DNS blocking script

[Travison]

A daily crontab can be used to run and update the list daily.

You need to add the line "addn-hosts=/jffs/block.hosts" in /etc/dnsmasq.conf for blocking to work. I used the web interface to add additional hosts file so it will be saved in reboots. Not sure if you manually add the line in command if it will be saved upon reboot.

But to manually add it you can run this command (not sure if it will be saved in next reboot, safer to use web interface and add it there):
echo "addn-hosts=/jffs/block.hosts" >> /etc/dnsmasq.conf

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#!/bin/sh

# This scripts gathers lists from various sources used for DNS blocking.

# Grab lists from mvps.org / hosts-file.net / yoyo.org / someonewhocares.org and malwaredomainlist.com.
# Replaces 127.0.0.1 with 0.0.0.0 or adds 0.0.0.0 to the list.

wget -qO- http://www.mvps.org/winhelp2002/hosts.txt | awk '/^0.0.0.0/' >> /tmp/block.build.list
wget -qO- http://www.malwaredomainlist.com/hostslist/hosts.txt | awk '{sub(/^127.0.0.1/, "0.0.0.0")} /^0.0.0.0/' >> /tmp/block.build.list
wget -qO- "http://hosts-file.net/.\ad_servers.txt" | awk '{sub(/^127.0.0.1/, "0.0.0.0")} /^0.0.0.0/' >> /tmp/block.build.list
wget -qO- "http://hosts-file.net/.\exp.txt" | awk '{sub(/^127.0.0.1/, "0.0.0.0")} /^0.0.0.0/' >> /tmp/block.build.list
wget -qO- "http://hosts-file.net/.\emd.txt" | awk '{sub(/^127.0.0.1/, "0.0.0.0")} /^0.0.0.0/' >> /tmp/block.build.list
wget -qO- "http://pgl.yoyo.org/as/serverlist.php?showintro=0;hostformat=hosts" | awk '{sub(/^127.0.0.1/, "0.0.0.0")} /^0.0.0.0/' >> /tmp/block.build.list
wget -qO- http://someonewhocares.org/hosts/zero | awk '/^0.0.0.0/' >> /tmp/block.build.list

# Add your custom list, if you have one then uncomment next line.
#cat /jffs/custom.list >> /tmp/block.build.list

# Remove duplicate lines, ascii coded lines and sort into alphabetical order into block.hosts.
awk '{sub(/\r$/,"");print $1,$2}' /tmp/block.build.list | sort -u > /jffs/block.hosts

# Cleanup.
rm /tmp/block.build.list

# Restart DNSMASQ.
service restart_dnsmasq