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<?php

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* Licensed under the Apache License, Version 2.0 (the "License");

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* you may not use this file except in compliance with the License.

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* You may obtain a copy of the License at

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* http://www.apache.org/licenses/LICENSE-2.0

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* Unless required by applicable law or agreed to in writing, software

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* distributed under the License is distributed on an "AS IS" BASIS,

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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

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* See the License for the specific language governing permissions and

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* limitations under the License.

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/**

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* Curl based implementation of Google_IO.

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* @author Stuart Langley <slangley@google.com>

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if (!class_exists('UDP_Google_Client')) {

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require_once dirname(__FILE__) . '/../autoload.php';

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}

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class UDP_Google_IO_Curl extends UDP_Google_IO_Abstract

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{

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// cURL hex representation of version 7.30.0

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const NO_QUIRK_VERSION = 0x071E00;

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private $options = array();

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public function __construct(UDP_Google_Client $client)

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{

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if (!extension_loaded('curl')) {

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$error = 'The cURL IO handler requires the cURL extension to be enabled';

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$client->getLogger()->critical($error);

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throw new UDP_Google_IO_Exception($error);

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}

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parent::__construct($client);

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}

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/**

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* Execute an HTTP Request

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* @param Google_Http_Request $request the http request to be executed

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* @return array containing response headers, body, and http code

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* @throws UDP_Google_IO_Exception on curl or IO error

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public function executeRequest(UDP_Google_Http_Request $request)

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{

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$curl = curl_init();

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if ($request->getPostBody()) {

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curl_setopt($curl, CURLOPT_POSTFIELDS, $request->getPostBody());

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}

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$requestHeaders = $request->getRequestHeaders();

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if ($requestHeaders && is_array($requestHeaders)) {

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$curlHeaders = array();

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foreach ($requestHeaders as $k => $v) {

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$curlHeaders[] = "$k: $v";

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}

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curl_setopt($curl, CURLOPT_HTTPHEADER, $curlHeaders);

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}

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curl_setopt($curl, CURLOPT_URL, $request->getUrl());

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curl_setopt($curl, CURLOPT_CUSTOMREQUEST, $request->getRequestMethod());

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curl_setopt($curl, CURLOPT_USERAGENT, $request->getUserAgent());

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curl_setopt($curl, CURLOPT_FOLLOWLOCATION, false);

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curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, true);

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// 1 is CURL_SSLVERSION_TLSv1, which is not always defined in PHP.

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// UpdraftPlus patch

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// The SDK leaves this on the default setting in later releases

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// curl_setopt($curl, CURLOPT_SSLVERSION, 1);

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curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);

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curl_setopt($curl, CURLOPT_HEADER, true);

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if ($request->canGzip()) {

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curl_setopt($curl, CURLOPT_ENCODING, 'gzip,deflate');

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}

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$options = $this->client->getClassConfig('UDP_Google_IO_Curl', 'options');

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if (is_array($options)) {

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$this->setOptions($options);

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}

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foreach ($this->options as $key => $var) {

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curl_setopt($curl, $key, $var);

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}

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if (!isset($this->options[CURLOPT_CAINFO])) {

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curl_setopt($curl, CURLOPT_CAINFO, dirname(__FILE__) . '/cacerts.pem');

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}

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$this->client->getLogger()->debug(

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'cURL request',

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array(

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'url' => $request->getUrl(),

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'method' => $request->getRequestMethod(),

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'headers' => $requestHeaders,

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'body' => $request->getPostBody()

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)

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);

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$response = curl_exec($curl);

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if ($response === false) {

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$error = curl_error($curl);

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$code = curl_errno($curl);

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$map = $this->client->getClassConfig('UDP_Google_IO_Exception', 'retry_map');

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$this->client->getLogger()->error('cURL ' . $error);

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throw new UDP_Google_IO_Exception($error, $code, null, $map);

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}

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$headerSize = curl_getinfo($curl, CURLINFO_HEADER_SIZE);

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list($responseHeaders, $responseBody) = $this->parseHttpResponse($response, $headerSize);

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$responseCode = curl_getinfo($curl, CURLINFO_HTTP_CODE);

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$this->client->getLogger()->debug(

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'cURL response',

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array(

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'code' => $responseCode,

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'headers' => $responseHeaders,

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'body' => $responseBody,

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)

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);

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return array($responseBody, $responseHeaders, $responseCode);

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}

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/**

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* Set options that update the transport implementation's behavior.

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* @param $options

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public function setOptions($options)

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{

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$this->options = $options + $this->options;

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}

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/**

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* Set the maximum request time in seconds.

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* @param $timeout in seconds

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public function setTimeout($timeout)

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{

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// Since this timeout is really for putting a bound on the time

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// we'll set them both to the same. If you need to specify a longer

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// CURLOPT_TIMEOUT, or a higher CONNECTTIMEOUT, the best thing to

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// do is use the setOptions method for the values individually.

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$this->options[CURLOPT_CONNECTTIMEOUT] = $timeout;

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$this->options[CURLOPT_TIMEOUT] = $timeout;

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}

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/**

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* Get the maximum request time in seconds.

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* @return timeout in seconds

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public function getTimeout()

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{

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return $this->options[CURLOPT_TIMEOUT];

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}

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/**

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* Test for the presence of a cURL header processing bug

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* {@inheritDoc}

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* @return boolean

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protected function needsQuirk()

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{

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$ver = curl_version();

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$versionNum = $ver['version_number'];

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return $versionNum < UDP_Google_IO_Curl::NO_QUIRK_VERSION;

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}

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}

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