#!/bin/sh
MYPATH=$1
unset HAVENET

maxPings=1
[ "$2" = "dowait" ] && maxPings=15

count=0
while [ ! "$HAVENET" -a $count -lt $maxPings ]; do
	ping -c 1 -w 1 www.dfn.de  > /dev/null 2>&1 && HAVENET=yes
	[ "$HAVENET" ] || count=$(( $count + 1 ))
done

if [  "$HAVENET" -a "$MYPATH" ]; then
	mkdir -p $MYPATH 2> /dev/null || exit
	ACTION=${MYPATH}/user.action
	FILTER=${MYPATH}/user.filter
	FILE=$(basename ${PRIVOXY_ADBLOCK_URL})
	LIST=${FILE%\.*}
	FILE=/tmp/${FILE}
	rm -f ${FILE}

	wget-gnu --no-check-certificate -qO ${FILE} ${PRIVOXY_ADBLOCK_URL}

	if [ $(cat ${FILE} | wc -l) -gt 100 ]; then
		echo -e "{ +block{${LIST}} }" > ${ACTION}
		sed '/^!.*/d;1,1 d;/^@@.*/d;/\$.*/d;/#/d;s/\./\\./g;s/\?/\\?/g;s/\*/.*/g;s/(/\\(/g;s/)/\\)/g;s/\[/\\[/g;s/\]/\\]/g;s/\^/[\/\&:\?=_]/g;s/^||/\./g;s/^|/^/g;s/|$/\$/g;/|/d' ${FILE} >> ${ACTION}
		echo "FILTER: ${LIST} Tag filter of ${LIST}" > ${FILTER}
		sed '/^#/!d;s/^##//g;s/^#\(.*\)\[.*\]\[.*\]*/s|<([a-zA-Z0-9]+)\\s+.*id=.?\1.*>.*<\/\\1>||g/g;s/^#\(.*\)/s|<([a-zA-Z0-9]+)\\s+.*id=.?\1.*>.*<\/\\1>||g/g;s/^\.\(.*\)/s|<([a-zA-Z0-9]+)\\s+.*class=.?\1.*>.*<\/\\1>||g/g;s/^a\[\(.*\)\]/s|<a.*\1.*>.*<\/a>||g/g;s/^\([a-zA-Z0-9]*\)\.\(.*\)\[.*\]\[.*\]*/s|<\1.*class=.?\2.*>.*<\/\1>||g/g;s/^\([a-zA-Z0-9]*\)#\(.*\):.*[:[^:]]*[^:]*/s|<\1.*id=.?\2.*>.*<\/\1>||g/g;s/^\([a-zA-Z0-9]*\)#\(.*\)/s|<\1.*id=.?\2.*>.*<\/\1>||g/g;s/^\[\([a-zA-Z]*\).=\(.*\)\]/s|\1^=\2>||g/g;s/\^/[\/\&:\?=_]/g;s/\.\([a-zA-Z0-9]\)/\\.\1/g' ${FILE} >> ${FILTER}
		echo "{ +filter{${LIST}} }" >> ${ACTION}
		echo "*" >> ${ACTION}
		echo "{ -block }" >> ${ACTION}
		sed '/^@@.*/!d;s/^@@//g;/\$.*/d;/#/d;s/\./\\./g;s/\?/\\?/g;s/\*/.*/g;s/(/\\(/g;s/)/\\)/g;s/\[/\\[/g;s/\]/\\]/g;s/\^/[\/\&:\?=_]/g;s/^||/\./g;s/^|/^/g;s/|$/\$/g;/|/d' ${FILE} >> ${ACTION}
		echo "{ -block +handle-as-image }" >> ${ACTION}
		sed '/^@@.*/!d;s/^@@//g;/\$.*image.*/!d;s/\$.*image.*//g;/#/d;s/\./\\./g;s/\?/\\?/g;s/\*/.*/g;s/(/\\(/g;s/)/\\)/g;s/\[/\\[/g;s/\]/\\]/g;s/\^/[\/\&:\?=_]/g;s/^||/\./g;s/^|/^/g;s/|$/\$/g;/|/d' ${FILE} >> ${ACTION}
		rm -f ${FILE}
	else
		echo "Fetching files for filter failed (file less than 100 lines)."
	fi
else
	echo -n "Fetching files for filter failed ( "
	[ ! "$HAVENET" ] && echo -n "no net";
	[ ! "$MYPATH" ] && echo -n " no path";
	echo  " )."
fi