Your IP : 216.73.216.79
# This file is part of Scapy
# See http://www.secdev.org/projects/scapy for more information
# Copyright (C) Philippe Biondi <phil@secdev.org>
# This program is published under a GPLv2 license
"""
PFLog: OpenBSD PF packet filter logging.
"""
import socket
from scapy.data import DLT_PFLOG
from scapy.packet import Packet, bind_layers
from scapy.fields import ByteEnumField, ByteField, IntField, SignedIntField, \
StrFixedLenField
from scapy.layers.inet import IP
from scapy.config import conf
if conf.ipv6_enabled:
from scapy.layers.inet6 import IPv6
class PFLog(Packet):
name = "PFLog"
# from OpenBSD src/sys/net/pfvar.h and src/sys/net/if_pflog.h
fields_desc = [ByteField("hdrlen", 0),
ByteEnumField("addrfamily", 2, {socket.AF_INET: "IPv4",
socket.AF_INET6: "IPv6"}),
ByteEnumField("action", 1, {0: "pass", 1: "drop",
2: "scrub", 3: "no-scrub",
4: "nat", 5: "no-nat",
6: "binat", 7: "no-binat",
8: "rdr", 9: "no-rdr",
10: "syn-proxy-drop"}),
ByteEnumField("reason", 0, {0: "match", 1: "bad-offset",
2: "fragment", 3: "short",
4: "normalize", 5: "memory",
6: "bad-timestamp",
7: "congestion",
8: "ip-options",
9: "proto-cksum",
10: "state-mismatch",
11: "state-insert",
12: "state-limit",
13: "src-limit",
14: "syn-proxy"}),
StrFixedLenField("iface", "", 16),
StrFixedLenField("ruleset", "", 16),
SignedIntField("rulenumber", 0),
SignedIntField("subrulenumber", 0),
SignedIntField("uid", 0),
IntField("pid", 0),
SignedIntField("ruleuid", 0),
IntField("rulepid", 0),
ByteEnumField("direction", 255, {0: "inout", 1: "in",
2: "out", 255: "unknown"}),
StrFixedLenField("pad", b"\x00\x00\x00", 3)]
def mysummary(self):
return self.sprintf("%PFLog.addrfamily% %PFLog.action% on %PFLog.iface% by rule %PFLog.rulenumber%") # noqa: E501
bind_layers(PFLog, IP, addrfamily=socket.AF_INET)
if conf.ipv6_enabled:
bind_layers(PFLog, IPv6, addrfamily=socket.AF_INET6)
conf.l2types.register(DLT_PFLOG, PFLog)