Revert "Gracefully handle Google OAuth failures from Maker App"

dashboard/app/controllers/maker_controller.rb

@@ -122,24 +122,17 @@ def login_code
   # renders a page for users to copy and paste a login key
   def display_code
     # Generate encrypted code to display to user
-    user_auth = current_user&.authentication_options&.find_by_credential_type(AuthenticationOption::GOOGLE)
-    if user_auth
-      @secret_code = Encryption.encrypt_string_utf8(
-        Time.now.strftime('%Y%m%dT%H%M%S%z') + user_auth.authentication_id + user_auth.credential_type
-      )
-    end
+    user_auth = current_user.authentication_options.find_by_credential_type(AuthenticationOption::GOOGLE)
+    @secret_code = Encryption.encrypt_string_utf8(
+      Time.now.strftime('%Y%m%dT%H%M%S%z') + user_auth['authentication_id'] + user_auth['credential_type']
+    )
   end
 
   # GET /maker/confirm_login
-  # @param [String] params[:user_return_to] Where to redirect the user after they've logged in
   # Renders a page to confirm uses want to login via Google OAuth
   # This route is need to convert the GET request from the Maker App into
   # a POST that can be used to login via Google OAuth
   def confirm_login
-    session[:user_return_to] = params[:user_return_to]
-    if current_user
-      redirect_to session[:user_return_to]
-    end
   end
 
   # POST /maker/complete

dashboard/app/controllers/omniauth_callbacks_controller.rb

@@ -67,8 +67,6 @@ def google_oauth2
 
     if user
       sign_in_google_oauth2 user
-    elsif session[:user_return_to] == maker_display_google_oauth_code_path
-      redirect_to session[:user_return_to]
     else
       sign_up_google_oauth2
     end

dashboard/app/controllers/sessions_controller.rb

@@ -8,8 +8,6 @@ class SessionsController < Devise::SessionsController
   def new
     session[:user_return_to] ||= params[:user_return_to]
     if params[:maker]
-      # Deprecated: this was used by an earlier version of the maker app for google auth.
-      # Later versions send users directly to maker_google_oauth_confirm_login_path
       redirect_to maker_google_oauth_confirm_login_path
       return
     end

dashboard/app/views/maker/display_code.html.haml

@@ -1,16 +1,14 @@
 %h1= I18n.t('maker.google_oauth.login_with_google')
-- if @secret_code
-  %p= I18n.t('maker.google_oauth.copy_code')
 
-  = text_field_tag :maker_code, @secret_code, readonly: true
-  = button_tag I18n.t(:copy), id: "btn-copy"
+%p= I18n.t('maker.google_oauth.copy_code')
 
-  :javascript
-    $(document).ready(function() {
-      $('#btn-copy').click(function() {
-        $('#maker_code').select();
-        document.execCommand("copy");
-      });
+= text_field_tag :maker_code, @secret_code, readonly: true
+= button_tag I18n.t(:copy), id: "btn-copy"
+
+:javascript
+  $(document).ready(function() {
+    $('#btn-copy').click(function() {
+      $('#maker_code').select();
+      document.execCommand("copy");
     });
-- else
-  %p= I18n.t('maker.google_oauth.error_no_linked_google')
+  });

dashboard/config/locales/en.yml

@@ -1156,7 +1156,6 @@ en:
       copy_code: 'Please copy and paste this code into the Maker App to login to Code.org.'
       error_token_expired: 'Token has expired. Please log in again for a new token.'
       error_wrong_provider: 'Wrong provider. Please make sure you are logging in with Google.'
-      error_no_linked_google: 'Please go back to the Maker App and use the "Sign in" button in the top right to log in or click the back button to log in with a different Google account'
       error_invalid_user: 'Invalid user id. Please try logging in again.'
       error_no_code: 'Please enter your login code.'
       confirm_login: 'Select "Confirm" to log in with your Google account.'

dashboard/test/controllers/maker_controller_test.rb

@@ -473,54 +473,6 @@ class MakerControllerTest < ActionController::TestCase
     assert_equal 1, CircuitPlaygroundDiscountApplication.where(user_id: @teacher.id).length
   end
 
-  test "confirm_login redirects to maker_display_google_oauth_code_path when a google user is signed in" do
-    @student = create :student, :google_sso_provider
-    CDO.stubs(:properties_encryption_key).returns(SecureRandom.base64(Encryption::KEY_LENGTH / 8))
-    sign_in @student
-
-    get :confirm_login, params: {user_return_to: '/maker/display_google_oauth_code'}
-    assert_redirected_to '/maker/display_google_oauth_code'
-  end
-
-  test "confirm_login redirects to maker_display_google_oauth_code_path when a non google user is signed in" do
-    sign_in @student
-
-    get :confirm_login, params: {user_return_to: '/maker/display_google_oauth_code'}
-
-    assert_redirected_to '/maker/display_google_oauth_code'
-  end
-
-  test "confirm_login does not redirect when no user is signed in" do
-    get :confirm_login, params: {user_return_to: '/maker/display_google_oauth_code'}
-    assert_response :success
-    assert_template :confirm_login
-  end
-
-  test "display_code shows a code when a google user is signed in" do
-    @student = create :student, :google_sso_provider
-    CDO.stubs(:properties_encryption_key).returns(SecureRandom.base64(Encryption::KEY_LENGTH / 8))
-    sign_in @student
-    get :display_code
-    assert_response :success
-    assert_select '#btn-copy'
-    assert_select '#maker_code' do
-      assert_select ":match('value', ?)", /.+/
-    end
-  end
-
-  test "display_code does not show a code when a non google user is signed in" do
-    sign_in @student
-    get :display_code
-    assert_response :success
-    assert_select '#btn-copy', false
-  end
-
-  test "display_code does not show a code when no user is signed in" do
-    get :display_code
-    assert_response :success
-    assert_select '#btn-copy', false
-  end
-
   private
 
   def ensure_script(script_name, version_year, is_stable=true)

dashboard/test/controllers/omniauth_callbacks_controller_test.rb

@@ -786,49 +786,6 @@ class OmniauthCallbacksControllerTest < ActionController::TestCase
     assert_equal auth[:credentials][:refresh_token], partial_user.oauth_refresh_token
   end
 
-  test 'google_oauth2: on successful google login, it redirects to user_return_to if it is present' do
-    # Given I have a Google-Code.org account
-    user = create :student, :google_sso_provider
-
-    # When I hit the google oauth callback
-    auth = generate_auth_user_hash \
-      provider: AuthenticationOption::GOOGLE,
-      uid: user.primary_contact_info.authentication_id
-    @request.env['omniauth.auth'] = auth
-    @request.env['omniauth.params'] = {}
-    session[:user_return_to] = "/maker/display_google_oauth_code"
-    CDO.stubs(:properties_encryption_key).returns("thisisafakekeyyyyyyyyyyyyyyyyyyyyy")
-    assert_does_not_create(User) do
-      get :google_oauth2
-    end
-
-    # Then I am signed in
-    user.reload
-    assert_equal user.id, signed_in_user_id
-    # Then I go to the display google oauth page to get my code
-    assert_redirected_to 'http://test.host/maker/display_google_oauth_code'
-  end
-
-  test 'google_oauth2: redirects to maker/display_google_oauth_code if present as user_return_to on unsuccessful google login' do
-    # Given I do not have a Code.org account
-    uid = "nonexistent-google-oauth2"
-
-    # When I hit the google oauth callback
-    auth = generate_auth_user_hash \
-      provider: AuthenticationOption::GOOGLE,
-      uid: uid,
-      user_type: '' # Google doesn't provider user_type
-    @request.env['omniauth.auth'] = auth
-    @request.env['omniauth.params'] = {}
-    session[:user_return_to] = "/maker/display_google_oauth_code"
-    assert_does_not_create(User) do
-      get :google_oauth2
-    end
-
-    # Then I go to the display google oauth page to see an error message
-    assert_redirected_to 'http://test.host/maker/display_google_oauth_code'
-  end
-
   test 'login: google_oauth2 silently takes over unmigrated student with matching email' do
     email = 'test@foo.xyz'
     uid = '654321'