[4414] | 1 | <?php |
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| 2 | /** |
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| 3 | * The Mail_mimePart class is used to create MIME E-mail messages |
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| 4 | * |
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| 5 | * This class enables you to manipulate and build a mime email |
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| 6 | * from the ground up. The Mail_Mime class is a userfriendly api |
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| 7 | * to this class for people who aren't interested in the internals |
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| 8 | * of mime mail. |
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| 9 | * This class however allows full control over the email. |
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| 10 | * |
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| 11 | * Compatible with PHP versions 4 and 5 |
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| 12 | * |
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| 13 | * LICENSE: This LICENSE is in the BSD license style. |
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| 14 | * Copyright (c) 2002-2003, Richard Heyes <richard@phpguru.org> |
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| 15 | * Copyright (c) 2003-2006, PEAR <pear-group@php.net> |
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| 16 | * All rights reserved. |
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| 17 | * |
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| 18 | * Redistribution and use in source and binary forms, with or |
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| 19 | * without modification, are permitted provided that the following |
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| 20 | * conditions are met: |
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| 21 | * |
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| 22 | * - Redistributions of source code must retain the above copyright |
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| 23 | * notice, this list of conditions and the following disclaimer. |
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| 24 | * - Redistributions in binary form must reproduce the above copyright |
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| 25 | * notice, this list of conditions and the following disclaimer in the |
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| 26 | * documentation and/or other materials provided with the distribution. |
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| 27 | * - Neither the name of the authors, nor the names of its contributors |
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| 28 | * may be used to endorse or promote products derived from this |
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| 29 | * software without specific prior written permission. |
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| 30 | * |
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| 31 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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| 32 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 33 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 34 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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| 35 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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| 36 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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| 37 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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| 38 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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| 39 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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| 40 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
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| 41 | * THE POSSIBILITY OF SUCH DAMAGE. |
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| 42 | * |
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| 43 | * @category Mail |
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| 44 | * @package Mail_Mime |
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| 45 | * @author Richard Heyes <richard@phpguru.org> |
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| 46 | * @author Cipriano Groenendal <cipri@php.net> |
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| 47 | * @author Sean Coates <sean@php.net> |
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| 48 | * @author Aleksander Machniak <alec@php.net> |
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| 49 | * @copyright 2003-2006 PEAR <pear-group@php.net> |
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| 50 | * @license http://www.opensource.org/licenses/bsd-license.php BSD License |
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| 51 | * @version CVS: $Id: mimePart.php 305690 2010-11-23 12:41:00Z alec $ |
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| 52 | * @link http://pear.php.net/package/Mail_mime |
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| 53 | */ |
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| 54 | |
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| 55 | |
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| 56 | /** |
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| 57 | * The Mail_mimePart class is used to create MIME E-mail messages |
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| 58 | * |
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| 59 | * This class enables you to manipulate and build a mime email |
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| 60 | * from the ground up. The Mail_Mime class is a userfriendly api |
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| 61 | * to this class for people who aren't interested in the internals |
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| 62 | * of mime mail. |
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| 63 | * This class however allows full control over the email. |
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| 64 | * |
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| 65 | * @category Mail |
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| 66 | * @package Mail_Mime |
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| 67 | * @author Richard Heyes <richard@phpguru.org> |
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| 68 | * @author Cipriano Groenendal <cipri@php.net> |
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| 69 | * @author Sean Coates <sean@php.net> |
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| 70 | * @author Aleksander Machniak <alec@php.net> |
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| 71 | * @copyright 2003-2006 PEAR <pear-group@php.net> |
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| 72 | * @license http://www.opensource.org/licenses/bsd-license.php BSD License |
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| 73 | * @version Release: @package_version@ |
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| 74 | * @link http://pear.php.net/package/Mail_mime |
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| 75 | */ |
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| 76 | class Mail_mimePart |
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| 77 | { |
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| 78 | /** |
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| 79 | * The encoding type of this part |
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| 80 | * |
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| 81 | * @var string |
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| 82 | * @access private |
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| 83 | */ |
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| 84 | var $_encoding; |
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| 85 | |
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| 86 | /** |
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| 87 | * An array of subparts |
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| 88 | * |
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| 89 | * @var array |
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| 90 | * @access private |
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| 91 | */ |
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| 92 | var $_subparts; |
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| 93 | |
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| 94 | /** |
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| 95 | * The output of this part after being built |
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| 96 | * |
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| 97 | * @var string |
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| 98 | * @access private |
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| 99 | */ |
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| 100 | var $_encoded; |
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| 101 | |
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| 102 | /** |
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| 103 | * Headers for this part |
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| 104 | * |
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| 105 | * @var array |
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| 106 | * @access private |
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| 107 | */ |
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| 108 | var $_headers; |
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| 109 | |
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| 110 | /** |
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| 111 | * The body of this part (not encoded) |
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| 112 | * |
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| 113 | * @var string |
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| 114 | * @access private |
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| 115 | */ |
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| 116 | var $_body; |
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| 117 | |
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| 118 | /** |
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| 119 | * The location of file with body of this part (not encoded) |
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| 120 | * |
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| 121 | * @var string |
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| 122 | * @access private |
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| 123 | */ |
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| 124 | var $_body_file; |
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| 125 | |
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| 126 | /** |
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| 127 | * The end-of-line sequence |
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| 128 | * |
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| 129 | * @var string |
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| 130 | * @access private |
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| 131 | */ |
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| 132 | var $_eol = "\r\n"; |
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| 133 | |
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| 134 | /** |
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| 135 | * Constructor. |
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| 136 | * |
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| 137 | * Sets up the object. |
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| 138 | * |
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| 139 | * @param string $body The body of the mime part if any. |
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| 140 | * @param array $params An associative array of optional parameters: |
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| 141 | * content_type - The content type for this part eg multipart/mixed |
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| 142 | * encoding - The encoding to use, 7bit, 8bit, |
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| 143 | * base64, or quoted-printable |
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| 144 | * charset - Content character set |
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| 145 | * cid - Content ID to apply |
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| 146 | * disposition - Content disposition, inline or attachment |
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| 147 | * dfilename - Filename parameter for content disposition |
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| 148 | * description - Content description |
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| 149 | * name_encoding - Encoding of the attachment name (Content-Type) |
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| 150 | * By default filenames are encoded using RFC2231 |
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| 151 | * Here you can set RFC2047 encoding (quoted-printable |
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| 152 | * or base64) instead |
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| 153 | * filename_encoding - Encoding of the attachment filename (Content-Disposition) |
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| 154 | * See 'name_encoding' |
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| 155 | * headers_charset - Charset of the headers e.g. filename, description. |
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| 156 | * If not set, 'charset' will be used |
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| 157 | * eol - End of line sequence. Default: "\r\n" |
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| 158 | * body_file - Location of file with part's body (instead of $body) |
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| 159 | * |
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| 160 | * @access public |
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| 161 | */ |
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| 162 | function Mail_mimePart($body = '', $params = array()) |
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| 163 | { |
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| 164 | if (!empty($params['eol'])) { |
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| 165 | $this->_eol = $params['eol']; |
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| 166 | } else if (defined('MAIL_MIMEPART_CRLF')) { // backward-copat. |
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| 167 | $this->_eol = MAIL_MIMEPART_CRLF; |
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| 168 | } |
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| 169 | |
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| 170 | foreach ($params as $key => $value) { |
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| 171 | switch ($key) { |
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| 172 | case 'encoding': |
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| 173 | $this->_encoding = $value; |
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| 174 | $headers['Content-Transfer-Encoding'] = $value; |
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| 175 | break; |
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| 176 | |
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| 177 | case 'cid': |
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| 178 | $headers['Content-ID'] = '<' . $value . '>'; |
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| 179 | break; |
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| 180 | |
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| 181 | case 'location': |
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| 182 | $headers['Content-Location'] = $value; |
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| 183 | break; |
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| 184 | |
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| 185 | case 'body_file': |
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| 186 | $this->_body_file = $value; |
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| 187 | break; |
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| 188 | } |
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| 189 | } |
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| 190 | |
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| 191 | // Default content-type |
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| 192 | if (empty($params['content_type'])) { |
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| 193 | $params['content_type'] = 'text/plain'; |
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| 194 | } |
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| 195 | |
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| 196 | // Content-Type |
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| 197 | $headers['Content-Type'] = $params['content_type']; |
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| 198 | if (!empty($params['charset'])) { |
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| 199 | $charset = "charset={$params['charset']}"; |
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| 200 | // place charset parameter in the same line, if possible |
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| 201 | if ((strlen($headers['Content-Type']) + strlen($charset) + 16) <= 76) { |
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| 202 | $headers['Content-Type'] .= '; '; |
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| 203 | } else { |
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| 204 | $headers['Content-Type'] .= ';' . $this->_eol . ' '; |
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| 205 | } |
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| 206 | $headers['Content-Type'] .= $charset; |
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| 207 | |
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| 208 | // Default headers charset |
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| 209 | if (!isset($params['headers_charset'])) { |
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| 210 | $params['headers_charset'] = $params['charset']; |
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| 211 | } |
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| 212 | } |
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| 213 | if (!empty($params['filename'])) { |
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| 214 | $headers['Content-Type'] .= ';' . $this->_eol; |
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| 215 | $headers['Content-Type'] .= $this->_buildHeaderParam( |
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| 216 | 'name', $params['filename'], |
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| 217 | !empty($params['headers_charset']) ? $params['headers_charset'] : 'US-ASCII', |
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| 218 | !empty($params['language']) ? $params['language'] : null, |
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| 219 | !empty($params['name_encoding']) ? $params['name_encoding'] : null |
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| 220 | ); |
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| 221 | } |
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| 222 | |
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| 223 | // Content-Disposition |
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| 224 | if (!empty($params['disposition'])) { |
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| 225 | $headers['Content-Disposition'] = $params['disposition']; |
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| 226 | if (!empty($params['filename'])) { |
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| 227 | $headers['Content-Disposition'] .= ';' . $this->_eol; |
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| 228 | $headers['Content-Disposition'] .= $this->_buildHeaderParam( |
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| 229 | 'filename', $params['filename'], |
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| 230 | !empty($params['headers_charset']) ? $params['headers_charset'] : 'US-ASCII', |
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| 231 | !empty($params['language']) ? $params['language'] : null, |
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| 232 | !empty($params['filename_encoding']) ? $params['filename_encoding'] : null |
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| 233 | ); |
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| 234 | } |
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| 235 | } |
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| 236 | |
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| 237 | if (!empty($params['description'])) { |
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| 238 | $headers['Content-Description'] = $this->encodeHeader( |
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| 239 | 'Content-Description', $params['description'], |
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| 240 | !empty($params['headers_charset']) ? $params['headers_charset'] : 'US-ASCII', |
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| 241 | !empty($params['name_encoding']) ? $params['name_encoding'] : 'quoted-printable', |
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| 242 | $this->_eol |
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| 243 | ); |
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| 244 | } |
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| 245 | |
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| 246 | // Default encoding |
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| 247 | if (!isset($this->_encoding)) { |
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| 248 | $this->_encoding = '7bit'; |
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| 249 | } |
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| 250 | |
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| 251 | // Assign stuff to member variables |
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| 252 | $this->_encoded = array(); |
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| 253 | $this->_headers = $headers; |
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| 254 | $this->_body = $body; |
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| 255 | } |
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| 256 | |
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| 257 | /** |
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| 258 | * Encodes and returns the email. Also stores |
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| 259 | * it in the encoded member variable |
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| 260 | * |
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| 261 | * @param string $boundary Pre-defined boundary string |
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| 262 | * |
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| 263 | * @return An associative array containing two elements, |
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| 264 | * body and headers. The headers element is itself |
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| 265 | * an indexed array. On error returns PEAR error object. |
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| 266 | * @access public |
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| 267 | */ |
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| 268 | function encode($boundary=null) |
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| 269 | { |
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| 270 | $encoded =& $this->_encoded; |
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| 271 | |
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| 272 | if (count($this->_subparts)) { |
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| 273 | $boundary = $boundary ? $boundary : '=_' . md5(rand() . microtime()); |
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| 274 | $eol = $this->_eol; |
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| 275 | |
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| 276 | $this->_headers['Content-Type'] .= ";$eol boundary=\"$boundary\""; |
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| 277 | |
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| 278 | $encoded['body'] = ''; |
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| 279 | |
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| 280 | for ($i = 0; $i < count($this->_subparts); $i++) { |
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| 281 | $encoded['body'] .= '--' . $boundary . $eol; |
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| 282 | $tmp = $this->_subparts[$i]->encode(); |
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| 283 | if (PEAR::isError($tmp)) { |
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| 284 | return $tmp; |
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| 285 | } |
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| 286 | foreach ($tmp['headers'] as $key => $value) { |
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| 287 | $encoded['body'] .= $key . ': ' . $value . $eol; |
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| 288 | } |
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| 289 | $encoded['body'] .= $eol . $tmp['body'] . $eol; |
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| 290 | } |
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| 291 | |
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| 292 | $encoded['body'] .= '--' . $boundary . '--' . $eol; |
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| 293 | |
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| 294 | } else if ($this->_body) { |
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| 295 | $encoded['body'] = $this->_getEncodedData($this->_body, $this->_encoding); |
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| 296 | } else if ($this->_body_file) { |
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| 297 | // Temporarily reset magic_quotes_runtime for file reads and writes |
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| 298 | if ($magic_quote_setting = get_magic_quotes_runtime()) { |
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| 299 | @ini_set('magic_quotes_runtime', 0); |
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| 300 | } |
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| 301 | $body = $this->_getEncodedDataFromFile($this->_body_file, $this->_encoding); |
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| 302 | if ($magic_quote_setting) { |
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| 303 | @ini_set('magic_quotes_runtime', $magic_quote_setting); |
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| 304 | } |
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| 305 | |
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| 306 | if (PEAR::isError($body)) { |
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| 307 | return $body; |
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| 308 | } |
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| 309 | $encoded['body'] = $body; |
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| 310 | } else { |
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| 311 | $encoded['body'] = ''; |
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| 312 | } |
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| 313 | |
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| 314 | // Add headers to $encoded |
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| 315 | $encoded['headers'] =& $this->_headers; |
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| 316 | |
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| 317 | return $encoded; |
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| 318 | } |
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| 319 | |
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| 320 | /** |
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| 321 | * Encodes and saves the email into file. File must exist. |
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| 322 | * Data will be appended to the file. |
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| 323 | * |
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| 324 | * @param string $filename Output file location |
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| 325 | * @param string $boundary Pre-defined boundary string |
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| 326 | * @param boolean $skip_head True if you don't want to save headers |
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| 327 | * |
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| 328 | * @return array An associative array containing message headers |
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| 329 | * or PEAR error object |
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| 330 | * @access public |
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| 331 | * @since 1.6.0 |
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| 332 | */ |
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| 333 | function encodeToFile($filename, $boundary=null, $skip_head=false) |
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| 334 | { |
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| 335 | if (file_exists($filename) && !is_writable($filename)) { |
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| 336 | $err = PEAR::raiseError('File is not writeable: ' . $filename); |
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| 337 | return $err; |
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| 338 | } |
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| 339 | |
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| 340 | if (!($fh = fopen($filename, 'ab'))) { |
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| 341 | $err = PEAR::raiseError('Unable to open file: ' . $filename); |
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| 342 | return $err; |
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| 343 | } |
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| 344 | |
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| 345 | // Temporarily reset magic_quotes_runtime for file reads and writes |
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| 346 | if ($magic_quote_setting = get_magic_quotes_runtime()) { |
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| 347 | @ini_set('magic_quotes_runtime', 0); |
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| 348 | } |
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| 349 | |
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| 350 | $res = $this->_encodePartToFile($fh, $boundary, $skip_head); |
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| 351 | |
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| 352 | fclose($fh); |
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| 353 | |
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| 354 | if ($magic_quote_setting) { |
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| 355 | @ini_set('magic_quotes_runtime', $magic_quote_setting); |
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| 356 | } |
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| 357 | |
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| 358 | return PEAR::isError($res) ? $res : $this->_headers; |
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| 359 | } |
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| 360 | |
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| 361 | /** |
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| 362 | * Encodes given email part into file |
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| 363 | * |
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| 364 | * @param string $fh Output file handle |
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| 365 | * @param string $boundary Pre-defined boundary string |
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| 366 | * @param boolean $skip_head True if you don't want to save headers |
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| 367 | * |
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| 368 | * @return array True on sucess or PEAR error object |
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| 369 | * @access private |
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| 370 | */ |
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| 371 | function _encodePartToFile($fh, $boundary=null, $skip_head=false) |
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| 372 | { |
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| 373 | $eol = $this->_eol; |
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| 374 | |
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| 375 | if (count($this->_subparts)) { |
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| 376 | $boundary = $boundary ? $boundary : '=_' . md5(rand() . microtime()); |
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| 377 | $this->_headers['Content-Type'] .= ";$eol boundary=\"$boundary\""; |
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| 378 | } |
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| 379 | |
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| 380 | if (!$skip_head) { |
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| 381 | foreach ($this->_headers as $key => $value) { |
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| 382 | fwrite($fh, $key . ': ' . $value . $eol); |
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| 383 | } |
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| 384 | $f_eol = $eol; |
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| 385 | } else { |
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| 386 | $f_eol = ''; |
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| 387 | } |
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| 388 | |
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| 389 | if (count($this->_subparts)) { |
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| 390 | for ($i = 0; $i < count($this->_subparts); $i++) { |
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| 391 | fwrite($fh, $f_eol . '--' . $boundary . $eol); |
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| 392 | $res = $this->_subparts[$i]->_encodePartToFile($fh); |
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| 393 | if (PEAR::isError($res)) { |
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| 394 | return $res; |
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| 395 | } |
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| 396 | $f_eol = $eol; |
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| 397 | } |
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| 398 | |
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| 399 | fwrite($fh, $eol . '--' . $boundary . '--' . $eol); |
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| 400 | |
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| 401 | } else if ($this->_body) { |
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| 402 | fwrite($fh, $f_eol . $this->_getEncodedData($this->_body, $this->_encoding)); |
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| 403 | } else if ($this->_body_file) { |
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| 404 | fwrite($fh, $f_eol); |
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| 405 | $res = $this->_getEncodedDataFromFile( |
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| 406 | $this->_body_file, $this->_encoding, $fh |
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| 407 | ); |
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| 408 | if (PEAR::isError($res)) { |
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| 409 | return $res; |
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| 410 | } |
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| 411 | } |
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| 412 | |
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| 413 | return true; |
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| 414 | } |
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| 415 | |
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| 416 | /** |
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| 417 | * Adds a subpart to current mime part and returns |
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| 418 | * a reference to it |
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| 419 | * |
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| 420 | * @param string $body The body of the subpart, if any. |
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| 421 | * @param array $params The parameters for the subpart, same |
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| 422 | * as the $params argument for constructor. |
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| 423 | * |
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| 424 | * @return Mail_mimePart A reference to the part you just added. It is |
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| 425 | * crucial if using multipart/* in your subparts that |
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| 426 | * you use =& in your script when calling this function, |
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| 427 | * otherwise you will not be able to add further subparts. |
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| 428 | * @access public |
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| 429 | */ |
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| 430 | function &addSubpart($body, $params) |
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| 431 | { |
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| 432 | $this->_subparts[] = new Mail_mimePart($body, $params); |
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| 433 | return $this->_subparts[count($this->_subparts) - 1]; |
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| 434 | } |
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| 435 | |
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| 436 | /** |
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| 437 | * Returns encoded data based upon encoding passed to it |
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| 438 | * |
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| 439 | * @param string $data The data to encode. |
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| 440 | * @param string $encoding The encoding type to use, 7bit, base64, |
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| 441 | * or quoted-printable. |
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| 442 | * |
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| 443 | * @return string |
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| 444 | * @access private |
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| 445 | */ |
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| 446 | function _getEncodedData($data, $encoding) |
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| 447 | { |
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| 448 | switch ($encoding) { |
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| 449 | case 'quoted-printable': |
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| 450 | return $this->_quotedPrintableEncode($data); |
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| 451 | break; |
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| 452 | |
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| 453 | case 'base64': |
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| 454 | return rtrim(chunk_split(base64_encode($data), 76, $this->_eol)); |
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| 455 | break; |
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| 456 | |
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| 457 | case '8bit': |
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| 458 | case '7bit': |
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| 459 | default: |
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| 460 | return $data; |
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| 461 | } |
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| 462 | } |
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| 463 | |
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| 464 | /** |
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| 465 | * Returns encoded data based upon encoding passed to it |
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| 466 | * |
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| 467 | * @param string $filename Data file location |
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| 468 | * @param string $encoding The encoding type to use, 7bit, base64, |
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| 469 | * or quoted-printable. |
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| 470 | * @param resource $fh Output file handle. If set, data will be |
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| 471 | * stored into it instead of returning it |
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| 472 | * |
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| 473 | * @return string Encoded data or PEAR error object |
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| 474 | * @access private |
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| 475 | */ |
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| 476 | function _getEncodedDataFromFile($filename, $encoding, $fh=null) |
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| 477 | { |
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| 478 | if (!is_readable($filename)) { |
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| 479 | $err = PEAR::raiseError('Unable to read file: ' . $filename); |
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| 480 | return $err; |
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| 481 | } |
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| 482 | |
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| 483 | if (!($fd = fopen($filename, 'rb'))) { |
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| 484 | $err = PEAR::raiseError('Could not open file: ' . $filename); |
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| 485 | return $err; |
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| 486 | } |
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| 487 | |
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| 488 | $data = ''; |
---|
| 489 | |
---|
| 490 | switch ($encoding) { |
---|
| 491 | case 'quoted-printable': |
---|
| 492 | while (!feof($fd)) { |
---|
| 493 | $buffer = $this->_quotedPrintableEncode(fgets($fd)); |
---|
| 494 | if ($fh) { |
---|
| 495 | fwrite($fh, $buffer); |
---|
| 496 | } else { |
---|
| 497 | $data .= $buffer; |
---|
| 498 | } |
---|
| 499 | } |
---|
| 500 | break; |
---|
| 501 | |
---|
| 502 | case 'base64': |
---|
| 503 | while (!feof($fd)) { |
---|
| 504 | // Should read in a multiple of 57 bytes so that |
---|
| 505 | // the output is 76 bytes per line. Don't use big chunks |
---|
| 506 | // because base64 encoding is memory expensive |
---|
| 507 | $buffer = fread($fd, 57 * 9198); // ca. 0.5 MB |
---|
| 508 | $buffer = base64_encode($buffer); |
---|
| 509 | $buffer = chunk_split($buffer, 76, $this->_eol); |
---|
| 510 | if (feof($fd)) { |
---|
| 511 | $buffer = rtrim($buffer); |
---|
| 512 | } |
---|
| 513 | |
---|
| 514 | if ($fh) { |
---|
| 515 | fwrite($fh, $buffer); |
---|
| 516 | } else { |
---|
| 517 | $data .= $buffer; |
---|
| 518 | } |
---|
| 519 | } |
---|
| 520 | break; |
---|
| 521 | |
---|
| 522 | case '8bit': |
---|
| 523 | case '7bit': |
---|
| 524 | default: |
---|
| 525 | while (!feof($fd)) { |
---|
| 526 | $buffer = fread($fd, 1048576); // 1 MB |
---|
| 527 | if ($fh) { |
---|
| 528 | fwrite($fh, $buffer); |
---|
| 529 | } else { |
---|
| 530 | $data .= $buffer; |
---|
| 531 | } |
---|
| 532 | } |
---|
| 533 | } |
---|
| 534 | |
---|
| 535 | fclose($fd); |
---|
| 536 | |
---|
| 537 | if (!$fh) { |
---|
| 538 | return $data; |
---|
| 539 | } |
---|
| 540 | } |
---|
| 541 | |
---|
| 542 | /** |
---|
| 543 | * Encodes data to quoted-printable standard. |
---|
| 544 | * |
---|
| 545 | * @param string $input The data to encode |
---|
| 546 | * @param int $line_max Optional max line length. Should |
---|
| 547 | * not be more than 76 chars |
---|
| 548 | * |
---|
| 549 | * @return string Encoded data |
---|
| 550 | * |
---|
| 551 | * @access private |
---|
| 552 | */ |
---|
| 553 | function _quotedPrintableEncode($input , $line_max = 76) |
---|
| 554 | { |
---|
| 555 | $eol = $this->_eol; |
---|
| 556 | /* |
---|
| 557 | // imap_8bit() is extremely fast, but doesn't handle properly some characters |
---|
| 558 | if (function_exists('imap_8bit') && $line_max == 76) { |
---|
| 559 | $input = preg_replace('/\r?\n/', "\r\n", $input); |
---|
| 560 | $input = imap_8bit($input); |
---|
| 561 | if ($eol != "\r\n") { |
---|
| 562 | $input = str_replace("\r\n", $eol, $input); |
---|
| 563 | } |
---|
| 564 | return $input; |
---|
| 565 | } |
---|
| 566 | */ |
---|
| 567 | $lines = preg_split("/\r?\n/", $input); |
---|
| 568 | $escape = '='; |
---|
| 569 | $output = ''; |
---|
| 570 | |
---|
| 571 | while (list($idx, $line) = each($lines)) { |
---|
| 572 | $newline = ''; |
---|
| 573 | $i = 0; |
---|
| 574 | |
---|
| 575 | while (isset($line[$i])) { |
---|
| 576 | $char = $line[$i]; |
---|
| 577 | $dec = ord($char); |
---|
| 578 | $i++; |
---|
| 579 | |
---|
| 580 | if (($dec == 32) && (!isset($line[$i]))) { |
---|
| 581 | // convert space at eol only |
---|
| 582 | $char = '=20'; |
---|
| 583 | } elseif ($dec == 9 && isset($line[$i])) { |
---|
| 584 | ; // Do nothing if a TAB is not on eol |
---|
| 585 | } elseif (($dec == 61) || ($dec < 32) || ($dec > 126)) { |
---|
| 586 | $char = $escape . sprintf('%02X', $dec); |
---|
| 587 | } elseif (($dec == 46) && (($newline == '') |
---|
| 588 | || ((strlen($newline) + strlen("=2E")) >= $line_max)) |
---|
| 589 | ) { |
---|
| 590 | // Bug #9722: convert full-stop at bol, |
---|
| 591 | // some Windows servers need this, won't break anything (cipri) |
---|
| 592 | // Bug #11731: full-stop at bol also needs to be encoded |
---|
| 593 | // if this line would push us over the line_max limit. |
---|
| 594 | $char = '=2E'; |
---|
| 595 | } |
---|
| 596 | |
---|
| 597 | // Note, when changing this line, also change the ($dec == 46) |
---|
| 598 | // check line, as it mimics this line due to Bug #11731 |
---|
| 599 | // EOL is not counted |
---|
| 600 | if ((strlen($newline) + strlen($char)) >= $line_max) { |
---|
| 601 | // soft line break; " =\r\n" is okay |
---|
| 602 | $output .= $newline . $escape . $eol; |
---|
| 603 | $newline = ''; |
---|
| 604 | } |
---|
| 605 | $newline .= $char; |
---|
| 606 | } // end of for |
---|
| 607 | $output .= $newline . $eol; |
---|
| 608 | unset($lines[$idx]); |
---|
| 609 | } |
---|
| 610 | // Don't want last crlf |
---|
| 611 | $output = substr($output, 0, -1 * strlen($eol)); |
---|
| 612 | return $output; |
---|
| 613 | } |
---|
| 614 | |
---|
| 615 | /** |
---|
| 616 | * Encodes the paramater of a header. |
---|
| 617 | * |
---|
| 618 | * @param string $name The name of the header-parameter |
---|
| 619 | * @param string $value The value of the paramter |
---|
| 620 | * @param string $charset The characterset of $value |
---|
| 621 | * @param string $language The language used in $value |
---|
| 622 | * @param string $encoding Parameter encoding. If not set, parameter value |
---|
| 623 | * is encoded according to RFC2231 |
---|
| 624 | * @param int $maxLength The maximum length of a line. Defauls to 75 |
---|
| 625 | * |
---|
| 626 | * @return string |
---|
| 627 | * |
---|
| 628 | * @access private |
---|
| 629 | */ |
---|
| 630 | function _buildHeaderParam($name, $value, $charset=null, $language=null, |
---|
| 631 | $encoding=null, $maxLength=75 |
---|
| 632 | ) { |
---|
| 633 | // RFC 2045: |
---|
| 634 | // value needs encoding if contains non-ASCII chars or is longer than 78 chars |
---|
| 635 | if (!preg_match('#[^\x20-\x7E]#', $value)) { |
---|
| 636 | $token_regexp = '#([^\x21,\x23-\x27,\x2A,\x2B,\x2D' |
---|
| 637 | . ',\x2E,\x30-\x39,\x41-\x5A,\x5E-\x7E])#'; |
---|
| 638 | if (!preg_match($token_regexp, $value)) { |
---|
| 639 | // token |
---|
| 640 | if (strlen($name) + strlen($value) + 3 <= $maxLength) { |
---|
| 641 | return " {$name}={$value}"; |
---|
| 642 | } |
---|
| 643 | } else { |
---|
| 644 | // quoted-string |
---|
| 645 | $quoted = addcslashes($value, '\\"'); |
---|
| 646 | if (strlen($name) + strlen($quoted) + 5 <= $maxLength) { |
---|
| 647 | return " {$name}=\"{$quoted}\""; |
---|
| 648 | } |
---|
| 649 | } |
---|
| 650 | } |
---|
| 651 | |
---|
| 652 | // RFC2047: use quoted-printable/base64 encoding |
---|
| 653 | if ($encoding == 'quoted-printable' || $encoding == 'base64') { |
---|
| 654 | return $this->_buildRFC2047Param($name, $value, $charset, $encoding); |
---|
| 655 | } |
---|
| 656 | |
---|
| 657 | // RFC2231: |
---|
| 658 | $encValue = preg_replace_callback( |
---|
| 659 | '/([^\x21,\x23,\x24,\x26,\x2B,\x2D,\x2E,\x30-\x39,\x41-\x5A,\x5E-\x7E])/', |
---|
| 660 | array($this, '_encodeReplaceCallback'), $value |
---|
| 661 | ); |
---|
| 662 | $value = "$charset'$language'$encValue"; |
---|
| 663 | |
---|
| 664 | $header = " {$name}*={$value}"; |
---|
| 665 | if (strlen($header) <= $maxLength) { |
---|
| 666 | return $header; |
---|
| 667 | } |
---|
| 668 | |
---|
| 669 | $preLength = strlen(" {$name}*0*="); |
---|
| 670 | $maxLength = max(16, $maxLength - $preLength - 3); |
---|
| 671 | $maxLengthReg = "|(.{0,$maxLength}[^\%][^\%])|"; |
---|
| 672 | |
---|
| 673 | $headers = array(); |
---|
| 674 | $headCount = 0; |
---|
| 675 | while ($value) { |
---|
| 676 | $matches = array(); |
---|
| 677 | $found = preg_match($maxLengthReg, $value, $matches); |
---|
| 678 | if ($found) { |
---|
| 679 | $headers[] = " {$name}*{$headCount}*={$matches[0]}"; |
---|
| 680 | $value = substr($value, strlen($matches[0])); |
---|
| 681 | } else { |
---|
| 682 | $headers[] = " {$name}*{$headCount}*={$value}"; |
---|
| 683 | $value = ''; |
---|
| 684 | } |
---|
| 685 | $headCount++; |
---|
| 686 | } |
---|
| 687 | |
---|
| 688 | $headers = implode(';' . $this->_eol, $headers); |
---|
| 689 | return $headers; |
---|
| 690 | } |
---|
| 691 | |
---|
| 692 | /** |
---|
| 693 | * Encodes header parameter as per RFC2047 if needed |
---|
| 694 | * |
---|
| 695 | * @param string $name The parameter name |
---|
| 696 | * @param string $value The parameter value |
---|
| 697 | * @param string $charset The parameter charset |
---|
| 698 | * @param string $encoding Encoding type (quoted-printable or base64) |
---|
| 699 | * @param int $maxLength Encoded parameter max length. Default: 76 |
---|
| 700 | * |
---|
| 701 | * @return string Parameter line |
---|
| 702 | * @access private |
---|
| 703 | */ |
---|
| 704 | function _buildRFC2047Param($name, $value, $charset, |
---|
| 705 | $encoding='quoted-printable', $maxLength=76 |
---|
| 706 | ) { |
---|
| 707 | // WARNING: RFC 2047 says: "An 'encoded-word' MUST NOT be used in |
---|
| 708 | // parameter of a MIME Content-Type or Content-Disposition field", |
---|
| 709 | // but... it's supported by many clients/servers |
---|
| 710 | $quoted = ''; |
---|
| 711 | |
---|
| 712 | if ($encoding == 'base64') { |
---|
| 713 | $value = base64_encode($value); |
---|
| 714 | $prefix = '=?' . $charset . '?B?'; |
---|
| 715 | $suffix = '?='; |
---|
| 716 | |
---|
| 717 | // 2 x SPACE, 2 x '"', '=', ';' |
---|
| 718 | $add_len = strlen($prefix . $suffix) + strlen($name) + 6; |
---|
| 719 | $len = $add_len + strlen($value); |
---|
| 720 | |
---|
| 721 | while ($len > $maxLength) { |
---|
| 722 | // We can cut base64-encoded string every 4 characters |
---|
| 723 | $real_len = floor(($maxLength - $add_len) / 4) * 4; |
---|
| 724 | $_quote = substr($value, 0, $real_len); |
---|
| 725 | $value = substr($value, $real_len); |
---|
| 726 | |
---|
| 727 | $quoted .= $prefix . $_quote . $suffix . $this->_eol . ' '; |
---|
| 728 | $add_len = strlen($prefix . $suffix) + 4; // 2 x SPACE, '"', ';' |
---|
| 729 | $len = strlen($value) + $add_len; |
---|
| 730 | } |
---|
| 731 | $quoted .= $prefix . $value . $suffix; |
---|
| 732 | |
---|
| 733 | } else { |
---|
| 734 | // quoted-printable |
---|
| 735 | $value = $this->encodeQP($value); |
---|
| 736 | $prefix = '=?' . $charset . '?Q?'; |
---|
| 737 | $suffix = '?='; |
---|
| 738 | |
---|
| 739 | // 2 x SPACE, 2 x '"', '=', ';' |
---|
| 740 | $add_len = strlen($prefix . $suffix) + strlen($name) + 6; |
---|
| 741 | $len = $add_len + strlen($value); |
---|
| 742 | |
---|
| 743 | while ($len > $maxLength) { |
---|
| 744 | $length = $maxLength - $add_len; |
---|
| 745 | // don't break any encoded letters |
---|
| 746 | if (preg_match("/^(.{0,$length}[^\=][^\=])/", $value, $matches)) { |
---|
| 747 | $_quote = $matches[1]; |
---|
| 748 | } |
---|
| 749 | |
---|
| 750 | $quoted .= $prefix . $_quote . $suffix . $this->_eol . ' '; |
---|
| 751 | $value = substr($value, strlen($_quote)); |
---|
| 752 | $add_len = strlen($prefix . $suffix) + 4; // 2 x SPACE, '"', ';' |
---|
| 753 | $len = strlen($value) + $add_len; |
---|
| 754 | } |
---|
| 755 | |
---|
| 756 | $quoted .= $prefix . $value . $suffix; |
---|
| 757 | } |
---|
| 758 | |
---|
| 759 | return " {$name}=\"{$quoted}\""; |
---|
| 760 | } |
---|
| 761 | |
---|
| 762 | /** |
---|
| 763 | * Encodes a header as per RFC2047 |
---|
| 764 | * |
---|
| 765 | * @param string $name The header name |
---|
| 766 | * @param string $value The header data to encode |
---|
| 767 | * @param string $charset Character set name |
---|
| 768 | * @param string $encoding Encoding name (base64 or quoted-printable) |
---|
| 769 | * @param string $eol End-of-line sequence. Default: "\r\n" |
---|
| 770 | * |
---|
| 771 | * @return string Encoded header data (without a name) |
---|
| 772 | * @access public |
---|
| 773 | * @since 1.6.1 |
---|
| 774 | */ |
---|
| 775 | function encodeHeader($name, $value, $charset='ISO-8859-1', |
---|
| 776 | $encoding='quoted-printable', $eol="\r\n" |
---|
| 777 | ) { |
---|
| 778 | // Structured headers |
---|
| 779 | $comma_headers = array( |
---|
| 780 | 'from', 'to', 'cc', 'bcc', 'sender', 'reply-to', |
---|
| 781 | 'resent-from', 'resent-to', 'resent-cc', 'resent-bcc', |
---|
| 782 | 'resent-sender', 'resent-reply-to', |
---|
| 783 | 'return-receipt-to', 'disposition-notification-to', |
---|
| 784 | ); |
---|
| 785 | $other_headers = array( |
---|
| 786 | 'references', 'in-reply-to', 'message-id', 'resent-message-id', |
---|
| 787 | ); |
---|
| 788 | |
---|
| 789 | $name = strtolower($name); |
---|
| 790 | |
---|
| 791 | if (in_array($name, $comma_headers)) { |
---|
| 792 | $separator = ','; |
---|
| 793 | } else if (in_array($name, $other_headers)) { |
---|
| 794 | $separator = ' '; |
---|
| 795 | } |
---|
| 796 | |
---|
| 797 | if (!$charset) { |
---|
| 798 | $charset = 'ISO-8859-1'; |
---|
| 799 | } |
---|
| 800 | |
---|
| 801 | // Structured header (make sure addr-spec inside is not encoded) |
---|
| 802 | if (!empty($separator)) { |
---|
| 803 | $parts = Mail_mimePart::_explodeQuotedString($separator, $value); |
---|
| 804 | $value = ''; |
---|
| 805 | |
---|
| 806 | foreach ($parts as $part) { |
---|
| 807 | $part = preg_replace('/\r?\n[\s\t]*/', $eol . ' ', $part); |
---|
| 808 | $part = trim($part); |
---|
| 809 | |
---|
| 810 | if (!$part) { |
---|
| 811 | continue; |
---|
| 812 | } |
---|
| 813 | if ($value) { |
---|
| 814 | $value .= $separator==',' ? $separator.' ' : ' '; |
---|
| 815 | } else { |
---|
| 816 | $value = $name . ': '; |
---|
| 817 | } |
---|
| 818 | |
---|
| 819 | // let's find phrase (name) and/or addr-spec |
---|
| 820 | if (preg_match('/^<\S+@\S+>$/', $part)) { |
---|
| 821 | $value .= $part; |
---|
| 822 | } else if (preg_match('/^\S+@\S+$/', $part)) { |
---|
| 823 | // address without brackets and without name |
---|
| 824 | $value .= $part; |
---|
| 825 | } else if (preg_match('/<*\S+@\S+>*$/', $part, $matches)) { |
---|
| 826 | // address with name (handle name) |
---|
| 827 | $address = $matches[0]; |
---|
| 828 | $word = str_replace($address, '', $part); |
---|
| 829 | $word = trim($word); |
---|
| 830 | // check if phrase requires quoting |
---|
| 831 | if ($word) { |
---|
| 832 | // non-ASCII: require encoding |
---|
| 833 | if (preg_match('#([\x80-\xFF]){1}#', $word)) { |
---|
| 834 | if ($word[0] == '"' && $word[strlen($word)-1] == '"') { |
---|
| 835 | // de-quote quoted-string, encoding changes |
---|
| 836 | // string to atom |
---|
| 837 | $search = array("\\\"", "\\\\"); |
---|
| 838 | $replace = array("\"", "\\"); |
---|
| 839 | $word = str_replace($search, $replace, $word); |
---|
| 840 | $word = substr($word, 1, -1); |
---|
| 841 | } |
---|
| 842 | // find length of last line |
---|
| 843 | if (($pos = strrpos($value, $eol)) !== false) { |
---|
| 844 | $last_len = strlen($value) - $pos; |
---|
| 845 | } else { |
---|
| 846 | $last_len = strlen($value); |
---|
| 847 | } |
---|
| 848 | $word = Mail_mimePart::encodeHeaderValue( |
---|
| 849 | $word, $charset, $encoding, $last_len, $eol |
---|
| 850 | ); |
---|
| 851 | } else if (($word[0] != '"' || $word[strlen($word)-1] != '"') |
---|
| 852 | && preg_match('/[\(\)\<\>\\\.\[\]@,;:"]/', $word) |
---|
| 853 | ) { |
---|
| 854 | // ASCII: quote string if needed |
---|
| 855 | $word = '"'.addcslashes($word, '\\"').'"'; |
---|
| 856 | } |
---|
| 857 | } |
---|
| 858 | $value .= $word.' '.$address; |
---|
| 859 | } else { |
---|
| 860 | // addr-spec not found, don't encode (?) |
---|
| 861 | $value .= $part; |
---|
| 862 | } |
---|
| 863 | |
---|
| 864 | // RFC2822 recommends 78 characters limit, use 76 from RFC2047 |
---|
| 865 | $value = wordwrap($value, 76, $eol . ' '); |
---|
| 866 | } |
---|
| 867 | |
---|
| 868 | // remove header name prefix (there could be EOL too) |
---|
| 869 | $value = preg_replace( |
---|
| 870 | '/^'.$name.':('.preg_quote($eol, '/').')* /', '', $value |
---|
| 871 | ); |
---|
| 872 | |
---|
| 873 | } else { |
---|
| 874 | // Unstructured header |
---|
| 875 | // non-ASCII: require encoding |
---|
| 876 | if (preg_match('#([\x80-\xFF]){1}#', $value)) { |
---|
| 877 | if ($value[0] == '"' && $value[strlen($value)-1] == '"') { |
---|
| 878 | // de-quote quoted-string, encoding changes |
---|
| 879 | // string to atom |
---|
| 880 | $search = array("\\\"", "\\\\"); |
---|
| 881 | $replace = array("\"", "\\"); |
---|
| 882 | $value = str_replace($search, $replace, $value); |
---|
| 883 | $value = substr($value, 1, -1); |
---|
| 884 | } |
---|
| 885 | $value = Mail_mimePart::encodeHeaderValue( |
---|
| 886 | $value, $charset, $encoding, strlen($name) + 2, $eol |
---|
| 887 | ); |
---|
| 888 | } else if (strlen($name.': '.$value) > 78) { |
---|
| 889 | // ASCII: check if header line isn't too long and use folding |
---|
| 890 | $value = preg_replace('/\r?\n[\s\t]*/', $eol . ' ', $value); |
---|
| 891 | $tmp = wordwrap($name.': '.$value, 78, $eol . ' '); |
---|
| 892 | $value = preg_replace('/^'.$name.':\s*/', '', $tmp); |
---|
| 893 | // hard limit 998 (RFC2822) |
---|
| 894 | $value = wordwrap($value, 998, $eol . ' ', true); |
---|
| 895 | } |
---|
| 896 | } |
---|
| 897 | |
---|
| 898 | return $value; |
---|
| 899 | } |
---|
| 900 | |
---|
| 901 | /** |
---|
| 902 | * Explode quoted string |
---|
| 903 | * |
---|
| 904 | * @param string $delimiter Delimiter expression string for preg_match() |
---|
| 905 | * @param string $string Input string |
---|
| 906 | * |
---|
| 907 | * @return array String tokens array |
---|
| 908 | * @access private |
---|
| 909 | */ |
---|
| 910 | function _explodeQuotedString($delimiter, $string) |
---|
| 911 | { |
---|
| 912 | $result = array(); |
---|
| 913 | $strlen = strlen($string); |
---|
| 914 | |
---|
| 915 | for ($q=$p=$i=0; $i < $strlen; $i++) { |
---|
| 916 | if ($string[$i] == "\"" |
---|
| 917 | && (empty($string[$i-1]) || $string[$i-1] != "\\") |
---|
| 918 | ) { |
---|
| 919 | $q = $q ? false : true; |
---|
| 920 | } else if (!$q && preg_match("/$delimiter/", $string[$i])) { |
---|
| 921 | $result[] = substr($string, $p, $i - $p); |
---|
| 922 | $p = $i + 1; |
---|
| 923 | } |
---|
| 924 | } |
---|
| 925 | |
---|
| 926 | $result[] = substr($string, $p); |
---|
| 927 | return $result; |
---|
| 928 | } |
---|
| 929 | |
---|
| 930 | /** |
---|
| 931 | * Encodes a header value as per RFC2047 |
---|
| 932 | * |
---|
| 933 | * @param string $value The header data to encode |
---|
| 934 | * @param string $charset Character set name |
---|
| 935 | * @param string $encoding Encoding name (base64 or quoted-printable) |
---|
| 936 | * @param int $prefix_len Prefix length. Default: 0 |
---|
| 937 | * @param string $eol End-of-line sequence. Default: "\r\n" |
---|
| 938 | * |
---|
| 939 | * @return string Encoded header data |
---|
| 940 | * @access public |
---|
| 941 | * @since 1.6.1 |
---|
| 942 | */ |
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| 943 | function encodeHeaderValue($value, $charset, $encoding, $prefix_len=0, $eol="\r\n") |
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| 944 | { |
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| 945 | // #17311: Use multibyte aware method (requires mbstring extension) |
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| 946 | if ($result = Mail_mimePart::encodeMB($value, $charset, $encoding, $prefix_len, $eol)) { |
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| 947 | return $result; |
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| 948 | } |
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| 949 | |
---|
| 950 | // Generate the header using the specified params and dynamicly |
---|
| 951 | // determine the maximum length of such strings. |
---|
| 952 | // 75 is the value specified in the RFC. |
---|
| 953 | $encoding = $encoding == 'base64' ? 'B' : 'Q'; |
---|
| 954 | $prefix = '=?' . $charset . '?' . $encoding .'?'; |
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| 955 | $suffix = '?='; |
---|
| 956 | $maxLength = 75 - strlen($prefix . $suffix); |
---|
| 957 | $maxLength1stLine = $maxLength - $prefix_len; |
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| 958 | |
---|
| 959 | if ($encoding == 'B') { |
---|
| 960 | // Base64 encode the entire string |
---|
| 961 | $value = base64_encode($value); |
---|
| 962 | |
---|
| 963 | // We can cut base64 every 4 characters, so the real max |
---|
| 964 | // we can get must be rounded down. |
---|
| 965 | $maxLength = $maxLength - ($maxLength % 4); |
---|
| 966 | $maxLength1stLine = $maxLength1stLine - ($maxLength1stLine % 4); |
---|
| 967 | |
---|
| 968 | $cutpoint = $maxLength1stLine; |
---|
| 969 | $output = ''; |
---|
| 970 | |
---|
| 971 | while ($value) { |
---|
| 972 | // Split translated string at every $maxLength |
---|
| 973 | $part = substr($value, 0, $cutpoint); |
---|
| 974 | $value = substr($value, $cutpoint); |
---|
| 975 | $cutpoint = $maxLength; |
---|
| 976 | // RFC 2047 specifies that any split header should |
---|
| 977 | // be seperated by a CRLF SPACE. |
---|
| 978 | if ($output) { |
---|
| 979 | $output .= $eol . ' '; |
---|
| 980 | } |
---|
| 981 | $output .= $prefix . $part . $suffix; |
---|
| 982 | } |
---|
| 983 | $value = $output; |
---|
| 984 | } else { |
---|
| 985 | // quoted-printable encoding has been selected |
---|
| 986 | $value = Mail_mimePart::encodeQP($value); |
---|
| 987 | |
---|
| 988 | // This regexp will break QP-encoded text at every $maxLength |
---|
| 989 | // but will not break any encoded letters. |
---|
| 990 | $reg1st = "|(.{0,$maxLength1stLine}[^\=][^\=])|"; |
---|
| 991 | $reg2nd = "|(.{0,$maxLength}[^\=][^\=])|"; |
---|
| 992 | |
---|
| 993 | if (strlen($value) > $maxLength1stLine) { |
---|
| 994 | // Begin with the regexp for the first line. |
---|
| 995 | $reg = $reg1st; |
---|
| 996 | $output = ''; |
---|
| 997 | while ($value) { |
---|
| 998 | // Split translated string at every $maxLength |
---|
| 999 | // But make sure not to break any translated chars. |
---|
| 1000 | $found = preg_match($reg, $value, $matches); |
---|
| 1001 | |
---|
| 1002 | // After this first line, we need to use a different |
---|
| 1003 | // regexp for the first line. |
---|
| 1004 | $reg = $reg2nd; |
---|
| 1005 | |
---|
| 1006 | // Save the found part and encapsulate it in the |
---|
| 1007 | // prefix & suffix. Then remove the part from the |
---|
| 1008 | // $value_out variable. |
---|
| 1009 | if ($found) { |
---|
| 1010 | $part = $matches[0]; |
---|
| 1011 | $len = strlen($matches[0]); |
---|
| 1012 | $value = substr($value, $len); |
---|
| 1013 | } else { |
---|
| 1014 | $part = $value; |
---|
| 1015 | $value = ''; |
---|
| 1016 | } |
---|
| 1017 | |
---|
| 1018 | // RFC 2047 specifies that any split header should |
---|
| 1019 | // be seperated by a CRLF SPACE |
---|
| 1020 | if ($output) { |
---|
| 1021 | $output .= $eol . ' '; |
---|
| 1022 | } |
---|
| 1023 | $output .= $prefix . $part . $suffix; |
---|
| 1024 | } |
---|
| 1025 | $value = $output; |
---|
| 1026 | } else { |
---|
| 1027 | $value = $prefix . $value . $suffix; |
---|
| 1028 | } |
---|
| 1029 | } |
---|
| 1030 | |
---|
| 1031 | return $value; |
---|
| 1032 | } |
---|
| 1033 | |
---|
| 1034 | /** |
---|
| 1035 | * Encodes the given string using quoted-printable |
---|
| 1036 | * |
---|
| 1037 | * @param string $str String to encode |
---|
| 1038 | * |
---|
| 1039 | * @return string Encoded string |
---|
| 1040 | * @access public |
---|
| 1041 | * @since 1.6.0 |
---|
| 1042 | */ |
---|
| 1043 | function encodeQP($str) |
---|
| 1044 | { |
---|
| 1045 | // Bug #17226 RFC 2047 restricts some characters |
---|
| 1046 | // if the word is inside a phrase, permitted chars are only: |
---|
| 1047 | // ASCII letters, decimal digits, "!", "*", "+", "-", "/", "=", and "_" |
---|
| 1048 | |
---|
| 1049 | // "=", "_", "?" must be encoded |
---|
| 1050 | $regexp = '/([\x22-\x29\x2C\x2E\x3A-\x40\x5B-\x60\x7B-\x7E\x80-\xFF])/'; |
---|
| 1051 | $str = preg_replace_callback( |
---|
| 1052 | $regexp, array('Mail_mimePart', '_qpReplaceCallback'), $str |
---|
| 1053 | ); |
---|
| 1054 | |
---|
| 1055 | return str_replace(' ', '_', $str); |
---|
| 1056 | } |
---|
| 1057 | |
---|
| 1058 | /** |
---|
| 1059 | * Encodes the given string using base64 or quoted-printable. |
---|
| 1060 | * This method makes sure that encoded-word represents an integral |
---|
| 1061 | * number of characters as per RFC2047. |
---|
| 1062 | * |
---|
| 1063 | * @param string $str String to encode |
---|
| 1064 | * @param string $charset Character set name |
---|
| 1065 | * @param string $encoding Encoding name (base64 or quoted-printable) |
---|
| 1066 | * @param int $prefix_len Prefix length. Default: 0 |
---|
| 1067 | * @param string $eol End-of-line sequence. Default: "\r\n" |
---|
| 1068 | * |
---|
| 1069 | * @return string Encoded string |
---|
| 1070 | * @access public |
---|
| 1071 | * @since 1.8.0 |
---|
| 1072 | */ |
---|
| 1073 | function encodeMB($str, $charset, $encoding, $prefix_len=0, $eol="\r\n") |
---|
| 1074 | { |
---|
| 1075 | if (!function_exists('mb_substr') || !function_exists('mb_strlen')) { |
---|
| 1076 | return; |
---|
| 1077 | } |
---|
| 1078 | |
---|
| 1079 | $encoding = $encoding == 'base64' ? 'B' : 'Q'; |
---|
| 1080 | // 75 is the value specified in the RFC |
---|
| 1081 | $prefix = '=?' . $charset . '?'.$encoding.'?'; |
---|
| 1082 | $suffix = '?='; |
---|
| 1083 | $maxLength = 75 - strlen($prefix . $suffix); |
---|
| 1084 | |
---|
| 1085 | // A multi-octet character may not be split across adjacent encoded-words |
---|
| 1086 | // So, we'll loop over each character |
---|
| 1087 | // mb_stlen() with wrong charset will generate a warning here and return null |
---|
| 1088 | $length = mb_strlen($str, $charset); |
---|
| 1089 | $result = ''; |
---|
| 1090 | $line_length = $prefix_len; |
---|
| 1091 | |
---|
| 1092 | if ($encoding == 'B') { |
---|
| 1093 | // base64 |
---|
| 1094 | $start = 0; |
---|
| 1095 | $prev = ''; |
---|
| 1096 | |
---|
| 1097 | for ($i=1; $i<=$length; $i++) { |
---|
| 1098 | // See #17311 |
---|
| 1099 | $chunk = mb_substr($str, $start, $i-$start, $charset); |
---|
| 1100 | $chunk = base64_encode($chunk); |
---|
| 1101 | $chunk_len = strlen($chunk); |
---|
| 1102 | |
---|
| 1103 | if ($line_length + $chunk_len == $maxLength || $i == $length) { |
---|
| 1104 | if ($result) { |
---|
| 1105 | $result .= "\n"; |
---|
| 1106 | } |
---|
| 1107 | $result .= $chunk; |
---|
| 1108 | $line_length = 0; |
---|
| 1109 | $start = $i; |
---|
| 1110 | } else if ($line_length + $chunk_len > $maxLength) { |
---|
| 1111 | if ($result) { |
---|
| 1112 | $result .= "\n"; |
---|
| 1113 | } |
---|
| 1114 | if ($prev) { |
---|
| 1115 | $result .= $prev; |
---|
| 1116 | } |
---|
| 1117 | $line_length = 0; |
---|
| 1118 | $start = $i - 1; |
---|
| 1119 | } else { |
---|
| 1120 | $prev = $chunk; |
---|
| 1121 | } |
---|
| 1122 | } |
---|
| 1123 | } else { |
---|
| 1124 | // quoted-printable |
---|
| 1125 | // see encodeQP() |
---|
| 1126 | $regexp = '/([\x22-\x29\x2C\x2E\x3A-\x40\x5B-\x60\x7B-\x7E\x80-\xFF])/'; |
---|
| 1127 | |
---|
| 1128 | for ($i=0; $i<=$length; $i++) { |
---|
| 1129 | $char = mb_substr($str, $i, 1, $charset); |
---|
| 1130 | // RFC recommends underline (instead of =20) in place of the space |
---|
| 1131 | // that's one of the reasons why we're not using iconv_mime_encode() |
---|
| 1132 | if ($char == ' ') { |
---|
| 1133 | $char = '_'; |
---|
| 1134 | $char_len = 1; |
---|
| 1135 | } else { |
---|
| 1136 | $char = preg_replace_callback( |
---|
| 1137 | $regexp, array('Mail_mimePart', '_qpReplaceCallback'), $char |
---|
| 1138 | ); |
---|
| 1139 | $char_len = strlen($char); |
---|
| 1140 | } |
---|
| 1141 | |
---|
| 1142 | if ($line_length + $char_len > $maxLength) { |
---|
| 1143 | if ($result) { |
---|
| 1144 | $result .= "\n"; |
---|
| 1145 | } |
---|
| 1146 | $line_length = 0; |
---|
| 1147 | } |
---|
| 1148 | |
---|
| 1149 | $result .= $char; |
---|
| 1150 | $line_length += $char_len; |
---|
| 1151 | } |
---|
| 1152 | } |
---|
| 1153 | |
---|
| 1154 | if ($result) { |
---|
| 1155 | $result = $prefix |
---|
| 1156 | .str_replace("\n", $suffix.$eol.' '.$prefix, $result).$suffix; |
---|
| 1157 | } |
---|
| 1158 | |
---|
| 1159 | return $result; |
---|
| 1160 | } |
---|
| 1161 | |
---|
| 1162 | /** |
---|
| 1163 | * Callback function to replace extended characters (\x80-xFF) with their |
---|
| 1164 | * ASCII values (RFC2047: quoted-printable) |
---|
| 1165 | * |
---|
| 1166 | * @param array $matches Preg_replace's matches array |
---|
| 1167 | * |
---|
| 1168 | * @return string Encoded character string |
---|
| 1169 | * @access private |
---|
| 1170 | */ |
---|
| 1171 | function _qpReplaceCallback($matches) |
---|
| 1172 | { |
---|
| 1173 | return sprintf('=%02X', ord($matches[1])); |
---|
| 1174 | } |
---|
| 1175 | |
---|
| 1176 | /** |
---|
| 1177 | * Callback function to replace extended characters (\x80-xFF) with their |
---|
| 1178 | * ASCII values (RFC2231) |
---|
| 1179 | * |
---|
| 1180 | * @param array $matches Preg_replace's matches array |
---|
| 1181 | * |
---|
| 1182 | * @return string Encoded character string |
---|
| 1183 | * @access private |
---|
| 1184 | */ |
---|
| 1185 | function _encodeReplaceCallback($matches) |
---|
| 1186 | { |
---|
| 1187 | return sprintf('%%%02X', ord($matches[1])); |
---|
| 1188 | } |
---|
| 1189 | |
---|
| 1190 | } // End of class |
---|