157 lines
5.3 KiB
Bash
Executable File
157 lines
5.3 KiB
Bash
Executable File
#!/bin/sh
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GetZoneFileSerial() {
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if [ -f "$1" ]; then
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INSOASpec="^\s*\S\+\s\+\([0-9]*\s\)\?\s*IN\s\+SOA\s\+"
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FirstSOALineAndFollowing="/""$INSOASpec""/,\$!d;"
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RemoveComments=":a;s/;.*$//g;"
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RemoveLineBreaks=":a;N;\$!ba;s/\n//g;"
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SearchPrintSerial="s/""$INSOASpec""\S\+\s\+\S\+\s\+\((\s\)\?\s*\([0-9]*\).*/\3/i"
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ZoneSerial=$(sed -e "$FirstSOALineAndFollowing""$RemoveComments""$RemoveLineBreaks""$SearchPrintSerial" "$1")
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fi
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echo "${ZoneSerial:-0}"
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}
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InsertZoneToIncludeFile() {
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if [ ! -f "$3" ]; then
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echo "zone \"""$1""\" {" > "$3"
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echo " type master;" >> "$3"
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echo " file \"""$2""\";" >> "$3"
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echo "};" >> "$3"
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else
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sed -i "1i\
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zone \"""$1""\" {\n\
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type master;\n\
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file \"""$2""\";\n\
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};" "$3"
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fi
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}
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GetReverseZoneFileFromZone() {
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echo "db.""$(echo "$1" | awk -F. '{ printf $(NF-2);for(i=NF-3;i>0;--i) printf "."$i}')"
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}
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FillIPv4MissingBlocks() {
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echo "$1" | sed -ne 's/^\([^.]\+\)\.\(\([^.]\+\)\.\)\?\(\([^.]\+\)\.\)\?\([^.]\+\)$/\1.\3.\5.\6/p' | sed -r 's/\.\./\.0\./g;s/\.\./\.0\./g'
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}
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GetReverseIPv4Domains() {
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IPFilled="$(FillIPv4MissingBlocks "${1%/*}")"
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Mask="${1##*/}"
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Statics=$((Mask / 8))
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Filler=$((Mask % 8))
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RevDomain="$(echo "$IPFilled" | awk -F. '{for(i='"$Statics"';i>0;--i)printf "."$i}')"".in-addr.arpa."
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if [ $Filler -eq 0 ]; then
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echo "${RevDomain#.}"
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else
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Filler=$((8 - $Filler))
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Filler=$((1 << $Filler))
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Start=$(echo "$IPFilled" | awk -F. '{printf $'"$((Statics+1))"'}')
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Start=$((Start - Start % Filler))
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for Sub in $(seq $Start $((Start + Filler - 1))); do
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echo "$Sub""$RevDomain"
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done
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fi
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}
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FillIPv6Zeroes() {
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echo "$1" | awk -F: 'BEGIN {OFS=""}{ FillCount=9-NF; for(i=1;i<=NF;i++){if(length($i) == 0){if(i==NF) {$i="0000";} else {for(j=1;j<=FillCount;j++){$i=($i "0000");}}} else {$i=substr(("0000" $i), length($i)+1);}}; print}'
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}
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GetReverseIPv6Domains() {
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IPFilled="$(FillIPv6Zeroes "$(echo "${1%/*}" | awk '{print tolower($0)}')")"
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Mask="${1##*/}"
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Statics=$((Mask / 4))
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Filler=$((Mask % 4))
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RevDomain="$(echo "$IPFilled" | awk '{ for(i='"$Statics"';i>0;i--)x=x "." substr($0,i,1);}END{print x}')"".ip6.arpa."
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if [ $Filler -eq 0 ]; then
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echo "${RevDomain#.}"
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else
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Filler=$((4 - $Filler))
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Filler=$((1 << $Filler))
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Start="$(printf %d 0x"$(echo "$IPFilled" | awk 'BEGIN{FS=""}{printf $'"$((Statics+1))"'}')")"
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Start=$((Start - Start % Filler))
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for Sub in $(seq $Start $((Start + Filler - 1))); do
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echo "$(printf %x "$Sub")""$RevDomain"
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done
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fi
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}
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GetReverseDomains() {
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Subnet="$1"
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if IsValidIPv4Subnet "$Subnet"; then
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GetReverseIPv4Domains "$Subnet"
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elif IsValidIPv6Subnet "$Subnet"; then
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GetReverseIPv6Domains "$Subnet"
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fi
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}
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GetServernameSEDEntry() {
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CommunityName="$1"
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ServerName="$DNSSCRIPT_SERVER_NAME"
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if [ -z "${ServerName##*$CommunityName}" ]; then
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ServerName="\(""$ServerName"".\|""${ServerName%*.$CommunityName}""\)"
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else
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ServerName="\(""$ServerName"".\)"
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fi
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echo "$ServerName" | sed -r 's/\./\\\./g'
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}
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GetOwnGlueRecords() {
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ServerName="$DNSSCRIPT_SERVER_NAME"
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if [ -n "${ServerName##*$1}" ]; then
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ServerName="$ServerName""$1"
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fi
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ServerName="$ServerName""."
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sed -ne 's/^\s*'"$(GetServernameSEDEntry "$1")"'\(\s\+[Ii][Nn]\s\+\([Aa]\|[Aa]\{4\}\)\s\+.*\)$/'"$ServerName"'\2/p' "$2"
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}
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GetOwnHoods() {
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Entries="$(sed -ne "s/^\s*\(\S*\).*\s\+[Ii][Nn]\s\+[Nn][Ss]\s\+""$(GetServernameSEDEntry "$1")""\s*;\s*Subnets:\s*\([^;]*\)/\1 \3/p" "$2")"
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Entries="$(echo "$Entries" | sed -r 's/\s+/#/g')"
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echo "$Entries"
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}
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IsValidIPv4Subnet() {
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[ -n "$(echo "$1" | sed -e '/[^/]*\/\([12]\?[0-9]\|3[0-2]\)$/!d')" ] && IsValidIPv4 "${1%/*}"
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return $?
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}
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IsValidIPv4() {
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[ -n "$(echo "$1" | sed -e '/^\(\(25[0-5]\|\(2[0-4]\|1[0-9]\|[1-9]\)\?[0-9]\)\.\)\{0,3\}\(25[0-5]\|\(2[0-4]\|1[0-9]\|[1-9]\)\?[0-9]\)$/!d')" ]
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return $?
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}
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IsValidIPv6Subnet() {
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[ -n "$(echo "$1" | sed -e '/[^/]*\/\([1-9]\?[0-9]\|1\([01][0-9]\|2[0-8]\)\)$/!d')" ] && IsValidIPv6 "${1%/*}"
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return $?
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}
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IsValidIPv6() {
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Max8BlocksMax4Hex="/^\([0-9a-fA-F]\{0,4\}[:]\{1,2\}\)\{1,7\}[0-9a-fA-F]\{0,4\}$/!d;"
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MaxOneDoubleColon="/^.*::.*::.*$/d;"
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SingleColon8BlocksOrNoSingleColonBeginEnd="/^\(\([^:]\+:\)\{7\}[^:]\+\|\(\|[^:].*\)::\(\|.*[^:]\)\)$/!d"
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[ -n "$(echo "$1" | sed -e "$Max8BlocksMax4Hex""$MaxOneDoubleColon""$SingleColon8BlocksOrNoSingleColonBeginEnd")" ]
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return $?
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}
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IPv4IsInSubnet() {
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IPFilled="$(FillIPv4MissingBlocks "$1")"
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SubnetIPFilled="$(FillIPv4MissingBlocks "${2%/*}")"
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Mask="${2##*/}"
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Statics=$((Mask / 8))
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BlockMask=$((Mask % 8))
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IPStaticPart="$(echo "$IPFilled" | awk -F. '{for(i='"$Statics"';i>0;--i)printf "."$i}')"
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SubnetStaticPart="$(echo "$SubnetIPFilled" | awk -F. '{for(i='"$Statics"';i>0;--i) printf "."$i}')"
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AreEqual="$([ "$IPStaticPart" = "$SubnetStaticPart" ]; echo "$?")"
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if [ $AreEqual -eq 0 ] && [ $BlockMask -ne 0 ]; then
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BlockMask=$((8 - $BlockMask))
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BlockMask=$((-1 << $BlockMask))
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IPBlock=$(echo "$IPFilled" | awk -F. '{printf $'"$((Statics+1))"'}')
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SubnetBlock=$(echo "$SubnetIPFilled" | awk -F. '{printf $'"$((Statics+1))"'}')
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IPBlock=$(($IPBlock & $BlockMask))
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SubnetBlock=$(($SubnetBlock & $BlockMask))
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AreEqual="$([ $IPBlock -eq $SubnetBlock ]; echo "$?")"
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fi
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return $AreEqual
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}
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ReloadZone() {
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if [ $DNSSCRIPT_BIND_RELOAD_VER -eq 0 ]; then
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systemctl reload bind9
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elif [ $DNSSCRIPT_BIND_RELOAD_VER -eq 1 ]; then
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for Zone in $2; do
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rndc reload "$1" IN "$Zone"
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done
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else
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/etc/init.d/named reload
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fi
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} |