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| 1 | <?php |
| 2 | /** |
| 3 | * Deal with importing all those nasty globals and things |
| 4 | * |
| 5 | * Copyright © 2003 Brooke Vibber <bvibber@wikimedia.org> |
| 6 | * https://www.mediawiki.org/ |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License along |
| 19 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 20 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 21 | * http://www.gnu.org/copyleft/gpl.html |
| 22 | * |
| 23 | * @file |
| 24 | */ |
| 25 | |
| 26 | namespace MediaWiki\Request; |
| 27 | |
| 28 | use FatalError; |
| 29 | use MediaWiki\HookContainer\HookRunner; |
| 30 | use MediaWiki\Http\Telemetry; |
| 31 | use MediaWiki\MainConfigNames; |
| 32 | use MediaWiki\MediaWikiServices; |
| 33 | use MediaWiki\Session\Session; |
| 34 | use MediaWiki\Session\SessionId; |
| 35 | use MediaWiki\Session\SessionManager; |
| 36 | use MediaWiki\User\UserIdentity; |
| 37 | use MWException; |
| 38 | use Wikimedia\IPUtils; |
| 39 | |
| 40 | // The point of this class is to be a wrapper around super globals |
| 41 | // phpcs:disable MediaWiki.Usage.SuperGlobalsUsage.SuperGlobals |
| 42 | |
| 43 | /** |
| 44 | * The WebRequest class encapsulates getting at data passed in the |
| 45 | * URL or via a POSTed form, stripping illegal input characters, and |
| 46 | * normalizing Unicode sequences. This class should be used instead |
| 47 | * of accessing globals such as $_GET, $_POST, and $_COOKIE. |
| 48 | * |
| 49 | * @ingroup HTTP |
| 50 | */ |
| 51 | class WebRequest { |
| 52 | /** |
| 53 | * The parameters from $_GET, $_POST and the path router |
| 54 | * @var array |
| 55 | */ |
| 56 | protected $data; |
| 57 | |
| 58 | /** |
| 59 | * The parameters from $_GET. The parameters from the path router are |
| 60 | * added by interpolateTitle() during Setup.php. |
| 61 | * @var (string|string[])[] |
| 62 | */ |
| 63 | protected $queryAndPathParams; |
| 64 | |
| 65 | /** |
| 66 | * The parameters from $_GET only. |
| 67 | * @var (string|string[])[] |
| 68 | */ |
| 69 | protected $queryParams; |
| 70 | |
| 71 | /** |
| 72 | * Lazy-initialized request headers indexed by upper-case header name |
| 73 | * @var string[] |
| 74 | */ |
| 75 | protected $headers = []; |
| 76 | |
| 77 | /** |
| 78 | * Flag to make WebRequest::getHeader return an array of values. |
| 79 | * @since 1.26 |
| 80 | */ |
| 81 | public const GETHEADER_LIST = 1; |
| 82 | |
| 83 | /** |
| 84 | * Lazy-init response object |
| 85 | * @var WebResponse|null |
| 86 | */ |
| 87 | protected ?WebResponse $response = null; |
| 88 | |
| 89 | /** |
| 90 | * Cached client IP address |
| 91 | * @var string |
| 92 | */ |
| 93 | private $ip; |
| 94 | |
| 95 | /** |
| 96 | * The timestamp of the start of the request, with microsecond precision. |
| 97 | * @var float |
| 98 | */ |
| 99 | protected $requestTime; |
| 100 | |
| 101 | /** |
| 102 | * Cached URL protocol |
| 103 | * @var string |
| 104 | */ |
| 105 | protected $protocol; |
| 106 | |
| 107 | /** |
| 108 | * @var SessionId|null Session ID to use for this |
| 109 | * request. We can't save the session directly due to reference cycles not |
| 110 | * working too well (slow GC). |
| 111 | * |
| 112 | * TODO: Investigate whether this GC slowness concern (added in a73c5b7395 with regard to |
| 113 | * PHP 5.6) still applies in PHP 7.2+. |
| 114 | */ |
| 115 | protected $sessionId = null; |
| 116 | |
| 117 | /** @var bool Whether this HTTP request is "safe" (even if it is an HTTP post) */ |
| 118 | protected $markedAsSafe = false; |
| 119 | |
| 120 | /** |
| 121 | * @codeCoverageIgnore |
| 122 | */ |
| 123 | public function __construct() { |
| 124 | $this->requestTime = $_SERVER['REQUEST_TIME_FLOAT']; |
| 125 | |
| 126 | // POST overrides GET data |
| 127 | // We don't use $_REQUEST here to avoid interference from cookies... |
| 128 | $this->data = $_POST + $_GET; |
| 129 | |
| 130 | $this->queryAndPathParams = $this->queryParams = $_GET; |
| 131 | } |
| 132 | |
| 133 | /** |
| 134 | * Returns an entry from the $_SERVER array. |
| 135 | * This exists mainly to allow us to inject fake values for testing. |
| 136 | * |
| 137 | * @param string $name A well known key for $_SERVER, |
| 138 | * see <https://www.php.net/manual/en/reserved.variables.server.php>. |
| 139 | * Only fields that contain string values are supported, |
| 140 | * so 'argv' and 'argc' are not safe to use. |
| 141 | * @param ?string $default The value to return if no value is known for the |
| 142 | * key $name. |
| 143 | * |
| 144 | * @return ?string |
| 145 | */ |
| 146 | protected function getServerInfo( string $name, ?string $default = null ): ?string { |
| 147 | return isset( $_SERVER[$name] ) ? (string)$_SERVER[$name] : $default; |
| 148 | } |
| 149 | |
| 150 | /** |
| 151 | * Extract relevant query arguments from the http request uri's path |
| 152 | * to be merged with the normal php provided query arguments. |
| 153 | * Tries to use the REQUEST_URI data if available and parses it |
| 154 | * according to the wiki's configuration looking for any known pattern. |
| 155 | * |
| 156 | * If the REQUEST_URI is not provided we'll fall back on the PATH_INFO |
| 157 | * provided by the server if any and use that to set a 'title' parameter. |
| 158 | * |
| 159 | * This internal method handles many odd cases and is tailored specifically for |
| 160 | * used by WebRequest::interpolateTitle, for index.php requests. |
| 161 | * Consider using WebRequest::getRequestPathSuffix for other path-related use cases. |
| 162 | * |
| 163 | * @param string $want If this is not 'all', then the function |
| 164 | * will return an empty array if it determines that the URL is |
| 165 | * inside a rewrite path. |
| 166 | * |
| 167 | * @return string[] Any query arguments found in path matches. |
| 168 | * @throws FatalError If invalid routes are configured (T48998) |
| 169 | */ |
| 170 | protected function getPathInfo( $want = 'all' ) { |
| 171 | // PATH_INFO is mangled due to https://bugs.php.net/bug.php?id=31892 |
| 172 | // And also by Apache 2.x, double slashes are converted to single slashes. |
| 173 | // So we will use REQUEST_URI if possible. |
| 174 | $url = $this->getServerInfo( 'REQUEST_URI' ); |
| 175 | if ( $url !== null ) { |
| 176 | // Slurp out the path portion to examine... |
| 177 | if ( !preg_match( '!^https?://!', $url ) ) { |
| 178 | $url = 'http://unused' . $url; |
| 179 | } |
| 180 | $a = parse_url( $url ); |
| 181 | if ( !$a ) { |
| 182 | return []; |
| 183 | } |
| 184 | $path = $a['path'] ?? ''; |
| 185 | |
| 186 | global $wgScript; |
| 187 | if ( $path == $wgScript && $want !== 'all' ) { |
| 188 | // Script inside a rewrite path? |
| 189 | // Abort to keep from breaking... |
| 190 | return []; |
| 191 | } |
| 192 | |
| 193 | $router = new PathRouter; |
| 194 | |
| 195 | // Raw PATH_INFO style |
| 196 | $router->add( "$wgScript/$1" ); |
| 197 | |
| 198 | global $wgArticlePath; |
| 199 | if ( $wgArticlePath ) { |
| 200 | $router->validateRoute( $wgArticlePath, 'wgArticlePath' ); |
| 201 | $router->add( $wgArticlePath ); |
| 202 | } |
| 203 | |
| 204 | global $wgActionPaths; |
| 205 | $articlePaths = PathRouter::getActionPaths( $wgActionPaths, $wgArticlePath ); |
| 206 | if ( $articlePaths ) { |
| 207 | $router->add( $articlePaths, [ 'action' => '$key' ] ); |
| 208 | } |
| 209 | |
| 210 | $services = MediaWikiServices::getInstance(); |
| 211 | global $wgVariantArticlePath; |
| 212 | if ( $wgVariantArticlePath ) { |
| 213 | $router->validateRoute( $wgVariantArticlePath, 'wgVariantArticlePath' ); |
| 214 | $router->add( $wgVariantArticlePath, |
| 215 | [ 'variant' => '$2' ], |
| 216 | [ '$2' => $services->getLanguageConverterFactory() |
| 217 | ->getLanguageConverter( $services->getContentLanguage() ) |
| 218 | ->getVariants() ] |
| 219 | ); |
| 220 | } |
| 221 | |
| 222 | ( new HookRunner( $services->getHookContainer() ) )->onWebRequestPathInfoRouter( $router ); |
| 223 | |
| 224 | $matches = $router->parse( $path ); |
| 225 | } else { |
| 226 | global $wgUsePathInfo; |
| 227 | $matches = []; |
| 228 | if ( $wgUsePathInfo ) { |
| 229 | $origPathInfo = $this->getServerInfo( 'ORIG_PATH_INFO' ) ?? ''; |
| 230 | $pathInfo = $this->getServerInfo( 'PATH_INFO' ) ?? ''; |
| 231 | if ( $origPathInfo !== '' ) { |
| 232 | // Mangled PATH_INFO |
| 233 | // https://bugs.php.net/bug.php?id=31892 |
| 234 | // Also reported when ini_get('cgi.fix_pathinfo')==false |
| 235 | $matches['title'] = substr( $origPathInfo, 1 ); |
| 236 | } elseif ( $pathInfo !== '' ) { |
| 237 | // Regular old PATH_INFO yay |
| 238 | $matches['title'] = substr( $pathInfo, 1 ); |
| 239 | } |
| 240 | } |
| 241 | } |
| 242 | |
| 243 | return $matches; |
| 244 | } |
| 245 | |
| 246 | /** |
| 247 | * If the request URL matches a given base path, extract the path part of |
| 248 | * the request URL after that base, and decode escape sequences in it. |
| 249 | * |
| 250 | * If the request URL does not match, false is returned. |
| 251 | * |
| 252 | * @since 1.35 |
| 253 | * @param string $basePath The base URL path. Trailing slashes will be |
| 254 | * stripped. |
| 255 | * @param ?string $requestUrl The request URL to examine. If not given, the |
| 256 | * URL returned by getGlobalRequestURL() will be used. |
| 257 | * @return string|false |
| 258 | */ |
| 259 | public static function getRequestPathSuffix( string $basePath, ?string $requestUrl = null ) { |
| 260 | $basePath = rtrim( $basePath, '/' ) . '/'; |
| 261 | $requestUrl ??= self::getGlobalRequestURL(); |
| 262 | $qpos = strpos( $requestUrl, '?' ); |
| 263 | if ( $qpos !== false ) { |
| 264 | $requestPath = substr( $requestUrl, 0, $qpos ); |
| 265 | } else { |
| 266 | $requestPath = $requestUrl; |
| 267 | } |
| 268 | if ( !str_starts_with( $requestPath, $basePath ) ) { |
| 269 | return false; |
| 270 | } |
| 271 | return rawurldecode( substr( $requestPath, strlen( $basePath ) ) ); |
| 272 | } |
| 273 | |
| 274 | /** |
| 275 | * Work out an appropriate URL prefix containing scheme and host, based on |
| 276 | * information detected from $_SERVER |
| 277 | * |
| 278 | * @param bool|null $assumeProxiesUseDefaultProtocolPorts When the wiki is running behind a proxy |
| 279 | * and this is set to true, assumes that the proxy exposes the wiki on the standard ports |
| 280 | * (443 for https and 80 for http). Added in 1.38. Calls without this argument are |
| 281 | * supported for backwards compatibility but deprecated. |
| 282 | * |
| 283 | * @return string |
| 284 | */ |
| 285 | public static function detectServer( $assumeProxiesUseDefaultProtocolPorts = null ) { |
| 286 | $assumeProxiesUseDefaultProtocolPorts ??= $GLOBALS['wgAssumeProxiesUseDefaultProtocolPorts']; |
| 287 | |
| 288 | $proto = self::detectProtocol(); |
| 289 | $stdPort = $proto === 'https' ? 443 : 80; |
| 290 | |
| 291 | $varNames = [ 'HTTP_HOST', 'SERVER_NAME', 'HOSTNAME', 'SERVER_ADDR' ]; |
| 292 | $host = 'localhost'; |
| 293 | $port = $stdPort; |
| 294 | foreach ( $varNames as $varName ) { |
| 295 | if ( !isset( $_SERVER[$varName] ) ) { |
| 296 | continue; |
| 297 | } |
| 298 | |
| 299 | $parts = IPUtils::splitHostAndPort( $_SERVER[$varName] ); |
| 300 | if ( !$parts ) { |
| 301 | // Invalid, do not use |
| 302 | continue; |
| 303 | } |
| 304 | |
| 305 | $host = $parts[0]; |
| 306 | if ( $assumeProxiesUseDefaultProtocolPorts && isset( $_SERVER['HTTP_X_FORWARDED_PROTO'] ) ) { |
| 307 | // T72021: Assume that upstream proxy is running on the default |
| 308 | // port based on the protocol. We have no reliable way to determine |
| 309 | // the actual port in use upstream. |
| 310 | $port = $stdPort; |
| 311 | } elseif ( $parts[1] === false ) { |
| 312 | if ( isset( $_SERVER['SERVER_PORT'] ) ) { |
| 313 | $port = intval( $_SERVER['SERVER_PORT'] ); |
| 314 | } // else leave it as $stdPort |
| 315 | } else { |
| 316 | $port = $parts[1]; |
| 317 | } |
| 318 | break; |
| 319 | } |
| 320 | |
| 321 | return $proto . '://' . IPUtils::combineHostAndPort( $host, $port, $stdPort ); |
| 322 | } |
| 323 | |
| 324 | /** |
| 325 | * Detect the protocol from $_SERVER. |
| 326 | * This is for use prior to Setup.php, when no WebRequest object is available. |
| 327 | * At other times, use the non-static function getProtocol(). |
| 328 | * |
| 329 | * @return string |
| 330 | */ |
| 331 | public static function detectProtocol() { |
| 332 | if ( ( !empty( $_SERVER['HTTPS'] ) && $_SERVER['HTTPS'] !== 'off' ) || |
| 333 | ( isset( $_SERVER['HTTP_X_FORWARDED_PROTO'] ) && |
| 334 | $_SERVER['HTTP_X_FORWARDED_PROTO'] === 'https' ) ) { |
| 335 | return 'https'; |
| 336 | } else { |
| 337 | return 'http'; |
| 338 | } |
| 339 | } |
| 340 | |
| 341 | /** |
| 342 | * Get the number of seconds to have elapsed since request start, |
| 343 | * in fractional seconds, with microsecond resolution. |
| 344 | * |
| 345 | * @return float |
| 346 | * @since 1.25 |
| 347 | */ |
| 348 | public function getElapsedTime() { |
| 349 | return microtime( true ) - $this->requestTime; |
| 350 | } |
| 351 | |
| 352 | /** |
| 353 | * Get the current request ID. |
| 354 | * |
| 355 | * This is usually based on the `X-Request-Id` header, or the `UNIQUE_ID` |
| 356 | * environment variable, falling back to (process cached) randomly-generated string. |
| 357 | * |
| 358 | * @return string |
| 359 | * @since 1.27 |
| 360 | */ |
| 361 | public static function getRequestId() { |
| 362 | return Telemetry::getInstance()->getRequestId(); |
| 363 | } |
| 364 | |
| 365 | /** |
| 366 | * Override the unique request ID. This is for sub-requests, such as jobs, |
| 367 | * that wish to use the same id but are not part of the same execution context. |
| 368 | * |
| 369 | * @param string|null $newId |
| 370 | * @since 1.27 |
| 371 | */ |
| 372 | public static function overrideRequestId( $newId ) { |
| 373 | $telemetry = Telemetry::getInstance(); |
| 374 | if ( $newId === null ) { |
| 375 | $telemetry->regenerateRequestId(); |
| 376 | } else { |
| 377 | $telemetry->overrideRequestId( $newId ); |
| 378 | } |
| 379 | } |
| 380 | |
| 381 | /** |
| 382 | * Get the current URL protocol (http or https) |
| 383 | * @return string |
| 384 | */ |
| 385 | public function getProtocol() { |
| 386 | $this->protocol ??= self::detectProtocol(); |
| 387 | return $this->protocol; |
| 388 | } |
| 389 | |
| 390 | /** |
| 391 | * Check for title, action, and/or variant data in the URL |
| 392 | * and interpolate it into the GET variables. |
| 393 | * This should only be run after the content language is available, |
| 394 | * as we may need the list of language variants to determine |
| 395 | * available variant URLs. |
| 396 | */ |
| 397 | public function interpolateTitle() { |
| 398 | $matches = $this->getPathInfo( 'title' ); |
| 399 | foreach ( $matches as $key => $val ) { |
| 400 | $this->data[$key] = $this->queryAndPathParams[$key] = $val; |
| 401 | } |
| 402 | } |
| 403 | |
| 404 | /** |
| 405 | * URL rewriting function; tries to extract page title and, |
| 406 | * optionally, one other fixed parameter value from a URL path. |
| 407 | * |
| 408 | * @param string $path The URL path given from the client |
| 409 | * @param array $bases One or more URLs, optionally with $1 at the end |
| 410 | * @param string|false $key If provided, the matching key in $bases will be |
| 411 | * passed on as the value of this URL parameter |
| 412 | * @return array Array of URL variables to interpolate; empty if no match |
| 413 | */ |
| 414 | public static function extractTitle( $path, $bases, $key = false ) { |
| 415 | foreach ( (array)$bases as $keyValue => $base ) { |
| 416 | // Find the part after $wgArticlePath |
| 417 | $base = str_replace( '$1', '', $base ); |
| 418 | if ( str_starts_with( $path, $base ) ) { |
| 419 | $raw = substr( $path, strlen( $base ) ); |
| 420 | if ( $raw !== '' ) { |
| 421 | $matches = [ 'title' => rawurldecode( $raw ) ]; |
| 422 | if ( $key ) { |
| 423 | $matches[$key] = $keyValue; |
| 424 | } |
| 425 | return $matches; |
| 426 | } |
| 427 | } |
| 428 | } |
| 429 | return []; |
| 430 | } |
| 431 | |
| 432 | /** |
| 433 | * Recursively normalizes UTF-8 strings in the given array. |
| 434 | * |
| 435 | * @param string|array $data |
| 436 | * @return array|string Cleaned-up version of the given |
| 437 | * @internal |
| 438 | */ |
| 439 | public function normalizeUnicode( $data ) { |
| 440 | if ( is_array( $data ) ) { |
| 441 | foreach ( $data as $key => $val ) { |
| 442 | $data[$key] = $this->normalizeUnicode( $val ); |
| 443 | } |
| 444 | } else { |
| 445 | $contLang = MediaWikiServices::getInstance()->getContentLanguage(); |
| 446 | $data = $contLang->normalize( $data ); |
| 447 | } |
| 448 | return $data; |
| 449 | } |
| 450 | |
| 451 | /** |
| 452 | * Fetch a value from the given array or return $default if it's not set. |
| 453 | * |
| 454 | * @param array $arr |
| 455 | * @param string $name |
| 456 | * @param mixed $default |
| 457 | * @return mixed |
| 458 | * @return-taint tainted |
| 459 | */ |
| 460 | private function getGPCVal( $arr, $name, $default ) { |
| 461 | # PHP is so nice to not touch input data, except sometimes: |
| 462 | # https://www.php.net/variables.external#language.variables.external.dot-in-names |
| 463 | # Work around PHP *feature* to avoid *bugs* elsewhere. |
| 464 | $name = strtr( $name, '.', '_' ); |
| 465 | |
| 466 | if ( !isset( $arr[$name] ) ) { |
| 467 | return $default; |
| 468 | } |
| 469 | |
| 470 | $data = $arr[$name]; |
| 471 | # Optimisation: Skip UTF-8 normalization and legacy transcoding for simple ASCII strings. |
| 472 | $isAsciiStr = ( is_string( $data ) && preg_match( '/[^\x20-\x7E]/', $data ) === 0 ); |
| 473 | if ( !$isAsciiStr ) { |
| 474 | if ( isset( $_GET[$name] ) && is_string( $data ) ) { |
| 475 | # Check for alternate/legacy character encoding. |
| 476 | $data = MediaWikiServices::getInstance() |
| 477 | ->getContentLanguage() |
| 478 | ->checkTitleEncoding( $data ); |
| 479 | } |
| 480 | $data = $this->normalizeUnicode( $data ); |
| 481 | } |
| 482 | |
| 483 | return $data; |
| 484 | } |
| 485 | |
| 486 | /** |
| 487 | * Fetch a string from this web request's $_GET, $_POST or path router vars WITHOUT any |
| 488 | * Unicode or line break normalization. This is a fast alternative for values that are known |
| 489 | * to be simple, e.g. pure ASCII. When reading user input, use {@see getText} instead. |
| 490 | * |
| 491 | * Array values are discarded for security reasons. Use {@see getArray} or {@see getIntArray}. |
| 492 | * |
| 493 | * @since 1.28 |
| 494 | * @param string $name |
| 495 | * @param string|null $default Deprecated since 1.43. Use ?? $default instead. |
| 496 | * @return string|null The value, or $default if none set |
| 497 | * @return-taint tainted |
| 498 | */ |
| 499 | public function getRawVal( $name, $default = null ): ?string { |
| 500 | $name = strtr( $name, '.', '_' ); // See comment in self::getGPCVal() |
| 501 | if ( isset( $this->data[$name] ) && !is_array( $this->data[$name] ) ) { |
| 502 | $val = $this->data[$name]; |
| 503 | } else { |
| 504 | $val = $default; |
| 505 | } |
| 506 | |
| 507 | return $val === null ? null : (string)$val; |
| 508 | } |
| 509 | |
| 510 | /** |
| 511 | * Fetch a text string from this web request's $_GET, $_POST or path router vars and partially |
| 512 | * normalize it. |
| 513 | * |
| 514 | * Use of this method is discouraged. It doesn't normalize line breaks and defaults to null |
| 515 | * instead of the empty string. Instead: |
| 516 | * - Use {@see getText} when reading user input or form fields that are expected to contain |
| 517 | * non-ASCII characters. |
| 518 | * - Use {@see getRawVal} when reading ASCII strings, such as parameters used to select |
| 519 | * predefined behaviour in the software. |
| 520 | * |
| 521 | * Array values are discarded for security reasons. Use {@see getArray} or {@see getIntArray}. |
| 522 | * |
| 523 | * @param string $name |
| 524 | * @param string|null $default |
| 525 | * @return string|null The input value, or $default if none set |
| 526 | * @return-taint tainted |
| 527 | */ |
| 528 | public function getVal( $name, $default = null ) { |
| 529 | $val = $this->getGPCVal( $this->data, $name, $default ); |
| 530 | if ( is_array( $val ) ) { |
| 531 | $val = $default; |
| 532 | } |
| 533 | |
| 534 | return $val === null ? null : (string)$val; |
| 535 | } |
| 536 | |
| 537 | /** |
| 538 | * Fetch a text string from this web request's $_GET, $_POST or path router vars and return it |
| 539 | * in normalized form. |
| 540 | * |
| 541 | * This normalizes Unicode sequences (via {@see getGPCVal}) and line breaks. |
| 542 | * |
| 543 | * This should be used for all user input and form fields that are expected to contain non-ASCII |
| 544 | * characters, especially if the value will be stored or compared against stored values. Without |
| 545 | * normalization, logically identically values might not match when they are typed on different |
| 546 | * OS' or keyboards. |
| 547 | * |
| 548 | * Array values are discarded for security reasons. Use {@see getArray} or {@see getIntArray}. |
| 549 | * |
| 550 | * @param string $name |
| 551 | * @param string $default |
| 552 | * @return string The normalized input value, or $default if none set |
| 553 | * @return-taint tainted |
| 554 | */ |
| 555 | public function getText( $name, $default = '' ) { |
| 556 | $val = $this->getVal( $name, $default ); |
| 557 | return str_replace( "\r\n", "\n", $val ); |
| 558 | } |
| 559 | |
| 560 | /** |
| 561 | * Set an arbitrary value into our get/post data. |
| 562 | * |
| 563 | * @param string $key Key name to use |
| 564 | * @param mixed $value Value to set |
| 565 | * @return mixed Old value if one was present, null otherwise |
| 566 | */ |
| 567 | public function setVal( $key, $value ) { |
| 568 | $ret = $this->data[$key] ?? null; |
| 569 | $this->data[$key] = $value; |
| 570 | return $ret; |
| 571 | } |
| 572 | |
| 573 | /** |
| 574 | * Unset an arbitrary value from our get/post data. |
| 575 | * |
| 576 | * @param string $key Key name to use |
| 577 | * @return mixed Old value if one was present, null otherwise |
| 578 | */ |
| 579 | public function unsetVal( $key ) { |
| 580 | if ( !isset( $this->data[$key] ) ) { |
| 581 | $ret = null; |
| 582 | } else { |
| 583 | $ret = $this->data[$key]; |
| 584 | unset( $this->data[$key] ); |
| 585 | } |
| 586 | return $ret; |
| 587 | } |
| 588 | |
| 589 | /** |
| 590 | * Fetch an array from this web request's $_GET, $_POST or path router vars, |
| 591 | * or return $default if it's not set. If source was scalar, will return an |
| 592 | * array with a single element. If no source and no default, returns null. |
| 593 | * |
| 594 | * @param string $name |
| 595 | * @param array|null $default Optional default (or null) |
| 596 | * @return array|null |
| 597 | * @return-taint tainted |
| 598 | */ |
| 599 | public function getArray( $name, $default = null ) { |
| 600 | $val = $this->getGPCVal( $this->data, $name, $default ); |
| 601 | if ( $val === null ) { |
| 602 | return null; |
| 603 | } else { |
| 604 | return (array)$val; |
| 605 | } |
| 606 | } |
| 607 | |
| 608 | /** |
| 609 | * Fetch an array of integers from this web request's $_GET, $_POST or |
| 610 | * path router vars, or return $default if it's not set. If source was |
| 611 | * scalar, will return an array with a single element. If no source and |
| 612 | * no default, returns null. If an array is returned, contents are |
| 613 | * guaranteed to be integers. |
| 614 | * |
| 615 | * @param string $name |
| 616 | * @param array|null $default Option default (or null) |
| 617 | * @return int[]|null |
| 618 | * @return-taint none |
| 619 | */ |
| 620 | public function getIntArray( $name, $default = null ) { |
| 621 | $val = $this->getArray( $name, $default ); |
| 622 | if ( is_array( $val ) ) { |
| 623 | $val = array_map( 'intval', $val ); |
| 624 | } |
| 625 | return $val; |
| 626 | } |
| 627 | |
| 628 | /** |
| 629 | * Fetch an integer value from this web request's $_GET, $_POST or |
| 630 | * path router vars, or return $default if not set. Guaranteed to return |
| 631 | * an integer; non-numeric input will typically return 0. |
| 632 | * |
| 633 | * @param string $name |
| 634 | * @param int $default |
| 635 | * @return int |
| 636 | */ |
| 637 | public function getInt( $name, $default = 0 ): int { |
| 638 | return intval( $this->getRawVal( $name ) ?? $default ); |
| 639 | } |
| 640 | |
| 641 | /** |
| 642 | * Fetch an integer value from this web request's $_GET, $_POST or |
| 643 | * path router vars, or return null if empty. Guaranteed to return an |
| 644 | * integer or null; non-numeric input will typically return null. |
| 645 | * |
| 646 | * @param string $name |
| 647 | * @return int|null |
| 648 | */ |
| 649 | public function getIntOrNull( $name ): ?int { |
| 650 | $val = $this->getRawVal( $name ); |
| 651 | return is_numeric( $val ) ? intval( $val ) : null; |
| 652 | } |
| 653 | |
| 654 | /** |
| 655 | * Fetch a floating point value from this web request's $_GET, $_POST |
| 656 | * or path router vars, or return $default if not set. Guaranteed to |
| 657 | * return a float; non-numeric input will typically return 0. |
| 658 | * |
| 659 | * @since 1.23 |
| 660 | * @param string $name |
| 661 | * @param float $default |
| 662 | * @return float |
| 663 | */ |
| 664 | public function getFloat( $name, $default = 0.0 ): float { |
| 665 | return floatval( $this->getRawVal( $name ) ?? $default ); |
| 666 | } |
| 667 | |
| 668 | /** |
| 669 | * Fetch a boolean value from this web request's $_GET, $_POST or path |
| 670 | * router vars or return $default if not set. Guaranteed to return true |
| 671 | * or false, with normal PHP semantics for boolean interpretation of strings. |
| 672 | * |
| 673 | * @param string $name |
| 674 | * @param bool $default |
| 675 | * @return bool |
| 676 | */ |
| 677 | public function getBool( $name, $default = false ): bool { |
| 678 | return (bool)( $this->getRawVal( $name ) ?? $default ); |
| 679 | } |
| 680 | |
| 681 | /** |
| 682 | * Fetch a boolean value from this web request's $_GET, $_POST or path router |
| 683 | * vars or return $default if not set. Unlike getBool, the string "false" will |
| 684 | * result in boolean false, which is useful when interpreting information sent |
| 685 | * from JavaScript. |
| 686 | * |
| 687 | * @param string $name |
| 688 | * @param bool $default |
| 689 | * @return bool |
| 690 | */ |
| 691 | public function getFuzzyBool( $name, $default = false ): bool { |
| 692 | $value = $this->getRawVal( $name ); |
| 693 | if ( $value === null ) { |
| 694 | return (bool)$default; |
| 695 | } |
| 696 | |
| 697 | return $value && strcasecmp( $value, 'false' ) !== 0; |
| 698 | } |
| 699 | |
| 700 | /** |
| 701 | * Return true if the named value is set in this web request's $_GET, |
| 702 | * $_POST or path router vars, whatever that value is (even "0"). |
| 703 | * Return false if the named value is not set. Example use is checking |
| 704 | * for the presence of check boxes in forms. |
| 705 | * |
| 706 | * @param string $name |
| 707 | * @return bool |
| 708 | */ |
| 709 | public function getCheck( $name ): bool { |
| 710 | # Checkboxes and buttons are only present when clicked |
| 711 | # Presence connotes truth, absence false |
| 712 | return $this->getRawVal( $name ) !== null; |
| 713 | } |
| 714 | |
| 715 | /** |
| 716 | * Extracts the (given) named values from this web request's $_GET, $_POST or path |
| 717 | * router vars into an array. No transformation is performed on the values. |
| 718 | * |
| 719 | * @param string ...$names If no arguments are given, returns all input values |
| 720 | * @return array |
| 721 | * @return-taint tainted |
| 722 | */ |
| 723 | public function getValues( ...$names ) { |
| 724 | if ( $names === [] ) { |
| 725 | $names = array_keys( $this->data ); |
| 726 | } |
| 727 | |
| 728 | $retVal = []; |
| 729 | foreach ( $names as $name ) { |
| 730 | $value = $this->getGPCVal( $this->data, $name, null ); |
| 731 | if ( $value !== null ) { |
| 732 | $retVal[$name] = $value; |
| 733 | } |
| 734 | } |
| 735 | return $retVal; |
| 736 | } |
| 737 | |
| 738 | /** |
| 739 | * Returns the names of this web request's $_GET, $_POST or path router vars, |
| 740 | * excluding those in $exclude. |
| 741 | * |
| 742 | * @param array $exclude |
| 743 | * @return array |
| 744 | * @return-taint tainted |
| 745 | */ |
| 746 | public function getValueNames( $exclude = [] ) { |
| 747 | return array_diff( array_keys( $this->getValues() ), $exclude ); |
| 748 | } |
| 749 | |
| 750 | /** |
| 751 | * Get the values passed in $_GET and the path router parameters. |
| 752 | * No transformation is performed on the values. |
| 753 | * |
| 754 | * @codeCoverageIgnore |
| 755 | * @return (string|string[])[] Might contain arrays in case there was a `¶m[]=…` parameter |
| 756 | * @return-taint tainted |
| 757 | */ |
| 758 | public function getQueryValues() { |
| 759 | return $this->queryAndPathParams; |
| 760 | } |
| 761 | |
| 762 | /** |
| 763 | * Get the values passed in $_GET only, not including the path |
| 764 | * router parameters. This is less suitable for self-links to index.php but |
| 765 | * useful for other entry points. No transformation is performed on the |
| 766 | * values. |
| 767 | * |
| 768 | * @since 1.34 |
| 769 | * @return (string|string[])[] Might contain arrays in case there was a `¶m[]=…` parameter |
| 770 | */ |
| 771 | public function getQueryValuesOnly() { |
| 772 | return $this->queryParams; |
| 773 | } |
| 774 | |
| 775 | /** |
| 776 | * Get the values passed via POST. |
| 777 | * No transformation is performed on the values. |
| 778 | * |
| 779 | * @since 1.32 |
| 780 | * @codeCoverageIgnore |
| 781 | * @return (string|string[])[] Might contain arrays in case there was a `¶m[]=…` parameter |
| 782 | */ |
| 783 | public function getPostValues() { |
| 784 | return $_POST; |
| 785 | } |
| 786 | |
| 787 | /** |
| 788 | * Return the contents of the URL query string with no decoding. Use when you need to |
| 789 | * know exactly what was sent, e.g. for an OAuth signature over the elements. |
| 790 | * |
| 791 | * @codeCoverageIgnore |
| 792 | * @return string |
| 793 | * @return-taint tainted |
| 794 | */ |
| 795 | public function getRawQueryString() { |
| 796 | return $this->getServerInfo( 'QUERY_STRING' ) ?? ''; |
| 797 | } |
| 798 | |
| 799 | /** |
| 800 | * Return the contents of the POST with no decoding. Use when you need to |
| 801 | * know exactly what was sent, e.g. for an OAuth signature over the elements. |
| 802 | * |
| 803 | * @return string |
| 804 | * @return-taint tainted |
| 805 | */ |
| 806 | public function getRawPostString() { |
| 807 | if ( !$this->wasPosted() ) { |
| 808 | return ''; |
| 809 | } |
| 810 | return $this->getRawInput(); |
| 811 | } |
| 812 | |
| 813 | /** |
| 814 | * Return the raw request body, with no processing. Cached since some methods |
| 815 | * disallow reading the stream more than once. As stated in the php docs, this |
| 816 | * does not work with enctype="multipart/form-data". |
| 817 | * |
| 818 | * @return string |
| 819 | * @return-taint tainted |
| 820 | */ |
| 821 | public function getRawInput() { |
| 822 | static $input = null; |
| 823 | $input ??= file_get_contents( 'php://input' ); |
| 824 | return $input; |
| 825 | } |
| 826 | |
| 827 | /** |
| 828 | * Get the HTTP method used for this request. |
| 829 | * |
| 830 | * @return string |
| 831 | */ |
| 832 | public function getMethod() { |
| 833 | return $this->getServerInfo( 'REQUEST_METHOD' ) ?: 'GET'; |
| 834 | } |
| 835 | |
| 836 | /** |
| 837 | * Returns true if the present request was reached by a POST operation, |
| 838 | * false otherwise (GET, HEAD, or command-line). |
| 839 | * |
| 840 | * Note that values retrieved by the object may come from the |
| 841 | * GET URL etc even on a POST request. |
| 842 | * |
| 843 | * @return bool |
| 844 | */ |
| 845 | public function wasPosted() { |
| 846 | return $this->getMethod() == 'POST'; |
| 847 | } |
| 848 | |
| 849 | /** |
| 850 | * Return the session for this request |
| 851 | * |
| 852 | * This might unpersist an existing session if it was invalid. |
| 853 | * |
| 854 | * @since 1.27 |
| 855 | * @note For performance, keep the session locally if you will be making |
| 856 | * much use of it instead of calling this method repeatedly. |
| 857 | * @return Session |
| 858 | */ |
| 859 | public function getSession(): Session { |
| 860 | if ( $this->sessionId !== null ) { |
| 861 | $session = SessionManager::singleton()->getSessionById( (string)$this->sessionId, true, $this ); |
| 862 | if ( $session ) { |
| 863 | return $session; |
| 864 | } |
| 865 | } |
| 866 | |
| 867 | $session = SessionManager::singleton()->getSessionForRequest( $this ); |
| 868 | $this->sessionId = $session->getSessionId(); |
| 869 | return $session; |
| 870 | } |
| 871 | |
| 872 | /** |
| 873 | * Set the session for this request |
| 874 | * @since 1.27 |
| 875 | * @internal For use by MediaWiki\Session classes only |
| 876 | * @param SessionId $sessionId |
| 877 | */ |
| 878 | public function setSessionId( SessionId $sessionId ) { |
| 879 | $this->sessionId = $sessionId; |
| 880 | } |
| 881 | |
| 882 | /** |
| 883 | * Get the session id for this request, if any |
| 884 | * @since 1.27 |
| 885 | * @internal For use by MediaWiki\Session classes only |
| 886 | * @return SessionId|null |
| 887 | */ |
| 888 | public function getSessionId() { |
| 889 | return $this->sessionId; |
| 890 | } |
| 891 | |
| 892 | /** |
| 893 | * Get a cookie from the $_COOKIE jar |
| 894 | * |
| 895 | * @param string $key The name of the cookie |
| 896 | * @param string|null $prefix A prefix to use for the cookie name, if not $wgCookiePrefix |
| 897 | * @param mixed|null $default What to return if the value isn't found |
| 898 | * @return mixed Cookie value or $default if the cookie not set |
| 899 | * @return-taint tainted |
| 900 | */ |
| 901 | public function getCookie( $key, $prefix = null, $default = null ) { |
| 902 | if ( $prefix === null ) { |
| 903 | global $wgCookiePrefix; |
| 904 | $prefix = $wgCookiePrefix; |
| 905 | } |
| 906 | $name = $prefix . $key; |
| 907 | // Work around mangling of $_COOKIE |
| 908 | $name = strtr( $name, '.', '_' ); |
| 909 | if ( isset( $_COOKIE[$name] ) ) { |
| 910 | // For duplicate cookies in the format of name[]=value;name[]=value2, |
| 911 | // PHP will assign an array value for the 'name' cookie in $_COOKIE. |
| 912 | // Neither RFC 6265 nor its preceding RFCs define such behavior, |
| 913 | // and MediaWiki does not rely on it either, so treat the cookie as absent if so (T363980). |
| 914 | if ( is_array( $_COOKIE[$name] ) ) { |
| 915 | return $default; |
| 916 | } |
| 917 | return $_COOKIE[$name]; |
| 918 | } else { |
| 919 | return $default; |
| 920 | } |
| 921 | } |
| 922 | |
| 923 | /** |
| 924 | * Get a cookie set with SameSite=None. |
| 925 | * |
| 926 | * @deprecated since 1.42 use getCookie(), but note the different $prefix default |
| 927 | * |
| 928 | * @param string $key The name of the cookie |
| 929 | * @param string $prefix A prefix to use, empty by default |
| 930 | * @param mixed|null $default What to return if the value isn't found |
| 931 | * @return mixed Cookie value or $default if the cookie is not set |
| 932 | */ |
| 933 | public function getCrossSiteCookie( $key, $prefix = '', $default = null ) { |
| 934 | wfDeprecated( __METHOD__, '1.42' ); |
| 935 | return $this->getCookie( $key, $prefix, $default ); |
| 936 | } |
| 937 | |
| 938 | /** |
| 939 | * Return the path and query string portion of the main request URI. |
| 940 | * This will be suitable for use as a relative link in HTML output. |
| 941 | * |
| 942 | * @throws MWException |
| 943 | * @return string |
| 944 | * @return-taint tainted |
| 945 | */ |
| 946 | public static function getGlobalRequestURL() { |
| 947 | // This method is called on fatal errors; it should not depend on anything complex. |
| 948 | |
| 949 | if ( isset( $_SERVER['REQUEST_URI'] ) && strlen( $_SERVER['REQUEST_URI'] ) ) { |
| 950 | $base = $_SERVER['REQUEST_URI']; |
| 951 | } elseif ( isset( $_SERVER['HTTP_X_ORIGINAL_URL'] ) |
| 952 | && strlen( $_SERVER['HTTP_X_ORIGINAL_URL'] ) |
| 953 | ) { |
| 954 | // Probably IIS; doesn't set REQUEST_URI |
| 955 | $base = $_SERVER['HTTP_X_ORIGINAL_URL']; |
| 956 | } elseif ( isset( $_SERVER['SCRIPT_NAME'] ) ) { |
| 957 | $base = $_SERVER['SCRIPT_NAME']; |
| 958 | if ( isset( $_SERVER['QUERY_STRING'] ) && $_SERVER['QUERY_STRING'] != '' ) { |
| 959 | $base .= '?' . $_SERVER['QUERY_STRING']; |
| 960 | } |
| 961 | } else { |
| 962 | // This shouldn't happen! |
| 963 | throw new MWException( |
| 964 | "Web server doesn't provide either " . |
| 965 | "REQUEST_URI, HTTP_X_ORIGINAL_URL or SCRIPT_NAME. Report details " . |
| 966 | "of your web server configuration to https://phabricator.wikimedia.org/" |
| 967 | ); |
| 968 | } |
| 969 | // User-agents should not send a fragment with the URI, but |
| 970 | // if they do, and the web server passes it on to us, we |
| 971 | // need to strip it or we get false-positive redirect loops |
| 972 | // or weird output URLs |
| 973 | $hash = strpos( $base, '#' ); |
| 974 | if ( $hash !== false ) { |
| 975 | $base = substr( $base, 0, $hash ); |
| 976 | } |
| 977 | |
| 978 | if ( $base[0] == '/' ) { |
| 979 | // More than one slash will look like it is protocol relative |
| 980 | return preg_replace( '!^/+!', '/', $base ); |
| 981 | } else { |
| 982 | // We may get paths with a host prepended; strip it. |
| 983 | return preg_replace( '!^[^:]+://[^/]+/+!', '/', $base ); |
| 984 | } |
| 985 | } |
| 986 | |
| 987 | /** |
| 988 | * Return the path and query string portion of the request URI. |
| 989 | * This will be suitable for use as a relative link in HTML output. |
| 990 | * |
| 991 | * @throws MWException |
| 992 | * @return string |
| 993 | * @return-taint tainted |
| 994 | */ |
| 995 | public function getRequestURL() { |
| 996 | return self::getGlobalRequestURL(); |
| 997 | } |
| 998 | |
| 999 | /** |
| 1000 | * Return the request URI with the canonical service and hostname, path, |
| 1001 | * and query string. This will be suitable for use as an absolute link |
| 1002 | * in HTML or other output. |
| 1003 | * |
| 1004 | * If $wgServer is protocol-relative, this will return a fully |
| 1005 | * qualified URL with the protocol of this request object. |
| 1006 | * |
| 1007 | * @return string |
| 1008 | * @return-taint tainted |
| 1009 | */ |
| 1010 | public function getFullRequestURL() { |
| 1011 | $urlUtils = MediaWikiServices::getInstance()->getUrlUtils(); |
| 1012 | // Pass an explicit PROTO constant instead of PROTO_CURRENT so that we |
| 1013 | // do not rely on state from the global $wgRequest object (which it would, |
| 1014 | // via UrlUtils::getServer()/UrlUtils::expand()/$wgRequest->protocol). |
| 1015 | if ( $this->getProtocol() === 'http' ) { |
| 1016 | return ( $urlUtils->getServer( PROTO_HTTP ) ?? '' ) . $this->getRequestURL(); |
| 1017 | } else { |
| 1018 | return ( $urlUtils->getServer( PROTO_HTTPS ) ?? '' ) . $this->getRequestURL(); |
| 1019 | } |
| 1020 | } |
| 1021 | |
| 1022 | /** |
| 1023 | * @param string $key |
| 1024 | * @param string $value |
| 1025 | * @return string |
| 1026 | */ |
| 1027 | public function appendQueryValue( $key, $value ) { |
| 1028 | return $this->appendQueryArray( [ $key => $value ] ); |
| 1029 | } |
| 1030 | |
| 1031 | /** |
| 1032 | * Appends or replaces value of query variables. |
| 1033 | * |
| 1034 | * @param array $array Array of values to replace/add to query |
| 1035 | * @return string |
| 1036 | */ |
| 1037 | public function appendQueryArray( $array ) { |
| 1038 | $newquery = $this->getQueryValues(); |
| 1039 | unset( $newquery['title'] ); |
| 1040 | $newquery = array_merge( $newquery, $array ); |
| 1041 | |
| 1042 | return wfArrayToCgi( $newquery ); |
| 1043 | } |
| 1044 | |
| 1045 | /** |
| 1046 | * Check for limit and offset parameters on the input, and return sensible |
| 1047 | * defaults if not given. The limit must be positive and is capped at 5000. |
| 1048 | * Offset must be positive but is not capped. |
| 1049 | * |
| 1050 | * @param UserIdentity $user UserIdentity to get option for |
| 1051 | * @param int $deflimit Limit to use if no input and the user hasn't set the option. |
| 1052 | * @param string $optionname To specify an option other than rclimit to pull from. |
| 1053 | * @return int[] First element is limit, second is offset |
| 1054 | */ |
| 1055 | public function getLimitOffsetForUser( UserIdentity $user, $deflimit = 50, $optionname = 'rclimit' ) { |
| 1056 | $limit = $this->getInt( 'limit', 0 ); |
| 1057 | if ( $limit < 0 ) { |
| 1058 | $limit = 0; |
| 1059 | } |
| 1060 | if ( ( $limit == 0 ) && ( $optionname != '' ) ) { |
| 1061 | $limit = MediaWikiServices::getInstance() |
| 1062 | ->getUserOptionsLookup() |
| 1063 | ->getIntOption( $user, $optionname ); |
| 1064 | } |
| 1065 | if ( $limit <= 0 ) { |
| 1066 | $limit = $deflimit; |
| 1067 | } |
| 1068 | if ( $limit > 5000 ) { |
| 1069 | $limit = 5000; # We have *some* limits... |
| 1070 | } |
| 1071 | |
| 1072 | $offset = $this->getInt( 'offset', 0 ); |
| 1073 | if ( $offset < 0 ) { |
| 1074 | $offset = 0; |
| 1075 | } |
| 1076 | |
| 1077 | return [ $limit, $offset ]; |
| 1078 | } |
| 1079 | |
| 1080 | /** |
| 1081 | * Return the path to the temporary file where PHP has stored the upload. |
| 1082 | * |
| 1083 | * @param string $key |
| 1084 | * @return string|null String or null if no such file. |
| 1085 | */ |
| 1086 | public function getFileTempname( $key ) { |
| 1087 | return $this->getUpload( $key )->getTempName(); |
| 1088 | } |
| 1089 | |
| 1090 | /** |
| 1091 | * Return the upload error or 0 |
| 1092 | * |
| 1093 | * @param string $key |
| 1094 | * @return int |
| 1095 | */ |
| 1096 | public function getUploadError( $key ) { |
| 1097 | return $this->getUpload( $key )->getError(); |
| 1098 | } |
| 1099 | |
| 1100 | /** |
| 1101 | * Return the original filename of the uploaded file, as reported by |
| 1102 | * the submitting user agent. HTML-style character entities are |
| 1103 | * interpreted and normalized to Unicode normalization form C, in part |
| 1104 | * to deal with weird input from Safari with non-ASCII filenames. |
| 1105 | * |
| 1106 | * Other than this the name is not verified for being a safe filename. |
| 1107 | * |
| 1108 | * @param string $key |
| 1109 | * @return string|null String or null if no such file. |
| 1110 | */ |
| 1111 | public function getFileName( $key ) { |
| 1112 | return $this->getUpload( $key )->getName(); |
| 1113 | } |
| 1114 | |
| 1115 | /** |
| 1116 | * Return a MediaWiki\Request\WebRequestUpload object corresponding to the key |
| 1117 | * |
| 1118 | * @param string $key |
| 1119 | * @return WebRequestUpload |
| 1120 | */ |
| 1121 | public function getUpload( $key ) { |
| 1122 | return new WebRequestUpload( $this, $key ); |
| 1123 | } |
| 1124 | |
| 1125 | /** |
| 1126 | * Return a handle to WebResponse style object, for setting cookies, |
| 1127 | * headers and other stuff, for Request being worked on. |
| 1128 | */ |
| 1129 | public function response(): WebResponse { |
| 1130 | /* Lazy initialization of response object for this request */ |
| 1131 | if ( !$this->response ) { |
| 1132 | $this->response = new WebResponse(); |
| 1133 | } |
| 1134 | return $this->response; |
| 1135 | } |
| 1136 | |
| 1137 | /** |
| 1138 | * Initialise the header list |
| 1139 | */ |
| 1140 | protected function initHeaders() { |
| 1141 | if ( count( $this->headers ) ) { |
| 1142 | return; |
| 1143 | } |
| 1144 | |
| 1145 | $this->headers = array_change_key_case( getallheaders(), CASE_UPPER ); |
| 1146 | } |
| 1147 | |
| 1148 | /** |
| 1149 | * Get an array containing all request headers |
| 1150 | * |
| 1151 | * @return string[] Mapping header name to its value |
| 1152 | * @return-taint tainted |
| 1153 | */ |
| 1154 | public function getAllHeaders() { |
| 1155 | $this->initHeaders(); |
| 1156 | return $this->headers; |
| 1157 | } |
| 1158 | |
| 1159 | /** |
| 1160 | * Get a request header, or false if it isn't set. |
| 1161 | * |
| 1162 | * @param string $name Case-insensitive header name |
| 1163 | * @param int $flags Bitwise combination of: |
| 1164 | * WebRequest::GETHEADER_LIST Treat the header as a comma-separated list |
| 1165 | * of values, as described in RFC 2616 § 4.2. |
| 1166 | * (since 1.26). |
| 1167 | * @return string|string[]|false False if header is unset; otherwise the |
| 1168 | * header value(s) as either a string (the default) or an array, if |
| 1169 | * WebRequest::GETHEADER_LIST flag was set. |
| 1170 | * @return-taint tainted |
| 1171 | */ |
| 1172 | public function getHeader( $name, $flags = 0 ) { |
| 1173 | $this->initHeaders(); |
| 1174 | $name = strtoupper( $name ); |
| 1175 | if ( !isset( $this->headers[$name] ) ) { |
| 1176 | return false; |
| 1177 | } |
| 1178 | $value = $this->headers[$name]; |
| 1179 | if ( $flags & self::GETHEADER_LIST ) { |
| 1180 | $value = array_map( 'trim', explode( ',', $value ) ); |
| 1181 | } |
| 1182 | return $value; |
| 1183 | } |
| 1184 | |
| 1185 | /** |
| 1186 | * Get data from the session |
| 1187 | * |
| 1188 | * @note Prefer $this->getSession() instead if making multiple calls. |
| 1189 | * @param string $key Name of key in the session |
| 1190 | * @return mixed |
| 1191 | */ |
| 1192 | public function getSessionData( $key ) { |
| 1193 | return $this->getSession()->get( $key ); |
| 1194 | } |
| 1195 | |
| 1196 | /** |
| 1197 | * @note Prefer $this->getSession() instead if making multiple calls. |
| 1198 | * @param string $key Name of key in the session |
| 1199 | * @param mixed $data |
| 1200 | */ |
| 1201 | public function setSessionData( $key, $data ) { |
| 1202 | $this->getSession()->set( $key, $data ); |
| 1203 | } |
| 1204 | |
| 1205 | /** |
| 1206 | * Parse the Accept-Language header sent by the client into an array |
| 1207 | * |
| 1208 | * @return array [ languageCode => q-value ] sorted by q-value in |
| 1209 | * descending order then appearing time in the header in ascending order. |
| 1210 | * May contain the "language" '*', which applies to languages other than those explicitly listed. |
| 1211 | * |
| 1212 | * This logic is aligned with RFC 7231 section 5 (previously RFC 2616 section 14), |
| 1213 | * at <https://tools.ietf.org/html/rfc7231#section-5.3.5>. |
| 1214 | * |
| 1215 | * Earlier languages in the list are preferred as per the RFC 23282 extension to HTTP/1.1, |
| 1216 | * at <https://tools.ietf.org/html/rfc3282>. |
| 1217 | * @return-taint tainted |
| 1218 | */ |
| 1219 | public function getAcceptLang() { |
| 1220 | // Modified version of code found at |
| 1221 | // http://www.thefutureoftheweb.com/blog/use-accept-language-header |
| 1222 | $acceptLang = $this->getHeader( 'Accept-Language' ); |
| 1223 | if ( !$acceptLang ) { |
| 1224 | return []; |
| 1225 | } |
| 1226 | |
| 1227 | // Return the language codes in lower case |
| 1228 | $acceptLang = strtolower( $acceptLang ); |
| 1229 | |
| 1230 | // Break up string into pieces (languages and q factors) |
| 1231 | if ( !preg_match_all( |
| 1232 | '/ |
| 1233 | # a language code or a star is required |
| 1234 | ([a-z]{1,8}(?:-[a-z]{1,8})*|\*) |
| 1235 | # from here everything is optional |
| 1236 | \s* |
| 1237 | (?: |
| 1238 | # this accepts only numbers in the range ;q=0.000 to ;q=1.000 |
| 1239 | ;\s*q\s*=\s* |
| 1240 | (1(?:\.0{0,3})?|0(?:\.\d{0,3})?)? |
| 1241 | )? |
| 1242 | /x', |
| 1243 | $acceptLang, |
| 1244 | $matches, |
| 1245 | PREG_SET_ORDER |
| 1246 | ) ) { |
| 1247 | return []; |
| 1248 | } |
| 1249 | |
| 1250 | // Create a list like "en" => 0.8 |
| 1251 | $langs = []; |
| 1252 | foreach ( $matches as $match ) { |
| 1253 | $languageCode = $match[1]; |
| 1254 | // When not present, the default value is 1 |
| 1255 | $qValue = (float)( $match[2] ?? 1.0 ); |
| 1256 | if ( $qValue ) { |
| 1257 | $langs[$languageCode] = $qValue; |
| 1258 | } |
| 1259 | } |
| 1260 | |
| 1261 | // Sort list by qValue |
| 1262 | arsort( $langs, SORT_NUMERIC ); |
| 1263 | return $langs; |
| 1264 | } |
| 1265 | |
| 1266 | /** |
| 1267 | * Fetch the raw IP from the request |
| 1268 | * |
| 1269 | * @since 1.19 |
| 1270 | * @return string|null |
| 1271 | */ |
| 1272 | protected function getRawIP() { |
| 1273 | $remoteAddr = $this->getServerInfo( 'REMOTE_ADDR' ); |
| 1274 | if ( !$remoteAddr ) { |
| 1275 | return null; |
| 1276 | } |
| 1277 | if ( str_contains( $remoteAddr, ',' ) ) { |
| 1278 | throw new MWException( 'Remote IP must not contain multiple values' ); |
| 1279 | } |
| 1280 | |
| 1281 | return IPUtils::canonicalize( $remoteAddr ); |
| 1282 | } |
| 1283 | |
| 1284 | /** |
| 1285 | * Work out the IP address based on various globals |
| 1286 | * For trusted proxies, use the XFF client IP (first of the chain) |
| 1287 | * |
| 1288 | * @since 1.19 |
| 1289 | * @return string |
| 1290 | */ |
| 1291 | public function getIP(): string { |
| 1292 | global $wgUsePrivateIPs; |
| 1293 | |
| 1294 | # Return cached result |
| 1295 | if ( $this->ip !== null ) { |
| 1296 | return $this->ip; |
| 1297 | } |
| 1298 | |
| 1299 | # collect the originating IPs |
| 1300 | $ip = $this->getRawIP(); |
| 1301 | if ( !$ip ) { |
| 1302 | throw new MWException( 'Unable to determine IP.' ); |
| 1303 | } |
| 1304 | |
| 1305 | $services = MediaWikiServices::getInstance(); |
| 1306 | # Append XFF |
| 1307 | $forwardedFor = $this->getHeader( 'X-Forwarded-For' ); |
| 1308 | if ( $forwardedFor !== false ) { |
| 1309 | $proxyLookup = $services->getProxyLookup(); |
| 1310 | $isConfigured = $proxyLookup->isConfiguredProxy( $ip ); |
| 1311 | $ipchain = array_map( 'trim', explode( ',', $forwardedFor ) ); |
| 1312 | $ipchain = array_reverse( $ipchain ); |
| 1313 | array_unshift( $ipchain, $ip ); |
| 1314 | |
| 1315 | # Step through XFF list and find the last address in the list which is a |
| 1316 | # trusted server. Set $ip to the IP address given by that trusted server, |
| 1317 | # unless the address is not sensible (e.g. private). However, prefer private |
| 1318 | # IP addresses over proxy servers controlled by this site (more sensible). |
| 1319 | # Note that some XFF values might be "unknown" with Squid/Varnish. |
| 1320 | foreach ( $ipchain as $i => $curIP ) { |
| 1321 | $curIP = IPUtils::sanitizeIP( |
| 1322 | IPUtils::canonicalize( |
| 1323 | self::canonicalizeIPv6LoopbackAddress( $curIP ) |
| 1324 | ) |
| 1325 | ); |
| 1326 | if ( !$curIP || !isset( $ipchain[$i + 1] ) || $ipchain[$i + 1] === 'unknown' |
| 1327 | || !$proxyLookup->isTrustedProxy( $curIP ) |
| 1328 | ) { |
| 1329 | break; // IP is not valid/trusted or does not point to anything |
| 1330 | } |
| 1331 | if ( |
| 1332 | IPUtils::isPublic( $ipchain[$i + 1] ) || |
| 1333 | $wgUsePrivateIPs || |
| 1334 | // T50919; treat IP as valid |
| 1335 | $proxyLookup->isConfiguredProxy( $curIP ) |
| 1336 | ) { |
| 1337 | $nextIP = $ipchain[$i + 1]; |
| 1338 | |
| 1339 | // Follow the next IP according to the proxy |
| 1340 | $nextIP = IPUtils::canonicalize( |
| 1341 | self::canonicalizeIPv6LoopbackAddress( $nextIP ) |
| 1342 | ); |
| 1343 | if ( !$nextIP && $isConfigured ) { |
| 1344 | // We have not yet made it past CDN/proxy servers of this site, |
| 1345 | // so either they are misconfigured or there is some IP spoofing. |
| 1346 | throw new MWException( "Invalid IP given in XFF '$forwardedFor'." ); |
| 1347 | } |
| 1348 | $ip = $nextIP; |
| 1349 | |
| 1350 | // keep traversing the chain |
| 1351 | continue; |
| 1352 | } |
| 1353 | break; |
| 1354 | } |
| 1355 | } |
| 1356 | |
| 1357 | // Allow extensions to modify the result |
| 1358 | $hookContainer = $services->getHookContainer(); |
| 1359 | // Optimisation: Hot code called on most requests (T85805). |
| 1360 | if ( $hookContainer->isRegistered( 'GetIP' ) ) { |
| 1361 | // @phan-suppress-next-line PhanTypeMismatchArgument Type mismatch on pass-by-ref args |
| 1362 | ( new HookRunner( $hookContainer ) )->onGetIP( $ip ); |
| 1363 | } |
| 1364 | |
| 1365 | if ( !$ip ) { |
| 1366 | throw new MWException( 'Unable to determine IP.' ); |
| 1367 | } |
| 1368 | |
| 1369 | $this->ip = $ip; |
| 1370 | return $ip; |
| 1371 | } |
| 1372 | |
| 1373 | /** |
| 1374 | * Converts ::1 (IPv6 loopback address) to 127.0.0.1 (IPv4 loopback address); |
| 1375 | * assists in matching trusted proxies. |
| 1376 | * |
| 1377 | * @param string $ip |
| 1378 | * @return string either '127.0.0.1' or $ip |
| 1379 | * @since 1.36 |
| 1380 | */ |
| 1381 | public static function canonicalizeIPv6LoopbackAddress( $ip ) { |
| 1382 | // Code moved from IPUtils library. See T248237#6614927 |
| 1383 | if ( preg_match( '/^0*' . IPUtils::RE_IPV6_GAP . '1$/', $ip ) ) { |
| 1384 | return '127.0.0.1'; |
| 1385 | } |
| 1386 | return $ip; |
| 1387 | } |
| 1388 | |
| 1389 | /** |
| 1390 | * @param string $ip |
| 1391 | * @return void |
| 1392 | * @since 1.21 |
| 1393 | */ |
| 1394 | public function setIP( $ip ) { |
| 1395 | $this->ip = $ip; |
| 1396 | } |
| 1397 | |
| 1398 | /** |
| 1399 | * Check if this request uses a "safe" HTTP method |
| 1400 | * |
| 1401 | * Safe methods are verbs (e.g. GET/HEAD/OPTIONS) used for obtaining content. Such requests |
| 1402 | * are not expected to mutate content, especially in ways attributable to the client. Verbs |
| 1403 | * like POST and PUT are typical of non-safe requests which often change content. |
| 1404 | * |
| 1405 | * @return bool |
| 1406 | * @see https://tools.ietf.org/html/rfc7231#section-4.2.1 |
| 1407 | * @see https://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html |
| 1408 | * @since 1.28 |
| 1409 | */ |
| 1410 | public function hasSafeMethod() { |
| 1411 | if ( $this->getServerInfo( 'REQUEST_METHOD' ) === null ) { |
| 1412 | return false; // CLI mode |
| 1413 | } |
| 1414 | |
| 1415 | return in_array( $this->getServerInfo( 'REQUEST_METHOD' ), [ 'GET', 'HEAD', 'OPTIONS', 'TRACE' ] ); |
| 1416 | } |
| 1417 | |
| 1418 | /** |
| 1419 | * Whether this request should be identified as being "safe" |
| 1420 | * |
| 1421 | * This means that the client is not requesting any state changes and that database writes |
| 1422 | * are not inherently required. Ideally, no visible updates would happen at all. If they |
| 1423 | * must, then they should not be publicly attributed to the end user. |
| 1424 | * |
| 1425 | * In more detail: |
| 1426 | * - Cache populations and refreshes MAY occur. |
| 1427 | * - Private user session updates and private server logging MAY occur. |
| 1428 | * - Updates to private viewing activity data MAY occur via DeferredUpdates. |
| 1429 | * - Other updates SHOULD NOT occur (e.g. modifying content assets). |
| 1430 | * |
| 1431 | * @deprecated since 1.41, use hasSafeMethod() instead. |
| 1432 | * |
| 1433 | * @return bool |
| 1434 | * @see https://tools.ietf.org/html/rfc7231#section-4.2.1 |
| 1435 | * @see https://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html |
| 1436 | * @since 1.28 |
| 1437 | */ |
| 1438 | public function isSafeRequest() { |
| 1439 | wfDeprecated( __METHOD__, '1.41' ); |
| 1440 | if ( $this->markedAsSafe && $this->wasPosted() ) { |
| 1441 | return true; // marked as a "safe" POST |
| 1442 | } |
| 1443 | |
| 1444 | return $this->hasSafeMethod(); |
| 1445 | } |
| 1446 | |
| 1447 | /** |
| 1448 | * Mark this request as identified as being nullipotent even if it is a POST request |
| 1449 | * |
| 1450 | * POST requests are often used due to the need for a client payload, even if the request |
| 1451 | * is otherwise equivalent to a "safe method" request. |
| 1452 | * |
| 1453 | * @deprecated since 1.41 |
| 1454 | * |
| 1455 | * @see https://tools.ietf.org/html/rfc7231#section-4.2.1 |
| 1456 | * @see https://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html |
| 1457 | * @since 1.28 |
| 1458 | */ |
| 1459 | public function markAsSafeRequest() { |
| 1460 | wfDeprecated( __METHOD__, '1.41' ); |
| 1461 | $this->markedAsSafe = true; |
| 1462 | } |
| 1463 | |
| 1464 | /** |
| 1465 | * Determine if the request URL matches one of a given set of canonical CDN URLs. |
| 1466 | * |
| 1467 | * MediaWiki uses this to determine whether to set a long 'Cache-Control: s-maxage=' |
| 1468 | * header on the response. {@see MainConfigNames::CdnMatchParameterOrder} controls whether |
| 1469 | * the matching is sensitive to the order of query parameters. |
| 1470 | * |
| 1471 | * @param string[] $cdnUrls URLs to match against |
| 1472 | * @return bool |
| 1473 | * @since 1.39 |
| 1474 | */ |
| 1475 | public function matchURLForCDN( array $cdnUrls ) { |
| 1476 | $services = MediaWikiServices::getInstance(); |
| 1477 | $reqUrl = (string)$services->getUrlUtils()->expand( $this->getRequestURL(), PROTO_INTERNAL ); |
| 1478 | $config = $services->getMainConfig(); |
| 1479 | if ( $config->get( MainConfigNames::CdnMatchParameterOrder ) ) { |
| 1480 | // Strict matching |
| 1481 | return in_array( $reqUrl, $cdnUrls, true ); |
| 1482 | } |
| 1483 | |
| 1484 | // Loose matching (order of query parameters is ignored) |
| 1485 | $reqUrlParts = explode( '?', $reqUrl, 2 ); |
| 1486 | $reqUrlBase = $reqUrlParts[0]; |
| 1487 | $reqUrlParams = count( $reqUrlParts ) === 2 ? explode( '&', $reqUrlParts[1] ) : []; |
| 1488 | // The order of parameters after the sort() call below does not match |
| 1489 | // the order set by the CDN, and does not need to. The CDN needs to |
| 1490 | // take special care to preserve the relative order of duplicate keys |
| 1491 | // and array-like parameters. |
| 1492 | sort( $reqUrlParams ); |
| 1493 | foreach ( $cdnUrls as $cdnUrl ) { |
| 1494 | if ( strlen( $reqUrl ) !== strlen( $cdnUrl ) ) { |
| 1495 | continue; |
| 1496 | } |
| 1497 | $cdnUrlParts = explode( '?', $cdnUrl, 2 ); |
| 1498 | $cdnUrlBase = $cdnUrlParts[0]; |
| 1499 | if ( $reqUrlBase !== $cdnUrlBase ) { |
| 1500 | continue; |
| 1501 | } |
| 1502 | $cdnUrlParams = count( $cdnUrlParts ) === 2 ? explode( '&', $cdnUrlParts[1] ) : []; |
| 1503 | sort( $cdnUrlParams ); |
| 1504 | if ( $reqUrlParams === $cdnUrlParams ) { |
| 1505 | return true; |
| 1506 | } |
| 1507 | } |
| 1508 | return false; |
| 1509 | } |
| 1510 | } |
| 1511 | |
| 1512 | /** @deprecated class alias since 1.41 */ |
| 1513 | class_alias( WebRequest::class, 'WebRequest' ); |