/usr/share/pyshared/PreludeCorrelator/main.py is in prelude-correlator 1.0.0-1.
This file is owned by root:root, with mode 0o644.
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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 | #!/usr/bin/env python
#
# 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 require
import sys, os, time, signal
from optparse import OptionParser
from PreludeEasy import ClientEasy, CheckVersion
from PreludeCorrelator import __version__ as VERSION
from PreludeCorrelator import idmef, pluginmanager, context, log, config
LIBPRELUDE_REQUIRED_VERSION = "0.9.25"
class Env:
def __init__(self, options):
self.logger = log.Log(options)
self.config = config.Config(options.config)
self.pluginmanager = pluginmanager.PluginManager(self)
self.logger.info("%d plugin have been loaded." % (self.pluginmanager.getPluginCount()))
class SignalHandler:
def __init__(self, env):
self._env = env
signal.signal(signal.SIGTERM, self._handle_signal)
signal.signal(signal.SIGINT, self._handle_signal)
signal.signal(signal.SIGQUIT, self._handle_signal)
def _handle_signal(self, signum, frame):
self._env.logger.info("caught signal %d" % signum)
self._env.pluginmanager.signal(signum, frame)
if signum == signal.SIGQUIT:
self._env.prelude_client.stats()
context.stats(self._env.logger)
else:
self._env.prelude_client.stop()
class PreludeClient:
def __init__(self, env, print_input=None, print_output=None, dry_run=False):
self._env = env
self._events_processed = 0
self._alert_generated = 0
self._print_input = print_input
self._print_output = print_output
self._continue = True
self._dry_run = dry_run
self._client = ClientEasy("prelude-correlator", ClientEasy.PERMISSION_IDMEF_READ|ClientEasy.PERMISSION_IDMEF_WRITE,
"Prelude-Correlator", "Correlator", "PreludeIDS Technologies",
VERSION)
self._client.Start()
def _handle_event(self, idmef):
if self._print_input:
self._print_input.write(str(idmef))
self._env.pluginmanager.run(idmef)
self._events_processed += 1
def stats(self):
self._env.logger.info("%d events received, %d correlationAlert generated." % (self._events_processed, self._alert_generated))
def correlationAlert(self, idmef):
self._alert_generated = self._alert_generated + 1
if not self._dry_run:
self._client.SendIDMEF(idmef)
if self._print_output:
self._print_output.write(str(idmef))
def recvEvent(self):
last = time.time()
while self._continue:
try:
msg = idmef.IDMEF()
r = self._client.RecvIDMEF(msg, 1000)
except:
r = 0
if r:
if msg.Get("alert.create_time"):
self._handle_event(msg)
now = time.time()
if now - last >= 1:
context.wakeup(now)
last = now
def stop(self):
self._continue = False
def main():
if not CheckVersion(LIBPRELUDE_REQUIRED_VERSION):
raise Exception, ("Libprelude version '%s' is required" % LIBPRELUDE_REQUIRED_VERSION)
config_filename = require.get_config_filename(None, "prelude-correlator.conf")
parser = OptionParser(usage="%prog", version="%prog " + VERSION)
parser.add_option("-c", "--config", action="store", dest="config", type="string", help="Configuration file to use", metavar="FILE", default=config_filename)
parser.add_option("", "--dry-run", action="store_true", dest="dry_run", help="No report to the specified Manager will occur", default=False)
parser.add_option("-d", "--daemon", action="store_true", dest="daemon", help="Run in daemon mode")
parser.add_option("-P", "--pidfile", action="store", dest="pidfile", type="string", help="Write Prelude Correlator PID to specified file", metavar="FILE")
parser.add_option("", "--print-input", action="store", dest="print_input", type="string", help="Dump alert input from manager to the specified file", metavar="FILE")
parser.add_option("", "--print-output", action="store", dest="print_output", type="string", help="Dump alert output to the specified file", metavar="FILE")
parser.add_option("--debug", action="store", dest="debug", type="int", help="Enable debug ouptut (optional debug level argument)", metavar="LEVEL")
(options, args) = parser.parse_args()
env = Env(options)
ifd = None
if options.print_input:
if options.print_input == "-":
ifd = sys.stdout
else:
ifd = open(options.print_input, "w")
ofd = None
if options.print_output:
if options.print_output == "-":
ofd = sys.stdout
else:
ofd = open(options.print_output, "w")
if options.daemon:
if os.fork():
os._exit(0)
os.setsid()
if os.fork():
os._exit(0)
os.umask(077)
fd = os.open('/dev/null', os.O_RDWR)
for i in xrange(3):
os.dup2(fd, i)
os.close(fd)
if options.pidfile:
open(options.pidfile, "w").write(str(os.getpid()))
env.prelude_client = PreludeClient(env, print_input=ifd, print_output=ofd, dry_run=options.dry_run)
idmef.set_prelude_client(env.prelude_client)
SignalHandler(env)
# restore previous context.
context.load()
env.prelude_client.recvEvent()
# save existing context
context.save()
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