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#!/usr/bin/env python
"""
Test for sshd.py
"""
import unittest
from mininet.util import pexpect
from mininet.clean import sh
class testSSHD( unittest.TestCase ):
opts = [ '\(yes/no\)\?', 'refused', 'Welcome|\$|#', pexpect.EOF, pexpect.TIMEOUT ]
def connected( self, ip ):
"Log into ssh server, check banner, then exit"
# Note: this test will fail if "Welcome" is not in the sshd banner
# and '#'' or '$'' are not in the prompt
ssh = 'ssh -o StrictHostKeyChecking=no -i /tmp/ssh/test_rsa ' + ip
p = pexpect.spawn( ssh, timeout=5 )
while True:
index = p.expect( self.opts )
if index == 0:
print( p.match.group(0) )
p.sendline( 'yes' )
elif index == 1:
return False
elif index == 2:
p.sendline( 'exit' )
p.wait()
return True
else:
return False
def setUp( self ):
# create public key pair for testing
sh( 'rm -rf /tmp/ssh' )
sh( 'mkdir /tmp/ssh' )
sh( "ssh-keygen -t rsa -P '' -f /tmp/ssh/test_rsa" )
sh( 'cat /tmp/ssh/test_rsa.pub >> /tmp/ssh/authorized_keys' )
cmd = ( 'python -m mininet.examples.sshd -D '
'-o AuthorizedKeysFile=/tmp/ssh/authorized_keys '
'-o StrictModes=no -o UseDNS=no -u0' )
# run example with custom sshd args
self.net = pexpect.spawn( cmd )
self.net.expect( 'mininet>' )
def testSSH( self ):
"Verify that we can ssh into all hosts (h1 to h4)"
for h in range( 1, 5 ):
self.assertTrue( self.connected( '10.0.0.%d' % h ) )
def tearDown( self ):
self.net.sendline( 'exit' )
self.net.wait()
# remove public key pair
sh( 'rm -rf /tmp/ssh' )
if __name__ == '__main__':
unittest.main()
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