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/* $OpenBSD: moptrace.c,v 1.13 2015/02/09 23:00:14 deraadt Exp $ */ |
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/* |
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* Copyright (c) 1993-95 Mats O Jansson. 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 ``AS IS'' AND ANY EXPRESS OR |
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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/* |
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* moptrace - MOP Trace Utility |
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* |
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* Usage: moptrace [-3 | -4] [-ad] interface |
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*/ |
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#include "os.h" |
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#include "common/common.h" |
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#include "common/mopdef.h" |
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#include "common/device.h" |
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#include "common/print.h" |
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#include "common/pf.h" |
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#include "common/dl.h" |
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#include "common/rc.h" |
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#include "common/get.h" |
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/* |
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* The list of all interfaces that are being listened to. |
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* "selects" on the descriptors in this list. |
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*/ |
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struct if_info *iflist; |
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void Usage(void); |
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void mopProcess(struct if_info *, u_char *); |
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int AllFlag = 0; /* listen on "all" interfaces */ |
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int DebugFlag = 0; /* print debugging messages */ |
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int Not3Flag = 0; /* Ignore MOP V3 messages */ |
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int Not4Flag = 0; /* Ignore MOP V4 messages */ |
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int promisc = 1; /* Need promisc mode */ |
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extern char *__progname; |
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int |
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main(int argc, char *argv[]) |
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{ |
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int op; |
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char *interface; |
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/* All error reporting is done through syslogs. */ |
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openlog(__progname, LOG_PID | LOG_CONS, LOG_DAEMON); |
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opterr = 0; |
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while ((op = getopt(argc, argv, "34ad")) != -1) { |
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switch (op) { |
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case '3': |
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Not3Flag = 1; |
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break; |
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case '4': |
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Not4Flag = 1; |
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break; |
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case 'a': |
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AllFlag = 1; |
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break; |
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case 'd': |
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DebugFlag++; |
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break; |
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default: |
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Usage(); |
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/* NOTREACHED */ |
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} |
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} |
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interface = argv[optind++]; |
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if ((AllFlag && interface) || |
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(!AllFlag && interface == 0) || |
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(Not3Flag && Not4Flag)) |
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Usage(); |
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if (AllFlag) |
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deviceInitAll(); |
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else |
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deviceInitOne(interface); |
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Loop(); |
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/* NOTREACHED */ |
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} |
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void |
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Usage() |
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{ |
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fprintf(stderr, "usage: %s [-3 | -4] [-ad] interface\n", __progname); |
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exit(1); |
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} |
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/* |
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* Process incoming packages. |
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*/ |
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/* ARGSUSED */ |
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void |
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mopProcess(struct if_info *ii, u_char *pkt) |
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{ |
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int trans; |
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/* We don't known which transport, Guess! */ |
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trans = mopGetTrans(pkt, 0); |
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/* Ok, return if we don't want this message */ |
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if ((trans == TRANS_ETHER) && Not3Flag) return; |
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if ((trans == TRANS_8023) && Not4Flag) return; |
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fprintf(stdout, "Interface : %s", ii->if_name); |
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mopPrintHeader(stdout, pkt, trans); |
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mopPrintMopHeader(stdout, pkt, trans); |
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mopDumpDL(stdout, pkt, trans); |
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mopDumpRC(stdout, pkt, trans); |
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fprintf(stdout, "\n"); |
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fflush(stdout); |
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} |