static function file_unlock($folder, $id, $field, $subitem)
{
self::_require_access($folder, "write", "edit");
$filename = self::file_download($folder, "edit", $id, $field, $subitem, true);
if (!sys_can_unlock($filename, $_SESSION["username"])) {
exit("{t}Access denied.{/t}");
}
sys_unlock($filename, $_SESSION["username"]);
return $folder;
}
function sys_unlock($file, $username)
{
if (!sys_can_unlock($file, $username)) {
return false;
}
@unlink($file . ".lck");
$locks = str_replace($file . "\n", "", file_get_contents(SIMPLE_STORE . "/locking/locks.txt"));
file_put_contents(SIMPLE_STORE . "/locking/locks.txt", $locks, LOCK_EX);
return true;
}
if (!empty($file[$_REQUEST["subitem"]])) {
$row_filename = $file[$_REQUEST["subitem"]];
} else {
$row_filename = "";
}
}
if ($row_filename == "") {
$filename = urldecode(basename($_REQUEST["filename"]));
list($target, $filename) = sys_build_filename($filename, "simple_files");
dirs_checkdir($target);
$target .= sys_get_pathnum($row["folder"]) . "/";
dirs_checkdir($target);
$target .= md5($row["folder"]) . $filename;
$newfilename = $target;
} else {
if (file_exists($row_filename . ".lck") and !sys_can_unlock($row_filename, $_SESSION["username"])) {
sys_error(t("{t}Access to this file has been denied.{/t}"), "409 Conflict");
} else {
$i = 1;
$newfilename = preg_replace("|_rev\\d+|", "", $row_filename);
$base = basename($newfilename);
$dir = dirname($newfilename);
while (file_exists($newfilename)) {
if ($pos = strrpos($base, ".")) {
$name = substr($base, 0, $pos) . "_rev" . $i++ . substr($base, $pos);
} else {
$name = $base . "_rev" . $i++;
}
$newfilename = $dir . "/" . $name;
}
if (!rename($row_filename, $newfilename)) {
