Vert.x Simple Telnet Server - command "cd"

gistfile1.groovy

////////////////////////////////////////////////////////////////////////// cd
def cd(def path, String cid) {
    path = path == "" ? null : path
    def newPath = virtual2real(path, cid);

    if (!newPath.exists() || !newPath.isDirectory())
        return [status: "ERROR", message: "### ERROR: $path: no such directory!".toString()]

    // changing directory
    _connections[cid].curDir = new File(newPath.canonicalPath);

    return [status: "OK", message: ""];
}



File virtual2real(def path, def cid) {
    def newPath = new File(BASE_DIR);

    if (path != null) {
        if (path.startsWith("/"))
            newPath = new File("$BASE_DIR$path");
        else
            newPath = new File("${_connections[cid].curDir}/$path");
    }

    // security: in case goes above root like: /../../
    if (!newPath.canonicalPath.startsWith(BASE_DIR))
        newPath = new File(BASE_DIR);

    return newPath;
}