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wintrust: Cache provider functions in WintrustLoadFunctionPointers(). 

Signed-off-by: Paul Gofman <pgofman@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Paul Gofman 2021-10-04 21:44:32 +03:00 committed by Alexandre Julliard
parent 165d1c0bef
commit e7b0b35d57
1 changed files with 52 additions and 0 deletions
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52
dlls/wintrust/register.c
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@ -835,6 +835,23 @@ error_close_key:
return Func;
}
static CRITICAL_SECTION cache_cs;
static CRITICAL_SECTION_DEBUG cache_cs_debug =
{
0, 0, &cache_cs,
{ &cache_cs_debug.ProcessLocksList, &cache_cs_debug.ProcessLocksList },
0, 0, { (DWORD_PTR)(__FILE__ ": cache_cs") }
};
static CRITICAL_SECTION cache_cs = { &cache_cs_debug, -1, 0, 0, 0, 0 };
static struct provider_cache_entry
{
GUID guid;
CRYPT_PROVIDER_FUNCTIONS provider_functions;
}
*provider_cache;
static unsigned int provider_cache_size;
/***********************************************************************
* WintrustLoadFunctionPointers (WINTRUST.@)
*/
@ -842,6 +859,8 @@ BOOL WINAPI WintrustLoadFunctionPointers( GUID* pgActionID,
CRYPT_PROVIDER_FUNCTIONS* pPfns )
{
WCHAR GuidString[39];
BOOL cached = FALSE;
unsigned int i;
TRACE("(%s %p)\n", debugstr_guid(pgActionID), pPfns);
@ -853,6 +872,20 @@ BOOL WINAPI WintrustLoadFunctionPointers( GUID* pgActionID,
}
if (pPfns->cbStruct != sizeof(CRYPT_PROVIDER_FUNCTIONS)) return FALSE;
EnterCriticalSection( &cache_cs );
for (i = 0; i < provider_cache_size; ++i)
{
if (IsEqualGUID( &provider_cache[i].guid, pgActionID ))
{
TRACE( "Using cached data.\n" );
*pPfns = provider_cache[i].provider_functions;
cached = TRUE;
break;
}
}
LeaveCriticalSection( &cache_cs );
if (cached) return TRUE;
/* Create this string only once, instead of in the helper function */
WINTRUST_Guid2Wstr( pgActionID, GuidString);
@ -873,6 +906,25 @@ BOOL WINAPI WintrustLoadFunctionPointers( GUID* pgActionID,
pPfns->pfnTestFinalPolicy = (PFN_PROVIDER_TESTFINALPOLICY_CALL)WINTRUST_ReadProviderFromReg(GuidString, DiagnosticPolicy);
pPfns->pfnCleanupPolicy = (PFN_PROVIDER_CLEANUP_CALL)WINTRUST_ReadProviderFromReg(GuidString, Cleanup);
EnterCriticalSection( &cache_cs );
for (i = 0; i < provider_cache_size; ++i)
if (IsEqualGUID( &provider_cache[i].guid, pgActionID )) break;
if (i == provider_cache_size)
{
struct provider_cache_entry *new;
new = realloc( provider_cache, (provider_cache_size + 1) * sizeof(*new) );
if (new)
{
provider_cache = new;
provider_cache[provider_cache_size].guid = *pgActionID;
provider_cache[provider_cache_size].provider_functions = *pPfns;
++provider_cache_size;
}
}
LeaveCriticalSection( &cache_cs );
return TRUE;
}