace the components of a DN with those from another DN, without
+ * touching the extended components
+ *
+ * return true if successful and false if not
+ * if false is returned the dn may be marked invalid
+ */
+bool ldb_dn_replace_components(struct ldb_dn *dn, struct ldb_dn *new_dn)
+{
+ int i;
+
+ if ( ! ldb_dn_validate(dn) || ! ldb_dn_validate(new_dn)) {
+ return false;
+ }
+
+ /* free components */
+ for (i = 0; i < dn->comp_num; i++) {
+ LDB_FREE(dn->components[i].name);
+ LDB_FREE(dn->components[i].value.data);
+ LDB_FREE(dn->components[i].cf_name);
+ LDB_FREE(dn->components[i].cf_value.data);
+ }
+
+ dn->components = talloc_realloc(dn,
+ dn->components,
+ struct ldb_dn_component,
+ new_dn->comp_num);
+ if (dn->components == NULL) {
+ ldb_dn_mark_invalid(dn);
+ return false;
+ }
+
+ dn->comp_num = new_dn->comp_num;
+ dn->valid_case = new_dn->valid_case;
+
+ for (i = 0; i < dn->comp_num; i++) {
+ dn->components[i] = ldb_dn_copy_component(dn->components, &new_dn->components[i]);
+ if (dn->components[i].name == NULL) {
+ ldb_dn_mark_invalid(dn);
+ return false;
+ }
+ }
+ if (new_dn->linearized == NULL) {
+ dn->linearized = NULL;
+ } else {
+ dn->linearized = talloc_strdup(dn, new_dn->linearized);
+ if (dn->linearized == NULL) {
+ ldb_dn_mark_invalid(dn);
+ return false;
+ }
+ }
+
+ return true;
+}
+
+
struct ldb_dn *ldb_dn_get_parent(TALLOC_CTX *mem_ctx, struct ldb_dn *dn)
{
struct ldb_dn *new_dn;
diff --git a/lib/ldb/include/ldb_module.h b/lib/ldb/include/ldb_module.h
index 6d6fff251c..22d24dbdea 100644
--- a/lib/ldb/include/ldb_module.h
+++ b/lib/ldb/include/ldb_module.h
@@ -340,5 +340,12 @@ int ldb_module_init_chain(struct ldb_context *ldb, struct ldb_module *module);
*/
int ldb_init_module(const char *version);
+/* replace the components of a DN with those from another DN, without
+ * touching the extended components
+ *
+ * return true if successful and false if not
+ * if false is returned the dn may be marked invalid
+ */
+bool ldb_dn_replace_components(struct ldb_dn *dn, struct ldb_dn *new_dn);
#endif