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freebsd-skq/usr.bin/netstat/inet.c
Dag-Erling Smørgrav 080b7f4967 Add a -W flag that tells netstat not to truncate addresses even if they are 
too long for the column they're printed in.

Move variable definitions out of netstat.h and into main.c.

Clean up some warnings.
2001-03-15 20:46:04 +00:00

761 lines
22 KiB
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/*
* Copyright (c) 1983, 1988, 1993, 1995
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. 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
/*
static char sccsid[] = "@(#)inet.c 8.5 (Berkeley) 5/24/95";
*/
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/sysctl.h>
#include <sys/protosw.h>
#include <net/route.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#ifdef INET6
#include <netinet/ip6.h>
#endif /* INET6 */
#include <netinet/in_pcb.h>
#include <netinet/ip_icmp.h>
#include <netinet/icmp_var.h>
#include <netinet/igmp_var.h>
#include <netinet/ip_var.h>
#include <netinet/tcp.h>
#include <netinet/tcpip.h>
#include <netinet/tcp_seq.h>
#define TCPSTATES
#include <netinet/tcp_fsm.h>
#include <netinet/tcp_timer.h>
#include <netinet/tcp_var.h>
#include <netinet/tcp_debug.h>
#include <netinet/udp.h>
#include <netinet/udp_var.h>
#include <arpa/inet.h>
#include <err.h>
#include <errno.h>
#include <libutil.h>
#include <netdb.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "netstat.h"
char *inetname __P((struct in_addr *));
void inetprint __P((struct in_addr *, int, char *, int));
#ifdef INET6
extern void inet6print __P((struct in6_addr *, int, char *, int));
static int udp_done, tcp_done;
#endif /* INET6 */
/*
* Print a summary of connections related to an Internet
* protocol. For TCP, also give state of connection.
* Listening processes (aflag) are suppressed unless the
* -a (all) flag is specified.
*/
void
protopr(proto, name, af)
u_long proto; /* for sysctl version we pass proto # */
char *name;
int af;
{
int istcp;
static int first = 1;
char *buf;
const char *mibvar;
struct tcpcb *tp = NULL;
struct inpcb *inp;
struct xinpgen *xig, *oxig;
struct xsocket *so;
size_t len;
istcp = 0;
switch (proto) {
case IPPROTO_TCP:
#ifdef INET6
if (tcp_done != 0)
return;
else
tcp_done = 1;
#endif
istcp = 1;
mibvar = "net.inet.tcp.pcblist";
break;
case IPPROTO_UDP:
#ifdef INET6
if (udp_done != 0)
return;
else
udp_done = 1;
#endif
mibvar = "net.inet.udp.pcblist";
break;
case IPPROTO_DIVERT:
mibvar = "net.inet.divert.pcblist";
break;
default:
mibvar = "net.inet.raw.pcblist";
break;
}
len = 0;
if (sysctlbyname(mibvar, 0, &len, 0, 0) < 0) {
if (errno != ENOENT)
warn("sysctl: %s", mibvar);
return;
}
if ((buf = malloc(len)) == 0) {
warn("malloc %lu bytes", (u_long)len);
return;
}
if (sysctlbyname(mibvar, buf, &len, 0, 0) < 0) {
warn("sysctl: %s", mibvar);
free(buf);
return;
}
oxig = xig = (struct xinpgen *)buf;
for (xig = (struct xinpgen *)((char *)xig + xig->xig_len);
xig->xig_len > sizeof(struct xinpgen);
xig = (struct xinpgen *)((char *)xig + xig->xig_len)) {
if (istcp) {
tp = &((struct xtcpcb *)xig)->xt_tp;
inp = &((struct xtcpcb *)xig)->xt_inp;
so = &((struct xtcpcb *)xig)->xt_socket;
} else {
inp = &((struct xinpcb *)xig)->xi_inp;
so = &((struct xinpcb *)xig)->xi_socket;
}
/* Ignore sockets for protocols other than the desired one. */
if (so->xso_protocol != proto)
continue;
/* Ignore PCBs which were freed during copyout. */
if (inp->inp_gencnt > oxig->xig_gen)
continue;
if ((af == AF_INET && (inp->inp_vflag & INP_IPV4) == 0)
#ifdef INET6
|| (af == AF_INET6 && (inp->inp_vflag & INP_IPV6) == 0)
#endif /* INET6 */
|| (af == AF_UNSPEC && ((inp->inp_vflag & INP_IPV4) == 0
#ifdef INET6
&& (inp->inp_vflag &
INP_IPV6) == 0
#endif /* INET6 */
))
)
continue;
if (!aflag &&
(
(af == AF_INET &&
inet_lnaof(inp->inp_laddr) == INADDR_ANY)
#ifdef INET6
|| (af == AF_INET6 &&
IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr))
#endif /* INET6 */
|| (af == AF_UNSPEC &&
(((inp->inp_vflag & INP_IPV4) != 0 &&
inet_lnaof(inp->inp_laddr) == INADDR_ANY)
#ifdef INET6
|| ((inp->inp_vflag & INP_IPV6) != 0 &&
IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr))
#endif
))
))
continue;
if (first) {
if (!Lflag) {
printf("Active Internet connections");
if (aflag)
printf(" (including servers)");
} else
printf(
"Current listen queue sizes (qlen/incqlen/maxqlen)");
putchar('\n');
if (Aflag)
printf("%-8.8s ", "Socket");
if (Lflag)
printf("%-14.14s %-22.22s\n",
"Listen", "Local Address");
else
printf((Aflag && !Wflag) ?
"%-5.5s %-6.6s %-6.6s %-18.18s %-18.18s %s\n" :
"%-5.5s %-6.6s %-6.6s %-22.22s %-22.22s %s\n",
"Proto", "Recv-Q", "Send-Q",
"Local Address", "Foreign Address",
"(state)");
first = 0;
}
if (Aflag) {
if (istcp)
printf("%8lx ", (u_long)inp->inp_ppcb);
else
printf("%8lx ", (u_long)so->so_pcb);
}
if (Lflag)
if (so->so_qlimit) {
char buf[15];
snprintf(buf, 15, "%d/%d/%d", so->so_qlen,
so->so_incqlen, so->so_qlimit);
printf("%-14.14s ", buf);
} else
continue;
else {
const char *vchar;
#ifdef INET6
if ((inp->inp_vflag & INP_IPV6) != 0)
vchar = ((inp->inp_vflag & INP_IPV4) != 0)
? "46" : "6 ";
else
#endif
vchar = ((inp->inp_vflag & INP_IPV4) != 0)
? "4 " : " ";
printf("%-3.3s%-2.2s %6ld %6ld ", name, vchar,
so->so_rcv.sb_cc,
so->so_snd.sb_cc);
}
if (nflag) {
if (inp->inp_vflag & INP_IPV4) {
inetprint(&inp->inp_laddr, (int)inp->inp_lport,
name, 1);
if (!Lflag)
inetprint(&inp->inp_faddr,
(int)inp->inp_fport, name, 1);
}
#ifdef INET6
else if (inp->inp_vflag & INP_IPV6) {
inet6print(&inp->in6p_laddr,
(int)inp->inp_lport, name, 1);
if (!Lflag)
inet6print(&inp->in6p_faddr,
(int)inp->inp_fport, name, 1);
} /* else nothing printed now */
#endif /* INET6 */
} else if (inp->inp_flags & INP_ANONPORT) {
if (inp->inp_vflag & INP_IPV4) {
inetprint(&inp->inp_laddr, (int)inp->inp_lport,
name, 1);
if (!Lflag)
inetprint(&inp->inp_faddr,
(int)inp->inp_fport, name, 0);
}
#ifdef INET6
else if (inp->inp_vflag & INP_IPV6) {
inet6print(&inp->in6p_laddr,
(int)inp->inp_lport, name, 1);
if (!Lflag)
inet6print(&inp->in6p_faddr,
(int)inp->inp_fport, name, 0);
} /* else nothing printed now */
#endif /* INET6 */
} else {
if (inp->inp_vflag & INP_IPV4) {
inetprint(&inp->inp_laddr, (int)inp->inp_lport,
name, 0);
if (!Lflag)
inetprint(&inp->inp_faddr,
(int)inp->inp_fport, name,
inp->inp_lport !=
inp->inp_fport);
}
#ifdef INET6
else if (inp->inp_vflag & INP_IPV6) {
inet6print(&inp->in6p_laddr,
(int)inp->inp_lport, name, 0);
if (!Lflag)
inet6print(&inp->in6p_faddr,
(int)inp->inp_fport, name,
inp->inp_lport !=
inp->inp_fport);
} /* else nothing printed now */
#endif /* INET6 */
}
if (istcp && !Lflag) {
if (tp->t_state < 0 || tp->t_state >= TCP_NSTATES)
printf("%d", tp->t_state);
else {
printf("%s", tcpstates[tp->t_state]);
#if defined(TF_NEEDSYN) && defined(TF_NEEDFIN)
/* Show T/TCP `hidden state' */
if (tp->t_flags & (TF_NEEDSYN|TF_NEEDFIN))
putchar('*');
#endif /* defined(TF_NEEDSYN) && defined(TF_NEEDFIN) */
}
}
putchar('\n');
}
if (xig != oxig && xig->xig_gen != oxig->xig_gen) {
if (oxig->xig_count > xig->xig_count) {
printf("Some %s sockets may have been deleted.\n",
name);
} else if (oxig->xig_count < xig->xig_count) {
printf("Some %s sockets may have been created.\n",
name);
} else {
printf("Some %s sockets may have been created or deleted",
name);
}
}
free(buf);
}
/*
* Dump TCP statistics structure.
*/
void
tcp_stats(off, name)
u_long off;
char *name;
{
struct tcpstat tcpstat;
size_t len = sizeof tcpstat;
if (sysctlbyname("net.inet.tcp.stats", &tcpstat, &len, 0, 0) < 0) {
warn("sysctl: net.inet.tcp.stats");
return;
}
#ifdef INET6
if (tcp_done != 0)
return;
else
tcp_done = 1;
#endif
printf ("%s:\n", name);
#define p(f, m) if (tcpstat.f || sflag <= 1) \
printf(m, tcpstat.f, plural(tcpstat.f))
#define p1a(f, m) if (tcpstat.f || sflag <= 1) \
printf(m, tcpstat.f)
#define p2(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1) \
printf(m, tcpstat.f1, plural(tcpstat.f1), tcpstat.f2, plural(tcpstat.f2))
#define p2a(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1) \
printf(m, tcpstat.f1, plural(tcpstat.f1), tcpstat.f2)
#define p3(f, m) if (tcpstat.f || sflag <= 1) \
printf(m, tcpstat.f, plurales(tcpstat.f))
p(tcps_sndtotal, "\t%lu packet%s sent\n");
p2(tcps_sndpack,tcps_sndbyte,
"\t\t%lu data packet%s (%lu byte%s)\n");
p2(tcps_sndrexmitpack, tcps_sndrexmitbyte,
"\t\t%lu data packet%s (%lu byte%s) retransmitted\n");
p(tcps_mturesent, "\t\t%lu resend%s initiated by MTU discovery\n");
p2a(tcps_sndacks, tcps_delack,
"\t\t%lu ack-only packet%s (%lu delayed)\n");
p(tcps_sndurg, "\t\t%lu URG only packet%s\n");
p(tcps_sndprobe, "\t\t%lu window probe packet%s\n");
p(tcps_sndwinup, "\t\t%lu window update packet%s\n");
p(tcps_sndctrl, "\t\t%lu control packet%s\n");
p(tcps_rcvtotal, "\t%lu packet%s received\n");
p2(tcps_rcvackpack, tcps_rcvackbyte, "\t\t%lu ack%s (for %lu byte%s)\n");
p(tcps_rcvdupack, "\t\t%lu duplicate ack%s\n");
p(tcps_rcvacktoomuch, "\t\t%lu ack%s for unsent data\n");
p2(tcps_rcvpack, tcps_rcvbyte,
"\t\t%lu packet%s (%lu byte%s) received in-sequence\n");
p2(tcps_rcvduppack, tcps_rcvdupbyte,
"\t\t%lu completely duplicate packet%s (%lu byte%s)\n");
p(tcps_pawsdrop, "\t\t%lu old duplicate packet%s\n");
p2(tcps_rcvpartduppack, tcps_rcvpartdupbyte,
"\t\t%lu packet%s with some dup. data (%lu byte%s duped)\n");
p2(tcps_rcvoopack, tcps_rcvoobyte,
"\t\t%lu out-of-order packet%s (%lu byte%s)\n");
p2(tcps_rcvpackafterwin, tcps_rcvbyteafterwin,
"\t\t%lu packet%s (%lu byte%s) of data after window\n");
p(tcps_rcvwinprobe, "\t\t%lu window probe%s\n");
p(tcps_rcvwinupd, "\t\t%lu window update packet%s\n");
p(tcps_rcvafterclose, "\t\t%lu packet%s received after close\n");
p(tcps_rcvbadsum, "\t\t%lu discarded for bad checksum%s\n");
p(tcps_rcvbadoff, "\t\t%lu discarded for bad header offset field%s\n");
p1a(tcps_rcvshort, "\t\t%lu discarded because packet too short\n");
p(tcps_connattempt, "\t%lu connection request%s\n");
p(tcps_accepts, "\t%lu connection accept%s\n");
p(tcps_badsyn, "\t%lu bad connection attempt%s\n");
p(tcps_listendrop, "\t%lu listen queue overflow%s\n");
p(tcps_connects, "\t%lu connection%s established (including accepts)\n");
p2(tcps_closed, tcps_drops,
"\t%lu connection%s closed (including %lu drop%s)\n");
p(tcps_cachedrtt, "\t\t%lu connection%s updated cached RTT on close\n");
p(tcps_cachedrttvar,
"\t\t%lu connection%s updated cached RTT variance on close\n");
p(tcps_cachedssthresh,
"\t\t%lu connection%s updated cached ssthresh on close\n");
p(tcps_conndrops, "\t%lu embryonic connection%s dropped\n");
p2(tcps_rttupdated, tcps_segstimed,
"\t%lu segment%s updated rtt (of %lu attempt%s)\n");
p(tcps_rexmttimeo, "\t%lu retransmit timeout%s\n");
p(tcps_timeoutdrop, "\t\t%lu connection%s dropped by rexmit timeout\n");
p(tcps_persisttimeo, "\t%lu persist timeout%s\n");
p(tcps_persistdrop, "\t\t%lu connection%s dropped by persist timeout\n");
p(tcps_keeptimeo, "\t%lu keepalive timeout%s\n");
p(tcps_keepprobe, "\t\t%lu keepalive probe%s sent\n");
p(tcps_keepdrops, "\t\t%lu connection%s dropped by keepalive\n");
p(tcps_predack, "\t%lu correct ACK header prediction%s\n");
p(tcps_preddat, "\t%lu correct data packet header prediction%s\n");
#undef p
#undef p1a
#undef p2
#undef p2a
#undef p3
}
/*
* Dump UDP statistics structure.
*/
void
udp_stats(off, name)
u_long off;
char *name;
{
struct udpstat udpstat;
size_t len = sizeof udpstat;
u_long delivered;
if (sysctlbyname("net.inet.udp.stats", &udpstat, &len, 0, 0) < 0) {
warn("sysctl: net.inet.udp.stats");
return;
}
#ifdef INET6
if (udp_done != 0)
return;
else
udp_done = 1;
#endif
printf("%s:\n", name);
#define p(f, m) if (udpstat.f || sflag <= 1) \
printf(m, udpstat.f, plural(udpstat.f))
#define p1a(f, m) if (udpstat.f || sflag <= 1) \
printf(m, udpstat.f)
p(udps_ipackets, "\t%lu datagram%s received\n");
p1a(udps_hdrops, "\t%lu with incomplete header\n");
p1a(udps_badlen, "\t%lu with bad data length field\n");
p1a(udps_badsum, "\t%lu with bad checksum\n");
p1a(udps_nosum, "\t%lu with no checksum\n");
p1a(udps_noport, "\t%lu dropped due to no socket\n");
p(udps_noportbcast,
"\t%lu broadcast/multicast datagram%s dropped due to no socket\n");
p1a(udps_fullsock, "\t%lu dropped due to full socket buffers\n");
p1a(udpps_pcbhashmiss, "\t%lu not for hashed pcb\n");
delivered = udpstat.udps_ipackets -
udpstat.udps_hdrops -
udpstat.udps_badlen -
udpstat.udps_badsum -
udpstat.udps_noport -
udpstat.udps_noportbcast -
udpstat.udps_fullsock;
if (delivered || sflag <= 1)
printf("\t%lu delivered\n", delivered);
p(udps_opackets, "\t%lu datagram%s output\n");
#undef p
#undef p1a
}
/*
* Dump IP statistics structure.
*/
void
ip_stats(off, name)
u_long off;
char *name;
{
struct ipstat ipstat;
size_t len = sizeof ipstat;
if (sysctlbyname("net.inet.ip.stats", &ipstat, &len, 0, 0) < 0) {
warn("sysctl: net.inet.ip.stats");
return;
}
printf("%s:\n", name);
#define p(f, m) if (ipstat.f || sflag <= 1) \
printf(m, ipstat.f, plural(ipstat.f))
#define p1a(f, m) if (ipstat.f || sflag <= 1) \
printf(m, ipstat.f)
p(ips_total, "\t%lu total packet%s received\n");
p(ips_badsum, "\t%lu bad header checksum%s\n");
p1a(ips_toosmall, "\t%lu with size smaller than minimum\n");
p1a(ips_tooshort, "\t%lu with data size < data length\n");
p1a(ips_toolong, "\t%lu with ip length > max ip packet size\n");
p1a(ips_badhlen, "\t%lu with header length < data size\n");
p1a(ips_badlen, "\t%lu with data length < header length\n");
p1a(ips_badoptions, "\t%lu with bad options\n");
p1a(ips_badvers, "\t%lu with incorrect version number\n");
p(ips_fragments, "\t%lu fragment%s received\n");
p(ips_fragdropped, "\t%lu fragment%s dropped (dup or out of space)\n");
p(ips_fragtimeout, "\t%lu fragment%s dropped after timeout\n");
p(ips_reassembled, "\t%lu packet%s reassembled ok\n");
p(ips_delivered, "\t%lu packet%s for this host\n");
p(ips_noproto, "\t%lu packet%s for unknown/unsupported protocol\n");
p(ips_forward, "\t%lu packet%s forwarded");
p(ips_fastforward, " (%lu packet%s fast forwarded)");
if (ipstat.ips_forward || sflag <= 1)
putchar('\n');
p(ips_cantforward, "\t%lu packet%s not forwardable\n");
p(ips_notmember,
"\t%lu packet%s received for unknown multicast group\n");
p(ips_redirectsent, "\t%lu redirect%s sent\n");
p(ips_localout, "\t%lu packet%s sent from this host\n");
p(ips_rawout, "\t%lu packet%s sent with fabricated ip header\n");
p(ips_odropped,
"\t%lu output packet%s dropped due to no bufs, etc.\n");
p(ips_noroute, "\t%lu output packet%s discarded due to no route\n");
p(ips_fragmented, "\t%lu output datagram%s fragmented\n");
p(ips_ofragments, "\t%lu fragment%s created\n");
p(ips_cantfrag, "\t%lu datagram%s that can't be fragmented\n");
p(ips_nogif, "\t%lu tunneling packet%s that can't find gif\n");
#undef p
#undef p1a
}
static char *icmpnames[] = {
"echo reply",
"#1",
"#2",
"destination unreachable",
"source quench",
"routing redirect",
"#6",
"#7",
"echo",
"router advertisement",
"router solicitation",
"time exceeded",
"parameter problem",
"time stamp",
"time stamp reply",
"information request",
"information request reply",
"address mask request",
"address mask reply",
};
/*
* Dump ICMP statistics.
*/
void
icmp_stats(off, name)
u_long off;
char *name;
{
struct icmpstat icmpstat;
int i, first;
int mib[4]; /* CTL_NET + PF_INET + IPPROTO_ICMP + req */
size_t len;
mib[0] = CTL_NET;
mib[1] = PF_INET;
mib[2] = IPPROTO_ICMP;
mib[3] = ICMPCTL_STATS;
len = sizeof icmpstat;
memset(&icmpstat, 0, len);
if (sysctl(mib, 4, &icmpstat, &len, (void *)0, 0) < 0)
return; /* XXX should complain, but not traditional */
printf("%s:\n", name);
#define p(f, m) if (icmpstat.f || sflag <= 1) \
printf(m, icmpstat.f, plural(icmpstat.f))
#define p1a(f, m) if (icmpstat.f || sflag <= 1) \
printf(m, icmpstat.f)
p(icps_error, "\t%lu call%s to icmp_error\n");
p(icps_oldicmp,
"\t%lu error%s not generated 'cuz old message was icmp\n");
for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++)
if (icmpstat.icps_outhist[i] != 0) {
if (first) {
printf("\tOutput histogram:\n");
first = 0;
}
printf("\t\t%s: %lu\n", icmpnames[i],
icmpstat.icps_outhist[i]);
}
p(icps_badcode, "\t%lu message%s with bad code fields\n");
p(icps_tooshort, "\t%lu message%s < minimum length\n");
p(icps_checksum, "\t%lu bad checksum%s\n");
p(icps_badlen, "\t%lu message%s with bad length\n");
p1a(icps_bmcastecho, "\t%lu multicast echo requests ignored\n");
p1a(icps_bmcasttstamp, "\t%lu multicast timestamp requests ignored\n");
for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++)
if (icmpstat.icps_inhist[i] != 0) {
if (first) {
printf("\tInput histogram:\n");
first = 0;
}
printf("\t\t%s: %lu\n", icmpnames[i],
icmpstat.icps_inhist[i]);
}
p(icps_reflect, "\t%lu message response%s generated\n");
#undef p
#undef p1a
mib[3] = ICMPCTL_MASKREPL;
len = sizeof i;
if (sysctl(mib, 4, &i, &len, (void *)0, 0) < 0)
return;
printf("\tICMP address mask responses are %sabled\n",
i ? "en" : "dis");
}
/*
* Dump IGMP statistics structure.
*/
void
igmp_stats(off, name)
u_long off;
char *name;
{
struct igmpstat igmpstat;
size_t len = sizeof igmpstat;
if (sysctlbyname("net.inet.igmp.stats", &igmpstat, &len, 0, 0) < 0) {
warn("sysctl: net.inet.igmp.stats");
return;
}
printf("%s:\n", name);
#define p(f, m) if (igmpstat.f || sflag <= 1) \
printf(m, igmpstat.f, plural(igmpstat.f))
#define py(f, m) if (igmpstat.f || sflag <= 1) \
printf(m, igmpstat.f, igmpstat.f != 1 ? "ies" : "y")
p(igps_rcv_total, "\t%u message%s received\n");
p(igps_rcv_tooshort, "\t%u message%s received with too few bytes\n");
p(igps_rcv_badsum, "\t%u message%s received with bad checksum\n");
py(igps_rcv_queries, "\t%u membership quer%s received\n");
py(igps_rcv_badqueries, "\t%u membership quer%s received with invalid field(s)\n");
p(igps_rcv_reports, "\t%u membership report%s received\n");
p(igps_rcv_badreports, "\t%u membership report%s received with invalid field(s)\n");
p(igps_rcv_ourreports, "\t%u membership report%s received for groups to which we belong\n");
p(igps_snd_reports, "\t%u membership report%s sent\n");
#undef p
#undef py
}
/*
* Pretty print an Internet address (net address + port).
*/
void
inetprint(in, port, proto,numeric)
register struct in_addr *in;
int port;
char *proto;
int numeric;
{
struct servent *sp = 0;
char line[80], *cp;
int width;
if (Wflag)
sprintf(line, "%s.", inetname(in));
else
sprintf(line, "%.*s.", (Aflag && !numeric) ? 12 : 16, inetname(in));
cp = index(line, '\0');
if (!numeric && port)
sp = getservbyport((int)port, proto);
if (sp || port == 0)
sprintf(cp, "%.15s ", sp ? sp->s_name : "*");
else
sprintf(cp, "%d ", ntohs((u_short)port));
width = (Aflag && !Wflag) ? 18 : 22;
if (Wflag)
printf("%-*s ", width, line);
else
printf("%-*.*s ", width, width, line);
}
/*
* Construct an Internet address representation.
* If the nflag has been supplied, give
* numeric value, otherwise try for symbolic name.
*/
char *
inetname(inp)
struct in_addr *inp;
{
register char *cp;
static char line[MAXHOSTNAMELEN];
struct hostent *hp;
struct netent *np;
cp = 0;
if (!nflag && inp->s_addr != INADDR_ANY) {
int net = inet_netof(*inp);
int lna = inet_lnaof(*inp);
if (lna == INADDR_ANY) {
np = getnetbyaddr(net, AF_INET);
if (np)
cp = np->n_name;
}
if (cp == 0) {
hp = gethostbyaddr((char *)inp, sizeof (*inp), AF_INET);
if (hp) {
cp = hp->h_name;
trimdomain(cp, strlen(cp));
}
}
}
if (inp->s_addr == INADDR_ANY)
strcpy(line, "*");
else if (cp) {
strncpy(line, cp, sizeof(line) - 1);
line[sizeof(line) - 1] = '\0';
} else {
inp->s_addr = ntohl(inp->s_addr);
#define C(x) ((u_int)((x) & 0xff))
sprintf(line, "%u.%u.%u.%u", C(inp->s_addr >> 24),
C(inp->s_addr >> 16), C(inp->s_addr >> 8), C(inp->s_addr));
}
return (line);
}
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