Adblock skript for OpenWrt. Tested on Attitude Adjustment 12.09

adblock

#!/bin/sh /etc/rc.common

# Copy this skript to /etc/init.d/adblock and enable:
#   chmod +x /etc/init.d/adblock
#   /etc/init.d/adblock enable

START=90

ADS='http://pgl.yoyo.org/as/serverlist.php?hostformat=dnsmasq&showintro=0&mimetype=plaintext'

WWW2="/tmp/www2"
GIF1="1.gif"

DM_CONF=/var/etc/dnsmasq.conf
DM_BAD=/var/etc/dnsmasq.bad

ssd=start-stop-daemon

UPID1=/var/run/uhttpd_main.pid
UPID2=/var/run/uhttpd_www2.pid
UH=/usr/sbin/uhttpd

start() {
	mkdir -p $WWW2
	echo -ne 'GIF89a1010\x8000\xff\xff\xff000!\xf9\x0400000,000010100\x02\x02D10;' | tr 01 '\000\001' > $WWW2/$GIF1

	# Choose an unused IP
	ip=$(uci get network.lan.ipaddr)
	ip2=10.3.5.3
	case $ip in 10.3.*) ip2=10.4.6.4 ;; esac
	ifconfig br-lan:1 inet $ip2 netmask 255.255.255.255

	# Restart uhttpd to listen only LAN
	if [ -f "$UPID1" ]; then
		uargs="$(cat /proc/$(cat $UPID1)/cmdline | tr '\000' ' ' | cut -d ' ' -f 2- )"
		if echo "$uargs" | grep -q '0.0.0.0'; then
			uargs=$(echo $uargs | sed -e "s/0\.0\.0\.0/$ip/")
			$ssd -Kqs HUP -p $UPID1
			sleep 1
			$ssd -Sqbmp $UPID1 -x $UH -- $uargs
		fi
	fi

	# Start another uhttpd
	$ssd -Sqbmp $UPID2 -x $UH -- -f -h $WWW2 -E /$GIF1 -I $GIF1 -p $ip2:80

	# Add rules to dnsmasq
	wget -qO $DM_BAD "$ADS" && sed -i -e "s/127\.0\.0\.1/$ip2/" $DM_BAD
	if [ -f $DM_CONF -a -f $DM_BAD ] && ! grep -q $DM_BAD $DM_CONF; then
		$ssd -Kqn dnsmasq
		sleep 1
		echo "conf-file=$DM_BAD" >> $DM_CONF
		$ssd -Sqx dnsmasq -- -C $DM_CONF
	fi
}

stop() {
	$ssd -Kqs HUP -p $UPID2
}

and is you are puttting some comments that will be cool.

this have some more optional https://forum.openwrt.org/viewtopic.php?id=35023&p=2

Thanks for feedback! I tried specifically to be terse in comments, to keep the script small. In case you have questions about specific parts of the script I'm glad to answer them in OpenWRT thread you mentioned. Suggestions about good quality (but compact) blacklists are also welcome.

Thanks!
Here is my suggestion https://gist.github.com/someon/9609363
This script run in background and updates bad hosts list every 6 hours.