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- /*
- * Copyright (c) 1983, 1988 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
- #ifndef lint
- char copyright[] =
- "@(#) Copyright (c) 1983, 1988 Regents of the University of California.\n\
- All rights reserved.\n";
- #endif /* not lint */
-
- #ifndef lint
- static char sccsid[] = "@(#)main.c 5.23 (Berkeley) 7/1/91";
- #endif /* not lint */
-
- #include <sys/param.h>
- #include <sys/socket.h>
- #include <sys/file.h>
- #include <errno.h>
- #include <netdb.h>
- #include <nlist.h>
- #include <kvm.h>
- #include <stdio.h>
- #include <ctype.h>
- #include <stdlib.h>
- #include <string.h>
- #include <paths.h>
-
- struct nlist nl[] = {
- #define N_MBSTAT 0
- { "_mbstat" },
- #define N_IPSTAT 1
- { "_ipstat" },
- #define N_TCB 2
- { "_tcb" },
- #define N_TCPSTAT 3
- { "_tcpstat" },
- #define N_UDB 4
- { "_udb" },
- #define N_UDPSTAT 5
- { "_udpstat" },
- #define N_IFNET 6
- { "_ifnet" },
- #define N_IMP 7
- { "_imp_softc" },
- #define N_RTHOST 8
- { "_rthost" },
- #define N_RTNET 9
- { "_rtnet" },
- #define N_ICMPSTAT 10
- { "_icmpstat" },
- #define N_RTSTAT 11
- { "_rtstat" },
- #define N_NFILE 12
- { "_nfile" },
- #define N_FILE 13
- { "_file" },
- #define N_UNIXSW 14
- { "_unixsw" },
- #define N_RTHASHSIZE 15
- { "_rthashsize" },
- #define N_IDP 16
- { "_nspcb"},
- #define N_IDPSTAT 17
- { "_idpstat"},
- #define N_SPPSTAT 18
- { "_spp_istat"},
- #define N_NSERR 19
- { "_ns_errstat"},
- #define N_CLNPSTAT 20
- { "_clnp_stat"},
- #define IN_TP 21
- { "_tp_inpcb" },
- #define ISO_TP 22
- { "_tp_isopcb" },
- #define N_TPSTAT 23
- { "_tp_stat" },
- #define N_ESISSTAT 24
- { "_esis_stat"},
- #define N_NIMP 25
- { "_nimp"},
- #define N_RTREE 26
- { "_radix_node_head"},
- #define N_CLTP 27
- { "_cltb"},
- #define N_CLTPSTAT 28
- { "_cltpstat"},
- "",
- };
-
- /* internet protocols */
- extern int protopr();
- extern int tcp_stats(), udp_stats(), ip_stats(), icmp_stats();
- /* ns protocols */
- extern int nsprotopr();
- extern int spp_stats(), idp_stats(), nserr_stats();
- /* iso protocols */
- extern int iso_protopr();
- extern int tp_stats(), esis_stats(), clnp_stats(), cltp_stats();
-
- 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 */
- int (*pr_cblocks)(); /* control blocks printing routine */
- int (*pr_stats)(); /* statistics printing routine */
- char *pr_name; /* well-known name */
- } protox[] = {
- { N_TCB, N_TCPSTAT, 1, protopr,
- tcp_stats, "tcp" },
- { N_UDB, N_UDPSTAT, 1, protopr,
- udp_stats, "udp" },
- { IN_TP, N_TPSTAT, 1, protopr,
- tp_stats, "tpip" },
- { -1, N_IPSTAT, 1, 0,
- ip_stats, "ip" },
- { -1, N_ICMPSTAT, 1, 0,
- icmp_stats, "icmp" },
- { -1, -1, 0, 0,
- 0, 0 }
- };
-
- struct protox nsprotox[] = {
- { N_IDP, N_IDPSTAT, 1, nsprotopr,
- idp_stats, "idp" },
- { N_IDP, N_SPPSTAT, 1, nsprotopr,
- spp_stats, "spp" },
- { -1, N_NSERR, 1, 0,
- nserr_stats, "ns_err" },
- { -1, -1, 0, 0,
- 0, 0 }
- };
-
- struct protox isoprotox[] = {
- { ISO_TP, N_TPSTAT, 1, iso_protopr,
- tp_stats, "tp" },
- { N_CLTP, N_CLTPSTAT, 1, iso_protopr,
- cltp_stats, "cltp" },
- { -1, N_CLNPSTAT, 1, 0,
- clnp_stats, "clnp"},
- { -1, N_ESISSTAT, 1, 0,
- esis_stats, "esis"},
- { -1, -1, 0, 0,
- 0, 0 }
- };
-
- struct protox *protoprotox[] = { protox, nsprotox, isoprotox, NULL };
-
- char *vmunix = _PATH_UNIX;
- char *kmemf;
- int kmem;
- int kflag;
- int Aflag;
- int aflag;
- int hflag;
- int iflag;
- int mflag;
- int nflag;
- int pflag;
- int rflag;
- int sflag;
- int tflag;
- int dflag;
- int interval;
- char *interface;
- int unit;
-
- int af = AF_UNSPEC;
-
- main(argc, argv)
- int argc;
- char **argv;
- {
- extern char *optarg;
- extern int optind;
- register struct protoent *p;
- register struct protox *tp; /* for printing cblocks & stats */
- struct protox *name2protox(); /* for -p */
- int ch;
- void usage();
-
- while ((ch = getopt(argc, argv, "Aadf:hI:iM:mN:np:rstuw")) != EOF)
- switch((char)ch) {
- case 'A':
- Aflag = 1;
- break;
- case 'a':
- aflag = 1;
- break;
- case 'd':
- dflag = 1;
- break;
- case 'f':
- if (strcmp(optarg, "ns") == 0)
- af = AF_NS;
- else if (strcmp(optarg, "inet") == 0)
- af = AF_INET;
- else if (strcmp(optarg, "unix") == 0)
- af = AF_UNIX;
- else if (strcmp(optarg, "iso") == 0)
- af = AF_ISO;
- else {
- (void)fprintf(stderr,
- "%s: unknown address family\n", optarg);
- exit(1);
- }
- break;
- case 'h':
- hflag = 1;
- break;
- case 'I': {
- char *cp;
-
- iflag = 1;
- for (cp = interface = optarg; isalpha(*cp); cp++);
- unit = atoi(cp);
- *cp = '\0';
- break;
- }
- case 'i':
- iflag = 1;
- break;
- case 'M':
- kmemf = optarg;
- kflag = 1;
- break;
- case 'm':
- mflag = 1;
- break;
- case 'N':
- vmunix = optarg;
- break;
- case 'n':
- nflag = 1;
- break;
- case 'p':
- if ((tp = name2protox(optarg)) == NULL) {
- (void)fprintf(stderr,
- "%s: unknown or uninstrumented protocol\n",
- optarg);
- exit(1);
- }
- pflag = 1;
- break;
- case 'r':
- rflag = 1;
- break;
- case 's':
- sflag = 1;
- break;
- case 't':
- tflag = 1;
- break;
- case 'u':
- af = AF_UNIX;
- break;
- case 'w':
- interval = atoi(optarg);
- break;
- case '?':
- default:
- usage();
- }
- argv += optind;
- argc -= optind;
-
- #define BACKWARD_COMPATIBILITY
- #ifdef BACKWARD_COMPATIBILITY
- if (*argv) {
- if (isdigit(**argv)) {
- interval = atoi(*argv);
- if (interval <= 0)
- usage();
- ++argv;
- iflag = 1;
- }
- if (*argv) {
- vmunix = *argv;
- if (*++argv) {
- kmemf = *argv;
- kflag = 1;
- }
- }
- }
- #endif
- if (kvm_openfiles(vmunix, kmemf, NULL) == -1) {
- fprintf(stderr, "netstat: kvm_openfiles: %s\n", kvm_geterr());
- exit(1);
- }
- if (kvm_nlist(nl) < 0 || nl[0].n_type == 0) {
- fprintf(stderr, "%s: no namelist\n", vmunix);
- exit(1);
- }
- if (mflag) {
- mbpr((off_t)nl[N_MBSTAT].n_value);
- exit(0);
- }
- if (pflag) {
- if (tp->pr_stats)
- (*tp->pr_stats)(nl[tp->pr_sindex].n_value,
- tp->pr_name);
- else
- printf("%s: no stats routine\n", tp->pr_name);
- exit(0);
- }
- if (hflag) {
- hostpr(nl[N_IMP].n_value, nl[N_NIMP].n_value);
- 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((off_t)nl[N_RTSTAT].n_value);
- else
- routepr((off_t)nl[N_RTHOST].n_value,
- (off_t)nl[N_RTNET].n_value,
- (off_t)nl[N_RTHASHSIZE].n_value,
- (off_t)nl[N_RTREE].n_value);
- exit(0);
- }
- if (af == AF_INET || af == AF_UNSPEC) {
- setprotoent(1);
- setservent(1);
- 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;
- if (sflag) {
- if (tp->pr_stats)
- (*tp->pr_stats)(nl[tp->pr_sindex].n_value,
- p->p_name);
- } else
- if (tp->pr_cblocks)
- (*tp->pr_cblocks)(nl[tp->pr_index].n_value,
- p->p_name);
- }
- endprotoent();
- }
- if (af == AF_NS || af == AF_UNSPEC) {
- for (tp = nsprotox; tp->pr_name; tp++) {
- if (sflag) {
- if (tp->pr_stats)
- (*tp->pr_stats)(nl[tp->pr_sindex].n_value,
- tp->pr_name);
- } else
- if (tp->pr_cblocks)
- (*tp->pr_cblocks)(nl[tp->pr_index].n_value,
- tp->pr_name);
- }
- }
- if (af == AF_ISO || af == AF_UNSPEC) {
- for (tp = isoprotox; tp->pr_name; tp++) {
- if (sflag) {
- if (tp->pr_stats)
- (*tp->pr_stats)(nl[tp->pr_sindex].n_value,
- tp->pr_name);
- } else
- if (tp->pr_cblocks)
- (*tp->pr_cblocks)(nl[tp->pr_index].n_value,
- tp->pr_name);
- }
- }
- if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag)
- unixpr((off_t)nl[N_NFILE].n_value, (off_t)nl[N_FILE].n_value,
- (struct protosw *)nl[N_UNIXSW].n_value);
- if (af == AF_UNSPEC && sflag)
- impstats(nl[N_IMP].n_value, nl[N_NIMP].n_value);
- exit(0);
- }
-
- char *
- plural(n)
- int n;
- {
- return (n != 1 ? "s" : "");
- }
-
- /*
- * Find the protox for the given "well-known" name.
- */
- struct protox *
- knownname(name)
- 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.
- */
- struct protox *
- name2protox(name)
- 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);
- }
-
- void
- usage()
- {
- (void)fprintf(stderr,
- "usage: netstat [-Aan] [-f address_family] [-M core] [-N system]\n");
- (void)fprintf(stderr,
- " [-himnrs] [-f address_family] [-M core] [-N system]\n");
- (void)fprintf(stderr,
- " [-n] [-I interface] [-M core] [-N system] [-w wait]\n");
- (void)fprintf(stderr,
- " [-M core] [-N system] [-p protocol]\n");
- exit(1);
- }
-