wikimedia /
mediawiki
Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
Complex classes like WebRequest often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use WebRequest, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 37 | class WebRequest { |
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| 38 | protected $data, $headers = []; |
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| 39 | |||
| 40 | /** |
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| 41 | * Flag to make WebRequest::getHeader return an array of values. |
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| 42 | * @since 1.26 |
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| 43 | */ |
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| 44 | const GETHEADER_LIST = 1; |
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| 45 | |||
| 46 | /** |
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| 47 | * The unique request ID. |
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| 48 | * @var string |
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| 49 | */ |
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| 50 | private static $reqId; |
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| 51 | |||
| 52 | /** |
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| 53 | * Lazy-init response object |
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| 54 | * @var WebResponse |
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| 55 | */ |
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| 56 | private $response; |
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| 57 | |||
| 58 | /** |
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| 59 | * Cached client IP address |
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| 60 | * @var string |
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| 61 | */ |
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| 62 | private $ip; |
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| 63 | |||
| 64 | /** |
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| 65 | * The timestamp of the start of the request, with microsecond precision. |
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| 66 | * @var float |
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| 67 | */ |
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| 68 | protected $requestTime; |
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| 69 | |||
| 70 | /** |
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| 71 | * Cached URL protocol |
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| 72 | * @var string |
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| 73 | */ |
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| 74 | protected $protocol; |
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| 75 | |||
| 76 | /** |
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| 77 | * @var SessionId|null Session ID to use for this |
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| 78 | * request. We can't save the session directly due to reference cycles not |
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| 79 | * working too well (slow GC in Zend and never collected in HHVM). |
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| 80 | */ |
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| 81 | protected $sessionId = null; |
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| 82 | |||
| 83 | public function __construct() { |
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| 91 | |||
| 92 | /** |
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| 93 | * Extract relevant query arguments from the http request uri's path |
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| 94 | * to be merged with the normal php provided query arguments. |
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| 95 | * Tries to use the REQUEST_URI data if available and parses it |
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| 96 | * according to the wiki's configuration looking for any known pattern. |
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| 97 | * |
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| 98 | * If the REQUEST_URI is not provided we'll fall back on the PATH_INFO |
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| 99 | * provided by the server if any and use that to set a 'title' parameter. |
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| 100 | * |
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| 101 | * @param string $want If this is not 'all', then the function |
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| 102 | * will return an empty array if it determines that the URL is |
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| 103 | * inside a rewrite path. |
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| 104 | * |
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| 105 | * @return array Any query arguments found in path matches. |
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| 106 | */ |
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| 107 | public static function getPathInfo( $want = 'all' ) { |
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| 183 | |||
| 184 | /** |
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| 185 | * Work out an appropriate URL prefix containing scheme and host, based on |
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| 186 | * information detected from $_SERVER |
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| 187 | * |
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| 188 | * @return string |
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| 189 | */ |
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| 190 | public static function detectServer() { |
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| 228 | |||
| 229 | /** |
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| 230 | * Detect the protocol from $_SERVER. |
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| 231 | * This is for use prior to Setup.php, when no WebRequest object is available. |
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| 232 | * At other times, use the non-static function getProtocol(). |
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| 233 | * |
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| 234 | * @return array |
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| 235 | */ |
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| 236 | public static function detectProtocol() { |
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| 245 | |||
| 246 | /** |
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| 247 | * Get the number of seconds to have elapsed since request start, |
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| 248 | * in fractional seconds, with microsecond resolution. |
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| 249 | * |
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| 250 | * @return float |
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| 251 | * @since 1.25 |
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| 252 | */ |
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| 253 | public function getElapsedTime() { |
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| 256 | |||
| 257 | /** |
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| 258 | * Get the unique request ID. |
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| 259 | * This is either the value of the UNIQUE_ID envvar (if present) or a |
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| 260 | * randomly-generated 24-character string. |
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| 261 | * |
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| 262 | * @return string |
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| 263 | * @since 1.27 |
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| 264 | */ |
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| 265 | public static function getRequestId() { |
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| 273 | |||
| 274 | /** |
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| 275 | * Override the unique request ID. This is for sub-requests, such as jobs, |
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| 276 | * that wish to use the same id but are not part of the same execution context. |
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| 277 | * |
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| 278 | * @param string $id |
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| 279 | * @since 1.27 |
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| 280 | */ |
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| 281 | public static function overrideRequestId( $id ) { |
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| 284 | |||
| 285 | /** |
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| 286 | * Get the current URL protocol (http or https) |
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| 287 | * @return string |
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| 288 | */ |
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| 289 | public function getProtocol() { |
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| 295 | |||
| 296 | /** |
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| 297 | * Check for title, action, and/or variant data in the URL |
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| 298 | * and interpolate it into the GET variables. |
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| 299 | * This should only be run after $wgContLang is available, |
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| 300 | * as we may need the list of language variants to determine |
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| 301 | * available variant URLs. |
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| 302 | */ |
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| 303 | public function interpolateTitle() { |
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| 314 | |||
| 315 | /** |
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| 316 | * URL rewriting function; tries to extract page title and, |
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| 317 | * optionally, one other fixed parameter value from a URL path. |
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| 318 | * |
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| 319 | * @param string $path The URL path given from the client |
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| 320 | * @param array $bases One or more URLs, optionally with $1 at the end |
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| 321 | * @param string $key If provided, the matching key in $bases will be |
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| 322 | * passed on as the value of this URL parameter |
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| 323 | * @return array Array of URL variables to interpolate; empty if no match |
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| 324 | */ |
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| 325 | static function extractTitle( $path, $bases, $key = false ) { |
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| 343 | |||
| 344 | /** |
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| 345 | * Recursively normalizes UTF-8 strings in the given array. |
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| 346 | * |
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| 347 | * @param string|array $data |
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| 348 | * @return array|string Cleaned-up version of the given |
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| 349 | * @private |
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| 350 | */ |
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| 351 | function normalizeUnicode( $data ) { |
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| 364 | |||
| 365 | /** |
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| 366 | * Fetch a value from the given array or return $default if it's not set. |
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| 367 | * |
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| 368 | * @param array $arr |
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| 369 | * @param string $name |
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| 370 | * @param mixed $default |
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| 371 | * @return mixed |
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| 372 | */ |
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| 373 | private function getGPCVal( $arr, $name, $default ) { |
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| 393 | |||
| 394 | /** |
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| 395 | * Fetch a scalar from the input or return $default if it's not set. |
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| 396 | * Returns a string. Arrays are discarded. Useful for |
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| 397 | * non-freeform text inputs (e.g. predefined internal text keys |
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| 398 | * selected by a drop-down menu). For freeform input, see getText(). |
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| 399 | * |
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| 400 | * @param string $name |
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| 401 | * @param string $default Optional default (or null) |
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| 402 | * @return string |
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| 403 | */ |
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| 404 | public function getVal( $name, $default = null ) { |
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| 415 | |||
| 416 | /** |
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| 417 | * Set an arbitrary value into our get/post data. |
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| 418 | * |
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| 419 | * @param string $key Key name to use |
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| 420 | * @param mixed $value Value to set |
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| 421 | * @return mixed Old value if one was present, null otherwise |
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| 422 | */ |
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| 423 | public function setVal( $key, $value ) { |
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| 428 | |||
| 429 | /** |
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| 430 | * Unset an arbitrary value from our get/post data. |
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| 431 | * |
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| 432 | * @param string $key Key name to use |
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| 433 | * @return mixed Old value if one was present, null otherwise |
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| 434 | */ |
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| 435 | public function unsetVal( $key ) { |
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| 444 | |||
| 445 | /** |
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| 446 | * Fetch an array from the input or return $default if it's not set. |
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| 447 | * If source was scalar, will return an array with a single element. |
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| 448 | * If no source and no default, returns null. |
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| 449 | * |
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| 450 | * @param string $name |
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| 451 | * @param array $default Optional default (or null) |
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| 452 | * @return array |
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| 453 | */ |
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| 454 | public function getArray( $name, $default = null ) { |
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| 462 | |||
| 463 | /** |
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| 464 | * Fetch an array of integers, or return $default if it's not set. |
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| 465 | * If source was scalar, will return an array with a single element. |
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| 466 | * If no source and no default, returns null. |
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| 467 | * If an array is returned, contents are guaranteed to be integers. |
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| 468 | * |
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| 469 | * @param string $name |
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| 470 | * @param array $default Option default (or null) |
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| 471 | * @return array Array of ints |
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| 472 | */ |
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| 473 | public function getIntArray( $name, $default = null ) { |
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| 480 | |||
| 481 | /** |
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| 482 | * Fetch an integer value from the input or return $default if not set. |
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| 483 | * Guaranteed to return an integer; non-numeric input will typically |
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| 484 | * return 0. |
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| 485 | * |
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| 486 | * @param string $name |
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| 487 | * @param int $default |
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| 488 | * @return int |
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| 489 | */ |
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| 490 | public function getInt( $name, $default = 0 ) { |
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| 493 | |||
| 494 | /** |
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| 495 | * Fetch an integer value from the input or return null if empty. |
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| 496 | * Guaranteed to return an integer or null; non-numeric input will |
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| 497 | * typically return null. |
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| 498 | * |
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| 499 | * @param string $name |
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| 500 | * @return int|null |
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| 501 | */ |
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| 502 | public function getIntOrNull( $name ) { |
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| 508 | |||
| 509 | /** |
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| 510 | * Fetch a floating point value from the input or return $default if not set. |
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| 511 | * Guaranteed to return a float; non-numeric input will typically |
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| 512 | * return 0. |
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| 513 | * |
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| 514 | * @since 1.23 |
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| 515 | * @param string $name |
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| 516 | * @param float $default |
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| 517 | * @return float |
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| 518 | */ |
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| 519 | public function getFloat( $name, $default = 0.0 ) { |
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| 522 | |||
| 523 | /** |
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| 524 | * Fetch a boolean value from the input or return $default if not set. |
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| 525 | * Guaranteed to return true or false, with normal PHP semantics for |
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| 526 | * boolean interpretation of strings. |
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| 527 | * |
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| 528 | * @param string $name |
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| 529 | * @param bool $default |
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| 530 | * @return bool |
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| 531 | */ |
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| 532 | public function getBool( $name, $default = false ) { |
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| 535 | |||
| 536 | /** |
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| 537 | * Fetch a boolean value from the input or return $default if not set. |
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| 538 | * Unlike getBool, the string "false" will result in boolean false, which is |
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| 539 | * useful when interpreting information sent from JavaScript. |
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| 540 | * |
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| 541 | * @param string $name |
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| 542 | * @param bool $default |
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| 543 | * @return bool |
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| 544 | */ |
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| 545 | public function getFuzzyBool( $name, $default = false ) { |
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| 548 | |||
| 549 | /** |
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| 550 | * Return true if the named value is set in the input, whatever that |
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| 551 | * value is (even "0"). Return false if the named value is not set. |
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| 552 | * Example use is checking for the presence of check boxes in forms. |
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| 553 | * |
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| 554 | * @param string $name |
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| 555 | * @return bool |
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| 556 | */ |
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| 557 | public function getCheck( $name ) { |
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| 562 | |||
| 563 | /** |
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| 564 | * Fetch a text string from the given array or return $default if it's not |
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| 565 | * set. Carriage returns are stripped from the text, and with some language |
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| 566 | * modules there is an input transliteration applied. This should generally |
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| 567 | * be used for form "<textarea>" and "<input>" fields. Used for |
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| 568 | * user-supplied freeform text input (for which input transformations may |
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| 569 | * be required - e.g. Esperanto x-coding). |
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| 570 | * |
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| 571 | * @param string $name |
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| 572 | * @param string $default Optional |
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| 573 | * @return string |
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| 574 | */ |
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| 575 | public function getText( $name, $default = '' ) { |
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| 581 | |||
| 582 | /** |
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| 583 | * Extracts the given named values into an array. |
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| 584 | * If no arguments are given, returns all input values. |
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| 585 | * No transformation is performed on the values. |
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| 586 | * |
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| 587 | * @return array |
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| 588 | */ |
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| 589 | public function getValues() { |
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| 604 | |||
| 605 | /** |
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| 606 | * Returns the names of all input values excluding those in $exclude. |
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| 607 | * |
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| 608 | * @param array $exclude |
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| 609 | * @return array |
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| 610 | */ |
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| 611 | public function getValueNames( $exclude = [] ) { |
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| 614 | |||
| 615 | /** |
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| 616 | * Get the values passed in the query string. |
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| 617 | * No transformation is performed on the values. |
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| 618 | * |
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| 619 | * @return array |
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| 620 | */ |
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| 621 | public function getQueryValues() { |
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| 624 | |||
| 625 | /** |
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| 626 | * Return the contents of the Query with no decoding. Use when you need to |
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| 627 | * know exactly what was sent, e.g. for an OAuth signature over the elements. |
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| 628 | * |
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| 629 | * @return string |
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| 630 | */ |
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| 631 | public function getRawQueryString() { |
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| 634 | |||
| 635 | /** |
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| 636 | * Return the contents of the POST with no decoding. Use when you need to |
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| 637 | * know exactly what was sent, e.g. for an OAuth signature over the elements. |
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| 638 | * |
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| 639 | * @return string |
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| 640 | */ |
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| 641 | public function getRawPostString() { |
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| 647 | |||
| 648 | /** |
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| 649 | * Return the raw request body, with no processing. Cached since some methods |
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| 650 | * disallow reading the stream more than once. As stated in the php docs, this |
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| 651 | * does not work with enctype="multipart/form-data". |
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| 652 | * |
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| 653 | * @return string |
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| 654 | */ |
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| 655 | public function getRawInput() { |
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| 662 | |||
| 663 | /** |
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| 664 | * Get the HTTP method used for this request. |
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| 665 | * |
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| 666 | * @return string |
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| 667 | */ |
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| 668 | public function getMethod() { |
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| 671 | |||
| 672 | /** |
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| 673 | * Returns true if the present request was reached by a POST operation, |
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| 674 | * false otherwise (GET, HEAD, or command-line). |
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| 675 | * |
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| 676 | * Note that values retrieved by the object may come from the |
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| 677 | * GET URL etc even on a POST request. |
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| 678 | * |
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| 679 | * @return bool |
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| 680 | */ |
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| 681 | public function wasPosted() { |
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| 684 | |||
| 685 | /** |
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| 686 | * Return the session for this request |
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| 687 | * @since 1.27 |
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| 688 | * @note For performance, keep the session locally if you will be making |
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| 689 | * much use of it instead of calling this method repeatedly. |
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| 690 | * @return Session |
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| 691 | */ |
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| 692 | public function getSession() { |
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| 704 | |||
| 705 | /** |
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| 706 | * Set the session for this request |
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| 707 | * @since 1.27 |
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| 708 | * @private For use by MediaWiki\Session classes only |
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| 709 | * @param SessionId $sessionId |
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| 710 | */ |
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| 711 | public function setSessionId( SessionId $sessionId ) { |
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| 714 | |||
| 715 | /** |
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| 716 | * Get the session id for this request, if any |
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| 717 | * @since 1.27 |
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| 718 | * @private For use by MediaWiki\Session classes only |
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| 719 | * @return SessionId|null |
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| 720 | */ |
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| 721 | public function getSessionId() { |
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| 724 | |||
| 725 | /** |
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| 726 | * Returns true if the request has a persistent session. |
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| 727 | * This does not necessarily mean that the user is logged in! |
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| 728 | * |
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| 729 | * @deprecated since 1.27, use |
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| 730 | * \MediaWiki\Session\SessionManager::singleton()->getPersistedSessionId() |
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| 731 | * instead. |
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| 732 | * @return bool |
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| 733 | */ |
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| 734 | public function checkSessionCookie() { |
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| 740 | |||
| 741 | /** |
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| 742 | * Get a cookie from the $_COOKIE jar |
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| 743 | * |
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| 744 | * @param string $key The name of the cookie |
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| 745 | * @param string $prefix A prefix to use for the cookie name, if not $wgCookiePrefix |
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| 746 | * @param mixed $default What to return if the value isn't found |
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| 747 | * @return mixed Cookie value or $default if the cookie not set |
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| 748 | */ |
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| 749 | public function getCookie( $key, $prefix = null, $default = null ) { |
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| 756 | |||
| 757 | /** |
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| 758 | * Return the path and query string portion of the main request URI. |
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| 759 | * This will be suitable for use as a relative link in HTML output. |
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| 760 | * |
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| 761 | * @throws MWException |
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| 762 | * @return string |
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| 763 | */ |
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| 764 | public static function getGlobalRequestURL() { |
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| 800 | |||
| 801 | /** |
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| 802 | * Return the path and query string portion of the request URI. |
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| 803 | * This will be suitable for use as a relative link in HTML output. |
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| 804 | * |
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| 805 | * @throws MWException |
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| 806 | * @return string |
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| 807 | */ |
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| 808 | public function getRequestURL() { |
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| 811 | |||
| 812 | /** |
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| 813 | * Return the request URI with the canonical service and hostname, path, |
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| 814 | * and query string. This will be suitable for use as an absolute link |
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| 815 | * in HTML or other output. |
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| 816 | * |
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| 817 | * If $wgServer is protocol-relative, this will return a fully |
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| 818 | * qualified URL with the protocol that was used for this request. |
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| 819 | * |
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| 820 | * @return string |
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| 821 | */ |
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| 822 | public function getFullRequestURL() { |
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| 825 | |||
| 826 | /** |
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| 827 | * @param string $key |
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| 828 | * @param string $value |
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| 829 | * @return string |
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| 830 | */ |
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| 831 | public function appendQueryValue( $key, $value ) { |
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| 834 | |||
| 835 | /** |
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| 836 | * Appends or replaces value of query variables. |
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| 837 | * |
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| 838 | * @param array $array Array of values to replace/add to query |
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| 839 | * @return string |
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| 840 | */ |
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| 841 | public function appendQueryArray( $array ) { |
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| 848 | |||
| 849 | /** |
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| 850 | * Check for limit and offset parameters on the input, and return sensible |
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| 851 | * defaults if not given. The limit must be positive and is capped at 5000. |
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| 852 | * Offset must be positive but is not capped. |
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| 853 | * |
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| 854 | * @param int $deflimit Limit to use if no input and the user hasn't set the option. |
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| 855 | * @param string $optionname To specify an option other than rclimit to pull from. |
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| 856 | * @return int[] First element is limit, second is offset |
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| 857 | */ |
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| 858 | public function getLimitOffset( $deflimit = 50, $optionname = 'rclimit' ) { |
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| 882 | |||
| 883 | /** |
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| 884 | * Return the path to the temporary file where PHP has stored the upload. |
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| 885 | * |
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| 886 | * @param string $key |
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| 887 | * @return string|null String or null if no such file. |
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| 888 | */ |
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| 889 | public function getFileTempname( $key ) { |
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| 893 | |||
| 894 | /** |
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| 895 | * Return the upload error or 0 |
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| 896 | * |
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| 897 | * @param string $key |
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| 898 | * @return int |
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| 899 | */ |
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| 900 | public function getUploadError( $key ) { |
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| 904 | |||
| 905 | /** |
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| 906 | * Return the original filename of the uploaded file, as reported by |
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| 907 | * the submitting user agent. HTML-style character entities are |
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| 908 | * interpreted and normalized to Unicode normalization form C, in part |
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| 909 | * to deal with weird input from Safari with non-ASCII filenames. |
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| 910 | * |
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| 911 | * Other than this the name is not verified for being a safe filename. |
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| 912 | * |
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| 913 | * @param string $key |
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| 914 | * @return string|null String or null if no such file. |
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| 915 | */ |
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| 916 | public function getFileName( $key ) { |
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| 920 | |||
| 921 | /** |
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| 922 | * Return a WebRequestUpload object corresponding to the key |
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| 923 | * |
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| 924 | * @param string $key |
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| 925 | * @return WebRequestUpload |
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| 926 | */ |
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| 927 | public function getUpload( $key ) { |
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| 930 | |||
| 931 | /** |
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| 932 | * Return a handle to WebResponse style object, for setting cookies, |
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| 933 | * headers and other stuff, for Request being worked on. |
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| 934 | * |
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| 935 | * @return WebResponse |
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| 936 | */ |
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| 937 | public function response() { |
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| 945 | |||
| 946 | /** |
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| 947 | * Initialise the header list |
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| 948 | */ |
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| 949 | protected function initHeaders() { |
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| 970 | |||
| 971 | /** |
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| 972 | * Get an array containing all request headers |
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| 973 | * |
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| 974 | * @return array Mapping header name to its value |
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| 975 | */ |
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| 976 | public function getAllHeaders() { |
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| 980 | |||
| 981 | /** |
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| 982 | * Get a request header, or false if it isn't set. |
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| 983 | * |
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| 984 | * @param string $name Case-insensitive header name |
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| 985 | * @param int $flags Bitwise combination of: |
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| 986 | * WebRequest::GETHEADER_LIST Treat the header as a comma-separated list |
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| 987 | * of values, as described in RFC 2616 § 4.2. |
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| 988 | * (since 1.26). |
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| 989 | * @return string|array|bool False if header is unset; otherwise the |
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| 990 | * header value(s) as either a string (the default) or an array, if |
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| 991 | * WebRequest::GETHEADER_LIST flag was set. |
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| 992 | */ |
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| 993 | public function getHeader( $name, $flags = 0 ) { |
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| 1005 | |||
| 1006 | /** |
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| 1007 | * Get data from the session |
||
| 1008 | * |
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| 1009 | * @note Prefer $this->getSession() instead if making multiple calls. |
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| 1010 | * @param string $key Name of key in the session |
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| 1011 | * @return mixed |
||
| 1012 | */ |
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| 1013 | public function getSessionData( $key ) { |
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| 1016 | |||
| 1017 | /** |
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| 1018 | * Set session data |
||
| 1019 | * |
||
| 1020 | * @note Prefer $this->getSession() instead if making multiple calls. |
||
| 1021 | * @param string $key Name of key in the session |
||
| 1022 | * @param mixed $data |
||
| 1023 | */ |
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| 1024 | public function setSessionData( $key, $data ) { |
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| 1027 | |||
| 1028 | /** |
||
| 1029 | * Check if Internet Explorer will detect an incorrect cache extension in |
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| 1030 | * PATH_INFO or QUERY_STRING. If the request can't be allowed, show an error |
||
| 1031 | * message or redirect to a safer URL. Returns true if the URL is OK, and |
||
| 1032 | * false if an error message has been shown and the request should be aborted. |
||
| 1033 | * |
||
| 1034 | * @param array $extWhitelist |
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| 1035 | * @throws HttpError |
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| 1036 | * @return bool |
||
| 1037 | */ |
||
| 1038 | public function checkUrlExtension( $extWhitelist = [] ) { |
||
| 1054 | |||
| 1055 | /** |
||
| 1056 | * Attempt to redirect to a URL with a QUERY_STRING that's not dangerous in |
||
| 1057 | * IE 6. Returns true if it was successful, false otherwise. |
||
| 1058 | * |
||
| 1059 | * @param string $url |
||
| 1060 | * @return bool |
||
| 1061 | */ |
||
| 1062 | protected function doSecurityRedirect( $url ) { |
||
| 1087 | |||
| 1088 | /** |
||
| 1089 | * Parse the Accept-Language header sent by the client into an array |
||
| 1090 | * |
||
| 1091 | * @return array Array( languageCode => q-value ) sorted by q-value in |
||
| 1092 | * descending order then appearing time in the header in ascending order. |
||
| 1093 | * May contain the "language" '*', which applies to languages other than those explicitly listed. |
||
| 1094 | * This is aligned with rfc2616 section 14.4 |
||
| 1095 | * Preference for earlier languages appears in rfc3282 as an extension to HTTP/1.1. |
||
| 1096 | */ |
||
| 1097 | public function getAcceptLang() { |
||
| 1141 | |||
| 1142 | /** |
||
| 1143 | * Fetch the raw IP from the request |
||
| 1144 | * |
||
| 1145 | * @since 1.19 |
||
| 1146 | * |
||
| 1147 | * @throws MWException |
||
| 1148 | * @return string |
||
| 1149 | */ |
||
| 1150 | protected function getRawIP() { |
||
| 1164 | |||
| 1165 | /** |
||
| 1166 | * Work out the IP address based on various globals |
||
| 1167 | * For trusted proxies, use the XFF client IP (first of the chain) |
||
| 1168 | * |
||
| 1169 | * @since 1.19 |
||
| 1170 | * |
||
| 1171 | * @throws MWException |
||
| 1172 | * @return string |
||
| 1173 | */ |
||
| 1174 | public function getIP() { |
||
| 1239 | |||
| 1240 | /** |
||
| 1241 | * @param string $ip |
||
| 1242 | * @return void |
||
| 1243 | * @since 1.21 |
||
| 1244 | */ |
||
| 1245 | public function setIP( $ip ) { |
||
| 1248 | } |
||
| 1249 |
Loading history...
Only declaring a single property per statement allows you to later on add doc comments more easily.
It is also recommended by PSR2, so it is a common style that many people expect.