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/*
* 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 registry frontend view functions. */
#include "includes.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_RPC_SRV
/***********************************************************************
Init the talloc context held by a REGSUBKEY_CTR structure
This now zero's the structure
**********************************************************************/
void regsubkey_ctr_init( REGSUBKEY_CTR *ctr )
{
ZERO_STRUCTP( ctr );
ctr->ctx = talloc_init("regsubkey_ctr_init for ctr %p", ctr);
}
/***********************************************************************
Add a new key to the array
**********************************************************************/
int regsubkey_ctr_addkey( REGSUBKEY_CTR *ctr, const char *keyname )
{
char **pp;
if ( !keyname )
return ctr->num_subkeys;
/* make sure the keyname is not already there */
if ( regsubkey_ctr_key_exists( ctr, keyname ) )
return ctr->num_subkeys;
/* allocate a space for the char* in the array */
if ( ctr->subkeys == 0 )
ctr->subkeys = TALLOC_P( ctr->ctx, char *);
else {
pp = TALLOC_REALLOC_ARRAY( ctr->ctx, ctr->subkeys, char *, ctr->num_subkeys+1);
if ( pp )
ctr->subkeys = pp;
}
/* allocate the string and save it in the array */
ctr->subkeys[ctr->num_subkeys] = talloc_strdup( ctr->ctx, keyname );
ctr->num_subkeys++;
return ctr->num_subkeys;
}
/***********************************************************************
Add a new key to the array
**********************************************************************/
int regsubkey_ctr_delkey( REGSUBKEY_CTR *ctr, const char *keyname )
{
int i;
if ( !keyname )
return ctr->num_subkeys;
/* make sure the keyname is actually already there */
for ( i=0; i<ctr->num_subkeys; i++ ) {
if ( strequal( ctr->subkeys[i], keyname ) )
break;
}
if ( i == ctr->num_subkeys )
return ctr->num_subkeys;
/* update if we have any keys left */
ctr->num_subkeys--;
if ( i < ctr->num_subkeys )
memmove( &ctr->subkeys[i], &ctr->subkeys[i+1], sizeof(char*) * (ctr->num_subkeys-i) );
return ctr->num_subkeys;
}
/***********************************************************************
Check for the existance of a key
**********************************************************************/
BOOL regsubkey_ctr_key_exists( REGSUBKEY_CTR *ctr, const char *keyname )
{
int i;
for ( i=0; i<ctr->num_subkeys; i++ ) {
if ( strequal( ctr->subkeys[i],keyname ) )
return True;
}
return False;
}
/***********************************************************************
How many keys does the container hold ?
**********************************************************************/
int regsubkey_ctr_numkeys( REGSUBKEY_CTR *ctr )
{
return ctr->num_subkeys;
}
/***********************************************************************
Retreive a specific key string
**********************************************************************/
char* regsubkey_ctr_specific_key( REGSUBKEY_CTR *ctr, uint32 key_index )
{
if ( ! (key_index < ctr->num_subkeys) )
return NULL;
return ctr->subkeys[key_index];
}
/***********************************************************************
free memory held by a REGSUBKEY_CTR structure
**********************************************************************/
void regsubkey_ctr_destroy( REGSUBKEY_CTR *ctr )
{
if ( ctr ) {
talloc_destroy( ctr->ctx );
ZERO_STRUCTP( ctr );
}
}
/*
* Utility functions for REGVAL_CTR
*/
/***********************************************************************
Init the talloc context held by a REGSUBKEY_CTR structure
This now zero's the structure
**********************************************************************/
void regval_ctr_init( REGVAL_CTR *ctr )
{
ZERO_STRUCTP( ctr );
ctr->ctx = talloc_init("regval_ctr_init for ctr %p", ctr);
}
/***********************************************************************
How many keys does the container hold ?
**********************************************************************/
int regval_ctr_numvals( REGVAL_CTR *ctr )
{
return ctr->num_values;
}
/***********************************************************************
allocate memory for and duplicate a REGISTRY_VALUE.
This is malloc'd memory so the caller should free it when done
**********************************************************************/
REGISTRY_VALUE* dup_registry_value( REGISTRY_VALUE *val )
{
REGISTRY_VALUE *copy = NULL;
if ( !val )
return NULL;
if ( !(copy = SMB_MALLOC_P( REGISTRY_VALUE)) ) {
DEBUG(0,("dup_registry_value: malloc() failed!\n"));
return NULL;
}
/* copy all the non-pointer initial data */
memcpy( copy, val, sizeof(REGISTRY_VALUE) );
if ( val->data_p )
{
if ( !(copy->data_p = memdup( val->data_p, val->size )) ) {
DEBUG(0,("dup_registry_value: memdup() failed for [%d] bytes!\n",
val->size));
SAFE_FREE( copy );
}
}
return copy;
}
/**********************************************************************
free the memory allocated to a REGISTRY_VALUE
*********************************************************************/
void free_registry_value( REGISTRY_VALUE *val )
{
if ( !val )
return;
SAFE_FREE( val->data_p );
SAFE_FREE( val );
return;
}
/**********************************************************************
*********************************************************************/
uint8* regval_data_p( REGISTRY_VALUE *val )
{
return val->data_p;
}
/**********************************************************************
*********************************************************************/
uint32 regval_size( REGISTRY_VALUE *val )
{
return val->size;
}
/**********************************************************************
*********************************************************************/
char* regval_name( REGISTRY_VALUE *val )
{
return val->valuename;
}
/**********************************************************************
*********************************************************************/
uint32 regval_type( REGISTRY_VALUE *val )
{
return val->type;
}
/***********************************************************************
Retreive a pointer to a specific value. Caller shoud dup the structure
since this memory may go away with a regval_ctr_destroy()
**********************************************************************/
REGISTRY_VALUE* regval_ctr_specific_value( REGVAL_CTR *ctr, uint32 idx )
{
if ( !(idx < ctr->num_values) )
return NULL;
return ctr->values[idx];
}
/***********************************************************************
Retrive the TALLOC_CTX associated with a REGISTRY_VALUE
**********************************************************************/
TALLOC_CTX* regval_ctr_getctx( REGVAL_CTR *val )
{
if ( !val )
return NULL;
return val->ctx; }
/***********************************************************************
Check for the existance of a value
**********************************************************************/
BOOL regval_ctr_key_exists( REGVAL_CTR *ctr, const char *value )
{
int i;
for ( i=0; i<ctr->num_values; i++ ) {
if ( strequal( ctr->values[i]->valuename, value) )
return True;
}
return False;
}
/***********************************************************************
Add a new registry value to the array
**********************************************************************/
int regval_ctr_addvalue( REGVAL_CTR *ctr, const char *name, uint16 type,
const char *data_p, size_t size )
{
REGISTRY_VALUE **ppreg;
if ( !name )
return ctr->num_values;
/* Delete the current value (if it exists) and add the new one */
regval_ctr_delvalue( ctr, name );
/* allocate a slot in the array of pointers */
if ( ctr->num_values == 0 )
ctr->values = TALLOC_P( ctr->ctx, REGISTRY_VALUE *);
else {
ppreg = TALLOC_REALLOC_ARRAY( ctr->ctx, ctr->values, REGISTRY_VALUE *, ctr->num_values+1 );
if ( ppreg )
ctr->values = ppreg;
}
/* allocate a new value and store the pointer in the arrya */
ctr->values[ctr->num_values] = TALLOC_P( ctr->ctx, REGISTRY_VALUE);
/* init the value */
fstrcpy( ctr->values[ctr->num_values]->valuename, name );
ctr->values[ctr->num_values]->type = type;
ctr->values[ctr->num_values]->data_p = TALLOC_MEMDUP( ctr->ctx, data_p, size );
ctr->values[ctr->num_values]->size = size;
ctr->num_values++;
return ctr->num_values;
}
/***********************************************************************
Add a new registry value to the array
**********************************************************************/
int regval_ctr_copyvalue( REGVAL_CTR *ctr, REGISTRY_VALUE *val )
{
REGISTRY_VALUE **ppreg;
if ( val )
{
/* allocate a slot in the array of pointers */
if ( ctr->num_values == 0 )
ctr->values = TALLOC_P( ctr->ctx, REGISTRY_VALUE *);
else {
ppreg = TALLOC_REALLOC_ARRAY( ctr->ctx, ctr->values, REGISTRY_VALUE *, ctr->num_values+1 );
if ( ppreg )
ctr->values = ppreg;
}
/* allocate a new value and store the pointer in the arrya */
ctr->values[ctr->num_values] = TALLOC_P( ctr->ctx, REGISTRY_VALUE);
/* init the value */
fstrcpy( ctr->values[ctr->num_values]->valuename, val->valuename );
ctr->values[ctr->num_values]->type = val->type;
ctr->values[ctr->num_values]->data_p = TALLOC_MEMDUP( ctr->ctx, val->data_p, val->size );
ctr->values[ctr->num_values]->size = val->size;
ctr->num_values++;
}
return ctr->num_values;
}
/***********************************************************************
Delete a single value from the registry container.
No need to free memory since it is talloc'd.
**********************************************************************/
int regval_ctr_delvalue( REGVAL_CTR *ctr, const char *name )
{
int i;
for ( i=0; i<ctr->num_values; i++ ) {
if ( strequal( ctr->values[i]->valuename, name ) )
break;
}
/* just return if we don't find it */
if ( i == ctr->num_values )
return ctr->num_values;
/* If 'i' was not the last element, just shift everything down one */
ctr->num_values--;
if ( i < ctr->num_values )
memmove( &ctr->values[i], &ctr->values[i+1], sizeof(REGISTRY_VALUE*)*(ctr->num_values-i) );
return ctr->num_values;
}
/***********************************************************************
Retrieve single value from the registry container.
No need to free memory since it is talloc'd.
**********************************************************************/
REGISTRY_VALUE* regval_ctr_getvalue( REGVAL_CTR *ctr, const char *name )
{
int i;
/* search for the value */
for ( i=0; i<ctr->num_values; i++ ) {
if ( strequal( ctr->values[i]->valuename, name ) )
return ctr->values[i];
}
return NULL;
}
/***********************************************************************
free memory held by a REGVAL_CTR structure
**********************************************************************/
void regval_ctr_destroy( REGVAL_CTR *ctr )
{
if ( ctr ) {
talloc_destroy( ctr->ctx );
ZERO_STRUCTP( ctr );
}
}
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