initial commit

1 files changed, 53 insertions, 0 deletions

diff --git a/dyndns.sh b/dyndns.sh
new file mode 100644
index 0000000..0221a5d
--- /dev/null
+++ b/dyndns.sh
@@ -0,0 +1,53 @@
+#!/bin/sh
+#
+# dyndns.org updater script
+#
+
+# dyndns options
+# Do not edit this file!
+# Use the default /etc/dyndns.conf file instead.
+USER=
+PASS=
+DOMAIN=
+WGET_ARGS="--no-check-certificate -q"
+CONF="/etc/dyndns.conf"
+TMPDIR="/tmp"
+
+if [ -x /usr/bin/wget -a -x /bin/wget ]; then
+  echo "$0: no wget found, abort .."
+fi
+
+# check for compiled in SSL support
+/usr/bin/wget --version | grep -E '\+https(.*)\+openssl' >&2 >/dev/null
+if [ $? -ne 0 ]; then
+  echo "$0: need wget with SSL support"
+  echo "$0: check wget --version"
+  exit 127
+fi
+
+[ -z "$1" ] || CONF="$1"
+if [ -r $CONF ]; then
+  . $CONF
+else
+  echo "$0: no $CONF, abort .."
+  exit 1
+fi
+
+[ -z "$2" ] || TMPDIR="$2"
+wget $WGET_ARGS "http://checkip.dyndns.com/index.html" --output-document="$TMPDIR/new.ip"
+[ -f "$TMPDIR/old.ip" ] || touch "$TMPDIR/old.ip"
+
+if [ "`cat $TMPDIR/new.ip`" = "`cat $TMPDIR/old.ip`" ]; then
+        echo "No new IP"
+else
+        wget $WGET_ARGS "https://$USER:$PASS@members.dyndns.org/nic/update?hostname=$DOMAIN" --output-document="$TMPDIR/upd.ip"
+        echo "New IP"
+        cat "$TMPDIR/upd.ip"
+        rm -f "$TMPDIR/upd.ip"
+        echo
+fi
+
+rm -f "$TMPDIR/old.ip"
+mv -f "$TMPDIR/new.ip" "$TMPDIR/old.ip"
+
+exit 0