///////////////////////////////////////////////////////////////////////
private static bool IsFileTrusted(
string fileName,
IntPtr fileHandle,
bool userInterface,
bool userPrompt,
bool revocation,
bool install,
ref int returnValue,
ref string error
)
{
if (String.IsNullOrEmpty(fileName))
{
error = "invalid file name";
return(false);
}
#if WINDOWS
if (!VersionOps.IsWindowsOperatingSystem())
{
error = "not supported on this operating system";
return(false);
}
try
{
UnsafeNativeMethods.WINTRUST_FILE_INFO file =
new UnsafeNativeMethods.WINTRUST_FILE_INFO();
file.cbStruct = (uint)Marshal.SizeOf(
typeof(UnsafeNativeMethods.WINTRUST_FILE_INFO));
file.pcwszFilePath = fileName;
file.hFile = fileHandle;
file.pgKnownSubject = IntPtr.Zero;
IntPtr pFile = IntPtr.Zero;
try
{
pFile = Marshal.AllocCoTaskMem((int)file.cbStruct);
if (pFile != IntPtr.Zero)
{
Marshal.StructureToPtr(file, pFile, false);
UnsafeNativeMethods.WINTRUST_DATA winTrustData =
new UnsafeNativeMethods.WINTRUST_DATA();
winTrustData.cbStruct = (uint)Marshal.SizeOf(
typeof(UnsafeNativeMethods.WINTRUST_DATA));
winTrustData.pPolicyCallbackData = IntPtr.Zero;
winTrustData.pSIPClientData = IntPtr.Zero;
winTrustData.dwUIChoice = userInterface && userPrompt ?
UnsafeNativeMethods.WTD_UI_ALL :
UnsafeNativeMethods.WTD_UI_NONE;
winTrustData.fdwRevocationChecks = revocation ?
UnsafeNativeMethods.WTD_REVOKE_WHOLECHAIN :
UnsafeNativeMethods.WTD_REVOKE_NONE;
winTrustData.dwUnionChoice =
UnsafeNativeMethods.WTD_CHOICE_FILE;
winTrustData.pFile = pFile;
winTrustData.dwStateAction =
UnsafeNativeMethods.WTD_STATEACTION_IGNORE;
winTrustData.hWVTStateData = IntPtr.Zero;
winTrustData.pwszURLReference = null;
winTrustData.dwProvFlags =
UnsafeNativeMethods.WTD_SAFER_FLAG;
winTrustData.dwUIContext = install ?
UnsafeNativeMethods.WTD_UICONTEXT_INSTALL :
UnsafeNativeMethods.WTD_UICONTEXT_EXECUTE;
IntPtr hWnd = userInterface ?
IntPtr.Zero : INVALID_HANDLE_VALUE;
Guid actionId = GetActionId();
returnValue = UnsafeNativeMethods.WinVerifyTrust(
hWnd, actionId, ref winTrustData);
return(true);
}
else
{
error = "out of memory";
}
}
finally
{
if (pFile != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(pFile);
pFile = IntPtr.Zero;
}
}
}
catch (Exception e)
{
error = e.ToString();
}
#else
error = "not implemented";
#endif
return(false);
}
///////////////////////////////////////////////////////////////////////
private static ReturnCode IsFileTrusted(
string fileName,
IntPtr fileHandle,
bool userInterface,
bool userPrompt,
bool revocation,
bool install,
ref int returnValue,
ref Result error
)
{
if (String.IsNullOrEmpty(fileName))
{
error = "invalid file name";
return(ReturnCode.Error);
}
#if WINDOWS
if (!PlatformOps.IsWindowsOperatingSystem())
{
error = "not supported on this operating system";
return(ReturnCode.Error);
}
try
{
UnsafeNativeMethods.WINTRUST_FILE_INFO file =
new UnsafeNativeMethods.WINTRUST_FILE_INFO();
file.cbStruct = (uint)Marshal.SizeOf(
typeof(UnsafeNativeMethods.WINTRUST_FILE_INFO));
file.pcwszFilePath = fileName;
file.hFile = fileHandle;
file.pgKnownSubject = IntPtr.Zero;
IntPtr pFile = IntPtr.Zero;
try
{
pFile = Marshal.AllocCoTaskMem((int)file.cbStruct);
if (pFile != IntPtr.Zero)
{
Marshal.StructureToPtr(file, pFile, false);
UnsafeNativeMethods.WINTRUST_DATA winTrustData =
new UnsafeNativeMethods.WINTRUST_DATA();
winTrustData.cbStruct = (uint)Marshal.SizeOf(
typeof(UnsafeNativeMethods.WINTRUST_DATA));
winTrustData.pPolicyCallbackData = IntPtr.Zero;
winTrustData.pSIPClientData = IntPtr.Zero;
winTrustData.dwUIChoice = userInterface && userPrompt ?
UnsafeNativeMethods.WTD_UI_ALL :
UnsafeNativeMethods.WTD_UI_NONE;
winTrustData.fdwRevocationChecks = revocation ?
UnsafeNativeMethods.WTD_REVOKE_WHOLECHAIN :
UnsafeNativeMethods.WTD_REVOKE_NONE;
winTrustData.dwUnionChoice =
UnsafeNativeMethods.WTD_CHOICE_FILE;
winTrustData.pFile = pFile;
winTrustData.dwStateAction =
UnsafeNativeMethods.WTD_STATEACTION_IGNORE;
winTrustData.hWVTStateData = IntPtr.Zero;
winTrustData.pwszURLReference = null;
winTrustData.dwProvFlags =
UnsafeNativeMethods.WTD_SAFER_FLAG;
winTrustData.dwUIContext = install ?
UnsafeNativeMethods.WTD_UICONTEXT_INSTALL :
UnsafeNativeMethods.WTD_UICONTEXT_EXECUTE;
IntPtr hWnd = userInterface ?
WindowOps.GetInteractiveHandle() :
INVALID_HANDLE_VALUE;
Guid actionId = GetActionId();
returnValue = UnsafeNativeMethods.WinVerifyTrust(
hWnd, actionId, ref winTrustData);
return(ReturnCode.Ok);
}
else
{
error = "out of memory";
}
}
finally
{
if (pFile != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(pFile);
pFile = IntPtr.Zero;
}
}
}
catch (Exception e)
{
error = e;
}
#else
error = "not implemented";
#endif
TraceOps.DebugTrace(String.Format(
"IsFileTrusted: file {0} trust failure, " +
"userInterface = {1}, revocation = {2}, " +
"install = {3}, returnValue = {4}, error = {5}",
FormatOps.WrapOrNull(fileName),
userInterface, revocation, install,
returnValue, FormatOps.WrapOrNull(error)),
typeof(SecurityOps).Name,
TracePriority.SecurityError);
return(ReturnCode.Error);
}
