RewriteRule E=SMUSER:%{LA-U:REMOTE_USER} works but not E=SMUSER:%{LA-U:SSL_CLIENT_S_DN_EMAIL}

["David (Dave) Donnan" <david.donnan@xxxxxxxxxxxxxxx>]

Hello again. I hope I've not overstayed my welcome.

RewriteRule .* - [E=SMUSER:%{LA-U:REMOTE_USER}] works for both 80 and 443 (SSL)

However, the following doesn't work for either (I understand why it doesn't work for port 80 :-)

RewriteRule .* - [E=SMUSER:%{LA-U:SSL_CLIENT_S_DN_EMAIL}]

Nor the following:

RewriteRule .* - [E=SMUSER:%{LA-F:SSL_CLIENT_S_DN_EMAIL}]      # note L A-F, not LA-U

I've done my reading but have not found the definitive list of supported variables.

I found a table at the following link, search for %{ NAME_OF_VARIABLE  } 

http://httpd.apache.org/docs/current/mod/mod_rewrite.html#rewriterule

Is SSL_CLIENT_S_DN_EMAIL not supported or am I, perhaps, missing something ?

Any help would be greatly appreciated, Dave
-------

David (Dave) Donnan wrote:

Hello everybody.

Eric, thanks for the rapide response. I took the $PATH of least resistance, corrected Technique #1, and now it WORKS !

httpd.conf:
    RewriteEngine on
    RewriteRule .* - [E=SMUSER:%{LA-U:REMOTE_USER}]

Result (setenv.pl):
    ...
    SMUSER="<my-LDAP-userid :-) >"
    ...
Thanks again, Dave

PS: I had no luck with setenvif but I'm more than happy with the RewriteRule.
------

Eric Covener wrote:

On Tue, Sep 28, 2010 at 10:02 AM, David (Dave) Donnan
<david.donnan@xxxxxxxxxxxxxxx> wrote:
  

RewriteEngine on

RewriteRule .* - [E=SMUSER:%{$REMOTE_USER}]
RequestHeader set my_new_header %{SMUSER}e

        Result from my browser (setenv.pl):

        SMUSER=""
    

I think the $ is extraneous and causing problems. Another potential
problem --  See the "lookahead" feature to figure out REMOTE_USER when
your RewriteRules are running in a phase before REMOTE_USER is set!

You may be able to wrap your rules in <Directory>, which makes the
Rewrite occur a little bit later, and might let some rules like this
work better.

Finally, why do you want to set the environment variable in a request
header? Is this just some debug you added along the way, or your
ultimate goal?

  

Question 1: The syntax is incredibly cryptic. Where might I look to help me
understand the %, e, {} etc.
    

The variable syntax for RequestHeader is defined in a table at the
bottom of the Header directive:

http://httpd.apache.org/docs/current/mod/mod_headers.html#header

The syntax for mod_rewrite is midway down in the doc for RewriteRule:
http://httpd.apache.org/docs/current/mod/mod_rewrite.html#rewriterule

  

Mind you, it works for simple text:

RewriteRule .* - [E=SMUSER:test]

Result: SMUSER="test"

2. Technique 2: setenv DAVESETENV "text"
----------------------------------------------

    Result: DAVESETENV="text"

But, I've read that this is only a static string.

http://www.usenet-forums.com/apache-web-server/10179-setenv-dynamic-variable.html
    

setenvif is a bit more flexible:
http://httpd.apache.org/docs/current/mod/mod_setenvif.html#setenvif