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authorJelmer Vernooij <jelmer@samba.org>2005-08-22 11:37:20 +0000
committerGerald (Jerry) Carter <jerry@samba.org>2007-10-10 13:34:19 -0500
commit5b15e435d101f87a0833625f217643acae5a7a75 (patch)
treeb15a7c72ac39b1701f6cf3aca130f589e467e64f /source4/lib/samba3
parent535c6fa43644b576fb793418121c77e6f073ae5e (diff)
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r9472: Add read-only version of Samba3 registry database (doesn't compile yet)
(This used to be commit 77cbb6299847bab1272cc681f4b8f54a9fca1339)
Diffstat (limited to 'source4/lib/samba3')
-rw-r--r--source4/lib/samba3/registry.c172
1 files changed, 172 insertions, 0 deletions
diff --git a/source4/lib/samba3/registry.c b/source4/lib/samba3/registry.c
new file mode 100644
index 0000000000..22fa2b2636
--- /dev/null
+++ b/source4/lib/samba3/registry.c
@@ -0,0 +1,172 @@
+/*
+ * Unix SMB/CIFS implementation.
+ * Virtual Windows Registry Layer
+ * Copyright (C) Gerald Carter 2002-2005
+ * 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.
+ */
+
+/* Implementation of internal registry database functions. */
+
+#include "includes.h"
+
+#define VALUE_PREFIX "SAMBA_REGVAL"
+#define REGVER_V1 1 /* first db version with write support */
+
+/***********************************************************************
+ Open the registry database
+ ***********************************************************************/
+
+static TDB_CONTEXT *samba3_open_registry ( const char *fn )
+{
+ uint32_t vers_id;
+
+ /* placeholder tdb; reinit upon startup */
+
+ if ( !(tdb = tdb_open_log(lock_path("registry.tdb"), 0, TDB_DEFAULT, O_RDONLY, 0600)) )
+ {
+ return NULL;
+ }
+
+ vers_id = tdb_fetch_int32(tdb, "INFO/version");
+
+ if (vers_id > REGVER_V1)
+ return NULL;
+
+ return True;
+}
+
+/***********************************************************************
+ Retrieve an array of strings containing subkeys. Memory should be
+ released by the caller.
+ ***********************************************************************/
+
+int regdb_fetch_keys( TDB_CONTEXT *tdb, const char* key, REGSUBKEY_CTR *ctr )
+{
+ char *path;
+ uint32_t num_items;
+ TDB_DATA dbuf;
+ char *buf;
+ uint32_t buflen, len;
+ int i;
+ fstring subkeyname;
+
+ DEBUG(11,("regdb_fetch_keys: Enter key => [%s]\n", key ? key : "NULL"));
+
+ path = talloc_strdup(key);
+
+ /* convert to key format */
+ for ( i = 0; path[i]; i++) {
+ if ( path[i] == '\\' )
+ path[i] = '/';
+ }
+ strupper_m( path );
+
+ dbuf = tdb_fetch_bystring( tdb, path );
+
+ buf = dbuf.dptr;
+ buflen = dbuf.dsize;
+
+ if ( !buf ) {
+ DEBUG(5,("regdb_fetch_keys: tdb lookup failed to locate key [%s]\n", key));
+ return -1;
+ }
+
+ len = tdb_unpack( buf, buflen, "d", &num_items);
+
+ for (i=0; i<num_items; i++) {
+ len += tdb_unpack( buf+len, buflen-len, "f", subkeyname );
+ regsubkey_ctr_addkey( ctr, subkeyname );
+ }
+
+ SAFE_FREE( dbuf.dptr );
+
+ DEBUG(11,("regdb_fetch_keys: Exit [%d] items\n", num_items));
+
+ return num_items;
+}
+
+/****************************************************************************
+ Unpack a list of registry values frem the TDB
+ ***************************************************************************/
+
+static int regdb_unpack_values(REGVAL_CTR *values, char *buf, int buflen)
+{
+ int len = 0;
+ uint32_t type;
+ char *valuename;
+ uint32_t size;
+ uint8_t *data_p;
+ uint32_t num_values = 0;
+ int i;
+
+ /* loop and unpack the rest of the registry values */
+
+ len += tdb_unpack(buf+len, buflen-len, "d", &num_values);
+
+ for ( i=0; i<num_values; i++ ) {
+ /* unpack the next regval */
+
+ type = REG_NONE;
+ size = 0;
+ data_p = NULL;
+ len += tdb_unpack(buf+len, buflen-len, "fdB",
+ valuename,
+ &type,
+ &size,
+ &data_p);
+
+ /* add the new value. Paranoid protective code -- make sure data_p is valid */
+
+ if ( size && data_p ) {
+ regval_ctr_addvalue( values, valuename, type, (const char *)data_p, size );
+ SAFE_FREE(data_p); /* 'B' option to tdb_unpack does a malloc() */
+ }
+
+ DEBUG(8,("specific: [%s], len: %d\n", valuename, size));
+ }
+
+ return len;
+}
+
+/***********************************************************************
+ Retrieve an array of strings containing subkeys. Memory should be
+ released by the caller.
+ ***********************************************************************/
+
+int regdb_fetch_values( TDB_CONTEXT *tdb, const char* key, REGVAL_CTR *values )
+{
+ TDB_DATA data;
+ pstring keystr;
+
+ DEBUG(10,("regdb_fetch_values: Looking for value of key [%s] \n", key));
+
+ pstr_sprintf( keystr, "%s/%s", VALUE_PREFIX, key );
+ normalize_reg_path( keystr );
+
+ data = tdb_fetch_bystring( tdb, keystr );
+
+ if ( !data.dptr ) {
+ /* all keys have zero values by default */
+ return 0;
+ }
+
+ regdb_unpack_values( values, data.dptr, data.dsize );
+
+ SAFE_FREE( data.dptr );
+
+ return regval_ctr_numvals(values);
+}