public bool TryCreateDeviceAuthChallengeResponseAsync(HttpResponseHeaders responseHeaders, Uri endpointUri, out string responseHeader)
{
responseHeader = string.Empty;
string authHeaderTemplate = "PKeyAuth {0}, Context=\"{1}\", Version=\"{2}\"";
X509Certificate2 certificate = null;
if (!DeviceAuthHelper.IsDeviceAuthChallenge(responseHeaders))
{
return(false);
}
if (!DeviceAuthHelper.CanOSPerformPKeyAuth())
{
responseHeader = DeviceAuthHelper.GetBypassChallengeResponse(responseHeaders);
return(true);
}
IDictionary <string, string> challengeData = DeviceAuthHelper.ParseChallengeData(responseHeaders);
if (!challengeData.ContainsKey("SubmitUrl"))
{
challengeData["SubmitUrl"] = endpointUri.AbsoluteUri;
}
try
{
certificate = FindCertificate(challengeData);
}
catch (MsalException ex)
{
if (ex.ErrorCode == MsalError.DeviceCertificateNotFound)
{
responseHeader = DeviceAuthHelper.GetBypassChallengeResponse(responseHeaders);
return(true);
}
}
DeviceAuthJWTResponse responseJWT = new DeviceAuthJWTResponse(challengeData["SubmitUrl"],
challengeData["nonce"], Convert.ToBase64String(certificate.GetRawCertData()));
CngKey key = NetDesktopCryptographyManager.GetCngPrivateKey(certificate);
byte[] sig = null;
using (Native.RSACng rsa = new Native.RSACng(key))
{
rsa.SignatureHashAlgorithm = CngAlgorithm.Sha256;
sig = rsa.SignData(responseJWT.GetResponseToSign().ToByteArray());
}
string signedJwt = string.Format(CultureInfo.InvariantCulture, "{0}.{1}", responseJWT.GetResponseToSign(),
Base64UrlHelpers.Encode(sig));
string authToken = string.Format(CultureInfo.InvariantCulture, " AuthToken=\"{0}\"", signedJwt);
responseHeader = string.Format(CultureInfo.InvariantCulture, authHeaderTemplate, authToken,
challengeData["Context"],
challengeData["Version"]);
return(true);
}
public bool TryCreateDeviceAuthChallengeResponseAsync(HttpResponseHeaders headers, Uri endpointUri, out string responseHeader)
{
responseHeader = string.Empty;
Certificate certificate = null;
string authHeaderTemplate = "PKeyAuth {0}, Context=\"{1}\", Version=\"{2}\"";
if (!DeviceAuthHelper.IsDeviceAuthChallenge(headers))
{
return(false);
}
if (!DeviceAuthHelper.CanOSPerformPKeyAuth())
{
responseHeader = DeviceAuthHelper.GetBypassChallengeResponse(headers);
return(false);
}
IDictionary <string, string> challengeData = DeviceAuthHelper.ParseChallengeData(headers);
if (!challengeData.ContainsKey("SubmitUrl"))
{
challengeData["SubmitUrl"] = endpointUri.AbsoluteUri;
}
try
{
certificate = Task.FromResult(FindCertificateAsync(challengeData)).Result.Result;
}
catch (MsalException ex)
{
if (ex.ErrorCode == MsalError.DeviceCertificateNotFound)
{
responseHeader = DeviceAuthHelper.GetBypassChallengeResponse(headers);
return(true);
}
}
DeviceAuthJWTResponse responseJWT = new DeviceAuthJWTResponse(challengeData["SubmitUrl"],
challengeData["nonce"], Convert.ToBase64String(certificate.GetCertificateBlob().ToArray()));
IBuffer input = CryptographicBuffer.ConvertStringToBinary(responseJWT.GetResponseToSign(),
BinaryStringEncoding.Utf8);
CryptographicKey keyPair =
Task.FromResult(PersistedKeyProvider.OpenKeyPairFromCertificateAsync(certificate, HashAlgorithmNames.Sha256, CryptographicPadding.RsaPkcs1V15)).Result.GetResults();
IBuffer signed = Task.FromResult(CryptographicEngine.SignAsync(keyPair, input)).Result.GetResults();
string signedJwt = string.Format(CultureInfo.InvariantCulture, "{0}.{1}", responseJWT.GetResponseToSign(),
Base64UrlHelpers.Encode(signed.ToArray()));
string authToken = string.Format(CultureInfo.InvariantCulture, " AuthToken=\"{0}\"", signedJwt);
responseHeader = string.Format(CultureInfo.InvariantCulture, authHeaderTemplate, authToken, challengeData["Context"], challengeData["Version"]);
return(true);
}
public void GetDeviceAuthBypassChallengeResponse()
{
//Arrange
Dictionary <string, string> pKeyAuthHeaders = new Dictionary <string, string>();
pKeyAuthHeaders.Add("Context", "context");
pKeyAuthHeaders.Add("Version", "1.0");
//Act
var result1 = DeviceAuthHelper.GetBypassChallengeResponse(s_httpResponse.Headers);
var result2 = DeviceAuthHelper.GetBypassChallengeResponse(pKeyAuthHeaders);
//Assert
Assert.AreEqual(result1, TestConstants.PKeyAuthResponse);
Assert.AreEqual(result2, TestConstants.PKeyAuthResponse);
}
void DecidePolicyForNavigation(WebView webView, NSDictionary actionInformation, NSUrlRequest request, WebFrame frame, NSObject decisionToken)
{
if (request == null)
{
WebView.DecideUse(decisionToken);
return;
}
string requestUrlString = request.Url.ToString();
if (requestUrlString.StartsWith(BrokerConstants.BrowserExtPrefix, StringComparison.OrdinalIgnoreCase))
{
var result = AuthorizationResult.FromStatus(
AuthorizationStatus.ProtocolError,
"Unsupported request",
"Server is redirecting client to browser. This behavior is not yet defined on Mac OS X.");
_callbackMethod(result);
WebView.DecideIgnore(decisionToken);
Close();
return;
}
if (requestUrlString.ToLower(CultureInfo.InvariantCulture).StartsWith(_callback.ToLower(CultureInfo.InvariantCulture), StringComparison.OrdinalIgnoreCase) ||
requestUrlString.StartsWith(BrokerConstants.BrowserExtInstallPrefix, StringComparison.OrdinalIgnoreCase))
{
_callbackMethod(AuthorizationResult.FromUri(request.Url.ToString()));
WebView.DecideIgnore(decisionToken);
Close();
return;
}
if (requestUrlString.StartsWith(BrokerConstants.DeviceAuthChallengeRedirect, StringComparison.CurrentCultureIgnoreCase))
{
var uri = new Uri(requestUrlString);
string query = uri.Query;
if (query.StartsWith("?", StringComparison.OrdinalIgnoreCase))
{
query = query.Substring(1);
}
Dictionary <string, string> keyPair = CoreHelpers.ParseKeyValueList(query, '&', true, false, null);
string responseHeader = DeviceAuthHelper.GetBypassChallengeResponse(keyPair);
var newRequest = (NSMutableUrlRequest)request.MutableCopy();
newRequest.Url = new NSUrl(keyPair["SubmitUrl"]);
newRequest[BrokerConstants.ChallengeResponseHeader] = responseHeader;
webView.MainFrame.LoadRequest(newRequest);
WebView.DecideIgnore(decisionToken);
return;
}
if (!request.Url.AbsoluteString.Equals("about:blank", StringComparison.CurrentCultureIgnoreCase) &&
!request.Url.Scheme.Equals("https", StringComparison.CurrentCultureIgnoreCase))
{
var result = AuthorizationResult.FromStatus(
AuthorizationStatus.ErrorHttp,
MsalError.NonHttpsRedirectNotSupported,
MsalErrorMessage.NonHttpsRedirectNotSupported);
_callbackMethod(result);
WebView.DecideIgnore(decisionToken);
Close();
}
WebView.DecideUse(decisionToken);
}
