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                         taint( $default );
 351                         return $default;
 352                 }
 353         }
 354
 355         /**
 356          * Fetch a scalar from the input or return $default if it's not set.
 357          * Returns a string. Arrays are discarded. Useful for
 358          * non-freeform text inputs (e.g. predefined internal text keys
 359          * selected by a drop-down menu). For freeform input, see getText().
 360          *
 361          * @param $name String
 362          * @param string $default optional default (or NULL)
 363          * @return String
 364          */
 365         public function getVal( $name, $default = null ) {
 366                 $val = $this->getGPCVal( $this->data, $name, $default );
 367                 if ( is_array( $val ) ) {
 368                         $val = $default;
 369                 }
 370                 if ( is_null( $val ) ) {
 371                         return $val;
 372                 } else {
 373                         return (string)$val;
 374                 }
 375         }
 376
 377         /**
 378          * Set an arbitrary value into our get/post data.
 379          *
 380          * @param string $key key name to use
 381          * @param $value Mixed: value to set
 382          * @return Mixed: old value if one was present, null otherwise
 383          */
 384         public function setVal( $key, $value ) {
 385                 $ret = isset( $this->data[$key] ) ? $this->data[$key] : null;
 386                 $this->data[$key] = $value;
 387                 return $ret;
 388         }
 389
 390         /**
 391          * Unset an arbitrary value from our get/post data.
 392          *
 393          * @param string $key key name to use
 394          * @return Mixed: old value if one was present, null otherwise
 395          */
 396         public function unsetVal( $key ) {
 397                 if ( !isset( $this->data[$key] ) ) {
 398                         $ret = null;
 399                 } else {
 400                         $ret = $this->data[$key];
 401                         unset( $this->data[$key] );
 402                 }
 403                 return $ret;
 404         }
 405
 406         /**
 407          * Fetch an array from the input or return $default if it's not set.
 408          * If source was scalar, will return an array with a single element.
 409          * If no source and no default, returns NULL.
 410          *
 411          * @param $name String
 412          * @param array $default optional default (or NULL)
 413          * @return Array
 414          */
 415         public function getArray( $name, $default = null ) {
 416                 $val = $this->getGPCVal( $this->data, $name, $default );
 417                 if ( is_null( $val ) ) {
 418                         return null;
 419                 } else {
 420                         return (array)$val;
 421                 }
 422         }
 423
 424         /**
 425          * Fetch an array of integers, or return $default if it's not set.
 426          * If source was scalar, will return an array with a single element.
 427          * If no source and no default, returns NULL.
 428          * If an array is returned, contents are guaranteed to be integers.
 429          *
 430          * @param $name String
 431          * @param array $default option default (or NULL)
 432          * @return Array of ints
 433          */
 434         public function getIntArray( $name, $default = null ) {
 435                 $val = $this->getArray( $name, $default );
 436                 if ( is_array( $val ) ) {
 437                         $val = array_map( 'intval', $val );
 438                 }
 439                 return $val;
 440         }
 441
 442         /**
 443          * Fetch an integer value from the input or return $default if not set.
 444          * Guaranteed to return an integer; non-numeric input will typically
 445          * return 0.
 446          *
 447          * @param $name String
 448          * @param $default Integer
 449          * @return Integer
 450          */
 451         public function getInt( $name, $default = 0 ) {
 452                 return intval( $this->getVal( $name, $default ) );
 453         }
 454
 455         /**
 456          * Fetch an integer value from the input or return null if empty.
 457          * Guaranteed to return an integer or null; non-numeric input will
 458          * typically return null.
 459          *
 460          * @param $name String
 461          * @return Integer
 462          */
 463         public function getIntOrNull( $name ) {
 464                 $val = $this->getVal( $name );
 465                 return is_numeric( $val )
 466                         ? intval( $val )
 467                         : null;
 468         }
 469
 470         /**
 471          * Fetch a boolean value from the input or return $default if not set.
 472          * Guaranteed to return true or false, with normal PHP semantics for
 473          * boolean interpretation of strings.
 474          *
 475          * @param $name String
 476          * @param $default Boolean
 477          * @return Boolean
 478          */
 479         public function getBool( $name, $default = false ) {
 480                 return (bool)$this->getVal( $name, $default );
 481         }
 482
 483         /**
 484          * Fetch a boolean value from the input or return $default if not set.
 485          * Unlike getBool, the string "false" will result in boolean false, which is
 486          * useful when interpreting information sent from JavaScript.
 487          *
 488          * @param $name String
 489          * @param $default Boolean
 490          * @return Boolean
 491          */
 492         public function getFuzzyBool( $name, $default = false ) {
 493                 return $this->getBool( $name, $default ) && strcasecmp( $this->getVal( $name ), 'false' ) !== 0;
 494         }
 495
 496         /**
 497          * Return true if the named value is set in the input, whatever that
 498          * value is (even "0"). Return false if the named value is not set.
 499          * Example use is checking for the presence of check boxes in forms.
 500          *
 501          * @param $name String
 502          * @return Boolean
 503          */
 504         public function getCheck( $name ) {
 505                 # Checkboxes and buttons are only present when clicked
 506                 # Presence connotes truth, absence false
 507                 return $this->getVal( $name, null ) !== null;
 508         }
 509
 510         /**
 511          * Fetch a text string from the given array or return $default if it's not
 512          * set. Carriage returns are stripped from the text, and with some language
 513          * modules there is an input transliteration applied. This should generally
 514          * be used for form "<textarea>" and "<input>" fields. Used for
 515          * user-supplied freeform text input (for which input transformations may
 516          * be required - e.g.  Esperanto x-coding).
 517          *
 518          * @param $name String
 519          * @param string $default optional
 520          * @return String
 521          */
 522         public function getText( $name, $default = '' ) {
 523                 global $wgContLang;
 524                 $val = $this->getVal( $name, $default );
 525                 return str_replace( "\r\n", "\n",
 526                         $wgContLang->recodeInput( $val ) );
 527         }
 528
 529         /**
 530          * Extracts the given named values into an array.
 531          * If no arguments are given, returns all input values.
 532          * No transformation is performed on the values.
 533          *
 534          * @return array
 535          */
 536         public function getValues() {
 537                 $names = func_get_args();
 538                 if ( count( $names ) == 0 ) {
 539                         $names = array_keys( $this->data );
 540                 }
 541
 542                 $retVal = array();
 543                 foreach ( $names as $name ) {
 544                         $value = $this->getGPCVal( $this->data, $name, null );
 545                         if ( !is_null( $value ) ) {
 546                                 $retVal[$name] = $value;
 547                         }
 548                 }
 549                 return $retVal;
 550         }
 551
 552         /**
 553          * Returns the names of all input values excluding those in $exclude.
 554          *
 555          * @param $exclude Array
 556          * @return array
 557          */
 558         public function getValueNames( $exclude = array() ) {
 559                 return array_diff( array_keys( $this->getValues() ), $exclude );
 560         }
 561
 562         /**
 563          * Get the values passed in the query string.
 564          * No transformation is performed on the values.
 565          *
 566          * @return Array
 567          */
 568         public function getQueryValues() {
 569                 return $_GET;
 570         }
 571
 572         /**
 573          * Get the HTTP method used for this request.
 574          *
 575          * @return String
 576          */
 577         public function getMethod() {
 578                 return isset( $_SERVER['REQUEST_METHOD'] ) ? $_SERVER['REQUEST_METHOD'] : 'GET';
 579         }
 580
 581         /**
 582          * Returns true if the present request was reached by a POST operation,
 583          * false otherwise (GET, HEAD, or command-line).
 584          *
 585          * Note that values retrieved by the object may come from the
 586          * GET URL etc even on a POST request.
 587          *
 588          * @return Boolean
 589          */
 590         public function wasPosted() {
 591                 return $this->getMethod() == 'POST';
 592         }
 593
 594         /**
 595          * Returns true if there is a session cookie set.
 596          * This does not necessarily mean that the user is logged in!
 597          *
 598          * If you want to check for an open session, use session_id()
 599          * instead; that will also tell you if the session was opened
 600          * during the current request (in which case the cookie will
 601          * be sent back to the client at the end of the script run).
 602          *
 603          * @return Boolean
 604          */
 605         public function checkSessionCookie() {
 606                 return isset( $_COOKIE[session_name()] );
 607         }
 608
 609         /**
 610          * Get a cookie from the $_COOKIE jar
 611          *
 612          * @param string $key the name of the cookie
 613          * @param string $prefix a prefix to use for the cookie name, if not $wgCookiePrefix
 614          * @param $default Mixed: what to return if the value isn't found
 615          * @return Mixed: cookie value or $default if the cookie not set
 616          */
 617         public function getCookie( $key, $prefix = null, $default = null ) {
 618                 if ( $prefix === null ) {
 619                         global $wgCookiePrefix;
 620                         $prefix = $wgCookiePrefix;
 621                 }
 622                 return $this->getGPCVal( $_COOKIE, $prefix . $key, $default );
 623         }
 624
 625         /**
 626          * Return the path and query string portion of the request URI.
 627          * This will be suitable for use as a relative link in HTML output.
 628          *
 629          * @throws MWException
 630          * @return String
 631          */
 632         public function getRequestURL() {
 633                 if ( isset( $_SERVER['REQUEST_URI'] ) && strlen( $_SERVER['REQUEST_URI'] ) ) {
 634                         $base = $_SERVER['REQUEST_URI'];
 635                 } elseif ( isset( $_SERVER['HTTP_X_ORIGINAL_URL'] ) && strlen( $_SERVER['HTTP_X_ORIGINAL_URL'] ) ) {
 636                         // Probably IIS; doesn't set REQUEST_URI
 637                         $base = $_SERVER['HTTP_X_ORIGINAL_URL'];
 638                 } elseif ( isset( $_SERVER['SCRIPT_NAME'] ) ) {
 639                         $base = $_SERVER['SCRIPT_NAME'];
 640                         if ( isset( $_SERVER['QUERY_STRING'] ) && $_SERVER['QUERY_STRING'] != '' ) {
 641                                 $base .= '?' . $_SERVER['QUERY_STRING'];
 642                         }
 643                 } else {
 644                         // This shouldn't happen!
 645                         throw new MWException( "Web server doesn't provide either " .
 646                                 "REQUEST_URI, HTTP_X_ORIGINAL_URL or SCRIPT_NAME. Report details " .
 647                                 "of your web server configuration to http://bugzilla.wikimedia.org/" );
 648                 }
 649                 // User-agents should not send a fragment with the URI, but
 650                 // if they do, and the web server passes it on to us, we
 651                 // need to strip it or we get false-positive redirect loops
 652                 // or weird output URLs
 653                 $hash = strpos( $base, '#' );
 654                 if ( $hash !== false ) {
 655                         $base = substr( $base, 0, $hash );
 656                 }
 657
 658                 if ( $base[0] == '/' ) {
 659                         // More than one slash will look like it is protocol relative
 660                         return preg_replace( '!^/+!', '/', $base );
 661                 } else {
 662                         // We may get paths with a host prepended; strip it.
 663                         return preg_replace( '!^[^:]+://[^/]+/+!', '/', $base );
 664                 }
 665         }
 666
 667         /**
 668          * Return the request URI with the canonical service and hostname, path,
 669          * and query string. This will be suitable for use as an absolute link
 670          * in HTML or other output.
 671          *
 672          * If $wgServer is protocol-relative, this will return a fully
 673          * qualified URL with the protocol that was used for this request.
 674          *
 675          * @return String
 676          */
 677         public function getFullRequestURL() {
 678                 return wfExpandUrl( $this->getRequestURL(), PROTO_CURRENT );
 679         }
 680
 681         /**
 682          * Take an arbitrary query and rewrite the present URL to include it
 683          * @param string $query query string fragment; do not include initial '?'
 684          *
 685          * @return String
 686          */
 687         public function appendQuery( $query ) {
 688                 return $this->appendQueryArray( wfCgiToArray( $query ) );
 689         }
 690
 691         /**
 692          * HTML-safe version of appendQuery().
 693          * @deprecated: Deprecated in 1.20, warnings in 1.21, remove in 1.22.
 694          *
 695          * @param string $query query string fragment; do not include initial '?'
 696          * @return String
 697          */
 698         public function escapeAppendQuery( $query ) {
 699                 return htmlspecialchars( $this->appendQuery( $query ) );
 700         }
 701
 702         /**
 703          * @param $key
 704          * @param $value
 705          * @param $onlyquery bool
 706          * @return String
 707          */
 708         public function appendQueryValue( $key, $value, $onlyquery = false ) {
 709                 return $this->appendQueryArray( array( $key => $value ), $onlyquery );
 710         }
 711
 712         /**
 713          * Appends or replaces value of query variables.
 714          *
 715          * @param array $array of values to replace/add to query
 716          * @param bool $onlyquery whether to only return the query string and not
 717          *                   the complete URL
 718          * @return String
 719          */
 720         public function appendQueryArray( $array, $onlyquery = false ) {
 721                 global $wgTitle;
 722                 $newquery = $this->getQueryValues();
 723                 unset( $newquery['title'] );
 724                 $newquery = array_merge( $newquery, $array );
 725                 $query = wfArrayToCgi( $newquery );
 726                 return $onlyquery ? $query : $wgTitle->getLocalURL( $query );
 727         }
 728
 729         /**
 730          * Check for limit and offset parameters on the input, and return sensible
 731          * defaults if not given. The limit must be positive and is capped at 5000.
 732          * Offset must be positive but is not capped.
 733          *
 734          * @param $deflimit Integer: limit to use if no input and the user hasn't set the option.
 735          * @param string $optionname to specify an option other than rclimit to pull from.
 736          * @return array first element is limit, second is offset
 737          */
 738         public function getLimitOffset( $deflimit = 50, $optionname = 'rclimit' ) {
 739                 global $wgUser;
 740
 741                 $limit = $this->getInt( 'limit', 0 );
 742                 if ( $limit < 0 ) {
 743                         $limit = 0;
 744                 }
 745                 if ( ( $limit == 0 ) && ( $optionname != '' ) ) {
 746                         $limit = $wgUser->getIntOption( $optionname );
 747                 }
 748                 if ( $limit <= 0 ) {
 749                         $limit = $deflimit;
 750                 }
 751                 if ( $limit > 5000 ) {
 752                         $limit = 5000; # We have *some* limits...
 753                 }
 754
 755                 $offset = $this->getInt( 'offset', 0 );
 756                 if ( $offset < 0 ) {
 757                         $offset = 0;
 758                 }
 759
 760                 return array( $limit, $offset );
 761         }
 762
 763         /**
 764          * Return the path to the temporary file where PHP has stored the upload.
 765          *
 766          * @param $key String:
 767          * @return string or NULL if no such file.
 768          */
 769         public function getFileTempname( $key ) {
 770                 $file = new WebRequestUpload( $this, $key );
 771                 return $file->getTempName();
 772         }
 773
 774         /**
 775          * Return the size of the upload, or 0.
 776          *
 777          * @deprecated since 1.17
 778          * @param $key String:
 779          * @return integer
 780          */
 781         public function getFileSize( $key ) {
 782                 wfDeprecated( __METHOD__, '1.17' );
 783                 $file = new WebRequestUpload( $this, $key );
 784                 return $file->getSize();
 785         }
 786
 787         /**
 788          * Return the upload error or 0
 789          *
 790          * @param $key String:
 791          * @return integer
 792          */
 793         public function getUploadError( $key ) {
 794                 $file = new WebRequestUpload( $this, $key );
 795                 return $file->getError();
 796         }
 797
 798         /**
 799          * Return the original filename of the uploaded file, as reported by
 800          * the submitting user agent. HTML-style character entities are
 801          * interpreted and normalized to Unicode normalization form C, in part
 802          * to deal with weird input from Safari with non-ASCII filenames.
 803          *
 804          * Other than this the name is not verified for being a safe filename.
 805          *
 806          * @param $key String:
 807          * @return string or NULL if no such file.
 808          */
 809         public function getFileName( $key ) {
 810                 $file = new WebRequestUpload( $this, $key );
 811                 return $file->getName();
 812         }
 813
 814         /**
 815          * Return a WebRequestUpload object corresponding to the key
 816          *
 817          * @param $key string
 818          * @return WebRequestUpload
 819          */
 820         public function getUpload( $key ) {
 821                 return new WebRequestUpload( $this, $key );
 822         }
 823
 824         /**
 825          * Return a handle to WebResponse style object, for setting cookies,
 826          * headers and other stuff, for Request being worked on.
 827          *
 828          * @return WebResponse
 829          */
 830         public function response() {
 831                 /* Lazy initialization of response object for this request */
 832                 if ( !is_object( $this->response ) ) {
 833                         $class = ( $this instanceof FauxRequest ) ? 'FauxResponse' : 'WebResponse';
 834                         $this->response = new $class();
 835                 }
 836                 return $this->response;
 837         }
 838
 839         /**
 840          * Initialise the header list
 841          */
 842         private function initHeaders() {
 843                 if ( count( $this->headers ) ) {
 844                         return;
 845                 }
 846
 847                 if ( function_exists( 'apache_request_headers' ) ) {
 848                         foreach ( apache_request_headers() as $tempName => $tempValue ) {
 849                                 $this->headers[strtoupper( $tempName )] = $tempValue;
 850                         }
 851                 } else {
 852                         foreach ( $_SERVER as $name => $value ) {
 853                                 if ( substr( $name, 0, 5 ) === 'HTTP_' ) {
 854                                         $name = str_replace( '_', '-', substr( $name, 5 ) );
 855                                         $this->headers[$name] = $value;
 856                                 } elseif ( $name === 'CONTENT_LENGTH' ) {
 857                                         $this->headers['CONTENT-LENGTH'] = $value;
 858                                 }
 859                         }
 860                 }
 861         }
 862
 863         /**
 864          * Get an array containing all request headers
 865          *
 866          * @return Array mapping header name to its value
 867          */
 868         public function getAllHeaders() {
 869                 $this->initHeaders();
 870                 return $this->headers;
 871         }
 872
 873         /**
 874          * Get a request header, or false if it isn't set
 875          * @param string $name case-insensitive header name
 876          *
 877          * @return string|bool False on failure
 878          */
 879         public function getHeader( $name ) {
 880                 $this->initHeaders();
 881                 $name = strtoupper( $name );
 882                 if ( isset( $this->headers[$name] ) ) {
 883                         return $this->headers[$name];
 884                 } else {
 885                         return false;
 886                 }
 887         }
 888
 889         /**
 890          * Get data from $_SESSION
 891          *
 892          * @param string $key name of key in $_SESSION
 893          * @return Mixed
 894          */
 895         public function getSessionData( $key ) {
 896                 if ( !isset( $_SESSION[$key] ) ) {
 897                         return null;
 898                 }
 899                 return $_SESSION[$key];
 900         }
 901
 902         /**
 903          * Set session data
 904          *
 905          * @param string $key name of key in $_SESSION
 906          * @param $data Mixed
 907          */
 908         public function setSessionData( $key, $data ) {
 909                 $_SESSION[$key] = $data;
 910         }
 911
 912         /**
 913          * Check if Internet Explorer will detect an incorrect cache extension in
 914          * PATH_INFO or QUERY_STRING. If the request can't be allowed, show an error
 915          * message or redirect to a safer URL. Returns true if the URL is OK, and
 916          * false if an error message has been shown and the request should be aborted.
 917          *
 918          * @param $extWhitelist array
 919          * @throws HttpError
 920          * @return bool
 921          */
 922         public function checkUrlExtension( $extWhitelist = array() ) {
 923                 global $wgScriptExtension;
 924                 $extWhitelist[] = ltrim( $wgScriptExtension, '.' );
 925                 if ( IEUrlExtension::areServerVarsBad( $_SERVER, $extWhitelist ) ) {
 926                         if ( !$this->wasPosted() ) {
 927                                 $newUrl = IEUrlExtension::fixUrlForIE6(
 928                                         $this->getFullRequestURL(), $extWhitelist );
 929                                 if ( $newUrl !== false ) {
 930                                         $this->doSecurityRedirect( $newUrl );
 931                                         return false;
 932                                 }
 933                         }
 934                         throw new HttpError( 403,
 935                                 'Invalid file extension found in the path info or query string.' );
 936                 }
 937                 return true;
 938         }
 939
 940         /**
 941          * Attempt to redirect to a URL with a QUERY_STRING that's not dangerous in
 942          * IE 6. Returns true if it was successful, false otherwise.
 943          *
 944          * @param $url string
 945          * @return bool
 946          */
 947         protected function doSecurityRedirect( $url ) {
 948                 header( 'Location: ' . $url );
 949                 header( 'Content-Type: text/html' );
 950                 $encUrl = htmlspecialchars( $url );
 951                 echo <<<HTML
 952 <html>
 953 <head>
 954 <title>Security redirect</title>
 955 </head>
 956 <body>
 957 <h1>Security redirect</h1>
 958 <p>
 959 We can't serve non-HTML content from the URL you have requested, because
 960 Internet Explorer would interpret it as an incorrect and potentially dangerous
 961 content type.</p>
 962 <p>Instead, please use <a href="$encUrl">this URL</a>, which is the same as the URL you have requested, except that
 963 "&amp;*" is appended. This prevents Internet Explorer from seeing a bogus file
 964 extension.
 965 </p>
 966 </body>
 967 </html>
 968 HTML;
 969                 echo "\n";
 970                 return true;
 971         }
 972
 973         /**
 974          * Returns true if the PATH_INFO ends with an extension other than a script
 975          * extension. This could confuse IE for scripts that send arbitrary data which
 976          * is not HTML but may be detected as such.
 977          *
 978          * Various past attempts to use the URL to make this check have generally
 979          * run up against the fact that CGI does not provide a standard method to
 980          * determine the URL. PATH_INFO may be mangled (e.g. if cgi.fix_pathinfo=0),
 981          * but only by prefixing it with the script name and maybe some other stuff,
 982          * the extension is not mangled. So this should be a reasonably portable
 983          * way to perform this security check.
 984          *
 985          * Also checks for anything that looks like a file extension at the end of
 986          * QUERY_STRING, since IE 6 and earlier will use this to get the file type
 987          * if there was no dot before the question mark (bug 28235).
 988          *
 989          * @deprecated Use checkUrlExtension().
 990          *
 991          * @param $extWhitelist array
 992          *
 993          * @return bool
 994          */
 995         public function isPathInfoBad( $extWhitelist = array() ) {
 996                 wfDeprecated( __METHOD__, '1.17' );
 997                 global $wgScriptExtension;
 998                 $extWhitelist[] = ltrim( $wgScriptExtension, '.' );
 999                 return IEUrlExtension::areServerVarsBad( $_SERVER, $extWhitelist );
1000         }
1001
1002         /**
1003          * Parse the Accept-Language header sent by the client into an array
1004          * @return array array( languageCode => q-value ) sorted by q-value in descending order then
1005          *                                                appearing time in the header in ascending order.
1006          * May contain the "language" '*', which applies to languages other than those explicitly listed.
1007          * This is aligned with rfc2616 section 14.4
1008          * Preference for earlier languages appears in rfc3282 as an extension to HTTP/1.1.
1009          */
1010         public function getAcceptLang() {
1011                 // Modified version of code found at http://www.thefutureoftheweb.com/blog/use-accept-language-header
1012                 $acceptLang = $this->getHeader( 'Accept-Language' );
1013                 if ( !$acceptLang ) {
1014                         return array();
1015                 }
1016
1017                 // Return the language codes in lower case
1018                 $acceptLang = strtolower( $acceptLang );
1019
1020                 // Break up string into pieces (languages and q factors)
1021                 $lang_parse = null;
1022                 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})?)?)?/',
1023                         $acceptLang, $lang_parse );
1024
1025                 if ( !count( $lang_parse[1] ) ) {
1026                         return array();
1027                 }
1028
1029                 $langcodes = $lang_parse[1];
1030                 $qvalues = $lang_parse[4];
1031                 $indices = range( 0, count( $lang_parse[1] ) - 1 );
1032
1033                 // Set default q factor to 1
1034                 foreach ( $indices as $index ) {
1035                         if ( $qvalues[$index] === '' ) {
1036                                 $qvalues[$index] = 1;
1037                         } elseif ( $qvalues[$index] == 0 ) {
1038                                 unset( $langcodes[$index], $qvalues[$index], $indices[$index] );
1039                         }
1040                 }
1041
1042                 // Sort list. First by $qvalues, then by order. Reorder $langcodes the same way
1043                 array_multisort( $qvalues, SORT_DESC, SORT_NUMERIC, $indices, $langcodes );
1044
1045                 // Create a list like "en" => 0.8
1046                 $langs = array_combine( $langcodes, $qvalues );
1047
1048                 return $langs;
1049         }
1050
1051         /**
1052          * Fetch the raw IP from the request
1053          *
1054          * @since 1.19
1055          *
1056          * @throws MWException
1057          * @return String
1058          */
1059         protected function getRawIP() {
1060                 if ( !isset( $_SERVER['REMOTE_ADDR'] ) ) {
1061                         return null;
1062                 }
1063
1064                 if ( is_array( $_SERVER['REMOTE_ADDR'] ) || strpos( $_SERVER['REMOTE_ADDR'], ',' ) !== false ) {
1065                         throw new MWException( __METHOD__ . " : Could not determine the remote IP address due to multiple values." );
1066                 } else {
1067                         $ipchain = $_SERVER['REMOTE_ADDR'];
1068                 }
1069
1070                 return IP::canonicalize( $ipchain );
1071         }
1072
1073         /**
1074          * Work out the IP address based on various globals
1075          * For trusted proxies, use the XFF client IP (first of the chain)
1076          *
1077          * @since 1.19
1078          *
1079          * @throws MWException
1080          * @return string
1081          */
1082         public function getIP() {
1083                 global $wgUsePrivateIPs;
1084
1085                 # Return cached result
1086                 if ( $this->ip !== null ) {
1087                         return $this->ip;
1088                 }
1089
1090                 # collect the originating ips
1091                 $ip = $this->getRawIP();
1092
1093                 # Append XFF
1094                 $forwardedFor = $this->getHeader( 'X-Forwarded-For' );
1095                 if ( $forwardedFor !== false ) {
1096                         $ipchain = array_map( 'trim', explode( ',', $forwardedFor ) );
1097                         $ipchain = array_reverse( $ipchain );
1098                         if ( $ip ) {
1099                                 array_unshift( $ipchain, $ip );
1100                         }
1101
1102                         # Step through XFF list and find the last address in the list which is a trusted server
1103                         # Set $ip to the IP address given by that trusted server, unless the address is not sensible (e.g. private)
1104                         foreach ( $ipchain as $i => $curIP ) {
1105                                 $curIP = IP::canonicalize( $curIP );
1106                                 if ( wfIsTrustedProxy( $curIP ) ) {
1107                                         if ( isset( $ipchain[$i + 1] ) ) {
1108                                                 if ( $wgUsePrivateIPs || IP::isPublic( $ipchain[$i + 1] ) ) {
1109                                                         $ip = $ipchain[$i + 1];
1110                                                 }
1111                                         }
1112                                 } else {
1113                                         break;
1114                                 }
1115                         }
1116                 }
1117
1118                 # Allow extensions to improve our guess
1119                 wfRunHooks( 'GetIP', array( &$ip ) );
1120
1121                 if ( !$ip ) {
1122                         throw new MWException( "Unable to determine IP" );
1123                 }
1124
1125                 wfDebug( "IP: $ip\n" );
1126                 $this->ip = $ip;
1127                 return $ip;
1128         }
1129
1130         /**
1131          * @param string $ip
1132          * @return void
1133          * @since 1.21
1134          */
1135         public function setIP( $ip ) {
1136                 $this->ip = $ip;
1137         }
1138 }
1139
1140 /**
1141  * Object to access the $_FILES array
1142  */
1143 class WebRequestUpload {
1144         protected $request;
1145         protected $doesExist;
1146         protected $fileInfo;
1147
1148         /**
1149          * Constructor. Should only be called by WebRequest
1150          *
1151          * @param $request WebRequest The associated request
1152          * @param string $key Key in $_FILES array (name of form field)
1153          */
1154         public function __construct( $request, $key ) {
1155                 $this->request = $request;
1156                 $this->doesExist = isset( $_FILES[$key] );
1157                 if ( $this->doesExist ) {
1158                         $this->fileInfo = $_FILES[$key];
1159                 }
1160         }
1161
1162         /**
1163          * Return whether a file with this name was uploaded.
1164          *
1165          * @return bool
1166          */
1167         public function exists() {
1168                 return $this->doesExist;
1169         }
1170
1171         /**
1172          * Return the original filename of the uploaded file
1173          *
1174          * @return mixed Filename or null if non-existent
1175          */
1176         public function getName() {
1177                 if ( !$this->exists() ) {
1178                         return null;
1179                 }
1180
1181                 global $wgContLang;
1182                 $name = $this->fileInfo['name'];
1183
1184                 # Safari sends filenames in HTML-encoded Unicode form D...
1185                 # Horrid and evil! Let's try to make some kind of sense of it.
1186                 $name = Sanitizer::decodeCharReferences( $name );
1187                 $name = $wgContLang->normalize( $name );
1188                 wfDebug( __METHOD__ . ": {$this->fileInfo['name']} normalized to '$name'\n" );
1189                 return $name;
1190         }
1191
1192         /**
1193          * Return the file size of the uploaded file
1194          *
1195          * @return int File size or zero if non-existent
1196          */
1197         public function getSize() {
1198                 if ( !$this->exists() ) {
1199                         return 0;
1200                 }
1201
1202                 return $this->fileInfo['size'];
1203         }
1204
1205         /**
1206          * Return the path to the temporary file
1207          *
1208          * @return mixed Path or null if non-existent
1209          */
1210         public function getTempName() {
1211                 if ( !$this->exists() ) {
1212                         return null;
1213                 }
1214
1215                 return $this->fileInfo['tmp_name'];
1216         }
1217
1218         /**
1219          * Return the upload error. See link for explanation
1220          * http://www.php.net/manual/en/features.file-upload.errors.php
1221          *
1222          * @return int One of the UPLOAD_ constants, 0 if non-existent
1223          */
1224         public function getError() {
1225                 if ( !$this->exists() ) {
1226                         return 0; # UPLOAD_ERR_OK
1227                 }
1228
1229                 return $this->fileInfo['error'];
1230         }
1231
1232         /**
1233          * Returns whether this upload failed because of overflow of a maximum set
1234          * in php.ini
1235          *
1236          * @return bool
1237          */
1238         public function isIniSizeOverflow() {
1239                 if ( $this->getError() == UPLOAD_ERR_INI_SIZE ) {
1240                         # PHP indicated that upload_max_filesize is exceeded
1241                         return true;
1242                 }
1243
1244                 $contentLength = $this->request->getHeader( 'CONTENT_LENGTH' );
1245                 if ( $contentLength > wfShorthandToInteger( ini_get( 'post_max_size' ) ) ) {
1246                         # post_max_size is exceeded
1247                         return true;
1248                 }
1249
1250                 return false;
1251         }
1252 }
1253
1254 /**
1255  * WebRequest clone which takes values from a provided array.
1256  *
1257  * @ingroup HTTP
1258  */
1259 class FauxRequest extends WebRequest {
1260         private $wasPosted = false;
1261         private $session = array();
1262
1263         /**
1264          * @param array $data of *non*-urlencoded key => value pairs, the
1265          *   fake GET/POST values
1266          * @param bool $wasPosted whether to treat the data as POST
1267          * @param $session Mixed: session array or null
1268          * @throws MWException
1269          */
1270         public function __construct( $data = array(), $wasPosted = false, $session = null ) {
1271                 if ( is_array( $data ) ) {
1272                         $this->data = $data;
1273                 } else {
1274                         throw new MWException( "FauxRequest() got bogus data" );
1275                 }
1276                 $this->wasPosted = $wasPosted;
1277                 if ( $session ) {
1278                         $this->session = $session;
1279                 }
1280         }
1281
1282         /**
1283          * @param $method string
1284          * @throws MWException
1285          */
1286         private function notImplemented( $method ) {
1287                 throw new MWException( "{$method}() not implemented" );
1288         }
1289
1290         /**
1291          * @param $name string
1292          * @param $default string
1293          * @return string
1294          */
1295         public function getText( $name, $default = '' ) {
1296                 # Override; don't recode since we're using internal data
1297                 return (string)$this->getVal( $name, $default );
1298         }
1299
1300         /**
1301          * @return Array
1302          */
1303         public function getValues() {
1304                 return $this->data;
1305         }
1306
1307         /**
1308          * @return array
1309          */
1310         public function getQueryValues() {
1311                 if ( $this->wasPosted ) {
1312                         return array();
1313                 } else {
1314                         return $this->data;
1315                 }
1316         }
1317
1318         public function getMethod() {
1319                 return $this->wasPosted ? 'POST' : 'GET';
1320         }
1321
1322         /**
1323          * @return bool
1324          */
1325         public function wasPosted() {
1326                 return $this->wasPosted;
1327         }
1328
1329         public function getCookie( $key, $prefix = null, $default = null ) {
1330                 return $default;
1331         }
1332
1333         public function checkSessionCookie() {
1334                 return false;
1335         }
1336
1337         public function getRequestURL() {
1338                 $this->notImplemented( __METHOD__ );
1339         }
1340
1341         /**
1342          * @param $name
1343          * @return bool|string
1344          */
1345         public function getHeader( $name ) {
1346                 return isset( $this->headers[$name] ) ? $this->headers[$name] : false;
1347         }
1348
1349         /**
1350          * @param $name string
1351          * @param $val string
1352          */
1353         public function setHeader( $name, $val ) {
1354                 $this->headers[$name] = $val;
1355         }
1356
1357         /**
1358          * @param $key
1359          * @return mixed
1360          */
1361         public function getSessionData( $key ) {
1362                 if ( isset( $this->session[$key] ) ) {
1363                         return $this->session[$key];
1364                 }
1365                 return null;
1366         }
1367
1368         /**
1369          * @param $key
1370          * @param $data
1371          */
1372         public function setSessionData( $key, $data ) {
1373                 $this->session[$key] = $data;
1374         }
1375
1376         /**
1377          * @return array|Mixed|null
1378          */
1379         public function getSessionArray() {
1380                 return $this->session;
1381         }
1382
1383         /**
1384          * @param array $extWhitelist
1385          * @return bool
1386          */
1387         public function isPathInfoBad( $extWhitelist = array() ) {
1388                 return false;
1389         }
1390
1391         /**
1392          * @param array $extWhitelist
1393          * @return bool
1394          */
1395         public function checkUrlExtension( $extWhitelist = array() ) {
1396                 return true;
1397         }
1398
1399         /**
1400          * @return string
1401          */
1402         protected function getRawIP() {
1403                 return '127.0.0.1';
1404         }
1405 }
1406
1407 /**
1408  * Similar to FauxRequest, but only fakes URL parameters and method
1409  * (POST or GET) and use the base request for the remaining stuff
1410  * (cookies, session and headers).
1411  *
1412  * @ingroup HTTP
1413  * @since 1.19
1414  */
1415 class DerivativeRequest extends FauxRequest {
1416         private $base;
1417
1418         public function __construct( WebRequest $base, $data, $wasPosted = false ) {
1419                 $this->base = $base;
1420                 parent::__construct( $data, $wasPosted );
1421         }
1422
1423         public function getCookie( $key, $prefix = null, $default = null ) {
1424                 return $this->base->getCookie( $key, $prefix, $default );
1425         }
1426
1427         public function checkSessionCookie() {
1428                 return $this->base->checkSessionCookie();
1429         }
1430
1431         public function getHeader( $name ) {
1432                 return $this->base->getHeader( $name );
1433         }
1434
1435         public function getAllHeaders() {
1436                 return $this->base->getAllHeaders();
1437         }
1438
1439         public function getSessionData( $key ) {
1440                 return $this->base->getSessionData( $key );
1441         }
1442
1443         public function setSessionData( $key, $data ) {
1444                 $this->base->setSessionData( $key, $data );
1445         }
1446
1447         public function getAcceptLang() {
1448                 return $this->base->getAcceptLang();
1449         }
1450
1451         public function getIP() {
1452                 return $this->base->getIP();
1453         }
1454 }