[ILUG] Re: Apache and perl

[Francis Daly]

On 31/05/06, David Power <dlpower at epoc.ie> wrote:

Hi there,

>         I have a problem getting perl to work with apache. I have
> googled and can get no solution.

You don't say how you got php to work. Is the problem "perl", or "cgi"?
Try the following as "env.cgi" and see what it produces:

==
#!/bin/sh
echo Content-type: text/plain
echo
set
==

> http://localhost/printenv.pl gives me:
> <h1>Internal Server Error</h1>
> <p>The server encountered an internal error or
> misconfiguration and was unable to complete
> your request.</p>

> <p>Additionally, a 500 Internal Server Error
> error was encountered while trying to use an ErrorDocument to handle the
> request.</p>

Note that there are two errors reported there; you'll probably want to
fix both of them.

> running   perl /var/www/html/printenv.pl  as user outputs all the env
> variables in plain text

What does running

/var/www/html/printenv.pl

output? And when you do it as the same user that apache is configured
to run cgi scripts as? And when you do it in the same environment that
apache uses?

Trailing characters on the shebang line is one possibility. suexec and
SELinux are others.

Are either in use on your server?

> Examining the apache logs gives:
>
> (13) Permission denied: exec of '/var/www/html/printenv.pl'
>         Premature end of script headers: printenv.pl

That says that apache did not successfully run the script. The above
tests will show if you can run the script in the same way that apache
is trying to. If you have an suexec log file, there might be secrets
revealed there too.

> What have I done wrong? Could anyone help me out .

If these checks give no hints, then pointers to config files and
loaded or builtin modules and version numbers will probably be useful.

All the best,

	f