49 lines
1.4 KiB
Python
49 lines
1.4 KiB
Python
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# Copyright (c) Twisted Matrix Laboratories.
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# See LICENSE for details.
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"""
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The parent class for all the SSH services. Currently implemented services
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are ssh-userauth and ssh-connection.
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Maintainer: Paul Swartz
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"""
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from __future__ import division, absolute_import
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from twisted.python import log
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class SSHService(log.Logger):
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name = None # this is the ssh name for the service
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protocolMessages = {} # these map #'s -> protocol names
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transport = None # gets set later
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def serviceStarted(self):
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"""
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called when the service is active on the transport.
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"""
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def serviceStopped(self):
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"""
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called when the service is stopped, either by the connection ending
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or by another service being started
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"""
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def logPrefix(self):
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return "SSHService %r on %s" % (self.name,
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self.transport.transport.logPrefix())
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def packetReceived(self, messageNum, packet):
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"""
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called when we receive a packet on the transport
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"""
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#print self.protocolMessages
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if messageNum in self.protocolMessages:
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messageType = self.protocolMessages[messageNum]
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f = getattr(self,'ssh_%s' % messageType[4:],
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None)
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if f is not None:
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return f(packet)
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log.msg("couldn't handle %r" % messageNum)
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log.msg(repr(packet))
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self.transport.sendUnimplemented()
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