275 lines
11 KiB
Bash
275 lines
11 KiB
Bash
#!/bin/sh
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# SPDX-License-Identifier: GPL-3.0
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#
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# freifunk-franken dns-scipts (c) 2016 mayosemmel
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# (c) 2020-2021 Fabian Bläse
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# (c) 2021 Blackyfff
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# exit script when command fails
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set -e
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export DNSSCRIPT_VERSION="0.8.1"
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. /etc/ffdns/community.conf
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. /etc/ffdns/local.conf
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export DNSSCRIPT_CONTACT_EMAIL
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export DNSSCRIPT_SERVER_NAME
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export DNSSCRIPT_BIND_RELOAD_VER
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cd /usr/lib/ffdns/
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. ./dns-functions.sh
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MasterDomain="$CommunityDomain"
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[ -z "$SubCommunityDomain" ] || MasterDomain="$SubCommunityDomain"".""$MasterDomain"
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if [ -n "$CommunityExternPrefix" ];then
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MasterExternDomain="$CommunityExternPrefix"".""$CommunityDomain"
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[ -z "$SubCommunityDomain" ] || MasterExternDomain="$SubCommunityDomain"".""$MasterExternDomain"
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fi
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FirstInternal="$( echo "$InternalViews" | sed -ne 's/^\(\S\+\)\s.*$/\1/p')"
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# ForwardZones: "<Zone>/<Zonendatei>" ; optionaly multiple " ""<ZoneX>/<ZonendateiX>" no spaces in full filename
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ForwardZones="$MasterDomain""/""$ZoneFilesFolder""db.""$FirstInternal"".""$MasterDomain"
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BindIcvpnAclTmp="$TempFolder""icvpn-acl.conf"
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BindIcvpnAcl="$BindIncludeFileFolder""icvpn-acl.conf"
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[ -n "$DNSSECPolicy" ] || DNSSECKeyFolder=""
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mkdir -p "$TempFolder""cache"
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for IView in $InternalViews; do
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rm -f "$TempFolder""$IView"".conf"
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done
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rm -f "$TempFolder""$ExternalView"".conf"
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CachedMasterFile="$TempFolder""cache/db.""$MasterDomain"
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PreFetchMasterSerial="$(GetZoneFileSerial "$CachedMasterFile")"
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curl -s -S -f "$RemoteLocation""db.""$MasterDomain" --output "$CachedMasterFile" && \
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[ -f "$CachedMasterFile" ] && \
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{
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echo ""
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echo "_dnsscript_version IN TXT ""$DNSSCRIPT_VERSION" | NormalizeZoneFileFormatting
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} >> "$CachedMasterFile" || :
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PostFetchMasterSerial="$(GetZoneFileSerial "$CachedMasterFile")"
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[ -n "$SubCommunityDomain" ] || ServeMasterZone="$( GetAllZoneNameservers "$MasterDomain" "$CachedMasterFile" | awk '{for(i=NF;i>0;--i) if($i=="'"$DNSSCRIPT_SERVER_NAME"'") {printf 1}}')"
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if [ -n "$MasterExternDomain" ]; then
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if [ -n "$ServeMasterZone" ]; then
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ServeExtZone="1"
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else
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ServeExtZone="$( GetAllSubNameservers "$CommunityDomain" "$CommunityExternPrefix" "$CachedMasterFile" | awk '{for(i=NF;i>0;--i) if($i=="'"$DNSSCRIPT_SERVER_NAME"'") {printf 1}}')"
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fi
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else
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ServeExtZone=""
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fi
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UpdateExternal() {
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CachedZoneFile="$TempFolder""cache/db.""$InternalDomain""E"
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UpdateExternView=0
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if [ -n "$ExternalView" ] || [ -n "$ExternDomain" ]; then
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SerialExtern="$(GetZoneFileSerial "$ExternalZoneFile")"
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if [ $((SerialIntern)) -gt $((SerialExtern)) ]; then
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sed -e '/^[^;]*\s\(10\.\|[fF][cdCD][0-9a-fA-F]\{2\}:\)\S*\s*\(;.*\)\?$/d; \
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s/^[^;^@]*\s\+\([^;]*\)\s[Ii][Nn]\s\+[Ss][Oo][Aa]\s/@ \1 IN SOA /g' "$InternalZoneFile" \
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> "$ExternalZoneFile"
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UpdateExternView=1
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ReloadZone "$InternalDomain" "$ExternalView" "$ZoneFilesFolder"
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fi
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fi
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if [ -n "$ExternDomain" ]; then
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ExtDomainFile="$ZoneFilesFolder""db.""$FirstInternal"".""$ExternDomain"
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ZoneTempFolder="$TempFolder""cache/""$ExternDomain""/"
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cp -f "$ExternalZoneFile" "$CachedZoneFile"
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[ -z "$DNSSECKeyFolder" ] || sed -i -e '/^\s*_dnsseckeys\./d' "$CachedZoneFile"
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[ -n "$(sed -e '/^\s*\(@\s\+\([0-9]*\s\)\?\s*[Ii][Nn]\s\+[Nn][Ss]\)\s/!d' "$CachedZoneFile")" ] || \
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sed -i -e 's/^\s*\(@\s\+\([0-9]*\s\)\?\s*[Ii][Nn]\s\+[Ss][Oo][Aa]\)\s\+\S\+\s\+\S\+\s/\1 '"$DNSSCRIPT_SERVER_NAME"'. '"$DNSSCRIPT_CONTACT_EMAIL"' /g' "$CachedZoneFile"
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sed -i -e 's/^\s*'"$CommunityExternPrefix"'\s/@ /g;/^\s*\(@\|\S\+\.\)\s\+\([0-9]*\s\)\?\s*[Ii][Nn]\s\+[Dd][Ss]\s/d' "$CachedZoneFile"
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UpdateExternDomain="$(UpdateDNSSECEntryCache "$ExternDomain" "$ZoneTempFolder" "$CachedZoneFile" "$DNSSECKeyFolder")"
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if [ $UpdateExternView -ne 0 ] || [ $UpdateExternDomain -ne 0 ]; then
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for KeyFile in "$ZoneTempFolder"*; do
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[ "$KeyFile" = "$ZoneTempFolder""*" ] || \
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cat "$KeyFile" >> "$CachedZoneFile"
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done
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LocalExtDomainMasterSerial="$(GetZoneFileSerial "$ExtDomainFile")"
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if [ $((SerialIntern)) -le $((LocalExtDomainMasterSerial)) ]; then
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LocalExtDomainMasterSerial=$((LocalExtDomainMasterSerial+1))
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sed -i -e 's/^\(\s*\)'"$SerialIntern"'\(\s*;\s*[Ss]erial.*\)$/\1'"$LocalExtDomainMasterSerial"'\3/g' "$CachedZoneFile"
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sed -i -e 's/^\(\s*\S\+\s\+\([0-9]*\s\)\?\s*[Ii][Nn]\s\+[Ss][Oo][Aa]\s\+\S\+\s\+\S\+\s\+\)'"$SerialIntern"'\(\s\+.*\)$/\1'"$LocalExtDomainMasterSerial"'\3/g' "$CachedZoneFile"
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fi
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mv "$CachedZoneFile" "$ExtDomainFile"
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ReloadZone "$ExternDomain" "$InternalViews" "$ZoneFilesFolder"
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ReloadZone "$ExternDomain" "$ExternalView" "$ZoneFilesFolder"
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fi
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InsertZoneToViews "$InternalViews" "$ZoneFilesFolder" "$ExternDomain" "$ExtDomainFile" "$TempFolder" "$DNSSECPolicy"
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InsertZoneToViews "$ExternalView" "$ZoneFilesFolder" "$ExternDomain" "$ExtDomainFile" "$TempFolder" "$DNSSECPolicy"
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fi
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}
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if [ -n "$ServeMasterZone" ] || [ -n "$ServeExtZone" ]; then
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sed -i -e '/^\s*_dnsseckeys\./d' "$CachedMasterFile"
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FileForExternGeneration="$CachedMasterFile"
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if [ -n "$ExternalView" ]; then
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ExternFile="$ZoneFilesFolder""db.""$ExternalView"".""$MasterDomain"
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else
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ExternFile="$ZoneFilesFolder""db.extern.""$MasterDomain"
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fi
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LocalMasterSerial=$((PostFetchMasterSerial))
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if [ -n "$ServeMasterZone" ]; then
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MasterFile="$ZoneFilesFolder""db.""$FirstInternal"".""$MasterDomain"
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FileForExternGeneration="$MasterFile"
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ZoneTempFolder="$TempFolder""cache/""$MasterDomain""/"
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UpdateMaster="$(UpdateDNSSECEntryCache "$MasterDomain" "$ZoneTempFolder" "$CachedMasterFile" "$DNSSECKeyFolder")"
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if [ $((PostFetchMasterSerial)) -gt $((PreFetchMasterSerial)) ] || [ $UpdateMaster -ne 0 ]; then
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cp -f "$CachedMasterFile" "$CachedMasterFile""I"
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for KeyFile in "$ZoneTempFolder"*; do
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[ "$KeyFile" = "$ZoneTempFolder""*" ] || \
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cat "$KeyFile" >> "$CachedMasterFile""I"
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done
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LocalMasterSerial="$(GetZoneFileSerial "$MasterFile")"
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if [ $((PostFetchMasterSerial)) -le $((LocalMasterSerial)) ]; then
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LocalMasterSerial=$((LocalMasterSerial+1))
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sed -i -e 's/^\(\s*\)'"$PostFetchMasterSerial"'\(\s*;\s*[Ss]erial.*\)$/\1'"$LocalMasterSerial"'\3/g' "$CachedMasterFile""I"
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sed -i -e 's/^\(\s*\S\+\s\+\([0-9]*\s\)\?\s*[Ii][Nn]\s\+[Ss][Oo][Aa]\s\+\S\+\s\+\S\+\s\+\)'"$PostFetchMasterSerial"'\(\s\+.*\)$/\1'"$LocalMasterSerial"'\3/g' "$CachedMasterFile""I"
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else
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LocalMasterSerial=$((PostFetchMasterSerial))
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fi
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mv "$CachedMasterFile""I" "$MasterFile"
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ReloadZone "$MasterDomain" "$InternalViews" "$ZoneFilesFolder"
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InsertZoneToViews "$InternalViews" "$ZoneFilesFolder" "$MasterDomain" "$MasterFile" "$TempFolder" "$DNSSECPolicy"
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fi
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if [ -n "$ExternalView" ]; then
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InsertZoneToIncludeFile "$MasterDomain" "$ExternFile" "$TempFolder""$ExternalView"".conf" "$DNSSECPolicy"
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fi
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fi
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InternalZoneFile="$FileForExternGeneration"
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ExternalZoneFile="$ExternFile"
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InternalDomain="$MasterDomain"
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ExternDomain="$MasterExternDomain"
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SerialIntern="$LocalMasterSerial"
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UpdateExternal
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fi
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if [ -z "$MasterFile" ]; then
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MasterFile="$ZoneFilesFolder""db.""$FirstInternal"".""$MasterDomain"
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cp -f "$CachedMasterFile" "$MasterFile"
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fi
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for Subnet in $CommunitySubnets; do
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ReverseDomains="$(GetReverseDomains "$Subnet")"
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for RDomain in $ReverseDomains; do
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ReverseZoneFile="$(GetReverseZoneFileFromZone "${RDomain%*.}")"
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! curl -s -f "$RemoteLocation""static.""$ReverseZoneFile" \
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--output "$ZoneFilesFolder""static.""$ReverseZoneFile" && \
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rm -f "$ZoneFilesFolder""static.""$ReverseZoneFile"
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./update-rdnszone.sh "$RDomain" "$ForwardZones" "$ZoneFilesFolder""$ReverseZoneFile" "$TTLReReExMi" "$InternalViews"
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for IView in $InternalViews; do
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InsertZoneToIncludeFile "${RDomain%*.}" "$ZoneFilesFolder""$ReverseZoneFile" "$TempFolder""$IView"".conf"
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done
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done
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done
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# set shorter TTL for Hoods
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TTLReReExMi="420 360 180 1800 360"
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Hoods="$(GetOwnHoods "$MasterDomain" "$MasterFile")"
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DNSSECKeyFolder=""
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for Hood in $Hoods; do
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HoodDomain="${Hood%%\#*}"".""$MasterDomain"
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Subnets="$(echo "${Hood#*\#}" | sed -e 's/#/ /g')"
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HoodZoneFile="$ZoneFilesFolder""db.""$FirstInternal"".""$HoodDomain"
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if [ ! -f "$HoodZoneFile" ]; then
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{
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echo "\$TTL ${TTLReReExMi%% *}"
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echo "@ IN SOA $DNSSCRIPT_SERVER_NAME""."" $DNSSCRIPT_CONTACT_EMAIL ("
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echo " 1 ; Serial"
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echo " ""$(echo "$TTLReReExMi" | awk '{print $2}')"" ; Refresh"
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echo " ""$(echo "$TTLReReExMi" | awk '{print $3}')"" ; Retry"
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echo " ""$(echo "$TTLReReExMi" | awk '{print $4}')"" ; Expire"
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echo " ""$(echo "$TTLReReExMi" | awk '{print $5}')"" ) ; Negative Cache TTL"
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echo ";"
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echo "@ IN NS $DNSSCRIPT_SERVER_NAME""."""
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GetOwnGlueRecords "$MasterDomain" "$HoodDomain" "$MasterFile"
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echo ";"
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} > "$HoodZoneFile"
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fi
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ZoneTempFolder="$TempFolder""cache/""$HoodDomain""/"
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./update-hoodzone.sh "$HoodZoneFile" "$HoodDomain" "$Subnets" "$InternalViews" "$ZoneTempFolder" "$ZoneFilesFolder"
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InsertZoneToViews "$InternalViews" "$ZoneFilesFolder" "$HoodDomain" "$HoodZoneFile" "$TempFolder" "$DNSSECPolicy"
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HoodForwardZones="$ForwardZones $HoodDomain""/""$HoodZoneFile"
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for Subnet in $Subnets; do
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ReverseDomains="$(GetReverseDomains "$Subnet")"
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for RDomain in $ReverseDomains; do
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ReverseZoneFileFullPath="$ZoneFilesFolder""$(GetReverseZoneFileFromZone "${RDomain%*.}")"
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./update-rdnszone.sh "$RDomain" "$HoodForwardZones" "$ReverseZoneFileFullPath" "$TTLReReExMi" "$InternalViews"
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for IView in $InternalViews; do
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InsertZoneToIncludeFile "${RDomain%*.}" "$ReverseZoneFileFullPath" "$TempFolder""$IView"".conf"
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done
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done
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done
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if [ -n "$MasterExternDomain" ]; then
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HoodExternDomain="${Hood%%\#*}"".""$MasterExternDomain"
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else
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HoodExternDomain=""
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fi
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if [ -n "$ExternalView" ]; then
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ExternFile="$ZoneFilesFolder""db.""$ExternalView"".""$HoodDomain"
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elif [ -n "$HoodExternDomain" ]; then
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ExternFile="$ZoneFilesFolder""db.""$HoodExternDomain"
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else
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ExternFile=""
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fi
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if [ -n "$ExternFile" ]; then
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if [ -n "$ExternalView" ]; then
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InsertZoneToIncludeFile "$HoodDomain" "$ExternFile" "$TempFolder""$ExternalView"".conf" "$DNSSECPolicy"
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fi
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InternalZoneFile="$HoodZoneFile"
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ExternalZoneFile="$ExternFile"
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InternalDomain="$HoodDomain"
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ExternDomain="$HoodExternDomain"
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SerialIntern="$(GetZoneFileSerial "$InternalZoneFile")"
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UpdateExternal
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fi
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done
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./update-public-acl.sh "$BindIcvpnAclTmp" "$RemoteLocation" "$RoutingTables"
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ReConfigBind=0
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UpdateBindConfig() {
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if [ -f "$1" ] && ! cmp -s "$1" "$2"; then
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mv "$1" "$2"
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ReConfigBind=1
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else
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rm -f "$1"
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fi
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}
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UpdateBindConfig "$BindIcvpnAclTmp" "$BindIcvpnAcl"
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for IView in $InternalViews; do
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UpdateBindConfig "$TempFolder""$IView"".conf" "$BindIncludeFileFolder""$IView"".conf"
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done
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if [ -n "$ExternalView" ]; then
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UpdateBindConfig "$TempFolder""$ExternalView"".conf" "$BindIncludeFileFolder""$ExternalView"".conf"
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fi
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if [ $ReConfigBind -ne 0 ] || [ -f "/tmp/dnsscript-forcereconf" ]; then
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if [ $((DNSSCRIPT_BIND_RELOAD_VER)) -eq 0 ]; then
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systemctl restart bind9
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elif [ $((DNSSCRIPT_BIND_RELOAD_VER)) -eq 1 ]; then
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rndc reconfig
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elif [ $((DNSSCRIPT_BIND_RELOAD_VER)) -eq 2 ]; then
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/etc/init.d/named restart
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fi
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rm -f "/tmp/dnsscript-forcereconf"
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fi |