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https://github.com/reactos/wine.git
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a7a6f5f31c
Refcount all objects, and use pointers internally.
216 lines
4.6 KiB
C
216 lines
4.6 KiB
C
/*
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* Implementation of the Microsoft Installer (msi.dll)
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*
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* Copyright 2002-2004 Mike McCormack for CodeWeavers
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <stdarg.h>
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#include "windef.h"
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#include "winbase.h"
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#include "winreg.h"
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#include "shlwapi.h"
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#include "wine/debug.h"
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#include "msi.h"
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#include "msiquery.h"
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#include "msipriv.h"
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WINE_DEFAULT_DEBUG_CHANNEL(msi);
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static CRITICAL_SECTION MSI_handle_cs;
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static CRITICAL_SECTION_DEBUG MSI_handle_cs_debug =
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{
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0, 0, &MSI_handle_cs,
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{ &MSI_handle_cs_debug.ProcessLocksList,
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&MSI_handle_cs_debug.ProcessLocksList },
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0, 0, { 0, (DWORD)(__FILE__ ": MSI_handle_cs") }
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};
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static CRITICAL_SECTION MSI_handle_cs = { &MSI_handle_cs_debug, -1, 0, 0, 0, 0 };
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MSIOBJECTHDR *msihandletable[MSIMAXHANDLES];
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MSIHANDLE alloc_msihandle( MSIOBJECTHDR *obj )
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{
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MSIHANDLE ret = 0;
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UINT i;
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EnterCriticalSection( &MSI_handle_cs );
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/* find a slot */
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for(i=0; i<MSIMAXHANDLES; i++)
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if( !msihandletable[i] )
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break;
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if( (i>=MSIMAXHANDLES) || msihandletable[i] )
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goto out;
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msiobj_addref( obj );
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msihandletable[i] = obj;
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ret = (MSIHANDLE) (i+1);
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out:
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TRACE("%p -> %ld\n", obj, ret );
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LeaveCriticalSection( &MSI_handle_cs );
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return ret;
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}
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void *msihandle2msiinfo(MSIHANDLE handle, UINT type)
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{
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MSIOBJECTHDR *ret = NULL;
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EnterCriticalSection( &MSI_handle_cs );
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handle--;
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if( handle<0 )
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goto out;
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if( handle>=MSIMAXHANDLES )
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goto out;
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if( !msihandletable[handle] )
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goto out;
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if( msihandletable[handle]->magic != MSIHANDLE_MAGIC )
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goto out;
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if( type && (msihandletable[handle]->type != type) )
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goto out;
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ret = msihandletable[handle];
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msiobj_addref( ret );
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out:
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LeaveCriticalSection( &MSI_handle_cs );
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return (void*) ret;
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}
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MSIHANDLE msiobj_findhandle( MSIOBJECTHDR *hdr )
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{
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MSIHANDLE ret = 0;
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UINT i;
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TRACE("%p\n", hdr);
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EnterCriticalSection( &MSI_handle_cs );
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for(i=0; (i<MSIMAXHANDLES) && !ret; i++)
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if( msihandletable[i] == hdr )
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ret = i+1;
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LeaveCriticalSection( &MSI_handle_cs );
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TRACE("%p -> %ld\n", hdr, ret);
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msiobj_addref( hdr );
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return ret;
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}
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void *alloc_msiobject(UINT type, UINT size, msihandledestructor destroy )
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{
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MSIOBJECTHDR *info;
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info = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, size );
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if( info )
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{
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info->magic = MSIHANDLE_MAGIC;
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info->type = type;
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info->refcount = 1;
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info->destructor = destroy;
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}
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return info;
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}
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void msiobj_addref( MSIOBJECTHDR *info )
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{
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TRACE("%p\n", info);
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if( !info )
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return;
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if( info->magic != MSIHANDLE_MAGIC )
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{
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ERR("Invalid handle!\n");
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return;
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}
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info->refcount++;
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}
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int msiobj_release( MSIOBJECTHDR *info )
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{
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int ret;
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TRACE("%p\n",info);
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if( !info )
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return -1;
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if( info->magic != MSIHANDLE_MAGIC )
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{
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ERR("Invalid handle!\n");
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return -1;
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}
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ret = info->refcount--;
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if (info->refcount == 0)
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{
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if( info->destructor )
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info->destructor( info );
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HeapFree( GetProcessHeap(), 0, info );
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TRACE("object %p destroyed\n", info);
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}
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return ret;
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}
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UINT WINAPI MsiCloseHandle(MSIHANDLE handle)
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{
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MSIOBJECTHDR *info;
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UINT ret = ERROR_INVALID_HANDLE;
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TRACE("%lx\n",handle);
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EnterCriticalSection( &MSI_handle_cs );
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info = msihandle2msiinfo(handle, 0);
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if( !info )
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goto out;
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if( info->magic != MSIHANDLE_MAGIC )
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{
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ERR("Invalid handle!\n");
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goto out;
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}
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msiobj_release( info );
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msihandletable[handle-1] = NULL;
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ret = ERROR_SUCCESS;
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TRACE("handle %lx Destroyed\n", handle);
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out:
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LeaveCriticalSection( &MSI_handle_cs );
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if( info )
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msiobj_release( info );
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return ret;
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}
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UINT WINAPI MsiCloseAllHandles(void)
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{
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UINT i;
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TRACE("\n");
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for(i=0; i<MSIMAXHANDLES; i++)
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MsiCloseHandle( i+1 );
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return 0;
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}
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