diff options
Diffstat (limited to 'source4/lib/samba3')
| -rw-r--r-- | source4/lib/samba3/registry.c | 172 |
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); +} |