Question: Register custom middleware for authentication

[micfan]

I am trying to use Middleware::Auth::Base to add my own strategies by Grape::Middleware::Auth::Strategies.add(), but this line returned the rack response [400, foo, bar].

The two file like this:

require 'rack/auth/abstract/handler'
require 'rack/auth/abstract/request'
require 'grape/middleware/auth/base'

# Rack::Auth::Basic implements HTTP Basic Authentication, as per RFC 2617.
#
# Initialize with the Rack application that you want protecting,
# and a block that checks if a username and password pair are valid.
#
# See also: <tt>example/protectedlobster.rb</tt>

class OAuthMiddleware < Rack::Auth::AbstractHandler

  def call(env)
    oauth = OAuthMiddleware::Request.new(env)

    return unauthorized unless oauth.provided?

    return bad_request unless oauth.basic?

    if valid?(oauth)
      env['REMOTE_USER'] = oauth.username

      return @app.call(env)
    end

    unauthorized
  end


  private

  def challenge
    'Basic realm="%s"' % realm
  end

  def valid?(auth)
    @authenticator.call(*auth.credentials)
  end

  class Request < Rack::Auth::AbstractRequest
    def basic?
      "OAuth.Github".downcase == scheme
    end

    def credentials
      @credentials ||= params.unpack("m*").first.split(/:/, 2)
    end

    def username
      @credentials.first
    end
  end

end

  class MyAPI < Grape::API

    Grape::Middleware::Auth::Strategies.add(
        :github_oauth,
        OAuthMiddleware,
        ->(options) {
          [options[:realm]]
        }
    )

    auth :github_oauth, { realm: 'OAuth.Github',
                          # type: :github_oauth
    } do |username, access_token|
      # lookup the user's password here
      puts username
      puts access_token
      # { 'hello' => 'world' }[username]
      true
    end
  end

Where is the error? Is there any demo or more detailed docs than this README?

[dblock]

Looks like an exception was raised inside the call, then handled. Maybe build a smaller project without the whole oauth thing that demonstrates the problem?

[micfan]

need more report on this issue