Shantibhushan Naik

Tag: ssi

  • Server upgraded to new Ubuntu 9.04 server

    The website is up, and running on a brand new OS – Ubuntu 9.04 Server. Supercool to configure, has pre-configured LAMP, OpenSSH out-of-the-box.
    Using the UFW was too easy than messing with iptables, or routing.
    Feeling great having refreshed up my home server with a mature OS.

  • Stunning Acrobats

    Awesome acrobats… impressive!

  • Undressing?

    WHOOOPS! What did happen?

  • PHP code obfuscation possible?

    Today at my project, I was faced with a simple question from the client – How do you ensure that your PHP code is not tampered?

    Honestly, I had no answer. 🙁

    The only ray of hope I thought was – Since PHP is interpreted, is there some compressing, or obfuscating tool out there that can help me?

    One possible solution I came across was encrypting your logic entirely so as unreadable to humans

    http://www.abhishektripathi.com/encrypting-footer-links-free-theme-developers-take-notice/

    Is this failsafe? Can it be still reverse engineered, and original source obtained to defeat the original purpose of protecting your code?

    Anyone to help out there?

  • Using Apache’s mod_rewrite on Windows

    I recently happened to experiment with Apache’s mod_rewrite, an excellent library to change your machine friendly (or perhaps program friendly?) web urls into user friendly urls.

    The steps to make mod_rewrite to work on Windows is-
    – Edit httpd.conf for Apache, and uncomment the following line
    # LoadModule rewrite_module modules/mod_rewrite.so
    -to-
    LoadModule rewrite_module modules/mod_rewrite.so

    – Next, under <Directory “{Your document root}“> change
    AllowOverride None
    -to-
    AllowOverride All

    – Restart Apache

    – Create a sample folder “rewrite” under {Your document root}, with the following files
    {Your document root}
          rewrite
        .htaccess
        details.php

    – What we will attempt now is to have a url like http://localhost/rewrite/details/shantibhushan to be automatically executed as http://localhost/rewrite/details.php?user=shantibhushan

    – Edit your .htaccess file as follows
    <IfModule rewrite_module>
     RewriteEngine on
     RewriteBase /rewrite/
     RewriteRule ^details/(.+)$ details.php?user=$1 [L]
    </IfModule>

    – The RewriteRule is the actual line where we specify what url is to be mapped to which actual url. ^details/(.+)$ takes a user friendly url /details/shantibhushan and extracts “shantibhushan” as $1. It then replaces $1 into details.php?user=$1 resulting in details.php?user=shantibhushan as the actual url.

    – Edit details.php as follows
    <?php
    $user= $_REQUEST[‘user’];
    print(“<h1>$user</h1>”);
    ?>

    – The above sample simply takes “user” from details.php?user={user} and shows it back.

    – Done! Try accessing http://localhost/rewrite/details/shantibhushan and you should see details.php getting called with parameter as “shantibhushan”

    TODO
    – Simply accessing details/ results in error, and rewrite rule doesn’t assume such a case. It can be handled by RewriteCond
    – First I wanted to have details:shantibhushan as the url, but this has a bug on Windows not allows : in path. It seems to work fine on non-Windows.
    – The example assumes Apache is running on port 80 on your machine.