160 lines
4.3 KiB
C
160 lines
4.3 KiB
C
/*
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* Copyright (c) 1989, 1990, 1991, 1993, 1994, 1996
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* The Regents of the University of California. 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: (1) source code distributions
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* retain the above copyright notice and this paragraph in its entirety, (2)
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* distributions including binary code include the above copyright notice and
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* this paragraph in its entirety in the documentation or other materials
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* provided with the distribution, and (3) all advertising materials mentioning
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* features or use of this software display the following acknowledgement:
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* ``This product includes software developed by the University of California,
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* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
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* the University nor the names of its contributors may be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#ifndef lint
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static char rcsid[] =
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"@(#) $Header: print-rip.c,v 1.34 96/07/23 14:17:26 leres Exp $ (LBL)";
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#endif
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#include <sys/param.h>
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#include <sys/time.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <netinet/ip_var.h>
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#include <netinet/udp.h>
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#include <netinet/udp_var.h>
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#include <stdio.h>
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#include "interface.h"
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#include "addrtoname.h"
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#include "extract.h" /* must come after interface.h */
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struct rip {
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u_char rip_cmd; /* request/response */
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u_char rip_vers; /* protocol version # */
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u_short rip_zero2; /* unused */
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};
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#define RIPCMD_REQUEST 1 /* want info */
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#define RIPCMD_RESPONSE 2 /* responding to request */
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#define RIPCMD_TRACEON 3 /* turn tracing on */
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#define RIPCMD_TRACEOFF 4 /* turn it off */
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#define RIPCMD_POLL 5 /* want info from everybody */
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#define RIPCMD_POLLENTRY 6 /* poll for entry */
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struct rip_netinfo {
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u_short rip_family;
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u_short rip_tag;
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u_int32_t rip_dest;
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u_int32_t rip_dest_mask;
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u_int32_t rip_router;
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u_int32_t rip_metric; /* cost of route */
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};
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static void
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rip_entry_print(register int vers, register const struct rip_netinfo *ni)
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{
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register u_char *cp, *ep;
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if (EXTRACT_16BITS(&ni->rip_family) != AF_INET) {
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printf(" [family %d:", EXTRACT_16BITS(&ni->rip_family));
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cp = (u_char *)&ni->rip_tag;
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ep = (u_char *)&ni->rip_metric + sizeof(ni->rip_metric);
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for (; cp < ep; cp += 2)
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printf(" %04x", EXTRACT_16BITS(cp));
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printf("]");
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} else if (vers < 2) {
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/* RFC 1058 */
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printf(" %s", ipaddr_string(&ni->rip_dest));
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} else {
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/* RFC 1723 */
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printf(" {%s", ipaddr_string(&ni->rip_dest));
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if (ni->rip_dest_mask)
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printf("/%s", ipaddr_string(&ni->rip_dest_mask));
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if (ni->rip_router)
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printf("->%s", ipaddr_string(&ni->rip_router));
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if (ni->rip_tag)
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printf(" tag %04x", EXTRACT_16BITS(&ni->rip_tag));
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printf("}");
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}
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printf("(%d)", EXTRACT_32BITS(&ni->rip_metric));
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}
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void
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rip_print(const u_char *dat, u_int length)
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{
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register const struct rip *rp;
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register const struct rip_netinfo *ni;
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register int i, j, trunc;
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i = min(length, snapend - dat) - (sizeof(*rp) - sizeof(*ni));
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if (i < 0)
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return;
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rp = (struct rip *)dat;
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switch (rp->rip_cmd) {
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case RIPCMD_REQUEST:
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printf(" rip-req %d", length);
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break;
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case RIPCMD_RESPONSE:
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j = length / sizeof(*ni);
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if (j * sizeof(*ni) != length - 4)
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printf(" rip-resp %d[%d]:", j, length);
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else
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printf(" rip-resp %d:", j);
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trunc = ((i / sizeof(*ni)) * sizeof(*ni) != i);
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ni = (struct rip_netinfo *)(rp + 1);
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for (; (i -= sizeof(*ni)) >= 0; ++ni)
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rip_entry_print(rp->rip_vers, ni);
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if (trunc)
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printf("[|rip]");
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break;
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case RIPCMD_TRACEON:
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printf(" rip-traceon %d: \"", length);
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(void)fn_print((const u_char *)(rp + 1), snapend);
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fputs("\"\n", stdout);
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break;
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case RIPCMD_TRACEOFF:
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printf(" rip-traceoff %d", length);
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break;
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case RIPCMD_POLL:
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printf(" rip-poll %d", length);
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break;
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case RIPCMD_POLLENTRY:
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printf(" rip-pollentry %d", length);
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break;
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default:
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printf(" rip-#%d %d", rp->rip_cmd, length);
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break;
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}
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switch (rp->rip_vers) {
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case 1:
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case 2:
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break;
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default:
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printf(" [vers %d]", rp->rip_vers);
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break;
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}
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}
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