Re: Performance tip

On 8/17/06, Alex V. <alex-security <at> ssji.net> wrote:
> I'm absolutely not a regexp expert, but I'm wondering if it could not be
> possible to write the regexp like this (or something similar):
>
> SecFilterSelective VAR (
>       KEYWORD1|     # Comment explaining this match
>       KEYWORD2|     # Comment explaining this match
>       KEYWORD3|     # Comment explaining this match
>       KEYWORD4|     # Comment explaining this match
>       KEYWORD5|     # Comment explaining this match
>       KEYWORD6     # Comment explaining this match
> )

It is not possible to use comments, but it is possible to break the
regular expressions into multiple lines. like this.

SecFilterSelective VAR "(\
KEYWORD1|\
KEYWORD2|\
KEYWORD3)"

It is important to not have any whitespace at the beginning of the
line or before the continuation character "\".

--

-- 
Ivan Ristic, Technical Director
Thinking Stone, http://www.thinkingstone.com
ModSecurity: Open source Web Application Firewall

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