/lib/ZendGdata-1.8.4PL1/library/Zend/Http/Client/Adapter/Socket.php
PHP | 353 lines | 192 code | 43 blank | 118 comment | 65 complexity | 4a8d69f3e4e567f660a6ac09889c050f MD5 | raw file
- <?
- /**
- * 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 13013 2008-12-04 12:04:24Z yoshida@zend.co.jp $
- * @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 'Zend/Uri/Http.php';
- require_once '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(
- 'persistent' => false,
- '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($config)) {
- require_once 'Zend/Http/Client/Adapter/Exception.php';
- throw new Zend_Http_Client_Adapter_Exception(
- '$concig 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',
- $this->config['sslcert'])) {
- require_once 'Zend/Http/Client/Adapter/Exception.php';
- throw new Zend_Http_Client_Adapter_Exception('Unable to set sslcert option');
- }
- }
- if ($this->config['sslpassphrase'] !== null) {
- if (! stream_context_set_option($context, 'ssl', 'passphrase',
- $this->config['sslpassphrase'])) {
- require_once 'Zend/Http/Client/Adapter/Exception.php';
- throw new Zend_Http_Client_Adapter_Exception('Unable to set sslpassphrase option');
- }
- }
- }
- $flags = STREAM_CLIENT_CONNECT;
- if ($this->config['persistent']) $flags |= STREAM_CLIENT_PERSISTENT;
- $this->socket = @stream_socket_client($host . ':' . $port,
- $errno,
- $errstr,
- (int) $this->config['timeout'],
- $flags,
- $context);
- if (! $this->socket) {
- $this->close();
- require_once '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 '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 '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 '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 '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)) !== false) {
- $gotStatus = $gotStatus || (strpos($line, 'HTTP') !== false);
- if ($gotStatus) {
- $response .= $line;
- if (rtrim($line) === '') break;
- }
- }
- $statusCode = Zend_Http_Response::extractCode($response);
- // Handle 100 and 101 responses internally by restarting the read again
- if ($statusCode == 100 || $statusCode == 101) return $this->read();
- /**
- * Responses to HEAD requests and 204 or 304 responses are not expected
- * to have a body - stop reading here
- */
- if ($statusCode == 304 || $statusCode == 204 ||
- $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 we got a 'transfer-encoding: chunked' header
- if (isset($headers['transfer-encoding'])) {
- if ($headers['transfer-encoding'] == 'chunked') {
- do {
- $line = @fgets($this->socket);
- $chunk = $line;
- // Figure out the next chunk size
- $chunksize = trim($line);
- if (! ctype_xdigit($chunksize)) {
- $this->close();
- require_once 'Zend/Http/Client/Adapter/Exception.php';
- throw new Zend_Http_Client_Adapter_Exception('Invalid chunk size "' .
- $chunksize . '" unable to read chunked body');
- }
- // Convert the hexadecimal value to plain integer
- $chunksize = hexdec($chunksize);
- // Read chunk
- $left_to_read = $chunksize;
- while ($left_to_read > 0) {
- $line = @fread($this->socket, $left_to_read);
- if ($line === false || strlen($line) === 0)
- {
- break;
- } else {
- $chunk .= $line;
- $left_to_read -= strlen($line);
- }
- // Break if the connection ended prematurely
- if (feof($this->socket)) break;
- }
- $chunk .= @fgets($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, $left_to_read);
- if ($chunk === false || strlen($chunk) === 0)
- {
- break;
- } else {
- $left_to_read -= strlen($chunk);
- $response .= $chunk;
- }
- // Break if the connection ended prematurely
- if (feof($this->socket)) break;
- }
- // Fallback: just read the response until EOF
- } else {
- do {
- $buff = @fread($this->socket, 8192);
- if ($buff === false || strlen($buff) === 0)
- {
- break;
- } else {
- $response .= $buff;
- }
- } while (feof($this->socket) === false);
- $this->close();
- }
- // Close the connection if requested to do so by the server
- if (isset($headers['connection']) && $headers['connection'] == 'close') {
- $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
- *
- * If we are in persistent TCP mode, will not close the connection
- *
- */
- public function __destruct()
- {
- if (! $this->config['persistent']) {
- if ($this->socket) $this->close();
- }
- }
- }