# Module `src.bigbrother.ministry.ofcommunication`

Onionr - Private P2P Communication.

Ensure sockets don't get made to non localhost

Expand source code

    """Onionr - Private P2P Communication.

    Ensure sockets don't get made to non localhost
    """
    import ipaddress

    import logger
    from onionrexceptions import NetworkLeak
    """
        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 <https://www.gnu.org/licenses/>.
    """

    def detect_socket_leaks(socket_event):
        """Is called by the big brother broker whenever.

        a socket connection happens.
        raises exception & logs if not to loopback
        """
        ip_address = socket_event[1][0]

        # validate is valid ip address (no hostname, etc)
        # raises NetworkLeak if not
        try:
            ipaddress.ip_address(ip_address)
        except ValueError:
            logger.warn(f'Conn made to {ip_address} outside of Tor/similar')
            raise \
                NetworkLeak('Conn to host/non local IP, this is a privacy issue!')

        # Validate that the IP is localhost ipv4

        if not ip_address.startswith('127'):
            logger.warn(f'Conn made to {ip_address} outside of Tor/similar')
            raise NetworkLeak('Conn to non local IP, this is a privacy concern!')

## Functions

`def detect_socket_leaks(socket_event)`

  Is called by the big brother broker whenever.

  a socket connection happens. raises exception & logs if not to loopback

  Expand source code

      def detect_socket_leaks(socket_event):
          """Is called by the big brother broker whenever.

          a socket connection happens.
          raises exception & logs if not to loopback
          """
          ip_address = socket_event[1][0]

          # validate is valid ip address (no hostname, etc)
          # raises NetworkLeak if not
          try:
              ipaddress.ip_address(ip_address)
          except ValueError:
              logger.warn(f'Conn made to {ip_address} outside of Tor/similar')
              raise \
                  NetworkLeak('Conn to host/non local IP, this is a privacy issue!')

          # Validate that the IP is localhost ipv4

          if not ip_address.startswith('127'):
              logger.warn(f'Conn made to {ip_address} outside of Tor/similar')
              raise NetworkLeak('Conn to non local IP, this is a privacy concern!')