includes/WebRequest.php

   1 <?php
   2 /**
   3  * Deal with importing all those nasty globals and things
   4  *
   5  * Copyright © 2003 Brion Vibber <brion@pobox.com>
   6  * http://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 /**
  27  * The WebRequest class encapsulates getting at data passed in the
  28  * URL or via a POSTed form, handling remove of "magic quotes" slashes,
  29  * stripping illegal input characters and normalizing Unicode sequences.
  30  *
  31  * Usually this is used via a global singleton, $wgRequest. You should
  32  * not create a second WebRequest object; make a FauxRequest object if
  33  * you want to pass arbitrary data to some function in place of the web
  34  * input.
  35  *
  36  * @ingroup HTTP
  37  */
  38 class WebRequest {
  39         protected $data, $headers = array();
  40
  41         /**
  42          * Lazy-init response object
  43          * @var WebResponse
  44          */
  45         private $response;
  46
  47         /**
  48          * Cached client IP address
  49          * @var String
  50          */
  51         private $ip;
  52
  53         public function __construct() {
  54                 /// @todo FIXME: This preemptive de-quoting can interfere with other web libraries
  55                 ///        and increases our memory footprint. It would be cleaner to do on
  56                 ///        demand; but currently we have no wrapper for $_SERVER etc.
  57                 $this->checkMagicQuotes();
  58
  59                 // POST overrides GET data
  60                 // We don't use $_REQUEST here to avoid interference from cookies...
  61                 $this->data = $_POST + $_GET;
  62         }
  63
  64         /**
  65          * Extract relevant query arguments from the http request uri's path
  66          * to be merged with the normal php provided query arguments.
  67          * Tries to use the REQUEST_URI data if available and parses it
  68          * according to the wiki's configuration looking for any known pattern.
  69          *
  70          * If the REQUEST_URI is not provided we'll fall back on the PATH_INFO
  71          * provided by the server if any and use that to set a 'title' parameter.
  72          *
  73          * @param string $want If this is not 'all', then the function
  74          * will return an empty array if it determines that the URL is
  75          * inside a rewrite path.
  76          *
  77          * @return Array: Any query arguments found in path matches.
  78          */
  79         public static function getPathInfo( $want = 'all' ) {
  80                 global $wgUsePathInfo;
  81                 // PATH_INFO is mangled due to http://bugs.php.net/bug.php?id=31892
  82                 // And also by Apache 2.x, double slashes are converted to single slashes.
  83                 // So we will use REQUEST_URI if possible.
  84                 $matches = array();
  85                 if ( !empty( $_SERVER['REQUEST_URI'] ) ) {
  86                         // Slurp out the path portion to examine...
  87                         $url = $_SERVER['REQUEST_URI'];
  88                         if ( !preg_match( '!^https?://!', $url ) ) {
  89                                 $url = 'http://unused' . $url;
  90                         }
  91                         wfSuppressWarnings();
  92                         $a = parse_url( $url );
  93                         wfRestoreWarnings();
  94                         if ( $a ) {
  95                                 $path = isset( $a['path'] ) ? $a['path'] : '';
  96
  97                                 global $wgScript;
  98                                 if ( $path == $wgScript && $want !== 'all' ) {
  99                                         // Script inside a rewrite path?
 100                                         // Abort to keep from breaking...
 101                                         return $matches;
 102                                 }
 103
 104                                 $router = new PathRouter;
 105
 106                                 // Raw PATH_INFO style
 107                                 $router->add( "$wgScript/$1" );
 108
 109                                 if ( isset( $_SERVER['SCRIPT_NAME'] )
 110                                         && preg_match( '/\.php5?/', $_SERVER['SCRIPT_NAME'] ) )
 111                                 {
 112                                         # Check for SCRIPT_NAME, we handle index.php explicitly
 113                                         # But we do have some other .php files such as img_auth.php
 114                                         # Don't let root article paths clober the parsing for them
 115                                         $router->add( $_SERVER['SCRIPT_NAME'] . "/$1" );
 116                                 }
 117
 118                                 global $wgArticlePath;
 119                                 if ( $wgArticlePath ) {
 120                                         $router->add( $wgArticlePath );
 121                                 }
 122
 123                                 global $wgActionPaths;
 124                                 if ( $wgActionPaths ) {
 125                                         $router->add( $wgActionPaths, array( 'action' => '$key' ) );
 126                                 }
 127
 128                                 global $wgVariantArticlePath, $wgContLang;
 129                                 if ( $wgVariantArticlePath ) {
 130                                         $router->add( $wgVariantArticlePath,
 131                                                 array( 'variant' => '$2' ),
 132                                                 array( '$2' => $wgContLang->getVariants() )
 133                                         );
 134                                 }
 135
 136                                 wfRunHooks( 'WebRequestPathInfoRouter', array( $router ) );
 137
 138                                 $matches = $router->parse( $path );
 139                         }
 140                 } elseif ( $wgUsePathInfo ) {
 141                         if ( isset( $_SERVER['ORIG_PATH_INFO'] ) && $_SERVER['ORIG_PATH_INFO'] != '' ) {
 142                                 // Mangled PATH_INFO
 143                                 // http://bugs.php.net/bug.php?id=31892
 144                                 // Also reported when ini_get('cgi.fix_pathinfo')==false
 145                                 $matches['title'] = substr( $_SERVER['ORIG_PATH_INFO'], 1 );
 146
 147                         } elseif ( isset( $_SERVER['PATH_INFO'] ) && $_SERVER['PATH_INFO'] != '' ) {
 148                                 // Regular old PATH_INFO yay
 149                                 $matches['title'] = substr( $_SERVER['PATH_INFO'], 1 );
 150                         }
 151                 }
 152
 153                 return $matches;
 154         }
 155
 156         /**
 157          * Work out an appropriate URL prefix containing scheme and host, based on
 158          * information detected from $_SERVER
 159          *
 160          * @return string
 161          */
 162         public static function detectServer() {
 163                 list( $proto, $stdPort ) = self::detectProtocolAndStdPort();
 164
 165                 $varNames = array( 'HTTP_HOST', 'SERVER_NAME', 'HOSTNAME', 'SERVER_ADDR' );
 166                 $host = 'localhost';
 167                 $port = $stdPort;
 168                 foreach ( $varNames as $varName ) {
 169                         if ( !isset( $_SERVER[$varName] ) ) {
 170                                 continue;
 171                         }
 172                         $parts = IP::splitHostAndPort( $_SERVER[$varName] );
 173                         if ( !$parts ) {
 174                                 // Invalid, do not use
 175                                 continue;
 176                         }
 177                         $host = $parts[0];
 178                         if ( $parts[1] === false ) {
 179                                 if ( isset( $_SERVER['SERVER_PORT'] ) ) {
 180                                         $port = $_SERVER['SERVER_PORT'];
 181                                 } // else leave it as $stdPort
 182                         } else {
 183                                 $port = $parts[1];
 184                         }
 185                         break;
 186                 }
 187
 188                 return $proto . '://' . IP::combineHostAndPort( $host, $port, $stdPort );
 189         }
 190
 191         /**
 192          * @return array
 193          */
 194         public static function detectProtocolAndStdPort() {
 195                 if ( ( isset( $_SERVER['HTTPS'] ) && $_SERVER['HTTPS'] == 'on' ) ||
 196                         ( isset( $_SERVER['HTTP_X_FORWARDED_PROTO'] ) &&
 197                         $_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https' ) ) {
 198                         $arr = array( 'https', 443 );
 199                 } else {
 200                         $arr = array( 'http', 80 );
 201                 }
 202                 return $arr;
 203         }
 204
 205         /**
 206          * @return string
 207          */
 208         public static function detectProtocol() {
 209                 list( $proto, ) = self::detectProtocolAndStdPort();
 210                 return $proto;
 211         }
 212
 213         /**
 214          * Check for title, action, and/or variant data in the URL
 215          * and interpolate it into the GET variables.
 216          * This should only be run after $wgContLang is available,
 217          * as we may need the list of language variants to determine
 218          * available variant URLs.
 219          */
 220         public function interpolateTitle() {
 221                 // bug 16019: title interpolation on API queries is useless and sometimes harmful
 222                 if ( defined( 'MW_API' ) ) {
 223                         return;
 224                 }
 225
 226                 $matches = self::getPathInfo( 'title' );
 227                 foreach ( $matches as $key => $val ) {
 228                         $this->data[$key] = $_GET[$key] = $_REQUEST[$key] = $val;
 229                 }
 230         }
 231
 232         /**
 233          * URL rewriting function; tries to extract page title and,
 234          * optionally, one other fixed parameter value from a URL path.
 235          *
 236          * @param string $path the URL path given from the client
 237          * @param array $bases one or more URLs, optionally with $1 at the end
 238          * @param string $key if provided, the matching key in $bases will be
 239          *             passed on as the value of this URL parameter
 240          * @return array of URL variables to interpolate; empty if no match
 241          */
 242         static function extractTitle( $path, $bases, $key = false ) {
 243                 foreach ( (array)$bases as $keyValue => $base ) {
 244                         // Find the part after $wgArticlePath
 245                         $base = str_replace( '$1', '', $base );
 246                         $baseLen = strlen( $base );
 247                         if ( substr( $path, 0, $baseLen ) == $base ) {
 248                                 $raw = substr( $path, $baseLen );
 249                                 if ( $raw !== '' ) {
 250                                         $matches = array( 'title' => rawurldecode( $raw ) );
 251                                         if ( $key ) {
 252                                                 $matches[$key] = $keyValue;
 253                                         }
 254                                         return $matches;
 255                                 }
 256                         }
 257                 }
 258                 return array();
 259         }
 260
 261         /**
 262          * Recursively strips slashes from the given array;
 263          * used for undoing the evil that is magic_quotes_gpc.
 264          *
 265          * @param array $arr will be modified
 266          * @param bool $topLevel Specifies if the array passed is from the top
 267          * level of the source. In PHP5 magic_quotes only escapes the first level
 268          * of keys that belong to an array.
 269          * @return array the original array
 270          * @see http://www.php.net/manual/en/function.get-magic-quotes-gpc.php#49612
 271          */
 272         private function &fix_magic_quotes( &$arr, $topLevel = true ) {
 273                 $clean = array();
 274                 foreach ( $arr as $key => $val ) {
 275                         if ( is_array( $val ) ) {
 276                                 $cleanKey = $topLevel ? stripslashes( $key ) : $key;
 277                                 $clean[$cleanKey] = $this->fix_magic_quotes( $arr[$key], false );
 278                         } else {
 279                                 $cleanKey = stripslashes( $key );
 280                                 $clean[$cleanKey] = stripslashes( $val );
 281                         }
 282                 }
 283                 $arr = $clean;
 284                 return $arr;
 285         }
 286
 287         /**
 288          * If magic_quotes_gpc option is on, run the global arrays
 289          * through fix_magic_quotes to strip out the stupid slashes.
 290          * WARNING: This should only be done once! Running a second
 291          * time could damage the values.
 292          */
 293         private function checkMagicQuotes() {
 294                 $mustFixQuotes = function_exists( 'get_magic_quotes_gpc' )
 295                         && get_magic_quotes_gpc();
 296                 if ( $mustFixQuotes ) {
 297                         $this->fix_magic_quotes( $_COOKIE );
 298                         $this->fix_magic_quotes( $_ENV );
 299                         $this->fix_magic_quotes( $_GET );
 300                         $this->fix_magic_quotes( $_POST );
 301                         $this->fix_magic_quotes( $_REQUEST );
 302                         $this->fix_magic_quotes( $_SERVER );
 303                 }
 304         }
 305
 306         /**
 307          * Recursively normalizes UTF-8 strings in the given array.
 308          *
 309          * @param $data string|array
 310          * @return array|string cleaned-up version of the given
 311          * @private
 312          */
 313         function normalizeUnicode( $data ) {
 314                 if ( is_array( $data ) ) {
 315                         foreach ( $data as $key => $val ) {
 316                                 $data[$key] = $this->normalizeUnicode( $val );
 317                         }
 318                 } else {
 319                         global $wgContLang;
 320                         $data = isset( $wgContLang ) ? $wgContLang->normalize( $data ) : UtfNormal::cleanUp( $data );
 321                 }
 322                 return $data;
 323         }
 324
 325         /**
 326          * Fetch a value from the given array or return $default if it's not set.
 327          *
 328          * @param $arr Array
 329          * @param $name String
 330          * @param $default Mixed
 331          * @return mixed
 332          */
 333         private function getGPCVal( $arr, $name, $default ) {
 334                 # PHP is so nice to not touch input data, except sometimes:
 335                 # http://us2.php.net/variables.external#language.variables.external.dot-in-names
 336                 # Work around PHP *feature* to avoid *bugs* elsewhere.
 337                 $name = strtr( $name, '.', '_' );
 338                 if ( isset( $arr[$name] ) ) {
 339                         global $wgContLang;
 340                         $data = $arr[$name];
 341                         if ( isset( $_GET[$name] ) && !is_array( $data ) ) {
 342                                 # Check for alternate/legacy character encoding.
 343                                 if ( isset( $wgContLang ) ) {
 344                                         $data = $wgContLang->checkTitleEncoding( $data );
 345                                 }
 346                         }
 347                         $data = $this->normalizeUnicode( $data );
 348                         return $data;
 349                 } else {
 350                         return $default;
 351                 }
 352         }
 353
 354         /**
 355          * Fetch a scalar from the input or return $default if it's not set.
 356          * Returns a string. Arrays are discarded. Useful for
 357          * non-freeform text inputs (e.g. predefined internal text keys
 358          * selected by a drop-down menu). For freeform input, see getText().
 359          *
 360          * @param $name String
 361          * @param string $default optional default (or NULL)
 362          * @return String
 363          */
 364         public function getVal( $name, $default = null ) {
 365                 $val = $this->getGPCVal( $this->data, $name, $default );
 366                 if ( is_array( $val ) ) {
 367                         $val = $default;
 368                 }
 369                 if ( is_null( $val ) ) {
 370                         return $val;
 371                 } else {
 372                         return (string)$val;
 373                 }
 374         }
 375
 376         /**
 377          * Set an arbitrary value into our get/post data.
 378          *
 379          * @param string $key key name to use
 380          * @param $value Mixed: value to set
 381          * @return Mixed: old value if one was present, null otherwise
 382          */
 383         public function setVal( $key, $value ) {
 384                 $ret = isset( $this->data[$key] ) ? $this->data[$key] : null;
 385                 $this->data[$key] = $value;
 386                 return $ret;
 387         }
 388
 389         /**
 390          * Unset an arbitrary value from our get/post data.
 391          *
 392          * @param string $key key name to use
 393          * @return Mixed: old value if one was present, null otherwise
 394          */
 395         public function unsetVal( $key ) {
 396                 if ( !isset( $this->data[$key] ) ) {
 397                         $ret = null;
 398                 } else {
 399                         $ret = $this->data[$key];
 400                         unset( $this->data[$key] );
 401                 }
 402                 return $ret;
 403         }
 404
 405         /**
 406          * Fetch an array from the input or return $default if it's not set.
 407          * If source was scalar, will return an array with a single element.
 408          * If no source and no default, returns NULL.
 409          *
 410          * @param $name String
 411          * @param array $default optional default (or NULL)
 412          * @return Array
 413          */
 414         public function getArray( $name, $default = null ) {
 415                 $val = $this->getGPCVal( $this->data, $name, $default );
 416                 if ( is_null( $val ) ) {
 417                         return null;
 418                 } else {
 419                         return (array)$val;
 420                 }
 421         }
 422
 423         /**
 424          * Fetch an array of integers, or return $default if it's not set.
 425          * If source was scalar, will return an array with a single element.
 426          * If no source and no default, returns NULL.
 427          * If an array is returned, contents are guaranteed to be integers.
 428          *
 429          * @param $name String
 430          * @param array $default option default (or NULL)
 431          * @return Array of ints
 432          */
 433         public function getIntArray( $name, $default = null ) {
 434                 $val = $this->getArray( $name, $default );
 435                 if ( is_array( $val ) ) {
 436                         $val = array_map( 'intval', $val );
 437                 }
 438                 return $val;
 439         }
 440
 441         /**
 442          * Fetch an integer value from the input or return $default if not set.
 443          * Guaranteed to return an integer; non-numeric input will typically
 444          * return 0.
 445          *
 446          * @param $name String
 447          * @param $default Integer
 448          * @return Integer
 449          */
 450         public function getInt( $name, $default = 0 ) {
 451                 return intval( $this->getVal( $name, $default ) );
 452         }
 453
 454         /**
 455          * Fetch an integer value from the input or return null if empty.
 456          * Guaranteed to return an integer or null; non-numeric input will
 457          * typically return null.
 458          *
 459          * @param $name String
 460          * @return Integer
 461          */
 462         public function getIntOrNull( $name ) {
 463                 $val = $this->getVal( $name );
 464                 return is_numeric( $val )
 465                         ? intval( $val )
 466                         : null;
 467         }
 468
 469         /**
 470          * Fetch a boolean value from the input or return $default if not set.
 471          * Guaranteed to return true or false, with normal PHP semantics for
 472          * boolean interpretation of strings.
 473          *
 474          * @param $name String
 475          * @param $default Boolean
 476          * @return Boolean
 477          */
 478         public function getBool( $name, $default = false ) {
 479                 return (bool)$this->getVal( $name, $default );
 480         }
 481
 482         /**
 483          * Fetch a boolean value from the input or return $default if not set.
 484          * Unlike getBool, the string "false" will result in boolean false, which is
 485          * useful when interpreting information sent from JavaScript.
 486          *
 487          * @param $name String
 488          * @param $default Boolean
 489          * @return Boolean
 490          */
 491         public function getFuzzyBool( $name, $default = false ) {
 492                 return $this->getBool( $name, $default ) && strcasecmp( $this->getVal( $name ), 'false' ) !== 0;
 493         }
 494
 495         /**
 496          * Return true if the named value is set in the input, whatever that
 497          * value is (even "0"). Return false if the named value is not set.
 498          * Example use is checking for the presence of check boxes in forms.
 499          *
 500          * @param $name String
 501          * @return Boolean
 502          */
 503         public function getCheck( $name ) {
 504                 # Checkboxes and buttons are only present when clicked
 505                 # Presence connotes truth, absence false
 506                 return $this->getVal( $name, null ) !== null;
 507         }
 508
 509         /**
 510          * Fetch a text string from the given array or return $default if it's not
 511          * set. Carriage returns are stripped from the text, and with some language
 512          * modules there is an input transliteration applied. This should generally
 513          * be used for form "<textarea>" and "<input>" fields. Used for
 514          * user-supplied freeform text input (for which input transformations may
 515          * be required - e.g.  Esperanto x-coding).
 516          *
 517          * @param $name String
 518          * @param string $default optional
 519          * @return String
 520          */
 521         public function getText( $name, $default = '' ) {
 522                 global $wgContLang;
 523                 $val = $this->getVal( $name, $default );
 524                 return str_replace( "\r\n", "\n",
 525                         $wgContLang->recodeInput( $val ) );
 526         }
 527
 528         /**
 529          * Extracts the given named values into an array.
 530          * If no arguments are given, returns all input values.
 531          * No transformation is performed on the values.
 532          *
 533          * @return array
 534          */
 535         public function getValues() {
 536                 $names = func_get_args();
 537                 if ( count( $names ) == 0 ) {
 538                         $names = array_keys( $this->data );
 539                 }
 540
 541                 $retVal = array();
 542                 foreach ( $names as $name ) {
 543                         $value = $this->getGPCVal( $this->data, $name, null );
 544                         if ( !is_null( $value ) ) {
 545                                 $retVal[$name] = $value;
 546                         }
 547                 }
 548                 return $retVal;
 549         }
 550
 551         /**
 552          * Returns the names of all input values excluding those in $exclude.
 553          *
 554          * @param $exclude Array
 555          * @return array
 556          */
 557         public function getValueNames( $exclude = array() ) {
 558                 return array_diff( array_keys( $this->getValues() ), $exclude );
 559         }
 560
 561         /**
 562          * Get the values passed in the query string.
 563          * No transformation is performed on the values.
 564          *
 565          * @return Array
 566          */
 567         public function getQueryValues() {
 568                 return $_GET;
 569         }
 570
 571         /**
 572          * Return the contents of the Query with no decoding. Use when you need to
 573          * know exactly what was sent, e.g. for an OAuth signature over the elements.
 574          *
 575          * @return String
 576          */
 577         public function getRawQueryString() {
 578                 return $_SERVER['QUERY_STRING'];
 579         }
 580
 581         /**
 582          * Return the contents of the POST with no decoding. Use when you need to
 583          * know exactly what was sent, e.g. for an OAuth signature over the elements.
 584          *
 585          * @return String
 586          */
 587         public function getRawPostString() {
 588                 if ( !$this->wasPosted() ) {
 589                         return '';
 590                 }
 591                 return $this->getRawInput();
 592         }
 593
 594         /**
 595          * Return the raw request body, with no processing. Cached since some methods
 596          * disallow reading the stream more than once. As stated in the php docs, this
 597          * does not work with enctype="multipart/form-data".
 598          *
 599          * @return String
 600          */
 601         public function getRawInput() {
 602                 static $input = false;
 603                 if ( $input === false ) {
 604                         $input = file_get_contents( 'php://input' );
 605                 }
 606                 return $input;
 607         }
 608
 609         /**
 610          * Get the HTTP method used for this request.
 611          *
 612          * @return String
 613          */
 614         public function getMethod() {
 615                 return isset( $_SERVER['REQUEST_METHOD'] ) ? $_SERVER['REQUEST_METHOD'] : 'GET';
 616         }
 617
 618         /**
 619          * Returns true if the present request was reached by a POST operation,
 620          * false otherwise (GET, HEAD, or command-line).
 621          *
 622          * Note that values retrieved by the object may come from the
 623          * GET URL etc even on a POST request.
 624          *
 625          * @return Boolean
 626          */
 627         public function wasPosted() {
 628                 return $this->getMethod() == 'POST';
 629         }
 630
 631         /**
 632          * Returns true if there is a session cookie set.
 633          * This does not necessarily mean that the user is logged in!
 634          *
 635          * If you want to check for an open session, use session_id()
 636          * instead; that will also tell you if the session was opened
 637          * during the current request (in which case the cookie will
 638          * be sent back to the client at the end of the script run).
 639          *
 640          * @return Boolean
 641          */
 642         public function checkSessionCookie() {
 643                 return isset( $_COOKIE[session_name()] );
 644         }
 645
 646         /**
 647          * Get a cookie from the $_COOKIE jar
 648          *
 649          * @param string $key the name of the cookie
 650          * @param string $prefix a prefix to use for the cookie name, if not $wgCookiePrefix
 651          * @param $default Mixed: what to return if the value isn't found
 652          * @return Mixed: cookie value or $default if the cookie not set
 653          */
 654         public function getCookie( $key, $prefix = null, $default = null ) {
 655                 if ( $prefix === null ) {
 656                         global $wgCookiePrefix;
 657                         $prefix = $wgCookiePrefix;
 658                 }
 659                 return $this->getGPCVal( $_COOKIE, $prefix . $key, $default );
 660         }
 661
 662         /**
 663          * Return the path and query string portion of the request URI.
 664          * This will be suitable for use as a relative link in HTML output.
 665          *
 666          * @throws MWException
 667          * @return String
 668          */
 669         public function getRequestURL() {
 670                 if ( isset( $_SERVER['REQUEST_URI'] ) && strlen( $_SERVER['REQUEST_URI'] ) ) {
 671                         $base = $_SERVER['REQUEST_URI'];
 672                 } elseif ( isset( $_SERVER['HTTP_X_ORIGINAL_URL'] ) && strlen( $_SERVER['HTTP_X_ORIGINAL_URL'] ) ) {
 673                         // Probably IIS; doesn't set REQUEST_URI
 674                         $base = $_SERVER['HTTP_X_ORIGINAL_URL'];
 675                 } elseif ( isset( $_SERVER['SCRIPT_NAME'] ) ) {
 676                         $base = $_SERVER['SCRIPT_NAME'];
 677                         if ( isset( $_SERVER['QUERY_STRING'] ) && $_SERVER['QUERY_STRING'] != '' ) {
 678                                 $base .= '?' . $_SERVER['QUERY_STRING'];
 679                         }
 680                 } else {
 681                         // This shouldn't happen!
 682                         throw new MWException( "Web server doesn't provide either " .
 683                                 "REQUEST_URI, HTTP_X_ORIGINAL_URL or SCRIPT_NAME. Report details " .
 684                                 "of your web server configuration to http://bugzilla.wikimedia.org/" );
 685                 }
 686                 // User-agents should not send a fragment with the URI, but
 687                 // if they do, and the web server passes it on to us, we
 688                 // need to strip it or we get false-positive redirect loops
 689                 // or weird output URLs
 690                 $hash = strpos( $base, '#' );
 691                 if ( $hash !== false ) {
 692                         $base = substr( $base, 0, $hash );
 693                 }
 694
 695                 if ( $base[0] == '/' ) {
 696                         // More than one slash will look like it is protocol relative
 697                         return preg_replace( '!^/+!', '/', $base );
 698                 } else {
 699                         // We may get paths with a host prepended; strip it.
 700                         return preg_replace( '!^[^:]+://[^/]+/+!', '/', $base );
 701                 }
 702         }
 703
 704         /**
 705          * Return the request URI with the canonical service and hostname, path,
 706          * and query string. This will be suitable for use as an absolute link
 707          * in HTML or other output.
 708          *
 709          * If $wgServer is protocol-relative, this will return a fully
 710          * qualified URL with the protocol that was used for this request.
 711          *
 712          * @return String
 713          */
 714         public function getFullRequestURL() {
 715                 return wfExpandUrl( $this->getRequestURL(), PROTO_CURRENT );
 716         }
 717
 718         /**
 719          * Take an arbitrary query and rewrite the present URL to include it
 720          * @param string $query query string fragment; do not include initial '?'
 721          *
 722          * @return String
 723          */
 724         public function appendQuery( $query ) {
 725                 return $this->appendQueryArray( wfCgiToArray( $query ) );
 726         }
 727
 728         /**
 729          * HTML-safe version of appendQuery().
 730          * @deprecated: Deprecated in 1.20, warnings in 1.21, remove in 1.22.
 731          *
 732          * @param string $query query string fragment; do not include initial '?'
 733          * @return String
 734          */
 735         public function escapeAppendQuery( $query ) {
 736                 return htmlspecialchars( $this->appendQuery( $query ) );
 737         }
 738
 739         /**
 740          * @param $key
 741          * @param $value
 742          * @param $onlyquery bool
 743          * @return String
 744          */
 745         public function appendQueryValue( $key, $value, $onlyquery = false ) {
 746                 return $this->appendQueryArray( array( $key => $value ), $onlyquery );
 747         }
 748
 749         /**
 750          * Appends or replaces value of query variables.
 751          *
 752          * @param array $array of values to replace/add to query
 753          * @param bool $onlyquery whether to only return the query string and not
 754          *                   the complete URL
 755          * @return String
 756          */
 757         public function appendQueryArray( $array, $onlyquery = false ) {
 758                 global $wgTitle;
 759                 $newquery = $this->getQueryValues();
 760                 unset( $newquery['title'] );
 761                 $newquery = array_merge( $newquery, $array );
 762                 $query = wfArrayToCgi( $newquery );
 763                 return $onlyquery ? $query : $wgTitle->getLocalURL( $query );
 764         }
 765
 766         /**
 767          * Check for limit and offset parameters on the input, and return sensible
 768          * defaults if not given. The limit must be positive and is capped at 5000.
 769          * Offset must be positive but is not capped.
 770          *
 771          * @param $deflimit Integer: limit to use if no input and the user hasn't set the option.
 772          * @param string $optionname to specify an option other than rclimit to pull from.
 773          * @return array first element is limit, second is offset
 774          */
 775         public function getLimitOffset( $deflimit = 50, $optionname = 'rclimit' ) {
 776                 global $wgUser;
 777
 778                 $limit = $this->getInt( 'limit', 0 );
 779                 if ( $limit < 0 ) {
 780                         $limit = 0;
 781                 }
 782                 if ( ( $limit == 0 ) && ( $optionname != '' ) ) {
 783                         $limit = $wgUser->getIntOption( $optionname );
 784                 }
 785                 if ( $limit <= 0 ) {
 786                         $limit = $deflimit;
 787                 }
 788                 if ( $limit > 5000 ) {
 789                         $limit = 5000; # We have *some* limits...
 790                 }
 791
 792                 $offset = $this->getInt( 'offset', 0 );
 793                 if ( $offset < 0 ) {
 794                         $offset = 0;
 795                 }
 796
 797                 return array( $limit, $offset );
 798         }
 799
 800         /**
 801          * Return the path to the temporary file where PHP has stored the upload.
 802          *
 803          * @param $key String:
 804          * @return string or NULL if no such file.
 805          */
 806         public function getFileTempname( $key ) {
 807                 $file = new WebRequestUpload( $this, $key );
 808                 return $file->getTempName();
 809         }
 810
 811         /**
 812          * Return the size of the upload, or 0.
 813          *
 814          * @deprecated since 1.17
 815          * @param $key String:
 816          * @return integer
 817          */
 818         public function getFileSize( $key ) {
 819                 wfDeprecated( __METHOD__, '1.17' );
 820                 $file = new WebRequestUpload( $this, $key );
 821                 return $file->getSize();
 822         }
 823
 824         /**
 825          * Return the upload error or 0
 826          *
 827          * @param $key String:
 828          * @return integer
 829          */
 830         public function getUploadError( $key ) {
 831                 $file = new WebRequestUpload( $this, $key );
 832                 return $file->getError();
 833         }
 834
 835         /**
 836          * Return the original filename of the uploaded file, as reported by
 837          * the submitting user agent. HTML-style character entities are
 838          * interpreted and normalized to Unicode normalization form C, in part
 839          * to deal with weird input from Safari with non-ASCII filenames.
 840          *
 841          * Other than this the name is not verified for being a safe filename.
 842          *
 843          * @param $key String:
 844          * @return string or NULL if no such file.
 845          */
 846         public function getFileName( $key ) {
 847                 $file = new WebRequestUpload( $this, $key );
 848                 return $file->getName();
 849         }
 850
 851         /**
 852          * Return a WebRequestUpload object corresponding to the key
 853          *
 854          * @param $key string
 855          * @return WebRequestUpload
 856          */
 857         public function getUpload( $key ) {
 858                 return new WebRequestUpload( $this, $key );
 859         }
 860
 861         /**
 862          * Return a handle to WebResponse style object, for setting cookies,
 863          * headers and other stuff, for Request being worked on.
 864          *
 865          * @return WebResponse
 866          */
 867         public function response() {
 868                 /* Lazy initialization of response object for this request */
 869                 if ( !is_object( $this->response ) ) {
 870                         $class = ( $this instanceof FauxRequest ) ? 'FauxResponse' : 'WebResponse';
 871                         $this->response = new $class();
 872                 }
 873                 return $this->response;
 874         }
 875
 876         /**
 877          * Initialise the header list
 878          */
 879         private function initHeaders() {
 880                 if ( count( $this->headers ) ) {
 881                         return;
 882                 }
 883
 884                 if ( function_exists( 'apache_request_headers' ) ) {
 885                         foreach ( apache_request_headers() as $tempName => $tempValue ) {
 886                                 $this->headers[strtoupper( $tempName )] = $tempValue;
 887                         }
 888                 } else {
 889                         foreach ( $_SERVER as $name => $value ) {
 890                                 if ( substr( $name, 0, 5 ) === 'HTTP_' ) {
 891                                         $name = str_replace( '_', '-', substr( $name, 5 ) );
 892                                         $this->headers[$name] = $value;
 893                                 } elseif ( $name === 'CONTENT_LENGTH' ) {
 894                                         $this->headers['CONTENT-LENGTH'] = $value;
 895                                 }
 896                         }
 897                 }
 898         }
 899
 900         /**
 901          * Get an array containing all request headers
 902          *
 903          * @return Array mapping header name to its value
 904          */
 905         public function getAllHeaders() {
 906                 $this->initHeaders();
 907                 return $this->headers;
 908         }
 909
 910         /**
 911          * Get a request header, or false if it isn't set
 912          * @param string $name case-insensitive header name
 913          *
 914          * @return string|bool False on failure
 915          */
 916         public function getHeader( $name ) {
 917                 $this->initHeaders();
 918                 $name = strtoupper( $name );
 919                 if ( isset( $this->headers[$name] ) ) {
 920                         return $this->headers[$name];
 921                 } else {
 922                         return false;
 923                 }
 924         }
 925
 926         /**
 927          * Get data from $_SESSION
 928          *
 929          * @param string $key name of key in $_SESSION
 930          * @return Mixed
 931          */
 932         public function getSessionData( $key ) {
 933                 if ( !isset( $_SESSION[$key] ) ) {
 934                         return null;
 935                 }
 936                 return $_SESSION[$key];
 937         }
 938
 939         /**
 940          * Set session data
 941          *
 942          * @param string $key name of key in $_SESSION
 943          * @param $data Mixed
 944          */
 945         public function setSessionData( $key, $data ) {
 946                 $_SESSION[$key] = $data;
 947         }
 948
 949         /**
 950          * Check if Internet Explorer will detect an incorrect cache extension in
 951          * PATH_INFO or QUERY_STRING. If the request can't be allowed, show an error
 952          * message or redirect to a safer URL. Returns true if the URL is OK, and
 953          * false if an error message has been shown and the request should be aborted.
 954          *
 955          * @param $extWhitelist array
 956          * @throws HttpError
 957          * @return bool
 958          */
 959         public function checkUrlExtension( $extWhitelist = array() ) {
 960                 global $wgScriptExtension;
 961                 $extWhitelist[] = ltrim( $wgScriptExtension, '.' );
 962                 if ( IEUrlExtension::areServerVarsBad( $_SERVER, $extWhitelist ) ) {
 963                         if ( !$this->wasPosted() ) {
 964                                 $newUrl = IEUrlExtension::fixUrlForIE6(
 965                                         $this->getFullRequestURL(), $extWhitelist );
 966                                 if ( $newUrl !== false ) {
 967                                         $this->doSecurityRedirect( $newUrl );
 968                                         return false;
 969                                 }
 970                         }
 971                         throw new HttpError( 403,
 972                                 'Invalid file extension found in the path info or query string.' );
 973                 }
 974                 return true;
 975         }
 976
 977         /**
 978          * Attempt to redirect to a URL with a QUERY_STRING that's not dangerous in
 979          * IE 6. Returns true if it was successful, false otherwise.
 980          *
 981          * @param $url string
 982          * @return bool
 983          */
 984         protected function doSecurityRedirect( $url ) {
 985                 header( 'Location: ' . $url );
 986                 header( 'Content-Type: text/html' );
 987                 $encUrl = htmlspecialchars( $url );
 988                 echo <<<HTML
 989 <html>
 990 <head>
 991 <title>Security redirect</title>
 992 </head>
 993 <body>
 994 <h1>Security redirect</h1>
 995 <p>
 996 We can't serve non-HTML content from the URL you have requested, because
 997 Internet Explorer would interpret it as an incorrect and potentially dangerous
 998 content type.</p>
 999 <p>Instead, please use <a href="$encUrl">this URL</a>, which is the same as the URL you have requested, except that
1000 "&amp;*" is appended. This prevents Internet Explorer from seeing a bogus file
1001 extension.
1002 </p>
1003 </body>
1004 </html>
1005 HTML;
1006                 echo "\n";
1007                 return true;
1008         }
1009
1010         /**
1011          * Returns true if the PATH_INFO ends with an extension other than a script
1012          * extension. This could confuse IE for scripts that send arbitrary data which
1013          * is not HTML but may be detected as such.
1014          *
1015          * Various past attempts to use the URL to make this check have generally
1016          * run up against the fact that CGI does not provide a standard method to
1017          * determine the URL. PATH_INFO may be mangled (e.g. if cgi.fix_pathinfo=0),
1018          * but only by prefixing it with the script name and maybe some other stuff,
1019          * the extension is not mangled. So this should be a reasonably portable
1020          * way to perform this security check.
1021          *
1022          * Also checks for anything that looks like a file extension at the end of
1023          * QUERY_STRING, since IE 6 and earlier will use this to get the file type
1024          * if there was no dot before the question mark (bug 28235).
1025          *
1026          * @deprecated Use checkUrlExtension().
1027          *
1028          * @param $extWhitelist array
1029          *
1030          * @return bool
1031          */
1032         public function isPathInfoBad( $extWhitelist = array() ) {
1033                 wfDeprecated( __METHOD__, '1.17' );
1034                 global $wgScriptExtension;
1035                 $extWhitelist[] = ltrim( $wgScriptExtension, '.' );
1036                 return IEUrlExtension::areServerVarsBad( $_SERVER, $extWhitelist );
1037         }
1038
1039         /**
1040          * Parse the Accept-Language header sent by the client into an array
1041          * @return array array( languageCode => q-value ) sorted by q-value in descending order then
1042          *                                                appearing time in the header in ascending order.
1043          * May contain the "language" '*', which applies to languages other than those explicitly listed.
1044          * This is aligned with rfc2616 section 14.4
1045          * Preference for earlier languages appears in rfc3282 as an extension to HTTP/1.1.
1046          */
1047         public function getAcceptLang() {
1048                 // Modified version of code found at http://www.thefutureoftheweb.com/blog/use-accept-language-header
1049                 $acceptLang = $this->getHeader( 'Accept-Language' );
1050                 if ( !$acceptLang ) {
1051                         return array();
1052                 }
1053
1054                 // Return the language codes in lower case
1055                 $acceptLang = strtolower( $acceptLang );
1056
1057                 // Break up string into pieces (languages and q factors)
1058                 $lang_parse = null;
1059                 preg_match_all( '/([a-z]{1,8}(-[a-z]{1,8})*|\*)\s*(;\s*q\s*=\s*(1(\.0{0,3})?|0(\.[0-9]{0,3})?)?)?/',
1060                         $acceptLang, $lang_parse );
1061
1062                 if ( !count( $lang_parse[1] ) ) {
1063                         return array();
1064                 }
1065
1066                 $langcodes = $lang_parse[1];
1067                 $qvalues = $lang_parse[4];
1068                 $indices = range( 0, count( $lang_parse[1] ) - 1 );
1069
1070                 // Set default q factor to 1
1071                 foreach ( $indices as $index ) {
1072                         if ( $qvalues[$index] === '' ) {
1073                                 $qvalues[$index] = 1;
1074                         } elseif ( $qvalues[$index] == 0 ) {
1075                                 unset( $langcodes[$index], $qvalues[$index], $indices[$index] );
1076                         }
1077                 }
1078
1079                 // Sort list. First by $qvalues, then by order. Reorder $langcodes the same way
1080                 array_multisort( $qvalues, SORT_DESC, SORT_NUMERIC, $indices, $langcodes );
1081
1082                 // Create a list like "en" => 0.8
1083                 $langs = array_combine( $langcodes, $qvalues );
1084
1085                 return $langs;
1086         }
1087
1088         /**
1089          * Fetch the raw IP from the request
1090          *
1091          * @since 1.19
1092          *
1093          * @throws MWException
1094          * @return String
1095          */
1096         protected function getRawIP() {
1097                 if ( !isset( $_SERVER['REMOTE_ADDR'] ) ) {
1098                         return null;
1099                 }
1100
1101                 if ( is_array( $_SERVER['REMOTE_ADDR'] ) || strpos( $_SERVER['REMOTE_ADDR'], ',' ) !== false ) {
1102                         throw new MWException( __METHOD__ . " : Could not determine the remote IP address due to multiple values." );
1103                 } else {
1104                         $ipchain = $_SERVER['REMOTE_ADDR'];
1105                 }
1106
1107                 return IP::canonicalize( $ipchain );
1108         }
1109
1110         /**
1111          * Work out the IP address based on various globals
1112          * For trusted proxies, use the XFF client IP (first of the chain)
1113          *
1114          * @since 1.19
1115          *
1116          * @throws MWException
1117          * @return string
1118          */
1119         public function getIP() {
1120                 global $wgUsePrivateIPs;
1121
1122                 # Return cached result
1123                 if ( $this->ip !== null ) {
1124                         return $this->ip;
1125                 }
1126
1127                 # collect the originating ips
1128                 $ip = $this->getRawIP();
1129
1130                 # Append XFF
1131                 $forwardedFor = $this->getHeader( 'X-Forwarded-For' );
1132                 if ( $forwardedFor !== false ) {
1133                         $ipchain = array_map( 'trim', explode( ',', $forwardedFor ) );
1134                         $ipchain = array_reverse( $ipchain );
1135                         if ( $ip ) {
1136                                 array_unshift( $ipchain, $ip );
1137                         }
1138
1139                         # Step through XFF list and find the last address in the list which is a
1140                         # trusted server. Set $ip to the IP address given by that trusted server,
1141                         # unless the address is not sensible (e.g. private). However, prefer private
1142                         # IP addresses over proxy servers controlled by this site (more sensible).
1143                         foreach ( $ipchain as $i => $curIP ) {
1144                                 $curIP = IP::sanitizeIP( IP::canonicalize( $curIP ) );
1145                                 if ( wfIsTrustedProxy( $curIP ) && isset( $ipchain[$i + 1] ) ) {
1146                                         if ( wfIsConfiguredProxy( $curIP ) || // bug 48919
1147                                                 ( IP::isPublic( $ipchain[$i + 1] ) || $wgUsePrivateIPs )
1148                                         ) {
1149                                                 $ip = IP::canonicalize( $ipchain[$i + 1] );
1150                                                 continue;
1151                                         }
1152                                 }
1153                                 break;
1154                         }
1155                 }
1156
1157                 # Allow extensions to improve our guess
1158                 wfRunHooks( 'GetIP', array( &$ip ) );
1159
1160                 if ( !$ip ) {
1161                         throw new MWException( "Unable to determine IP" );
1162                 }
1163
1164                 wfDebug( "IP: $ip\n" );
1165                 $this->ip = $ip;
1166                 return $ip;
1167         }
1168
1169         /**
1170          * @param string $ip
1171          * @return void
1172          * @since 1.21
1173          */
1174         public function setIP( $ip ) {
1175                 $this->ip = $ip;
1176         }
1177 }
1178
1179 /**
1180  * Object to access the $_FILES array
1181  */
1182 class WebRequestUpload {
1183         protected $request;
1184         protected $doesExist;
1185         protected $fileInfo;
1186
1187         /**
1188          * Constructor. Should only be called by WebRequest
1189          *
1190          * @param $request WebRequest The associated request
1191          * @param string $key Key in $_FILES array (name of form field)
1192          */
1193         public function __construct( $request, $key ) {
1194                 $this->request = $request;
1195                 $this->doesExist = isset( $_FILES[$key] );
1196                 if ( $this->doesExist ) {
1197                         $this->fileInfo = $_FILES[$key];
1198                 }
1199         }
1200
1201         /**
1202          * Return whether a file with this name was uploaded.
1203          *
1204          * @return bool
1205          */
1206         public function exists() {
1207                 return $this->doesExist;
1208         }
1209
1210         /**
1211          * Return the original filename of the uploaded file
1212          *
1213          * @return mixed Filename or null if non-existent
1214          */
1215         public function getName() {
1216                 if ( !$this->exists() ) {
1217                         return null;
1218                 }
1219
1220                 global $wgContLang;
1221                 $name = $this->fileInfo['name'];
1222
1223                 # Safari sends filenames in HTML-encoded Unicode form D...
1224                 # Horrid and evil! Let's try to make some kind of sense of it.
1225                 $name = Sanitizer::decodeCharReferences( $name );
1226                 $name = $wgContLang->normalize( $name );
1227                 wfDebug( __METHOD__ . ": {$this->fileInfo['name']} normalized to '$name'\n" );
1228                 return $name;
1229         }
1230
1231         /**
1232          * Return the file size of the uploaded file
1233          *
1234          * @return int File size or zero if non-existent
1235          */
1236         public function getSize() {
1237                 if ( !$this->exists() ) {
1238                         return 0;
1239                 }
1240
1241                 return $this->fileInfo['size'];
1242         }
1243
1244         /**
1245          * Return the path to the temporary file
1246          *
1247          * @return mixed Path or null if non-existent
1248          */
1249         public function getTempName() {
1250                 if ( !$this->exists() ) {
1251                         return null;
1252                 }
1253
1254                 return $this->fileInfo['tmp_name'];
1255         }
1256
1257         /**
1258          * Return the upload error. See link for explanation
1259          * http://www.php.net/manual/en/features.file-upload.errors.php
1260          *
1261          * @return int One of the UPLOAD_ constants, 0 if non-existent
1262          */
1263         public function getError() {
1264                 if ( !$this->exists() ) {
1265                         return 0; # UPLOAD_ERR_OK
1266                 }
1267
1268                 return $this->fileInfo['error'];
1269         }
1270
1271         /**
1272          * Returns whether this upload failed because of overflow of a maximum set
1273          * in php.ini
1274          *
1275          * @return bool
1276          */
1277         public function isIniSizeOverflow() {
1278                 if ( $this->getError() == UPLOAD_ERR_INI_SIZE ) {
1279                         # PHP indicated that upload_max_filesize is exceeded
1280                         return true;
1281                 }
1282
1283                 $contentLength = $this->request->getHeader( 'CONTENT_LENGTH' );
1284                 if ( $contentLength > wfShorthandToInteger( ini_get( 'post_max_size' ) ) ) {
1285                         # post_max_size is exceeded
1286                         return true;
1287                 }
1288
1289                 return false;
1290         }
1291 }
1292
1293 /**
1294  * WebRequest clone which takes values from a provided array.
1295  *
1296  * @ingroup HTTP
1297  */
1298 class FauxRequest extends WebRequest {
1299         private $wasPosted = false;
1300         private $session = array();
1301
1302         /**
1303          * @param array $data of *non*-urlencoded key => value pairs, the
1304          *   fake GET/POST values
1305          * @param bool $wasPosted whether to treat the data as POST
1306          * @param $session Mixed: session array or null
1307          * @throws MWException
1308          */
1309         public function __construct( $data = array(), $wasPosted = false, $session = null ) {
1310                 if ( is_array( $data ) ) {
1311                         $this->data = $data;
1312                 } else {
1313                         throw new MWException( "FauxRequest() got bogus data" );
1314                 }
1315                 $this->wasPosted = $wasPosted;
1316                 if ( $session ) {
1317                         $this->session = $session;
1318                 }
1319         }
1320
1321         /**
1322          * @param $method string
1323          * @throws MWException
1324          */
1325         private function notImplemented( $method ) {
1326                 throw new MWException( "{$method}() not implemented" );
1327         }
1328
1329         /**
1330          * @param $name string
1331          * @param $default string
1332          * @return string
1333          */
1334         public function getText( $name, $default = '' ) {
1335                 # Override; don't recode since we're using internal data
1336                 return (string)$this->getVal( $name, $default );
1337         }
1338
1339         /**
1340          * @return Array
1341          */
1342         public function getValues() {
1343                 return $this->data;
1344         }
1345
1346         /**
1347          * @return array
1348          */
1349         public function getQueryValues() {
1350                 if ( $this->wasPosted ) {
1351                         return array();
1352                 } else {
1353                         return $this->data;
1354                 }
1355         }
1356
1357         public function getMethod() {
1358                 return $this->wasPosted ? 'POST' : 'GET';
1359         }
1360
1361         /**
1362          * @return bool
1363          */
1364         public function wasPosted() {
1365                 return $this->wasPosted;
1366         }
1367
1368         public function getCookie( $key, $prefix = null, $default = null ) {
1369                 return $default;
1370         }
1371
1372         public function checkSessionCookie() {
1373                 return false;
1374         }
1375
1376         public function getRequestURL() {
1377                 $this->notImplemented( __METHOD__ );
1378         }
1379
1380         /**
1381          * @param string $name The name of the header to get (case insensitive).
1382          * @return bool|string
1383          */
1384         public function getHeader( $name ) {
1385                 $name = strtoupper( $name );
1386                 return isset( $this->headers[$name] ) ? $this->headers[$name] : false;
1387         }
1388
1389         /**
1390          * @param $name string
1391          * @param $val string
1392          */
1393         public function setHeader( $name, $val ) {
1394                 $name = strtoupper( $name );
1395                 $this->headers[$name] = $val;
1396         }
1397
1398         /**
1399          * @param $key
1400          * @return mixed
1401          */
1402         public function getSessionData( $key ) {
1403                 if ( isset( $this->session[$key] ) ) {
1404                         return $this->session[$key];
1405                 }
1406                 return null;
1407         }
1408
1409         /**
1410          * @param $key
1411          * @param $data
1412          */
1413         public function setSessionData( $key, $data ) {
1414                 $this->session[$key] = $data;
1415         }
1416
1417         /**
1418          * @return array|Mixed|null
1419          */
1420         public function getSessionArray() {
1421                 return $this->session;
1422         }
1423
1424         /**
1425          * @param array $extWhitelist
1426          * @return bool
1427          */
1428         public function isPathInfoBad( $extWhitelist = array() ) {
1429                 return false;
1430         }
1431
1432         /**
1433          * FauxRequests shouldn't depend on raw request data (but that could be implemented here)
1434          * @return String
1435          */
1436         public function getRawQueryString() {
1437                 return '';
1438         }
1439
1440         /**
1441          * FauxRequests shouldn't depend on raw request data (but that could be implemented here)
1442          * @return String
1443          */
1444         public function getRawPostString() {
1445                 return '';
1446         }
1447
1448         /**
1449          * FauxRequests shouldn't depend on raw request data (but that could be implemented here)
1450          * @return String
1451          */
1452         public function getRawInput() {
1453                 return '';
1454         }
1455
1456         /**
1457          * @param array $extWhitelist
1458          * @return bool
1459          */
1460         public function checkUrlExtension( $extWhitelist = array() ) {
1461                 return true;
1462         }
1463
1464         /**
1465          * @return string
1466          */
1467         protected function getRawIP() {
1468                 return '127.0.0.1';
1469         }
1470 }
1471
1472 /**
1473  * Similar to FauxRequest, but only fakes URL parameters and method
1474  * (POST or GET) and use the base request for the remaining stuff
1475  * (cookies, session and headers).
1476  *
1477  * @ingroup HTTP
1478  * @since 1.19
1479  */
1480 class DerivativeRequest extends FauxRequest {
1481         private $base;
1482
1483         public function __construct( WebRequest $base, $data, $wasPosted = false ) {
1484                 $this->base = $base;
1485                 parent::__construct( $data, $wasPosted );
1486         }
1487
1488         public function getCookie( $key, $prefix = null, $default = null ) {
1489                 return $this->base->getCookie( $key, $prefix, $default );
1490         }
1491
1492         public function checkSessionCookie() {
1493                 return $this->base->checkSessionCookie();
1494         }
1495
1496         public function getHeader( $name ) {
1497                 return $this->base->getHeader( $name );
1498         }
1499
1500         public function getAllHeaders() {
1501                 return $this->base->getAllHeaders();
1502         }
1503
1504         public function getSessionData( $key ) {
1505                 return $this->base->getSessionData( $key );
1506         }
1507
1508         public function setSessionData( $key, $data ) {
1509                 $this->base->setSessionData( $key, $data );
1510         }
1511
1512         public function getAcceptLang() {
1513                 return $this->base->getAcceptLang();
1514         }
1515
1516         public function getIP() {
1517                 return $this->base->getIP();
1518         }
1519 }