84 lines
2.6 KiB
Plaintext
84 lines
2.6 KiB
Plaintext
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#!/usr/sbin/dtrace -s
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/*
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* Copyright (c) 2015 George V. Neville-Neil
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*
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* The tcptrack D script shows various information about TCP
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* connections including acceptance and refusal of inbound and
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* outbound connections as well as state changes.
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*
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* Usage: tcptrack
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*/
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#pragma D option quiet
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tcp:kernel::accept-established
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{
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printf("Accept connection from %s:%d\tto %s:%d\n",
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args[2]->ip_saddr,
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args[4]->tcp_sport,
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args[2]->ip_daddr,
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args[4]->tcp_dport);
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}
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tcp:kernel::accept-refused
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{
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printf("Refused connection from %s:%d\tto %s:%d\n",
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args[2]->ip_daddr,
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args[4]->tcp_dport,
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args[2]->ip_saddr,
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args[4]->tcp_sport);
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}
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tcp:kernel::connect-established
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{
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printf("Connection established to %s:%d from %s:%d\n",
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args[2]->ip_saddr,
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args[4]->tcp_sport,
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args[2]->ip_daddr,
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args[4]->tcp_dport);
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}
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tcp:kernel::connect-refused
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{
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printf("Connection refused by %s:%d from %s:%d\n",
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args[2]->ip_saddr,
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args[4]->tcp_sport,
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args[2]->ip_daddr,
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args[4]->tcp_dport);
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}
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tcp:kernel::state-change
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{
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newstate = args[3]->tcps_state;
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oldstate = args[5]->tcps_state;
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printf("State changed from %s\t\t%s\n", tcp_state_string[oldstate],
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tcp_state_string[newstate]);
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}
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