3 // +----------------------------------------------------------------------+
5 // +----------------------------------------------------------------------+
6 // | Copyright (c) 1997-2003 The PHP Group |
7 // +----------------------------------------------------------------------+
8 // | This source file is subject to version 2.0 of the PHP license, |
9 // | that is bundled with this package in the file LICENSE, and is |
10 // | available at through the world-wide-web at |
11 // | http://www.php.net/license/2_02.txt. |
12 // | If you did not receive a copy of the PHP license and are unable to |
13 // | obtain it through the world-wide-web, please send a note to |
14 // | license@php.net so we can mail you a copy immediately. |
15 // +----------------------------------------------------------------------+
16 // | Authors: Stig Bakken <ssb@php.net> |
17 // | Chuck Hagenbuch <chuck@horde.org> |
18 // +----------------------------------------------------------------------+
20 // $Id: Socket.php,v 1.1 2008-05-04 07:04:50 hsur Exp $
22 require_once 'PEAR.php';
24 define('NET_SOCKET_READ', 1);
25 define('NET_SOCKET_WRITE', 2);
26 define('NET_SOCKET_ERROR', 3);
29 * Generalized Socket class.
32 * @author Stig Bakken <ssb@php.net>
33 * @author Chuck Hagenbuch <chuck@horde.org>
35 class Net_Socket extends PEAR {
38 * Socket file pointer.
44 * Whether the socket is blocking. Defaults to true.
45 * @var boolean $blocking
50 * Whether the socket is persistent. Defaults to false.
51 * @var boolean $persistent
53 var $persistent = false;
56 * The IP address to connect to.
62 * The port number to connect to.
68 * Number of seconds to wait on socket connections before assuming
69 * there's no more data. Defaults to no timeout.
70 * @var integer $timeout
75 * Number of bytes to read at a time in readLine() and
76 * readAll(). Defaults to 2048.
77 * @var integer $lineLength
79 var $lineLength = 2048;
82 * Connect to the specified port. If called when the socket is
83 * already connected, it disconnects and connects again.
85 * @param string $addr IP address or host name.
86 * @param integer $port TCP port number.
87 * @param boolean $persistent (optional) Whether the connection is
88 * persistent (kept open between requests
90 * @param integer $timeout (optional) How long to wait for data.
91 * @param array $options See options for stream_context_create.
95 * @return boolean | PEAR_Error True on success or a PEAR_Error on failure.
97 function connect($addr, $port = 0, $persistent = null, $timeout = null, $options = null)
99 if (is_resource($this->fp)) {
105 return $this->raiseError('$addr cannot be empty');
106 } elseif (strspn($addr, '.0123456789') == strlen($addr) ||
107 strstr($addr, '/') !== false) {
110 $this->addr = @gethostbyname($addr);
113 $this->port = $port % 65536;
115 if ($persistent !== null) {
116 $this->persistent = $persistent;
119 if ($timeout !== null) {
120 $this->timeout = $timeout;
123 $openfunc = $this->persistent ? 'pfsockopen' : 'fsockopen';
126 if ($options && function_exists('stream_context_create')) {
127 if ($this->timeout) {
128 $timeout = $this->timeout;
132 $context = stream_context_create($options);
133 $fp = @$openfunc($this->addr, $this->port, $errno, $errstr, $timeout, $context);
135 if ($this->timeout) {
136 $fp = @$openfunc($this->addr, $this->port, $errno, $errstr, $this->timeout);
138 $fp = @$openfunc($this->addr, $this->port, $errno, $errstr);
143 return $this->raiseError($errstr, $errno);
148 return $this->setBlocking($this->blocking);
152 * Disconnects from the peer, closes the socket.
155 * @return mixed true on success or an error object otherwise
157 function disconnect()
159 if (!is_resource($this->fp)) {
160 return $this->raiseError('not connected');
169 * Find out if the socket is in blocking mode.
172 * @return boolean The current blocking mode.
174 function isBlocking()
176 return $this->blocking;
180 * Sets whether the socket connection should be blocking or
181 * not. A read call to a non-blocking socket will return immediately
182 * if there is no data available, whereas it will block until there
183 * is data for blocking sockets.
185 * @param boolean $mode True for blocking sockets, false for nonblocking.
187 * @return mixed true on success or an error object otherwise
189 function setBlocking($mode)
191 if (!is_resource($this->fp)) {
192 return $this->raiseError('not connected');
195 $this->blocking = $mode;
196 socket_set_blocking($this->fp, $this->blocking);
201 * Sets the timeout value on socket descriptor,
202 * expressed in the sum of seconds and microseconds
204 * @param integer $seconds Seconds.
205 * @param integer $microseconds Microseconds.
207 * @return mixed true on success or an error object otherwise
209 function setTimeout($seconds, $microseconds)
211 if (!is_resource($this->fp)) {
212 return $this->raiseError('not connected');
215 return socket_set_timeout($this->fp, $seconds, $microseconds);
219 * Returns information about an existing socket resource.
220 * Currently returns four entries in the result array:
223 * timed_out (bool) - The socket timed out waiting for data<br>
224 * blocked (bool) - The socket was blocked<br>
225 * eof (bool) - Indicates EOF event<br>
226 * unread_bytes (int) - Number of bytes left in the socket buffer<br>
230 * @return mixed Array containing information about existing socket resource or an error object otherwise
234 if (!is_resource($this->fp)) {
235 return $this->raiseError('not connected');
238 return socket_get_status($this->fp);
242 * Get a specified line of data
245 * @return $size bytes of data from the socket, or a PEAR_Error if
250 if (!is_resource($this->fp)) {
251 return $this->raiseError('not connected');
254 return @fgets($this->fp, $size);
258 * Read a specified amount of data. This is guaranteed to return,
259 * and has the added benefit of getting everything in one fread()
260 * chunk; if you know the size of the data you're getting
261 * beforehand, this is definitely the way to go.
263 * @param integer $size The number of bytes to read from the socket.
265 * @return $size bytes of data from the socket, or a PEAR_Error if
270 if (!is_resource($this->fp)) {
271 return $this->raiseError('not connected');
274 return @fread($this->fp, $size);
278 * Write a specified amount of data.
280 * @param string $data Data to write.
281 * @param integer $blocksize Amount of data to write at once.
282 * NULL means all at once.
285 * @return mixed true on success or an error object otherwise
287 function write($data, $blocksize = null)
289 if (!is_resource($this->fp)) {
290 return $this->raiseError('not connected');
293 if (is_null($blocksize) && !OS_WINDOWS) {
294 return fwrite($this->fp, $data);
296 if (is_null($blocksize)) {
301 $size = strlen($data);
302 while ($pos < $size) {
303 $written = @fwrite($this->fp, substr($data, $pos, $blocksize));
304 if ($written === false) {
315 * Write a line of data to the socket, followed by a trailing "\r\n".
318 * @return mixed fputs result, or an error
320 function writeLine($data)
322 if (!is_resource($this->fp)) {
323 return $this->raiseError('not connected');
326 return fwrite($this->fp, $data . "\r\n");
330 * Tests for end-of-file on a socket descriptor.
337 return (is_resource($this->fp) && feof($this->fp));
341 * Reads a byte of data
344 * @return 1 byte of data from the socket, or a PEAR_Error if
349 if (!is_resource($this->fp)) {
350 return $this->raiseError('not connected');
353 return ord(@fread($this->fp, 1));
357 * Reads a word of data
360 * @return 1 word of data from the socket, or a PEAR_Error if
365 if (!is_resource($this->fp)) {
366 return $this->raiseError('not connected');
369 $buf = @fread($this->fp, 2);
370 return (ord($buf[0]) + (ord($buf[1]) << 8));
374 * Reads an int of data
377 * @return integer 1 int of data from the socket, or a PEAR_Error if
382 if (!is_resource($this->fp)) {
383 return $this->raiseError('not connected');
386 $buf = @fread($this->fp, 4);
387 return (ord($buf[0]) + (ord($buf[1]) << 8) +
388 (ord($buf[2]) << 16) + (ord($buf[3]) << 24));
392 * Reads a zero-terminated string of data
395 * @return string, or a PEAR_Error if
398 function readString()
400 if (!is_resource($this->fp)) {
401 return $this->raiseError('not connected');
405 while (($char = @fread($this->fp, 1)) != "\x00") {
412 * Reads an IP Address and returns it in a dot formated string
415 * @return Dot formated string, or a PEAR_Error if
418 function readIPAddress()
420 if (!is_resource($this->fp)) {
421 return $this->raiseError('not connected');
424 $buf = @fread($this->fp, 4);
425 return sprintf("%s.%s.%s.%s", ord($buf[0]), ord($buf[1]),
426 ord($buf[2]), ord($buf[3]));
430 * Read until either the end of the socket or a newline, whichever
431 * comes first. Strips the trailing newline from the returned data.
434 * @return All available data up to a newline, without that
435 * newline, or until the end of the socket, or a PEAR_Error if
440 if (!is_resource($this->fp)) {
441 return $this->raiseError('not connected');
445 $timeout = time() + $this->timeout;
446 while (!feof($this->fp) && (!$this->timeout || time() < $timeout)) {
447 $line .= @fgets($this->fp, $this->lineLength);
448 if (substr($line, -1) == "\n") {
449 return rtrim($line, "\r\n");
456 * Read until the socket closes, or until there is no more data in
457 * the inner PHP buffer. If the inner buffer is empty, in blocking
458 * mode we wait for at least 1 byte of data. Therefore, in
459 * blocking mode, if there is no data at all to be read, this
460 * function will never exit (unless the socket is closed on the
465 * @return string All data until the socket closes, or a PEAR_Error if
470 if (!is_resource($this->fp)) {
471 return $this->raiseError('not connected');
475 while (!feof($this->fp)) {
476 $data .= @fread($this->fp, $this->lineLength);
482 * Runs the equivalent of the select() system call on the socket
483 * with a timeout specified by tv_sec and tv_usec.
485 * @param integer $state Which of read/write/error to check for.
486 * @param integer $tv_sec Number of seconds for timeout.
487 * @param integer $tv_usec Number of microseconds for timeout.
490 * @return False if select fails, integer describing which of read/write/error
491 * are ready, or PEAR_Error if not connected.
493 function select($state, $tv_sec, $tv_usec = 0)
495 if (!is_resource($this->fp)) {
496 return $this->raiseError('not connected');
502 if ($state & NET_SOCKET_READ) {
505 if ($state & NET_SOCKET_WRITE) {
506 $write[] = $this->fp;
508 if ($state & NET_SOCKET_ERROR) {
509 $except[] = $this->fp;
511 if (false === ($sr = stream_select($read, $write, $except, $tv_sec, $tv_usec))) {
517 $result |= NET_SOCKET_READ;
520 $result |= NET_SOCKET_WRITE;
522 if (count($except)) {
523 $result |= NET_SOCKET_ERROR;