r24667: Finally merge the registry improvements that Wilco Baan Hofman and I have

been working on for at least half a year now. Contains the following
improvements:

 * proper layering (finally!) for the registry library. Distinction is
   now made between 'real' backends (local, remote, wine, etc) and
   the low-level hive backends (regf, creg, ldb, ...) that are only used
   by the local registry backend
 * tests for all important hive and registry operations
 * re-enable RPC-WINREG tests (still needs more work though, as
							   some return values aren't checked yet)
 * write support for REGF files
 * dir backend now supports setting/reading values, creating keys
 * support for storing security descriptors
 * remove CREG backend as it was incomplete, didn't match the data model
   and wasn't used at all anyway
 * support for parsing ADM files as used by the policy editor (see lib/policy)
 * support for parsing PREG files (format used by .POL files)
 * new streaming interface for registry diffs (improves speed and memory usage
	for regdiff/regpatch significantly)

   ... and fixes a large number of bugs in the registry code
(This used to be commit 7a1eec6358bc863dfc671c542b7185d3e39d7b5a)

1 files changed, 145 insertions, 0 deletions

diff --git a/source4/lib/registry/hive.c b/source4/lib/registry/hive.c
new file mode 100644
index 0000000000..b2c826b93d
--- /dev/null
+++ b/source4/lib/registry/hive.c
@@ -0,0 +1,145 @@
+
+/* 
+   Unix SMB/CIFS implementation.
+   Registry hive interface
+   Copyright (C) Jelmer Vernooij					  2003-2007.
+   
+   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 2 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, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+#include "hive.h"
+#include "system/filesys.h"
+
+/** Open a registry file/host/etc */
+_PUBLIC_ WERROR reg_open_hive(TALLOC_CTX *parent_ctx, const char *location, 
+							  struct auth_session_info *session_info, 
+							  struct cli_credentials *credentials, 
+							  struct hive_key **root)
+{
+	int fd, num;
+	char peek[20];
+
+	/* Check for directory */
+	if (directory_exist(location)) {
+		return reg_open_directory(parent_ctx, location, root);
+	}
+
+	fd = open(location, O_RDWR);
+	if (fd == -1) {
+		return WERR_BADFILE;
+	}
+
+	num = read(fd, peek, 20);
+	if (num == -1) {
+		return WERR_BADFILE;
+	}
+
+	if (!strncmp(peek, "regf", 4)) {
+		close(fd);
+		return reg_open_regf_file(parent_ctx, location, root);
+	} else if (!strncmp(peek, "TDB file", 8)) {
+		close(fd);
+		return reg_open_ldb_file(parent_ctx, location, session_info, credentials, root);
+	}
+
+	return WERR_BADFILE;
+}
+
+_PUBLIC_ WERROR hive_key_get_info(TALLOC_CTX *mem_ctx, const struct hive_key *key,
+						 const char **classname, uint32_t *num_subkeys, 
+						 uint32_t *num_values,
+						 NTTIME *last_change_time)
+{
+	return key->ops->get_key_info(mem_ctx, key, classname, num_subkeys, 
+									num_values, last_change_time);
+}
+
+_PUBLIC_ WERROR hive_key_add_name(TALLOC_CTX *ctx, const struct hive_key *parent_key,
+						 const char *name, const char *classname, struct security_descriptor *desc,
+						 struct hive_key **key)
+{
+	SMB_ASSERT(strchr(name, '\\') == NULL);
+
+	return parent_key->ops->add_key(ctx, parent_key, name, classname, desc, key);
+}
+
+_PUBLIC_ WERROR hive_key_del(const struct hive_key *key, const char *name)
+{
+	return key->ops->del_key(key, name);
+}
+
+_PUBLIC_ WERROR hive_get_key_by_name(TALLOC_CTX *mem_ctx,
+							   const struct hive_key *key, const char *name, 
+							   struct hive_key **subkey)
+{
+	return key->ops->get_key_by_name(mem_ctx, key, name, subkey);
+}
+
+WERROR hive_enum_key(TALLOC_CTX *mem_ctx,
+					const struct hive_key *key, uint32_t idx, 
+					const char **name,
+					const char **classname,
+					NTTIME *last_mod_time)
+{
+	return key->ops->enum_key(mem_ctx, key, idx, name, classname, 
+							  last_mod_time);
+}
+
+WERROR hive_set_value(struct hive_key *key, const char *name, uint32_t type,
+					  const DATA_BLOB data)
+{
+	if (key->ops->set_value == NULL)
+		return WERR_NOT_SUPPORTED;
+
+	return key->ops->set_value(key, name, type, data);
+}
+
+WERROR hive_get_value (TALLOC_CTX *mem_ctx, 
+					   struct hive_key *key, const char *name, 
+					   uint32_t *type, DATA_BLOB *data)
+{
+	if (key->ops->get_value_by_name == NULL)
+		return WERR_NOT_SUPPORTED;
+
+	return key->ops->get_value_by_name(mem_ctx, key, name, type, data);
+}
+
+WERROR hive_get_value_by_index (TALLOC_CTX *mem_ctx, 
+					   struct hive_key *key, uint32_t idx, const char **name, 
+					   uint32_t *type, DATA_BLOB *data)
+{
+	if (key->ops->enum_value == NULL)
+		return WERR_NOT_SUPPORTED;
+
+	return key->ops->enum_value(mem_ctx, key, idx, name, type, data);
+}
+
+
+WERROR hive_del_value (struct hive_key *key, const char *name)
+{
+	if (key->ops->delete_value == NULL)
+		return WERR_NOT_SUPPORTED;
+
+	return key->ops->delete_value(key, name);
+}
+
+WERROR hive_key_flush(struct hive_key *key)
+{
+	if (key->ops->flush_key == NULL)
+		return WERR_OK;
+
+	return key->ops->flush_key(key);
+}