<?php
// initialise functions
if($_GET['action'] && $_GET['path']) {
// Append full document root to provided file path
$file_path = $_SERVER['DOCUMENT_ROOT'].$_GET['path'];
if(!file_exists($file_path)) {
echo 'error';
// Quit
exit();
} else {
// fetch Mime type here so avialable to both functions
$mime_types=array(
"pdf" => "application/pdf",
"txt" => "text/plain",
"html" => "text/html",
"htm" => "text/html",
"exe" => "application/octet-stream",
"zip" => "application/zip",
"doc" => "application/msword",
"xls" => "application/vnd.ms-excel",
"ppt" => "application/vnd.ms-powerpoint",
"gif" => "image/gif",
"png" => "image/png",
"jpeg"=> "image/jpg",
"jpg" => "image/jpg",
"php" => "text/plain"
);
// Get the extension of the file
$ext = substr($file_path, strrpos($file_path, '.') + 1);
// call appropriate function
switch($_GET['action']) {
case "download":
get_file($file_path);
break;
case "info":
get_info($file_path);
break;
}
}
}
// This function checks for the file, checks to see if can be opened and then forces the file to the browser
function get_file($file_path){
global $mime_type, $ext;
// Check if mimetypes exists in our list
$content_type = array_key_exists($ext, $mime_types) ? $mime_types[$ext] : "application/force-download";
// Turn off gzip for IE browsers
if(ini_get('zlib.output_compression')){
ini_set('zlib.output_compression', 'Off');
}
// Set headers to force file download
header("Pragma: public");
header("Expires: 0");
header("Cache-Control: must-revalidate, pre-check=0");
header("Content-Disposition: attachment; filename=".basename($file_path)."");
header("Content-Type: ".$content_type);
header("Content-Transfer-Encoding: binary");
header("Content-Length: ". filesize($file_path));
// Discards the contents of the output buffer
ob_clean();
flush();
// Read the file
readfile($file_path);
// Exit
exit;
}
function get_info($file_path) {
global $mime_types, $ext;
// get file info
$filename = basename($file_path);
$filetype = array_key_exists($ext, $mime_types) ? $mime_types[$ext] : "Unknown";
$filesize = round(filesize($file_path) / 1024); // file size in KB
$data = array(
"filename" => $filename,
"filetype" => $filetype,
"filesize" => $filesize,
);
echo json_encode($data);
}
?>
