fa37967858
Caching support will be added in future work after unit tests have been added. * extlib: add PEAR HTTP_Request2 0.4.1 alpha * extlib: update PEAR Net_URL2 to 0.3.0 beta for HTTP_Request2 compatibility * moved direct usage of CURL and file_get_contents to HTTPClient class, excluding external-sourced libraries Note some plugins haven't been tested yet.
971 lines
37 KiB
PHP
971 lines
37 KiB
PHP
<?php
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/**
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* Socket-based adapter for HTTP_Request2
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*
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* PHP version 5
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*
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* LICENSE:
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*
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* Copyright (c) 2008, 2009, Alexey Borzov <avb@php.net>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * The names of the authors may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* @category HTTP
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* @package HTTP_Request2
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* @author Alexey Borzov <avb@php.net>
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* @license http://opensource.org/licenses/bsd-license.php New BSD License
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* @version CVS: $Id: Socket.php 279760 2009-05-03 10:46:42Z avb $
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* @link http://pear.php.net/package/HTTP_Request2
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*/
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/**
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* Base class for HTTP_Request2 adapters
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*/
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require_once 'HTTP/Request2/Adapter.php';
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/**
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* Socket-based adapter for HTTP_Request2
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*
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* This adapter uses only PHP sockets and will work on almost any PHP
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* environment. Code is based on original HTTP_Request PEAR package.
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*
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* @category HTTP
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* @package HTTP_Request2
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* @author Alexey Borzov <avb@php.net>
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* @version Release: 0.4.1
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*/
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class HTTP_Request2_Adapter_Socket extends HTTP_Request2_Adapter
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{
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/**
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* Regular expression for 'token' rule from RFC 2616
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*/
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const REGEXP_TOKEN = '[^\x00-\x1f\x7f-\xff()<>@,;:\\\\"/\[\]?={}\s]+';
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/**
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* Regular expression for 'quoted-string' rule from RFC 2616
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*/
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const REGEXP_QUOTED_STRING = '"(?:\\\\.|[^\\\\"])*"';
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/**
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* Connected sockets, needed for Keep-Alive support
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* @var array
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* @see connect()
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*/
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protected static $sockets = array();
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/**
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* Data for digest authentication scheme
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*
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* The keys for the array are URL prefixes.
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*
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* The values are associative arrays with data (realm, nonce, nonce-count,
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* opaque...) needed for digest authentication. Stored here to prevent making
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* duplicate requests to digest-protected resources after we have already
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* received the challenge.
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*
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* @var array
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*/
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protected static $challenges = array();
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/**
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* Connected socket
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* @var resource
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* @see connect()
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*/
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protected $socket;
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/**
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* Challenge used for server digest authentication
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* @var array
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*/
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protected $serverChallenge;
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/**
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* Challenge used for proxy digest authentication
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* @var array
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*/
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protected $proxyChallenge;
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/**
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* Global timeout, exception will be raised if request continues past this time
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* @var integer
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*/
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protected $timeout = null;
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/**
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* Remaining length of the current chunk, when reading chunked response
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* @var integer
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* @see readChunked()
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*/
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protected $chunkLength = 0;
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/**
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* Sends request to the remote server and returns its response
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*
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* @param HTTP_Request2
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* @return HTTP_Request2_Response
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* @throws HTTP_Request2_Exception
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*/
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public function sendRequest(HTTP_Request2 $request)
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{
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$this->request = $request;
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$keepAlive = $this->connect();
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$headers = $this->prepareHeaders();
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// Use global request timeout if given, see feature requests #5735, #8964
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if ($timeout = $request->getConfig('timeout')) {
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$this->timeout = time() + $timeout;
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} else {
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$this->timeout = null;
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}
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try {
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if (false === @fwrite($this->socket, $headers, strlen($headers))) {
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throw new HTTP_Request2_Exception('Error writing request');
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}
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// provide request headers to the observer, see request #7633
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$this->request->setLastEvent('sentHeaders', $headers);
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$this->writeBody();
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if ($this->timeout && time() > $this->timeout) {
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throw new HTTP_Request2_Exception(
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'Request timed out after ' .
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$request->getConfig('timeout') . ' second(s)'
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);
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}
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$response = $this->readResponse();
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if (!$this->canKeepAlive($keepAlive, $response)) {
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$this->disconnect();
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}
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if ($this->shouldUseProxyDigestAuth($response)) {
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return $this->sendRequest($request);
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}
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if ($this->shouldUseServerDigestAuth($response)) {
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return $this->sendRequest($request);
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}
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if ($authInfo = $response->getHeader('authentication-info')) {
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$this->updateChallenge($this->serverChallenge, $authInfo);
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}
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if ($proxyInfo = $response->getHeader('proxy-authentication-info')) {
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$this->updateChallenge($this->proxyChallenge, $proxyInfo);
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}
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} catch (Exception $e) {
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$this->disconnect();
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throw $e;
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}
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return $response;
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}
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/**
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* Connects to the remote server
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*
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* @return bool whether the connection can be persistent
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* @throws HTTP_Request2_Exception
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*/
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protected function connect()
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{
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$secure = 0 == strcasecmp($this->request->getUrl()->getScheme(), 'https');
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$tunnel = HTTP_Request2::METHOD_CONNECT == $this->request->getMethod();
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$headers = $this->request->getHeaders();
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$reqHost = $this->request->getUrl()->getHost();
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if (!($reqPort = $this->request->getUrl()->getPort())) {
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$reqPort = $secure? 443: 80;
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}
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if ($host = $this->request->getConfig('proxy_host')) {
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if (!($port = $this->request->getConfig('proxy_port'))) {
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throw new HTTP_Request2_Exception('Proxy port not provided');
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}
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$proxy = true;
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} else {
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$host = $reqHost;
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$port = $reqPort;
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$proxy = false;
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}
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if ($tunnel && !$proxy) {
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throw new HTTP_Request2_Exception(
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"Trying to perform CONNECT request without proxy"
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);
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}
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if ($secure && !in_array('ssl', stream_get_transports())) {
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throw new HTTP_Request2_Exception(
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'Need OpenSSL support for https:// requests'
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);
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}
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// RFC 2068, section 19.7.1: A client MUST NOT send the Keep-Alive
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// connection token to a proxy server...
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if ($proxy && !$secure &&
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!empty($headers['connection']) && 'Keep-Alive' == $headers['connection']
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) {
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$this->request->setHeader('connection');
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}
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$keepAlive = ('1.1' == $this->request->getConfig('protocol_version') &&
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empty($headers['connection'])) ||
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(!empty($headers['connection']) &&
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'Keep-Alive' == $headers['connection']);
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$host = ((!$secure || $proxy)? 'tcp://': 'ssl://') . $host;
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$options = array();
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if ($secure || $tunnel) {
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foreach ($this->request->getConfig() as $name => $value) {
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if ('ssl_' == substr($name, 0, 4) && null !== $value) {
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if ('ssl_verify_host' == $name) {
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if ($value) {
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$options['CN_match'] = $reqHost;
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}
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} else {
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$options[substr($name, 4)] = $value;
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}
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}
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}
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ksort($options);
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}
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// Changing SSL context options after connection is established does *not*
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// work, we need a new connection if options change
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$remote = $host . ':' . $port;
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$socketKey = $remote . (($secure && $proxy)? "->{$reqHost}:{$reqPort}": '') .
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(empty($options)? '': ':' . serialize($options));
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unset($this->socket);
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// We use persistent connections and have a connected socket?
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// Ensure that the socket is still connected, see bug #16149
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if ($keepAlive && !empty(self::$sockets[$socketKey]) &&
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!feof(self::$sockets[$socketKey])
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) {
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$this->socket =& self::$sockets[$socketKey];
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} elseif ($secure && $proxy && !$tunnel) {
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$this->establishTunnel();
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$this->request->setLastEvent(
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'connect', "ssl://{$reqHost}:{$reqPort} via {$host}:{$port}"
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);
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self::$sockets[$socketKey] =& $this->socket;
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} else {
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// Set SSL context options if doing HTTPS request or creating a tunnel
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$context = stream_context_create();
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foreach ($options as $name => $value) {
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if (!stream_context_set_option($context, 'ssl', $name, $value)) {
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throw new HTTP_Request2_Exception(
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"Error setting SSL context option '{$name}'"
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);
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}
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}
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$this->socket = @stream_socket_client(
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$remote, $errno, $errstr,
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$this->request->getConfig('connect_timeout'),
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STREAM_CLIENT_CONNECT, $context
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);
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if (!$this->socket) {
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throw new HTTP_Request2_Exception(
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"Unable to connect to {$remote}. Error #{$errno}: {$errstr}"
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);
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}
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$this->request->setLastEvent('connect', $remote);
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self::$sockets[$socketKey] =& $this->socket;
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}
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return $keepAlive;
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}
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/**
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* Establishes a tunnel to a secure remote server via HTTP CONNECT request
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*
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* This method will fail if 'ssl_verify_peer' is enabled. Probably because PHP
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* sees that we are connected to a proxy server (duh!) rather than the server
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* that presents its certificate.
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*
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* @link http://tools.ietf.org/html/rfc2817#section-5.2
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* @throws HTTP_Request2_Exception
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*/
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protected function establishTunnel()
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{
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$donor = new self;
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$connect = new HTTP_Request2(
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$this->request->getUrl(), HTTP_Request2::METHOD_CONNECT,
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array_merge($this->request->getConfig(),
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array('adapter' => $donor))
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);
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$response = $connect->send();
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// Need any successful (2XX) response
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if (200 > $response->getStatus() || 300 <= $response->getStatus()) {
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throw new HTTP_Request2_Exception(
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'Failed to connect via HTTPS proxy. Proxy response: ' .
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$response->getStatus() . ' ' . $response->getReasonPhrase()
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);
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}
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$this->socket = $donor->socket;
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$modes = array(
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STREAM_CRYPTO_METHOD_TLS_CLIENT,
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STREAM_CRYPTO_METHOD_SSLv3_CLIENT,
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STREAM_CRYPTO_METHOD_SSLv23_CLIENT,
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STREAM_CRYPTO_METHOD_SSLv2_CLIENT
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);
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foreach ($modes as $mode) {
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if (stream_socket_enable_crypto($this->socket, true, $mode)) {
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return;
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}
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}
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throw new HTTP_Request2_Exception(
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'Failed to enable secure connection when connecting through proxy'
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);
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}
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/**
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* Checks whether current connection may be reused or should be closed
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*
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* @param boolean whether connection could be persistent
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* in the first place
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* @param HTTP_Request2_Response response object to check
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* @return boolean
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*/
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protected function canKeepAlive($requestKeepAlive, HTTP_Request2_Response $response)
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{
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// Do not close socket on successful CONNECT request
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if (HTTP_Request2::METHOD_CONNECT == $this->request->getMethod() &&
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200 <= $response->getStatus() && 300 > $response->getStatus()
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) {
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return true;
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}
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$lengthKnown = 'chunked' == strtolower($response->getHeader('transfer-encoding')) ||
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null !== $response->getHeader('content-length');
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$persistent = 'keep-alive' == strtolower($response->getHeader('connection')) ||
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(null === $response->getHeader('connection') &&
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'1.1' == $response->getVersion());
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return $requestKeepAlive && $lengthKnown && $persistent;
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}
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/**
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* Disconnects from the remote server
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*/
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protected function disconnect()
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{
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if (is_resource($this->socket)) {
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fclose($this->socket);
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$this->socket = null;
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$this->request->setLastEvent('disconnect');
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}
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}
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/**
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* Checks whether another request should be performed with server digest auth
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*
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* Several conditions should be satisfied for it to return true:
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* - response status should be 401
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* - auth credentials should be set in the request object
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* - response should contain WWW-Authenticate header with digest challenge
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* - there is either no challenge stored for this URL or new challenge
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* contains stale=true parameter (in other case we probably just failed
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* due to invalid username / password)
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*
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* The method stores challenge values in $challenges static property
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*
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* @param HTTP_Request2_Response response to check
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* @return boolean whether another request should be performed
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* @throws HTTP_Request2_Exception in case of unsupported challenge parameters
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*/
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protected function shouldUseServerDigestAuth(HTTP_Request2_Response $response)
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{
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// no sense repeating a request if we don't have credentials
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if (401 != $response->getStatus() || !$this->request->getAuth()) {
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return false;
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}
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if (!$challenge = $this->parseDigestChallenge($response->getHeader('www-authenticate'))) {
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return false;
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}
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$url = $this->request->getUrl();
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$scheme = $url->getScheme();
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$host = $scheme . '://' . $url->getHost();
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if ($port = $url->getPort()) {
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if ((0 == strcasecmp($scheme, 'http') && 80 != $port) ||
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(0 == strcasecmp($scheme, 'https') && 443 != $port)
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) {
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$host .= ':' . $port;
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}
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}
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if (!empty($challenge['domain'])) {
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$prefixes = array();
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foreach (preg_split('/\\s+/', $challenge['domain']) as $prefix) {
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// don't bother with different servers
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if ('/' == substr($prefix, 0, 1)) {
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$prefixes[] = $host . $prefix;
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}
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}
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}
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if (empty($prefixes)) {
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$prefixes = array($host . '/');
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}
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$ret = true;
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foreach ($prefixes as $prefix) {
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if (!empty(self::$challenges[$prefix]) &&
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(empty($challenge['stale']) || strcasecmp('true', $challenge['stale']))
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) {
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// probably credentials are invalid
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$ret = false;
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}
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self::$challenges[$prefix] =& $challenge;
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}
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return $ret;
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}
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|
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/**
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* Checks whether another request should be performed with proxy digest auth
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*
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* Several conditions should be satisfied for it to return true:
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* - response status should be 407
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* - proxy auth credentials should be set in the request object
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* - response should contain Proxy-Authenticate header with digest challenge
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* - there is either no challenge stored for this proxy or new challenge
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* contains stale=true parameter (in other case we probably just failed
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* due to invalid username / password)
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*
|
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* The method stores challenge values in $challenges static property
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*
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* @param HTTP_Request2_Response response to check
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* @return boolean whether another request should be performed
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* @throws HTTP_Request2_Exception in case of unsupported challenge parameters
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*/
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protected function shouldUseProxyDigestAuth(HTTP_Request2_Response $response)
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{
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if (407 != $response->getStatus() || !$this->request->getConfig('proxy_user')) {
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return false;
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}
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if (!($challenge = $this->parseDigestChallenge($response->getHeader('proxy-authenticate')))) {
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return false;
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}
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$key = 'proxy://' . $this->request->getConfig('proxy_host') .
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':' . $this->request->getConfig('proxy_port');
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if (!empty(self::$challenges[$key]) &&
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(empty($challenge['stale']) || strcasecmp('true', $challenge['stale']))
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) {
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$ret = false;
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} else {
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$ret = true;
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}
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self::$challenges[$key] = $challenge;
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return $ret;
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}
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|
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/**
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* Extracts digest method challenge from (WWW|Proxy)-Authenticate header value
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*
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* There is a problem with implementation of RFC 2617: several of the parameters
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* here are defined as quoted-string and thus may contain backslash escaped
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* double quotes (RFC 2616, section 2.2). However, RFC 2617 defines unq(X) as
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* just value of quoted-string X without surrounding quotes, it doesn't speak
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* about removing backslash escaping.
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*
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* Now realm parameter is user-defined and human-readable, strange things
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* happen when it contains quotes:
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* - Apache allows quotes in realm, but apparently uses realm value without
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* backslashes for digest computation
|
|
* - Squid allows (manually escaped) quotes there, but it is impossible to
|
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* authorize with either escaped or unescaped quotes used in digest,
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|
* probably it can't parse the response (?)
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* - Both IE and Firefox display realm value with backslashes in
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* the password popup and apparently use the same value for digest
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*
|
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* HTTP_Request2 follows IE and Firefox (and hopefully RFC 2617) in
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* quoted-string handling, unfortunately that means failure to authorize
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* sometimes
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*
|
|
* @param string value of WWW-Authenticate or Proxy-Authenticate header
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|
* @return mixed associative array with challenge parameters, false if
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* no challenge is present in header value
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|
* @throws HTTP_Request2_Exception in case of unsupported challenge parameters
|
|
*/
|
|
protected function parseDigestChallenge($headerValue)
|
|
{
|
|
$authParam = '(' . self::REGEXP_TOKEN . ')\\s*=\\s*(' .
|
|
self::REGEXP_TOKEN . '|' . self::REGEXP_QUOTED_STRING . ')';
|
|
$challenge = "!(?<=^|\\s|,)Digest ({$authParam}\\s*(,\\s*|$))+!";
|
|
if (!preg_match($challenge, $headerValue, $matches)) {
|
|
return false;
|
|
}
|
|
|
|
preg_match_all('!' . $authParam . '!', $matches[0], $params);
|
|
$paramsAry = array();
|
|
$knownParams = array('realm', 'domain', 'nonce', 'opaque', 'stale',
|
|
'algorithm', 'qop');
|
|
for ($i = 0; $i < count($params[0]); $i++) {
|
|
// section 3.2.1: Any unrecognized directive MUST be ignored.
|
|
if (in_array($params[1][$i], $knownParams)) {
|
|
if ('"' == substr($params[2][$i], 0, 1)) {
|
|
$paramsAry[$params[1][$i]] = substr($params[2][$i], 1, -1);
|
|
} else {
|
|
$paramsAry[$params[1][$i]] = $params[2][$i];
|
|
}
|
|
}
|
|
}
|
|
// we only support qop=auth
|
|
if (!empty($paramsAry['qop']) &&
|
|
!in_array('auth', array_map('trim', explode(',', $paramsAry['qop'])))
|
|
) {
|
|
throw new HTTP_Request2_Exception(
|
|
"Only 'auth' qop is currently supported in digest authentication, " .
|
|
"server requested '{$paramsAry['qop']}'"
|
|
);
|
|
}
|
|
// we only support algorithm=MD5
|
|
if (!empty($paramsAry['algorithm']) && 'MD5' != $paramsAry['algorithm']) {
|
|
throw new HTTP_Request2_Exception(
|
|
"Only 'MD5' algorithm is currently supported in digest authentication, " .
|
|
"server requested '{$paramsAry['algorithm']}'"
|
|
);
|
|
}
|
|
|
|
return $paramsAry;
|
|
}
|
|
|
|
/**
|
|
* Parses [Proxy-]Authentication-Info header value and updates challenge
|
|
*
|
|
* @param array challenge to update
|
|
* @param string value of [Proxy-]Authentication-Info header
|
|
* @todo validate server rspauth response
|
|
*/
|
|
protected function updateChallenge(&$challenge, $headerValue)
|
|
{
|
|
$authParam = '!(' . self::REGEXP_TOKEN . ')\\s*=\\s*(' .
|
|
self::REGEXP_TOKEN . '|' . self::REGEXP_QUOTED_STRING . ')!';
|
|
$paramsAry = array();
|
|
|
|
preg_match_all($authParam, $headerValue, $params);
|
|
for ($i = 0; $i < count($params[0]); $i++) {
|
|
if ('"' == substr($params[2][$i], 0, 1)) {
|
|
$paramsAry[$params[1][$i]] = substr($params[2][$i], 1, -1);
|
|
} else {
|
|
$paramsAry[$params[1][$i]] = $params[2][$i];
|
|
}
|
|
}
|
|
// for now, just update the nonce value
|
|
if (!empty($paramsAry['nextnonce'])) {
|
|
$challenge['nonce'] = $paramsAry['nextnonce'];
|
|
$challenge['nc'] = 1;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Creates a value for [Proxy-]Authorization header when using digest authentication
|
|
*
|
|
* @param string user name
|
|
* @param string password
|
|
* @param string request URL
|
|
* @param array digest challenge parameters
|
|
* @return string value of [Proxy-]Authorization request header
|
|
* @link http://tools.ietf.org/html/rfc2617#section-3.2.2
|
|
*/
|
|
protected function createDigestResponse($user, $password, $url, &$challenge)
|
|
{
|
|
if (false !== ($q = strpos($url, '?')) &&
|
|
$this->request->getConfig('digest_compat_ie')
|
|
) {
|
|
$url = substr($url, 0, $q);
|
|
}
|
|
|
|
$a1 = md5($user . ':' . $challenge['realm'] . ':' . $password);
|
|
$a2 = md5($this->request->getMethod() . ':' . $url);
|
|
|
|
if (empty($challenge['qop'])) {
|
|
$digest = md5($a1 . ':' . $challenge['nonce'] . ':' . $a2);
|
|
} else {
|
|
$challenge['cnonce'] = 'Req2.' . rand();
|
|
if (empty($challenge['nc'])) {
|
|
$challenge['nc'] = 1;
|
|
}
|
|
$nc = sprintf('%08x', $challenge['nc']++);
|
|
$digest = md5($a1 . ':' . $challenge['nonce'] . ':' . $nc . ':' .
|
|
$challenge['cnonce'] . ':auth:' . $a2);
|
|
}
|
|
return 'Digest username="' . str_replace(array('\\', '"'), array('\\\\', '\\"'), $user) . '", ' .
|
|
'realm="' . $challenge['realm'] . '", ' .
|
|
'nonce="' . $challenge['nonce'] . '", ' .
|
|
'uri="' . $url . '", ' .
|
|
'response="' . $digest . '"' .
|
|
(!empty($challenge['opaque'])?
|
|
', opaque="' . $challenge['opaque'] . '"':
|
|
'') .
|
|
(!empty($challenge['qop'])?
|
|
', qop="auth", nc=' . $nc . ', cnonce="' . $challenge['cnonce'] . '"':
|
|
'');
|
|
}
|
|
|
|
/**
|
|
* Adds 'Authorization' header (if needed) to request headers array
|
|
*
|
|
* @param array request headers
|
|
* @param string request host (needed for digest authentication)
|
|
* @param string request URL (needed for digest authentication)
|
|
* @throws HTTP_Request2_Exception
|
|
*/
|
|
protected function addAuthorizationHeader(&$headers, $requestHost, $requestUrl)
|
|
{
|
|
if (!($auth = $this->request->getAuth())) {
|
|
return;
|
|
}
|
|
switch ($auth['scheme']) {
|
|
case HTTP_Request2::AUTH_BASIC:
|
|
$headers['authorization'] =
|
|
'Basic ' . base64_encode($auth['user'] . ':' . $auth['password']);
|
|
break;
|
|
|
|
case HTTP_Request2::AUTH_DIGEST:
|
|
unset($this->serverChallenge);
|
|
$fullUrl = ('/' == $requestUrl[0])?
|
|
$this->request->getUrl()->getScheme() . '://' .
|
|
$requestHost . $requestUrl:
|
|
$requestUrl;
|
|
foreach (array_keys(self::$challenges) as $key) {
|
|
if ($key == substr($fullUrl, 0, strlen($key))) {
|
|
$headers['authorization'] = $this->createDigestResponse(
|
|
$auth['user'], $auth['password'],
|
|
$requestUrl, self::$challenges[$key]
|
|
);
|
|
$this->serverChallenge =& self::$challenges[$key];
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
throw new HTTP_Request2_Exception(
|
|
"Unknown HTTP authentication scheme '{$auth['scheme']}'"
|
|
);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Adds 'Proxy-Authorization' header (if needed) to request headers array
|
|
*
|
|
* @param array request headers
|
|
* @param string request URL (needed for digest authentication)
|
|
* @throws HTTP_Request2_Exception
|
|
*/
|
|
protected function addProxyAuthorizationHeader(&$headers, $requestUrl)
|
|
{
|
|
if (!$this->request->getConfig('proxy_host') ||
|
|
!($user = $this->request->getConfig('proxy_user')) ||
|
|
(0 == strcasecmp('https', $this->request->getUrl()->getScheme()) &&
|
|
HTTP_Request2::METHOD_CONNECT != $this->request->getMethod())
|
|
) {
|
|
return;
|
|
}
|
|
|
|
$password = $this->request->getConfig('proxy_password');
|
|
switch ($this->request->getConfig('proxy_auth_scheme')) {
|
|
case HTTP_Request2::AUTH_BASIC:
|
|
$headers['proxy-authorization'] =
|
|
'Basic ' . base64_encode($user . ':' . $password);
|
|
break;
|
|
|
|
case HTTP_Request2::AUTH_DIGEST:
|
|
unset($this->proxyChallenge);
|
|
$proxyUrl = 'proxy://' . $this->request->getConfig('proxy_host') .
|
|
':' . $this->request->getConfig('proxy_port');
|
|
if (!empty(self::$challenges[$proxyUrl])) {
|
|
$headers['proxy-authorization'] = $this->createDigestResponse(
|
|
$user, $password,
|
|
$requestUrl, self::$challenges[$proxyUrl]
|
|
);
|
|
$this->proxyChallenge =& self::$challenges[$proxyUrl];
|
|
}
|
|
break;
|
|
|
|
default:
|
|
throw new HTTP_Request2_Exception(
|
|
"Unknown HTTP authentication scheme '" .
|
|
$this->request->getConfig('proxy_auth_scheme') . "'"
|
|
);
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* Creates the string with the Request-Line and request headers
|
|
*
|
|
* @return string
|
|
* @throws HTTP_Request2_Exception
|
|
*/
|
|
protected function prepareHeaders()
|
|
{
|
|
$headers = $this->request->getHeaders();
|
|
$url = $this->request->getUrl();
|
|
$connect = HTTP_Request2::METHOD_CONNECT == $this->request->getMethod();
|
|
$host = $url->getHost();
|
|
|
|
$defaultPort = 0 == strcasecmp($url->getScheme(), 'https')? 443: 80;
|
|
if (($port = $url->getPort()) && $port != $defaultPort || $connect) {
|
|
$host .= ':' . (empty($port)? $defaultPort: $port);
|
|
}
|
|
// Do not overwrite explicitly set 'Host' header, see bug #16146
|
|
if (!isset($headers['host'])) {
|
|
$headers['host'] = $host;
|
|
}
|
|
|
|
if ($connect) {
|
|
$requestUrl = $host;
|
|
|
|
} else {
|
|
if (!$this->request->getConfig('proxy_host') ||
|
|
0 == strcasecmp($url->getScheme(), 'https')
|
|
) {
|
|
$requestUrl = '';
|
|
} else {
|
|
$requestUrl = $url->getScheme() . '://' . $host;
|
|
}
|
|
$path = $url->getPath();
|
|
$query = $url->getQuery();
|
|
$requestUrl .= (empty($path)? '/': $path) . (empty($query)? '': '?' . $query);
|
|
}
|
|
|
|
if ('1.1' == $this->request->getConfig('protocol_version') &&
|
|
extension_loaded('zlib') && !isset($headers['accept-encoding'])
|
|
) {
|
|
$headers['accept-encoding'] = 'gzip, deflate';
|
|
}
|
|
|
|
$this->addAuthorizationHeader($headers, $host, $requestUrl);
|
|
$this->addProxyAuthorizationHeader($headers, $requestUrl);
|
|
$this->calculateRequestLength($headers);
|
|
|
|
$headersStr = $this->request->getMethod() . ' ' . $requestUrl . ' HTTP/' .
|
|
$this->request->getConfig('protocol_version') . "\r\n";
|
|
foreach ($headers as $name => $value) {
|
|
$canonicalName = implode('-', array_map('ucfirst', explode('-', $name)));
|
|
$headersStr .= $canonicalName . ': ' . $value . "\r\n";
|
|
}
|
|
return $headersStr . "\r\n";
|
|
}
|
|
|
|
/**
|
|
* Sends the request body
|
|
*
|
|
* @throws HTTP_Request2_Exception
|
|
*/
|
|
protected function writeBody()
|
|
{
|
|
if (in_array($this->request->getMethod(), self::$bodyDisallowed) ||
|
|
0 == $this->contentLength
|
|
) {
|
|
return;
|
|
}
|
|
|
|
$position = 0;
|
|
$bufferSize = $this->request->getConfig('buffer_size');
|
|
while ($position < $this->contentLength) {
|
|
if (is_string($this->requestBody)) {
|
|
$str = substr($this->requestBody, $position, $bufferSize);
|
|
} elseif (is_resource($this->requestBody)) {
|
|
$str = fread($this->requestBody, $bufferSize);
|
|
} else {
|
|
$str = $this->requestBody->read($bufferSize);
|
|
}
|
|
if (false === @fwrite($this->socket, $str, strlen($str))) {
|
|
throw new HTTP_Request2_Exception('Error writing request');
|
|
}
|
|
// Provide the length of written string to the observer, request #7630
|
|
$this->request->setLastEvent('sentBodyPart', strlen($str));
|
|
$position += strlen($str);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Reads the remote server's response
|
|
*
|
|
* @return HTTP_Request2_Response
|
|
* @throws HTTP_Request2_Exception
|
|
*/
|
|
protected function readResponse()
|
|
{
|
|
$bufferSize = $this->request->getConfig('buffer_size');
|
|
|
|
do {
|
|
$response = new HTTP_Request2_Response($this->readLine($bufferSize), true);
|
|
do {
|
|
$headerLine = $this->readLine($bufferSize);
|
|
$response->parseHeaderLine($headerLine);
|
|
} while ('' != $headerLine);
|
|
} while (in_array($response->getStatus(), array(100, 101)));
|
|
|
|
$this->request->setLastEvent('receivedHeaders', $response);
|
|
|
|
// No body possible in such responses
|
|
if (HTTP_Request2::METHOD_HEAD == $this->request->getMethod() ||
|
|
(HTTP_Request2::METHOD_CONNECT == $this->request->getMethod() &&
|
|
200 <= $response->getStatus() && 300 > $response->getStatus()) ||
|
|
in_array($response->getStatus(), array(204, 304))
|
|
) {
|
|
return $response;
|
|
}
|
|
|
|
$chunked = 'chunked' == $response->getHeader('transfer-encoding');
|
|
$length = $response->getHeader('content-length');
|
|
$hasBody = false;
|
|
if ($chunked || null === $length || 0 < intval($length)) {
|
|
// RFC 2616, section 4.4:
|
|
// 3. ... If a message is received with both a
|
|
// Transfer-Encoding header field and a Content-Length header field,
|
|
// the latter MUST be ignored.
|
|
$toRead = ($chunked || null === $length)? null: $length;
|
|
$this->chunkLength = 0;
|
|
|
|
while (!feof($this->socket) && (is_null($toRead) || 0 < $toRead)) {
|
|
if ($chunked) {
|
|
$data = $this->readChunked($bufferSize);
|
|
} elseif (is_null($toRead)) {
|
|
$data = $this->fread($bufferSize);
|
|
} else {
|
|
$data = $this->fread(min($toRead, $bufferSize));
|
|
$toRead -= strlen($data);
|
|
}
|
|
if ('' == $data && (!$this->chunkLength || feof($this->socket))) {
|
|
break;
|
|
}
|
|
|
|
$hasBody = true;
|
|
if ($this->request->getConfig('store_body')) {
|
|
$response->appendBody($data);
|
|
}
|
|
if (!in_array($response->getHeader('content-encoding'), array('identity', null))) {
|
|
$this->request->setLastEvent('receivedEncodedBodyPart', $data);
|
|
} else {
|
|
$this->request->setLastEvent('receivedBodyPart', $data);
|
|
}
|
|
}
|
|
}
|
|
|
|
if ($hasBody) {
|
|
$this->request->setLastEvent('receivedBody', $response);
|
|
}
|
|
return $response;
|
|
}
|
|
|
|
/**
|
|
* Reads until either the end of the socket or a newline, whichever comes first
|
|
*
|
|
* Strips the trailing newline from the returned data, handles global
|
|
* request timeout. Method idea borrowed from Net_Socket PEAR package.
|
|
*
|
|
* @param int buffer size to use for reading
|
|
* @return Available data up to the newline (not including newline)
|
|
* @throws HTTP_Request2_Exception In case of timeout
|
|
*/
|
|
protected function readLine($bufferSize)
|
|
{
|
|
$line = '';
|
|
while (!feof($this->socket)) {
|
|
if ($this->timeout) {
|
|
stream_set_timeout($this->socket, max($this->timeout - time(), 1));
|
|
}
|
|
$line .= @fgets($this->socket, $bufferSize);
|
|
$info = stream_get_meta_data($this->socket);
|
|
if ($info['timed_out'] || $this->timeout && time() > $this->timeout) {
|
|
throw new HTTP_Request2_Exception(
|
|
'Request timed out after ' .
|
|
$this->request->getConfig('timeout') . ' second(s)'
|
|
);
|
|
}
|
|
if (substr($line, -1) == "\n") {
|
|
return rtrim($line, "\r\n");
|
|
}
|
|
}
|
|
return $line;
|
|
}
|
|
|
|
/**
|
|
* Wrapper around fread(), handles global request timeout
|
|
*
|
|
* @param int Reads up to this number of bytes
|
|
* @return Data read from socket
|
|
* @throws HTTP_Request2_Exception In case of timeout
|
|
*/
|
|
protected function fread($length)
|
|
{
|
|
if ($this->timeout) {
|
|
stream_set_timeout($this->socket, max($this->timeout - time(), 1));
|
|
}
|
|
$data = fread($this->socket, $length);
|
|
$info = stream_get_meta_data($this->socket);
|
|
if ($info['timed_out'] || $this->timeout && time() > $this->timeout) {
|
|
throw new HTTP_Request2_Exception(
|
|
'Request timed out after ' .
|
|
$this->request->getConfig('timeout') . ' second(s)'
|
|
);
|
|
}
|
|
return $data;
|
|
}
|
|
|
|
/**
|
|
* Reads a part of response body encoded with chunked Transfer-Encoding
|
|
*
|
|
* @param int buffer size to use for reading
|
|
* @return string
|
|
* @throws HTTP_Request2_Exception
|
|
*/
|
|
protected function readChunked($bufferSize)
|
|
{
|
|
// at start of the next chunk?
|
|
if (0 == $this->chunkLength) {
|
|
$line = $this->readLine($bufferSize);
|
|
if (!preg_match('/^([0-9a-f]+)/i', $line, $matches)) {
|
|
throw new HTTP_Request2_Exception(
|
|
"Cannot decode chunked response, invalid chunk length '{$line}'"
|
|
);
|
|
} else {
|
|
$this->chunkLength = hexdec($matches[1]);
|
|
// Chunk with zero length indicates the end
|
|
if (0 == $this->chunkLength) {
|
|
$this->readLine($bufferSize);
|
|
return '';
|
|
}
|
|
}
|
|
}
|
|
$data = $this->fread(min($this->chunkLength, $bufferSize));
|
|
$this->chunkLength -= strlen($data);
|
|
if (0 == $this->chunkLength) {
|
|
$this->readLine($bufferSize); // Trailing CRLF
|
|
}
|
|
return $data;
|
|
}
|
|
}
|
|
|
|
?>
|