FreeBSDAdmin/VPN/mpd-up.sh

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

shopt -s extglob

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
}

[[ $# -ne 5 ]] && [[ $# -ne 7 ]] && [[ $# -ne 9 ]] && usage

root=`dirname $0`

source $root/mpd-common.sh

declare -a dns

for (( index = 6; index <= $#; ++index )); do
        case $(eval "echo \"\${$index}\"") in
        (dns@(1|2))
                : $((++index))

                if [[ $(eval "echo \"\${$((index))}\"") =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
                        dns[${#dns}]=${BASH_REMATCH[0]}
                else
                        usage
                fi
                ;;
        (*)
                usage
                ;;
        esac
done

hostname=`host $remote_ip | sed -Ee 's/^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.in-addr.arpa domain name pointer ([a-z.-]+)/\1/p;d'`

if [[ -z $hostname ]]; then
        hostname=`sed -E 's/^[0-9]{1,3}\.[0-9]{1,3}\.([0-9]{1,3})\.([0-9]{1,3})$/vpn-\1-\2.douglasthrift.net./' <<<$remote_ip`
        reverse=`sed -E 's/^([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})$/\4.\3.\2.\1.in-addr.arpa./' <<<$remote_ip`
fi

key

nsupdate <<EOF
key $name $secret
update delete $hostname IN A
update add $hostname 300 IN A $remote_ip
send`if [[ -n $reverse ]]; then echo "
update delete $reverse IN PTR
update add $reverse 300 IN PTR $hostname
send"; fi`
EOF

echo $hostname $reverse > ~/.mpd-nsupdate.$interface
Revision:	1005
Committed:	2008-05-18T05:34:06-07:00 (17 years, 1 month ago) by douglas
Content type:	text/x-sh
File size:	1402 byte(s)
Log Message:	Changes!
#	User	Rev	Content
1	douglas	856	#!/usr/local/bin/bash
2			# MPD Interface Up
3			#
4			# Douglas Thrift
5			#
6			# $Id$
7
8			shopt -s extglob
9
10			function usage()
11			{
12			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]"
13			exit 1
14			}
15
16	douglas	1005	[[ $# -ne 5 ]] && [[ $# -ne 7 ]] && [[ $# -ne 9 ]] && usage
17
18			root=`dirname $0`
19
20			source $root/mpd-common.sh
21
22			declare -a dns
23
24	douglas	856	for (( index = 6; index <= $#; ++index )); do
25			case $(eval "echo \"\${$index}\"") in
26			(dns@(1\|2))
27	douglas	1005	: $((++index))
28
29			if [[ $(eval "echo \"\${$((index))}\"") =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
30			dns[${#dns}]=${BASH_REMATCH[0]}
31			else
32	douglas	856	usage
33			fi
34			;;
35			(*)
36			usage
37			;;
38			esac
39			done
40
41	douglas	859	hostname=`host $remote_ip \| sed -Ee 's/^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.in-addr.arpa domain name pointer ([a-z.-]+)/\1/p;d'`
42
43			if [[ -z $hostname ]]; then
44	douglas	856	hostname=`sed -E 's/^[0-9]{1,3}\.[0-9]{1,3}\.([0-9]{1,3})\.([0-9]{1,3})$/vpn-\1-\2.douglasthrift.net./' <<<$remote_ip`
45	douglas	859	reverse=`sed -E 's/^([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})$/\4.\3.\2.\1.in-addr.arpa./' <<<$remote_ip`
46	douglas	856	fi
47
48	douglas	1005	key
49	douglas	856
50			nsupdate <<EOF
51			key $name $secret
52			update delete $hostname IN A
53			update add $hostname 300 IN A $remote_ip
54	douglas	859	send`if [[ -n $reverse ]]; then echo "
55	douglas	856	update delete $reverse IN PTR
56			update add $reverse 300 IN PTR $hostname
57	douglas	861	send"; fi`
58	douglas	856	EOF
59
60			echo $hostname $reverse > ~/.mpd-nsupdate.$interface