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<?php
namespace OAuth\Common\Http\Client;
use OAuth\Common\Http\Exception\TokenResponseException;
use OAuth\Common\Http\Uri\UriInterface;
/**
* Client implementation for cURL
*/
class CurlClient extends AbstractClient
{
/**
* If true, explicitly sets cURL to use SSL version 3. Use this if cURL
* compiles with GnuTLS SSL.
*
* @var bool
*/
private $forceSSL3 = false;
/**
* Additional parameters (as `key => value` pairs) to be passed to `curl_setopt`
*
* @var array
*/
private $parameters = array();
/**
* Additional `curl_setopt` parameters
*
* @param array $parameters
*/
public function setCurlParameters(array $parameters)
{
$this->parameters = $parameters;
}
/**
* @param bool $force
*
* @return CurlClient
*/
public function setForceSSL3($force)
{
$this->forceSSL3 = $force;
return $this;
}
/**
* Any implementing HTTP providers should send a request to the provided endpoint with the parameters.
* They should return, in string form, the response body and throw an exception on error.
*
* @param UriInterface $endpoint
* @param mixed $requestBody
* @param array $extraHeaders
* @param string $method
*
* @return string
*
* @throws TokenResponseException
* @throws \InvalidArgumentException
*/
public function retrieveResponse(
UriInterface $endpoint,
$requestBody,
array $extraHeaders = array(),
$method = 'POST'
) {
// Normalize method name
$method = strtoupper($method);
$this->normalizeHeaders($extraHeaders);
if ($method === 'GET' && !empty($requestBody)) {
throw new \InvalidArgumentException('No body expected for "GET" request.');
}
if (!isset($extraHeaders['Content-Type']) && $method === 'POST' && is_array($requestBody)) {
$extraHeaders['Content-Type'] = 'Content-Type: application/x-www-form-urlencoded';
}
$extraHeaders['Host'] = 'Host: '.$endpoint->getHost();
$extraHeaders['Connection'] = 'Connection: close';
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $endpoint->getAbsoluteUri());
if ($method === 'POST' || $method === 'PUT') {
if ($requestBody && is_array($requestBody)) {
$requestBody = http_build_query($requestBody, '', '&');
}
if ($method === 'PUT') {
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'PUT');
} else {
curl_setopt($ch, CURLOPT_POST, true);
}
curl_setopt($ch, CURLOPT_POSTFIELDS, $requestBody);
} else {
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $method);
}
if ($this->maxRedirects > 0) {
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_MAXREDIRS, $this->maxRedirects);
}
curl_setopt($ch, CURLOPT_TIMEOUT, $this->timeout);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_HTTPHEADER, $extraHeaders);
curl_setopt($ch, CURLOPT_USERAGENT, $this->userAgent);
foreach ($this->parameters as $key => $value) {
curl_setopt($ch, $key, $value);
}
if ($this->forceSSL3) {
curl_setopt($ch, CURLOPT_SSLVERSION, 3);
}
$response = curl_exec($ch);
$responseCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
if (false === $response) {
$errNo = curl_errno($ch);
$errStr = curl_error($ch);
curl_close($ch);
if (empty($errStr)) {
throw new TokenResponseException('Failed to request resource.', $responseCode);
}
throw new TokenResponseException('cURL Error # '.$errNo.': '.$errStr, $responseCode);
}
curl_close($ch);
return $response;
}
}