User web pages on web-docs.gsi.de

As a Linux user at GSI you may create your own web pages on web-docs.gsi.de. The pages will be available world-wide as http://web-docs.gsi.de/~userid/.

This location corresponds to the web-docs/ subdirectory in your home directory (/u/userid/ or /misc/userid/), which is in fact a symlink to /WWW/userid/ that is in turn auto-mounted from the corresponding NFS server.

When you put a html file called index.html in this directory, it will be automatically accessible as http://www-linux.gsi.de/~userid/.

A good online reference for HTML is http://www.selfhtml.org/ (available in German, French, Spanish and Japanese, but only partly in English).

Usage notes

• For stability reasons no central FileSystems are accessible from the web server.
• Quotas: the size limit for each individual web-docs is 3 GiB.

CGI scripts

You may also put shell, perl or python scripts or even binary executables inside your web-docs. These scripts will be executed by the web server as long as they have a .cgi, .pl or .py extension and have proper permissions i.e. file and the containing directory must be writable to the owner exclusively.

The scripts will be executed with the privileges of the account they belong to. There's a 5 minute limit on the total CPU usage for each script (as we had some nasty infinite loops in the past).

PHP

You can put PHP files in your web-docs. They will be run with the your own privileges like other CGI scripts.

Restricting HTTP access to your web-docs

You can restrict the access to your web-docs via .htaccess files - webserver config sniplets that apply to the directory they reside in and its subdirectories.

Limiting access by IP

To limit the access to your web-docs to GSI machines put this into your .htaccess

Order deny,allow
Allow from .gsi.de
Deny from All

Add authentication to your web-docs

Put this in our .htaccess

AuthType Basic
AuthName "Descriptive text shown in the authentication dialog"
AuthUserFile .htpasswd
Require valid-user

Then create the password file .htpasswd in the same directory with htpasswd -c .htpasswd username. You'll be prompted for the password.

For further information please have a look at http://httpd.apache.org/docs/current/howto/auth.html

-- ChristopherHuhn - 2005 - 2012