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Is it possible to disallow certain characters in the search bar in Magento 1.8.1.0?

We are getting a few searches of what looks like a Mysql attack using characters like "$().// etc

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You can do it like below. Go to your form.mini.phtml file in

app/design/frontend/YOUR_PACKAGE/YOUR_THEME/template/catalogsearch/

Add below javasctipt function in your file.

function validate() {
    var element = document.getElementById('search');
    element.value = element.value.replace(/[^a-zA-Z0-9@]+/, '');
};

Now add onkeyup="validate();" in your textbox like below.

<input onkeyup="validate();" id="search" type="text" 
name="<?php echo $catalogSearchHelper->getQueryParamName() ?>" 
value="<?php echo $catalogSearchHelper->getEscapedQueryText() ?>" 
class="input-text" 
maxlength="<?php echo $catalogSearchHelper->getMaxQueryLength();?>" />
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  • Thanks, I got it to work on development site.. I changed "var element = document.getElementById('input-field');" to "var element = document.getElementById('search');" Is this still correct? – Callam Warner-Billington Aug 23 '17 at 9:18
  • @CallamWarner-Billington, Thanks. It was a typo mistake. I have updated the code. – Yogesh Trivedi Aug 23 '17 at 10:19
  • Didn't work, the search terms are still coming through? i.cubeupload.com/Ub8OrV.png – Callam Warner-Billington Aug 24 '17 at 13:36
  • Can you check by enabling template path hints if the file which you edited is the correct file? Also have you refreshed your cache? – Yogesh Trivedi Aug 25 '17 at 3:59
  • I've just flushed the cache and the file i edited is located: app\design\frontend\default\ma_kidstore\template\catalogsearch - I've cleared all search terms so will update if they come through again. – Callam Warner-Billington Aug 25 '17 at 8:12

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