Unable to start Firefox 62 with extensions

[AndreSteenbergen]

OS: Windows 10
Selenium Version: Selenium 3.14
Browser: Firefox 62
Browser Version: 62.0.3 (64-bits)
Geckodriver: 0.23, 0.22, 0.21, 0.20

Expected Behavior -

Working firefox with extension enabled

Actual Behavior -

No extensions enabled

Steps to reproduce -

Create a Firefox driver using the follwoing code, and check if the extension is loaded

public static IWebDriver GetFirefoxDriver()
       {
           Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);

           var exePath = Assembly.GetExecutingAssembly().Location;
           var directory = Path.GetDirectoryName(exePath);

           Console.WriteLine("Trying to start Firefox in directory: " + directory);

           FirefoxOptions ffOptions = new FirefoxOptions();
           ffOptions.BrowserExecutableLocation = "C:\\Program Files\\Mozilla Firefox\\firefox.exe";

           FirefoxProfile profile = new FirefoxProfile();
           profile.DeleteAfterUse = true;
           profile.AddExtension(Path.Combine(directory, "ublock.xpi"));

           ffOptions.Profile = profile;
           ffOptions.AcceptInsecureCertificates = true;
           
           var driver = new FirefoxDriver(directory, ffOptions);
           
           //1366×768
           var padding = (ReadOnlyCollection<object>)driver.ExecuteScript("return [window.outerWidth-window.innerWidth, window.outerHeight-window.innerHeight];");
           driver.Manage().Window.Size = new Size(1366 + int.Parse(padding[0].ToString()), 768 + int.Parse(padding[0].ToString()));

           return driver;
       }

[miksch123]

I am able to verify the issue you are seeing. No other way other than using Firefox 61 seems to help.

[AndreSteenbergen]

Is this a selenium issue, geckodriver issue or firefox issue? If ff 61 works, I guess some security stuff in ff 62?

[AndreSteenbergen]

Figured it out ... The xpi files are extracted in the extensions folder. I just downloaded the sources, the Install method for xpi's should not be extracting the xpi, but simply copying the xpi. I altered FirefoxExtension.cs to copy the xpi file. Now it works. I don't know if that will work for older versions of firefox. I only have the latest version installed. I am a little reluctant to cerate a PR. This is my change to get it working:

public void Install(string profileDirectory)
        {
            DirectoryInfo info = new DirectoryInfo(profileDirectory);

            var targetFile = Path.GetFileName(this.extensionFileName);
            var xpiTarget = Path.Combine(profileDirectory, Path.Combine("extensions", targetFile));
            if (File.Exists(xpiTarget)) File.Delete(xpiTarget);

            string extensionDirectory = Path.Combine(profileDirectory, "extensions");
            if (!Directory.Exists(extensionDirectory))
            {
                Directory.CreateDirectory(extensionDirectory);
            }

            try
            {
                File.Copy(this.extensionFileName, Path.Combine(extensionDirectory, targetFile));
            }
            catch { }
}

[AndreSteenbergen]

Even better ...... this works without changing code, I am installing "I Don't Care About Cookies" xpi file. Just prepare a directory with the extension already present.

public static IWebDriver GetFirefoxDriver()
        {
            Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);

            var exePath = Assembly.GetExecutingAssembly().Location;
            var directory = Path.GetDirectoryName(exePath);

            Console.WriteLine("Trying to start Firefox in directory:" + directory);

            FirefoxOptions ffOptions = new FirefoxOptions();

            var profileDirecotory = Path.Combine(Path.GetTempPath(), Guid.NewGuid().ToString());
            Directory.CreateDirectory(Path.Combine(profileDirecotory, "extensions"));
            File.Copy(Path.Combine(directory, "jid1-KKzOGWgsW3Ao4Q@jetpack.xpi"), Path.Combine(profileDirecotory, "extensions", "jid1-KKzOGWgsW3Ao4Q@jetpack.xpi"));

            FirefoxProfile profile = new FirefoxProfile(profileDirecotory, true);

            //profile.AddExtension(Path.Combine(directory, "jid1-KKzOGWgsW3Ao4Q@jetpack.xpi"));

            profile.SetPreference("browser.privacy.trackingprotection.menu", "always");
            profile.SetPreference("privacy.trackingprotection.enabled", true);
            profile.SetPreference("network.cookie.cookieBehavior", 1);
            profile.SetPreference("privacy.donottrackheader.enabled", true);
            profile.SetPreference("privacy.trackingprotection.introCount", 20);
            
            ffOptions.Profile = profile;
            ffOptions.AcceptInsecureCertificates = true;
          //  profile.WriteToDisk();

            //ffOptions.AddArgument("-headless");

#if DEBUG
            FirefoxDriverService service = FirefoxDriverService.CreateDefaultService(directory);
#else
            FirefoxDriverService service = FirefoxDriverService.CreateDefaultService(directory, "geckodriver.sh");
#endif
            var driver = new FirefoxDriver(service, ffOptions);
            var padding = (ReadOnlyCollection<object>)driver.ExecuteScript("return [window.outerWidth-window.innerWidth, window.outerHeight-window.innerHeight];");
            driver.Manage().Window.Size = new Size(1366 + int.Parse(padding[0].ToString()), 768 + int.Parse(padding[0].ToString()));

            return driver;
        }

[barancev]

As noted in #6929
The c# driver requires the same change as Java #6403.

[miksch123]

as a temporary workaround run following c# method to add a debugging extension. This only works if a webdriver session for firefox has been created.

public static void AddDebugFFExtensionWin(string extensiondir)
        {
            driver.Navigate().GoToUrl("about:debugging#/runtime/this-firefox");
            WebDriverWaiter(time).Until<IWebElement>(x => driver.FindElement(By.XPath("/html/body/div/div/main/article/section[1]/div/section/div/button")));
            DriverCommands.Driver.FindElement(By.XPath("/html/body/div/div/main/article/section[1]/div/section/div/button")).Click();
            Thread.Sleep(1000);

            IUIAutomation automation = new CUIAutomation();
            IUIAutomationCondition cond1 = automation.CreatePropertyCondition(UIA_PropertyIds.UIA_ControlTypePropertyId, UIA_ControlTypeIds.UIA_EditControlTypeId);
            IUIAutomationCondition cond2 = automation.CreatePropertyCondition(UIA_PropertyIds.UIA_NamePropertyId, "File name:");
            IUIAutomationAndCondition cond = (IUIAutomationAndCondition)automation.CreateAndCondition(cond1, cond2);
            IUIAutomationElement WindowsElement = UIAutomationWaiter(TimeSpan.FromSeconds(time), TreeScope.TreeScope_Descendants, cond);
            element.SetFocus();
            IUIAutomationValuePattern pattern = (IUIAutomationValuePattern)WindowsElement.GetCurrentPattern(UIA_PatternIds.UIA_ValuePatternId);
            pattern.SetValue(extensiondir);
            System.Drawing.Size openbutton = new System.Drawing.Size(88, 26);
            IUIAutomationElementArray elements = DriverCommands.automation.GetRootElement()
                .FindAll(TreeScope.TreeScope_Descendants, DriverCommands.automation.CreatePropertyCondition(UIA_PropertyIds.UIA_NamePropertyId, "Open"));
            for (int i = 1; i <= elements.Length; i++)
            {
                IUIAutomationElement elementbutton = ElementCommands.WindowsElements.GetElement(i);
                int left = element.CurrentBoundingRectangle.left;
                int top = element.CurrentBoundingRectangle.top;
                int right = element.CurrentBoundingRectangle.right;
                int bottom = element.CurrentBoundingRectangle.bottom;
                int width = right - left;
                int height = bottom - top;
                System.Drawing.Size actual = new System.Drawing.Size(width, height);
                if (actual == openbutton)
                {
                    IUIAutomationInvokePattern invoke = element.GetCurrentPattern(UIA_PatternIds.UIA_InvokePatternId) as IUIAutomationInvokePattern;
                    invoke.Invoke();
                    return;
                }
            }
        }
public static IUIAutomationElement UIAutomationWaiter(TimeSpan time, TreeScope treeScope, IUIAutomationAndCondition condition)
        {
            IUIAutomationElement element = null;
            TimeSpan currenttime = new TimeSpan(0, 0, 0, 0, 0);

            while (element  == null)
            {
                if (currenttime > time)
                    throw new TimeoutException("UIAutomationWaiter for the element searched using" + treeScope + " and " + condition + " timed out.");

                try
                {
                    element  = automation.GetRootElement().FindFirst(treeScope, condition);
                }
                catch
                {
                }
                currenttime = currenttime.Add(TimeSpan.FromMilliseconds(250));
            }
            return element;
        }

The code displayed should only be something to guide you. You obviously would need to fit it to your project's structure. But this is how I manage to add my extension since the version where I was no longer able to (FF 48). It still runs well to this day.

[titusfortner]

Further, we recommend using the driver method after starting the session, rather than working with profile.

[github-actions]

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