forked from GNUsocial/gnu-social
561 lines
22 KiB
PHP
561 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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* Copyright (c) 2008-2011, 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 SVN: $Id: Curl.php 310800 2011-05-06 07:29:56Z 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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* 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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* @version Release: 2.0.0RC1
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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 $lastInfo;
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/**
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* Creates a subclass of HTTP_Request2_Exception from curl error data
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*
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* @param resource curl handle
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* @return HTTP_Request2_Exception
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*/
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protected static function wrapCurlError($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
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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 $this->lastInfo;
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}
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/**
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* Creates a new cURL handle and populates it with data from the request
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*
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* @return resource a cURL handle, as created by curl_init()
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* @throws HTTP_Request2_LogicException
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*/
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protected function createCurlHandle()
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{
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$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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// 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 = $this->request->getConfig('proxy_user')) {
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curl_setopt($ch, CURLOPT_PROXYUSERPWD, $user . ':' .
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$this->request->getConfig('proxy_password'));
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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($ch, CURLOPT_PROXYAUTH, CURLAUTH_DIGEST);
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}
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}
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}
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// set authentication data
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if ($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($headers['content-length'])) {
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$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 $ch;
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}
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/**
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* Workaround for PHP bug #47204 that prevents rewinding request body
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*
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* The workaround consists of reading the entire request body into memory
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* and setting it as CURLOPT_POSTFIELDS, so it isn't recommended for large
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* file uploads, use Socket adapter instead.
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*
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* @param resource cURL handle
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* @param array Request headers
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*/
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protected function workaroundPhpBug47204($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($this, 'callbackReadBody'));
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// rewind may be needed, read the whole body into memory
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} else {
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if ($this->requestBody instanceof HTTP_Request2_MultipartBody) {
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$this->requestBody = $this->requestBody->__toString();
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} elseif (is_resource($this->requestBody)) {
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$fp = $this->requestBody;
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$this->requestBody = '';
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while (!feof($fp)) {
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$this->requestBody .= fread($fp, 16384);
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}
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}
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// curl hangs up if content-length is present
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unset($headers['content-length']);
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curl_setopt($ch, CURLOPT_POSTFIELDS, $this->requestBody);
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}
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}
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/**
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* Callback function called by cURL for reading the request body
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*
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* @param resource cURL handle
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* @param resource file descriptor (not used)
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* @param integer maximum length of data to return
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* @return string part of the request body, up to $length bytes
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*/
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protected function callbackReadBody($ch, $fd, $length)
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{
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if (!$this->eventSentHeaders) {
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$this->request->setLastEvent(
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'sentHeaders', curl_getinfo($ch, CURLINFO_HEADER_OUT)
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);
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$this->eventSentHeaders = true;
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}
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if (in_array($this->request->getMethod(), self::$bodyDisallowed) ||
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0 == $this->contentLength || $this->position >= $this->contentLength
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) {
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return '';
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}
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if (is_string($this->requestBody)) {
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$string = substr($this->requestBody, $this->position, $length);
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} elseif (is_resource($this->requestBody)) {
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$string = fread($this->requestBody, $length);
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} else {
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$string = $this->requestBody->read($length);
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}
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$this->request->setLastEvent('sentBodyPart', strlen($string));
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$this->position += strlen($string);
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return $string;
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}
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/**
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* Callback function called by cURL for saving the response headers
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*
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* @param resource cURL handle
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* @param string response header (with trailing CRLF)
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* @return integer number of bytes saved
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* @see HTTP_Request2_Response::parseHeaderLine()
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*/
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protected function callbackWriteHeader($ch, $string)
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{
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// we may receive a second set of headers if doing e.g. digest auth
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if ($this->eventReceivedHeaders || !$this->eventSentHeaders) {
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// don't bother with 100-Continue responses (bug #15785)
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if (!$this->eventSentHeaders ||
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$this->response->getStatus() >= 200
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) {
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$this->request->setLastEvent(
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'sentHeaders', curl_getinfo($ch, CURLINFO_HEADER_OUT)
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);
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}
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$upload = curl_getinfo($ch, CURLINFO_SIZE_UPLOAD);
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// if body wasn't read by a callback, send event with total body size
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if ($upload > $this->position) {
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$this->request->setLastEvent(
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'sentBodyPart', $upload - $this->position
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);
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$this->position = $upload;
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}
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if ($upload && (!$this->eventSentHeaders
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|| $this->response->getStatus() >= 200)
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) {
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$this->request->setLastEvent('sentBody', $upload);
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}
|
|
$this->eventSentHeaders = true;
|
|
// we'll need a new response object
|
|
if ($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 cURL handle (not used)
|
|
* @param string part of the response body
|
|
* @return integer number of bytes saved
|
|
* @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);
|
|
}
|
|
}
|
|
?>
|