--- /dev/null
+/*
+ * Unix SMB/CIFS implementation.
+ * Virtual Windows Registry Layer
+ * Copyright (C) Gerald Carter 2002-2005
+ *
+ * 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"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_RPC_SRV
+
+static TDB_CONTEXT *tdb_reg;
+static int tdb_refcount;
+
+#define VALUE_PREFIX "SAMBA_REGVAL"
+
+/* List the deepest path into the registry. All part components will be created.*/
+
+/* If you want to have a part of the path controlled by the tdb and part by
+ a virtual registry db (e.g. printing), then you have to list the deepest path.
+ For example,"HKLM/SOFTWARE/Microsoft/Windows NT/CurrentVersion/Print"
+ allows the reg_db backend to handle everything up to
+ "HKLM/SOFTWARE/Microsoft/Windows NT/CurrentVersion" and then we'll hook
+ the reg_printing backend onto the last component of the path (see
+ KEY_PRINTING_2K in include/rpc_reg.h) --jerry */
+
+static const char *builtin_registry_paths[] = {
+ KEY_PRINTING_2K,
+ KEY_PRINTING_PORTS,
+ KEY_PRINTING,
+ KEY_SHARES,
+ KEY_EVENTLOG,
+ "HKLM\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Perflib",
+ "HKLM\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Perflib\\009",
+ "HKLM\\SYSTEM\\CurrentControlSet\\Control\\Print\\Monitors",
+ "HKLM\\SYSTEM\\CurrentControlSet\\Control\\ProductOptions",
+ "HKLM\\SYSTEM\\CurrentControlSet\\Control\\Terminal Server\\DefaultUserConfiguration",
+ "HKLM\\SYSTEM\\CurrentControlSet\\Services\\TcpIp\\Parameters",
+ "HKLM\\SYSTEM\\CurrentControlSet\\Services\\Netlogon\\Parameters",
+ "HKU",
+ "HKCR",
+ "HKPD",
+ "HKPT",
+ NULL };
+
+struct builtin_regkey_value {
+ const char *path;
+ const char *valuename;
+ uint32 type;
+ union {
+ const char *string;
+ uint32 dw_value;
+ } data;
+};
+
+static struct builtin_regkey_value builtin_registry_values[] = {
+ { KEY_PRINTING_PORTS,
+ SAMBA_PRINTER_PORT_NAME, REG_SZ, { "" } },
+ { KEY_PRINTING_2K,
+ "DefaultSpoolDirectory", REG_SZ, { "C:\\Windows\\System32\\Spool\\Printers" } },
+ { KEY_EVENTLOG,
+ "DisplayName", REG_SZ, { "Event Log" } },
+ { KEY_EVENTLOG,
+ "ErrorControl", REG_DWORD, { (char*)0x00000001 } },
+ { NULL, NULL, 0, { NULL } }
+};
+
+#define REGVER_V1 1 /* first db version with write support */
+
+/***********************************************************************
+ Open the registry data in the tdb
+ ***********************************************************************/
+
+static BOOL init_registry_data( void )
+{
+ pstring path, base, remaining;
+ fstring keyname, subkeyname;
+ REGSUBKEY_CTR *subkeys;
+ REGVAL_CTR *values;
+ int i;
+ const char *p, *p2;
+ UNISTR2 data;
+
+ /* loop over all of the predefined paths and add each component */
+
+ for ( i=0; builtin_registry_paths[i] != NULL; i++ ) {
+
+ DEBUG(6,("init_registry_data: Adding [%s]\n", builtin_registry_paths[i]));
+
+ pstrcpy( path, builtin_registry_paths[i] );
+ pstrcpy( base, "" );
+ p = path;
+
+ while ( next_token(&p, keyname, "\\", sizeof(keyname)) ) {
+
+ /* build up the registry path from the components */
+
+ if ( *base )
+ pstrcat( base, "\\" );
+ pstrcat( base, keyname );
+
+ /* get the immediate subkeyname (if we have one ) */
+
+ *subkeyname = '\0';
+ if ( *p ) {
+ pstrcpy( remaining, p );
+ p2 = remaining;
+
+ if ( !next_token(&p2, subkeyname, "\\", sizeof(subkeyname)) )
+ fstrcpy( subkeyname, p2 );
+ }
+
+ DEBUG(10,("init_registry_data: Storing key [%s] with subkey [%s]\n",
+ base, *subkeyname ? subkeyname : "NULL"));
+
+ /* we don't really care if the lookup succeeds or not since
+ we are about to update the record. We just want any
+ subkeys already present */
+
+ if ( !(subkeys = TALLOC_ZERO_P( NULL, REGSUBKEY_CTR )) ) {
+ DEBUG(0,("talloc() failure!\n"));
+ return False;
+ }
+
+ regdb_fetch_keys( base, subkeys );
+ if ( *subkeyname )
+ regsubkey_ctr_addkey( subkeys, subkeyname );
+ if ( !regdb_store_keys( base, subkeys ))
+ return False;
+
+ TALLOC_FREE( subkeys );
+ }
+ }
+
+ /* loop over all of the predefined values and add each component */
+
+ for ( i=0; builtin_registry_values[i].path != NULL; i++ ) {
+ if ( !(values = TALLOC_ZERO_P( NULL, REGVAL_CTR )) ) {
+ DEBUG(0,("talloc() failure!\n"));
+ return False;
+ }
+
+ regdb_fetch_values( builtin_registry_values[i].path, values );
+
+ /* preserve existing values across restarts. Only add new ones */
+
+ if ( !regval_ctr_key_exists( values, builtin_registry_values[i].valuename ) )
+ {
+ switch( builtin_registry_values[i].type ) {
+ case REG_DWORD:
+ regval_ctr_addvalue( values,
+ builtin_registry_values[i].valuename,
+ REG_DWORD,
+ (char*)&builtin_registry_values[i].data.dw_value,
+ sizeof(uint32) );
+ break;
+
+ case REG_SZ:
+ init_unistr2( &data, builtin_registry_values[i].data.string, UNI_STR_TERMINATE);
+ regval_ctr_addvalue( values,
+ builtin_registry_values[i].valuename,
+ REG_SZ,
+ (char*)data.buffer,
+ data.uni_str_len*sizeof(uint16) );
+ break;
+
+ default:
+ DEBUG(0,("init_registry_data: invalid value type in builtin_registry_values [%d]\n",
+ builtin_registry_values[i].type));
+ }
+ regdb_store_values( builtin_registry_values[i].path, values );
+ }
+
+ TALLOC_FREE( values );
+ }
+
+ return True;
+}
+
+/***********************************************************************
+ Open the registry database
+ ***********************************************************************/
+
+BOOL regdb_init( void )
+{
+ const char *vstring = "INFO/version";
+ uint32 vers_id;
+
+ if ( tdb_reg )
+ return True;
+
+ if ( !(tdb_reg = tdb_open_log(lock_path("registry.tdb"), 0, TDB_DEFAULT, O_RDWR, 0600)) )
+ {
+ tdb_reg = tdb_open_log(lock_path("registry.tdb"), 0, TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
+ if ( !tdb_reg ) {
+ DEBUG(0,("regdb_init: Failed to open registry %s (%s)\n",
+ lock_path("registry.tdb"), strerror(errno) ));
+ return False;
+ }
+
+ DEBUG(10,("regdb_init: Successfully created registry tdb\n"));
+ }
+
+ tdb_refcount = 1;
+
+
+ vers_id = tdb_fetch_int32(tdb_reg, vstring);
+
+ if ( vers_id != REGVER_V1 ) {
+ /* any upgrade code here if needed */
+ }
+
+ /* always setup the necessary keys and values */
+
+ if ( !init_registry_data() ) {
+ DEBUG(0,("init_registry: Failed to initiailize data in registry!\n"));
+ return False;
+ }
+
+ return True;
+}
+
+/***********************************************************************
+ Open the registry. Must already have been initialized by regdb_init()
+ ***********************************************************************/
+
+WERROR regdb_open( void )
+{
+ WERROR result = WERR_OK;
+
+ if ( tdb_reg ) {
+ DEBUG(10,("regdb_open: incrementing refcount (%d)\n", tdb_refcount));
+ tdb_refcount++;
+ return WERR_OK;
+ }
+
+ become_root();
+
+ tdb_reg = tdb_open_log(lock_path("registry.tdb"), 0, TDB_DEFAULT, O_RDWR, 0600);
+ if ( !tdb_reg ) {
+ result = ntstatus_to_werror( map_nt_error_from_unix( errno ) );
+ DEBUG(0,("regdb_open: Failed to open %s! (%s)\n",
+ lock_path("registry.tdb"), strerror(errno) ));
+ }
+
+ unbecome_root();
+
+ tdb_refcount = 1;
+ DEBUG(10,("regdb_open: refcount reset (%d)\n", tdb_refcount));
+
+ return result;
+}
+
+/***********************************************************************
+ ***********************************************************************/
+
+int regdb_close( void )
+{
+ int ret;
+
+ tdb_refcount--;
+
+ DEBUG(10,("regdb_close: decrementing refcount (%d)\n", tdb_refcount));
+
+ if ( tdb_refcount > 0 )
+ return 0;
+
+ SMB_ASSERT( tdb_refcount >= 0 );
+
+ ret = tdb_close( tdb_reg );
+ tdb_reg = NULL;
+
+ return ret;
+}
+
+/***********************************************************************
+ Add subkey strings to the registry tdb under a defined key
+ fmt is the same format as tdb_pack except this function only supports
+ fstrings
+ ***********************************************************************/
+
+static BOOL regdb_store_keys_internal( const char *key, REGSUBKEY_CTR *ctr )
+{
+ TDB_DATA kbuf, dbuf;
+ char *buffer, *tmpbuf;
+ int i = 0;
+ uint32 len, buflen;
+ BOOL ret = True;
+ uint32 num_subkeys = regsubkey_ctr_numkeys( ctr );
+ pstring keyname;
+
+ if ( !key )
+ return False;
+
+ pstrcpy( keyname, key );
+ normalize_reg_path( keyname );
+
+ /* allocate some initial memory */
+
+ buffer = SMB_MALLOC(sizeof(pstring));
+ buflen = sizeof(pstring);
+ len = 0;
+
+ /* store the number of subkeys */
+
+ len += tdb_pack(buffer+len, buflen-len, "d", num_subkeys );
+
+ /* pack all the strings */
+
+ for (i=0; i<num_subkeys; i++) {
+ len += tdb_pack( buffer+len, buflen-len, "f", regsubkey_ctr_specific_key(ctr, i) );
+ if ( len > buflen ) {
+ /* allocate some extra space */
+ if ((tmpbuf = SMB_REALLOC( buffer, len*2 )) == NULL) {
+ DEBUG(0,("regdb_store_keys: Failed to realloc memory of size [%d]\n", len*2));
+ ret = False;
+ goto done;
+ }
+ buffer = tmpbuf;
+ buflen = len*2;
+
+ len = tdb_pack( buffer+len, buflen-len, "f", regsubkey_ctr_specific_key(ctr, i) );
+ }
+ }
+
+ /* finally write out the data */
+
+ kbuf.dptr = keyname;
+ kbuf.dsize = strlen(keyname)+1;
+ dbuf.dptr = buffer;
+ dbuf.dsize = len;
+ if ( tdb_store( tdb_reg, kbuf, dbuf, TDB_REPLACE ) == -1) {
+ ret = False;
+ goto done;
+ }
+
+done:
+ SAFE_FREE( buffer );
+
+ return ret;
+}
+
+/***********************************************************************
+ Store the new subkey record and create any child key records that
+ do not currently exist
+ ***********************************************************************/
+
+BOOL regdb_store_keys( const char *key, REGSUBKEY_CTR *ctr )
+{
+ int num_subkeys, i;
+ pstring path;
+ REGSUBKEY_CTR *subkeys, *old_subkeys;
+ char *oldkeyname;
+
+ /* fetch a list of the old subkeys so we can determine if any were deleted */
+
+ if ( !(old_subkeys = TALLOC_ZERO_P( ctr, REGSUBKEY_CTR )) ) {
+ DEBUG(0,("regdb_store_keys: talloc() failure!\n"));
+ return False;
+ }
+
+ regdb_fetch_keys( key, old_subkeys );
+
+ /* store the subkey list for the parent */
+
+ if ( !regdb_store_keys_internal( key, ctr ) ) {
+ DEBUG(0,("regdb_store_keys: Failed to store new subkey list for parent [%s}\n", key ));
+ return False;
+ }
+
+ /* now delete removed keys */
+
+ num_subkeys = regsubkey_ctr_numkeys( old_subkeys );
+ for ( i=0; i<num_subkeys; i++ ) {
+ oldkeyname = regsubkey_ctr_specific_key( old_subkeys, i );
+ if ( !regsubkey_ctr_key_exists( ctr, oldkeyname ) ) {
+ pstr_sprintf( path, "%s%c%s", key, '/', oldkeyname );
+ normalize_reg_path( path );
+ tdb_delete_bystring( tdb_reg, path );
+ }
+ }
+
+ TALLOC_FREE( old_subkeys );
+
+ /* now create records for any subkeys that don't already exist */
+
+ num_subkeys = regsubkey_ctr_numkeys( ctr );
+ for ( i=0; i<num_subkeys; i++ ) {
+ pstr_sprintf( path, "%s%c%s", key, '/', regsubkey_ctr_specific_key( ctr, i ) );
+
+ if ( !(subkeys = TALLOC_ZERO_P( ctr, REGSUBKEY_CTR )) ) {
+ DEBUG(0,("regdb_store_keys: talloc() failure!\n"));
+ return False;
+ }
+
+ if ( regdb_fetch_keys( path, subkeys ) == -1 ) {
+ /* create a record with 0 subkeys */
+ if ( !regdb_store_keys_internal( path, subkeys ) ) {
+ DEBUG(0,("regdb_store_keys: Failed to store new record for key [%s}\n", path ));
+ TALLOC_FREE( subkeys );
+ return False;
+ }
+ }
+
+ TALLOC_FREE( subkeys );
+ }
+
+ return True;
+}
+
+
+/***********************************************************************
+ Retrieve an array of strings containing subkeys. Memory should be
+ released by the caller.
+ ***********************************************************************/
+
+int regdb_fetch_keys( const char* key, REGSUBKEY_CTR *ctr )
+{
+ pstring path;
+ uint32 num_items;
+ TDB_DATA dbuf;
+ char *buf;
+ uint32 buflen, len;
+ int i;
+ fstring subkeyname;
+
+ DEBUG(11,("regdb_fetch_keys: Enter key => [%s]\n", key ? key : "NULL"));
+
+ pstrcpy( path, key );
+
+ /* convert to key format */
+ pstring_sub( path, "\\", "/" );
+ strupper_m( path );
+
+ dbuf = tdb_fetch_bystring( tdb_reg, 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 type;
+ pstring valuename;
+ uint32 size;
+ uint8 *data_p;
+ uint32 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;
+}
+
+/****************************************************************************
+ Pack all values in all printer keys
+ ***************************************************************************/
+
+static int regdb_pack_values(REGVAL_CTR *values, char *buf, int buflen)
+{
+ int len = 0;
+ int i;
+ REGISTRY_VALUE *val;
+ int num_values = regval_ctr_numvals( values );
+
+ if ( !values )
+ return 0;
+
+ /* pack the number of values first */
+
+ len += tdb_pack( buf+len, buflen-len, "d", num_values );
+
+ /* loop over all values */
+
+ for ( i=0; i<num_values; i++ ) {
+ val = regval_ctr_specific_value( values, i );
+ len += tdb_pack(buf+len, buflen-len, "fdB",
+ regval_name(val),
+ regval_type(val),
+ regval_size(val),
+ regval_data_p(val) );
+ }
+
+ return len;
+}
+
+/***********************************************************************
+ Retrieve an array of strings containing subkeys. Memory should be
+ released by the caller.
+ ***********************************************************************/
+
+int regdb_fetch_values( 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_reg, 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);
+}
+
+/***********************************************************************
+ Stub function since we do not currently support storing registry
+ values in the registry.tdb
+ ***********************************************************************/
+
+BOOL regdb_store_values( const char *key, REGVAL_CTR *values )
+{
+ TDB_DATA data;
+ pstring keystr;
+ int len, ret;
+
+ DEBUG(10,("regdb_store_values: Looking for value of key [%s] \n", key));
+
+ ZERO_STRUCT( data );
+
+ len = regdb_pack_values( values, data.dptr, data.dsize );
+ if ( len <= 0 ) {
+ DEBUG(0,("regdb_store_values: unable to pack values. len <= 0\n"));
+ return False;
+ }
+
+ data.dptr = SMB_MALLOC_ARRAY( char, len );
+ data.dsize = len;
+
+ len = regdb_pack_values( values, data.dptr, data.dsize );
+
+ SMB_ASSERT( len == data.dsize );
+
+ pstr_sprintf( keystr, "%s/%s", VALUE_PREFIX, key );
+ normalize_reg_path( keystr );
+
+ ret = tdb_store_bystring(tdb_reg, keystr, data, TDB_REPLACE);
+
+ SAFE_FREE( data.dptr );
+
+ return ret != -1 ;
+}
+
+
+/*
+ * Table of function pointers for default access
+ */
+
+REGISTRY_OPS regdb_ops = {
+ regdb_fetch_keys,
+ regdb_fetch_values,
+ regdb_store_keys,
+ regdb_store_values,
+ NULL
+};
+
+
projects / samba / blobdiff