85e1b1b0dc
While working on this module, I noticed a couple of inconsistencies in how we were calling nfct. Specifically, the NFNL_SUBSYS_CTNETLINK value is supposed to be 1[1], and the order of arguments to nfct_open is subsys_id then subscriptions[2]. We were passing them in the opposite order, which didn't particularly matter because both were defined to be 0. Now that the subsystem identifier is correctly defined it does matter though. Change-Id: I9fb74a9ef7a83cd630afa1e1ea0e2fc0c6df3943 1: https://git.netfilter.org/libnfnetlink/tree/include/libnfnetlink/linux_nfnetlink.h#n45 2: https://git.netfilter.org/libnetfilter_conntrack/tree/src/main.c#n68
92 lines
2.7 KiB
Python
92 lines
2.7 KiB
Python
# Copyright (c) 2017 Fujitsu Limited
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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# Some parts are based on python-conntrack:
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# Copyright (c) 2009-2011,2015 Andrew Grigorev <andrew@ei-grad.ru>
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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#
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import socket
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CONNTRACK = 0
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NFCT_O_PLAIN = 0
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NFCT_OF_TIME_BIT = 1
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NFCT_OF_TIME = 1 << NFCT_OF_TIME_BIT
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NFCT_Q_DESTROY = 2
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NFCT_Q_FLUSH = 4
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NFCT_Q_DUMP = 5
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NFCT_T_DESTROY_BIT = 2
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NFCT_T_DESTROY = 1 << NFCT_T_DESTROY_BIT
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ATTR_IPV4_SRC = 0
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ATTR_IPV4_DST = 1
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ATTR_IPV6_SRC = 4
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ATTR_IPV6_DST = 5
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ATTR_PORT_SRC = 8
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ATTR_PORT_DST = 9
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ATTR_ICMP_TYPE = 12
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ATTR_ICMP_CODE = 13
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ATTR_ICMP_ID = 14
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ATTR_L3PROTO = 15
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ATTR_L4PROTO = 17
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ATTR_ZONE = 61
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NFCT_T_NEW_BIT = 0
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NFCT_T_NEW = 1 << NFCT_T_NEW_BIT
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NFCT_T_UPDATE_BIT = 1
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NFCT_T_UPDATE = 1 << NFCT_T_UPDATE_BIT
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NFCT_T_DESTROY_BIT = 2
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NFCT_T_DESTROY = 1 << NFCT_T_DESTROY_BIT
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NFCT_T_ALL = NFCT_T_NEW | NFCT_T_UPDATE | NFCT_T_DESTROY
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NFCT_CB_CONTINUE = 1
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NFCT_CB_FAILURE = -1
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NFNL_SUBSYS_CTNETLINK = 1
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BUFFER = 1024
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# IPv6 address memory buffer
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ADDR_BUFFER_6 = 16
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ADDR_BUFFER_4 = 4
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IPVERSION_SOCKET = {4: socket.AF_INET, 6: socket.AF_INET6}
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IPVERSION_BUFFER = {4: ADDR_BUFFER_4, 6: ADDR_BUFFER_6}
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ENTRY_IS_LOWER = -1
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ENTRY_MATCHES = 0
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ENTRY_IS_HIGHER = 1
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