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from functools import partial
from multiprocessing.dummy import Pool as ThrPool
from subprocess import check_call, check_output, STDOUT
import multiprocessing
import os
import time
import pytest
# 10.0.1.0/24 (br-web) -- web, squid, inetd, gw
# 10.0.2.0/24 (br-tank) -- tank, openwrt
# 10.0.8.0/24 (br-txrx) -- gw, openwrt
BR = {
'10.0.1': 'web',
'10.0.8': 'txrx',
'10.0.2': 'tank',
}
GW = {
'web': '10.0.1.1',
'txrx': '10.0.8.1',
'tank': '10.0.2.123',
}
SLEEPING_BEAST = 'sleep 3600'
DOCKER_CMD = os.environ.get('DOCKER_CMD', '/usr/bin/docker')
PIPEWORK_CMD = os.environ.get('PIPEWORK_CMD', '/usr/bin/pipework')
class VM(object):
def __init__(self, name, tag, ip4=None, cmd='', docker_opt=''):
self.docker = DOCKER_CMD
self.pipework = PIPEWORK_CMD
self.netns = '/var/run/netns'
self.dns = '8.8.8.8'
self.name, self.tag = name, tag
self.cmd, self.docker_opt = cmd, docker_opt
if ip4:
self.ip4 = ip4
self.sha = self.output('sudo docker run --detach --dns {dns} --name {name} --hostname {name} {docker_opt} {tag} {cmd}')
self.pid = int(self.output('docker inspect -f {{{{.State.Pid}}}} {sha}'))
if not os.path.exists(self.netns):
self.call('sudo mkdir {netns}')
self.call('sudo ln -sf /proc/{pid}/ns/net {netns}/{name}')
self.net()
while cmd != SLEEPING_BEAST and 'LISTEN' not in self.do('netstat -ltn'):
time.sleep(0.1)
def net(self):
self.net_noext()
self.net_br()
def net_br(self):
self.net_br_gw()
def net_noext(self):
self.netcall('ip link set dev eth0 down')
self.netcall('ip route replace unreachable {dns}/32')
def net_br_gw(self):
self.call('sudo {pipework} br-{br} -i {intif} -l {vethif} {name} {ip4}/24@{gw4}')
def net_br_nogw(self):
self.call('sudo {pipework} br-{br} -i {intif} -l {vethif} {name} {ip4}/24')
@property
def br(self):
return BR[self.ip4.rsplit('.', 1)[0]]
@property
def gw4(self):
return GW[self.br]
@property
def intif(self):
return {'web': 'ethw', 'tank': 'etht', 'txrx': 'ethx'}[self.br]
@property
def vethif(self):
return ('v' + self.intif + self.name)[:15] # IFNAMSIZ 16
def assert_good_death(self):
pass
def close(self):
if hasattr(self, 'sha'):
self.call('sudo docker stop --time 1 {sha}')
self.assert_good_death()
if not getattr(self, 'preserve_root', False):
self.call('sudo docker rm {sha}')
del self.sha
def fmt(self, cmd):
ctx = self.__dict__.copy()
for i in xrange(len(dir(self))):
try:
ret = cmd.format(**ctx).split()
break
except KeyError, e:
key = e.args[0]
ctx[key] = getattr(self, key)
return ret
def output(self, cmd, **kwargs):
return check_output(self.fmt(cmd), **kwargs)
def logs(self, since=None):
out = self.output('sudo docker logs {sha}', stderr=STDOUT)
out = [_.split(None, 1) for _ in out.split('\n')]
out = [(float(_[0]), _[1]) for _ in out if len(_) == 2 and _[0][:10].isdigit()]
if since is not None:
out = [_ for _ in out if _[0] >= since]
return out
def call(self, cmd):
check_call(self.fmt(cmd))
def do(self, cmd):
return self.output('sudo docker exec {sha} ' + cmd)
def netcall(self, cmd):
return self.output('sudo ip netns exec {name} ' + cmd)
def lsfd(self):
out = self.output('sudo lsof -p {pid} -F f')
out = [int(_[1:]) for _ in out.split() if _[0] == 'f' and _[1:].isdigit()]
assert len(out) > 0
return out
class WebVM(VM):
def __init__(self):
VM.__init__(self, 'web', 'redsocks/web', '10.0.1.80')
class InetdVM(VM):
def __init__(self):
VM.__init__(self, 'inetd', 'redsocks/inetd', '10.0.1.13')
class SquidVM(VM):
def __init__(self, no):
VM.__init__(self, 'squid-%d' % no, 'redsocks/squid', '10.0.1.%d' % no,
docker_opt='--ulimit nofile=65535:65535',
cmd='/etc/squid3/squid-%d.conf' % no)
def net(self):
self.net_br_nogw()
self.netcall('ip route replace 10.0.0.0/16 via 10.0.1.1')
class DanteVM(VM):
def __init__(self, no):
VM.__init__(self, 'dante-%d' % no, 'redsocks/dante', '10.0.1.%d' % (180 + no),
cmd='/etc/danted-%d.conf' % (1080 + no))
def net(self):
self.net_br_nogw()
self.netcall('ip route replace 10.0.0.0/16 via 10.0.1.1')
class GwVM(VM):
def __init__(self):
VM.__init__(self, 'gw', 'ubuntu:14.04', cmd=SLEEPING_BEAST)
def net_br(self):
self.ip4 = '10.0.1.1'
self.net_br_nogw()
self.ip4 = '10.0.8.1'
self.net_br_nogw()
del self.ip4
self.netcall('ip route replace unreachable 10.0.2.0/24')
self.netcall('iptables -A FORWARD --destination 10.0.1.66/32 -j DROP')
class TankVM(VM):
def __init__(self, no):
assert 1 <= no <= 100
VM.__init__(self, 'tank%d' % no, 'redsocks/tank', '10.0.2.%d' % no, cmd=SLEEPING_BEAST)
class RegwVM(VM):
def __init__(self):
kw = {}
self.debug = os.environ.get('DEBUG_TEST', '')
if self.debug:
self.preserve_root = True
if self.debug != 'logs':
kw['cmd'] = {
'valgrind': 'valgrind --leak-check=full --show-leak-kinds=all /usr/local/sbin/redsocks -c /usr/local/etc/redsocks.conf',
'strace': 'strace -ttt /usr/local/sbin/redsocks -c /usr/local/etc/redsocks.conf',
}[self.debug]
VM.__init__(self, 'regw', 'redsocks/regw', **kw)
def net_br(self):
self.ip4 = '10.0.2.123'
self.net_br_nogw()
self.ip4 = '10.0.8.123'
self.net_br_gw()
del self.ip4
for t in TANKS.values():
self.netcall('iptables -t nat -A PREROUTING --source 10.0.2.%d/32 --dest 10.0.1.0/24 -p tcp -j REDIRECT --to-port %d' % (t, 12340 + t - TANKS_BASE))
def assert_good_death(self):
out = self.output('sudo docker logs {sha}', stderr=STDOUT)
assert 'redsocks goes down' in out and 'There are connected clients during shutdown' not in out
assert self.debug != 'valgrind' or 'no leaks are possible' in out
CPU = object()
MAX = object()
def pmap(l, j=MAX):
#return map(lambda x: x(), l)
if j is MAX:
j = len(l)
elif j is CPU:
j = multiprocessing.cpu_count()
p = ThrPool(j)
try:
return p.map(lambda x: x(), l, chunksize=1)
finally:
p.close()
p.join()
TANKS_BASE = 10
TANKS = {
'connect_none': TANKS_BASE + 0,
'connect_basic': TANKS_BASE + 1,
'connect_digest': TANKS_BASE + 2,
'socks5_none': TANKS_BASE + 3,
'socks5_auth': TANKS_BASE + 4,
'connect_nopass': TANKS_BASE + 5,
'connect_baduser': TANKS_BASE + 6,
'connect_badpass': TANKS_BASE + 7,
'socks5_nopass': TANKS_BASE + 8,
'socks5_baduser': TANKS_BASE + 9,
'socks5_badpass': TANKS_BASE + 10,
'httperr_connect_nopass': TANKS_BASE + 11,
'httperr_connect_baduser': TANKS_BASE + 12,
'httperr_connect_badpass': TANKS_BASE + 13,
'httperr_connect_digest': TANKS_BASE + 14,
'httperr_proxy_refuse': TANKS_BASE + 15,
'httperr_proxy_timeout': TANKS_BASE + 16,
}
class _Network(object):
def __init__(self):
assert os.path.exists(PIPEWORK_CMD)
running = check_output('sudo docker ps -q'.split()).split()
assert running == []
names = check_output('sudo docker ps -a --format {{.Names}}'.split()).split()
assert 'regw' not in names
vm = [
GwVM,
WebVM,
InetdVM,
RegwVM,
partial(SquidVM, 8),
partial(SquidVM, 9),
partial(DanteVM, 0),
partial(DanteVM, 1),
]
for t in TANKS.values():
vm.append(partial(TankVM, t))
self.vm = {_.name: _ for _ in pmap(vm, j=CPU)} # pmap saves ~5 seconds
def close(self):
check_output('sudo docker ps'.split())
pmap([_.close for _ in self.vm.values()]) # pmap saves ~7 seconds
@pytest.fixture(scope="session")
def net(request):
n = _Network()
request.addfinalizer(n.close)
return n
def pytest_addoption(parser):
parser.addoption('--vmdebug', action='store_true', help='run `test_debug` test')
def pytest_cmdline_preparse(args):
if '--vmdebug' in args:
args[:] = ['-k', 'test_vmdebug'] + args
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