/usr/share/pyshared/PreludeCorrelator/idmef.py is in prelude-correlator 1.0.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 | # Copyright (C) 2009 PreludeIDS Technologies. All Rights Reserved.
# Author: Yoann Vandoorselaere <yoann.v@prelude-ids.com>
#
# This file is part of the Prelude-Correlator program.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; see the file COPYING. If not, write to
# the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
import tempfile, re
import PreludeEasy
from PreludeCorrelator import utils
_RegexType = type(re.compile(""))
class IDMEF(PreludeEasy.IDMEF):
def __setstate__(self, dict):
fd = tempfile.TemporaryFile("r+")
fd.write(dict["idmef_encoded"])
fd.seek(0)
PreludeEasy.IDMEF.__init__(self)
self.Read(fd)
del(dict["idmef_encoded"])
self.__dict__.update(dict)
def __getstate__(self):
fd = tempfile.TemporaryFile("r+")
self.Write(fd)
fd.seek(0)
odict = self.__dict__.copy()
odict["idmef_encoded"] = fd.read()
del(odict["this"])
return odict
def getTime(self):
itime = self.Get("alert.detect_time")
if not itime:
itime = self.Get("alert.create_time")
return itime
def Get(self, path, flatten=True, replacement=None):
path = PreludeEasy.IDMEFPath(path)
value = path.Get(self)
if not value:
if path.IsAmbiguous() and flatten:
return replacement or ()
return replacement
if flatten and type(value) is tuple:
value = utils.flatten(value)
return value
def Set(self, path, value):
if type(value) == PreludeEasy.IDMEFValue:
cur = self.Get(path)
if cur and value.Match(cur, PreludeEasy.IDMEFCriterion.OPERATOR_EQUAL) > 0:
return
PreludeEasy.IDMEF.Set(self, path, value)
def _match(self, path, needle):
value = self.Get(path)
if not isinstance(needle, _RegexType):
ret = value == needle
else:
m = needle.search(value or "")
if not m:
return False
ret = m.groups()
return ret
def match(self, *args):
if (len(args) % 2) != 0:
raise("Invalid number of arguments.")
ret = []
i = 0
while i < len(args):
r = self._match(args[i], args[i + 1])
if r is False:
return None
elif isinstance(r, tuple):
ret.extend(r)
i += 2
if ret:
return ret
return True
def alert(self):
global prelude_client
prelude_client.correlationAlert(self)
def addAlertReference(self, idmef, auto_set_detect_time=True):
if auto_set_detect_time is True:
intime = idmef.getTime()
curtime = self.getTime()
if (not curtime) or intime < curtime:
self.Set("alert.detect_time", intime)
self.Set("alert.source(>>)", idmef.Get("alert.source"))
self.Set("alert.target(>>)", idmef.Get("alert.target"))
self.Set("alert.correlation_alert.alertident(>>).alertident", idmef.Get("alert.messageid"))
self.Set("alert.correlation_alert.alertident(-1).analyzerid", idmef.Get("alert.analyzer(*).analyzerid")[-1])
def set_prelude_client(client):
global prelude_client
prelude_client = client
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