DD-WRT Adblock Plus to Privoxy

Download and convert Adblock Plus Filters to Privoxy Action- and Filterfiles for DD-WRT Builds above 25000 and Kong's older Builds back to 23900 OLD

Based on the Original Script for OpenWRT by Andrwe:
http://andrwe.org/scripting/bash/privoxy-blocklist

Modified to be used without Optware or any additional binaries.

Changelog

152103-1

• Adblock lists stored in variable making easier to modify
• Corrected some grammar issues
• Rewrote installation instructions

151012-1

• Moved to Github
• Fixed some Syntax Errors (possibly - tested with shellcheck.net). Please update to the newest version

141012-1

• Added Domain-Based Blocking
• Fixed Regex for whitelisting (now properly working)

142711-1

• Initial Release
• Fixed Regex from original Script that would prevent the Filter and Actionlists from working
• Changed binaries that are used to be compatible with DD-WRT 25408 and similar

Requirements:

• DD-WRT Build BS 25408+, Kong 23900+ or similar
• Privoxy compiled into firmware (/usr/sbin/privoxy)
• JFFS Partition - http://www.dd-wrt.com/wiki/index.php/Journalling_Flash_File_System

Install Instructions:

Start by creating the initial folders to hold the Privoxy files. You'll need to access your router via telnet/SSH. The quickest way to get setup is copy the default Privoxy configuration files provided in the DD-WRT firmware from /etc/privoxy

mkdir -p /jffs/etc/privoxy
mkdir -p /jffs/tmp
cp -r /etc/privoxy/* /jffs/etc/privoxy
cd /jffs

Grab the latest version of privoxy-blocklist.sh, the easiest way to do this is using curl

curl -k -O https://raw.githubusercontent.com/jamesmacwhite/ddwrt-adbp-to-privoxy/master/privoxy-blocklist.sh

Due to the wget package not being compiled with SSL support in DD-WRT, you will be unable to wget files under a domain using https

1. chmod +x privoxy-blocklist.sh

2. sh privoxy-blocklist.sh

3. Enable Privoxy in the DD-WRT web interface under Services -> Adblocking by setting the radio button to Enable. In addition you will need to enable Custom Configuration.

4. For convenience you may also want to use Transparent Mode. This mode will create a iptables rule that redirects all traffic on port 80 through Privoxy. Doing this means you don't need to configure each client to point to the proxy via [x.x.x.x]:8118, all traffic will be redirected automatically. Note this is port 80 traffic only. Connections via SSL will not be included in this scope.

5. Initially it be might a good idea to not enable transparent mode and perform tests in a browser with the proxy manually specified as any problems with Privoxy with transparent mode on will likely interrupt your internet connection for all clients.

6. For the best use of Privoxy configuring the HTTP proxy at the system level will provide the best functionality and will cover SSL connections as well. This however can be difficult with lots of clients unless you can force such settings through a group policy or something to that nature.

7. Make sure CONFDIR is pointing to the place where you store your filters and action files. - Default: /jffs/etc/privoxy

8. Add all Filter and Actionlists to your Custom Configuration like this (for each AdblockPlus-List one Filter- and one Actionlist will be generated):

Click Save followed by Apply Settings

Wait a bit (approx. 5 minutes) - now Privoxy should be restarted including your Adblock Plus Filters and Actions. You can verify this under [http://config.privoxy.org/show-status] (you can only access this page if you're using Privoxy).

It should look similar to this:

Configuration (in privoxy-blocklist.sh):

Modify the following vars to your needs:

CONFDIR=/jffs/etc/privoxy - Path to Privoxy configuration folder

TMPDIR=/jffs/tmp/privoxy-blocklist - Path to the temp folder for building the blocklists

ADBLOCKLISTS=" \
https://easylist-downloads.adblockplus.org/easylist.txt \
https://easylist-downloads.adblockplus.org/antiadblockfilters.txt \
https://easylist-downloads.adblockplus.org/malwaredomains_full.txt"

Add additional Adblock lists using a backslash to denote a new line

Usage:

sh privoxy-blocklist.sh - every time you want to update the lists (see install instructions above)