Current Path : C:/xampp/htdocs/moodle/lib/horde/framework/Horde/Mime/ |
Current File : C:/xampp/htdocs/moodle/lib/horde/framework/Horde/Mime/Uudecode.php |
<?php /** * Copyright 1999-2017 Horde LLC (http://www.horde.org/) * * ----- * * This file contains code adapted from PEAR's PHP_Compat library (v1.6.0a3). * * http://pear.php.net/package/PHP_Compat * * This code was released under the LGPL 2.1 * * ----- * * See the enclosed file LICENSE for license information (LGPL). If you * did not receive this file, see http://www.horde.org/licenses/lgpl21. * * @category Horde * @copyright 2009-2017 Horde LLC * @copyright 2004-2007 Aidan Lister <aidan@php.net>, Arpad Ray <arpad@php.net> * @license http://www.horde.org/licenses/lgpl21 LGPL 2.1 * @package Mime */ /** * Class used to uudecode data. * * Needed because PHP's built-in uudecode() method is broken. * * @author Chuck Hagenbuch <chuck@horde.org> * @author Aidan Lister <aidan@php.net> * @author Michael Slusarz <slusarz@horde.org> * @author Michael Wallner <mike@php.net> * @category Horde * @copyright 2009-2017 Horde LLC * @copyright 2004-2007 Aidan Lister <aidan@php.net>, Arpad Ray <arpad@php.net> * @license http://www.horde.org/licenses/lgpl21 LGPL 2.1 * @package Mime * @since 2.5.0 */ class Horde_Mime_Uudecode implements Countable, IteratorAggregate { const UUENCODE_REGEX = "/begin ([0-7]{3}) (.+)\r?\n(.+)\r?\nend/Us"; /** * Uudecode data. * * A list of arrays, with each array corresponding to a file in the input * and containing the following keys: * - data: (string) Unencoded data. * - name: (string) Filename. * - perms: (string) Octal permissions. * * @var array */ protected $_data = array(); /** * Scans $input for uuencoded data and converts it to unencoded data. * * @param string $input The input data */ public function __construct($input) { /* Find all uuencoded sections. */ if (preg_match_all(self::UUENCODE_REGEX, $input, $matches, PREG_SET_ORDER)) { foreach ($matches as $v) { $this->_data[] = array( 'data' => $this->_uudecode($v[3]), 'name' => $v[2], 'perm' => $v[1] ); } } } /** * PHP 5's built-in convert_uudecode() is broken. Need this wrapper. * * @param string $input UUencoded input. * * @return string Decoded string. */ protected function _uudecode($input) { $decoded = ''; foreach (explode("\n", $input) as $line) { $c = count($bytes = unpack('c*', substr(trim($line,"\r\n\t"), 1))); while ($c % 4) { $bytes[++$c] = 0; } foreach (array_chunk($bytes, 4) as $b) { $b0 = ($b[0] == 0x60) ? 0 : $b[0] - 0x20; $b1 = ($b[1] == 0x60) ? 0 : $b[1] - 0x20; $b2 = ($b[2] == 0x60) ? 0 : $b[2] - 0x20; $b3 = ($b[3] == 0x60) ? 0 : $b[3] - 0x20; $b0 <<= 2; $b0 |= ($b1 >> 4) & 0x03; $b1 <<= 4; $b1 |= ($b2 >> 2) & 0x0F; $b2 <<= 6; $b2 |= $b3 & 0x3F; $decoded .= pack('c*', $b0, $b1, $b2); } } return rtrim($decoded, "\0"); } /* Countable method. */ public function count() { return count($this->_data); } /* IteratorAggregate method. */ public function getIterator() { return new ArrayIterator($this->_data); } }