4.3BSD-Reno/src/sbin/route/route.c
/*
* Copyright (c) 1983, 1989 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted provided
* that: (1) source distributions retain this entire copyright notice and
* comment, and (2) distributions including binaries display the following
* acknowledgement: ``This product includes software developed by the
* University of California, Berkeley and its contributors'' in the
* documentation or other materials provided with the distribution and in
* all advertising materials mentioning features or use of this software.
* Neither the name of the University nor the names of its contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1983 The Regents of the University of California.\n\
All rights reserved.\n";
#endif /* not lint */
#ifndef lint
static char sccsid[] = "@(#)route.c 5.27 (Berkeley) 6/22/90";
#endif /* not lint */
#include <sys/param.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/file.h>
#include <sys/mbuf.h>
#include <sys/kinfo.h>
#include <net/route.h>
#include <net/if_dl.h>
#include <netinet/in.h>
#include <netns/ns.h>
#include <netiso/iso.h>
#include <netdb.h>
#include <stdio.h>
#include <errno.h>
#include <ctype.h>
#include <paths.h>
struct keytab {
char *kt_cp;
int kt_i;
} keywords[] = {
#include "keywords.h"
{0, 0}
};
struct ortentry route;
union sockunion {
struct sockaddr sa;
struct sockaddr_in sin;
struct sockaddr_ns sns;
struct sockaddr_iso siso;
struct sockaddr_dl sdl;
} so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp, *so_addrs[] =
{ &so_dst, &so_gate, &so_mask, &so_genmask, &so_ifa, &so_ifp, 0};
typedef union sockunion *sup;
int pid, rtm_addrs;
int s;
int forcehost, forcenet, doflush, nflag, af, qflag, Cflag, keyword();
int iflag, verbose, aflen = sizeof (struct sockaddr_in);
int locking, lockrest, debugonly;
struct sockaddr_in sin = { sizeof(sin), AF_INET };
struct rt_metrics rt_metrics;
u_long rtm_inits;
struct in_addr inet_makeaddr();
char *malloc(), *routename(), *netname();
extern char *iso_ntoa(), *link_ntoa();
#define kget(p, d) \
(lseek(kmem, (off_t)(p), 0), read(kmem, (char *)&(d), sizeof (d)))
usage(cp)
char *cp;
{
fprintf(stderr,
"usage: route [ -nqCv ] cmd [[ -<qualifers> ] args ]\n");
if (cp) fprintf(stderr, "(botched keyword: %s)\n", cp);
exit(1);
}
main(argc, argv)
int argc;
char *argv[];
{
char *argvp;
if (argc < 2)
usage((char *)0);
argc--, argv++;
for (; argc > 0 && argv[0][0] == '-'; argc--, argv++) {
for (argvp = argv[0]++; *argvp; argvp++)
switch (*argv[0]) {
case 'n':
nflag++;
break;
case 'q':
qflag++;
break;
case 'C':
Cflag++; /* Use old ioctls */
break;
case 'v':
verbose++;
}
}
pid = getpid();
if (Cflag)
s = socket(AF_INET, SOCK_RAW, 0);
else
s = socket(PF_ROUTE, SOCK_RAW, 0);
if (s < 0) {
perror("route: socket");
exit(1);
}
if (argc > 0) switch (keyword(*argv)) {
case K_ADD:
case K_CHANGE:
case K_DELETE:
newroute(argc, argv);
case K_MONITOR:
monitor();
case K_FLUSH:
flushroutes(argc, argv);
}
usage(*argv);
}
/*
* Purge all entries in the routing tables not
* associated with network interfaces.
*/
flushroutes(argc, argv)
char *argv[];
{
int bufsize, needed, seqno, rlen;
char *buf, *next, *lim;
register struct rt_msghdr *rtm;
struct {
struct rt_msghdr m_rtm;
union {
char u_saddrs[200];
struct sockaddr u_sa;
} m_u;
} m;
shutdown(s, 0); /* Don't want to read back our messages */
if (argc > 1) {
argv++;
if (argc == 2 && **argv == '-') switch (keyword(1 + *argv)) {
case K_INET: af = AF_INET; break;
case K_XNS: af = AF_NS; break;
case K_LINK: af = AF_LINK; break;
case K_ISO: case K_OSI: af = AF_ISO; break;
default: goto bad;
} else
bad: usage(*argv);
}
if ((needed = getkerninfo(KINFO_RT_DUMP, 0, 0, 0)) < 0)
{ perror("route-getkerninfo-estimate"); exit(1);}
if ((buf = malloc(needed)) == 0)
{ printf("out of space\n");; exit(1);}
if ((rlen = getkerninfo(KINFO_RT_DUMP, buf, &needed, 0)) < 0)
{ perror("actual retrieval of routing table"); exit(1);}
lim = buf + rlen;
for (next = buf; next < lim; next += rtm->rtm_msglen) {
rtm = (struct rt_msghdr *)next;
if ((rtm->rtm_flags & RTF_GATEWAY) == 0)
continue;
if (af) {
struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
if (sa->sa_family != af)
continue;
}
rtm->rtm_type = RTM_DELETE;
rtm->rtm_seq = seqno;
if ((rlen = write(s, next, rtm->rtm_msglen)) < 0) {
perror("writing to routing socket");
printf("got only %d for rlen\n", rlen);
break;
}
seqno++;
if (qflag)
continue;
if (verbose) {
print_rtmsg(rtm, rlen);
} else {
struct sockaddr *sa = &m.m_u.u_sa;
printf("%-20.20s ", (rtm->rtm_flags & RTF_HOST) ?
routename(sa) : netname(sa));
sa = (struct sockaddr *)(sa->sa_len + (char *)sa);
printf("%-20.20s ", routename(sa));
printf("done\n");
}
}
exit(0);
}
char *
routename(sa)
struct sockaddr *sa;
{
register char *cp;
static char line[50];
struct hostent *hp;
static char domain[MAXHOSTNAMELEN + 1];
static int first = 1;
char *index();
char *ns_print();
if (first) {
first = 0;
if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
(cp = index(domain, '.')))
(void) strcpy(domain, cp + 1);
else
domain[0] = 0;
}
switch (sa->sa_family) {
case AF_INET:
{ struct in_addr in;
in = ((struct sockaddr_in *)sa)->sin_addr;
cp = 0;
if (in.s_addr == INADDR_ANY)
cp = "default";
if (cp == 0 && !nflag) {
hp = gethostbyaddr(&in, sizeof (struct in_addr),
AF_INET);
if (hp) {
if ((cp = index(hp->h_name, '.')) &&
!strcmp(cp + 1, domain))
*cp = 0;
cp = hp->h_name;
}
}
if (cp)
strcpy(line, cp);
else {
#define C(x) ((x) & 0xff)
in.s_addr = ntohl(in.s_addr);
(void)sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24),
C(in.s_addr >> 16), C(in.s_addr >> 8), C(in.s_addr));
}
break;
}
case AF_NS:
return (ns_print((struct sockaddr_ns *)sa));
case AF_LINK:
return (link_ntoa((struct sockaddr_dl *)sa));
case AF_ISO:
(void) sprintf(line, "iso %s",
iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr));
break;
default:
{ u_short *s = (u_short *)sa->sa_data;
u_short *slim = s + ((sa->sa_len + 1)>>1);
char *cp = line + sprintf(line, "(%d)", sa->sa_family);
int n;
while (s < slim) {
n = sprintf(cp, " %x", *s);
s++; cp += n;
}
break;
}
}
return (line);
}
/*
* Return the name of the network whose address is given.
* The address is assumed to be that of a net or subnet, not a host.
*/
char *
netname(sa)
struct sockaddr *sa;
{
char *cp = 0;
static char line[50];
struct netent *np = 0;
u_long net, mask;
register u_long i;
int subnetshift;
char *ns_print();
switch (sa->sa_family) {
case AF_INET:
{ struct in_addr in;
in = ((struct sockaddr_in *)sa)->sin_addr;
i = in.s_addr = ntohl(in.s_addr);
if (in.s_addr == 0)
cp = "default";
else if (!nflag) {
if (IN_CLASSA(i)) {
mask = IN_CLASSA_NET;
subnetshift = 8;
} else if (IN_CLASSB(i)) {
mask = IN_CLASSB_NET;
subnetshift = 8;
} else {
mask = IN_CLASSC_NET;
subnetshift = 4;
}
/*
* If there are more bits than the standard mask
* would suggest, subnets must be in use.
* Guess at the subnet mask, assuming reasonable
* width subnet fields.
*/
while (in.s_addr &~ mask)
mask = (long)mask >> subnetshift;
net = in.s_addr & mask;
while ((mask & 1) == 0)
mask >>= 1, net >>= 1;
np = getnetbyaddr(net, AF_INET);
if (np)
cp = np->n_name;
}
if (cp)
strcpy(line, cp);
else if ((in.s_addr & 0xffffff) == 0)
(void)sprintf(line, "%u", C(in.s_addr >> 24));
else if ((in.s_addr & 0xffff) == 0)
(void)sprintf(line, "%u.%u", C(in.s_addr >> 24),
C(in.s_addr >> 16));
else if ((in.s_addr & 0xff) == 0)
(void)sprintf(line, "%u.%u.%u", C(in.s_addr >> 24),
C(in.s_addr >> 16), C(in.s_addr >> 8));
else
(void)sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24),
C(in.s_addr >> 16), C(in.s_addr >> 8),
C(in.s_addr));
break;
}
case AF_NS:
return (ns_print((struct sockaddr_ns *)sa));
break;
case AF_LINK:
return (link_ntoa((struct sockaddr_dl *)sa));
case AF_ISO:
(void) sprintf(line, "iso %s",
iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr));
break;
default:
{ u_short *s = (u_short *)sa->sa_data;
u_short *slim = s + ((sa->sa_len + 1)>>1);
char *cp = line + sprintf(line, "af %d:", sa->sa_family);
int n;
while (s < slim) {
n = sprintf(cp, " %x", *s);
s++; cp += n;
}
break;
}
}
return (line);
}
set_metric(value, key)
char *value;
{
int flag = 0;
u_long noval, *valp = &noval;
switch (key) {
#define caseof(x, y, z) case x: valp = &rt_metrics.z; flag = y; break
caseof(K_MTU, RTV_MTU, rmx_mtu);
caseof(K_HOPCOUNT, RTV_HOPCOUNT, rmx_hopcount);
caseof(K_EXPIRE, RTV_EXPIRE, rmx_expire);
caseof(K_RECVPIPE, RTV_RPIPE, rmx_recvpipe);
caseof(K_SENDPIPE, RTV_SPIPE, rmx_sendpipe);
caseof(K_SSTHRESH, RTV_SSTHRESH, rmx_ssthresh);
caseof(K_RTT, RTV_RTT, rmx_rtt);
caseof(K_RTTVAR, RTV_RTTVAR, rmx_rttvar);
}
rtm_inits |= flag;
if (lockrest || locking)
rt_metrics.rmx_locks |= flag;
if (locking)
locking = 0;
*valp = atoi(value);
}
newroute(argc, argv)
int argc;
register char **argv;
{
struct sockaddr_in *sin;
char *cmd, *dest, *gateway, *mask;
int ishost, metric = 0, ret, attempts, oerrno, flags = 0, next;
int key;
struct hostent *hp = 0;
extern int errno;
shutdown(s, 0); /* Don't want to read back our messages */
cmd = argv[0];
while (--argc > 0) {
if (**(++argv)== '-') {
switch(key = keyword(1 + *argv)) {
case K_LINK:
af = AF_LINK;
aflen = sizeof(struct sockaddr_dl);
break;
case K_OSI:
case K_ISO:
af = AF_ISO;
aflen = sizeof(struct sockaddr_iso);
break;
case K_INET:
af = AF_INET;
aflen = sizeof(struct sockaddr_in);
break;
case K_XNS:
af = AF_NS;
aflen = sizeof(struct sockaddr_ns);
break;
case K_IFACE:
case K_INTERFACE:
iflag++;
break;
case K_LOCK:
locking = 1;
break;
case K_LOCKREST:
lockrest = 1;
break;
case K_HOST:
forcehost++;
break;
case K_NETMASK:
argc--;
(void) getaddr(RTA_NETMASK, *++argv, 0);
/* FALLTHROUGH */
case K_NET:
forcenet++;
break;
case K_CLONING:
flags |= RTF_CLONING;
break;
case K_XRESOLVE:
flags |= RTF_XRESOLVE;
break;
case K_GENMASK:
argc--;
(void) getaddr(RTA_GENMASK, *++argv, 0);
break;
case K_MTU:
case K_HOPCOUNT:
case K_EXPIRE:
case K_RECVPIPE:
case K_SENDPIPE:
case K_SSTHRESH:
case K_RTT:
case K_RTTVAR:
argc--;
set_metric(*++argv, key);
break;
default:
usage(1+*argv);
}
} else {
if ((rtm_addrs & RTA_DST) == 0) {
dest = *argv;
ishost = getaddr(RTA_DST, *argv, &hp);
} else if ((rtm_addrs & RTA_GATEWAY) == 0) {
gateway = *argv;
(void) getaddr(RTA_GATEWAY, *argv, &hp);
} else {
int ret = atoi(*argv);
if (ret == 0) {
printf("%s,%s", "old usage of trailing 0",
"assuming route to if\n");
iflag = 1;
continue;
} else if (ret > 0 && ret < 10) {
printf("old usage of trailing digit, ");
printf("assuming route via gateway\n");
iflag = 0;
continue;
}
(void) getaddr(RTA_NETMASK, *argv, 0);
}
}
}
if (forcehost)
ishost = 1;
if (forcenet)
ishost = 0;
flags |= RTF_UP;
if (ishost)
flags |= RTF_HOST;
if (iflag == 0)
flags |= RTF_GATEWAY;
for (attempts = 1; ; attempts++) {
errno = 0;
if (Cflag && (af == AF_INET || af == AF_NS)) {
route.rt_flags = flags;
route.rt_dst = so_dst.sa;
route.rt_gateway = so_gate.sa;
if ((ret = ioctl(s, *cmd == 'a' ? SIOCADDRT : SIOCDELRT,
(caddr_t)&route)) == 0)
break;
} else {
if ((ret = rtmsg(*cmd, flags)) == 0);
break;
}
if (errno != ENETUNREACH && errno != ESRCH)
break;
if (hp && hp->h_addr_list[1]) {
hp->h_addr_list++;
bcopy(hp->h_addr_list[0], (caddr_t)&so_dst.sin.sin_addr,
hp->h_length);
} else
break;
}
oerrno = errno;
printf("%s %s %s: gateway %s", cmd, ishost? "host" : "net",
dest, gateway);
if (attempts > 1 && ret == 0)
printf(" (%s)",
inet_ntoa(((struct sockaddr_in *)&route.rt_gateway)->sin_addr));
if (ret == 0)
printf("\n");
else {
printf(": ");
fflush(stdout);
errno = oerrno;
error("");
}
exit(0);
}
error(cmd)
char *cmd;
{
extern int errno;
switch(errno) {
case ESRCH:
printf("not in table\n");
break;
case EBUSY:
printf("entry in use\n");
break;
case ENOBUFS:
printf("routing table overflow\n");
break;
default:
printf("ioctl returns %d\n", errno);
perror(cmd);
}
fflush(stdout);
errno = 0;
}
char *
savestr(s)
char *s;
{
char *sav;
sav = malloc(strlen(s) + 1);
if (sav == NULL) {
fprintf("route: out of memory\n");
exit(1);
}
strcpy(sav, s);
return (sav);
}
inet_makenetandmask(net, sin)
u_long net;
register struct sockaddr_in *sin;
{
u_long addr;
u_long mask = 0;
register char *cp;
rtm_addrs |= RTA_NETMASK;
if (net == 0)
mask = addr = 0;
else if (net < 128) {
addr = net << IN_CLASSA_NSHIFT;
mask = IN_CLASSA_NET;
} else if (net < 65536) {
addr = net << IN_CLASSB_NSHIFT;
mask = IN_CLASSB_NET;
} else if (net < 16777216L) {
addr = net << IN_CLASSC_NSHIFT;
mask = IN_CLASSC_NET;
} else {
addr = net;
if ((addr & IN_CLASSA_HOST) == 0)
mask = IN_CLASSA_NET;
else if ((addr & IN_CLASSB_HOST) == 0)
mask = IN_CLASSB_NET;
else if ((addr & IN_CLASSC_HOST) == 0)
mask = IN_CLASSC_NET;
else
mask = -1;
}
sin->sin_addr.s_addr = htonl(addr);
sin = &so_mask.sin;
sin->sin_addr.s_addr = htonl(mask);
sin->sin_len = 0;
sin->sin_family = 0;
cp = (char *)(1 + &(sin->sin_addr));
while (*--cp == 0 && cp > (char *)sin)
;
sin->sin_len = 1 + cp - (char *)sin;
}
/*
* Interpret an argument as a network address of some kind,
* returning 1 if a host address, 0 if a network address.
*/
getaddr(which, s, hpp)
char *s;
struct hostent **hpp;
{
register union sockunion *su;
struct ns_addr ns_addr();
struct iso_addr *iso_addr();
struct hostent *hp;
struct netent *np;
u_long val;
if (af == 0) {
af = AF_INET;
aflen = sizeof(struct sockaddr_in);
}
rtm_addrs |= which;
switch (which) {
case RTA_DST: su = so_addrs[0]; su->sa.sa_family = af; break;
case RTA_GATEWAY: su = so_addrs[1]; su->sa.sa_family = af; break;
case RTA_NETMASK: su = so_addrs[2]; break;
case RTA_GENMASK: su = so_addrs[3]; break;
default: usage("Internal Error"); /*NOTREACHED*/
}
su->sa.sa_len = aflen;
if (strcmp(s, "default") == 0) {
switch (which) {
case RTA_DST:
forcenet++;
getaddr(RTA_NETMASK, s, 0);
break;
case RTA_NETMASK:
case RTA_GENMASK:
su->sa.sa_len = 0;
}
return 0;
}
if (af == AF_NS)
goto do_xns;
if (af == AF_OSI)
goto do_osi;
if (af == AF_LINK)
goto do_link;
if (hpp == 0) hpp = &hp;
*hpp = 0;
if (((val = inet_addr(s)) != -1) &&
(which != RTA_DST || forcenet == 0)) {
su->sin.sin_addr.s_addr = val;
if (inet_lnaof(su->sin.sin_addr) != INADDR_ANY)
return (1);
else {
val = ntohl(val);
out: if (which == RTA_DST)
inet_makenetandmask(val, &su->sin);
return (0);
}
}
val = inet_network(s);
if (val != -1) {
goto out;
}
np = getnetbyname(s);
if (np) {
val = np->n_net;
goto out;
}
hp = gethostbyname(s);
if (hp) {
*hpp = hp;
su->sin.sin_family = hp->h_addrtype;
bcopy(hp->h_addr, &su->sin.sin_addr, hp->h_length);
return (1);
}
fprintf(stderr, "%s: bad value\n", s);
exit(1);
do_xns:
if (val == 0)
return(0);
if (which == RTA_DST) {
extern short ns_bh[3];
struct sockaddr_ns *sms = &(so_mask.sns);
bzero((char *)sms, sizeof(*sms));
sms->sns_family = 0;
sms->sns_len = 6;
sms->sns_addr.x_net = *(union ns_net *)ns_bh;
rtm_addrs |= RTA_NETMASK;
}
su->sns.sns_addr = ns_addr(s);
return (!ns_nullhost(su->sns.sns_addr));
do_osi:
su->siso.siso_addr = *iso_addr(s);
if (which == RTA_NETMASK || which == RTA_GENMASK) {
register char *cp = (char *)TSEL(&su->siso);
su->siso.siso_nlen = 0;
do {--cp ;} while ((cp > (char *)su) && (*cp == 0));
su->siso.siso_len = 1 + cp - (char *)su;
}
return (1);
do_link:
link_addr(s, &su->sdl);
return (1);
}
short ns_nullh[] = {0,0,0};
short ns_bh[] = {-1,-1,-1};
char *
ns_print(sns)
struct sockaddr_ns *sns;
{
struct ns_addr work;
union { union ns_net net_e; u_long long_e; } net;
u_short port;
static char mybuf[50], cport[10], chost[25];
char *host = "";
register char *p; register u_char *q; u_char *q_lim;
work = sns->sns_addr;
port = ntohs(work.x_port);
work.x_port = 0;
net.net_e = work.x_net;
if (ns_nullhost(work) && net.long_e == 0) {
if (port ) {
(void)sprintf(mybuf, "*.%xH", port);
upHex(mybuf);
} else
(void)sprintf(mybuf, "*.*");
return (mybuf);
}
if (bcmp(ns_bh, work.x_host.c_host, 6) == 0) {
host = "any";
} else if (bcmp(ns_nullh, work.x_host.c_host, 6) == 0) {
host = "*";
} else {
q = work.x_host.c_host;
(void)sprintf(chost, "%02x%02x%02x%02x%02x%02xH",
q[0], q[1], q[2], q[3], q[4], q[5]);
for (p = chost; *p == '0' && p < chost + 12; p++);
host = p;
}
if (port)
(void)sprintf(cport, ".%xH", htons(port));
else
*cport = 0;
(void)sprintf(mybuf,"%xH.%s%s", ntohl(net.long_e), host, cport);
upHex(mybuf);
return(mybuf);
}
upHex(p0)
char *p0;
{
register char *p = p0;
for (; *p; p++) switch (*p) {
case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
*p += ('A' - 'a');
}
}
monitor()
{
int n;
char msg[2048];
verbose = 1;
for(;;) {
n = read(s, msg, 2048);
printf("got message of size %d\n", n);
print_rtmsg((struct rt_msghdr *)msg);
}
}
struct {
struct rt_msghdr m_rtm;
char m_space[512];
} m_rtmsg;
rtmsg(cmd, flags)
{
static int seq;
int rlen;
extern int errno;
register char *cp = m_rtmsg.m_space;
register int l;
errno = 0;
bzero((char *)&m_rtmsg, sizeof(m_rtmsg));
if (cmd == 'a')
cmd = RTM_ADD;
else if (cmd == 'c')
cmd = RTM_CHANGE;
else
cmd = RTM_DELETE;
m_rtmsg.m_rtm.rtm_flags = flags;
m_rtmsg.m_rtm.rtm_version = RTM_VERSION;
m_rtmsg.m_rtm.rtm_seq = ++seq;
m_rtmsg.m_rtm.rtm_addrs = rtm_addrs;
m_rtmsg.m_rtm.rtm_rmx = rt_metrics;
m_rtmsg.m_rtm.rtm_inits = rtm_inits;
#define ROUND(a) (1 + (((a) - 1) | (sizeof(long) - 1)))
#define NEXTADDR(w, u) { if (rtm_addrs & (w)) {l = (u).sa.sa_len;\
if(verbose)sodump(&(u),"u");if(l == 0) l = sizeof(int); l = ROUND(l);\
bcopy((char *)&(u), cp, l); cp += l;}}
NEXTADDR(RTA_DST, so_dst);
NEXTADDR(RTA_GATEWAY, so_gate);
NEXTADDR(RTA_NETMASK, so_mask);
NEXTADDR(RTA_GENMASK, so_genmask);
m_rtmsg.m_rtm.rtm_msglen = l = cp - (char *)&m_rtmsg;
m_rtmsg.m_rtm.rtm_type = cmd;
if (verbose)
print_rtmsg(&m_rtmsg.m_rtm, l);
if (debugonly)
return 0;
if ((rlen = write(s, (char *)&m_rtmsg, l)) < 0) {
perror("writing to routing socket");
printf("got only %d for rlen\n", rlen);
return (-1);
}
return (0);
}
char *msgtypes[] = {
"",
"RTM_ADD: Add Route",
"RTM_DELETE: Delete Route",
"RTM_CHANGE: Change Metrics or flags",
"RTM_GET: Report Metrics",
"RTM_LOSING: Kernel Suspects Partitioning",
"RTM_REDIRECT: Told to use different route",
"RTM_MISS: Lookup failed on this address",
"RTM_LOCK: fix specified metrics",
"RTM_OLDADD: caused by SIOCADDRT",
"RTM_OLDDEL: caused by SIOCDELRT",
0, };
char metricnames[] =
"\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount\1mtu";
char routeflags[] =
"\1UP\2GATEWAY\3HOST\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT\011CLONING\012XRESOLVE";
#define ROUNDUP(a) ((char *)(1 + (((((int)a)) - 1) | (sizeof(long) - 1))))
print_rtmsg(rtm, n)
register struct rt_msghdr *rtm;
{
char *cp;
register struct sockaddr *sa;
int i;
if (verbose == 0)
return;
if (rtm->rtm_version != RTM_VERSION) {
printf("routing message version %d not understood\n",
rtm->rtm_version);
} else {
printf("%s\npid: %d, len %d, seq %d, errno %d, flags:",
msgtypes[rtm->rtm_type], rtm->rtm_pid, rtm->rtm_msglen,
rtm->rtm_seq, rtm->rtm_errno);
bprintf(stdout, rtm->rtm_flags, routeflags);
printf("\nlocks: "); bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames);
printf(" inits: "); bprintf(stdout, rtm->rtm_inits, metricnames);
printf("\nsockaddrs: ");
bprintf(stdout, rtm->rtm_addrs,
"\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR");
putchar('\n');
cp = ((char *)(rtm + 1));
if (rtm->rtm_addrs)
for (i = 1; i; i <<= 1)
if (i & rtm->rtm_addrs) {
sa = (struct sockaddr *)cp;
printf(" %s", routename(sa));
cp = ROUNDUP(cp + sa->sa_len);
}
putchar('\n');
}
fflush(stdout);
}
bprintf(fp, b, s)
register FILE *fp;
register int b;
register u_char *s;
{
register int i;
int gotsome = 0;
if (b == 0)
return;
while (i = *s++) {
if (b & (1 << (i-1))) {
if (gotsome == 0) i = '<'; else i = ',';
putc(i, fp);
gotsome = 1;
for (; (i = *s) > 32; s++)
putc(i, fp);
} else
while (*s > 32)
s++;
}
if (gotsome)
putc('>', fp);
}
int
keyword(cp)
char *cp;
{
register struct keytab *kt = keywords;
while (kt->kt_cp && strcmp(kt->kt_cp, cp))
kt++;
return kt->kt_i;
}
sodump(su, which)
register union sockunion *su;
char *which;
{
switch (su->sa.sa_family) {
case AF_LINK:
printf("%s: link %s; ", which, link_ntoa(&su->sdl));
break;
case AF_ISO:
printf("%s: iso %s; ", which, iso_ntoa(&su->siso.siso_addr));
break;
case AF_INET:
printf("%s: inet %s; ", which, inet_ntoa(su->sin.sin_addr));
break;
case AF_NS:
printf("%s: xns %s; ", which, ns_ntoa(&su->sns.sns_addr));
break;
}
fflush(stdout);
}