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Introduction:
As many of you know, WordPress®launched some time ago their system WordPress MU (Wordpress Multi User). This system is an altered version of the original WordPress system, which allows you to create a website in which you may host “countless” Users and each one of them may have one or more WordPress Blogs independent one from the other. As an example you may visit EterBlogsThe system allows any person to register and create one or more users and at the same time one or more Blogs per user, the problem is that the registration system does not have any type of CAPTCHA* checking, therefore, allowing any Robot (Boot, Spider or as you wish to call it) may enter your page and create Users and Blogs-Spamers. This lack of protection can cause many problems, since you will have hundreds or even thousands of Blogs making publicity (spam) in your wordpress system.
Examples of Catpchas
The amount of companies (specially chinese and northamerican) dedicated to this type of illegal publicity are too many and it seems they are growing every day creating new and more sophisticated robot systems that register blogs in public sites, and which makes more difficult and tedious the task of managing and maintaining a site created with WordPress MU.The problem is not only having to manually eliminate or label these Blogs as spam or Users as spammers, since, if we wish we can just leave them there, but the increasement of resources in the server could become quite worryngly, since the size of your database will sep growing enormously and exponentially, the amount of consultation to the database MySQL will also get increased and obviously the space of your hard disk, the use of the Microprocesor and of course the bandwith consumed by these trash blogs.
The solution:
Integrate a Captcha* system is practically the perfect solution. The problem is that WordPress does not integrate this system to its free version of WordPress MU, in fact, not even in their official system in wordpress.com. So, after looking for some plugin or hack that would incorporate a captcha in wordpress mu and not finding any solution, I decided to program my own script captcha and some hacks for EterBlogs and make it available to those who would like to integrate it to their wordpress sites; it is worth mentioning that this script may be used in any other web system. The name of the script is wp-captcha, since it was originally griten for WordPress MU and since the system may be integrated in any type of webpage, be it a CMS, Script or Plugin that uses a formulary; I decided to keep the name but referring to Widespread Public - Captcha
Installing:
From the shell
1.- Enter the root directory of your WordPress MU
2.- Download wp-captcha
# wget http://digitalsoftproject.com/software/wp-captcha/wp-captcha_01.zip
3.- Decompress the file wp-catpcha.zip
#unzip wp-captcha
4.- Enter the folder wp-captcha and move the files wp-captcha.php, wp-captcha.jpg and VeraMoBd.ttf to the root of your wordpress and if you want to eliminate the directory wp-captcha and the file wp-captcha.zip
# cd wp-captcha
# mv wp-captcha.* ../
# mv VeraMoBd.ttf ../
# cd ..
# rm -fr wp-captcha
# rm -f wp-captcha.zip5.- Edit with nano vi or your favorite editor the files wp-signup.php, wp-includes/wpmu-functions.php y wp-activate.php as indicated in file wpmu-captcha-english-README.TXT
Via FTP
1.- Download wp-captcha from here
2.- Decompress the file wp-captcha.zip
3.- Copy files wp-captcha.php and wp-captcha.jpg and VeraMoBd.ttf to the root directory of your Wordpress MU
4.- Edit files wp-signup.php, wp-includes/wpmu-functions.php and wp-activate.php as indicated by the file wpmu-captcha-english-README.TXT
Licence:
wp-captcha is a free software and is distributed under license GPL (General Public License)Suggestions:
Cany sugestión comment, critics, etc. may be made here or sent by e.mail to oscar.rovira@gmail.com
Donations:
If you like this script and has been useful to you, you may make a contribution through paypal, account oscar@digitalsoftproject.com
https://www.paypal.com/cgi-bin/webscr?cmd=_xclick&business=oscar%2erovira%40gmail%2ecom&item_name=wp%2dcaptcha&no_shipping=0&no_note=1&tax=0¤cy_code=USD&lc=MX&bn=PP%2dDonationsBF&charset=UTF%2d8
*Completely Automated Public Turing test to tell Computers and Humans Apart (Prueba de Turing pública y automática para diferenciar a máquinas y humanos).
