githubFork/roundcubemail.git

Aleksander Machniak

2014-08-24 5f58127eae9ed8c54c190506e11af13e8ba57170

commit \| author \| age
8fa58e	1	<?php
T	2
	3	/*
	4	+-----------------------------------------------------------------------+
e019f2	5	\| This file is part of the Roundcube Webmail client \|
f5e7b3	6	\| Copyright (C) 2008-2010, The Roundcube Dev Team \|
7fe381	7	\| \|
T	8	\| Licensed under the GNU General Public License version 3 or \|
	9	\| any later version with exceptions for skins & plugins. \|
	10	\| See the README file for a full license statement. \|
8fa58e	11	\| \|
T	12	\| PURPOSE: \|
	13	\| Logical representation of a mail message with all its data \|
	14	\| and related functions \|
	15	+-----------------------------------------------------------------------+
	16	\| Author: Thomas Bruederli <roundcube@gmail.com> \|
	17	+-----------------------------------------------------------------------+
	18	*/
	19
	20	/**
45f56c	21	* Logical representation of a mail message with all its data
T	22	* and related functions
8fa58e	23	*
9ab346	24	* @package Framework
AM	25	* @subpackage Storage
8fa58e	26	* @author Thomas Bruederli <roundcube@gmail.com>
T	27	*/
	28	class rcube_message
	29	{
5c461b	30	/**
be98df	31	* Instace of framework class.
5c461b	32	*
be98df	33	* @var rcube
5c461b	34	*/
d311d8	35	private $app;
5c461b	36
A	37	/**
8b92d2	38	* Instance of storage class
5c461b	39	*
8b92d2	40	* @var rcube_storage
5c461b	41	*/
8b92d2	42	private $storage;
1c4f23	43
A	44	/**
	45	* Instance of mime class
	46	*
	47	* @var rcube_mime
	48	*/
	49	private $mime;
d311d8	50	private $opt = array();
A	51	private $parse_alternative = false;
2ae58f	52
10562d	53	public $uid;
AM	54	public $folder;
d311d8	55	public $headers;
A	56	public $parts = array();
	57	public $mime_parts = array();
287eff	58	public $inline_parts = array();
d311d8	59	public $attachments = array();
A	60	public $subject = '';
	61	public $sender = null;
	62	public $is_safe = false;
2ae58f	63
193fb4	64
d311d8	65	/**
A	66	* __construct
	67	*
	68	* Provide a uid, and parse message structure.
	69	*
10562d	70	* @param string $uid The message UID.
AM	71	* @param string $folder Folder name
d311d8	72	*
8b92d2	73	* @see self::$app, self::$storage, self::$opt, self::$parts
d311d8	74	*/
10562d	75	function __construct($uid, $folder = null)
8fa58e	76	{
e8cb51	77	// decode combined UID-folder identifier
188247	78	if (preg_match('/^\d+-.+/', $uid)) {
1d1fdc	79	list($uid, $folder) = explode('-', $uid, 2);
e8cb51	80	}
TB	81
1c4f23	82	$this->uid = $uid;
0c2596	83	$this->app = rcube::get_instance();
c321a9	84	$this->storage = $this->app->get_storage();
10562d	85	$this->folder = strlen($folder) ? $folder : $this->storage->get_folder();
c321a9	86	$this->storage->set_options(array('all_headers' => true));
10562d	87
AM	88	// Set current folder
	89	$this->storage->set_folder($this->folder);
64e3e8	90
c321a9	91	$this->headers = $this->storage->get_message($uid);
64e3e8	92
4fdaa0	93	if (!$this->headers) {
64e3e8	94	return;
4fdaa0	95	}
8fa58e	96
1c4f23	97	$this->mime = new rcube_mime($this->headers->charset);
A	98
4fdaa0	99	$this->subject = $this->headers->get('subject');
1c4f23	100	list(, $this->sender) = each($this->mime->decode_address_list($this->headers->from, 1));
64e3e8	101
f11142	102	$this->set_safe((intval($_GET['_safe']) \|\| $_SESSION['safe_messages'][$this->folder.':'.$uid]));
d311d8	103	$this->opt = array(
A	104	'safe' => $this->is_safe,
	105	'prefer_html' => $this->app->config->get('prefer_html'),
0c2596	106	'get_url' => $this->app->url(array(
A	107	'action' => 'get',
	108	'mbox' => $this->storage->get_folder(),
	109	'uid' => $uid))
d311d8	110	);
8fa58e	111
80152b	112	if (!empty($this->headers->structure)) {
A	113	$this->get_mime_numbers($this->headers->structure);
	114	$this->parse_structure($this->headers->structure);
aa16b4	115	}
d311d8	116	else {
c321a9	117	$this->body = $this->storage->get_body($uid);
d311d8	118	}
A	119
	120	// notify plugins and let them analyze this structured message object
	121	$this->app->plugins->exec_hook('message_load', array('object' => $this));
	122	}
2ae58f	123
A	124
d311d8	125	/**
A	126	* Return a (decoded) message header
	127	*
5c461b	128	* @param string $name Header name
A	129	* @param bool $row Don't mime-decode the value
d311d8	130	* @return string Header value
A	131	*/
	132	public function get_header($name, $raw = false)
	133	{
4fdaa0	134	if (empty($this->headers)) {
1c4f23	135	return null;
4fdaa0	136	}
1c4f23	137
4fdaa0	138	return $this->headers->get($name, !$raw);
d311d8	139	}
A	140
2ae58f	141
d311d8	142	/**
A	143	* Set is_safe var and session data
	144	*
5c461b	145	* @param bool $safe enable/disable
d311d8	146	*/
A	147	public function set_safe($safe = true)
	148	{
f11142	149	$_SESSION['safe_messages'][$this->folder.':'.$this->uid] = $this->is_safe = $safe;
d311d8	150	}
A	151
	152
	153	/**
	154	* Compose a valid URL for getting a message part
	155	*
5c461b	156	* @param string $mime_id Part MIME-ID
a021d6	157	* @param mixed $embed Mimetype class for parts to be embedded
d311d8	158	* @return string URL or false if part does not exist
A	159	*/
57486f	160	public function get_part_url($mime_id, $embed = false)
d311d8	161	{
A	162	if ($this->mime_parts[$mime_id])
a021d6	163	return $this->opt['get_url'] . '&_part=' . $mime_id . ($embed ? '&_embed=1&_mimeclass=' . $embed : '');
aa16b4	164	else
d311d8	165	return false;
8fa58e	166	}
T	167
d311d8	168
A	169	/**
	170	* Get content of a specific part of this message
	171	*
71950d	172	* @param string $mime_id Part MIME-ID
A	173	* @param resource $fp File pointer to save the message part
	174	* @param boolean $skip_charset_conv Disables charset conversion
dff2c7	175	* @param int $max_bytes Only read this number of bytes
ae8533	176	* @param boolean $formatted Enables formatting of text/* parts bodies
71950d	177	*
d311d8	178	* @return string Part content
A	179	*/
ae8533	180	public function get_part_content($mime_id, $fp = null, $skip_charset_conv = false, $max_bytes = 0, $formatted = true)
d311d8	181	{
A	182	if ($part = $this->mime_parts[$mime_id]) {
	183	// stored in message structure (winmail/inline-uuencode)
8b92d2	184	if (!empty($part->body) \|\| $part->encoding == 'stream') {
d311d8	185	if ($fp) {
A	186	fwrite($fp, $part->body);
	187	}
	188	return $fp ? true : $part->body;
	189	}
10562d	190
d311d8	191	// get from IMAP
10562d	192	$this->storage->set_folder($this->folder);
AM	193
ae8533	194	return $this->storage->get_message_part($this->uid, $mime_id, $part,
AM	195	NULL, $fp, $skip_charset_conv, $max_bytes, $formatted);
10562d	196	}
8fa58e	197	}
T	198
	199
d311d8	200	/**
5c26bd	201	* Determine if the message contains a HTML part. This must to be
AM	202	* a real part not an attachment (or its part)
d311d8	203	*
5c26bd	204	* @param bool $enriched Enables checking for text/enriched parts too
33423a	205	*
d311d8	206	* @return bool True if a HTML is available, False if not
A	207	*/
5c26bd	208	function has_html_part($enriched = false)
d311d8	209	{
A	210	// check all message parts
574928	211	foreach ($this->mime_parts as $part) {
52d0d9	212	if ($part->mimetype == 'text/html' \|\| ($enriched && $part->mimetype == 'text/enriched')) {
0ef894	213	// Skip if part is an attachment, don't use is_attachment() here
AM	214	if ($part->filename) {
5c26bd	215	continue;
AM	216	}
33423a	217
5c26bd	218	$level = explode('.', $part->mime_id);
f8101f	219	$depth = count($level);
5c26bd	220
5a2d2a	221	// Check if the part belongs to higher-level's multipart part
f8101f	222	// this can be alternative/related/signed/encrypted or mixed
5c26bd	223	while (array_pop($level) !== null) {
f8101f	224	$parent_depth = count($level);
TB	225	if (!$parent_depth) {
5c26bd	226	return true;
33423a	227	}
A	228
5c26bd	229	$parent = $this->mime_parts[join('.', $level)];
f8101f	230	if (!preg_match('/^multipart\/(alternative\|related\|signed\|encrypted\|mixed)$/', $parent->mimetype)
TB	231	\|\| ($parent->mimetype == 'multipart/mixed' && $parent_depth < $depth - 1)) {
5c26bd	232	continue 2;
33423a	233	}
A	234	}
	235
5c26bd	236	if ($part->size) {
AM	237	return true;
	238	}
	239	}
	240	}
	241
	242	return false;
	243	}
	244
	245
	246	/**
	247	* Determine if the message contains a text/plain part. This must to be
	248	* a real part not an attachment (or its part)
	249	*
	250	* @return bool True if a plain text part is available, False if not
	251	*/
	252	function has_text_part()
	253	{
	254	// check all message parts
574928	255	foreach ($this->mime_parts as $part) {
5c26bd	256	if ($part->mimetype == 'text/plain') {
0ef894	257	// Skip if part is an attachment, don't use is_attachment() here
AM	258	if ($part->filename) {
5c26bd	259	continue;
AM	260	}
	261
	262	$level = explode('.', $part->mime_id);
	263
	264	// Check if the part belongs to higher-level's alternative/related
	265	while (array_pop($level) !== null) {
	266	if (!count($level)) {
	267	return true;
	268	}
	269
	270	$parent = $this->mime_parts[join('.', $level)];
	271	if ($parent->mimetype != 'multipart/alternative' && $parent->mimetype != 'multipart/related') {
	272	continue 2;
	273	}
	274	}
	275
	276	if ($part->size) {
	277	return true;
	278	}
33423a	279	}
d311d8	280	}
A	281
	282	return false;
	283	}
	284
	285
	286	/**
	287	* Return the first HTML part of this message
	288	*
	289	* @return string HTML message part content
	290	*/
	291	function first_html_part()
	292	{
	293	// check all message parts
33423a	294	foreach ($this->mime_parts as $pid => $part) {
A	295	if ($part->mimetype == 'text/html') {
	296	return $this->get_part_content($pid);
d311d8	297	}
A	298	}
	299	}
	300
	301
	302	/**
	303	* Return the first text part of this message
	304	*
868deb	305	* @param rcube_message_part $part Reference to the part if found
d311d8	306	* @return string Plain text message/part content
A	307	*/
868deb	308	function first_text_part(&$part=null)
d311d8	309	{
A	310	// no message structure, return complete body
	311	if (empty($this->parts))
	312	return $this->body;
	313
	314	// check all message parts
	315	foreach ($this->mime_parts as $mime_id => $part) {
33423a	316	if ($part->mimetype == 'text/plain') {
8b92d2	317	return $this->get_part_content($mime_id);
d311d8	318	}
33423a	319	else if ($part->mimetype == 'text/html') {
8b92d2	320	$out = $this->get_part_content($mime_id);
d311d8	321
A	322	// create instance of html2text class
66afd7	323	$txt = new rcube_html2text($out);
868deb	324	return $txt->get_text();
d311d8	325	}
A	326	}
	327
868deb	328	$part = null;
A	329	return null;
d311d8	330	}
A	331
	332
	333	/**
3efc74	334	* Checks if part of the message is an attachment (or part of it)
AM	335	*
	336	* @param rcube_message_part $part Message part
	337	*
	338	* @return bool True if the part is an attachment part
	339	*/
	340	public function is_attachment($part)
	341	{
	342	foreach ($this->attachments as $att_part) {
	343	if ($att_part->mime_id == $part->mime_id) {
	344	return true;
	345	}
	346
	347	// check if the part is a subpart of another attachment part (message/rfc822)
	348	if ($att_part->mimetype == 'message/rfc822') {
	349	if (in_array($part, (array)$att_part->parts)) {
	350	return true;
	351	}
	352	}
	353	}
	354
	355	return false;
	356	}
	357
	358
	359	/**
8b92d2	360	* Read the message structure returend by the IMAP server
d311d8	361	* and build flat lists of content parts and attachments
A	362	*
5c461b	363	* @param rcube_message_part $structure Message structure node
A	364	* @param bool $recursive True when called recursively
d311d8	365	*/
A	366	private function parse_structure($structure, $recursive = false)
	367	{
	368	// real content-type of message/rfc822 part
a8a72e	369	if ($structure->mimetype == 'message/rfc822' && $structure->real_mimetype) {
5ced9c	370	$mimetype = $structure->real_mimetype;
a8a72e	371
TB	372	// parse headers from message/rfc822 part
7ae7cd	373	if (!isset($structure->headers['subject']) && !isset($structure->headers['from'])) {
3725cf	374	list($headers, ) = explode("\r\n\r\n", $this->get_part_content($structure->mime_id, null, true, 32768));
a8a72e	375	$structure->headers = rcube_mime::parse_headers($headers);
TB	376	}
	377	}
5ced9c	378	else
A	379	$mimetype = $structure->mimetype;
d311d8	380
A	381	// show message headers
ddfdd8	382	if ($recursive && is_array($structure->headers) &&
TB	383	(isset($structure->headers['subject']) \|\| $structure->headers['from'] \|\| $structure->headers['to'])) {
d311d8	384	$c = new stdClass;
A	385	$c->type = 'headers';
c5d7c9	386	$c->headers = $structure->headers;
d311d8	387	$this->parts[] = $c;
A	388	}
5ced9c	389
A	390	// Allow plugins to handle message parts
	391	$plugin = $this->app->plugins->exec_hook('message_part_structure',
	392	array('object' => $this, 'structure' => $structure,
	393	'mimetype' => $mimetype, 'recursive' => $recursive));
	394
	395	if ($plugin['abort'])
	396	return;
	397
	398	$structure = $plugin['structure'];
	399	list($message_ctype_primary, $message_ctype_secondary) = explode('/', $plugin['mimetype']);
d311d8	400
A	401	// print body if message doesn't have multiple parts
	402	if ($message_ctype_primary == 'text' && !$recursive) {
c23dc8	403	// parts with unsupported type add to attachments list
AM	404	if (!in_array($message_ctype_secondary, array('plain', 'html', 'enriched'))) {
	405	$this->attachments[] = $structure;
	406	return;
	407	}
	408
d311d8	409	$structure->type = 'content';
c5d7c9	410	$this->parts[] = $structure;
8757f5	411
d311d8	412	// Parse simple (plain text) message body
c23dc8	413	if ($message_ctype_secondary == 'plain') {
d311d8	414	foreach ((array)$this->uu_decode($structure) as $uupart) {
A	415	$this->mime_parts[$uupart->mime_id] = $uupart;
	416	$this->attachments[] = $uupart;
	417	}
c23dc8	418	}
d311d8	419	}
A	420	// the same for pgp signed messages
	421	else if ($mimetype == 'application/pgp' && !$recursive) {
	422	$structure->type = 'content';
c5d7c9	423	$this->parts[] = $structure;
d311d8	424	}
e730cd	425	// message contains (more than one!) alternative parts
A	426	else if ($mimetype == 'multipart/alternative'
	427	&& is_array($structure->parts) && count($structure->parts) > 1
	428	) {
c5d7c9	429	$plain_part = null;
AM	430	$html_part = null;
	431	$print_part = null;
	432	$related_part = null;
	433	$attach_part = null;
d311d8	434
c5d7c9	435	// get html/plaintext parts, other add to attachments list
d311d8	436	foreach ($structure->parts as $p => $sub_part) {
A	437	$sub_mimetype = $sub_part->mimetype;
cb0f03	438	$is_multipart = preg_match('/^multipart\/(related\|relative\|mixed\|alternative)/', $sub_mimetype);
8757f5	439
5fbfde	440	// skip empty text parts
c5d7c9	441	if (!$sub_part->size && !$is_multipart) {
5f4095	442	continue;
5fbfde	443	}
5f4095	444
170702	445	// We've encountered (malformed) messages with more than
AM	446	// one text/plain or text/html part here. There's no way to choose
	447	// which one is better, so we'll display first of them and add
	448	// others as attachments (#1489358)
	449
d311d8	450	// check if sub part is
c5d7c9	451	if ($is_multipart)
AM	452	$related_part = $p;
170702	453	else if ($sub_mimetype == 'text/plain' && !$plain_part)
d311d8	454	$plain_part = $p;
170702	455	else if ($sub_mimetype == 'text/html' && !$html_part)
d311d8	456	$html_part = $p;
170702	457	else if ($sub_mimetype == 'text/enriched' && !$enriched_part)
d311d8	458	$enriched_part = $p;
170702	459	else {
AM	460	// add unsupported/unrecognized parts to attachments list
	461	$this->attachments[] = $sub_part;
	462	}
d311d8	463	}
A	464
	465	// parse related part (alternative part could be in here)
	466	if ($related_part !== null && !$this->parse_alternative) {
	467	$this->parse_alternative = true;
	468	$this->parse_structure($structure->parts[$related_part], true);
	469	$this->parse_alternative = false;
8757f5	470
d311d8	471	// if plain part was found, we should unset it if html is preferred
A	472	if ($this->opt['prefer_html'] && count($this->parts))
	473	$plain_part = null;
	474	}
	475
	476	// choose html/plain part to print
	477	if ($html_part !== null && $this->opt['prefer_html']) {
c5d7c9	478	$print_part = $structure->parts[$html_part];
d311d8	479	}
A	480	else if ($enriched_part !== null) {
c5d7c9	481	$print_part = $structure->parts[$enriched_part];
d311d8	482	}
A	483	else if ($plain_part !== null) {
c5d7c9	484	$print_part = $structure->parts[$plain_part];
d311d8	485	}
A	486
	487	// add the right message body
	488	if (is_object($print_part)) {
	489	$print_part->type = 'content';
	490	$this->parts[] = $print_part;
	491	}
	492	// show plaintext warning
	493	else if ($html_part !== null && empty($this->parts)) {
	494	$c = new stdClass;
	495	$c->type = 'content';
	496	$c->ctype_primary = 'text';
	497	$c->ctype_secondary = 'plain';
0c2596	498	$c->mimetype = 'text/plain';
A	499	$c->realtype = 'text/html';
d311d8	500
A	501	$this->parts[] = $c;
	502	}
	503	}
	504	// this is an ecrypted message -> create a plaintext body with the according message
	505	else if ($mimetype == 'multipart/encrypted') {
	506	$p = new stdClass;
	507	$p->type = 'content';
	508	$p->ctype_primary = 'text';
	509	$p->ctype_secondary = 'plain';
0c2596	510	$p->mimetype = 'text/plain';
A	511	$p->realtype = 'multipart/encrypted';
c054ec	512
A	513	$this->parts[] = $p;
d311d8	514	}
ee89c6	515	// this is an S/MIME ecrypted message -> create a plaintext body with the according message
AM	516	else if ($mimetype == 'application/pkcs7-mime') {
	517	$p = new stdClass;
	518	$p->type = 'content';
	519	$p->ctype_primary = 'text';
	520	$p->ctype_secondary = 'plain';
	521	$p->mimetype = 'text/plain';
	522	$p->realtype = 'application/pkcs7-mime';
	523
	524	$this->parts[] = $p;
	525	}
d311d8	526	// message contains multiple parts
A	527	else if (is_array($structure->parts) && !empty($structure->parts)) {
	528	// iterate over parts
	529	for ($i=0; $i < count($structure->parts); $i++) {
	530	$mail_part = &$structure->parts[$i];
	531	$primary_type = $mail_part->ctype_primary;
	532	$secondary_type = $mail_part->ctype_secondary;
8fa58e	533
d311d8	534	// real content-type of message/rfc822
A	535	if ($mail_part->real_mimetype) {
	536	$part_orig_mimetype = $mail_part->mimetype;
	537	$part_mimetype = $mail_part->real_mimetype;
	538	list($primary_type, $secondary_type) = explode('/', $part_mimetype);
	539	}
596301	540	else {
TB	541	$part_mimetype = $part_orig_mimetype = $mail_part->mimetype;
	542	}
6b6f2e	543
d311d8	544	// multipart/alternative
A	545	if ($primary_type == 'multipart') {
	546	$this->parse_structure($mail_part, true);
	547
	548	// list message/rfc822 as attachment as well (mostly .eml)
	549	if ($part_orig_mimetype == 'message/rfc822' && !empty($mail_part->filename))
	550	$this->attachments[] = $mail_part;
	551	}
f22ea7	552	// part text/[plain\|html] or delivery status
d311d8	553	else if ((($part_mimetype == 'text/plain' \|\| $part_mimetype == 'text/html') && $mail_part->disposition != 'attachment') \|\|
f22ea7	554	in_array($part_mimetype, array('message/delivery-status', 'text/rfc822-headers', 'message/disposition-notification'))
d311d8	555	) {
1a2f83	556	// Allow plugins to handle also this part
A	557	$plugin = $this->app->plugins->exec_hook('message_part_structure',
	558	array('object' => $this, 'structure' => $mail_part,
	559	'mimetype' => $part_mimetype, 'recursive' => true));
	560
	561	if ($plugin['abort'])
	562	continue;
	563
9c299e	564	if ($part_mimetype == 'text/html' && $mail_part->size) {
63f9de	565	$got_html_part = true;
A	566	}
	567
1a2f83	568	$mail_part = $plugin['structure'];
A	569	list($primary_type, $secondary_type) = explode('/', $plugin['mimetype']);
	570
d311d8	571	// add text part if it matches the prefs
A	572	if (!$this->parse_alternative \|\|
	573	($secondary_type == 'html' && $this->opt['prefer_html']) \|\|
	574	($secondary_type == 'plain' && !$this->opt['prefer_html'])
	575	) {
	576	$mail_part->type = 'content';
	577	$this->parts[] = $mail_part;
	578	}
fd371a	579
d311d8	580	// list as attachment as well
f7c11e	581	if (!empty($mail_part->filename)) {
AM	582	$this->attachments[] = $mail_part;
	583	}
d311d8	584	}
A	585	// part message/*
8757f5	586	else if ($primary_type == 'message') {
d311d8	587	$this->parse_structure($mail_part, true);
A	588
	589	// list as attachment as well (mostly .eml)
	590	if (!empty($mail_part->filename))
	591	$this->attachments[] = $mail_part;
	592	}
	593	// ignore "virtual" protocol parts
	594	else if ($primary_type == 'protocol') {
	595	continue;
	596	}
	597	// part is Microsoft Outlook TNEF (winmail.dat)
	598	else if ($part_mimetype == 'application/ms-tnef') {
	599	foreach ((array)$this->tnef_decode($mail_part) as $tpart) {
	600	$this->mime_parts[$tpart->mime_id] = $tpart;
	601	$this->attachments[] = $tpart;
	602	}
	603	}
	604	// part is a file/attachment
	605	else if (preg_match('/^(inline\|attach)/', $mail_part->disposition) \|\|
8794f1	606	$mail_part->headers['content-id'] \|\|
A	607	($mail_part->filename &&
	608	(empty($mail_part->disposition) \|\| preg_match('/^[a-z0-9!#$&.+^_-]+$/i', $mail_part->disposition)))
d311d8	609	) {
A	610	// skip apple resource forks
	611	if ($message_ctype_secondary == 'appledouble' && $secondary_type == 'applefile')
	612	continue;
	613
	614	// part belongs to a related message and is linked
cb0f03	615	if (preg_match('/^multipart\/(related\|relative)/', $mimetype)
d311d8	616	&& ($mail_part->headers['content-id'] \|\| $mail_part->headers['content-location'])) {
A	617	if ($mail_part->headers['content-id'])
	618	$mail_part->content_id = preg_replace(array('/^</', '/>$/'), '', $mail_part->headers['content-id']);
	619	if ($mail_part->headers['content-location'])
	620	$mail_part->content_location = $mail_part->headers['content-base'] . $mail_part->headers['content-location'];
	621
	622	$this->inline_parts[] = $mail_part;
	623	}
	624	// attachment encapsulated within message/rfc822 part needs further decoding (#1486743)
	625	else if ($part_orig_mimetype == 'message/rfc822') {
	626	$this->parse_structure($mail_part, true);
fd371a	627
A	628	// list as attachment as well (mostly .eml)
	629	if (!empty($mail_part->filename))
	630	$this->attachments[] = $mail_part;
d311d8	631	}
b38925	632	// regular attachment with valid content type
A	633	// (content-type name regexp according to RFC4288.4.2)
2ae58f	634	else if (preg_match('/^[a-z0-9!#$&.+^_-]+\/[a-z0-9!#$&.+^_-]+$/i', $part_mimetype)) {
b38925	635	$this->attachments[] = $mail_part;
A	636	}
	637	// attachment with invalid content type
	638	// replace malformed content type with application/octet-stream (#1487767)
	639	else if ($mail_part->filename) {
	640	$mail_part->ctype_primary = 'application';
	641	$mail_part->ctype_secondary = 'octet-stream';
	642	$mail_part->mimetype = 'application/octet-stream';
	643
d311d8	644	$this->attachments[] = $mail_part;
A	645	}
	646	}
8757f5	647	// attachment part as message/rfc822 (#1488026)
A	648	else if ($mail_part->mimetype == 'message/rfc822') {
	649	$this->parse_structure($mail_part);
	650	}
d311d8	651	}
A	652
	653	// if this was a related part try to resolve references
cb0f03	654	if (preg_match('/^multipart\/(related\|relative)/', $mimetype) && sizeof($this->inline_parts)) {
d311d8	655	$a_replaces = array();
89d19c	656	$img_regexp = '/^image\/(gif\|jpe?g\|png\|tiff\|bmp\|svg)/';
d311d8	657
A	658	foreach ($this->inline_parts as $inline_object) {
a021d6	659	$part_url = $this->get_part_url($inline_object->mime_id, $inline_object->ctype_primary);
8cfba1	660	if (isset($inline_object->content_id))
d311d8	661	$a_replaces['cid:'.$inline_object->content_id] = $part_url;
63f9de	662	if ($inline_object->content_location) {
d311d8	663	$a_replaces[$inline_object->content_location] = $part_url;
63f9de	664	}
89d19c	665
A	666	if (!empty($inline_object->filename)) {
	667	// MS Outlook sends sometimes non-related attachments as related
	668	// In this case multipart/related message has only one text part
	669	// We'll add all such attachments to the attachments list
	670	if (!isset($got_html_part) && empty($inline_object->content_id)) {
	671	$this->attachments[] = $inline_object;
	672	}
	673	// MS Outlook sometimes also adds non-image attachments as related
	674	// We'll add all such attachments to the attachments list
	675	// Warning: some browsers support pdf in <img/>
	676	else if (!preg_match($img_regexp, $inline_object->mimetype)) {
	677	$this->attachments[] = $inline_object;
	678	}
	679	// @TODO: we should fetch HTML body and find attachment's content-id
	680	// to handle also image attachments without reference in the body
	681	// @TODO: should we list all image attachments in text mode?
02b6e6	682	}
d311d8	683	}
A	684
	685	// add replace array to each content part
	686	// (will be applied later when part body is available)
	687	foreach ($this->parts as $i => $part) {
	688	if ($part->type == 'content')
	689	$this->parts[$i]->replaces = $a_replaces;
	690	}
	691	}
	692	}
	693	// message is a single part non-text
	694	else if ($structure->filename) {
	695	$this->attachments[] = $structure;
	696	}
3e58bf	697	// message is a single part non-text (without filename)
A	698	else if (preg_match('/application\//i', $mimetype)) {
	699	$this->attachments[] = $structure;
c5d7c9	700	}
AM	701	}
	702
	703
	704	/**
d311d8	705	* Fill aflat array with references to all parts, indexed by part numbers
A	706	*
5c461b	707	* @param rcube_message_part $part Message body structure
d311d8	708	*/
A	709	private function get_mime_numbers(&$part)
	710	{
	711	if (strlen($part->mime_id))
	712	$this->mime_parts[$part->mime_id] = &$part;
f19d86	713
d311d8	714	if (is_array($part->parts))
A	715	for ($i=0; $i<count($part->parts); $i++)
	716	$this->get_mime_numbers($part->parts[$i]);
	717	}
	718
	719
	720	/**
	721	* Decode a Microsoft Outlook TNEF part (winmail.dat)
	722	*
5c461b	723	* @param rcube_message_part $part Message part to decode
A	724	* @return array
d311d8	725	*/
A	726	function tnef_decode(&$part)
	727	{
	728	// @TODO: attachment may be huge, hadle it via file
10562d	729	if (!isset($part->body)) {
AM	730	$this->storage->set_folder($this->folder);
c321a9	731	$part->body = $this->storage->get_message_part($this->uid, $part->mime_id, $part);
10562d	732	}
d311d8	733
A	734	$parts = array();
f19d86	735	$tnef = new tnef_decoder;
A	736	$tnef_arr = $tnef->decompress($part->body);
d311d8	737
A	738	foreach ($tnef_arr as $pid => $winatt) {
	739	$tpart = new rcube_message_part;
	740
	741	$tpart->filename = trim($winatt['name']);
	742	$tpart->encoding = 'stream';
f19d86	743	$tpart->ctype_primary = trim(strtolower($winatt['type']));
A	744	$tpart->ctype_secondary = trim(strtolower($winatt['subtype']));
d311d8	745	$tpart->mimetype = $tpart->ctype_primary . '/' . $tpart->ctype_secondary;
A	746	$tpart->mime_id = 'winmail.' . $part->mime_id . '.' . $pid;
	747	$tpart->size = $winatt['size'];
	748	$tpart->body = $winatt['stream'];
	749
	750	$parts[] = $tpart;
	751	unset($tnef_arr[$pid]);
	752	}
f19d86	753
d311d8	754	return $parts;
A	755	}
	756
	757
	758	/**
	759	* Parse message body for UUencoded attachments bodies
	760	*
5c461b	761	* @param rcube_message_part $part Message part to decode
A	762	* @return array
d311d8	763	*/
A	764	function uu_decode(&$part)
	765	{
	766	// @TODO: messages may be huge, hadle body via file
10562d	767	if (!isset($part->body)) {
AM	768	$this->storage->set_folder($this->folder);
c321a9	769	$part->body = $this->storage->get_message_part($this->uid, $part->mime_id, $part);
10562d	770	}
d311d8	771
A	772	$parts = array();
	773	// FIXME: line length is max.65?
14f22f	774	$uu_regexp = '/begin [0-7]{3,4} ([^\n]+)\n/s';
d311d8	775
A	776	if (preg_match_all($uu_regexp, $part->body, $matches, PREG_SET_ORDER)) {
	777	// update message content-type
	778	$part->ctype_primary = 'multipart';
	779	$part->ctype_secondary = 'mixed';
	780	$part->mimetype = $part->ctype_primary . '/' . $part->ctype_secondary;
14f22f	781	$uu_endstring = "`\nend\n";
d311d8	782
A	783	// add attachments to the structure
	784	foreach ($matches as $pid => $att) {
14f22f	785	$startpos = strpos($part->body, $att[1]) + strlen($att[1]) + 1; // "\n"
GB	786	$endpos = strpos($part->body, $uu_endstring);
	787	$filebody = substr($part->body, $startpos, $endpos-$startpos);
	788
	789	// remove attachments bodies from the message body
	790	$part->body = substr_replace($part->body, "", $startpos, $endpos+strlen($uu_endstring)-$startpos);
	791
d311d8	792	$uupart = new rcube_message_part;
A	793
	794	$uupart->filename = trim($att[1]);
	795	$uupart->encoding = 'stream';
14f22f	796	$uupart->body = convert_uudecode($filebody);
d311d8	797	$uupart->size = strlen($uupart->body);
A	798	$uupart->mime_id = 'uu.' . $part->mime_id . '.' . $pid;
	799
bbd636	800	$ctype = rcube_mime::file_content_type($uupart->body, $uupart->filename, 'application/octet-stream', true);
d311d8	801	$uupart->mimetype = $ctype;
A	802	list($uupart->ctype_primary, $uupart->ctype_secondary) = explode('/', $ctype);
	803
	804	$parts[] = $uupart;
	805	unset($matches[$pid]);
	806	}
14f22f	807
GB	808	// remove attachments bodies from the message body
	809	$part->body = preg_replace($uu_regexp, '', $part->body);
d311d8	810	}
f19d86	811
d311d8	812	return $parts;
A	813	}
b91f04	814
T	815
	816	/**
	817	* Deprecated methods (to be removed)
	818	*/
	819
	820	public static function unfold_flowed($text)
	821	{
	822	return rcube_mime::unfold_flowed($text);
	823	}
	824
	825	public static function format_flowed($text, $length = 72)
	826	{
	827	return rcube_mime::format_flowed($text, $length);
	828	}
	829
8fa58e	830	}