Regex count (stats) and reorder (rise up) mechanism #3007
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…facilities (rise up most used regex to speedup scan by multiple list)
… and more precise as old RegexStat by indices), regex list can be reordered now, so target REs by indices is not valid anymore.
…per default original pattern only, in verbose output interpolated RE); new parameter `--verbose-regex` or `--VR` to force output of RE in non-verbose mode
…o in test factory by failures)
(resolve conflicts in ChangeLog and fix systemd test cases)
Conflicts resolved
mark99eg
approved these changes
Mar 4, 2022
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failregex(andignoreregex) can rise up in filter depending on numer of matched lines,(most used expressions go to the begin of list so will be applied first) what can provide better performance by
match search; two new option allow to switch this behavior for single or any expression:
NO-RISE-UPorNoRiseUp- disable rising up for the regex for which this option is setNO-REORDERorNoReorder- disable reordering offailregexorignoreregexlist completelyfail2ban-regexextended:prefregex,failregexandignoreregexare showing as original pattern now and PCRE expressiononly in verbose mode (and all patterns are reordered by number of matches now);
--verbose-regexor--VRwhich show substituted PCRE expression ofprefregex,matched
failregexandignoreregexadditionally to pattern (without the need to enable more verbose mode)fail2ban-regexand test suite e. g. sample regexs factory are adjusted to use more common functionalityof filter module (fewer special tweaks inside the modules);