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<?php
/**
* The Mail_mimePart class is used to create MIME E-mail messages
*
* This class enables you to manipulate and build a mime email
* from the ground up. The Mail_Mime class is a userfriendly api
* to this class for people who aren't interested in the internals
* of mime mail.
* This class however allows full control over the email.
*
* Compatible with PHP versions 4 and 5
*
* LICENSE: This LICENSE is in the BSD license style.
* Copyright (c) 2002-2003, Richard Heyes <richard@phpguru.org>
* Copyright (c) 2003-2006, PEAR <pear-group@php.net>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - Neither the name of the authors, nor the names of its contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*
* @category Mail
* @package Mail_Mime
* @author Richard Heyes <richard@phpguru.org>
* @author Cipriano Groenendal <cipri@php.net>
* @author Sean Coates <sean@php.net>
* @copyright 2003-2006 PEAR <pear-group@php.net>
* @license http://www.opensource.org/licenses/bsd-license.php BSD License
* @version CVS: $Id: mimePart.php,v 1.25 2007/05/14 21:43:08 cipri Exp $
* @link http://pear.php.net/package/Mail_mime
*/
/**
* The Mail_mimePart class is used to create MIME E-mail messages
*
* This class enables you to manipulate and build a mime email
* from the ground up. The Mail_Mime class is a userfriendly api
* to this class for people who aren't interested in the internals
* of mime mail.
* This class however allows full control over the email.
*
* @category Mail
* @package Mail_Mime
* @author Richard Heyes <richard@phpguru.org>
* @author Cipriano Groenendal <cipri@php.net>
* @author Sean Coates <sean@php.net>
* @copyright 2003-2006 PEAR <pear-group@php.net>
* @license http://www.opensource.org/licenses/bsd-license.php BSD License
* @version Release: @package_version@
* @link http://pear.php.net/package/Mail_mime
*/
class Mail_mimePart {
/**
* The encoding type of this part
*
* @var string
* @access private
*/
var $_encoding;
/**
* An array of subparts
*
* @var array
* @access private
*/
var $_subparts;
/**
* The output of this part after being built
*
* @var string
* @access private
*/
var $_encoded;
/**
* Headers for this part
*
* @var array
* @access private
*/
var $_headers;
/**
* The body of this part (not encoded)
*
* @var string
* @access private
*/
var $_body;
/**
* Constructor.
*
* Sets up the object.
*
* @param $body - The body of the mime part if any.
* @param $params - An associative array of parameters:
* content_type - The content type for this part eg multipart/mixed
* encoding - The encoding to use, 7bit, 8bit, base64, or quoted-printable
* cid - Content ID to apply
* disposition - Content disposition, inline or attachment
* dfilename - Optional filename parameter for content disposition
* description - Content description
* charset - Character set to use
* @access public
*/
function Mail_mimePart($body = '', $params = array())
{
if (!defined('MAIL_MIMEPART_CRLF')) {
define('MAIL_MIMEPART_CRLF', defined('MAIL_MIME_CRLF') ? MAIL_MIME_CRLF : "\r\n", TRUE);
}
$contentType = array();
$contentDisp = array();
foreach ($params as $key => $value) {
switch ($key) {
case 'content_type':
$contentType['type'] = $value;
//$headers['Content-Type'] = $value . (isset($charset) ? '; charset="' . $charset . '"' : '');
break;
case 'encoding':
$this->_encoding = $value;
$headers['Content-Transfer-Encoding'] = $value;
break;
case 'cid':
$headers['Content-ID'] = '<' . $value . '>';
break;
case 'disposition':
$contentDisp['disp'] = $value;
break;
case 'dfilename':
$contentDisp['filename'] = $value;
$contentType['name'] = $value;
break;
case 'description':
$headers['Content-Description'] = $value;
break;
case 'charset':
$contentType['charset'] = $value;
$contentDisp['charset'] = $value;
break;
case 'language':
$contentType['language'] = $value;
$contentDisp['language'] = $value;
break;
case 'location':
$headers['Content-Location'] = $value;
break;
}
}
if (isset($contentType['type'])) {
$headers['Content-Type'] = $contentType['type'];
if (isset($contentType['name'])) {
$headers['Content-Type'] .= ';' . MAIL_MIMEPART_CRLF;
$headers['Content-Type'] .= $this->_buildHeaderParam('name', $contentType['name'],
isset($contentType['charset']) ? $contentType['charset'] : 'US-ASCII',
isset($contentType['language']) ? $contentType['language'] : NULL);
} elseif (isset($contentType['charset'])) {
$headers['Content-Type'] .= "; charset=\"{$contentType['charset']}\"";
}
}
if (isset($contentDisp['disp'])) {
$headers['Content-Disposition'] = $contentDisp['disp'];
if (isset($contentDisp['filename'])) {
$headers['Content-Disposition'] .= ';' . MAIL_MIMEPART_CRLF;
$headers['Content-Disposition'] .= $this->_buildHeaderParam('filename', $contentDisp['filename'],
isset($contentDisp['charset']) ? $contentDisp['charset'] : 'US-ASCII',
isset($contentDisp['language']) ? $contentDisp['language'] : NULL);
}
}
// Default content-type
if (!isset($headers['Content-Type'])) {
$headers['Content-Type'] = 'text/plain';
}
//Default encoding
if (!isset($this->_encoding)) {
$this->_encoding = '7bit';
}
// Assign stuff to member variables
$this->_encoded = array();
$this->_headers = $headers;
$this->_body = $body;
}
/**
* encode()
*
* Encodes and returns the email. Also stores
* it in the encoded member variable
*
* @return An associative array containing two elements,
* body and headers. The headers element is itself
* an indexed array.
* @access public
*/
function encode()
{
$encoded =& $this->_encoded;
if (count($this->_subparts)) {
srand((double)microtime()*1000000);
$boundary = '=_' . md5(rand() . microtime());
$this->_headers['Content-Type'] .= ';' . MAIL_MIMEPART_CRLF . "\t" . 'boundary="' . $boundary . '"';
// Add body parts to $subparts
for ($i = 0; $i < count($this->_subparts); $i++) {
$headers = array();
$tmp = $this->_subparts[$i]->encode();
foreach ($tmp['headers'] as $key => $value) {
$headers[] = $key . ': ' . $value;
}
$subparts[] = implode(MAIL_MIMEPART_CRLF, $headers) . MAIL_MIMEPART_CRLF . MAIL_MIMEPART_CRLF . $tmp['body'] . MAIL_MIMEPART_CRLF;
}
$encoded['body'] = '--' . $boundary . MAIL_MIMEPART_CRLF .
rtrim(implode('--' . $boundary . MAIL_MIMEPART_CRLF , $subparts), MAIL_MIMEPART_CRLF) . MAIL_MIMEPART_CRLF .
'--' . $boundary.'--' . MAIL_MIMEPART_CRLF;
} else {
$encoded['body'] = $this->_getEncodedData($this->_body, $this->_encoding);
}
// Add headers to $encoded
$encoded['headers'] =& $this->_headers;
return $encoded;
}
/**
* &addSubPart()
*
* Adds a subpart to current mime part and returns
* a reference to it
*
* @param $body The body of the subpart, if any.
* @param $params The parameters for the subpart, same
* as the $params argument for constructor.
* @return A reference to the part you just added. It is
* crucial if using multipart/* in your subparts that
* you use =& in your script when calling this function,
* otherwise you will not be able to add further subparts.
* @access public
*/
function &addSubPart($body, $params)
{
$this->_subparts[] = new Mail_mimePart($body, $params);
return $this->_subparts[count($this->_subparts) - 1];
}
/**
* _getEncodedData()
*
* Returns encoded data based upon encoding passed to it
*
* @param $data The data to encode.
* @param $encoding The encoding type to use, 7bit, base64,
* or quoted-printable.
* @access private
*/
function _getEncodedData($data, $encoding)
{
switch ($encoding) {
case '8bit':
case '7bit':
return $data;
break;
case 'quoted-printable':
return $this->_quotedPrintableEncode($data);
break;
case 'base64':
return rtrim(chunk_split(base64_encode($data), 76, MAIL_MIMEPART_CRLF));
break;
default:
return $data;
}
}
/**
* quotedPrintableEncode()
*
* Encodes data to quoted-printable standard.
*
* @param $input The data to encode
* @param $line_max Optional max line length. Should
* not be more than 76 chars
*
* @access private
*/
function _quotedPrintableEncode($input , $line_max = 76)
{
$lines = preg_split("/\r?\n/", $input);
$eol = MAIL_MIMEPART_CRLF;
$escape = '=';
$output = '';
while (list(, $line) = each($lines)) {
$line = preg_split('||', $line, -1, PREG_SPLIT_NO_EMPTY);
$linlen = count($line);
$newline = '';
for ($i = 0; $i < $linlen; $i++) {
$char = $line[$i];
$dec = ord($char);
if (($dec == 32) AND ($i == ($linlen - 1))) { // convert space at eol only
$char = '=20';
} elseif (($dec == 9) AND ($i == ($linlen - 1))) { // convert tab at eol only
$char = '=09';
} elseif ($dec == 9) {
; // Do nothing if a tab.
} elseif (($dec == 61) OR ($dec < 32 ) OR ($dec > 126)) {
$char = $escape . strtoupper(sprintf('%02s', dechex($dec)));
} elseif (($dec == 46) AND ($newline == '')) {
//Bug #9722: convert full-stop at bol
//Some Windows servers need this, won't break anything (cipri)
$char = '=2E';
}
if ((strlen($newline) + strlen($char)) >= $line_max) { // MAIL_MIMEPART_CRLF is not counted
$output .= $newline . $escape . $eol; // soft line break; " =\r\n" is okay
$newline = '';
}
$newline .= $char;
} // end of for
$output .= $newline . $eol;
}
$output = substr($output, 0, -1 * strlen($eol)); // Don't want last crlf
return $output;
}
/**
* _buildHeaderParam()
*
* Encodes the paramater of a header.
*
* @param $name The name of the header-parameter
* @param $value The value of the paramter
* @param $charset The characterset of $value
* @param $language The language used in $value
* @param $maxLength The maximum length of a line. Defauls to 75
*
* @access private
*/
function _buildHeaderParam($name, $value, $charset=NULL, $language=NULL, $maxLength=75)
{
//If we find chars to encode, or if charset or language
//is not any of the defaults, we need to encode the value.
$shouldEncode = 0;
$secondAsterisk = '';
if (preg_match('#([\x80-\xFF]){1}#', $value)) {
$shouldEncode = 1;
} elseif ($charset && (strtolower($charset) != 'us-ascii')) {
$shouldEncode = 1;
} elseif ($language && ($language != 'en' && $language != 'en-us')) {
$shouldEncode = 1;
}
if ($shouldEncode) {
$search = array('%', ' ', "\t");
$replace = array('%25', '%20', '%09');
$encValue = str_replace($search, $replace, $value);
$encValue = preg_replace('#([\x80-\xFF])#e', '"%" . strtoupper(dechex(ord("\1")))', $encValue);
$value = "$charset'$language'$encValue";
$secondAsterisk = '*';
}
$header = " {$name}{$secondAsterisk}=\"{$value}\"; ";
if (strlen($header) <= $maxLength) {
return $header;
}
$preLength = strlen(" {$name}*0{$secondAsterisk}=\"");
$sufLength = strlen("\";");
$maxLength = MAX(16, $maxLength - $preLength - $sufLength - 2);
$maxLengthReg = "|(.{0,$maxLength}[^\%][^\%])|";
$headers = array();
$headCount = 0;
while ($value) {
$matches = array();
$found = preg_match($maxLengthReg, $value, $matches);
if ($found) {
$headers[] = " {$name}*{$headCount}{$secondAsterisk}=\"{$matches[0]}\"";
$value = substr($value, strlen($matches[0]));
} else {
$headers[] = " {$name}*{$headCount}{$secondAsterisk}=\"{$value}\"";
$value = "";
}
$headCount++;
}
$headers = implode(MAIL_MIMEPART_CRLF, $headers) . ';';
return $headers;
}
} // End of class
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