59 lines
2.2 KiB
Python
59 lines
2.2 KiB
Python
#!/usr/bin/python
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# Copyright (c) 2008-2009 AG Projects
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# Author: Denis Bilenko
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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"""Port forwarder
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USAGE: twisted_portforward.py local_port remote_host remote_port"""
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import sys
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from twisted.internet import reactor
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from eventlet.twistedutil import join_reactor
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from eventlet.twistedutil.protocol import GreenClientCreator, SpawnFactory, UnbufferedTransport
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from eventlet import proc
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def forward(source, dest):
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try:
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while True:
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x = source.recv()
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if not x:
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break
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print 'forwarding %s bytes' % len(x)
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dest.write(x)
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finally:
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dest.loseConnection()
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def handler(local):
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client = str(local.getHost())
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print 'accepted connection from %s' % client
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remote = GreenClientCreator(reactor, UnbufferedTransport).connectTCP(remote_host, remote_port)
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a = proc.spawn(forward, remote, local)
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b = proc.spawn(forward, local, remote)
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proc.waitall([a, b], trap_errors=True)
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print 'closed connection to %s' % client
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try:
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local_port, remote_host, remote_port = sys.argv[1:]
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except ValueError:
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sys.exit(__doc__)
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local_port = int(local_port)
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remote_port = int(remote_port)
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reactor.listenTCP(local_port, SpawnFactory(handler))
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reactor.run()
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