1 /* $NetBSD: moptrace.c,v 1.13 2020/04/22 23:57:56 joerg Exp $ */
2
3 /*
4 * Copyright (c) 1993-95 Mats O Jansson. 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 ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 #include "port.h"
28 #ifndef lint
29 __RCSID("$NetBSD: moptrace.c,v 1.13 2020/04/22 23:57:56 joerg Exp $");
30 #endif
31
32 /*
33 * moptrace - MOP Trace Utility
34 *
35 * Usage: moptrace -a [ -d ] [ -3 | -4 ]
36 * moptrace [ -d ] [ -3 | -4 ] interface
37 */
38
39 #include "os.h"
40 #include "common.h"
41 #include "device.h"
42 #include "dl.h"
43 #include "get.h"
44 #include "mopdef.h"
45 #include "pf.h"
46 #include "print.h"
47 #include "rc.h"
48 #include "log.h"
49
50 /*
51 * The list of all interfaces that are being listened to.
52 * "selects" on the descriptors in this list.
53 */
54 extern struct if_info *iflist;
55
56 __dead static void Usage(void);
57 void mopProcess(struct if_info *, u_char *);
58
59 int AllFlag = 0; /* listen on "all" interfaces */
60 int DebugFlag = 0; /* print debugging messages */
61 int Not3Flag = 0; /* Ignore MOP V3 messages */
62 int Not4Flag = 0; /* Ignore MOP V4 messages */
63 int promisc = 1; /* Need promisc mode */
64
65 int
main(int argc,char ** argv)66 main(int argc, char **argv)
67 {
68 int op;
69 char *interface;
70
71 mopInteractive = 1;
72 opterr = 0;
73 while ((op = getopt(argc, argv, "34ad")) != -1) {
74 switch (op) {
75 case '3':
76 Not3Flag++;
77 break;
78 case '4':
79 Not4Flag++;
80 break;
81 case 'a':
82 AllFlag++;
83 break;
84 case 'd':
85 DebugFlag++;
86 break;
87 default:
88 Usage();
89 /* NOTREACHED */
90 }
91 }
92
93 interface = argv[optind++];
94
95 if ((AllFlag && interface) ||
96 (!AllFlag && interface == 0) ||
97 (Not3Flag && Not4Flag))
98 Usage();
99
100 if (AllFlag)
101 deviceInitAll();
102 else
103 deviceInitOne(interface);
104
105 Loop();
106 /* NOTREACHED */
107 return (0);
108 }
109
110 static void
Usage(void)111 Usage(void)
112 {
113 (void) fprintf(stderr, "usage: %s -a [ -d ] [ -3 | -4 ]\n",
114 getprogname());
115 (void) fprintf(stderr, " %s [ -d ] [ -3 | -4 ] interface\n",
116 getprogname());
117 exit(1);
118 }
119
120 /*
121 * Process incoming packages.
122 */
123 void
mopProcess(struct if_info * ii,u_char * pkt)124 mopProcess(struct if_info *ii, u_char *pkt)
125 {
126 int trans;
127
128 /* We don't known which transport, Guess! */
129
130 trans = mopGetTrans(pkt, 0);
131
132 /* Ok, return if we don't want this message */
133
134 if ((trans == TRANS_ETHER) && Not3Flag) return;
135 if ((trans == TRANS_8023) && Not4Flag) return;
136
137 mopPrintHeader(stdout, pkt, trans);
138 mopPrintMopHeader(stdout, pkt, trans);
139
140 mopDumpDL(stdout, pkt, trans);
141 mopDumpRC(stdout, pkt, trans);
142
143 fprintf(stdout, "\n");
144 fflush(stdout);
145 }
146