707 lines
17 KiB
C
707 lines
17 KiB
C
/*
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* Copyright (c) 1983, 1988, 1993
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* Regents of the University of California. 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 const copyright[] =
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"@(#) Copyright (c) 1983, 1988, 1993\n\
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Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#if 0
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#ifndef lint
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static char sccsid[] = "@(#)main.c 8.4 (Berkeley) 3/1/94";
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#endif /* not lint */
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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/file.h>
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#include <sys/protosw.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <netgraph/ng_socket.h>
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <kvm.h>
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#include <limits.h>
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#include <netdb.h>
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#include <nlist.h>
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#include <paths.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "netstat.h"
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static struct nlist nl[] = {
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#define N_IFNET 0
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{ "_ifnet" },
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#define N_RTSTAT 1
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{ "_rtstat" },
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#define N_RTREE 2
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{ "_rt_tables"},
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#define N_MRTSTAT 3
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{ "_mrtstat" },
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#define N_MFCTABLE 4
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{ "_mfctable" },
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#define N_VIFTABLE 5
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{ "_viftable" },
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#define N_IPX 6
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{ "_ipxpcb_list"},
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#define N_IPXSTAT 7
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{ "_ipxstat"},
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#define N_SPXSTAT 8
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{ "_spx_istat"},
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#define N_DDPSTAT 9
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{ "_ddpstat"},
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#define N_DDPCB 10
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{ "_ddpcb"},
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#define N_NGSOCKS 11
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{ "_ngsocklist"},
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#define N_IP6STAT 12
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{ "_ip6stat" },
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#define N_ICMP6STAT 13
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{ "_icmp6stat" },
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#define N_IPSECSTAT 14
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{ "_ipsecstat" },
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#define N_IPSEC6STAT 15
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{ "_ipsec6stat" },
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#define N_PIM6STAT 16
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{ "_pim6stat" },
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#define N_MRT6STAT 17
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{ "_mrt6stat" },
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#define N_MF6CTABLE 18
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{ "_mf6ctable" },
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#define N_MIF6TABLE 19
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{ "_mif6table" },
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#define N_PFKEYSTAT 20
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{ "_pfkeystat" },
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#define N_MBSTAT 21
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{ "_mbstat" },
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#define N_MBTYPES 22
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{ "_mbtypes" },
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#define N_NMBCLUSTERS 23
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{ "_nmbclusters" },
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#define N_NMBUFS 24
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{ "_nmbufs" },
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#define N_MBHI 25
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{ "_mbuf_hiwm" },
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#define N_CLHI 26
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{ "_clust_hiwm" },
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#define N_NCPUS 27
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{ "_smp_cpus" },
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#define N_PAGESZ 28
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{ "_pagesize" },
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#define N_MBPSTAT 29
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{ "_mb_statpcpu" },
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#define N_RTTRASH 30
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{ "_rttrash" },
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#define N_MBLO 31
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{ "_mbuf_lowm" },
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#define N_CLLO 32
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{ "_clust_lowm" },
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#define N_CARPSTAT 33
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{ "_carpstats" },
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#define N_PFSYNCSTAT 34
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{ "_pfsyncstats" },
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{ "" },
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};
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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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void (*pr_cblocks)(u_long, const char *, int);
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/* control blocks printing routine */
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void (*pr_stats)(u_long, const char *, int);
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/* statistics printing routine */
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void (*pr_istats)(char *); /* per/if statistics printing routine */
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const char *pr_name; /* well-known name */
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u_long pr_usesysctl; /* non-zero if we use sysctl, not kvm */
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} protox[] = {
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{ -1, -1, 1, protopr,
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tcp_stats, NULL, "tcp", IPPROTO_TCP },
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{ -1, -1, 1, protopr,
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udp_stats, NULL, "udp", IPPROTO_UDP },
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{ -1, -1, 1, protopr,
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NULL, NULL, "divert",IPPROTO_DIVERT },
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{ -1, -1, 1, protopr,
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ip_stats, NULL, "ip", IPPROTO_RAW },
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{ -1, -1, 1, protopr,
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icmp_stats, NULL, "icmp", IPPROTO_ICMP },
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{ -1, -1, 1, protopr,
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igmp_stats, NULL, "igmp", IPPROTO_IGMP },
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#ifdef IPSEC
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{ -1, N_IPSECSTAT, 1, NULL,
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ipsec_stats, NULL, "ipsec", 0},
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#endif
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{ -1, -1, 1, NULL,
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bdg_stats, NULL, "bdg", 1 /* bridging... */ },
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{ -1, -1, 1, protopr,
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pim_stats, NULL, "pim", IPPROTO_PIM },
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{ -1, N_CARPSTAT, 1, 0,
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carp_stats, NULL, "carp", 0},
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{ -1, -1, 1, NULL,
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pfsync_stats, NULL, "pfsync", 1},
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{ -1, -1, 0, NULL,
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NULL, NULL, NULL, 0 }
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};
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#ifdef INET6
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struct protox ip6protox[] = {
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{ -1, -1, 1, protopr,
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tcp_stats, NULL, "tcp", IPPROTO_TCP },
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{ -1, -1, 1, protopr,
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udp_stats, NULL, "udp", IPPROTO_UDP },
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{ -1, N_IP6STAT, 1, protopr,
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ip6_stats, ip6_ifstats, "ip6", IPPROTO_RAW },
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{ -1, N_ICMP6STAT, 1, protopr,
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icmp6_stats, icmp6_ifstats, "icmp6",IPPROTO_ICMPV6 },
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#ifdef IPSEC
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{ -1, N_IPSEC6STAT, 1, NULL,
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ipsec_stats, NULL, "ipsec6",0 },
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#endif
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#ifdef notyet
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{ -1, N_PIM6STAT, 1, NULL,
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pim6_stats, NULL, "pim6", 0 },
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#endif
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{ -1, -1, 1, NULL,
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rip6_stats, NULL, "rip6", 0 },
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{ -1, -1, 1, NULL,
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bdg_stats, NULL, "bdg", 1 /* bridging... */ },
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{ -1, -1, 0, NULL,
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NULL, NULL, NULL, 0 }
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};
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#endif /*INET6*/
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#ifdef IPSEC
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struct protox pfkeyprotox[] = {
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{ -1, N_PFKEYSTAT, 1, NULL,
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pfkey_stats, NULL, "pfkey", 0 },
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{ -1, -1, 0, NULL,
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NULL, NULL, NULL, 0 }
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};
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#endif
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struct protox atalkprotox[] = {
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{ N_DDPCB, N_DDPSTAT, 1, atalkprotopr,
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ddp_stats, NULL, "ddp", 0 },
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{ -1, -1, 0, NULL,
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NULL, NULL, NULL, 0 }
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};
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struct protox netgraphprotox[] = {
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{ N_NGSOCKS, -1, 1, netgraphprotopr,
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NULL, NULL, "ctrl", 0 },
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{ N_NGSOCKS, -1, 1, netgraphprotopr,
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NULL, NULL, "data", 0 },
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{ -1, -1, 0, NULL,
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NULL, NULL, NULL, 0 }
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};
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struct protox ipxprotox[] = {
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{ N_IPX, N_IPXSTAT, 1, ipxprotopr,
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ipx_stats, NULL, "ipx", 0 },
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{ N_IPX, N_SPXSTAT, 1, ipxprotopr,
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spx_stats, NULL, "spx", 0 },
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{ -1, -1, 0, NULL,
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NULL, NULL, 0, 0 }
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};
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struct protox *protoprotox[] = {
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protox,
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#ifdef INET6
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ip6protox,
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#endif
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#ifdef IPSEC
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pfkeyprotox,
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#endif
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ipxprotox, atalkprotox, NULL };
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const char *pluralies(int);
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static void printproto(struct protox *, const char *);
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static void usage(void);
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static struct protox *name2protox(char *);
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static struct protox *knownname(char *);
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static kvm_t *kvmd;
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static char *nlistf = NULL, *memf = NULL;
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int Aflag; /* show addresses of protocol control block */
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int aflag; /* show all sockets (including servers) */
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int bflag; /* show i/f total bytes in/out */
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int dflag; /* show i/f dropped packets */
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int gflag; /* show group (multicast) routing or stats */
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int iflag; /* show interfaces */
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int Lflag; /* show size of listen queues */
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int mflag; /* show memory stats */
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int numeric_addr; /* show addresses numerically */
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int numeric_port; /* show ports numerically */
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static int pflag; /* show given protocol */
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int rflag; /* show routing tables (or routing stats) */
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int sflag; /* show protocol statistics */
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int tflag; /* show i/f watchdog timers */
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int Wflag; /* wide display */
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int zflag; /* zero stats */
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int interval; /* repeat interval for i/f stats */
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char *interface; /* desired i/f for stats, or NULL for all i/fs */
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int unit; /* unit number for above */
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int af; /* address family */
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int
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main(int argc, char *argv[])
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{
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struct protox *tp = NULL; /* for printing cblocks & stats */
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int ch;
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af = AF_UNSPEC;
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while ((ch = getopt(argc, argv, "Aabdf:gI:iLlM:mN:np:rSstuWw:z")) != -1)
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switch(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 'b':
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bflag = 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, "ipx") == 0)
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af = AF_IPX;
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else if (strcmp(optarg, "inet") == 0)
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af = AF_INET;
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#ifdef INET6
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else if (strcmp(optarg, "inet6") == 0)
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af = AF_INET6;
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#endif /*INET6*/
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#ifdef INET6
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else if (strcmp(optarg, "pfkey") == 0)
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af = PF_KEY;
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#endif /*INET6*/
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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, "atalk") == 0)
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af = AF_APPLETALK;
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else if (strcmp(optarg, "ng") == 0
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|| strcmp(optarg, "netgraph") == 0)
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af = AF_NETGRAPH;
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else if (strcmp(optarg, "link") == 0)
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af = AF_LINK;
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else {
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errx(1, "%s: unknown address family", optarg);
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}
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break;
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case 'g':
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gflag = 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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continue;
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unit = atoi(cp);
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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 'L':
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Lflag = 1;
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break;
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case 'M':
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memf = optarg;
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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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nlistf = optarg;
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break;
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case 'n':
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numeric_addr = numeric_port = 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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errx(1,
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"%s: unknown or uninstrumented protocol",
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optarg);
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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;
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break;
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case 'S':
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numeric_addr = 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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case 'l':
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Wflag = 1;
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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 'z':
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zflag = 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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nlistf = *argv;
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if (*++argv)
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memf = *argv;
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}
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}
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#endif
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/*
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* Discard setgid privileges if not the running kernel so that bad
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* guys can't print interesting stuff from kernel memory.
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*/
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if (nlistf != NULL || memf != NULL)
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setgid(getgid());
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if (mflag) {
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if (memf != NULL) {
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if (kread(0, 0, 0) == 0)
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mbpr(nl[N_MBSTAT].n_value,
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nl[N_MBTYPES].n_value,
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nl[N_NMBCLUSTERS].n_value,
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nl[N_NMBUFS].n_value,
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nl[N_MBHI].n_value,
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nl[N_CLHI].n_value,
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nl[N_MBLO].n_value,
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nl[N_CLLO].n_value,
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nl[N_NCPUS].n_value,
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nl[N_PAGESZ].n_value,
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nl[N_MBPSTAT].n_value);
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} else
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mbpr(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
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exit(0);
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}
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#if 0
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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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#else
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/*
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* This does not make sense any more with DNS being default over
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* the files. Doing a setXXXXent(1) causes a tcp connection to be
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* used for the queries, which is slower.
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*/
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#endif
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if (iflag && !sflag) {
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kread(0, 0, 0);
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intpr(interval, nl[N_IFNET].n_value, NULL);
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exit(0);
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}
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if (rflag) {
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kread(0, 0, 0);
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if (sflag)
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rt_stats(nl[N_RTSTAT].n_value, nl[N_RTTRASH].n_value);
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else
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routepr(nl[N_RTREE].n_value);
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exit(0);
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}
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if (gflag) {
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kread(0, 0, 0);
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if (sflag) {
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if (af == AF_INET || af == AF_UNSPEC)
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mrt_stats(nl[N_MRTSTAT].n_value);
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#ifdef INET6
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if (af == AF_INET6 || af == AF_UNSPEC)
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mrt6_stats(nl[N_MRT6STAT].n_value);
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#endif
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} else {
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if (af == AF_INET || af == AF_UNSPEC)
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mroutepr(nl[N_MFCTABLE].n_value,
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nl[N_VIFTABLE].n_value);
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#ifdef INET6
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if (af == AF_INET6 || af == AF_UNSPEC)
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mroute6pr(nl[N_MF6CTABLE].n_value,
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nl[N_MIF6TABLE].n_value);
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#endif
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}
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ifmalist_dump();
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exit(0);
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}
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kread(0, 0, 0);
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if (tp) {
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printproto(tp, tp->pr_name);
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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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for (tp = protox; tp->pr_name; tp++)
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printproto(tp, tp->pr_name);
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#ifdef INET6
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if (af == AF_INET6 || af == AF_UNSPEC)
|
|
for (tp = ip6protox; tp->pr_name; tp++)
|
|
printproto(tp, tp->pr_name);
|
|
#endif /*INET6*/
|
|
#ifdef IPSEC
|
|
if (af == PF_KEY || af == AF_UNSPEC)
|
|
for (tp = pfkeyprotox; tp->pr_name; tp++)
|
|
printproto(tp, tp->pr_name);
|
|
#endif /*IPSEC*/
|
|
if (af == AF_IPX || af == AF_UNSPEC) {
|
|
kread(0, 0, 0);
|
|
for (tp = ipxprotox; tp->pr_name; tp++)
|
|
printproto(tp, tp->pr_name);
|
|
}
|
|
if (af == AF_APPLETALK || af == AF_UNSPEC)
|
|
for (tp = atalkprotox; tp->pr_name; tp++)
|
|
printproto(tp, tp->pr_name);
|
|
if (af == AF_NETGRAPH || af == AF_UNSPEC)
|
|
for (tp = netgraphprotox; tp->pr_name; tp++)
|
|
printproto(tp, tp->pr_name);
|
|
if ((af == AF_UNIX || af == AF_UNSPEC) && !Lflag && !sflag)
|
|
unixpr();
|
|
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(tp, name)
|
|
struct protox *tp;
|
|
const char *name;
|
|
{
|
|
void (*pr)(u_long, const char *, int);
|
|
u_long off;
|
|
|
|
if (sflag) {
|
|
if (iflag) {
|
|
if (tp->pr_istats)
|
|
intpr(interval, nl[N_IFNET].n_value,
|
|
tp->pr_istats);
|
|
else if (pflag)
|
|
printf("%s: no per-interface stats routine\n",
|
|
tp->pr_name);
|
|
return;
|
|
}
|
|
else {
|
|
pr = tp->pr_stats;
|
|
if (!pr) {
|
|
if (pflag)
|
|
printf("%s: no stats routine\n",
|
|
tp->pr_name);
|
|
return;
|
|
}
|
|
off = tp->pr_usesysctl ? tp->pr_usesysctl
|
|
: nl[tp->pr_sindex].n_value;
|
|
}
|
|
} else {
|
|
pr = tp->pr_cblocks;
|
|
if (!pr) {
|
|
if (pflag)
|
|
printf("%s: no PCB routine\n", tp->pr_name);
|
|
return;
|
|
}
|
|
off = tp->pr_usesysctl ? tp->pr_usesysctl
|
|
: nl[tp->pr_index].n_value;
|
|
}
|
|
if (pr != NULL && (off || af != AF_UNSPEC))
|
|
(*pr)(off, name, af);
|
|
}
|
|
|
|
/*
|
|
* Read kernel memory, return 0 on success.
|
|
*/
|
|
int
|
|
kread(u_long addr, char *buf, int size)
|
|
{
|
|
if (kvmd == 0) {
|
|
/*
|
|
* XXX.
|
|
*/
|
|
kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf);
|
|
setgid(getgid());
|
|
if (kvmd != NULL) {
|
|
if (kvm_nlist(kvmd, nl) < 0) {
|
|
if(nlistf)
|
|
errx(1, "%s: kvm_nlist: %s", nlistf,
|
|
kvm_geterr(kvmd));
|
|
else
|
|
errx(1, "kvm_nlist: %s", kvm_geterr(kvmd));
|
|
}
|
|
|
|
if (nl[0].n_type == 0) {
|
|
if(nlistf)
|
|
errx(1, "%s: no namelist", nlistf);
|
|
else
|
|
errx(1, "no namelist");
|
|
}
|
|
} else {
|
|
warnx("kvm not available");
|
|
return(-1);
|
|
}
|
|
}
|
|
if (!buf)
|
|
return (0);
|
|
if (kvm_read(kvmd, addr, buf, size) != size) {
|
|
warnx("%s", kvm_geterr(kvmd));
|
|
return (-1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
const char *
|
|
plural(int n)
|
|
{
|
|
return (n != 1 ? "s" : "");
|
|
}
|
|
|
|
const char *
|
|
plurales(int n)
|
|
{
|
|
return (n != 1 ? "es" : "");
|
|
}
|
|
|
|
const char *
|
|
pluralies(int n)
|
|
{
|
|
return (n != 1 ? "ies" : "y");
|
|
}
|
|
|
|
/*
|
|
* 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)) != NULL)
|
|
return (tp);
|
|
|
|
setprotoent(1); /* make protocol lookup cheaper */
|
|
while ((p = getprotoent()) != NULL) {
|
|
/* 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, "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n",
|
|
"usage: netstat [-AaLnSW] [-f protocol_family | -p protocol]\n"
|
|
" [-M core] [-N system]",
|
|
" netstat -i | -I interface [-abdnt] [-f address_family]\n"
|
|
" [-M core] [-N system]",
|
|
" netstat -w wait [-I interface] [-d] [-M core] [-N system]",
|
|
" netstat -s [-s] [-z] [-f protocol_family | -p protocol] [-M core]",
|
|
" netstat -i | -I interface -s [-f protocol_family | -p protocol]\n"
|
|
" [-M core] [-N system]",
|
|
" netstat -m [-M core] [-N system]",
|
|
" netstat -r [-AenW] [-f address_family] [-M core] [-N system]",
|
|
" netstat -rs [-s] [-M core] [-N system]",
|
|
" netstat -g [-W] [-f address_family] [-M core] [-N system]",
|
|
" netstat -gs [-s] [-f address_family] [-M core] [-N system]");
|
|
exit(1);
|
|
}
|