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NetBSD/sbin/route/route.c

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/* $NetBSD: route.c,v 1.75 2005/02/05 14:05:23 xtraeme Exp $ */
/*
* Copyright (c) 1983, 1989, 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. 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 BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1983, 1989, 1991, 1993\n\
The Regents of the University of California. All rights reserved.\n");
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)route.c 8.6 (Berkeley) 4/28/95";
#else
__RCSID("$NetBSD: route.c,v 1.75 2005/02/05 14:05:23 xtraeme Exp $");
#endif
#endif /* not lint */
#include <sys/param.h>
#include <sys/file.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/mbuf.h>
#include <sys/sysctl.h>
#include <net/if.h>
#include <net/route.h>
#include <net/if_dl.h>
#include <netinet/in.h>
#include <netatalk/at.h>
#include <netns/ns.h>
#include <netiso/iso.h>
#include <netccitt/x25.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <errno.h>
#include <unistd.h>
#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <paths.h>
#include <err.h>
#include "keywords.h"
#include "extern.h"
typedef union sockunion *sup;
static void usage(char *)__attribute__((__noreturn__));
static char *any_ntoa(const struct sockaddr *);
static void set_metric(char *, int);
static int newroute(int, char **);
static void inet_makenetandmask(u_int32_t, struct sockaddr_in *);
#ifdef INET6
static int inet6_makenetandmask(struct sockaddr_in6 *);
#endif
static int getaddr(int, char *, struct hostent **);
static int flushroutes(int, char *[], int);
#ifndef SMALL
static int prefixlen(char *);
static int x25_makemask(void);
static void interfaces(void);
static void monitor(void);
static void print_getmsg(struct rt_msghdr *, int);
static const char *linkstate(struct if_msghdr *);
#endif /* SMALL */
static int rtmsg(int, int );
static void mask_addr(void);
static void print_rtmsg(struct rt_msghdr *, int);
static void pmsg_common(struct rt_msghdr *);
static void pmsg_addrs(char *, int);
static void bprintf(FILE *, int, u_char *);
static int keyword(char *);
static void sodump(sup, char *);
static void sockaddr(char *, struct sockaddr *);
union sockunion {
struct sockaddr sa;
struct sockaddr_in sin;
#ifdef INET6
struct sockaddr_in6 sin6;
#endif
struct sockaddr_at sat;
struct sockaddr_dl sdl;
#ifndef SMALL
struct sockaddr_ns sns;
struct sockaddr_iso siso;
struct sockaddr_x25 sx25;
#endif /* SMALL */
} so_dst, so_gate, so_mask, so_genmask, so_ifa, so_ifp;
int pid, rtm_addrs;
int sock;
int forcehost, forcenet, doflush, nflag, af, qflag, tflag;
int iflag, verbose, aflen = sizeof (struct sockaddr_in);
int locking, lockrest, debugonly, shortoutput, rv;
struct rt_metrics rt_metrics;
u_int32_t rtm_inits;
short ns_nullh[] = {0,0,0};
short ns_bh[] = {-1,-1,-1};
static void
usage(char *cp)
{
if (cp)
warnx("botched keyword: %s", cp);
(void) fprintf(stderr,
"usage: %s [ -fnqvs ] cmd [[ -<qualifers> ] args ]\n",
getprogname());
exit(1);
/* NOTREACHED */
}
#define ROUNDUP(a) \
((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
int
main(int argc, char **argv)
{
int ch;
if (argc < 2)
usage(NULL);
while ((ch = getopt(argc, argv, "fnqvdts")) != -1)
switch(ch) {
case 'f':
doflush = 1;
break;
case 'n':
nflag = 1;
break;
case 'q':
qflag = 1;
break;
case 'v':
verbose = 1;
break;
case 't':
tflag = 1;
break;
case 'd':
debugonly = 1;
break;
case 's':
shortoutput = 1;
break;
case '?':
default:
usage(NULL);
/*NOTREACHED*/
}
argc -= optind;
argv += optind;
pid = getpid();
if (tflag)
sock = open("/dev/null", O_WRONLY, 0);
else
sock = socket(PF_ROUTE, SOCK_RAW, 0);
if (sock < 0)
err(1, "socket");
if (*argv == NULL) {
if (doflush)
ch = K_FLUSH;
else
goto no_cmd;
} else
ch = keyword(*argv);
switch (ch) {
#ifndef SMALL
case K_GET:
#endif /* SMALL */
case K_CHANGE:
case K_ADD:
case K_DELETE:
if (doflush)
(void)flushroutes(1, argv, 0);
return newroute(argc, argv);
case K_SHOW:
show(argc, argv);
return 0;
#ifndef SMALL
case K_MONITOR:
monitor();
return 0;
#endif /* SMALL */
case K_FLUSH:
return flushroutes(argc, argv, 0);
case K_FLUSHALL:
return flushroutes(argc, argv, 1);
no_cmd:
default:
usage(*argv);
/*NOTREACHED*/
}
}
/*
* Purge all entries in the routing tables not
* associated with network interfaces.
*/
static int
flushroutes(int argc, char *argv[], int doall)
{
size_t needed;
int mib[6], rlen, seqno;
char *buf, *next, *lim;
struct rt_msghdr *rtm;
af = 0;
shutdown(sock, SHUT_RD); /* Don't want to read back our messages */
if (argc > 1) {
argv++;
if (argc == 2 && **argv == '-')
switch (keyword(*argv + 1)) {
case K_INET:
af = AF_INET;
break;
#ifdef INET6
case K_INET6:
af = AF_INET6;
break;
#endif
#ifndef SMALL
case K_ATALK:
af = AF_APPLETALK;
break;
case K_XNS:
af = AF_NS;
break;
#endif /* SMALL */
case K_LINK:
af = AF_LINK;
break;
#ifndef SMALL
case K_ISO:
case K_OSI:
af = AF_ISO;
break;
case K_X25:
af = AF_CCITT;
#endif /* SMALL */
default:
goto bad;
} else
bad: usage(*argv);
}
mib[0] = CTL_NET;
mib[1] = PF_ROUTE;
mib[2] = 0; /* protocol */
mib[3] = 0; /* wildcard address family */
mib[4] = NET_RT_DUMP;
mib[5] = 0; /* no flags */
if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
err(1, "route-sysctl-estimate");
if (needed == 0)
return 0;
if ((buf = malloc(needed)) == NULL)
err(1, "malloc");
if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
err(1, "actual retrieval of routing table");
lim = buf + needed;
if (verbose) {
(void) printf("Examining routing table from sysctl\n");
if (af) printf("(address family %s)\n", (*argv + 1));
}
seqno = 0; /* ??? */
for (next = buf; next < lim; next += rtm->rtm_msglen) {
rtm = (struct rt_msghdr *)next;
if (verbose)
print_rtmsg(rtm, rtm->rtm_msglen);
if (!(rtm->rtm_flags & (RTF_GATEWAY | RTF_STATIC |
RTF_LLINFO)) && !doall)
continue;
if (af) {
struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
if (sa->sa_family != af)
continue;
}
if (debugonly)
continue;
rtm->rtm_type = RTM_DELETE;
rtm->rtm_seq = seqno;
rlen = write(sock, next, rtm->rtm_msglen);
if (rlen < (int)rtm->rtm_msglen) {
warn("write to routing socket, got %d for rlen", rlen);
break;
}
seqno++;
if (qflag)
continue;
if (verbose)
print_rtmsg(rtm, rlen);
else {
struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
(void) printf("%-20.20s ",
routename(sa, NULL, rtm->rtm_flags));
sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + (char *)sa);
(void) printf("%-20.20s ",
routename(sa, NULL, RTF_HOST));
(void) printf("done\n");
}
}
return 0;
}
static char hexlist[] = "0123456789abcdef";
static char *
any_ntoa(const struct sockaddr *sa)
{
static char obuf[3 * 256];
const char *in;
char *out;
int len;
len = sa->sa_len - offsetof(struct sockaddr, sa_data);
in = sa->sa_data;
out = obuf;
do {
*out++ = hexlist[(*in >> 4) & 15];
*out++ = hexlist[(*in++) & 15];
*out++ = '.';
} while (--len > 0);
out[-1] = '\0';
return obuf;
}
int
netmask_length(struct sockaddr *nm, int family)
{
static int
/* number of bits in a nibble */
_t[] = { 0,1,1,2,1,2,2,3,1,2,2,3,2,3,3,4 },
/* good nibbles are 1111, 1110, 1100, 1000, 0000 */
_g[] = { 1,0,0,0,0,0,0,0,1,0,0,0,1,0,1,1 };
int mask, good, zeroes, maskbytes, bit, i;
unsigned char *maskdata;
if (nm == NULL)
return 0;
mask = 0;
good = 1;
zeroes = 0;
switch (family) {
case AF_INET: {
struct sockaddr_in *nsin = (struct sockaddr_in *)nm;
maskdata = (unsigned char *) &nsin->sin_addr;
maskbytes = nsin->sin_len -
((caddr_t)&nsin->sin_addr - (caddr_t)nsin);
break;
}
case AF_INET6: {
struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nm;
maskdata = (unsigned char *) &sin6->sin6_addr;
maskbytes = sin6->sin6_len -
((caddr_t)&sin6->sin6_addr - (caddr_t)sin6);
break;
}
default:
return 0;
}
/*
* Count the bits in the nibbles of the mask, and marking the
* netmask as not good (or at best, non-standard and very
* discouraged, in the case of AF_INET) if we find either of
* a nibble with non-contiguous bits, or a non-zero nibble
* after we've found a zero nibble.
*/
for (i = 0; i < maskbytes; i++) {
/* high nibble */
mask += bit = _t[maskdata[i] >> 4];
good &= _g[maskdata[i] >> 4];
if (zeroes && bit)
good = 0;
if (bit == 0)
zeroes = 1;
/* low nibble */
mask += bit = _t[maskdata[i] & 0xf];
good &= _g[maskdata[i] & 0xf];
if (zeroes && bit)
good = 0;
if (bit == 0)
zeroes = 1;
}
/*
* Always return the number of bits found, but as a negative
* if the mask wasn't one we like.
*/
return good ? mask : -mask;
}
char *
netmask_string(struct sockaddr *mask, int len)
{
static char smask[16];
if (len >= 0)
snprintf(smask, sizeof(smask), "%d", len);
else {
/* XXX AF_INET only?! */
struct sockaddr_in nsin;
memset(&nsin, 0, sizeof(nsin));
memcpy(&nsin, mask, mask->sa_len);
snprintf(smask, sizeof(smask), "%s", inet_ntoa(nsin.sin_addr));
}
return smask;
}
char *
routename(struct sockaddr *sa, struct sockaddr *nm, int flags)
{
char *cp;
static char line[50];
struct hostent *hp;
static char domain[MAXHOSTNAMELEN + 1];
static int first = 1;
struct in_addr in;
int nml;
if ((flags & RTF_HOST) == 0)
return netname(sa, nm);
if (first) {
first = 0;
if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
(cp = strchr(domain, '.')))
(void)strlcpy(domain, cp + 1, sizeof(domain));
else
domain[0] = 0;
}
if (sa->sa_len == 0)
strlcpy(line, "default", sizeof(line));
else switch (sa->sa_family) {
case AF_INET:
in = ((struct sockaddr_in *)sa)->sin_addr;
nml = netmask_length(nm, AF_INET);
cp = 0;
if (in.s_addr == INADDR_ANY || sa->sa_len < 4) {
if (nml == 0)
cp = "default";
else {
static char notdefault[sizeof(NOTDEFSTRING)];
snprintf(notdefault, sizeof(notdefault),
"0.0.0.0/%s", netmask_string(nm, nml));
cp = notdefault;
}
}
if (cp == 0 && !nflag) {
hp = gethostbyaddr((char *)&in, sizeof (struct in_addr),
AF_INET);
if (hp) {
if ((cp = strchr(hp->h_name, '.')) &&
!strcmp(cp + 1, domain))
*cp = 0;
cp = hp->h_name;
}
}
if (cp)
(void)strlcpy(line, cp, sizeof(line));
else
(void)strlcpy(line, inet_ntoa(in), sizeof(line));
break;
case AF_LINK:
return (link_ntoa((struct sockaddr_dl *)sa));
#ifndef SMALL
#ifdef INET6
case AF_INET6:
{
struct sockaddr_in6 sin6;
int niflags;
niflags = 0;
if (nflag)
niflags |= NI_NUMERICHOST;
memset(&sin6, 0, sizeof(sin6));
memcpy(&sin6, sa, sa->sa_len);
sin6.sin6_len = sizeof(struct sockaddr_in6);
sin6.sin6_family = AF_INET6;
#ifdef __KAME__
if (sa->sa_len == sizeof(struct sockaddr_in6) &&
(IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) ||
IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) &&
sin6.sin6_scope_id == 0) {
sin6.sin6_scope_id =
ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
sin6.sin6_addr.s6_addr[2] = 0;
sin6.sin6_addr.s6_addr[3] = 0;
}
#endif
nml = netmask_length(nm, AF_INET6);
if (IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr)) {
if (nml == 0)
strlcpy(line, "::", sizeof(line));
else
/* noncontiguous never happens in ipv6 */
snprintf(line, sizeof(line), "::/%d", nml);
}
else if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
line, sizeof(line), NULL, 0, niflags) != 0)
strlcpy(line, "invalid", sizeof(line));
break;
}
#endif
case AF_NS:
return (ns_print((struct sockaddr_ns *)sa));
case AF_ISO:
(void)snprintf(line, sizeof line, "iso %s",
iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr));
break;
case AF_APPLETALK:
(void) snprintf(line, sizeof(line), "atalk %d.%d",
((struct sockaddr_at *)sa)->sat_addr.s_net,
((struct sockaddr_at *)sa)->sat_addr.s_node);
break;
#endif /* SMALL */
default:
(void)snprintf(line, sizeof line, "(%d) %s",
sa->sa_family, any_ntoa(sa));
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(struct sockaddr *sa, struct sockaddr *nm)
{
char *cp = 0;
static char line[50];
struct netent *np = 0;
u_int32_t net, mask;
u_int32_t i;
int subnetshift, nml;
struct in_addr in;
switch (sa->sa_family) {
case AF_INET:
in = ((struct sockaddr_in *)sa)->sin_addr;
i = ntohl(in.s_addr);
nml = netmask_length(nm, AF_INET);
if (i == 0) {
if (nml == 0)
cp = "default";
else {
static char notdefault[sizeof(NOTDEFSTRING)];
snprintf(notdefault, sizeof(notdefault),
"0.0.0.0/%s", netmask_string(nm, nml));
cp = notdefault;
}
}
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 (i &~ mask)
mask = (int32_t)mask >> subnetshift;
net = i & mask;
while ((mask & 1) == 0)
mask >>= 1, net >>= 1;
np = getnetbyaddr(net, AF_INET);
if (np)
cp = np->n_name;
}
if (cp)
(void)strlcpy(line, cp, sizeof(line));
else {
#if 0 /* XXX - This is silly... */
#define C(x) ((x) & 0xff)
if ((i & 0xffffff) == 0)
(void)snprintf(line, sizeof line, "%u",
C(i >> 24));
else if ((i & 0xffff) == 0)
(void)snprintf(line, sizeof line, "%u.%u",
C(i >> 24), C(i >> 16));
else if ((i & 0xff) == 0)
(void)snprintf(line, sizeof line, "%u.%u.%u",
C(i >> 24), C(i >> 16), C(i >> 8));
else
(void)snprintf(line, sizeof line, "%u.%u.%u.%u",
C(i >> 24), C(i >> 16), C(i >> 8), C(i));
#undef C
#else /* XXX */
if (nml == 0)
strlcpy(line, inet_ntoa(in), sizeof(line));
else
snprintf(line, sizeof(line), "%s/%d", inet_ntoa(in), nml);
#endif /* XXX */
}
break;
case AF_LINK:
return (link_ntoa((struct sockaddr_dl *)sa));
#ifndef SMALL
#ifdef INET6
case AF_INET6:
{
struct sockaddr_in6 sin6;
int niflags;
niflags = 0;
if (nflag)
niflags |= NI_NUMERICHOST;
memset(&sin6, 0, sizeof(sin6));
memcpy(&sin6, sa, sa->sa_len);
sin6.sin6_len = sizeof(struct sockaddr_in6);
sin6.sin6_family = AF_INET6;
#ifdef __KAME__
if (sa->sa_len == sizeof(struct sockaddr_in6) &&
(IN6_IS_ADDR_LINKLOCAL(&sin6.sin6_addr) ||
IN6_IS_ADDR_MC_LINKLOCAL(&sin6.sin6_addr)) &&
sin6.sin6_scope_id == 0) {
sin6.sin6_scope_id =
ntohs(*(u_int16_t *)&sin6.sin6_addr.s6_addr[2]);
sin6.sin6_addr.s6_addr[2] = 0;
sin6.sin6_addr.s6_addr[3] = 0;
}
#endif
nml = netmask_length(nm, AF_INET6);
if (IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr)) {
if (nml == 0)
strlcpy(line, "::", sizeof(line));
else
/* noncontiguous never happens in ipv6 */
snprintf(line, sizeof(line), "::/%d", nml);
}
else if (getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len,
line, sizeof(line), NULL, 0, niflags) != 0)
strlcpy(line, "invalid", sizeof(line));
break;
}
#endif
case AF_NS:
return (ns_print((struct sockaddr_ns *)sa));
case AF_ISO:
(void)snprintf(line, sizeof line, "iso %s",
iso_ntoa(&((struct sockaddr_iso *)sa)->siso_addr));
break;
case AF_APPLETALK:
(void) snprintf(line, sizeof(line), "atalk %d.%d",
((struct sockaddr_at *)sa)->sat_addr.s_net,
((struct sockaddr_at *)sa)->sat_addr.s_node);
break;
#endif /* SMALL */
default:
(void)snprintf(line, sizeof line, "af %d: %s",
sa->sa_family, any_ntoa(sa));
break;
}
return (line);
}
static void
set_metric(char *value, int key)
{
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);
}
static int
newroute(int argc, char **argv)
{
char *cmd, *dest = "", *gateway = "";
const char *error;
int ishost = 0, ret, attempts, oerrno, flags = RTF_STATIC;
int key;
struct hostent *hp = 0;
cmd = argv[0];
af = 0;
if (*cmd != 'g')
shutdown(sock, SHUT_RD); /* Don't want to read back our messages */
while (--argc > 0) {
if (**(++argv)== '-') {
switch (key = keyword(1 + *argv)) {
case K_SA:
af = PF_ROUTE;
aflen = sizeof(union sockunion);
break;
#ifndef SMALL
case K_ATALK:
af = AF_APPLETALK;
aflen = sizeof(struct sockaddr_at);
break;
#endif
case K_INET:
af = AF_INET;
aflen = sizeof(struct sockaddr_in);
break;
#ifdef INET6
case K_INET6:
af = AF_INET6;
aflen = sizeof(struct sockaddr_in6);
break;
#endif
case K_LINK:
af = AF_LINK;
aflen = sizeof(struct sockaddr_dl);
break;
#ifndef SMALL
case K_OSI:
case K_ISO:
af = AF_ISO;
aflen = sizeof(struct sockaddr_iso);
break;
case K_X25:
af = AF_CCITT;
aflen = sizeof(struct sockaddr_x25);
break;
case K_XNS:
af = AF_NS;
aflen = sizeof(struct sockaddr_ns);
break;
#endif /* SMALL */
case K_IFACE:
case K_INTERFACE:
iflag++;
break;
case K_NOSTATIC:
flags &= ~RTF_STATIC;
break;
case K_LLINFO:
flags |= RTF_LLINFO;
break;
case K_LOCK:
locking = 1;
break;
case K_LOCKREST:
lockrest = 1;
break;
case K_HOST:
forcehost++;
break;
case K_REJECT:
flags |= RTF_REJECT;
break;
case K_BLACKHOLE:
flags |= RTF_BLACKHOLE;
break;
case K_CLONED:
flags |= RTF_CLONED;
break;
case K_PROTO1:
flags |= RTF_PROTO1;
break;
case K_PROTO2:
flags |= RTF_PROTO2;
break;
case K_CLONING:
flags |= RTF_CLONING;
break;
case K_XRESOLVE:
flags |= RTF_XRESOLVE;
break;
case K_STATIC:
flags |= RTF_STATIC;
break;
case K_IFA:
if (!--argc)
usage(1+*argv);
(void) getaddr(RTA_IFA, *++argv, 0);
break;
case K_IFP:
if (!--argc)
usage(1+*argv);
(void) getaddr(RTA_IFP, *++argv, 0);
break;
case K_GENMASK:
if (!--argc)
usage(1+*argv);
(void) getaddr(RTA_GENMASK, *++argv, 0);
break;
case K_GATEWAY:
if (!--argc)
usage(1+*argv);
(void) getaddr(RTA_GATEWAY, *++argv, 0);
break;
case K_DST:
if (!--argc)
usage(1+*argv);
ishost = getaddr(RTA_DST, *++argv, &hp);
dest = *argv;
break;
case K_NETMASK:
if (!--argc)
usage(1+*argv);
(void) getaddr(RTA_NETMASK, *++argv, 0);
/* FALLTHROUGH */
case K_NET:
forcenet++;
break;
case K_PREFIXLEN:
if (!--argc)
usage(1+*argv);
ishost = prefixlen(*++argv);
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:
if (!--argc)
usage(1+*argv);
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 {
ret = atoi(*argv);
if (ret == 0) {
if (strcmp(*argv, "0") == 0) {
if (!qflag) {
warnx("%s, %s",
"old usage of trailing 0",
"assuming route to if");
}
} else
usage((char *)NULL);
iflag = 1;
continue;
} else if (ret > 0 && ret < 10) {
if (!qflag) {
warnx("%s, %s",
"old usage of trailing digit",
"assuming route via gateway");
}
iflag = 0;
continue;
}
(void) getaddr(RTA_NETMASK, *argv, 0);
}
}
}
if (forcehost && forcenet)
errx(1, "-host and -net conflict");
else if (forcehost)
ishost = 1;
else 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 ((ret = rtmsg(*cmd, flags)) == 0)
break;
if (errno != ENETUNREACH && errno != ESRCH)
break;
if (af == AF_INET && *gateway && hp && hp->h_addr_list[1]) {
hp->h_addr_list++;
memmove(&so_gate.sin.sin_addr, hp->h_addr_list[0],
hp->h_length);
} else
break;
}
if (*cmd == 'g')
return rv;
oerrno = errno;
if (!qflag) {
(void) printf("%s %s %s", cmd, ishost? "host" : "net", dest);
if (*gateway) {
(void) printf(": gateway %s", gateway);
if (attempts > 1 && ret == 0 && af == AF_INET)
(void) printf(" (%s)",
inet_ntoa(so_gate.sin.sin_addr));
}
if (ret == 0)
(void) printf("\n");
}
if (ret != 0) {
switch (oerrno) {
case ESRCH:
error = "not in table";
break;
case EBUSY:
error = "entry in use";
break;
case ENOBUFS:
error = "routing table overflow";
break;
default:
error = strerror(oerrno);
break;
}
(void) printf(": %s\n", error);
return 1;
}
return 0;
}
static void
inet_makenetandmask(u_int32_t net, struct sockaddr_in *isin)
{
u_int32_t addr, mask = 0;
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 < 192) {
addr = net << IN_CLASSA_NSHIFT;
mask = IN_CLASSB_NET;
} else if (net < 224) {
addr = net << IN_CLASSA_NSHIFT;
mask = IN_CLASSC_NET;
} else if (net < 256) {
addr = net << IN_CLASSA_NSHIFT;
mask = IN_CLASSD_NET;
} else if (net < 49152) { /* 192 * 256 */
addr = net << IN_CLASSB_NSHIFT;
mask = IN_CLASSB_NET;
} else if (net < 57344) { /* 224 * 256 */
addr = net << IN_CLASSB_NSHIFT;
mask = IN_CLASSC_NET;
} else if (net < 65536) {
addr = net << IN_CLASSB_NSHIFT;
mask = IN_CLASSB_NET;
} else if (net < 14680064L) { /* 224 * 65536 */
addr = net << IN_CLASSC_NSHIFT;
mask = IN_CLASSC_NET;
} else if (net < 16777216L) {
addr = net << IN_CLASSC_NSHIFT;
mask = IN_CLASSD_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;
}
isin->sin_addr.s_addr = htonl(addr);
isin = &so_mask.sin;
isin->sin_addr.s_addr = htonl(mask);
isin->sin_len = 0;
isin->sin_family = 0;
cp = (char *)(&isin->sin_addr + 1);
while (*--cp == 0 && cp > (char *)isin)
;
isin->sin_len = 1 + cp - (char *)isin;
}
#ifdef INET6
/*
* XXX the function may need more improvement...
*/
static int
inet6_makenetandmask(struct sockaddr_in6 *sin6)
{
char *plen;
struct in6_addr in6;
plen = NULL;
if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) &&
sin6->sin6_scope_id == 0) {
plen = "0";
} else if ((sin6->sin6_addr.s6_addr[0] & 0xe0) == 0x20) {
/* aggregatable global unicast - RFC2374 */
memset(&in6, 0, sizeof(in6));
if (!memcmp(&sin6->sin6_addr.s6_addr[8], &in6.s6_addr[8], 8))
plen = "64";
}
if (!plen || strcmp(plen, "128") == 0)
return 1;
else {
rtm_addrs |= RTA_NETMASK;
(void)prefixlen(plen);
return 0;
}
}
#endif
/*
* Interpret an argument as a network address of some kind,
* returning 1 if a host address, 0 if a network address.
*/
static int
getaddr(int which, char *s, struct hostent **hpp)
{
sup su;
struct hostent *hp;
struct netent *np;
u_int32_t val;
char *t;
int afamily; /* local copy of af so we can change it */
if (af == 0) {
af = AF_INET;
aflen = sizeof(struct sockaddr_in);
}
afamily = af;
rtm_addrs |= which;
switch (which) {
case RTA_DST:
su = &so_dst;
break;
case RTA_GATEWAY:
su = &so_gate;
break;
case RTA_NETMASK:
su = &so_mask;
break;
case RTA_GENMASK:
su = &so_genmask;
break;
case RTA_IFP:
su = &so_ifp;
afamily = AF_LINK;
break;
case RTA_IFA:
su = &so_ifa;
su->sa.sa_family = af;
break;
default:
su = NULL;
usage("Internal Error");
/*NOTREACHED*/
}
su->sa.sa_len = aflen;
su->sa.sa_family = afamily; /* cases that don't want it have left already */
if (strcmp(s, "default") == 0) {
switch (which) {
case RTA_DST:
forcenet++;
(void) getaddr(RTA_NETMASK, s, 0);
break;
case RTA_NETMASK:
case RTA_GENMASK:
su->sa.sa_len = 0;
}
return (0);
}
switch (afamily) {
#ifndef SMALL
#ifdef INET6
case AF_INET6:
{
struct addrinfo hints, *res;
char *slash = 0;
if (which == RTA_DST && (slash = (strrchr(s, '/'))) != 0)
*slash = '\0';
memset(&hints, 0, sizeof(hints));
hints.ai_family = afamily; /*AF_INET6*/
hints.ai_flags = AI_NUMERICHOST;
hints.ai_socktype = SOCK_DGRAM; /*dummy*/
if (getaddrinfo(s, "0", &hints, &res) != 0) {
hints.ai_flags = 0;
if (slash) {
*slash = '/';
slash = 0;
}
if (getaddrinfo(s, "0", &hints, &res) != 0) {
(void) fprintf(stderr, "%s: bad value\n", s);
exit(1);
}
}
if (slash)
*slash = '/';
if (sizeof(su->sin6) != res->ai_addrlen) {
(void) fprintf(stderr, "%s: bad value\n", s);
exit(1);
}
if (res->ai_next) {
(void) fprintf(stderr,
"%s: resolved to multiple values\n", s);
exit(1);
}
memcpy(&su->sin6, res->ai_addr, sizeof(su->sin6));
freeaddrinfo(res);
#ifdef __KAME__
if ((IN6_IS_ADDR_LINKLOCAL(&su->sin6.sin6_addr) ||
IN6_IS_ADDR_MC_LINKLOCAL(&su->sin6.sin6_addr)) &&
su->sin6.sin6_scope_id) {
*(u_int16_t *)&su->sin6.sin6_addr.s6_addr[2] =
htons(su->sin6.sin6_scope_id);
su->sin6.sin6_scope_id = 0;
}
#endif
if (hints.ai_flags == AI_NUMERICHOST) {
if (slash)
return (prefixlen(slash + 1));
if (which == RTA_DST)
return (inet6_makenetandmask(&su->sin6));
return (0);
} else
return (1);
}
#endif
case AF_NS:
if (which == RTA_DST) {
struct sockaddr_ns *sms = &(so_mask.sns);
memset(sms, 0, 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));
case AF_OSI:
su->siso.siso_addr = *iso_addr(s);
if (which == RTA_NETMASK || which == RTA_GENMASK) {
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);
case AF_CCITT:
ccitt_addr(s, &su->sx25);
return (which == RTA_DST ? x25_makemask() : 1);
#endif /* SMALL */
case PF_ROUTE:
su->sa.sa_len = sizeof(*su);
sockaddr(s, &su->sa);
return (1);
#ifndef SMALL
case AF_APPLETALK:
t = strchr (s, '.');
if (!t) {
badataddr:
errx(1, "bad address: %s", s);
}
val = atoi (s);
if (val > 65535)
goto badataddr;
su->sat.sat_addr.s_net = val;
val = atoi (t);
if (val > 256)
goto badataddr;
su->sat.sat_addr.s_node = val;
rtm_addrs |= RTA_NETMASK;
return(forcehost || su->sat.sat_addr.s_node != 0);
#endif
case AF_LINK:
link_addr(s, &su->sdl);
return (1);
case AF_INET:
default:
break;
}
if (hpp == NULL)
hpp = &hp;
*hpp = NULL;
if ((t = strchr(s, '/')) != NULL && which == RTA_DST) {
*t = '\0';
if ((val = inet_addr(s)) != INADDR_NONE) {
inet_makenetandmask(htonl(val), &su->sin);
return prefixlen(&t[1]);
}
*t = '/';
}
if (((val = inet_addr(s)) != INADDR_NONE) &&
(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);
goto netdone;
}
}
if ((val = inet_network(s)) != INADDR_NONE ||
((np = getnetbyname(s)) != NULL && (val = np->n_net) != 0)) {
netdone:
if (which == RTA_DST)
inet_makenetandmask(val, &su->sin);
return (0);
}
hp = gethostbyname(s);
if (hp) {
*hpp = hp;
su->sin.sin_family = hp->h_addrtype;
memmove(&su->sin.sin_addr, hp->h_addr, hp->h_length);
return (1);
}
errx(1, "bad value: %s", s);
}
int
prefixlen(s)
char *s;
{
int len = atoi(s), q, r;
int max;
switch (af) {
case AF_INET:
max = sizeof(struct in_addr) * 8;
break;
#ifdef INET6
case AF_INET6:
max = sizeof(struct in6_addr) * 8;
break;
#endif
default:
(void) fprintf(stderr,
"prefixlen is not supported with af %d\n", af);
exit(1);
}
rtm_addrs |= RTA_NETMASK;
if (len < -1 || len > max) {
(void) fprintf(stderr, "%s: bad value\n", s);
exit(1);
}
q = len >> 3;
r = len & 7;
switch (af) {
case AF_INET:
memset(&so_mask, 0, sizeof(so_mask));
so_mask.sin.sin_family = AF_INET;
so_mask.sin.sin_len = sizeof(struct sockaddr_in);
so_mask.sin.sin_addr.s_addr = htonl(0xffffffff << (32 - len));
break;
#ifdef INET6
case AF_INET6:
so_mask.sin6.sin6_family = AF_INET6;
so_mask.sin6.sin6_len = sizeof(struct sockaddr_in6);
memset((void *)&so_mask.sin6.sin6_addr, 0,
sizeof(so_mask.sin6.sin6_addr));
if (q > 0)
memset((void *)&so_mask.sin6.sin6_addr, 0xff, q);
if (r > 0)
*((u_char *)&so_mask.sin6.sin6_addr + q) =
(0xff00 >> r) & 0xff;
break;
#endif
}
return (len == max);
}
#ifndef SMALL
int
x25_makemask(void)
{
char *cp;
if ((rtm_addrs & RTA_NETMASK) == 0) {
rtm_addrs |= RTA_NETMASK;
for (cp = (char *)&so_mask.sx25.x25_net;
cp < &so_mask.sx25.x25_opts.op_flags; cp++)
*cp = -1;
so_mask.sx25.x25_len = (u_char)&(((sup)0)->sx25.x25_opts);
}
return 0;
}
char *
ns_print(struct sockaddr_ns *sns)
{
struct ns_addr work;
union { union ns_net net_e; u_int32_t int32_t_e; } net;
u_short port;
static char mybuf[50], cport[10], chost[25];
char *host = "";
char *p;
u_char *q;
work = sns->sns_addr;
port = ntohs(work.x_port);
work.x_port = 0;
net.net_e = work.x_net;
if (ns_nullhost(work) && net.int32_t_e == 0) {
if (!port)
return ("*.*");
(void)snprintf(mybuf, sizeof mybuf, "*.%XH", port);
return (mybuf);
}
if (memcmp(ns_bh, work.x_host.c_host, 6) == 0)
host = "any";
else if (memcmp(ns_nullh, work.x_host.c_host, 6) == 0)
host = "*";
else {
q = work.x_host.c_host;
(void)snprintf(chost, sizeof 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++)
/* void */;
host = p;
}
if (port)
(void)snprintf(cport, sizeof cport, ".%XH", htons(port));
else
*cport = 0;
(void)snprintf(mybuf, sizeof mybuf, "%XH.%s%s",
(u_int32_t)ntohl(net.int32_t_e), host, cport);
return (mybuf);
}
static void
interfaces(void)
{
size_t needed;
int mib[6];
char *buf, *lim, *next;
struct rt_msghdr *rtm;
mib[0] = CTL_NET;
mib[1] = PF_ROUTE;
mib[2] = 0; /* protocol */
mib[3] = 0; /* wildcard address family */
mib[4] = NET_RT_IFLIST;
mib[5] = 0; /* no flags */
if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0)
err(1, "route-sysctl-estimate");
if ((buf = malloc(needed)) == NULL)
err(1, "malloc");
if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0)
err(1, "actual retrieval of interface table");
lim = buf + needed;
for (next = buf; next < lim; next += rtm->rtm_msglen) {
rtm = (struct rt_msghdr *)next;
print_rtmsg(rtm, rtm->rtm_msglen);
}
}
static void
monitor(void)
{
int n;
char msg[2048];
verbose = 1;
if (debugonly) {
interfaces();
exit(0);
}
for(;;) {
time_t now;
n = read(sock, msg, 2048);
now = time(NULL);
(void) printf("got message of size %d on %s", n, ctime(&now));
print_rtmsg((struct rt_msghdr *)msg, n);
}
}
#endif /* SMALL */
struct {
struct rt_msghdr m_rtm;
char m_space[512];
} m_rtmsg;
static int
rtmsg(int cmd, int flags)
{
static int seq;
int rlen;
char *cp = m_rtmsg.m_space;
int l;
#define NEXTADDR(w, u) \
if (rtm_addrs & (w)) {\
l = ROUNDUP(u.sa.sa_len); memmove(cp, &(u), l); cp += l;\
if (verbose && ! shortoutput) sodump(&(u),"u");\
}
errno = 0;
memset(&m_rtmsg, 0, sizeof(m_rtmsg));
if (cmd == 'a')
cmd = RTM_ADD;
else if (cmd == 'c')
cmd = RTM_CHANGE;
else if (cmd == 'g') {
#ifdef SMALL
return (-1);
#else /* SMALL */
cmd = RTM_GET;
if (so_ifp.sa.sa_family == 0) {
so_ifp.sa.sa_family = AF_LINK;
so_ifp.sa.sa_len = sizeof(struct sockaddr_dl);
rtm_addrs |= RTA_IFP;
}
#endif /* SMALL */
} else
cmd = RTM_DELETE;
#define rtm m_rtmsg.m_rtm
rtm.rtm_type = cmd;
rtm.rtm_flags = flags;
rtm.rtm_version = RTM_VERSION;
rtm.rtm_seq = ++seq;
rtm.rtm_addrs = rtm_addrs;
rtm.rtm_rmx = rt_metrics;
rtm.rtm_inits = rtm_inits;
if (rtm_addrs & RTA_NETMASK)
mask_addr();
NEXTADDR(RTA_DST, so_dst);
NEXTADDR(RTA_GATEWAY, so_gate);
NEXTADDR(RTA_NETMASK, so_mask);
NEXTADDR(RTA_GENMASK, so_genmask);
NEXTADDR(RTA_IFP, so_ifp);
NEXTADDR(RTA_IFA, so_ifa);
rtm.rtm_msglen = l = cp - (char *)&m_rtmsg;
if (verbose && ! shortoutput)
print_rtmsg(&rtm, l);
if (debugonly)
return (0);
if ((rlen = write(sock, (char *)&m_rtmsg, l)) < 0) {
perror("writing to routing socket");
return (-1);
}
#ifndef SMALL
if (cmd == RTM_GET) {
do {
l = read(sock, (char *)&m_rtmsg, sizeof(m_rtmsg));
} while (l > 0 && (rtm.rtm_seq != seq || rtm.rtm_pid != pid));
if (l < 0)
err(1, "read from routing socket");
else
print_getmsg(&rtm, l);
}
#endif /* SMALL */
#undef rtm
return (0);
}
static void
mask_addr(void)
{
int olen = so_mask.sa.sa_len;
char *cp1 = olen + (char *)&so_mask, *cp2;
for (so_mask.sa.sa_len = 0; cp1 > (char *)&so_mask; )
if (*--cp1 != 0) {
so_mask.sa.sa_len = 1 + cp1 - (char *)&so_mask;
break;
}
if ((rtm_addrs & RTA_DST) == 0)
return;
switch (so_dst.sa.sa_family) {
case AF_INET:
#ifdef INET6
case AF_INET6:
#endif
#ifndef SMALL
case AF_APPLETALK:
case AF_NS:
case AF_CCITT:
#endif /* SMALL */
case 0:
return;
#ifndef SMALL
case AF_ISO:
olen = MIN(so_dst.siso.siso_nlen,
MAX(so_mask.sa.sa_len - 6, 0));
break;
#endif /* SMALL */
}
cp1 = so_mask.sa.sa_len + 1 + (char *)&so_dst;
cp2 = so_dst.sa.sa_len + 1 + (char *)&so_dst;
while (cp2 > cp1)
*--cp2 = 0;
cp2 = so_mask.sa.sa_len + 1 + (char *)&so_mask;
while (cp1 > so_dst.sa.sa_data)
*--cp1 &= *--cp2;
#ifndef SMALL
switch (so_dst.sa.sa_family) {
case AF_ISO:
so_dst.siso.siso_nlen = olen;
break;
}
#endif /* SMALL */
}
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",
"RTM_RESOLVE: Route created by cloning",
"RTM_NEWADDR: address being added to iface",
"RTM_DELADDR: address being removed from iface",
"RTM_OIFINFO: iface status change (pre-1.5)",
"RTM_IFINFO: iface status change",
"RTM_IFANNOUNCE: iface arrival/departure",
0,
};
char metricnames[] =
"\011pksent\010rttvar\7rtt\6ssthresh\5sendpipe\4recvpipe\3expire\2hopcount\1mtu";
char routeflags[] =
"\1UP\2GATEWAY\3HOST\4REJECT\5DYNAMIC\6MODIFIED\7DONE\010MASK_PRESENT\011CLONING\012XRESOLVE\013LLINFO\014STATIC\015BLACKHOLE\016CLONED\017PROTO2\020PROTO1";
char ifnetflags[] =
"\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5PTP\6NOTRAILERS\7RUNNING\010NOARP\011PPROMISC\012ALLMULTI\013OACTIVE\014SIMPLEX\015LINK0\016LINK1\017LINK2\020MULTICAST";
char addrnames[] =
"\1DST\2GATEWAY\3NETMASK\4GENMASK\5IFP\6IFA\7AUTHOR\010BRD";
#ifndef SMALL
static const char *
linkstate(struct if_msghdr *ifm)
{
static char buf[64];
switch (ifm->ifm_data.ifi_link_state) {
case LINK_STATE_UNKNOWN:
return "carrier: unknown";
case LINK_STATE_DOWN:
return "carrier: no carrier";
case LINK_STATE_UP:
return "carrier: active";
default:
(void)snprintf(buf, sizeof(buf), "carrier: 0x%x",
ifm->ifm_data.ifi_link_state);
return buf;
}
}
#endif /* SMALL */
static void
print_rtmsg(struct rt_msghdr *rtm, int msglen)
{
struct if_msghdr *ifm;
struct ifa_msghdr *ifam;
struct if_announcemsghdr *ifan;
if (verbose == 0)
return;
if (rtm->rtm_version != RTM_VERSION) {
(void) printf("routing message version %d not understood\n",
rtm->rtm_version);
return;
}
if (msgtypes[rtm->rtm_type])
(void)printf("%s: ", msgtypes[rtm->rtm_type]);
else
(void)printf("#%d: ", rtm->rtm_type);
(void)printf("len %d, ", rtm->rtm_msglen);
switch (rtm->rtm_type) {
case RTM_IFINFO:
ifm = (struct if_msghdr *)rtm;
(void) printf("if# %d, %s, flags:", ifm->ifm_index,
#ifdef SMALL
""
#else
linkstate(ifm)
#endif /* SMALL */
);
bprintf(stdout, ifm->ifm_flags, ifnetflags);
pmsg_addrs((char *)(ifm + 1), ifm->ifm_addrs);
break;
case RTM_NEWADDR:
case RTM_DELADDR:
ifam = (struct ifa_msghdr *)rtm;
(void) printf("metric %d, flags:", ifam->ifam_metric);
bprintf(stdout, ifam->ifam_flags, routeflags);
pmsg_addrs((char *)(ifam + 1), ifam->ifam_addrs);
break;
case RTM_IFANNOUNCE:
ifan = (struct if_announcemsghdr *)rtm;
(void) printf("if# %d, what: ", ifan->ifan_index);
switch (ifan->ifan_what) {
case IFAN_ARRIVAL:
printf("arrival");
break;
case IFAN_DEPARTURE:
printf("departure");
break;
default:
printf("#%d", ifan->ifan_what);
break;
}
printf("\n");
break;
default:
(void) printf("pid: %d, seq %d, errno %d, flags:",
rtm->rtm_pid, rtm->rtm_seq, rtm->rtm_errno);
bprintf(stdout, rtm->rtm_flags, routeflags);
pmsg_common(rtm);
}
}
#ifndef SMALL
static void
print_getmsg(struct rt_msghdr *rtm, int msglen)
{
struct sockaddr *dst = NULL, *gate = NULL, *mask = NULL, *ifa = NULL;
struct sockaddr_dl *ifp = NULL;
struct sockaddr *sa;
char *cp;
int i;
if (! shortoutput)
(void) printf(" route to: %s\n",
routename((struct sockaddr *) &so_dst, NULL, RTF_HOST));
if (rtm->rtm_version != RTM_VERSION) {
warnx("routing message version %d not understood",
rtm->rtm_version);
return;
}
if (rtm->rtm_msglen > msglen) {
warnx("message length mismatch, in packet %d, returned %d",
rtm->rtm_msglen, msglen);
}
if (rtm->rtm_errno) {
warn("RTM_GET");
return;
}
cp = ((char *)(rtm + 1));
if (rtm->rtm_addrs)
for (i = 1; i; i <<= 1)
if (i & rtm->rtm_addrs) {
sa = (struct sockaddr *)cp;
switch (i) {
case RTA_DST:
dst = sa;
break;
case RTA_GATEWAY:
gate = sa;
break;
case RTA_NETMASK:
mask = sa;
break;
case RTA_IFP:
if (sa->sa_family == AF_LINK &&
((struct sockaddr_dl *)sa)->sdl_nlen)
ifp = (struct sockaddr_dl *)sa;
break;
case RTA_IFA:
ifa = sa;
break;
}
ADVANCE(cp, sa);
}
if (dst && mask)
mask->sa_family = dst->sa_family; /* XXX */
if (dst && ! shortoutput)
(void)printf("destination: %s\n",
routename(dst, mask, RTF_HOST));
if (mask && ! shortoutput) {
int savenflag = nflag;
nflag = 1;
(void)printf(" mask: %s\n",
routename(mask, NULL, RTF_HOST));
nflag = savenflag;
}
if (gate && rtm->rtm_flags & RTF_GATEWAY && ! shortoutput)
(void)printf(" gateway: %s\n",
routename(gate, NULL, RTF_HOST));
if (ifa && ! shortoutput)
(void)printf(" local addr: %s\n",
routename(ifa, NULL, RTF_HOST));
if (ifp && ! shortoutput)
(void)printf(" interface: %.*s\n",
ifp->sdl_nlen, ifp->sdl_data);
if (! shortoutput) {
(void)printf(" flags: ");
bprintf(stdout, rtm->rtm_flags, routeflags);
}
#define lock(f) ((rtm->rtm_rmx.rmx_locks & __CONCAT(RTV_,f)) ? 'L' : ' ')
#define msec(u) (((u) + 500) / 1000) /* usec to msec */
if (! shortoutput) {
(void) printf("\n%s\n", "\
recvpipe sendpipe ssthresh rtt,msec rttvar hopcount mtu expire");
printf("%8ld%c ", rtm->rtm_rmx.rmx_recvpipe, lock(RPIPE));
printf("%8ld%c ", rtm->rtm_rmx.rmx_sendpipe, lock(SPIPE));
printf("%8ld%c ", rtm->rtm_rmx.rmx_ssthresh, lock(SSTHRESH));
printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rtt), lock(RTT));
printf("%8ld%c ", msec(rtm->rtm_rmx.rmx_rttvar), lock(RTTVAR));
printf("%8ld%c ", rtm->rtm_rmx.rmx_hopcount, lock(HOPCOUNT));
printf("%8ld%c ", rtm->rtm_rmx.rmx_mtu, lock(MTU));
if (rtm->rtm_rmx.rmx_expire)
rtm->rtm_rmx.rmx_expire -= time(0);
printf("%8ld%c\n", rtm->rtm_rmx.rmx_expire, lock(EXPIRE));
}
#undef lock
#undef msec
#define RTA_IGN (RTA_DST|RTA_GATEWAY|RTA_NETMASK|RTA_IFP|RTA_IFA|RTA_BRD)
if ((rtm->rtm_addrs & RTF_GATEWAY) == 0)
rv = 1;
else {
char *name;
int addrs;
cp = (char *)(rtm + 1);
addrs = rtm->rtm_addrs;
for (i = 1; i; i <<= 1) {
sa = (struct sockaddr *)cp;
if (i == RTF_GATEWAY) {
name = routename(sa, NULL, RTF_HOST);
if (name[0] == '\0')
rv = 1;
else if (shortoutput)
printf("%s\n", name);
}
if (i & addrs)
ADVANCE(cp, sa);
}
}
if (shortoutput)
return;
else if (verbose)
pmsg_common(rtm);
else if (rtm->rtm_addrs &~ RTA_IGN) {
(void) printf("sockaddrs: ");
bprintf(stdout, rtm->rtm_addrs, addrnames);
putchar('\n');
}
#undef RTA_IGN
}
#endif /* SMALL */
void
pmsg_common(struct rt_msghdr *rtm)
{
(void) printf("\nlocks: ");
bprintf(stdout, rtm->rtm_rmx.rmx_locks, metricnames);
(void) printf(" inits: ");
bprintf(stdout, rtm->rtm_inits, metricnames);
pmsg_addrs(((char *)(rtm + 1)), rtm->rtm_addrs);
}
static void
pmsg_addrs(char *cp, int addrs)
{
struct sockaddr *sa;
int i;
if (addrs != 0) {
(void) printf("\nsockaddrs: ");
bprintf(stdout, addrs, addrnames);
(void) putchar('\n');
for (i = 1; i; i <<= 1)
if (i & addrs) {
sa = (struct sockaddr *)cp;
(void) printf(" %s",
routename(sa, NULL, RTF_HOST));
ADVANCE(cp, sa);
}
}
(void) putchar('\n');
(void) fflush(stdout);
}
static void
bprintf(FILE *fp, int b, u_char *s)
{
int i;
int gotsome = 0;
if (b == 0)
return;
while ((i = *s++) != 0) {
if (b & (1 << (i-1))) {
if (gotsome == 0)
i = '<';
else
i = ',';
(void) putc(i, fp);
gotsome = 1;
for (; (i = *s) > 32; s++)
(void) putc(i, fp);
} else
while (*s > 32)
s++;
}
if (gotsome)
(void) putc('>', fp);
}
static int
keyword(char *cp)
{
struct keytab *kt = keywords;
while (kt->kt_cp && strcmp(kt->kt_cp, cp))
kt++;
return kt->kt_i;
}
static void
sodump(sup su, char *which)
{
#ifdef INET6
char ntop_buf[NI_MAXHOST];
#endif
switch (su->sa.sa_family) {
case AF_INET:
(void) printf("%s: inet %s; ",
which, inet_ntoa(su->sin.sin_addr));
break;
#ifndef SMALL
case AF_APPLETALK:
(void) printf("%s: atalk %d.%d; ",
which, su->sat.sat_addr.s_net, su->sat.sat_addr.s_node);
break;
#endif
case AF_LINK:
(void) printf("%s: link %s; ",
which, link_ntoa(&su->sdl));
break;
#ifndef SMALL
#ifdef INET6
case AF_INET6:
(void) printf("%s: inet6 %s; ",
which, inet_ntop(AF_INET6, &su->sin6.sin6_addr,
ntop_buf, sizeof(ntop_buf)));
break;
#endif
case AF_ISO:
(void) printf("%s: iso %s; ",
which, iso_ntoa(&su->siso.siso_addr));
break;
case AF_NS:
(void) printf("%s: xns %s; ",
which, ns_ntoa(su->sns.sns_addr));
break;
#endif /* SMALL */
default:
(void) printf("af %p: %s; ",
which, any_ntoa(&su->sa));
}
(void) fflush(stdout);
}
/* States*/
#define VIRGIN 0
#define GOTONE 1
#define GOTTWO 2
/* Inputs */
#define DIGIT (4*0)
#define END (4*1)
#define DELIM (4*2)
static void
sockaddr(char *addr, struct sockaddr *sa)
{
char *cp = (char *)sa;
int size = sa->sa_len;
char *cplim = cp + size;
int byte = 0, state = VIRGIN, new = 0;
(void) memset(cp, 0, size);
cp++;
do {
if ((*addr >= '0') && (*addr <= '9')) {
new = *addr - '0';
} else if ((*addr >= 'a') && (*addr <= 'f')) {
new = *addr - 'a' + 10;
} else if ((*addr >= 'A') && (*addr <= 'F')) {
new = *addr - 'A' + 10;
} else if (*addr == 0)
state |= END;
else
state |= DELIM;
addr++;
switch (state /* | INPUT */) {
case GOTTWO | DIGIT:
*cp++ = byte; /*FALLTHROUGH*/
case VIRGIN | DIGIT:
state = GOTONE; byte = new; continue;
case GOTONE | DIGIT:
state = GOTTWO; byte = new + (byte << 4); continue;
default: /* | DELIM */
state = VIRGIN; *cp++ = byte; byte = 0; continue;
case GOTONE | END:
case GOTTWO | END:
*cp++ = byte; /* FALLTHROUGH */
case VIRGIN | END:
break;
}
break;
} while (cp < cplim);
sa->sa_len = cp - (char *)sa;
}
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