2599aef3bf
As a default, netaddr.valid_ipv4() uses the "aton" rule for its validation, so valid_ipv4('2') and valid_ipv4('1.2.3') returns True. It may cause unexpected behaviors. This commit replaces netaddr.valid_ipv4() to ryu.lib.ip.valid_ipv4(), which is wrapper of netaddr.valid_ipv4(), and use "pton" rule in the method. So, address representation like '2' or '1.2.3' will be rejected. Signed-off-by: Satoshi Fujimoto <satoshi.fujimoto7@gmail.com>
225 lines
7.2 KiB
Python
225 lines
7.2 KiB
Python
# Copyright (C) 2013 Nippon Telegraph and Telephone Corporation.
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# Copyright (C) 2013 YAMAMOTO Takashi <yamamoto at valinux co jp>
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import logging
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import os
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from ryu.lib import ip
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# We don't bother to use cfg.py because monkey patch needs to be
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# called very early. Instead, we use an environment variable to
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# select the type of hub.
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HUB_TYPE = os.getenv('RYU_HUB_TYPE', 'eventlet')
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LOG = logging.getLogger('ryu.lib.hub')
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if HUB_TYPE == 'eventlet':
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import eventlet
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# HACK:
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# sleep() is the workaround for the following issue.
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# https://github.com/eventlet/eventlet/issues/401
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eventlet.sleep()
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import eventlet.event
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import eventlet.queue
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import eventlet.semaphore
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import eventlet.timeout
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import eventlet.wsgi
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from eventlet import websocket
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import greenlet
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import ssl
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import socket
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import traceback
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getcurrent = eventlet.getcurrent
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patch = eventlet.monkey_patch
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sleep = eventlet.sleep
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listen = eventlet.listen
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connect = eventlet.connect
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def spawn(*args, **kwargs):
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raise_error = kwargs.pop('raise_error', False)
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def _launch(func, *args, **kwargs):
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# Mimic gevent's default raise_error=False behaviour
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# by not propagating an exception to the joiner.
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try:
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return func(*args, **kwargs)
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except TaskExit:
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pass
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except BaseException as e:
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if raise_error:
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raise e
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# Log uncaught exception.
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# Note: this is an intentional divergence from gevent
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# behaviour; gevent silently ignores such exceptions.
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LOG.error('hub: uncaught exception: %s',
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traceback.format_exc())
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return eventlet.spawn(_launch, *args, **kwargs)
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def spawn_after(seconds, *args, **kwargs):
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raise_error = kwargs.pop('raise_error', False)
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def _launch(func, *args, **kwargs):
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# Mimic gevent's default raise_error=False behaviour
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# by not propagating an exception to the joiner.
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try:
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return func(*args, **kwargs)
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except TaskExit:
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pass
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except BaseException as e:
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if raise_error:
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raise e
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# Log uncaught exception.
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# Note: this is an intentional divergence from gevent
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# behaviour; gevent silently ignores such exceptions.
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LOG.error('hub: uncaught exception: %s',
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traceback.format_exc())
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return eventlet.spawn_after(seconds, _launch, *args, **kwargs)
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def kill(thread):
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thread.kill()
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def joinall(threads):
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for t in threads:
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# This try-except is necessary when killing an inactive
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# greenthread.
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try:
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t.wait()
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except TaskExit:
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pass
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Queue = eventlet.queue.LightQueue
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QueueEmpty = eventlet.queue.Empty
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Semaphore = eventlet.semaphore.Semaphore
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BoundedSemaphore = eventlet.semaphore.BoundedSemaphore
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TaskExit = greenlet.GreenletExit
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class StreamServer(object):
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def __init__(self, listen_info, handle=None, backlog=None,
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spawn='default', **ssl_args):
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assert backlog is None
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assert spawn == 'default'
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if ip.valid_ipv6(listen_info[0]):
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self.server = eventlet.listen(listen_info,
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family=socket.AF_INET6)
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elif os.path.isdir(os.path.dirname(listen_info[0])):
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# Case for Unix domain socket
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self.server = eventlet.listen(listen_info[0],
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family=socket.AF_UNIX)
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else:
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self.server = eventlet.listen(listen_info)
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if ssl_args:
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def wrap_and_handle(sock, addr):
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ssl_args.setdefault('server_side', True)
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handle(ssl.wrap_socket(sock, **ssl_args), addr)
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self.handle = wrap_and_handle
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else:
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self.handle = handle
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def serve_forever(self):
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while True:
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sock, addr = self.server.accept()
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spawn(self.handle, sock, addr)
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class StreamClient(object):
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def __init__(self, addr, timeout=None, **ssl_args):
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assert ip.valid_ipv4(addr[0]) or ip.valid_ipv6(addr[0])
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self.addr = addr
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self.timeout = timeout
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self.ssl_args = ssl_args
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self._is_active = True
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def connect(self):
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try:
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if self.timeout is not None:
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client = socket.create_connection(self.addr,
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timeout=self.timeout)
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else:
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client = socket.create_connection(self.addr)
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except socket.error:
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return None
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if self.ssl_args:
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client = ssl.wrap_socket(client, **self.ssl_args)
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return client
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def connect_loop(self, handle, interval):
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while self._is_active:
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sock = self.connect()
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if sock:
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handle(sock, self.addr)
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sleep(interval)
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def stop(self):
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self._is_active = False
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class LoggingWrapper(object):
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def write(self, message):
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LOG.info(message.rstrip('\n'))
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class WSGIServer(StreamServer):
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def serve_forever(self):
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self.logger = LoggingWrapper()
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eventlet.wsgi.server(self.server, self.handle, self.logger)
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WebSocketWSGI = websocket.WebSocketWSGI
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Timeout = eventlet.timeout.Timeout
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class Event(object):
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def __init__(self):
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self._ev = eventlet.event.Event()
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self._cond = False
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def _wait(self, timeout=None):
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while not self._cond:
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self._ev.wait()
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def _broadcast(self):
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self._ev.send()
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# Since eventlet Event doesn't allow multiple send() operations
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# on an event, re-create the underlying event.
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# Note: _ev.reset() is obsolete.
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self._ev = eventlet.event.Event()
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def is_set(self):
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return self._cond
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def set(self):
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self._cond = True
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self._broadcast()
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def clear(self):
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self._cond = False
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def wait(self, timeout=None):
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if timeout is None:
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self._wait()
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else:
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try:
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with Timeout(timeout):
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self._wait()
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except Timeout:
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pass
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return self._cond
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