/* $OpenBSD: main.c,v 1.62 2006/05/27 19:16:37 claudio Exp $ */ /* $NetBSD: main.c,v 1.9 1996/05/07 02:55:02 thorpej Exp $ */ /* * Copyright (c) 1983, 1988, 1993 * 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. */ #ifndef lint char copyright[] = "@(#) Copyright (c) 1983, 1988, 1993\n\ Regents of the University of California. All rights reserved.\n"; #endif /* not lint */ #ifndef lint #if 0 static char sccsid[] = "from: @(#)main.c 8.4 (Berkeley) 3/1/94"; #else static char *rcsid = "$OpenBSD: main.c,v 1.62 2006/05/27 19:16:37 claudio Exp $"; #endif #endif /* not lint */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "netstat.h" struct nlist nl[] = { #define N_MBSTAT 0 { "_mbstat" }, #define N_IPSTAT 1 { "_ipstat" }, #define N_TCBTABLE 2 { "_tcbtable" }, #define N_TCPSTAT 3 { "_tcpstat" }, #define N_UDBTABLE 4 { "_udbtable" }, #define N_UDPSTAT 5 { "_udpstat" }, #define N_IFNET 6 { "_ifnet" }, #define N_ICMPSTAT 7 { "_icmpstat" }, #define N_RTSTAT 8 { "_rtstat" }, #define N_UNIXSW 9 { "_unixsw" }, #define N_RTREE 10 { "_rt_tables"}, #define N_FILE 11 { "_file" }, #define N_IGMPSTAT 12 { "_igmpstat" }, #define N_MRTPROTO 13 { "_ip_mrtproto" }, #define N_MRTSTAT 14 { "_mrtstat" }, #define N_MFCHASHTBL 15 { "_mfchashtbl" }, #define N_MFCHASH 16 { "_mfchash" }, #define N_VIFTABLE 17 { "_viftable" }, #define N_IPX 18 { "_ipxcbtable"}, #define N_IPXSTAT 19 { "_ipxstat"}, #define N_SPXSTAT 20 { "_spx_istat"}, #define N_AHSTAT 21 { "_ahstat"}, #define N_ESPSTAT 22 { "_espstat"}, #define N_IP4STAT 23 { "_ipipstat"}, #define N_DDPSTAT 24 { "_ddpstat"}, #define N_DDPCB 25 { "_ddpcb"}, #define N_ETHERIPSTAT 26 { "_etheripstat"}, #define N_IP6STAT 27 { "_ip6stat" }, #define N_ICMP6STAT 28 { "_icmp6stat" }, #define N_PIM6STAT 29 { "_pim6stat" }, #define N_MRT6PROTO 30 { "_ip6_mrtproto" }, #define N_MRT6STAT 31 { "_mrt6stat" }, #define N_MF6CTABLE 32 { "_mf6ctable" }, #define N_MIF6TABLE 33 { "_mif6table" }, #define N_MBPOOL 34 { "_mbpool" }, #define N_MCLPOOL 35 { "_mclpool" }, #define N_IPCOMPSTAT 36 { "_ipcompstat" }, #define N_RIP6STAT 37 { "_rip6stat" }, #define N_CARPSTAT 38 { "_carpstats" }, #define N_RAWIPTABLE 39 { "_rawcbtable" }, #define N_RAWIP6TABLE 40 { "_rawin6pcbtable" }, #define N_PFSYNCSTAT 41 { "_pfsyncstats" }, #define N_PIMSTAT 42 { "_pimstat" }, { ""} }; struct protox { u_char pr_index; /* index into nlist of cb head */ u_char pr_sindex; /* index into nlist of stat block */ u_char pr_wanted; /* 1 if wanted, 0 otherwise */ void (*pr_cblocks)(u_long, char *); /* control blocks printing routine */ void (*pr_stats)(u_long, char *); /* statistics printing routine */ void (*pr_dump)(u_long); /* pcb printing routine */ char *pr_name; /* well-known name */ } protox[] = { { N_TCBTABLE, N_TCPSTAT, 1, protopr, tcp_stats, tcp_dump, "tcp" }, { N_UDBTABLE, N_UDPSTAT, 1, protopr, udp_stats, 0, "udp" }, { N_RAWIPTABLE, N_IPSTAT, 1, protopr, ip_stats, 0, "ip" }, { -1, N_ICMPSTAT, 1, 0, icmp_stats, 0, "icmp" }, { -1, N_IGMPSTAT, 1, 0, igmp_stats, 0, "igmp" }, { -1, N_AHSTAT, 1, 0, ah_stats, 0, "ah" }, { -1, N_ESPSTAT, 1, 0, esp_stats, 0, "esp" }, { -1, N_IP4STAT, 1, 0, ipip_stats, 0, "ipencap" }, { -1, N_ETHERIPSTAT, 1, 0, etherip_stats,0, "etherip" }, { -1, N_IPCOMPSTAT, 1, 0, ipcomp_stats, 0, "ipcomp" }, { -1, N_CARPSTAT, 1, 0, carp_stats, 0, "carp" }, { -1, N_PFSYNCSTAT, 1, 0, pfsync_stats, 0, "pfsync" }, { -1, N_PIMSTAT, 1, 0, pim_stats, 0, "pim" }, { -1, -1, 0, 0, 0, 0, 0 } }; #ifdef INET6 struct protox ip6protox[] = { { N_TCBTABLE, N_TCPSTAT, 1, ip6protopr, 0, tcp_dump, "tcp" }, { N_UDBTABLE, N_UDPSTAT, 1, ip6protopr, 0, 0, "udp" }, { N_RAWIP6TABLE,N_IP6STAT, 1, ip6protopr, ip6_stats, 0, "ip6" }, { -1, N_ICMP6STAT, 1, 0, icmp6_stats, 0, "icmp6" }, { -1, N_PIM6STAT, 1, 0, pim6_stats, 0, "pim6" }, { -1, N_RIP6STAT, 1, 0, rip6_stats, 0, "rip6" }, { -1, -1, 0, 0, 0, 0, 0 } }; #endif struct protox ipxprotox[] = { { N_IPX, N_IPXSTAT, 1, ipxprotopr, ipx_stats, 0, "ipx" }, { N_IPX, N_SPXSTAT, 1, ipxprotopr, spx_stats, 0, "spx" }, { -1, -1, 0, 0, 0, 0, 0 } }; struct protox atalkprotox[] = { { N_DDPCB, N_DDPSTAT, 1, atalkprotopr, ddp_stats, 0, "ddp" }, { -1, -1, 0, 0, 0, 0, 0 } }; #ifndef INET6 struct protox *protoprotox[] = { protox, ipxprotox, atalkprotox, NULL }; #else struct protox *protoprotox[] = { protox, ip6protox, ipxprotox, atalkprotox, NULL }; #endif static void printproto(struct protox *, char *); static void usage(void); static struct protox *name2protox(char *); static struct protox *knownname(char *); kvm_t *kvmd; int main(int argc, char *argv[]) { extern char *optarg; extern int optind; struct protoent *p; struct protox *tp = NULL; /* for printing cblocks & stats */ int ch; char *nlistf = NULL, *memf = NULL, *ep; char buf[_POSIX2_LINE_MAX]; gid_t gid; u_long pcbaddr = 0; af = AF_UNSPEC; while ((ch = getopt(argc, argv, "Aabdf:gI:ilM:mN:np:P:qrstuvW:w:")) != -1) switch (ch) { case 'A': Aflag = 1; break; case 'a': aflag = 1; break; case 'b': bflag = 1; break; case 'd': dflag = 1; break; case 'f': if (strcmp(optarg, "inet") == 0) af = AF_INET; else if (strcmp(optarg, "inet6") == 0) af = AF_INET6; else if (strcmp(optarg, "local") == 0) af = AF_LOCAL; else if (strcmp(optarg, "unix") == 0) af = AF_UNIX; else if (strcmp(optarg, "ipx") == 0) af = AF_IPX; else if (strcmp(optarg, "encap") == 0) af = PF_KEY; else if (strcmp(optarg, "atalk") == 0) af = AF_APPLETALK; else { (void)fprintf(stderr, "%s: %s: unknown address family\n", __progname, optarg); exit(1); } break; case 'g': gflag = 1; break; case 'I': iflag = 1; interface = optarg; break; case 'i': iflag = 1; break; case 'l': lflag = 1; break; case 'M': memf = optarg; break; case 'm': mflag = 1; break; case 'N': nlistf = optarg; break; case 'n': nflag = 1; break; case 'p': if ((tp = name2protox(optarg)) == NULL) { (void)fprintf(stderr, "%s: %s: unknown protocol\n", __progname, optarg); exit(1); } pflag = 1; break; case 'P': errno = 0; pcbaddr = strtoul(optarg, &ep, 16); if (optarg[0] == '\0' || *ep != '\0' || errno == ERANGE) { (void)fprintf(stderr, "%s: %s: invalid PCB address\n", __progname, optarg); exit(1); } Pflag = 1; break; case 'q': qflag = 1; break; case 'r': rflag = 1; break; case 's': ++sflag; break; case 't': tflag = 1; break; case 'u': af = AF_UNIX; break; case 'v': vflag = 1; break; case 'W': Wflag = 1; interface = optarg; break; case 'w': interval = atoi(optarg); iflag = 1; break; case '?': default: usage(); } argv += optind; argc -= optind; /* * Show per-interface statistics which don't need access to * kernel memory (they're using IOCTLs) */ if (Wflag) { if (interface == NULL) usage(); net80211_ifstats(interface); exit(0); } /* * Discard setgid privileges if not the running kernel so that bad * guys can't print interesting stuff from kernel memory. * Dumping PCB info is also restricted. */ gid = getgid(); if (nlistf != NULL || memf != NULL || Pflag) if (setresgid(gid, gid, gid) == -1) err(1, "setresgid"); if (nlistf == NULL && memf == NULL && rflag && !Aflag) { /* printing the routing table no longer needs kvm */ if (setresgid(gid, gid, gid) == -1) err(1, "setresgid"); if (sflag) rt_stats(1, 0); else p_rttables(af); exit(0); } if ((kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == NULL) { fprintf(stderr, "%s: kvm_open: %s\n", __progname, buf); exit(1); } if (nlistf == NULL && memf == NULL && !Pflag) if (setresgid(gid, gid, gid) == -1) err(1, "setresgid"); #define BACKWARD_COMPATIBILITY #ifdef BACKWARD_COMPATIBILITY if (*argv) { if (isdigit(**argv)) { interval = atoi(*argv); if (interval <= 0) usage(); ++argv; iflag = 1; } if (*argv) { nlistf = *argv; if (*++argv) memf = *argv; } } #endif if (kvm_nlist(kvmd, nl) < 0 || nl[0].n_type == 0) { if (nlistf) fprintf(stderr, "%s: %s: no namelist\n", __progname, nlistf); else fprintf(stderr, "%s: no namelist\n", __progname); exit(1); } if (mflag) { mbpr(nl[N_MBSTAT].n_value, nl[N_MBPOOL].n_value, nl[N_MCLPOOL].n_value); exit(0); } if (pflag) { printproto(tp, tp->pr_name); exit(0); } if (Pflag) { if (tp == NULL && (tp = name2protox("tcp")) == NULL) { (void)fprintf(stderr, "%s: %s: unknown protocol\n", __progname, "tcp"); exit(1); } if (tp->pr_dump) (tp->pr_dump)(pcbaddr); exit(0); } /* * Keep file descriptors open to avoid overhead * of open/close on each call to get* routines. */ sethostent(1); setnetent(1); if (iflag) { intpr(interval, nl[N_IFNET].n_value); exit(0); } if (rflag) { if (sflag) rt_stats(0, nl[N_RTSTAT].n_value); else routepr(nl[N_RTREE].n_value); exit(0); } if (gflag) { if (sflag) { if (af == AF_INET || af == AF_UNSPEC) mrt_stats(nl[N_MRTPROTO].n_value, nl[N_MRTSTAT].n_value); #ifdef INET6 if (af == AF_INET6 || af == AF_UNSPEC) mrt6_stats(nl[N_MRT6PROTO].n_value, nl[N_MRT6STAT].n_value); #endif } else { if (af == AF_INET || af == AF_UNSPEC) mroutepr(nl[N_MRTPROTO].n_value, nl[N_MFCHASHTBL].n_value, nl[N_MFCHASH].n_value, nl[N_VIFTABLE].n_value); #ifdef INET6 if (af == AF_INET6 || af == AF_UNSPEC) mroute6pr(nl[N_MRT6PROTO].n_value, nl[N_MF6CTABLE].n_value, nl[N_MIF6TABLE].n_value); #endif } exit(0); } if (af == AF_INET || af == AF_UNSPEC) { setprotoent(1); setservent(1); /* ugh, this is O(MN) ... why do we do this? */ while ((p = getprotoent())) { for (tp = protox; tp->pr_name; tp++) if (strcmp(tp->pr_name, p->p_name) == 0) break; if (tp->pr_name == 0 || tp->pr_wanted == 0) continue; printproto(tp, p->p_name); } endprotoent(); } #ifdef INET6 if (af == AF_INET6 || af == AF_UNSPEC) for (tp = ip6protox; tp->pr_name; tp++) printproto(tp, tp->pr_name); #endif if (af == AF_IPX || af == AF_UNSPEC) for (tp = ipxprotox; tp->pr_name; tp++) printproto(tp, tp->pr_name); if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag) unixpr(nl[N_UNIXSW].n_value); if (af == AF_APPLETALK || af == AF_UNSPEC) for (tp = atalkprotox; tp->pr_name; tp++) printproto(tp, tp->pr_name); exit(0); } /* * Print out protocol statistics or control blocks (per sflag). * If the interface was not specifically requested, and the symbol * is not in the namelist, ignore this one. */ static void printproto(struct protox *tp, char *name) { void (*pr)(u_long, char *); u_char i; if (sflag) { pr = tp->pr_stats; i = tp->pr_sindex; } else { pr = tp->pr_cblocks; i = tp->pr_index; } if (pr != NULL && i < sizeof(nl) / sizeof(nl[0]) && (nl[i].n_value || af != AF_UNSPEC)) (*pr)(nl[i].n_value, name); } /* * Read kernel memory, return 0 on success. */ int kread(u_long addr, void *buf, int size) { if (kvm_read(kvmd, addr, buf, size) != size) { (void)fprintf(stderr, "%s: %s\n", __progname, kvm_geterr(kvmd)); return (-1); } return (0); } char * plural(int n) { return (n != 1 ? "s" : ""); } char * plurales(int n) { return (n != 1 ? "es" : ""); } /* * Find the protox for the given "well-known" name. */ static struct protox * knownname(char *name) { struct protox **tpp, *tp; for (tpp = protoprotox; *tpp; tpp++) for (tp = *tpp; tp->pr_name; tp++) if (strcmp(tp->pr_name, name) == 0) return (tp); return (NULL); } /* * Find the protox corresponding to name. */ static struct protox * name2protox(char *name) { struct protox *tp; char **alias; /* alias from p->aliases */ struct protoent *p; /* * Try to find the name in the list of "well-known" names. If that * fails, check if name is an alias for an Internet protocol. */ if ((tp = knownname(name))) return (tp); setprotoent(1); /* make protocol lookup cheaper */ while ((p = getprotoent())) { /* assert: name not same as p->name */ for (alias = p->p_aliases; *alias; alias++) if (strcmp(name, *alias) == 0) { endprotoent(); return (knownname(p->p_name)); } } endprotoent(); return (NULL); } static void usage(void) { (void)fprintf(stderr, "usage: %s [-Aan] [-f address_family] [-M core] [-N system]\n" " %s [-bdgilmnqrstu] [-f address_family] [-M core] [-N system]\n" " %s [-bdn] [-I interface] [-M core] [-N system] [-w wait]\n" " %s [-M core] [-N system] -P pcbaddr\n" " %s [-s] [-M core] [-N system] [-p protocol]\n" " %s [-a] [-f address_family] [-i | -I interface]\n" " %s [-W interface]\n", __progname, __progname, __progname, __progname, __progname, __progname, __progname); exit(1); }