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Allow login from specific IP Address

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Allow login from specific IP Address

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  1. // Allow login from specific IP Address
  2. function get_the_user_ip() {
  3. if ( ! empty( $_SERVER['HTTP_CLIENT_IP'] ) ) {
  4. //check ip from share internet
  5. $ip = $_SERVER['HTTP_CLIENT_IP'];
  6. } elseif ( ! empty( $_SERVER['HTTP_X_FORWARDED_FOR'] ) ) {
  7. //to check ip is pass from proxy
  8. $ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
  9. } else {
  10. $ip = $_SERVER['REMOTE_ADDR'];
  11. }
  12. return apply_filters( 'wpb_get_ip', $ip );
  13. }
  14.  
  15. add_shortcode('show_ip', 'get_the_user_ip');
  16.  
  17. add_filter( 'authenticate', 'my_custom_authenticate', 10, 3 );
  18. function my_custom_authenticate(){
  19.     //Get POSTED value
  20. 	if(isset($_POST['log']) && !empty($_POST['log'])){
  21.  
  22. 	$username='';
  23.     $username=$_POST['log'];
  24. 	$admin_ip='000.000.00.00'; // replace your IP here
  25. 	$user_id=2;
  26. 	$current_ip=do_shortcode('[show_ip]');
  27.     //Get user object
  28.    	$user = get_user_by('login',$username);
  29.  
  30. 	if($user_id==$user->ID){
  31. 	    if($admin_ip != $current_ip){
  32. 			add_filter('login_errors','login_error_message');
  33.  
  34. 			function login_error_message($error){
  35.  
  36. 			    //check if that's the error you are looking for
  37. 			    $pos = strpos($error, 'incorrect');
  38. 			    if (is_int($pos)) {
  39. 			        //its the right error so you can overwrite it
  40. 			        $error = "<strong>ERROR</strong>: You're unique identifier was invalid.";
  41. 			    }
  42. 			    return $error;
  43. 			}
  44. 	        //User note found, or no value entered or doesn't match stored value - don't proceed.
  45. 	            remove_action('authenticate', 'wp_authenticate_username_password', 20); 
  46.  
  47. 	    }
  48.     }
  49.  
  50.     //Make sure you return null 
  51.     return null;
  52.     }
  53. }

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