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dns
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added zone file

This commit is contained in:
mortzu 2014-10-12 13:52:26 +02:00
parent c737d6f1b9
commit fd7e3f00e1
3 changed files with 318 additions and 51 deletions
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77
data/me.ffhb.zone Normal file
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@ -0,0 +1,77 @@
$TTL 1D
@ IN SOA ns01 noc.bremen.freifunk.net. (
2014092801 ; Serial
4H ; Refresh
1H ; Retry
2W ; Expire
1D) ; Negative Cache TTL
NS ns01
NS ns02
NS ns03
MX 50 mail
; pages.github.com
A 192.30.252.153
A 192.30.252.154
; network stuff
gw01 A 185.55.119.1
AAAA 2a02:2919::1
gw02 A 185.55.119.2
AAAA 2a02:2919::2
noc01 A 185.55.119.18
AAAA 2a02:2919:fdda::18
ns01 A 37.72.148.55
AAAA 2a02:2918:505:101::55
ns02 A 37.72.148.163
AAAA 2a02:2918:506:101::163
ns03 A 151.236.28.15
AAAA 2a00:1768:1003:151:236:28:15:1
vpn01 A 185.55.119.34
AAAA 2a02:2919:fcca::2
vpn02 A 134.102.22.130
vpn A 185.55.119.34
A 134.102.22.130
AAAA 2a02:2919:fcca::2
; mail
mail A 37.72.148.168
AAAA 2a02:2918:506:101::168
; websites
www CNAME @
downloads A 37.72.148.168
AAAA 2a02:2918:506:101::168
wiki A 37.72.148.168
AAAA 2a02:2918:506:101::168
; mesh stuff
nodes NS ns01
nodes NS ns02
nodes NS ns03
node A 10.196.0.127
AAAA fd2f:5119:f2c::127
mesh A 10.196.0.1
AAAA fd2f:5119:f2c::1
jplitza A 10.196.0.200
AAAA 2a02:2919:1001::c8
wikipedia CNAME jplitza
$ORIGIN services
1.ntp AAAA fd2f:5119:f2c::1
1.vpn AAAA fd2f:5119:f2c::1
2.vpn AAAA fd2f:5119:f2c::2
introducer.tahoe-lafs A 10.196.0.2
node A 10.196.0.127
AAAA fd2f:5119:f2c::127
smokeping AAAA 2a02:2919:1000:0:ba27:ebff:fe69:2879

118
update-dns-nodes.sh Executable file
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@ -0,0 +1,118 @@
#! /usr/bin/env bash
# 2014, Moritz Kaspar Rudert (mortzu) <mr@planetcyborg.de>.
# All rights reserved.
# Redistribution and use in source and binary forms, with or without modification, are
# permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice, this list of
# conditions and the following disclaimer.
#
# * Redistributions in binary form must reproduce the above copyright notice, this list
# of conditions and the following disclaimer in the documentation and/or other materials
# provided with the distribution.
#
# * The names of its contributors may not be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# * Feel free to send Club Mate to support the work.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
# AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS
# AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
# PID file
RUN_FILE='/run/update-dns-nodes.run'
# getting workingdir of scripts
WORK_DIR="$(dirname $(readlink -nf $0))"
# set safe path
PATH="${WORK_DIR}:/sbin:/usr/sbin:/bin:/usr/bin"
# alfred data file
ALFRED_DATA_FILE='/var/cache/ffhb/alfred.json'
# create alfred data directory
mkdir -p "$(dirname $ALFRED_DATA_FILE)"
# define variable to count loops
declare -i NUM=0
# tmp file
TMP_FILE="$(mktemp)"
# if creation of tmp file failed
# exit
if [ -z "$TMP_FILE" ]; then
exit 1
fi
# names of zones
ZONEFILE=/var/cache/bind/ffhb.nodes.zone
RZONEFILE=/var/cache/bind/arpa.ip6.f.d.2.f.5.1.1.9.0.f.2.c.zone
function on_exit() {
# remove tmp files
for FILE in "$TMP_FILE" "$RUN_FILE"; do
if [ -n "$FILE" ]; then
rm -f "$FILE"
fi
done
}
trap on_exit EXIT SIGTERM SIGINT
# write run file
if [ -f "$RUN_FILE" ]; then
echo 'Script already running!' >&2
exit 1
else
touch "$RUN_FILE"
fi
# loop until data received
while true; do
# increment counter
NUM=$(($NUM+1))
# get data from alfred
# but limit the time
timeout -s KILL 30s alfred-json -z -r 158 >"$TMP_FILE" 2>/dev/null
# on success leave loop
if [ $? -eq 0 ]; then
break
fi
# if the 240th run has reached kill script
if [ $NUM -gt 240 ]; then
# exit with error code
exit 1
fi
# sleep to be safe CPU load don't getting higher
sleep 1
done
# generate forward zone
if zonegen.py <"$TMP_FILE" >"${ZONEFILE}.new"; then
mv "${ZONEFILE}.new" "${ZONEFILE}"
fi
# generate reverse zone
if rzonegen.py 0.0.0.0.c.2.f.0.9.1.1.5.f.2.d.f.ip6.arpa <"$TMP_FILE" >"${RZONEFILE}.new"; then
mv "${RZONEFILE}.new" "${RZONEFILE}"
fi
# reload nameserver
rndc reload >/dev/null
# copy alfred file
cp "$TMP_FILE" "$ALFRED_DATA_FILE"

166
update-dns.sh
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@ -27,40 +27,33 @@
# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
# TMP file
TMP_CONFIG_FILE="$(mktemp)"
# PID file
RUN_FILE='/run/ffhb-update-dns.run'
RUN_FILE='/run/update-dns.run'
# destination zonefile directory
DEST_DIR='/var/cache/bind'
DEST_CONFIG_FILE="${DEST_DIR}/zones.conf"
# getting workingdir of scripts
WORK_DIR="$(dirname $(readlink -nf $0))"
# set safe path
PATH="${WORK_DIR}:/sbin:/usr/sbin:/bin:/usr/bin"
PATH=/sbin:/usr/sbin:/bin:/usr/bin
# alfred data file
ALFRED_DATA_FILE='/var/cache/ffhb/alfred.json'
# several sites to get IP address
GET_MY_IP=( "http://getip.planetcyb.org" "http://whatismyip.oceanus.ro" "http://www.whatismyip.us" "http://whatismyip.everdot.org" "http://www.whatismyip.ca" "http://whatismyip.com.au" "http://www.whatismyip.nl" "http://www.whatismyip.ro" "http://www.whatismyip.se" )
# create alfred data directory
mkdir -p "$(dirname $ALFRED_DATA_FILE)"
# define variable to count loops
declare -i NUM=0
# tmp file
TMP_FILE="$(mktemp)"
# if creation of tmp file failed
# exit
if [ -z "$TMP_FILE" ]; then
exit 1
fi
# names of zones
ZONEFILE=/var/cache/bind/ffhb.nodes.zone
RZONEFILE=/var/cache/bind/arpa.ip6.f.d.2.f.5.1.1.9.0.f.2.c.zone
EXTERNAL_IPV4_ADDR=''
EXTERNAL_IPV6_ADDR="$(perl -MNetAddr::IP -MNet::Address::IP::Local -e "print NetAddr::IP->new6(Net::Address::IP::Local->public_ipv6)->short()" | tr '[A-Z]' '[a-z]')"
EXTERNAL_IPV6_NETWORK="$(perl -MNetAddr::IP -e "print NetAddr::IP->new6('${EXTERNAL_IPV6_ADDR}/64')->network->short()" | tr '[A-Z]' '[a-z]' | sed -e 's/::$//g')"
function on_exit() {
# remove tmp files
for FILE in "$TMP_FILE" "$RUN_FILE"; do
for FILE in "$RUN_FILE" "$TMP_CONFIG_FILE"; do
if [ -n "$FILE" ]; then
rm -f "$FILE"
fi
@ -77,42 +70,121 @@ else
touch "$RUN_FILE"
fi
# loop until data received
while true; do
# increment counter
NUM=$(($NUM+1))
# get IPv4 address
for URL in "${GET_MY_IP[@]}"; do
EXTERNAL_IPV4_ADDR="$(curl -m4 -4 -s -- ${URL} | grep -Eo "[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+" | head -n1)"
# get data from alfred
# but limit the time
timeout -s KILL 30s alfred-json -z -r 158 >"$TMP_FILE" 2>/dev/null
# on success leave loop
if [ $? -eq 0 ]; then
if [ -n "$EXTERNAL_IPV4_ADDR" ]; then
break
fi
done
# if the 240th run has reached kill script
if [ $NUM -gt 240 ]; then
# exit with error code
# print error if determining of IP addresses failed
if [ -z "$EXTERNAL_IPV4_ADDR" -o -z "$EXTERNAL_IPV6_ADDR" ]; then
echo 'Determining of IP address failed!' >&2
exit 1
fi
# sleep to be safe CPU load don't getting higher
sleep 1
# refresh git repository
git --work-tree="${WORK_DIR}" --git-dir="${WORK_DIR}/.git" pull -q --rebase=false origin master
# loop over zones
for FILE in ${WORK_DIR}/data/*; do
# tmp file
TMP_FILE="$(mktemp)"
# reset some variables
OLD_SERIAL=''
NEW_SERIAL=''
# construct realname
REAL_NAME="$(basename $FILE)"
# construct origin
ORIGIN="$(basename "${FILE/.zone/}")"
# build zone name from filename
declare -a DOMAIN_PARTS
IFS='.' read -a DOMAIN_PARTS <<< "$ORIGIN"
DOMAIN=''
for (( idx=${#DOMAIN_PARTS[@]}-1 ; idx>=0 ; idx-- )) ; do
[ -n "$DOMAIN" ] && DOMAIN="$DOMAIN.${DOMAIN_PARTS[idx]}" || DOMAIN="${DOMAIN_PARTS[idx]}"
done
# generate forward zone
if zonegen.py <"$TMP_FILE" >"${ZONEFILE}.new"; then
mv "${ZONEFILE}.new" "${ZONEFILE}"
# replace the first dash with a slash
# for RDNS zones smaller than /24
if [ $(grep -o '-' <<<"$DOMAIN" | wc -l) -gt 1 ]; then
DOMAIN="$(sed -e 's#-#/#' <<< $DOMAIN)"
fi
# generate reverse zone
if rzonegen.py 0.0.0.0.c.2.f.0.9.1.1.5.f.2.d.f.ip6.arpa <"$TMP_FILE" >"${RZONEFILE}.new"; then
mv "${RZONEFILE}.new" "${RZONEFILE}"
# write new config entry
cat >> "$TMP_CONFIG_FILE" <<EOF
zone "$DOMAIN" {
type master;
file "${DEST_DIR}/${REAL_NAME}";
allow-query { any; };
notify yes;
};
EOF
# replace placeholder with real ip adresses
sed -e "s/___EXTERNAL-IPV4-ADDR___/${EXTERNAL_IPV4_ADDR}/g" -e "s/___EXTERNAL-IPV6-ADDR___/${EXTERNAL_IPV6_ADDR}/g" -e "s/___EXTERNAL-IPV6-NETWORK___/${EXTERNAL_IPV6_NETWORK}/g" "$FILE" >"$TMP_FILE"
# if zone already exists
if [ -f "${DEST_DIR}/${REAL_NAME}" ]; then
# save old serial number
OLD_SERIAL="$(grep -Eho "20[0-1][0-9]{7}" "${DEST_DIR}/${REAL_NAME}")"
# strip serial from old and new files
# diff is easier without different serial numbers
TMP_FILE_OLD="$(mktemp)"
TMP_FILE_NEW="$(mktemp)"
sed -e '/20[0-1][0-9]\{7\}/d' "${DEST_DIR}/${REAL_NAME}" >"$TMP_FILE_OLD"
sed -e '/20[0-1][0-9]\{7\}/d' "$TMP_FILE" >"$TMP_FILE_NEW"
# check if update is necessary
if diff -q "$TMP_FILE_OLD" "$TMP_FILE_NEW" >/dev/null 2>&1; then
# if zones are identically
# remove tmp files
for FILE in "$TMP_FILE" "$TMP_FILE_OLD" "$TMP_FILE_NEW"; do
if [ -n "$FILE" ]; then
rm -f "$FILE"
fi
done
continue
fi
fi
# check if zone is valid
if ! named-checkzone "$DOMAIN" "$TMP_FILE" >/dev/null 2>&1; then
echo "$FILE is not valid!" >&2
for FILE in "$TMP_FILE" "$TMP_FILE_OLD" "$TMP_FILE_NEW"; do
if [ -n "$FILE" ]; then
rm -f "$FILE"
fi
done
continue
fi
# update serial
if [ -n "$OLD_SERIAL" ]; then
NEW_SERIAL=$(($OLD_SERIAL + 1))
else
NEW_SERIAL=$(date +'%Y%m%d%H')
fi
sed -e 's/20[0-1][0-9]\{7\}/'${NEW_SERIAL}'/g' -i "$TMP_FILE"
# move the file to real place
mv "$TMP_FILE" "${DEST_DIR}/${REAL_NAME}"
# fix permissions
chmod 0644 "${DEST_DIR}/${REAL_NAME}"
done
if [ ! -f "$DEST_CONFIG_FILE" ] || ( [ -n "$(cat $TMP_CONFIG_FILE)" ] && ! diff -q "$TMP_CONFIG_FILE" "$DEST_CONFIG_FILE" >/dev/null 2>&1 ); then
mv "$TMP_CONFIG_FILE" "$DEST_CONFIG_FILE"
chmod 0644 "$DEST_CONFIG_FILE"
fi
# reload nameserver
rndc reload >/dev/null
# copy alfred file
cp "$TMP_FILE" "$ALFRED_DATA_FILE"