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AnonSec Shell
Server IP : 162.0.212.4  /  Your IP : 216.73.216.14   [ Reverse IP ]
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System : Linux premium146.web-hosting.com 4.18.0-553.44.1.lve.el8.x86_64 #1 SMP Thu Mar 13 14:29:12 UTC 2025 x86_64
User : alshnoli ( 2431)
PHP Version : 8.3.28
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Directory :  /home/alshnoli/public_html/wp-content/plugins/perfmatters/inc/classes/

Upload File :
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Current File : /home/alshnoli/public_html/wp-content/plugins/perfmatters/inc/classes/Buffer.php
<?php
namespace Perfmatters;

class Buffer
{
    //initialize buffer class
    public static function init()
    {
        add_action('wp', array('Perfmatters\Buffer', 'queue'));
    }

    //queue functions
    public static function queue() 
    {

        //inital checks
        if(is_admin() || perfmatters_is_dynamic_request() || perfmatters_is_page_builder() || isset($_GET['perfmatters']) || isset($_GET['perfmattersoff'])) {
            return;
        }

        //user agent check
        if(!empty($_SERVER['HTTP_USER_AGENT'])) {
            $excluded_agents = array(
                'usercentrics'
            );
            foreach($excluded_agents as $agent) {
                if(stripos($_SERVER['HTTP_USER_AGENT'], $agent) !== false) {
                    return;
                }
            }
        }

        //buffer is allowed
        if(!apply_filters('perfmatters_allow_buffer', true)) {
            return;
        }

        //add buffer action
        add_action('template_redirect', array('Perfmatters\Buffer', 'start'), -9999);
    }

    //start buffer
    public static function start()
    {
        if(has_filter('perfmatters_output_buffer_template_redirect')) {

            //exclude certain requests
            if(is_embed() || is_feed() || is_preview() || is_customize_preview()) {
                return;
            }

            //don't buffer amp
            if(function_exists('is_amp_endpoint') && is_amp_endpoint()) {
                return;
            }

            ob_start(function($html) {

                //check for valid buffer
                if(!self::is_valid_buffer($html)) {
                    return $html;
                }

                //run buffer filters
                $html = (string) apply_filters('perfmatters_output_buffer_template_redirect', $html);

                //return processed html
                return $html;
            });
        }
    }

    //make sure buffer content is valid
    private static function is_valid_buffer($html)
    {
        //check for valid/invalid tags
        if(stripos($html, '<html') === false || stripos($html, '</body>') === false || stripos($html, '<xsl:stylesheet') !== false) {
            return false;
        }

        //check for invalid urls
        $current_url = home_url($_SERVER['REQUEST_URI']);
        $matches = apply_filters('perfmatters_buffer_excluded_extensions', array('.xml', '.txt', '.php'));
        foreach($matches as $match) {
            if(stripos($current_url, $match) !== false) {
                return false;
            }
        }

        return true;
    }
}

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