437 lines
13 KiB
C
437 lines
13 KiB
C
/*
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* Copyright (c) 1983, 1988 Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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/*static char sccsid[] = "from: @(#)inet.c 5.15 (Berkeley) 6/18/90";*/
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static char rcsid[] = "$Id: inet.c,v 1.5 1993/08/01 18:10:52 mycroft Exp $";
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#endif /* not lint */
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/mbuf.h>
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#include <sys/protosw.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/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 <netdb.h>
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#include <stdio.h>
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#include <string.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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extern int Aflag;
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extern int aflag;
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extern int nflag;
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extern char *plural();
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char *inetname();
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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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protopr(off, name)
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off_t off;
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char *name;
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{
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struct inpcb cb;
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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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kvm_read(off, (char *)&cb, sizeof (struct inpcb));
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inpcb = cb;
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prev = (struct inpcb *)off;
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if (inpcb.inp_next == (struct inpcb *)off)
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return;
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while (inpcb.inp_next != (struct inpcb *)off) {
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next = inpcb.inp_next;
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kvm_read((off_t)next, (char *)&inpcb, sizeof (inpcb));
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if (inpcb.inp_prev != prev) {
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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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kvm_read((off_t)inpcb.inp_socket,
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(char *)&sockb, sizeof (sockb));
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if (istcp) {
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kvm_read((off_t)inpcb.inp_ppcb,
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(char *)&tcpcb, sizeof (tcpcb));
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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, inpcb.inp_lport, name);
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inetprint(&inpcb.inp_faddr, 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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}
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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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tcp_stats(off, name)
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off_t 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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kvm_read(off, (char *)&tcpstat, sizeof (tcpstat));
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#define p(f, m) printf(m, tcpstat.f, plural(tcpstat.f))
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#define p2(f1, f2, m) printf(m, tcpstat.f1, plural(tcpstat.f1), tcpstat.f2, plural(tcpstat.f2))
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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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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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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_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_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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#undef p
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#undef p2
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}
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/*
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* Dump UDP statistics structure.
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*/
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udp_stats(off, name)
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off_t off;
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char *name;
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{
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struct udpstat udpstat;
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if (off == 0)
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return;
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kvm_read(off, (char *)&udpstat, sizeof (udpstat));
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printf("%s:\n\t%u packet%s sent\n", name,
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udpstat.udps_opackets, plural(udpstat.udps_opackets));
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printf("\t%u packet%s received\n",
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udpstat.udps_ipackets, plural(udpstat.udps_ipackets));
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printf("\t%u incomplete header%s\n",
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udpstat.udps_hdrops, plural(udpstat.udps_hdrops));
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printf("\t%u bad data length field%s\n",
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udpstat.udps_badlen, plural(udpstat.udps_badlen));
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printf("\t%u bad checksum%s\n",
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udpstat.udps_badsum, plural(udpstat.udps_badsum));
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printf("\t%u packet%s received on unbound ports\n",
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udpstat.udps_noport, plural(udpstat.udps_noport));
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printf("\t%u packet%s received (arrived as bcast) on unbound ports\n",
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udpstat.udps_noportbcast, plural(udpstat.udps_noportbcast));
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printf("\t%u packet%s dropped, socket full\n",
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udpstat.udps_fullsock, plural(udpstat.udps_fullsock));
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printf("\t%u packet%s missed pcb cache\n",
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udpstat.udpps_pcbcachemiss, plural(udpstat.udpps_pcbcachemiss));
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}
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/*
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* Dump IP statistics structure.
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*/
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ip_stats(off, name)
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off_t 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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kvm_read(off, (char *)&ipstat, sizeof (ipstat));
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printf("%s:\n\t%u total packets received\n", name,
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ipstat.ips_total);
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printf("\t%u bad header checksum%s\n",
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ipstat.ips_badsum, plural(ipstat.ips_badsum));
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printf("\t%u with size smaller than minimum\n", ipstat.ips_tooshort);
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printf("\t%u with data size < data length\n", ipstat.ips_toosmall);
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printf("\t%u with header length < data size\n", ipstat.ips_badhlen);
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printf("\t%u with data length < header length\n", ipstat.ips_badlen);
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printf("\t%u fragment%s received\n",
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ipstat.ips_fragments, plural(ipstat.ips_fragments));
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printf("\t%u fragment%s dropped (dup or out of space)\n",
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ipstat.ips_fragdropped, plural(ipstat.ips_fragdropped));
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printf("\t%u fragment%s dropped after timeout\n",
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ipstat.ips_fragtimeout, plural(ipstat.ips_fragtimeout));
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printf("\t%u packet%s forwarded\n",
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ipstat.ips_forward, plural(ipstat.ips_forward));
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printf("\t%u packet%s not forwardable\n",
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ipstat.ips_cantforward, plural(ipstat.ips_cantforward));
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printf("\t%u redirect%s sent\n",
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ipstat.ips_redirectsent, plural(ipstat.ips_redirectsent));
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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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"#9",
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"#10",
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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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icmp_stats(off, name)
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off_t 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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kvm_read(off, (char *)&icmpstat, sizeof (icmpstat));
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printf("%s:\n\t%u call%s to icmp_error\n", name,
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icmpstat.icps_error, plural(icmpstat.icps_error));
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printf("\t%u error%s not generated 'cuz old message was icmp\n",
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icmpstat.icps_oldicmp, plural(icmpstat.icps_oldicmp));
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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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printf("\t%u message%s with bad code fields\n",
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icmpstat.icps_badcode, plural(icmpstat.icps_badcode));
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printf("\t%u message%s < minimum length\n",
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icmpstat.icps_tooshort, plural(icmpstat.icps_tooshort));
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printf("\t%u bad checksum%s\n",
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icmpstat.icps_checksum, plural(icmpstat.icps_checksum));
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printf("\t%u message%s with bad length\n",
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icmpstat.icps_badlen, plural(icmpstat.icps_badlen));
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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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printf("\t%u message response%s generated\n",
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icmpstat.icps_reflect, plural(icmpstat.icps_reflect));
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}
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/*
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* Pretty print an Internet address (net address + port).
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* If the nflag was specified, use numbers instead of names.
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*/
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inetprint(in, port, proto)
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register struct in_addr *in;
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u_short port;
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char *proto;
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{
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struct servent *sp = 0;
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char line[80], *cp, *index();
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int width;
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sprintf(line, "%.*s.", (Aflag && !nflag) ? 12 : 16, inetname(*in));
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cp = index(line, '\0');
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if (!nflag && port)
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sp = getservbyport((int)port, proto);
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if (sp || port == 0)
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sprintf(cp, "%.8s", sp ? sp->s_name : "*");
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else
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sprintf(cp, "%d", ntohs((u_short)port));
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width = Aflag ? 18 : 22;
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printf(" %-*.*s", width, width, line);
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}
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/*
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* Construct an Internet address representation.
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* If the nflag has been supplied, give
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* numeric value, otherwise try for symbolic name.
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*/
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char *
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inetname(in)
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struct in_addr in;
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{
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register char *cp;
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static char line[50];
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struct hostent *hp;
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struct netent *np;
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static char domain[MAXHOSTNAMELEN + 1];
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static int first = 1;
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if (first && !nflag) {
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first = 0;
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if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
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(cp = index(domain, '.')))
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(void) strcpy(domain, cp + 1);
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else
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domain[0] = 0;
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}
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cp = 0;
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if (!nflag && in.s_addr != INADDR_ANY) {
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int net = inet_netof(in);
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int lna = inet_lnaof(in);
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if (lna == INADDR_ANY) {
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np = getnetbyaddr(net, AF_INET);
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if (np)
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cp = np->n_name;
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}
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if (cp == 0) {
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hp = gethostbyaddr((char *)&in, sizeof (in), AF_INET);
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if (hp) {
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if ((cp = index(hp->h_name, '.')) &&
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!strcmp(cp + 1, domain))
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*cp = 0;
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cp = hp->h_name;
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}
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}
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}
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if (in.s_addr == INADDR_ANY)
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strcpy(line, "*");
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else if (cp)
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strcpy(line, cp);
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else {
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in.s_addr = ntohl(in.s_addr);
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#define C(x) ((x) & 0xff)
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sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24),
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C(in.s_addr >> 16), C(in.s_addr >> 8), C(in.s_addr));
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}
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return (line);
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}
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