59 lines
1.5 KiB
Python
59 lines
1.5 KiB
Python
# Copyright 2018 Netflix, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# from include/net/tcp_states.h:
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tcpstate = {}
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tcpstate[1] = 'ESTABLISHED'
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tcpstate[2] = 'SYN_SENT'
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tcpstate[3] = 'SYN_RECV'
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tcpstate[4] = 'FIN_WAIT1'
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tcpstate[5] = 'FIN_WAIT2'
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tcpstate[6] = 'TIME_WAIT'
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tcpstate[7] = 'CLOSE'
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tcpstate[8] = 'CLOSE_WAIT'
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tcpstate[9] = 'LAST_ACK'
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tcpstate[10] = 'LISTEN'
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tcpstate[11] = 'CLOSING'
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tcpstate[12] = 'NEW_SYN_RECV'
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# from include/net/tcp.h:
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TCPHDR_FIN = 0x01
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TCPHDR_SYN = 0x02
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TCPHDR_RST = 0x04
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TCPHDR_PSH = 0x08
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TCPHDR_ACK = 0x10
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TCPHDR_URG = 0x20
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TCPHDR_ECE = 0x40
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TCPHDR_CWR = 0x80
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def flags2str(flags):
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arr = []
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if flags & TCPHDR_FIN:
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arr.append("FIN")
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if flags & TCPHDR_SYN:
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arr.append("SYN")
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if flags & TCPHDR_RST:
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arr.append("RST")
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if flags & TCPHDR_PSH:
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arr.append("PSH")
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if flags & TCPHDR_ACK:
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arr.append("ACK")
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if flags & TCPHDR_URG:
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arr.append("URG")
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if flags & TCPHDR_ECE:
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arr.append("ECE")
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if flags & TCPHDR_CWR:
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arr.append("CWR")
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return "|".join(arr)
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