.. _fbf.plugs.extra.dns:

dns
~~~

.. automodule:: fbf.plugs.extra.dns
        :show-inheritance:
        :members:
        :undoc-members:

CODE
----

    ::

        # fbf/plugs/socket/dns.py
        #
        #
        
        """ do a fqdn loopup. """
        
.. _fbf.plugs.extra.dns_fbf_imports:

fbf imports
--------------

    ::

        
        from fbf.lib.commands import cmnds
        from fbf.lib.examples import examples
        
.. _fbf.plugs.extra.dns_basic_imports:

basic imports
----------------

    ::

        
        from socket import gethostbyname
        from socket import getfqdn
        import re
        
.. _fbf.plugs.extra.dns_dns_command:

dns command
--------------

    ::

        
        def handle_dns(bot, event):
            """ arguments: <ip>|<hostname> - do a dns lookup. """
            if not event.rest: event.missing("<ip>|<hostname>") ; return
            query = event.rest.strip()
            ippattern =   re.match(r"^([0-9]{1,3}\.){3}[0-9]{1,3}$", query)
            hostpattern = re.match(r"(\w+://)?(?P<hostname>\S+\.\w+)", query)
            if ippattern:
                try:
                    answer = getfqdn(ippattern.group(0))
                    event.reply("%(hostname)s is %(answer)s" % {"hostname": query, "answer": answer})
                except: event.reply("Couldn't lookup ip")
            elif hostpattern:
                try: 
                    answer = gethostbyname(hostpattern.group('hostname'))
                    event.reply("%(ip)s is %(answer)s" % {"ip": query, "answer": answer})
                except: event.reply("Couldn't look up the hostname")
            else: return
        
        cmnds.add("dns", handle_dns, ["OPER", "USER", "GUEST"])
        examples.add("dns", "resolve the ip or the hostname", "dns google.com")