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Socket.php in AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress 11.0.4, at back/Libraries/Pear/Socket.php

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1	<?php
2
3	namespace AcyMailing\Libraries\Pear;
4
5	acym_cmsLoaded();
6
7	/**
8	* Net_Socket
9	*
10	* PHP Version 5
11	*
12	* LICENSE:
13	*
14	* Copyright (c) 1997-2017 The PHP Group
15	* All rights reserved.
16	*
17	* Redistribution and use in source and binary forms, with or without
18	* modification, are permitted provided that the following conditions
19	* are met:
20	*
21	* o Redistributions of source code must retain the above copyright
22	* notice, this list of conditions and the following disclaimer.
23	* o Redistributions in binary form must reproduce the above copyright
24	* notice, this list of conditions and the following disclaimer in the
25	* documentation and/or other materials provided with the distribution.
26	*
27	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
28	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
29	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
30	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
31	* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
32	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
33	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
34	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
35	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
36	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
37	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38	*
39	* @category Net
40	* @package Net_Socket
41	* @author Stig Bakken <[email protected]>
42	* @author Chuck Hagenbuch <[email protected]>
43	* @copyright 1997-2017 The PHP Group
44	* @license http://opensource.org/licenses/bsd-license.php BSD-2-Clause
45	* @link http://pear.php.net/packages/Net_Socket
46	*/
47
48	define('NET_SOCKET_READ', 1);
49	define('NET_SOCKET_WRITE', 2);
50	define('NET_SOCKET_ERROR', 4);
51
52	/**
53	* Generalized Socket class.
54	*
55	* @category Net
56	* @package Net_Socket
57	* @author Stig Bakken <[email protected]>
58	* @author Chuck Hagenbuch <[email protected]>
59	* @copyright 1997-2017 The PHP Group
60	* @license http://opensource.org/licenses/bsd-license.php BSD-2-Clause
61	* @link http://pear.php.net/packages/Net_Socket
62	*/
63	class Socket extends Pear
64	{
65	/**
66	* Socket file pointer.
67	* @var resource $fp
68	*/
69	public $fp = null;
70
71	/**
72	* Whether the socket is blocking. Defaults to true.
73	* @var boolean $blocking
74	*/
75	public $blocking = true;
76
77	/**
78	* Whether the socket is persistent. Defaults to false.
79	* @var boolean $persistent
80	*/
81	public $persistent = false;
82
83	/**
84	* The IP address to connect to.
85	* @var string $addr
86	*/
87	public $addr = '';
88
89	/**
90	* The port number to connect to.
91	* @var integer $port
92	*/
93	public $port = 0;
94
95	/**
96	* Number of seconds to wait on socket operations before assuming
97	* there's no more data. Defaults to no timeout.
98	* @var integer\|float $timeout
99	*/
100	public $timeout = null;
101
102	/**
103	* Number of bytes to read at a time in readLine() and
104	* readAll(). Defaults to 2048.
105	* @var integer $lineLength
106	*/
107	public $lineLength = 2048;
108
109	/**
110	* The string to use as a newline terminator. Usually "\r\n" or "\n".
111	* @var string $newline
112	*/
113	public $newline = "\r\n";
114
115	/**
116	* Connect to the specified port. If called when the socket is
117	* already connected, it disconnects and connects again.
118	*
119	* @param string $addr IP address or host name (may be with protocol prefix).
120	* @param integer $port TCP port number.
121	* @param boolean $persistent (optional) Whether the connection is
122	* persistent (kept open between requests
123	* by the web server).
124	* @param integer $timeout (optional) Connection socket timeout.
125	* @param array $options See options for stream_context_create.
126	*
127	* @access public
128	*
129	* @return boolean\|Error True on success or a Error on failure.
130	*/
131	public function connect(
132	$addr,
133	$port = 0,
134	$persistent = null,
135	$timeout = null,
136	$options = null
137	) {
138	if (is_resource($this->fp)) {
139	@fclose($this->fp);
140	$this->fp = null;
141	}
142
143	if (!$addr) {
144	return $this->raiseError('$addr cannot be empty');
145	} else {
146	if (strspn($addr, ':.0123456789') === strlen($addr)) {
147	$this->addr = strpos($addr, ':') !== false ? '['.$addr.']' : $addr;
148	} else {
149	$this->addr = $addr;
150	}
151	}
152
153	$this->port = $port % 65536;
154
155	if ($persistent !== null) {
156	$this->persistent = $persistent;
157	}
158
159	$openfunc = $this->persistent ? 'pfsockopen' : 'fsockopen';
160	$errno = 0;
161	$errstr = '';
162
163	if (function_exists('error_clear_last')) {
164	error_clear_last();
165	} else {
166	$old_track_errors = @ini_set('track_errors', 1);
167	}
168
169	if ($timeout <= 0) {
170	$timeout = @ini_get('default_socket_timeout');
171	}
172
173	if ($options && function_exists('stream_context_create')) {
174	$context = stream_context_create($options);
175
176	// Since PHP 5 fsockopen doesn't allow context specification
177	if (function_exists('stream_socket_client')) {
178	$flags = STREAM_CLIENT_CONNECT;
179
180	if ($this->persistent) {
181	$flags = STREAM_CLIENT_PERSISTENT;
182	}
183
184	$addr = $this->addr.':'.$this->port;
185	$fp = @stream_socket_client(
186	$addr,
187	$errno,
188	$errstr,
189	$timeout,
190	$flags,
191	$context
192	);
193	} else {
194	$fp = @$openfunc(
195	$this->addr,
196	$this->port,
197	$errno,
198	$errstr,
199	$timeout,
200	$context
201	);
202	}
203	} else {
204	$fp = @$openfunc($this->addr, $this->port, $errno, $errstr, $timeout);
205	}
206
207	if (!$fp) {
208	if ($errno === 0 && !strlen($errstr)) {
209	$errstr = '';
210	if (isset($old_track_errors)) {
211	$errstr = $php_errormsg ? : '';
212	@ini_set('track_errors', $old_track_errors);
213	} else {
214	$lastError = error_get_last();
215	if (isset($lastError['message'])) {
216	$errstr = $lastError['message'];
217	}
218	}
219	}
220
221	return $this->raiseError($errstr, $errno);
222	}
223
224	if (isset($old_track_errors)) {
225	@ini_set('track_errors', $old_track_errors);
226	}
227
228	$this->fp = $fp;
229	$this->setTimeout();
230
231	return $this->setBlocking($this->blocking);
232	}
233
234	/**
235	* Disconnects from the peer, closes the socket.
236	*
237	* @access public
238	* @return mixed true on success or a Error instance otherwise
239	*/
240	public function disconnect()
241	{
242	if (!is_resource($this->fp)) {
243	return $this->raiseError('not connected');
244	}
245
246	@fclose($this->fp);
247	$this->fp = null;
248
249	return true;
250	}
251
252	/**
253	* Set the newline character/sequence to use.
254	*
255	* @param string $newline Newline character(s)
256	*
257	* @return boolean True
258	*/
259	public function setNewline($newline)
260	{
261	$this->newline = $newline;
262
263	return true;
264	}
265
266	/**
267	* Find out if the socket is in blocking mode.
268	*
269	* @access public
270	* @return boolean The current blocking mode.
271	*/
272	public function isBlocking()
273	{
274	return $this->blocking;
275	}
276
277	/**
278	* Sets whether the socket connection should be blocking or
279	* not. A read call to a non-blocking socket will return immediately
280	* if there is no data available, whereas it will block until there
281	* is data for blocking sockets.
282	*
283	* @param boolean $mode True for blocking sockets, false for nonblocking.
284	*
285	* @access public
286	* @return mixed true on success or a Error instance otherwise
287	*/
288	public function setBlocking($mode)
289	{
290	if (!is_resource($this->fp)) {
291	return $this->raiseError('not connected');
292	}
293
294	$this->blocking = $mode;
295	stream_set_blocking($this->fp, (int)$this->blocking);
296
297	return true;
298	}
299
300	/**
301	* Sets the timeout value on socket descriptor,
302	* expressed in the sum of seconds and microseconds
303	*
304	* @param integer $seconds Seconds.
305	* @param integer $microseconds Microseconds, optional.
306	*
307	* @access public
308	* @return mixed True on success or false on failure or
309	* a Error instance when not connected
310	*/
311	public function setTimeout($seconds = null, $microseconds = null)
312	{
313	if (!is_resource($this->fp)) {
314	return $this->raiseError('not connected');
315	}
316
317	if ($seconds === null && $microseconds === null) {
318	$seconds = (int)$this->timeout;
319	$microseconds = (int)(($this->timeout - $seconds) * 1000000);
320	} else {
321	$this->timeout = $seconds + $microseconds / 1000000;
322	}
323
324	if ($this->timeout > 0) {
325	return stream_set_timeout($this->fp, (int)$seconds, (int)$microseconds);
326	} else {
327	return false;
328	}
329	}
330
331	/**
332	* Sets the file buffering size on the stream.
333	* See php's stream_set_write_buffer for more information.
334	*
335	* @param integer $size Write buffer size.
336	*
337	* @access public
338	* @return mixed on success or an Error object otherwise
339	*/
340	public function setWriteBuffer($size)
341	{
342	if (!is_resource($this->fp)) {
343	return $this->raiseError('not connected');
344	}
345
346	$returned = stream_set_write_buffer($this->fp, $size);
347	if ($returned === 0) {
348	return true;
349	}
350
351	return $this->raiseError('Cannot set write buffer.');
352	}
353
354	/**
355	* Returns information about an existing socket resource.
356	* Currently returns four entries in the result array:
357	*
358	* <p>
359	* timed_out (bool) - The socket timed out waiting for data<br>
360	* blocked (bool) - The socket was blocked<br>
361	* eof (bool) - Indicates EOF event<br>
362	* unread_bytes (int) - Number of bytes left in the socket buffer<br>
363	* </p>
364	*
365	* @access public
366	* @return mixed Array containing information about existing socket
367	* resource or a Error instance otherwise
368	*/
369	public function getStatus()
370	{
371	if (!is_resource($this->fp)) {
372	return $this->raiseError('not connected');
373	}
374
375	return stream_get_meta_data($this->fp);
376	}
377
378	/**
379	* Get a specified line of data
380	*
381	* @param int $size Reading ends when size - 1 bytes have been read,
382	* or a newline or an EOF (whichever comes first).
383	* If no size is specified, it will keep reading from
384	* the stream until it reaches the end of the line.
385	*
386	* @access public
387	* @return mixed $size bytes of data from the socket, or a Error if
388	* not connected. If an error occurs, FALSE is returned.
389	*/
390	public function gets($size = null)
391	{
392	if (!is_resource($this->fp)) {
393	return $this->raiseError('not connected');
394	}
395
396	if (null === $size) {
397	return @fgets($this->fp);
398	} else {
399	return @fgets($this->fp, $size);
400	}
401	}
402
403	/**
404	* Read a specified amount of data. This is guaranteed to return,
405	* and has the added benefit of getting everything in one fread()
406	* chunk; if you know the size of the data you're getting
407	* beforehand, this is definitely the way to go.
408	*
409	* @param integer $size The number of bytes to read from the socket.
410	*
411	* @access public
412	* @return string $size bytes of data from the socket, or a Error if
413	* not connected.
414	*/
415	public function read($size)
416	{
417	if (!is_resource($this->fp)) {
418	return $this->raiseError('not connected');
419	}
420
421	return @fread($this->fp, $size);
422	}
423
424	/**
425	* Write a specified amount of data.
426	*
427	* @param string $data Data to write.
428	* @param integer $blocksize Amount of data to write at once.
429	* NULL means all at once.
430	*
431	* @access public
432	* @return mixed If the socket is not connected, returns an instance of
433	* Error.
434	* If the write succeeds, returns the number of bytes written.
435	* If the write fails, returns false.
436	* If the socket times out, returns an instance of Error.
437	*/
438	public function write($data, $blocksize = null)
439	{
440	if (!is_resource($this->fp)) {
441	return $this->raiseError('not connected');
442	}
443
444	if (null === $blocksize && !OS_WINDOWS) {
445	$written = @fwrite($this->fp, $data);
446
447	// Check for timeout or lost connection
448	if ($written === false) {
449	$meta_data = $this->getStatus();
450
451	if (!is_array($meta_data)) {
452	return $meta_data; // Error
453	}
454
455	if (!empty($meta_data['timed_out'])) {
456	return $this->raiseError('timed out');
457	}
458	}
459
460	return $written;
461	} else {
462	if (null === $blocksize) {
463	$blocksize = 1024;
464	}
465
466	$pos = 0;
467	$size = strlen($data);
468	while ($pos < $size) {
469	$written = @fwrite($this->fp, substr($data, $pos, $blocksize));
470
471	// Check for timeout or lost connection
472	if ($written === false) {
473	$meta_data = $this->getStatus();
474
475	if (!is_array($meta_data)) {
476	return $meta_data; // Error
477	}
478
479	if (!empty($meta_data['timed_out'])) {
480	return $this->raiseError('timed out');
481	}
482
483	return $written;
484	}
485
486	$pos += $written;
487	}
488
489	return $pos;
490	}
491	}
492
493	/**
494	* Write a line of data to the socket, followed by a trailing newline.
495	*
496	* @param string $data Data to write
497	*
498	* @access public
499	* @return mixed fwrite() result, or Error when not connected
500	*/
501	public function writeLine($data)
502	{
503	if (!is_resource($this->fp)) {
504	return $this->raiseError('not connected');
505	}
506
507	return fwrite($this->fp, $data.$this->newline);
508	}
509
510	/**
511	* Tests for end-of-file on a socket descriptor.
512	*
513	* Also returns true if the socket is disconnected.
514	*
515	* @access public
516	* @return bool
517	*/
518	public function eof()
519	{
520	return (!is_resource($this->fp) \|\| feof($this->fp));
521	}
522
523	/**
524	* Reads a byte of data
525	*
526	* @access public
527	* @return integer 1 byte of data from the socket, or a Error if
528	* not connected.
529	*/
530	public function readByte()
531	{
532	if (!is_resource($this->fp)) {
533	return $this->raiseError('not connected');
534	}
535
536	return ord(@fread($this->fp, 1));
537	}
538
539	/**
540	* Reads a word of data
541	*
542	* @access public
543	* @return integer 1 word of data from the socket, or a Error if
544	* not connected.
545	*/
546	public function readWord()
547	{
548	if (!is_resource($this->fp)) {
549	return $this->raiseError('not connected');
550	}
551
552	$buf = @fread($this->fp, 2);
553
554	return (ord($buf[0]) + (ord($buf[1]) << 8));
555	}
556
557	/**
558	* Reads an int of data
559	*
560	* @access public
561	* @return integer 1 int of data from the socket, or a Error if
562	* not connected.
563	*/
564	public function readInt()
565	{
566	if (!is_resource($this->fp)) {
567	return $this->raiseError('not connected');
568	}
569
570	$buf = @fread($this->fp, 4);
571
572	return (ord($buf[0]) + (ord($buf[1]) << 8) +
573	(ord($buf[2]) << 16) + (ord($buf[3]) << 24));
574	}
575
576	/**
577	* Reads a zero-terminated string of data
578	*
579	* @access public
580	* @return string, or a Error if
581	* not connected.
582	*/
583	public function readString()
584	{
585	if (!is_resource($this->fp)) {
586	return $this->raiseError('not connected');
587	}
588
589	$string = '';
590	while (($char = @fread($this->fp, 1)) !== "\x00") {
591	$string .= $char;
592	}
593
594	return $string;
595	}
596
597	/**
598	* Reads an IP Address and returns it in a dot formatted string
599	*
600	* @access public
601	* @return string Dot formatted string, or a Error if
602	* not connected.
603	*/
604	public function readIPAddress()
605	{
606	if (!is_resource($this->fp)) {
607	return $this->raiseError('not connected');
608	}
609
610	$buf = @fread($this->fp, 4);
611
612	return sprintf(
613	'%d.%d.%d.%d',
614	ord($buf[0]),
615	ord($buf[1]),
616	ord($buf[2]),
617	ord($buf[3])
618	);
619	}
620
621	/**
622	* Read until either the end of the socket or a newline, whichever
623	* comes first. Strips the trailing newline from the returned data.
624	*
625	* @access public
626	* @return string All available data up to a newline, without that
627	* newline, or until the end of the socket, or a Error if
628	* not connected.
629	*/
630	public function readLine()
631	{
632	if (!is_resource($this->fp)) {
633	return $this->raiseError('not connected');
634	}
635
636	$line = '';
637
638	$timeout = time() + $this->timeout;
639
640	while (!feof($this->fp) && (!$this->timeout \|\| time() < $timeout)) {
641	$line .= @fgets($this->fp, $this->lineLength);
642	if (substr($line, -1) == "\n") {
643	return rtrim($line, $this->newline);
644	}
645	}
646
647	return $line;
648	}
649
650	/**
651	* Read until the socket closes, or until there is no more data in
652	* the inner PHP buffer. If the inner buffer is empty, in blocking
653	* mode we wait for at least 1 byte of data. Therefore, in
654	* blocking mode, if there is no data at all to be read, this
655	* function will never exit (unless the socket is closed on the
656	* remote end).
657	*
658	* @access public
659	*
660	* @return string All data until the socket closes, or a Error if
661	* not connected.
662	*/
663	public function readAll()
664	{
665	if (!is_resource($this->fp)) {
666	return $this->raiseError('not connected');
667	}
668
669	$data = '';
670	$timeout = time() + $this->timeout;
671
672	while (!feof($this->fp) && (!$this->timeout \|\| time() < $timeout)) {
673	$data .= @fread($this->fp, $this->lineLength);
674	}
675
676	return $data;
677	}
678
679	/**
680	* Runs the equivalent of the select() system call on the socket
681	* with a timeout specified by tv_sec and tv_usec.
682	*
683	* @param integer $state Which of read/write/error to check for.
684	* @param integer $tv_sec Number of seconds for timeout.
685	* @param integer $tv_usec Number of microseconds for timeout.
686	*
687	* @access public
688	* @return False if select fails, integer describing which of read/write/error
689	* are ready, or Error if not connected.
690	*/
691	public function select($state, $tv_sec, $tv_usec = 0)
692	{
693	if (!is_resource($this->fp)) {
694	return $this->raiseError('not connected');
695	}
696
697	$read = null;
698	$write = null;
699	$except = null;
700	if ($state & NET_SOCKET_READ) {
701	$read[] = $this->fp;
702	}
703	if ($state & NET_SOCKET_WRITE) {
704	$write[] = $this->fp;
705	}
706	if ($state & NET_SOCKET_ERROR) {
707	$except[] = $this->fp;
708	}
709	if (false === ($sr = stream_select(
710	$read,
711	$write,
712	$except,
713	$tv_sec,
714	$tv_usec
715	))
716	) {
717	return false;
718	}
719
720	$result = 0;
721	if (count($read)) {
722	$result \|= NET_SOCKET_READ;
723	}
724	if (count($write)) {
725	$result \|= NET_SOCKET_WRITE;
726	}
727	if (count($except)) {
728	$result \|= NET_SOCKET_ERROR;
729	}
730
731	return $result;
732	}
733
734	/**
735	* Turns encryption on/off on a connected socket.
736	*
737	* @param bool $enabled Set this parameter to true to enable encryption
738	* and false to disable encryption.
739	* @param integer $type Type of encryption. See stream_socket_enable_crypto()
740	* for values.
741	*
742	* @return false on error, true on success and 0 if there isn't enough data
743	* and the user should try again (non-blocking sockets only).
744	* A Error object is returned if the socket is not
745	* connected
746	* @see http://se.php.net/manual/en/function.stream-socket-enable-crypto.php
747	* @access public
748	*/
749	public function enableCrypto($enabled, $type)
750	{
751	if (version_compare(phpversion(), '5.1.0', '>=')) {
752	if (!is_resource($this->fp)) {
753	return $this->raiseError('not connected');
754	}
755
756	return @stream_socket_enable_crypto($this->fp, $enabled, $type);
757	} else {
758	$msg = 'Net_Socket::enableCrypto() requires php version >= 5.1.0';
759
760	return $this->raiseError($msg);
761	}
762	}
763
764	}
765