/* * 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. * * @(#)route.c 8.6 (Berkeley) 4/28/95 * $FreeBSD: src/usr.bin/netstat/route.c,v 1.41.2.14 2002/07/17 02:22:22 kbyanc Exp $ */ #include #include #include #include #include #include #include #include #include #include #include #include #include #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 { 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' }, { RTF_MPLSOPS, 'm' }, { 0, 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 size_cols (int ef, struct radix_node *rn); static void size_cols_tree (struct radix_node *rn); static void size_cols_rtentry (struct rtentry *rt); 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 const char *fmt_sockaddr (struct sockaddr *sa, struct sockaddr *mask, int flags); static void p_flags (int, const char *); static const char *fmt_flags(int f); static void p_rtentry (struct rtentry *); static u_long forgemask (u_long); static void domask (char *, u_long, u_long); static const char *labelops(struct rtentry *); /* * 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; } if (cpuflag >= 0) { /* * Severe hack. */ rtree += cpuflag * (AF_MAX + 1) * sizeof(void *); } kget(rtree, rt_tables); for (i = 0; i <= AF_MAX; i++) { if ((rnh = rt_tables[i]) == NULL) 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) { size_cols(i, head.rnh_treetop); 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 af1) { const char *afname; switch (af1) { case AF_INET: afname = "Internet"; break; #ifdef INET6 case AF_INET6: afname = "Internet6"; break; #endif /*INET6*/ case AF_IPX: afname = "IPX"; break; case AF_ISO: afname = "ISO"; break; case AF_CCITT: afname = "X.25"; break; case AF_NETGRAPH: afname = "Netgraph"; break; case AF_MPLS: afname = "MPLS"; break; default: afname = NULL; break; } if (afname) printf("\n%s:\n", afname); else printf("\nProtocol Family %d:\n", af1); } /* column widths; each followed by one space */ #ifndef INET6 #define WID_DST_DEFAULT(af) 18 /* width of destination column */ #define WID_GW_DEFAULT(af) 18 /* width of gateway column */ #define WID_IF_DEFAULT(af) (Wflag ? 8 : 6) /* width of netif column */ #else #define WID_DST_DEFAULT(af) \ ((af) == AF_INET6 ? (numeric_addr ? 33: 18) : 18) #define WID_GW_DEFAULT(af) \ ((af) == AF_INET6 ? (numeric_addr ? 29 : 18) : 18) #define WID_IF_DEFAULT(af) ((af) == AF_INET6 ? 8 : (Wflag ? 8 :6)) #endif /*INET6*/ static int wid_dst; static int wid_gw; static int wid_flags; static int wid_refs; static int wid_use; static int wid_mtu; static int wid_if; static int wid_expire; static int wid_mplslops; static int wid_msl; static int wid_iwmax; static int wid_iw; static void size_cols(int ef, struct radix_node *rn) { wid_dst = WID_DST_DEFAULT(ef); wid_gw = WID_GW_DEFAULT(ef); wid_flags = 6; wid_refs = 6; wid_use = 8; wid_mtu = 6; wid_if = WID_IF_DEFAULT(ef); wid_expire = 6; wid_mplslops = 7; wid_msl = 7; wid_iwmax = 5; wid_iw = 2; if (Wflag) size_cols_tree(rn); } static void size_cols_tree(struct radix_node *rn) { again: kget(rn, rnode); if (rnode.rn_bit < 0) { if ((rnode.rn_flags & RNF_ROOT) == 0) { kget(rn, rtentry); size_cols_rtentry(&rtentry); } if ((rn = rnode.rn_dupedkey)) goto again; } else { rn = rnode.rn_right; size_cols_tree(rnode.rn_left); size_cols_tree(rn); } } static void size_cols_rtentry(struct rtentry *rt) { static struct ifnet ifnet, *lastif; struct rtentry parent; static char buffer[100]; const char *bp; struct sockaddr *sa; sa_u addr, mask; int len; /* * 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); bp = fmt_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags); len = strlen(bp); wid_dst = MAX(len, wid_dst); bp = fmt_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST); len = strlen(bp); wid_gw = MAX(len, wid_gw); bp = fmt_flags(rt->rt_flags); len = strlen(bp); wid_flags = MAX(len, wid_flags); if (addr.u_sa.sa_family == AF_INET || Wflag) { len = snprintf(buffer, sizeof(buffer), "%ld", rt->rt_refcnt); wid_refs = MAX(len, wid_refs); len = snprintf(buffer, sizeof(buffer), "%lu", rt->rt_use); wid_use = MAX(len, wid_use); if (Wflag && rt->rt_rmx.rmx_mtu != 0) { len = snprintf(buffer, sizeof(buffer), "%lu", rt->rt_rmx.rmx_mtu); wid_mtu = MAX(len, wid_mtu); } } if (rt->rt_ifp) { if (rt->rt_ifp != lastif) { kget(rt->rt_ifp, ifnet); lastif = rt->rt_ifp; len = strlen(ifnet.if_xname); wid_if = MAX(len, wid_if); } if (rt->rt_rmx.rmx_expire) { time_t expire_time; if ((expire_time = rt->rt_rmx.rmx_expire - time(NULL)) > 0) { snprintf(buffer, sizeof(buffer), "%d", (int)expire_time); wid_expire = MAX(len, wid_expire); } } } if (Wflag) { if (rt->rt_shim[0] != NULL) { len = strlen(labelops(rt)); wid_mplslops = MAX(len, wid_mplslops); } if (rt->rt_rmx.rmx_msl) { len = snprintf(buffer, sizeof(buffer), "%lu", rt->rt_rmx.rmx_msl); wid_msl = MAX(len, wid_msl); } if (rt->rt_rmx.rmx_iwmaxsegs) { len = snprintf(buffer, sizeof(buffer), "%lu", rt->rt_rmx.rmx_iwmaxsegs); wid_iwmax = MAX(len, wid_iwmax); } if (rt->rt_rmx.rmx_iwcapsegs) { len = snprintf(buffer, sizeof(buffer), "%lu", rt->rt_rmx.rmx_iwcapsegs); wid_iw = MAX(len, wid_iw); } } } /* * Print header for routing table columns. */ void pr_rthdr(int af1) { if (Aflag) printf("%-8.8s ","Address"); if (af1 == AF_INET || Wflag) { if (Wflag) { printf("%-*.*s %-*.*s %-*.*s %*.*s %*.*s %*.*s %*.*s " "%*s %-*s%*s %*s %*s\n", wid_dst, wid_dst, "Destination", wid_gw, wid_gw, "Gateway", wid_flags, wid_flags, "Flags", wid_refs, wid_refs, "Refs", wid_use, wid_use, "Use", wid_mtu, wid_mtu, "Mtu", wid_if, wid_if, "Netif", wid_expire, "Expire", wid_mplslops, "Labelops", wid_msl, "Msl", wid_iwmax, "IWmax", wid_iw, "IW"); } else { printf("%-*.*s %-*.*s %-*.*s %*.*s %*.*s %*.*s %*s\n", wid_dst, wid_dst, "Destination", wid_gw, wid_gw, "Gateway", wid_flags, wid_flags, "Flags", wid_refs, wid_refs, "Refs", wid_use, wid_use, "Use", wid_if, wid_if, "Netif", wid_expire, "Expire"); } } else { printf("%-*.*s %-*.*s %-*.*s %*.*s %*s\n", wid_dst, wid_dst, "Destination", wid_gw, wid_gw, "Gateway", wid_flags, wid_flags, "Flags", wid_if, wid_if, "Netif", wid_expire, "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 == NULL) 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(" , "); 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_next)) printf(" ->"); } putchar('\n'); } static void ntreestuff(void) { size_t needed; int mib[7]; int miblen; 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 (cpuflag >= 0) { mib[6] = cpuflag; miblen = 7; } else { miblen = 6; } if (sysctl(mib, miblen, NULL, &needed, NULL, 0) < 0) { err(1, "sysctl: net.route.0.0.dump estimate"); } if ((buf = malloc(needed)) == NULL) { err(2, "malloc(%lu)", (unsigned long)needed); } if (sysctl(mib, miblen, 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) { struct sockaddr *sa = (struct sockaddr *)(rtm + 1); #ifdef notdef static int masks_done, banner_printed; #endif static int old_af; int af1 = 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; af1 = sa->sa_family; } } else #endif af1 = sa->sa_family; if (af1 != old_af) { pr_family(af1); old_af = af1; } 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) { const char *cp; cp = fmt_sockaddr(sa, mask, flags); if (width < 0 ) printf("%s ", cp); else { if (numeric_addr) printf("%-*s ", width, cp); else printf("%-*.*s ", width, width, cp); } } static const char * fmt_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags) { static char workbuf[128]; const 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 && 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_NETGRAPH: { printf("%s", ((struct sockaddr_ng *)sa)->sg_data); break; } 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) sprintf(workbuf, "link#%d", sdl->sdl_index); else switch (sdl->sdl_type) { case IFT_ETHER: case IFT_L2VLAN: case IFT_CARP: if (sdl->sdl_alen == ETHER_ADDR_LEN) { cp = ether_ntoa((struct ether_addr *) (sdl->sdl_data + sdl->sdl_nlen)); break; } /* FALLTHROUGH */ default: cp = link_ntoa(sdl); break; } break; } case AF_MPLS: { struct sockaddr_mpls *smpls = (struct sockaddr_mpls *)sa; (void) sprintf(workbuf, "%d", ntohl(smpls->smpls_label)); break; } default: { u_char *s = (u_char *)sa->sa_data, *slim; char *cq, *cqlim; cq = workbuf; slim = sa->sa_len + (u_char *) sa; cqlim = cq + sizeof(workbuf) - 6; cq += sprintf(cq, "(%d)", sa->sa_family); while (s < slim && cq < cqlim) { cq += sprintf(cq, " %02x", *s++); if (s < slim) cq += sprintf(cq, "%02x", *s++); } cp = workbuf; } } return (cp); } static void p_flags(int f, const char *format) { printf(format, fmt_flags(f)); } static const char * fmt_flags(int f) { static char name[33]; char *flags; struct bits *p = bits; for (flags = name; p->b_mask; p++) if (p->b_mask & f) *flags++ = p->b_val; *flags = '\0'; return (name); } static void p_rtentry(struct rtentry *rt) { static struct ifnet ifnet, *lastif; struct rtentry parent; static char buffer[128]; static char prettyname[128]; 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); p_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST, wid_gw); snprintf(buffer, sizeof(buffer), "%%-%d.%ds ", wid_flags, wid_flags); p_flags(rt->rt_flags, buffer); if (addr.u_sa.sa_family == AF_INET || Wflag) { printf("%*ld %*lu ", wid_refs, rt->rt_refcnt, wid_use, rt->rt_use); if (Wflag) { if (rt->rt_rmx.rmx_mtu != 0) printf("%*lu ", wid_mtu, rt->rt_rmx.rmx_mtu); else printf("%*s ", wid_mtu, ""); } } if (rt->rt_ifp) { if (rt->rt_ifp != lastif) { kget(rt->rt_ifp, ifnet); lastif = rt->rt_ifp; strlcpy(prettyname, ifnet.if_xname, sizeof(prettyname)); } printf("%*.*s", wid_if, wid_if, prettyname); if (rt->rt_rmx.rmx_expire) { time_t expire_time; if ((expire_time = rt->rt_rmx.rmx_expire - time(NULL)) > 0) printf(" %*d", wid_expire, (int)expire_time); else printf("%*s ", wid_expire, ""); } else { printf("%*s ", wid_expire, ""); } if (rt->rt_nodes[0].rn_dupedkey) printf(" =>"); } if (Wflag) { if (rt->rt_shim[0] != NULL) printf(" %-*s", wid_mplslops, labelops(rt)); else printf(" %-*s", wid_mplslops, ""); if (rt->rt_rmx.rmx_msl != 0) printf(" %*lu", wid_msl, rt->rt_rmx.rmx_msl); else printf("%*s ", wid_msl, ""); if (rt->rt_rmx.rmx_iwmaxsegs != 0) printf(" %*lu", wid_iwmax, rt->rt_rmx.rmx_iwmaxsegs); else printf("%*s ", wid_iwmax, ""); if (rt->rt_rmx.rmx_iwcapsegs != 0) printf(" %*lu", wid_iw, rt->rt_rmx.rmx_iwcapsegs); else printf("%*s ", wid_iw, ""); } putchar('\n'); } char * routename(u_long in) { char *cp; static char line[MAXHOSTNAMELEN]; struct hostent *hp; cp = NULL; if (!numeric_addr) { hp = gethostbyaddr(&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) { 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) 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 = NULL; static char line[MAXHOSTNAMELEN]; struct netent *np = NULL; u_long dmask; 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 { if (mask <= IN_CLASSA_NET && (i & IN_CLASSA_HOST) == 0) { sprintf(line, "%lu", C(i >> 24)); } else if (mask <= IN_CLASSB_NET && (i & IN_CLASSB_HOST) == 0) { sprintf(line, "%lu.%lu", C(i >> 24), C(i >> 16)); } else if (mask <= IN_CLASSC_NET && (i & IN_CLASSC_HOST) == 0) { sprintf(line, "%lu.%lu.%lu", C(i >> 24), C(i >> 16), C(i >> 8)); } else { sprintf(line, "%lu.%lu.%lu.%lu", C(i >> 24), C(i >> 16), C(i >> 8), C(i)); } } domask(line + strlen(line), i, mask); return (line); } #ifdef INET6 const 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; sa6_local.sin6_family = AF_INET6; sa6_local.sin6_len = 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(void) { struct rtstatistics rts; int error = 0; error = kinfo_get_net_rtstatistics(&rts); if (error) { printf("routing: could not retrieve statistics\n"); return; } printf("routing:\n"); #define p(f, m) if (rts.f || sflag <= 1) \ printf(m, rts.f, plural(rts.f)) p(rts_badredirect, "\t%lu bad routing redirect%s\n"); p(rts_dynamic, "\t%lu dynamically created route%s\n"); p(rts_newgateway, "\t%lu new gateway%s due to redirects\n"); p(rts_unreach, "\t%lu destination%s found unreachable\n"); p(rts_wildcard, "\t%lu use%s of a wildcard route\n"); #undef p } char * ipx_print(struct sockaddr *sa) { u_short port; struct servent *sp = NULL; const char *net = "", *host = ""; char *p; 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) { 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); } void upHex(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'); break; } } static const char * labelops(struct rtentry *rt) { const char *lops[] = { "push", "pop", "swap", "pop all" }; static char buffer[100]; char *cp = buffer; struct sockaddr_mpls *smpls; int i; for (i=0; irt_shim[i] == NULL) break; if (i>0) { cp += snprintf(cp, sizeof(buffer) - (cp - buffer), ", "); } smpls = (struct sockaddr_mpls *)kgetsa(rt->rt_shim[i]); if (smpls->smpls_op != MPLSLOP_POP && smpls->smpls_op != MPLSLOP_POPALL){ cp += snprintf(cp, sizeof(buffer) - (cp - buffer), "%s %d", lops[smpls->smpls_op - 1], ntohl(smpls->smpls_label)); } else { cp += snprintf(cp, sizeof(buffer) - (cp - buffer), "%s", lops[smpls->smpls_op - 1]); } } return (buffer); }