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freebsd-dev/usr.bin/netstat/route.c
Ruslan Ermilov 146db49f97 Fixed bugs from revision 1.27. Specifically: 
- Restore the ability to look up network names in the networks(5)
  database by passing getnetbyaddr(3) shifted network numbers,
  but without duplicating the old bug that was fixed in 1.27 (we
  now only shift netnums with standard netmasks).  For example:

Before:

$ netstat -r
[...]
127.0.1/24         localhost          UGSc        0        0    lo0
127.0.2/24         localhost          UGSc        0        0    lo0

After:

$ netstat -r
[...]
subnet1/24         localhost          UGSc        0        0    lo0
subnet2/24         localhost          UGSc        0        0    lo0

- Only try to lookup with the forged netmask if the mask was not
  explicitly specified, like it was before 1.27.  For example:

Before:

$ netstat -r
net-44.ampr.org/25 localhost          UGSc        0        0    lo0
net-44.ampr.org/25 localhost          UGSc        0        0    lo0

After:

44.108.2/25        localhost          UGSc        0        0    lo0
44.108.2.128/25    localhost          UGSc        0        0    lo0

- Make sure to null-terminate the resulting string.

MFC after:	1 week
2001-10-11 14:30:42 +00:00

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/*
* Copyright (c) 1983, 1988, 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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.
*/
#ifndef lint
#if 0
static char sccsid[] = "From: @(#)route.c 8.6 (Berkeley) 4/28/95";
#endif
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
#include <sys/param.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/if_dl.h>
#include <net/if_types.h>
#include <net/route.h>
#include <netinet/in.h>
#include <netipx/ipx.h>
#include <netatalk/at.h>
#include <netgraph/ng_socket.h>
#ifdef NS
#include <netns/ns.h>
#endif
#include <sys/sysctl.h>
#include <arpa/inet.h>
#include <libutil.h>
#include <netdb.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <err.h>
#include <time.h>
#include "netstat.h"
#define kget(p, d) (kread((u_long)(p), (char *)&(d), sizeof (d)))
/* alignment constraint for routing socket */
#define ROUNDUP(a) \
((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long))
#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len))
/*
* Definitions for showing gateway flags.
*/
struct bits {
u_long b_mask;
char b_val;
} bits[] = {
{ RTF_UP, 'U' },
{ RTF_GATEWAY, 'G' },
{ RTF_HOST, 'H' },
{ RTF_REJECT, 'R' },
{ RTF_DYNAMIC, 'D' },
{ RTF_MODIFIED, 'M' },
{ RTF_DONE, 'd' }, /* Completed -- for routing messages only */
{ RTF_CLONING, 'C' },
{ RTF_XRESOLVE, 'X' },
{ RTF_LLINFO, 'L' },
{ RTF_STATIC, 'S' },
{ RTF_PROTO1, '1' },
{ RTF_PROTO2, '2' },
{ RTF_WASCLONED,'W' },
{ RTF_PRCLONING,'c' },
{ RTF_PROTO3, '3' },
{ RTF_BLACKHOLE,'B' },
{ RTF_BROADCAST,'b' },
{ 0 }
};
typedef union {
long dummy; /* Helps align structure. */
struct sockaddr u_sa;
u_short u_data[128];
} sa_u;
static sa_u pt_u;
int do_rtent = 0;
struct rtentry rtentry;
struct radix_node rnode;
struct radix_mask rmask;
struct radix_node_head *rt_tables[AF_MAX+1];
int NewTree = 0;
static struct sockaddr *kgetsa (struct sockaddr *);
static void p_tree (struct radix_node *);
static void p_rtnode (void);
static void ntreestuff (void);
static void np_rtentry (struct rt_msghdr *);
static void p_sockaddr (struct sockaddr *, struct sockaddr *, int, int);
static void p_flags (int, char *);
static void p_rtentry (struct rtentry *);
static u_long forgemask (u_long);
static void domask (char *, u_long, u_long);
/*
* Print routing tables.
*/
void
routepr(u_long rtree)
{
struct radix_node_head *rnh, head;
int i;
printf("Routing tables\n");
if (Aflag == 0 && NewTree)
ntreestuff();
else {
if (rtree == 0) {
printf("rt_tables: symbol not in namelist\n");
return;
}
kget(rtree, rt_tables);
for (i = 0; i <= AF_MAX; i++) {
if ((rnh = rt_tables[i]) == 0)
continue;
kget(rnh, head);
if (i == AF_UNSPEC) {
if (Aflag && af == 0) {
printf("Netmasks:\n");
p_tree(head.rnh_treetop);
}
} else if (af == AF_UNSPEC || af == i) {
pr_family(i);
do_rtent = 1;
pr_rthdr(i);
p_tree(head.rnh_treetop);
}
}
}
}
/*
* Print address family header before a section of the routing table.
*/
void
pr_family(int af)
{
char *afname;
switch (af) {
case AF_INET:
afname = "Internet";
break;
#ifdef INET6
case AF_INET6:
afname = "Internet6";
break;
#endif /*INET6*/
case AF_IPX:
afname = "IPX";
break;
#ifdef NS
case AF_NS:
afname = "XNS";
break;
#endif
case AF_ISO:
afname = "ISO";
break;
case AF_APPLETALK:
afname = "AppleTalk";
break;
case AF_CCITT:
afname = "X.25";
break;
case AF_NETGRAPH:
afname = "Netgraph";
break;
default:
afname = NULL;
break;
}
if (afname)
printf("\n%s:\n", afname);
else
printf("\nProtocol Family %d:\n", af);
}
/* column widths; each followed by one space */
#ifndef INET6
#define WID_DST(af) 18 /* width of destination column */
#define WID_GW(af) 18 /* width of gateway column */
#define WID_IF(af) 6 /* width of netif column */
#else
#define WID_DST(af) \
((af) == AF_INET6 ? (Wflag ? 39 : (numeric_addr ? 33: 18)) : 18)
#define WID_GW(af) \
((af) == AF_INET6 ? (Wflag ? 31 : (numeric_addr ? 29 : 18)) : 18)
#define WID_IF(af) ((af) == AF_INET6 ? 8 : 6)
#endif /*INET6*/
/*
* Print header for routing table columns.
*/
void
pr_rthdr(int af)
{
if (Aflag)
printf("%-8.8s ","Address");
if (af == AF_INET || Wflag)
if (Wflag)
printf("%-*.*s %-*.*s %-6.6s %6.6s %8.8s %6.6s %*.*s %6s\n",
WID_DST(af), WID_DST(af), "Destination",
WID_GW(af), WID_GW(af), "Gateway",
"Flags", "Refs", "Use", "Mtu",
WID_IF(af), WID_IF(af), "Netif", "Expire");
else
printf("%-*.*s %-*.*s %-6.6s %6.6s %8.8s %*.*s %6s\n",
WID_DST(af), WID_DST(af), "Destination",
WID_GW(af), WID_GW(af), "Gateway",
"Flags", "Refs", "Use",
WID_IF(af), WID_IF(af), "Netif", "Expire");
else
printf("%-*.*s %-*.*s %-6.6s %8.8s %6s\n",
WID_DST(af), WID_DST(af), "Destination",
WID_GW(af), WID_GW(af), "Gateway",
"Flags", "Netif", "Expire");
}
static struct sockaddr *
kgetsa(struct sockaddr *dst)
{
kget(dst, pt_u.u_sa);
if (pt_u.u_sa.sa_len > sizeof (pt_u.u_sa))
kread((u_long)dst, (char *)pt_u.u_data, pt_u.u_sa.sa_len);
return (&pt_u.u_sa);
}
static void
p_tree(struct radix_node *rn)
{
again:
kget(rn, rnode);
if (rnode.rn_bit < 0) {
if (Aflag)
printf("%-8.8lx ", (u_long)rn);
if (rnode.rn_flags & RNF_ROOT) {
if (Aflag)
printf("(root node)%s",
rnode.rn_dupedkey ? " =>\n" : "\n");
} else if (do_rtent) {
kget(rn, rtentry);
p_rtentry(&rtentry);
if (Aflag)
p_rtnode();
} else {
p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_key),
NULL, 0, 44);
putchar('\n');
}
if ((rn = rnode.rn_dupedkey))
goto again;
} else {
if (Aflag && do_rtent) {
printf("%-8.8lx ", (u_long)rn);
p_rtnode();
}
rn = rnode.rn_right;
p_tree(rnode.rn_left);
p_tree(rn);
}
}
char nbuf[20];
static void
p_rtnode(void)
{
struct radix_mask *rm = rnode.rn_mklist;
if (rnode.rn_bit < 0) {
if (rnode.rn_mask) {
printf("\t mask ");
p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_mask),
NULL, 0, -1);
} else if (rm == 0)
return;
} else {
sprintf(nbuf, "(%d)", rnode.rn_bit);
printf("%6.6s %8.8lx : %8.8lx", nbuf, (u_long)rnode.rn_left, (u_long)rnode.rn_right);
}
while (rm) {
kget(rm, rmask);
sprintf(nbuf, " %d refs, ", rmask.rm_refs);
printf(" mk = %8.8lx {(%d),%s",
(u_long)rm, -1 - rmask.rm_bit, rmask.rm_refs ? nbuf : " ");
if (rmask.rm_flags & RNF_NORMAL) {
struct radix_node rnode_aux;
printf(" <normal>, ");
kget(rmask.rm_leaf, rnode_aux);
p_sockaddr(kgetsa((struct sockaddr *)rnode_aux.rn_mask),
NULL, 0, -1);
} else
p_sockaddr(kgetsa((struct sockaddr *)rmask.rm_mask),
NULL, 0, -1);
putchar('}');
if ((rm = rmask.rm_mklist))
printf(" ->");
}
putchar('\n');
}
static void
ntreestuff(void)
{
size_t needed;
int mib[6];
char *buf, *next, *lim;
register struct rt_msghdr *rtm;
mib[0] = CTL_NET;
mib[1] = PF_ROUTE;
mib[2] = 0;
mib[3] = 0;
mib[4] = NET_RT_DUMP;
mib[5] = 0;
if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) {
err(1, "sysctl: net.route.0.0.dump estimate");
}
if ((buf = malloc(needed)) == 0) {
err(2, "malloc(%lu)", (unsigned long)needed);
}
if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) {
err(1, "sysctl: net.route.0.0.dump");
}
lim = buf + needed;
for (next = buf; next < lim; next += rtm->rtm_msglen) {
rtm = (struct rt_msghdr *)next;
np_rtentry(rtm);
}
}
static void
np_rtentry(struct rt_msghdr *rtm)
{
register struct sockaddr *sa = (struct sockaddr *)(rtm + 1);
#ifdef notdef
static int masks_done, banner_printed;
#endif
static int old_af;
int af = 0, interesting = RTF_UP | RTF_GATEWAY | RTF_HOST;
#ifdef notdef
/* for the moment, netmasks are skipped over */
if (!banner_printed) {
printf("Netmasks:\n");
banner_printed = 1;
}
if (masks_done == 0) {
if (rtm->rtm_addrs != RTA_DST ) {
masks_done = 1;
af = sa->sa_family;
}
} else
#endif
af = sa->sa_family;
if (af != old_af) {
pr_family(af);
old_af = af;
}
if (rtm->rtm_addrs == RTA_DST)
p_sockaddr(sa, NULL, 0, 36);
else {
p_sockaddr(sa, NULL, rtm->rtm_flags, 16);
sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + (char *)sa);
p_sockaddr(sa, NULL, 0, 18);
}
p_flags(rtm->rtm_flags & interesting, "%-6.6s ");
putchar('\n');
}
static void
p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width)
{
char workbuf[128], *cplim;
register char *cp = workbuf;
switch(sa->sa_family) {
case AF_INET:
{
register struct sockaddr_in *sin = (struct sockaddr_in *)sa;
if ((sin->sin_addr.s_addr == INADDR_ANY) &&
mask &&
ntohl(((struct sockaddr_in *)mask)->sin_addr.s_addr)
==0L)
cp = "default" ;
else if (flags & RTF_HOST)
cp = routename(sin->sin_addr.s_addr);
else if (mask)
cp = netname(sin->sin_addr.s_addr,
ntohl(((struct sockaddr_in *)mask)
->sin_addr.s_addr));
else
cp = netname(sin->sin_addr.s_addr, 0L);
break;
}
#ifdef INET6
case AF_INET6:
{
struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa;
struct in6_addr *in6 = &sa6->sin6_addr;
/*
* XXX: This is a special workaround for KAME kernels.
* sin6_scope_id field of SA should be set in the future.
*/
if (IN6_IS_ADDR_LINKLOCAL(in6) ||
IN6_IS_ADDR_MC_LINKLOCAL(in6)) {
/* XXX: override is ok? */
sa6->sin6_scope_id = (u_int32_t)ntohs(*(u_short *)&in6->s6_addr[2]);
*(u_short *)&in6->s6_addr[2] = 0;
}
if (flags & RTF_HOST)
cp = routename6(sa6);
else if (mask)
cp = netname6(sa6,
&((struct sockaddr_in6 *)mask)->sin6_addr);
else {
cp = netname6(sa6, NULL);
}
break;
}
#endif /*INET6*/
case AF_IPX:
{
struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr;
if (ipx_nullnet(satoipx_addr(work)))
cp = "default";
else
cp = ipx_print(sa);
break;
}
case AF_APPLETALK:
{
if (!(flags & RTF_HOST) && mask)
cp = atalk_print2(sa,mask,9);
else
cp = atalk_print(sa,11);
break;
}
case AF_NETGRAPH:
{
printf("%s", ((struct sockaddr_ng *)sa)->sg_data);
break;
}
#ifdef NS
case AF_NS:
cp = ns_print(sa);
break;
#endif
case AF_LINK:
{
register struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa;
if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 &&
sdl->sdl_slen == 0)
(void) sprintf(workbuf, "link#%d", sdl->sdl_index);
else
switch (sdl->sdl_type) {
case IFT_ETHER:
{
register int i;
register u_char *lla = (u_char *)sdl->sdl_data +
sdl->sdl_nlen;
cplim = "";
for (i = 0; i < sdl->sdl_alen; i++, lla++) {
cp += sprintf(cp, "%s%x", cplim, *lla);
cplim = ":";
}
cp = workbuf;
break;
}
default:
cp = link_ntoa(sdl);
break;
}
break;
}
default:
{
register u_char *s = (u_char *)sa->sa_data, *slim;
slim = sa->sa_len + (u_char *) sa;
cplim = cp + sizeof(workbuf) - 6;
cp += sprintf(cp, "(%d)", sa->sa_family);
while (s < slim && cp < cplim) {
cp += sprintf(cp, " %02x", *s++);
if (s < slim)
cp += sprintf(cp, "%02x", *s++);
}
cp = workbuf;
}
}
if (width < 0 )
printf("%s ", cp);
else {
if (numeric_addr)
printf("%-*s ", width, cp);
else
printf("%-*.*s ", width, width, cp);
}
}
static void
p_flags(int f, char *format)
{
char name[33], *flags;
register struct bits *p = bits;
for (flags = name; p->b_mask; p++)
if (p->b_mask & f)
*flags++ = p->b_val;
*flags = '\0';
printf(format, name);
}
static void
p_rtentry(struct rtentry *rt)
{
static struct ifnet ifnet, *lastif;
struct rtentry parent;
static char name[16];
static char prettyname[9];
struct sockaddr *sa;
sa_u addr, mask;
/*
* Don't print protocol-cloned routes unless -a.
*/
if (rt->rt_flags & RTF_WASCLONED && !aflag) {
kget(rt->rt_parent, parent);
if (parent.rt_flags & RTF_PRCLONING)
return;
}
bzero(&addr, sizeof(addr));
if ((sa = kgetsa(rt_key(rt))))
bcopy(sa, &addr, sa->sa_len);
bzero(&mask, sizeof(mask));
if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt))))
bcopy(sa, &mask, sa->sa_len);
p_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags,
WID_DST(addr.u_sa.sa_family));
p_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST,
WID_GW(addr.u_sa.sa_family));
p_flags(rt->rt_flags, "%-6.6s ");
if (addr.u_sa.sa_family == AF_INET || Wflag) {
printf("%6ld %8ld ", rt->rt_refcnt, rt->rt_use);
if (Wflag) {
if (rt->rt_rmx.rmx_mtu != 0)
printf("%6lu ", rt->rt_rmx.rmx_mtu);
else
printf("%6s ", "");
}
}
if (rt->rt_ifp) {
if (rt->rt_ifp != lastif) {
kget(rt->rt_ifp, ifnet);
kread((u_long)ifnet.if_name, name, 16);
lastif = rt->rt_ifp;
snprintf(prettyname, sizeof prettyname,
"%s%d", name, ifnet.if_unit);
}
printf("%*.*s", WID_IF(addr.u_sa.sa_family),
WID_IF(addr.u_sa.sa_family), prettyname);
if (rt->rt_rmx.rmx_expire) {
time_t expire_time;
if ((expire_time =
rt->rt_rmx.rmx_expire - time((time_t *)0)) > 0)
printf(" %6d", (int)expire_time);
}
if (rt->rt_nodes[0].rn_dupedkey)
printf(" =>");
}
putchar('\n');
}
char *
routename(u_long in)
{
register char *cp;
static char line[MAXHOSTNAMELEN];
struct hostent *hp;
cp = 0;
if (!numeric_addr) {
hp = gethostbyaddr((char *)&in, sizeof (struct in_addr),
AF_INET);
if (hp) {
cp = hp->h_name;
trimdomain(cp, strlen(cp));
}
}
if (cp) {
strncpy(line, cp, sizeof(line) - 1);
line[sizeof(line) - 1] = '\0';
} else {
#define C(x) ((x) & 0xff)
in = ntohl(in);
sprintf(line, "%lu.%lu.%lu.%lu",
C(in >> 24), C(in >> 16), C(in >> 8), C(in));
}
return (line);
}
static u_long
forgemask(u_long a)
{
u_long m;
if (IN_CLASSA(a))
m = IN_CLASSA_NET;
else if (IN_CLASSB(a))
m = IN_CLASSB_NET;
else
m = IN_CLASSC_NET;
return (m);
}
static void
domask(char *dst, u_long addr, u_long mask)
{
register int b, i;
if (!mask || (forgemask(addr) == mask)) {
*dst = '\0';
return;
}
i = 0;
for (b = 0; b < 32; b++)
if (mask & (1 << b)) {
register int bb;
i = b;
for (bb = b+1; bb < 32; bb++)
if (!(mask & (1 << bb))) {
i = -1; /* noncontig */
break;
}
break;
}
if (i == -1)
sprintf(dst, "&0x%lx", mask);
else
sprintf(dst, "/%d", 32-i);
}
/*
* 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(u_long in, u_long mask)
{
char *cp = 0;
static char line[MAXHOSTNAMELEN];
struct netent *np = 0;
u_long dmask;
register u_long i;
#define NSHIFT(m) ( \
(m) == IN_CLASSA_NET ? IN_CLASSA_NSHIFT : \
(m) == IN_CLASSB_NET ? IN_CLASSB_NSHIFT : \
(m) == IN_CLASSC_NET ? IN_CLASSC_NSHIFT : \
0)
i = ntohl(in);
dmask = forgemask(i);
if (!numeric_addr && i) {
np = getnetbyaddr(i >> NSHIFT(mask), AF_INET);
if (np == NULL && mask == 0)
np = getnetbyaddr(i >> NSHIFT(dmask), AF_INET);
if (np != NULL) {
cp = np->n_name;
trimdomain(cp, strlen(cp));
}
}
#undef NSHIFT
if (cp != NULL) {
strncpy(line, cp, sizeof(line) - 1);
line[sizeof(line) - 1] = '\0';
} else {
switch (dmask) {
case IN_CLASSA_NET:
if ((i & IN_CLASSA_HOST) == 0) {
sprintf(line, "%lu", C(i >> 24));
break;
}
/* FALLTHROUGH */
case IN_CLASSB_NET:
if ((i & IN_CLASSB_HOST) == 0) {
sprintf(line, "%lu.%lu",
C(i >> 24), C(i >> 16));
break;
}
/* FALLTHROUGH */
case IN_CLASSC_NET:
if ((i & IN_CLASSC_HOST) == 0) {
sprintf(line, "%lu.%lu.%lu",
C(i >> 24), C(i >> 16), C(i >> 8));
break;
}
/* FALLTHROUGH */
default:
sprintf(line, "%lu.%lu.%lu.%lu",
C(i >> 24), C(i >> 16), C(i >> 8), C(i));
break;
}
}
domask(line + strlen(line), i, mask);
return (line);
}
#ifdef INET6
char *
netname6(struct sockaddr_in6 *sa6, struct in6_addr *mask)
{
static char line[MAXHOSTNAMELEN];
u_char *p = (u_char *)mask;
u_char *lim;
int masklen, illegal = 0, flag = NI_WITHSCOPEID;
if (mask) {
for (masklen = 0, lim = p + 16; p < lim; p++) {
switch (*p) {
case 0xff:
masklen += 8;
break;
case 0xfe:
masklen += 7;
break;
case 0xfc:
masklen += 6;
break;
case 0xf8:
masklen += 5;
break;
case 0xf0:
masklen += 4;
break;
case 0xe0:
masklen += 3;
break;
case 0xc0:
masklen += 2;
break;
case 0x80:
masklen += 1;
break;
case 0x00:
break;
default:
illegal ++;
break;
}
}
if (illegal)
fprintf(stderr, "illegal prefixlen\n");
}
else
masklen = 128;
if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr))
return("default");
if (numeric_addr)
flag |= NI_NUMERICHOST;
getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, sizeof(line),
NULL, 0, flag);
if (numeric_addr)
sprintf(&line[strlen(line)], "/%d", masklen);
return line;
}
char *
routename6(struct sockaddr_in6 *sa6)
{
static char line[MAXHOSTNAMELEN];
int flag = NI_WITHSCOPEID;
/* use local variable for safety */
struct sockaddr_in6 sa6_local = {AF_INET6, sizeof(sa6_local),};
sa6_local.sin6_addr = sa6->sin6_addr;
sa6_local.sin6_scope_id = sa6->sin6_scope_id;
if (numeric_addr)
flag |= NI_NUMERICHOST;
getnameinfo((struct sockaddr *)&sa6_local, sa6_local.sin6_len,
line, sizeof(line), NULL, 0, flag);
return line;
}
#endif /*INET6*/
/*
* Print routing statistics
*/
void
rt_stats(u_long rtsaddr, u_long rttaddr)
{
struct rtstat rtstat;
int rttrash;
if (rtsaddr == 0) {
printf("rtstat: symbol not in namelist\n");
return;
}
if (rttaddr == 0) {
printf("rttrash: symbol not in namelist\n");
return;
}
kread(rtsaddr, (char *)&rtstat, sizeof (rtstat));
kread(rttaddr, (char *)&rttrash, sizeof (rttrash));
printf("routing:\n");
#define p(f, m) if (rtstat.f || sflag <= 1) \
printf(m, rtstat.f, plural(rtstat.f))
p(rts_badredirect, "\t%u bad routing redirect%s\n");
p(rts_dynamic, "\t%u dynamically created route%s\n");
p(rts_newgateway, "\t%u new gateway%s due to redirects\n");
p(rts_unreach, "\t%u destination%s found unreachable\n");
p(rts_wildcard, "\t%u use%s of a wildcard route\n");
#undef p
if (rttrash || sflag <= 1)
printf("\t%u route%s not in table but not freed\n",
rttrash, plural(rttrash));
}
char *
ipx_print(struct sockaddr *sa)
{
u_short port;
struct servent *sp = 0;
char *net = "", *host = "";
register char *p;
register u_char *q;
struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr;
static char mybuf[50];
char cport[10], chost[15], cnet[15];
port = ntohs(work.x_port);
if (ipx_nullnet(work) && ipx_nullhost(work)) {
if (port) {
if (sp)
sprintf(mybuf, "*.%s", sp->s_name);
else
sprintf(mybuf, "*.%x", port);
} else
sprintf(mybuf, "*.*");
return (mybuf);
}
if (ipx_wildnet(work))
net = "any";
else if (ipx_nullnet(work))
net = "*";
else {
q = work.x_net.c_net;
sprintf(cnet, "%02x%02x%02x%02x",
q[0], q[1], q[2], q[3]);
for (p = cnet; *p == '0' && p < cnet + 8; p++)
continue;
net = p;
}
if (ipx_wildhost(work))
host = "any";
else if (ipx_nullhost(work))
host = "*";
else {
q = work.x_host.c_host;
sprintf(chost, "%02x%02x%02x%02x%02x%02x",
q[0], q[1], q[2], q[3], q[4], q[5]);
for (p = chost; *p == '0' && p < chost + 12; p++)
continue;
host = p;
}
if (port) {
if (strcmp(host, "*") == 0)
host = "";
if (sp)
snprintf(cport, sizeof(cport),
"%s%s", *host ? "." : "", sp->s_name);
else
snprintf(cport, sizeof(cport),
"%s%x", *host ? "." : "", port);
} else
*cport = 0;
snprintf(mybuf, sizeof(mybuf), "%s.%s%s", net, host, cport);
return(mybuf);
}
char *
ipx_phost(struct sockaddr *sa)
{
register struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)sa;
struct sockaddr_ipx work;
static union ipx_net ipx_zeronet;
char *p;
struct ipx_addr in;
work = *sipx;
in = work.sipx_addr;
work.sipx_addr.x_port = 0;
work.sipx_addr.x_net = ipx_zeronet;
p = ipx_print((struct sockaddr *)&work);
if (strncmp("*.", p, 2) == 0) p += 2;
return(p);
}
#ifdef NS
short ns_nullh[] = {0,0,0};
short ns_bh[] = {-1,-1,-1};
char *
ns_print(struct sockaddr *sa)
{
register struct sockaddr_ns *sns = (struct sockaddr_ns*)sa;
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;
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 ) {
sprintf(mybuf, "*.%xH", port);
upHex(mybuf);
} else
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;
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++)
continue;
host = p;
}
if (port)
sprintf(cport, ".%xH", htons(port));
else
*cport = 0;
sprintf(mybuf,"%xH.%s%s", ntohl(net.long_e), host, cport);
upHex(mybuf);
return(mybuf);
}
char *
ns_phost(struct sockaddr *sa)
{
register struct sockaddr_ns *sns = (struct sockaddr_ns *)sa;
struct sockaddr_ns work;
static union ns_net ns_zeronet;
char *p;
work = *sns;
work.sns_addr.x_port = 0;
work.sns_addr.x_net = ns_zeronet;
p = ns_print((struct sockaddr *)&work);
if (strncmp("0H.", p, 3) == 0)
p += 3;
return(p);
}
#endif
void
upHex(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');
break;
}
}
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