#!/usr/bin/env bash ## --- Variables (default Values) ## --- _zone_file_dir=/etc/bind/master #_zone_file_dir=/root/tmp/master _serial_new=`date +%Y%m%d01` _zone_file_suffix=zone ## --- ## --- End: Variables (default Values) ## --- some functions ## --- echononl(){ echo X\\c > /tmp/shprompt$$ if [ `wc -c /tmp/shprompt$$ | awk '{print $1}'` -eq 1 ]; then echo -e -n "$*\\c" 1>&2 else echo -e -n "$*" 1>&2 fi rm /tmp/shprompt$$ } fatal(){ echo "" echo -e "[ \033[31m\033[1mError\033[m ]: $*" echo "" echo -e "\t\033[31m\033[1mScript is canceled\033[m\033[m" echo "" exit 1 } warn (){ echo "" echo -e "\t[ \033[33m\033[1mWarning\033[m ]: $*" echo "" } info (){ echo "" echo -e "\t[ \033[33m\033[1mInfo\033[m ]: $*" echo "" } ok (){ echo "" echo -e "\t[ \033[36m\033[1mOk\033[m ]: $*" echo "" } error(){ echo "" echo -e "\t[ \033[31m\033[1mFehler\033[m ]: $*" echo "" } echo_ok() { echo -e "\033[75G[ \033[32mok\033[m ]" } echo_failed(){ echo -e "\033[75G[ \033[1;31mfailed\033[m ]" } echo_skipped() { echo -e "\033[75G[ \033[33m\033[1mskipped\033[m ]" } containsElement () { local e for e in "${@:2}"; do [[ "$e" == "$1" ]] && return 0; done return 1 } ## - Test of valid IPv4 Address ## - ## - Returns 0 if valid, > 0 otherwise ## - is_valid_ipv4() { local -a octets=( ${1//\./ } ) local RETURNVALUE=0 # return an error if the IP doesn't have exactly 4 octets [[ ${#octets[@]} -ne 4 ]] && return 1 for octet in ${octets[@]} do if [[ ${octet} =~ ^[0-9]{1,3}$ ]] then # shift number by 8 bits, anything larger than 255 will be > 0 ((RETURNVALUE += octet>>8 )) else # octet wasn't numeric, return error return 1 fi done return ${RETURNVALUE} } is_valid_ipv6() { local _ipv6=$1 if [ "$1" != "${1#[0-9a-f]*:}" ] \ && [ "$1" = "${1#*[^0-9a-f:]}" ] \ && [ "${1#*[0-9A-Fa-f][0-9A-Fa-f][0-9A-Fa-f][0-9A-Fa-f][0-9A-Fa-f]}" = "${1#*:*:*:*:*:*:*:*:*:}" ]; then return 0 else return 1 fi } ## --- ## --- END: functions echo "" echo -e "\033[32m--\033[m" echo "" echo "Insert IPv4-Address(es) to change TTL for." echo "" echo "For multiple IPv4 Addresses, insert a blank separated list" echo "" echo -e "Type \"\033[33mNone\033[m\" if no IPv4 address should be changed." echo "" IPv4_ADDRESS= _set_ipv4=true while [ "X$IPv4_ADDRESS" = "X" ]; do echononl "IPv4-Address: " read IPv4_ADDRESS ## - To lower case IPv4_ADDRESS=${IPv4_ADDRESS,,} if [ "X$IPv4_ADDRESS" = "X" ]; then echo -e "\n\t\033[33m\033[1mAn entry is required!\033[m\n" IPv4_ADDRESS="" continue fi if [ "$IPv4_ADDRESS" = "none" ];then _set_ipv4=false break fi for _addr in $IPv4_ADDRESS ; do if ! is_valid_ipv4 $_addr ; then echo -e "\n\t\033[33m\033[1m$_addr\033[m is NOT a valid IPv4 Address\n" IPv4_ADDRESS="" break fi done done echo "" echo -e "\033[32m--\033[m" echo "" echo "Insert IPv6-Address to change TTL for." echo "" echo "For multiple IPv6 Addresses, insert a blank separated list" echo "" echo -e "Type \"\033[33mNone\033[m\" if no IPv6 address should be changed." echo "" IPv6_ADDRESS= _set_ipv6=true while [ "X$IPv6_ADDRESS" = "X" ]; do echononl "IPv6-Address: " read IPv6_ADDRESS ## - To lower case IPv6_ADDRESS=${IPv6_ADDRESS,,} if [ "X$IPv6_ADDRESS" = "X" ]; then echo -e "\n\t\033[33m\033[1mAn entry is required!\033[m\n" IPv6_ADDRESS="" continue fi if [ "$IPv6_ADDRESS" = "none" ];then _set_ipv6=false break fi for _addr in $IPv6_ADDRESS ; do if ! is_valid_ipv6 $_addr ; then echo -e "\n\t\033[33m\033[1m$_addr\033[m is NOT a valid IPv6 Address\n" IPv6_ADDRESS="" break fi done done echo "" echo -e "\033[32m--\033[m" echo "" echo "Insert New TTL for the given IP-Address(es)" echo "" echo -e "[ \033[33mTIP\033[m ]: Choose a extraordinary Number (like 363 or 181), so you can" echo " identify it later very simple for setting back." echo "" TTL= regular_expression_number='^[0-9]+$' while [ "X$TTL" = "X" ]; do echononl "TTL: " read TTL if [ "X$TTL" = "X" ]; then echo -e "\n\t\033[33m\033[1mAn entry is required!\033[m\n" TTL="" continue fi if ! [[ $TTL =~ $regular_expression_number ]] ; then echo -e "\n\t\033[33m\033[1m$TTL\033[m is NOT a number\n" TTL="" continue elif [[ $TTL -lt "61" ]]; then echo -e "\n\t\033[33m\033[1m$TTL\033[m Choose a number greater than "60"\n" TTL="" continue fi done echo "" echo -e "\033[32m--\033[m" echo "" echo "Insert the directory, where your zone-files resides." echo "" echo "" ZONE_FILE_DIR= while [ "X$ZONE_FILE_DIR" = "X" ]; do echononl "Zone File Directory [$_zone_file_dir]: " read ZONE_FILE_DIR if [ "X$ZONE_FILE_DIR" = "X" ]; then ZONE_FILE_DIR=$_zone_file_dir fi if [ ! -d $ZONE_FILE_DIR ]; then echo -e "\n\tDirectory \033[33m\033[1m$ZONE_FILE_DIR\033[m does NOT exist!\n" ZONE_FILE_DIR= fi done echo "" echo -e "\033[32m--\033[m" echo "" echo "Insert the file-suffix of thr zone-files" echo "" echo "" ZONE_FILE_SUFFIX= echononl "Suffix of Zone Files [$_zone_file_suffix]: " read ZONE_FILE_SUFFIX if [ "X$ZONE_FILE_SUFFIX" = "X" ]; then ZONE_FILE_SUFFIX=$_zone_file_suffix fi if ! $_set_ipv6 && ! $_set_ipv4 ; then fatal "No IP-Adresses given to change TTL for.." fi echo "" echo -e "\033[32m--\033[m" echo "" echo "Ignore Hostnames containing \"-alt\" (as ww-alt.oopen.de or d-alt.mx.oopen.de)" echo "" echo "" OK= IGNORE_ALT_HOSTNAMES=false while [ "$OK" != "yes" -o "$OK" != "no" ] ; do echononl "Ignore Hostnames containing \"-alt\"? [yes/no]: " read OK ## - To lower case OK=${OK,,} if [ "X$OK" = "X" ]; then echo -e "\n\t\033[33m\033[1mAn entry is required!\033[m\n" OK="" continue fi if [ "$OK" = "yes" -o "$OK" = "no" ] ; then break else OK="" fi echo -e "\n\t\033[33m\033[1mWrong entry!\033[m\n" done [[ $OK = "yes" ]] && IGNORE_ALT_HOSTNAMES=true clear echo "" echo "" echo -e "\033[21G\033[32mChange TTL Settings\033[m" echo "" echo "" if $_set_ipv4 ; then echo "IPv4 Address(es)..................: $IPv4_ADDRESS" else echo -e "IPv4 Address(es)..................: \033[33mNone\033[m" fi if $_set_ipv6 ; then echo "IPv6 Address(es)..................: $IPv6_ADDRESS" else echo -e "IPv6 Address(es)..................: \033[33mNone\033[m" fi echo "" echo "New TTL...........................: $TTL" echo "" echo "Ignore hostnames containing \"-alt\": $IGNORE_ALT_HOSTNAMES" echo "" echo "Zone File Directory...............: $ZONE_FILE_DIR" echo "Zone File Suffix..................: $ZONE_FILE_SUFFIX" echo "" OK= while [ "$OK" != "yes" -a "$OK" != "no" ] ; do echononl "Parameters ok? [yes/no]: " read OK ## - To lower case OK=${OK,,} if [ "X$OK" = "X" ]; then echo -e "\n\t\033[33m\033[1mAn entry is required!\033[m\n" OK="" continue fi if [ "$OK" != "yes" -a "$OK" != "no" ] ; then OK="" else break fi echo -e "\n\t\033[33m\033[1mWrong entry!\033[m\n" done [[ $OK = "yes" ]] || fatal Repeat execution with different parameters cp -a $ZONE_FILE_DIR ${ZONE_FILE_DIR}.BAK-`date +%Y-%m-%d-%H%M` ipv4_addresses_arr=() for _ipv4_address in $IPv4_ADDRESS ; do containsElement "$_ipv4_address" "${ipv4_addresses_arr[@]}" && continue ipv4_addresses_arr+=("$_ipv4_address") done ipv6_addresses_arr=() for _ipv6_address in $IPv6_ADDRESS ; do containsElement "$_ipv6_address" "${ipv6_addresses_arr[@]}" && continue ipv6_addresses_arr+=("$_ipv6_address") done zonefiles_arr=() if $_set_ipv4 ; then for _ipv4_address in ${ipv4_addresses_arr[@]} ; do _zone_files_ipv4=`grep -l -e "$_ipv4_address" ${ZONE_FILE_DIR}/*.$ZONE_FILE_SUFFIX` if [ ${#zonefiles_arr[@]} -eq 0 ] ; then for _zone_file in $_zone_files_ipv4 ; do zonefiles_arr+=("$_zone_file") done else for _zone_file in $_zone_files_ipv4 ; do containsElement "$_zone_file" "${zonefiles_arr[@]}" && continue zonefiles_arr+=("$_zone_file") done fi done fi if $_set_ipv6 ; then for _ipv6_address in "${ipv6_addresses_arr[@]}" ; do _zone_files_ipv6=`grep -l -e "$_ipv6_address" ${ZONE_FILE_DIR}/*.$ZONE_FILE_SUFFIX` if [ ${#zonefiles_arr[@]} -eq 0 ] ; then for _zone_file in $_zone_files_ipv6 ; do zonefiles_arr+=("$_zone_file") done else for _zone_file in $_zone_files_ipv6 ; do containsElement "$_zone_file" ${zonefiles_arr[@]} && continue zonefiles_arr+=("$_zone_file") done fi done fi #for _val in "${zonefiles_arr[@]}" ; do # echo # echo -e "$_val" #done # #exit for zone_file in ${zonefiles_arr[@]} ; do echo -e "\n\tconverting $zone_file .." _replaced=false ## - calculate new serial ## - declare -i __serial=`grep -e "[0-9]\{10\}" $zone_file | grep serial | awk '{print$1}'` while [ ! $_serial_new -gt $__serial ]; do let _serial_new++ done if $_set_ipv4 ; then for _ipv4_address in "${ipv4_addresses_arr[@]}" ; do if grep -e "IN\s*A\s*$_ipv4_address" $zone_file > /dev/null 2>&1 ; then ## - setze neue ttl für ipv4 address ## - echononl "\t Set new TTL ($TTL) for IPv4 address $_ipv4_address .." if grep -e "$TTL\s*IN\s*A\s*$_ipv4_address" $zone_file > /dev/null 2>&1 ; then echo_skipped elif grep -e "\s\{1,\}[0-9]\{2,5\}\s\{1,\}IN\s\{1,\}A\s\{1,\}$_ipv4_address" $zone_file > /dev/null 2>&1 ; then echo_skipped warn "Another TTL is already set for that IP-Address in file \"`basename $zone_file`\"" else perl -i -n -p -e "s#IN\s+A\s+$_ipv4_address#$TTL IN A $_ipv4_address#" $zone_file > /dev/null 2>&1 if [ "$?" = "0" ]; then echo_ok _replaced=true else echo_failed error "Setting new TTL for $_ipv4_address in zone file \"$zone_file\" failed!" fi fi if $_replaced && $IGNORE_ALT_HOSTNAMES ; then echononl "\t Setting back hostnames containing \"-alt\".." perl -i -n -p -e "s#^(.+(-alt).*)\s+$TTL\s+IN\s+A\s+$_ipv4_address#\1 IN A $_ipv4_address#" $zone_file > /dev/null 2>&1 if [ "$?" = "0" ]; then echo_ok else echo_failed error "Setting back hostnames containing \"-alt\" for $_ipv4_address in zone file \"$zone_file\" failed!" fi fi fi done fi if $_set_ipv6 ; then for _ipv6_address in "${ipv6_addresses_arr[@]}" ; do if grep -e "IN\s*AAAA\s*$_ipv6_address" $zone_file > /dev/null 2>&1 ; then ## - setze neue ttl für ipv6 address ## - echononl "\t Set new TTL ($TTL) for IPv6 address $_ipv6_address .." if grep -e "$TTL\s*IN\s*AAAA\s*$_ipv6_address" $zone_file > /dev/null 2>&1 ; then echo_skipped elif grep -e "\s\{1,\}[0-9]\{2,5\}\s\{1,\}IN\s\{1,\}AAAA\s\{1,\}$_ipv6_address" $zone_file > /dev/null 2>&1 ; then echo_skipped warn "Another TTL is already set for that IP-Address in file \"`basename $zone_file`\"" else perl -i -n -p -e "s#IN\s+AAAA\s+$_ipv6_address#$TTL IN AAAA $_ipv6_address#" $zone_file > /dev/null 2>&1 if [ "$?" = "0" ]; then echo_ok _replaced=true else echo_failed error "Setting new TTL for $_ipv6_address in zone file \"$zone_file\" failed!" fi fi if $_replaced && $IGNORE_ALT_HOSTNAMES ; then echononl "\t Setting back hostnames containing \"-alt\".." perl -i -n -p -e "s#^(.+(-alt).*)\s+$TTL\s+IN\s+AAAA\s+$_ipv6_address#\1 IN A $_ipv6_address#" $zone_file > /dev/null 2>&1 if [ "$?" = "0" ]; then echo_ok else echo_failed error "Setting back hostnames containing \"-alt\" for $_ipv6_address in zone file \"$zone_file\" failed!" fi fi fi done fi ## - setze neue serial ## - echo "" echononl "\t Increase Serial for zone file \"`basename $zone_file`\"" if $_replaced ; then perl -i -n -p -e "s#^(\s*)\s$__serial(.*)#\1 $_serial_new\2#" $zone_file > /dev/null 2>&1 if [ "$?" = "0" ]; then echo_ok _replaced=false else echo_failed error "Increasing Serial for zone file \"`basename $zone_file`\" failed!" fi else echo_skipped fi done echo exit