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<?php
/*
* Copyright 2014 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* Curl based implementation of Google_IO.
*
* @author Stuart Langley <slangley@google.com>
*/
require_once 'Google/IO/Abstract.php';
class Google_IO_Curl extends Google_IO_Abstract
{
// cURL hex representation of version 7.30.0
const NO_QUIRK_VERSION = 0x071E00;
private $options = array();
/**
* Execute an HTTP Request
*
* @param Google_HttpRequest $request the http request to be executed
* @return Google_HttpRequest http request with the response http code,
* response headers and response body filled in
* @throws Google_IO_Exception on curl or IO error
*/
public function executeRequest(Google_Http_Request $request)
{
$curl = curl_init();
if ($request->getPostBody()) {
curl_setopt($curl, CURLOPT_POSTFIELDS, $request->getPostBody());
}
$requestHeaders = $request->getRequestHeaders();
if ($requestHeaders && is_array($requestHeaders)) {
$curlHeaders = array();
foreach ($requestHeaders as $k => $v) {
$curlHeaders[] = "$k: $v";
}
curl_setopt($curl, CURLOPT_HTTPHEADER, $curlHeaders);
}
curl_setopt($curl, CURLOPT_URL, $request->getUrl());
curl_setopt($curl, CURLOPT_CUSTOMREQUEST, $request->getRequestMethod());
curl_setopt($curl, CURLOPT_USERAGENT, $request->getUserAgent());
curl_setopt($curl, CURLOPT_FOLLOWLOCATION, false);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, true);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_HEADER, true);
if ($request->canGzip()) {
curl_setopt($curl, CURLOPT_ENCODING, 'gzip,deflate');
}
foreach ($this->options as $key => $var) {
curl_setopt($curl, $key, $var);
}
if (!isset($this->options[CURLOPT_CAINFO])) {
curl_setopt($curl, CURLOPT_CAINFO, dirname(__FILE__) . '/cacerts.pem');
}
$response = curl_exec($curl);
if ($response === false) {
throw new Google_IO_Exception(curl_error($curl));
}
$headerSize = curl_getinfo($curl, CURLINFO_HEADER_SIZE);
list($responseHeaders, $responseBody) = $this->parseHttpResponse($response, $headerSize);
$responseCode = curl_getinfo($curl, CURLINFO_HTTP_CODE);
return array($responseBody, $responseHeaders, $responseCode);
}
/**
* Set options that update the transport implementation's behavior.
* @param $options
*/
public function setOptions($options)
{
$this->options = $options + $this->options;
}
/**
* Set the maximum request time in seconds.
* @param $timeout in seconds
*/
public function setTimeout($timeout)
{
// Since this timeout is really for putting a bound on the time
// we'll set them both to the same. If you need to specify a longer
// CURLOPT_TIMEOUT, or a tigher CONNECTTIMEOUT, the best thing to
// do is use the setOptions method for the values individually.
$this->options[CURLOPT_CONNECTTIMEOUT] = $timeout;
$this->options[CURLOPT_TIMEOUT] = $timeout;
}
/**
* Get the maximum request time in seconds.
* @return timeout in seconds
*/
public function getTimeout()
{
return $this->options[CURLOPT_TIMEOUT];
}
/**
* Test for the presence of a cURL header processing bug
*
* {@inheritDoc}
*
* @return boolean
*/
protected function needsQuirk()
{
$ver = curl_version();
$versionNum = $ver['version_number'];
return $versionNum < Google_IO_Curl::NO_QUIRK_VERSION;
}
}
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