[tt-rss.git] / lib / htmlpurifier / library / HTMLPurifier / AttrDef / URI / IPv4.php

<?php

/**
 * Validates an IPv4 address
 * @author Feyd @ forums.devnetwork.net (public domain)
 */
class HTMLPurifier_AttrDef_URI_IPv4 extends HTMLPurifier_AttrDef
{

    /**
     * IPv4 regex, protected so that IPv6 can reuse it
     */
    protected $ip4;

    public function validate($aIP, $config, $context) {

        if (!$this->ip4) $this->_loadRegex();

        if (preg_match('#^' . $this->ip4 . '$#s', $aIP))
        {
                return $aIP;
        }

        return false;

    }

    /**
     * Lazy load function to prevent regex from being stuffed in
     * cache.
     */
    protected function _loadRegex() {
        $oct = '(?:25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9][0-9]|[0-9])'; // 0-255
        $this->ip4 = "(?:{$oct}\\.{$oct}\\.{$oct}\\.{$oct})";
    }

}

// vim: et sw=4 sts=4
Commit	Line	Data
f45a286b AD	1	<?php
	2
	3	/**
	4	* Validates an IPv4 address
	5	* @author Feyd @ forums.devnetwork.net (public domain)
	6	*/
	7	class HTMLPurifier_AttrDef_URI_IPv4 extends HTMLPurifier_AttrDef
	8	{
	9
	10	/**
	11	* IPv4 regex, protected so that IPv6 can reuse it
	12	*/
	13	protected $ip4;
	14
	15	public function validate($aIP, $config, $context) {
	16
	17	if (!$this->ip4) $this->_loadRegex();
	18
	19	if (preg_match('#^' . $this->ip4 . '$#s', $aIP))
	20	{
	21	return $aIP;
	22	}
	23
	24	return false;
	25
	26	}
	27
	28	/**
	29	* Lazy load function to prevent regex from being stuffed in
	30	* cache.
	31	*/
	32	protected function _loadRegex() {
	33	$oct = '(?:25[0-5]\|2[0-4][0-9]\|1[0-9]{2}\|[1-9][0-9]\|[0-9])'; // 0-255
	34	$this->ip4 = "(?:{$oct}\\.{$oct}\\.{$oct}\\.{$oct})";
	35	}
	36
	37	}
	38
	39	// vim: et sw=4 sts=4