[for-15.05] ddns-scripts: backport of 2.7.6-10

Backport of current version 2.7.6-10
- more services
- more functionality
- be prepared for next versions

compiled ipk-packages available at
https://github.com/chris5560/OpenWrt-Backports/tree/master/for-CC15.05.01/ddns-scripts_2.7.6-10

Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>

net/ddns-scripts/tools/public_suffix_list.sh

@@ -0,0 +1,39 @@
+#!/bin/sh
+
+URL="https://publicsuffix.org/list/public_suffix_list.dat"
+TMPFILE=$(dirname $0)/public_suffix_list.tmp
+DATFILE=$(dirname $0)/public_suffix_list.dat
+
+wget -O $TMPFILE $URL || exit 1
+
+# there might be backslashes (at line end they produce problems)
+sed -i 's/\\//g' $TMPFILE
+
+# clear DATFILE if exist
+printf %s "" > $DATFILE
+L=0; M=0
+export CHARSET=UTF-8	# needed for idn
+cat ${TMPFILE} | while read LINE; do
+	L=$(( L + 1 ))
+	printf "\\r\\t%s\\t%s" "in: $L   " "out: $(( $L + $M ))   "
+	printf %s\\n "$LINE" | grep -E "^\/\/" >/dev/null 2>&1 && {
+		# do not modify lines beginning with "//"
+		printf %s\\n "$LINE" >> $DATFILE
+		continue
+	}
+	printf %s\\n "$LINE" | grep -E "^$" >/dev/null 2>&1 && {
+		# do not modify empty lines
+		printf %s\\n "$LINE" >> $DATFILE
+		continue
+	}
+	ASCII=$(idn -a "$LINE")	# write ASCII and UTF-8
+	if [ "$ASCII" != "$LINE" ]; then
+		printf %s\\n "$ASCII" >> $DATFILE
+		printf "\\t%s\\n" "add: $ASCII"
+		M=$(( M + 1 ))
+	fi
+	printf %s\\n "$LINE" >> $DATFILE
+done
+rm -f $TMPFILE
+#gzip -f9 $DATFILE
+