splitting off storage/retrieval routines for abstracting the

registry view front end.  Now to plug in the various hooks.
(This used to be commit 9772acd9ad44af2800dfb9d8610c2d5c23eaceb4)

1 files changed, 334 insertions, 0 deletions

diff --git a/source3/registry/reg_frontend.c b/source3/registry/reg_frontend.c
new file mode 100644
index 0000000000..c4e332ed6b
--- /dev/null
+++ b/source3/registry/reg_frontend.c
@@ -0,0 +1,334 @@
+/* 
+ *  Unix SMB/CIFS implementation.
+ *  RPC Pipe client / server routines
+ *  Copyright (C) Gerald Carter                     2002.
+ *
+ *  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 registry database functions. */
+
+#include "includes.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_RPC_SRV
+
+
+
+static TDB_CONTEXT *tdb_reg;
+
+
+/***********************************************************************
+ Open the registry database
+ ***********************************************************************/
+ 
+static BOOL init_registry_data( void )
+{
+	pstring keyname;
+	char *subkeys[3];
+
+	/* HKEY_LOCAL_MACHINE */
+	
+	pstrcpy( keyname, KEY_HKLM );
+	subkeys[0] = "SYSTEM";
+	if ( !store_reg_keys( keyname, subkeys, 1 ))
+		return False;
+		
+	pstrcpy( keyname, KEY_HKLM );
+	pstrcat( keyname, "/SYSTEM" );
+	subkeys[0] = "CurrentControlSet";
+	if ( !store_reg_keys( keyname, subkeys, 1 ))
+		return False;
+		
+	pstrcpy( keyname, KEY_HKLM );
+	pstrcat( keyname, "/SYSTEM/CurrentControlSet" );
+	subkeys[0] = "Control";
+	subkeys[1] = "services";
+	if ( !store_reg_keys( keyname, subkeys, 2 ))
+		return False;
+
+	pstrcpy( keyname, KEY_HKLM );
+	pstrcat( keyname, "/SYSTEM/CurrentControlSet/Control" );
+	subkeys[0] = "Print";
+	subkeys[1] = "ProduceOptions";
+	if ( !store_reg_keys( keyname, subkeys, 2 ))
+		return False;
+
+	pstrcpy( keyname, KEY_HKLM );
+	pstrcat( keyname, "/SYSTEM/CurrentControlSet/Control/Print" );
+	subkeys[0] = "Environments";
+	subkeys[1] = "Forms";
+	subkeys[2] = "Printers";
+	if ( !store_reg_keys( keyname, subkeys, 3 ))
+		return False;
+
+	pstrcpy( keyname, KEY_HKLM );
+	pstrcat( keyname, "/SYSTEM/CurrentControlSet/Control/ProductOptions" );
+	if ( !store_reg_keys( keyname, subkeys, 0 ))
+		return False;
+
+	pstrcpy( keyname, KEY_HKLM );
+	pstrcat( keyname, "/SYSTEM/CurrentControlSet/services" );
+	subkeys[0] = "Netlogon";
+	if ( !store_reg_keys( keyname, subkeys, 1 ))
+		return False;
+		
+	pstrcpy( keyname, KEY_HKLM );
+	pstrcat( keyname, "/SYSTEM/CurrentControlSet/services/Netlogon" );
+	subkeys[0] = "parameters";
+	if ( !store_reg_keys( keyname, subkeys, 1 ))
+		return False;
+		
+	pstrcpy( keyname, KEY_HKLM );
+	pstrcat( keyname, "/SYSTEM/CurrentControlSet/services/Netlogon/parameters" );
+	if ( !store_reg_keys( keyname, subkeys, 0 ))
+		return False;
+
+	
+	/* HKEY_USER */
+		
+	pstrcpy( keyname, KEY_HKU );
+	if ( !store_reg_keys( keyname, subkeys, 0 ) )
+		return False;
+		
+	return True;
+}
+
+
+/***********************************************************************
+ Open the registry database
+ ***********************************************************************/
+ 
+BOOL init_registry( void )
+{
+	static pid_t local_pid;
+	
+	
+	if (tdb_reg && local_pid == sys_getpid())
+		return True;
+
+	/* 
+	 * try to open first without creating so we can determine
+	 * if we need to init the data in the registry
+	 */
+	
+	tdb_reg = tdb_open_log(lock_path("registry.tdb"), 0, TDB_DEFAULT, O_RDWR, 0600);
+	if ( !tdb_reg ) 
+	{
+		tdb_reg = tdb_open_log(lock_path("registry.tdb"), 0, TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
+		if ( !tdb_reg ) {
+			DEBUG(0,("init_registry: Failed to open registry %s (%s)\n",
+				lock_path("registry.tdb"), strerror(errno) ));
+			return False;
+		}
+		
+		DEBUG(10,("init_registry: Successfully created registry tdb\n"));
+		
+		/* create the registry here */
+		if ( !init_registry_data() ) {
+			DEBUG(0,("init_registry: Failed to initiailize data in registry!\n"));
+			return False;
+		}
+	}
+
+	local_pid = sys_getpid();
+	
+	return True;
+}
+
+/***********************************************************************
+ 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
+ ***********************************************************************/
+ 
+BOOL store_reg_keys( char *keyname, char **subkeys, uint32 num_subkeys  )
+{
+	TDB_DATA kbuf, dbuf;
+	char *buffer, *tmpbuf;
+	int i = 0;
+	uint32 len, buflen;
+	BOOL ret = True;
+	
+	if ( !keyname )
+		return False;
+	
+	/* allocate some initial memory */
+		
+	buffer = 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", subkeys[i]);
+		if ( len > buflen ) {
+			/* allocate some extra space */
+			if ((tmpbuf = Realloc( buffer, len*2 )) == NULL) {
+				DEBUG(0,("store_reg_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", subkeys[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;
+}
+
+/***********************************************************************
+ Retrieve an array of strings containing subkeys.  Memory should be 
+ released by the caller.  The subkeys are stored in a catenated string
+ of null terminated character strings
+ ***********************************************************************/
+
+int fetch_reg_keys( char* key, char **subkeys )
+{
+	pstring path;
+	uint32 num_items;
+	TDB_DATA dbuf;
+	char *buf;
+	uint32 buflen, len;
+	int i;
+	char *s;
+
+	
+	pstrcpy( path, key );
+	
+	/* convert to key format */
+	pstring_sub( path, "\\", "/" );
+	
+	dbuf = tdb_fetch_by_string( tdb_reg, path );
+	
+	buf = dbuf.dptr;
+	buflen = dbuf.dsize;
+	
+	if ( !buf ) {
+		DEBUG(5,("fetch_reg_keys: Failed to fetch any subkeys for [%s]\n", key));
+		return 0;
+	}
+	
+	len = tdb_unpack( buf, buflen, "d", &num_items);
+	if (num_items) {
+		if ( (*subkeys = (char*)malloc(sizeof(fstring)*num_items)) == NULL ) {
+			DEBUG(0,("fetch_reg_keys: Failed to malloc memory for subkey array containing [%d] items!\n",
+				num_items));
+			num_items = -1;
+			goto done;
+		}
+	}
+	
+	s = *subkeys;
+	for (i=0; i<num_items; i++) {
+		len += tdb_unpack( buf+len, buflen-len, "f", s );
+		s += strlen(s) + 1;
+	}
+
+done:	
+	SAFE_FREE(dbuf.dptr);
+	return num_items;
+}
+
+/***********************************************************************
+ count the number of subkeys dtored in the registry
+ ***********************************************************************/
+
+int fetch_reg_keys_count( char* key )
+{
+	pstring path;
+	uint32 num_items;
+	TDB_DATA dbuf;
+	char *buf;
+	uint32 buflen, len;
+	
+	
+	pstrcpy( path, key );
+	
+	/* convert to key format */
+	pstring_sub( path, "\\", "/" );
+	
+	dbuf = tdb_fetch_by_string( tdb_reg, path );
+	
+	buf = dbuf.dptr;
+	buflen = dbuf.dsize;
+	
+	if ( !buf ) {
+		DEBUG(5,("fetch_reg_keys: Failed to fetch any subkeys for [%s]\n", key));
+		return 0;
+	}
+	
+	len = tdb_unpack( buf, buflen, "d", &num_items);
+	
+	SAFE_FREE( buf );
+	
+	return num_items;
+}
+
+/***********************************************************************
+ retreive a specific subkey specified by index.  The subkey parameter
+ is assumed to be an fstring.
+ ***********************************************************************/
+
+BOOL fetch_reg_keys_specific( char* key, char* subkey, uint32 key_index )
+{
+	int num_subkeys, i;
+	char *subkeys = NULL;
+	char *s;
+	
+	num_subkeys = fetch_reg_keys( key, &subkeys );
+	if ( num_subkeys == -1 )
+		return False;
+
+	s = subkeys;
+	for ( i=0; i<num_subkeys; i++ ) {
+		/* copy the key if the index matches */
+		if ( i == key_index ) {
+			fstrcpy( subkey, s );
+			break;
+		}
+		
+		/* go onto the next string */
+		s += strlen(s) + 1;
+	}
+	
+	SAFE_FREE(subkeys);
+	
+	return True;
+}
+
+
+  
+