diff options
| -rwxr-xr-x | he-dyndns | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/he-dyndns b/he-dyndns new file mode 100755 index 0000000..3647c67 --- /dev/null +++ b/he-dyndns @@ -0,0 +1,80 @@ +#!/bin/bash +# +# Copyright (C)2019 by Jason D. McCormick <jason@mfamily.org> +# Licensed under the Apache License 2.0. See LICENSE included +# with the distribution bundle that contained this file. +# + +PATH="/usr/bin:/bin:/usr/sbin:/sbin" + +## KNOWLEDGE IS GOOD ## +usage() { echo "Usage: $0 [-s SECRET] -d HOSTNAME[,HOSTNAME,...]" 1>&2; exit 1; } + +## DO THE UPDATE FUNCTION ONCE FOR HAPPY EDITING ## +doUpdate() { + /usr/bin/curl -s$1 "https://$FQDN:$CODE@$DNSSITE/nic/update?hostname=$FQDN" > $tfile + if ! egrep -q '(good|nochg)' $tfile; then + echo -n "v$1 change: " + cat $tfile + echo + retval=1 + fi +} + +## MAIN ## +while getopts "46hd:s:" arg; do + case "${arg}" in + 4) + DO4=Y + ;; + 6) + DO6=Y + ;; + d) + FQDNS=${OPTARG} + ;; + s) + CODE=${OPTARG} + ;; + *) + usage + ;; + esac +done + +if [ -z "${FQDNS}" ]; then + usage +fi + +if [ ! -f /etc/he-dns-secret ] && [ -z "${CODE}" ]; then + usage +fi + +if [ -z "${CODE}" ]; then + . /etc/he-dns-secret + + if [ -z "${CODE}" ]; then + echo "/etc/he-dns-secret does not contain a CODE= variable" + exit 1 + fi +fi + +DNSSITE="dyn.dns.he.net"; +retval=0 +tfile=$(/bin/mktemp) + +for FQDN in $(echo $FQDNS | tr ',' ' ') +do + if [ ! -z ${DO4} ]; then + doUpdate 4 + fi + + if [ ! -z ${DO6} ]; then + doUpdate 6 + fi +done + +rm $tfile + +exit $retval + |