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#!/usr/local/bin/bash |
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# Douglas Thrift |
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# |
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# Reverse |
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# |
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# $Id$ |
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|
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function usage() |
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{ |
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echo "Usage: `basename $0` [previous] hostname address" |
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exit 1 |
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} |
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|
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case $# in |
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(2) |
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if grep -Eq '^[-.a-z0-9]+$' <<<$1; then hostname=$1; else usage; fi |
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if grep -Eq '^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$' <<<$2; then address=$2; else usage; fi |
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;; |
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(3) |
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if grep -Eq '^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$' <<<$1; then previous=$1; else usage; fi |
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if grep -Eq '^[-.a-z0-9]+$' <<<$2; then hostname=$2; else usage; fi |
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if grep -Eq '^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$' <<<$3; then address=$3; else usage; fi |
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;; |
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(*) |
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usage |
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;; |
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esac |
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|
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function reverse() |
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{ |
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echo "`sed -Ee 's/^([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})$/\4.\3.\2.\1/' <<<$1`.in-addr.arpa" |
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} |
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|
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domainname=`reverse $address` |
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zonefile=master/$domainname |
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|
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if [[ -z $previous ]]; then |
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cat > $zonefile <<EOF |
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\$ORIGIN . |
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\$TTL 3600 ; 1 hour |
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$domainname IN SOA ns.douglasthrift.net. admin.douglasthrift.net. ( |
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`date +%Y%m%d`01 ; serial |
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7200 ; refresh (2 hours) |
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3600 ; retry (1 hour) |
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604800 ; expire (1 week) |
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3600 ; minimum (1 hour) |
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) |
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NS ns.douglasthrift.net. |
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PTR $hostname. |
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EOF |
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cat >> named.conf <<EOF |
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|
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# $hostname |
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zone "$domainname" { |
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type master; |
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file "$zonefile"; |
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}; |
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EOF |
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else |
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olddomainname=`reverse $previous` |
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oldzonefile=master/$olddomainname |
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sed -e "s/$olddomainname/$domainname/" -e "s/[0-9]{10} ; serial$/`date +%Y%m%d`01 ; serial/" $oldzonefile > $zonefile |
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sed -i '' -e "s/$olddomainname/$domainname/" named.conf |
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rm -f $oldzonefile |
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fi |
