includes/StreamFile.php

   1 <?php
   2
   3 function wfStreamFile( $fname ) {
   4         global $wgSquidMaxage;
   5         $stat = stat( $fname );
   6         if ( !$stat ) {
   7                 header( 'HTTP/1.0 404 Not Found' );
   8                 echo "<html><body>
   9 <h1>File not found</h1>
  10 <p>Although this PHP script ({$_SERVER['SCRIPT_NAME']}) exists, the file requested for output
  11 does not.</p>
  12 </body></html>";
  13                 return;
  14         }
  15
  16         header( "Cache-Control: s-maxage=$wgSquidMaxage, must-revalidate, max-age=0" );
  17         header( 'Last-Modified: ' . gmdate( 'D, d M Y H:i:s', $stat['mtime'] ) . ' GMT' );
  18
  19         if ( !empty( $_SERVER['HTTP_IF_MODIFIED_SINCE'] ) ) {
  20                 $modsince = preg_replace( '/;.*$/', '', $_SERVER['HTTP_IF_MODIFIED_SINCE'] );
  21                 $sinceTime = strtotime( $modsince );
  22                 if ( $stat['mtime'] <= $sinceTime ) {
  23                         header( "HTTP/1.0 304 Not Modified" );
  24                         return;
  25                 }
  26         }
  27
  28         $type = wfGetType( $fname );
  29         if ( $type ) {
  30                 header("Content-type: $type");
  31         } else {
  32                 header('Content-type: application/x-wiki');
  33         }
  34         readfile( $fname );
  35 }
  36
  37 function wfGetType( $filename ) {
  38         # There's probably a better way to do this
  39         $types = <<<END_STRING
  40 application/andrew-inset ez
  41 application/mac-binhex40 hqx
  42 application/mac-compactpro cpt
  43 application/mathml+xml mathml
  44 application/msword doc
  45 application/octet-stream bin dms lha lzh exe class so dll
  46 application/oda oda
  47 application/ogg ogg
  48 application/pdf pdf
  49 application/postscript ai eps ps
  50 application/rdf+xml rdf
  51 application/smil smi smil
  52 application/srgs gram
  53 application/srgs+xml grxml
  54 application/vnd.mif mif
  55 application/vnd.ms-excel xls
  56 application/vnd.ms-powerpoint ppt
  57 application/vnd.wap.wbxml wbxml
  58 application/vnd.wap.wmlc wmlc
  59 application/vnd.wap.wmlscriptc wmlsc
  60 application/voicexml+xml vxml
  61 application/x-bcpio bcpio
  62 application/x-cdlink vcd
  63 application/x-chess-pgn pgn
  64 application/x-cpio cpio
  65 application/x-csh csh
  66 application/x-director dcr dir dxr
  67 application/x-dvi dvi
  68 application/x-futuresplash spl
  69 application/x-gtar gtar
  70 application/x-hdf hdf
  71 application/x-javascript js
  72 application/x-koan skp skd skt skm
  73 application/x-latex latex
  74 application/x-netcdf nc cdf
  75 application/x-sh sh
  76 application/x-shar shar
  77 application/x-shockwave-flash swf
  78 application/x-stuffit sit
  79 application/x-sv4cpio sv4cpio
  80 application/x-sv4crc sv4crc
  81 application/x-tar tar
  82 application/x-tcl tcl
  83 application/x-tex tex
  84 application/x-texinfo texinfo texi
  85 application/x-troff t tr roff
  86 application/x-troff-man man
  87 application/x-troff-me me
  88 application/x-troff-ms ms
  89 application/x-ustar ustar
  90 application/x-wais-source src
  91 application/xhtml+xml xhtml xht
  92 application/xslt+xml xslt
  93 application/xml xml xsl
  94 application/xml-dtd dtd
  95 application/zip zip
  96 audio/basic au snd
  97 audio/midi mid midi kar
  98 audio/mpeg mpga mp2 mp3
  99 audio/x-aiff aif aiff aifc
 100 audio/x-mpegurl m3u
 101 audio/x-pn-realaudio ram rm
 102 audio/x-pn-realaudio-plugin rpm
 103 audio/x-realaudio ra
 104 audio/x-wav wav
 105 chemical/x-pdb pdb
 106 chemical/x-xyz xyz
 107 image/bmp bmp
 108 image/cgm cgm
 109 image/gif gif
 110 image/ief ief
 111 image/jpeg jpeg jpg jpe
 112 image/png png
 113 image/svg+xml svg
 114 image/tiff tiff tif
 115 image/vnd.djvu djvu djv
 116 image/vnd.wap.wbmp wbmp
 117 image/x-cmu-raster ras
 118 image/x-icon ico
 119 image/x-portable-anymap pnm
 120 image/x-portable-bitmap pbm
 121 image/x-portable-graymap pgm
 122 image/x-portable-pixmap ppm
 123 image/x-rgb rgb
 124 image/x-xbitmap xbm
 125 image/x-xpixmap xpm
 126 image/x-xwindowdump xwd
 127 model/iges igs iges
 128 model/mesh msh mesh silo
 129 model/vrml wrl vrml
 130 text/calendar ics ifb
 131 text/css css
 132 text/richtext rtx
 133 text/rtf rtf
 134 text/sgml sgml sgm
 135 text/tab-separated-values tsv
 136 text/vnd.wap.wml wml
 137 text/vnd.wap.wmlscript wmls
 138 text/x-setext etx
 139 video/mpeg mpeg mpg mpe
 140 video/quicktime qt mov
 141 video/vnd.mpegurl mxu
 142 video/x-msvideo avi
 143 video/x-sgi-movie movie
 144 x-conference/x-cooltalk ice
 145 END_STRING;
 146         // Needed for windows servers who use \r\n not \n
 147         $endl = "
 148 ";
 149         $types = explode( $endl, $types );
 150         if ( !preg_match( "/\.([^.]*?)$/", $filename, $matches ) ) {
 151                 return false;
 152         }
 153
 154         foreach( $types as $type ) {
 155                 $extensions = explode( " ", $type );
 156                 for ( $i=1; $i<count( $extensions ); $i++ ) {
 157                         if ( $extensions[$i] == $matches[1] ) {
 158                                 return $extensions[0];
 159                         }
 160                 }
 161         }
 162         return false;
 163 }
 164
 165 ?>