s4:provision Move secrets.ldb over to .c file module lists, like sam.ldb

2 files changed, 111 insertions, 0 deletions

diff --git a/source4/dsdb/samdb/ldb_modules/config.mk b/source4/dsdb/samdb/ldb_modules/config.mk
index 1849c69813..3bd38606ea 100644
--- a/source4/dsdb/samdb/ldb_modules/config.mk
+++ b/source4/dsdb/samdb/ldb_modules/config.mk
@@ -20,6 +20,17 @@ INIT_FUNCTION = LDB_MODULE(samba_dsdb)
 ldb_samba_dsdb_OBJ_FILES = $(dsdbsrcdir)/samdb/ldb_modules/samba_dsdb.o
 
 ################################################
+# Start MODULE ldb_samba_secrets
+[MODULE::ldb_samba_secrets]
+SUBSYSTEM = LIBLDB
+PRIVATE_DEPENDENCIES = SAMDB LIBTALLOC LIBEVENTS LIBNDR
+INIT_FUNCTION = LDB_MODULE(samba_secrets)
+# End MODULE ldb_samba_secrets
+################################################
+
+ldb_samba_secrets_OBJ_FILES = $(dsdbsrcdir)/samdb/ldb_modules/samba_secrets.o
+
+################################################
 # Start MODULE ldb_objectguid
 [MODULE::ldb_objectguid]
 SUBSYSTEM = LIBLDB
diff --git a/source4/dsdb/samdb/ldb_modules/samba_secrets.c b/source4/dsdb/samdb/ldb_modules/samba_secrets.c
new file mode 100644
index 0000000000..1045bb9102
--- /dev/null
+++ b/source4/dsdb/samdb/ldb_modules/samba_secrets.c
@@ -0,0 +1,100 @@
+/* 
+   Samba4 module loading module (for secrets)
+
+   Copyright (C) Andrew Bartlett <abartlet@samba.org> 2009
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program 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 General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/*
+ *  Name: ldb
+ *
+ *  Component: Samba4 module loading module (for secrets.ldb)
+ *
+ *  Description: Implement a single 'module' in the secrets.ldb database
+ *
+ *  This is to avoid forcing a reprovision of the ldb databases when we change the internal structure of the code
+ *
+ *  Author: Andrew Bartlett
+ */
+
+#include "includes.h"
+#include "lib/ldb/include/ldb.h"
+#include "lib/ldb/include/ldb_errors.h"
+#include "lib/ldb/include/ldb_module.h"
+#include "lib/ldb/include/ldb_private.h"
+
+#include "dsdb/samdb/ldb_modules/util.h"
+#include "dsdb/samdb/samdb.h"
+
+
+static int samba_secrets_init(struct ldb_module *module)
+{
+	struct ldb_context *ldb = ldb_module_get_ctx(module);
+	int ret, len, i;
+	TALLOC_CTX *tmp_ctx = talloc_new(module);
+	struct ldb_module *backend_module, *module_chain;
+	const char **reverse_module_list;
+	/*
+	  Add modules to the list to activate them by default
+	  beware often order is important
+	  
+	  The list is presented here as a set of declarations to show the
+	  stack visually
+	*/
+	static const char *modules_list[] = {"update_keytab",
+					     "objectguid",
+					     "rdn_name",
+					     NULL };
+
+	if (!tmp_ctx) {
+		ldb_oom(ldb);
+		return LDB_ERR_OPERATIONS_ERROR;
+	}
+
+	/* Now prepare the module chain.  Oddly, we must give it to ldb_load_modules_list in REVERSE */
+	for (len = 0; modules_list[len]; len++) { /* noop */};
+
+	reverse_module_list = talloc_array(tmp_ctx, const char *, len+1);
+	if (!reverse_module_list) {
+		talloc_free(tmp_ctx);
+		ldb_oom(ldb);
+		return LDB_ERR_OPERATIONS_ERROR;
+	}
+	for (i=0; i < len; i++) {
+		reverse_module_list[i] = modules_list[(len - 1) - i];
+	}
+	reverse_module_list[i] = NULL;
+
+	/* The backend (at least until the partitions module
+	 * reconfigures things) is the next module in the currently
+	 * loaded chain */
+	backend_module = module->next;
+	ret = ldb_load_modules_list(ldb, reverse_module_list, backend_module, &module_chain);
+	if (ret != LDB_SUCCESS) {
+		talloc_free(tmp_ctx);
+		return ret;
+	}
+
+	talloc_free(tmp_ctx);
+	/* Set this as the 'next' module, so that we effectivly append it to module chain */
+	module->next = module_chain;
+
+	return ldb_next_init(module);
+}
+
+const struct ldb_module_ops ldb_samba_secrets_module_ops = {
+	.name		   = "samba_secrets",
+	.init_context	   = samba_secrets_init,
+};