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| 1 | <?php |
| 2 | /** |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License as published by |
| 5 | * the Free Software Foundation; either version 2 of the License, or |
| 6 | * (at your option) any later version. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
| 13 | * You should have received a copy of the GNU General Public License along |
| 14 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 16 | * http://www.gnu.org/copyleft/gpl.html |
| 17 | * |
| 18 | * @file |
| 19 | */ |
| 20 | |
| 21 | use MediaWiki\MainConfigNames; |
| 22 | use MediaWiki\MediaWikiServices; |
| 23 | use MediaWiki\Request\WebRequest; |
| 24 | use MediaWiki\Status\Status; |
| 25 | use MediaWiki\Utils\UrlUtils; |
| 26 | use Psr\Log\LoggerAwareInterface; |
| 27 | use Psr\Log\LoggerInterface; |
| 28 | use Psr\Log\NullLogger; |
| 29 | use Wikimedia\Http\TelemetryHeadersInterface; |
| 30 | |
| 31 | /** |
| 32 | * This wrapper class will call out to curl (if available) or fallback |
| 33 | * to regular PHP if necessary for handling internal HTTP requests. |
| 34 | * |
| 35 | * Renamed from HttpRequest to MWHttpRequest to avoid conflict with |
| 36 | * PHP's HTTP extension. |
| 37 | */ |
| 38 | abstract class MWHttpRequest implements LoggerAwareInterface { |
| 39 | public const SUPPORTS_FILE_POSTS = false; |
| 40 | |
| 41 | /** |
| 42 | * @var int|string |
| 43 | */ |
| 44 | protected $timeout = 'default'; |
| 45 | |
| 46 | /** @var string|null */ |
| 47 | protected $content; |
| 48 | /** @var bool|null */ |
| 49 | protected $headersOnly = null; |
| 50 | /** @var array|null */ |
| 51 | protected $postData = null; |
| 52 | /** @var string|null */ |
| 53 | protected $proxy = null; |
| 54 | /** @var bool */ |
| 55 | protected $noProxy = false; |
| 56 | /** @var bool */ |
| 57 | protected $sslVerifyHost = true; |
| 58 | /** @var bool */ |
| 59 | protected $sslVerifyCert = true; |
| 60 | /** @var string|null */ |
| 61 | protected $caInfo = null; |
| 62 | /** @var string */ |
| 63 | protected $method = "GET"; |
| 64 | /** @var array */ |
| 65 | protected $reqHeaders = []; |
| 66 | /** @var string */ |
| 67 | protected $url; |
| 68 | /** @var array|false */ |
| 69 | protected $parsedUrl; |
| 70 | /** @var callable */ |
| 71 | protected $callback; |
| 72 | /** @var int */ |
| 73 | protected $maxRedirects = 5; |
| 74 | /** @var bool */ |
| 75 | protected $followRedirects = false; |
| 76 | /** @var int */ |
| 77 | protected $connectTimeout; |
| 78 | |
| 79 | /** |
| 80 | * @var CookieJar |
| 81 | */ |
| 82 | protected $cookieJar; |
| 83 | |
| 84 | /** @var array */ |
| 85 | protected $headerList = []; |
| 86 | /** @var string */ |
| 87 | protected $respVersion = "0.9"; |
| 88 | /** @var string */ |
| 89 | protected $respStatus = "200 Ok"; |
| 90 | /** @var string[][] */ |
| 91 | protected $respHeaders = []; |
| 92 | |
| 93 | /** @var StatusValue */ |
| 94 | protected $status; |
| 95 | |
| 96 | /** |
| 97 | * @var Profiler |
| 98 | */ |
| 99 | protected $profiler; |
| 100 | |
| 101 | /** |
| 102 | * @var string |
| 103 | */ |
| 104 | protected $profileName; |
| 105 | |
| 106 | /** |
| 107 | * @var LoggerInterface |
| 108 | */ |
| 109 | protected $logger; |
| 110 | |
| 111 | private UrlUtils $urlUtils; |
| 112 | |
| 113 | /** |
| 114 | * @param string $url Url to use. If protocol-relative, will be expanded to an http:// URL |
| 115 | * @param array $options extra params to pass (see HttpRequestFactory::create()) |
| 116 | * @phpcs:ignore Generic.Files.LineLength |
| 117 | * @phan-param array{timeout?:int|string,connectTimeout?:int|string,postData?:array,proxy?:string,noProxy?:bool,sslVerifyHost?:bool,sslVerifyCert?:bool,caInfo?:string,maxRedirects?:int,followRedirects?:bool,userAgent?:string,logger?:LoggerInterface,username?:string,password?:string,originalRequest?:WebRequest|array{ip:string,userAgent:string},method?:string} $options |
| 118 | * @param string $caller The method making this request, for profiling @phan-mandatory-param |
| 119 | * @param Profiler|null $profiler An instance of the profiler for profiling, or null |
| 120 | * @throws Exception |
| 121 | */ |
| 122 | public function __construct( |
| 123 | $url, array $options, $caller = __METHOD__, ?Profiler $profiler = null |
| 124 | ) { |
| 125 | $this->urlUtils = MediaWikiServices::getInstance()->getUrlUtils(); |
| 126 | if ( !array_key_exists( 'timeout', $options ) |
| 127 | || !array_key_exists( 'connectTimeout', $options ) ) { |
| 128 | throw new InvalidArgumentException( "timeout and connectionTimeout options are required" ); |
| 129 | } |
| 130 | $this->url = $this->urlUtils->expand( $url, PROTO_HTTP ) ?? false; |
| 131 | $this->parsedUrl = $this->urlUtils->parse( (string)$this->url ) ?? false; |
| 132 | |
| 133 | $this->logger = $options['logger'] ?? new NullLogger(); |
| 134 | $this->timeout = $options['timeout']; |
| 135 | $this->connectTimeout = $options['connectTimeout']; |
| 136 | |
| 137 | if ( !$this->parsedUrl || !self::isValidURI( $this->url ) ) { |
| 138 | $this->status = StatusValue::newFatal( 'http-invalid-url', $url ); |
| 139 | } else { |
| 140 | $this->status = StatusValue::newGood( 100 ); // continue |
| 141 | } |
| 142 | |
| 143 | if ( isset( $options['userAgent'] ) ) { |
| 144 | $this->setUserAgent( $options['userAgent'] ); |
| 145 | } |
| 146 | if ( isset( $options['username'] ) && isset( $options['password'] ) ) { |
| 147 | $this->setHeader( |
| 148 | 'Authorization', |
| 149 | 'Basic ' . base64_encode( $options['username'] . ':' . $options['password'] ) |
| 150 | ); |
| 151 | } |
| 152 | if ( isset( $options['originalRequest'] ) ) { |
| 153 | $this->setOriginalRequest( $options['originalRequest'] ); |
| 154 | } |
| 155 | |
| 156 | $members = [ "postData", "proxy", "noProxy", "sslVerifyHost", "caInfo", |
| 157 | "method", "followRedirects", "maxRedirects", "sslVerifyCert", "callback" ]; |
| 158 | |
| 159 | foreach ( $members as $o ) { |
| 160 | if ( isset( $options[$o] ) ) { |
| 161 | // ensure that MWHttpRequest::method is always |
| 162 | // uppercased. T38137 |
| 163 | if ( $o == 'method' ) { |
| 164 | // @phan-suppress-next-line PhanTypePossiblyInvalidDimOffset False positive |
| 165 | $options[$o] = strtoupper( $options[$o] ); |
| 166 | } |
| 167 | $this->$o = $options[$o]; |
| 168 | } |
| 169 | } |
| 170 | |
| 171 | if ( $this->noProxy ) { |
| 172 | $this->proxy = ''; // noProxy takes precedence |
| 173 | } |
| 174 | |
| 175 | // Profile based on what's calling us |
| 176 | $this->profiler = $profiler; |
| 177 | $this->profileName = $caller; |
| 178 | } |
| 179 | |
| 180 | public function setLogger( LoggerInterface $logger ) { |
| 181 | $this->logger = $logger; |
| 182 | } |
| 183 | |
| 184 | /** |
| 185 | * Simple function to test if we can make any sort of requests at all, using |
| 186 | * cURL or fopen() |
| 187 | * @return bool |
| 188 | */ |
| 189 | public static function canMakeRequests() { |
| 190 | return function_exists( 'curl_init' ) || wfIniGetBool( 'allow_url_fopen' ); |
| 191 | } |
| 192 | |
| 193 | /** |
| 194 | * Get the body, or content, of the response to the request |
| 195 | * |
| 196 | * @return string |
| 197 | */ |
| 198 | public function getContent() { |
| 199 | return $this->content; |
| 200 | } |
| 201 | |
| 202 | /** |
| 203 | * Set the parameters of the request |
| 204 | * |
| 205 | * @param array $args |
| 206 | * @todo overload the args param |
| 207 | */ |
| 208 | public function setData( array $args ) { |
| 209 | $this->postData = $args; |
| 210 | } |
| 211 | |
| 212 | /** |
| 213 | * Add Telemetry information to the request |
| 214 | * |
| 215 | * @param TelemetryHeadersInterface $telemetry |
| 216 | * @return void |
| 217 | */ |
| 218 | public function addTelemetry( TelemetryHeadersInterface $telemetry ): void { |
| 219 | foreach ( $telemetry->getRequestHeaders() as $header => $value ) { |
| 220 | $this->setHeader( $header, $value ); |
| 221 | } |
| 222 | } |
| 223 | |
| 224 | /** |
| 225 | * Take care of setting up the proxy (do nothing if "noProxy" is set) |
| 226 | * |
| 227 | * @return void |
| 228 | */ |
| 229 | protected function proxySetup() { |
| 230 | $httpProxy = MediaWikiServices::getInstance()->getMainConfig()->get( |
| 231 | MainConfigNames::HTTPProxy ); |
| 232 | $localHTTPProxy = MediaWikiServices::getInstance()->getMainConfig()->get( |
| 233 | MainConfigNames::LocalHTTPProxy ); |
| 234 | // If proxies are disabled, clear any other proxy |
| 235 | if ( $this->noProxy ) { |
| 236 | $this->proxy = ''; |
| 237 | return; |
| 238 | } |
| 239 | |
| 240 | // If there is an explicit proxy already set, use it |
| 241 | if ( $this->proxy ) { |
| 242 | return; |
| 243 | } |
| 244 | |
| 245 | // Otherwise, fallback to $wgLocalHTTPProxy for local URLs |
| 246 | // or $wgHTTPProxy for everything else |
| 247 | if ( self::isLocalURL( $this->url ) ) { |
| 248 | if ( $localHTTPProxy !== false ) { |
| 249 | $this->setReverseProxy( $localHTTPProxy ); |
| 250 | } |
| 251 | } else { |
| 252 | $this->proxy = (string)$httpProxy; |
| 253 | } |
| 254 | } |
| 255 | |
| 256 | /** |
| 257 | * Enable use of a reverse proxy in which the hostname is |
| 258 | * passed as a "Host" header, and the request is sent to the |
| 259 | * proxy's host:port instead. |
| 260 | * |
| 261 | * Note that any custom port in the request URL will be lost |
| 262 | * and cookies and redirects may not work properly. |
| 263 | * |
| 264 | * @param string $proxy URL of proxy |
| 265 | */ |
| 266 | protected function setReverseProxy( string $proxy ) { |
| 267 | $parsedProxy = $this->urlUtils->parse( $proxy ); |
| 268 | if ( $parsedProxy === null ) { |
| 269 | throw new InvalidArgumentException( "Invalid reverseProxy configured: $proxy" ); |
| 270 | } |
| 271 | // Set the current host in the Host header |
| 272 | $this->setHeader( 'Host', $this->parsedUrl['host'] ); |
| 273 | // Replace scheme, host and port in the request |
| 274 | $this->parsedUrl['scheme'] = $parsedProxy['scheme']; |
| 275 | $this->parsedUrl['host'] = $parsedProxy['host']; |
| 276 | if ( isset( $parsedProxy['port'] ) ) { |
| 277 | $this->parsedUrl['port'] = $parsedProxy['port']; |
| 278 | } else { |
| 279 | unset( $this->parsedUrl['port'] ); |
| 280 | } |
| 281 | $this->url = UrlUtils::assemble( $this->parsedUrl ); |
| 282 | // Mark that we're already using a proxy |
| 283 | $this->noProxy = true; |
| 284 | } |
| 285 | |
| 286 | /** |
| 287 | * Check if the URL can be served by a local endpoint |
| 288 | * |
| 289 | * @param string $url Full url to check |
| 290 | * @return bool |
| 291 | */ |
| 292 | private static function isLocalURL( $url ) { |
| 293 | $localVirtualHosts = MediaWikiServices::getInstance()->getMainConfig()->get( |
| 294 | MainConfigNames::LocalVirtualHosts ); |
| 295 | |
| 296 | // Extract host part |
| 297 | $matches = []; |
| 298 | if ( preg_match( '!^https?://([\w.-]+)[/:].*$!', $url, $matches ) ) { |
| 299 | $host = $matches[1]; |
| 300 | // Split up dotwise |
| 301 | $domainParts = explode( '.', $host ); |
| 302 | // Check if this domain or any superdomain is listed as a local virtual host |
| 303 | $domainParts = array_reverse( $domainParts ); |
| 304 | |
| 305 | $domain = ''; |
| 306 | $countParts = count( $domainParts ); |
| 307 | for ( $i = 0; $i < $countParts; $i++ ) { |
| 308 | $domainPart = $domainParts[$i]; |
| 309 | if ( $i == 0 ) { |
| 310 | $domain = $domainPart; |
| 311 | } else { |
| 312 | $domain = $domainPart . '.' . $domain; |
| 313 | } |
| 314 | |
| 315 | if ( in_array( $domain, $localVirtualHosts ) ) { |
| 316 | return true; |
| 317 | } |
| 318 | } |
| 319 | } |
| 320 | |
| 321 | return false; |
| 322 | } |
| 323 | |
| 324 | /** |
| 325 | * @param string $UA |
| 326 | */ |
| 327 | public function setUserAgent( $UA ) { |
| 328 | $this->setHeader( 'User-Agent', $UA ); |
| 329 | } |
| 330 | |
| 331 | /** |
| 332 | * Set an arbitrary header |
| 333 | * @param string $name |
| 334 | * @param string $value |
| 335 | */ |
| 336 | public function setHeader( $name, $value ) { |
| 337 | // I feel like I should normalize the case here... |
| 338 | $this->reqHeaders[$name] = $value; |
| 339 | } |
| 340 | |
| 341 | /** |
| 342 | * Get an array of the headers |
| 343 | * @return array |
| 344 | */ |
| 345 | protected function getHeaderList() { |
| 346 | $list = []; |
| 347 | |
| 348 | if ( $this->cookieJar ) { |
| 349 | $this->reqHeaders['Cookie'] = |
| 350 | $this->cookieJar->serializeToHttpRequest( |
| 351 | $this->parsedUrl['path'], |
| 352 | $this->parsedUrl['host'] |
| 353 | ); |
| 354 | } |
| 355 | |
| 356 | foreach ( $this->reqHeaders as $name => $value ) { |
| 357 | $list[] = "$name: $value"; |
| 358 | } |
| 359 | |
| 360 | return $list; |
| 361 | } |
| 362 | |
| 363 | /** |
| 364 | * Set a read callback to accept data read from the HTTP request. |
| 365 | * By default, data is appended to an internal buffer which can be |
| 366 | * retrieved through $req->getContent(). |
| 367 | * |
| 368 | * To handle data as it comes in -- especially for large files that |
| 369 | * would not fit in memory -- you can instead set your own callback, |
| 370 | * in the form function($resource, $buffer) where the first parameter |
| 371 | * is the low-level resource being read (implementation specific), |
| 372 | * and the second parameter is the data buffer. |
| 373 | * |
| 374 | * You MUST return the number of bytes handled in the buffer; if fewer |
| 375 | * bytes are reported handled than were passed to you, the HTTP fetch |
| 376 | * will be aborted. |
| 377 | * |
| 378 | * @param callable|null $callback |
| 379 | * @throws InvalidArgumentException |
| 380 | */ |
| 381 | public function setCallback( $callback ) { |
| 382 | $this->doSetCallback( $callback ); |
| 383 | } |
| 384 | |
| 385 | /** |
| 386 | * Worker function for setting callbacks. Calls can originate both internally and externally |
| 387 | * via setCallback). Defaults to the internal read callback if $callback is null. |
| 388 | * |
| 389 | * @param callable|null $callback |
| 390 | * @throws InvalidArgumentException |
| 391 | */ |
| 392 | protected function doSetCallback( $callback ) { |
| 393 | if ( $callback === null ) { |
| 394 | $callback = [ $this, 'read' ]; |
| 395 | } elseif ( !is_callable( $callback ) ) { |
| 396 | $this->status->fatal( 'http-internal-error' ); |
| 397 | throw new InvalidArgumentException( __METHOD__ . ': invalid callback' ); |
| 398 | } |
| 399 | $this->callback = $callback; |
| 400 | } |
| 401 | |
| 402 | /** |
| 403 | * A generic callback to read the body of the response from a remote |
| 404 | * server. |
| 405 | * |
| 406 | * @param resource $fh |
| 407 | * @param string $content |
| 408 | * @return int |
| 409 | * @internal |
| 410 | */ |
| 411 | public function read( $fh, $content ) { |
| 412 | $this->content .= $content; |
| 413 | return strlen( $content ); |
| 414 | } |
| 415 | |
| 416 | /** |
| 417 | * Take care of whatever is necessary to perform the URI request. |
| 418 | * |
| 419 | * @return Status |
| 420 | * @note currently returns Status for B/C |
| 421 | */ |
| 422 | public function execute() { |
| 423 | throw new LogicException( 'children must override this' ); |
| 424 | } |
| 425 | |
| 426 | protected function prepare() { |
| 427 | $this->content = ""; |
| 428 | |
| 429 | if ( strtoupper( $this->method ) == "HEAD" ) { |
| 430 | $this->headersOnly = true; |
| 431 | } |
| 432 | |
| 433 | $this->proxySetup(); // set up any proxy as needed |
| 434 | |
| 435 | if ( !$this->callback ) { |
| 436 | $this->doSetCallback( null ); |
| 437 | } |
| 438 | |
| 439 | if ( !isset( $this->reqHeaders['User-Agent'] ) ) { |
| 440 | $http = MediaWikiServices::getInstance()->getHttpRequestFactory(); |
| 441 | $this->setUserAgent( $http->getUserAgent() ); |
| 442 | } |
| 443 | } |
| 444 | |
| 445 | /** |
| 446 | * Parses the headers, including the HTTP status code and any |
| 447 | * Set-Cookie headers. This function expects the headers to be |
| 448 | * found in an array in the member variable headerList. |
| 449 | */ |
| 450 | protected function parseHeader() { |
| 451 | $lastname = ""; |
| 452 | |
| 453 | // Failure without (valid) headers gets a response status of zero |
| 454 | if ( !$this->status->isOK() ) { |
| 455 | $this->respStatus = '0 Error'; |
| 456 | } |
| 457 | |
| 458 | foreach ( $this->headerList as $header ) { |
| 459 | if ( preg_match( "#^HTTP/([0-9.]+) (.*)#", $header, $match ) ) { |
| 460 | $this->respVersion = $match[1]; |
| 461 | $this->respStatus = $match[2]; |
| 462 | } elseif ( preg_match( "#^[ \t]#", $header ) ) { |
| 463 | $last = count( $this->respHeaders[$lastname] ) - 1; |
| 464 | $this->respHeaders[$lastname][$last] .= "\r\n$header"; |
| 465 | } elseif ( preg_match( "#^([^:]*):[\t ]*(.*)#", $header, $match ) ) { |
| 466 | $this->respHeaders[strtolower( $match[1] )][] = $match[2]; |
| 467 | $lastname = strtolower( $match[1] ); |
| 468 | } |
| 469 | } |
| 470 | |
| 471 | $this->parseCookies(); |
| 472 | } |
| 473 | |
| 474 | /** |
| 475 | * Sets HTTPRequest status member to a fatal value with the error |
| 476 | * message if the returned integer value of the status code was |
| 477 | * not successful (1-299) or a redirect (300-399). |
| 478 | * See RFC2616, section 10, http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html |
| 479 | * for a list of status codes. |
| 480 | */ |
| 481 | protected function setStatus() { |
| 482 | if ( !$this->respHeaders ) { |
| 483 | $this->parseHeader(); |
| 484 | } |
| 485 | |
| 486 | if ( (int)$this->respStatus > 0 && (int)$this->respStatus < 400 ) { |
| 487 | $this->status->setResult( true, (int)$this->respStatus ); |
| 488 | } else { |
| 489 | [ $code, $message ] = explode( " ", $this->respStatus, 2 ); |
| 490 | $this->status->setResult( false, (int)$this->respStatus ); |
| 491 | $this->status->fatal( "http-bad-status", $code, $message ); |
| 492 | } |
| 493 | } |
| 494 | |
| 495 | /** |
| 496 | * Get the integer value of the HTTP status code (e.g. 200 for "200 Ok") |
| 497 | * (see RFC2616, section 10, http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html |
| 498 | * for a list of status codes.) |
| 499 | * |
| 500 | * @return int |
| 501 | */ |
| 502 | public function getStatus() { |
| 503 | if ( !$this->respHeaders ) { |
| 504 | $this->parseHeader(); |
| 505 | } |
| 506 | |
| 507 | return (int)$this->respStatus; |
| 508 | } |
| 509 | |
| 510 | /** |
| 511 | * Returns true if the last status code was a redirect. |
| 512 | * |
| 513 | * @return bool |
| 514 | */ |
| 515 | public function isRedirect() { |
| 516 | if ( !$this->respHeaders ) { |
| 517 | $this->parseHeader(); |
| 518 | } |
| 519 | |
| 520 | $status = (int)$this->respStatus; |
| 521 | |
| 522 | if ( $status >= 300 && $status <= 303 ) { |
| 523 | return true; |
| 524 | } |
| 525 | |
| 526 | return false; |
| 527 | } |
| 528 | |
| 529 | /** |
| 530 | * Returns an associative array of response headers after the |
| 531 | * request has been executed. Because some headers |
| 532 | * (e.g. Set-Cookie) can appear more than once the, each value of |
| 533 | * the associative array is an array of the values given. |
| 534 | * Header names are always in lowercase. |
| 535 | * |
| 536 | * @return array |
| 537 | */ |
| 538 | public function getResponseHeaders() { |
| 539 | if ( !$this->respHeaders ) { |
| 540 | $this->parseHeader(); |
| 541 | } |
| 542 | |
| 543 | return $this->respHeaders; |
| 544 | } |
| 545 | |
| 546 | /** |
| 547 | * Returns the value of the given response header. |
| 548 | * |
| 549 | * @param string $header case-insensitive |
| 550 | * @return string|null |
| 551 | */ |
| 552 | public function getResponseHeader( $header ) { |
| 553 | if ( !$this->respHeaders ) { |
| 554 | $this->parseHeader(); |
| 555 | } |
| 556 | |
| 557 | if ( isset( $this->respHeaders[strtolower( $header )] ) ) { |
| 558 | $v = $this->respHeaders[strtolower( $header )]; |
| 559 | return $v[count( $v ) - 1]; |
| 560 | } |
| 561 | |
| 562 | return null; |
| 563 | } |
| 564 | |
| 565 | /** |
| 566 | * Tells the MWHttpRequest object to use this pre-loaded CookieJar. |
| 567 | * |
| 568 | * To read response cookies from the jar, getCookieJar must be called first. |
| 569 | */ |
| 570 | public function setCookieJar( CookieJar $jar ) { |
| 571 | $this->cookieJar = $jar; |
| 572 | } |
| 573 | |
| 574 | /** |
| 575 | * Returns the cookie jar in use. |
| 576 | * |
| 577 | * @return CookieJar |
| 578 | */ |
| 579 | public function getCookieJar() { |
| 580 | if ( !$this->respHeaders ) { |
| 581 | $this->parseHeader(); |
| 582 | } |
| 583 | |
| 584 | return $this->cookieJar; |
| 585 | } |
| 586 | |
| 587 | /** |
| 588 | * Sets a cookie. Used before a request to set up any individual |
| 589 | * cookies. Used internally after a request to parse the |
| 590 | * Set-Cookie headers. |
| 591 | * @see Cookie::set |
| 592 | * @param string $name |
| 593 | * @param string $value |
| 594 | * @param array $attr |
| 595 | */ |
| 596 | public function setCookie( $name, $value, array $attr = [] ) { |
| 597 | if ( !$this->cookieJar ) { |
| 598 | $this->cookieJar = new CookieJar; |
| 599 | } |
| 600 | |
| 601 | if ( $this->parsedUrl && !isset( $attr['domain'] ) ) { |
| 602 | $attr['domain'] = $this->parsedUrl['host']; |
| 603 | } |
| 604 | |
| 605 | $this->cookieJar->setCookie( $name, $value, $attr ); |
| 606 | } |
| 607 | |
| 608 | /** |
| 609 | * Parse the cookies in the response headers and store them in the cookie jar. |
| 610 | */ |
| 611 | protected function parseCookies() { |
| 612 | if ( !$this->cookieJar ) { |
| 613 | $this->cookieJar = new CookieJar; |
| 614 | } |
| 615 | |
| 616 | if ( isset( $this->respHeaders['set-cookie'] ) ) { |
| 617 | $url = parse_url( $this->getFinalUrl() ); |
| 618 | if ( !isset( $url['host'] ) ) { |
| 619 | $this->status->fatal( 'http-invalid-url', $this->getFinalUrl() ); |
| 620 | } else { |
| 621 | foreach ( $this->respHeaders['set-cookie'] as $cookie ) { |
| 622 | $this->cookieJar->parseCookieResponseHeader( $cookie, $url['host'] ); |
| 623 | } |
| 624 | } |
| 625 | } |
| 626 | } |
| 627 | |
| 628 | /** |
| 629 | * Returns the final URL after all redirections. |
| 630 | * |
| 631 | * Relative values of the "Location" header are incorrect as |
| 632 | * stated in RFC, however they do happen and modern browsers |
| 633 | * support them. This function loops backwards through all |
| 634 | * locations in order to build the proper absolute URI - Marooned |
| 635 | * at wikia-inc.com |
| 636 | * |
| 637 | * Note that the multiple Location: headers are an artifact of |
| 638 | * CURL -- they shouldn't actually get returned this way. Rewrite |
| 639 | * this when T31232 is taken care of (high-level redirect |
| 640 | * handling rewrite). |
| 641 | * |
| 642 | * @return string |
| 643 | */ |
| 644 | public function getFinalUrl() { |
| 645 | $headers = $this->getResponseHeaders(); |
| 646 | |
| 647 | // return full url (fix for incorrect but handled relative location) |
| 648 | if ( isset( $headers['location'] ) ) { |
| 649 | $locations = $headers['location']; |
| 650 | $domain = ''; |
| 651 | $foundRelativeURI = false; |
| 652 | $countLocations = count( $locations ); |
| 653 | |
| 654 | for ( $i = $countLocations - 1; $i >= 0; $i-- ) { |
| 655 | $url = parse_url( $locations[$i] ); |
| 656 | |
| 657 | if ( isset( $url['scheme'] ) && isset( $url['host'] ) ) { |
| 658 | $domain = $url['scheme'] . '://' . $url['host']; |
| 659 | break; // found correct URI (with host) |
| 660 | } else { |
| 661 | $foundRelativeURI = true; |
| 662 | } |
| 663 | } |
| 664 | |
| 665 | if ( !$foundRelativeURI ) { |
| 666 | return $locations[$countLocations - 1]; |
| 667 | } |
| 668 | if ( $domain ) { |
| 669 | return $domain . $locations[$countLocations - 1]; |
| 670 | } |
| 671 | $url = parse_url( $this->url ); |
| 672 | if ( isset( $url['scheme'] ) && isset( $url['host'] ) ) { |
| 673 | return $url['scheme'] . '://' . $url['host'] . |
| 674 | $locations[$countLocations - 1]; |
| 675 | } |
| 676 | } |
| 677 | |
| 678 | return $this->url; |
| 679 | } |
| 680 | |
| 681 | /** |
| 682 | * Returns true if the backend can follow redirects. Overridden by the |
| 683 | * child classes. |
| 684 | * @return bool |
| 685 | */ |
| 686 | public function canFollowRedirects() { |
| 687 | return true; |
| 688 | } |
| 689 | |
| 690 | /** |
| 691 | * Set information about the original request. This can be useful for |
| 692 | * endpoints/API modules which act as a proxy for some service, and |
| 693 | * throttling etc. needs to happen in that service. |
| 694 | * Calling this will result in the X-Forwarded-For and X-Original-User-Agent |
| 695 | * headers being set. |
| 696 | * @param WebRequest|array $originalRequest When in array form, it's |
| 697 | * expected to have the keys 'ip' and 'userAgent'. |
| 698 | * @note IP/user agent is personally identifiable information, and should |
| 699 | * only be set when the privacy policy of the request target is |
| 700 | * compatible with that of the MediaWiki installation. |
| 701 | */ |
| 702 | public function setOriginalRequest( $originalRequest ) { |
| 703 | if ( $originalRequest instanceof WebRequest ) { |
| 704 | $originalRequest = [ |
| 705 | 'ip' => $originalRequest->getIP(), |
| 706 | 'userAgent' => $originalRequest->getHeader( 'User-Agent' ), |
| 707 | ]; |
| 708 | } elseif ( |
| 709 | !is_array( $originalRequest ) |
| 710 | || array_diff( [ 'ip', 'userAgent' ], array_keys( $originalRequest ) ) |
| 711 | ) { |
| 712 | throw new InvalidArgumentException( __METHOD__ . ': $originalRequest must be a ' |
| 713 | . "WebRequest or an array with 'ip' and 'userAgent' keys" ); |
| 714 | } |
| 715 | |
| 716 | $this->reqHeaders['X-Forwarded-For'] = $originalRequest['ip']; |
| 717 | $this->reqHeaders['X-Original-User-Agent'] = $originalRequest['userAgent']; |
| 718 | } |
| 719 | |
| 720 | /** |
| 721 | * Check that the given URI is a valid one. |
| 722 | * |
| 723 | * This hardcodes a small set of protocols only, because we want to |
| 724 | * deterministically reject protocols not supported by all HTTP-transport |
| 725 | * methods. |
| 726 | * |
| 727 | * "file://" specifically must not be allowed, for security reasons |
| 728 | * (see <https://www.mediawiki.org/wiki/Special:Code/MediaWiki/r67684>). |
| 729 | * |
| 730 | * @todo FIXME this is wildly inaccurate and fails to actually check most stuff |
| 731 | * |
| 732 | * @since 1.34 |
| 733 | * @param string $uri URI to check for validity |
| 734 | * @return bool |
| 735 | */ |
| 736 | public static function isValidURI( $uri ) { |
| 737 | return (bool)preg_match( |
| 738 | '/^https?:\/\/[^\/\s]\S*$/D', |
| 739 | $uri |
| 740 | ); |
| 741 | } |
| 742 | } |