www.aleph1.co.uk Git - yaffs-website/blob - vendor/guzzlehttp/guzzle/src/Handler/CurlFactory.php

   1 <?php
   2 namespace GuzzleHttp\Handler;
   3
   4 use GuzzleHttp\Exception\RequestException;
   5 use GuzzleHttp\Exception\ConnectException;
   6 use GuzzleHttp\Promise\FulfilledPromise;
   7 use GuzzleHttp\Promise\RejectedPromise;
   8 use GuzzleHttp\Psr7;
   9 use GuzzleHttp\Psr7\LazyOpenStream;
  10 use GuzzleHttp\TransferStats;
  11 use Psr\Http\Message\RequestInterface;
  12
  13 /**
  14  * Creates curl resources from a request
  15  */
  16 class CurlFactory implements CurlFactoryInterface
  17 {
  18     /** @var array */
  19     private $handles;
  20
  21     /** @var int Total number of idle handles to keep in cache */
  22     private $maxHandles;
  23
  24     /**
  25      * @param int $maxHandles Maximum number of idle handles.
  26      */
  27     public function __construct($maxHandles)
  28     {
  29         $this->maxHandles = $maxHandles;
  30     }
  31
  32     public function create(RequestInterface $request, array $options)
  33     {
  34         if (isset($options['curl']['body_as_string'])) {
  35             $options['_body_as_string'] = $options['curl']['body_as_string'];
  36             unset($options['curl']['body_as_string']);
  37         }
  38
  39         $easy = new EasyHandle;
  40         $easy->request = $request;
  41         $easy->options = $options;
  42         $conf = $this->getDefaultConf($easy);
  43         $this->applyMethod($easy, $conf);
  44         $this->applyHandlerOptions($easy, $conf);
  45         $this->applyHeaders($easy, $conf);
  46         unset($conf['_headers']);
  47
  48         // Add handler options from the request configuration options
  49         if (isset($options['curl'])) {
  50             $conf = array_replace($conf, $options['curl']);
  51         }
  52
  53         $conf[CURLOPT_HEADERFUNCTION] = $this->createHeaderFn($easy);
  54         $easy->handle = $this->handles
  55             ? array_pop($this->handles)
  56             : curl_init();
  57         curl_setopt_array($easy->handle, $conf);
  58
  59         return $easy;
  60     }
  61
  62     public function release(EasyHandle $easy)
  63     {
  64         $resource = $easy->handle;
  65         unset($easy->handle);
  66
  67         if (count($this->handles) >= $this->maxHandles) {
  68             curl_close($resource);
  69         } else {
  70             // Remove all callback functions as they can hold onto references
  71             // and are not cleaned up by curl_reset. Using curl_setopt_array
  72             // does not work for some reason, so removing each one
  73             // individually.
  74             curl_setopt($resource, CURLOPT_HEADERFUNCTION, null);
  75             curl_setopt($resource, CURLOPT_READFUNCTION, null);
  76             curl_setopt($resource, CURLOPT_WRITEFUNCTION, null);
  77             curl_setopt($resource, CURLOPT_PROGRESSFUNCTION, null);
  78             curl_reset($resource);
  79             $this->handles[] = $resource;
  80         }
  81     }
  82
  83     /**
  84      * Completes a cURL transaction, either returning a response promise or a
  85      * rejected promise.
  86      *
  87      * @param callable             $handler
  88      * @param EasyHandle           $easy
  89      * @param CurlFactoryInterface $factory Dictates how the handle is released
  90      *
  91      * @return \GuzzleHttp\Promise\PromiseInterface
  92      */
  93     public static function finish(
  94         callable $handler,
  95         EasyHandle $easy,
  96         CurlFactoryInterface $factory
  97     ) {
  98         if (isset($easy->options['on_stats'])) {
  99             self::invokeStats($easy);
 100         }
 101
 102         if (!$easy->response || $easy->errno) {
 103             return self::finishError($handler, $easy, $factory);
 104         }
 105
 106         // Return the response if it is present and there is no error.
 107         $factory->release($easy);
 108
 109         // Rewind the body of the response if possible.
 110         $body = $easy->response->getBody();
 111         if ($body->isSeekable()) {
 112             $body->rewind();
 113         }
 114
 115         return new FulfilledPromise($easy->response);
 116     }
 117
 118     private static function invokeStats(EasyHandle $easy)
 119     {
 120         $curlStats = curl_getinfo($easy->handle);
 121         $stats = new TransferStats(
 122             $easy->request,
 123             $easy->response,
 124             $curlStats['total_time'],
 125             $easy->errno,
 126             $curlStats
 127         );
 128         call_user_func($easy->options['on_stats'], $stats);
 129     }
 130
 131     private static function finishError(
 132         callable $handler,
 133         EasyHandle $easy,
 134         CurlFactoryInterface $factory
 135     ) {
 136         // Get error information and release the handle to the factory.
 137         $ctx = [
 138             'errno' => $easy->errno,
 139             'error' => curl_error($easy->handle),
 140         ] + curl_getinfo($easy->handle);
 141         $factory->release($easy);
 142
 143         // Retry when nothing is present or when curl failed to rewind.
 144         if (empty($easy->options['_err_message'])
 145             && (!$easy->errno || $easy->errno == 65)
 146         ) {
 147             return self::retryFailedRewind($handler, $easy, $ctx);
 148         }
 149
 150         return self::createRejection($easy, $ctx);
 151     }
 152
 153     private static function createRejection(EasyHandle $easy, array $ctx)
 154     {
 155         static $connectionErrors = [
 156             CURLE_OPERATION_TIMEOUTED  => true,
 157             CURLE_COULDNT_RESOLVE_HOST => true,
 158             CURLE_COULDNT_CONNECT      => true,
 159             CURLE_SSL_CONNECT_ERROR    => true,
 160             CURLE_GOT_NOTHING          => true,
 161         ];
 162
 163         // If an exception was encountered during the onHeaders event, then
 164         // return a rejected promise that wraps that exception.
 165         if ($easy->onHeadersException) {
 166             return new RejectedPromise(
 167                 new RequestException(
 168                     'An error was encountered during the on_headers event',
 169                     $easy->request,
 170                     $easy->response,
 171                     $easy->onHeadersException,
 172                     $ctx
 173                 )
 174             );
 175         }
 176
 177         $message = sprintf(
 178             'cURL error %s: %s (%s)',
 179             $ctx['errno'],
 180             $ctx['error'],
 181             'see http://curl.haxx.se/libcurl/c/libcurl-errors.html'
 182         );
 183
 184         // Create a connection exception if it was a specific error code.
 185         $error = isset($connectionErrors[$easy->errno])
 186             ? new ConnectException($message, $easy->request, null, $ctx)
 187             : new RequestException($message, $easy->request, $easy->response, null, $ctx);
 188
 189         return new RejectedPromise($error);
 190     }
 191
 192     private function getDefaultConf(EasyHandle $easy)
 193     {
 194         $conf = [
 195             '_headers'             => $easy->request->getHeaders(),
 196             CURLOPT_CUSTOMREQUEST  => $easy->request->getMethod(),
 197             CURLOPT_URL            => (string) $easy->request->getUri()->withFragment(''),
 198             CURLOPT_RETURNTRANSFER => false,
 199             CURLOPT_HEADER         => false,
 200             CURLOPT_CONNECTTIMEOUT => 150,
 201         ];
 202
 203         if (defined('CURLOPT_PROTOCOLS')) {
 204             $conf[CURLOPT_PROTOCOLS] = CURLPROTO_HTTP | CURLPROTO_HTTPS;
 205         }
 206
 207         $version = $easy->request->getProtocolVersion();
 208         if ($version == 1.1) {
 209             $conf[CURLOPT_HTTP_VERSION] = CURL_HTTP_VERSION_1_1;
 210         } elseif ($version == 2.0) {
 211             $conf[CURLOPT_HTTP_VERSION] = CURL_HTTP_VERSION_2_0;
 212         } else {
 213             $conf[CURLOPT_HTTP_VERSION] = CURL_HTTP_VERSION_1_0;
 214         }
 215
 216         return $conf;
 217     }
 218
 219     private function applyMethod(EasyHandle $easy, array &$conf)
 220     {
 221         $body = $easy->request->getBody();
 222         $size = $body->getSize();
 223
 224         if ($size === null || $size > 0) {
 225             $this->applyBody($easy->request, $easy->options, $conf);
 226             return;
 227         }
 228
 229         $method = $easy->request->getMethod();
 230         if ($method === 'PUT' || $method === 'POST') {
 231             // See http://tools.ietf.org/html/rfc7230#section-3.3.2
 232             if (!$easy->request->hasHeader('Content-Length')) {
 233                 $conf[CURLOPT_HTTPHEADER][] = 'Content-Length: 0';
 234             }
 235         } elseif ($method === 'HEAD') {
 236             $conf[CURLOPT_NOBODY] = true;
 237             unset(
 238                 $conf[CURLOPT_WRITEFUNCTION],
 239                 $conf[CURLOPT_READFUNCTION],
 240                 $conf[CURLOPT_FILE],
 241                 $conf[CURLOPT_INFILE]
 242             );
 243         }
 244     }
 245
 246     private function applyBody(RequestInterface $request, array $options, array &$conf)
 247     {
 248         $size = $request->hasHeader('Content-Length')
 249             ? (int) $request->getHeaderLine('Content-Length')
 250             : null;
 251
 252         // Send the body as a string if the size is less than 1MB OR if the
 253         // [curl][body_as_string] request value is set.
 254         if (($size !== null && $size < 1000000) ||
 255             !empty($options['_body_as_string'])
 256         ) {
 257             $conf[CURLOPT_POSTFIELDS] = (string) $request->getBody();
 258             // Don't duplicate the Content-Length header
 259             $this->removeHeader('Content-Length', $conf);
 260             $this->removeHeader('Transfer-Encoding', $conf);
 261         } else {
 262             $conf[CURLOPT_UPLOAD] = true;
 263             if ($size !== null) {
 264                 $conf[CURLOPT_INFILESIZE] = $size;
 265                 $this->removeHeader('Content-Length', $conf);
 266             }
 267             $body = $request->getBody();
 268             if ($body->isSeekable()) {
 269                 $body->rewind();
 270             }
 271             $conf[CURLOPT_READFUNCTION] = function ($ch, $fd, $length) use ($body) {
 272                 return $body->read($length);
 273             };
 274         }
 275
 276         // If the Expect header is not present, prevent curl from adding it
 277         if (!$request->hasHeader('Expect')) {
 278             $conf[CURLOPT_HTTPHEADER][] = 'Expect:';
 279         }
 280
 281         // cURL sometimes adds a content-type by default. Prevent this.
 282         if (!$request->hasHeader('Content-Type')) {
 283             $conf[CURLOPT_HTTPHEADER][] = 'Content-Type:';
 284         }
 285     }
 286
 287     private function applyHeaders(EasyHandle $easy, array &$conf)
 288     {
 289         foreach ($conf['_headers'] as $name => $values) {
 290             foreach ($values as $value) {
 291                 $conf[CURLOPT_HTTPHEADER][] = "$name: $value";
 292             }
 293         }
 294
 295         // Remove the Accept header if one was not set
 296         if (!$easy->request->hasHeader('Accept')) {
 297             $conf[CURLOPT_HTTPHEADER][] = 'Accept:';
 298         }
 299     }
 300
 301     /**
 302      * Remove a header from the options array.
 303      *
 304      * @param string $name    Case-insensitive header to remove
 305      * @param array  $options Array of options to modify
 306      */
 307     private function removeHeader($name, array &$options)
 308     {
 309         foreach (array_keys($options['_headers']) as $key) {
 310             if (!strcasecmp($key, $name)) {
 311                 unset($options['_headers'][$key]);
 312                 return;
 313             }
 314         }
 315     }
 316
 317     private function applyHandlerOptions(EasyHandle $easy, array &$conf)
 318     {
 319         $options = $easy->options;
 320         if (isset($options['verify'])) {
 321             if ($options['verify'] === false) {
 322                 unset($conf[CURLOPT_CAINFO]);
 323                 $conf[CURLOPT_SSL_VERIFYHOST] = 0;
 324                 $conf[CURLOPT_SSL_VERIFYPEER] = false;
 325             } else {
 326                 $conf[CURLOPT_SSL_VERIFYHOST] = 2;
 327                 $conf[CURLOPT_SSL_VERIFYPEER] = true;
 328                 if (is_string($options['verify'])) {
 329                     $conf[CURLOPT_CAINFO] = $options['verify'];
 330                     if (!file_exists($options['verify'])) {
 331                         throw new \InvalidArgumentException(
 332                             "SSL CA bundle not found: {$options['verify']}"
 333                         );
 334                     }
 335                 }
 336             }
 337         }
 338
 339         if (!empty($options['decode_content'])) {
 340             $accept = $easy->request->getHeaderLine('Accept-Encoding');
 341             if ($accept) {
 342                 $conf[CURLOPT_ENCODING] = $accept;
 343             } else {
 344                 $conf[CURLOPT_ENCODING] = '';
 345                 // Don't let curl send the header over the wire
 346                 $conf[CURLOPT_HTTPHEADER][] = 'Accept-Encoding:';
 347             }
 348         }
 349
 350         if (isset($options['sink'])) {
 351             $sink = $options['sink'];
 352             if (!is_string($sink)) {
 353                 $sink = \GuzzleHttp\Psr7\stream_for($sink);
 354             } elseif (!is_dir(dirname($sink))) {
 355                 // Ensure that the directory exists before failing in curl.
 356                 throw new \RuntimeException(sprintf(
 357                     'Directory %s does not exist for sink value of %s',
 358                     dirname($sink),
 359                     $sink
 360                 ));
 361             } else {
 362                 $sink = new LazyOpenStream($sink, 'w+');
 363             }
 364             $easy->sink = $sink;
 365             $conf[CURLOPT_WRITEFUNCTION] = function ($ch, $write) use ($sink) {
 366                 return $sink->write($write);
 367             };
 368         } else {
 369             // Use a default temp stream if no sink was set.
 370             $conf[CURLOPT_FILE] = fopen('php://temp', 'w+');
 371             $easy->sink = Psr7\stream_for($conf[CURLOPT_FILE]);
 372         }
 373
 374         if (isset($options['timeout'])) {
 375             $conf[CURLOPT_TIMEOUT_MS] = $options['timeout'] * 1000;
 376         }
 377
 378         if (isset($options['connect_timeout'])) {
 379             $conf[CURLOPT_CONNECTTIMEOUT_MS] = $options['connect_timeout'] * 1000;
 380         }
 381
 382         if (isset($options['proxy'])) {
 383             if (!is_array($options['proxy'])) {
 384                 $conf[CURLOPT_PROXY] = $options['proxy'];
 385             } else {
 386                 $scheme = $easy->request->getUri()->getScheme();
 387                 if (isset($options['proxy'][$scheme])) {
 388                     $host = $easy->request->getUri()->getHost();
 389                     if (!isset($options['proxy']['no']) ||
 390                         !\GuzzleHttp\is_host_in_noproxy($host, $options['proxy']['no'])
 391                     ) {
 392                         $conf[CURLOPT_PROXY] = $options['proxy'][$scheme];
 393                     }
 394                 }
 395             }
 396         }
 397
 398         if (isset($options['cert'])) {
 399             $cert = $options['cert'];
 400             if (is_array($cert)) {
 401                 $conf[CURLOPT_SSLCERTPASSWD] = $cert[1];
 402                 $cert = $cert[0];
 403             }
 404             if (!file_exists($cert)) {
 405                 throw new \InvalidArgumentException(
 406                     "SSL certificate not found: {$cert}"
 407                 );
 408             }
 409             $conf[CURLOPT_SSLCERT] = $cert;
 410         }
 411
 412         if (isset($options['ssl_key'])) {
 413             $sslKey = $options['ssl_key'];
 414             if (is_array($sslKey)) {
 415                 $conf[CURLOPT_SSLKEYPASSWD] = $sslKey[1];
 416                 $sslKey = $sslKey[0];
 417             }
 418             if (!file_exists($sslKey)) {
 419                 throw new \InvalidArgumentException(
 420                     "SSL private key not found: {$sslKey}"
 421                 );
 422             }
 423             $conf[CURLOPT_SSLKEY] = $sslKey;
 424         }
 425
 426         if (isset($options['progress'])) {
 427             $progress = $options['progress'];
 428             if (!is_callable($progress)) {
 429                 throw new \InvalidArgumentException(
 430                     'progress client option must be callable'
 431                 );
 432             }
 433             $conf[CURLOPT_NOPROGRESS] = false;
 434             $conf[CURLOPT_PROGRESSFUNCTION] = function () use ($progress) {
 435                 $args = func_get_args();
 436                 // PHP 5.5 pushed the handle onto the start of the args
 437                 if (is_resource($args[0])) {
 438                     array_shift($args);
 439                 }
 440                 call_user_func_array($progress, $args);
 441             };
 442         }
 443
 444         if (!empty($options['debug'])) {
 445             $conf[CURLOPT_STDERR] = \GuzzleHttp\debug_resource($options['debug']);
 446             $conf[CURLOPT_VERBOSE] = true;
 447         }
 448     }
 449
 450     /**
 451      * This function ensures that a response was set on a transaction. If one
 452      * was not set, then the request is retried if possible. This error
 453      * typically means you are sending a payload, curl encountered a
 454      * "Connection died, retrying a fresh connect" error, tried to rewind the
 455      * stream, and then encountered a "necessary data rewind wasn't possible"
 456      * error, causing the request to be sent through curl_multi_info_read()
 457      * without an error status.
 458      */
 459     private static function retryFailedRewind(
 460         callable $handler,
 461         EasyHandle $easy,
 462         array $ctx
 463     ) {
 464         try {
 465             // Only rewind if the body has been read from.
 466             $body = $easy->request->getBody();
 467             if ($body->tell() > 0) {
 468                 $body->rewind();
 469             }
 470         } catch (\RuntimeException $e) {
 471             $ctx['error'] = 'The connection unexpectedly failed without '
 472                 . 'providing an error. The request would have been retried, '
 473                 . 'but attempting to rewind the request body failed. '
 474                 . 'Exception: ' . $e;
 475             return self::createRejection($easy, $ctx);
 476         }
 477
 478         // Retry no more than 3 times before giving up.
 479         if (!isset($easy->options['_curl_retries'])) {
 480             $easy->options['_curl_retries'] = 1;
 481         } elseif ($easy->options['_curl_retries'] == 2) {
 482             $ctx['error'] = 'The cURL request was retried 3 times '
 483                 . 'and did not succeed. The most likely reason for the failure '
 484                 . 'is that cURL was unable to rewind the body of the request '
 485                 . 'and subsequent retries resulted in the same error. Turn on '
 486                 . 'the debug option to see what went wrong. See '
 487                 . 'https://bugs.php.net/bug.php?id=47204 for more information.';
 488             return self::createRejection($easy, $ctx);
 489         } else {
 490             $easy->options['_curl_retries']++;
 491         }
 492
 493         return $handler($easy->request, $easy->options);
 494     }
 495
 496     private function createHeaderFn(EasyHandle $easy)
 497     {
 498         if (isset($easy->options['on_headers'])) {
 499             $onHeaders = $easy->options['on_headers'];
 500
 501             if (!is_callable($onHeaders)) {
 502                 throw new \InvalidArgumentException('on_headers must be callable');
 503             }
 504         } else {
 505             $onHeaders = null;
 506         }
 507
 508         return function ($ch, $h) use (
 509             $onHeaders,
 510             $easy,
 511             &$startingResponse
 512         ) {
 513             $value = trim($h);
 514             if ($value === '') {
 515                 $startingResponse = true;
 516                 $easy->createResponse();
 517                 if ($onHeaders !== null) {
 518                     try {
 519                         $onHeaders($easy->response);
 520                     } catch (\Exception $e) {
 521                         // Associate the exception with the handle and trigger
 522                         // a curl header write error by returning 0.
 523                         $easy->onHeadersException = $e;
 524                         return -1;
 525                     }
 526                 }
 527             } elseif ($startingResponse) {
 528                 $startingResponse = false;
 529                 $easy->headers = [$value];
 530             } else {
 531                 $easy->headers[] = $value;
 532             }
 533             return strlen($h);
 534         };
 535     }
 536 }