Initial commit
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281
tools-bind/bind_set_new_serial.sh
Executable file
281
tools-bind/bind_set_new_serial.sh
Executable file
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#!/usr/bin/env bash
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# - Sets new serial and reloads zone
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# -
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# - Return (Exit) Codes:
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# - success:
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# - 0: Serial is replaced and Zone is reloaded
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# - error:
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# - 10: Invalid Hostname/Domain given
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# - 15: Hostname/Domain not supported
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# - 11: No zonefile found
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# - 12: Determin new Serial failed
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# - 13: Increasing Serial failed
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# - 14: Reloading Zone failed
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# - 99: Fatal error
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# -
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# - usage: ./nd_set_new_serial.sh <hostname|domain>
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# -
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# - example: ./nd_set_new_serial.sh a.mx.open.de
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# -
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## -- Variable definitions
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## --
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# - Bind configuration file containing zone definitions
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# -
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ZONE_CONF_FILE=/etc/bind/named.conf.local
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BIND_USER=bind
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BIND_GROUP=bind
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## --
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## -- End: Variable definitions
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## ***
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## *** Don't make changes after this line ***
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## ***
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## --- some functions
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## ---
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echononl(){
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echo X\\c > /tmp/shprompt$$
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if [ `wc -c /tmp/shprompt$$ | awk '{print $1}'` -eq 1 ]; then
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echo -e -n "$*\\c" 1>&2
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else
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echo -e -n "$*" 1>&2
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fi
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rm /tmp/shprompt$$
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}
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fatal(){
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echo ""
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echo -e "[ \033[31m\033[1mError\033[m ]: $*"
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echo ""
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echo -e "\t\033[31m\033[1mScript is canceled\033[m\033[m"
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echo ""
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exit 1
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}
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warn (){
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echo ""
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echo -e "\t[ \033[33m\033[1mWarning\033[m ]: $*"
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echo ""
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}
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info (){
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echo ""
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echo -e "\t[ \033[32m\033[1mInfo\033[m ]: $*"
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echo ""
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}
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ok (){
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echo ""
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echo -e "\t[ \033[36m\033[1mOk\033[m ]: $*"
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echo ""
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}
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error(){
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echo ""
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echo -e "\t[ \033[31m\033[1mFehler\033[m ]: $*"
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echo ""
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}
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echo_ok() {
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echo -e "\033[75G[ \033[32mok\033[m ]"
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}
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echo_failed(){
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echo -e "\033[75G[ \033[1;31mfailed\033[m ]"
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}
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echo_skipped() {
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echo -e "\033[75G[ \033[33m\033[1mskipped\033[m ]"
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}
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containsElement () {
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local e
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for e in "${@:2}"; do [[ "$e" == "$1" ]] && return 0; done
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return 1
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}
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## ---
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## --- END: functions
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# - Parameter "check" can be used, to test whether this script
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# - is accessable (e.g. from a script on a remote host)
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# -
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if [[ "$1" = "check" ]]; then
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echo "\$1: $1"
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exit 0
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fi
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host_name=$1
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echo ""
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# - Validate Syntax of given domain
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# -
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valid_domain_regex="^([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]{0,61}[a-zA-Z0-9])(\.([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]{0,61}[a-zA-Z0-9]))*$"
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echononl "\tValidate syntax of given domain.."
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if [[ $host_name =~ $valid_domain_regex ]]; then
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if [[ ! $host_name =~ \. ]]; then
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echo_failed
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error "Invalid hostname/domain \"$1\" given!"
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exit 10
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else
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echo_ok
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fi
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else
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echo_failed
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error "Invalid hostname/domain ($1) given!"
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exit 10
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fi
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# - Determin zone (domain)
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# -
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_failed=false
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_host_name=$host_name
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_tmp_host_name=$(echo ${_host_name//\./\\.})
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while ! grep -e "$_tmp_host_name" $ZONE_CONF_FILE > /dev/null 2>&1 ; do
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_host_name=${_host_name#*.}
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_tmp_host_name=$(echo ${_host_name//\./\\.})
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if [[ ! $_tmp_host_name =~ \. ]]; then
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_failed=true
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break
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fi
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done
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if $_failed ; then
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error "Given hostname/domain \"$1\" not supported by this nameserver!"
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else
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domain=$_host_name
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fi
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# - Determine zonefile (by reading bind configuration)
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# -
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_found=false
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declare -i _number=0
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regex_zone="^[[:space:]]*zone[[:space:]]+\"$_tmp_host_name\""
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regex_file="^[[:space:]]*file"
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while IFS='' read -r line || [[ -n "$line" ]] ; do
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if [[ $line =~ $regex_zone ]]; then
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_found=true
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fi
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if $_found ; then
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if [[ $line =~ $regex_file ]]; then
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zone_file=`echo $line | awk '{print$2}'`
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shopt -s extglob
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if [[ $zone_file =~ \; ]]; then
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zone_file=${zone_file%%*(\;)}
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fi
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if [[ $zone_file =~ ^\" ]]; then
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zone_file=${zone_file##*(\")}
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zone_file=${zone_file%%*(\")}
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fi
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shopt -u extglob
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let number++
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break
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fi
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fi
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done < $ZONE_CONF_FILE
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zone_file_dir=`dirname $zone_file`
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if [[ $number -eq 0 ]] ; then
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error "No Zonefile (master) found for domain \"$domain\" ."
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exit 11
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fi
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echononl "\tBackup existing directory containg zonefiles.."
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if [[ -d "$zone_file_dir" ]] ; then
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cp -a $zone_file_dir ${zone_file_dir}.BAK.`date +%Y-%m-%d-%H%M`
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if [[ $? -eq 0 ]]; then
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echo_ok
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else
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echo_failed
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echo ""
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exit 99
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fi
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else
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echo_failed
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error "Zonefile directory not found for domain \"$domain\" ."
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exit 99
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fi
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# - Determin new serial
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# -
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echononl "\tDetermin new serial.."
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_failed=false
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declare -i serial_new=`date +%Y%m%d01`
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serial_cur=`grep -e "^\s*[0-9]\{10\}" $zone_file | grep serial | awk '{print$1}'`
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if [[ $? -gt 0 ]] ; then
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_failed=true
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fi
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while [ ! $serial_new -gt $serial_cur ]; do
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let serial_new++
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done
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if [[ $? -gt 0 ]] ; then
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_failed=true
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fi
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if $_failed ; then
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echo_failed
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error "Determin Serial failed!"
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exit 12
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else
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echo_ok
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fi
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# - Replace serial with the new one
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# -
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echononl "\tIncrease serial for zone file \"`basename $zone_file`\".."
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perl -i -n -p -e "s#^(\s*)\s$serial_cur(.*)#\1 $serial_new\2#" $zone_file > /dev/null 2>&1
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if [[ $? -eq 0 ]]; then
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echo_ok
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else
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echo_failed
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error "Increasing Serial failed!"
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exit 13
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fi
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echo ""
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echononl "\tCorrect Owner for $zone_file .."
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chown $BIND_USER:$BIND_GROUP $zone_file
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if [[ $? -eq 0 ]] ; then
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echo_ok
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else
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echo_failed
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exit 99
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fi
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echononl "\tCorrect permissions on $zone_file .."
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chmod 644 $zone_file
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if [[ $? -eq 0 ]] ; then
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echo_ok
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else
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echo_failed
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exit 99
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fi
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# - Reload Zone
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# -
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echononl "\tReloading zone \"$domain\".."
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rndc reload $domain > /dev/null 2>&1
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if [[ $? -eq 0 ]]; then
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echo_ok
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info "Serial increased and zone reloaded ($domain)"
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exit 0
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else
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echo_failed
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error "Increasing Serial failed!"
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exit 13
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fi
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echo
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exit 99
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