ALL-U-NEED AdBlocking By YAQUI for openwrt

## ALL-U-NEED AdBlocking By YAQUI 5/1/09
## Dnsmasq Ed. v2.92
##
## Code optimizations Oct 9 2009
## idea by ng12345 / implemented by srouquette
##
## slightly modified Nov 7 2009 - Groosh
## autoupdate on, intel.com added to whitelist, s3 added, s4 removed, pdl.yoyo.org url chng, ADBLOCK.sh removed, single cln, added more logging, chng function flow, temp file removed from clr
##
## some modification for working with openwrt backfire
##

sleep 20

#!/bin/sh

## EDITABLE VARIABLES
GETS="1 2 3"
S1="http://www.mvps.org/winhelp2002/hosts.txt"                           # ~612K
S2="http://pgl.yoyo.org/as/serverlist.php?showintro=0;hostformat=hosts"  # ~72K
S3="http://someonewhocares.org/hosts/hosts"                              # ~208K
# Enter sites in format below
WHITE="intel.com"

## DO NOT EDIT BELOW
NIP="0.0.0.0"
GEN="/tmp/gen"
TMP="/tmp/temp"

## FUNCTIONS
CLR ()
{
rm -f $GEN
touch $GEN
logger ADBLOCK Clearing TEMP Files
}

FMEM ()
{
/etc/init.d/dnsmasq stop
killall -9 dnsmasq
logger ADBLOCK Unloading Dnsmaq From Memory
}

DS ()
{
##(Inline grep for 127.0.0.1 & Delete DOS Format Returns)
for i in $GETS; do
eval url="\$S$i"
if wget $url -O - | grep 127.0.0.1 | tr -d "\r" >> $GEN; then
logger ADBLOCK Retrieved $url
else
logger ADBLOCK ERROR Retriving $url
fi
done
}

CLN ()
{
sed -i -e 's/[[:cntrl:][:blank:]]//g' $GEN
sed -i -e '/\#.*$/ s/\#.*$//' $GEN
sed -i -e '/\[.*\]/ s/\[.*\]//' $GEN
sed -i -e '/^$/d' $GEN
sed -i -e '/127\.0\.0\.1/ s/127\.0\.0\.1//' $GEN
sed -i -e '/^www[0-9]*\./ s/^www[0-9]*\.//' $GEN
sed -i -e '/^[0-9]*www[0-9]*\./ s/^[0-9]*www[0-9]*\.//' $GEN
sed -i -e '/^www\./ s/^www\.//' $GEN
sed -i -e '/</d' $GEN
sed -i -e 's/^[ \t]*//;s/[ \t]*$//' $GEN
cat $GEN | sort -u > $TMP
mv $TMP $GEN
rm -f $TMP
logger ADBLOCK Blacklist Scrubbed
}

FDNSM ()
{
sed -i -e 's|$|/'$NIP'|' $GEN
sed -i -e 's|^|address=/|' $GEN
logger ADBLOCK Blacklist Alignment
}

LCFG ()
{
cat /etc/dnsmasq.conf >> $GEN
logger ADBLOCK Dnsmasq Config Applied
}

LWHT ()
{
for site in $WHITE
do
sed -i -e "/$site/d" $GEN
done
logger ADBLOCK Whitelist Applied
}

LBLK ()
{
dnsmasq --conf-file=$GEN
logger ADBLOCK Launching Dnsmasq With Blacklist
sleep 15
FS
}

FS ()
{
if ps | grep -E "dnsmasq" | grep -E "nobody"; then
logger ADBLOCK Dnsmasq with Blacklist RUNNING
else
logger ADBLOCK Dnsmasq NOT Running starting Dnsmasq without Blacklist
service dnsmasq stop
killall -9 dnsmasq
dnsmasq
fi
}

TST ()
{
if sed -n -e '/^address=\/ad\..*\..*\/0\.0\.0\.0$/p' $GEN; then
TOT=`wc -l $GEN | cut -d" " -f5`
logger ADBLOCK Blacklist Format PASS
logger ADBLOCK Blacklist Contains $TOT Entries
LBLK
else
logger ADBLOCK Blacklist Format ERROR
FS
fi
}

AUP ()
{
if [[ "$(cru l | grep AdUpd | cut -d "#" -f2)" != "AdUpd" ]]; then
## cru (a)dd <name> "min hr day mo wkday <cmd>"
## min=0-59 hour=0-23 day=1-31 month=1-12 sun=0 *=all
cru a AdUpd "30 3 * * 2 /tmp/script_wanup.sh >/dev/NULL 2>&1"
logger ADBLOCK AutoUpdate added to Cron
fi
}

## Run Functions
CLR
DS
FMEM
CLN
FDNSM
LCFG
LWHT
TST ## Launches LBLK and/OR FS
CLR
#AUP