510 lines
11 KiB
C
510 lines
11 KiB
C
/*
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* Copyright (c) 1983, 1988 Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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char copyright[] =
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"@(#) Copyright (c) 1983, 1988 Regents of the University of California.\n\
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All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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/*static char sccsid[] = "from: @(#)main.c 5.23 (Berkeley) 7/1/91";*/
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static char rcsid[] = "$Id: main.c,v 1.3 1993/12/22 04:00:31 cgd Exp $";
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <sys/file.h>
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#include <errno.h>
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#include <netdb.h>
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#include <nlist.h>
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#include <kvm.h>
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#include <stdio.h>
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#include <ctype.h>
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#include <stdlib.h>
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#include <string.h>
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#include <paths.h>
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struct nlist nl[] = {
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#define N_MBSTAT 0
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{ "_mbstat" },
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#define N_IPSTAT 1
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{ "_ipstat" },
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#define N_TCB 2
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{ "_tcb" },
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#define N_TCPSTAT 3
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{ "_tcpstat" },
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#define N_UDB 4
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{ "_udb" },
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#define N_UDPSTAT 5
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{ "_udpstat" },
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#define N_IFNET 6
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{ "_ifnet" },
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#define N_IMP 7
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{ "_imp_softc" },
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#define N_RTHOST 8
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{ "_rthost" },
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#define N_RTNET 9
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{ "_rtnet" },
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#define N_ICMPSTAT 10
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{ "_icmpstat" },
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#define N_RTSTAT 11
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{ "_rtstat" },
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#define N_FILEHEAD 12
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{ "_filehead" },
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#define N_FILES 13
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{ "_nfiles" },
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#define N_UNIXSW 14
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{ "_unixsw" },
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#define N_RTHASHSIZE 15
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{ "_rthashsize" },
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#define N_IDP 16
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{ "_nspcb"},
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#define N_IDPSTAT 17
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{ "_idpstat"},
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#define N_SPPSTAT 18
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{ "_spp_istat"},
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#define N_NSERR 19
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{ "_ns_errstat"},
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#define N_CLNPSTAT 20
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{ "_clnp_stat"},
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#define IN_TP 21
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{ "_tp_inpcb" },
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#define ISO_TP 22
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{ "_tp_isopcb" },
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#define N_TPSTAT 23
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{ "_tp_stat" },
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#define N_ESISSTAT 24
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{ "_esis_stat"},
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#define N_NIMP 25
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{ "_nimp"},
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#define N_RTREE 26
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{ "_radix_node_head"},
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#define N_CLTP 27
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{ "_cltb"},
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#define N_CLTPSTAT 28
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{ "_cltpstat"},
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"",
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};
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/* internet protocols */
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extern int protopr();
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extern int tcp_stats(), udp_stats(), ip_stats(), icmp_stats();
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#ifdef NS
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/* ns protocols */
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extern int nsprotopr();
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extern int spp_stats(), idp_stats(), nserr_stats();
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#endif
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#ifdef ISO
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/* iso protocols */
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extern int iso_protopr();
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extern int tp_stats(), esis_stats(), clnp_stats(), cltp_stats();
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#endif
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struct protox {
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u_char pr_index; /* index into nlist of cb head */
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u_char pr_sindex; /* index into nlist of stat block */
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u_char pr_wanted; /* 1 if wanted, 0 otherwise */
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int (*pr_cblocks)(); /* control blocks printing routine */
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int (*pr_stats)(); /* statistics printing routine */
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char *pr_name; /* well-known name */
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} protox[] = {
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{ N_TCB, N_TCPSTAT, 1, protopr,
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tcp_stats, "tcp" },
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{ N_UDB, N_UDPSTAT, 1, protopr,
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udp_stats, "udp" },
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#ifdef ISO
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{ IN_TP, N_TPSTAT, 1, protopr,
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tp_stats, "tpip" },
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#endif
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{ -1, N_IPSTAT, 1, 0,
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ip_stats, "ip" },
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{ -1, N_ICMPSTAT, 1, 0,
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icmp_stats, "icmp" },
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{ -1, -1, 0, 0,
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0, 0 }
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};
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#ifdef NS
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struct protox nsprotox[] = {
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{ N_IDP, N_IDPSTAT, 1, nsprotopr,
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idp_stats, "idp" },
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{ N_IDP, N_SPPSTAT, 1, nsprotopr,
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spp_stats, "spp" },
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{ -1, N_NSERR, 1, 0,
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nserr_stats, "ns_err" },
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{ -1, -1, 0, 0,
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0, 0 }
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};
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#endif
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#ifdef ISO
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struct protox isoprotox[] = {
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{ ISO_TP, N_TPSTAT, 1, iso_protopr,
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tp_stats, "tp" },
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{ N_CLTP, N_CLTPSTAT, 1, iso_protopr,
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cltp_stats, "cltp" },
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{ -1, N_CLNPSTAT, 1, 0,
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clnp_stats, "clnp"},
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{ -1, N_ESISSTAT, 1, 0,
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esis_stats, "esis"},
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{ -1, -1, 0, 0,
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0, 0 }
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};
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#endif
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struct protox *protoprotox[] = { protox,
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#ifdef NS
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nsprotox,
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#endif
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#ifdef ISO
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isoprotox,
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#endif
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NULL };
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char *vmunix = _PATH_UNIX;
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char *kmemf;
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int kmem;
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int kflag;
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int Aflag;
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int aflag;
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int hflag;
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int iflag;
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int mflag;
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int nflag;
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int pflag;
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int rflag;
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int sflag;
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int tflag;
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int dflag;
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int interval;
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char *interface;
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int unit;
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int af = AF_UNSPEC;
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main(argc, argv)
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int argc;
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char **argv;
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{
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extern char *optarg;
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extern int optind;
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register struct protoent *p;
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register struct protox *tp; /* for printing cblocks & stats */
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struct protox *name2protox(); /* for -p */
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int ch;
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void usage();
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while ((ch = getopt(argc, argv, "Aadf:hI:iM:mN:np:rstuw:")) != EOF)
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switch((char)ch) {
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case 'A':
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Aflag = 1;
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break;
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case 'a':
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aflag = 1;
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break;
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case 'd':
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dflag = 1;
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break;
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case 'f':
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if (strcmp(optarg, "ns") == 0)
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af = AF_NS;
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else if (strcmp(optarg, "inet") == 0)
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af = AF_INET;
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else if (strcmp(optarg, "unix") == 0)
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af = AF_UNIX;
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else if (strcmp(optarg, "iso") == 0)
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af = AF_ISO;
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else {
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(void)fprintf(stderr,
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"%s: unknown address family\n", optarg);
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exit(1);
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}
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break;
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case 'h':
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hflag = 1;
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break;
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case 'I': {
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char *cp;
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iflag = 1;
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for (cp = interface = optarg; isalpha(*cp); cp++);
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unit = atoi(cp);
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*cp = '\0';
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break;
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}
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case 'i':
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iflag = 1;
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break;
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case 'M':
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kmemf = optarg;
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kflag = 1;
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break;
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case 'm':
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mflag = 1;
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break;
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case 'N':
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vmunix = optarg;
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break;
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case 'n':
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nflag = 1;
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break;
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case 'p':
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if ((tp = name2protox(optarg)) == NULL) {
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(void)fprintf(stderr,
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"%s: unknown or uninstrumented protocol\n",
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optarg);
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exit(1);
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}
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pflag = 1;
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break;
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case 'r':
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rflag = 1;
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break;
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case 's':
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sflag = 1;
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break;
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case 't':
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tflag = 1;
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break;
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case 'u':
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af = AF_UNIX;
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break;
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case 'w':
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interval = atoi(optarg);
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iflag = 1;
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break;
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case '?':
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default:
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usage();
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}
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argv += optind;
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argc -= optind;
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#define BACKWARD_COMPATIBILITY
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#ifdef BACKWARD_COMPATIBILITY
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if (*argv) {
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if (isdigit(**argv)) {
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interval = atoi(*argv);
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if (interval <= 0)
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usage();
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++argv;
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iflag = 1;
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}
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if (*argv) {
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vmunix = *argv;
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if (*++argv) {
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kmemf = *argv;
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kflag = 1;
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}
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}
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}
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#endif
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if (kvm_openfiles(vmunix, kmemf, NULL) == -1) {
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fprintf(stderr, "netstat: kvm_openfiles: %s\n", kvm_geterr());
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exit(1);
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}
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if (kvm_nlist(nl) < 0 || nl[0].n_type == 0) {
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fprintf(stderr, "%s: no namelist\n", vmunix);
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exit(1);
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}
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if (mflag) {
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mbpr((off_t)nl[N_MBSTAT].n_value);
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exit(0);
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}
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if (pflag) {
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if (tp->pr_stats)
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(*tp->pr_stats)(nl[tp->pr_sindex].n_value,
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tp->pr_name);
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else
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printf("%s: no stats routine\n", tp->pr_name);
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exit(0);
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}
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if (hflag) {
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#ifdef IMP
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hostpr(nl[N_IMP].n_value, nl[N_NIMP].n_value);
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#else
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(void)fprintf(stderr, "netstat: IMP code not compiled in\n");
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#endif
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exit(0);
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}
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/*
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* Keep file descriptors open to avoid overhead
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* of open/close on each call to get* routines.
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*/
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sethostent(1);
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setnetent(1);
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if (iflag) {
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intpr(interval, nl[N_IFNET].n_value);
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exit(0);
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}
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if (rflag) {
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if (sflag)
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rt_stats((off_t)nl[N_RTSTAT].n_value);
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else
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routepr((off_t)nl[N_RTHOST].n_value,
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(off_t)nl[N_RTNET].n_value,
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(off_t)nl[N_RTHASHSIZE].n_value,
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(off_t)nl[N_RTREE].n_value);
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exit(0);
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}
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if (af == AF_INET || af == AF_UNSPEC) {
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setprotoent(1);
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setservent(1);
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while (p = getprotoent()) {
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for (tp = protox; tp->pr_name; tp++)
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if (strcmp(tp->pr_name, p->p_name) == 0)
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break;
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if (tp->pr_name == 0 || tp->pr_wanted == 0)
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continue;
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if (sflag) {
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if (tp->pr_stats)
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(*tp->pr_stats)(nl[tp->pr_sindex].n_value,
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p->p_name);
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} else
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if (tp->pr_cblocks)
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(*tp->pr_cblocks)(nl[tp->pr_index].n_value,
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p->p_name);
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}
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endprotoent();
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}
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if (af == AF_NS || af == AF_UNSPEC) {
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#ifdef NS
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for (tp = nsprotox; tp->pr_name; tp++) {
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if (sflag) {
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if (tp->pr_stats)
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(*tp->pr_stats)(nl[tp->pr_sindex].n_value,
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tp->pr_name);
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} else
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if (tp->pr_cblocks)
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(*tp->pr_cblocks)(nl[tp->pr_index].n_value,
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tp->pr_name);
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}
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#endif
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}
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if (af == AF_ISO || af == AF_UNSPEC) {
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#ifdef ISO
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for (tp = isoprotox; tp->pr_name; tp++) {
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if (sflag) {
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if (tp->pr_stats)
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(*tp->pr_stats)(nl[tp->pr_sindex].n_value,
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tp->pr_name);
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} else
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if (tp->pr_cblocks)
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(*tp->pr_cblocks)(nl[tp->pr_index].n_value,
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tp->pr_name);
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}
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#endif
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}
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if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag)
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unixpr((off_t)nl[N_FILEHEAD].n_value, (off_t)nl[N_FILES].n_value,
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(struct protosw *)nl[N_UNIXSW].n_value);
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if (af == AF_UNSPEC && sflag)
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#ifdef IMP
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impstats(nl[N_IMP].n_value, nl[N_NIMP].n_value);
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#endif
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exit(0);
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}
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char *
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plural(n)
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int n;
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{
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return (n != 1 ? "s" : "");
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}
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/*
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* Find the protox for the given "well-known" name.
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*/
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struct protox *
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knownname(name)
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char *name;
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{
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struct protox **tpp, *tp;
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for (tpp = protoprotox; *tpp; tpp++)
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for (tp = *tpp; tp->pr_name; tp++)
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if (strcmp(tp->pr_name, name) == 0)
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return(tp);
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return(NULL);
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}
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/*
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* Find the protox corresponding to name.
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*/
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struct protox *
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name2protox(name)
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char *name;
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{
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struct protox *tp;
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char **alias; /* alias from p->aliases */
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struct protoent *p;
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/*
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* Try to find the name in the list of "well-known" names. If that
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* fails, check if name is an alias for an Internet protocol.
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*/
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if (tp = knownname(name))
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return(tp);
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setprotoent(1); /* make protocol lookup cheaper */
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while (p = getprotoent()) {
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/* assert: name not same as p->name */
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for (alias = p->p_aliases; *alias; alias++)
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if (strcmp(name, *alias) == 0) {
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endprotoent();
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return(knownname(p->p_name));
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}
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}
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endprotoent();
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return(NULL);
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}
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void
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usage()
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{
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(void)fprintf(stderr,
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"usage: netstat [-Aan] [-f address_family] [-M core] [-N system]\n");
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(void)fprintf(stderr,
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" [-himnrs] [-f address_family] [-M core] [-N system]\n");
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(void)fprintf(stderr,
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" [-n] [-I interface] [-M core] [-N system] [-w wait]\n");
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(void)fprintf(stderr,
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" [-M core] [-N system] [-p protocol]\n");
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exit(1);
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}
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