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See Release Notes

  • Bug fixes for general core bugs in 3.11.x will end 14 Nov 2022 (12 months plus 6 months extension).
  • Bug fixes for security issues in 3.11.x will end 13 Nov 2023 (18 months plus 12 months extension).
  • PHP version: minimum PHP 7.3.0 Note: minimum PHP version has increased since Moodle 3.10. PHP 7.4.x is supported too.
<?php
> /** > declare(strict_types=1);
* SimplePie * * A PHP-Based RSS and Atom Feed Framework. * Takes the hard work out of managing a complete RSS/Atom solution. *
< * Copyright (c) 2004-2016, Ryan Parman, Sam Sneddon, Ryan McCue, and contributors
> * Copyright (c) 2004-2022, Ryan Parman, Sam Sneddon, Ryan McCue, and contributors
* All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, are * permitted provided that the following conditions are met: * * * Redistributions of source code must retain the above copyright notice, this list of * conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright notice, this list * of conditions and the following disclaimer in the documentation and/or other materials * provided with the distribution. * * * Neither the name of the SimplePie Team nor the names of its contributors may be used * to endorse or promote products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS * AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * * @package SimplePie * @copyright 2004-2016 Ryan Parman, Sam Sneddon, Ryan McCue * @author Ryan Parman * @author Sam Sneddon * @author Ryan McCue * @link http://simplepie.org/ SimplePie * @license http://www.opensource.org/licenses/bsd-license.php BSD License */
> use SimplePie\Net\IPv6;
< /** < * Class to validate and to work with IPv6 addresses. < * < * @package SimplePie < * @subpackage HTTP < * @copyright 2003-2005 The PHP Group < * @license http://www.opensource.org/licenses/bsd-license.php < * @link http://pear.php.net/package/Net_IPv6 < * @author Alexander Merz <alexander.merz@web.de> < * @author elfrink at introweb dot nl < * @author Josh Peck <jmp at joshpeck dot org> < * @author Sam Sneddon <geoffers@gmail.com> < */ < class SimplePie_Net_IPv6 < { < /** < * Uncompresses an IPv6 address < * < * RFC 4291 allows you to compress concecutive zero pieces in an address to < * '::'. This method expects a valid IPv6 address and expands the '::' to < * the required number of zero pieces. < * < * Example: FF01::101 -> FF01:0:0:0:0:0:0:101 < * ::1 -> 0:0:0:0:0:0:0:1 < * < * @author Alexander Merz <alexander.merz@web.de> < * @author elfrink at introweb dot nl < * @author Josh Peck <jmp at joshpeck dot org> < * @copyright 2003-2005 The PHP Group < * @license http://www.opensource.org/licenses/bsd-license.php < * @param string $ip An IPv6 address < * @return string The uncompressed IPv6 address < */ < public static function uncompress($ip) < { < $c1 = -1; < $c2 = -1; < if (substr_count($ip, '::') === 1) < { < list($ip1, $ip2) = explode('::', $ip); < if ($ip1 === '') < { < $c1 = -1; < } < else < { < $c1 = substr_count($ip1, ':'); < } < if ($ip2 === '') < { < $c2 = -1; < } < else < { < $c2 = substr_count($ip2, ':'); < } < if (strpos($ip2, '.') !== false) < { < $c2++; < } < // :: < if ($c1 === -1 && $c2 === -1) < { < $ip = '0:0:0:0:0:0:0:0'; < } < // ::xxx < else if ($c1 === -1) < { < $fill = str_repeat('0:', 7 - $c2); < $ip = str_replace('::', $fill, $ip); < } < // xxx:: < else if ($c2 === -1) < { < $fill = str_repeat(':0', 7 - $c1); < $ip = str_replace('::', $fill, $ip); < } < // xxx::xxx < else < { < $fill = ':' . str_repeat('0:', 6 - $c2 - $c1); < $ip = str_replace('::', $fill, $ip); < } < } < return $ip; < } < < /** < * Compresses an IPv6 address < * < * RFC 4291 allows you to compress concecutive zero pieces in an address to < * '::'. This method expects a valid IPv6 address and compresses consecutive < * zero pieces to '::'. < * < * Example: FF01:0:0:0:0:0:0:101 -> FF01::101 < * 0:0:0:0:0:0:0:1 -> ::1 < * < * @see uncompress() < * @param string $ip An IPv6 address < * @return string The compressed IPv6 address < */ < public static function compress($ip) < { < // Prepare the IP to be compressed < $ip = self::uncompress($ip); < $ip_parts = self::split_v6_v4($ip); < < // Replace all leading zeros < $ip_parts[0] = preg_replace('/(^|:)0+([0-9])/', '\1\2', $ip_parts[0]); < < // Find bunches of zeros < if (preg_match_all('/(?:^|:)(?:0(?::|$))+/', $ip_parts[0], $matches, PREG_OFFSET_CAPTURE)) < { < $max = 0; < $pos = null; < foreach ($matches[0] as $match) < { < if (strlen($match[0]) > $max) < { < $max = strlen($match[0]); < $pos = $match[1]; < } < } < < $ip_parts[0] = substr_replace($ip_parts[0], '::', $pos, $max); < } < < if ($ip_parts[1] !== '') < { < return implode(':', $ip_parts); < } < < return $ip_parts[0]; < } < < /** < * Splits an IPv6 address into the IPv6 and IPv4 representation parts < * < * RFC 4291 allows you to represent the last two parts of an IPv6 address < * using the standard IPv4 representation < * < * Example: 0:0:0:0:0:0:13.1.68.3 < * 0:0:0:0:0:FFFF:129.144.52.38 < * < * @param string $ip An IPv6 address < * @return array [0] contains the IPv6 represented part, and [1] the IPv4 represented part < */ < private static function split_v6_v4($ip) < { < if (strpos($ip, '.') !== false) < { < $pos = strrpos($ip, ':'); < $ipv6_part = substr($ip, 0, $pos); < $ipv4_part = substr($ip, $pos + 1); < return array($ipv6_part, $ipv4_part); < } < < return array($ip, ''); < } < < /** < * Checks an IPv6 address < * < * Checks if the given IP is a valid IPv6 address < * < * @param string $ip An IPv6 address < * @return bool true if $ip is a valid IPv6 address < */ < public static function check_ipv6($ip) < { < $ip = self::uncompress($ip); < list($ipv6, $ipv4) = self::split_v6_v4($ip); < $ipv6 = explode(':', $ipv6); < $ipv4 = explode('.', $ipv4); < if (count($ipv6) === 8 && count($ipv4) === 1 || count($ipv6) === 6 && count($ipv4) === 4) < { < foreach ($ipv6 as $ipv6_part) < { < // The section can't be empty < if ($ipv6_part === '') < return false; < < // Nor can it be over four characters < if (strlen($ipv6_part) > 4) < return false;
> class_exists('SimplePie\Net\IPv6');
< // Remove leading zeros (this is safe because of the above) < $ipv6_part = ltrim($ipv6_part, '0'); < if ($ipv6_part === '') < $ipv6_part = '0';
> // @trigger_error(sprintf('Using the "SimplePie_Net_IPv6" class is deprecated since SimplePie 1.7.0, use "SimplePie\Net\IPv6" instead.'), \E_USER_DEPRECATED);
< // Check the value is valid < $value = hexdec($ipv6_part); < if (dechex($value) !== strtolower($ipv6_part) || $value < 0 || $value > 0xFFFF) < return false; < } < if (count($ipv4) === 4) < { < foreach ($ipv4 as $ipv4_part) < { < $value = (int) $ipv4_part; < if ((string) $value !== $ipv4_part || $value < 0 || $value > 0xFF) < return false; < } < } < return true; < } < < return false; < } < < /** < * Checks if the given IP is a valid IPv6 address < * < * @codeCoverageIgnore < * @deprecated Use {@see SimplePie_Net_IPv6::check_ipv6()} instead < * @see check_ipv6 < * @param string $ip An IPv6 address < * @return bool true if $ip is a valid IPv6 address < */ < public static function checkIPv6($ip)
> if (\false) { > /** @deprecated since SimplePie 1.7.0, use "SimplePie\Net\IPv6" instead */ > class SimplePie_Net_IPv6 extends IPv6
{
< return self::check_ipv6($ip);
} }