mirror of
https://github.com/sshuttle/sshuttle.git
synced 2024-11-28 10:53:21 +01:00
794b14eaac
Having --dst-type LOCAL rules before DNS ones forces the usage of a dnsmasq-like program to retrigger DNS requests directed locally because they are fast-tracked through the firewall and ignored by sshuttle. As dns options documentation state that they capture the requests no matter the server, and other methods and older versions behave consistently, change the iptables rules to apply DNS ones first.
293 lines
13 KiB
Python
293 lines
13 KiB
Python
import socket
|
|
from socket import AF_INET, AF_INET6
|
|
|
|
from unittest.mock import Mock, patch, call
|
|
|
|
from sshuttle.methods import get_method
|
|
|
|
|
|
def test_get_supported_features():
|
|
method = get_method('tproxy')
|
|
features = method.get_supported_features()
|
|
assert features.ipv6
|
|
assert features.udp
|
|
assert features.dns
|
|
|
|
|
|
def test_get_tcp_dstip():
|
|
sock = Mock()
|
|
sock.getsockname.return_value = ('127.0.0.1', 1024)
|
|
method = get_method('tproxy')
|
|
assert method.get_tcp_dstip(sock) == ('127.0.0.1', 1024)
|
|
assert sock.mock_calls == [call.getsockname()]
|
|
|
|
|
|
@patch("sshuttle.methods.tproxy.recv_udp")
|
|
def test_recv_udp(mock_recv_udp):
|
|
mock_recv_udp.return_value = ("127.0.0.1", "127.0.0.2", "11111")
|
|
|
|
sock = Mock()
|
|
method = get_method('tproxy')
|
|
result = method.recv_udp(sock, 1024)
|
|
assert sock.mock_calls == []
|
|
assert mock_recv_udp.mock_calls == [call(sock, 1024)]
|
|
assert result == ("127.0.0.1", "127.0.0.2", "11111")
|
|
|
|
|
|
@patch("sshuttle.methods.socket.socket")
|
|
def test_send_udp(mock_socket):
|
|
sock = Mock()
|
|
method = get_method('tproxy')
|
|
method.send_udp(sock, "127.0.0.2", "127.0.0.1", "2222222")
|
|
assert sock.mock_calls == []
|
|
assert mock_socket.mock_calls == [
|
|
call(sock.family, 2),
|
|
call().setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1),
|
|
call().setsockopt(0, 19, 1),
|
|
call().bind('127.0.0.2'),
|
|
call().sendto("2222222", '127.0.0.1'),
|
|
call().close()
|
|
]
|
|
|
|
|
|
def test_setup_tcp_listener():
|
|
listener = Mock()
|
|
method = get_method('tproxy')
|
|
method.setup_tcp_listener(listener)
|
|
assert listener.mock_calls == [
|
|
call.setsockopt(0, 19, 1)
|
|
]
|
|
|
|
|
|
def test_setup_udp_listener():
|
|
listener = Mock()
|
|
method = get_method('tproxy')
|
|
method.setup_udp_listener(listener)
|
|
assert listener.mock_calls == [
|
|
call.setsockopt(0, 19, 1),
|
|
call.v4.setsockopt(0, 20, 1),
|
|
call.v6.setsockopt(41, 74, 1)
|
|
]
|
|
|
|
|
|
def test_assert_features():
|
|
method = get_method('tproxy')
|
|
features = method.get_supported_features()
|
|
method.assert_features(features)
|
|
|
|
|
|
def test_firewall_command():
|
|
method = get_method('tproxy')
|
|
assert not method.firewall_command("something")
|
|
|
|
|
|
@patch('sshuttle.methods.tproxy.ipt')
|
|
@patch('sshuttle.methods.tproxy.ipt_chain_exists')
|
|
def test_setup_firewall(mock_ipt_chain_exists, mock_ipt):
|
|
mock_ipt_chain_exists.return_value = True
|
|
method = get_method('tproxy')
|
|
assert method.name == 'tproxy'
|
|
|
|
# IPV6
|
|
|
|
method.setup_firewall(
|
|
1024, 1026,
|
|
[(AF_INET6, u'2404:6800:4004:80c::33')],
|
|
AF_INET6,
|
|
[(AF_INET6, 64, False, u'2404:6800:4004:80c::', 8000, 9000),
|
|
(AF_INET6, 128, True, u'2404:6800:4004:80c::101f', 8080, 8080)],
|
|
True,
|
|
None,
|
|
None,
|
|
'0x01')
|
|
assert mock_ipt_chain_exists.mock_calls == [
|
|
call(AF_INET6, 'mangle', 'sshuttle-m-1024'),
|
|
call(AF_INET6, 'mangle', 'sshuttle-t-1024'),
|
|
call(AF_INET6, 'mangle', 'sshuttle-d-1024')
|
|
]
|
|
assert mock_ipt.mock_calls == [
|
|
call(AF_INET6, 'mangle', '-D', 'OUTPUT', '-j', 'sshuttle-m-1024'),
|
|
call(AF_INET6, 'mangle', '-F', 'sshuttle-m-1024'),
|
|
call(AF_INET6, 'mangle', '-X', 'sshuttle-m-1024'),
|
|
call(AF_INET6, 'mangle', '-D', 'PREROUTING', '-j', 'sshuttle-t-1024'),
|
|
call(AF_INET6, 'mangle', '-F', 'sshuttle-t-1024'),
|
|
call(AF_INET6, 'mangle', '-X', 'sshuttle-t-1024'),
|
|
call(AF_INET6, 'mangle', '-F', 'sshuttle-d-1024'),
|
|
call(AF_INET6, 'mangle', '-X', 'sshuttle-d-1024'),
|
|
call(AF_INET6, 'mangle', '-N', 'sshuttle-m-1024'),
|
|
call(AF_INET6, 'mangle', '-F', 'sshuttle-m-1024'),
|
|
call(AF_INET6, 'mangle', '-N', 'sshuttle-d-1024'),
|
|
call(AF_INET6, 'mangle', '-F', 'sshuttle-d-1024'),
|
|
call(AF_INET6, 'mangle', '-N', 'sshuttle-t-1024'),
|
|
call(AF_INET6, 'mangle', '-F', 'sshuttle-t-1024'),
|
|
call(AF_INET6, 'mangle', '-I', 'OUTPUT', '1', '-j', 'sshuttle-m-1024'),
|
|
call(AF_INET6, 'mangle', '-I', 'PREROUTING', '1', '-j',
|
|
'sshuttle-t-1024'),
|
|
call(AF_INET6, 'mangle', '-A', 'sshuttle-m-1024', '-j', 'MARK',
|
|
'--set-mark', '0x01', '--dest', u'2404:6800:4004:80c::33/32',
|
|
'-m', 'udp', '-p', 'udp', '--dport', '53'),
|
|
call(AF_INET6, 'mangle', '-A', 'sshuttle-t-1024', '-j', 'TPROXY',
|
|
'--tproxy-mark', '0x01',
|
|
'--dest', u'2404:6800:4004:80c::33/32',
|
|
'-m', 'udp', '-p', 'udp', '--dport', '53', '--on-port', '1026'),
|
|
call(AF_INET6, 'mangle', '-A', 'sshuttle-t-1024', '-j', 'RETURN',
|
|
'-m', 'addrtype', '--dst-type', 'LOCAL'),
|
|
call(AF_INET6, 'mangle', '-A', 'sshuttle-m-1024', '-j', 'RETURN',
|
|
'-m', 'addrtype', '--dst-type', 'LOCAL'),
|
|
call(AF_INET6, 'mangle', '-A', 'sshuttle-d-1024', '-j', 'MARK',
|
|
'--set-mark', '0x01'),
|
|
call(AF_INET6, 'mangle', '-A', 'sshuttle-d-1024', '-j', 'ACCEPT'),
|
|
call(AF_INET6, 'mangle', '-A', 'sshuttle-t-1024', '-m', 'socket',
|
|
'-j', 'sshuttle-d-1024', '-m', 'tcp', '-p', 'tcp'),
|
|
call(AF_INET6, 'mangle', '-A', 'sshuttle-t-1024', '-m', 'socket',
|
|
'-j', 'sshuttle-d-1024', '-m', 'udp', '-p', 'udp'),
|
|
call(AF_INET6, 'mangle', '-A', 'sshuttle-m-1024', '-j', 'RETURN',
|
|
'--dest', u'2404:6800:4004:80c::101f/128',
|
|
'-m', 'tcp', '-p', 'tcp', '--dport', '8080:8080'),
|
|
call(AF_INET6, 'mangle', '-A', 'sshuttle-t-1024', '-j', 'RETURN',
|
|
'--dest', u'2404:6800:4004:80c::101f/128',
|
|
'-m', 'tcp', '-p', 'tcp', '--dport', '8080:8080'),
|
|
call(AF_INET6, 'mangle', '-A', 'sshuttle-m-1024', '-j', 'RETURN',
|
|
'--dest', u'2404:6800:4004:80c::101f/128',
|
|
'-m', 'udp', '-p', 'udp', '--dport', '8080:8080'),
|
|
call(AF_INET6, 'mangle', '-A', 'sshuttle-t-1024', '-j', 'RETURN',
|
|
'--dest', u'2404:6800:4004:80c::101f/128',
|
|
'-m', 'udp', '-p', 'udp', '--dport', '8080:8080'),
|
|
call(AF_INET6, 'mangle', '-A', 'sshuttle-m-1024', '-j', 'MARK',
|
|
'--set-mark', '0x01', '--dest', u'2404:6800:4004:80c::/64',
|
|
'-m', 'tcp', '-p', 'tcp', '--dport', '8000:9000'),
|
|
call(AF_INET6, 'mangle', '-A', 'sshuttle-t-1024', '-j', 'TPROXY',
|
|
'--tproxy-mark', '0x01', '--dest',
|
|
u'2404:6800:4004:80c::/64',
|
|
'-m', 'tcp', '-p', 'tcp', '--dport', '8000:9000',
|
|
'--on-port', '1024'),
|
|
call(AF_INET6, 'mangle', '-A', 'sshuttle-m-1024', '-j', 'MARK',
|
|
'--set-mark', '0x01', '--dest', u'2404:6800:4004:80c::/64',
|
|
'-m', 'udp', '-p', 'udp', '--dport', '8000:9000'),
|
|
call(AF_INET6, 'mangle', '-A', 'sshuttle-t-1024', '-j', 'TPROXY',
|
|
'--tproxy-mark', '0x01', '--dest',
|
|
u'2404:6800:4004:80c::/64',
|
|
'-m', 'udp', '-p', 'udp', '--dport', '8000:9000',
|
|
'--on-port', '1024')
|
|
]
|
|
mock_ipt_chain_exists.reset_mock()
|
|
mock_ipt.reset_mock()
|
|
|
|
method.restore_firewall(1025, AF_INET6, True, None, None)
|
|
assert mock_ipt_chain_exists.mock_calls == [
|
|
call(AF_INET6, 'mangle', 'sshuttle-m-1025'),
|
|
call(AF_INET6, 'mangle', 'sshuttle-t-1025'),
|
|
call(AF_INET6, 'mangle', 'sshuttle-d-1025')
|
|
]
|
|
assert mock_ipt.mock_calls == [
|
|
call(AF_INET6, 'mangle', '-D', 'OUTPUT', '-j', 'sshuttle-m-1025'),
|
|
call(AF_INET6, 'mangle', '-F', 'sshuttle-m-1025'),
|
|
call(AF_INET6, 'mangle', '-X', 'sshuttle-m-1025'),
|
|
call(AF_INET6, 'mangle', '-D', 'PREROUTING', '-j', 'sshuttle-t-1025'),
|
|
call(AF_INET6, 'mangle', '-F', 'sshuttle-t-1025'),
|
|
call(AF_INET6, 'mangle', '-X', 'sshuttle-t-1025'),
|
|
call(AF_INET6, 'mangle', '-F', 'sshuttle-d-1025'),
|
|
call(AF_INET6, 'mangle', '-X', 'sshuttle-d-1025')
|
|
]
|
|
mock_ipt_chain_exists.reset_mock()
|
|
mock_ipt.reset_mock()
|
|
|
|
# IPV4
|
|
|
|
method.setup_firewall(
|
|
1025, 1027,
|
|
[(AF_INET, u'1.2.3.33')],
|
|
AF_INET,
|
|
[(AF_INET, 24, False, u'1.2.3.0', 0, 0),
|
|
(AF_INET, 32, True, u'1.2.3.66', 80, 80)],
|
|
True,
|
|
None,
|
|
None,
|
|
'0x01')
|
|
assert mock_ipt_chain_exists.mock_calls == [
|
|
call(AF_INET, 'mangle', 'sshuttle-m-1025'),
|
|
call(AF_INET, 'mangle', 'sshuttle-t-1025'),
|
|
call(AF_INET, 'mangle', 'sshuttle-d-1025')
|
|
]
|
|
assert mock_ipt.mock_calls == [
|
|
call(AF_INET, 'mangle', '-D', 'OUTPUT', '-j', 'sshuttle-m-1025'),
|
|
call(AF_INET, 'mangle', '-F', 'sshuttle-m-1025'),
|
|
call(AF_INET, 'mangle', '-X', 'sshuttle-m-1025'),
|
|
call(AF_INET, 'mangle', '-D', 'PREROUTING', '-j', 'sshuttle-t-1025'),
|
|
call(AF_INET, 'mangle', '-F', 'sshuttle-t-1025'),
|
|
call(AF_INET, 'mangle', '-X', 'sshuttle-t-1025'),
|
|
call(AF_INET, 'mangle', '-F', 'sshuttle-d-1025'),
|
|
call(AF_INET, 'mangle', '-X', 'sshuttle-d-1025'),
|
|
call(AF_INET, 'mangle', '-N', 'sshuttle-m-1025'),
|
|
call(AF_INET, 'mangle', '-F', 'sshuttle-m-1025'),
|
|
call(AF_INET, 'mangle', '-N', 'sshuttle-d-1025'),
|
|
call(AF_INET, 'mangle', '-F', 'sshuttle-d-1025'),
|
|
call(AF_INET, 'mangle', '-N', 'sshuttle-t-1025'),
|
|
call(AF_INET, 'mangle', '-F', 'sshuttle-t-1025'),
|
|
call(AF_INET, 'mangle', '-I', 'OUTPUT', '1', '-j', 'sshuttle-m-1025'),
|
|
call(AF_INET, 'mangle', '-I', 'PREROUTING', '1', '-j',
|
|
'sshuttle-t-1025'),
|
|
call(AF_INET, 'mangle', '-A', 'sshuttle-m-1025', '-j', 'MARK',
|
|
'--set-mark', '0x01', '--dest', u'1.2.3.33/32',
|
|
'-m', 'udp', '-p', 'udp', '--dport', '53'),
|
|
call(AF_INET, 'mangle', '-A', 'sshuttle-t-1025', '-j', 'TPROXY',
|
|
'--tproxy-mark', '0x01', '--dest', u'1.2.3.33/32',
|
|
'-m', 'udp', '-p', 'udp', '--dport', '53', '--on-port', '1027'),
|
|
call(AF_INET, 'mangle', '-A', 'sshuttle-t-1025', '-j', 'RETURN',
|
|
'-m', 'addrtype', '--dst-type', 'LOCAL'),
|
|
call(AF_INET, 'mangle', '-A', 'sshuttle-m-1025', '-j', 'RETURN',
|
|
'-m', 'addrtype', '--dst-type', 'LOCAL'),
|
|
call(AF_INET, 'mangle', '-A', 'sshuttle-d-1025',
|
|
'-j', 'MARK', '--set-mark', '0x01'),
|
|
call(AF_INET, 'mangle', '-A', 'sshuttle-d-1025', '-j', 'ACCEPT'),
|
|
call(AF_INET, 'mangle', '-A', 'sshuttle-t-1025', '-m', 'socket',
|
|
'-j', 'sshuttle-d-1025', '-m', 'tcp', '-p', 'tcp'),
|
|
call(AF_INET, 'mangle', '-A', 'sshuttle-t-1025', '-m', 'socket',
|
|
'-j', 'sshuttle-d-1025', '-m', 'udp', '-p', 'udp'),
|
|
call(AF_INET, 'mangle', '-A', 'sshuttle-m-1025', '-j', 'RETURN',
|
|
'--dest', u'1.2.3.66/32', '-m', 'tcp', '-p', 'tcp',
|
|
'--dport', '80:80'),
|
|
call(AF_INET, 'mangle', '-A', 'sshuttle-t-1025', '-j', 'RETURN',
|
|
'--dest', u'1.2.3.66/32', '-m', 'tcp', '-p', 'tcp',
|
|
'--dport', '80:80'),
|
|
call(AF_INET, 'mangle', '-A', 'sshuttle-m-1025', '-j', 'RETURN',
|
|
'--dest', u'1.2.3.66/32', '-m', 'udp', '-p', 'udp',
|
|
'--dport', '80:80'),
|
|
call(AF_INET, 'mangle', '-A', 'sshuttle-t-1025', '-j', 'RETURN',
|
|
'--dest', u'1.2.3.66/32', '-m', 'udp', '-p', 'udp',
|
|
'--dport', '80:80'),
|
|
call(AF_INET, 'mangle', '-A', 'sshuttle-m-1025', '-j', 'MARK',
|
|
'--set-mark', '0x01', '--dest', u'1.2.3.0/24',
|
|
'-m', 'tcp', '-p', 'tcp'),
|
|
call(AF_INET, 'mangle', '-A', 'sshuttle-t-1025', '-j', 'TPROXY',
|
|
'--tproxy-mark', '0x01', '--dest', u'1.2.3.0/24',
|
|
'-m', 'tcp', '-p', 'tcp', '--on-port', '1025'),
|
|
call(AF_INET, 'mangle', '-A', 'sshuttle-m-1025', '-j', 'MARK',
|
|
'--set-mark', '0x01', '--dest', u'1.2.3.0/24',
|
|
'-m', 'udp', '-p', 'udp'),
|
|
call(AF_INET, 'mangle', '-A', 'sshuttle-t-1025', '-j', 'TPROXY',
|
|
'--tproxy-mark', '0x01', '--dest', u'1.2.3.0/24',
|
|
'-m', 'udp', '-p', 'udp', '--on-port', '1025')
|
|
]
|
|
mock_ipt_chain_exists.reset_mock()
|
|
mock_ipt.reset_mock()
|
|
|
|
method.restore_firewall(1025, AF_INET, True, None, None)
|
|
assert mock_ipt_chain_exists.mock_calls == [
|
|
call(AF_INET, 'mangle', 'sshuttle-m-1025'),
|
|
call(AF_INET, 'mangle', 'sshuttle-t-1025'),
|
|
call(AF_INET, 'mangle', 'sshuttle-d-1025')
|
|
]
|
|
assert mock_ipt.mock_calls == [
|
|
call(AF_INET, 'mangle', '-D', 'OUTPUT', '-j', 'sshuttle-m-1025'),
|
|
call(AF_INET, 'mangle', '-F', 'sshuttle-m-1025'),
|
|
call(AF_INET, 'mangle', '-X', 'sshuttle-m-1025'),
|
|
call(AF_INET, 'mangle', '-D', 'PREROUTING', '-j', 'sshuttle-t-1025'),
|
|
call(AF_INET, 'mangle', '-F', 'sshuttle-t-1025'),
|
|
call(AF_INET, 'mangle', '-X', 'sshuttle-t-1025'),
|
|
call(AF_INET, 'mangle', '-F', 'sshuttle-d-1025'),
|
|
call(AF_INET, 'mangle', '-X', 'sshuttle-d-1025')
|
|
]
|
|
mock_ipt_chain_exists.reset_mock()
|
|
mock_ipt.reset_mock()
|