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