- Added ISO 8601 date/time format.

git-svn-id: https://fail2ban.svn.sourceforge.net/svnroot/fail2ban/branches/FAIL2BAN-0_8@692 a942ae1a-1317-0410-a47c-b1dcaea8d605

COPYING

@@ -1,3 +1,7 @@
+The following copyright applies to all files present in the Fail2ban package,
+except if a different copyright is explicitly defined in this file.
+
+
 		    GNU GENERAL PUBLIC LICENSE
 		       Version 2, June 1991
 
@@ -337,3 +341,28 @@ proprietary programs.  If your program is a subroutine library, you may
 consider it more useful to permit linking proprietary applications with the
 library.  If this is what you want to do, use the GNU Lesser General
 Public License instead of this License.
+
+---------------------------------
+The file server/iso8601.py is licensed under the following terms.
+
+
+Copyright (c) 2007 Michael Twomey
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

ChangeLog

@@ -23,6 +23,7 @@ ver. 0.8.3 (2008/??/??) - stable
   Thanks to Dennis Winter.
 - Fixed ignoreregex processing in fail2ban-client. Thanks to
   René Berber.
+- Added ISO 8601 date/time format.
 
 ver. 0.8.2 (2008/03/06) - stable
 ----------

MANIFEST

@@ -21,6 +21,7 @@ server/asyncserver.py
 server/filter.py
 server/filtergamin.py
 server/filterpoll.py
+server/iso8601.py
 server/server.py
 server/actions.py
 server/faildata.py

server/datedetector.py

@@ -26,9 +26,7 @@ __license__ = "GPL"
 
 import time, logging
 
-from datetemplate import DateStrptime
-from datetemplate import DateTai64n
-from datetemplate import DateEpoch
+from datetemplate import DateStrptime, DateTai64n, DateEpoch, DateISO8601
 from threading import Lock
 
 # Gets the instance of the logger.
@@ -99,6 +97,10 @@ class DateDetector:
 			template = DateEpoch()
 			template.setName("Epoch")
 			self.__templates.append(template)
+			# ISO 8601
+			template = DateISO8601()
+			template.setName("ISO 8601")
+			self.__templates.append(template)
 		finally:
 			self.__lock.release()
 	

server/datetemplate.py

@@ -28,6 +28,7 @@ __license__ = "GPL"
 import re, time
 
 from mytime import MyTime
+import iso8601
 
 class DateTemplate:
 	
@@ -163,4 +164,24 @@ class DateTai64n(DateTemplate):
 			value = dateMatch.group()
 			seconds_since_epoch = value[2:17]
 			date = list(time.gmtime(int(seconds_since_epoch, 16)))
-		return date
+		return date
+
+
+class DateISO8601(DateTemplate):
+
+	def __init__(self):
+		DateTemplate.__init__(self)
+		date_re = "[0-9]{4}-[0-9]{1,2}-[0-9]{1,2}" \
+		".[0-9]{2}:[0-9]{2}:[0-9]{2}(\.[0-9]+)?" \
+		"(Z|(([-+])([0-9]{2}):([0-9]{2})))?"
+		self.setRegex(date_re)
+	
+	def getDate(self, line):
+		date = None
+		dateMatch = self.matchDate(line)
+		if dateMatch:
+			# Parses the date.
+			value = dateMatch.group()
+			print value
+			date = list(iso8601.parse_date(value).utctimetuple())
+		return date

server/iso8601.py

@@ -0,0 +1,123 @@
+# Copyright (c) 2007 Michael Twomey
+#
+# Permission is hereby granted, free of charge, to any person obtaining a
+# copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+"""ISO 8601 date time string parsing
+
+Basic usage:
+>>> import iso8601
+>>> iso8601.parse_date("2007-01-25T12:00:00Z")
+datetime.datetime(2007, 1, 25, 12, 0, tzinfo=<iso8601.iso8601.Utc ...>)
+>>>
+
+"""
+
+from datetime import datetime, timedelta, tzinfo
+import re
+
+__all__ = ["parse_date", "ParseError"]
+
+# Adapted from http://delete.me.uk/2005/03/iso8601.html
+ISO8601_REGEX = re.compile(r"(?P<year>[0-9]{4})(-(?P<month>[0-9]{1,2})(-(?P<day>[0-9]{1,2})"
+    r"((?P<separator>.)(?P<hour>[0-9]{2}):(?P<minute>[0-9]{2})(:(?P<second>[0-9]{2})(\.(?P<fraction>[0-9]+))?)?"
+    r"(?P<timezone>Z|(([-+])([0-9]{2}):([0-9]{2})))?)?)?)?"
+)
+TIMEZONE_REGEX = re.compile("(?P<prefix>[+-])(?P<hours>[0-9]{2}).(?P<minutes>[0-9]{2})")
+
+class ParseError(Exception):
+    """Raised when there is a problem parsing a date string"""
+
+# Yoinked from python docs
+ZERO = timedelta(0)
+class Utc(tzinfo):
+    """UTC
+    
+    """
+    def utcoffset(self, dt):
+        return ZERO
+
+    def tzname(self, dt):
+        return "UTC"
+
+    def dst(self, dt):
+        return ZERO
+UTC = Utc()
+
+class FixedOffset(tzinfo):
+    """Fixed offset in hours and minutes from UTC
+    
+    """
+    def __init__(self, offset_hours, offset_minutes, name):
+        self.__offset = timedelta(hours=offset_hours, minutes=offset_minutes)
+        self.__name = name
+
+    def utcoffset(self, dt):
+        return self.__offset
+
+    def tzname(self, dt):
+        return self.__name
+
+    def dst(self, dt):
+        return ZERO
+    
+    def __repr__(self):
+        return "<FixedOffset %r>" % self.__name
+
+def parse_timezone(tzstring, default_timezone=UTC):
+    """Parses ISO 8601 time zone specs into tzinfo offsets
+    
+    """
+    if tzstring == "Z":
+        return default_timezone
+    # This isn't strictly correct, but it's common to encounter dates without
+    # timezones so I'll assume the default (which defaults to UTC).
+    # Addresses issue 4.
+    if tzstring is None:
+        return default_timezone
+    m = TIMEZONE_REGEX.match(tzstring)
+    prefix, hours, minutes = m.groups()
+    hours, minutes = int(hours), int(minutes)
+    if prefix == "-":
+        hours = -hours
+        minutes = -minutes
+    return FixedOffset(hours, minutes, tzstring)
+
+def parse_date(datestring, default_timezone=UTC):
+    """Parses ISO 8601 dates into datetime objects
+    
+    The timezone is parsed from the date string. However it is quite common to
+    have dates without a timezone (not strictly correct). In this case the
+    default timezone specified in default_timezone is used. This is UTC by
+    default.
+    """
+    if not isinstance(datestring, basestring):
+        raise ParseError("Expecting a string %r" % datestring)
+    m = ISO8601_REGEX.match(datestring)
+    if not m:
+        raise ParseError("Unable to parse date string %r" % datestring)
+    groups = m.groupdict()
+    tz = parse_timezone(groups["timezone"], default_timezone=default_timezone)
+    if groups["fraction"] is None:
+        groups["fraction"] = 0
+    else:
+        groups["fraction"] = int(float("0.%s" % groups["fraction"]) * 1e6)
+    return datetime(int(groups["year"]), int(groups["month"]), int(groups["day"]),
+        int(groups["hour"]), int(groups["minute"]), int(groups["second"]),
+        int(groups["fraction"]), tz)