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- /*
- * Copyright (c) 1983, 1988 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 5.15 (Berkeley) 6/18/90";
- #endif /* not lint */
-
- #include <sys/param.h>
- #include <sys/socket.h>
- #include <sys/socketvar.h>
- #include <sys/mbuf.h>
- #include <sys/protosw.h>
-
- #include <net/route.h>
- #include <netinet/in.h>
- #include <netinet/in_systm.h>
- #include <netinet/ip.h>
- #include <netinet/in_pcb.h>
- #include <netinet/ip_icmp.h>
- #include <netinet/icmp_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 <netdb.h>
-
- #include <stdio.h>
- #include <string.h>
-
- struct inpcb inpcb;
- struct tcpcb tcpcb;
- struct socket sockb;
- extern int Aflag;
- extern int aflag;
- extern int nflag;
- extern char *plural();
-
- char *inetname();
-
- /*
- * 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.
- */
- protopr(off, name)
- off_t off;
- char *name;
- {
- struct inpcb cb;
- register struct inpcb *prev, *next;
- int istcp;
- static int first = 1;
-
- if (off == 0)
- return;
- istcp = strcmp(name, "tcp") == 0;
- kvm_read(off, (char *)&cb, sizeof (struct inpcb));
- inpcb = cb;
- prev = (struct inpcb *)off;
- if (inpcb.inp_next == (struct inpcb *)off)
- return;
- while (inpcb.inp_next != (struct inpcb *)off) {
-
- next = inpcb.inp_next;
- kvm_read((off_t)next, (char *)&inpcb, sizeof (inpcb));
- if (inpcb.inp_prev != prev) {
- printf("???\n");
- break;
- }
- if (!aflag &&
- inet_lnaof(inpcb.inp_laddr) == INADDR_ANY) {
- prev = next;
- continue;
- }
- kvm_read((off_t)inpcb.inp_socket,
- (char *)&sockb, sizeof (sockb));
- if (istcp) {
- kvm_read((off_t)inpcb.inp_ppcb,
- (char *)&tcpcb, sizeof (tcpcb));
- }
- if (first) {
- printf("Active Internet connections");
- if (aflag)
- printf(" (including servers)");
- putchar('\n');
- if (Aflag)
- printf("%-8.8s ", "PCB");
- printf(Aflag ?
- "%-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("%8x ", inpcb.inp_ppcb);
- else
- printf("%8x ", next);
- printf("%-5.5s %6d %6d ", name, sockb.so_rcv.sb_cc,
- sockb.so_snd.sb_cc);
- inetprint(&inpcb.inp_laddr, inpcb.inp_lport, name);
- inetprint(&inpcb.inp_faddr, inpcb.inp_fport, name);
- if (istcp) {
- if (tcpcb.t_state < 0 || tcpcb.t_state >= TCP_NSTATES)
- printf(" %d", tcpcb.t_state);
- else
- printf(" %s", tcpstates[tcpcb.t_state]);
- }
- putchar('\n');
- prev = next;
- }
- }
-
- /*
- * Dump TCP statistics structure.
- */
- tcp_stats(off, name)
- off_t off;
- char *name;
- {
- struct tcpstat tcpstat;
-
- if (off == 0)
- return;
- printf ("%s:\n", name);
- kvm_read(off, (char *)&tcpstat, sizeof (tcpstat));
-
- #define p(f, m) printf(m, tcpstat.f, plural(tcpstat.f))
- #define p2(f1, f2, m) printf(m, tcpstat.f1, plural(tcpstat.f1), tcpstat.f2, plural(tcpstat.f2))
-
- p(tcps_sndtotal, "\t%d packet%s sent\n");
- p2(tcps_sndpack,tcps_sndbyte,
- "\t\t%d data packet%s (%d byte%s)\n");
- p2(tcps_sndrexmitpack, tcps_sndrexmitbyte,
- "\t\t%d data packet%s (%d byte%s) retransmitted\n");
- p2(tcps_sndacks, tcps_delack,
- "\t\t%d ack-only packet%s (%d delayed)\n");
- p(tcps_sndurg, "\t\t%d URG only packet%s\n");
- p(tcps_sndprobe, "\t\t%d window probe packet%s\n");
- p(tcps_sndwinup, "\t\t%d window update packet%s\n");
- p(tcps_sndctrl, "\t\t%d control packet%s\n");
- p(tcps_rcvtotal, "\t%d packet%s received\n");
- p2(tcps_rcvackpack, tcps_rcvackbyte, "\t\t%d ack%s (for %d byte%s)\n");
- p(tcps_rcvdupack, "\t\t%d duplicate ack%s\n");
- p(tcps_rcvacktoomuch, "\t\t%d ack%s for unsent data\n");
- p2(tcps_rcvpack, tcps_rcvbyte,
- "\t\t%d packet%s (%d byte%s) received in-sequence\n");
- p2(tcps_rcvduppack, tcps_rcvdupbyte,
- "\t\t%d completely duplicate packet%s (%d byte%s)\n");
- p2(tcps_rcvpartduppack, tcps_rcvpartdupbyte,
- "\t\t%d packet%s with some dup. data (%d byte%s duped)\n");
- p2(tcps_rcvoopack, tcps_rcvoobyte,
- "\t\t%d out-of-order packet%s (%d byte%s)\n");
- p2(tcps_rcvpackafterwin, tcps_rcvbyteafterwin,
- "\t\t%d packet%s (%d byte%s) of data after window\n");
- p(tcps_rcvwinprobe, "\t\t%d window probe%s\n");
- p(tcps_rcvwinupd, "\t\t%d window update packet%s\n");
- p(tcps_rcvafterclose, "\t\t%d packet%s received after close\n");
- p(tcps_rcvbadsum, "\t\t%d discarded for bad checksum%s\n");
- p(tcps_rcvbadoff, "\t\t%d discarded for bad header offset field%s\n");
- p(tcps_rcvshort, "\t\t%d discarded because packet too short\n");
- p(tcps_connattempt, "\t%d connection request%s\n");
- p(tcps_accepts, "\t%d connection accept%s\n");
- p(tcps_connects, "\t%d connection%s established (including accepts)\n");
- p2(tcps_closed, tcps_drops,
- "\t%d connection%s closed (including %d drop%s)\n");
- p(tcps_conndrops, "\t%d embryonic connection%s dropped\n");
- p2(tcps_rttupdated, tcps_segstimed,
- "\t%d segment%s updated rtt (of %d attempt%s)\n");
- p(tcps_rexmttimeo, "\t%d retransmit timeout%s\n");
- p(tcps_timeoutdrop, "\t\t%d connection%s dropped by rexmit timeout\n");
- p(tcps_persisttimeo, "\t%d persist timeout%s\n");
- p(tcps_keeptimeo, "\t%d keepalive timeout%s\n");
- p(tcps_keepprobe, "\t\t%d keepalive probe%s sent\n");
- p(tcps_keepdrops, "\t\t%d connection%s dropped by keepalive\n");
- #undef p
- #undef p2
- }
-
- /*
- * Dump UDP statistics structure.
- */
- udp_stats(off, name)
- off_t off;
- char *name;
- {
- struct udpstat udpstat;
-
- if (off == 0)
- return;
- kvm_read(off, (char *)&udpstat, sizeof (udpstat));
- printf("%s:\n\t%u incomplete header%s\n", name,
- udpstat.udps_hdrops, plural(udpstat.udps_hdrops));
- printf("\t%u bad data length field%s\n",
- udpstat.udps_badlen, plural(udpstat.udps_badlen));
- printf("\t%u bad checksum%s\n",
- udpstat.udps_badsum, plural(udpstat.udps_badsum));
- }
-
- /*
- * Dump IP statistics structure.
- */
- ip_stats(off, name)
- off_t off;
- char *name;
- {
- struct ipstat ipstat;
-
- if (off == 0)
- return;
- kvm_read(off, (char *)&ipstat, sizeof (ipstat));
- printf("%s:\n\t%u total packets received\n", name,
- ipstat.ips_total);
- printf("\t%u bad header checksum%s\n",
- ipstat.ips_badsum, plural(ipstat.ips_badsum));
- printf("\t%u with size smaller than minimum\n", ipstat.ips_tooshort);
- printf("\t%u with data size < data length\n", ipstat.ips_toosmall);
- printf("\t%u with header length < data size\n", ipstat.ips_badhlen);
- printf("\t%u with data length < header length\n", ipstat.ips_badlen);
- printf("\t%u fragment%s received\n",
- ipstat.ips_fragments, plural(ipstat.ips_fragments));
- printf("\t%u fragment%s dropped (dup or out of space)\n",
- ipstat.ips_fragdropped, plural(ipstat.ips_fragdropped));
- printf("\t%u fragment%s dropped after timeout\n",
- ipstat.ips_fragtimeout, plural(ipstat.ips_fragtimeout));
- printf("\t%u packet%s forwarded\n",
- ipstat.ips_forward, plural(ipstat.ips_forward));
- printf("\t%u packet%s not forwardable\n",
- ipstat.ips_cantforward, plural(ipstat.ips_cantforward));
- printf("\t%u redirect%s sent\n",
- ipstat.ips_redirectsent, plural(ipstat.ips_redirectsent));
- }
-
- static char *icmpnames[] = {
- "echo reply",
- "#1",
- "#2",
- "destination unreachable",
- "source quench",
- "routing redirect",
- "#6",
- "#7",
- "echo",
- "#9",
- "#10",
- "time exceeded",
- "parameter problem",
- "time stamp",
- "time stamp reply",
- "information request",
- "information request reply",
- "address mask request",
- "address mask reply",
- };
-
- /*
- * Dump ICMP statistics.
- */
- icmp_stats(off, name)
- off_t off;
- char *name;
- {
- struct icmpstat icmpstat;
- register int i, first;
-
- if (off == 0)
- return;
- kvm_read(off, (char *)&icmpstat, sizeof (icmpstat));
- printf("%s:\n\t%u call%s to icmp_error\n", name,
- icmpstat.icps_error, plural(icmpstat.icps_error));
- printf("\t%u error%s not generated 'cuz old message was icmp\n",
- icmpstat.icps_oldicmp, plural(icmpstat.icps_oldicmp));
- 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: %u\n", icmpnames[i],
- icmpstat.icps_outhist[i]);
- }
- printf("\t%u message%s with bad code fields\n",
- icmpstat.icps_badcode, plural(icmpstat.icps_badcode));
- printf("\t%u message%s < minimum length\n",
- icmpstat.icps_tooshort, plural(icmpstat.icps_tooshort));
- printf("\t%u bad checksum%s\n",
- icmpstat.icps_checksum, plural(icmpstat.icps_checksum));
- printf("\t%u message%s with bad length\n",
- icmpstat.icps_badlen, plural(icmpstat.icps_badlen));
- 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: %u\n", icmpnames[i],
- icmpstat.icps_inhist[i]);
- }
- printf("\t%u message response%s generated\n",
- icmpstat.icps_reflect, plural(icmpstat.icps_reflect));
- }
-
- /*
- * Pretty print an Internet address (net address + port).
- * If the nflag was specified, use numbers instead of names.
- */
- inetprint(in, port, proto)
- register struct in_addr *in;
- u_short port;
- char *proto;
- {
- struct servent *sp = 0;
- char line[80], *cp, *index();
- 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(in)
- struct in_addr in;
- {
- 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 && in.s_addr != INADDR_ANY) {
- int net = inet_netof(in);
- int lna = inet_lnaof(in);
-
- if (lna == INADDR_ANY) {
- np = getnetbyaddr(net, AF_INET);
- if (np)
- cp = np->n_name;
- }
- if (cp == 0) {
- hp = gethostbyaddr((char *)&in, sizeof (in), AF_INET);
- if (hp) {
- if ((cp = index(hp->h_name, '.')) &&
- !strcmp(cp + 1, domain))
- *cp = 0;
- cp = hp->h_name;
- }
- }
- }
- if (in.s_addr == INADDR_ANY)
- strcpy(line, "*");
- else if (cp)
- strcpy(line, cp);
- else {
- in.s_addr = ntohl(in.s_addr);
- #define C(x) ((x) & 0xff)
- sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24),
- C(in.s_addr >> 16), C(in.s_addr >> 8), C(in.s_addr));
- }
- return (line);
- }
-