Hi Rainer,
thanks for the enlightenment :-) I was not aware, that the RewriteRule
check is done before actually evaluating the RewriteCond(s). So, out of
curiosity I gave it a try. As I only need to look for the GET request on
the login-page, this works fine for me:
RewriteCond "%{REQUEST_METHOD}" "GET"
RewriteRule ^/xxx/facelets/logon.xhtml$ - [E=login_jsid:%{HTTP_COOKIE}]
Surprisingly, here I can use a variable in the assignment to "login_jsid"
:-) Otherwise, this would have worked as well:
RewriteCond "%{REQUEST_METHOD}" "GET"
RewriteCond "%{HTTP_COOKIE}" "(.*)"
RewriteRule ^/xxx/facelets/logon.xhtml$ - [E=login_jsid:%1]
Clearly, the logging is now much better than with the "forensic" stuff. Now
to the main task :-)
Cheers
Martin
On Thu, Mar 22, 2018 at 8:28 PM, Rainer Jung <[email protected]>
wrote:
> Am 22.03.2018 um 18:56 schrieb Martin Knoblauch:
>
>> Hi Rainer,
>>
>> unfortunately mod_log_debug seems to work only on directory scope, not
>> on virtual host.
>>
>
> But note, that <Location> is directory scope, for instance
>
> <Location /cb2/facelets/logon.xhtml>
> ...
> </Location>
>
> And I considered the mod_rewrite thingy, but feared it to be to expensive.
>>
> >
>
>> In the meantime I found "mod_log_forensic". Ugly, I do not know the
>> cost, but it works for my purpose.
>>
>
> I think mod_rewrite is not that expensive.
>
> When a RewriteCond and a RewriteRuke is combined, it will first check the
> left side of the RewriteRule against your URL. If it doesnt match, the
> RewriteCond and the flags are not evaluated. So it is important to not have
> a complex pattern in RewriteRule. In your case it is not complex.
>
> Then next te RewriteCond is checked. In your case picking one header and
> matching with ".*" which is also not very expensive (not backtracking).
>
> And then finally the env var setting. Performancewise this will be very
> close to the SetEnvIf variant.
>
> Regards,
>
> Rainer
>
> Thanks
>> Martin
>>
>> On Thu, Mar 22, 2018 at 6:16 PM, Rainer Jung <[email protected]
>> <mailto:[email protected]>> wrote:
>>
>> Am 22.03.2018 um 18:08 schrieb Eric Covener:
>>
>> On Thu, Mar 22, 2018 at 1:03 PM, Martin Knoblauch
>> <[email protected] <mailto:[email protected]>> wrote:
>>
>> Hi Eric,
>>
>> thanks, but does not work.
>>
>> login_jsid=Cookie prints "Cookie"
>> login_jsid=%{Cookie} prints "%{Cookie}"
>>
>> Apparently the right sides of the assignment are just taken
>> as literals
>> without evaluating them as variables.
>>
>>
>> Arg, sorry, It is only for the first arg.
>>
>> Had a brief look at mod_log_debug, but do not see how it
>> helps me in this
>> case.
>>
>>
>> You could log expressions before/after the your edits.
>>
>>
>> ... by choosing different hooks.
>>
>> If that does not work, you could also try to copy the header to an
>> env var using mod_rewrite. Something like
>>
>> RewriteCond "%{HTTP_COOKIE}" "(.*)"
>> RewriteRule ^/cb2/facelets/logon.xhtml$ - [E=login_jsid:%1]
>>
>> But you need to test. Not sure in what order the mod_headers
>> replacement and the mod_rewrite rule handling run. I vaguely
>> remember having used a trick like this.
>>
>> Including your marker login_get should work like this:
>>
>> RewriteCond "%{HTTP_COOKIE}" "(.*)"
>> RewriteRule ^/cb2/facelets/logon.xhtml$ -
>> [E=login_jsid:%1,E=login_get]
>>
>> Regards,
>>
>> Rainer
>>
>>
>>
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>>
>>
>>
>> --
>> ------------------------------------------------------
>> Martin Knoblauch
>> email: k n o b i AT knobisoft DOT de
>> www: http://www.knobisoft.de
>>
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Martin Knoblauch
email: k n o b i AT knobisoft DOT de
www: http://www.knobisoft.de
