maintenance/dev/includes/router.php

   1 <?php
   2 /**
   3  * Router for the php cli-server built-in webserver.
   4  * https://secure.php.net/manual/en/features.commandline.webserver.php
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  19  * http://www.gnu.org/copyleft/gpl.html
  20  *
  21  * @file
  22  */
  23
  24 if ( PHP_SAPI != 'cli-server' ) {
  25         die( "This script can only be run by php's cli-server sapi." );
  26 }
  27
  28 if ( !isset( $_SERVER['SCRIPT_FILENAME'] ) ) {
  29         // Let built-in server handle error.
  30         return false;
  31 }
  32
  33 // The SCRIPT_FILENAME can be one of three things:
  34 // 1. Absolute path to a file in the docroot associated with the
  35 //    path of the current request URL. PHP does this for any file path
  36 //    where it finds a matching file on disk. For both PHP files, and for
  37 //    static files.
  38 // 2. Relative path to router.php (this file), for any unknown URL path
  39 //    that ends in ".php" or another extension that PHP would execute.
  40 // 3. Absolute path to {docroot}/index.php, for any other unknown path.
  41 //    Effectively treating it as a 404 handler.
  42 $file = $_SERVER['SCRIPT_FILENAME'];
  43 if ( !is_readable( $file ) ) {
  44         // Let built-in server handle error.
  45         return false;
  46 }
  47
  48 $ext = pathinfo( $file, PATHINFO_EXTENSION );
  49 if ( $ext == 'php' ) {
  50         // Let built-in server handle script inclusion.
  51         return false;
  52 } else {
  53         // Serve static file with appropiate Content-Type headers.
  54         // The built-in server for PHP 7.0+ supports most files already
  55         // (contrary to PHP 5.2, which was supported when router.php was created).
  56         // But it still doesn't support as many MIME types as MediaWiki (e.g. ".json")
  57
  58         // Fallback
  59         $mime = 'text/plain';
  60         // Borrow from MimeAnalyzer
  61         $lines = explode( "\n", file_get_contents( "includes/libs/mime/mime.types" ) );
  62         foreach ( $lines as $line ) {
  63                 $exts = explode( ' ', $line );
  64                 $type = array_shift( $exts );
  65                 if ( in_array( $ext, $exts ) ) {
  66                         $mime = $type;
  67                         break;
  68                 }
  69         }
  70
  71         if ( preg_match( '#^text/#', $mime ) ) {
  72                 // Text should have a charset=UTF-8 (PHP's webserver does this too)
  73                 header( "Content-Type: $mime; charset=UTF-8" );
  74         } else {
  75                 header( "Content-Type: $mime" );
  76         }
  77         header( "Content-Length: " . filesize( $file ) );
  78         // Stream that out to the browser
  79         $f = fopen( $file, 'rb' );
  80         fpassthru( $f );
  81
  82         return true;
  83 }