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<?php
/**
* cURL HTTP transport
*
* @package Requests
* @subpackage Transport
*/
/**
* cURL HTTP transport
*
* @package Requests
* @subpackage Transport
*/
class Requests_Transport_cURL implements Requests_Transport {
/**
* Raw HTTP data
*
* @var string
*/
public $headers = '';
/**
* Information on the current request
*
* @var array cURL information array, see {@see http://php.net/curl_getinfo}
*/
public $info;
/**
* Version string
*
* @var string
*/
public $version;
/**
* cURL handle
*
* @var resource
*/
protected $fp;
/**
* Have we finished the headers yet?
*
* @var boolean
*/
protected $done_headers = false;
/**
* If streaming to a file, keep the file pointer
*
* @var resource
*/
protected $stream_handle;
/**
* Constructor
*/
public function __construct() {
$curl = curl_version();
$this->version = $curl['version'];
$this->fp = curl_init();
curl_setopt($this->fp, CURLOPT_HEADER, false);
curl_setopt($this->fp, CURLOPT_RETURNTRANSFER, 1);
if (version_compare($this->version, '7.10.5', '>=')) {
curl_setopt($this->fp, CURLOPT_ENCODING, '');
}
if (version_compare($this->version, '7.19.4', '>=')) {
curl_setopt($this->fp, CURLOPT_PROTOCOLS, CURLPROTO_HTTP | CURLPROTO_HTTPS);
}
}
/**
* Perform a request
*
* @throws Requests_Exception On a cURL error (`curlerror`)
*
* @param string $url URL to request
* @param array $headers Associative array of request headers
* @param string|array $data Data to send either as the POST body, or as parameters in the URL for a GET/HEAD
* @param array $options Request options, see {@see Requests::response()} for documentation
* @return string Raw HTTP result
*/
public function request($url, $headers = array(), $data = array(), $options = array()) {
$this->setup_handle($url, $headers, $data, $options);
$options['hooks']->dispatch('curl.before_send', array(&$this->fp));
if ($options['filename'] !== false) {
$this->stream_handle = fopen($options['filename'], 'wb');
curl_setopt($this->fp, CURLOPT_FILE, $this->stream_handle);
}
if (isset($options['verify'])) {
if ($options['verify'] === false) {
curl_setopt($this->fp, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($this->fp, CURLOPT_SSL_VERIFYPEER, 0);
} elseif (is_string($options['verify'])) {
curl_setopt($this->fp, CURLOPT_CAINFO, $options['verify']);
}
}
if (isset($options['verifyname']) && $options['verifyname'] === false) {
curl_setopt($this->fp, CURLOPT_SSL_VERIFYHOST, 0);
}
$response = curl_exec($this->fp);
$options['hooks']->dispatch('curl.after_send', array(&$fake_headers));
if (curl_errno($this->fp) === 23 || curl_errno($this->fp) === 61) {
curl_setopt($this->fp, CURLOPT_ENCODING, 'none');
$response = curl_exec($this->fp);
}
$this->process_response($response, $options);
return $this->headers;
}
/**
* Send multiple requests simultaneously
*
* @param array $requests Request data
* @param array $options Global options
* @return array Array of Requests_Response objects (may contain Requests_Exception or string responses as well)
*/
public function request_multiple($requests, $options) {
$multihandle = curl_multi_init();
$subrequests = array();
$subhandles = array();
$class = get_class($this);
foreach ($requests as $id => $request) {
$subrequests[$id] = new $class();
$subhandles[$id] = $subrequests[$id]->get_subrequest_handle($request['url'], $request['headers'], $request['data'], $request['options']);
$request['options']['hooks']->dispatch('curl.before_multi_add', array(&$subhandles[$id]));
curl_multi_add_handle($multihandle, $subhandles[$id]);
}
$completed = 0;
$responses = array();
$request['options']['hooks']->dispatch('curl.before_multi_exec', array(&$multihandle));
do {
$active = false;
do {
$status = curl_multi_exec($multihandle, $active);
}
while ($status === CURLM_CALL_MULTI_PERFORM);
$to_process = array();
// Read the information as needed
while ($done = curl_multi_info_read($multihandle)) {
$key = array_search($done['handle'], $subhandles, true);
if (!isset($to_process[$key])) {
$to_process[$key] = $done;
}
}
// Parse the finished requests before we start getting the new ones
foreach ($to_process as $key => $done) {
$options = $requests[$key]['options'];
$responses[$key] = $subrequests[$key]->process_response(curl_multi_getcontent($done['handle']), $options);
$options['hooks']->dispatch('transport.internal.parse_response', array(&$responses[$key], $requests[$key]));
curl_multi_remove_handle($multihandle, $done['handle']);
curl_close($done['handle']);
if (!is_string($responses[$key])) {
$options['hooks']->dispatch('multiple.request.complete', array(&$responses[$key], $key));
}
$completed++;
}
}
while ($active || $completed < count($subrequests));
$request['options']['hooks']->dispatch('curl.after_multi_exec', array(&$multihandle));
curl_multi_close($multihandle);
return $responses;
}
/**
* Get the cURL handle for use in a multi-request
*
* @param string $url URL to request
* @param array $headers Associative array of request headers
* @param string|array $data Data to send either as the POST body, or as parameters in the URL for a GET/HEAD
* @param array $options Request options, see {@see Requests::response()} for documentation
* @return resource Subrequest's cURL handle
*/
public function &get_subrequest_handle($url, $headers, $data, $options) {
$this->setup_handle($url, $headers, $data, $options);
if ($options['filename'] !== false) {
$this->stream_handle = fopen($options['filename'], 'wb');
curl_setopt($this->fp, CURLOPT_FILE, $this->stream_handle);
}
return $this->fp;
}
/**
* Setup the cURL handle for the given data
*
* @param string $url URL to request
* @param array $headers Associative array of request headers
* @param string|array $data Data to send either as the POST body, or as parameters in the URL for a GET/HEAD
* @param array $options Request options, see {@see Requests::response()} for documentation
*/
protected function setup_handle($url, $headers, $data, $options) {
$options['hooks']->dispatch('curl.before_request', array(&$this->fp));
$headers = Requests::flatten($headers);
if (in_array($options['type'], array(Requests::HEAD, Requests::GET, Requests::DELETE)) & !empty($data)) {
$url = self::format_get($url, $data);
}
elseif (!empty($data) && !is_string($data)) {
$data = http_build_query($data, null, '&');
}
switch ($options['type']) {
case Requests::POST:
curl_setopt($this->fp, CURLOPT_POST, true);
curl_setopt($this->fp, CURLOPT_POSTFIELDS, $data);
break;
case Requests::PATCH:
case Requests::PUT:
curl_setopt($this->fp, CURLOPT_CUSTOMREQUEST, $options['type']);
curl_setopt($this->fp, CURLOPT_POSTFIELDS, $data);
break;
case Requests::DELETE:
curl_setopt($this->fp, CURLOPT_CUSTOMREQUEST, 'DELETE');
break;
case Requests::HEAD:
curl_setopt($this->fp, CURLOPT_NOBODY, true);
break;
}
curl_setopt($this->fp, CURLOPT_URL, $url);
curl_setopt($this->fp, CURLOPT_TIMEOUT, $options['timeout']);
curl_setopt($this->fp, CURLOPT_CONNECTTIMEOUT, $options['timeout']);
curl_setopt($this->fp, CURLOPT_REFERER, $url);
curl_setopt($this->fp, CURLOPT_USERAGENT, $options['useragent']);
curl_setopt($this->fp, CURLOPT_HTTPHEADER, $headers);
if (true === $options['blocking']) {
curl_setopt($this->fp, CURLOPT_HEADERFUNCTION, array(&$this, 'stream_headers'));
}
}
public function process_response($response, $options) {
if ($options['blocking'] === false) {
curl_close($this->fp);
$fake_headers = '';
$options['hooks']->dispatch('curl.after_request', array(&$fake_headers));
return false;
}
if ($options['filename'] !== false) {
fclose($this->stream_handle);
$this->headers = trim($this->headers);
}
else {
$this->headers .= $response;
}
if (curl_errno($this->fp)) {
throw new Requests_Exception('cURL error ' . curl_errno($this->fp) . ': ' . curl_error($this->fp), 'curlerror', $this->fp);
return;
}
$this->info = curl_getinfo($this->fp);
curl_close($this->fp);
$options['hooks']->dispatch('curl.after_request', array(&$this->headers));
return $this->headers;
}
/**
* Collect the headers as they are received
*
* @param resource $handle cURL resource
* @param string $headers Header string
* @return integer Length of provided header
*/
protected function stream_headers($handle, $headers) {
// Why do we do this? cURL will send both the final response and any
// interim responses, such as a 100 Continue. We don't need that.
// (We may want to keep this somewhere just in case)
if ($this->done_headers) {
$this->headers = '';
$this->done_headers = false;
}
$this->headers .= $headers;
if ($headers === "\r\n") {
$this->done_headers = true;
}
return strlen($headers);
}
/**
* Format a URL given GET data
*
* @param string $url
* @param array|object $data Data to build query using, see {@see http://php.net/http_build_query}
* @return string URL with data
*/
protected static function format_get($url, $data) {
if (!empty($data)) {
$url_parts = parse_url($url);
if (empty($url_parts['query'])) {
$query = $url_parts['query'] = '';
}
else {
$query = $url_parts['query'];
}
$query .= '&' . http_build_query($data, null, '&');
$query = trim($query, '&');
if (empty($url_parts['query'])) {
$url .= '?' . $query;
}
else {
$url = str_replace($url_parts['query'], $query, $url);
}
}
return $url;
}
/**
* Whether this transport is valid
*
* @codeCoverageIgnore
* @return boolean True if the transport is valid, false otherwise.
*/
public static function test() {
return (function_exists('curl_init') && function_exists('curl_exec'));
}
}
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