1. function ensureSessionCookieGuard() {
  2. // Check if session cookies are enabled in the browser.
  3. const sessionCookiesEnabled = document.cookie.indexOf('sessionid=') !== -1;
  5. // If session cookies are not enabled, display a message and prevent execution.
  6. if (!sessionCookiesEnabled) {
  7. alert('Session cookies are required for this script to function. Please enable them in your browser settings.');
  8. return false; // Prevent execution
  9. }
  11. // Function to check for manual overrides of session cookie values.
  12. function checkSessionCookieOverrides() {
  13. // Get the current session cookie value.
  14. const sessionId = document.cookie.split('; ').find(cookie => cookie.startsWith('sessionid='))?.split('=')[1];
  16. //If sessionId is undefined, it means there is no session cookie.
  17. if (!sessionId) {
  18. return false;
  19. }
  21. // Check if the session cookie value has been manually overridden.
  22. // You can customize this check based on your specific override mechanism.
  23. // For example, checking for a specific attribute or value.
  24. if (sessionId === 'OVERRIDDEN_VALUE') {
  25. alert('Session cookie has been manually overridden. Script will not proceed.');
  26. return false; // Prevent execution
  27. }
  29. return true; // No override found, proceed.
  30. }
  32. // Check for overrides before each execution.
  33. if (!checkSessionCookieOverrides()) {
  34. return false; // Prevent execution
  35. }
  37. // Allow script execution if session cookies are enabled and no overrides are found.
  38. return true;
  39. }

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