/usr/lib/python2.7/dist-packages/zmq/auth/thread.py is in python-zmq 15.2.0-0ubuntu4.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 | """ZAP Authenticator in a Python Thread.
.. versionadded:: 14.1
"""
# Copyright (C) PyZMQ Developers
# Distributed under the terms of the Modified BSD License.
import logging
from threading import Thread
import zmq
from zmq.utils import jsonapi
from zmq.utils.strtypes import bytes, unicode, b, u
from .base import Authenticator
class AuthenticationThread(Thread):
"""A Thread for running a zmq Authenticator
This is run in the background by ThreadedAuthenticator
"""
def __init__(self, context, endpoint, encoding='utf-8', log=None, authenticator=None):
super(AuthenticationThread, self).__init__()
self.context = context or zmq.Context.instance()
self.encoding = encoding
self.log = log = log or logging.getLogger('zmq.auth')
self.authenticator = authenticator or Authenticator(context, encoding=encoding, log=log)
# create a socket to communicate back to main thread.
self.pipe = context.socket(zmq.PAIR)
self.pipe.linger = 1
self.pipe.connect(endpoint)
def run(self):
""" Start the Authentication Agent thread task """
self.authenticator.start()
zap = self.authenticator.zap_socket
poller = zmq.Poller()
poller.register(self.pipe, zmq.POLLIN)
poller.register(zap, zmq.POLLIN)
while True:
try:
socks = dict(poller.poll())
except zmq.ZMQError:
break # interrupted
if self.pipe in socks and socks[self.pipe] == zmq.POLLIN:
terminate = self._handle_pipe()
if terminate:
break
if zap in socks and socks[zap] == zmq.POLLIN:
self._handle_zap()
self.pipe.close()
self.authenticator.stop()
def _handle_zap(self):
"""
Handle a message from the ZAP socket.
"""
msg = self.authenticator.zap_socket.recv_multipart()
if not msg: return
self.authenticator.handle_zap_message(msg)
def _handle_pipe(self):
"""
Handle a message from front-end API.
"""
terminate = False
# Get the whole message off the pipe in one go
msg = self.pipe.recv_multipart()
if msg is None:
terminate = True
return terminate
command = msg[0]
self.log.debug("auth received API command %r", command)
if command == b'ALLOW':
addresses = [u(m, self.encoding) for m in msg[1:]]
try:
self.authenticator.allow(*addresses)
except Exception as e:
self.log.exception("Failed to allow %s", addresses)
elif command == b'DENY':
addresses = [u(m, self.encoding) for m in msg[1:]]
try:
self.authenticator.deny(*addresses)
except Exception as e:
self.log.exception("Failed to deny %s", addresses)
elif command == b'PLAIN':
domain = u(msg[1], self.encoding)
json_passwords = msg[2]
self.authenticator.configure_plain(domain, jsonapi.loads(json_passwords))
elif command == b'CURVE':
# For now we don't do anything with domains
domain = u(msg[1], self.encoding)
# If location is CURVE_ALLOW_ANY, allow all clients. Otherwise
# treat location as a directory that holds the certificates.
location = u(msg[2], self.encoding)
self.authenticator.configure_curve(domain, location)
elif command == b'TERMINATE':
terminate = True
else:
self.log.error("Invalid auth command from API: %r", command)
return terminate
def _inherit_docstrings(cls):
"""inherit docstrings from Authenticator, so we don't duplicate them"""
for name, method in cls.__dict__.items():
if name.startswith('_'):
continue
upstream_method = getattr(Authenticator, name, None)
if not method.__doc__:
method.__doc__ = upstream_method.__doc__
return cls
@_inherit_docstrings
class ThreadAuthenticator(object):
"""Run ZAP authentication in a background thread"""
def __init__(self, context=None, encoding='utf-8', log=None):
self.context = context or zmq.Context.instance()
self.log = log
self.encoding = encoding
self.pipe = None
self.pipe_endpoint = "inproc://{0}.inproc".format(id(self))
self.thread = None
def allow(self, *addresses):
self.pipe.send_multipart([b'ALLOW'] + [b(a, self.encoding) for a in addresses])
def deny(self, *addresses):
self.pipe.send_multipart([b'DENY'] + [b(a, self.encoding) for a in addresses])
def configure_plain(self, domain='*', passwords=None):
self.pipe.send_multipart([b'PLAIN', b(domain, self.encoding), jsonapi.dumps(passwords or {})])
def configure_curve(self, domain='*', location=''):
domain = b(domain, self.encoding)
location = b(location, self.encoding)
self.pipe.send_multipart([b'CURVE', domain, location])
def start(self):
"""Start the authentication thread"""
# create a socket to communicate with auth thread.
self.pipe = self.context.socket(zmq.PAIR)
self.pipe.linger = 1
self.pipe.bind(self.pipe_endpoint)
self.thread = AuthenticationThread(self.context, self.pipe_endpoint, encoding=self.encoding, log=self.log)
self.thread.start()
def stop(self):
"""Stop the authentication thread"""
if self.pipe:
self.pipe.send(b'TERMINATE')
if self.is_alive():
self.thread.join()
self.thread = None
self.pipe.close()
self.pipe = None
def is_alive(self):
"""Is the ZAP thread currently running?"""
if self.thread and self.thread.is_alive():
return True
return False
def __del__(self):
self.stop()
__all__ = ['ThreadAuthenticator']
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