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Regex - how to match everything except a particular pattern

Answer 1

+1 A:

I believe the RedirectMatch is a short-circuit sorta deal. What this means, is that if you put another RedirectMatch ahead of your match-all, only the first match will execute. so something like...

RedirectMatch (/mycgi/cgi.php) http://www.mydomain.com$1 
RedirectMatch (.*) https://www.mydomain.com$1

zdav 2010-04-26 20:35:29

+1 You beat me by a few seconds. Your first rule should redirect to 'http' and you might want to add a leading '/' to it as well.

David Smith 2010-04-26 20:37:20

Won't that first rule result in a redirect loop?

Trey 2010-04-26 20:57:00

Wow... it was fast!!! But unfortunately by putting this line in my "normal non SSL" virtual host, it does not work. Firefox give me that error: Firefox has detected that the server is redirecting the request for this address in a way that will never complete. And I think this is normal because we ask Apache to do a redirect. So Apache receive the request, match it against the first regex then redirect to himself, match again, and so on. Your idea about that?I tryed to place the line in my SSL virtual server but it is ignored. Alain

Alain 2010-04-26 21:20:50

I think you are right Trey. See my comment above.

Alain 2010-04-26 21:21:34

Answer 2

A:

Apache 2.2 and later has negative lookahead support in regular expressions. If you are using Apache 2.2 or later this should work:

RedirectMatch ^/(?!mycgi/cgi.php)(.*) https://www.mydomain.com/$1

Trey 2010-04-26 20:52:12

Thank you very much. It works perfectly. You resolved in less then 30 minutes what I was working on for almost 8 hours now!

Alain 2010-04-26 22:56:59

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Regex - how to match everything except a particular pattern

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