/**
* Generates a random hashed and salted string.
* @return type
*/
function generateRandomString($urlSafe = true, $length = 10)
{
// Use date timestamp as salt.
$rand = mt_rand();
$salt = $rand . uniqid();
$string = sha1($salt);
$string = base64_encode($string);
if ($urlSafe) {
$string = makeUrlSafe($string);
}
$string = substr($string, 0, $length);
return $string;
}
/**
* Get downloaded file data for user web access
*
* @since 0.1.6
* @param (string) Local file path
* @return (array)
*/
function getFileDataForWebAccess($filename)
{
$result = array();
if (defined('DOWNLOAD_URL') && DOWNLOAD_URL !== '' && !empty($filename)) {
$url = (string) DOWNLOAD_URL . makeUrlSafe($filename);
$headers = @get_headers($url, 1);
if ($headers !== false && strpos($headers[0], '200') !== false || strpos($headers[0], '304') !== false) {
$result['access_url'] = $url;
if (isset($headers['Content-Length']) && $headers['Content-Length'] > 0) {
$result['size'] = intval($headers['Content-Length']);
}
if (isset($headers['Content-Type'])) {
$result['content_type'] = $headers['Content-Type'];
}
if (isset($headers['Last-Modified'])) {
$result['last_modified'] = $headers['Last-Modified'];
}
//$result['headers'] = $headers;
}
}
return $result;
}
