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366 lines
13 KiB
PHP
366 lines
13 KiB
PHP
<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Mime
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* @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id: Mime.php 24953 2012-06-13 19:09:58Z rob $
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*/
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/**
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* Support class for MultiPart Mime Messages
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*
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* @category Zend
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* @package Zend_Mime
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* @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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class Zend_Mime
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{
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const TYPE_OCTETSTREAM = 'application/octet-stream';
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const TYPE_TEXT = 'text/plain';
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const TYPE_HTML = 'text/html';
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const ENCODING_7BIT = '7bit';
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const ENCODING_8BIT = '8bit';
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const ENCODING_QUOTEDPRINTABLE = 'quoted-printable';
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const ENCODING_BASE64 = 'base64';
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const DISPOSITION_ATTACHMENT = 'attachment';
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const DISPOSITION_INLINE = 'inline';
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const LINELENGTH = 72;
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const LINEEND = "\n";
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const MULTIPART_ALTERNATIVE = 'multipart/alternative';
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const MULTIPART_MIXED = 'multipart/mixed';
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const MULTIPART_RELATED = 'multipart/related';
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protected $_boundary;
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protected static $makeUnique = 0;
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// lookup-Tables for QuotedPrintable
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public static $qpKeys = array(
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"\x00","\x01","\x02","\x03","\x04","\x05","\x06","\x07",
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"\x08","\x09","\x0A","\x0B","\x0C","\x0D","\x0E","\x0F",
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"\x10","\x11","\x12","\x13","\x14","\x15","\x16","\x17",
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"\x18","\x19","\x1A","\x1B","\x1C","\x1D","\x1E","\x1F",
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"\x7F","\x80","\x81","\x82","\x83","\x84","\x85","\x86",
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"\x87","\x88","\x89","\x8A","\x8B","\x8C","\x8D","\x8E",
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"\x8F","\x90","\x91","\x92","\x93","\x94","\x95","\x96",
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"\x97","\x98","\x99","\x9A","\x9B","\x9C","\x9D","\x9E",
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"\x9F","\xA0","\xA1","\xA2","\xA3","\xA4","\xA5","\xA6",
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"\xA7","\xA8","\xA9","\xAA","\xAB","\xAC","\xAD","\xAE",
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"\xAF","\xB0","\xB1","\xB2","\xB3","\xB4","\xB5","\xB6",
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"\xB7","\xB8","\xB9","\xBA","\xBB","\xBC","\xBD","\xBE",
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"\xBF","\xC0","\xC1","\xC2","\xC3","\xC4","\xC5","\xC6",
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"\xC7","\xC8","\xC9","\xCA","\xCB","\xCC","\xCD","\xCE",
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"\xCF","\xD0","\xD1","\xD2","\xD3","\xD4","\xD5","\xD6",
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"\xD7","\xD8","\xD9","\xDA","\xDB","\xDC","\xDD","\xDE",
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"\xDF","\xE0","\xE1","\xE2","\xE3","\xE4","\xE5","\xE6",
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"\xE7","\xE8","\xE9","\xEA","\xEB","\xEC","\xED","\xEE",
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"\xEF","\xF0","\xF1","\xF2","\xF3","\xF4","\xF5","\xF6",
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"\xF7","\xF8","\xF9","\xFA","\xFB","\xFC","\xFD","\xFE",
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"\xFF"
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);
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public static $qpReplaceValues = array(
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"=00","=01","=02","=03","=04","=05","=06","=07",
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"=08","=09","=0A","=0B","=0C","=0D","=0E","=0F",
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"=10","=11","=12","=13","=14","=15","=16","=17",
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"=18","=19","=1A","=1B","=1C","=1D","=1E","=1F",
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"=7F","=80","=81","=82","=83","=84","=85","=86",
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"=87","=88","=89","=8A","=8B","=8C","=8D","=8E",
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"=8F","=90","=91","=92","=93","=94","=95","=96",
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"=97","=98","=99","=9A","=9B","=9C","=9D","=9E",
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"=9F","=A0","=A1","=A2","=A3","=A4","=A5","=A6",
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"=A7","=A8","=A9","=AA","=AB","=AC","=AD","=AE",
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"=AF","=B0","=B1","=B2","=B3","=B4","=B5","=B6",
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"=B7","=B8","=B9","=BA","=BB","=BC","=BD","=BE",
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"=BF","=C0","=C1","=C2","=C3","=C4","=C5","=C6",
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"=C7","=C8","=C9","=CA","=CB","=CC","=CD","=CE",
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"=CF","=D0","=D1","=D2","=D3","=D4","=D5","=D6",
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"=D7","=D8","=D9","=DA","=DB","=DC","=DD","=DE",
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"=DF","=E0","=E1","=E2","=E3","=E4","=E5","=E6",
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"=E7","=E8","=E9","=EA","=EB","=EC","=ED","=EE",
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"=EF","=F0","=F1","=F2","=F3","=F4","=F5","=F6",
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"=F7","=F8","=F9","=FA","=FB","=FC","=FD","=FE",
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"=FF"
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);
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public static $qpKeysString =
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"\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0A\x0B\x0C\x0D\x0E\x0F\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1A\x1B\x1C\x1D\x1E\x1F\x7F\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8A\x8B\x8C\x8D\x8E\x8F\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9A\x9B\x9C\x9D\x9E\x9F\xA0\xA1\xA2\xA3\xA4\xA5\xA6\xA7\xA8\xA9\xAA\xAB\xAC\xAD\xAE\xAF\xB0\xB1\xB2\xB3\xB4\xB5\xB6\xB7\xB8\xB9\xBA\xBB\xBC\xBD\xBE\xBF\xC0\xC1\xC2\xC3\xC4\xC5\xC6\xC7\xC8\xC9\xCA\xCB\xCC\xCD\xCE\xCF\xD0\xD1\xD2\xD3\xD4\xD5\xD6\xD7\xD8\xD9\xDA\xDB\xDC\xDD\xDE\xDF\xE0\xE1\xE2\xE3\xE4\xE5\xE6\xE7\xE8\xE9\xEA\xEB\xEC\xED\xEE\xEF\xF0\xF1\xF2\xF3\xF4\xF5\xF6\xF7\xF8\xF9\xFA\xFB\xFC\xFD\xFE\xFF";
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/**
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* Check if the given string is "printable"
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*
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* Checks that a string contains no unprintable characters. If this returns
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* false, encode the string for secure delivery.
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*
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* @param string $str
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* @return boolean
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*/
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public static function isPrintable($str)
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{
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return (strcspn($str, self::$qpKeysString) == strlen($str));
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}
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/**
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* Encode a given string with the QUOTED_PRINTABLE mechanism and wrap the lines.
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*
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* @param string $str
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* @param int $lineLength Defaults to {@link LINELENGTH}
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* @param int $lineEnd Defaults to {@link LINEEND}
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* @return string
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*/
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public static function encodeQuotedPrintable($str,
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$lineLength = self::LINELENGTH,
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$lineEnd = self::LINEEND)
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{
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$out = '';
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$str = self::_encodeQuotedPrintable($str);
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// Split encoded text into separate lines
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while(strlen($str) > 0) {
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$ptr = strlen($str);
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if ($ptr > $lineLength) {
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$ptr = $lineLength;
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}
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// Ensure we are not splitting across an encoded character
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$pos = strrpos(substr($str, 0, $ptr), '=');
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if ($pos !== false && $pos >= $ptr - 2) {
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$ptr = $pos;
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}
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// Check if there is a space at the end of the line and rewind
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if ($ptr > 0 && $str[$ptr - 1] == ' ') {
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--$ptr;
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}
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// Add string and continue
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$out .= substr($str, 0, $ptr) . '=' . $lineEnd;
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$str = substr($str, $ptr);
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}
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$out = rtrim($out, $lineEnd);
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$out = rtrim($out, '=');
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return $out;
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}
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/**
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* Converts a string into quoted printable format.
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*
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* @param string $str
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* @return string
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*/
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private static function _encodeQuotedPrintable($str)
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{
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$str = str_replace('=', '=3D', $str);
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$str = str_replace(self::$qpKeys, self::$qpReplaceValues, $str);
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$str = rtrim($str);
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return $str;
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}
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/**
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* Encode a given string with the QUOTED_PRINTABLE mechanism for Mail Headers.
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*
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* Mail headers depend on an extended quoted printable algorithm otherwise
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* a range of bugs can occur.
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*
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* @param string $str
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* @param string $charset
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* @param int $lineLength Defaults to {@link LINELENGTH}
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* @param int $lineEnd Defaults to {@link LINEEND}
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* @return string
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*/
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public static function encodeQuotedPrintableHeader($str, $charset,
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$lineLength = self::LINELENGTH,
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$lineEnd = self::LINEEND)
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{
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// Reduce line-length by the length of the required delimiter, charsets and encoding
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$prefix = sprintf('=?%s?Q?', $charset);
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$lineLength = $lineLength-strlen($prefix)-3;
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$str = self::_encodeQuotedPrintable($str);
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// Mail-Header required chars have to be encoded also:
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$str = str_replace(array('?', ' ', '_', ','), array('=3F', '=20', '=5F', '=2C'), $str);
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// initialize first line, we need it anyways
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$lines = array(0 => "");
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// Split encoded text into separate lines
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$tmp = "";
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while(strlen($str) > 0) {
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$currentLine = max(count($lines)-1, 0);
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$token = self::getNextQuotedPrintableToken($str);
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$str = substr($str, strlen($token));
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$tmp .= $token;
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if($token == '=20') {
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// only if we have a single char token or space, we can append the
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// tempstring it to the current line or start a new line if necessary.
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if(strlen($lines[$currentLine].$tmp) > $lineLength) {
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$lines[$currentLine+1] = $tmp;
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} else {
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$lines[$currentLine] .= $tmp;
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}
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$tmp = "";
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}
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// don't forget to append the rest to the last line
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if(strlen($str) == 0) {
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$lines[$currentLine] .= $tmp;
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}
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}
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// assemble the lines together by pre- and appending delimiters, charset, encoding.
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for($i = 0; $i < count($lines); $i++) {
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$lines[$i] = " ".$prefix.$lines[$i]."?=";
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}
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$str = trim(implode($lineEnd, $lines));
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return $str;
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}
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/**
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* Retrieves the first token from a quoted printable string.
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*
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* @param string $str
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* @return string
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*/
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private static function getNextQuotedPrintableToken($str)
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{
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if(substr($str, 0, 1) == "=") {
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$token = substr($str, 0, 3);
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} else {
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$token = substr($str, 0, 1);
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}
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return $token;
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}
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/**
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* Encode a given string in mail header compatible base64 encoding.
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*
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* @param string $str
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* @param string $charset
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* @param int $lineLength Defaults to {@link LINELENGTH}
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* @param int $lineEnd Defaults to {@link LINEEND}
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* @return string
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*/
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public static function encodeBase64Header($str,
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$charset,
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$lineLength = self::LINELENGTH,
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$lineEnd = self::LINEEND)
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{
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$prefix = '=?' . $charset . '?B?';
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$suffix = '?=';
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$remainingLength = $lineLength - strlen($prefix) - strlen($suffix);
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$encodedValue = self::encodeBase64($str, $remainingLength, $lineEnd);
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$encodedValue = str_replace($lineEnd, $suffix . $lineEnd . ' ' . $prefix, $encodedValue);
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$encodedValue = $prefix . $encodedValue . $suffix;
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return $encodedValue;
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}
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/**
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* Encode a given string in base64 encoding and break lines
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* according to the maximum linelength.
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*
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* @param string $str
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* @param int $lineLength Defaults to {@link LINELENGTH}
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* @param int $lineEnd Defaults to {@link LINEEND}
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* @return string
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*/
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public static function encodeBase64($str,
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$lineLength = self::LINELENGTH,
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$lineEnd = self::LINEEND)
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{
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return rtrim(chunk_split(base64_encode($str), $lineLength, $lineEnd));
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}
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/**
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* Constructor
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*
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* @param null|string $boundary
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* @access public
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* @return void
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*/
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public function __construct($boundary = null)
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{
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// This string needs to be somewhat unique
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if ($boundary === null) {
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$this->_boundary = '=_' . md5(microtime(1) . self::$makeUnique++);
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} else {
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$this->_boundary = $boundary;
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}
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}
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/**
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* Encode the given string with the given encoding.
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*
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* @param string $str
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* @param string $encoding
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* @param string $EOL EOL string; defaults to {@link Zend_Mime::LINEEND}
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* @return string
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*/
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public static function encode($str, $encoding, $EOL = self::LINEEND)
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{
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switch ($encoding) {
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case self::ENCODING_BASE64:
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return self::encodeBase64($str, self::LINELENGTH, $EOL);
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case self::ENCODING_QUOTEDPRINTABLE:
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return self::encodeQuotedPrintable($str, self::LINELENGTH, $EOL);
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default:
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/**
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* @todo 7Bit and 8Bit is currently handled the same way.
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*/
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return $str;
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}
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}
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/**
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* Return a MIME boundary
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*
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* @access public
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* @return string
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*/
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public function boundary()
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{
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return $this->_boundary;
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}
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/**
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* Return a MIME boundary line
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*
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* @param mixed $EOL Defaults to {@link LINEEND}
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* @access public
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* @return string
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*/
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public function boundaryLine($EOL = self::LINEEND)
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{
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return $EOL . '--' . $this->_boundary . $EOL;
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}
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/**
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* Return MIME ending
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*
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* @access public
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* @return string
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*/
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public function mimeEnd($EOL = self::LINEEND)
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{
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return $EOL . '--' . $this->_boundary . '--' . $EOL;
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}
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}
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