includes/WebRequest.php

   1 <?php
   2 # Deal with importing all those nasssty globals and things
   3 #
   4 # Copyright (C) 2003 Brion Vibber <brion@pobox.com>
   5 # http://www.mediawiki.org/
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 2 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License along
  18 # with this program; if not, write to the Free Software Foundation, Inc.,
  19 # 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  20 # http://www.gnu.org/copyleft/gpl.html
  21
  22 # Hypothetically, we could use a WebRequest object to fake a
  23 # self-contained request.
  24
  25 ## Enable this to debug total elimination of register_globals
  26
  27 class WebRequest {
  28         function WebRequest() {
  29                 $this->checkMagicQuotes();
  30         }
  31
  32         function &fix_magic_quotes( &$arr ) {
  33                 foreach( $arr as $key => $val ) {
  34                         if( is_array( $val ) ) {
  35                                 $this->fix_magic_quotes( $arr[$key] );
  36                         } else {
  37                                 $arr[$key] = stripslashes( $val );
  38                         }
  39                 }
  40                 return $arr;
  41         }
  42
  43         function checkMagicQuotes() {
  44                 if ( get_magic_quotes_gpc() ) {
  45                         $this->fix_magic_quotes( $_COOKIE );
  46                         $this->fix_magic_quotes( $_ENV );
  47                         $this->fix_magic_quotes( $_GET );
  48                         $this->fix_magic_quotes( $_POST );
  49                         $this->fix_magic_quotes( $_REQUEST );
  50                         $this->fix_magic_quotes( $_SERVER );
  51                 }
  52         }
  53
  54         function getGPCVal( &$arr, $name, $default ) {
  55                 if( isset( $arr[$name] ) ) {
  56                         return $arr[$name];
  57                 } else {
  58                         return $default;
  59                 }
  60         }
  61
  62         function getGPCText( &$arr, $name, $default ) {
  63                 # Text fields may be in an alternate encoding which we should check.
  64                 # Also, strip CRLF line endings down to LF to achieve consistency.
  65                 global $wgLang;
  66                 if( isset( $arr[$name] ) ) {
  67                         return str_replace( "\r\n", "\n", $wgLang->recodeInput( $arr[$name] ) );
  68                 } else {
  69                         return $default;
  70                 }
  71         }
  72
  73         function getVal( $name, $default = NULL ) {
  74                 return $this->getGPCVal( $_REQUEST, $name, $default );
  75         }
  76
  77         function getInt( $name, $default = 0 ) {
  78                 return IntVal( $this->getVal( $name, $default ) );
  79         }
  80
  81         function getBool( $name, $default = false ) {
  82                 return $this->getVal( $name, $default ) ? true : false;
  83         }
  84
  85         function getCheck( $name ) {
  86                 # Checkboxes and buttons are only present when clicked
  87                 # Presence connotes truth, abscense false
  88                 $val = $this->getVal( $name, NULL );
  89                 return isset( $val );
  90         }
  91
  92         function getText( $name, $default = '' ) {
  93                 return $this->getGPCText( $_REQUEST, $name, $default );
  94         }
  95
  96         function getValues() {
  97                 $names = func_get_args();
  98                 if ( count( $names ) == 0 ) {
  99                         $names = array_keys( $_REQUEST );
 100                 }
 101
 102                 $retVal = array();
 103                 foreach ( $names as $name ) {
 104                         $value = $this->getVal( $name );
 105                         if ( !is_null( $value ) ) {
 106                                 $retVal[$name] = $value;
 107                         }
 108                 }
 109                 return $retVal;
 110         }
 111
 112         function wasPosted() {
 113                 return $_SERVER['REQUEST_METHOD'] == 'POST';
 114         }
 115
 116         function checkSessionCookie() {
 117                 return isset( $_COOKIE[ini_get('session.name')] );
 118         }
 119
 120         function getRequestURL() {
 121                 return $_SERVER['REQUEST_URI'];
 122         }
 123
 124         function getFullRequestURL() {
 125                 global $wgServer;
 126                 return $wgServer . $this->getRequestURL();
 127         }
 128
 129         # Take an arbitrary query and rewrite the present URL to include it
 130         function appendQuery( $query ) {
 131                 global $wgTitle;
 132                 $basequery = '';
 133                 foreach( $_GET as $var => $val ) {
 134                         if( $var == 'title' ) continue;
 135                         $basequery .= '&' . urlencode( $var ) . '=' . urlencode( $val );
 136                 }
 137                 $basequery .= '&' . $query;
 138
 139                 # Trim the extra &
 140                 $basequery = substr( $basequery, 1 );
 141                 return $wgTitle->getLocalURL( $basequery );
 142         }
 143
 144         function escapeAppendQuery( $query ) {
 145                 return htmlspecialchars( $this->appendQuery( $query ) );
 146         }
 147
 148 }
 149
 150 ?>