private static bool TryProcessResult(IBasicAuthenticationResult result,
IDictionary <string, object> environment, out int errorStatusCode, out string errorMessage)
{
IBasicAuthenticationError error;
if (result != null)
{
error = result.ErrorResult;
if (error != null)
{
errorStatusCode = (int)error.StatusCode;
errorMessage = error.Message;
return(false);
}
else if (error == null && result.Principal != null)
{
environment["server.User"] = result.Principal;
}
}
else
{
error = null;
}
errorStatusCode = 0;
errorMessage = null;
return(true);
}
/// <summary></summary>
/// <param name="environment"></param>
/// <returns></returns>
public async Task Invoke(IDictionary <string, object> environment)
{
OwinRequest request = new OwinRequest(environment);
OwinResponse response = new OwinResponse(environment);
CancellationToken cancellationToken = request.CallCancelled;
AuthenticationHeaderValue authorization;
string authorizationHeaderError;
if (!TryParseAuthorizationHeader(request, out authorization, out authorizationHeaderError))
{
response.StatusCode = 400;
cancellationToken.ThrowIfCancellationRequested();
await WriteMessage(authorizationHeaderError, response, cancellationToken);
return;
}
cancellationToken.ThrowIfCancellationRequested();
IBasicAuthenticationResult result = await AuthenticateAsync(authorization, cancellationToken);
int errorStatusCode;
string errorMessage;
if (!TryProcessResult(result, environment, out errorStatusCode, out errorMessage))
{
response.StatusCode = errorStatusCode;
cancellationToken.ThrowIfCancellationRequested();
await AddChallengeOnUnauthorizedAsync(response, cancellationToken);
cancellationToken.ThrowIfCancellationRequested();
await WriteMessage(errorMessage, response, cancellationToken);
return;
}
cancellationToken.ThrowIfCancellationRequested();
AuthenticationHeaderValue challenge = await _protocol.CreateChallengeAsync(cancellationToken);
if (!TryRegisterOnSendingHeaders(challenge, request, response, out errorMessage))
{
response.StatusCode = 500;
cancellationToken.ThrowIfCancellationRequested();
await WriteMessage(errorMessage, response, cancellationToken);
return;
}
cancellationToken.ThrowIfCancellationRequested();
await _next(environment);
}
private static bool TryProcessResult(IBasicAuthenticationResult result,
IDictionary<string, object> environment, out int errorStatusCode, out string errorMessage)
{
IBasicAuthenticationError error;
if (result != null)
{
error = result.ErrorResult;
if (error != null)
{
errorStatusCode = (int)error.StatusCode;
errorMessage = error.Message;
return false;
}
else if (error == null && result.Principal != null)
{
environment["server.User"] = result.Principal;
}
}
else
{
error = null;
}
errorStatusCode = 0;
errorMessage = null;
return true;
}
