$strlen) return false;
return substr_compare($string, $test, -$testlen) === 0;
}
$file = getcwd() . '/papers/' . $_GET['file'];
$fileLink = '/akcheung/papers/' . $_GET['file'];
// write to log
$remoteIP = $_SERVER['REMOTE_ADDR'];
$remoteHost = gethostbyaddr($remoteIP);
//$remoteHost = $_SERVER['REMOTE_HOST'];
$time = date('Y/m/d-H:i:s');
if (strcmp($remoteIP, "200.82.186.130") != 0) {
$log = fopen(getcwd() . '/logs/log.txt', 'a');
fwrite($log, $time . "\t" . $remoteIP . "\t" . $remoteHost . "\t" . $_GET['file'] . "\n");
fclose($log);
}
$filename = $_GET['file'];
$fileExists = file_exists($file);
$filenameValid = endswith($filename, 'pdf') and (preg_match('/^\w+\.txt$/', $filename) == 0);
if (! $filenameValid or ! $fileExists or strcmp($remoteIP, "200.82.186.130") == 0 )
{
//$log = fopen(getcwd() . '/logs/log.txt', 'a');
//fwrite($log, "request ignored\n");
//fclose($log);
echo "";
echo "";
echo "Error!";
echo "File does not exist.
home";
echo "";
}
else
{
header("Cache-Control: no cache, must-revalidate");
header("Pragma: no-cache");
header("Content-type: application/pdf");
header('Location: ' . $fileLink);
}
?>