Sweden-Number/dlls/msi/handle.c

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/*
* Implementation of the Microsoft Installer (msi.dll)
*
* Copyright 2002 Mike McCormack for CodeWeavers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdarg.h>
#include "windef.h"
#include "winbase.h"
#include "winreg.h"
#include "shlwapi.h"
#include "wine/debug.h"
#include "msi.h"
#include "msiquery.h"
#include "msipriv.h"
WINE_DEFAULT_DEBUG_CHANNEL(msi);
MSIHANDLEINFO *msihandletable[MSIMAXHANDLES];
MSIHANDLE alloc_msihandle(UINT type, UINT size, msihandledestructor destroy)
{
MSIHANDLEINFO *info;
UINT i;
/* find a slot */
for(i=0; i<MSIMAXHANDLES; i++)
if( !msihandletable[i] )
break;
if( (i>=MSIMAXHANDLES) || msihandletable[i] )
return 0;
size += sizeof (MSIHANDLEINFO);
info = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, size );
if( !info )
return 0;
info->magic = MSIHANDLE_MAGIC;
info->type = type;
info->destructor = destroy;
msihandletable[i] = info;
return (MSIHANDLE) (i+1);
}
void *msihandle2msiinfo(MSIHANDLE handle, UINT type)
{
handle--;
if( handle<0 )
return NULL;
if( handle>=MSIMAXHANDLES )
return NULL;
if( !msihandletable[handle] )
return NULL;
if( msihandletable[handle]->magic != MSIHANDLE_MAGIC )
return NULL;
if( type && (msihandletable[handle]->type != type) )
return NULL;
return &msihandletable[handle][1];
}
UINT WINAPI MsiCloseHandle(MSIHANDLE handle)
{
MSIHANDLEINFO *info = msihandle2msiinfo(handle, 0);
TRACE("%lx\n",handle);
if( !info )
return ERROR_INVALID_HANDLE;
info--;
if( info->magic != MSIHANDLE_MAGIC )
{
ERR("Invalid handle!\n");
return ERROR_INVALID_HANDLE;
}
if( info->destructor )
info->destructor( &info[1] );
HeapFree( GetProcessHeap(), 0, info );
msihandletable[handle-1] = NULL;
TRACE("Destroyed\n");
return 0;
}
UINT WINAPI MsiCloseAllHandles(void)
{
UINT i;
TRACE("\n");
for(i=0; i<MSIMAXHANDLES; i++)
MsiCloseHandle( i+1 );
return 0;
}