New, full-fledged python implementation

1 files changed, 91 insertions, 0 deletions

diff --git a/he-dyndns-bash b/he-dyndns-bash
new file mode 100755
index 0000000..0ce3730
--- /dev/null
+++ b/he-dyndns-bash
@@ -0,0 +1,91 @@
+#!/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() {
+
+	if [ ! -z $2 ]; then
+		myip="&myip=$2"
+	fi
+
+	/usr/bin/curl -s$1 "https://$FQDN:$CODE@$DNSSITE/nic/update?hostname=$FQDN$myip" > $tfile
+	if ! egrep -q '(good|nochg)' $tfile; then
+		echo -n "v$1 change: "
+		cat $tfile
+		echo
+		retval=1
+	fi
+}
+
+## MAIN ##
+while getopts "46a:A:hd:s:" arg; do
+	case "${arg}" in
+		4)
+			DO4=Y
+			;;
+		6)
+			DO6=Y
+			;;
+		a)
+			ADDR4=${OPTARG}
+			;;
+		A)
+			ADDR6=${OPTARG}
+			;;
+		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 ${ADDR4}
+	fi
+
+	if [ ! -z ${DO6} ]; then
+		doUpdate 6 ${ADDR6}
+	fi
+done
+
+rm $tfile
+
+exit $retval
+