Snort mailing list archives
Re: /smi at the end of pcre statements
From: Nigel Houghton <nhoughton () sourcefire com>
Date: Mon, 16 Mar 2009 15:03:06 -0400
On Mon, Mar 16, 2009 at 1:19 PM, Stephen Mullins <steve.mullins.work () gmail com> wrote:
Thanks, that will come in handy, especially the Snort specific portion. The "/smi" question is still stumping me and some of my colleagues.
http://www.snort.org/docs/snort_htmanuals/htmanual_2832/node274.html Snort Users Manual Format pcre:[!]"(/<regex>/|m<delim><regex><delim>)[ismxAEGRUB]"; The post-re modifiers set compile time flags for the regular expression. Table 3.6: Perl compatible modifiers i case insensitive s include newlines in the dot metacharacter m By default, the string is treated as one big line of characters. ^ and $ match at the beginning and ending of the string. When m is set, ^ and $ match immediately following or immediately before any newline in the buffer, as well as the very start and very end of the buffer. Extrapolating this information gives us: smi == include newlines in the dot metacharacter, match the start and end immediately following or before any newline as well as the start and end of the buffer and make it case insensitive -- Nigel Houghton Head Mentalist SF VRT http://vrt-sourcefire.blogspot.com && http://www.snort.org/vrt/ ------------------------------------------------------------------------------ Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are powering Web 2.0 with engaging, cross-platform capabilities. Quickly and easily build your RIAs with Flex Builder, the Eclipse(TM)based development software that enables intelligent coding and step-through debugging. Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com _______________________________________________ Snort-users mailing list Snort-users () lists sourceforge net Go to this URL to change user options or unsubscribe: https://lists.sourceforge.net/lists/listinfo/snort-users Snort-users list archive: http://www.geocrawler.com/redir-sf.php3?list=snort-users
Current thread:
- /smi at the end of pcre statements Stephen Mullins (Mar 16)
- Re: /smi at the end of pcre statements Matt Olney (Mar 16)
- Re: /smi at the end of pcre statements Stephen Mullins (Mar 16)
- Re: /smi at the end of pcre statements Nigel Houghton (Mar 16)
- Re: /smi at the end of pcre statements Stephen Mullins (Mar 16)
- Re: /smi at the end of pcre statements Matt Olney (Mar 16)