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authorSimo Sorce <idra@samba.org>2005-02-27 11:31:38 +0000
committerGerald (Jerry) Carter <jerry@samba.org>2007-10-10 13:10:55 -0500
commitd2dc86994e7075490f95faa1cc85008feb38f04a (patch)
tree42805671de41675f796b6463e58f244aa2179c27 /source4/dsdb/samdb/ldb_modules
parente8eee542d36297d442f331632fa23809cb8b2e1d (diff)
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r5584: add new experimental ldb module
(This used to be commit e77a070c841c7a1b73dfcea2d43651618557d0f4)
Diffstat (limited to 'source4/dsdb/samdb/ldb_modules')
-rw-r--r--source4/dsdb/samdb/ldb_modules/samldb.c512
1 files changed, 512 insertions, 0 deletions
diff --git a/source4/dsdb/samdb/ldb_modules/samldb.c b/source4/dsdb/samdb/ldb_modules/samldb.c
new file mode 100644
index 0000000000..6b8546e2b8
--- /dev/null
+++ b/source4/dsdb/samdb/ldb_modules/samldb.c
@@ -0,0 +1,512 @@
+/*
+ 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 samldb module
+ *
+ * Description: add object timestamping functionality
+ *
+ * Author: Simo Sorce
+ */
+
+#include "includes.h"
+#include "lib/ldb/include/ldb.h"
+#include "lib/ldb/include/ldb_private.h"
+#include <time.h>
+
+#define SAM_ACCOUNT_NAME_BASE "$000000-000000000000"
+
+struct private_data {
+ const char *error_string;
+};
+
+static int samldb_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, "samldb_search\n");
+ return ldb_next_search(module, base, scope, expression, attrs, res);
+}
+
+static int samldb_search_free(struct ldb_module *module, struct ldb_message **res)
+{
+ldb_debug(module->ldb, LDB_DEBUG_TRACE, "samldb_search_free\n");
+ return ldb_next_search_free(module, res);
+}
+
+static char *samldb_generate_samAccountName(const void *mem_ctx) {
+ char *name;
+
+ name = talloc_strdup(mem_ctx, SAM_ACCOUNT_NAME_BASE);
+ /* TODO: randomize name */
+
+ return name;
+}
+
+static BOOL samldb_get_rdn_and_basedn(const void *mem_ctx, const char *dn, char **rdn, char **basedn)
+{
+ char *p;
+
+ p = strchr(dn, ',');
+ if ( ! p ) {
+ return False;
+ }
+ /* clear separator */
+ *p = '\0';
+
+ *rdn = talloc_strdup(mem_ctx, dn);
+
+ /* put back separator */
+ *p = ',';
+
+ if ( ! *rdn) {
+ return False;
+ }
+
+ *basedn = talloc_strdup(mem_ctx, p + 1);
+
+ if ( ! *basedn) {
+ talloc_free(*rdn);
+ *rdn = NULL;
+ return False;
+ }
+
+ return True;
+}
+
+/* if value is not null also check for attribute to have exactly that value */
+static struct ldb_message_element *samldb_find_attribute(const struct ldb_message *msg, const char *name, const char *value)
+{
+ int i, j;
+
+ for (i = 0; i < msg->num_elements; i++) {
+ if (ldb_attr_cmp(name, msg->elements[i].name) == 0) {
+ if (!value) {
+ return &msg->elements[i];
+ }
+ for (j = 0; j < msg->elements[i].num_values; j++) {
+ if (strcasecmp(value, msg->elements[i].values[j].data) == 0) {
+ return &msg->elements[i];
+ }
+ }
+ }
+ }
+
+ return NULL;
+}
+
+static BOOL samldb_add_attribute(struct ldb_message *msg, const char *name, const char *value)
+{
+ struct ldb_message_element *attr;
+ int i;
+
+ attr = samldb_find_attribute(msg, name, NULL);
+ if ( ! attr) {
+ msg->num_elements++;
+ msg->elements = talloc_realloc(msg, msg->elements, struct ldb_message_element, msg->num_elements);
+ if ( ! msg->elements ) {
+ return False;
+ }
+ attr = &msg->elements[msg->num_elements - 1];
+
+ attr->name = talloc_strdup(msg, name);
+ if ( ! attr->name ) {
+ return False;
+ }
+ attr->flags = 0;
+ attr->num_values = 0;
+ attr->values = NULL;
+ }
+
+ i = attr->num_values;
+ attr->num_values++;
+ attr->values = talloc_realloc(msg, attr->values, struct ldb_val, attr->num_values);
+ if ( ! attr->values ){
+ return False;
+ }
+
+ attr->values[i].data = talloc_strdup(msg, value);
+ attr->values[i].length = strlen(value);
+
+ if ( ! attr->values[i].data) {
+ return False;
+ }
+
+ return True;
+}
+
+static BOOL samldb_find_or_add_attribute(struct ldb_message *msg, const char *name, const char *value, const char *set_value)
+{
+ if (samldb_find_attribute(msg, name, value) == NULL) {
+ if ( ! samldb_add_attribute(msg, name, set_value)) {
+ return False;
+ }
+ }
+ return True;
+}
+
+static struct ldb_message *samldb_manage_group_object(struct ldb_module *module, const struct ldb_message *msg)
+{
+ struct ldb_message *msg2;
+ struct ldb_message_element *attribute;
+ char *rdn, *basedn;
+ int i;
+
+ if (samldb_find_attribute(msg, "objectclass", "group") == NULL) {
+ return NULL;
+ }
+
+ msg2 = talloc(module, struct ldb_message);
+ if (!msg2) {
+ ldb_debug(module->ldb, LDB_DEBUG_FATAL, "samldb_manage_group_object: talloc failed!\n");
+ return NULL;
+ }
+
+ /* build the new msg */
+ 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);
+ if (! msg2->elements) {
+ ldb_debug(module->ldb, LDB_DEBUG_FATAL, "samldb_manage_group_object: talloc_array failed!\n");
+ talloc_free(msg2);
+ return NULL;
+ }
+ for (i = 0; i < msg2->num_elements; i++) {
+ msg2->elements[i] = msg->elements[i];
+ }
+
+ if ( ! samldb_get_rdn_and_basedn(msg2, msg2->dn, &rdn, &basedn)) {
+ talloc_free(msg2);
+ return NULL;
+ }
+ if (strncasecmp(rdn, "cn", 2) != 0) {
+ ldb_debug(module->ldb, LDB_DEBUG_FATAL, "samldb_manage_group_object: Bad RDN (%s) for group!\n", rdn);
+ talloc_free(msg2);
+ return NULL;
+ }
+
+ if (! samldb_find_or_add_attribute(msg2, "objectclass", "top", "top")) {
+ talloc_free(msg2);
+ return NULL;
+ }
+
+ if ((attribute = samldb_find_attribute(msg2, "cn", NULL)) != NULL) {
+ if (strcasecmp(rdn, attribute->values[0].data) != 0) {
+ ldb_debug(module->ldb, LDB_DEBUG_FATAL, "samldb_manage_group_object: Bad Attribute Syntax for CN\n");
+ talloc_free(msg2);
+ return NULL;
+ }
+ } else { /* FIXME: remove this if ldb supports natively aliasing between the rdn and the "cn" attribute */
+ if ( ! samldb_add_attribute(msg2, "cn", &rdn[3])) {
+ talloc_free(msg2);
+ return NULL;
+ }
+ }
+
+ if ((attribute = samldb_find_attribute(msg2, "name", NULL)) != NULL) {
+ if (strcasecmp(rdn, attribute->values[0].data) != 0) {
+ ldb_debug(module->ldb, LDB_DEBUG_FATAL, "samldb_manage_group_object: Bad Attribute Syntax for name\n");
+ talloc_free(msg2);
+ return NULL;
+ }
+ } else { /* FIXME: remove this if ldb supports natively aliasing between the rdn and the "name" attribute */
+ if ( ! samldb_add_attribute(msg2, "name", &rdn[3])) {
+ talloc_free(msg2);
+ return NULL;
+ }
+ }
+
+ if ( ! samldb_find_or_add_attribute(msg2, "instanceType", NULL, "4")) {
+ return NULL;
+ }
+
+ if ( ! samldb_find_or_add_attribute(msg2, "sAMAccountName", NULL, samldb_generate_samAccountName(msg2))) {
+ return NULL;
+ }
+
+ if ( ! samldb_find_or_add_attribute(msg2, "sAMAccountType", NULL, "268435456")) {
+ return NULL;
+ }
+
+ if ( ! samldb_find_or_add_attribute(msg2, "groupType", NULL, "-2147483646")) {
+ return NULL;
+ }
+
+ if ( ! samldb_find_or_add_attribute(msg2, "objectCategory", NULL, "foo")) { /* keep the schema module happy :) */
+ return NULL;
+ }
+
+ if ( ! samldb_find_or_add_attribute(msg2, "objectSid", NULL, "foo")) { /* keep the schema module happy :) */
+ return NULL;
+ }
+
+ /* TODO: objectGUID, objectSid, objectCategory */
+ /* need a way to lock a new Sid */
+
+ return msg2;
+}
+
+static struct ldb_message *samldb_manage_user_object(struct ldb_module *module, const struct ldb_message *msg)
+{
+ struct ldb_message *msg2;
+ struct ldb_message_element *attribute;
+ char *rdn, *basedn;
+ int i;
+
+ if (samldb_find_attribute(msg, "objectclass", "user") == NULL) {
+ return NULL;
+ }
+
+ msg2 = talloc(module, struct ldb_message);
+ if (!msg2) {
+ ldb_debug(module->ldb, LDB_DEBUG_FATAL, "samldb_manage_user_object: talloc failed!\n");
+ return NULL;
+ }
+
+ /* build the new msg */
+ 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);
+ if (! msg2->elements) {
+ ldb_debug(module->ldb, LDB_DEBUG_FATAL, "samldb_manage_user_object: talloc_array failed!\n");
+ talloc_free(msg2);
+ return NULL;
+ }
+ for (i = 0; i < msg2->num_elements; i++) {
+ msg2->elements[i] = msg->elements[i];
+ }
+
+ if ( ! samldb_get_rdn_and_basedn(msg2, msg2->dn, &rdn, &basedn)) {
+ talloc_free(msg2);
+ return NULL;
+ }
+ if (strncasecmp(rdn, "cn", 2) != 0) {
+ ldb_debug(module->ldb, LDB_DEBUG_FATAL, "samldb_manage_group_object: Bad RDN (%s) for group!\n", rdn);
+ talloc_free(msg2);
+ return NULL;
+ }
+
+
+ if ( ! samldb_find_or_add_attribute(msg2, "objectclass", "top", "top")) {
+ talloc_free(msg2);
+ return NULL;
+ }
+
+ if ( ! samldb_find_or_add_attribute(msg2, "objectclass", "person", "person")) {
+ talloc_free(msg2);
+ return NULL;
+ }
+
+ if ( ! samldb_find_or_add_attribute(msg2, "objectclass", "organizationalPerson", "organizationalPerson")) {
+ talloc_free(msg2);
+ return NULL;
+ }
+
+ if ((attribute = samldb_find_attribute(msg2, "cn", NULL)) != NULL) {
+ if (strcasecmp(rdn, attribute->values[0].data) != 0) {
+ ldb_debug(module->ldb, LDB_DEBUG_FATAL, "samldb_manage_user_object: Bad Attribute Syntax for CN\n");
+ talloc_free(msg2);
+ return NULL;
+ }
+ } else { /* FIXME: remove this if ldb supports natively aliasing between the rdn and the "cn" attribute */
+ if ( ! samldb_add_attribute(msg2, "cn", &rdn[3])) {
+ talloc_free(msg2);
+ return NULL;
+ }
+ }
+
+ if ((attribute = samldb_find_attribute(msg2, "name", NULL)) != NULL) {
+ if (strcasecmp(rdn, attribute->values[0].data) != 0) {
+ ldb_debug(module->ldb, LDB_DEBUG_FATAL, "samldb_manage_user_object: Bad Attribute Syntax for name\n");
+ talloc_free(msg2);
+ return NULL;
+ }
+ } else { /* FIXME: remove this if ldb supports natively aliasing between the rdn and the "name" attribute */
+ if ( ! samldb_add_attribute(msg2, "name", &rdn[3])) {
+ talloc_free(msg2);
+ return NULL;
+ }
+ }
+
+ if ( ! samldb_find_or_add_attribute(msg2, "instanceType", NULL, "4")) {
+ talloc_free(msg2);
+ return NULL;
+ }
+
+ if ( ! samldb_find_or_add_attribute(msg2, "sAMAccountName", NULL, samldb_generate_samAccountName(msg2))) {
+ talloc_free(msg2);
+ return NULL;
+ }
+
+ if ( ! samldb_find_or_add_attribute(msg2, "sAMAccountType", NULL, "805306368")) {
+ talloc_free(msg2);
+ return NULL;
+ }
+
+ if ( ! samldb_find_or_add_attribute(msg2, "objectCategory", NULL, "foo")) { /* keep the schema module happy :) */
+ return NULL;
+ }
+
+ if ( ! samldb_find_or_add_attribute(msg2, "objectSid", NULL, "foo")) { /* keep the schema module happy :) */
+ return NULL;
+ }
+
+ /* TODO: objectGUID, objectSid, objectCategory, userAccountControl, badPwdCount, codePage, countryCode, badPasswordTime, lastLogoff, lastLogon, pwdLastSet, primaryGroupID, accountExpires, logonCount */
+
+ return msg2;
+}
+
+/* add_record */
+static int samldb_add_record(struct ldb_module *module, const struct ldb_message *msg)
+{
+ struct ldb_message *msg2 = NULL;
+ int ret;
+
+ ldb_debug(module->ldb, LDB_DEBUG_TRACE, "samldb_add_record\n");
+
+ if (msg->dn[0] == '@') { /* do not manipulate our control entries */
+ return ldb_next_add_record(module, msg);
+ }
+
+ /* is group? add all group relevant missing objects */
+ msg2 = samldb_manage_group_object(module, msg);
+
+ /* is user? add all user relevant missing objects */
+ if ( ! msg2 ) {
+ msg2 = samldb_manage_user_object(module, msg);
+ }
+
+ if (msg2) {
+ ret = ldb_next_add_record(module, msg2);
+ talloc_free(msg2);
+ } else {
+ ret = ldb_next_add_record(module, msg);
+ }
+
+ return ret;
+}
+
+/* modify_record: change modifyTimestamp as well */
+static int samldb_modify_record(struct ldb_module *module, const struct ldb_message *msg)
+{
+ ldb_debug(module->ldb, LDB_DEBUG_TRACE, "samldb_modify_record\n");
+ return ldb_next_modify_record(module, msg);
+}
+
+static int samldb_delete_record(struct ldb_module *module, const char *dn)
+{
+ ldb_debug(module->ldb, LDB_DEBUG_TRACE, "samldb_delete_record\n");
+ return ldb_next_delete_record(module, dn);
+}
+
+static int samldb_rename_record(struct ldb_module *module, const char *olddn, const char *newdn)
+{
+ ldb_debug(module->ldb, LDB_DEBUG_TRACE, "samldb_rename_record\n");
+ return ldb_next_rename_record(module, olddn, newdn);
+}
+
+static int samldb_lock(struct ldb_module *module, const char *lockname)
+{
+ ldb_debug(module->ldb, LDB_DEBUG_TRACE, "samldb_lock\n");
+ return ldb_next_named_lock(module, lockname);
+}
+
+static int samldb_unlock(struct ldb_module *module, const char *lockname)
+{
+ ldb_debug(module->ldb, LDB_DEBUG_TRACE, "samldb_unlock\n");
+ return ldb_next_named_unlock(module, lockname);
+}
+
+/* return extended error information */
+static const char *samldb_errstring(struct ldb_module *module)
+{
+ struct private_data *data = (struct private_data *)module->private_data;
+
+ ldb_debug(module->ldb, LDB_DEBUG_TRACE, "samldb_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 samldb_destructor(void *module_ctx)
+{
+ struct ldb_module *ctx = module_ctx;
+ /* put your clean-up functions here */
+ return 0;
+}
+
+static const struct ldb_module_ops samldb_ops = {
+ "samldb",
+ samldb_search,
+ samldb_search_free,
+ samldb_add_record,
+ samldb_modify_record,
+ samldb_delete_record,
+ samldb_rename_record,
+ samldb_lock,
+ samldb_unlock,
+ samldb_errstring
+};
+
+
+/* the init function */
+#ifdef HAVE_DLOPEN_DISABLED
+ struct ldb_module *init_module(struct ldb_context *ldb, const char *options[])
+#else
+struct ldb_module *samldb_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 = &samldb_ops;
+
+ talloc_set_destructor(ctx, samldb_destructor);
+
+ return ctx;
+}