mimeDecode.php
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mimeDecode.php
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	<?php
	/**
	* The Mail_mimeDecode class is used to decode mail/mime messages
	*
	* This class will parse a raw mime email and return
	* the structure. Returned structure is similar to
	* that returned by imap_fetchstructure().
	*
	* +----------------------------- IMPORTANT ------------------------------+
	* \| Usage of this class compared to native php extensions such as \|
	* \| mailparse or imap, is slow and may be feature deficient. If available\|
	* \| you are STRONGLY recommended to use the php extensions. \|
	* +----------------------------------------------------------------------+
	*
	* 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 George Schlossnagle <george@omniti.com>
	* @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: mimeDecode.php 305875 2010-12-01 07:17:10Z alan_k $
	* @link http://pear.php.net/package/Mail_mime
	*/


	/**
	* require PEAR
	*
	* This package depends on PEAR to raise errors.
	*/
	require_once 'PEAR.php';


	/**
	* The Mail_mimeDecode class is used to decode mail/mime messages
	*
	* This class will parse a raw mime email and return the structure.
	* Returned structure is similar to that returned by imap_fetchstructure().
	*
	* +----------------------------- IMPORTANT ------------------------------+
	* \| Usage of this class compared to native php extensions such as \|
	* \| mailparse or imap, is slow and may be feature deficient. If available\|
	* \| you are STRONGLY recommended to use the php extensions. \|
	* +----------------------------------------------------------------------+
	*
	* @category Mail
	* @package Mail_Mime
	* @author Richard Heyes <richard@phpguru.org>
	* @author George Schlossnagle <george@omniti.com>
	* @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: 1.5.5
	* @link http://pear.php.net/package/Mail_mime
	*/
	class Mail_mimeDecode extends PEAR
	{
	/**
	* The raw email to decode
	*
	* @var string
	* @access private
	*/
	var $_input;

	/**
	* The header part of the input
	*
	* @var string
	* @access private
	*/
	var $_header;

	/**
	* The body part of the input
	*
	* @var string
	* @access private
	*/
	var $_body;

	/**
	* If an error occurs, this is used to store the message
	*
	* @var string
	* @access private
	*/
	var $_error;

	/**
	* Flag to determine whether to include bodies in the
	* returned object.
	*
	* @var boolean
	* @access private
	*/
	var $_include_bodies;

	/**
	* Flag to determine whether to decode bodies
	*
	* @var boolean
	* @access private
	*/
	var $_decode_bodies;

	/**
	* Flag to determine whether to decode headers
	*
	* @var boolean
	* @access private
	*/
	var $_decode_headers;

	/**
	* Flag to determine whether to include attached messages
	* as body in the returned object. Depends on $_include_bodies
	*
	* @var boolean
	* @access private
	*/
	var $_rfc822_bodies;

	/**
	* Constructor.
	*
	* Sets up the object, initialise the variables, and splits and
	* stores the header and body of the input.
	*
	* @param string The input to decode
	* @access public
	*/
	function Mail_mimeDecode($input)
	{
	list($header, $body) = $this->_splitBodyHeader($input);

	$this->_input = $input;
	$this->_header = $header;
	$this->_body = $body;
	$this->_decode_bodies = false;
	$this->_include_bodies = true;
	$this->_rfc822_bodies = false;
	}

	/**
	* Begins the decoding process. If called statically
	* it will create an object and call the decode() method
	* of it.
	*
	* @param array An array of various parameters that determine
	* various things:
	* include_bodies - Whether to include the body in the returned
	* object.
	* decode_bodies - Whether to decode the bodies
	* of the parts. (Transfer encoding)
	* decode_headers - Whether to decode headers
	* input - If called statically, this will be treated
	* as the input
	* @return object Decoded results
	* @access public
	*/
	function decode($params = null)
	{
	// determine if this method has been called statically
	$isStatic = empty($this) \|\| !is_a($this, __CLASS__);

	// Have we been called statically?
	// If so, create an object and pass details to that.
	if ($isStatic AND isset($params['input'])) {

	$obj = new Mail_mimeDecode($params['input']);
	$structure = $obj->decode($params);

	// Called statically but no input
	} elseif ($isStatic) {
	return PEAR::raiseError('Called statically and no input given');

	// Called via an object
	} else {
	$this->_include_bodies = isset($params['include_bodies']) ?
	$params['include_bodies'] : false;
	$this->_decode_bodies = isset($params['decode_bodies']) ?
	$params['decode_bodies'] : false;
	$this->_decode_headers = isset($params['decode_headers']) ?
	$params['decode_headers'] : false;
	$this->_rfc822_bodies = isset($params['rfc_822bodies']) ?
	$params['rfc_822bodies'] : false;

	$structure = $this->_decode($this->_header, $this->_body);
	if ($structure === false) {
	$structure = $this->raiseError($this->_error);
	}
	}

	return $structure;
	}

	/**
	* Performs the decoding. Decodes the body string passed to it
	* If it finds certain content-types it will call itself in a
	* recursive fashion
	*
	* @param string Header section
	* @param string Body section
	* @return object Results of decoding process
	* @access private
	*/
	function _decode($headers, $body, $default_ctype = 'text/plain')
	{
	$return = new stdClass;
	$return->headers = array();
	$headers = $this->_parseHeaders($headers);

	foreach ($headers as $value) {
	$value['value'] = $this->_decode_headers ? $this->_decodeHeader($value['value']) : $value['value'];
	if (isset($return->headers[strtolower($value['name'])]) AND !is_array($return->headers[strtolower($value['name'])])) {
	$return->headers[strtolower($value['name'])] = array($return->headers[strtolower($value['name'])]);
	$return->headers[strtolower($value['name'])][] = $value['value'];

	} elseif (isset($return->headers[strtolower($value['name'])])) {
	$return->headers[strtolower($value['name'])][] = $value['value'];

	} else {
	$return->headers[strtolower($value['name'])] = $value['value'];
	}
	}


	foreach ($headers as $key => $value) {
	$headers[$key]['name'] = strtolower($headers[$key]['name']);
	switch ($headers[$key]['name']) {

	case 'content-type':
	$content_type = $this->_parseHeaderValue($headers[$key]['value']);

	if (preg_match('/([0-9a-z+.-]+)\/([0-9a-z+.-]+)/i', $content_type['value'], $regs)) {
	$return->ctype_primary = $regs[1];
	$return->ctype_secondary = $regs[2];
	}

	if (isset($content_type['other'])) {
	foreach($content_type['other'] as $p_name => $p_value) {
	$return->ctype_parameters[$p_name] = $p_value;
	}
	}
	break;

	case 'content-disposition':
	$content_disposition = $this->_parseHeaderValue($headers[$key]['value']);
	$return->disposition = $content_disposition['value'];
	if (isset($content_disposition['other'])) {
	foreach($content_disposition['other'] as $p_name => $p_value) {
	$return->d_parameters[$p_name] = $p_value;
	}
	}
	break;

	case 'content-transfer-encoding':
	$content_transfer_encoding = $this->_parseHeaderValue($headers[$key]['value']);
	break;
	}
	}

	if (isset($content_type)) {
	switch (strtolower($content_type['value'])) {
	case 'text/plain':
	$encoding = isset($content_transfer_encoding) ? $content_transfer_encoding['value'] : '7bit';
	$this->_include_bodies ? $return->body = ($this->_decode_bodies ? $this->_decodeBody($body, $encoding) : $body) : null;
	break;

	case 'text/html':
	$encoding = isset($content_transfer_encoding) ? $content_transfer_encoding['value'] : '7bit';
	$this->_include_bodies ? $return->body = ($this->_decode_bodies ? $this->_decodeBody($body, $encoding) : $body) : null;
	break;

	case 'multipart/parallel':
	case 'multipart/appledouble': // Appledouble mail
	case 'multipart/report': // RFC1892
	case 'multipart/signed': // PGP
	case 'multipart/digest':
	case 'multipart/alternative':
	case 'multipart/related':
	case 'multipart/mixed':
	case 'application/vnd.wap.multipart.related':
	if(!isset($content_type['other']['boundary'])){
	$this->_error = 'No boundary found for ' . $content_type['value'] . ' part';
	return false;
	}

	$default_ctype = (strtolower($content_type['value']) === 'multipart/digest') ? 'message/rfc822' : 'text/plain';

	$parts = $this->_boundarySplit($body, $content_type['other']['boundary']);
	for ($i = 0; $i < count($parts); $i++) {
	list($part_header, $part_body) = $this->_splitBodyHeader($parts[$i]);
	$part = $this->_decode($part_header, $part_body, $default_ctype);
	if($part === false)
	$part = $this->raiseError($this->_error);
	$return->parts[] = $part;
	}
	break;

	case 'message/rfc822':
	if ($this->_rfc822_bodies) {
	$encoding = isset($content_transfer_encoding) ? $content_transfer_encoding['value'] : '7bit';
	$return->body = ($this->_decode_bodies ? $this->_decodeBody($body, $encoding) : $body);
	}
	$obj = new Mail_mimeDecode($body);
	$return->parts[] = $obj->decode(array('include_bodies' => $this->_include_bodies,
	'decode_bodies' => $this->_decode_bodies,
	'decode_headers' => $this->_decode_headers));
	unset($obj);
	break;

	default:
	if(!isset($content_transfer_encoding['value']))
	$content_transfer_encoding['value'] = '7bit';
	$this->_include_bodies ? $return->body = ($this->_decode_bodies ? $this->_decodeBody($body, $content_transfer_encoding['value']) : $body) : null;
	break;
	}

	} else {
	$ctype = explode('/', $default_ctype);
	$return->ctype_primary = $ctype[0];
	$return->ctype_secondary = $ctype[1];
	$this->_include_bodies ? $return->body = ($this->_decode_bodies ? $this->_decodeBody($body) : $body) : null;
	}

	return $return;
	}

	/**
	* Given the output of the above function, this will return an
	* array of references to the parts, indexed by mime number.
	*
	* @param object $structure The structure to go through
	* @param string $mime_number Internal use only.
	* @return array Mime numbers
	*/
	function &getMimeNumbers(&$structure, $no_refs = false, $mime_number = '', $prepend = '')
	{
	$return = array();
	if (!empty($structure->parts)) {
	if ($mime_number != '') {
	$structure->mime_id = $prepend . $mime_number;
	$return[$prepend . $mime_number] = &$structure;
	}
	for ($i = 0; $i < count($structure->parts); $i++) {


	if (!empty($structure->headers['content-type']) AND substr(strtolower($structure->headers['content-type']), 0, 8) == 'message/') {
	$prepend = $prepend . $mime_number . '.';
	$_mime_number = '';
	} else {
	$_mime_number = ($mime_number == '' ? $i + 1 : sprintf('%s.%s', $mime_number, $i + 1));
	}

	$arr = &Mail_mimeDecode::getMimeNumbers($structure->parts[$i], $no_refs, $_mime_number, $prepend);
	foreach ($arr as $key => $val) {
	$no_refs ? $return[$key] = '' : $return[$key] = &$arr[$key];
	}
	}
	} else {
	if ($mime_number == '') {
	$mime_number = '1';
	}
	$structure->mime_id = $prepend . $mime_number;
	$no_refs ? $return[$prepend . $mime_number] = '' : $return[$prepend . $mime_number] = &$structure;
	}

	return $return;
	}

	/**
	* Given a string containing a header and body
	* section, this function will split them (at the first
	* blank line) and return them.
	*
	* @param string Input to split apart
	* @return array Contains header and body section
	* @access private
	*/
	function _splitBodyHeader($input)
	{
	if (preg_match("/^(.?)\r?\n\r?\n(.)/s", $input, $match)) {
	return array($match[1], $match[2]);
	}
	// bug #17325 - empty bodies are allowed. - we just check that at least one line
	// of headers exist..
	if (count(explode("\n",$input))) {
	return array($input, '');
	}
	$this->_error = 'Could not split header and body';
	return false;
	}

	/**
	* Parse headers given in $input and return
	* as assoc array.
	*
	* @param string Headers to parse
	* @return array Contains parsed headers
	* @access private
	*/
	function _parseHeaders($input)
	{

	if ($input !== '') {
	// Unfold the input
	$input = preg_replace("/\r?\n/", "\r\n", $input);
	//#7065 - wrapping.. with encoded stuff.. - probably not needed,
	// wrapping space should only get removed if the trailing item on previous line is a
	// encoded character
	$input = preg_replace("/=\r\n(\t\| )+/", '=', $input);
	$input = preg_replace("/\r\n(\t\| )+/", ' ', $input);

	$headers = explode("\r\n", trim($input));

	foreach ($headers as $value) {
	$hdr_name = substr($value, 0, $pos = strpos($value, ':'));
	$hdr_value = substr($value, $pos+1);
	if($hdr_value[0] == ' ')
	$hdr_value = substr($hdr_value, 1);

	$return[] = array(
	'name' => $hdr_name,
	'value' => $hdr_value
	);
	}
	} else {
	$return = array();
	}

	return $return;
	}

	/**
	* Function to parse a header value,
	* extract first part, and any secondary
	* parts (after ;) This function is not as
	* robust as it could be. Eg. header comments
	* in the wrong place will probably break it.
	*
	* @param string Header value to parse
	* @return array Contains parsed result
	* @access private
	*/
	function _parseHeaderValue($input)
	{

	if (($pos = strpos($input, ';')) === false) {
	$input = $this->_decode_headers ? $this->_decodeHeader($input) : $input;
	$return['value'] = trim($input);
	return $return;
	}



	$value = substr($input, 0, $pos);
	$value = $this->_decode_headers ? $this->_decodeHeader($value) : $value;
	$return['value'] = trim($value);
	$input = trim(substr($input, $pos+1));

	if (!strlen($input) > 0) {
	return $return;
	}
	// at this point input contains xxxx=".....";zzzz="...."
	// since we are dealing with quoted strings, we need to handle this properly..
	$i = 0;
	$l = strlen($input);
	$key = '';
	$val = false; // our string - including quotes..
	$q = false; // in quote..
	$lq = ''; // last quote..

	while ($i < $l) {

	$c = $input[$i];
	//var_dump(array('i'=>$i,'c'=>$c,'q'=>$q, 'lq'=>$lq, 'key'=>$key, 'val' =>$val));

	$escaped = false;
	if ($c == '\\') {
	$i++;
	if ($i == $l-1) { // end of string.
	break;
	}
	$escaped = true;
	$c = $input[$i];
	}


	// state - in key..
	if ($val === false) {
	if (!$escaped && $c == '=') {
	$val = '';
	$key = trim($key);
	$i++;
	continue;
	}
	if (!$escaped && $c == ';') {
	if ($key) { // a key without a value..
	$key= trim($key);
	$return['other'][$key] = '';
	$return['other'][strtolower($key)] = '';
	}
	$key = '';
	}
	$key .= $c;
	$i++;
	continue;
	}

	// state - in value.. (as $val is set..)

	if ($q === false) {
	// not in quote yet.
	if ((!strlen($val) \|\| $lq !== false) && $c == ' ' \|\| $c == "\t") {
	$i++;
	continue; // skip leading spaces after '=' or after '"'
	}
	if (!$escaped && ($c == '"' \|\| $c == "'")) {
	// start quoted area..
	$q = $c;
	// in theory should not happen raw text in value part..
	// but we will handle it as a merged part of the string..
	$val = !strlen(trim($val)) ? '' : trim($val);
	$i++;
	continue;
	}
	// got end....
	if (!$escaped && $c == ';') {

	$val = trim($val);
	$added = false;
	if (preg_match('/\*[0-9]+$/', $key)) {
	// this is the extended aaa0=...;aaa1=.... code
	// it assumes the pieces arrive in order, and are valid...
	$key = preg_replace('/\*[0-9]+$/', '', $key);
	if (isset($return['other'][$key])) {
	$return['other'][$key] .= $val;
	if (strtolower($key) != $key) {
	$return['other'][strtolower($key)] .= $val;
	}
	$added = true;
	}
	// continue and use standard setters..
	}
	if (!$added) {
	$return['other'][$key] = $val;
	$return['other'][strtolower($key)] = $val;
	}
	$val = false;
	$key = '';
	$lq = false;
	$i++;
	continue;
	}

	$val .= $c;
	$i++;
	continue;
	}

	// state - in quote..
	if (!$escaped && $c == $q) { // potential exit state..

	// end of quoted string..
	$lq = $q;
	$q = false;
	$i++;
	continue;
	}

	// normal char inside of quoted string..
	$val.= $c;
	$i++;
	}

	// do we have anything left..
	if (strlen(trim($key)) \|\| $val !== false) {

	$val = trim($val);
	$added = false;
	if ($val !== false && preg_match('/\*[0-9]+$/', $key)) {
	// no dupes due to our crazy regexp.
	$key = preg_replace('/\*[0-9]+$/', '', $key);
	if (isset($return['other'][$key])) {
	$return['other'][$key] .= $val;
	if (strtolower($key) != $key) {
	$return['other'][strtolower($key)] .= $val;
	}
	$added = true;
	}
	// continue and use standard setters..
	}
	if (!$added) {
	$return['other'][$key] = $val;
	$return['other'][strtolower($key)] = $val;
	}
	}
	// decode values.
	foreach($return['other'] as $key =>$val) {
	$return['other'][$key] = $this->_decode_headers ? $this->_decodeHeader($val) : $val;
	}
	//print_r($return);
	return $return;
	}

	/**
	* This function splits the input based
	* on the given boundary
	*
	* @param string Input to parse
	* @return array Contains array of resulting mime parts
	* @access private
	*/
	function _boundarySplit($input, $boundary)
	{
	$parts = array();

	$bs_possible = substr($boundary, 2, -2);
	$bs_check = '\"' . $bs_possible . '\"';

	if ($boundary == $bs_check) {
	$boundary = $bs_possible;
	}
	$tmp = preg_split("/--".preg_quote($boundary, '/')."((?=\s)\|--)/", $input);

	$len = count($tmp) -1;
	for ($i = 1; $i < $len; $i++) {
	if (strlen(trim($tmp[$i]))) {
	$parts[] = $tmp[$i];
	}
	}

	// add the last part on if it does not end with the 'closing indicator'
	if (!empty($tmp[$len]) && strlen(trim($tmp[$len])) && $tmp[$len][0] != '-') {
	$parts[] = $tmp[$len];
	}
	return $parts;
	}

	/**
	* Given a header, this function will decode it
	* according to RFC2047. Probably not exactly
	* conformant, but it does pass all the given
	* examples (in RFC2047).
	*
	* @param string Input header value to decode
	* @return string Decoded header value
	* @access private
	*/
	function _decodeHeader($input)
	{
	// Remove white space between encoded-words
	$input = preg_replace('/(=\?[^?]+\?(q\|b)\?[^?]*\?=)(\s)+=\?/i', '\1=?', $input);

	// For each encoded-word...
	while (preg_match('/(=\?([^?]+)\?(q\|b)\?([^?]*)\?=)/i', $input, $matches)) {

	$encoded = $matches[1];
	$charset = $matches[2];
	$encoding = $matches[3];
	$text = $matches[4];

	switch (strtolower($encoding)) {
	case 'b':
	$text = base64_decode($text);
	break;

	case 'q':
	$text = str_replace('_', ' ', $text);
	preg_match_all('/=([a-f0-9]{2})/i', $text, $matches);
	foreach($matches[1] as $value)
	$text = str_replace('='.$value, chr(hexdec($value)), $text);
	break;
	}

	$input = str_replace($encoded, $text, $input);
	}

	return $input;
	}

	/**
	* Given a body string and an encoding type,
	* this function will decode and return it.
	*
	* @param string Input body to decode
	* @param string Encoding type to use.
	* @return string Decoded body
	* @access private
	*/
	function _decodeBody($input, $encoding = '7bit')
	{
	switch (strtolower($encoding)) {
	case '7bit':
	return $input;
	break;

	case 'quoted-printable':
	return $this->_quotedPrintableDecode($input);
	break;

	case 'base64':
	return base64_decode($input);
	break;

	default:
	return $input;
	}
	}

	/**
	* Given a quoted-printable string, this
	* function will decode and return it.
	*
	* @param string Input body to decode
	* @return string Decoded body
	* @access private
	*/
	function _quotedPrintableDecode($input)
	{
	// Remove soft line breaks
	$input = preg_replace("/=\r?\n/", '', $input);

	// Replace encoded characters
	$input = preg_replace('/=([a-f0-9]{2})/ie', "chr(hexdec('\\1'))", $input);

	return $input;
	}

	/**
	* Checks the input for uuencoded files and returns
	* an array of them. Can be called statically, eg:
	*
	* $files =& Mail_mimeDecode::uudecode($some_text);
	*
	* It will check for the begin 666 ... end syntax
	* however and won't just blindly decode whatever you
	* pass it.
	*
	* @param string Input body to look for attahcments in
	* @return array Decoded bodies, filenames and permissions
	* @access public
	* @author Unknown
	*/
	function &uudecode($input)
	{
	// Find all uuencoded sections
	preg_match_all("/begin ([0-7]{3}) (.+)\r?\n(.+)\r?\nend/Us", $input, $matches);

	for ($j = 0; $j < count($matches[3]); $j++) {

	$str = $matches[3][$j];
	$filename = $matches[2][$j];
	$fileperm = $matches[1][$j];

	$file = '';
	$str = preg_split("/\r?\n/", trim($str));
	$strlen = count($str);

	for ($i = 0; $i < $strlen; $i++) {
	$pos = 1;
	$d = 0;
	$len=(int)(((ord(substr($str[$i],0,1)) -32) - ' ') & 077);

	while (($d + 3 <= $len) AND ($pos + 4 <= strlen($str[$i]))) {
	$c0 = (ord(substr($str[$i],$pos,1)) ^ 0x20);
	$c1 = (ord(substr($str[$i],$pos+1,1)) ^ 0x20);
	$c2 = (ord(substr($str[$i],$pos+2,1)) ^ 0x20);
	$c3 = (ord(substr($str[$i],$pos+3,1)) ^ 0x20);
	$file .= chr(((($c0 - ' ') & 077) << 2) \| ((($c1 - ' ') & 077) >> 4));

	$file .= chr(((($c1 - ' ') & 077) << 4) \| ((($c2 - ' ') & 077) >> 2));

	$file .= chr(((($c2 - ' ') & 077) << 6) \| (($c3 - ' ') & 077));

	$pos += 4;
	$d += 3;
	}

	if (($d + 2 <= $len) && ($pos + 3 <= strlen($str[$i]))) {
	$c0 = (ord(substr($str[$i],$pos,1)) ^ 0x20);
	$c1 = (ord(substr($str[$i],$pos+1,1)) ^ 0x20);
	$c2 = (ord(substr($str[$i],$pos+2,1)) ^ 0x20);
	$file .= chr(((($c0 - ' ') & 077) << 2) \| ((($c1 - ' ') & 077) >> 4));

	$file .= chr(((($c1 - ' ') & 077) << 4) \| ((($c2 - ' ') & 077) >> 2));

	$pos += 3;
	$d += 2;
	}

	if (($d + 1 <= $len) && ($pos + 2 <= strlen($str[$i]))) {
	$c0 = (ord(substr($str[$i],$pos,1)) ^ 0x20);
	$c1 = (ord(substr($str[$i],$pos+1,1)) ^ 0x20);
	$file .= chr(((($c0 - ' ') & 077) << 2) \| ((($c1 - ' ') & 077) >> 4));

	}
	}
	$files[] = array('filename' => $filename, 'fileperm' => $fileperm, 'filedata' => $file);
	}

	return $files;
	}

	/**
	* getSendArray() returns the arguments required for Mail::send()
	* used to build the arguments for a mail::send() call
	*
	* Usage:
	* $mailtext = Full email (for example generated by a template)
	* $decoder = new Mail_mimeDecode($mailtext);
	* $parts = $decoder->getSendArray();
	* if (!PEAR::isError($parts) {
	* list($recipents,$headers,$body) = $parts;
	* $mail = Mail::factory('smtp');
	* $mail->send($recipents,$headers,$body);
	* } else {
	* echo $parts->message;
	* }
	* @return mixed array of recipeint, headers,body or Pear_Error
	* @access public
	* @author Alan Knowles <alan@akbkhome.com>
	*/
	function getSendArray()
	{
	// prevent warning if this is not set
	$this->_decode_headers = FALSE;
	$headerlist =$this->_parseHeaders($this->_header);
	$to = "";
	if (!$headerlist) {
	return $this->raiseError("Message did not contain headers");
	}
	foreach($headerlist as $item) {
	$header[$item['name']] = $item['value'];
	switch (strtolower($item['name'])) {
	case "to":
	case "cc":
	case "bcc":
	$to .= ",".$item['value'];
	default:
	break;
	}
	}
	if ($to == "") {
	return $this->raiseError("Message did not contain any recipents");
	}
	$to = substr($to,1);
	return array($to,$header,$this->_body);
	}

	/**
	* Returns a xml copy of the output of
	* Mail_mimeDecode::decode. Pass the output in as the
	* argument. This function can be called statically. Eg:
	*
	* $output = $obj->decode();
	* $xml = Mail_mimeDecode::getXML($output);
	*
	* The DTD used for this should have been in the package. Or
	* alternatively you can get it from cvs, or here:
	* http://www.phpguru.org/xmail/xmail.dtd.
	*
	* @param object Input to convert to xml. This should be the
	* output of the Mail_mimeDecode::decode function
	* @return string XML version of input
	* @access public
	*/
	function getXML($input)
	{
	$crlf = "\r\n";
	$output = '<?xml version=\'1.0\'?>' . $crlf .
	'<!DOCTYPE email SYSTEM "http://www.phpguru.org/xmail/xmail.dtd">' . $crlf .
	'<email>' . $crlf .
	Mail_mimeDecode::_getXML($input) .
	'</email>';

	return $output;
	}

	/**
	* Function that does the actual conversion to xml. Does a single
	* mimepart at a time.
	*
	* @param object Input to convert to xml. This is a mimepart object.
	* It may or may not contain subparts.
	* @param integer Number of tabs to indent
	* @return string XML version of input
	* @access private
	*/
	function _getXML($input, $indent = 1)
	{
	$htab = "\t";
	$crlf = "\r\n";
	$output = '';
	$headers = @(array)$input->headers;

	foreach ($headers as $hdr_name => $hdr_value) {

	// Multiple headers with this name
	if (is_array($headers[$hdr_name])) {
	for ($i = 0; $i < count($hdr_value); $i++) {
	$output .= Mail_mimeDecode::_getXML_helper($hdr_name, $hdr_value[$i], $indent);
	}

	// Only one header of this sort
	} else {
	$output .= Mail_mimeDecode::_getXML_helper($hdr_name, $hdr_value, $indent);
	}
	}

	if (!empty($input->parts)) {
	for ($i = 0; $i < count($input->parts); $i++) {
	$output .= $crlf . str_repeat($htab, $indent) . '<mimepart>' . $crlf .
	Mail_mimeDecode::_getXML($input->parts[$i], $indent+1) .
	str_repeat($htab, $indent) . '</mimepart>' . $crlf;
	}
	} elseif (isset($input->body)) {
	$output .= $crlf . str_repeat($htab, $indent) . '<body><![CDATA[' .
	$input->body . ']]></body>' . $crlf;
	}

	return $output;
	}

	/**
	* Helper function to _getXML(). Returns xml of a header.
	*
	* @param string Name of header
	* @param string Value of header
	* @param integer Number of tabs to indent
	* @return string XML version of input
	* @access private
	*/
	function _getXML_helper($hdr_name, $hdr_value, $indent)
	{
	$htab = "\t";
	$crlf = "\r\n";
	$return = '';

	$new_hdr_value = ($hdr_name != 'received') ? Mail_mimeDecode::_parseHeaderValue($hdr_value) : array('value' => $hdr_value);
	$new_hdr_name = str_replace(' ', '-', ucwords(str_replace('-', ' ', $hdr_name)));

	// Sort out any parameters
	if (!empty($new_hdr_value['other'])) {
	foreach ($new_hdr_value['other'] as $paramname => $paramvalue) {
	$params[] = str_repeat($htab, $indent) . $htab . '<parameter>' . $crlf .
	str_repeat($htab, $indent) . $htab . $htab . '<paramname>' . htmlspecialchars($paramname) . '</paramname>' . $crlf .
	str_repeat($htab, $indent) . $htab . $htab . '<paramvalue>' . htmlspecialchars($paramvalue) . '</paramvalue>' . $crlf .
	str_repeat($htab, $indent) . $htab . '</parameter>' . $crlf;
	}

	$params = implode('', $params);
	} else {
	$params = '';
	}

	$return = str_repeat($htab, $indent) . '<header>' . $crlf .
	str_repeat($htab, $indent) . $htab . '<headername>' . htmlspecialchars($new_hdr_name) . '</headername>' . $crlf .
	str_repeat($htab, $indent) . $htab . '<headervalue>' . htmlspecialchars($new_hdr_value['value']) . '</headervalue>' . $crlf .
	$params .
	str_repeat($htab, $indent) . '</header>' . $crlf;

	return $return;
	}

	} // End of class

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