RodrigoPereyraDiaz/aspnet-authentication-simpletoken

Middleware that allows to extract token from authenticated requests, delegate it to an appropriated ISecurityTokenValidator and generate and AuthenticationTicket.

SimpleToken Authentication Middleware

This package allows to extract token from authenticated requests and delegate it to an appropriated ISecurityTokenValidator and generate and AuthenticationTicket.

Behavior

Token extraction details

This middleware tries to support almost RFC 6750 and some licenses based on GitHub behavior. But does not support Form-Encoded Body Parameter (http://tools.ietf.org/html/rfc6750#section-2.2).

There are three methods of sending tokens:

• Authorization Request Header Field.

  See RFC6750 Section 2.1

  For example:

   GET /resource HTTP/1.1
   Host: server.example.com
   Authorization: Bearer mF_9.B5f-4.1JqM
  

  It accepts Bearer schema name, but also OAuth2 and Token.

• URI Query Parameter

  See RFC6750 Section 2.1

  For example https://server.example.com/resource?access_token=mF_9.B5f-4.1JqM&p=q:

   GET /resource?access_token=mF_9.B5f-4.1JqM HTTP/1.1
   Host: server.example.com
  

• Basic Authentication with any username and token

  See GitHub Basic Authentication Via OAuth Tokens

  For example:

   $ curl -u user:317F632427BCDA059B19EF241705BD2F https://server.example.com/resource
  

  Or

   GET /resource
   Host: server.example.com
   Authorization: basic dXNlcjozMTdGNjMyNDI3QkNEQTA1OUIxOUVGMjQxNzA1QkQyRg==
  

The WWW-Authenticate Response Header Field

When a protected resource is requested but request does not include authentication credentials or does not contain an access token that enables access it includes the HTTP "WWW-Authenticate" response header field.

For example:

• Request:

  GET /resource
  Host: server.example.com
  

• Response

  Status Code: 401 Unauthorized
  Content-Length: 436
  Content-Type: application/json; charset=utf-8
  Date: Fri, 11 Sep 2015 16:41:50 GMT
  WWW-Authenticate: Bearer
  

Usage

It is necessary to register all valid ISecurityTokenValidator classes and add the middleware to ApplicationBuilder using UseSimpleTokenAuthentication.

Example:

public class Startup
{
	public void ConfigureServices(IServiceCollection services)
	{
		services.AddMvc();
		services.AddTransient<ISecurityTokenValidator, MyCustomTokenValidator>();
	}

    public void Configure(IApplicationBuilder app)
	{
		app.UseSimpleTokenAuthentication(o =>
		{
			o.AutomaticAuthentication = true;
		});
		app.UseMvc();
	}
}

Internally, when the token is not valid or there are not any registered any capable ISecurityTokenValidator, an AuthenticationException is thrown.