From 5d7aa1a61363aa877d1528ef879bfdc253bdbe2d Mon Sep 17 00:00:00 2001 From: elad Date: Sun, 28 May 2006 16:51:40 +0000 Subject: [PATCH] Make netstat use sysctl when dumping routing tables/stats. Heavily based on similar code from Claudio Jeker (at OpenBSD). While here, fix inet/inet6 sysctl stuff commited previously to actually work, and some other nits to make netstat more sysctl friendly. One step closer to losing setgid kmem on this one... --- usr.bin/netstat/Makefile | 4 +- usr.bin/netstat/if.c | 14 +- usr.bin/netstat/inet.c | 20 +- usr.bin/netstat/inet6.c | 20 +- usr.bin/netstat/main.c | 23 +- usr.bin/netstat/mroute.c | 12 +- usr.bin/netstat/netstat.h | 23 +- usr.bin/netstat/route.c | 671 +++---------------------------------- usr.bin/netstat/show.c | 678 ++++++++++++++++++++++++++++++++++++++ 9 files changed, 786 insertions(+), 679 deletions(-) create mode 100644 usr.bin/netstat/show.c diff --git a/usr.bin/netstat/Makefile b/usr.bin/netstat/Makefile index 18569f2d5601..3bf6ffaba36f 100644 --- a/usr.bin/netstat/Makefile +++ b/usr.bin/netstat/Makefile @@ -1,11 +1,11 @@ -# $NetBSD: Makefile,v 1.25 2005/08/04 19:40:00 rpaulo Exp $ +# $NetBSD: Makefile,v 1.26 2006/05/28 16:51:40 elad Exp $ # from: @(#)Makefile 8.1 (Berkeley) 6/12/93 .include PROG= netstat SRCS= atalk.c bpf.c fast_ipsec.c if.c inet.c inet6.c ipsec.c iso.c \ - main.c mbuf.c mroute.c mroute6.c ns.c route.c tp_astring.c \ + main.c mbuf.c mroute.c mroute6.c ns.c show.c route.c tp_astring.c \ unix.c .PATH: ${NETBSDSRCDIR}/sys/netiso BINGRP= kmem diff --git a/usr.bin/netstat/if.c b/usr.bin/netstat/if.c index d8a70391e7ae..634203efb91f 100644 --- a/usr.bin/netstat/if.c +++ b/usr.bin/netstat/if.c @@ -1,4 +1,4 @@ -/* $NetBSD: if.c,v 1.59 2005/08/04 19:41:28 rpaulo Exp $ */ +/* $NetBSD: if.c,v 1.60 2006/05/28 16:51:40 elad Exp $ */ /* * Copyright (c) 1983, 1988, 1993 @@ -34,7 +34,7 @@ #if 0 static char sccsid[] = "from: @(#)if.c 8.2 (Berkeley) 2/21/94"; #else -__RCSID("$NetBSD: if.c,v 1.59 2005/08/04 19:41:28 rpaulo Exp $"); +__RCSID("$NetBSD: if.c,v 1.60 2006/05/28 16:51:40 elad Exp $"); #endif #endif /* not lint */ @@ -199,10 +199,10 @@ intpr(interval, ifnetaddr, pfunc) */ in = inet_makeaddr(ifaddr.in.ia_subnet, INADDR_ANY); - cp = netname(in.s_addr, + cp = netname4(in.s_addr, ifaddr.in.ia_subnetmask); #else - cp = netname(ifaddr.in.ia_subnet, + cp = netname4(ifaddr.in.ia_subnet, ifaddr.in.ia_subnetmask); #endif if (vflag) @@ -210,7 +210,7 @@ intpr(interval, ifnetaddr, pfunc) else n = 13; printf("%-*.*s ", n, n, cp); - cp = routename(sin->sin_addr.s_addr); + cp = routename4(sin->sin_addr.s_addr); if (vflag) n = strlen(cp) < 17 ? 17 : strlen(cp); else @@ -226,7 +226,7 @@ intpr(interval, ifnetaddr, pfunc) kread(multiaddr, (char *)&inm, sizeof inm); printf("\n%25s %-17.17s ", "", - routename( + routename4( inm.inm_addr.s_addr)); multiaddr = (u_long)inm.inm_list.le_next; @@ -249,7 +249,7 @@ intpr(interval, ifnetaddr, pfunc) } #endif cp = netname6(&ifaddr.in6.ia_addr, - &ifaddr.in6.ia_prefixmask.sin6_addr); + &ifaddr.in6.ia_prefixmask); if (vflag) n = strlen(cp) < 13 ? 13 : strlen(cp); else diff --git a/usr.bin/netstat/inet.c b/usr.bin/netstat/inet.c index 577e9d23f32b..70831b786127 100644 --- a/usr.bin/netstat/inet.c +++ b/usr.bin/netstat/inet.c @@ -1,4 +1,4 @@ -/* $NetBSD: inet.c,v 1.71 2006/05/21 21:01:55 liamjfoy Exp $ */ +/* $NetBSD: inet.c,v 1.72 2006/05/28 16:51:40 elad Exp $ */ /* * Copyright (c) 1983, 1988, 1993 @@ -34,7 +34,7 @@ #if 0 static char sccsid[] = "from: @(#)inet.c 8.4 (Berkeley) 4/20/94"; #else -__RCSID("$NetBSD: inet.c,v 1.71 2006/05/21 21:01:55 liamjfoy Exp $"); +__RCSID("$NetBSD: inet.c,v 1.72 2006/05/28 16:51:40 elad Exp $"); #endif #endif /* not lint */ @@ -168,14 +168,6 @@ protopr(off, name) int istcp; static int first = 1; - if (off == 0) - return; - istcp = strcmp(name, "tcp") == 0; - kread(off, (char *)&table, sizeof table); - prev = head = - (struct inpcb *)&((struct inpcbtable *)off)->inpt_queue.cqh_first; - next = (struct inpcb *)table.inpt_queue.cqh_first; - compact = 0; if (Aflag) { if (!numeric_addr) @@ -239,6 +231,14 @@ protopr(off, name) return; } + if (off == 0) + return; + istcp = strcmp(name, "tcp") == 0; + kread(off, (char *)&table, sizeof table); + prev = head = + (struct inpcb *)&((struct inpcbtable *)off)->inpt_queue.cqh_first; + next = (struct inpcb *)table.inpt_queue.cqh_first; + while (next != head) { kread((u_long)next, (char *)&inpcb, sizeof inpcb); if ((struct inpcb *)inpcb.inp_queue.cqe_prev != prev) { diff --git a/usr.bin/netstat/inet6.c b/usr.bin/netstat/inet6.c index b9be819592a9..79ce0822d95f 100644 --- a/usr.bin/netstat/inet6.c +++ b/usr.bin/netstat/inet6.c @@ -1,4 +1,4 @@ -/* $NetBSD: inet6.c,v 1.37 2006/05/21 21:01:56 liamjfoy Exp $ */ +/* $NetBSD: inet6.c,v 1.38 2006/05/28 16:51:40 elad Exp $ */ /* BSDI inet.c,v 2.3 1995/10/24 02:19:29 prb Exp */ /* @@ -64,7 +64,7 @@ #if 0 static char sccsid[] = "@(#)inet.c 8.4 (Berkeley) 4/20/94"; #else -__RCSID("$NetBSD: inet6.c,v 1.37 2006/05/21 21:01:56 liamjfoy Exp $"); +__RCSID("$NetBSD: inet6.c,v 1.38 2006/05/28 16:51:40 elad Exp $"); #endif #endif /* not lint */ @@ -224,14 +224,6 @@ ip6protopr(off, name) int istcp; static int first = 1; - if (off == 0) - return; - istcp = strcmp(name, "tcp6") == 0; - kread(off, (char *)&table, sizeof (table)); - head = prev = - (struct in6pcb *)&((struct inpcbtable *)off)->inpt_queue.cqh_first; - next = (struct in6pcb *)table.inpt_queue.cqh_first; - compact = 0; if (Aflag) { if (!numeric_addr) @@ -295,6 +287,14 @@ ip6protopr(off, name) return; } + if (off == 0) + return; + istcp = strcmp(name, "tcp6") == 0; + kread(off, (char *)&table, sizeof (table)); + head = prev = + (struct in6pcb *)&((struct inpcbtable *)off)->inpt_queue.cqh_first; + next = (struct in6pcb *)table.inpt_queue.cqh_first; + while (next != head) { kread((u_long)next, (char *)&in6pcb, sizeof in6pcb); if ((struct in6pcb *)in6pcb.in6p_queue.cqe_prev != prev) { diff --git a/usr.bin/netstat/main.c b/usr.bin/netstat/main.c index c45a22660a8e..09ae27644e66 100644 --- a/usr.bin/netstat/main.c +++ b/usr.bin/netstat/main.c @@ -1,4 +1,4 @@ -/* $NetBSD: main.c,v 1.52 2006/05/18 09:05:51 liamjfoy Exp $ */ +/* $NetBSD: main.c,v 1.53 2006/05/28 16:51:40 elad Exp $ */ /* * Copyright (c) 1983, 1988, 1993 @@ -39,7 +39,7 @@ __COPYRIGHT("@(#) Copyright (c) 1983, 1988, 1993\n\ #if 0 static char sccsid[] = "from: @(#)main.c 8.4 (Berkeley) 3/1/94"; #else -__RCSID("$NetBSD: main.c,v 1.52 2006/05/18 09:05:51 liamjfoy Exp $"); +__RCSID("$NetBSD: main.c,v 1.53 2006/05/28 16:51:40 elad Exp $"); #endif #endif /* not lint */ @@ -450,7 +450,7 @@ main(argc, argv) nlistf = optarg; break; case 'n': - numeric_addr = numeric_port = 1; + numeric_addr = numeric_port = nflag = 1; break; case 'P': errno = 0; @@ -529,7 +529,7 @@ main(argc, argv) use_sysctl = (nlistf == NULL && memf == NULL); - if ((kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, + if (!use_sysctl && (kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == NULL) errx(1, "%s", buf); @@ -547,7 +547,7 @@ main(argc, argv) } #endif - if (kvm_nlist(kvmd, nl) < 0 || nl[0].n_type == 0) { + if (!use_sysctl && (kvm_nlist(kvmd, nl) < 0 || nl[0].n_type == 0)) { if (nlistf) errx(1, "%s: no namelist", nlistf); else @@ -599,9 +599,13 @@ main(argc, argv) } if (rflag) { if (sflag) - rt_stats(nl[N_RTSTAT].n_value); - else - routepr(nl[N_RTREE].n_value); + rt_stats(use_sysctl ? 0 : nl[N_RTSTAT].n_value); + else { + if (use_sysctl) + p_rttables(af); + else + routepr(nl[N_RTREE].n_value); + } exit(0); } #ifndef SMALL @@ -708,8 +712,9 @@ printproto(tp, name) pr = tp->pr_cblocks; off = nl[tp->pr_index].n_value; } - if (pr != NULL && (off || af != AF_UNSPEC)) + if (pr != NULL && ((off || af != AF_UNSPEC) || use_sysctl)) { (*pr)(off, name); + } } /* diff --git a/usr.bin/netstat/mroute.c b/usr.bin/netstat/mroute.c index e889512e5760..ccaa459ccf80 100644 --- a/usr.bin/netstat/mroute.c +++ b/usr.bin/netstat/mroute.c @@ -1,4 +1,4 @@ -/* $NetBSD: mroute.c,v 1.20 2005/08/04 19:41:28 rpaulo Exp $ */ +/* $NetBSD: mroute.c,v 1.21 2006/05/28 16:51:40 elad Exp $ */ /* * Copyright (c) 1992, 1993 @@ -76,7 +76,7 @@ #if 0 static char sccsid[] = "from: @(#)mroute.c 8.1 (Berkeley) 6/6/93"; #else -__RCSID("$NetBSD: mroute.c,v 1.20 2005/08/04 19:41:28 rpaulo Exp $"); +__RCSID("$NetBSD: mroute.c,v 1.21 2006/05/28 16:51:40 elad Exp $"); #endif #endif /* not lint */ @@ -198,9 +198,9 @@ mroutepr(mrpaddr, mfchashtbladdr, mfchashaddr, vifaddr) printf(" %3u %3u %5u %-15.15s", vifi, v->v_threshold, v->v_rate_limit, - routename(v->v_lcl_addr.s_addr)); + routename4(v->v_lcl_addr.s_addr)); printf(" %-15.15s %6lu %7lu\n", (v->v_flags & VIFF_TUNNEL) ? - routename(v->v_rmt_addr.s_addr) : "", + routename4(v->v_rmt_addr.s_addr) : "", v->v_pkt_in, v->v_pkt_out); } if (!banner_printed) @@ -225,9 +225,9 @@ mroutepr(mrpaddr, mfchashtbladdr, mfchashaddr, vifaddr) kread((u_long)mfcp, (char *)&mfc, sizeof(mfc)); printf(" %3u %-15.15s", - i, routename(mfc.mfc_origin.s_addr)); + i, routename4(mfc.mfc_origin.s_addr)); printf(" %-15.15s %7s %3u ", - routename(mfc.mfc_mcastgrp.s_addr), + routename4(mfc.mfc_mcastgrp.s_addr), pktscale(mfc.mfc_pkt_cnt), mfc.mfc_parent); for (vifi = 0; vifi <= numvifs; ++vifi) if (mfc.mfc_ttls[vifi]) diff --git a/usr.bin/netstat/netstat.h b/usr.bin/netstat/netstat.h index 2e0386e6f2ec..d4d1cf0afa17 100644 --- a/usr.bin/netstat/netstat.h +++ b/usr.bin/netstat/netstat.h @@ -1,4 +1,4 @@ -/* $NetBSD: netstat.h,v 1.34 2006/05/23 14:31:11 rpaulo Exp $ */ +/* $NetBSD: netstat.h,v 1.35 2006/05/28 16:51:40 elad Exp $ */ /* * Copyright (c) 1992, 1993 @@ -47,6 +47,7 @@ int lflag; /* show routing table with use and ref */ int mflag; /* show memory stats */ int numeric_addr; /* show addresses numerically */ int numeric_port; /* show ports numerically */ +int nflag; /* same as above, for show.c compat */ int Pflag; /* dump a PCB */ int pflag; /* show given protocol */ int qflag; /* show softintrq */ @@ -114,16 +115,26 @@ void mbpr(u_long, u_long, u_long, u_long, u_long); void hostpr __P((u_long, u_long)); void impstats __P((u_long, u_long)); -void pr_rthdr __P((int)); +void pr_rthdr __P((int, int)); void pr_family __P((int)); void rt_stats __P((u_long)); char *ns_phost __P((struct sockaddr *)); void upHex __P((char *)); -char *routename __P((u_int32_t)); -char *netname __P((u_int32_t, u_int32_t)); +void p_rttables(int); +void p_flags(int, char *); +void p_addr(struct sockaddr *, struct sockaddr *, int); +void p_gwaddr(struct sockaddr *, int); +void p_sockaddr(struct sockaddr *, struct sockaddr *, int, int); +char *routename(struct sockaddr *); +char *routename4(in_addr_t); +char *netname(struct sockaddr *, struct sockaddr *); +char *netname4(in_addr_t, in_addr_t); + +/* char *routename __P((u_int32_t)); */ +/* char *netname __P((u_int32_t, u_int32_t)); */ #ifdef INET6 -char *netname6 __P((struct sockaddr_in6 *, struct in6_addr *)); +char *netname6 __P((struct sockaddr_in6 *, struct sockaddr_in6 *)); #endif char *atalk_print __P((const struct sockaddr *, int)); char *atalk_print2 __P((const struct sockaddr *, const struct sockaddr *, @@ -157,3 +168,5 @@ void mrt_stats __P((u_long, u_long)); void bpf_stats(void); void bpf_dump(char *); + +#define PLEN (LONG_BIT / 4 + 2) diff --git a/usr.bin/netstat/route.c b/usr.bin/netstat/route.c index 2e383565c01e..cd964b11df6f 100644 --- a/usr.bin/netstat/route.c +++ b/usr.bin/netstat/route.c @@ -1,4 +1,4 @@ -/* $NetBSD: route.c,v 1.66 2005/08/04 19:41:28 rpaulo Exp $ */ +/* $NetBSD: route.c,v 1.67 2006/05/28 16:51:40 elad Exp $ */ /* * Copyright (c) 1983, 1988, 1993 @@ -34,7 +34,7 @@ #if 0 static char sccsid[] = "from: @(#)route.c 8.3 (Berkeley) 3/9/94"; #else -__RCSID("$NetBSD: route.c,v 1.66 2005/08/04 19:41:28 rpaulo Exp $"); +__RCSID("$NetBSD: route.c,v 1.67 2006/05/28 16:51:40 elad Exp $"); #endif #endif /* not lint */ @@ -77,32 +77,6 @@ __RCSID("$NetBSD: route.c,v 1.66 2005/08/04 19:41:28 rpaulo Exp $"); ((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_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_BLACKHOLE,'B' }, - { RTF_CLONED, 'c' }, - { RTF_PROTO1, '1' }, - { RTF_PROTO2, '2' }, - { 0 } -}; - /* * XXX we put all of the sockaddr types in here to force the alignment * to be correct. @@ -124,20 +98,10 @@ 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)); -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)); +static struct sockaddr *kgetsa(struct sockaddr *); +static void p_tree(struct radix_node *); +static void p_rtnode(void); +static void p_krtentry(struct rtentry *); /* * Print routing tables. @@ -152,107 +116,30 @@ routepr(rtree) printf("Routing tables\n"); - if (Aflag == 0 && NewTree) - ntreestuff(); - else { - if (rtree == 0) { - printf("rt_tables: symbol not in namelist\n"); - return; - } + 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); + 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 || af == 0xff)) { + printf("Netmasks:\n"); p_tree(head.rnh_treetop); } + } else if (af == AF_UNSPEC || af == i) { + pr_family(i); + do_rtent = 1; + pr_rthdr(i, Aflag); + 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 */ -#if 1 -/* strlen("fe80::aaaa:bbbb:cccc:dddd@gif0") == 30, strlen("/128") == 4 */ -#define WID_DST(af) ((af) == AF_INET6 ? (numeric_addr ? 34 : 18) : 18) -#define WID_GW(af) ((af) == AF_INET6 ? (numeric_addr ? 30 : 18) : 18) -#else -/* strlen("fe80::aaaa:bbbb:cccc:dddd") == 25, strlen("/128") == 4 */ -#define WID_DST(af) ((af) == AF_INET6 ? (numeric_addr ? 29 : 18) : 18) -#define WID_GW(af) ((af) == AF_INET6 ? (numeric_addr ? 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; @@ -280,7 +167,7 @@ again: rnode.rn_dupedkey ? " =>\n" : "\n"); } else if (do_rtent) { kget(rn, rtentry); - p_rtentry(&rtentry); + p_krtentry(&rtentry); if (Aflag) p_rtnode(); } else { @@ -340,212 +227,6 @@ p_rtnode() 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); - 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; - char *ep = workbuf + sizeof(workbuf); - int n; - - 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__ - 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: - if (getnameinfo(sa, sa->sa_len, workbuf, sizeof(workbuf), - NULL, 0, NI_NUMERICHOST) != 0) - strlcpy(workbuf, "invalid", sizeof(workbuf)); - cp = workbuf; - break; - - default: - { - u_char *s = (u_char *)sa->sa_data, *slim; - - slim = sa->sa_len + (u_char *) sa; - cplim = cp + sizeof(workbuf) - 6; - n = snprintf(cp, ep - cp, "(%d)", sa->sa_family); - if (n >= ep - cp) - n = ep - cp - 1; - if (n > 0) - cp += n; - while (s < slim && cp < cplim) { - n = snprintf(cp, ep - cp, " %02x", *s++); - if (n >= ep - cp) - n = ep - cp - 1; - if (n > 0) - cp += n; - if (s < slim) { - n = snprintf(cp, ep - cp, "%02x", *s++); - if (n >= ep - cp) - n = ep - cp - 1; - if (n > 0) - cp += n; - } - } - 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(f) - int f; -{ - 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("%-6.6s ", name); -} - static struct sockaddr *sockcopy __P((struct sockaddr *, union sockaddr_union *)); @@ -570,7 +251,7 @@ sockcopy(sp, dp) } static void -p_rtentry(rt) +p_krtentry(rt) struct rtentry *rt; { static struct ifnet ifnet, *lastif; @@ -589,9 +270,9 @@ p_rtentry(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); + p_addr(addr, mask, rt->rt_flags); + p_gwaddr(kgetsa(rt->rt_gateway), kgetsa(rt->rt_gateway)->sa_family); + 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); @@ -630,286 +311,6 @@ p_rtentry(rt) } } -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)strlcpy(domain, cp + 1, sizeof(domain)); - else - domain[0] = 0; - } else - domain[0] = 0; - } - cp = 0; - if (!numeric_addr) { - 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) - strlcpy(line, cp, sizeof(line)); - 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) { - *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 (!numeric_addr && 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) - strlcpy(line, cp, sizeof(line)); - 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; - int flag = 0; - 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 (numeric_addr) - flag |= NI_NUMERICHOST; - error = getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, - line, sizeof(line), NULL, 0, flag); - if (error) - strlcpy(line, "invalid", sizeof(line)); - - if (numeric_addr) - snprintf(&line[strlen(line)], sizeof(line) - strlen(line), - "/%d", masklen); - - return line; -} - -char * -routename6(sa6) - struct sockaddr_in6 *sa6; -{ - static char line[NI_MAXHOST]; - int flag = 0; - /* 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 (numeric_addr) - flag |= NI_NUMERICHOST; - - error = getnameinfo((struct sockaddr *)&sa6_local, sa6_local.sin6_len, - line, sizeof(line), NULL, 0, flag); - if (error) - strlcpy(line, "invalid", sizeof(line)); - - return line; -} -#endif /*INET6*/ - /* * Print routing statistics */ @@ -919,11 +320,18 @@ rt_stats(off) { struct rtstat rtstat; - if (off == 0) { + if (use_sysctl) { + size_t rtsize = sizeof(rtstat); + + if (sysctlbyname("net.route.stats", &rtstat, &rtsize, + NULL, 0) == -1) + err(1, "rt_stats: sysctl"); + } else if (off == 0) { printf("rtstat: symbol not in namelist\n"); return; - } - kread(off, (char *)&rtstat, sizeof (rtstat)); + } else + kread(off, (char *)&rtstat, sizeof (rtstat)); + printf("routing:\n"); printf("\t%llu bad routing redirect%s\n", (unsigned long long)rtstat.rts_badredirect, @@ -941,6 +349,7 @@ rt_stats(off) (unsigned long long)rtstat.rts_wildcard, plural(rtstat.rts_wildcard)); } + short ns_nullh[] = {0,0,0}; short ns_bh[] = {-1,-1,-1}; @@ -1032,3 +441,5 @@ upHex(p0) *p += ('A' - 'a'); } } + + diff --git a/usr.bin/netstat/show.c b/usr.bin/netstat/show.c new file mode 100644 index 000000000000..ea5d5374ad50 --- /dev/null +++ b/usr.bin/netstat/show.c @@ -0,0 +1,678 @@ +/* $NetBSD: show.c,v 1.1 2006/05/28 16:51:40 elad Exp $ */ +/* $OpenBSD: show.c,v 1.1 2006/05/27 19:16:37 claudio 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. 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 +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "netstat.h" + +char *any_ntoa(const struct sockaddr *); +char *link_print(struct sockaddr *); + +#define ROUNDUP(a) \ + ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) +#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) + +#define PFKEYV2_CHUNK sizeof(u_int64_t) + +/* + * Definitions for showing gateway flags. + */ +struct bits { + int b_mask; + char b_val; +}; +static const struct bits 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' }, + /* { RTF_PROTO3, '3' }, */ + { RTF_CLONED, 'c' }, + /* { RTF_JUMBO, 'J' }, */ + { 0 } +}; + +void pr_rthdr(int, int); +void p_rtentry(struct rt_msghdr *); +void pr_family(int); +void p_sockaddr(struct sockaddr *, struct sockaddr *, int, int); +void p_flags(int, char *); +char *routename4(in_addr_t); +char *routename6(struct sockaddr_in6 *); + +/* + * Print routing tables. + */ +void +p_rttables(int af) +{ + struct rt_msghdr *rtm; + char *buf = NULL, *next, *lim = NULL; + size_t needed; + int mib[6]; + struct sockaddr *sa; + + mib[0] = CTL_NET; + mib[1] = PF_ROUTE; + mib[2] = 0; + mib[3] = af; + mib[4] = NET_RT_DUMP; + mib[5] = 0; + if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) + err(1, "route-sysctl-estimate"); + if (needed > 0) { + if ((buf = malloc(needed)) == 0) + err(1, NULL); + if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) + err(1, "sysctl of routing table"); + lim = buf + needed; + } + + printf("Routing tables\n"); + + if (buf) { + for (next = buf; next < lim; next += rtm->rtm_msglen) { + rtm = (struct rt_msghdr *)next; + sa = (struct sockaddr *)(rtm + 1); + if (af != AF_UNSPEC && sa->sa_family != af) + continue; + p_rtentry(rtm); + } + free(buf); + buf = NULL; + } + + if (af != 0 && af != PF_KEY) + return; + +#ifdef notyet /* XXX elad */ + mib[0] = CTL_NET; + mib[1] = PF_KEY; + mib[2] = PF_KEY_V2; + mib[3] = NET_KEY_SPD_DUMP; + mib[4] = mib[5] = 0; + + if (sysctl(mib, 4, NULL, &needed, NULL, 0) == -1) { + if (errno == ENOPROTOOPT) + return; + err(1, "spd-sysctl-estimate"); + } + if (needed > 0) { + if ((buf = malloc(needed)) == 0) + err(1, NULL); + if (sysctl(mib, 4, buf, &needed, NULL, 0) == -1) + err(1,"sysctl of spd"); + lim = buf + needed; + } + + if (buf) { + printf("\nEncap:\n"); + + for (next = buf; next < lim; next += msg->sadb_msg_len * + PFKEYV2_CHUNK) { + msg = (struct sadb_msg *)next; + if (msg->sadb_msg_len == 0) + break; + p_pfkentry(msg); + } + free(buf); + buf = NULL; + } +#endif +} + +/* + * column widths; each followed by one space + * width of destination/gateway column + * 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) + +/* + * Print header for routing table columns. + */ +void +pr_rthdr(int af, int Aflag) +{ + if (Aflag) + printf("%-*.*s ", PLEN, PLEN, "Address"); + if (af != PF_KEY) + 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"); + else + printf("%-18s %-5s %-18s %-5s %-5s %-22s\n", + "Source", "Port", "Destination", + "Port", "Proto", "SA(Address/Proto/Type/Direction)"); +} + +static void +get_rtaddrs(int addrs, struct sockaddr *sa, struct sockaddr **rti_info) +{ + int i; + + for (i = 0; i < RTAX_MAX; i++) { + if (addrs & (1 << i)) { + rti_info[i] = sa; + sa = (struct sockaddr *)((char *)(sa) + + ROUNDUP(sa->sa_len)); + } else + rti_info[i] = NULL; + } +} + +/* + * Print a routing table entry. + */ +void +p_rtentry(struct rt_msghdr *rtm) +{ + static int old_af = -1; + struct sockaddr *sa = (struct sockaddr *)(rtm + 1); + struct sockaddr *mask, *rti_info[RTAX_MAX]; + char ifbuf[IF_NAMESIZE]; + + + if (old_af != sa->sa_family) { + old_af = sa->sa_family; + pr_family(sa->sa_family); + pr_rthdr(sa->sa_family, 0); + } + get_rtaddrs(rtm->rtm_addrs, sa, rti_info); + + mask = rti_info[RTAX_NETMASK]; + if ((sa = rti_info[RTAX_DST]) == NULL) + return; + + p_sockaddr(sa, mask, rtm->rtm_flags, WID_DST(sa->sa_family)); + p_sockaddr(rti_info[RTAX_GATEWAY], NULL, RTF_HOST, + WID_GW(sa->sa_family)); + p_flags(rtm->rtm_flags, "%-6.6s "); +#ifdef notyet /* XXX elad */ + printf("%6d %8ld ", (int)rtm->rtm_rmx.rmx_refcnt, + rtm->rtm_rmx.rmx_pksent); +#endif + if (rtm->rtm_rmx.rmx_mtu) + printf("%6ld ", rtm->rtm_rmx.rmx_mtu); + else + printf("%6s ", "-"); + putchar((rtm->rtm_rmx.rmx_locks & RTV_MTU) ? 'L' : ' '); + printf(" %.16s", if_indextoname(rtm->rtm_index, ifbuf)); + putchar('\n'); +} + +/* + * 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; + case AF_INET6: + afname = "Internet6"; + break; + case PF_KEY: + afname = "Encap"; + break; + case AF_APPLETALK: + afname = "AppleTalk"; + break; + default: + afname = NULL; + break; + } + if (afname) + printf("\n%s:\n", afname); + else + printf("\nProtocol Family %d:\n", af); +} + +void +p_addr(struct sockaddr *sa, struct sockaddr *mask, int flags) +{ + p_sockaddr(sa, mask, flags, WID_DST(sa->sa_family)); +} + +void +p_gwaddr(struct sockaddr *sa, int af) +{ + p_sockaddr(sa, 0, RTF_HOST, WID_GW(af)); +} + +void +p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width) +{ + char *cp; + + switch (sa->sa_family) { + 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 = routename((struct sockaddr *)sa6); + else + cp = netname((struct sockaddr *)sa6, mask); + break; + } + default: + if ((flags & RTF_HOST) || mask == NULL) + cp = routename(sa); + else + cp = netname(sa, mask); + break; + } + if (width < 0) + printf("%s", cp); + else { + if (nflag) + printf("%-*s ", width, cp); + else + printf("%-*.*s ", width, width, cp); + } +} + +void +p_flags(int f, char *format) +{ + char name[33], *flags; + const struct bits *p = bits; + + for (flags = name; p->b_mask && flags < &name[sizeof(name) - 2]; p++) + if (p->b_mask & f) + *flags++ = p->b_val; + *flags = '\0'; + printf(format, name); +} + +static char line[MAXHOSTNAMELEN]; +static char domain[MAXHOSTNAMELEN]; + +char * +routename(struct sockaddr *sa) +{ + char *cp = NULL; + static int first = 1; + + if (first) { + first = 0; + if (gethostname(domain, sizeof(domain)) == 0 && + (cp = strchr(domain, '.'))) + (void)strlcpy(domain, cp + 1, sizeof(domain)); + else + domain[0] = '\0'; + cp = NULL; + } + + if (sa->sa_len == 0) { + (void)strlcpy(line, "default", sizeof(line)); + return (line); + } + + switch (sa->sa_family) { + case AF_INET: + return + (routename4(((struct sockaddr_in *)sa)->sin_addr.s_addr)); + + case AF_INET6: + { + struct sockaddr_in6 sin6; + + memset(&sin6, 0, sizeof(sin6)); + memcpy(&sin6, sa, sa->sa_len); + sin6.sin6_len = sizeof(struct sockaddr_in6); + sin6.sin6_family = AF_INET6; + 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; + } + return (routename6(&sin6)); + } + + case AF_LINK: + return (link_print(sa)); + +#ifdef notyet /* XXX elad */ + case AF_UNSPEC: + if (sa->sa_len == sizeof(struct sockaddr_rtlabel)) { + static char name[RTLABEL_LEN]; + struct sockaddr_rtlabel *sr; + + sr = (struct sockaddr_rtlabel *)sa; + strlcpy(name, sr->sr_label, sizeof(name)); + return (name); + } + /* FALLTHROUGH */ +#endif + default: + (void)snprintf(line, sizeof(line), "(%d) %s", + sa->sa_family, any_ntoa(sa)); + break; + } + return (line); +} + +char * +routename4(in_addr_t in) +{ + char *cp = NULL; + struct in_addr ina; + struct hostent *hp; + + if (in == INADDR_ANY) + cp = "default"; + if (!cp && !nflag) { + if ((hp = gethostbyaddr((char *)&in, + sizeof(in), AF_INET)) != NULL) { + if ((cp = strchr(hp->h_name, '.')) && + !strcmp(cp + 1, domain)) + *cp = '\0'; + cp = hp->h_name; + } + } + ina.s_addr = in; + strlcpy(line, cp ? cp : inet_ntoa(ina), sizeof(line)); + + return (line); +} + +char * +routename6(struct sockaddr_in6 *sin6) +{ + int niflags = 0; + + if (nflag) + niflags |= NI_NUMERICHOST; + else + niflags |= NI_NOFQDN; + + if (getnameinfo((struct sockaddr *)sin6, sin6->sin6_len, + line, sizeof(line), NULL, 0, niflags) != 0) + strncpy(line, "invalid", sizeof(line)); + + 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 * +netname4(in_addr_t in, in_addr_t mask) +{ + char *cp = NULL; + struct netent *np = NULL; + int mbits; + + in = ntohl(in); + mask = ntohl(mask); + if (!nflag && in != INADDR_ANY) { + if ((np = getnetbyaddr(in, AF_INET)) != NULL) + cp = np->n_name; + } + if (in == INADDR_ANY) + cp = "default"; + mbits = mask ? 33 - ffs(mask) : 0; + if (cp) + strlcpy(line, cp, sizeof(line)); +#define C(x) ((x) & 0xff) + else if (mbits < 9) + snprintf(line, sizeof(line), "%u/%d", C(in >> 24), mbits); + else if (mbits < 17) + snprintf(line, sizeof(line), "%u.%u/%d", + C(in >> 24) , C(in >> 16), mbits); + else if (mbits < 25) + snprintf(line, sizeof(line), "%u.%u.%u/%d", + C(in >> 24), C(in >> 16), C(in >> 8), mbits); + else + snprintf(line, sizeof(line), "%u.%u.%u.%u/%d", C(in >> 24), + C(in >> 16), C(in >> 8), C(in), mbits); +#undef C + return (line); +} + +char * +netname6(struct sockaddr_in6 *sa6, struct sockaddr_in6 *mask) +{ + struct sockaddr_in6 sin6; + u_char *p; + int masklen, final = 0, illegal = 0; + int i, lim, flag, error; + char hbuf[NI_MAXHOST]; + + sin6 = *sa6; + + flag = 0; + masklen = 0; + if (mask) { + lim = mask->sin6_len - offsetof(struct sockaddr_in6, sin6_addr); + lim = lim < sizeof(struct in6_addr) ? + lim : sizeof(struct in6_addr); + for (p = (u_char *)&mask->sin6_addr, i = 0; i < lim; p++) { + if (final && *p) { + illegal++; + sin6.sin6_addr.s6_addr[i++] = 0x00; + 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) + sin6.sin6_addr.s6_addr[i++] &= *p; + else + sin6.sin6_addr.s6_addr[i++] = 0x00; + } + while (i < sizeof(struct in6_addr)) + sin6.sin6_addr.s6_addr[i++] = 0x00; + } else + masklen = 128; + + if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sin6.sin6_addr)) + return ("default"); + + if (illegal) + warnx("illegal prefixlen"); + + if (nflag) + flag |= NI_NUMERICHOST; + error = getnameinfo((struct sockaddr *)&sin6, sin6.sin6_len, + hbuf, sizeof(hbuf), NULL, 0, flag); + if (error) + snprintf(hbuf, sizeof(hbuf), "invalid"); + + snprintf(line, sizeof(line), "%s/%d", hbuf, masklen); + 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 *mask) +{ + switch (sa->sa_family) { + + case AF_INET: + return netname4(((struct sockaddr_in *)sa)->sin_addr.s_addr, + ((struct sockaddr_in *)mask)->sin_addr.s_addr); + case AF_INET6: + return netname6((struct sockaddr_in6 *)sa, + (struct sockaddr_in6 *)mask); + case AF_LINK: + return (link_print(sa)); + default: + snprintf(line, sizeof(line), "af %d: %s", + sa->sa_family, any_ntoa(sa)); + break; + } + return (line); +} + +static const char hexlist[] = "0123456789abcdef"; + +char * +any_ntoa(const struct sockaddr *sa) +{ + static char obuf[240]; + const char *in = sa->sa_data; + char *out = obuf; + int len = sa->sa_len - offsetof(struct sockaddr, sa_data); + + *out++ = 'Q'; + do { + *out++ = hexlist[(*in >> 4) & 15]; + *out++ = hexlist[(*in++) & 15]; + *out++ = '.'; + } while (--len > 0 && (out + 3) < &obuf[sizeof(obuf) - 1]); + out[-1] = '\0'; + return (obuf); +} + +char * +link_print(struct sockaddr *sa) +{ + struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; + u_char *lla = (u_char *)sdl->sdl_data + sdl->sdl_nlen; + + if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 && + sdl->sdl_slen == 0) { + (void)snprintf(line, sizeof(line), "link#%d", sdl->sdl_index); + return (line); + } + switch (sdl->sdl_type) { + case IFT_ETHER: +#ifdef notyet /* XXX elad */ + case IFT_CARP: +#endif + return (ether_ntoa((struct ether_addr *)lla)); + default: + return (link_ntoa(sdl)); + } +}