CODEWITHSUNDEEP
c#.netwcfrestrestful-authentication
user131441
user131441

Reputation:

C# WCF -- Custom Error on Authorization Fail via a custom AuthorizationManager

I am currenlty working on implementing a custom WCF OpenAuth AuthenticationManager and I have successfully done so. My problem now however, is the response pages when the user fails to authenticate. I would like for the user to receive a JSON-formatted message with a 401 (Unauthorized) response-status code. However, I get a generic, 400-error response as such:

HTTP/1.1 400 Bad Request
Server: ASP.NET Development Server/10.0.0.0
Date: Mon, 20 Jun 2011 17:29:31 GMT
X-AspNet-Version: 4.0.30319
Content-Length: 1765
Cache-Control: private
Content-Type: text/html
Connection: Close

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
  <head>
    <title>Request Error</title>
    <style>BODY { color: #000000; background-color: white; font-family: Verdana; margin-left: 0px; margin-top: 0px; } #content { margin-left: 30px; font-size: .70em; padding-bottom: 2em; } A:link { color: #336699; font-weight: bold; text-decoration: underline; } A:visited { color: #6699cc; font-weight: bold; text-decoration: underline; } A:active { color: #336699; font-weight: bold; text-decoration: underline; } .heading1 { background-color: #003366; border-bottom: #336699 6px solid; color: #ffffff; font-family: Tahoma; font-size: 26px; font-weight: normal;margin: 0em 0em 10px -20px; padding-bottom: 8px; padding-left: 30px;padding-top: 16px;} pre { font-size:small; background-color: #e5e5cc; padding: 5px; font-family: Courier New; margin-top: 0px; border: 1px #f0f0e0 solid; white-space: pre-wrap; white-space: -pre-wrap; word-wrap: break-word; } table { border-collapse: collapse; border-spacing: 0px; font-family: Verdana;} table th { border-right: 2px white solid; border-bottom: 2px white solid; font-weight: bold; background-color: #cecf9c;} table td { border-right: 2px white solid; border-bottom: 2px white solid; background-color: #e5e5cc;}</style>
  </head>
  <body>
    <div id="content">
      <p class="heading1">Request Error</p>
      <p xmlns="">The server encountered an error processing the request. Please see the <a rel="help-page" href="http://localhost:2947/user/help">service help page</a> for constructing valid requests to the service.</p>
    </div>
  </body>
</html>

I'd really like to get something more like the following:

HTTP/1.1 200 OK
Server: ASP.NET Development Server/10.0.0.0
Date: Mon, 20 Jun 2011 15:35:12 GMT
X-AspNet-Version: 4.0.30319
Content-Length: 265
Cache-Control: private
Content-Type: application/json; charset=utf-8
Connection: Close

{"result":{"error":"Unable to authenticate using provided OAuth credentials"}}

I am implementing my auth-service by extending the ServiceAuthorizationManager and creating a custom WebServiceHostFactory that injects my auth-manager.

Any help is greatly appreciated!

Upvotes: 2

Views: 2524

Answers (1)

user131441
user131441

Reputation:

So I figured this out on my own. I followed the guide at MSDN. It is fairly straight forward and guides you through the necessary steps to adding the IErrorHandler extension-service to you WCF service. I also referenced another stack overflow post for how to return my errors specifically in a JSON format. If anyone has any questions on this, I'll be glad to help because this was another painful reminder that you CAN have too much abstraction. :p

Upvotes: 3

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