ssh.py 文件源码

def initialize(self):
    """
    Called inside of :meth:`TerminalApplication.initialize` shortly after the
    WebSocket is instantiated.  Attaches our two `terminal:authenticate` events
    (to create the user's .ssh dir and send our CSS template) and ensures that
    the ssh_connect.py script is executable.
    """
    ssh_connect_path = os.path.join(PLUGIN_PATH, 'scripts', 'ssh_connect.py')
    if os.path.exists(ssh_connect_path):
        import stat
        st = os.stat(ssh_connect_path)
        if not bool(st.st_mode & stat.S_IXOTH):
            try:
                os.chmod(ssh_connect_path, 0o755)
            except OSError:
                ssh_log.error(_(
                    "Could not set %s as executable.  You will need to 'chmod "
                    "a+x' that script manually.") % ssh_connect_path)
                user_msg = _(
                    "Error loading SSH plugin:  The ssh_connect.py script is "
                    "not executable.  See the logs for more details.")
                send_msg = partial(self.ws.send_message, user_msg)
                events = ["terminal:authenticate", "terminal:new_terminal"]
                self.on(events, send_msg)
    self.ssh_log = go_logger("gateone.terminal.ssh", plugin='ssh')
    # NOTE:  Why not use the 'Events' hook for these?  You can't attach two
    # functions to the same event via that mechanism because it's a dict
    # (one would override the other).
    # An alternative would be to write a single function say, on_auth() that
    # calls both of these functions then assign it to 'terminal:authenticate' in
    # the 'Events' hook.  I think this way is better since it is more explicit.
    self.on('terminal:authenticate', bind(send_ssh_css_template, self))
    self.on('terminal:authenticate', bind(create_user_ssh_dir, self))