lantz
f0c726a42f
This helps with virtualenv although it can open up another security hole if you end up using an unexpected python interpreter. Overall it seems to make sense to err on the side of usability but it's good to be aware of security. However, for the remaining utility scripts that require python 2, we explicitly note this with #!/usr/bin/python2.
47 lines
1.1 KiB
Python
Executable File
47 lines
1.1 KiB
Python
Executable File
#!/usr/bin/env python
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"This example doesn't use OpenFlow, but attempts to run sshd in a namespace."
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import sys
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from mininet.node import Host
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from mininet.util import ensureRoot, waitListening
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from mininet.log import info, warn, output
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ensureRoot()
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timeout = 5
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info( "*** Creating nodes\n" )
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h1 = Host( 'h1' )
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root = Host( 'root', inNamespace=False )
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info( "*** Creating link\n" )
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h1.linkTo( root )
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info( h1 )
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info( "*** Configuring nodes\n" )
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h1.setIP( '10.0.0.1', 8 )
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root.setIP( '10.0.0.2', 8 )
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info( "*** Creating banner file\n" )
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f = open( '/tmp/%s.banner' % h1.name, 'w' )
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f.write( 'Welcome to %s at %s\n' % ( h1.name, h1.IP() ) )
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f.close()
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info( "*** Running sshd\n" )
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cmd = '/usr/sbin/sshd -o UseDNS=no -u0 -o "Banner /tmp/%s.banner"' % h1.name
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# add arguments from the command line
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if len( sys.argv ) > 1:
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cmd += ' ' + ' '.join( sys.argv[ 1: ] )
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h1.cmd( cmd )
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listening = waitListening( server=h1, port=22, timeout=timeout )
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if listening:
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output( "*** You may now ssh into", h1.name, "at", h1.IP(), '\n' )
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else:
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warn( "*** Warning: after %s seconds, %s is not listening on port 22"
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% ( timeout, h1.name ), '\n' )
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