commit 4f05d037130b0ecf83c0b0d43379f935a9ab08fe
Author: Michael Clemens <clemens@fsfe.org>
Date:   Sun Apr 29 20:39:07 2018 +0200

    first commit

diff --git a/README.md b/README.md
new file mode 100644
index 0000000..d56cbc6
--- /dev/null
+++ b/README.md
@@ -0,0 +1 @@
+# nsd-dyndns
diff --git a/dyndns.conf-dist b/dyndns.conf-dist
new file mode 100644
index 0000000..b7b01a3
--- /dev/null
+++ b/dyndns.conf-dist
@@ -0,0 +1,7 @@
+PASS="qwertzuiop1234567890"
+LOG=/var/www/logs/dyndns.log
+LAST_IP="none"
+LAST_IP_FILE=/tmp/last_dyndns_ip.txt
+TIMESTAMP=$(date +%s)
+ZONEFILE=/var/nsd/zones/dyndns.org.zone
+SUBDOMAIN="blah"
diff --git a/dyndns.sh b/dyndns.sh
new file mode 100755
index 0000000..6af24f3
--- /dev/null
+++ b/dyndns.sh
@@ -0,0 +1,16 @@
+#!/usr/local/bin/bash
+
+. /etc/dyndns.conf
+
+REQ_IP=$(grep ${PASS} ${LOG} | tail -1 | awk '{print $2}')
+
+if [ -f $LAST_IP_FILE ]; then
+	LAST_IP=$(cat $LAST_IP_FILE)
+fi
+
+if [[ $LAST_IP != $REQ_IP ]]; then
+	cat $ZONEFILE | sed "4s/.*/${TIMESTAMP}/" | sed "s/^${SUBDOMAIN}.*/${SUBDOMAIN} IN A ${REQ_IP}/" > $ZONEFILE
+	/etc/rc.d/nsd reload
+	echo $REQ_IP > $LAST_IP_FILE
+	echo "update"
+fi