Karel Kubat wrote:
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Hi,
On Feb 12, 2009, at 8:59 AM, Jürgen Mathwich wrote:
I 've got a problem regarding apache's environ handling. I know about
the usage of SetEnv and
PassEnv. To use them I have to know the key/name of every single
environ variable.
When doing a
# cat /proc/<APACHE-PID>/environ
it shows me more variables than the cgi knows about. Now I have a
project where I need to pass all
the vars without knowing their keys to the cgi (just ALL of them), but
I don't have any idea how to
solve this in a easy way.
Maybe some of you had a similar problem in the past and know how to
solve it.
This will depend on the platform of your CGI programs. E.g., in Perl
there is the hash %ENV. In C there is the third argument to main(),
**envp. In shell script you can use your above way, but more portable is
running /usr/bin/env.
Hi.
I don't think that works.
It is Apache who decides which of the environment values *of Apache*.
gets passed to the cgi-bin environment. The cgi-bin script then only
sees *these* environment values.
So whatever you do in the cgi-bin script (no matter which language it is
written in), is never going to show you more than what Apache passes on.
To take the problem from the other end : by default, Apache only passes
some environment values to cgi-bin scripts. Those are the ones defined
by the cgi-bin specs (such as DOCUMENT_ROOT etc..). The reasons for
that are linked to security and to the cost of setting up that environment.
To force Apache to pass more values, exist the (static) configuration
directives PassEnv and SetEnv. But as the OP says, this means you have
to know in advance which environment values you want to pass.
I don't think that there is a way to do otherwise, and maybe rightly so.
Now the real question is, what kind of project would require ALL Apache
environment values to be made available to the cgi-bin script ?
I mean, if you don't even know the name of an environment variable of
Apache, then why would you need the cgi-bin to get its value ?
In other words, what are you going to do with it, if you don't even know
what it's for ?
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