Function ipt_chain_exists

firewall.py:31–39

(name)

def ipt_chain_exists(name):
    argv = ['iptables', '-t', 'nat', '-nL']
    p = ssubprocess.Popen(argv, stdout = ssubprocess.PIPE)
    for line in p.stdout:
        if line.startswith('Chain %s ' % name):
            return True
    rv = p.wait()
    if rv:
        raise Fatal('%r returned %d' % (argv, rv))


def ipt(*args):