Improve submit button detection

keepassxc-browser/common/sites.js

@@ -212,6 +212,8 @@ kpxcSites.formSubmitButtonExceptionFound = function(form) {
         return $('.button[slot=primary-button]');
     } else if (form?.action === 'https://auth.openai.com/log-in/password') {
         return form.querySelector('button[class*=_primary_]');
+    } else if (!form && document.location.origin === 'https://www.reddit.com') {
+        return $('button.login');
     }
 
     return undefined;

keepassxc-browser/content/form.js

@@ -10,7 +10,7 @@ kpxcForm.savedCustomInputs = [];
 kpxcForm.savedForms = [];
 kpxcForm.submitTriggered = false;
 
-// Activate the Credential Banner if existing credentials are not found
+// Activate the Credential Banner if credentials are found from form submit
 kpxcForm.activateCredentialBanner = async function(usernameValue, passwordInputs, passwordField) {
     let passwordValue = '';
     // Check if the form has three password fields -> a possible password change form
@@ -163,7 +163,7 @@ kpxcForm.initForm = function(form, credentialFields) {
         form.addEventListener('submit', kpxcForm.onSubmit);
 
         const submitButton = kpxcForm.getFormSubmitButton(form);
-        if (submitButton !== undefined) {
+        if (submitButton) {
             submitButton.addEventListener('click', kpxcForm.onSubmit);
         }
     }
@@ -181,6 +181,15 @@ kpxcForm.initCustomForm = function(combinations) {
     }
 };
 
+// Identifies a submit button from the page outside any form
+kpxcForm.initSubmitButtonFromPage = function() {
+    let submitButton = kpxcSites.formSubmitButtonExceptionFound();    
+    submitButton ??= $('button[type=submit], button.login');
+    if (submitButton) {
+        submitButton.addEventListener('click', kpxcForm.onSubmit);
+    }
+};
+
 // Triggers when a custom form has been identified with a specific form submit button
 kpxcForm.onCustomFormSubmit = async function(e) {
     if (!e.isTrusted || kpxcForm.savedCustomInputs?.length === 0) {
@@ -227,14 +236,25 @@ kpxcForm.onSubmit = async function(e) {
         form = kpxcForm.savedForms[0].form;
     }
 
-    if (!form) {
+    // Try choosing inputs from the last combination detected.
+    // Needed if initSubmitButtonFromPage() has been used.
+    let usernameField;
+    let passwordField;
+    let passwordInputs = [];
+    if (!form && kpxc.combinations.length > 0) {
+        usernameField = kpxc.combinations.at(-1)?.username;
+        passwordField = kpxc.combinations.at(-1)?.password;
+        passwordInputs = kpxc.combinations.at(-1)?.passwordInputs;
+    } else {
+        [ usernameField, passwordField, passwordInputs ] = kpxcForm.getCredentialFieldsFromForm(form);
+    }
+
+    if (!form && !usernameField && !passwordField) {
         logDebug('Error: No form found for submit detection.');
         kpxcForm.submitTriggered = false;
         return;
     }
 
-    const [ usernameField, passwordField, passwordInputs ] = kpxcForm.getCredentialFieldsFromForm(form);
-    
     // Use the first text field in the form if only username input is missing
     const usernameValue = await kpxcForm.getUsernameValue(!usernameField && passwordField
         ? form?.querySelector('input[type=text]')

keepassxc-browser/content/keepassxc-browser.js

@@ -321,9 +321,14 @@ kpxc.initCombinations = async function(inputs = []) {
     for (const c of combinations) {
         // If no username field is found, handle the single password field as such
         const field = c.username || c.password;
-        if (field && c.form) {
-            // Initialize form-submit for remembering credentials
-            kpxcForm.initForm(c.form, c);
+        if (field) {
+            if (c.form) {
+                // Initialize form-submit for remembering credentials
+                kpxcForm.initForm(c.form, c);
+            } else {
+                // Try to search a submit button
+                kpxcForm.initSubmitButtonFromPage();
+            }
         }
 
         // Don't allow duplicates