file.php

   1 <?PHP // $Id$
   2       // This function fetches files from the data directory
   3       // Syntax:   file.php/courseid/dir/.../dir/filename.ext
   4
   5     require_once("config.php");
   6     require_once("files/mimetypes.php");
   7
   8     $lifetime = 86400;
   9
  10     if (isset($file)) {     // workaround for situations where / syntax doesn't work
  11         $pathinfo = $file;
  12     } else {
  13         $pathinfo = get_slash_arguments("file.php");
  14     }
  15
  16     if (!$pathinfo) {
  17         error("No file parameters!");
  18     }
  19
  20     $pathinfo = urldecode($pathinfo);
  21
  22     if (! $args = parse_slash_arguments($pathinfo)) {
  23         error("No valid arguments supplied");
  24     }
  25
  26     $numargs = count($args);
  27     if ($numargs < 2 or empty($args[1])) {
  28         error("No valid arguments supplied");
  29     }
  30
  31     $courseid = (integer)$args[0];
  32
  33     $course = get_record("course", "id", $courseid);
  34
  35     if ($course->category) {
  36         require_login($courseid);
  37     }
  38
  39     // it's OK to get here if no course was specified
  40
  41     $pathname = "$CFG->dataroot$pathinfo";
  42     $filename = $args[$numargs-1];
  43
  44     if (file_exists($pathname)) {
  45         $lastmodified = filemtime($pathname);
  46         $mimetype = mimeinfo("type", $filename);
  47
  48         header("Last-Modified: " . gmdate("D, d M Y H:i:s", $lastmodified) . " GMT");
  49         header("Expires: " . gmdate("D, d M Y H:i:s", time() + $lifetime) . " GMT");
  50         header("Cache-control: max_age = $lifetime"); // a day
  51         header("Pragma: ");
  52         header("Content-disposition: inline; filename=$filename");
  53         header("Content-length: ".filesize($pathname));
  54
  55
  56         if (empty($CFG->filteruploadedfiles)) {
  57             header("Content-type: $mimetype");
  58             readfile($pathname);
  59
  60         } else {     /// Try and put the file through filters
  61             if ($mimetype == "text/html") {
  62                 header("Content-type: text/html");
  63                 echo format_text(implode('', file($pathname)), FORMAT_HTML, NULL, $courseid);
  64
  65             } else if ($mimetype == "text/plain") {
  66                 header("Content-type: text/html");
  67                 $options->newlines = false;
  68                 echo "<pre>";
  69                 echo format_text(implode('', file($pathname)), FORMAT_MOODLE, $options, $courseid);
  70                 echo "</pre>";
  71
  72             } else {    /// Just send it out raw
  73                 header("Content-type: $mimetype");
  74                 readfile($pathname);
  75             }
  76         }
  77     } else {
  78         error("Sorry, but the file you are looking for was not found ($pathname)", "course/view.php?id=$courseid");
  79     }
  80
  81     exit;
  82 ?>