very interesting question... i can't wait to hear a solution myself if anyone out there knows of one...
you might want to put the regex inside an "alarm/eval" block anyway so that at least you can limit the maximum time it takes... simran. On Fri, 2002-11-29 at 13:48, David Garamond wrote: > i'm creating a web interface for users to add their own mail filtering > rules. the rules allow them to specify regexes to match headers and mail > body. however, i'm a little concerned with how users can accidentally/ > intentionally use too complex regexes like this "(a+.*(b+.+(c*.+)*.*))*" > and the machine will just crawl when doing matching. > > is there some way i can limit the amount of cpu time/amount of > backtracking/etc when doing regex matching? or do i have to resort to > os-based resource limiting? > > -- > dave -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
