Adds strategy parameter with the strategy name in the failure end point redirect callback.

lib/omniauth/failure_endpoint.rb

@@ -22,15 +22,20 @@ module OmniAuth
     end
 
     def raise_out!
-      raise env['omniauth.error'] || OmniAuth::Error.new(env['omniauth.error.type']) 
+      raise env['omniauth.error'] || OmniAuth::Error.new(env['omniauth.error.type'])
     end
 
     def redirect_to_failure
       message_key = env['omniauth.error.type']
-      new_path = "#{env['SCRIPT_NAME']}#{OmniAuth.config.path_prefix}/failure?message=#{message_key}#{origin_query_param}"
+      new_path = "#{env['SCRIPT_NAME']}#{OmniAuth.config.path_prefix}/failure?message=#{message_key}#{origin_query_param}#{strategy_name_query_param}"
       Rack::Response.new(["302 Moved"], 302, 'Location' => new_path).finish
     end
 
+    def strategy_name_query_param
+      return "" unless env['omniauth.error.strategy']
+      "&strategy=#{env['omniauth.error.strategy'].name}"
+    end
+
     def origin_query_param
       return "" unless env['omniauth.origin']
       "&origin=#{CGI.escape(env['omniauth.origin'])}"

spec/omniauth/failure_endpoint_spec.rb

@@ -4,7 +4,7 @@ describe OmniAuth::FailureEndpoint do
   subject{ OmniAuth::FailureEndpoint }
 
   context 'development' do
-    before do 
+    before do
       @rack_env = ENV['RACK_ENV']
       ENV['RACK_ENV'] = 'development'
     end
@@ -24,8 +24,9 @@ describe OmniAuth::FailureEndpoint do
   end
 
   context 'non-development' do
-    let(:env){ {'omniauth.error.type' => 'invalid_request'} }
-    
+    let(:env){ {'omniauth.error.type' => 'invalid_request',
+                'omniauth.error.strategy' => ExampleStrategy.new({}) } }
+
     it 'should be a redirect' do
       status, head, body = *subject.call(env)
       status.should == 302
@@ -33,13 +34,13 @@ describe OmniAuth::FailureEndpoint do
 
     it 'should include the SCRIPT_NAME' do
       status, head, body = *subject.call(env.merge('SCRIPT_NAME' => '/random'))
-      head['Location'].should == '/random/auth/failure?message=invalid_request'
+      head['Location'].should == '/random/auth/failure?message=invalid_request&strategy=test'
     end
 
     it 'should respect configured path prefix' do
       OmniAuth.config.stub(:path_prefix => '/boo')
       status, head, body = *subject.call(env)
-      head["Location"].should == '/boo/failure?message=invalid_request'
+      head["Location"].should == '/boo/failure?message=invalid_request&strategy=test'
     end
 
     it 'should include the origin (escaped) if one is provided' do

spec/omniauth/strategy_spec.rb

@@ -1,23 +1,4 @@
-require File.expand_path('../../spec_helper', __FILE__)
-
-class ExampleStrategy
-  include OmniAuth::Strategy
-  option :name, 'test'
-  def call(env); self.call!(env) end
-  attr_reader :last_env
-  def request_phase
-    @fail = fail!(options[:failure]) if options[:failure]
-    @last_env = env
-    return @fail if @fail
-    raise "Request Phase"
-  end
-  def callback_phase
-    @fail = fail!(options[:failure]) if options[:failure]
-    @last_env = env
-    return @fail if @fail
-    raise "Callback Phase"
-  end
-end
+require 'spec_helper'
 
 def make_env(path = '/auth/test', props = {})
   {
@@ -637,4 +618,4 @@ describe OmniAuth::Strategy do
       OmniAuth.config.test_mode = false
     end
   end
-end
+end

spec/spec_helper.rb

@@ -13,3 +13,21 @@ RSpec.configure do |config|
   config.extend  OmniAuth::Test::StrategyMacros, :type => :strategy
 end
 
+class ExampleStrategy
+  include OmniAuth::Strategy
+  option :name, 'test'
+  def call(env); self.call!(env) end
+  attr_reader :last_env
+  def request_phase
+    @fail = fail!(options[:failure]) if options[:failure]
+    @last_env = env
+    return @fail if @fail
+    raise "Request Phase"
+  end
+  def callback_phase
+    @fail = fail!(options[:failure]) if options[:failure]
+    @last_env = env
+    return @fail if @fail
+    raise "Callback Phase"
+  end
+end