Missing `firefox` import in `modules/special-scan.js` throws `ReferenceError: firefox is not defined` during Special Scans

Description

When running special scans using the FindUserProfilesSpecial mode (which performs deep checks for Facebook, Gmail, and Google accounts), execution crashes with an unhandled ReferenceError: firefox is not defined.

This occurs because firefox.Options() is instantiated across multiple functions in modules/special-scan.js, but the firefox object is never imported from selenium-webdriver/firefox.js. Furthermore, because new firefox.Options() is called before entering the try { ... } block, the exception results in an unhandled promise rejection.

Technical Root Cause

In modules/special-scan.js, only Builder, By, and Key are imported from selenium-webdriver:

import helper from './helper.js'
import async from 'async'
import {Builder,By,Key} from 'selenium-webdriver'
// Missing: import firefox from 'selenium-webdriver/firefox.js'

However, lines 37–41, 91–95, and 143–147 invoke new firefox.Options():

// Line 37 in find_username_site_special_facebook_1:
const driver = new Builder()
  .forBrowser('firefox')
  .setFirefoxOptions(new firefox.Options().headless().windowSize({ // <-- ReferenceError: firefox is not defined
    width: 640,
    height: 480
  }))
  .build()

In comparison, modules/slow-scan.js correctly imports firefox:

import firefox from 'selenium-webdriver/firefox.js'

Steps to Reproduce

1. Start the server: node app.js --gui (or run a scan targeting FindUserProfilesSpecial).
2. Run a special scan for any username.
3. Observe the crash output in the terminal:
   复制

   ReferenceError: firefox is not defined
       at find_username_site_special_facebook_1 (modules/special-scan.js:38:31)
       at ...

Impact

• Severity: High
• Completely breaks the FindUserProfilesSpecial scanning pipeline for all users trying to inspect Google, Gmail, and Facebook endpoints.

Proposed Solution / Patch

Add the missing import firefox at line 3 of modules/special-scan.js:

--- a/modules/special-scan.js
+++ b/modules/special-scan.js
@@ -1,6 +1,7 @@
 import helper from './helper.js'
 import async from 'async'
+import firefox from 'selenium-webdriver/firefox.js'
 import {Builder,By,Key} from 'selenium-webdriver'