140 lines
3.8 KiB
C
140 lines
3.8 KiB
C
/* $NetBSD: print-rip.c,v 1.5 1996/11/04 21:33:02 christos Exp $ */
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/*
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* Copyright (c) 1989, 1990, 1991, 1993, 1994
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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 1.20 94/06/14 20:18:47 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/types.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 <protocols/routed.h>
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#include <errno.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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static void
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rip_entry_print(register const struct netinfo *ni)
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{
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if (ntohs(ni->rip_family) != AF_INET) {
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register int i;
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printf(" [family %d:", ntohs(ni->rip_family));
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printf(" %04x", ni->rip_dst);
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printf("]");
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} else {
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struct sockaddr_in sin;
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sin.sin_addr.s_addr = ni->rip_dst;
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printf(" %s", ipaddr_string(&sin.sin_addr));
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/*
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* In RIP V1 the dst_mask and next hop fields are
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* supposed to be 0. If they are not, we assume that we are
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* dealing with a V2 packet. Some routers (eg. annexes),
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* in compatibility mode, advertize V1 packets with the V2
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* fields filled.
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*/
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if (ni->rip_dst_mask != 0) {
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u_int32_t mask = ni->rip_dst_mask;
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int bits = 32;
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while (mask)
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bits--, mask >>= 1;
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printf("/%d", bits);
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}
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if (ni->rip_router != 0) {
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sin.sin_addr.s_addr = ni->rip_router;
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printf(" -> %s", ipaddr_string(&sin.sin_addr));
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}
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if (ni->rip_tag)
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printf(" [port %d]", ni->rip_tag);
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}
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printf("(%d)", ntohl(ni->rip_metric));
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}
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void
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rip_print(const u_char *dat, int length)
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{
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register const struct rip *rp = (struct rip *)dat;
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register const struct netinfo *ni;
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register int amt = snapend - dat;
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register int i = min(length, amt) -
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(sizeof(struct rip) - sizeof(struct netinfo));
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int j;
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int trunc;
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if (i < 0)
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return;
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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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for (ni = rp->rip_nets; (i -= sizeof(*ni)) >= 0; ++ni)
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rip_entry_print(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: \"%s\"", length, rp->rip_tracefile);
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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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if (rp->rip_vers != RIP_VERSION_1)
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printf(" [vers %d]", rp->rip_vers);
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}
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