Ensure HTTP Digest auth uses appropriate HTTP method [#2490 state:resolved] [Steve Madsen]

actionpack/lib/action_controller/base/http_authentication.rb

@@ -194,9 +194,10 @@ def validate_digest_response(request, realm, &password_procedure)
 
         if valid_nonce && realm == credentials[:realm] && opaque == credentials[:opaque]
           password = password_procedure.call(credentials[:username])
+          method = request.env['rack.methodoverride.original_method'] || request.env['REQUEST_METHOD']
 
          [true, false].any? do |password_is_ha1|
-           expected = expected_response(request.env['REQUEST_METHOD'], request.env['REQUEST_URI'], credentials, password, password_is_ha1)
+           expected = expected_response(method, request.env['REQUEST_URI'], credentials, password, password_is_ha1)
            expected == credentials[:response]
          end
         end

actionpack/test/controller/http_digest_authentication_test.rb

@@ -149,6 +149,16 @@ def authenticate_with_request
     assert_equal 'Definitely Maybe', @response.body
   end
 
+  test "authentication request with _method" do
+    @request.env['HTTP_AUTHORIZATION'] = encode_credentials(:username => 'pretty', :password => 'please', :method => :post)
+    @request.env['rack.methodoverride.original_method'] = 'POST'
+    put :display
+
+    assert_response :success
+    assert assigns(:logged_in)
+    assert_equal 'Definitely Maybe', @response.body
+  end
+
   private
 
   def encode_credentials(options)
@@ -159,15 +169,22 @@ def encode_credentials(options)
     # to prevent tampering of timestamp
     ActionController::Base.session_options[:secret] = "session_options_secret"
 
-    # Perform unauthenticated GET to retrieve digest parameters to use on subsequent request
-    get :index
+    # Perform unauthenticated request to retrieve digest parameters to use on subsequent request
+    method = options.delete(:method) || 'GET'
+
+    case method.to_s.upcase
+    when 'GET'
+      get :index
+    when 'POST'
+      post :index
+    end
 
     assert_response :unauthorized
 
     credentials = decode_credentials(@response.headers['WWW-Authenticate'])
     credentials.merge!(options)
     credentials.reverse_merge!(:uri => "#{@request.env['REQUEST_URI']}")
-    ActionController::HttpAuthentication::Digest.encode_credentials("GET", credentials, password, options[:password_is_ha1])
+    ActionController::HttpAuthentication::Digest.encode_credentials(method, credentials, password, options[:password_is_ha1])
   end
 
   def decode_credentials(header)