/* $NetBSD: route.c,v 1.49 2000/07/06 12:40:19 itojun Exp $ */ /* * 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. */ #include #ifndef lint #if 0 static char sccsid[] = "from: @(#)route.c 8.3 (Berkeley) 3/9/94"; #else __RCSID("$NetBSD: route.c,v 1.49 2000/07/06 12:40:19 itojun Exp $"); #endif #endif /* not lint */ #include #include #include #include #include #include #include #include #define _KERNEL #include #undef _KERNEL #include #include #include #include #include #include #include #include #include #include #include #include #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 { short b_mask; char b_val; } bits[] = { { RTF_UP, 'U' }, { RTF_GATEWAY, 'G' }, { RTF_HOST, 'H' }, { RTF_REJECT, 'R' }, { RTF_BLACKHOLE,'B' }, { RTF_DYNAMIC, 'D' }, { RTF_MODIFIED, 'M' }, { RTF_DONE, 'd' }, /* Completed -- for routing messages only */ { RTF_MASK, 'm' }, /* Mask Present -- for routing messages only */ { RTF_CLONING, 'C' }, { RTF_XRESOLVE, 'X' }, { RTF_LLINFO, 'L' }, { RTF_STATIC, 'S' }, { RTF_PROTO1, '1' }, { RTF_PROTO2, '2' }, { 0 } }; /* * XXX we put all of the sockaddr types in here to force the alignment * to be correct. */ static union sockaddr_union { struct sockaddr u_sa; struct sockaddr_in u_in; struct sockaddr_un u_un; struct sockaddr_iso u_iso; struct sockaddr_at u_at; struct sockaddr_dl u_dl; struct sockaddr_ns u_ns; u_short u_data[128]; int u_dummy; /* force word-alignment */ } pt_u; int do_rtent = 0; struct rtentry rtentry; struct radix_node rnode; struct radix_mask rmask; int NewTree = 0; static struct sockaddr *kgetsa __P((struct sockaddr *)); static void p_tree __P((struct radix_node *)); static void p_rtnode __P((void)); static void ntreestuff __P((void)); static void np_rtentry __P((struct rt_msghdr *)); static void p_sockaddr __P((const struct sockaddr *, const struct sockaddr *, int, int)); static void p_flags __P((int, char *)); static void p_rtentry __P((struct rtentry *)); static void ntreestuff __P((void)); static u_long forgemask __P((u_long)); static void domask __P((char *, size_t, u_long, u_long)); /* * Print routing tables. */ void routepr(rtree) 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(af) int af; { char *afname; switch (af) { case AF_INET: afname = "Internet"; break; #ifdef INET6 case AF_INET6: afname = "Internet6"; break; #endif case AF_NS: afname = "XNS"; break; case AF_ISO: afname = "ISO"; break; case AF_APPLETALK: afname = "AppleTalk"; break; case AF_CCITT: afname = "X.25"; 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 */ #else /* width of destination/gateway column */ #ifdef KAME_SCOPEID /* strlen("fe80::aaaa:bbbb:cccc:dddd@gif0") == 30, strlen("/128") == 4 */ #define WID_DST(af) ((af) == AF_INET6 ? (nflag ? 34 : 18) : 18) #define WID_GW(af) ((af) == AF_INET6 ? (nflag ? 30 : 18) : 18) #else /* strlen("fe80::aaaa:bbbb:cccc:dddd") == 25, strlen("/128") == 4 */ #define WID_DST(af) ((af) == AF_INET6 ? (nflag ? 29 : 18) : 18) #define WID_GW(af) ((af) == AF_INET6 ? (nflag ? 25 : 18) : 18) #endif #endif /* INET6 */ /* * Print header for routing table columns. */ void pr_rthdr(af) int af; { if (Aflag) printf("%-8.8s ","Address"); printf("%-*.*s %-*.*s %-6.6s %6.6s%8.8s %6.6s %s\n", WID_DST(af), WID_DST(af), "Destination", WID_GW(af), WID_GW(af), "Gateway", "Flags", "Refs", "Use", "Mtu", "Interface"); } static struct sockaddr * kgetsa(dst) 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(rn) struct radix_node *rn; { again: kget(rn, rnode); if (rnode.rn_b < 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) != NULL) goto again; } else { if (Aflag && do_rtent) { printf("%-8.8lx ", (u_long) rn); p_rtnode(); } rn = rnode.rn_r; p_tree(rnode.rn_l); p_tree(rn); } } static void p_rtnode() { struct radix_mask *rm = rnode.rn_mklist; char nbuf[20]; if (rnode.rn_b < 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 { (void)snprintf(nbuf, sizeof nbuf, "(%d)", rnode.rn_b); printf("%6.6s %8.8lx : %8.8lx", nbuf, (u_long) rnode.rn_l, (u_long) rnode.rn_r); } while (rm) { kget(rm, rmask); (void)snprintf(nbuf, sizeof nbuf, " %d refs, ", rmask.rm_refs); printf(" mk = %8.8lx {(%d),%s", (u_long) rm, -1 - rmask.rm_b, rmask.rm_refs ? nbuf : " "); if (rmask.rm_flags & RNF_NORMAL) { struct radix_node rnode_aux; printf(" , "); 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) != NULL) printf(" ->"); } putchar('\n'); } static void ntreestuff() { size_t needed; int mib[6]; char *buf, *next, *lim; 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, "route sysctl estimate"); if ((buf = malloc(needed)) == 0) errx(1, "out of space"); if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) err(1, "sysctl of routing table"); lim = buf + needed; for (next = buf; next < lim; next += rtm->rtm_msglen) { rtm = (struct rt_msghdr *)next; np_rtentry(rtm); } } static void np_rtentry(rtm) struct rt_msghdr *rtm; { 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; if (Lflag && (rtm->rtm_flags & RTF_LLINFO)) return; #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); #if 0 if (sa->sa_len == 0) sa->sa_len = sizeof(long); #endif 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(sa, mask, flags, width) const struct sockaddr *sa, *mask; int flags, width; { char workbuf[128], *cplim; char *cp = workbuf; switch(sa->sa_family) { case AF_INET: { struct sockaddr_in *sin = (struct sockaddr_in *)sa; if ((sin->sin_addr.s_addr == INADDR_ANY) && (mask != NULL) && (((struct sockaddr_in *)mask)->sin_addr.s_addr == 0)) cp = "default"; else if (flags & RTF_HOST) cp = routename(sin->sin_addr.s_addr); else if (mask) cp = netname(sin->sin_addr.s_addr, ((struct sockaddr_in *)mask)->sin_addr.s_addr); else cp = netname(sin->sin_addr.s_addr, INADDR_ANY); break; } #ifdef INET6 case AF_INET6: { struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa; #ifdef KAME_SCOPEID 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; } #endif 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 #ifndef SMALL case AF_APPLETALK: case 0: { if (!(flags & RTF_HOST) && mask) cp = atalk_print2(sa,mask,11); else cp = atalk_print(sa,11); break; } case AF_NS: cp = ns_print((struct sockaddr *)sa); break; #endif case AF_LINK: { struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 && sdl->sdl_slen == 0) (void)snprintf(workbuf, sizeof workbuf, "link#%d", sdl->sdl_index); else switch (sdl->sdl_type) { case IFT_FDDI: case IFT_ETHER: { int i; u_char *lla = (u_char *)sdl->sdl_data + sdl->sdl_nlen; cplim = ""; for (i = 0; i < sdl->sdl_alen; i++, lla++) { /* XXX */ cp += sprintf(cp, "%s%02x", cplim, *lla); cplim = ":"; } cp = workbuf; break; } default: cp = link_ntoa(sdl); break; } break; } default: { 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 (nflag) printf("%-*s ", width, cp); else printf("%-*.*s ", width, width, cp); } } static void p_flags(f, format) int f; char *format; { char name[33], *flags; struct bits *p = bits; for (flags = name; p->b_mask && flags - name < sizeof(name); p++) if (p->b_mask & f) *flags++ = p->b_val; *flags = '\0'; printf(format, name); } static struct sockaddr *sockcopy __P((struct sockaddr *, union sockaddr_union *)); /* * copy a sockaddr into an allocated region, allocate at least sockaddr * bytes and zero unused */ static struct sockaddr * sockcopy(sp, dp) struct sockaddr *sp; union sockaddr_union *dp; { int len; if (sp == 0 || sp->sa_len == 0) (void)memset(dp, 0, sizeof (*sp)); else { len = (sp->sa_len >= sizeof (*sp)) ? sp->sa_len : sizeof (*sp); (void)memcpy(dp, sp, len); } return ((struct sockaddr *)dp); } static void p_rtentry(rt) struct rtentry *rt; { static struct ifnet ifnet, *lastif; union sockaddr_union addr_un, mask_un; struct sockaddr *addr, *mask; int af; if (Lflag && (rt->rt_flags & RTF_LLINFO)) return; memset(&addr_un, 0, sizeof(addr_un)); memset(&mask_un, 0, sizeof(mask_un)); addr = sockcopy(kgetsa(rt_key(rt)), &addr_un); af = addr->sa_family; if (rt_mask(rt)) mask = sockcopy(kgetsa(rt_mask(rt)), &mask_un); else mask = sockcopy(NULL, &mask_un); p_sockaddr(addr, mask, rt->rt_flags, WID_DST(af)); p_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST, WID_GW(af)); p_flags(rt->rt_flags, "%-6.6s "); printf("%6d %8lu ", rt->rt_refcnt, rt->rt_use); if (rt->rt_rmx.rmx_mtu) printf("%6lu", rt->rt_rmx.rmx_mtu); else printf("%6s", "-"); putchar((rt->rt_rmx.rmx_locks & RTV_MTU) ? 'L' : ' '); if (rt->rt_ifp) { if (rt->rt_ifp != lastif) { kget(rt->rt_ifp, ifnet); lastif = rt->rt_ifp; } printf(" %.16s%s", ifnet.if_xname, rt->rt_nodes[0].rn_dupedkey ? " =>" : ""); } putchar('\n'); if (vflag) { printf("\texpire %10lu%c recvpipe %10ld%c " "sendpipe %10ld%c\n", rt->rt_rmx.rmx_expire, (rt->rt_rmx.rmx_locks & RTV_EXPIRE) ? 'L' : ' ', rt->rt_rmx.rmx_recvpipe, (rt->rt_rmx.rmx_locks & RTV_RPIPE) ? 'L' : ' ', rt->rt_rmx.rmx_sendpipe, (rt->rt_rmx.rmx_locks & RTV_SPIPE) ? 'L' : ' '); printf("\tssthresh %10lu%c rtt %10ld%c " "rttvar %10ld%c\n", rt->rt_rmx.rmx_ssthresh, (rt->rt_rmx.rmx_locks & RTV_SSTHRESH) ? 'L' : ' ', rt->rt_rmx.rmx_rtt, (rt->rt_rmx.rmx_locks & RTV_RTT) ? 'L' : ' ', rt->rt_rmx.rmx_rttvar, (rt->rt_rmx.rmx_locks & RTV_RTTVAR) ? 'L' : ' '); } } char * routename(in) u_int32_t in; { char *cp; static char line[MAXHOSTNAMELEN + 1]; struct hostent *hp; static char domain[MAXHOSTNAMELEN + 1]; static int first = 1; if (first) { first = 0; if (gethostname(domain, MAXHOSTNAMELEN) == 0) { domain[sizeof(domain) - 1] = '\0'; if ((cp = strchr(domain, '.'))) (void)strcpy(domain, cp + 1); else domain[0] = 0; } else domain[0] = 0; } cp = 0; if (!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) { strncpy(line, cp, sizeof(line) - 1); line[sizeof(line) - 1] = '\0'; } else { #define C(x) ((x) & 0xff) in = ntohl(in); snprintf(line, sizeof line, "%u.%u.%u.%u", C(in >> 24), C(in >> 16), C(in >> 8), C(in)); } return (line); } static u_long forgemask(a) 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(dst, dlen, addr, mask) char *dst; size_t dlen; u_long addr, mask; { int b, i; if (!mask || (forgemask(addr) == mask)) { *dst = '\0'; return; } i = 0; for (b = 0; b < 32; b++) if (mask & (1 << b)) { int bb; i = b; for (bb = b+1; bb < 32; bb++) if (!(mask & (1 << bb))) { i = -1; /* noncontig */ break; } break; } if (i == -1) (void)snprintf(dst, dlen, "&0x%lx", mask); else (void)snprintf(dst, dlen, "/%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(in, mask) u_int32_t in, mask; { char *cp = 0; static char line[MAXHOSTNAMELEN + 4]; struct netent *np = 0; u_int32_t net, omask; u_int32_t i; int subnetshift; i = ntohl(in); omask = mask = ntohl(mask); if (!nflag && i != INADDR_ANY) { if (mask == INADDR_ANY) { switch (mask = forgemask(i)) { case IN_CLASSA_NET: subnetshift = 8; break; case IN_CLASSB_NET: subnetshift = 8; break; case IN_CLASSC_NET: subnetshift = 4; break; default: abort(); } /* * 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 = (long)mask >> subnetshift; } net = i & mask; /* * Note: shift the hosts bits out in octet units, since * not all versions of getnetbyaddr() do this for us (e.g. * the current `etc/networks' parser). */ while ((mask & 0xff) == 0) mask >>= 8, net >>= 8; np = getnetbyaddr(net, AF_INET); if (np) cp = np->n_name; } if (cp) strncpy(line, cp, sizeof(line) - 1); else 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)); domask(line + strlen(line), sizeof(line) - strlen(line), i, omask); return (line); } #ifdef INET6 char * netname6(sa6, mask) struct sockaddr_in6 *sa6; struct in6_addr *mask; { static char line[NI_MAXHOST]; u_char *p, *q; u_char *lim; int masklen, final = 0, illegal = 0; #ifdef KAME_SCOPEID int flag = NI_WITHSCOPEID; #else int flag = 0; #endif int error; struct sockaddr_in6 sin6; sin6 = *sa6; if (mask) { masklen = 0; lim = (u_char *)(mask + 1); for (p = (u_char *)mask, q = (u_char *)&sin6.sin6_addr; p < lim; p++, q++) { if (final && *p) { illegal++; *q = 0; continue; } switch (*p & 0xff) { case 0xff: masklen += 8; break; case 0xfe: masklen += 7; final++; break; case 0xfc: masklen += 6; final++; break; case 0xf8: masklen += 5; final++; break; case 0xf0: masklen += 4; final++; break; case 0xe0: masklen += 3; final++; break; case 0xc0: masklen += 2; final++; break; case 0x80: masklen += 1; final++; break; case 0x00: final++; break; default: final++; illegal++; break; } if (!illegal) *q &= *p; else *q = 0; } } else masklen = 128; if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr)) return("default"); if (nflag) flag |= NI_NUMERICHOST; error = getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, line, sizeof(line), NULL, 0, flag); if (error) strcpy(line, "invalid"); if (nflag) sprintf(&line[strlen(line)], "/%d", masklen); return line; } char * routename6(sa6) struct sockaddr_in6 *sa6; { static char line[NI_MAXHOST]; #ifdef KAME_SCOPEID int flag = NI_WITHSCOPEID; #else int flag = 0; #endif /* use local variable for safety */ struct sockaddr_in6 sa6_local; int error; memset(&sa6_local, 0, sizeof(sa6_local)); sa6_local.sin6_family = AF_INET6; sa6_local.sin6_len = sizeof(struct sockaddr_in6); sa6_local.sin6_addr = sa6->sin6_addr; sa6_local.sin6_scope_id = sa6->sin6_scope_id; if (nflag) flag |= NI_NUMERICHOST; error = getnameinfo((struct sockaddr *)&sa6_local, sa6_local.sin6_len, line, sizeof(line), NULL, 0, flag); if (error) strcpy(line, "invalid"); return line; } #endif /*INET6*/ /* * Print routing statistics */ void rt_stats(off) u_long off; { struct rtstat rtstat; if (off == 0) { printf("rtstat: symbol not in namelist\n"); return; } kread(off, (char *)&rtstat, sizeof (rtstat)); printf("routing:\n"); printf("\t%u bad routing redirect%s\n", rtstat.rts_badredirect, plural(rtstat.rts_badredirect)); printf("\t%u dynamically created route%s\n", rtstat.rts_dynamic, plural(rtstat.rts_dynamic)); printf("\t%u new gateway%s due to redirects\n", rtstat.rts_newgateway, plural(rtstat.rts_newgateway)); printf("\t%u destination%s found unreachable\n", rtstat.rts_unreach, plural(rtstat.rts_unreach)); printf("\t%u use%s of a wildcard route\n", rtstat.rts_wildcard, plural(rtstat.rts_wildcard)); } short ns_nullh[] = {0,0,0}; short ns_bh[] = {-1,-1,-1}; char * ns_print(sa) struct sockaddr *sa; { 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 = ""; 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.long_e == 0) { if (port ) { (void)snprintf(mybuf, sizeof mybuf, "*.%xH", port); upHex(mybuf); } else (void)snprintf(mybuf, sizeof mybuf, "*.*"); 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++) continue; host = p; } if (port) (void)snprintf(cport, sizeof cport, ".%xH", htons(port)); else *cport = 0; (void)snprintf(mybuf, sizeof mybuf, "%xH.%s%s", (int)ntohl(net.long_e), host, cport); upHex(mybuf); return (mybuf); } char * ns_phost(sa) struct sockaddr *sa; { 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); } void upHex(p0) char *p0; { char *p = p0; for (; *p; p++) switch (*p) { case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': *p += ('A' - 'a'); } }