50 lines
1.7 KiB
Python
50 lines
1.7 KiB
Python
"""Onionr - Private P2P Communication.
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Ensure sockets don't get made to non localhost
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"""
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import ipaddress
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import logger
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from onionrexceptions import NetworkLeak
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"""
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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"""
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def detect_socket_leaks(socket_event):
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"""Is called by the big brother broker whenever.
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a socket connection happens.
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raises exception & logs if not to loopback
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"""
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ip_address = socket_event[1][0]
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# validate is valid ip address (no hostname, etc)
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# raises NetworkLeak if not
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try:
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ip_address = ipaddress.ip_address(ip_address)
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except ValueError:
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if ip_address == "/":
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# unix socket
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return
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logger.warn(f'Conn made to {ip_address} outside of Tor/similar')
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raise \
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NetworkLeak('Conn to host/non local IP, this is a privacy issue!')
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# Validate that the IP is localhost ipv4
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if not ip_address.is_loopback and not ip_address.is_multicast \
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and not ip_address.is_private:
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logger.warn(f'Conn made to {ip_address} outside of Tor/similar')
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raise NetworkLeak('Conn to non local IP, this is a privacy concern!')
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