r8667: Further simply the provision script, by removing the 'name' attribute.

This is now calculated on the fly for every add and modify.

Andrew Bartlett
(This used to be commit ed1f2e029c840d2b3ecb49dbe6e8cd67588eeeed)

4 files changed, 311 insertions, 21 deletions

diff --git a/source4/lib/ldb/common/ldb_modules.c b/source4/lib/ldb/common/ldb_modules.c
index dc1a90ebc2..d6213be79a 100644
--- a/source4/lib/ldb/common/ldb_modules.c
+++ b/source4/lib/ldb/common/ldb_modules.c
@@ -199,6 +199,16 @@ int ldb_load_modules(struct ldb_context *ldb, const char *options[])
 			continue;
 		}
 
+		if (strcmp(modules[i], "rdn_name") == 0) {
+			current = rdn_name_module_init(ldb, options);
+			if (!current) {
+				ldb_debug(ldb, LDB_DEBUG_FATAL, "function 'init_module' in %s fails\n", modules[i]);
+				return -1;
+			}
+			DLIST_ADD(ldb->modules, current);
+			continue;
+		}
+
 #ifdef _SAMBA_BUILD_
 		if (strcmp(modules[i], "samldb") == 0) {
 			current = samldb_module_init(ldb, options);
diff --git a/source4/lib/ldb/config.mk b/source4/lib/ldb/config.mk
index 39bf004e5d..fe339f9e17 100644
--- a/source4/lib/ldb/config.mk
+++ b/source4/lib/ldb/config.mk
@@ -17,6 +17,15 @@ INIT_OBJ_FILES = \
 ################################################
 
 ################################################
+# Start MODULE libldb_rdn_name
+[MODULE::libldb_rdn_name]
+SUBSYSTEM = LIBLDB
+INIT_OBJ_FILES = \
+		lib/ldb/modules/rdn_name.o
+# End MODULE libldb_rdn_name
+################################################
+
+################################################
 # Start MODULE libldb_schema
 [MODULE::libldb_schema]
 SUBSYSTEM = LIBLDB
diff --git a/source4/lib/ldb/modules/rdn_name.c b/source4/lib/ldb/modules/rdn_name.c
new file mode 100644
index 0000000000..6a11ab87fe
--- /dev/null
+++ b/source4/lib/ldb/modules/rdn_name.c
@@ -0,0 +1,276 @@
+/* 
+   ldb database library
+
+   Copyright (C) Simo Sorce  2004
+
+     ** 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 2 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, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+/*
+ *  Name: ldb
+ *
+ *  Component: ldb objectguid module
+ *
+ *  Description: add a unique objectGUID onto every new record
+ *
+ *  Author: Simo Sorce
+ */
+
+#include "includes.h"
+#include "ldb/include/ldb.h"
+#include "ldb/include/ldb_private.h"
+#include <time.h>
+
+struct private_data {
+	const char *error_string;
+};
+
+static int rdn_name_search(struct ldb_module *module, const char *base,
+				  enum ldb_scope scope, const char *expression,
+				  const char * const *attrs, struct ldb_message ***res)
+{
+	ldb_debug(module->ldb, LDB_DEBUG_TRACE, "rdn_name_search\n");
+	return ldb_next_search(module, base, scope, expression, attrs, res);
+}
+
+static int rdn_name_search_bytree(struct ldb_module *module, const char *base,
+				    enum ldb_scope scope, struct ldb_parse_tree *tree,
+				    const char * const *attrs, struct ldb_message ***res)
+{
+	ldb_debug(module->ldb, LDB_DEBUG_TRACE, "rdn_name_search\n");
+	return ldb_next_search_bytree(module, base, scope, tree, attrs, res);
+}
+
+static struct ldb_message_element *rdn_name_find_attribute(const struct ldb_message *msg, const char *name)
+{
+	int i;
+
+	for (i = 0; i < msg->num_elements; i++) {
+		if (ldb_attr_cmp(name, msg->elements[i].name) == 0) {
+			return &msg->elements[i];
+		}
+	}
+
+	return NULL;
+}
+
+static struct ldb_dn_component *get_rdn(void *mem_ctx, const char *dn)
+{
+	struct ldb_dn *dn_exploded = ldb_dn_explode(mem_ctx, dn);
+
+	if (!dn_exploded) {
+		return NULL;
+	}
+	
+	if (dn_exploded->comp_num < 1) {
+		return NULL;
+	}
+	
+	return  &dn_exploded->components[0];
+}
+
+/* add_record: add crateTimestamp/modifyTimestamp attributes */
+static int rdn_name_add_record(struct ldb_module *module, const struct ldb_message *msg)
+{
+	struct ldb_message *msg2;
+	struct ldb_message_element *attribute;
+	struct ldb_dn_component *rdn;
+	int ret, i;
+
+	ldb_debug(module->ldb, LDB_DEBUG_TRACE, "rdn_name_add_record\n");
+
+	if (msg->dn[0] == '@') { /* do not manipulate our control entries */
+		return ldb_next_add_record(module, msg);
+	}
+
+	/* Perhaps someone above us knows better */
+	if ((attribute = rdn_name_find_attribute(msg, "name")) != NULL ) {
+		return ldb_next_add_record(module, msg);
+	}
+
+	msg2 = talloc(module, struct ldb_message);
+	if (!msg2) {
+		return -1;
+	}
+
+	msg2->dn = msg->dn;
+	msg2->num_elements = msg->num_elements;
+	msg2->private_data = msg->private_data;
+	msg2->elements = talloc_array(msg2, struct ldb_message_element, msg2->num_elements);
+	for (i = 0; i < msg2->num_elements; i++) {
+		msg2->elements[i] = msg->elements[i];
+	}
+
+	rdn = get_rdn(msg2, msg2->dn);
+	if (!rdn) {
+		return -1;
+	}
+	
+	if (ldb_msg_add_value(module->ldb, msg2, "name", &rdn->value) != 0) {
+		return -1;
+	}
+
+	ret = ldb_next_add_record(module, msg2);
+	talloc_free(msg2);
+
+	return ret;
+}
+
+/* modify_record: change modifyTimestamp as well */
+static int rdn_name_modify_record(struct ldb_module *module, const struct ldb_message *msg)
+{
+	struct ldb_message *msg2;
+	struct ldb_message_element *attribute;
+	struct ldb_dn_component *rdn;
+	int ret, i;
+
+	ldb_debug(module->ldb, LDB_DEBUG_TRACE, "rdn_name_modify_record\n");
+
+	/* Perhaps someone above us knows better */
+	if ((attribute = rdn_name_find_attribute(msg, "name")) != NULL ) {
+		return ldb_next_add_record(module, msg);
+	}
+
+	msg2 = talloc(module, struct ldb_message);
+	if (!msg2) {
+		return -1;
+	}
+
+	msg2->dn = msg->dn;
+	msg2->num_elements = msg->num_elements;
+	msg2->private_data = msg->private_data;
+	msg2->elements = talloc_array(msg2, struct ldb_message_element, msg2->num_elements);
+	for (i = 0; i < msg2->num_elements; i++) {
+		msg2->elements[i] = msg->elements[i];
+	}
+	
+	rdn = get_rdn(msg2, msg2->dn);
+	if (!rdn) {
+		return -1;
+	}
+	
+	if (ldb_msg_add_value(module->ldb, msg2, "name", &rdn->value) != 0) {
+		return -1;
+	}
+
+	attribute = rdn_name_find_attribute(msg2, "name");
+	if (!attribute) {
+		return -1;
+	}
+
+	attribute->flags = LDB_FLAG_MOD_REPLACE;
+
+	ret = ldb_next_modify_record(module, msg2);
+	talloc_free(msg2);
+
+	return ret;
+}
+
+static int rdn_name_delete_record(struct ldb_module *module, const char *dn)
+{
+	ldb_debug(module->ldb, LDB_DEBUG_TRACE, "rdn_name_delete_record\n");
+	return ldb_next_delete_record(module, dn);
+}
+
+static int rdn_name_rename_record(struct ldb_module *module, const char *olddn, const char *newdn)
+{
+	ldb_debug(module->ldb, LDB_DEBUG_TRACE, "rdn_name_rename_record\n");
+	return ldb_next_rename_record(module, olddn, newdn);
+}
+
+static int rdn_name_lock(struct ldb_module *module, const char *lockname)
+{
+	ldb_debug(module->ldb, LDB_DEBUG_TRACE, "rdn_name_lock\n");
+	return ldb_next_named_lock(module, lockname);
+}
+
+static int rdn_name_unlock(struct ldb_module *module, const char *lockname)
+{
+	ldb_debug(module->ldb, LDB_DEBUG_TRACE, "rdn_name_unlock\n");
+	return ldb_next_named_unlock(module, lockname);
+}
+
+/* return extended error information */
+static const char *rdn_name_errstring(struct ldb_module *module)
+{
+	struct private_data *data = (struct private_data *)module->private_data;
+
+	ldb_debug(module->ldb, LDB_DEBUG_TRACE, "rdn_name_errstring\n");
+	if (data->error_string) {
+		const char *error;
+
+		error = data->error_string;
+		data->error_string = NULL;
+		return error;
+	}
+
+	return ldb_next_errstring(module);
+}
+
+static int rdn_name_destructor(void *module_ctx)
+{
+	/* struct ldb_module *ctx = module_ctx; */
+	/* put your clean-up functions here */
+	return 0;
+}
+
+static const struct ldb_module_ops rdn_name_ops = {
+	.name          = "rdn_name",
+	.search        = rdn_name_search,
+	.search_bytree = rdn_name_search_bytree,
+	.add_record    = rdn_name_add_record,
+	.modify_record = rdn_name_modify_record,
+	.delete_record = rdn_name_delete_record,
+	.rename_record = rdn_name_rename_record,
+	.named_lock    = rdn_name_lock,
+	.named_unlock  = rdn_name_unlock,
+	.errstring     = rdn_name_errstring
+};
+
+
+/* the init function */
+#ifdef HAVE_DLOPEN_DISABLED
+ struct ldb_module *init_module(struct ldb_context *ldb, const char *options[])
+#else
+struct ldb_module *rdn_name_module_init(struct ldb_context *ldb, const char *options[])
+#endif
+{
+	struct ldb_module *ctx;
+	struct private_data *data;
+
+	ctx = talloc(ldb, struct ldb_module);
+	if (!ctx)
+		return NULL;
+
+	data = talloc(ctx, struct private_data);
+	if (!data) {
+		talloc_free(ctx);
+		return NULL;
+	}
+
+	data->error_string = NULL;
+	ctx->private_data = data;
+	ctx->ldb = ldb;
+	ctx->prev = ctx->next = NULL;
+	ctx->ops = &rdn_name_ops;
+
+	talloc_set_destructor (ctx, rdn_name_destructor);
+
+	return ctx;
+}
diff --git a/source4/lib/ldb/modules/timestamps.c b/source4/lib/ldb/modules/timestamps.c
index c1db85a284..b067d8e8d6 100644
--- a/source4/lib/ldb/modules/timestamps.c
+++ b/source4/lib/ldb/modules/timestamps.c
@@ -60,8 +60,8 @@ static int timestamps_search_bytree(struct ldb_module *module, const char *base,
 static int add_time_element(struct ldb_module *module, struct ldb_message *msg, 
 			    const char *attr_name, const char *time_string, unsigned int flags)
 {
-	struct ldb_val *values;
-	char *name, *timestr;
+	struct ldb_message_element *attribute = NULL;
+
 	int i;
 
 	for (i = 0; i < msg->num_elements; i++) {
@@ -70,23 +70,22 @@ static int add_time_element(struct ldb_module *module, struct ldb_message *msg,
 		}
 	}
 
-	msg->elements = talloc_realloc(msg, msg->elements, 
-					 struct ldb_message_element, msg->num_elements + 1);
-	name = talloc_strdup(msg->elements, attr_name);
-	timestr = talloc_strdup(msg->elements, time_string);
-	values = talloc(msg->elements, struct ldb_val);
-	if (!msg->elements || !name || !timestr || !values) {
+	if (ldb_msg_add_string(module->ldb, msg, attr_name, time_string) != 0) {
 		return -1;
 	}
 
-	msg->elements[msg->num_elements].name = name;
-	msg->elements[msg->num_elements].flags = flags;
-	msg->elements[msg->num_elements].num_values = 1;
-	msg->elements[msg->num_elements].values = values;
-	msg->elements[msg->num_elements].values[0].data = timestr;
-	msg->elements[msg->num_elements].values[0].length = strlen(timestr);
+	for (i = 0; i < msg->num_elements; i++) {
+		if (ldb_attr_cmp(attr_name, msg->elements[i].name) == 0) {
+			attribute = &msg->elements[i];
+			break;
+		}
+	}
 
-	msg->num_elements += 1;
+	if (!attribute) {
+		return -1;
+	}
+
+	attribute->flags = flags;
 
 	return 0;
 }
@@ -196,12 +195,8 @@ static int timestamps_modify_record(struct ldb_module *module, const struct ldb_
 	add_time_element(module, msg2, "modifyTimestamp", timestr, LDB_FLAG_MOD_REPLACE);
 	add_time_element(module, msg2, "whenChanged", timestr, LDB_FLAG_MOD_REPLACE);
 
-	if (msg2) {
-		ret = ldb_next_modify_record(module, msg2);
-		talloc_free(msg2);
-	} else {
-		ret = ldb_next_modify_record(module, msg);
-	}
+	ret = ldb_next_modify_record(module, msg2);
+	talloc_free(msg2);
 
 	return ret;
 }