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crypt32: Create a helper to load a SIP function from an open key.

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This commit is contained in:
Juan Lang 2008-08-01 10:19:15 -07:00 committed by Alexandre Julliard
parent 3f563c3d9b
commit 7d78d394ae
1 changed files with 39 additions and 29 deletions
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68
dlls/crypt32/sip.c
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@ -254,6 +254,39 @@ end_function:
return TRUE;
}
static void *CRYPT_LoadSIPFuncFromKey(HKEY key, HMODULE *pLib)
{
LONG r;
DWORD size;
WCHAR dllName[MAX_PATH];
char functionName[MAX_PATH];
HMODULE lib;
void *func = NULL;
/* Read the DLL entry */
size = sizeof(dllName);
r = RegQueryValueExW(key, szDllName, NULL, NULL, (LPBYTE)dllName, &size);
if (r) goto end;
/* Read the Function entry */
size = sizeof(functionName);
r = RegQueryValueExA(key, "FuncName", NULL, NULL, (LPBYTE)functionName,
&size);
if (r) goto end;
lib = LoadLibraryW(dllName);
if (!lib)
goto end;
func = GetProcAddress(lib, functionName);
if (func)
*pLib = lib;
else
FreeLibrary(lib);
end:
return func;
}
/***********************************************************************
* CryptSIPRetrieveSubjectGuid (CRYPT32.@)
*
@ -378,40 +411,17 @@ static void *CRYPT_LoadSIPFunc(const GUID *pgSubject, LPCWSTR function,
HMODULE *pLib)
{
LONG r;
HKEY key = NULL;
DWORD size;
WCHAR dllName[MAX_PATH];
char functionName[MAX_PATH];
HMODULE lib;
HKEY key;
void *func = NULL;
TRACE("(%s, %s)\n", debugstr_guid(pgSubject), debugstr_w(function));
r = CRYPT_OpenSIPFunctionKey(pgSubject, function, &key);
if (r) goto error;
/* Read the DLL entry */
size = sizeof(dllName);
r = RegQueryValueExW(key, szDllName, NULL, NULL, (LPBYTE)dllName, &size);
if (r) goto error;
/* Read the Function entry */
size = sizeof(functionName);
r = RegQueryValueExA(key, "FuncName", NULL, NULL, (LPBYTE)functionName,
&size);
if (r) goto error;
lib = LoadLibraryW(dllName);
if (!lib)
goto error;
func = GetProcAddress(lib, functionName);
if (func)
*pLib = lib;
else
FreeLibrary(lib);
error:
RegCloseKey(key);
if (!r)
{
func = CRYPT_LoadSIPFuncFromKey(key, pLib);
RegCloseKey(key);
}
TRACE("returning %p\n", func);
return func;
}