githubFork/roundcubemail.git

- Fix: don't call FETCH when THREADS returns empty result

alecpl

2010-06-04 f22b5439f2e783f47f61042bebb6cc53672568fd

commit \| author \| age
59c216	1	<?php
A	2
	3	/*
	4	+-----------------------------------------------------------------------+
	5	\| program/include/rcube_imap_generic.php \|
	6	\| \|
	7	\| This file is part of the RoundCube Webmail client \|
	8	\| Copyright (C) 2005-2010, RoundCube Dev. - Switzerland \|
	9	\| Licensed under the GNU GPL \|
	10	\| \|
	11	\| PURPOSE: \|
	12	\| Provide alternative IMAP library that doesn't rely on the standard \|
	13	\| C-Client based version. This allows to function regardless \|
	14	\| of whether or not the PHP build it's running on has IMAP \|
	15	\| functionality built-in. \|
	16	\| \|
	17	\| Based on Iloha IMAP Library. See http://ilohamail.org/ for details \|
	18	\| \|
	19	+-----------------------------------------------------------------------+
	20	\| Author: Aleksander Machniak <alec@alec.pl> \|
	21	\| Author: Ryo Chijiiwa <Ryo@IlohaMail.org> \|
	22	+-----------------------------------------------------------------------+
	23
	24	$Id$
	25
	26	*/
	27
	28
d062db	29	/**
T	30	* Struct representing an e-mail message header
	31	*
	32	* @package Mail
1d5165	33	* @author Aleksander Machniak <alec@alec.pl>
d062db	34	*/
59c216	35	class rcube_mail_header
A	36	{
	37	public $id;
	38	public $uid;
	39	public $subject;
	40	public $from;
	41	public $to;
	42	public $cc;
	43	public $replyto;
	44	public $in_reply_to;
	45	public $date;
	46	public $messageID;
	47	public $size;
	48	public $encoding;
	49	public $charset;
	50	public $ctype;
	51	public $flags;
	52	public $timestamp;
	53	public $f;
	54	public $body_structure;
	55	public $internaldate;
	56	public $references;
	57	public $priority;
	58	public $mdn_to;
	59	public $mdn_sent = false;
	60	public $is_draft = false;
	61	public $seen = false;
	62	public $deleted = false;
	63	public $recent = false;
	64	public $answered = false;
	65	public $forwarded = false;
	66	public $junk = false;
	67	public $flagged = false;
	68	public $has_children = false;
	69	public $depth = 0;
	70	public $unread_children = 0;
	71	public $others = array();
	72	}
	73
182093	74	// For backward compatibility with cached messages (#1486602)
A	75	class iilBasicHeader extends rcube_mail_header
	76	{
	77	}
59c216	78
d062db	79	/**
T	80	* PHP based wrapper class to connect to an IMAP server
	81	*
	82	* @package Mail
1d5165	83	* @author Aleksander Machniak <alec@alec.pl>
d062db	84	*/
59c216	85	class rcube_imap_generic
A	86	{
	87	public $error;
	88	public $errornum;
	89	public $message;
	90	public $rootdir;
	91	public $delimiter;
	92	public $permanentflags = array();
	93	public $flags = array(
	94	'SEEN' => '\\Seen',
	95	'DELETED' => '\\Deleted',
	96	'RECENT' => '\\Recent',
	97	'ANSWERED' => '\\Answered',
	98	'DRAFT' => '\\Draft',
	99	'FLAGGED' => '\\Flagged',
	100	'FORWARDED' => '$Forwarded',
	101	'MDNSENT' => '$MDNSent',
	102	'' => '\\',
	103	);
	104
	105	private $exists;
	106	private $recent;
	107	private $selected;
	108	private $fp;
	109	private $host;
	110	private $logged = false;
	111	private $capability = array();
	112	private $capability_readed = false;
	113	private $prefs;
	114
	115	/**
	116	* Object constructor
	117	*/
	118	function __construct()
	119	{
	120	}
1d5165	121
59c216	122	private function putLine($string, $endln=true)
A	123	{
	124	if (!$this->fp)
	125	return false;
	126
	127	if (!empty($this->prefs['debug_mode'])) {
	128	write_log('imap', 'C: '. rtrim($string));
	129	}
1d5165	130
59c216	131	return fputs($this->fp, $string . ($endln ? "\r\n" : ''));
A	132	}
	133
	134	// $this->putLine replacement with Command Continuation Requests (RFC3501 7.5) support
	135	private function putLineC($string, $endln=true)
	136	{
	137	if (!$this->fp)
	138	return NULL;
	139
	140	if ($endln)
	141	$string .= "\r\n";
	142
	143	$res = 0;
	144	if ($parts = preg_split('/(\{[0-9]+\}\r\n)/m', $string, -1, PREG_SPLIT_DELIM_CAPTURE)) {
	145	for ($i=0, $cnt=count($parts); $i<$cnt; $i++) {
	146	if (preg_match('/^\{[0-9]+\}\r\n$/', $parts[$i+1])) {
	147	$bytes = $this->putLine($parts[$i].$parts[$i+1], false);
	148	if ($bytes === false)
	149	return false;
	150	$res += $bytes;
	151	$line = $this->readLine(1000);
	152	// handle error in command
	153	if ($line[0] != '+')
	154	return false;
	155	$i++;
	156	}
	157	else {
	158	$bytes = $this->putLine($parts[$i], false);
	159	if ($bytes === false)
	160	return false;
	161	$res += $bytes;
	162	}
	163	}
	164	}
	165
	166	return $res;
	167	}
	168
	169	private function readLine($size=1024)
	170	{
	171	$line = '';
	172
	173	if (!$this->fp) {
	174	return NULL;
	175	}
1d5165	176
59c216	177	if (!$size) {
A	178	$size = 1024;
	179	}
1d5165	180
59c216	181	do {
A	182	if (feof($this->fp)) {
	183	return $line ? $line : NULL;
	184	}
1d5165	185
59c216	186	$buffer = fgets($this->fp, $size);
A	187
	188	if ($buffer === false) {
3978cb	189	@fclose($this->fp);
A	190	$this->fp = null;
59c216	191	break;
A	192	}
	193	if (!empty($this->prefs['debug_mode'])) {
	194	write_log('imap', 'S: '. chop($buffer));
	195	}
	196	$line .= $buffer;
	197	} while ($buffer[strlen($buffer)-1] != "\n");
	198
	199	return $line;
	200	}
	201
	202	private function multLine($line, $escape=false)
	203	{
	204	$line = chop($line);
	205	if (preg_match('/\{[0-9]+\}$/', $line)) {
	206	$out = '';
1d5165	207
59c216	208	preg_match_all('/(.*)\{([0-9]+)\}$/', $line, $a);
A	209	$bytes = $a[2][0];
	210	while (strlen($out) < $bytes) {
1d5165	211	$line = $this->readBytes($bytes);
59c216	212	if ($line === NULL)
A	213	break;
	214	$out .= $line;
	215	}
	216
	217	$line = $a[1][0] . '"' . ($escape ? $this->Escape($out) : $out) . '"';
	218	}
1d5165	219
59c216	220	return $line;
A	221	}
	222
	223	private function readBytes($bytes)
	224	{
	225	$data = '';
	226	$len = 0;
	227	while ($len < $bytes && !feof($this->fp))
	228	{
	229	$d = fread($this->fp, $bytes-$len);
	230	if (!empty($this->prefs['debug_mode'])) {
	231	write_log('imap', 'S: '. $d);
	232	}
	233	$data .= $d;
	234	$data_len = strlen($data);
	235	if ($len == $data_len) {
	236	break; // nothing was read -> exit to avoid apache lockups
	237	}
	238	$len = $data_len;
	239	}
1d5165	240
59c216	241	return $data;
A	242	}
	243
	244	// don't use it in loops, until you exactly know what you're doing
6a86d2	245	private function readReply(&$untagged=null)
59c216	246	{
A	247	do {
	248	$line = trim($this->readLine(1024));
1d5165	249	// store untagged response lines
A	250	if ($line[0] == '*')
	251	$untagged[] = $line;
59c216	252	} while ($line[0] == '*');
1d5165	253
A	254	if ($untagged)
	255	$untagged = join("\n", $untagged);
59c216	256
A	257	return $line;
	258	}
	259
	260	private function parseResult($string)
	261	{
	262	$a = explode(' ', trim($string));
	263	if (count($a) >= 2) {
	264	$res = strtoupper($a[1]);
	265	if ($res == 'OK') {
	266	return 0;
	267	} else if ($res == 'NO') {
	268	return -1;
	269	} else if ($res == 'BAD') {
	270	return -2;
	271	} else if ($res == 'BYE') {
3978cb	272	@fclose($this->fp);
59c216	273	$this->fp = null;
A	274	return -3;
	275	}
	276	}
	277	return -4;
	278	}
	279
	280	// check if $string starts with $match (or * BYE/BAD)
	281	private function startsWith($string, $match, $error=false, $nonempty=false)
	282	{
	283	$len = strlen($match);
	284	if ($len == 0) {
	285	return false;
	286	}
	287	if (!$this->fp) {
	288	return true;
	289	}
	290	if (strncmp($string, $match, $len) == 0) {
	291	return true;
	292	}
	293	if ($error && preg_match('/^\* (BYE\|BAD) /i', $string, $m)) {
	294	if (strtoupper($m[1]) == 'BYE') {
3978cb	295	@fclose($this->fp);
59c216	296	$this->fp = null;
A	297	}
	298	return true;
	299	}
	300	if ($nonempty && !strlen($string)) {
	301	return true;
	302	}
	303	return false;
	304	}
	305
	306	private function startsWithI($string, $match, $error=false, $nonempty=false)
	307	{
	308	$len = strlen($match);
	309	if ($len == 0) {
	310	return false;
	311	}
	312	if (!$this->fp) {
	313	return true;
	314	}
	315	if (strncasecmp($string, $match, $len) == 0) {
	316	return true;
	317	}
	318	if ($error && preg_match('/^\* (BYE\|BAD) /i', $string, $m)) {
	319	if (strtoupper($m[1]) == 'BYE') {
3978cb	320	@fclose($this->fp);
59c216	321	$this->fp = null;
A	322	}
	323	return true;
	324	}
	325	if ($nonempty && !strlen($string)) {
	326	return true;
	327	}
	328	return false;
	329	}
	330
	331	function getCapability($name)
	332	{
	333	if (in_array($name, $this->capability)) {
	334	return true;
	335	}
	336	else if ($this->capability_readed) {
	337	return false;
	338	}
	339
1d5165	340	// get capabilities (only once) because initial
59c216	341	// optional CAPABILITY response may differ
A	342	$this->capability = array();
	343
	344	if (!$this->putLine("cp01 CAPABILITY")) {
	345	return false;
	346	}
	347	do {
	348	$line = trim($this->readLine(1024));
	349	$a = explode(' ', $line);
	350	if ($line[0] == '*') {
	351	while (list($k, $w) = each($a)) {
	352	if ($w != '*' && $w != 'CAPABILITY')
	353	$this->capability[] = strtoupper($w);
	354	}
	355	}
	356	} while ($a[0] != 'cp01');
1d5165	357
59c216	358	$this->capability_readed = true;
A	359
	360	if (in_array($name, $this->capability)) {
	361	return true;
	362	}
	363
	364	return false;
	365	}
	366
	367	function clearCapability()
	368	{
	369	$this->capability = array();
	370	$this->capability_readed = false;
	371	}
	372
	373	function authenticate($user, $pass, $encChallenge)
	374	{
	375	$ipad = '';
	376	$opad = '';
1d5165	377
59c216	378	// initialize ipad, opad
A	379	for ($i=0; $i<64; $i++) {
	380	$ipad .= chr(0x36);
	381	$opad .= chr(0x5C);
	382	}
	383
	384	// pad $pass so it's 64 bytes
	385	$padLen = 64 - strlen($pass);
	386	for ($i=0; $i<$padLen; $i++) {
	387	$pass .= chr(0);
	388	}
1d5165	389
59c216	390	// generate hash
6f31b3	391	$hash = md5($this->_xor($pass,$opad) . pack("H*", md5($this->_xor($pass, $ipad) . base64_decode($encChallenge))));
1d5165	392
59c216	393	// generate reply
A	394	$reply = base64_encode($user . ' ' . $hash);
1d5165	395
59c216	396	// send result, get reply
A	397	$this->putLine($reply);
	398	$line = $this->readLine(1024);
1d5165	399
59c216	400	// process result
A	401	$result = $this->parseResult($line);
	402	if ($result == 0) {
63bff1	403	$this->errornum = 0;
59c216	404	return $this->fp;
A	405	}
	406
63bff1	407	$this->error = "Authentication for $user failed (AUTH): $line";
A	408	$this->errornum = $result;
59c216	409
A	410	return $result;
	411	}
	412
	413	function login($user, $password)
	414	{
	415	$this->putLine('a001 LOGIN "'.$this->escape($user).'" "'.$this->escape($password).'"');
	416
1d5165	417	$line = $this->readReply($untagged);
A	418
	419	// re-set capabilities list if untagged CAPABILITY response provided
	420	if (preg_match('/\* CAPABILITY (.+)/i', $untagged, $matches)) {
	421	$this->capability = explode(' ', strtoupper($matches[1]));
	422	}
59c216	423
A	424	// process result
	425	$result = $this->parseResult($line);
	426
	427	if ($result == 0) {
63bff1	428	$this->errornum = 0;
59c216	429	return $this->fp;
A	430	}
	431
3978cb	432	@fclose($this->fp);
59c216	433	$this->fp = false;
1d5165	434
63bff1	435	$this->error = "Authentication for $user failed (LOGIN): $line";
A	436	$this->errornum = $result;
59c216	437
A	438	return $result;
	439	}
	440
c85424	441	function getNamespace()
59c216	442	{
A	443	if (isset($this->prefs['rootdir']) && is_string($this->prefs['rootdir'])) {
	444	$this->rootdir = $this->prefs['rootdir'];
	445	return true;
	446	}
1d5165	447
59c216	448	if (!$this->getCapability('NAMESPACE')) {
A	449	return false;
	450	}
1d5165	451
59c216	452	if (!$this->putLine("ns1 NAMESPACE")) {
A	453	return false;
	454	}
	455	do {
	456	$line = $this->readLine(1024);
	457	if ($this->startsWith($line, '* NAMESPACE')) {
	458	$i = 0;
	459	$line = $this->unEscape($line);
	460	$data = $this->parseNamespace(substr($line,11), $i, 0, 0);
	461	}
	462	} while (!$this->startsWith($line, 'ns1', true, true));
	463
	464	if (!is_array($data)) {
	465	return false;
	466	}
	467
	468	$user_space_data = $data[0];
	469	if (!is_array($user_space_data)) {
	470	return false;
	471	}
	472
	473	$first_userspace = $user_space_data[0];
	474	if (count($first_userspace)!=2) {
	475	return false;
	476	}
1d5165	477
59c216	478	$this->rootdir = $first_userspace[0];
A	479	$this->delimiter = $first_userspace[1];
	480	$this->prefs['rootdir'] = substr($this->rootdir, 0, -1);
	481	$this->prefs['delimiter'] = $this->delimiter;
1d5165	482
59c216	483	return true;
A	484	}
	485
	486
	487	/**
	488	* Gets the delimiter, for example:
	489	* INBOX.foo -> .
	490	* INBOX/foo -> /
	491	* INBOX\foo -> \
1d5165	492	*
A	493	* @return mixed A delimiter (string), or false.
59c216	494	* @see connect()
A	495	*/
	496	function getHierarchyDelimiter()
	497	{
	498	if ($this->delimiter) {
	499	return $this->delimiter;
	500	}
	501	if (!empty($this->prefs['delimiter'])) {
	502	return ($this->delimiter = $this->prefs['delimiter']);
	503	}
	504
	505	$delimiter = false;
	506
	507	// try (LIST "" ""), should return delimiter (RFC2060 Sec 6.3.8)
	508	if (!$this->putLine('ghd LIST "" ""')) {
	509	return false;
	510	}
1d5165	511
59c216	512	do {
A	513	$line = $this->readLine(500);
	514	if ($line[0] == '*') {
	515	$line = rtrim($line);
	516	$a = rcube_explode_quoted_string(' ', $this->unEscape($line));
	517	if ($a[0] == '*') {
	518	$delimiter = str_replace('"', '', $a[count($a)-2]);
	519	}
	520	}
	521	} while (!$this->startsWith($line, 'ghd', true, true));
	522
	523	if (strlen($delimiter)>0) {
	524	return $delimiter;
	525	}
	526
	527	// if that fails, try namespace extension
	528	// try to fetch namespace data
	529	if (!$this->putLine("ns1 NAMESPACE")) {
	530	return false;
	531	}
	532
	533	do {
	534	$line = $this->readLine(1024);
	535	if ($this->startsWith($line, '* NAMESPACE')) {
	536	$i = 0;
	537	$line = $this->unEscape($line);
	538	$data = $this->parseNamespace(substr($line,11), $i, 0, 0);
	539	}
	540	} while (!$this->startsWith($line, 'ns1', true, true));
	541
	542	if (!is_array($data)) {
	543	return false;
	544	}
1d5165	545
59c216	546	// extract user space data (opposed to global/shared space)
A	547	$user_space_data = $data[0];
	548	if (!is_array($user_space_data)) {
	549	return false;
	550	}
	551
	552	// get first element
	553	$first_userspace = $user_space_data[0];
	554	if (!is_array($first_userspace)) {
	555	return false;
	556	}
	557
	558	// extract delimiter
1d5165	559	$delimiter = $first_userspace[1];
59c216	560
A	561	return $delimiter;
	562	}
	563
	564	function connect($host, $user, $password, $options=null)
	565	{
	566	// set options
	567	if (is_array($options)) {
	568	$this->prefs = $options;
	569	}
	570	// set auth method
	571	if (!empty($this->prefs['auth_method'])) {
	572	$auth_method = strtoupper($this->prefs['auth_method']);
	573	} else {
	574	$auth_method = 'CHECK';
	575	}
	576
	577	$message = "INITIAL: $auth_method\n";
	578
	579	$result = false;
1d5165	580
59c216	581	// initialize connection
A	582	$this->error = '';
	583	$this->errornum = 0;
	584	$this->selected = '';
	585	$this->user = $user;
	586	$this->host = $host;
	587	$this->logged = false;
	588
	589	// check input
	590	if (empty($host)) {
	591	$this->error = "Empty host";
94a6c6	592	$this->errornum = -2;
59c216	593	return false;
A	594	}
	595	if (empty($user)) {
	596	$this->error = "Empty user";
	597	$this->errornum = -1;
	598	return false;
	599	}
	600	if (empty($password)) {
	601	$this->error = "Empty password";
	602	$this->errornum = -1;
	603	return false;
	604	}
	605
	606	if (!$this->prefs['port']) {
	607	$this->prefs['port'] = 143;
	608	}
	609	// check for SSL
	610	if ($this->prefs['ssl_mode'] && $this->prefs['ssl_mode'] != 'tls') {
	611	$host = $this->prefs['ssl_mode'] . '://' . $host;
	612	}
	613
f07d23	614	// Connect
A	615	if ($this->prefs['timeout'] > 0)
	616	$this->fp = @fsockopen($host, $this->prefs['port'], $errno, $errstr, $this->prefs['timeout']);
	617	else
	618	$this->fp = @fsockopen($host, $this->prefs['port'], $errno, $errstr);
	619
59c216	620	if (!$this->fp) {
A	621	$this->error = sprintf("Could not connect to %s:%d: %s", $host, $this->prefs['port'], $errstr);
	622	$this->errornum = -2;
	623	return false;
	624	}
	625
f07d23	626	if ($this->prefs['timeout'] > 0)
A	627	stream_set_timeout($this->fp, $this->prefs['timeout']);
	628
59c216	629	$line = trim(fgets($this->fp, 8192));
A	630
	631	if ($this->prefs['debug_mode'] && $line) {
	632	write_log('imap', 'S: '. $line);
	633	}
	634
	635	// Connected to wrong port or connection error?
	636	if (!preg_match('/^\* (OK\|PREAUTH)/i', $line)) {
	637	if ($line)
	638	$this->error = sprintf("Wrong startup greeting (%s:%d): %s", $host, $this->prefs['port'], $line);
	639	else
	640	$this->error = sprintf("Empty startup greeting (%s:%d)", $host, $this->prefs['port']);
	641	$this->errornum = -2;
	642	return false;
	643	}
	644
	645	// RFC3501 [7.1] optional CAPABILITY response
	646	if (preg_match('/\[CAPABILITY ([^]]+)\]/i', $line, $matches)) {
	647	$this->capability = explode(' ', strtoupper($matches[1]));
	648	}
	649
	650	$this->message .= $line;
	651
	652	// TLS connection
	653	if ($this->prefs['ssl_mode'] == 'tls' && $this->getCapability('STARTTLS')) {
	654	if (version_compare(PHP_VERSION, '5.1.0', '>=')) {
	655	$this->putLine("tls0 STARTTLS");
	656
	657	$line = $this->readLine(4096);
	658	if (!$this->startsWith($line, "tls0 OK")) {
	659	$this->error = "Server responded to STARTTLS with: $line";
	660	$this->errornum = -2;
	661	return false;
	662	}
	663
	664	if (!stream_socket_enable_crypto($this->fp, true, STREAM_CRYPTO_METHOD_TLS_CLIENT)) {
	665	$this->error = "Unable to negotiate TLS";
	666	$this->errornum = -2;
	667	return false;
	668	}
1d5165	669
59c216	670	// Now we're authenticated, capabilities need to be reread
A	671	$this->clearCapability();
	672	}
	673	}
	674
	675	$orig_method = $auth_method;
	676
	677	if ($auth_method == 'CHECK') {
	678	// check for supported auth methods
	679	if ($this->getCapability('AUTH=CRAM-MD5') \|\| $this->getCapability('AUTH=CRAM_MD5')) {
	680	$auth_method = 'AUTH';
	681	}
	682	else {
	683	// default to plain text auth
	684	$auth_method = 'PLAIN';
	685	}
	686	}
	687
	688	if ($auth_method == 'AUTH') {
	689	// do CRAM-MD5 authentication
	690	$this->putLine("a000 AUTHENTICATE CRAM-MD5");
	691	$line = trim($this->readLine(1024));
	692
	693	if ($line[0] == '+') {
	694	// got a challenge string, try CRAM-MD5
	695	$result = $this->authenticate($user, $password, substr($line,2));
1d5165	696
59c216	697	// stop if server sent BYE response
A	698	if ($result == -3) {
	699	return false;
	700	}
	701	}
1d5165	702
59c216	703	if (!is_resource($result) && $orig_method == 'CHECK') {
A	704	$auth_method = 'PLAIN';
	705	}
	706	}
1d5165	707
59c216	708	if ($auth_method == 'PLAIN') {
A	709	// do plain text auth
	710	$result = $this->login($user, $password);
	711	}
	712
	713	if (is_resource($result)) {
	714	if ($this->prefs['force_caps']) {
	715	$this->clearCapability();
	716	}
c85424	717	$this->getNamespace();
59c216	718	$this->logged = true;
A	719	return true;
	720	} else {
	721	return false;
	722	}
	723	}
	724
	725	function connected()
	726	{
	727	return ($this->fp && $this->logged) ? true : false;
	728	}
	729
	730	function close()
	731	{
	732	if ($this->putLine("I LOGOUT")) {
	733	if (!feof($this->fp))
	734	fgets($this->fp, 1024);
	735	}
	736	@fclose($this->fp);
	737	$this->fp = false;
	738	}
	739
	740	function select($mailbox)
	741	{
	742	if (empty($mailbox)) {
	743	return false;
	744	}
	745	if ($this->selected == $mailbox) {
	746	return true;
	747	}
1d5165	748
59c216	749	if ($this->putLine("sel1 SELECT \"".$this->escape($mailbox).'"')) {
A	750	do {
	751	$line = chop($this->readLine(300));
	752	$a = explode(' ', $line);
	753	if (count($a) == 3) {
	754	$token = strtoupper($a[2]);
	755	if ($token == 'EXISTS') {
	756	$this->exists = (int) $a[1];
	757	}
	758	else if ($token == 'RECENT') {
	759	$this->recent = (int) $a[1];
	760	}
	761	}
	762	else if (preg_match('/\[?PERMANENTFLAGS\s+$([^$]+)\)\]/U', $line, $match)) {
	763	$this->permanentflags = explode(' ', $match[1]);
	764	}
	765	} while (!$this->startsWith($line, 'sel1', true, true));
	766
	767	if (strcasecmp($a[1], 'OK') == 0) {
	768	$this->selected = $mailbox;
	769	return true;
	770	}
	771	else {
	772	$this->error = "Couldn't select $mailbox";
	773	}
	774	}
	775
	776	return false;
	777	}
	778
	779	function checkForRecent($mailbox)
	780	{
	781	if (empty($mailbox)) {
	782	$mailbox = 'INBOX';
	783	}
1d5165	784
59c216	785	$this->select($mailbox);
A	786	if ($this->selected == $mailbox) {
	787	return $this->recent;
	788	}
	789
	790	return false;
	791	}
	792
	793	function countMessages($mailbox, $refresh = false)
	794	{
	795	if ($refresh) {
	796	$this->selected = '';
	797	}
1d5165	798
59c216	799	$this->select($mailbox);
A	800	if ($this->selected == $mailbox) {
	801	return $this->exists;
	802	}
	803
	804	return false;
	805	}
	806
	807	function sort($mailbox, $field, $add='', $is_uid=FALSE, $encoding = 'US-ASCII')
	808	{
	809	$field = strtoupper($field);
	810	if ($field == 'INTERNALDATE') {
	811	$field = 'ARRIVAL';
	812	}
1d5165	813
59c216	814	$fields = array('ARRIVAL' => 1,'CC' => 1,'DATE' => 1,
A	815	'FROM' => 1, 'SIZE' => 1, 'SUBJECT' => 1, 'TO' => 1);
	816
	817	if (!$fields[$field]) {
	818	return false;
	819	}
	820
	821	/* Do "SELECT" command */
	822	if (!$this->select($mailbox)) {
	823	return false;
	824	}
1d5165	825
59c216	826	$is_uid = $is_uid ? 'UID ' : '';
1d5165	827
59c216	828	// message IDs
A	829	if (is_array($add))
	830	$add = $this->compressMessageSet(join(',', $add));
	831
	832	$command = "s ".$is_uid."SORT ($field) $encoding ALL";
	833	$line = $data = '';
	834
	835	if (!empty($add))
	836	$command .= ' '.$add;
	837
	838	if (!$this->putLineC($command)) {
	839	return false;
	840	}
	841	do {
	842	$line = chop($this->readLine());
	843	if ($this->startsWith($line, '* SORT')) {
	844	$data .= substr($line, 7);
	845	} else if (preg_match('/^[0-9 ]+$/', $line)) {
	846	$data .= $line;
	847	}
	848	} while (!$this->startsWith($line, 's ', true, true));
1d5165	849
59c216	850	$result_code = $this->parseResult($line);
1d5165	851
59c216	852	if ($result_code != 0) {
A	853	$this->error = "Sort: $line";
	854	return false;
	855	}
1d5165	856
59c216	857	return preg_split('/\s+/', $data, -1, PREG_SPLIT_NO_EMPTY);
A	858	}
	859
	860	function fetchHeaderIndex($mailbox, $message_set, $index_field='', $skip_deleted=true, $uidfetch=false)
	861	{
	862	if (is_array($message_set)) {
	863	if (!($message_set = $this->compressMessageSet(join(',', $message_set))))
	864	return false;
	865	} else {
	866	list($from_idx, $to_idx) = explode(':', $message_set);
	867	if (empty($message_set) \|\|
	868	(isset($to_idx) && $to_idx != '*' && (int)$from_idx > (int)$to_idx)) {
	869	return false;
	870	}
	871	}
1d5165	872
59c216	873	$index_field = empty($index_field) ? 'DATE' : strtoupper($index_field);
1d5165	874
59c216	875	$fields_a['DATE'] = 1;
A	876	$fields_a['INTERNALDATE'] = 4;
	877	$fields_a['ARRIVAL'] = 4;
	878	$fields_a['FROM'] = 1;
	879	$fields_a['REPLY-TO'] = 1;
	880	$fields_a['SENDER'] = 1;
	881	$fields_a['TO'] = 1;
	882	$fields_a['CC'] = 1;
	883	$fields_a['SUBJECT'] = 1;
	884	$fields_a['UID'] = 2;
	885	$fields_a['SIZE'] = 2;
	886	$fields_a['SEEN'] = 3;
	887	$fields_a['RECENT'] = 3;
	888	$fields_a['DELETED'] = 3;
	889
	890	if (!($mode = $fields_a[$index_field])) {
	891	return false;
	892	}
	893
	894	/* Do "SELECT" command */
	895	if (!$this->select($mailbox)) {
	896	return false;
	897	}
1d5165	898
59c216	899	// build FETCH command string
A	900	$key = 'fhi0';
	901	$cmd = $uidfetch ? 'UID FETCH' : 'FETCH';
	902	$deleted = $skip_deleted ? ' FLAGS' : '';
	903
	904	if ($mode == 1 && $index_field == 'DATE')
	905	$request = " $cmd $message_set (INTERNALDATE BODY.PEEK[HEADER.FIELDS (DATE)]$deleted)";
	906	else if ($mode == 1)
	907	$request = " $cmd $message_set (BODY.PEEK[HEADER.FIELDS ($index_field)]$deleted)";
	908	else if ($mode == 2) {
	909	if ($index_field == 'SIZE')
	910	$request = " $cmd $message_set (RFC822.SIZE$deleted)";
	911	else
	912	$request = " $cmd $message_set ($index_field$deleted)";
	913	} else if ($mode == 3)
	914	$request = " $cmd $message_set (FLAGS)";
	915	else // 4
	916	$request = " $cmd $message_set (INTERNALDATE$deleted)";
	917
	918	$request = $key . $request;
	919
	920	if (!$this->putLine($request)) {
	921	return false;
	922	}
	923
	924	$result = array();
	925
	926	do {
	927	$line = chop($this->readLine(200));
	928	$line = $this->multLine($line);
	929
	930	if (preg_match('/^\* ([0-9]+) FETCH/', $line, $m)) {
	931	$id = $m[1];
	932	$flags = NULL;
1d5165	933
59c216	934	if ($skip_deleted && preg_match('/FLAGS $([^)]+)$/', $line, $matches)) {
A	935	$flags = explode(' ', strtoupper($matches[1]));
	936	if (in_array('\\DELETED', $flags)) {
	937	$deleted[$id] = $id;
	938	continue;
	939	}
	940	}
	941
	942	if ($mode == 1 && $index_field == 'DATE') {
	943	if (preg_match('/BODY\[HEADER\.FIELDS $"DATE"$\] (.*)/', $line, $matches)) {
	944	$value = preg_replace(array('/^"*[a-z]+:/i'), '', $matches[1]);
	945	$value = trim($value);
	946	$result[$id] = $this->strToTime($value);
	947	}
	948	// non-existent/empty Date: header, use INTERNALDATE
	949	if (empty($result[$id])) {
	950	if (preg_match('/INTERNALDATE "([^"]+)"/', $line, $matches))
	951	$result[$id] = $this->strToTime($matches[1]);
	952	else
	953	$result[$id] = 0;
	954	}
	955	} else if ($mode == 1) {
	956	if (preg_match('/BODY\[HEADER\.FIELDS $"?(FROM\|REPLY-TO\|SENDER\|TO\|SUBJECT)"?$\] (.*)/', $line, $matches)) {
	957	$value = preg_replace(array('/^"*[a-z]+:/i', '/\s+$/sm'), array('', ''), $matches[2]);
	958	$result[$id] = trim($value);
	959	} else {
	960	$result[$id] = '';
	961	}
	962	} else if ($mode == 2) {
	963	if (preg_match('/\((UID\|RFC822\.SIZE) ([0-9]+)/', $line, $matches)) {
	964	$result[$id] = trim($matches[2]);
	965	} else {
	966	$result[$id] = 0;
	967	}
	968	} else if ($mode == 3) {
	969	if (!$flags && preg_match('/FLAGS $([^)]+)$/', $line, $matches)) {
	970	$flags = explode(' ', $matches[1]);
	971	}
	972	$result[$id] = in_array('\\'.$index_field, $flags) ? 1 : 0;
	973	} else if ($mode == 4) {
	974	if (preg_match('/INTERNALDATE "([^"]+)"/', $line, $matches)) {
	975	$result[$id] = $this->strToTime($matches[1]);
	976	} else {
	977	$result[$id] = 0;
	978	}
	979	}
	980	}
	981	} while (!$this->startsWith($line, $key, true, true));
	982
1d5165	983	return $result;
59c216	984	}
A	985
	986	private function compressMessageSet($message_set)
	987	{
1d5165	988	// given a comma delimited list of independent mid's,
59c216	989	// compresses by grouping sequences together
1d5165	990
59c216	991	// if less than 255 bytes long, let's not bother
A	992	if (strlen($message_set)<255) {
	993	return $message_set;
	994	}
1d5165	995
59c216	996	// see if it's already been compress
A	997	if (strpos($message_set, ':') !== false) {
	998	return $message_set;
	999	}
1d5165	1000
59c216	1001	// separate, then sort
A	1002	$ids = explode(',', $message_set);
	1003	sort($ids);
1d5165	1004
59c216	1005	$result = array();
A	1006	$start = $prev = $ids[0];
	1007
	1008	foreach ($ids as $id) {
	1009	$incr = $id - $prev;
	1010	if ($incr > 1) { //found a gap
	1011	if ($start == $prev) {
	1012	$result[] = $prev; //push single id
	1013	} else {
	1014	$result[] = $start . ':' . $prev; //push sequence as start_id:end_id
	1015	}
	1016	$start = $id; //start of new sequence
	1017	}
	1018	$prev = $id;
	1019	}
	1020
	1021	// handle the last sequence/id
	1022	if ($start==$prev) {
	1023	$result[] = $prev;
	1024	} else {
	1025	$result[] = $start.':'.$prev;
	1026	}
1d5165	1027
59c216	1028	// return as comma separated string
A	1029	return implode(',', $result);
	1030	}
	1031
	1032	function UID2ID($folder, $uid)
	1033	{
	1034	if ($uid > 0) {
	1035	$id_a = $this->search($folder, "UID $uid");
	1036	if (is_array($id_a) && count($id_a) == 1) {
	1037	return $id_a[0];
	1038	}
	1039	}
	1040	return false;
	1041	}
	1042
	1043	function ID2UID($folder, $id)
	1044	{
	1045	if (empty($id)) {
	1046	return -1;
	1047	}
	1048
	1049	if (!$this->select($folder)) {
	1050	return -1;
	1051	}
	1052
	1053	$result = -1;
	1054	if ($this->putLine("fuid FETCH $id (UID)")) {
	1055	do {
	1056	$line = chop($this->readLine(1024));
	1057	if (preg_match("/^\* $id FETCH $UID (.*)$/i", $line, $r)) {
	1058	$result = $r[1];
	1059	}
	1060	} while (!$this->startsWith($line, 'fuid', true, true));
	1061	}
	1062
	1063	return $result;
	1064	}
	1065
	1066	function fetchUIDs($mailbox, $message_set=null)
	1067	{
	1068	if (is_array($message_set))
	1069	$message_set = join(',', $message_set);
	1070	else if (empty($message_set))
	1071	$message_set = '1:*';
1d5165	1072
59c216	1073	return $this->fetchHeaderIndex($mailbox, $message_set, 'UID', false);
A	1074	}
	1075
	1076	function fetchHeaders($mailbox, $message_set, $uidfetch=false, $bodystr=false, $add='')
	1077	{
	1078	$result = array();
1d5165	1079
59c216	1080	if (!$this->select($mailbox)) {
A	1081	return false;
	1082	}
	1083
	1084	if (is_array($message_set))
	1085	$message_set = join(',', $message_set);
	1086
	1087	$message_set = $this->compressMessageSet($message_set);
	1088
	1089	if ($add)
	1090	$add = ' '.strtoupper(trim($add));
	1091
	1092	/* FETCH uid, size, flags and headers */
	1093	$key = 'FH12';
	1094	$request = $key . ($uidfetch ? ' UID' : '') . " FETCH $message_set ";
	1095	$request .= "(UID RFC822.SIZE FLAGS INTERNALDATE ";
	1096	if ($bodystr)
	1097	$request .= "BODYSTRUCTURE ";
	1098	$request .= "BODY.PEEK[HEADER.FIELDS ";
	1099	$request .= "(DATE FROM TO SUBJECT REPLY-TO IN-REPLY-TO CC BCC ";
	1100	$request .= "CONTENT-TRANSFER-ENCODING CONTENT-TYPE MESSAGE-ID ";
	1101	$request .= "REFERENCES DISPOSITION-NOTIFICATION-TO X-PRIORITY ";
	1102	$request .= "X-DRAFT-INFO".$add.")])";
	1103
	1104	if (!$this->putLine($request)) {
	1105	return false;
	1106	}
	1107	do {
	1108	$line = $this->readLine(1024);
	1109	$line = $this->multLine($line);
1d5165	1110
59c216	1111	if (!$line)
A	1112	break;
1d5165	1113
59c216	1114	$a = explode(' ', $line);
A	1115
	1116	if (($line[0] == '*') && ($a[2] == 'FETCH')) {
	1117	$id = $a[1];
1d5165	1118
59c216	1119	$result[$id] = new rcube_mail_header;
A	1120	$result[$id]->id = $id;
	1121	$result[$id]->subject = '';
	1122	$result[$id]->messageID = 'mid:' . $id;
	1123
	1124	$lines = array();
	1125	$ln = 0;
	1126
	1127	// Sample reply line:
	1128	// * 321 FETCH (UID 2417 RFC822.SIZE 2730 FLAGS (\Seen)
	1129	// INTERNALDATE "16-Nov-2008 21:08:46 +0100" BODYSTRUCTURE (...)
	1130	// BODY[HEADER.FIELDS ...
	1131
	1132	if (preg_match('/^\* [0-9]+ FETCH \((.*) BODY/s', $line, $matches)) {
	1133	$str = $matches[1];
	1134
	1135	// swap parents with quotes, then explode
	1136	$str = preg_replace('/[()]/', '"', $str);
	1137	$a = rcube_explode_quoted_string(' ', $str);
	1138
	1139	// did we get the right number of replies?
	1140	$parts_count = count($a);
	1141	if ($parts_count>=6) {
	1142	for ($i=0; $i<$parts_count; $i=$i+2) {
	1143	if ($a[$i] == 'UID')
	1144	$result[$id]->uid = $a[$i+1];
	1145	else if ($a[$i] == 'RFC822.SIZE')
	1146	$result[$id]->size = $a[$i+1];
	1147	else if ($a[$i] == 'INTERNALDATE')
	1148	$time_str = $a[$i+1];
	1149	else if ($a[$i] == 'FLAGS')
	1150	$flags_str = $a[$i+1];
	1151	}
	1152
	1153	$time_str = str_replace('"', '', $time_str);
1d5165	1154
59c216	1155	// if time is gmt...
A	1156	$time_str = str_replace('GMT','+0000',$time_str);
1d5165	1157
59c216	1158	$result[$id]->internaldate = $time_str;
A	1159	$result[$id]->timestamp = $this->StrToTime($time_str);
	1160	$result[$id]->date = $time_str;
	1161	}
	1162
1d5165	1163	// BODYSTRUCTURE
59c216	1164	if($bodystr) {
A	1165	while (!preg_match('/ BODYSTRUCTURE (.*) BODY\[HEADER.FIELDS/s', $line, $m)) {
	1166	$line2 = $this->readLine(1024);
	1167	$line .= $this->multLine($line2, true);
	1168	}
	1169	$result[$id]->body_structure = $m[1];
	1170	}
	1171
	1172	// the rest of the result
	1173	preg_match('/ BODY\[HEADER.FIELDS $.?$\]\s(.*)$/s', $line, $m);
	1174	$reslines = explode("\n", trim($m[1], '"'));
	1175	// re-parse (see below)
	1176	foreach ($reslines as $resln) {
	1177	if (ord($resln[0])<=32) {
	1178	$lines[$ln] .= (empty($lines[$ln])?'':"\n").trim($resln);
	1179	} else {
	1180	$lines[++$ln] = trim($resln);
	1181	}
	1182	}
	1183	}
	1184
	1185	// Start parsing headers. The problem is, some header "lines" take up multiple lines.
	1186	// So, we'll read ahead, and if the one we're reading now is a valid header, we'll
	1187	// process the previous line. Otherwise, we'll keep adding the strings until we come
	1188	// to the next valid header line.
1d5165	1189
59c216	1190	do {
A	1191	$line = chop($this->readLine(300), "\r\n");
	1192
	1193	// The preg_match below works around communigate imap, which outputs " UID <number>)".
	1194	// Without this, the while statement continues on and gets the "FH0 OK completed" message.
1d5165	1195	// If this loop gets the ending message, then the outer loop does not receive it from radline on line 1249.
59c216	1196	// This in causes the if statement on line 1278 to never be true, which causes the headers to end up missing
A	1197	// If the if statement was changed to pick up the fh0 from this loop, then it causes the outer loop to spin
	1198	// An alternative might be:
	1199	// if (!preg_match("/:/",$line) && preg_match("/\)$/",$line)) break;
	1200	// however, unsure how well this would work with all imap clients.
	1201	if (preg_match("/^\s*UID [0-9]+\)$/", $line)) {
	1202	break;
	1203	}
	1204
	1205	// handle FLAGS reply after headers (AOL, Zimbra?)
	1206	if (preg_match('/\s+FLAGS $(.*)$\)$/', $line, $matches)) {
	1207	$flags_str = $matches[1];
	1208	break;
	1209	}
	1210
	1211	if (ord($line[0])<=32) {
	1212	$lines[$ln] .= (empty($lines[$ln])?'':"\n").trim($line);
	1213	} else {
	1214	$lines[++$ln] = trim($line);
	1215	}
	1216	// patch from "Maksim Rubis" <siburny@hotmail.com>
	1217	} while ($line[0] != ')' && !$this->startsWith($line, $key, true));
	1218
1d5165	1219	if (strncmp($line, $key, strlen($key))) {
59c216	1220	// process header, fill rcube_mail_header obj.
A	1221	// initialize
	1222	if (is_array($headers)) {
	1223	reset($headers);
	1224	while (list($k, $bar) = each($headers)) {
	1225	$headers[$k] = '';
	1226	}
	1227	}
	1228
	1229	// create array with header field:data
	1230	while ( list($lines_key, $str) = each($lines) ) {
	1231	list($field, $string) = $this->splitHeaderLine($str);
1d5165	1232
59c216	1233	$field = strtolower($field);
A	1234	$string = preg_replace('/\n\s*/', ' ', $string);
1d5165	1235
59c216	1236	switch ($field) {
A	1237	case 'date';
	1238	$result[$id]->date = $string;
	1239	$result[$id]->timestamp = $this->strToTime($string);
	1240	break;
	1241	case 'from':
	1242	$result[$id]->from = $string;
	1243	break;
	1244	case 'to':
	1245	$result[$id]->to = preg_replace('/undisclosed-recipients:[;,]*/', '', $string);
	1246	break;
	1247	case 'subject':
	1248	$result[$id]->subject = $string;
	1249	break;
	1250	case 'reply-to':
	1251	$result[$id]->replyto = $string;
	1252	break;
	1253	case 'cc':
	1254	$result[$id]->cc = $string;
	1255	break;
	1256	case 'bcc':
	1257	$result[$id]->bcc = $string;
	1258	break;
	1259	case 'content-transfer-encoding':
	1260	$result[$id]->encoding = $string;
	1261	break;
	1262	case 'content-type':
	1263	$ctype_parts = preg_split('/[; ]/', $string);
	1264	$result[$id]->ctype = array_shift($ctype_parts);
	1265	if (preg_match('/charset\s=\s"?([a-z0-9\-\.\_]+)"?/i', $string, $regs)) {
	1266	$result[$id]->charset = $regs[1];
	1267	}
	1268	break;
	1269	case 'in-reply-to':
	1270	$result[$id]->in_reply_to = preg_replace('/[\n<>]/', '', $string);
	1271	break;
	1272	case 'references':
	1273	$result[$id]->references = $string;
	1274	break;
	1275	case 'return-receipt-to':
	1276	case 'disposition-notification-to':
	1277	case 'x-confirm-reading-to':
	1278	$result[$id]->mdn_to = $string;
	1279	break;
	1280	case 'message-id':
	1281	$result[$id]->messageID = $string;
	1282	break;
	1283	case 'x-priority':
	1284	if (preg_match('/^(\d+)/', $string, $matches))
	1285	$result[$id]->priority = intval($matches[1]);
	1286	break;
	1287	default:
	1288	if (strlen($field) > 2)
	1289	$result[$id]->others[$field] = $string;
	1290	break;
	1291	} // end switch ()
	1292	} // end while ()
	1293	} else {
	1294	$a = explode(' ', $line);
	1295	}
	1296
	1297	// process flags
	1298	if (!empty($flags_str)) {
	1299	$flags_str = preg_replace('/[\\\"]/', '', $flags_str);
	1300	$flags_a = explode(' ', $flags_str);
1d5165	1301
59c216	1302	if (is_array($flags_a)) {
A	1303	// reset($flags_a);
	1304	foreach($flags_a as $flag) {
	1305	$flag = strtoupper($flag);
	1306	if ($flag == 'SEEN') {
	1307	$result[$id]->seen = true;
	1308	} else if ($flag == 'DELETED') {
	1309	$result[$id]->deleted = true;
	1310	} else if ($flag == 'RECENT') {
	1311	$result[$id]->recent = true;
	1312	} else if ($flag == 'ANSWERED') {
	1313	$result[$id]->answered = true;
	1314	} else if ($flag == '$FORWARDED') {
	1315	$result[$id]->forwarded = true;
	1316	} else if ($flag == 'DRAFT') {
	1317	$result[$id]->is_draft = true;
	1318	} else if ($flag == '$MDNSENT') {
	1319	$result[$id]->mdn_sent = true;
	1320	} else if ($flag == 'FLAGGED') {
	1321	$result[$id]->flagged = true;
	1322	}
	1323	}
	1324	$result[$id]->flags = $flags_a;
	1325	}
	1326	}
	1327	}
	1328	} while (!$this->startsWith($line, $key, true));
	1329
	1330	return $result;
	1331	}
	1332
	1333	function fetchHeader($mailbox, $id, $uidfetch=false, $bodystr=false, $add='')
	1334	{
	1335	$a = $this->fetchHeaders($mailbox, $id, $uidfetch, $bodystr, $add);
	1336	if (is_array($a)) {
	1337	return array_shift($a);
	1338	}
	1339	return false;
	1340	}
	1341
	1342	function sortHeaders($a, $field, $flag)
	1343	{
	1344	if (empty($field)) {
	1345	$field = 'uid';
	1346	}
	1347	else {
	1348	$field = strtolower($field);
	1349	}
	1350
	1351	if ($field == 'date' \|\| $field == 'internaldate') {
	1352	$field = 'timestamp';
	1353	}
	1354	if (empty($flag)) {
	1355	$flag = 'ASC';
	1356	} else {
	1357	$flag = strtoupper($flag);
	1358	}
	1359
	1360	$stripArr = ($field=='subject') ? array('Re: ','Fwd: ','Fw: ','"') : array('"');
	1361
	1362	$c = count($a);
	1363	if ($c > 0) {
1d5165	1364
59c216	1365	// Strategy:
A	1366	// First, we'll create an "index" array.
1d5165	1367	// Then, we'll use sort() on that array,
59c216	1368	// and use that to sort the main array.
1d5165	1369
59c216	1370	// create "index" array
A	1371	$index = array();
	1372	reset($a);
	1373	while (list($key, $val) = each($a)) {
	1374	if ($field == 'timestamp') {
	1375	$data = $this->strToTime($val->date);
	1376	if (!$data) {
	1377	$data = $val->timestamp;
	1378	}
	1379	} else {
	1380	$data = $val->$field;
	1381	if (is_string($data)) {
	1382	$data = strtoupper(str_replace($stripArr, '', $data));
	1383	}
	1384	}
	1385	$index[$key]=$data;
	1386	}
1d5165	1387
59c216	1388	// sort index
A	1389	$i = 0;
	1390	if ($flag == 'ASC') {
	1391	asort($index);
	1392	} else {
	1393	arsort($index);
	1394	}
	1395
1d5165	1396	// form new array based on index
59c216	1397	$result = array();
A	1398	reset($index);
	1399	while (list($key, $val) = each($index)) {
	1400	$result[$key]=$a[$key];
	1401	$i++;
	1402	}
	1403	}
1d5165	1404
59c216	1405	return $result;
A	1406	}
	1407
	1408	function expunge($mailbox, $messages=NULL)
	1409	{
	1410	if (!$this->select($mailbox)) {
	1411	return -1;
	1412	}
1d5165	1413
59c216	1414	$c = 0;
A	1415	$command = $messages ? "UID EXPUNGE $messages" : "EXPUNGE";
	1416
	1417	if (!$this->putLine("exp1 $command")) {
	1418	return -1;
	1419	}
	1420
	1421	do {
	1422	$line = $this->readLine(100);
	1423	if ($line[0] == '*') {
	1424	$c++;
	1425	}
	1426	} while (!$this->startsWith($line, 'exp1', true, true));
1d5165	1427
59c216	1428	if ($this->parseResult($line) == 0) {
A	1429	$this->selected = ''; // state has changed, need to reselect
	1430	return $c;
	1431	}
	1432	$this->error = $line;
	1433	return -1;
	1434	}
	1435
	1436	function modFlag($mailbox, $messages, $flag, $mod)
	1437	{
	1438	if ($mod != '+' && $mod != '-') {
	1439	return -1;
	1440	}
1d5165	1441
59c216	1442	$flag = $this->flags[strtoupper($flag)];
1d5165	1443
59c216	1444	if (!$this->select($mailbox)) {
A	1445	return -1;
	1446	}
1d5165	1447
59c216	1448	$c = 0;
A	1449	if (!$this->putLine("flg UID STORE $messages {$mod}FLAGS ($flag)")) {
	1450	return false;
	1451	}
	1452
	1453	do {
	1454	$line = $this->readLine(1000);
	1455	if ($line[0] == '*') {
	1456	$c++;
	1457	}
	1458	} while (!$this->startsWith($line, 'flg', true, true));
	1459
	1460	if ($this->parseResult($line) == 0) {
	1461	return $c;
	1462	}
	1463
	1464	$this->error = $line;
	1465	return -1;
	1466	}
	1467
	1468	function flag($mailbox, $messages, $flag) {
	1469	return $this->modFlag($mailbox, $messages, $flag, '+');
	1470	}
	1471
	1472	function unflag($mailbox, $messages, $flag) {
	1473	return $this->modFlag($mailbox, $messages, $flag, '-');
	1474	}
	1475
	1476	function delete($mailbox, $messages) {
	1477	return $this->modFlag($mailbox, $messages, 'DELETED', '+');
	1478	}
	1479
	1480	function copy($messages, $from, $to)
	1481	{
	1482	if (empty($from) \|\| empty($to)) {
	1483	return -1;
	1484	}
1d5165	1485
59c216	1486	if (!$this->select($from)) {
A	1487	return -1;
	1488	}
1d5165	1489
59c216	1490	$this->putLine("cpy1 UID COPY $messages \"".$this->escape($to)."\"");
A	1491	$line = $this->readReply();
	1492	return $this->parseResult($line);
	1493	}
	1494
	1495	function countUnseen($folder)
	1496	{
	1497	$index = $this->search($folder, 'ALL UNSEEN');
	1498	if (is_array($index))
	1499	return count($index);
	1500	return false;
	1501	}
	1502
	1503	// Don't be tempted to change $str to pass by reference to speed this up - it will slow it down by about
	1504	// 7 times instead :-) See comments on http://uk2.php.net/references and this article:
	1505	// http://derickrethans.nl/files/phparch-php-variables-article.pdf
	1506	private function parseThread($str, $begin, $end, $root, $parent, $depth, &$depthmap, &$haschildren)
	1507	{
	1508	$node = array();
	1509	if ($str[$begin] != '(') {
	1510	$stop = $begin + strspn($str, "1234567890", $begin, $end - $begin);
	1511	$msg = substr($str, $begin, $stop - $begin);
	1512	if ($msg == 0)
	1513	return $node;
	1514	if (is_null($root))
	1515	$root = $msg;
	1516	$depthmap[$msg] = $depth;
	1517	$haschildren[$msg] = false;
	1518	if (!is_null($parent))
	1519	$haschildren[$parent] = true;
	1520	if ($stop + 1 < $end)
	1521	$node[$msg] = $this->parseThread($str, $stop + 1, $end, $root, $msg, $depth + 1, $depthmap, $haschildren);
	1522	else
	1523	$node[$msg] = array();
	1524	} else {
	1525	$off = $begin;
	1526	while ($off < $end) {
	1527	$start = $off;
	1528	$off++;
	1529	$n = 1;
	1530	while ($n > 0) {
	1531	$p = strpos($str, ')', $off);
	1532	if ($p === false) {
	1533	error_log('Mismatched brackets parsing IMAP THREAD response:');
	1534	error_log(substr($str, ($begin < 10) ? 0 : ($begin - 10), $end - $begin + 20));
	1535	error_log(str_repeat(' ', $off - (($begin < 10) ? 0 : ($begin - 10))));
	1536	return $node;
	1537	}
	1538	$p1 = strpos($str, '(', $off);
	1539	if ($p1 !== false && $p1 < $p) {
	1540	$off = $p1 + 1;
	1541	$n++;
	1542	} else {
	1543	$off = $p + 1;
	1544	$n--;
	1545	}
	1546	}
	1547	$node += $this->parseThread($str, $start + 1, $off - 1, $root, $parent, $depth, $depthmap, $haschildren);
	1548	}
	1549	}
1d5165	1550
59c216	1551	return $node;
A	1552	}
	1553
	1554	function thread($folder, $algorithm='REFERENCES', $criteria='', $encoding='US-ASCII')
	1555	{
	1556	if (!$this->select($folder)) {
	1557	return false;
	1558	}
	1559
	1560	$encoding = $encoding ? trim($encoding) : 'US-ASCII';
	1561	$algorithm = $algorithm ? trim($algorithm) : 'REFERENCES';
	1562	$criteria = $criteria ? 'ALL '.trim($criteria) : 'ALL';
1d5165	1563
59c216	1564	if (!$this->putLineC("thrd1 THREAD $algorithm $encoding $criteria")) {
A	1565	return false;
	1566	}
	1567	do {
	1568	$line = trim($this->readLine(10000));
	1569	if (preg_match('/^\* THREAD/', $line)) {
	1570	$str = trim(substr($line, 8));
	1571	$depthmap = array();
	1572	$haschildren = array();
	1573	$tree = $this->parseThread($str, 0, strlen($str), null, null, 0, $depthmap, $haschildren);
	1574	}
	1575	} while (!$this->startsWith($line, 'thrd1', true, true));
	1576
	1577	$result_code = $this->parseResult($line);
	1578	if ($result_code == 0) {
	1579	return array($tree, $depthmap, $haschildren);
	1580	}
	1581
	1582	$this->error = "Thread: $line";
1d5165	1583	return false;
59c216	1584	}
A	1585
6f31b3	1586	function search($folder, $criteria, $return_uid=false)
59c216	1587	{
A	1588	if (!$this->select($folder)) {
	1589	return false;
	1590	}
	1591
	1592	$data = '';
6f31b3	1593	$query = 'srch1 ' . ($return_uid ? 'UID ' : '') . 'SEARCH ' . chop($criteria);
59c216	1594
A	1595	if (!$this->putLineC($query)) {
	1596	return false;
	1597	}
6f31b3	1598
59c216	1599	do {
A	1600	$line = trim($this->readLine());
	1601	if ($this->startsWith($line, '* SEARCH')) {
	1602	$data .= substr($line, 8);
	1603	} else if (preg_match('/^[0-9 ]+$/', $line)) {
	1604	$data .= $line;
	1605	}
	1606	} while (!$this->startsWith($line, 'srch1', true, true));
	1607
	1608	$result_code = $this->parseResult($line);
	1609	if ($result_code == 0) {
	1610	return preg_split('/\s+/', $data, -1, PREG_SPLIT_NO_EMPTY);
	1611	}
	1612
	1613	$this->error = "Search: $line";
1d5165	1614	return false;
59c216	1615	}
A	1616
	1617	function move($messages, $from, $to)
	1618	{
	1619	if (!$from \|\| !$to) {
	1620	return -1;
	1621	}
1d5165	1622
59c216	1623	$r = $this->copy($messages, $from, $to);
A	1624
	1625	if ($r==0) {
	1626	return $this->delete($from, $messages);
	1627	}
	1628	return $r;
	1629	}
	1630
	1631	function listMailboxes($ref, $mailbox)
	1632	{
f0485a	1633	return $this->_listMailboxes($ref, $mailbox, false);
A	1634	}
	1635
	1636	function listSubscribed($ref, $mailbox)
	1637	{
	1638	return $this->_listMailboxes($ref, $mailbox, true);
	1639	}
	1640
	1641	private function _listMailboxes($ref, $mailbox, $subscribed=false)
	1642	{
59c216	1643	if (empty($mailbox)) {
A	1644	$mailbox = '*';
	1645	}
1d5165	1646
59c216	1647	if (empty($ref) && $this->rootdir) {
A	1648	$ref = $this->rootdir;
	1649	}
1d5165	1650
f0485a	1651	if ($subscribed) {
A	1652	$key = 'lsb';
	1653	$command = 'LSUB';
	1654	}
	1655	else {
	1656	$key = 'lmb';
	1657	$command = 'LIST';
	1658	}
	1659
59c216	1660	// send command
f0485a	1661	if (!$this->putLine($key." ".$command." \"". $this->escape($ref) ."\" \"". $this->escape($mailbox) ."\"")) {
A	1662	$this->error = "Couldn't send $command command";
59c216	1663	return false;
A	1664	}
1d5165	1665
59c216	1666	// get folder list
A	1667	do {
	1668	$line = $this->readLine(500);
	1669	$line = $this->multLine($line, true);
f0485a	1670	$a = explode(' ', $line);
59c216	1671
f0485a	1672	if (($line[0] == '*') && ($a[1] == $command)) {
59c216	1673	$line = rtrim($line);
A	1674	// split one line
	1675	$a = rcube_explode_quoted_string(' ', $line);
	1676	// last string is folder name
f0485a	1677	$folders[] = preg_replace(array('/^"/', '/"$/'), '', $this->unEscape($a[count($a)-1]));
59c216	1678	// second from last is delimiter
A	1679	$delim = trim($a[count($a)-2], '"');
	1680	}
f0485a	1681	} while (!$this->startsWith($line, $key, true));
59c216	1682
A	1683	if (is_array($folders)) {
	1684	return $folders;
	1685	} else if ($this->parseResult($line) == 0) {
f0485a	1686	return array();
59c216	1687	}
A	1688
	1689	$this->error = $line;
	1690	return false;
	1691	}
	1692
	1693	function fetchMIMEHeaders($mailbox, $id, $parts, $mime=true)
	1694	{
	1695	if (!$this->select($mailbox)) {
	1696	return false;
	1697	}
1d5165	1698
59c216	1699	$result = false;
A	1700	$parts = (array) $parts;
	1701	$key = 'fmh0';
	1702	$peeks = '';
	1703	$idx = 0;
	1704	$type = $mime ? 'MIME' : 'HEADER';
	1705
	1706	// format request
	1707	foreach($parts as $part)
	1708	$peeks[] = "BODY.PEEK[$part.$type]";
1d5165	1709
59c216	1710	$request = "$key FETCH $id (" . implode(' ', $peeks) . ')';
A	1711
	1712	// send request
	1713	if (!$this->putLine($request)) {
	1714	return false;
	1715	}
1d5165	1716
59c216	1717	do {
A	1718	$line = $this->readLine(1000);
	1719	$line = $this->multLine($line);
	1720
	1721	if (preg_match('/BODY\[([0-9\.]+)\.'.$type.'\]/', $line, $matches)) {
	1722	$idx = $matches[1];
	1723	$result[$idx] = preg_replace('/^(\* '.$id.' FETCH \()?\s*BODY\['.$idx.'\.'.$type.'\]\s+/', '', $line);
	1724	$result[$idx] = trim($result[$idx], '"');
	1725	$result[$idx] = rtrim($result[$idx], "\t\r\n\0\x0B");
	1726	}
	1727	} while (!$this->startsWith($line, $key, true));
	1728
	1729	return $result;
	1730	}
	1731
	1732	function fetchPartHeader($mailbox, $id, $is_uid=false, $part=NULL)
	1733	{
	1734	$part = empty($part) ? 'HEADER' : $part.'.MIME';
	1735
	1736	return $this->handlePartBody($mailbox, $id, $is_uid, $part);
	1737	}
	1738
	1739	function handlePartBody($mailbox, $id, $is_uid=false, $part='', $encoding=NULL, $print=NULL, $file=NULL)
	1740	{
	1741	if (!$this->select($mailbox)) {
	1742	return false;
	1743	}
	1744
	1745	switch ($encoding) {
	1746	case 'base64':
	1747	$mode = 1;
	1748	break;
	1749	case 'quoted-printable':
	1750	$mode = 2;
	1751	break;
	1752	case 'x-uuencode':
	1753	case 'x-uue':
	1754	case 'uue':
	1755	case 'uuencode':
	1756	$mode = 3;
	1757	break;
	1758	default:
	1759	$mode = 0;
	1760	}
1d5165	1761
59c216	1762	$reply_key = '* ' . $id;
A	1763	$result = false;
	1764
	1765	// format request
	1766	$key = 'ftch0';
	1767	$request = $key . ($is_uid ? ' UID' : '') . " FETCH $id (BODY.PEEK[$part])";
	1768	// send request
	1769	if (!$this->putLine($request)) {
	1770	return false;
	1771	}
	1772
	1773	// receive reply line
	1774	do {
	1775	$line = chop($this->readLine(1000));
	1776	$a = explode(' ', $line);
	1777	} while (!($end = $this->startsWith($line, $key, true)) && $a[2] != 'FETCH');
	1778
	1779	$len = strlen($line);
	1780
	1781	// handle empty "* X FETCH ()" response
	1782	if ($line[$len-1] == ')' && $line[$len-2] != '(') {
	1783	// one line response, get everything between first and last quotes
	1784	if (substr($line, -4, 3) == 'NIL') {
	1785	// NIL response
	1786	$result = '';
	1787	} else {
	1788	$from = strpos($line, '"') + 1;
	1789	$to = strrpos($line, '"');
	1790	$len = $to - $from;
	1791	$result = substr($line, $from, $len);
	1792	}
	1793
	1794	if ($mode == 1)
	1795	$result = base64_decode($result);
	1796	else if ($mode == 2)
	1797	$result = quoted_printable_decode($result);
	1798	else if ($mode == 3)
	1799	$result = convert_uudecode($result);
	1800
	1801	} else if ($line[$len-1] == '}') {
	1802	// multi-line request, find sizes of content and receive that many bytes
	1803	$from = strpos($line, '{') + 1;
	1804	$to = strrpos($line, '}');
	1805	$len = $to - $from;
	1806	$sizeStr = substr($line, $from, $len);
	1807	$bytes = (int)$sizeStr;
	1808	$prev = '';
1d5165	1809
59c216	1810	while ($bytes > 0) {
A	1811	$line = $this->readLine(1024);
	1812	$len = strlen($line);
1d5165	1813
59c216	1814	if ($len > $bytes) {
A	1815	$line = substr($line, 0, $bytes);
	1816	$len = strlen($line);
	1817	}
	1818	$bytes -= $len;
	1819
	1820	if ($mode == 1) {
	1821	$line = rtrim($line, "\t\r\n\0\x0B");
	1822	// create chunks with proper length for base64 decoding
	1823	$line = $prev.$line;
	1824	$length = strlen($line);
	1825	if ($length % 4) {
	1826	$length = floor($length / 4) * 4;
	1827	$prev = substr($line, $length);
	1828	$line = substr($line, 0, $length);
	1829	}
	1830	else
	1831	$prev = '';
1d5165	1832
59c216	1833	if ($file)
A	1834	fwrite($file, base64_decode($line));
	1835	else if ($print)
	1836	echo base64_decode($line);
	1837	else
	1838	$result .= base64_decode($line);
	1839	} else if ($mode == 2) {
	1840	$line = rtrim($line, "\t\r\0\x0B");
	1841	if ($file)
	1842	fwrite($file, quoted_printable_decode($line));
	1843	else if ($print)
	1844	echo quoted_printable_decode($line);
	1845	else
	1846	$result .= quoted_printable_decode($line);
	1847	} else if ($mode == 3) {
	1848	$line = rtrim($line, "\t\r\n\0\x0B");
	1849	if ($line == 'end' \|\| preg_match('/^begin\s+[0-7]+\s+.+$/', $line))
	1850	continue;
	1851	if ($file)
	1852	fwrite($file, convert_uudecode($line));
	1853	else if ($print)
	1854	echo convert_uudecode($line);
	1855	else
	1856	$result .= convert_uudecode($line);
	1857	} else {
	1858	$line = rtrim($line, "\t\r\n\0\x0B");
	1859	if ($file)
	1860	fwrite($file, $line . "\n");
	1861	else if ($print)
	1862	echo $line . "\n";
	1863	else
	1864	$result .= $line . "\n";
	1865	}
	1866	}
	1867	}
1d5165	1868
59c216	1869	// read in anything up until last line
A	1870	if (!$end)
	1871	do {
	1872	$line = $this->readLine(1024);
	1873	} while (!$this->startsWith($line, $key, true));
	1874
	1875	if ($result) {
	1876	if ($file) {
	1877	fwrite($file, $result);
	1878	} else if ($print) {
	1879	echo $result;
	1880	} else
	1881	return $result;
	1882	return true;
	1883	}
	1884
	1885	return false;
	1886	}
	1887
	1888	function createFolder($folder)
	1889	{
	1890	if ($this->putLine('c CREATE "' . $this->escape($folder) . '"')) {
	1891	do {
	1892	$line = $this->readLine(300);
	1893	} while (!$this->startsWith($line, 'c ', true, true));
	1894	return ($this->parseResult($line) == 0);
	1895	}
	1896	return false;
	1897	}
	1898
	1899	function renameFolder($from, $to)
	1900	{
	1901	if ($this->putLine('r RENAME "' . $this->escape($from) . '" "' . $this->escape($to) . '"')) {
	1902	do {
	1903	$line = $this->readLine(300);
	1904	} while (!$this->startsWith($line, 'r ', true, true));
	1905	return ($this->parseResult($line) == 0);
	1906	}
	1907	return false;
	1908	}
	1909
	1910	function deleteFolder($folder)
	1911	{
	1912	if ($this->putLine('d DELETE "' . $this->escape($folder). '"')) {
	1913	do {
	1914	$line = $this->readLine(300);
	1915	} while (!$this->startsWith($line, 'd ', true, true));
	1916	return ($this->parseResult($line) == 0);
	1917	}
	1918	return false;
	1919	}
	1920
	1921	function clearFolder($folder)
	1922	{
	1923	$num_in_trash = $this->countMessages($folder);
	1924	if ($num_in_trash > 0) {
	1925	$this->delete($folder, '1:*');
	1926	}
	1927	return ($this->expunge($folder) >= 0);
	1928	}
	1929
	1930	function subscribe($folder)
	1931	{
	1932	$query = 'sub1 SUBSCRIBE "' . $this->escape($folder). '"';
	1933	$this->putLine($query);
	1934
	1935	$line = trim($this->readLine(512));
	1936	return ($this->parseResult($line) == 0);
	1937	}
	1938
	1939	function unsubscribe($folder)
	1940	{
	1941	$query = 'usub1 UNSUBSCRIBE "' . $this->escape($folder) . '"';
	1942	$this->putLine($query);
1d5165	1943
59c216	1944	$line = trim($this->readLine(512));
A	1945	return ($this->parseResult($line) == 0);
	1946	}
	1947
	1948	function append($folder, &$message)
	1949	{
	1950	if (!$folder) {
	1951	return false;
	1952	}
	1953
	1954	$message = str_replace("\r", '', $message);
	1955	$message = str_replace("\n", "\r\n", $message);
	1956
	1957	$len = strlen($message);
	1958	if (!$len) {
	1959	return false;
	1960	}
	1961
	1962	$request = 'a APPEND "' . $this->escape($folder) .'" (\\Seen) {' . $len . '}';
	1963
	1964	if ($this->putLine($request)) {
	1965	$line = $this->readLine(512);
	1966
	1967	if ($line[0] != '+') {
	1968	// $errornum = $this->parseResult($line);
	1969	$this->error = "Cannot write to folder: $line";
	1970	return false;
	1971	}
	1972
	1973	if (!$this->putLine($message)) {
	1974	return false;
	1975	}
	1976
	1977	do {
	1978	$line = $this->readLine();
	1979	} while (!$this->startsWith($line, 'a ', true, true));
1d5165	1980
59c216	1981	$result = ($this->parseResult($line) == 0);
A	1982	if (!$result) {
	1983	$this->error = $line;
	1984	}
	1985	return $result;
	1986	}
	1987
	1988	$this->error = "Couldn't send command \"$request\"";
	1989	return false;
	1990	}
	1991
	1992	function appendFromFile($folder, $path, $headers=null, $separator="\n\n")
	1993	{
	1994	if (!$folder) {
	1995	return false;
	1996	}
1d5165	1997
59c216	1998	// open message file
A	1999	$in_fp = false;
	2000	if (file_exists(realpath($path))) {
	2001	$in_fp = fopen($path, 'r');
	2002	}
1d5165	2003	if (!$in_fp) {
59c216	2004	$this->error = "Couldn't open $path for reading";
A	2005	return false;
	2006	}
1d5165	2007
59c216	2008	$len = filesize($path);
A	2009	if (!$len) {
	2010	return false;
	2011	}
	2012
	2013	if ($headers) {
	2014	$headers = preg_replace('/[\r\n]+$/', '', $headers);
	2015	$len += strlen($headers) + strlen($separator);
	2016	}
	2017
	2018	// send APPEND command
	2019	$request = 'a APPEND "' . $this->escape($folder) . '" (\\Seen) {' . $len . '}';
	2020	if ($this->putLine($request)) {
	2021	$line = $this->readLine(512);
	2022
	2023	if ($line[0] != '+') {
	2024	//$errornum = $this->parseResult($line);
	2025	$this->error = "Cannot write to folder: $line";
	2026	return false;
	2027	}
	2028
	2029	// send headers with body separator
	2030	if ($headers) {
	2031	$this->putLine($headers . $separator, false);
	2032	}
	2033
	2034	// send file
	2035	while (!feof($in_fp) && $this->fp) {
	2036	$buffer = fgets($in_fp, 4096);
	2037	$this->putLine($buffer, false);
	2038	}
	2039	fclose($in_fp);
	2040
	2041	if (!$this->putLine('')) { // \r\n
	2042	return false;
	2043	}
	2044
	2045	// read response
	2046	do {
	2047	$line = $this->readLine();
	2048	} while (!$this->startsWith($line, 'a ', true, true));
	2049
	2050	$result = ($this->parseResult($line) == 0);
	2051	if (!$result) {
	2052	$this->error = $line;
	2053	}
	2054
	2055	return $result;
	2056	}
1d5165	2057
59c216	2058	$this->error = "Couldn't send command \"$request\"";
A	2059	return false;
	2060	}
	2061
	2062	function fetchStructureString($folder, $id, $is_uid=false)
	2063	{
	2064	if (!$this->select($folder)) {
	2065	return false;
	2066	}
	2067
	2068	$key = 'F1247';
	2069	$result = false;
	2070
	2071	if ($this->putLine($key . ($is_uid ? ' UID' : '') ." FETCH $id (BODYSTRUCTURE)")) {
	2072	do {
	2073	$line = $this->readLine(5000);
	2074	$line = $this->multLine($line, true);
	2075	if (!preg_match("/^$key/", $line))
	2076	$result .= $line;
	2077	} while (!$this->startsWith($line, $key, true, true));
	2078
	2079	$result = trim(substr($result, strpos($result, 'BODYSTRUCTURE')+13, -1));
	2080	}
	2081
	2082	return $result;
	2083	}
	2084
	2085	function getQuota()
	2086	{
	2087	/*
	2088	* GETQUOTAROOT "INBOX"
	2089	* QUOTAROOT INBOX user/rchijiiwa1
	2090	* QUOTA user/rchijiiwa1 (STORAGE 654 9765)
	2091	* OK Completed
	2092	*/
	2093	$result = false;
	2094	$quota_lines = array();
1d5165	2095
59c216	2096	// get line(s) containing quota info
A	2097	if ($this->putLine('QUOT1 GETQUOTAROOT "INBOX"')) {
	2098	do {
	2099	$line = chop($this->readLine(5000));
	2100	if ($this->startsWith($line, '* QUOTA ')) {
	2101	$quota_lines[] = $line;
	2102	}
	2103	} while (!$this->startsWith($line, 'QUOT1', true, true));
	2104	}
1d5165	2105
59c216	2106	// return false if not found, parse if found
A	2107	$min_free = PHP_INT_MAX;
	2108	foreach ($quota_lines as $key => $quota_line) {
	2109	$quota_line = preg_replace('/[()]/', '', $quota_line);
	2110	$parts = explode(' ', $quota_line);
	2111	$storage_part = array_search('STORAGE', $parts);
1d5165	2112
59c216	2113	if (!$storage_part)
A	2114	continue;
1d5165	2115
59c216	2116	$used = intval($parts[$storage_part+1]);
A	2117	$total = intval($parts[$storage_part+2]);
1d5165	2118	$free = $total - $used;
A	2119
59c216	2120	// return lowest available space from all quotas
1d5165	2121	if ($free < $min_free) {
A	2122	$min_free = $free;
59c216	2123	$result['used'] = $used;
A	2124	$result['total'] = $total;
	2125	$result['percent'] = min(100, round(($used/max(1,$total))*100));
	2126	$result['free'] = 100 - $result['percent'];
	2127	}
	2128	}
	2129
	2130	return $result;
	2131	}
	2132
6f31b3	2133	private function _xor($string, $string2)
59c216	2134	{
A	2135	$result = '';
	2136	$size = strlen($string);
	2137	for ($i=0; $i<$size; $i++) {
	2138	$result .= chr(ord($string[$i]) ^ ord($string2[$i]));
	2139	}
	2140	return $result;
	2141	}
	2142
	2143	private function strToTime($date)
	2144	{
	2145	// support non-standard "GMTXXXX" literal
	2146	$date = preg_replace('/GMT\s*([+-][0-9]+)/', '\\1', $date);
	2147	// if date parsing fails, we have a date in non-rfc format.
	2148	// remove token from the end and try again
	2149	while ((($ts = @strtotime($date))===false) \|\| ($ts < 0)) {
	2150	$d = explode(' ', $date);
	2151	array_pop($d);
	2152	if (!$d) break;
	2153	$date = implode(' ', $d);
	2154	}
	2155
	2156	$ts = (int) $ts;
	2157
1d5165	2158	return $ts < 0 ? 0 : $ts;
59c216	2159	}
A	2160
	2161	private function SplitHeaderLine($string)
	2162	{
	2163	$pos = strpos($string, ':');
	2164	if ($pos>0) {
	2165	$res[0] = substr($string, 0, $pos);
	2166	$res[1] = trim(substr($string, $pos+1));
	2167	return $res;
	2168	}
	2169	return $string;
	2170	}
	2171
	2172	private function parseNamespace($str, &$i, $len=0, $l)
	2173	{
	2174	if (!$l) {
	2175	$str = str_replace('NIL', '()', $str);
	2176	}
	2177	if (!$len) {
	2178	$len = strlen($str);
	2179	}
	2180	$data = array();
	2181	$in_quotes = false;
	2182	$elem = 0;
1d5165	2183
59c216	2184	for ($i;$i<$len;$i++) {
A	2185	$c = (string)$str[$i];
	2186	if ($c == '(' && !$in_quotes) {
	2187	$i++;
	2188	$data[$elem] = $this->parseNamespace($str, $i, $len, $l++);
	2189	$elem++;
	2190	} else if ($c == ')' && !$in_quotes) {
	2191	return $data;
	2192	} else if ($c == '\\') {
	2193	$i++;
	2194	if ($in_quotes) {
	2195	$data[$elem] .= $c.$str[$i];
	2196	}
	2197	} else if ($c == '"') {
	2198	$in_quotes = !$in_quotes;
	2199	if (!$in_quotes) {
	2200	$elem++;
	2201	}
	2202	} else if ($in_quotes) {
	2203	$data[$elem].=$c;
	2204	}
	2205	}
1d5165	2206
59c216	2207	return $data;
A	2208	}
	2209
	2210	private function escape($string)
	2211	{
1d5165	2212	return strtr($string, array('"'=>'\\"', '\\' => '\\\\'));
59c216	2213	}
A	2214
	2215	private function unEscape($string)
	2216	{
1d5165	2217	return strtr($string, array('\\"'=>'"', '\\\\' => '\\'));
59c216	2218	}
A	2219
	2220	}
	2221
	2222	?>