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The Tcpdump Group git mirrors - tcpdump/blob - print-rip.c
2 * Copyright (c) 1989, 1990, 1991, 1993, 1994, 1996
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that: (1) source code distributions
7 * retain the above copyright notice and this paragraph in its entirety, (2)
8 * distributions including binary code include the above copyright notice and
9 * this paragraph in its entirety in the documentation or other materials
10 * provided with the distribution, and (3) all advertising materials mentioning
11 * features or use of this software display the following acknowledgement:
12 * ``This product includes software developed by the University of California,
13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
14 * the University nor the names of its contributors may be used to endorse
15 * or promote products derived from this software without specific prior
17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
23 static const char rcsid
[] =
24 "@(#) $Header: /tcpdump/master/tcpdump/print-rip.c,v 1.40 1999-11-22 04:24:28 fenner Exp $ (LBL)";
31 #include <sys/param.h>
33 #include <sys/socket.h>
35 #include <netinet/in.h>
36 #include <netinet/in_systm.h>
37 #include <netinet/ip.h>
38 #include <netinet/ip_var.h>
39 #include <netinet/udp.h>
40 #include <netinet/udp_var.h>
44 #include "interface.h"
45 #include "addrtoname.h"
46 #include "extract.h" /* must come after interface.h */
49 u_char rip_cmd
; /* request/response */
50 u_char rip_vers
; /* protocol version # */
51 u_short rip_zero2
; /* unused */
53 #define RIPCMD_REQUEST 1 /* want info */
54 #define RIPCMD_RESPONSE 2 /* responding to request */
55 #define RIPCMD_TRACEON 3 /* turn tracing on */
56 #define RIPCMD_TRACEOFF 4 /* turn it off */
57 #define RIPCMD_POLL 5 /* want info from everybody */
58 #define RIPCMD_POLLENTRY 6 /* poll for entry */
64 u_int32_t rip_dest_mask
;
66 u_int32_t rip_metric
; /* cost of route */
70 rip_entry_print(register int vers
, register const struct rip_netinfo
*ni
)
72 register u_char
*cp
, *ep
;
74 if (EXTRACT_16BITS(&ni
->rip_family
) != AF_INET
) {
76 printf(" [family %d:", EXTRACT_16BITS(&ni
->rip_family
));
77 cp
= (u_char
*)&ni
->rip_tag
;
78 ep
= (u_char
*)&ni
->rip_metric
+ sizeof(ni
->rip_metric
);
79 for (; cp
< ep
; cp
+= 2)
80 printf(" %04x", EXTRACT_16BITS(cp
));
82 } else if (vers
< 2) {
84 printf(" %s", ipaddr_string(&ni
->rip_dest
));
87 printf(" {%s", ipaddr_string(&ni
->rip_dest
));
88 if (ni
->rip_dest_mask
)
89 printf("/%s", ipaddr_string(&ni
->rip_dest_mask
));
91 printf("->%s", ipaddr_string(&ni
->rip_router
));
93 printf(" tag %04x", EXTRACT_16BITS(&ni
->rip_tag
));
96 printf("(%d)", EXTRACT_32BITS(&ni
->rip_metric
));
100 rip_print(const u_char
*dat
, u_int length
)
102 register const struct rip
*rp
;
103 register const struct rip_netinfo
*ni
;
104 register int i
, j
, trunc
;
106 i
= min(length
, snapend
- dat
) - sizeof(*rp
);
112 rp
= (struct rip
*)dat
;
113 switch (rp
->rip_cmd
) {
116 printf(" rip-req %d", length
);
119 case RIPCMD_RESPONSE
:
120 j
= length
/ sizeof(*ni
);
121 if (j
* sizeof(*ni
) != length
- 4)
122 printf(" rip-resp %d[%d]:", j
, length
);
124 printf(" rip-resp %d:", j
);
125 trunc
= (i
/ sizeof(*ni
)) != j
;
126 ni
= (struct rip_netinfo
*)(rp
+ 1);
127 for (; (i
-= sizeof(*ni
)) >= 0; ++ni
)
128 rip_entry_print(rp
->rip_vers
, ni
);
134 printf(" rip-traceon %d: \"", length
);
135 (void)fn_print((const u_char
*)(rp
+ 1), snapend
);
136 fputs("\"\n", stdout
);
139 case RIPCMD_TRACEOFF
:
140 printf(" rip-traceoff %d", length
);
144 printf(" rip-poll %d", length
);
147 case RIPCMD_POLLENTRY
:
148 printf(" rip-pollentry %d", length
);
152 printf(" rip-#%d %d", rp
->rip_cmd
, length
);
155 switch (rp
->rip_vers
) {
162 printf(" [vers %d]", rp
->rip_vers
);