s3:winbindd add idmap_tdb_common file to store common code of TDB idmap backends

1 files changed, 137 insertions, 0 deletions

diff --git a/source3/winbindd/idmap_tdb_common.h b/source3/winbindd/idmap_tdb_common.h
new file mode 100644
index 0000000000..3343b58c21
--- /dev/null
+++ b/source3/winbindd/idmap_tdb_common.h
@@ -0,0 +1,137 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   common functions for TDB based idmapping backends
+
+   Copyright (C) Christian Ambach 2012
+
+   These functions were initially copied over from idmap_tdb.c and idmap_tdb2.c
+   which are:
+
+   Copyright (C) Tim Potter 2000
+   Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2003
+   Copyright (C) Jeremy Allison 2006
+   Copyright (C) Simo Sorce 2003-2006
+   Copyright (C) Michael Adam 2009-2010
+   Copyright (C) Andrew Tridgell 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.
+*/
+
+#ifndef _IDMAP_TDB_COMMON_H_
+#define _IDMAP_TDB_COMMON_H_
+
+#include "includes.h"
+#include "idmap.h"
+#include "dbwrap/dbwrap.h"
+
+/*
+ * this must be stored in idmap_domain->private_data
+ * when using idmap_tdb_common_get_new_id and the
+ * mapping functions idmap_tdb_common_unixid(s)_to_sids
+ *
+ * private_data can be used for backend specific
+ * configuration data (e.g. idmap script in idmap_tdb2)
+ *
+ */
+struct idmap_tdb_common_context {
+	struct db_context *db;
+	struct idmap_rw_ops *rw_ops;
+	/*
+	 * what is the maximum xid to be allocated
+	 * this is typically just dom->high_id
+	 */
+	uint32_t max_id;
+	const char *hwmkey_uid;
+	const char *hwmkey_gid;
+	/**
+	 * if not set, idmap_tdb_common_unixids_to_sid will be used by
+	 * idmap_tdb_common_unixids_to_sids
+	 */
+	NTSTATUS(*unixid_to_sid_fn) (struct idmap_domain *dom,
+				     struct id_map * map);
+	/*
+	 * if not set, idmap_tdb_common_sid_to_id will be used by
+	 * idmap_tdb_common_sids_to_unixids
+	 */
+	NTSTATUS(*sid_to_unixid_fn) (struct idmap_domain *dom,
+				     struct id_map * map);
+	void *private_data;
+};
+
+/**
+ * Allocate a new unix-ID.
+ * For now this is for the default idmap domain only.
+ * Should be extended later on.
+ */
+NTSTATUS idmap_tdb_common_get_new_id(struct idmap_domain *dom,
+				     struct unixid *id);
+
+/*
+ * store a mapping into the idmap database
+ *
+ * the entries that will be stored are
+ * UID map->xid.id => map->sid and map->sid => UID map->xid.id
+ * or
+ * GID map->xid.id => map->sid and map->sid => GID map->xid.id
+ *
+ * for example
+ * UID 12345 = S-1-5-21-297746067-1479432880-4056370663
+ * S-1-5-21-297746067-1479432880-4056370663 = UID 12345
+ *
+ */
+NTSTATUS idmap_tdb_common_set_mapping(struct idmap_domain *dom,
+				      const struct id_map *map);
+
+/*
+ * Create a new mapping for an unmapped SID, also allocating a new ID.
+ * This should be run inside a transaction.
+ *
+ * TODO:
+ *  Properly integrate this with multi domain idmap config:
+ *  Currently, the allocator is default-config only.
+ */
+NTSTATUS idmap_tdb_common_new_mapping(struct idmap_domain *dom,
+				      struct id_map *map);
+
+/*
+ * default multiple id to sid lookup function
+ *
+ * will call idmap_tdb_common_unixid_to_sid for each mapping
+ * if no other function to lookup unixid_to_sid was given in
+ * idmap_tdb_common_context
+ */
+NTSTATUS idmap_tdb_common_unixids_to_sids(struct idmap_domain *dom,
+					  struct id_map **ids);
+
+/*
+ * default single id to sid lookup function
+ *
+ * will read the entries written by idmap_tdb_common_set_mapping
+ */
+NTSTATUS idmap_tdb_common_unixid_to_sid(struct idmap_domain *dom,
+					struct id_map *map);
+
+/**********************************
+ Single sid to id lookup function.
+**********************************/
+
+NTSTATUS idmap_tdb_common_sid_to_unixid(struct idmap_domain *dom,
+					struct id_map *map);
+
+NTSTATUS idmap_tdb_common_sids_to_unixids(struct idmap_domain *dom,
+					  struct id_map **ids);
+
+#endif				/* _IDMAP_TDB_COMMON_H_ */