added updated script for SDDNSy
This commit is contained in:
parent
6f6b2b1095
commit
13dcad2e13
1 changed files with 196 additions and 0 deletions
196
bash/sddns.sh
Executable file
196
bash/sddns.sh
Executable file
|
|
@ -0,0 +1,196 @@
|
|||
#!/bin/bash
|
||||
##
|
||||
# SDDNS update script
|
||||
#
|
||||
# @copyright 2013 Steffen Vogel
|
||||
# @license http://www.gnu.org/licenses/gpl.txt GNU Public License
|
||||
# @author Steffen Vogel <post@steffenvogel.de>
|
||||
# @link http://www.steffenvogel.de
|
||||
##
|
||||
##
|
||||
# This file is part of sddns
|
||||
#
|
||||
# sddns is free software: you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License as published by
|
||||
# the Free Software Foundation, either version 3 of the License, or
|
||||
# any later version.
|
||||
#
|
||||
# sddns is distributed in the hope that it will be useful,
|
||||
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
# GNU General Public License for more details.
|
||||
#
|
||||
# You should have received a copy of the GNU General Public License
|
||||
# along with sddns. If not, see <http://www.gnu.org/licenses/>.
|
||||
##
|
||||
|
||||
# default options
|
||||
VER=4
|
||||
TTL=120
|
||||
USER=anonymous
|
||||
ZONE=0l.de
|
||||
HOST=$(hostname)
|
||||
|
||||
function usage {
|
||||
cat <<-EOF
|
||||
Usage: sddns.sh [-4,-6] [-p PASS] [-t TTL] [-i IF] [-z ZONE] [-d] [-D] [HOST]
|
||||
|
||||
Options:
|
||||
-u optional user for admin permissions
|
||||
-p is the password from the webservice otherwise prompted
|
||||
-t is the time to live in seconds
|
||||
-i use the ip from this nic
|
||||
-z nameserver zone
|
||||
-4 update A record (default)
|
||||
-6 update AAAA record
|
||||
-D live monitor interface for changing addresses
|
||||
-d enable verbose output
|
||||
-h show this help
|
||||
|
||||
HOST is the hostname which you want to update
|
||||
defaults to the local hostname
|
||||
|
||||
Example: sddns.sh -6 -t 3600 -i eth0 sea
|
||||
|
||||
written by Steffen Vogel <post@steffenvogel.de>
|
||||
EOF
|
||||
}
|
||||
|
||||
function deps() {
|
||||
FAILED=0
|
||||
for DEP in $*; do
|
||||
if ! which ${DEP} &>/dev/null; then
|
||||
echo -e "This script requires ${DEP} to run but it is not installed."
|
||||
((FAILED++))
|
||||
fi
|
||||
done
|
||||
return ${FAILED}
|
||||
}
|
||||
|
||||
function parse() {
|
||||
if [[ $* =~ ${RE} && ${BASH_REMATCH[1]} == "${IF}" ]]; then
|
||||
echo ${BASH_REMATCH[2]}
|
||||
fi
|
||||
}
|
||||
|
||||
function update() {
|
||||
RDATA=$1
|
||||
TYPE=$2
|
||||
|
||||
WAIT=1
|
||||
URL="http://d.0l.de/update.txt?host=${HOST}&zone=${ZONE}&ttl=${TTL}&class=IN&type=${TYPE}&rdata=${RDATA}&debug=${DEBUG}"
|
||||
|
||||
if (( $DEBUG )); then echo "Updating record: $URL"; fi
|
||||
|
||||
while true; do
|
||||
CODE=$(curl -w %{http_code} -s -o /dev/stderr -u "${USER}:${PASS}" "$URL") 2>&1
|
||||
|
||||
if [ $CODE -eq 0 ]; then
|
||||
if (( $DEBUG )); then echo "Sleeping for ${WAIT} secs..."; fi
|
||||
sleep $WAIT; # wait until interface is ready
|
||||
WAIT=$(($WAIT*2))
|
||||
elif [ $CODE -ge 500 ]; then
|
||||
if (( $DEBUG )); then echo "Request failed. Aborting.."; fi
|
||||
return 1
|
||||
else
|
||||
break
|
||||
fi
|
||||
done
|
||||
|
||||
return 0
|
||||
}
|
||||
|
||||
function get() {
|
||||
curl -${VER} -s http://d.0l.de/ip.txt | cut -f 3
|
||||
}
|
||||
|
||||
function query() {
|
||||
dig $TYPE $HOST.$ZONE @ns0.0l.de +short
|
||||
}
|
||||
|
||||
# check dependencies
|
||||
if ! deps dig curl ip sed cut; then
|
||||
echo -e "Unmet dependencies: Aborting!"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# parse arguments
|
||||
while getopts "z:p:u:t:i:Dhd46" OPT; do
|
||||
case ${OPT} in
|
||||
p)
|
||||
PASS=${OPTARG}
|
||||
;;
|
||||
u)
|
||||
USER=${OPTARG}
|
||||
;;
|
||||
t)
|
||||
TTL=${OPTARG}
|
||||
;;
|
||||
4)
|
||||
VER=4
|
||||
;;
|
||||
6)
|
||||
VER=6
|
||||
;;
|
||||
i)
|
||||
IF=${OPTARG}
|
||||
;;
|
||||
D)
|
||||
DAEMON=1
|
||||
;;
|
||||
d)
|
||||
DEBUG=${OPTARG:-5}
|
||||
;;
|
||||
h)
|
||||
usage
|
||||
exit 0
|
||||
;;
|
||||
*)
|
||||
usage
|
||||
exit 1
|
||||
esac
|
||||
done
|
||||
|
||||
# clear all options and reset the command line
|
||||
shift $((OPTIND-1))
|
||||
|
||||
# parsing host
|
||||
if [ -n "$1" ]; then
|
||||
HOST=$1
|
||||
else
|
||||
echo -e "missing host"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# prompting for password
|
||||
if [ -z "${PASS}" ]; then
|
||||
read -s -p "password: " PASS
|
||||
echo
|
||||
fi
|
||||
|
||||
# setup regular expression and record type
|
||||
if [ ${VER} -eq 4 ]; then
|
||||
RE='^[0-9]+: +([^ ]+) +inet +([^/]+)/([0-9]+) brd [^ ]+ +scope +global'
|
||||
TYPE="A"
|
||||
else
|
||||
RE='^[0-9]+: +([^ ]+) +inet6 +([^/]+)/([0-9]+) +scope +global'
|
||||
TYPE="AAAA"
|
||||
fi
|
||||
|
||||
# lets go
|
||||
if [ -z "${IF}" ]; then
|
||||
IP=$(get)
|
||||
if [ -n "${IP}" ]; then
|
||||
update "${IP}" "${TYPE}" || exit
|
||||
else
|
||||
echo -e "failed to get ip from net"
|
||||
exit 1
|
||||
fi
|
||||
else
|
||||
while read LINE; do
|
||||
IP=$(parse ${LINE})
|
||||
if [ -n "${IP}" ]; then
|
||||
update "${IP}" "${TYPE}" || exit
|
||||
fi
|
||||
done < <(ip -o -${VER} address show && (( ${DAEMON} )) && ip -o -${VER} monitor address)
|
||||
fi
|
||||
Loading…
Add table
Reference in a new issue