Search abused by bots

Hi,

There is already a rate-limit feature in the premium version of NinjaFirewall.

But if you just want to block search queries containing several question marks, you can use the .htninja file:

<?php
/*
 +===================================================================+
 | NinjaFirewall optional configuration file                         |
 |                                                                   |
 | See: https://nintechnet.com/ninjafirewall/wp-edition/help/?htninja |
 +===================================================================+
*/

// Block search requests containing at least 4 consecutive "?" signs:
if ( isset( $_GET['s'] ) && strpos( $_GET['s'], '????' ) !== FALSE ) {
   return 'BLOCK'; // reject it
}

• This reply was modified 7 years, 8 months ago by nintechnet.
• This reply was modified 7 years, 8 months ago by nintechnet.

Hi nintechnet,

thanks – that works perfect.
How do i extend this to do the same with all asia letters? My blog is english and i dont want the stats to be messed up with this words.

Like this:

美爪屋
心机少女
开封奇谈-这个包公不太行

…and also russia and turkish letters…

по волчьим законам
sevimli kü?ük yalancilar

Use regular expression to check the unicode character, for instance, Han for Chinese:

if ( isset( $_GET['s'] ) && preg_match( '/\p{Han}/u', $_GET['s']) ) {
   return 'BLOCK'; // reject it
}

Cyrillic should do for Russian. See https://php.net/manual/en/regexp.reference.unicode.php