private static NetworkCredential UnpackAuthenticationBuffer([NotNull] SafeNativeMemory outCredBuffer)
{
Contract.Requires(outCredBuffer != null);
const int maxLen = 100;
var usernameBuf = new StringBuilder(maxLen);
var passwordBuf = new StringBuilder(maxLen);
var domainBuf = new StringBuilder(maxLen);
var maxUserLen = maxLen;
var maxDomainLen = maxLen;
var maxPasswordLen = maxLen;
if (!NativeMethods.CredUnPackAuthenticationBuffer(1, outCredBuffer.DangerousGetHandle(), outCredBuffer.Size, usernameBuf, ref maxUserLen, domainBuf, ref maxDomainLen, passwordBuf, ref maxPasswordLen))
{
return(null);
}
return(new NetworkCredential()
{
UserName = usernameBuf.ToString(),
Password = passwordBuf.ToString(),
Domain = domainBuf.ToString()
});
}
public static bool GetTokenInformation([NotNull] SafeTokenHandle hToken, TOKEN_INFORMATION_CLASS tokenInfoClass, [NotNull] SafeNativeMemory pTokenInfo)
{
Contract.Requires(hToken != null);
Contract.Requires(pTokenInfo != null);
return(GetTokenInformation(hToken, tokenInfoClass, pTokenInfo.DangerousGetHandle(), pTokenInfo.Size, out _));
}
private static SafeNativeMemory PackAuthenticationBuffer([CanBeNull] NetworkCredential?credential)
{
var userName = credential?.UserName;
if (string.IsNullOrEmpty(userName))
{
return(new SafeNativeMemory());
}
var inCredSize = 0;
NativeMethods.CredPackAuthenticationBuffer(0, userName, string.Empty, IntPtr.Zero, ref inCredSize);
var buffer = new SafeNativeMemory(inCredSize);
NativeMethods.CredPackAuthenticationBuffer(0, userName, string.Empty, buffer.DangerousGetHandle(), ref inCredSize);
return(buffer);
}
private static SafeNativeMemory PackAuthenticationBuffer(NetworkCredential credential)
{
var userName = credential.Maybe().Return(c => c.UserName);
if (string.IsNullOrEmpty(userName))
return new SafeNativeMemory();
var inCredSize = 0;
NativeMethods.CredPackAuthenticationBuffer(0, userName, string.Empty, IntPtr.Zero, ref inCredSize);
var buffer = new SafeNativeMemory(inCredSize);
NativeMethods.CredPackAuthenticationBuffer(0, userName, string.Empty, buffer.DangerousGetHandle(), ref inCredSize);
return buffer;
}
private static NetworkCredential PromptForCredential([NotNull] IWin32Window parent, [CanBeNull] string caption, [CanBeNull] string message, int authenticationError, [NotNull] SafeNativeMemory inCredBuffer)
{
Contract.Requires(parent != null);
Contract.Requires(inCredBuffer != null);
var save = true;
uint authPackage = 0;
var credui = new CREDUI_INFO
{
cbSize = Marshal.SizeOf(typeof(CREDUI_INFO)),
pszCaptionText = caption,
pszMessageText = message,
hwndParent = parent.Handle
};
if (0 != NativeMethods.CredUIPromptForWindowsCredentials(ref credui, authenticationError, ref authPackage, inCredBuffer.DangerousGetHandle(), inCredBuffer.Size, out var outCredBufferPtr, out int outCredSize, ref save, 0))
{
return(null);
}
using (var outCredBuffer = new SafeNativeMemory(outCredBufferPtr, outCredSize))
{
return(UnpackAuthenticationBuffer(outCredBuffer));
}
}
public static bool GetTokenInformation(SafeTokenHandle hToken, TOKEN_INFORMATION_CLASS tokenInfoClass, SafeNativeMemory pTokenInfo)
{
return(GetTokenInformation(hToken, tokenInfoClass, pTokenInfo.DangerousGetHandle(), pTokenInfo.Size, out _));
}
private static NetworkCredential?PromptForCredential(IntPtr parentHandle, string?caption, string?message, int authenticationError, SafeNativeMemory inCredBuffer)
{
var save = true;
uint authPackage = 0;
var credui = new CREDUI_INFO
{
cbSize = Marshal.SizeOf(typeof(CREDUI_INFO)),
pszCaptionText = caption,
pszMessageText = message,
hwndParent = parentHandle
};
if (0 != NativeMethods.CredUIPromptForWindowsCredentials(ref credui, authenticationError, ref authPackage, inCredBuffer.DangerousGetHandle(), inCredBuffer.Size, out var outCredBufferPtr, out int outCredSize, ref save, 0))
{
return(null);
}
using var outCredBuffer = new SafeNativeMemory(outCredBufferPtr, outCredSize);
return(UnpackAuthenticationBuffer(outCredBuffer));
}
