511 lines
16 KiB
C
511 lines
16 KiB
C
/*
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* Copyright (c) 1983, 1988, 1993
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* The 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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static char sccsid[] = "@(#)inet.c 8.4 (Berkeley) 4/20/94";
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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/socketvar.h>
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#include <sys/mbuf.h>
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#include <sys/protosw.h>
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#include <sys/queue.h>
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#include <net/route.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <netinet/in_pcb.h>
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#include <netinet/ip_icmp.h>
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#include <netinet/icmp_var.h>
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#include <netinet/igmp_var.h>
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#include <netinet/ip_var.h>
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#include <netinet/tcp.h>
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#include <netinet/tcpip.h>
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#include <netinet/tcp_seq.h>
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#define TCPSTATES
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#include <netinet/tcp_fsm.h>
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#include <netinet/tcp_timer.h>
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#include <netinet/tcp_var.h>
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#include <netinet/tcp_debug.h>
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#include <netinet/udp.h>
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#include <netinet/udp_var.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <stdio.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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struct inpcb inpcb;
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struct tcpcb tcpcb;
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struct socket sockb;
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char *inetname __P((struct in_addr *));
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void inetprint __P((struct in_addr *, int, char *));
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/*
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* Print a summary of connections related to an Internet
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* protocol. For TCP, also give state of connection.
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* Listening processes (aflag) are suppressed unless the
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* -a (all) flag is specified.
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*/
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void
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protopr(off, name)
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u_long off;
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char *name;
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{
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struct inpcbhead head;
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register struct inpcb *prev, *next;
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int istcp;
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static int first = 1;
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if (off == 0)
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return;
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istcp = strcmp(name, "tcp") == 0;
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kread(off, (char *)&head, sizeof (struct inpcbhead));
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prev = (struct inpcb *)off;
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for (next = head.lh_first; next != NULL; next = inpcb.inp_list.le_next) {
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if (kread((u_long)next, (char *)&inpcb, sizeof (inpcb))) {
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printf("???\n");
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break;
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}
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if (!aflag &&
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inet_lnaof(inpcb.inp_laddr) == INADDR_ANY) {
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prev = next;
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continue;
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}
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if (kread((u_long)inpcb.inp_socket, (char *)&sockb, sizeof (sockb))) {
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printf("???\n");
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break;
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};
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if (istcp) {
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if (kread((u_long)inpcb.inp_ppcb,
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(char *)&tcpcb, sizeof (tcpcb))) {
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printf("???\n");
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break;
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};
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}
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if (first) {
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printf("Active Internet connections");
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if (aflag)
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printf(" (including servers)");
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putchar('\n');
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if (Aflag)
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printf("%-8.8s ", "PCB");
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printf(Aflag ?
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"%-5.5s %-6.6s %-6.6s %-18.18s %-18.18s %s\n" :
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"%-5.5s %-6.6s %-6.6s %-22.22s %-22.22s %s\n",
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"Proto", "Recv-Q", "Send-Q",
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"Local Address", "Foreign Address", "(state)");
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first = 0;
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}
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if (Aflag)
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if (istcp)
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printf("%8x ", inpcb.inp_ppcb);
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else
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printf("%8x ", next);
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printf("%-5.5s %6d %6d ", name, sockb.so_rcv.sb_cc,
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sockb.so_snd.sb_cc);
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inetprint(&inpcb.inp_laddr, (int)inpcb.inp_lport, name);
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inetprint(&inpcb.inp_faddr, (int)inpcb.inp_fport, name);
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if (istcp) {
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if (tcpcb.t_state < 0 || tcpcb.t_state >= TCP_NSTATES)
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printf(" %d", tcpcb.t_state);
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else {
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printf(" %s", tcpstates[tcpcb.t_state]);
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#if defined(TF_NEEDSYN) && defined(TF_NEEDFIN)
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/* Show T/TCP `hidden state' */
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if (tcpcb.t_flags & (TF_NEEDSYN|TF_NEEDFIN))
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putchar('*');
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#endif /* defined(TF_NEEDSYN) && defined(TF_NEEDFIN) */
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}
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}
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putchar('\n');
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prev = next;
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}
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}
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/*
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* Dump TCP statistics structure.
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*/
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void
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tcp_stats(off, name)
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u_long off;
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char *name;
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{
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struct tcpstat tcpstat;
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if (off == 0)
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return;
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printf ("%s:\n", name);
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kread(off, (char *)&tcpstat, sizeof (tcpstat));
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#define p(f, m) if (tcpstat.f || sflag <= 1) \
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printf(m, tcpstat.f, plural(tcpstat.f))
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#define p2(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1) \
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printf(m, tcpstat.f1, plural(tcpstat.f1), tcpstat.f2, plural(tcpstat.f2))
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#define p3(f, m) if (tcpstat.f || sflag <= 1) \
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printf(m, tcpstat.f, plurales(tcpstat.f))
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p(tcps_sndtotal, "\t%d packet%s sent\n");
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p2(tcps_sndpack,tcps_sndbyte,
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"\t\t%d data packet%s (%d byte%s)\n");
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p2(tcps_sndrexmitpack, tcps_sndrexmitbyte,
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"\t\t%d data packet%s (%d byte%s) retransmitted\n");
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p(tcps_mturesent, "\t\t%d resend%s initiated by MTU discovery\n");
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p2(tcps_sndacks, tcps_delack,
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"\t\t%d ack-only packet%s (%d delayed)\n");
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p(tcps_sndurg, "\t\t%d URG only packet%s\n");
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p(tcps_sndprobe, "\t\t%d window probe packet%s\n");
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p(tcps_sndwinup, "\t\t%d window update packet%s\n");
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p(tcps_sndctrl, "\t\t%d control packet%s\n");
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p(tcps_rcvtotal, "\t%d packet%s received\n");
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p2(tcps_rcvackpack, tcps_rcvackbyte, "\t\t%d ack%s (for %d byte%s)\n");
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p(tcps_rcvdupack, "\t\t%d duplicate ack%s\n");
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p(tcps_rcvacktoomuch, "\t\t%d ack%s for unsent data\n");
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p2(tcps_rcvpack, tcps_rcvbyte,
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"\t\t%d packet%s (%d byte%s) received in-sequence\n");
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p2(tcps_rcvduppack, tcps_rcvdupbyte,
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"\t\t%d completely duplicate packet%s (%d byte%s)\n");
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p(tcps_pawsdrop, "\t\t%d old duplicate packet%s\n");
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p2(tcps_rcvpartduppack, tcps_rcvpartdupbyte,
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"\t\t%d packet%s with some dup. data (%d byte%s duped)\n");
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p2(tcps_rcvoopack, tcps_rcvoobyte,
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"\t\t%d out-of-order packet%s (%d byte%s)\n");
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p2(tcps_rcvpackafterwin, tcps_rcvbyteafterwin,
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"\t\t%d packet%s (%d byte%s) of data after window\n");
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p(tcps_rcvwinprobe, "\t\t%d window probe%s\n");
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p(tcps_rcvwinupd, "\t\t%d window update packet%s\n");
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p(tcps_rcvafterclose, "\t\t%d packet%s received after close\n");
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p(tcps_rcvbadsum, "\t\t%d discarded for bad checksum%s\n");
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p(tcps_rcvbadoff, "\t\t%d discarded for bad header offset field%s\n");
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p(tcps_rcvshort, "\t\t%d discarded because packet too short\n");
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p(tcps_connattempt, "\t%d connection request%s\n");
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p(tcps_accepts, "\t%d connection accept%s\n");
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p(tcps_connects, "\t%d connection%s established (including accepts)\n");
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p2(tcps_closed, tcps_drops,
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"\t%d connection%s closed (including %d drop%s)\n");
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p(tcps_cachedrtt, "\t\t%d connection%s updated cached RTT on close\n");
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p(tcps_cachedrttvar,
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"\t\t%d connection%s updated cached RTT variance on close\n");
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p(tcps_cachedssthresh,
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"\t\t%d connection%s updated cached ssthresh on close\n");
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p(tcps_conndrops, "\t%d embryonic connection%s dropped\n");
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p2(tcps_rttupdated, tcps_segstimed,
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"\t%d segment%s updated rtt (of %d attempt%s)\n");
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p(tcps_rexmttimeo, "\t%d retransmit timeout%s\n");
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p(tcps_timeoutdrop, "\t\t%d connection%s dropped by rexmit timeout\n");
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p(tcps_persisttimeo, "\t%d persist timeout%s\n");
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p(tcps_persistdrop, "\t\t%d connection%s dropped by persist timeout\n");
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p(tcps_keeptimeo, "\t%d keepalive timeout%s\n");
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p(tcps_keepprobe, "\t\t%d keepalive probe%s sent\n");
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p(tcps_keepdrops, "\t\t%d connection%s dropped by keepalive\n");
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p(tcps_predack, "\t%d correct ACK header prediction%s\n");
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p(tcps_preddat, "\t%d correct data packet header prediction%s\n");
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#undef p
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#undef p2
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#undef p3
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}
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/*
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* Dump UDP statistics structure.
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*/
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void
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udp_stats(off, name)
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u_long off;
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char *name;
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{
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struct udpstat udpstat;
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u_long delivered;
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if (off == 0)
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return;
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kread(off, (char *)&udpstat, sizeof (udpstat));
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printf("%s:\n", name);
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#define p(f, m) if (udpstat.f || sflag <= 1) \
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printf(m, udpstat.f, plural(udpstat.f))
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p(udps_ipackets, "\t%u datagram%s received\n");
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p(udps_hdrops, "\t%u with incomplete header\n");
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p(udps_badlen, "\t%u with bad data length field\n");
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p(udps_badsum, "\t%u with bad checksum\n");
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p(udps_noport, "\t%u dropped due to no socket\n");
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p(udps_noportbcast, "\t%u broadcast/multicast datagram%s dropped due to no socket\n");
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p(udps_fullsock, "\t%u dropped due to full socket buffers\n");
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delivered = udpstat.udps_ipackets -
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udpstat.udps_hdrops -
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udpstat.udps_badlen -
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udpstat.udps_badsum -
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udpstat.udps_noport -
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udpstat.udps_noportbcast -
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udpstat.udps_fullsock;
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if (delivered || sflag <= 1)
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printf("\t%u delivered\n", delivered);
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p(udps_opackets, "\t%u datagram%s output\n");
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#undef p
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}
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/*
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* Dump IP statistics structure.
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*/
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void
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ip_stats(off, name)
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u_long off;
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char *name;
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{
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struct ipstat ipstat;
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if (off == 0)
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return;
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kread(off, (char *)&ipstat, sizeof (ipstat));
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printf("%s:\n", name);
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#define p(f, m) if (ipstat.f || sflag <= 1) \
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printf(m, ipstat.f, plural(ipstat.f))
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p(ips_total, "\t%u total packet%s received\n");
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p(ips_badsum, "\t%u bad header checksum%s\n");
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p(ips_toosmall, "\t%u with size smaller than minimum\n");
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p(ips_tooshort, "\t%u with data size < data length\n");
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p(ips_badhlen, "\t%u with header length < data size\n");
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p(ips_badlen, "\t%u with data length < header length\n");
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p(ips_badoptions, "\t%u with bad options\n");
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p(ips_badvers, "\t%u with incorrect version number\n");
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p(ips_fragments, "\t%u fragment%s received\n");
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p(ips_fragdropped, "\t%u fragment%s dropped (dup or out of space)\n");
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p(ips_fragtimeout, "\t%u fragment%s dropped after timeout\n");
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p(ips_reassembled, "\t%u packet%s reassembled ok\n");
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p(ips_delivered, "\t%u packet%s for this host\n");
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p(ips_noproto, "\t%u packet%s for unknown/unsupported protocol\n");
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p(ips_forward, "\t%u packet%s forwarded\n");
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p(ips_cantforward, "\t%u packet%s not forwardable\n");
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p(ips_redirectsent, "\t%u redirect%s sent\n");
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p(ips_localout, "\t%u packet%s sent from this host\n");
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p(ips_rawout, "\t%u packet%s sent with fabricated ip header\n");
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p(ips_odropped, "\t%u output packet%s dropped due to no bufs, etc.\n");
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p(ips_noroute, "\t%u output packet%s discarded due to no route\n");
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p(ips_fragmented, "\t%u output datagram%s fragmented\n");
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p(ips_ofragments, "\t%u fragment%s created\n");
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p(ips_cantfrag, "\t%u datagram%s that can't be fragmented\n");
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#undef p
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}
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static char *icmpnames[] = {
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"echo reply",
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"#1",
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"#2",
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"destination unreachable",
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"source quench",
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"routing redirect",
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"#6",
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"#7",
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"echo",
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"router advertisement",
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"router solicitation",
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"time exceeded",
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"parameter problem",
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"time stamp",
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"time stamp reply",
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"information request",
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"information request reply",
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"address mask request",
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"address mask reply",
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};
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/*
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* Dump ICMP statistics.
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*/
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void
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icmp_stats(off, name)
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u_long off;
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char *name;
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{
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struct icmpstat icmpstat;
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register int i, first;
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if (off == 0)
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return;
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kread(off, (char *)&icmpstat, sizeof (icmpstat));
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printf("%s:\n", name);
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#define p(f, m) if (icmpstat.f || sflag <= 1) \
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printf(m, icmpstat.f, plural(icmpstat.f))
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p(icps_error, "\t%u call%s to icmp_error\n");
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p(icps_oldicmp,
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"\t%u error%s not generated 'cuz old message was icmp\n");
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for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++)
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if (icmpstat.icps_outhist[i] != 0) {
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if (first) {
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printf("\tOutput histogram:\n");
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first = 0;
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}
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printf("\t\t%s: %u\n", icmpnames[i],
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icmpstat.icps_outhist[i]);
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}
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p(icps_badcode, "\t%u message%s with bad code fields\n");
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p(icps_tooshort, "\t%u message%s < minimum length\n");
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p(icps_checksum, "\t%u bad checksum%s\n");
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p(icps_badlen, "\t%u message%s with bad length\n");
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for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++)
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if (icmpstat.icps_inhist[i] != 0) {
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if (first) {
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printf("\tInput histogram:\n");
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first = 0;
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}
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printf("\t\t%s: %u\n", icmpnames[i],
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icmpstat.icps_inhist[i]);
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}
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p(icps_reflect, "\t%u message response%s generated\n");
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#undef p
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}
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/*
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* Dump IGMP statistics structure.
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*/
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void
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igmp_stats(off, name)
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u_long off;
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char *name;
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{
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struct igmpstat igmpstat;
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if (off == 0)
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return;
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kread(off, (char *)&igmpstat, sizeof (igmpstat));
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printf("%s:\n", name);
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#define p(f, m) if (igmpstat.f || sflag <= 1) \
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printf(m, igmpstat.f, plural(igmpstat.f))
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#define py(f, m) if (igmpstat.f || sflag <= 1) \
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printf(m, igmpstat.f, igmpstat.f != 1 ? "ies" : "y")
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p(igps_rcv_total, "\t%u message%s received\n");
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p(igps_rcv_tooshort, "\t%u message%s received with too few bytes\n");
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p(igps_rcv_badsum, "\t%u message%s received with bad checksum\n");
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py(igps_rcv_queries, "\t%u membership quer%s received\n");
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py(igps_rcv_badqueries, "\t%u membership quer%s received with invalid field(s)\n");
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p(igps_rcv_reports, "\t%u membership report%s received\n");
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p(igps_rcv_badreports, "\t%u membership report%s received with invalid field(s)\n");
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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).
|
|
* If the nflag was specified, use numbers instead of names.
|
|
*/
|
|
void
|
|
inetprint(in, port, proto)
|
|
register struct in_addr *in;
|
|
int port;
|
|
char *proto;
|
|
{
|
|
struct servent *sp = 0;
|
|
char line[80], *cp;
|
|
int width;
|
|
|
|
sprintf(line, "%.*s.", (Aflag && !nflag) ? 12 : 16, inetname(in));
|
|
cp = index(line, '\0');
|
|
if (!nflag && port)
|
|
sp = getservbyport((int)port, proto);
|
|
if (sp || port == 0)
|
|
sprintf(cp, "%.8s", sp ? sp->s_name : "*");
|
|
else
|
|
sprintf(cp, "%d", ntohs((u_short)port));
|
|
width = Aflag ? 18 : 22;
|
|
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[50];
|
|
struct hostent *hp;
|
|
struct netent *np;
|
|
static char domain[MAXHOSTNAMELEN + 1];
|
|
static int first = 1;
|
|
|
|
if (first && !nflag) {
|
|
first = 0;
|
|
if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
|
|
(cp = index(domain, '.')))
|
|
(void) strcpy(domain, cp + 1);
|
|
else
|
|
domain[0] = 0;
|
|
}
|
|
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) {
|
|
if ((cp = index(hp->h_name, '.')) &&
|
|
!strcmp(cp + 1, domain))
|
|
*cp = 0;
|
|
cp = hp->h_name;
|
|
}
|
|
}
|
|
}
|
|
if (inp->s_addr == INADDR_ANY)
|
|
strcpy(line, "*");
|
|
else if (cp)
|
|
strcpy(line, cp);
|
|
else {
|
|
inp->s_addr = ntohl(inp->s_addr);
|
|
#define C(x) ((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);
|
|
}
|