2 * Copyright (c) 1980, 1992, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
39 static const char sccsid[] = "@(#)netstat.c 8.1 (Berkeley) 6/6/93";
45 #include <sys/param.h>
46 #include <sys/queue.h>
47 #include <sys/socket.h>
48 #include <sys/socketvar.h>
49 #include <sys/protosw.h>
51 #include <netinet/in.h>
52 #include <arpa/inet.h>
53 #include <net/route.h>
54 #include <netinet/in_systm.h>
55 #include <netinet/ip.h>
57 #include <netinet/ip6.h>
59 #include <netinet/in_pcb.h>
60 #include <netinet/ip_icmp.h>
61 #include <netinet/icmp_var.h>
62 #include <netinet/ip_var.h>
63 #include <netinet/tcp.h>
64 #include <netinet/tcpip.h>
65 #include <netinet/tcp_seq.h>
66 #include <netinet/tcp_var.h>
68 #include <netinet/tcp_fsm.h>
69 #include <netinet/tcp_timer.h>
70 #include <netinet/tcp_var.h>
71 #include <netinet/tcp_debug.h>
72 #include <netinet/udp.h>
73 #include <netinet/udp_var.h>
84 static struct netinfo *enter(struct inpcb *, int, const char *);
85 static void enter_kvm(struct inpcb *, struct socket *, int, const char *);
86 static void enter_sysctl(struct inpcb *, struct xsocket *, int, const char *);
87 static void fetchnetstat_kvm(void);
88 static void fetchnetstat_sysctl(void);
89 static char *inetname(struct sockaddr *);
90 static void inetprint(struct sockaddr *, const char *);
92 #define streq(a,b) (strcmp(a,b)==0)
93 #define YMAX(w) ((w)->_maxy-1)
100 return (subwin(stdscr, LINES-3-1, 0, MAINWIN_ROW, 0));
104 TAILQ_ENTRY(netinfo) chain;
105 short ni_line; /* line on screen */
106 short ni_seen; /* 0 when not present in list */
108 #define NIF_LACHG 0x1 /* local address changed */
109 #define NIF_FACHG 0x2 /* foreign address changed */
110 short ni_state; /* tcp state */
111 const char *ni_proto; /* protocol */
112 struct sockaddr_storage ni_lsa; /* local address */
113 struct sockaddr_storage ni_fsa; /* foreign address */
114 u_int ni_rcvcc; /* rcv buffer character count */
115 u_int ni_sndcc; /* snd buffer character count */
118 TAILQ_HEAD(netinfohead, netinfo) netcb = TAILQ_HEAD_INITIALIZER(netcb);
120 static int aflag = 0;
121 static int nflag = 0;
122 static int lastrow = 1;
132 TAILQ_FOREACH(p, &netcb, chain) {
133 if (p->ni_line != -1)
144 static const char *miblist[] = {
145 "net.inet.tcp.pcblist",
146 "net.inet.udp.pcblist"
149 static char tcb[] = "tcb", udb[] = "udb";
151 struct nlist namelist[] = {
172 fetchnetstat_sysctl();
180 struct inpcbhead head;
187 if (namelist[X_TCB].n_value == 0)
189 TAILQ_FOREACH(p, &netcb, chain)
195 else if (protos&UDP) {
200 error("No protocols to display");
204 KREAD(off, &head, sizeof (struct inpcbhead));
205 LIST_FOREACH(next, &head, inp_list) {
206 KREAD(next, &inpcb, sizeof (inpcb));
209 if (inpcb.inp_vflag & INP_IPV4) {
210 if (inet_lnaof(inpcb.inp_laddr) == INADDR_ANY)
214 else if (inpcb.inp_vflag & INP_IPV6) {
215 if (memcmp(&inpcb.in6p_laddr,
216 &in6addr_any, sizeof(in6addr_any)) == 0)
221 if (nhosts && !checkhost(&inpcb))
223 if (nports && !checkport(&inpcb))
226 if (inpcb.inp_flags & INP_TIMEWAIT) {
227 bzero(&sockb, sizeof(sockb));
228 enter_kvm(&inpcb, &sockb, TCPS_TIME_WAIT,
231 KREAD(inpcb.inp_socket, &sockb,
233 KREAD(inpcb.inp_ppcb, &tcpcb, sizeof (tcpcb));
234 enter_kvm(&inpcb, &sockb, tcpcb.t_state,
238 enter_kvm(&inpcb, &sockb, 0, "udp");
240 if (istcp && (protos&UDP)) {
248 fetchnetstat_sysctl()
252 struct xinpgen *inpg;
255 struct xinpcb *xip = NULL;
256 struct xtcpcb *xtp = NULL;
260 TAILQ_FOREACH(p, &netcb, chain)
264 } else if (protos&UDP) {
267 error("No protocols to display");
271 for (;idx < 2; idx++) {
272 if (idx == 1 && !(protos&UDP))
274 inpg = (struct xinpgen *)sysctl_dynread(miblist[idx], &lsz);
276 error("sysctl(%s...) failed", miblist[idx]);
280 * We currently do no require a consistent pcb list.
281 * Try to be robust in case of struct size changes
283 cur = ((char *)inpg) + inpg->xig_len;
284 /* There is also a trailing struct xinpgen */
285 end = ((char *)inpg) + lsz - inpg->xig_len;
290 if (idx == 0) { /* TCP */
291 xtp = (struct xtcpcb *)cur;
294 xip = (struct xinpcb *)cur;
297 while (cur + plen <= end) {
298 if (idx == 0) { /* TCP */
299 xtp = (struct xtcpcb *)cur;
300 inpcb = &xtp->xt_inp;
302 xip = (struct xinpcb *)cur;
303 inpcb = &xip->xi_inp;
308 if (inpcb->inp_vflag & INP_IPV4) {
309 if (inet_lnaof(inpcb->inp_laddr) ==
314 else if (inpcb->inp_vflag & INP_IPV6) {
315 if (memcmp(&inpcb->in6p_laddr,
316 &in6addr_any, sizeof(in6addr_any))
322 if (nhosts && !checkhost(inpcb))
324 if (nports && !checkport(inpcb))
326 if (idx == 0) /* TCP */
327 enter_sysctl(inpcb, &xtp->xt_socket,
328 xtp->xt_tp.t_state, "tcp");
330 enter_sysctl(inpcb, &xip->xi_socket, 0, "udp");
337 enter_kvm(inp, so, state, proto)
345 if ((p = enter(inp, state, proto)) != NULL) {
346 p->ni_rcvcc = so->so_rcv.sb_cc;
347 p->ni_sndcc = so->so_snd.sb_cc;
352 enter_sysctl(inp, so, state, proto)
360 if ((p = enter(inp, state, proto)) != NULL) {
361 p->ni_rcvcc = so->so_rcv.sb_cc;
362 p->ni_sndcc = so->so_snd.sb_cc;
367 static struct netinfo *
368 enter(inp, state, proto)
374 struct sockaddr_storage lsa, fsa;
375 struct sockaddr_in *sa4;
377 struct sockaddr_in6 *sa6;
380 memset(&lsa, 0, sizeof(lsa));
381 memset(&fsa, 0, sizeof(fsa));
382 if (inp->inp_vflag & INP_IPV4) {
383 sa4 = (struct sockaddr_in *)&lsa;
384 sa4->sin_addr = inp->inp_laddr;
385 sa4->sin_port = inp->inp_lport;
386 sa4->sin_family = AF_INET;
387 sa4->sin_len = sizeof(struct sockaddr_in);
389 sa4 = (struct sockaddr_in *)&fsa;
390 sa4->sin_addr = inp->inp_faddr;
391 sa4->sin_port = inp->inp_fport;
392 sa4->sin_family = AF_INET;
393 sa4->sin_len = sizeof(struct sockaddr_in);
396 else if (inp->inp_vflag & INP_IPV6) {
397 sa6 = (struct sockaddr_in6 *)&lsa;
398 memcpy(&sa6->sin6_addr, &inp->in6p_laddr,
399 sizeof(struct in6_addr));
400 sa6->sin6_port = inp->inp_lport;
401 sa6->sin6_family = AF_INET6;
402 sa6->sin6_len = sizeof(struct sockaddr_in6);
404 sa6 = (struct sockaddr_in6 *)&fsa;
405 memcpy(&sa6->sin6_addr, &inp->in6p_faddr,
406 sizeof(struct in6_addr));
407 sa6->sin6_port = inp->inp_fport;
408 sa6->sin6_family = AF_INET6;
409 sa6->sin6_len = sizeof(struct sockaddr_in6);
416 * Only take exact matches, any sockets with
417 * previously unbound addresses will be deleted
418 * below in the display routine because they
419 * will appear as ``not seen'' in the kernel
422 TAILQ_FOREACH(p, &netcb, chain) {
423 if (!streq(proto, p->ni_proto))
425 if (p->ni_lsa.ss_family != lsa.ss_family ||
426 memcmp(&p->ni_lsa, &lsa, lsa.ss_len) != 0)
428 if (p->ni_fsa.ss_family == fsa.ss_family &&
429 memcmp(&p->ni_fsa, &fsa, fsa.ss_len) == 0)
433 if ((p = malloc(sizeof(*p))) == NULL) {
434 error("Out of memory");
437 TAILQ_INSERT_HEAD(&netcb, p, chain);
439 memcpy(&p->ni_lsa, &lsa, lsa.ss_len);
440 memcpy(&p->ni_fsa, &fsa, fsa.ss_len);
441 p->ni_proto = strdup(proto);
442 p->ni_flags = NIF_LACHG|NIF_FACHG;
449 /* column locations */
451 #define FADDR LADDR+23
452 #define PROTO FADDR+23
453 #define RCVCC PROTO+6
454 #define SNDCC RCVCC+7
455 #define STATE SNDCC+7
461 if (use_kvm && namelist[X_TCB].n_type == 0)
463 wmove(wnd, 0, 0); wclrtobot(wnd);
464 mvwaddstr(wnd, 0, LADDR, "Local Address");
465 mvwaddstr(wnd, 0, FADDR, "Foreign Address");
466 mvwaddstr(wnd, 0, PROTO, "Proto");
467 mvwaddstr(wnd, 0, RCVCC, "Recv-Q");
468 mvwaddstr(wnd, 0, SNDCC, "Send-Q");
469 mvwaddstr(wnd, 0, STATE, "(state)");
475 struct netinfo *p, *q;
477 const char *family = "";
480 * First, delete any connections that have gone
481 * away and adjust the position of connections
482 * below to reflect the deleted line.
484 p = TAILQ_FIRST(&netcb);
486 if (p->ni_line == -1 || p->ni_seen) {
487 p = TAILQ_NEXT(p, chain);
490 wmove(wnd, p->ni_line, 0); wdeleteln(wnd);
491 TAILQ_FOREACH(q, &netcb, chain)
492 if (q != p && q->ni_line > p->ni_line) {
494 /* this shouldn't be necessary */
495 q->ni_flags |= NIF_LACHG|NIF_FACHG;
498 q = TAILQ_NEXT(p, chain);
499 TAILQ_REMOVE(&netcb, p, chain);
504 * Update existing connections and add new ones.
506 TAILQ_FOREACH(p, &netcb, chain) {
507 if (p->ni_line == -1) {
509 * Add a new entry if possible.
511 if (lastrow > YMAX(wnd))
513 p->ni_line = lastrow++;
514 p->ni_flags |= NIF_LACHG|NIF_FACHG;
516 if (p->ni_flags & NIF_LACHG) {
517 wmove(wnd, p->ni_line, LADDR);
518 inetprint((struct sockaddr *)&p->ni_lsa, p->ni_proto);
519 p->ni_flags &= ~NIF_LACHG;
521 if (p->ni_flags & NIF_FACHG) {
522 wmove(wnd, p->ni_line, FADDR);
523 inetprint((struct sockaddr *)&p->ni_fsa, p->ni_proto);
524 p->ni_flags &= ~NIF_FACHG;
527 family = (p->ni_lsa.ss_family == AF_INET) ? "4" : "6";
529 snprintf(proto, sizeof(proto), "%s%s", p->ni_proto, family);
530 mvwaddstr(wnd, p->ni_line, PROTO, proto);
531 mvwprintw(wnd, p->ni_line, RCVCC, "%6u", p->ni_rcvcc);
532 mvwprintw(wnd, p->ni_line, SNDCC, "%6u", p->ni_sndcc);
533 if (streq(p->ni_proto, "tcp")) {
534 if (p->ni_state < 0 || p->ni_state >= TCP_NSTATES)
535 mvwprintw(wnd, p->ni_line, STATE, "%d",
538 mvwaddstr(wnd, p->ni_line, STATE,
539 tcpstates[p->ni_state]);
543 if (lastrow < YMAX(wnd)) {
544 wmove(wnd, lastrow, 0); wclrtobot(wnd);
545 wmove(wnd, YMAX(wnd), 0); wdeleteln(wnd); /* XXX */
550 * Pretty print an Internet address (net address + port).
551 * If the nflag was specified, use numbers instead of names.
558 struct servent *sp = 0;
562 switch (sa->sa_family) {
564 port = ((struct sockaddr_in *)sa)->sin_port;
568 port = ((struct sockaddr_in6 *)sa)->sin6_port;
575 snprintf(line, sizeof(line), "%.*s.", 16, inetname(sa));
576 cp = index(line, '\0');
578 sp = getservbyport(port, proto);
580 snprintf(cp, sizeof(line) - (cp - line), "%.8s",
581 sp ? sp->s_name : "*");
583 snprintf(cp, sizeof(line) - (cp - line), "%d",
584 ntohs((u_short)port));
585 /* pad to full column to clear any garbage */
586 cp = index(line, '\0');
587 while (cp - line < 22)
594 * Construct an Internet address representation.
595 * If the nflag has been supplied, give
596 * numeric value, otherwise try for symbolic name.
603 static char line[NI_MAXHOST];
609 if (sa->sa_family == AF_INET6) {
610 if (memcmp(&((struct sockaddr_in6 *)sa)->sin6_addr,
611 &in6addr_any, sizeof(in6addr_any)) == 0)
614 getnameinfo(sa, sa->sa_len, line, sizeof(line), NULL, 0,
615 nflag ? NI_NUMERICHOST : 0);
620 in = ((struct sockaddr_in *)sa)->sin_addr;
621 if (!nflag && in.s_addr != INADDR_ANY) {
622 int net = inet_netof(in);
623 int lna = inet_lnaof(in);
625 if (lna == INADDR_ANY) {
626 np = getnetbyaddr(net, AF_INET);
631 hp = gethostbyaddr((char *)&in, sizeof (in), AF_INET);
636 if (in.s_addr == INADDR_ANY)
639 snprintf(line, sizeof(line), "%s", cp);
641 in.s_addr = ntohl(in.s_addr);
642 #define C(x) ((x) & 0xff)
643 snprintf(line, sizeof(line), "%u.%u.%u.%u", C(in.s_addr >> 24),
644 C(in.s_addr >> 16), C(in.s_addr >> 8), C(in.s_addr));
650 cmdnetstat(cmd, args)
651 const char *cmd, *args;
653 if (prefix(cmd, "all")) {
657 if (prefix(cmd, "numbers") || prefix(cmd, "names")) {
661 new = prefix(cmd, "numbers");
664 TAILQ_FOREACH(p, &netcb, chain) {
665 if (p->ni_line == -1)
667 p->ni_flags |= NIF_LACHG|NIF_FACHG;
672 if (!netcmd(cmd, args))