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msisip: Determine whether a file is an MSI file based on its CLSID rather than its extension.

This commit is contained in:
Juan Lang 2010-11-24 14:35:57 -08:00 committed by Alexandre Julliard
parent 50e2f2f10c
commit ef4560e51f
1 changed files with 20 additions and 14 deletions
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34
dlls/msisip/main.c
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@ -24,6 +24,7 @@
#include "mssip.h"
#define COBJMACROS
#include "objbase.h"
#include "initguid.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(msisip);
@ -217,34 +218,39 @@ end:
return ret;
}
DEFINE_GUID(CLSID_MsiTransform, 0x000c1082,0x0000,0x0000,0xc0,0x00,0x00,0x00,0x00,0x00,0x00,0x46);
DEFINE_GUID(CLSID_MsiDatabase, 0x000c1084,0x0000,0x0000,0xc0,0x00,0x00,0x00,0x00,0x00,0x00,0x46);
DEFINE_GUID(CLSID_MsiPatch, 0x000c1086,0x0000,0x0000,0xc0,0x00,0x00,0x00,0x00,0x00,0x00,0x46);
/***********************************************************************
* MsiSIPIsMyTypeOfFile (MSISIP.@)
*/
BOOL WINAPI MsiSIPIsMyTypeOfFile(WCHAR *name, GUID *subject)
{
static const WCHAR msi[] = { '.','m','s','i',0 };
static const WCHAR msp[] = { '.','m','s','p',0 };
BOOL ret = FALSE;
IStorage *stg = NULL;
HRESULT r;
TRACE("(%s, %p)\n", debugstr_w(name), subject);
if (lstrlenW(name) < lstrlenW(msi))
return FALSE;
else if (lstrcmpiW(name + lstrlenW(name) - lstrlenW(msi), msi) &&
lstrcmpiW(name + lstrlenW(name) - lstrlenW(msp), msp))
return FALSE;
else
r = StgOpenStorage(name, NULL, STGM_DIRECT|STGM_READ|STGM_SHARE_DENY_WRITE,
NULL, 0, &stg);
if (SUCCEEDED(r))
{
IStorage *stg = NULL;
HRESULT r = StgOpenStorage(name, NULL,
STGM_DIRECT|STGM_READ|STGM_SHARE_DENY_WRITE, NULL, 0, &stg);
STATSTG stat;
r = IStorage_Stat(stg, &stat, STATFLAG_NONAME);
if (SUCCEEDED(r))
{
IStorage_Release(stg);
*subject = mySubject;
ret = TRUE;
if (IsEqualGUID(&stat.clsid, &CLSID_MsiDatabase) ||
IsEqualGUID(&stat.clsid, &CLSID_MsiPatch) ||
IsEqualGUID(&stat.clsid, &CLSID_MsiTransform))
{
ret = TRUE;
*subject = mySubject;
}
}
IStorage_Release(stg);
}
return ret;
}