Autosubmit forms by faking an Enter keypress (#55)

Author: max-baz

src/background.js

@@ -240,10 +240,33 @@ async function dispatchFocusOrSubmit(settings, request, allFrames, allowForeign)
         foreignFills: settings.foreignFills[settings.host] || {}
     });
 
-    await chrome.tabs.executeScript(settings.tab.id, {
+    let perFrameResults = await chrome.tabs.executeScript(settings.tab.id, {
         allFrames: allFrames,
         code: `window.browserpass.focusOrSubmit(${JSON.stringify(request)});`
     });
+
+    // if necessary, dispatch Enter keypress to autosubmit the form
+    // currently only works on Chromium and requires debugger permission
+    try {
+        for (let frame of perFrameResults) {
+            if (frame.needPressEnter) {
+                chrome.debugger.attach({ tabId: settings.tab.id }, "1.2");
+                for (let type of ["keyDown", "keyUp"]) {
+                    chrome.debugger.sendCommand(
+                        { tabId: settings.tab.id },
+                        "Input.dispatchKeyEvent",
+                        {
+                            type: type,
+                            windowsVirtualKeyCode: 13,
+                            nativeVirtualKeyCode: 13
+                        }
+                    );
+                }
+                chrome.debugger.detach({ tabId: settings.tab.id });
+                break;
+            }
+        }
+    } catch (e) {}
 }
 
 /**

src/inject.js

@@ -136,9 +136,13 @@
      * @since 3.0.0
      *
      * @param object request Form fill request
-     * @return void
+     * @return object result of focusing or submitting a form
      */
     function focusOrSubmit(request) {
+        var result = {
+            needPressEnter: false
+        };
+
         // get the login form
         var loginForm = form();
 
@@ -167,6 +171,10 @@
                 }
             } else {
                 // There is no submit button.
+                if (request.autoSubmit) {
+                    // signal background script that we want it to press Enter for us
+                    result.needPressEnter = true;
+                }
                 // We need to keep focus somewhere within the form, so that Enter hopefully submits the form.
                 var password = find(PASSWORD_FIELDS, loginForm);
                 if (password) {
@@ -179,6 +187,8 @@
                 }
             }
         }
+
+        return result;
     }
 
     /**

src/manifest-chromium.json

@@ -23,6 +23,7 @@
         "open_in_tab": false
     },
     "permissions": [
+        "debugger",
         "activeTab",
         "tabs",
         "clipboardWrite",