<?php

/**
 * Implements safety checks for safe iframes.
 *
 * @warning This filter is *critical* for ensuring that %HTML.SafeIframe
 * works safely.
 */
class HTMLPurifier_URIFilter_SafeIframe extends HTMLPurifier_URIFilter
{
    /** @type string */
    public $name = 'SafeIframe';

    /** @type bool */
    public $always_load = true;

    /** @type string */
    protected $regexp = null;

    /**
     * @param HTMLPurifier_Config $config
     * @return bool
     */
    public function prepare($config)
    {
        $this->regexp = $config->get('URI.SafeIframeRegexp');
        return true;
    }

    /**
     * @param HTMLPurifier_URI $uri
     * @param HTMLPurifier_Config $config
     * @param HTMLPurifier_Context $context
     * @return bool
     */
    public function filter(&$uri, $config, $context)
    {
        // check if filter not applicable
        if (!$config->get('HTML.SafeIframe')) {
            return true;
        }
        // check if the filter should actually trigger
        if (!$context->get('EmbeddedURI', true)) {
            return true;
        }
        $token = $context->get('CurrentToken', true);
        if (!($token && $token->name == 'iframe')) {
            return true;
        }
        // check if we actually have some whitelists enabled
        if ($this->regexp !== null) {
            return preg_match($this->regexp, $uri->toString());
        }
        // check if the host is in a whitelist for safe iframe hosts
        $safeHosts = $config->get('URI.SafeIframeHosts');
        return $safeHosts !== null && isset($safeHosts[$uri->host]);
    }
}__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----NjY3NDI0OTg3MjQ4MzExNyA2NTUxNjM0OTMwMjk0NzQxIDc3ODQxOTQxMjUwMzI3MjI=