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Socket: Fix crash non-TLS connections when using a SOCKS proxy

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This commit is contained in:
Valentin Lorentz 2021-05-27 01:08:33 +02:00
parent 3bedc86479
commit 711db72ad0
1 changed files with 16 additions and 13 deletions
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17
src/drivers/Socket.py
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@ -42,11 +42,7 @@ import threading
import select
import socket
try:
import ipaddress # Python >= 3.3 or backported ipaddress
except ImportError:
# Python < 3.3
ipaddress = None
import ipaddress
from .. import (conf, drivers, log, utils, world)
from ..utils import minisix
@ -314,8 +310,15 @@ class SocketDriver(drivers.IrcDriver, drivers.ServersMixin):
address = address.decode('utf-8')
elif (not network_config.requireStarttls()) and \
(not network_config.ssl()) and \
(not self.currentServer.force_tls_verification) and \
(ipaddress is None or not ipaddress.ip_address(address).is_loopback):
(not self.currentServer.force_tls_verification):
try:
is_loopback = ipaddress.ip_address(address).is_loopback
except ValueError:
# address is a hostname, eg. because we're using a SOCKS
# proxy
is_loopback = False
if not is_loopback:
drivers.log.warning(('Connection to network %s '
'does not use SSL/TLS, which makes it vulnerable to '
'man-in-the-middle attacks and passive eavesdropping. '