s3:registry: move higher level function reg_open_path to new module reg_api_util

The reg_api.c code should just export functions that direclty relate to winreg
api calls.

1 files changed, 83 insertions, 0 deletions

diff --git a/source3/registry/reg_api_util.c b/source3/registry/reg_api_util.c
new file mode 100644
index 0000000000..243665606c
--- /dev/null
+++ b/source3/registry/reg_api_util.c
@@ -0,0 +1,83 @@
+/*
+ *  Unix SMB/CIFS implementation.
+ *  Virtual Windows Registry Layer
+ *  Copyright (C) Volker Lendecke 2006
+ *  Copyright (C) Michael Adam 2007-2010
+ *
+ *  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/>.
+ */
+
+/*
+ * Higher level utility functions on top of reg_api.c
+ */
+
+#include "includes.h"
+#include "registry.h"
+#include "reg_api_util.h"
+
+/**
+ * Utility function to open a complete registry path including the hive prefix.
+ */
+WERROR reg_open_path(TALLOC_CTX *mem_ctx, const char *orig_path,
+		     uint32 desired_access, const struct security_token *token,
+		     struct registry_key **pkey)
+{
+	struct registry_key *hive, *key;
+	char *path, *p;
+	WERROR err;
+
+	if (!(path = SMB_STRDUP(orig_path))) {
+		return WERR_NOMEM;
+	}
+
+	p = strchr(path, '\\');
+
+	if ((p == NULL) || (p[1] == '\0')) {
+		/*
+		 * No key behind the hive, just return the hive
+		 */
+
+		err = reg_openhive(mem_ctx, path, desired_access, token,
+				   &hive);
+		if (!W_ERROR_IS_OK(err)) {
+			SAFE_FREE(path);
+			return err;
+		}
+		SAFE_FREE(path);
+		*pkey = hive;
+		return WERR_OK;
+	}
+
+	*p = '\0';
+
+	err = reg_openhive(mem_ctx, path, KEY_ENUMERATE_SUB_KEYS, token,
+			   &hive);
+	if (!W_ERROR_IS_OK(err)) {
+		SAFE_FREE(path);
+		return err;
+	}
+
+	err = reg_openkey(mem_ctx, hive, p+1, desired_access, &key);
+
+	TALLOC_FREE(hive);
+	SAFE_FREE(path);
+
+	if (!W_ERROR_IS_OK(err)) {
+		return err;
+	}
+
+	*pkey = key;
+	return WERR_OK;
+}
+