#ifndef lint
static const char rcsid[] =
"@(#) $Header: /cvs/Darwin/Commands/NeXT/network_cmds/tcpdump.tproj/print-rip.c,v 1.1.1.1 1999/05/02 03:58:34 wsanchez Exp $ (LBL)";
#endif
#include <sys/param.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/ip_var.h>
#include <netinet/udp.h>
#include <netinet/udp_var.h>
#include <stdio.h>
#include "interface.h"
#include "addrtoname.h"
#include "extract.h"
struct rip {
u_char rip_cmd;
u_char rip_vers;
u_short rip_zero2;
};
#define RIPCMD_REQUEST 1
#define RIPCMD_RESPONSE 2
#define RIPCMD_TRACEON 3
#define RIPCMD_TRACEOFF 4
#define RIPCMD_POLL 5
#define RIPCMD_POLLENTRY 6
struct rip_netinfo {
u_short rip_family;
u_short rip_tag;
u_int32_t rip_dest;
u_int32_t rip_dest_mask;
u_int32_t rip_router;
u_int32_t rip_metric;
};
static void
rip_entry_print(register int vers, register const struct rip_netinfo *ni)
{
register u_char *cp, *ep;
if (EXTRACT_16BITS(&ni->rip_family) != AF_INET) {
printf(" [family %d:", EXTRACT_16BITS(&ni->rip_family));
cp = (u_char *)&ni->rip_tag;
ep = (u_char *)&ni->rip_metric + sizeof(ni->rip_metric);
for (; cp < ep; cp += 2)
printf(" %04x", EXTRACT_16BITS(cp));
printf("]");
} else if (vers < 2) {
printf(" %s", ipaddr_string(&ni->rip_dest));
} else {
printf(" {%s", ipaddr_string(&ni->rip_dest));
if (ni->rip_dest_mask)
printf("/%s", ipaddr_string(&ni->rip_dest_mask));
if (ni->rip_router)
printf("->%s", ipaddr_string(&ni->rip_router));
if (ni->rip_tag)
printf(" tag %04x", EXTRACT_16BITS(&ni->rip_tag));
printf("}");
}
printf("(%d)", EXTRACT_32BITS(&ni->rip_metric));
}
void
rip_print(const u_char *dat, u_int length)
{
register const struct rip *rp;
register const struct rip_netinfo *ni;
register int i, j, trunc;
i = min(length, snapend - dat) - sizeof(*rp);
if (i < 0)
return;
rp = (struct rip *)dat;
switch (rp->rip_cmd) {
case RIPCMD_REQUEST:
printf(" rip-req %d", length);
break;
case RIPCMD_RESPONSE:
j = length / sizeof(*ni);
if (j * sizeof(*ni) != length - 4)
printf(" rip-resp %d[%d]:", j, length);
else
printf(" rip-resp %d:", j);
trunc = ((i / sizeof(*ni)) * sizeof(*ni) != i);
ni = (struct rip_netinfo *)(rp + 1);
for (; (i -= sizeof(*ni)) >= 0; ++ni)
rip_entry_print(rp->rip_vers, ni);
if (trunc)
printf("[|rip]");
break;
case RIPCMD_TRACEON:
printf(" rip-traceon %d: \"", length);
(void)fn_print((const u_char *)(rp + 1), snapend);
fputs("\"\n", stdout);
break;
case RIPCMD_TRACEOFF:
printf(" rip-traceoff %d", length);
break;
case RIPCMD_POLL:
printf(" rip-poll %d", length);
break;
case RIPCMD_POLLENTRY:
printf(" rip-pollentry %d", length);
break;
default:
printf(" rip-#%d %d", rp->rip_cmd, length);
break;
}
switch (rp->rip_vers) {
case 1:
case 2:
break;
default:
printf(" [vers %d]", rp->rip_vers);
break;
}
}