forked from GNUsocial/gnu-social
		
	
		
			
				
	
	
		
			568 lines
		
	
	
		
			22 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
			
		
		
	
	
			568 lines
		
	
	
		
			22 KiB
		
	
	
	
		
			PHP
		
	
	
	
	
	
<?php
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/**
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 * Adapter for HTTP_Request2 wrapping around cURL extension
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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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 * This source file is subject to BSD 3-Clause License that is bundled
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 * with this package in the file LICENSE and available at the URL
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 * https://raw.github.com/pear/HTTP_Request2/trunk/docs/LICENSE
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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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 * @copyright 2008-2014 Alexey Borzov <avb@php.net>
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 * @license   http://opensource.org/licenses/BSD-3-Clause BSD 3-Clause License
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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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 * Adapter for HTTP_Request2 wrapping around cURL extension
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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-3-Clause BSD 3-Clause License
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 * @version  Release: 2.2.1
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 * @link     http://pear.php.net/package/HTTP_Request2
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 */
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class HTTP_Request2_Adapter_Curl extends HTTP_Request2_Adapter
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{
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    /**
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     * Mapping of header names to cURL options
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     * @var  array
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     */
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    protected static $headerMap = array(
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        'accept-encoding' => CURLOPT_ENCODING,
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        'cookie'          => CURLOPT_COOKIE,
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        'referer'         => CURLOPT_REFERER,
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        'user-agent'      => CURLOPT_USERAGENT
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    );
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    /**
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     * Mapping of SSL context options to cURL options
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     * @var  array
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     */
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    protected static $sslContextMap = array(
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        'ssl_verify_peer' => CURLOPT_SSL_VERIFYPEER,
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        'ssl_cafile'      => CURLOPT_CAINFO,
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        'ssl_capath'      => CURLOPT_CAPATH,
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        'ssl_local_cert'  => CURLOPT_SSLCERT,
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        'ssl_passphrase'  => CURLOPT_SSLCERTPASSWD
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    );
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    /**
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     * Mapping of CURLE_* constants to Exception subclasses and error codes
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     * @var  array
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     */
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    protected static $errorMap = array(
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        CURLE_UNSUPPORTED_PROTOCOL  => array('HTTP_Request2_MessageException',
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                                             HTTP_Request2_Exception::NON_HTTP_REDIRECT),
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        CURLE_COULDNT_RESOLVE_PROXY => array('HTTP_Request2_ConnectionException'),
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        CURLE_COULDNT_RESOLVE_HOST  => array('HTTP_Request2_ConnectionException'),
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        CURLE_COULDNT_CONNECT       => array('HTTP_Request2_ConnectionException'),
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        // error returned from write callback
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        CURLE_WRITE_ERROR           => array('HTTP_Request2_MessageException',
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                                             HTTP_Request2_Exception::NON_HTTP_REDIRECT),
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        CURLE_OPERATION_TIMEOUTED   => array('HTTP_Request2_MessageException',
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                                             HTTP_Request2_Exception::TIMEOUT),
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        CURLE_HTTP_RANGE_ERROR      => array('HTTP_Request2_MessageException'),
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        CURLE_SSL_CONNECT_ERROR     => array('HTTP_Request2_ConnectionException'),
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        CURLE_LIBRARY_NOT_FOUND     => array('HTTP_Request2_LogicException',
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                                             HTTP_Request2_Exception::MISCONFIGURATION),
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        CURLE_FUNCTION_NOT_FOUND    => array('HTTP_Request2_LogicException',
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                                             HTTP_Request2_Exception::MISCONFIGURATION),
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        CURLE_ABORTED_BY_CALLBACK   => array('HTTP_Request2_MessageException',
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                                             HTTP_Request2_Exception::NON_HTTP_REDIRECT),
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        CURLE_TOO_MANY_REDIRECTS    => array('HTTP_Request2_MessageException',
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                                             HTTP_Request2_Exception::TOO_MANY_REDIRECTS),
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        CURLE_SSL_PEER_CERTIFICATE  => array('HTTP_Request2_ConnectionException'),
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        CURLE_GOT_NOTHING           => array('HTTP_Request2_MessageException'),
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        CURLE_SSL_ENGINE_NOTFOUND   => array('HTTP_Request2_LogicException',
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                                             HTTP_Request2_Exception::MISCONFIGURATION),
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        CURLE_SSL_ENGINE_SETFAILED  => array('HTTP_Request2_LogicException',
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                                             HTTP_Request2_Exception::MISCONFIGURATION),
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        CURLE_SEND_ERROR            => array('HTTP_Request2_MessageException'),
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        CURLE_RECV_ERROR            => array('HTTP_Request2_MessageException'),
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        CURLE_SSL_CERTPROBLEM       => array('HTTP_Request2_LogicException',
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                                             HTTP_Request2_Exception::INVALID_ARGUMENT),
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        CURLE_SSL_CIPHER            => array('HTTP_Request2_ConnectionException'),
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        CURLE_SSL_CACERT            => array('HTTP_Request2_ConnectionException'),
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        CURLE_BAD_CONTENT_ENCODING  => array('HTTP_Request2_MessageException'),
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    );
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    /**
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     * Response being received
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     * @var  HTTP_Request2_Response
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     */
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    protected $response;
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    /**
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     * Whether 'sentHeaders' event was sent to observers
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     * @var  boolean
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     */
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    protected $eventSentHeaders = false;
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    /**
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     * Whether 'receivedHeaders' event was sent to observers
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     * @var boolean
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     */
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    protected $eventReceivedHeaders = false;
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    /**
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     * Position within request body
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     * @var  integer
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     * @see  callbackReadBody()
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     */
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    protected $position = 0;
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    /**
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     * Information about last transfer, as returned by curl_getinfo()
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     * @var  array
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     */
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    protected $lastInfo;
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    /**
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     * Creates a subclass of HTTP_Request2_Exception from curl error data
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     *
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     * @param resource $ch curl handle
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     *
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     * @return HTTP_Request2_Exception
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     */
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    protected static function wrapCurlError($ch)
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    {
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        $nativeCode = curl_errno($ch);
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        $message    = 'Curl error: ' . curl_error($ch);
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        if (!isset(self::$errorMap[$nativeCode])) {
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            return new HTTP_Request2_Exception($message, 0, $nativeCode);
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        } else {
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            $class = self::$errorMap[$nativeCode][0];
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            $code  = empty(self::$errorMap[$nativeCode][1])
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                     ? 0 : self::$errorMap[$nativeCode][1];
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            return new $class($message, $code, $nativeCode);
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        }
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    }
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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 $request HTTP request message
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     *
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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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        if (!extension_loaded('curl')) {
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            throw new HTTP_Request2_LogicException(
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                'cURL extension not available', HTTP_Request2_Exception::MISCONFIGURATION
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            );
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        }
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        $this->request              = $request;
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        $this->response             = null;
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        $this->position             = 0;
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        $this->eventSentHeaders     = false;
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        $this->eventReceivedHeaders = false;
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        try {
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            if (false === curl_exec($ch = $this->createCurlHandle())) {
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                $e = self::wrapCurlError($ch);
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            }
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        } catch (Exception $e) {
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        }
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        if (isset($ch)) {
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            $this->lastInfo = curl_getinfo($ch);
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            curl_close($ch);
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        }
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        $response = $this->response;
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        unset($this->request, $this->requestBody, $this->response);
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        if (!empty($e)) {
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            throw $e;
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        }
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        if ($jar = $request->getCookieJar()) {
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            $jar->addCookiesFromResponse($response, $request->getUrl());
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        }
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        if (0 < $this->lastInfo['size_download']) {
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            $request->setLastEvent('receivedBody', $response);
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        }
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        return $response;
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    }
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    /**
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     * Returns information about last transfer
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     *
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     * @return   array   associative array as returned by curl_getinfo()
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     */
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    public function getInfo()
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    {
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        return $this->lastInfo;
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    }
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    /**
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     * Creates a new cURL handle and populates it with data from the request
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     *
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     * @return   resource    a cURL handle, as created by curl_init()
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     * @throws   HTTP_Request2_LogicException
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     * @throws   HTTP_Request2_NotImplementedException
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     */
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    protected function createCurlHandle()
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    {
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        $ch = curl_init();
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        curl_setopt_array($ch, array(
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            // setup write callbacks
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            CURLOPT_HEADERFUNCTION => array($this, 'callbackWriteHeader'),
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            CURLOPT_WRITEFUNCTION  => array($this, 'callbackWriteBody'),
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            // buffer size
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            CURLOPT_BUFFERSIZE     => $this->request->getConfig('buffer_size'),
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            // connection timeout
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            CURLOPT_CONNECTTIMEOUT => $this->request->getConfig('connect_timeout'),
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            // save full outgoing headers, in case someone is interested
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            CURLINFO_HEADER_OUT    => true,
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            // request url
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            CURLOPT_URL            => $this->request->getUrl()->getUrl()
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        ));
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        // set up redirects
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        if (!$this->request->getConfig('follow_redirects')) {
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            curl_setopt($ch, CURLOPT_FOLLOWLOCATION, false);
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        } else {
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            if (!@curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true)) {
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                throw new HTTP_Request2_LogicException(
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                    'Redirect support in curl is unavailable due to open_basedir or safe_mode setting',
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                    HTTP_Request2_Exception::MISCONFIGURATION
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                );
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            }
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            curl_setopt($ch, CURLOPT_MAXREDIRS, $this->request->getConfig('max_redirects'));
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            // limit redirects to http(s), works in 5.2.10+
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            if (defined('CURLOPT_REDIR_PROTOCOLS')) {
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                curl_setopt($ch, CURLOPT_REDIR_PROTOCOLS, CURLPROTO_HTTP | CURLPROTO_HTTPS);
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            }
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            // works in 5.3.2+, http://bugs.php.net/bug.php?id=49571
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            if ($this->request->getConfig('strict_redirects') && defined('CURLOPT_POSTREDIR')) {
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                curl_setopt($ch, CURLOPT_POSTREDIR, 3);
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            }
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        }
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        // set local IP via CURLOPT_INTERFACE (request #19515)
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        if ($ip = $this->request->getConfig('local_ip')) {
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            curl_setopt($ch, CURLOPT_INTERFACE, $ip);
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        }
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        // request timeout
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        if ($timeout = $this->request->getConfig('timeout')) {
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            curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
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        }
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        // set HTTP version
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        switch ($this->request->getConfig('protocol_version')) {
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        case '1.0':
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            curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0);
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            break;
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        case '1.1':
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            curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
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        }
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        // set request method
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        switch ($this->request->getMethod()) {
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        case HTTP_Request2::METHOD_GET:
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            curl_setopt($ch, CURLOPT_HTTPGET, true);
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            break;
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        case HTTP_Request2::METHOD_POST:
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            curl_setopt($ch, CURLOPT_POST, true);
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            break;
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        case HTTP_Request2::METHOD_HEAD:
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            curl_setopt($ch, CURLOPT_NOBODY, true);
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            break;
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        case HTTP_Request2::METHOD_PUT:
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            curl_setopt($ch, CURLOPT_UPLOAD, true);
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            break;
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        default:
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            curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $this->request->getMethod());
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        }
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        // set proxy, if needed
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        if ($host = $this->request->getConfig('proxy_host')) {
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            if (!($port = $this->request->getConfig('proxy_port'))) {
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                throw new HTTP_Request2_LogicException(
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                    'Proxy port not provided', HTTP_Request2_Exception::MISSING_VALUE
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                );
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            }
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            curl_setopt($ch, CURLOPT_PROXY, $host . ':' . $port);
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            if ($user = $this->request->getConfig('proxy_user')) {
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                curl_setopt(
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                    $ch, CURLOPT_PROXYUSERPWD,
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                    $user . ':' . $this->request->getConfig('proxy_password')
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                );
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                switch ($this->request->getConfig('proxy_auth_scheme')) {
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                case HTTP_Request2::AUTH_BASIC:
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                    curl_setopt($ch, CURLOPT_PROXYAUTH, CURLAUTH_BASIC);
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                    break;
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                case HTTP_Request2::AUTH_DIGEST:
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                    curl_setopt($ch, CURLOPT_PROXYAUTH, CURLAUTH_DIGEST);
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                }
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            }
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            if ($type = $this->request->getConfig('proxy_type')) {
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                switch ($type) {
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                case 'http':
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                    curl_setopt($ch, CURLOPT_PROXYTYPE, CURLPROXY_HTTP);
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                    break;
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                case 'socks5':
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                    curl_setopt($ch, CURLOPT_PROXYTYPE, CURLPROXY_SOCKS5);
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                    break;
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                default:
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                    throw new HTTP_Request2_NotImplementedException(
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                        "Proxy type '{$type}' is not supported"
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                    );
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                }
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            }
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        }
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        // set authentication data
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        if ($auth = $this->request->getAuth()) {
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            curl_setopt($ch, CURLOPT_USERPWD, $auth['user'] . ':' . $auth['password']);
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            switch ($auth['scheme']) {
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            case HTTP_Request2::AUTH_BASIC:
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                curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
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                break;
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            case HTTP_Request2::AUTH_DIGEST:
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                curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_DIGEST);
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            }
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        }
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        // set SSL options
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        foreach ($this->request->getConfig() as $name => $value) {
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						|
            if ('ssl_verify_host' == $name && null !== $value) {
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                curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, $value? 2: 0);
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            } elseif (isset(self::$sslContextMap[$name]) && null !== $value) {
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                curl_setopt($ch, self::$sslContextMap[$name], $value);
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            }
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        }
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        $headers = $this->request->getHeaders();
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        // make cURL automagically send proper header
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        if (!isset($headers['accept-encoding'])) {
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            $headers['accept-encoding'] = '';
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        }
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        if (($jar = $this->request->getCookieJar())
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            && ($cookies = $jar->getMatching($this->request->getUrl(), true))
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        ) {
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            $headers['cookie'] = (empty($headers['cookie'])? '': $headers['cookie'] . '; ') . $cookies;
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        }
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						|
        // set headers having special cURL keys
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        foreach (self::$headerMap as $name => $option) {
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            if (isset($headers[$name])) {
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                curl_setopt($ch, $option, $headers[$name]);
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                unset($headers[$name]);
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            }
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        }
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        $this->calculateRequestLength($headers);
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        if (isset($headers['content-length']) || isset($headers['transfer-encoding'])) {
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            $this->workaroundPhpBug47204($ch, $headers);
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        }
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        // set headers not having special keys
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        $headersFmt = array();
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						|
        foreach ($headers as $name => $value) {
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            $canonicalName = implode('-', array_map('ucfirst', explode('-', $name)));
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            $headersFmt[]  = $canonicalName . ': ' . $value;
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        }
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        curl_setopt($ch, CURLOPT_HTTPHEADER, $headersFmt);
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        return $ch;
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    }
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    /**
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     * Workaround for PHP bug #47204 that prevents rewinding request body
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     *
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     * The workaround consists of reading the entire request body into memory
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     * and setting it as CURLOPT_POSTFIELDS, so it isn't recommended for large
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     * file uploads, use Socket adapter instead.
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     *
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     * @param resource $ch       cURL handle
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     * @param array    &$headers Request headers
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     */
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    protected function workaroundPhpBug47204($ch, &$headers)
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    {
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        // no redirects, no digest auth -> probably no rewind needed
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        if (!$this->request->getConfig('follow_redirects')
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            && (!($auth = $this->request->getAuth())
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                || HTTP_Request2::AUTH_DIGEST != $auth['scheme'])
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        ) {
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            curl_setopt($ch, CURLOPT_READFUNCTION, array($this, 'callbackReadBody'));
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        } else {
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            // rewind may be needed, read the whole body into memory
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            if ($this->requestBody instanceof HTTP_Request2_MultipartBody) {
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                $this->requestBody = $this->requestBody->__toString();
 | 
						|
 | 
						|
            } elseif (is_resource($this->requestBody)) {
 | 
						|
                $fp = $this->requestBody;
 | 
						|
                $this->requestBody = '';
 | 
						|
                while (!feof($fp)) {
 | 
						|
                    $this->requestBody .= fread($fp, 16384);
 | 
						|
                }
 | 
						|
            }
 | 
						|
            // curl hangs up if content-length is present
 | 
						|
            unset($headers['content-length']);
 | 
						|
            curl_setopt($ch, CURLOPT_POSTFIELDS, $this->requestBody);
 | 
						|
        }
 | 
						|
    }
 | 
						|
 | 
						|
    /**
 | 
						|
     * Callback function called by cURL for reading the request body
 | 
						|
     *
 | 
						|
     * @param resource $ch     cURL handle
 | 
						|
     * @param resource $fd     file descriptor (not used)
 | 
						|
     * @param integer  $length maximum length of data to return
 | 
						|
     *
 | 
						|
     * @return   string      part of the request body, up to $length bytes
 | 
						|
     */
 | 
						|
    protected function callbackReadBody($ch, $fd, $length)
 | 
						|
    {
 | 
						|
        if (!$this->eventSentHeaders) {
 | 
						|
            $this->request->setLastEvent(
 | 
						|
                'sentHeaders', curl_getinfo($ch, CURLINFO_HEADER_OUT)
 | 
						|
            );
 | 
						|
            $this->eventSentHeaders = true;
 | 
						|
        }
 | 
						|
        if (in_array($this->request->getMethod(), self::$bodyDisallowed)
 | 
						|
            || 0 == $this->contentLength || $this->position >= $this->contentLength
 | 
						|
        ) {
 | 
						|
            return '';
 | 
						|
        }
 | 
						|
        if (is_string($this->requestBody)) {
 | 
						|
            $string = substr($this->requestBody, $this->position, $length);
 | 
						|
        } elseif (is_resource($this->requestBody)) {
 | 
						|
            $string = fread($this->requestBody, $length);
 | 
						|
        } else {
 | 
						|
            $string = $this->requestBody->read($length);
 | 
						|
        }
 | 
						|
        $this->request->setLastEvent('sentBodyPart', strlen($string));
 | 
						|
        $this->position += strlen($string);
 | 
						|
        return $string;
 | 
						|
    }
 | 
						|
 | 
						|
    /**
 | 
						|
     * Callback function called by cURL for saving the response headers
 | 
						|
     *
 | 
						|
     * @param resource $ch     cURL handle
 | 
						|
     * @param string   $string response header (with trailing CRLF)
 | 
						|
     *
 | 
						|
     * @return   integer     number of bytes saved
 | 
						|
     * @see      HTTP_Request2_Response::parseHeaderLine()
 | 
						|
     */
 | 
						|
    protected function callbackWriteHeader($ch, $string)
 | 
						|
    {
 | 
						|
        // we may receive a second set of headers if doing e.g. digest auth
 | 
						|
        if ($this->eventReceivedHeaders || !$this->eventSentHeaders) {
 | 
						|
            // don't bother with 100-Continue responses (bug #15785)
 | 
						|
            if (!$this->eventSentHeaders
 | 
						|
                || $this->response->getStatus() >= 200
 | 
						|
            ) {
 | 
						|
                $this->request->setLastEvent(
 | 
						|
                    'sentHeaders', curl_getinfo($ch, CURLINFO_HEADER_OUT)
 | 
						|
                );
 | 
						|
            }
 | 
						|
            $upload = curl_getinfo($ch, CURLINFO_SIZE_UPLOAD);
 | 
						|
            // if body wasn't read by a callback, send event with total body size
 | 
						|
            if ($upload > $this->position) {
 | 
						|
                $this->request->setLastEvent(
 | 
						|
                    'sentBodyPart', $upload - $this->position
 | 
						|
                );
 | 
						|
                $this->position = $upload;
 | 
						|
            }
 | 
						|
            if ($upload && (!$this->eventSentHeaders
 | 
						|
                            || $this->response->getStatus() >= 200)
 | 
						|
            ) {
 | 
						|
                $this->request->setLastEvent('sentBody', $upload);
 | 
						|
            }
 | 
						|
            $this->eventSentHeaders = true;
 | 
						|
            // we'll need a new response object
 | 
						|
            if ($this->eventReceivedHeaders) {
 | 
						|
                $this->eventReceivedHeaders = false;
 | 
						|
                $this->response             = null;
 | 
						|
            }
 | 
						|
        }
 | 
						|
        if (empty($this->response)) {
 | 
						|
            $this->response = new HTTP_Request2_Response(
 | 
						|
                $string, false, curl_getinfo($ch, CURLINFO_EFFECTIVE_URL)
 | 
						|
            );
 | 
						|
        } else {
 | 
						|
            $this->response->parseHeaderLine($string);
 | 
						|
            if ('' == trim($string)) {
 | 
						|
                // don't bother with 100-Continue responses (bug #15785)
 | 
						|
                if (200 <= $this->response->getStatus()) {
 | 
						|
                    $this->request->setLastEvent('receivedHeaders', $this->response);
 | 
						|
                }
 | 
						|
 | 
						|
                if ($this->request->getConfig('follow_redirects') && $this->response->isRedirect()) {
 | 
						|
                    $redirectUrl = new Net_URL2($this->response->getHeader('location'));
 | 
						|
 | 
						|
                    // for versions lower than 5.2.10, check the redirection URL protocol
 | 
						|
                    if (!defined('CURLOPT_REDIR_PROTOCOLS') && $redirectUrl->isAbsolute()
 | 
						|
                        && !in_array($redirectUrl->getScheme(), array('http', 'https'))
 | 
						|
                    ) {
 | 
						|
                        return -1;
 | 
						|
                    }
 | 
						|
 | 
						|
                    if ($jar = $this->request->getCookieJar()) {
 | 
						|
                        $jar->addCookiesFromResponse($this->response, $this->request->getUrl());
 | 
						|
                        if (!$redirectUrl->isAbsolute()) {
 | 
						|
                            $redirectUrl = $this->request->getUrl()->resolve($redirectUrl);
 | 
						|
                        }
 | 
						|
                        if ($cookies = $jar->getMatching($redirectUrl, true)) {
 | 
						|
                            curl_setopt($ch, CURLOPT_COOKIE, $cookies);
 | 
						|
                        }
 | 
						|
                    }
 | 
						|
                }
 | 
						|
                $this->eventReceivedHeaders = true;
 | 
						|
            }
 | 
						|
        }
 | 
						|
        return strlen($string);
 | 
						|
    }
 | 
						|
 | 
						|
    /**
 | 
						|
     * Callback function called by cURL for saving the response body
 | 
						|
     *
 | 
						|
     * @param resource $ch     cURL handle (not used)
 | 
						|
     * @param string   $string part of the response body
 | 
						|
     *
 | 
						|
     * @return   integer     number of bytes saved
 | 
						|
     * @throws   HTTP_Request2_MessageException
 | 
						|
     * @see      HTTP_Request2_Response::appendBody()
 | 
						|
     */
 | 
						|
    protected function callbackWriteBody($ch, $string)
 | 
						|
    {
 | 
						|
        // cURL calls WRITEFUNCTION callback without calling HEADERFUNCTION if
 | 
						|
        // response doesn't start with proper HTTP status line (see bug #15716)
 | 
						|
        if (empty($this->response)) {
 | 
						|
            throw new HTTP_Request2_MessageException(
 | 
						|
                "Malformed response: {$string}",
 | 
						|
                HTTP_Request2_Exception::MALFORMED_RESPONSE
 | 
						|
            );
 | 
						|
        }
 | 
						|
        if ($this->request->getConfig('store_body')) {
 | 
						|
            $this->response->appendBody($string);
 | 
						|
        }
 | 
						|
        $this->request->setLastEvent('receivedBodyPart', $string);
 | 
						|
        return strlen($string);
 | 
						|
    }
 | 
						|
}
 | 
						|
?>
 |