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<?php
// common/download.phpinc
// Only allows download if the user is authenticated.
if (!isset($dnFileContents)) { include('application.phpinc'); }
// Set execution time to unlimited.
set_time_limit(0);
// Allow direct file download (hotlinking)?
// Empty - allow hotlinking
// If set to nonempty value (Example: example.com) will only allow downloads when referrer contains this text
define('ALLOWED_REFERRER', '');
// Download folder, i.e. folder where you keep all files for download.
// MUST end with slash (i.e. "/" )
$debug_backtrace = debug_backtrace();
#printVar('$debug_backtrace',$debug_backtrace);
#$dnFileRow = pathinfo($_SERVER['PHP_SELF']);
$dnFileRow = str_replace('\\','/',pathinfo($debug_backtrace[0]['file']));
#printVar('$dnFileRow',$dnFileRow);
$dnFileName = "";
$i = strlen($dnFileRow['dirname'])-1;
#printVar('$i',$i);
while ( substr($dnFileRow['dirname'], $i, 1) != "/" && substr($dnFileRow['dirname'], $i, 1) != "\\" && $i >= 0 ) {
$dnFileName = substr($dnFileRow['dirname'], $i--, 1) . $dnFileName;
}
$dnFilePath = './'.$dnFileName;
#printVar('$dnFileName',$dnFileName);
#printVar('$dnFilePath',$dnFilePath);
#define('BASE_DIR',$_SESSION['DIRECTORY_ROOT'].$dnFileRow['dirname']);
define('BASE_DIR',$dnFileRow['dirname']);
#printVar('BASE_DIR',BASE_DIR);
#exit;
#setDebugOn(); include('common/pageFooter.phpinc');
// log downloads? true/false
define('LOG_DOWNLOADS',true);
// log file name
define('LOG_FILE','downloads.log');
// Allowed extensions list in format 'extension' => 'mime type'
// If myme type is set to empty string then script will try to detect mime type
// itself, which would only work if you have Mimetype or Fileinfo extensions
// installed on server.
$allowed_ext = array (
// archives
'zip' => 'application/zip',
// audio
'mp3' => 'audio/mpeg',
'wav' => 'audio/x-wav',
// documents
'conf' => 'text/plain',
'doc' => 'application/msword',
'pdf' => 'application/pdf',
'ppt' => 'application/vnd.ms-powerpoint',
'shtml' => 'application/octet-stream',
'syn' => 'text/plain',
'txt' => 'text/plain',
'xls' => 'application/vnd.ms-excel',
// executables, installers, and links
'bat' => 'application/octet-stream',
'exe' => 'application/octet-stream',
'lnk' => 'application/octet-stream',
'msi' => 'application/octet-stream',
// images
'gif' => 'image/gif',
'png' => 'image/png',
'jpg' => 'image/jpeg',
'jpeg' => 'image/jpeg',
// iso images
'iso' => 'application/octet-stream',
// video
'mpeg' => 'video/mpeg',
'mpg' => 'video/mpeg',
'mpe' => 'video/mpeg',
'mov' => 'video/quicktime',
'avi' => 'video/x-msvideo'
);
####################################################################
### DO NOT CHANGE BELOW
####################################################################
// If hotlinking not allowed then make hackers think there are some server problems
if (ALLOWED_REFERRER !== ''
&& (!isset($_SERVER['HTTP_REFERER']) || strpos(strtoupper($_SERVER['HTTP_REFERER']),strtoupper(ALLOWED_REFERRER)) === false)
) {
die("Internal server error. Please contact system administrator.");
}
// Make sure program execution doesn't time out
// Set maximum script execution time in seconds (0 means no limit)
set_time_limit(0);
// Check if the file exists
// Check in subfolders too
function find_file ($dirname, $dnFileName, &$file_path) {
$dir = opendir($dirname);
while ($file = readdir($dir)) {
if (empty($file_path) && $file != '.' && $file != '..') {
if (is_dir($dirname.'/'.$file)) {
find_file($dirname.'/'.$file, $dnFileName, $file_path);
}
else {
if (file_exists($dirname.'/'.$dnFileName)) {
$file_path = $dirname.'/'.$dnFileName;
return;
}
}
}
}
}
// find_file
// get full file path (including subfolders)
$file_path = '';
if (!isset($dnFileContents) || $dnFileContents == '') {
find_file(BASE_DIR, $dnFileName, $file_path);
if (!is_file($file_path)) {
die("File does not exist. Make sure you specified correct file name.");
}
}
// file size in bytes
$fsize = filesize($file_path);
// file extension
$fext = strtolower(substr(strrchr($dnFileName,"."),1));
// get mime type
if (!isset($allowed_ext[$fext]) || $allowed_ext[$fext] == '') {
$mtype = '';
// mime type is not set, get from server settings
if (function_exists('mime_content_type')) {
$mtype = mime_content_type($file_path);
} else {
if (function_exists('finfo_file')) {
$finfo = finfo_open(FILEINFO_MIME); // return mime type
$mtype = finfo_file($finfo, $file_path);
finfo_close($finfo);
}
}
if ($mtype == '') {
$mtype = "application/force-download";
}
} else {
// get mime type defined by admin
$mtype = $allowed_ext[$fext];
}
// check if allowed extension
#if (!array_key_exists($fext, $allowed_ext)) {
# die("Not allowed file type. Type is: $mtype");
#}
// Browser will try to save file with this filename, regardless original filename.
// You can override it if needed.
if (!isset($_GET['fc']) || empty($_GET['fc'])) {
$asdnFileName = $dnFileName;
}
else {
// remove some bad chars
$asdnFileName = str_replace(array('"',"'",'\\','/'), '', $_GET['fc']);
if ($asdnFileName === '') $asdnFileName = 'NoName';
}
// set headers
header("Pragma: public");
header("Expires: 0");
header("Cache-Control: must-revalidate, post-check=0, pre-check=0");
header("Cache-Control: public");
header("Content-Description: File Transfer");
header("Content-Type: $mtype");
header("Content-Disposition: attachment; filename=\"$asdnFileName\"");
header("Content-Transfer-Encoding: binary");
header("Content-Length: " . $fsize);
// download the file.
if (!isset($dnFileContents) || $dnFileContents == '') {
// Contents not previously set. Read and send the file as a download.
$file = @fopen($file_path,"rb");
if ($file) {
while(!feof($file)) {
print(fread($file, 1024*8));
flush();
if (connection_status()!=0) {
@fclose($file);
die();
}
}
@fclose($file);
}
} else {
// Contents previously set. Send $dnFileContents as a download.
print $dnFileContents;
}
/* * /
// log downloads
if (!LOG_DOWNLOADS) die();
$f = @fopen(LOG_FILE, 'a+');
if ($f) {
@fputs($f, date("m.d.Y g:ia")." ".$_SERVER['REMOTE_ADDR']." ".$dnFileName."\n");
@fclose($f);
}
/* */
?>