15/01/2010

Greek adblock plus filter on the official subscription list

Six months after my original post on the creation of Greek Adblock Plus filter, the filter is finally added on the official subscription list thanks to Wladimir Palant.
Apart from Adblock Plus add-on for Firefox/Iceweasel/etc, the filter is also usable by the AdThwart extension for Google Chrome/Chromium

Until today the list peaked at 70 subscribers…I hope this will make more people trust my filter list and reach at least 100 subscribers.

As a sidenote, my RBL for Greek spam has moved to a new, better server thanks to a very kind person who donated it and some people administering mail servers have already added it to their spam filters. Since the original announcement the RBL jumped from 500 reqs/min to 2000 reqs/min.

* Filed by kargig at 16:19 under Internet,Networking,Privacy
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* 6 Comments | 11,055 views

17/11/2009

Get adblocking back for archivum.info

If you have adblock enabled and you try to visit any url of www.archivum.info you will get a really nasty alert saying:

You Are Using Adblock Plus or some other advert blocking software! Archivum.info relies on advertising for revenue. Please add www.archivum.info to your ad blocking whitelist or disable ad blocking when you visit www.archivum.info.

When I first saw this I laughed…and then I tried to find a way to bypass it.
I used curl to see the sites html code:

$ curl -v www.archivum.info
curl -v www.archivum.info 
* About to connect() to www.archivum.info port 80 (#0)
*   Trying 69.147.224.162... connected
* Connected to www.archivum.info (69.147.224.162) port 80 (#0)
> GET / HTTP/1.1
> User-Agent: curl/7.19.5 (i486-pc-linux-gnu) libcurl/7.19.5 OpenSSL/0.9.8k zlib/1.2.3.3 libidn/1.15 libssh2/1.2
> Host: www.archivum.info
> Accept: */*
> 
< HTTP/1.1 200 OK
< Date: Tue, 17 Nov 2009 11:24:22 GMT
< Server: Apache
< Last-Modified: Mon, 16 Nov 2009 08:41:17 GMT
< Accept-Ranges: bytes
< Content-Length: 9392
< Vary: Accept-Encoding
< Content-Type: text/html
< 
<html>
<head>
<title>archivum.info - The Internet archive.</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<script type="text/javascript">var disabled = false;</script><script type="text/javascript" src="http://www.archivum.info/js/adblocker_probe.js?
site=http://googlead.foobar.tld/"></script><script type="text/javascript">if (disabled == false) { location.replace("http://www.archivum.info/denied");
alert("You Are Using Adblock Plus or some other advert blocking software! Archivum.info relies on advertising
for revenue. Please add www.archivum.info to your ad blocking whitelist or disable ad blocking when you visit
www.archivum.info.");}</script></head>

[snip]

Here’s how this site blocks Adblockplus: there’s a variable called disabled set to “false” then if a js (http://www.archivum.info/js/adblocker_probe.js) runs it sets disabled to “true” . The hint is that adblockplus blocks urls starting with “googlead.” so it won’t visit “http://www.archivum.info/js/adblocker_probe.js?site=http://googlead.foobar.tld/” and the variable will remain “false“. Then the alert pops up.

The solution is very simple, just add an exception to your local AdblockPlus rules, AdblockPlus Preferences -> Add Filter:
@@|http://www.archivum.info/js/adblocker_probe.js?site=http://googlead.foobar.tld/

So firefox, visits the js url, disabled becomes “true” you are allowed to continue browsing the site and AdblockPlus continues blocking all blockable items.

* Filed by kargig at 14:14 under Internet,Linux
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No Comments | 5,562 views