Re: Rewrite Rule help

On Wed, Sep 17, 2008 at 2:49 PM, Yoom Nguyen <yoom@hostwebase.com> wrote:

>
> DocumentRoot /srv/www/maintenance/
>
> RewriteEngine on
> RewriteCond %{REQUEST_METHOD} ^(TRACE|TRACK)
> RewriteRule .* -[F]
>
> RewriteRule ^/(.*)$ maintenance.html [R=302,NC,L]


Add a / before maintenance.html, and Protect the rule by preceding it
with RewriteCond %{REQUEST_URI} !=/maintenance.html

(you can do the latter via your regex, but it's usually simpler to
guard it the other way)


--
Eric Covener
covener@gmail.com

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2008/9/17 Eric Covener <covener@gmail.com>:
> On Wed, Sep 17, 2008 at 2:49 PM, Yoom Nguyen <yoom@hostwebase.com> wrote:
>
>>
>> DocumentRoot /srv/www/maintenance/
>>
>> RewriteEngine on
>> RewriteCond %{REQUEST_METHOD} ^(TRACE|TRACK)
>> RewriteRule .* -[F]
>>
>> RewriteRule ^/(.*)$ maintenance.html [R=302,NC,L]
>
>
> Add a / before maintenance.html, and Protect the rule by preceding it
> with RewriteCond %{REQUEST_URI} !=/maintenance.html
>
> (you can do the latter via your regex, but it's usually simpler to
> guard it the other way)
>
>
> --
> Eric Covener
> covener@gmail.com
>
> ---------------------------------------------------------------------
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>

Hi Eric....just a question....what do you accomplish by that
protecting rule you recommend?
Just curious...

Thanks

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Eric Covener wrote:
> On Wed, Sep 17, 2008 at 2:49 PM, Yoom Nguyen <yoom@hostwebase.com> wrote:
>
>> DocumentRoot /srv/www/maintenance/
>>
>> RewriteEngine on
>> RewriteCond %{REQUEST_METHOD} ^(TRACE|TRACK)
>> RewriteRule .* -[F]
>>
>> RewriteRule ^/(.*)$ maintenance.html [R=302,NC,L]
>
>
> Add a / before maintenance.html, and Protect the rule by preceding it
> with RewriteCond %{REQUEST_URI} !=/maintenance.html
>
> (you can do the latter via your regex, but it's usually simpler to
> guard it the other way)
>
>
RewriteRule !^/maintenance\.html$ /maintenance.html [R=302,NC,L]
?

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Eric,

That was it, I need that RewriteCond.
Thank you so much for your help.

Y



----- Original Message -----
From: "Eric Covener" <covener@gmail.com>
To: users@httpd.apache.org
Sent: Wednesday, September 17, 2008 3:40:15 PM (GMT-0500) America/New_York
Subject: Re: [users@httpd] Rewrite Rule help

On Wed, Sep 17, 2008 at 2:49 PM, Yoom Nguyen <yoom@hostwebase.com> wrote:

>
> DocumentRoot /srv/www/maintenance/
>
> RewriteEngine on
> RewriteCond %{REQUEST_METHOD} ^(TRACE|TRACK)
> RewriteRule .* -[F]
>
> RewriteRule ^/(.*)$ maintenance.html [R=302,NC,L]


Add a / before maintenance.html, and Protect the rule by preceding it
with RewriteCond %{REQUEST_URI} !=/maintenance.html

(you can do the latter via your regex, but it's usually simpler to
guard it the other way)


--
Eric Covener
covener@gmail.com

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On Wed, Sep 17, 2008 at 4:02 PM, André Warnier <aw@ice-sa.com> wrote:
>> (you can do the latter via your regex, but it's usually simpler to
>> guard it the other way)
>>
>>
> RewriteRule !^/maintenance\.html$ /maintenance.html [R=302,NC,L]

It quickly gets unamangeable as you need to add captures (putting you
into the realm of lookahead/lookbehind) and 2nd/3rd/4th escape hatches

--
Eric Covener
covener@gmail.com

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Eric Covener wrote:
> On Wed, Sep 17, 2008 at 4:02 PM, André Warnier <aw@ice-sa.com> wrote:
>>> (you can do the latter via your regex, but it's usually simpler to
>>> guard it the other way)
>>>
>>>
>> RewriteRule !^/maintenance\.html$ /maintenance.html [R=302,NC,L]
>
> It quickly gets unamangeable as you need to add captures (putting you
> into the realm of lookahead/lookbehind) and 2nd/3rd/4th escape hatches
>
Now, come on. I was answering this particular one, in which there are no
captures nor any necessary. My solution is one line, yours is two; mine
does not have to backtrack to the RewriteCond, yours does; regexpes are
fast; and there is certainly some extra overhead in fetching
%{REQUEST_URI} and comparing it to "/maintenance.html".
Admit defeat, sportingly. ;-)

Plus, if it was so that one needed to capture parts, you would need also
several RewriteCond's, and probable variables to hold them, no ?
(genuinely asking, I'm just starting to learn mod_rewrite)


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On Wed, Sep 17, 2008 at 4:58 PM, André Warnier <aw@ice-sa.com> wrote:
> Eric Covener wrote:
>>
>> On Wed, Sep 17, 2008 at 4:02 PM, André Warnier <aw@ice-sa.com> wrote:
>>>>
>>>> (you can do the latter via your regex, but it's usually simpler to
>>>> guard it the other way)
>>>>
>>>>
>>> RewriteRule !^/maintenance\.html$ /maintenance.html [R=302,NC,L]
>>
>> It quickly gets unamangeable as you need to add captures (putting you
>> into the realm of lookahead/lookbehind) and 2nd/3rd/4th escape hatches
>>
> Now, come on. I was answering this particular one, in which there are no
> captures nor any necessary. My solution is one line, yours is two; mine does
> not have to backtrack to the RewriteCond, yours does; regexpes are fast; and
> there is certainly some extra overhead in fetching %{REQUEST_URI} and
> comparing it to "/maintenance.html".
> Admit defeat, sportingly. ;-)

Sorry, many hours with users on #apache (and customers) makes me feel
that baking the restriction into the RewriteRule is a second choice,
as I included my reply (because it's counter-intuitive that addl
directives are easier to deal with)

> Plus, if it was so that one needed to capture parts, you would need also
> several RewriteCond's, and probable variables to hold them, no ?
> (genuinely asking, I'm just starting to learn mod_rewrite)

No, it's that you can't capture in the RewriteRule when you prefix it
with a negation. You have to bake the negation into e.g. negative
lookahead/behind in pcre instead of just asking mod_rewrite to negate
the entire test.

--
Eric Covener
covener@gmail.com

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