1#!/usr/sbin/dtrace -s 2/* 3 * Copyright (c) 2015 George V. Neville-Neil 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 * 29 * The tcptrack D script shows various information about TCP 30 * connections including acceptance and refusal of inbound and 31 * outbound connections as well as state changes. 32 * 33 * Usage: tcptrack 34 */ 35 36#pragma D option quiet 37tcp:kernel::accept-established 38{ 39 printf("Accept connection from %s:%d\tto %s:%d\n", 40 args[2]->ip_saddr, 41 args[4]->tcp_sport, 42 args[2]->ip_daddr, 43 args[4]->tcp_dport); 44 45} 46 47tcp:kernel::accept-refused 48{ 49 printf("Refused connection from %s:%d\tto %s:%d\n", 50 args[2]->ip_daddr, 51 args[4]->tcp_dport, 52 args[2]->ip_saddr, 53 args[4]->tcp_sport); 54 55} 56 57tcp:kernel::connect-established 58{ 59 printf("Connection established to %s:%d from %s:%d\n", 60 args[2]->ip_saddr, 61 args[4]->tcp_sport, 62 args[2]->ip_daddr, 63 args[4]->tcp_dport); 64 65} 66 67tcp:kernel::connect-refused 68{ 69 printf("Connection refused by %s:%d from %s:%d\n", 70 args[2]->ip_saddr, 71 args[4]->tcp_sport, 72 args[2]->ip_daddr, 73 args[4]->tcp_dport); 74} 75 76tcp:kernel::state-change 77{ 78 newstate = args[3]->tcps_state; 79 oldstate = args[5]->tcps_state; 80 printf("State changed from %s\t\t%s\n", tcp_state_string[oldstate], 81 tcp_state_string[newstate]); 82} 83 84