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-rw-r--r--source4/lib/samba3/idmap.c93
1 files changed, 93 insertions, 0 deletions
diff --git a/source4/lib/samba3/idmap.c b/source4/lib/samba3/idmap.c
new file mode 100644
index 0000000000..c541c5bc92
--- /dev/null
+++ b/source4/lib/samba3/idmap.c
@@ -0,0 +1,93 @@
+/*
+ Unix SMB/CIFS implementation.
+
+ idmap TDB backend
+
+ Copyright (C) Tim Potter 2000
+ Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2003
+ Copyright (C) Simo Sorce 2003
+ Copyright (C) Jelmer Vernooij 2005
+
+ 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 "lib/tdb/include/tdbutil.h"
+#include "lib/samba3/sam.h"
+#include "system/filesys.h"
+
+/* High water mark keys */
+#define HWM_GROUP "GROUP HWM"
+#define HWM_USER "USER HWM"
+
+/* idmap version determines auto-conversion */
+#define IDMAP_VERSION 2
+
+/*****************************************************************************
+ Initialise idmap database.
+*****************************************************************************/
+
+NTSTATUS samba3_read_idmap( const char *fn, TALLOC_CTX *ctx, struct samba3_idmap *idmap )
+{
+ int32_t version;
+ TDB_CONTEXT *tdb;
+ TDB_DATA key, val;
+
+ /* Open idmap repository */
+ if (!(tdb = tdb_open(fn, 0, TDB_DEFAULT, O_RDONLY, 0644))) {
+ DEBUG(0, ("idmap_init: Unable to open idmap database\n"));
+ return NT_STATUS_UNSUCCESSFUL;
+ }
+
+ /* check against earlier versions */
+ version = tdb_fetch_int32(tdb, "IDMAP_VERSION");
+ if (version != IDMAP_VERSION) {
+ DEBUG(0, ("idmap_init: Unable to open idmap database, it's in an old format!\n"));
+ return NT_STATUS_INTERNAL_DB_ERROR;
+ }
+
+ idmap->mapping_count = 0;
+ idmap->mappings = NULL;
+ idmap->user_hwm = tdb_fetch_int32(tdb, HWM_USER);
+ idmap->group_hwm = tdb_fetch_int32(tdb, HWM_GROUP);
+
+ for (key = tdb_firstkey(tdb); key.dptr; key = tdb_nextkey(tdb, key))
+ {
+ struct samba3_idmap_mapping map;
+
+ if (strncmp(key.dptr, "GID ", 4) == 0) {
+ map.type = IDMAP_GROUP;
+ map.unix_id = atoi(key.dptr+4);
+ val = tdb_fetch(tdb, key);
+ map.sid = dom_sid_parse_talloc(ctx, val.dptr);
+ } else if (strncmp(key.dptr, "UID ", 4) == 0) {
+ map.type = IDMAP_USER;
+ map.unix_id = atoi(key.dptr+4);
+ val = tdb_fetch(tdb, key);
+ map.sid = dom_sid_parse_talloc(ctx, val.dptr);
+ } else {
+ continue;
+ }
+
+ idmap->mappings = talloc_realloc(ctx, idmap->mappings, struct samba3_idmap_mapping, idmap->mapping_count+1);
+
+ idmap->mappings[idmap->mapping_count] = map;
+ idmap->mapping_count++;
+ }
+
+ tdb_close(tdb);
+
+ return NT_STATUS_OK;
+}