forked from extern/egroupware
557 lines
16 KiB
PHP
557 lines
16 KiB
PHP
<?php
|
|
//
|
|
// +----------------------------------------------------------------------+
|
|
// | PHP Version 4 |
|
|
// +----------------------------------------------------------------------+
|
|
// | Copyright (c) 1997-2003 The PHP Group |
|
|
// +----------------------------------------------------------------------+
|
|
// | This source file is subject to version 2.0 of the PHP license, |
|
|
// | that is bundled with this package in the file LICENSE, and is |
|
|
// | available at through the world-wide-web at |
|
|
// | http://www.php.net/license/2_02.txt. |
|
|
// | If you did not receive a copy of the PHP license and are unable to |
|
|
// | obtain it through the world-wide-web, please send a note to |
|
|
// | license@php.net so we can mail you a copy immediately. |
|
|
// +----------------------------------------------------------------------+
|
|
// | Authors: Stig Bakken <ssb@php.net> |
|
|
// | Chuck Hagenbuch <chuck@horde.org> |
|
|
// +----------------------------------------------------------------------+
|
|
//
|
|
// $Id: Socket.php,v 1.28 2006/12/13 21:32:03 cweiske Exp $
|
|
|
|
require_once 'PEAR.php';
|
|
|
|
define('NET_SOCKET_READ', 1);
|
|
define('NET_SOCKET_WRITE', 2);
|
|
define('NET_SOCKET_ERROR', 4);
|
|
|
|
/**
|
|
* Generalized Socket class.
|
|
*
|
|
* @version 1.1
|
|
* @author Stig Bakken <ssb@php.net>
|
|
* @author Chuck Hagenbuch <chuck@horde.org>
|
|
*/
|
|
class Net_Socket extends PEAR {
|
|
|
|
/**
|
|
* Socket file pointer.
|
|
* @var resource $fp
|
|
*/
|
|
var $fp = null;
|
|
|
|
/**
|
|
* Whether the socket is blocking. Defaults to true.
|
|
* @var boolean $blocking
|
|
*/
|
|
var $blocking = true;
|
|
|
|
/**
|
|
* Whether the socket is persistent. Defaults to false.
|
|
* @var boolean $persistent
|
|
*/
|
|
var $persistent = false;
|
|
|
|
/**
|
|
* The IP address to connect to.
|
|
* @var string $addr
|
|
*/
|
|
var $addr = '';
|
|
|
|
/**
|
|
* The port number to connect to.
|
|
* @var integer $port
|
|
*/
|
|
var $port = 0;
|
|
|
|
/**
|
|
* Number of seconds to wait on socket connections before assuming
|
|
* there's no more data. Defaults to no timeout.
|
|
* @var integer $timeout
|
|
*/
|
|
var $timeout = false;
|
|
|
|
/**
|
|
* Number of bytes to read at a time in readLine() and
|
|
* readAll(). Defaults to 2048.
|
|
* @var integer $lineLength
|
|
*/
|
|
var $lineLength = 2048;
|
|
|
|
/**
|
|
* Connect to the specified port. If called when the socket is
|
|
* already connected, it disconnects and connects again.
|
|
*
|
|
* @param string $addr IP address or host name.
|
|
* @param integer $port TCP port number.
|
|
* @param boolean $persistent (optional) Whether the connection is
|
|
* persistent (kept open between requests
|
|
* by the web server).
|
|
* @param integer $timeout (optional) How long to wait for data.
|
|
* @param array $options See options for stream_context_create.
|
|
*
|
|
* @access public
|
|
*
|
|
* @return boolean | PEAR_Error True on success or a PEAR_Error on failure.
|
|
*/
|
|
function connect($addr, $port = 0, $persistent = null, $timeout = null, $options = null)
|
|
{
|
|
if (is_resource($this->fp)) {
|
|
@fclose($this->fp);
|
|
$this->fp = null;
|
|
}
|
|
|
|
if (!$addr) {
|
|
return $this->raiseError('$addr cannot be empty');
|
|
} elseif (strspn($addr, '.0123456789') == strlen($addr) ||
|
|
strstr($addr, '/') !== false) {
|
|
$this->addr = $addr;
|
|
} else {
|
|
$this->addr = @gethostbyname($addr);
|
|
}
|
|
|
|
$this->port = $port % 65536;
|
|
|
|
if ($persistent !== null) {
|
|
$this->persistent = $persistent;
|
|
}
|
|
|
|
if ($timeout !== null) {
|
|
$this->timeout = $timeout;
|
|
}
|
|
|
|
$errno = 0;
|
|
$errstr = '';
|
|
if ($options && function_exists('stream_socket_client')) {
|
|
if ($this->timeout) {
|
|
$timeout = $this->timeout;
|
|
} else {
|
|
$timeout = 0;
|
|
}
|
|
|
|
$context = stream_context_create($options);
|
|
$flags = ($this->persistent === true ? STREAM_CLIENT_CONNECT | STREAM_CLIENT_PERSISTENT : STREAM_CLIENT_CONNECT);
|
|
$fp = @stream_socket_client($this->addr.':'.$this->port, $errno, $errstr, $timeout, $flags, $context);
|
|
} else {
|
|
$openfunc = $this->persistent ? 'pfsockopen' : 'fsockopen';
|
|
if ($this->timeout) {
|
|
$fp = @$openfunc($this->addr, $this->port, $errno, $errstr, $this->timeout);
|
|
} else {
|
|
$fp = @$openfunc($this->addr, $this->port, $errno, $errstr);
|
|
}
|
|
}
|
|
|
|
if (!$fp) {
|
|
return $this->raiseError($errstr, $errno);
|
|
}
|
|
|
|
$this->fp = $fp;
|
|
|
|
return $this->setBlocking($this->blocking);
|
|
}
|
|
|
|
/**
|
|
* Disconnects from the peer, closes the socket.
|
|
*
|
|
* @access public
|
|
* @return mixed true on success or an error object otherwise
|
|
*/
|
|
function disconnect()
|
|
{
|
|
if (!is_resource($this->fp)) {
|
|
return $this->raiseError('not connected');
|
|
}
|
|
|
|
@fclose($this->fp);
|
|
$this->fp = null;
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Find out if the socket is in blocking mode.
|
|
*
|
|
* @access public
|
|
* @return boolean The current blocking mode.
|
|
*/
|
|
function isBlocking()
|
|
{
|
|
return $this->blocking;
|
|
}
|
|
|
|
/**
|
|
* Sets whether the socket connection should be blocking or
|
|
* not. A read call to a non-blocking socket will return immediately
|
|
* if there is no data available, whereas it will block until there
|
|
* is data for blocking sockets.
|
|
*
|
|
* @param boolean $mode True for blocking sockets, false for nonblocking.
|
|
* @access public
|
|
* @return mixed true on success or an error object otherwise
|
|
*/
|
|
function setBlocking($mode)
|
|
{
|
|
if (!is_resource($this->fp)) {
|
|
return $this->raiseError('not connected');
|
|
}
|
|
|
|
$this->blocking = $mode;
|
|
socket_set_blocking($this->fp, $this->blocking);
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Sets the timeout value on socket descriptor,
|
|
* expressed in the sum of seconds and microseconds
|
|
*
|
|
* @param integer $seconds Seconds.
|
|
* @param integer $microseconds Microseconds.
|
|
* @access public
|
|
* @return mixed true on success or an error object otherwise
|
|
*/
|
|
function setTimeout($seconds, $microseconds)
|
|
{
|
|
if (!is_resource($this->fp)) {
|
|
return $this->raiseError('not connected');
|
|
}
|
|
|
|
return socket_set_timeout($this->fp, $seconds, $microseconds);
|
|
}
|
|
|
|
/**
|
|
* Sets the file buffering size on the stream.
|
|
* See php's stream_set_write_buffer for more information.
|
|
*
|
|
* @param integer $size Write buffer size.
|
|
* @access public
|
|
* @return mixed on success or an PEAR_Error object otherwise
|
|
*/
|
|
function setWriteBuffer($size)
|
|
{
|
|
if (!is_resource($this->fp)) {
|
|
return $this->raiseError('not connected');
|
|
}
|
|
|
|
$returned = stream_set_write_buffer($this->fp, $code);
|
|
if ($returned == 0) {
|
|
return true;
|
|
}
|
|
return $this->raiseError('Cannot set write buffer.');
|
|
}
|
|
|
|
/**
|
|
* Returns information about an existing socket resource.
|
|
* Currently returns four entries in the result array:
|
|
*
|
|
* <p>
|
|
* timed_out (bool) - The socket timed out waiting for data<br>
|
|
* blocked (bool) - The socket was blocked<br>
|
|
* eof (bool) - Indicates EOF event<br>
|
|
* unread_bytes (int) - Number of bytes left in the socket buffer<br>
|
|
* </p>
|
|
*
|
|
* @access public
|
|
* @return mixed Array containing information about existing socket resource or an error object otherwise
|
|
*/
|
|
function getStatus()
|
|
{
|
|
if (!is_resource($this->fp)) {
|
|
return $this->raiseError('not connected');
|
|
}
|
|
|
|
return socket_get_status($this->fp);
|
|
}
|
|
|
|
/**
|
|
* Get a specified line of data
|
|
*
|
|
* @access public
|
|
* @return $size bytes of data from the socket, or a PEAR_Error if
|
|
* not connected.
|
|
*/
|
|
function gets($size)
|
|
{
|
|
if (!is_resource($this->fp)) {
|
|
return $this->raiseError('not connected');
|
|
}
|
|
|
|
return @fgets($this->fp, $size);
|
|
}
|
|
|
|
/**
|
|
* Read a specified amount of data. This is guaranteed to return,
|
|
* and has the added benefit of getting everything in one fread()
|
|
* chunk; if you know the size of the data you're getting
|
|
* beforehand, this is definitely the way to go.
|
|
*
|
|
* @param integer $size The number of bytes to read from the socket.
|
|
* @access public
|
|
* @return $size bytes of data from the socket, or a PEAR_Error if
|
|
* not connected.
|
|
*/
|
|
function read($size)
|
|
{
|
|
if (!is_resource($this->fp)) {
|
|
return $this->raiseError('not connected');
|
|
}
|
|
|
|
return @fread($this->fp, $size);
|
|
}
|
|
|
|
/**
|
|
* Write a specified amount of data.
|
|
*
|
|
* @param string $data Data to write.
|
|
* @param integer $blocksize Amount of data to write at once.
|
|
* NULL means all at once.
|
|
*
|
|
* @access public
|
|
* @return mixed true on success or an error object otherwise
|
|
*/
|
|
function write($data, $blocksize = null)
|
|
{
|
|
if (!is_resource($this->fp)) {
|
|
return $this->raiseError('not connected');
|
|
}
|
|
|
|
if (is_null($blocksize) && !OS_WINDOWS) {
|
|
return fwrite($this->fp, $data);
|
|
} else {
|
|
if (is_null($blocksize)) {
|
|
$blocksize = 1024;
|
|
}
|
|
|
|
$pos = 0;
|
|
$size = strlen($data);
|
|
while ($pos < $size) {
|
|
$written = @fwrite($this->fp, substr($data, $pos, $blocksize));
|
|
if ($written === false) {
|
|
return false;
|
|
}
|
|
$pos += $written;
|
|
}
|
|
|
|
return $pos;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Write a line of data to the socket, followed by a trailing "\r\n".
|
|
*
|
|
* @access public
|
|
* @return mixed fputs result, or an error
|
|
*/
|
|
function writeLine($data)
|
|
{
|
|
if (!is_resource($this->fp)) {
|
|
return $this->raiseError('not connected');
|
|
}
|
|
|
|
return fwrite($this->fp, $data . "\r\n");
|
|
}
|
|
|
|
/**
|
|
* Tests for end-of-file on a socket descriptor.
|
|
*
|
|
* Also returns true if the socket is disconnected.
|
|
*
|
|
* @access public
|
|
* @return bool
|
|
*/
|
|
function eof()
|
|
{
|
|
return (!is_resource($this->fp) || feof($this->fp));
|
|
}
|
|
|
|
/**
|
|
* Reads a byte of data
|
|
*
|
|
* @access public
|
|
* @return 1 byte of data from the socket, or a PEAR_Error if
|
|
* not connected.
|
|
*/
|
|
function readByte()
|
|
{
|
|
if (!is_resource($this->fp)) {
|
|
return $this->raiseError('not connected');
|
|
}
|
|
|
|
return ord(@fread($this->fp, 1));
|
|
}
|
|
|
|
/**
|
|
* Reads a word of data
|
|
*
|
|
* @access public
|
|
* @return 1 word of data from the socket, or a PEAR_Error if
|
|
* not connected.
|
|
*/
|
|
function readWord()
|
|
{
|
|
if (!is_resource($this->fp)) {
|
|
return $this->raiseError('not connected');
|
|
}
|
|
|
|
$buf = @fread($this->fp, 2);
|
|
return (ord($buf[0]) + (ord($buf[1]) << 8));
|
|
}
|
|
|
|
/**
|
|
* Reads an int of data
|
|
*
|
|
* @access public
|
|
* @return integer 1 int of data from the socket, or a PEAR_Error if
|
|
* not connected.
|
|
*/
|
|
function readInt()
|
|
{
|
|
if (!is_resource($this->fp)) {
|
|
return $this->raiseError('not connected');
|
|
}
|
|
|
|
$buf = @fread($this->fp, 4);
|
|
return (ord($buf[0]) + (ord($buf[1]) << 8) +
|
|
(ord($buf[2]) << 16) + (ord($buf[3]) << 24));
|
|
}
|
|
|
|
/**
|
|
* Reads a zero-terminated string of data
|
|
*
|
|
* @access public
|
|
* @return string, or a PEAR_Error if
|
|
* not connected.
|
|
*/
|
|
function readString()
|
|
{
|
|
if (!is_resource($this->fp)) {
|
|
return $this->raiseError('not connected');
|
|
}
|
|
|
|
$string = '';
|
|
while (($char = @fread($this->fp, 1)) != "\x00") {
|
|
$string .= $char;
|
|
}
|
|
return $string;
|
|
}
|
|
|
|
/**
|
|
* Reads an IP Address and returns it in a dot formated string
|
|
*
|
|
* @access public
|
|
* @return Dot formated string, or a PEAR_Error if
|
|
* not connected.
|
|
*/
|
|
function readIPAddress()
|
|
{
|
|
if (!is_resource($this->fp)) {
|
|
return $this->raiseError('not connected');
|
|
}
|
|
|
|
$buf = @fread($this->fp, 4);
|
|
return sprintf("%s.%s.%s.%s", ord($buf[0]), ord($buf[1]),
|
|
ord($buf[2]), ord($buf[3]));
|
|
}
|
|
|
|
/**
|
|
* Read until either the end of the socket or a newline, whichever
|
|
* comes first. Strips the trailing newline from the returned data.
|
|
*
|
|
* @access public
|
|
* @return All available data up to a newline, without that
|
|
* newline, or until the end of the socket, or a PEAR_Error if
|
|
* not connected.
|
|
*/
|
|
function readLine()
|
|
{
|
|
if (!is_resource($this->fp)) {
|
|
return $this->raiseError('not connected');
|
|
}
|
|
|
|
ob_start();
|
|
$line = '';
|
|
$timeout = time() + $this->timeout;
|
|
while (!feof($this->fp) && (!$this->timeout || time() < $timeout)) {
|
|
$line .= fgets($this->fp, $this->lineLength);
|
|
if (substr($line, -1) == "\n") {
|
|
ob_end_clean();
|
|
return rtrim($line, "\r\n");
|
|
}
|
|
}
|
|
ob_end_clean();
|
|
return $line;
|
|
}
|
|
|
|
/**
|
|
* Read until the socket closes, or until there is no more data in
|
|
* the inner PHP buffer. If the inner buffer is empty, in blocking
|
|
* mode we wait for at least 1 byte of data. Therefore, in
|
|
* blocking mode, if there is no data at all to be read, this
|
|
* function will never exit (unless the socket is closed on the
|
|
* remote end).
|
|
*
|
|
* @access public
|
|
*
|
|
* @return string All data until the socket closes, or a PEAR_Error if
|
|
* not connected.
|
|
*/
|
|
function readAll()
|
|
{
|
|
if (!is_resource($this->fp)) {
|
|
return $this->raiseError('not connected');
|
|
}
|
|
|
|
$data = '';
|
|
while (!feof($this->fp)) {
|
|
$data .= @fread($this->fp, $this->lineLength);
|
|
}
|
|
return $data;
|
|
}
|
|
|
|
/**
|
|
* Runs the equivalent of the select() system call on the socket
|
|
* with a timeout specified by tv_sec and tv_usec.
|
|
*
|
|
* @param integer $state Which of read/write/error to check for.
|
|
* @param integer $tv_sec Number of seconds for timeout.
|
|
* @param integer $tv_usec Number of microseconds for timeout.
|
|
*
|
|
* @access public
|
|
* @return False if select fails, integer describing which of read/write/error
|
|
* are ready, or PEAR_Error if not connected.
|
|
*/
|
|
function select($state, $tv_sec, $tv_usec = 0)
|
|
{
|
|
if (!is_resource($this->fp)) {
|
|
return $this->raiseError('not connected');
|
|
}
|
|
|
|
$read = null;
|
|
$write = null;
|
|
$except = null;
|
|
if ($state & NET_SOCKET_READ) {
|
|
$read[] = $this->fp;
|
|
}
|
|
if ($state & NET_SOCKET_WRITE) {
|
|
$write[] = $this->fp;
|
|
}
|
|
if ($state & NET_SOCKET_ERROR) {
|
|
$except[] = $this->fp;
|
|
}
|
|
if (false === ($sr = stream_select($read, $write, $except, $tv_sec, $tv_usec))) {
|
|
return false;
|
|
}
|
|
|
|
$result = 0;
|
|
if (count($read)) {
|
|
$result |= NET_SOCKET_READ;
|
|
}
|
|
if (count($write)) {
|
|
$result |= NET_SOCKET_WRITE;
|
|
}
|
|
if (count($except)) {
|
|
$result |= NET_SOCKET_ERROR;
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
}
|