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<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Http
* @subpackage Client_Adapter
* @version $Id: Socket.php 8064 2008-02-16 10:58:39Z thomas $
* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
require_once 'external/Zend/Uri/Http.php';
require_once 'external/Zend/Http/Client/Adapter/Interface.php';
/**
* A sockets based (stream_socket_client) adapter class for Zend_Http_Client. Can be used
* on almost every PHP environment, and does not require any special extensions.
*
* @category Zend
* @package Zend_Http
* @subpackage Client_Adapter
* @copyright Copyright (c) 2005-2008 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Http_Client_Adapter_Socket implements Zend_Http_Client_Adapter_Interface {
/**
* The socket for server connection
*
* @var resource|null
*/
protected $socket = null;
/**
* What host/port are we connected to?
*
* @var array
*/
protected $connected_to = array(null, null);
/**
* Parameters array
*
* @var array
*/
protected $config = array('ssltransport' => 'ssl', 'sslcert' => null, 'sslpassphrase' => null);
/**
* Request method - will be set by write() and might be used by read()
*
* @var string
*/
protected $method = null;
/**
* Adapter constructor, currently empty. Config is set using setConfig()
*
*/
public function __construct() {}
/**
* Set the configuration array for the adapter
*
* @param array $config
*/
public function setConfig($config = array()) {
if (! is_array($config)) {
require_once 'external/Zend/Http/Client/Adapter/Exception.php';
throw new Zend_Http_Client_Adapter_Exception('$config expects an array, ' . gettype($config) . ' recieved.');
}
foreach ($config as $k => $v) {
$this->config[strtolower($k)] = $v;
}
}
/**
* Connect to the remote server
*
* @param string $host
* @param int $port
* @param boolean $secure
* @param int $timeout
*/
public function connect($host, $port = 80, $secure = false) {
// If the URI should be accessed via SSL, prepend the Hostname with ssl://
$host = ($secure ? $this->config['ssltransport'] : 'tcp') . '://' . $host;
// If we are connected to the wrong host, disconnect first
if (($this->connected_to[0] != $host || $this->connected_to[1] != $port)) {
if (is_resource($this->socket)) $this->close();
}
// Now, if we are not connected, connect
if (! is_resource($this->socket) || ! $this->config['keepalive']) {
$context = stream_context_create();
if ($secure) {
if ($this->config['sslcert'] !== null) {
if (! stream_context_set_option($context, 'ssl', 'local_cert', $this->config['sslcert'])) {
require_once 'external/Zend/Http/Client/Adapter/Exception.php';
throw new Zend_Http_Client_Adapter_Exception('Unable to set sslcert option');
}
}
if ($this->config['sslpassphrase'] !== null) {
if (! stream_context_set_option($context, 'ssl', 'passphrase', $this->config['sslpassphrase'])) {
require_once 'external/Zend/Http/Client/Adapter/Exception.php';
throw new Zend_Http_Client_Adapter_Exception('Unable to set sslpassphrase option');
}
}
}
$this->socket = @stream_socket_client($host . ':' . $port, $errno, $errstr, (int)$this->config['timeout'], STREAM_CLIENT_CONNECT, $context);
if (! $this->socket) {
$this->close();
require_once 'external/Zend/Http/Client/Adapter/Exception.php';
throw new Zend_Http_Client_Adapter_Exception('Unable to Connect to ' . $host . ':' . $port . '. Error #' . $errno . ': ' . $errstr);
}
// Set the stream timeout
if (! stream_set_timeout($this->socket, (int)$this->config['timeout'])) {
require_once 'external/Zend/Http/Client/Adapter/Exception.php';
throw new Zend_Http_Client_Adapter_Exception('Unable to set the connection timeout');
}
// Update connected_to
$this->connected_to = array($host, $port);
}
}
/**
* Send request to the remote server
*
* @param string $method
* @param Zend_Uri_Http $uri
* @param string $http_ver
* @param array $headers
* @param string $body
* @return string Request as string
*/
public function write($method, $uri, $http_ver = '1.1', $headers = array(), $body = '') {
// Make sure we're properly connected
if (! $this->socket) {
require_once 'external/Zend/Http/Client/Adapter/Exception.php';
throw new Zend_Http_Client_Adapter_Exception('Trying to write but we are not connected');
}
$host = $uri->getHost();
$host = (strtolower($uri->getScheme()) == 'https' ? $this->config['ssltransport'] : 'tcp') . '://' . $host;
if ($this->connected_to[0] != $host || $this->connected_to[1] != $uri->getPort()) {
require_once 'external/Zend/Http/Client/Adapter/Exception.php';
throw new Zend_Http_Client_Adapter_Exception('Trying to write but we are connected to the wrong host');
}
// Save request method for later
$this->method = $method;
// Build request headers
$path = $uri->getPath();
if ($uri->getQuery()) $path .= '?' . $uri->getQuery();
$request = "{$method} {$path} HTTP/{$http_ver}\r\n";
foreach ($headers as $k => $v) {
if (is_string($k)) $v = ucfirst($k) . ": $v";
$request .= "$v\r\n";
}
// Add the request body
$request .= "\r\n" . $body;
// Send the request
if (! @fwrite($this->socket, $request)) {
require_once 'external/Zend/Http/Client/Adapter/Exception.php';
throw new Zend_Http_Client_Adapter_Exception('Error writing request to server');
}
return $request;
}
/**
* Read response from server
*
* @return string
*/
public function read() {
// First, read headers only
$response = '';
$gotStatus = false;
while ($line = @fgets($this->socket)) {
$gotStatus = $gotStatus || (strpos($line, 'HTTP') !== false);
if ($gotStatus) {
$response .= $line;
if (! chop($line)) break;
}
}
// Handle 100 and 101 responses internally by restarting the read again
if (Zend_Http_Response::extractCode($response) == 100 || Zend_Http_Response::extractCode($response) == 101) return $this->read();
// If this was a HEAD request, return after reading the header (no need to read body)
if ($this->method == Zend_Http_Client::HEAD) return $response;
// Check headers to see what kind of connection / transfer encoding we have
$headers = Zend_Http_Response::extractHeaders($response);
// if the connection is set to close, just read until socket closes
if (isset($headers['connection']) && $headers['connection'] == 'close') {
while ($buff = @fread($this->socket, 8192)) {
$response .= $buff;
}
$this->close();
// Else, if we got a transfer-encoding header (chunked body)
} elseif (isset($headers['transfer-encoding'])) {
if ($headers['transfer-encoding'] == 'chunked') {
do {
$chunk = '';
$line = @fgets($this->socket);
$chunk .= $line;
$hexchunksize = ltrim(chop($line), '0');
$hexchunksize = strlen($hexchunksize) ? strtolower($hexchunksize) : 0;
$chunksize = hexdec(chop($line));
if (dechex($chunksize) != $hexchunksize) {
@fclose($this->socket);
require_once 'external/Zend/Http/Client/Adapter/Exception.php';
throw new Zend_Http_Client_Adapter_Exception('Invalid chunk size "' . $hexchunksize . '" unable to read chunked body');
}
$left_to_read = $chunksize;
while ($left_to_read > 0) {
$line = @fread($this->socket, $left_to_read);
$chunk .= $line;
$left_to_read -= strlen($line);
}
$chunk .= @fgets($this->socket);
$response .= $chunk;
} while ($chunksize > 0);
} else {
throw new Zend_Http_Client_Adapter_Exception('Cannot handle "' . $headers['transfer-encoding'] . '" transfer encoding');
}
// Else, if we got the content-length header, read this number of bytes
} elseif (isset($headers['content-length'])) {
$left_to_read = $headers['content-length'];
$chunk = '';
while ($left_to_read > 0) {
$chunk = @fread($this->socket, $left_to_read);
$left_to_read -= strlen($chunk);
$response .= $chunk;
}
// Fallback: just read the response (should not happen)
} else {
while ($buff = @fread($this->socket, 8192)) {
$response .= $buff;
}
$this->close();
}
return $response;
}
/**
* Close the connection to the server
*
*/
public function close() {
if (is_resource($this->socket)) @fclose($this->socket);
$this->socket = null;
$this->connected_to = array(null, null);
}
/**
* Destructor: make sure the socket is disconnected
*
*/
public function __destruct() {
if ($this->socket) $this->close();
}
}
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