ENH: dovecot regexs rewritten and extra failures

ChangeLog

@@ -15,6 +15,9 @@ ver. 0.8.11 (2013/XX/XXX) - wanna-be-released
 - New Features:
   
 - Enhancements:
+  Daniel Black
+   * filter/dovecot -- updated to use full anchored regex with extra failure
+	   examples in sample logs
   
 
 ver. 0.8.10 (2013/06/12) - wanna-be-secure

config/filter.d/dovecot.conf

@@ -1,20 +1,23 @@
-# Fail2Ban configuration file for dovcot
+# Fail2Ban configuration file for dovecot
 #
 # Author: Martin Waschbuesch
-#
-#
+#         Daniel Black (rewrote with begin and end anchors)
+
+[INCLUDES]
+
+before = common.conf
 
 [Definition]
 
+_daemon = dovecot(-auth)?
+
 # Option:  failregex
-# Notes.:  regex to match the password failures messages in the logfile. The
-#          host must be matched by a group named "host". The tag "<HOST>" can
-#          be used for standard IP/hostname matching and is only an alias for
-#          (?:::f{4,6}:)?(?P<host>[\w\-.^_]+)
+# Notes.:  regex to match the password failures messages in the logfile.
+#          first regex is essentially a copy of pam-generic.conf
 # Values:  TEXT
 #
-failregex = .*(?:pop3-login|imap-login):.*(?:Authentication failure|Aborted login \(auth failed|Aborted login \(tried to use disabled|Disconnected \(auth failed).*\s+rip=(?P<host>\S*),.*
-            pam.*dovecot.*(?:authentication failure).*\s+rhost=<HOST>(?:\s+user=.*)?\s*$
+failregex = ^%(__prefix_line)s(pam_unix(?:\(\S+\))?:)?\s+authentication failure; logname=\S* uid=\S* euid=\S* tty=dovecot ruser=\S* rhost=<HOST>(\s+user=\S*)?\s*$
+            ^%(__prefix_line)s(pop3|imap)-login: (Info: )?(Aborted login|Disconnected)(: Inactivity)? \((no auth attempts|auth failed, \d+ attempts|tried to use disabled \S+ auth)\):( user=<\S+>,)?( method=\S+,)? rip=<HOST>, lip=(\d{1,3}\.){3}\d{1,3},( TLS( handshaking)?(: Disconnected)?)?\s*$
 
 # Option:  ignoreregex
 # Notes.:  regex to ignore. If this regex matches, the line is ignored.

testcases/files/logs/dovecot

@@ -3,6 +3,12 @@
 @e040c6d8a3bfa62d358083300119c259cd44dcd0 dovecot-auth: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=web rhost=176.61.140.224
 # Above example with injected rhost into ruser -- should not match for 1.2.3.4
 @e040c6d8a3bfa62d358083300119c259cd44dcd0 dovecot-auth: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=rhost=1.2.3.4 rhost=192.0.43.10
-@e040c6d8a3bfa62d358083300119c259cd44dcd0 dovecot-auth: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=root rhost=176.61.140.224  user=root
+@e040c6d8a3bfa62d358083300119c259cd44dcd0 dovecot-auth: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot ruser=root rhost=176.61.140.225  user=root
 
 Dec 12 11:19:11 dunnart dovecot: pop3-login: Aborted login (tried to use disabled plaintext auth): rip=190.210.136.21, lip=113.212.99.193
+
+Jun 13 16:30:54 platypus dovecot: imap-login: Disconnected (auth failed, 2 attempts): user=<username.bob>, method=PLAIN, rip=49.176.98.87, lip=113.212.99.194, TLS
+Jun 13 20:48:11 platypus dovecot: pop3-login: Disconnected (no auth attempts): rip=121.44.24.254, lip=113.212.99.194, TLS: Disconnected
+Jun 13 21:48:06 platypus dovecot: pop3-login: Disconnected: Inactivity (no auth attempts): rip=180.200.180.81, lip=113.212.99.194, TLS
+Jun 13 20:20:21 platypus dovecot: imap-login: Disconnected (no auth attempts): rip=180.189.168.166, lip=113.212.99.194, TLS handshaking: Disconnected
+