githubFork/roundcubemail.git

alecpl

2009-06-17 14f1c0fce20f21d27b0c1421344e13f3e89fb87c

commit \| author \| age
4e17e6	1	<?php
ab6f80	2	/**
T	3	* The Mail_mimeDecode class is used to decode mail/mime messages
	4	*
	5	* This class will parse a raw mime email and return
	6	* the structure. Returned structure is similar to
	7	* that returned by imap_fetchstructure().
	8	*
	9	* +----------------------------- IMPORTANT ------------------------------+
	10	* \| Usage of this class compared to native php extensions such as \|
	11	* \| mailparse or imap, is slow and may be feature deficient. If available\|
	12	* \| you are STRONGLY recommended to use the php extensions. \|
	13	* +----------------------------------------------------------------------+
	14	*
	15	* Compatible with PHP versions 4 and 5
	16	*
	17	* LICENSE: This LICENSE is in the BSD license style.
	18	* Copyright (c) 2002-2003, Richard Heyes <richard@phpguru.org>
	19	* Copyright (c) 2003-2006, PEAR <pear-group@php.net>
	20	* All rights reserved.
	21	*
	22	* Redistribution and use in source and binary forms, with or
	23	* without modification, are permitted provided that the following
	24	* conditions are met:
	25	*
	26	* - Redistributions of source code must retain the above copyright
	27	* notice, this list of conditions and the following disclaimer.
	28	* - Redistributions in binary form must reproduce the above copyright
	29	* notice, this list of conditions and the following disclaimer in the
	30	* documentation and/or other materials provided with the distribution.
	31	* - Neither the name of the authors, nor the names of its contributors
	32	* may be used to endorse or promote products derived from this
	33	* software without specific prior written permission.
	34	*
	35	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
	36	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	37	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	38	* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
	39	* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	40	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	41	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	42	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	43	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	44	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
	45	* THE POSSIBILITY OF SUCH DAMAGE.
	46	*
	47	* @category Mail
	48	* @package Mail_Mime
	49	* @author Richard Heyes <richard@phpguru.org>
	50	* @author George Schlossnagle <george@omniti.com>
	51	* @author Cipriano Groenendal <cipri@php.net>
	52	* @author Sean Coates <sean@php.net>
	53	* @copyright 2003-2006 PEAR <pear-group@php.net>
	54	* @license http://www.opensource.org/licenses/bsd-license.php BSD License
	55	* @version CVS: $Id$
	56	* @link http://pear.php.net/package/Mail_mime
	57	*/
4e17e6	58
T	59
	60	/**
ab6f80	61	* require PEAR
T	62	*
	63	* This package depends on PEAR to raise errors.
	64	*/
	65	require_once 'PEAR.php';
4e17e6	66
T	67
ab6f80	68	/**
T	69	* The Mail_mimeDecode class is used to decode mail/mime messages
	70	*
	71	* This class will parse a raw mime email and return the structure.
	72	* Returned structure is similar to that returned by imap_fetchstructure().
	73	*
	74	* +----------------------------- IMPORTANT ------------------------------+
	75	* \| Usage of this class compared to native php extensions such as \|
	76	* \| mailparse or imap, is slow and may be feature deficient. If available\|
	77	* \| you are STRONGLY recommended to use the php extensions. \|
	78	* +----------------------------------------------------------------------+
	79	*
	80	* @category Mail
	81	* @package Mail_Mime
	82	* @author Richard Heyes <richard@phpguru.org>
	83	* @author George Schlossnagle <george@omniti.com>
	84	* @author Cipriano Groenendal <cipri@php.net>
	85	* @author Sean Coates <sean@php.net>
	86	* @copyright 2003-2006 PEAR <pear-group@php.net>
	87	* @license http://www.opensource.org/licenses/bsd-license.php BSD License
	88	* @version Release: @package_version@
	89	* @link http://pear.php.net/package/Mail_mime
	90	*/
4e17e6	91	class Mail_mimeDecode extends PEAR
T	92	{
	93	/**
	94	* The raw email to decode
ab6f80	95	*
4e17e6	96	* @var string
ab6f80	97	* @access private
4e17e6	98	*/
T	99	var $_input;
	100
	101	/**
	102	* The header part of the input
ab6f80	103	*
4e17e6	104	* @var string
ab6f80	105	* @access private
4e17e6	106	*/
T	107	var $_header;
	108
	109	/**
	110	* The body part of the input
ab6f80	111	*
4e17e6	112	* @var string
ab6f80	113	* @access private
4e17e6	114	*/
T	115	var $_body;
	116
	117	/**
	118	* If an error occurs, this is used to store the message
ab6f80	119	*
4e17e6	120	* @var string
ab6f80	121	* @access private
4e17e6	122	*/
T	123	var $_error;
	124
	125	/**
	126	* Flag to determine whether to include bodies in the
	127	* returned object.
ab6f80	128	*
4e17e6	129	* @var boolean
ab6f80	130	* @access private
4e17e6	131	*/
T	132	var $_include_bodies;
	133
	134	/**
	135	* Flag to determine whether to decode bodies
ab6f80	136	*
4e17e6	137	* @var boolean
ab6f80	138	* @access private
4e17e6	139	*/
T	140	var $_decode_bodies;
	141
	142	/**
	143	* Flag to determine whether to decode headers
ab6f80	144	*
4e17e6	145	* @var boolean
ab6f80	146	* @access private
4e17e6	147	*/
T	148	var $_decode_headers;
	149
	150	/**
	151	* Constructor.
	152	*
	153	* Sets up the object, initialise the variables, and splits and
	154	* stores the header and body of the input.
	155	*
	156	* @param string The input to decode
	157	* @access public
	158	*/
	159	function Mail_mimeDecode($input)
	160	{
	161	list($header, $body) = $this->_splitBodyHeader($input);
	162
	163	$this->_input = $input;
	164	$this->_header = $header;
	165	$this->_body = $body;
	166	$this->_decode_bodies = false;
	167	$this->_include_bodies = true;
	168	}
	169
	170	/**
	171	* Begins the decoding process. If called statically
	172	* it will create an object and call the decode() method
	173	* of it.
	174	*
	175	* @param array An array of various parameters that determine
	176	* various things:
	177	* include_bodies - Whether to include the body in the returned
	178	* object.
	179	* decode_bodies - Whether to decode the bodies
	180	* of the parts. (Transfer encoding)
	181	* decode_headers - Whether to decode headers
	182	* input - If called statically, this will be treated
	183	* as the input
	184	* @return object Decoded results
	185	* @access public
	186	*/
	187	function decode($params = null)
	188	{
	189	// determine if this method has been called statically
	190	$isStatic = !(isset($this) && get_class($this) == __CLASS__);
	191
	192	// Have we been called statically?
	193	// If so, create an object and pass details to that.
	194	if ($isStatic AND isset($params['input'])) {
	195
	196	$obj = new Mail_mimeDecode($params['input']);
	197	$structure = $obj->decode($params);
	198
	199	// Called statically but no input
	200	} elseif ($isStatic) {
	201	return PEAR::raiseError('Called statically and no input given');
	202
	203	// Called via an object
	204	} else {
	205	$this->_include_bodies = isset($params['include_bodies']) ?
	206	$params['include_bodies'] : false;
	207	$this->_decode_bodies = isset($params['decode_bodies']) ?
	208	$params['decode_bodies'] : false;
	209	$this->_decode_headers = isset($params['decode_headers']) ?
	210	$params['decode_headers'] : false;
	211
	212	$structure = $this->_decode($this->_header, $this->_body);
	213	if ($structure === false) {
	214	$structure = $this->raiseError($this->_error);
	215	}
	216	}
	217
	218	return $structure;
	219	}
	220
	221	/**
	222	* Performs the decoding. Decodes the body string passed to it
	223	* If it finds certain content-types it will call itself in a
	224	* recursive fashion
	225	*
	226	* @param string Header section
	227	* @param string Body section
	228	* @return object Results of decoding process
	229	* @access private
	230	*/
	231	function _decode($headers, $body, $default_ctype = 'text/plain')
	232	{
	233	$return = new stdClass;
	234	$return->headers = array();
	235	$headers = $this->_parseHeaders($headers);
	236
	237	foreach ($headers as $value) {
	238	if (isset($return->headers[strtolower($value['name'])]) AND !is_array($return->headers[strtolower($value['name'])])) {
	239	$return->headers[strtolower($value['name'])] = array($return->headers[strtolower($value['name'])]);
	240	$return->headers[strtolower($value['name'])][] = $value['value'];
	241
	242	} elseif (isset($return->headers[strtolower($value['name'])])) {
	243	$return->headers[strtolower($value['name'])][] = $value['value'];
	244
	245	} else {
	246	$return->headers[strtolower($value['name'])] = $value['value'];
	247	}
	248	}
	249
	250	reset($headers);
	251	while (list($key, $value) = each($headers)) {
	252	$headers[$key]['name'] = strtolower($headers[$key]['name']);
	253	switch ($headers[$key]['name']) {
	254
	255	case 'content-type':
	256	$content_type = $this->_parseHeaderValue($headers[$key]['value']);
	257
	258	if (preg_match('/([0-9a-z+.-]+)\/([0-9a-z+.-]+)/i', $content_type['value'], $regs)) {
	259	$return->ctype_primary = $regs[1];
	260	$return->ctype_secondary = $regs[2];
	261	}
856110	262
4e17e6	263	if (isset($content_type['other'])) {
T	264	while (list($p_name, $p_value) = each($content_type['other'])) {
	265	$return->ctype_parameters[$p_name] = $p_value;
	266	}
	267	}
	268	break;
	269
	270	case 'content-disposition':
	271	$content_disposition = $this->_parseHeaderValue($headers[$key]['value']);
	272	$return->disposition = $content_disposition['value'];
	273	if (isset($content_disposition['other'])) {
	274	while (list($p_name, $p_value) = each($content_disposition['other'])) {
	275	$return->d_parameters[$p_name] = $p_value;
	276	}
	277	}
	278	break;
	279
	280	case 'content-transfer-encoding':
	281	$content_transfer_encoding = $this->_parseHeaderValue($headers[$key]['value']);
	282	break;
	283	}
	284	}
	285
	286	if (isset($content_type)) {
	287	switch (strtolower($content_type['value'])) {
	288	case 'text/plain':
	289	$encoding = isset($content_transfer_encoding) ? $content_transfer_encoding['value'] : '7bit';
	290	$this->_include_bodies ? $return->body = ($this->_decode_bodies ? $this->_decodeBody($body, $encoding) : $body) : null;
	291	break;
	292
	293	case 'text/html':
	294	$encoding = isset($content_transfer_encoding) ? $content_transfer_encoding['value'] : '7bit';
	295	$this->_include_bodies ? $return->body = ($this->_decode_bodies ? $this->_decodeBody($body, $encoding) : $body) : null;
	296	break;
	297
	298	case 'multipart/parallel':
856110	299	case 'multipart/appledouble': // Appledouble mail
4e17e6	300	case 'multipart/report': // RFC1892
T	301	case 'multipart/signed': // PGP
	302	case 'multipart/digest':
	303	case 'multipart/alternative':
	304	case 'multipart/related':
	305	case 'multipart/mixed':
	306	if(!isset($content_type['other']['boundary'])){
	307	$this->_error = 'No boundary found for ' . $content_type['value'] . ' part';
	308	return false;
	309	}
15fee7	310
4e17e6	311	$default_ctype = (strtolower($content_type['value']) === 'multipart/digest') ? 'message/rfc822' : 'text/plain';
15fee7	312
4e17e6	313	$parts = $this->_boundarySplit($body, $content_type['other']['boundary']);
T	314	for ($i = 0; $i < count($parts); $i++) {
	315	list($part_header, $part_body) = $this->_splitBodyHeader($parts[$i]);
	316	$part = $this->_decode($part_header, $part_body, $default_ctype);
	317	if($part === false)
	318	$part = $this->raiseError($this->_error);
	319	$return->parts[] = $part;
	320	}
	321	break;
	322
	323	case 'message/rfc822':
	324	$obj = &new Mail_mimeDecode($body);
	325	$return->parts[] = $obj->decode(array('include_bodies' => $this->_include_bodies,
	326	'decode_bodies' => $this->_decode_bodies,
	327	'decode_headers' => $this->_decode_headers));
	328	unset($obj);
	329	break;
	330
	331	default:
	332	if(!isset($content_transfer_encoding['value']))
	333	$content_transfer_encoding['value'] = '7bit';
	334	$this->_include_bodies ? $return->body = ($this->_decode_bodies ? $this->_decodeBody($body, $content_transfer_encoding['value']) : $body) : null;
	335	break;
	336	}
	337
	338	} else {
	339	$ctype = explode('/', $default_ctype);
	340	$return->ctype_primary = $ctype[0];
	341	$return->ctype_secondary = $ctype[1];
	342	$this->_include_bodies ? $return->body = ($this->_decode_bodies ? $this->_decodeBody($body) : $body) : null;
	343	}
	344
	345	return $return;
	346	}
	347
	348	/**
	349	* Given the output of the above function, this will return an
	350	* array of references to the parts, indexed by mime number.
	351	*
	352	* @param object $structure The structure to go through
	353	* @param string $mime_number Internal use only.
	354	* @return array Mime numbers
	355	*/
	356	function &getMimeNumbers(&$structure, $no_refs = false, $mime_number = '', $prepend = '')
	357	{
	358	$return = array();
	359	if (!empty($structure->parts)) {
	360	if ($mime_number != '') {
	361	$structure->mime_id = $prepend . $mime_number;
	362	$return[$prepend . $mime_number] = &$structure;
	363	}
	364	for ($i = 0; $i < count($structure->parts); $i++) {
	365
	366
	367	if (!empty($structure->headers['content-type']) AND substr(strtolower($structure->headers['content-type']), 0, 8) == 'message/') {
	368	$prepend = $prepend . $mime_number . '.';
	369	$_mime_number = '';
	370	} else {
	371	$_mime_number = ($mime_number == '' ? $i + 1 : sprintf('%s.%s', $mime_number, $i + 1));
	372	}
	373
	374	$arr = &Mail_mimeDecode::getMimeNumbers($structure->parts[$i], $no_refs, $_mime_number, $prepend);
	375	foreach ($arr as $key => $val) {
	376	$no_refs ? $return[$key] = '' : $return[$key] = &$arr[$key];
	377	}
	378	}
	379	} else {
	380	if ($mime_number == '') {
	381	$mime_number = '1';
	382	}
	383	$structure->mime_id = $prepend . $mime_number;
	384	$no_refs ? $return[$prepend . $mime_number] = '' : $return[$prepend . $mime_number] = &$structure;
	385	}
	386
	387	return $return;
	388	}
	389
	390	/**
	391	* Given a string containing a header and body
	392	* section, this function will split them (at the first
	393	* blank line) and return them.
	394	*
	395	* @param string Input to split apart
	396	* @return array Contains header and body section
	397	* @access private
	398	*/
	399	function _splitBodyHeader($input)
	400	{
	401	if (preg_match("/^(.?)\r?\n\r?\n(.)/s", $input, $match)) {
	402	return array($match[1], $match[2]);
	403	}
	404	$this->_error = 'Could not split header and body';
	405	return false;
	406	}
	407
	408	/**
	409	* Parse headers given in $input and return
	410	* as assoc array.
	411	*
	412	* @param string Headers to parse
	413	* @return array Contains parsed headers
	414	* @access private
	415	*/
	416	function _parseHeaders($input)
	417	{
	418
	419	if ($input !== '') {
	420	// Unfold the input
	421	$input = preg_replace("/\r?\n/", "\r\n", $input);
	422	$input = preg_replace("/\r\n(\t\| )+/", ' ', $input);
	423	$headers = explode("\r\n", trim($input));
	424
	425	foreach ($headers as $value) {
	426	$hdr_name = substr($value, 0, $pos = strpos($value, ':'));
	427	$hdr_value = substr($value, $pos+1);
	428	if($hdr_value[0] == ' ')
	429	$hdr_value = substr($hdr_value, 1);
	430
	431	$return[] = array(
	432	'name' => $hdr_name,
	433	'value' => $this->_decode_headers ? $this->_decodeHeader($hdr_value) : $hdr_value
	434	);
	435	}
	436	} else {
	437	$return = array();
	438	}
	439
	440	return $return;
	441	}
	442
	443	/**
	444	* Function to parse a header value,
	445	* extract first part, and any secondary
	446	* parts (after ;) This function is not as
	447	* robust as it could be. Eg. header comments
	448	* in the wrong place will probably break it.
	449	*
	450	* @param string Header value to parse
	451	* @return array Contains parsed result
	452	* @access private
	453	*/
	454	function _parseHeaderValue($input)
	455	{
	456
	457	if (($pos = strpos($input, ';')) !== false) {
	458
	459	$return['value'] = trim(substr($input, 0, $pos));
	460	$input = trim(substr($input, $pos+1));
	461
	462	if (strlen($input) > 0) {
	463
	464	// This splits on a semi-colon, if there's no preceeding backslash
	465	// Now works with quoted values; had to glue the \; breaks in PHP
	466	// the regex is already bordering on incomprehensible
	467	$splitRegex = '/([^;\'"][\'"]([^\'"]([^\'"]))[\'"][^;\'"]*\|([^;]+))(;\|$)/';
	468	preg_match_all($splitRegex, $input, $matches);
	469	$parameters = array();
	470	for ($i=0; $i<count($matches[0]); $i++) {
	471	$param = $matches[0][$i];
	472	while (substr($param, -2) == '\;') {
	473	$param .= $matches[0][++$i];
	474	}
	475	$parameters[] = $param;
	476	}
	477
	478	for ($i = 0; $i < count($parameters); $i++) {
	479	$param_name = trim(substr($parameters[$i], 0, $pos = strpos($parameters[$i], '=')), "'\";\t\\ ");
	480	$param_value = trim(str_replace('\;', ';', substr($parameters[$i], $pos + 1)), "'\";\t\\ ");
	481	if ($param_value[0] == '"') {
	482	$param_value = substr($param_value, 1, -1);
	483	}
	484	$return['other'][$param_name] = $param_value;
	485	$return['other'][strtolower($param_name)] = $param_value;
	486	}
	487	}
	488	} else {
	489	$return['value'] = trim($input);
	490	}
	491
	492	return $return;
	493	}
	494
	495	/**
	496	* This function splits the input based
	497	* on the given boundary
	498	*
	499	* @param string Input to parse
	500	* @return array Contains array of resulting mime parts
	501	* @access private
	502	*/
	503	function _boundarySplit($input, $boundary)
	504	{
	505	$parts = array();
	506
	507	$bs_possible = substr($boundary, 2, -2);
	508	$bs_check = '\"' . $bs_possible . '\"';
	509
	510	if ($boundary == $bs_check) {
	511	$boundary = $bs_possible;
	512	}
	513
	514	$tmp = explode('--' . $boundary, $input);
	515
15fee7	516	for ($i = 1; $i < count($tmp) - 1; $i++) {
4e17e6	517	$parts[] = $tmp[$i];
T	518	}
	519
	520	return $parts;
	521	}
	522
	523	/**
	524	* Given a header, this function will decode it
	525	* according to RFC2047. Probably not exactly
	526	* conformant, but it does pass all the given
	527	* examples (in RFC2047).
	528	*
	529	* @param string Input header value to decode
	530	* @return string Decoded header value
	531	* @access private
	532	*/
	533	function _decodeHeader($input)
	534	{
	535	// Remove white space between encoded-words
	536	$input = preg_replace('/(=\?[^?]+\?(q\|b)\?[^?]*\?=)(\s)+=\?/i', '\1=?', $input);
	537
	538	// For each encoded-word...
	539	while (preg_match('/(=\?([^?]+)\?(q\|b)\?([^?]*)\?=)/i', $input, $matches)) {
	540
	541	$encoded = $matches[1];
	542	$charset = $matches[2];
	543	$encoding = $matches[3];
	544	$text = $matches[4];
	545
	546	switch (strtolower($encoding)) {
	547	case 'b':
	548	$text = base64_decode($text);
	549	break;
	550
	551	case 'q':
	552	$text = str_replace('_', ' ', $text);
	553	preg_match_all('/=([a-f0-9]{2})/i', $text, $matches);
	554	foreach($matches[1] as $value)
	555	$text = str_replace('='.$value, chr(hexdec($value)), $text);
	556	break;
	557	}
	558
	559	$input = str_replace($encoded, $text, $input);
	560	}
	561
	562	return $input;
	563	}
	564
	565	/**
	566	* Given a body string and an encoding type,
	567	* this function will decode and return it.
	568	*
	569	* @param string Input body to decode
	570	* @param string Encoding type to use.
	571	* @return string Decoded body
	572	* @access private
	573	*/
	574	function _decodeBody($input, $encoding = '7bit')
	575	{
	576	switch (strtolower($encoding)) {
	577	case '7bit':
	578	return $input;
	579	break;
	580
	581	case 'quoted-printable':
	582	return $this->_quotedPrintableDecode($input);
	583	break;
	584
	585	case 'base64':
	586	return base64_decode($input);
	587	break;
	588
	589	default:
	590	return $input;
	591	}
	592	}
	593
	594	/**
	595	* Given a quoted-printable string, this
	596	* function will decode and return it.
	597	*
	598	* @param string Input body to decode
	599	* @return string Decoded body
	600	* @access private
	601	*/
	602	function _quotedPrintableDecode($input)
	603	{
	604	// Remove soft line breaks
	605	$input = preg_replace("/=\r?\n/", '', $input);
	606
	607	// Replace encoded characters
	608	$input = preg_replace('/=([a-f0-9]{2})/ie', "chr(hexdec('\\1'))", $input);
	609
	610	return $input;
	611	}
	612
	613	/**
	614	* Checks the input for uuencoded files and returns
	615	* an array of them. Can be called statically, eg:
	616	*
	617	* $files =& Mail_mimeDecode::uudecode($some_text);
	618	*
	619	* It will check for the begin 666 ... end syntax
	620	* however and won't just blindly decode whatever you
	621	* pass it.
	622	*
	623	* @param string Input body to look for attahcments in
	624	* @return array Decoded bodies, filenames and permissions
	625	* @access public
	626	* @author Unknown
	627	*/
	628	function &uudecode($input)
	629	{
	630	// Find all uuencoded sections
	631	preg_match_all("/begin ([0-7]{3}) (.+)\r?\n(.+)\r?\nend/Us", $input, $matches);
	632
	633	for ($j = 0; $j < count($matches[3]); $j++) {
	634
	635	$str = $matches[3][$j];
	636	$filename = $matches[2][$j];
	637	$fileperm = $matches[1][$j];
	638
	639	$file = '';
	640	$str = preg_split("/\r?\n/", trim($str));
	641	$strlen = count($str);
	642
	643	for ($i = 0; $i < $strlen; $i++) {
	644	$pos = 1;
	645	$d = 0;
	646	$len=(int)(((ord(substr($str[$i],0,1)) -32) - ' ') & 077);
	647
	648	while (($d + 3 <= $len) AND ($pos + 4 <= strlen($str[$i]))) {
	649	$c0 = (ord(substr($str[$i],$pos,1)) ^ 0x20);
	650	$c1 = (ord(substr($str[$i],$pos+1,1)) ^ 0x20);
	651	$c2 = (ord(substr($str[$i],$pos+2,1)) ^ 0x20);
	652	$c3 = (ord(substr($str[$i],$pos+3,1)) ^ 0x20);
	653	$file .= chr(((($c0 - ' ') & 077) << 2) \| ((($c1 - ' ') & 077) >> 4));
	654
	655	$file .= chr(((($c1 - ' ') & 077) << 4) \| ((($c2 - ' ') & 077) >> 2));
	656
	657	$file .= chr(((($c2 - ' ') & 077) << 6) \| (($c3 - ' ') & 077));
	658
	659	$pos += 4;
	660	$d += 3;
	661	}
	662
	663	if (($d + 2 <= $len) && ($pos + 3 <= strlen($str[$i]))) {
	664	$c0 = (ord(substr($str[$i],$pos,1)) ^ 0x20);
	665	$c1 = (ord(substr($str[$i],$pos+1,1)) ^ 0x20);
	666	$c2 = (ord(substr($str[$i],$pos+2,1)) ^ 0x20);
	667	$file .= chr(((($c0 - ' ') & 077) << 2) \| ((($c1 - ' ') & 077) >> 4));
	668
	669	$file .= chr(((($c1 - ' ') & 077) << 4) \| ((($c2 - ' ') & 077) >> 2));
	670
	671	$pos += 3;
	672	$d += 2;
	673	}
	674
	675	if (($d + 1 <= $len) && ($pos + 2 <= strlen($str[$i]))) {
	676	$c0 = (ord(substr($str[$i],$pos,1)) ^ 0x20);
	677	$c1 = (ord(substr($str[$i],$pos+1,1)) ^ 0x20);
	678	$file .= chr(((($c0 - ' ') & 077) << 2) \| ((($c1 - ' ') & 077) >> 4));
	679
	680	}
	681	}
	682	$files[] = array('filename' => $filename, 'fileperm' => $fileperm, 'filedata' => $file);
	683	}
	684
	685	return $files;
	686	}
	687
	688	/**
	689	* getSendArray() returns the arguments required for Mail::send()
	690	* used to build the arguments for a mail::send() call
	691	*
	692	* Usage:
	693	* $mailtext = Full email (for example generated by a template)
	694	* $decoder = new Mail_mimeDecode($mailtext);
	695	* $parts = $decoder->getSendArray();
	696	* if (!PEAR::isError($parts) {
	697	* list($recipents,$headers,$body) = $parts;
	698	* $mail = Mail::factory('smtp');
	699	* $mail->send($recipents,$headers,$body);
	700	* } else {
	701	* echo $parts->message;
	702	* }
	703	* @return mixed array of recipeint, headers,body or Pear_Error
	704	* @access public
	705	* @author Alan Knowles <alan@akbkhome.com>
	706	*/
	707	function getSendArray()
	708	{
	709	// prevent warning if this is not set
	710	$this->_decode_headers = FALSE;
	711	$headerlist =$this->_parseHeaders($this->_header);
	712	$to = "";
	713	if (!$headerlist) {
	714	return $this->raiseError("Message did not contain headers");
	715	}
	716	foreach($headerlist as $item) {
	717	$header[$item['name']] = $item['value'];
	718	switch (strtolower($item['name'])) {
	719	case "to":
	720	case "cc":
	721	case "bcc":
	722	$to = ",".$item['value'];
	723	default:
	724	break;
	725	}
	726	}
	727	if ($to == "") {
	728	return $this->raiseError("Message did not contain any recipents");
	729	}
	730	$to = substr($to,1);
	731	return array($to,$header,$this->_body);
	732	}
	733
	734	/**
	735	* Returns a xml copy of the output of
	736	* Mail_mimeDecode::decode. Pass the output in as the
	737	* argument. This function can be called statically. Eg:
	738	*
	739	* $output = $obj->decode();
	740	* $xml = Mail_mimeDecode::getXML($output);
	741	*
	742	* The DTD used for this should have been in the package. Or
	743	* alternatively you can get it from cvs, or here:
	744	* http://www.phpguru.org/xmail/xmail.dtd.
	745	*
	746	* @param object Input to convert to xml. This should be the
	747	* output of the Mail_mimeDecode::decode function
	748	* @return string XML version of input
	749	* @access public
	750	*/
	751	function getXML($input)
	752	{
	753	$crlf = "\r\n";
	754	$output = '<?xml version=\'1.0\'?>' . $crlf .
	755	'<!DOCTYPE email SYSTEM "http://www.phpguru.org/xmail/xmail.dtd">' . $crlf .
	756	'<email>' . $crlf .
	757	Mail_mimeDecode::_getXML($input) .
	758	'</email>';
	759
	760	return $output;
	761	}
	762
	763	/**
	764	* Function that does the actual conversion to xml. Does a single
	765	* mimepart at a time.
	766	*
	767	* @param object Input to convert to xml. This is a mimepart object.
	768	* It may or may not contain subparts.
	769	* @param integer Number of tabs to indent
	770	* @return string XML version of input
	771	* @access private
	772	*/
	773	function _getXML($input, $indent = 1)
	774	{
	775	$htab = "\t";
	776	$crlf = "\r\n";
	777	$output = '';
	778	$headers = @(array)$input->headers;
	779
	780	foreach ($headers as $hdr_name => $hdr_value) {
	781
	782	// Multiple headers with this name
	783	if (is_array($headers[$hdr_name])) {
	784	for ($i = 0; $i < count($hdr_value); $i++) {
	785	$output .= Mail_mimeDecode::_getXML_helper($hdr_name, $hdr_value[$i], $indent);
	786	}
	787
	788	// Only one header of this sort
	789	} else {
	790	$output .= Mail_mimeDecode::_getXML_helper($hdr_name, $hdr_value, $indent);
	791	}
	792	}
	793
	794	if (!empty($input->parts)) {
	795	for ($i = 0; $i < count($input->parts); $i++) {
	796	$output .= $crlf . str_repeat($htab, $indent) . '<mimepart>' . $crlf .
	797	Mail_mimeDecode::_getXML($input->parts[$i], $indent+1) .
	798	str_repeat($htab, $indent) . '</mimepart>' . $crlf;
	799	}
	800	} elseif (isset($input->body)) {
	801	$output .= $crlf . str_repeat($htab, $indent) . '<body><![CDATA[' .
	802	$input->body . ']]></body>' . $crlf;
	803	}
	804
	805	return $output;
	806	}
	807
	808	/**
	809	* Helper function to _getXML(). Returns xml of a header.
	810	*
	811	* @param string Name of header
	812	* @param string Value of header
	813	* @param integer Number of tabs to indent
	814	* @return string XML version of input
	815	* @access private
	816	*/
	817	function _getXML_helper($hdr_name, $hdr_value, $indent)
	818	{
	819	$htab = "\t";
	820	$crlf = "\r\n";
	821	$return = '';
	822
	823	$new_hdr_value = ($hdr_name != 'received') ? Mail_mimeDecode::_parseHeaderValue($hdr_value) : array('value' => $hdr_value);
	824	$new_hdr_name = str_replace(' ', '-', ucwords(str_replace('-', ' ', $hdr_name)));
	825
	826	// Sort out any parameters
	827	if (!empty($new_hdr_value['other'])) {
	828	foreach ($new_hdr_value['other'] as $paramname => $paramvalue) {
	829	$params[] = str_repeat($htab, $indent) . $htab . '<parameter>' . $crlf .
	830	str_repeat($htab, $indent) . $htab . $htab . '<paramname>' . htmlspecialchars($paramname) . '</paramname>' . $crlf .
	831	str_repeat($htab, $indent) . $htab . $htab . '<paramvalue>' . htmlspecialchars($paramvalue) . '</paramvalue>' . $crlf .
	832	str_repeat($htab, $indent) . $htab . '</parameter>' . $crlf;
	833	}
	834
	835	$params = implode('', $params);
	836	} else {
	837	$params = '';
	838	}
	839
	840	$return = str_repeat($htab, $indent) . '<header>' . $crlf .
	841	str_repeat($htab, $indent) . $htab . '<headername>' . htmlspecialchars($new_hdr_name) . '</headername>' . $crlf .
	842	str_repeat($htab, $indent) . $htab . '<headervalue>' . htmlspecialchars($new_hdr_value['value']) . '</headervalue>' . $crlf .
	843	$params .
	844	str_repeat($htab, $indent) . '</header>' . $crlf;
	845
	846	return $return;
	847	}
	848
	849	} // End of class