/usr/lib/python2.7/dist-packages/framework/cxnet/netlink/ipq.py is in fso-frameworkd 0.10.1-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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Netlink IP Queue
"""
# Copyright (c) 2008 Peter V. Saveliev
#
# This file is part of Connexion project.
#
# Connexion 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 3 of the License, or
# (at your option) any later version.
#
# Connexion 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 Connexion; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
from generic import *
from cxnet.common import *
# Types of IPQ messages
IPQM_BASE = 0x10 # standard netlink messages below this
IPQM_MODE = IPQM_BASE + 1 # Mode request from peer
IPQM_VERDICT = IPQM_BASE + 2 # Verdict from peer
IPQM_PACKET = IPQM_BASE + 3 # Packet from kernel
IPQM_MAX = IPQM_BASE + 4
IPQ_COPY_NONE = 0 # Initial mode, packets are dropped
IPQ_COPY_META = 1 # Copy metadata
IPQ_COPY_PACKET = 2 # Copy metadata + packet (range)
IPQ_MAX_PAYLOAD = 0x800
# Responses from hook functions
NF_DROP = 0
NF_ACCEPT = 1
NF_STOLEN = 2
NF_QUEUE = 3
NF_REPEAT = 4
NF_STOP = 5
class _ipq_mode_msg(Structure):
_fields_ = [
("value", c_ubyte),
("range", cx_int),
]
class _ipq_packet_msg(Structure):
_fields_ = [
("packet_id", c_ulong),
("mark", c_ulong),
("timestamp_sec", c_long),
("timestamp_usec", c_long),
("hook", c_uint),
("indev_name", c_char * 16),
("outdev_name", c_char * 16),
("hw_protocol", c_ushort),
("hw_type", c_ushort),
("hw_addrlen", c_ubyte),
("hw_addr", c_ubyte * 8),
("data_len", cx_int),
("payload", c_byte * IPQ_MAX_PAYLOAD),
]
class _ipq_verdict_msg(Structure):
_fields_ = [
("value", c_uint),
("id", c_ulong),
("data_len", cx_int),
("payload", c_ubyte),
]
class _ipq_peer_msg(Union):
_fields_ = [
("mode", _ipq_mode_msg),
("verdict", _ipq_verdict_msg),
]
class ipq_peer_msg(Structure):
_fields_ = [
("hdr", nlmsghdr),
("data", _ipq_peer_msg),
]
class ipq_packet_msg(Structure):
_fields_ = [
("hdr", nlmsghdr),
("data", _ipq_packet_msg),
]
class ipq_socket(nl_socket):
"""
IPQ socket
"""
msg = ipq_packet_msg
def __init__(self, mode=IPQ_COPY_PACKET):
nl_socket.__init__(self, family=NETLINK_FIREWALL)
msg = ipq_peer_msg()
msg.hdr.type = IPQM_MODE
msg.hdr.flags = NLM_F_REQUEST
msg.data.mode.value = mode
msg.data.mode.range = IPQ_MAX_PAYLOAD
self.send(msg)
def verdict(self, seq, v):
msg = ipq_peer_msg()
msg.hdr.type = IPQM_VERDICT
msg.hdr.flags = NLM_F_REQUEST
msg.data.verdict.value = v
msg.data.verdict.id = seq
msg.data.verdict.data_len = 0
self.send(msg)
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