[feature] initial port of legacy vpn code

non functional at the moment, but started doing some cleanup

1 files changed, 60 insertions, 0 deletions

diff --git a/src/leap/bitmask/vpn/udstelnet.py b/src/leap/bitmask/vpn/udstelnet.py
new file mode 100644
index 0000000..e6c8235
--- /dev/null
+++ b/src/leap/bitmask/vpn/udstelnet.py
@@ -0,0 +1,60 @@
+# -*- coding: utf-8 -*-
+# udstelnet.py
+# Copyright (C) 2013 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+import os
+import socket
+import telnetlib
+
+
+class ConnectionRefusedError(Exception):
+    pass
+
+
+class MissingSocketError(Exception):
+    pass
+
+
+class UDSTelnet(telnetlib.Telnet):
+    """
+    A telnet-alike class, that can listen on unix domain sockets
+    """
+
+    def open(self, host, port=23, timeout=socket._GLOBAL_DEFAULT_TIMEOUT):
+        """
+        Connect to a host. If port is 'unix', it will open a
+        connection over unix docmain sockets.
+
+        The optional second argument is the port number, which
+        defaults to the standard telnet port (23).
+        Don't try to reopen an already connected instance.
+        """
+        self.eof = 0
+        self.host = host
+        self.port = port
+        self.timeout = timeout
+
+        if self.port == "unix":
+            # unix sockets spoken
+            if not os.path.exists(self.host):
+                raise MissingSocketError()
+            self.sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
+            try:
+                self.sock.connect(self.host)
+            except socket.error:
+                raise ConnectionRefusedError()
+        else:
+            self.sock = socket.create_connection((host, port), timeout)