Commit 5678d08 of 2016-11-26 changed:
( user=<\S*>,)?
to:
( user=<[^>]+>,)?
The change from `*` (zero or more times) to `+` (one or more times) may
not have been intended. It will miss lines containing, for example:
Aborted login (tried to use disallowed plaintext auth): user=<>
This commit reverts the `+` back to `*`.
* Update Kerio Connect filter
Fixed regex for some log entries that did not get recognized and some additional error formats are added.
* Add missing colon, GitHub address
* Add filter tests
* Add missing test
- optional parameter `mode` rewritten: normal (default), ddos, extra or aggressive (combines all), see sshd for regex details);
test cases reformatted (since "filterOptions", we don't need multiple test log-files anymore);
- rewritten using `prefregex` and used MLFID-related multi-line parsing (by using tag `<F-MLFID>` instead of buffering with `maxlines`);
- optional parameter `mode` introduced: normal (default), extra or aggressive (see sendmail-reject for regex details);
test cases extended
Many times faster and fewer CPU-hungry because of parsing with `maxlines=1`, so without line buffering (scrolling of the buffer-window).
Combination of tags `<F-MLFID>` and `<F-NOFAIL>` can be used now to process multi-line logs using single-line expressions:
- tag `<F-MLFID>`: used to identify resp. store failure info for groups of log-lines with the same identifier (e. g. combined failure-info for the same conn-id by `<F-MLFID>(?:conn-id)</F-MLFID>`, see sshd.conf for example)
- tag `<F-NOFAIL>`: used as mark for no-failure (helper to accumulate common failure-info);
filter.d/sshd.conf: [sshd], [sshd-ddos], [sshd-aggressive] optimized with pre-filtering using new option `prefregex` and new multi-line handling.
Some filters extended with user name;
[filter.d/pam-generic.conf]: grave fix injection on user name to host fixed;
test-cases in testSampleRegexsFactory can now check the captured groups (using additionally fields in failJSON structure)
new ssh rule(s) added:
- Connection reset by peer (multi-line rule during authorization process);
- No supported authentication methods available;
Single line and multi-line expression optimized, added optional prefixes and suffix (logged from several ssh versions);
closes gh-864
- fixed for newer version (one space, closes gh-1626)
reviewed and optimized:
- non-greedy catch-all replaced for safer match
- unneeded catch-all anchoring removed
- non-capturing groups
- fixes failregex, that ignores failures through some irrelevant info (closes#1623);
- ignores whole additionally irrelevant info in anchored regex before fixed failure data `\((?:auth failed, \d+ attempts( in \d+ secs)?|tried to use (disabled|disallowed) \S+ auth)\)`
- review, IPv6 compatibility fix, non-capturing groups
sebres