ADD security code

README.MD

@@ -45,4 +45,7 @@ set system task-scheduler task update.ddclient executable path /config/scripts/d
 set system task-scheduler task update.ddclient interval 1d
 save
 commit
-```
+```
+
+### NOTICE
+Since some modules have been removed for wheezy, I switched to Stretch.

ddclient.sh

@@ -1,18 +1,20 @@
 #!/bin/sh
+set -e 
+set -o pipefail
 ddclient_sum="a548456691c0e08f803219f4b18d6b1c43840e05"
 if [ `sha1sum /usr/sbin/ddclient |cut -d ' ' -f 1` != $ddclient_sum ]
 then
-        curl -o /tmp/ddclient https://github.com/SpartaEN/ubnt-ddns-ipv6/releases/latest/download/ddclient
-        curl -o /tmp/libnetwork-ipv4addr-perl_0.10.ds-2_all.deb http://http.us.debian.org/debian/pool/main/libn/libnetwork-ipv4addr-perl/libnetwork-ipv4addr-perl_0.10.ds-2_all.deb
-        curl -o /tmp/libnet-ipv6addr-perl_0.2.dfsg.1-3_all.deb http://http.us.debian.org/debian/pool/main/libn/libnet-ipv6addr-perl/libnet-ipv6addr-perl_0.2.dfsg.1-3_all.deb
-        curl -o /tmp/libnet-netmask-perl_1.9016-1_all.deb http://http.us.debian.org/debian/pool/main/libn/libnet-netmask-perl/libnet-netmask-perl_1.9016-1_all.deb
-        curl -o /tmp/libdata-validate-ip-perl_0.14-1_all.deb http://http.us.debian.org/debian/pool/main/libd/libdata-validate-ip-perl/libdata-validate-ip-perl_0.14-1_all.deb
-        curl -o /tmp/libio-socket-inet6-perl_2.69-2_all.deb http://http.us.debian.org/debian/pool/main/libi/libio-socket-inet6-perl/libio-socket-inet6-perl_2.69-2_all.deb
-        dpkg -i libnetwork-ipv4addr-perl_0.10.ds-2_all.deb
-        dpkg -i /tmp/libnet-ipv6addr-perl_1.9016-1_all.deb
-        dpkg -i /tmp/libnet-netmask-perl_1.9016-1_all.deb
-        dpkg -i /tmp/libdata-validate-ip-perl_0.14-1_all.deb
-        dpkg -i /tmp/libio-socket-inet6-perl_2.69-2_all.deb
+        curl -fo /tmp/ddclient https://github.com/SpartaEN/ubnt-ddns-ipv6/releases/latest/download/ddclient
+        curl -fo /tmp/libnetwork-ipv4addr-perl.deb http://http.us.debian.org/debian/pool/main/libn/libnetwork-ipv4addr-perl/libnetwork-ipv4addr-perl_0.10.ds-2_all.deb
+        curl -fo /tmp/libnet-ipv6addr-perl.deb http://http.us.debian.org/debian/pool/main/libn/libnet-ipv6addr-perl/libnet-ipv6addr-perl_0.2.dfsg.1-3_all.deb
+        curl -fo /tmp/libnet-netmask-perl.deb http://http.us.debian.org/debian/pool/main/libn/libnet-netmask-perl/libnet-netmask-perl_1.9022-1_all.deb
+        curl -fo /tmp/libdata-validate-ip-perl.deb http://http.us.debian.org/debian/pool/main/libd/libdata-validate-ip-perl/libdata-validate-ip-perl_0.27-1_all.deb
+        curl -fo /tmp/libio-socket-inet6-perl.deb http://http.us.debian.org/debian/pool/main/libi/libio-socket-inet6-perl/libio-socket-inet6-perl_2.72-2_all.deb
+        dpkg -i /tmp/libnetwork-ipv4addr-perl.deb
+        dpkg -i /tmp/libnet-ipv6addr-perl.deb
+        dpkg -i /tmp/libnet-netmask-perl.deb
+        dpkg -i /tmp/libdata-validate-ip-perl.deb
+        dpkg -i /tmp/libio-socket-inet6-perl.deb
         chmod +x /tmp/ddclient
         cp /usr/sbin/ddclient /usr/sbin/ddclient-bak
         cp /usr/sbin/ddclient-ubnt /usr/sbin/ddclient-ubnt-bak