ENH: Add <ipmatches> and <ipjailmatches> tags

Example use filter also added for sendmail-whois with ipmatches rather
than grepped lines

MANIFEST

@@ -228,6 +228,7 @@ config/action.d/mynetwatchman.conf
 config/action.d/pf.conf
 config/action.d/sendmail.conf
 config/action.d/sendmail-buffered.conf
+config/action.d/sendmail-whois-ipmatches.conf
 config/action.d/sendmail-whois.conf
 config/action.d/sendmail-whois-lines.conf
 config/action.d/shorewall.conf

config/action.d/sendmail-whois-ipmatches.conf

@@ -0,0 +1,77 @@
+# Fail2Ban configuration file
+#
+# Author: Cyril Jaquier
+#
+#
+
+[INCLUDES]
+
+before = sendmail-common.conf
+
+[Definition]
+
+# Option:  actionstart
+# Notes.:  command executed once at the start of Fail2Ban.
+# Values:  CMD
+#
+actionstart = printf %%b "Subject: [Fail2Ban] <name>: started on `uname -n`
+              Date: `LC_TIME=C date -u +"%%a, %%d %%h %%Y %%T +0000"`
+              From: <sendername> <<sender>>
+              To: <dest>\n
+              Hi,\n
+              The jail <name> has been started successfully.\n
+              Regards,\n
+              Fail2Ban" | /usr/sbin/sendmail -f <sender> <dest>
+
+# Option:  actionstop
+# Notes.:  command executed once at the end of Fail2Ban
+# Values:  CMD
+#
+actionstop = printf %%b "Subject: [Fail2Ban] <name>: stopped on `uname -n`
+             Date: `LC_TIME=C date -u +"%%a, %%d %%h %%Y %%T +0000"`
+             From: <sendername> <<sender>>
+             To: <dest>\n
+             Hi,\n
+             The jail <name> has been stopped.\n
+             Regards,\n
+             Fail2Ban" | /usr/sbin/sendmail -f <sender> <dest>
+
+# Option:  actioncheck
+# Notes.:  command executed once before each actionban command
+# Values:  CMD
+#
+actioncheck = 
+
+# Option:  actionban
+# Notes.:  command executed when banning an IP. Take care that the
+#          command is executed with Fail2Ban user rights.
+# Tags:    See jail.conf(5) man page
+# Values:  CMD
+#
+actionban = printf %%b "Subject: [Fail2Ban] <name>: banned <ip> from `uname -n`
+            Date: `LC_TIME=C date -u +"%%a, %%d %%h %%Y %%T +0000"`
+            From: <sendername> <<sender>>
+            To: <dest>\n
+            Hi,\n
+            The IP <ip> has just been banned by Fail2Ban after
+            <failures> attempts against <name>.\n\n
+            Here are more information about <ip>:\n
+            `/usr/bin/whois <ip>`\n\n
+            Matches for IP:<ip>\n
+            <ipmatches>\n\n
+            Regards,\n
+            Fail2Ban" | /usr/sbin/sendmail -f <sender> <dest>
+
+# Option:  actionunban
+# Notes.:  command executed when unbanning an IP. Take care that the
+#          command is executed with Fail2Ban user rights.
+# Tags:    See jail.conf(5) man page
+# Values:  CMD
+#
+actionunban = 
+
+[Init]
+
+# Default name of the chain
+#
+name = default

fail2ban/server/action.py

@@ -295,7 +295,7 @@ class Action:
 
 	#@staticmethod
 	def escapeTag(tag):
-		for c in '\\#&;`|*?~<>^()[]{}$\n\'"':
+		for c in '\\#&;`|*?~<>^()[]{}$\'"':
 			if c in tag:
 				tag = tag.replace(c, '\\' + c)
 		return tag
@@ -314,8 +314,11 @@ class Action:
 		"""
 		string = query
 		for tag, value in aInfo.iteritems():
+			if "<%s>" % tag in query:
+				if callable(value):
+					value = value()
 				value = str(value)			  # assure string
-			if tag == 'matches':
+				if tag.endswith('matches'):
 					# That one needs to be escaped since its content is
 					# out of our control
 					value = Action.escapeTag(value)

fail2ban/server/actions.py

@@ -183,7 +183,14 @@ class Actions(JailThread):
 			aInfo["ip"] = bTicket.getIP()
 			aInfo["failures"] = bTicket.getAttempt()
 			aInfo["time"] = bTicket.getTime()
-			aInfo["matches"] = "".join(bTicket.getMatches())
+			aInfo["matches"] = "\n".join(bTicket.getMatches())
+			if self.jail.getDatabase() is not None:
+				aInfo["ipmatches"] = lambda: "\n".join(
+					self.jail.getDatabase().getBansMerged(
+						bTicket.getIP()).getMatches())
+				aInfo["ipjailmatches"] = lambda: "\n".join(
+					self.jail.getDatabase().getBansMerged(
+						bTicket.getIP(), jail=self.jail).getMatches())
 			if self.__banManager.addBanTicket(bTicket):
 				logSys.warning("[%s] Ban %s" % (self.jail.getName(), aInfo["ip"]))
 				for action in self.__actions:

fail2ban/tests/actiontestcase.py

@@ -102,8 +102,28 @@ class ExecuteAction(unittest.TestCase):
 			"Text 890 text 123 ABC")
 		self.assertEqual(
 			self.__action.replaceTag("<matches>",
-				{'matches': "some >char< should \< be[ escap}ed&"}),
+				{'matches': "some >char< should \< be[ escap}ed&\n"}),
-			r"some \>char\< should \\\< be\[ escap\}ed\&")
+			"some \\>char\\< should \\\\\\< be\\[ escap\\}ed\\&\n")
+		self.assertEqual(
+			self.__action.replaceTag("<ipmatches>",
+				{'ipmatches': "some >char< should \< be[ escap}ed&\n"}),
+			"some \\>char\\< should \\\\\\< be\\[ escap\\}ed\\&\n")
+		self.assertEqual(
+			self.__action.replaceTag("<ipjailmatches>",
+				{'ipjailmatches': "some >char< should \< be[ escap}ed&\n"}),
+			"some \\>char\\< should \\\\\\< be\\[ escap\\}ed\\&\n")
+
+		# Callable
+		self.assertEqual(
+			self.__action.replaceTag("09 <callable> 11",
+				{'callable': lambda: str(10)}),
+			"09 10 11")
+
+		# As tag not present, therefore callable should not be called
+		# Will raise ValueError if it is
+		self.assertEqual(
+			self.__action.replaceTag("abc",
+				{'callable': lambda: int("a")}), "abc")
 
 	def testExecuteActionBan(self):
 		self.__action.setActionStart("touch /tmp/fail2ban.test")