Do not fill passwords on passwords.google.com authentication form

Bug: 747828
Change-Id: I1d531f2288017b64b6c43f43f855c02e6ad74732
Reviewed-on: https://chromium-review.googlesource.com/588790Reviewed-by: Vasilii Sukhanov <vasilii@chromium.org>
Commit-Queue: Vadym Doroshenko <dvadym@chromium.org>
Cr-Commit-Position: refs/heads/master@{#490769}

chrome/renderer/autofill/password_autofill_agent_browsertest.cc

@@ -3028,4 +3028,33 @@ TEST_F(PasswordAutofillAgentTest, NoForm_MultipleAJAXEventsWithoutSubmission) {
   ASSERT_FALSE(static_cast<bool>(fake_driver_.password_form_submitted()));
 }
 
+// Tests that information about Gaia reauthentication form is not sent to the
+// browser, nor on load nor on user click.
+TEST_F(PasswordAutofillAgentTest, GaiaReauthenticationFormIgnored) {
+  // HTML is already loaded in test SetUp method, so information about password
+  // forms was already sent to the |fake_drive_|. Hence it should be reset.
+  fake_driver_.reset_password_forms_calls();
+
+  const char kGaiaReauthenticationFormHTML[] =
+      "<FORM id='ReauthenticationForm'>"
+      "  <INPUT type='hidden' name='continue' "
+      "value='https://passwords.google.com/'>"
+      "  <INPUT type='hidden' name='rart'>"
+      "  <INPUT type='password' id='password'/>"
+      "  <INPUT type='submit' value='Login'/>"
+      "</FORM>";
+
+  LoadHTMLWithUrlOverride(kGaiaReauthenticationFormHTML,
+                          "https://accounts.google.com");
+  UpdateOnlyPasswordElement();
+
+  // Simulate a user clicking on the password element.
+  static_cast<PageClickListener*>(autofill_agent_)
+      ->FormControlElementClicked(password_element_, false);
+
+  // Check that no information about Gaia reauthentication is not sent.
+  EXPECT_FALSE(fake_driver_.called_password_forms_parsed());
+  EXPECT_FALSE(fake_driver_.called_password_forms_rendered());
+}
+
 }  // namespace autofill

components/autofill/content/renderer/password_autofill_agent.cc

@@ -1201,6 +1201,11 @@ void PasswordAutofillAgent::SendPasswordForms(bool only_visible) {
 
   std::vector<PasswordForm> password_forms;
   for (const blink::WebFormElement& form : forms) {
+    if (IsGaiaReauthenticationForm(form)) {
+      // Bail if this is a GAIA passwords site reauthentication form, so that
+      // page will be ignored.
+      return;
+    }
     if (only_visible) {
       bool is_form_visible = form_util::AreFormContentsVisible(form);
       if (logger) {

components/autofill/content/renderer/password_form_conversion_utils.cc

@@ -306,8 +306,6 @@ void FindPredictedElements(
   }
 }
 
-// TODO(crbug.com/543085): Move the reauthentication recognition code to the
-// browser.
 const char kPasswordSiteUrlRegex[] =
     "passwords(?:-[a-z-]+\\.corp)?\\.google\\.com";
 
@@ -394,15 +392,6 @@ bool GetPasswordForm(
       last_text_input_before_password;
   autofill::PossibleUsernamesVector other_possible_usernames;
 
-  // Bail if this is a GAIA passwords site reauthentication form, so that
-  // the form will be ignored.
-  // TODO(msramek): Move this logic to the browser, and disable filling only
-  // for the sync credential and if passwords are being synced.
-  if (IsGaiaReauthenticationForm(GURL(form.document.Url()).GetOrigin(),
-                                 form.control_elements)) {
-    return false;
-  }
-
   std::map<WebInputElement, PasswordFormFieldPredictionType> predicted_elements;
   if (form_predictions) {
     FindPredictedElements(form, password_form->form_data, *form_predictions,
@@ -649,16 +638,19 @@ bool GetPasswordForm(
 
 }  // namespace
 
-bool IsGaiaReauthenticationForm(
-    const GURL& origin,
-    const std::vector<blink::WebFormControlElement>& control_elements) {
-  if (origin != GaiaUrls::GetInstance()->gaia_url().GetOrigin())
+bool IsGaiaReauthenticationForm(const blink::WebFormElement& form) {
+  if (GURL(form.GetDocument().Url()).GetOrigin() !=
+      GaiaUrls::GetInstance()->gaia_url().GetOrigin()) {
     return false;
+  }
 
   bool has_rart_field = false;
   bool has_continue_field = false;
 
-  for (const blink::WebFormControlElement& element : control_elements) {
+  blink::WebVector<blink::WebFormControlElement> web_control_elements;
+  form.GetFormControlElements(web_control_elements);
+
+  for (const blink::WebFormControlElement& element : web_control_elements) {
     // We're only interested in the presence
     // of <input type="hidden" /> elements.
     CR_DEFINE_STATIC_LOCAL(WebString, kHidden, ("hidden"));

components/autofill/content/renderer/password_form_conversion_utils.h

@@ -28,13 +28,8 @@ namespace autofill {
 
 struct PasswordForm;
 
-// Tests whether the given form is a GAIA reauthentication form. The form is
-// not passed directly as WebFormElement, but by specifying its |origin| and
-// |control_elements|. This is for better performance and easier testing.
-// TODO(msramek): Move this logic to the browser.
-bool IsGaiaReauthenticationForm(
-    const GURL& origin,
-    const std::vector<blink::WebFormControlElement>& control_elements);
+// Tests whether the given form is a GAIA reauthentication form.
+bool IsGaiaReauthenticationForm(const blink::WebFormElement& form);
 
 typedef std::map<
     const blink::WebFormControlElement,

components/autofill/content/renderer/password_form_conversion_utils_browsertest.cc

@@ -191,7 +191,7 @@ class MAYBE_PasswordFormConversionUtilsTest : public content::RenderViewTest {
       FormsPredictionsMap* predictions,
       bool with_user_input) {
     WebFormElement form;
-    LoadWebFormFromHTML(html, &form);
+    LoadWebFormFromHTML(html, &form, nullptr);
 
     WebVector<WebFormControlElement> control_elements;
     form.GetFormControlElements(control_elements);
@@ -218,7 +218,7 @@ class MAYBE_PasswordFormConversionUtilsTest : public content::RenderViewTest {
                       const std::map<int, PasswordFormFieldPredictionType>&
                           predictions_positions) {
     WebFormElement form;
-    LoadWebFormFromHTML(html, &form);
+    LoadWebFormFromHTML(html, &form, nullptr);
 
     FormData form_data;
     ASSERT_TRUE(form_util::WebFormElementToFormData(
@@ -239,7 +239,12 @@ class MAYBE_PasswordFormConversionUtilsTest : public content::RenderViewTest {
   }
 
   // Loads the given |html| and retrieves the sole WebFormElement from it.
-  void LoadWebFormFromHTML(const std::string& html, WebFormElement* form) {
+  void LoadWebFormFromHTML(const std::string& html,
+                           WebFormElement* form,
+                           const char* origin) {
+    if (origin)
+      LoadHTMLWithUrlOverride(html.c_str(), origin);
+    else
       LoadHTML(html.c_str());
 
     WebLocalFrame* frame = GetMainFrame();
@@ -1354,12 +1359,6 @@ TEST_F(MAYBE_PasswordFormConversionUtilsTest, IsGaiaReauthFormIgnored) {
        {TestCase::KeyValue("continue", "passwords.google.com:443"),
         TestCase::KeyValue("rart", "")},
        true},
-      // Encoded URL is considered the same.
-      {"https://accounts.google.com",
-       {TestCase::KeyValue("continue",
-                           "https://passwords.%67oogle.com/settings"),
-        TestCase::KeyValue("rart", "")},
-       true},
       // Fully qualified domain should work as well.
       {"https://accounts.google.com",
        {TestCase::KeyValue("continue",
@@ -1391,15 +1390,9 @@ TEST_F(MAYBE_PasswordFormConversionUtilsTest, IsGaiaReauthFormIgnored) {
     }
     std::string html = builder->ProduceHTML();
     WebFormElement form;
-    LoadWebFormFromHTML(html, &form);
-    std::vector<WebFormControlElement> control_elements;
-    WebVector<blink::WebFormControlElement> web_control_elements;
-    form.GetFormControlElements(web_control_elements);
-    control_elements.assign(web_control_elements.begin(),
-                            web_control_elements.end());
+    LoadWebFormFromHTML(html, &form, test_case.origin);
     EXPECT_EQ(test_case.expected_form_is_reauth,
-              IsGaiaReauthenticationForm(GURL(test_case.origin).GetOrigin(),
-                                         control_elements));
+              IsGaiaReauthenticationForm(form));
   }
 }