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
36 static char sccsid[] = "@(#)netstat.c 8.1 (Berkeley) 6/6/93";
38 static const char rcsid[] =
39 "$FreeBSD: src/usr.bin/systat/netstat.c,v 1.13 1999/08/30 08:18:08 peter Exp $";
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>
56 #include <netinet/in_pcb.h>
57 #include <netinet/ip_icmp.h>
58 #include <netinet/icmp_var.h>
59 #include <netinet/ip_var.h>
60 #include <netinet/tcp.h>
61 #include <netinet/tcpip.h>
62 #include <netinet/tcp_seq.h>
64 #include <netinet/tcp_fsm.h>
65 #include <netinet/tcp_timer.h>
66 #include <netinet/tcp_var.h>
67 #include <netinet/tcp_debug.h>
68 #include <netinet/udp.h>
69 #include <netinet/udp_var.h>
79 static void enter __P((struct inpcb *, struct socket *, int, char *));
80 static char *inetname __P((struct in_addr));
81 static void inetprint __P((struct in_addr *, int, char *));
83 #define streq(a,b) (strcmp(a,b)==0)
84 #define YMAX(w) ((w)->_maxy-1)
91 return (subwin(stdscr, LINES-5-1, 0, 5, 0));
95 struct netinfo *ni_forw, *ni_prev;
96 short ni_line; /* line on screen */
97 short ni_seen; /* 0 when not present in list */
99 #define NIF_LACHG 0x1 /* local address changed */
100 #define NIF_FACHG 0x2 /* foreign address changed */
101 short ni_state; /* tcp state */
102 char *ni_proto; /* protocol */
103 struct in_addr ni_laddr; /* local address */
104 long ni_lport; /* local port */
105 struct in_addr ni_faddr; /* foreign address */
106 long ni_fport; /* foreign port */
107 long ni_rcvcc; /* rcv buffer character count */
108 long ni_sndcc; /* snd buffer character count */
112 struct netinfo *ni_forw, *ni_prev;
115 static int aflag = 0;
116 static int nflag = 0;
117 static int lastrow = 1;
118 static void enter(), inetprint();
119 static char *inetname();
125 register struct netinfo *p;
129 p = (struct netinfo *)netcb.ni_forw;
130 while (p != (struct netinfo *)&netcb) {
131 if (p->ni_line != -1)
143 static struct nlist namelist[] = {
154 if (kvm_nlist(kd, namelist)) {
158 if (namelist[X_TCB].n_value == 0) {
159 error("No symbols in namelist");
162 netcb.ni_forw = netcb.ni_prev = (struct netinfo *)&netcb;
170 register struct inpcb *next;
171 register struct netinfo *p;
172 struct inpcbhead head;
179 if (namelist[X_TCB].n_value == 0)
181 for (p = netcb.ni_forw; p != (struct netinfo *)&netcb; p = p->ni_forw)
187 else if (protos&UDP) {
192 error("No protocols to display");
196 KREAD(off, &head, sizeof (struct inpcbhead));
197 for (next = head.lh_first; next != NULL; next = inpcb.inp_list.le_next) {
198 KREAD(next, &inpcb, sizeof (inpcb));
199 if (!aflag && inet_lnaof(inpcb.inp_laddr) == INADDR_ANY)
201 if (nhosts && !checkhost(&inpcb))
203 if (nports && !checkport(&inpcb))
205 KREAD(inpcb.inp_socket, &sockb, sizeof (sockb));
207 KREAD(inpcb.inp_ppcb, &tcpcb, sizeof (tcpcb));
208 enter(&inpcb, &sockb, tcpcb.t_state, "tcp");
210 enter(&inpcb, &sockb, 0, "udp");
212 if (istcp && (protos&UDP)) {
220 enter(inp, so, state, proto)
221 register struct inpcb *inp;
222 register struct socket *so;
226 register struct netinfo *p;
229 * Only take exact matches, any sockets with
230 * previously unbound addresses will be deleted
231 * below in the display routine because they
232 * will appear as ``not seen'' in the kernel
235 for (p = netcb.ni_forw; p != (struct netinfo *)&netcb; p = p->ni_forw) {
236 if (!streq(proto, p->ni_proto))
238 if (p->ni_lport != inp->inp_lport ||
239 p->ni_laddr.s_addr != inp->inp_laddr.s_addr)
241 if (p->ni_faddr.s_addr == inp->inp_faddr.s_addr &&
242 p->ni_fport == inp->inp_fport)
245 if (p == (struct netinfo *)&netcb) {
246 if ((p = malloc(sizeof(*p))) == NULL) {
247 error("Out of memory");
250 p->ni_prev = (struct netinfo *)&netcb;
251 p->ni_forw = netcb.ni_forw;
252 netcb.ni_forw->ni_prev = p;
255 p->ni_laddr = inp->inp_laddr;
256 p->ni_lport = inp->inp_lport;
257 p->ni_faddr = inp->inp_faddr;
258 p->ni_fport = inp->inp_fport;
260 p->ni_flags = NIF_LACHG|NIF_FACHG;
262 p->ni_rcvcc = so->so_rcv.sb_cc;
263 p->ni_sndcc = so->so_snd.sb_cc;
268 /* column locations */
270 #define FADDR LADDR+23
271 #define PROTO FADDR+23
272 #define RCVCC PROTO+6
273 #define SNDCC RCVCC+7
274 #define STATE SNDCC+7
280 if (namelist[X_TCB].n_type == 0)
282 wmove(wnd, 0, 0); wclrtobot(wnd);
283 mvwaddstr(wnd, 0, LADDR, "Local Address");
284 mvwaddstr(wnd, 0, FADDR, "Foreign Address");
285 mvwaddstr(wnd, 0, PROTO, "Proto");
286 mvwaddstr(wnd, 0, RCVCC, "Recv-Q");
287 mvwaddstr(wnd, 0, SNDCC, "Send-Q");
288 mvwaddstr(wnd, 0, STATE, "(state)");
294 register struct netinfo *p, *q;
297 * First, delete any connections that have gone
298 * away and adjust the position of connections
299 * below to reflect the deleted line.
302 while (p != (struct netinfo *)&netcb) {
303 if (p->ni_line == -1 || p->ni_seen) {
307 wmove(wnd, p->ni_line, 0); wdeleteln(wnd);
309 for (; q != (struct netinfo *)&netcb; q = q->ni_forw)
310 if (q != p && q->ni_line > p->ni_line) {
312 /* this shouldn't be necessary */
313 q->ni_flags |= NIF_LACHG|NIF_FACHG;
317 p->ni_prev->ni_forw = p->ni_forw;
318 p->ni_forw->ni_prev = p->ni_prev;
323 * Update existing connections and add new ones.
325 for (p = netcb.ni_forw; p != (struct netinfo *)&netcb; p = p->ni_forw) {
326 if (p->ni_line == -1) {
328 * Add a new entry if possible.
330 if (lastrow > YMAX(wnd))
332 p->ni_line = lastrow++;
333 p->ni_flags |= NIF_LACHG|NIF_FACHG;
335 if (p->ni_flags & NIF_LACHG) {
336 wmove(wnd, p->ni_line, LADDR);
337 inetprint(&p->ni_laddr, p->ni_lport, p->ni_proto);
338 p->ni_flags &= ~NIF_LACHG;
340 if (p->ni_flags & NIF_FACHG) {
341 wmove(wnd, p->ni_line, FADDR);
342 inetprint(&p->ni_faddr, p->ni_fport, p->ni_proto);
343 p->ni_flags &= ~NIF_FACHG;
345 mvwaddstr(wnd, p->ni_line, PROTO, p->ni_proto);
346 mvwprintw(wnd, p->ni_line, RCVCC, "%6d", p->ni_rcvcc);
347 mvwprintw(wnd, p->ni_line, SNDCC, "%6d", p->ni_sndcc);
348 if (streq(p->ni_proto, "tcp"))
349 if (p->ni_state < 0 || p->ni_state >= TCP_NSTATES)
350 mvwprintw(wnd, p->ni_line, STATE, "%d",
353 mvwaddstr(wnd, p->ni_line, STATE,
354 tcpstates[p->ni_state]);
357 if (lastrow < YMAX(wnd)) {
358 wmove(wnd, lastrow, 0); wclrtobot(wnd);
359 wmove(wnd, YMAX(wnd), 0); wdeleteln(wnd); /* XXX */
364 * Pretty print an Internet address (net address + port).
365 * If the nflag was specified, use numbers instead of names.
368 inetprint(in, port, proto)
369 register struct in_addr *in;
373 struct servent *sp = 0;
374 char line[80], *cp, *index();
376 snprintf(line, sizeof(line), "%.*s.", 16, inetname(*in));
377 cp = index(line, '\0');
379 sp = getservbyport(port, proto);
381 snprintf(cp, sizeof(line) - (cp - line), "%.8s",
382 sp ? sp->s_name : "*");
384 snprintf(cp, sizeof(line) - (cp - line), "%d",
385 ntohs((u_short)port));
386 /* pad to full column to clear any garbage */
387 cp = index(line, '\0');
388 while (cp - line < 22)
395 * Construct an Internet address representation.
396 * If the nflag has been supplied, give
397 * numeric value, otherwise try for symbolic name.
404 static char line[50];
408 if (!nflag && in.s_addr != INADDR_ANY) {
409 int net = inet_netof(in);
410 int lna = inet_lnaof(in);
412 if (lna == INADDR_ANY) {
413 np = getnetbyaddr(net, AF_INET);
418 hp = gethostbyaddr((char *)&in, sizeof (in), AF_INET);
423 if (in.s_addr == INADDR_ANY)
426 snprintf(line, sizeof(line), "%s", cp);
428 in.s_addr = ntohl(in.s_addr);
429 #define C(x) ((x) & 0xff)
430 snprintf(line, sizeof(line), "%u.%u.%u.%u", C(in.s_addr >> 24),
431 C(in.s_addr >> 16), C(in.s_addr >> 8), C(in.s_addr));
437 cmdnetstat(cmd, args)
440 register struct netinfo *p;
442 if (prefix(cmd, "all")) {
446 if (prefix(cmd, "numbers") || prefix(cmd, "names")) {
449 new = prefix(cmd, "numbers");
453 for (; p != (struct netinfo *)&netcb; p = p->ni_forw) {
454 if (p->ni_line == -1)
456 p->ni_flags |= NIF_LACHG|NIF_FACHG;
461 if (!netcmd(cmd, args))