FreeBSDAdmin/VPN/mpd-nsupdate-up.sh

#!/usr/local/bin/bash
# MPD Interface Up
#
# Douglas Thrift
#
# $Id$

shopt -s extglob

root=`dirname $0`
interface=`grep -E '^(pptp|ng)[0-9]$' <<<$1`
local_ip=`grep -E '^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$' <<<$3`
remote_ip=`grep -E '^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$' <<<$4`
authname=$5

function usage()
{
        echo -e "Usage: `basename $0` \e[1minterface\e[0m inet \e[1mlocal-ip remote-ip authname\e[0m [dns1 \e[1mserver-ip\e[0m] [dns2 \e[1mserver-ip\e[0m]"
        exit 1
}

for (( index = 6; index <= $#; ++index )); do
        case $(eval "echo \"\${$index}\"") in
        (dns@(1|2))
                eval "declare \${$index}=\$(grep -E '^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$' <<<\${$((++index))})"
                if eval "[[ -z \$$(eval "echo \${$((index - 1))}") ]]"; then
                        usage
                fi
                ;;
        (*)
                usage
                ;;
        esac
done

if [[ -z $interface ]] || [[ $2 != inet ]] || [[ -z $local_ip ]] || [[ -z $remote_ip ]] || [[ -z $authname ]]; then
        usage
fi

if grep -Eq '^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.4$' <<<$remote_ip; then
        hostname='unplugged.douglasthrift.net.'
else
        hostname=`sed -E 's/^[0-9]{1,3}\.[0-9]{1,3}\.([0-9]{1,3})\.([0-9]{1,3})$/vpn-\1-\2.douglasthrift.net./' <<<$remote_ip`
fi

reverse=`sed -E 's/^([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})$/\4.\3.\2.\1.in-addr.arpa./' <<<$remote_ip`

source $root/mpd-nsupdate-common.sh

nsupdate <<EOF
key $name $secret
update delete $hostname IN A
update add $hostname 300 IN A $remote_ip
send
update delete $reverse IN PTR
update add $reverse 300 IN PTR $hostname
send
EOF

echo $hostname $reverse > ~/.mpd-nsupdate.$interface
Revision:	856
Committed:	2006-08-08T03:28:50-07:00 (18 years, 10 months ago) by douglas
Content type:	text/x-sh
File size:	1587 byte(s)
Log Message:	Woo!
#	Content
1	#!/usr/local/bin/bash
2	# MPD Interface Up
3	#
4	# Douglas Thrift
5	#
6	# $Id$
7
8	shopt -s extglob
9
10	root=`dirname $0`
11	interface=`grep -E '^(pptp\|ng)[0-9]$' <<<$1`
12	local_ip=`grep -E '^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$' <<<$3`
13	remote_ip=`grep -E '^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$' <<<$4`
14	authname=$5
15
16	function usage()
17	{
18	echo -e "Usage: `basename $0` \e[1minterface\e[0m inet \e[1mlocal-ip remote-ip authname\e[0m [dns1 \e[1mserver-ip\e[0m] [dns2 \e[1mserver-ip\e[0m]"
19	exit 1
20	}
21
22	for (( index = 6; index <= $#; ++index )); do
23	case $(eval "echo \"\${$index}\"") in
24	(dns@(1\|2))
25	eval "declare \${$index}=\$(grep -E '^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$' <<<\${$((++index))})"
26	if eval "[[ -z \$$(eval "echo \${$((index - 1))}") ]]"; then
27	usage
28	fi
29	;;
30	(*)
31	usage
32	;;
33	esac
34	done
35
36	if [[ -z $interface ]] \|\| [[ $2 != inet ]] \|\| [[ -z $local_ip ]] \|\| [[ -z $remote_ip ]] \|\| [[ -z $authname ]]; then
37	usage
38	fi
39
40	if grep -Eq '^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.4$' <<<$remote_ip; then
41	hostname='unplugged.douglasthrift.net.'
42	else
43	hostname=`sed -E 's/^[0-9]{1,3}\.[0-9]{1,3}\.([0-9]{1,3})\.([0-9]{1,3})$/vpn-\1-\2.douglasthrift.net./' <<<$remote_ip`
44	fi
45
46	reverse=`sed -E 's/^([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})$/\4.\3.\2.\1.in-addr.arpa./' <<<$remote_ip`
47
48	source $root/mpd-nsupdate-common.sh
49
50	nsupdate <<EOF
51	key $name $secret
52	update delete $hostname IN A
53	update add $hostname 300 IN A $remote_ip
54	send
55	update delete $reverse IN PTR
56	update add $reverse 300 IN PTR $hostname
57	send
58	EOF
59
60	echo $hostname $reverse > ~/.mpd-nsupdate.$interface