Annotation of src/usr.bin/netstat/inet.c, Revision 1.2
1.1 deraadt 1: /* $NetBSD: inet.c,v 1.14 1995/10/03 21:42:37 thorpej Exp $ */
2:
3: /*
4: * Copyright (c) 1983, 1988, 1993
5: * The Regents of the University of California. All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: * 3. All advertising materials mentioning features or use of this software
16: * must display the following acknowledgement:
17: * This product includes software developed by the University of
18: * California, Berkeley and its contributors.
19: * 4. Neither the name of the University nor the names of its contributors
20: * may be used to endorse or promote products derived from this software
21: * without specific prior written permission.
22: *
23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33: * SUCH DAMAGE.
34: */
35:
36: #ifndef lint
37: #if 0
38: static char sccsid[] = "from: @(#)inet.c 8.4 (Berkeley) 4/20/94";
39: #else
40: static char *rcsid = "$NetBSD: inet.c,v 1.14 1995/10/03 21:42:37 thorpej Exp $";
41: #endif
42: #endif /* not lint */
43:
44: #include <sys/param.h>
45: #include <sys/queue.h>
46: #include <sys/socket.h>
47: #include <sys/socketvar.h>
48: #include <sys/mbuf.h>
49: #include <sys/protosw.h>
50:
51: #include <net/route.h>
52: #include <netinet/in.h>
53: #include <netinet/in_systm.h>
54: #include <netinet/ip.h>
55: #include <netinet/in_pcb.h>
56: #include <netinet/ip_icmp.h>
57: #include <netinet/icmp_var.h>
58: #include <netinet/igmp_var.h>
59: #include <netinet/ip_var.h>
60: #include <netinet/tcp.h>
61: #include <netinet/tcpip.h>
62: #include <netinet/tcp_seq.h>
63: #define TCPSTATES
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>
70:
71: #include <arpa/inet.h>
72: #include <netdb.h>
73: #include <stdio.h>
74: #include <string.h>
75: #include <unistd.h>
76: #include "netstat.h"
77:
78: struct inpcb inpcb;
79: struct tcpcb tcpcb;
80: struct socket sockb;
81:
82: char *inetname __P((struct in_addr *));
83: void inetprint __P((struct in_addr *, int, char *));
84:
85: /*
86: * Print a summary of connections related to an Internet
87: * protocol. For TCP, also give state of connection.
88: * Listening processes (aflag) are suppressed unless the
89: * -a (all) flag is specified.
90: */
91: void
92: protopr(off, name)
93: u_long off;
94: char *name;
95: {
96: struct inpcbtable table;
97: register struct inpcb *head, *next, *prev;
98: struct inpcb inpcb;
99: int istcp;
100: static int first = 1;
101:
102: if (off == 0)
103: return;
104: istcp = strcmp(name, "tcp") == 0;
105: kread(off, (char *)&table, sizeof table);
106: prev = head =
107: (struct inpcb *)&((struct inpcbtable *)off)->inpt_queue.cqh_first;
108: next = table.inpt_queue.cqh_first;
109:
110: while (next != head) {
111: kread((u_long)next, (char *)&inpcb, sizeof inpcb);
112: if (inpcb.inp_queue.cqe_prev != prev) {
113: printf("???\n");
114: break;
115: }
116: prev = next;
117: next = inpcb.inp_queue.cqe_next;
118:
119: if (!aflag &&
120: inet_lnaof(inpcb.inp_laddr) == INADDR_ANY)
121: continue;
122: kread((u_long)inpcb.inp_socket, (char *)&sockb, sizeof (sockb));
123: if (istcp) {
124: kread((u_long)inpcb.inp_ppcb,
125: (char *)&tcpcb, sizeof (tcpcb));
126: }
127: if (first) {
128: printf("Active Internet connections");
129: if (aflag)
130: printf(" (including servers)");
131: putchar('\n');
132: if (Aflag)
133: printf("%-8.8s ", "PCB");
134: printf(Aflag ?
135: "%-5.5s %-6.6s %-6.6s %-18.18s %-18.18s %s\n" :
136: "%-5.5s %-6.6s %-6.6s %-22.22s %-22.22s %s\n",
137: "Proto", "Recv-Q", "Send-Q",
138: "Local Address", "Foreign Address", "(state)");
139: first = 0;
140: }
141: if (Aflag)
142: if (istcp)
143: printf("%8x ", inpcb.inp_ppcb);
144: else
145: printf("%8x ", prev);
146: printf("%-5.5s %6d %6d ", name, sockb.so_rcv.sb_cc,
147: sockb.so_snd.sb_cc);
148: inetprint(&inpcb.inp_laddr, (int)inpcb.inp_lport, name);
149: inetprint(&inpcb.inp_faddr, (int)inpcb.inp_fport, name);
150: if (istcp) {
151: if (tcpcb.t_state < 0 || tcpcb.t_state >= TCP_NSTATES)
152: printf(" %d", tcpcb.t_state);
153: else
154: printf(" %s", tcpstates[tcpcb.t_state]);
155: }
156: putchar('\n');
157: }
158: }
159:
160: /*
161: * Dump TCP statistics structure.
162: */
163: void
164: tcp_stats(off, name)
165: u_long off;
166: char *name;
167: {
168: struct tcpstat tcpstat;
169:
170: if (off == 0)
171: return;
172: printf ("%s:\n", name);
173: kread(off, (char *)&tcpstat, sizeof (tcpstat));
174:
175: #define p(f, m) if (tcpstat.f || sflag <= 1) \
176: printf(m, tcpstat.f, plural(tcpstat.f))
177: #define p2(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1) \
178: printf(m, tcpstat.f1, plural(tcpstat.f1), tcpstat.f2, plural(tcpstat.f2))
179: #define p3(f, m) if (tcpstat.f || sflag <= 1) \
180: printf(m, tcpstat.f, plurales(tcpstat.f))
181:
182: p(tcps_sndtotal, "\t%d packet%s sent\n");
183: p2(tcps_sndpack,tcps_sndbyte,
184: "\t\t%d data packet%s (%d byte%s)\n");
185: p2(tcps_sndrexmitpack, tcps_sndrexmitbyte,
186: "\t\t%d data packet%s (%d byte%s) retransmitted\n");
187: p2(tcps_sndacks, tcps_delack,
188: "\t\t%d ack-only packet%s (%d delayed)\n");
189: p(tcps_sndurg, "\t\t%d URG only packet%s\n");
190: p(tcps_sndprobe, "\t\t%d window probe packet%s\n");
191: p(tcps_sndwinup, "\t\t%d window update packet%s\n");
192: p(tcps_sndctrl, "\t\t%d control packet%s\n");
193: p(tcps_rcvtotal, "\t%d packet%s received\n");
194: p2(tcps_rcvackpack, tcps_rcvackbyte, "\t\t%d ack%s (for %d byte%s)\n");
195: p(tcps_rcvdupack, "\t\t%d duplicate ack%s\n");
196: p(tcps_rcvacktoomuch, "\t\t%d ack%s for unsent data\n");
197: p2(tcps_rcvpack, tcps_rcvbyte,
198: "\t\t%d packet%s (%d byte%s) received in-sequence\n");
199: p2(tcps_rcvduppack, tcps_rcvdupbyte,
200: "\t\t%d completely duplicate packet%s (%d byte%s)\n");
201: p(tcps_pawsdrop, "\t\t%d old duplicate packet%s\n");
202: p2(tcps_rcvpartduppack, tcps_rcvpartdupbyte,
203: "\t\t%d packet%s with some dup. data (%d byte%s duped)\n");
204: p2(tcps_rcvoopack, tcps_rcvoobyte,
205: "\t\t%d out-of-order packet%s (%d byte%s)\n");
206: p2(tcps_rcvpackafterwin, tcps_rcvbyteafterwin,
207: "\t\t%d packet%s (%d byte%s) of data after window\n");
208: p(tcps_rcvwinprobe, "\t\t%d window probe%s\n");
209: p(tcps_rcvwinupd, "\t\t%d window update packet%s\n");
210: p(tcps_rcvafterclose, "\t\t%d packet%s received after close\n");
211: p(tcps_rcvbadsum, "\t\t%d discarded for bad checksum%s\n");
212: p(tcps_rcvbadoff, "\t\t%d discarded for bad header offset field%s\n");
213: p(tcps_rcvshort, "\t\t%d discarded because packet too short\n");
214: p(tcps_connattempt, "\t%d connection request%s\n");
215: p(tcps_accepts, "\t%d connection accept%s\n");
216: p(tcps_connects, "\t%d connection%s established (including accepts)\n");
217: p2(tcps_closed, tcps_drops,
218: "\t%d connection%s closed (including %d drop%s)\n");
219: p(tcps_conndrops, "\t%d embryonic connection%s dropped\n");
220: p2(tcps_rttupdated, tcps_segstimed,
221: "\t%d segment%s updated rtt (of %d attempt%s)\n");
222: p(tcps_rexmttimeo, "\t%d retransmit timeout%s\n");
223: p(tcps_timeoutdrop, "\t\t%d connection%s dropped by rexmit timeout\n");
224: p(tcps_persisttimeo, "\t%d persist timeout%s\n");
225: p(tcps_keeptimeo, "\t%d keepalive timeout%s\n");
226: p(tcps_keepprobe, "\t\t%d keepalive probe%s sent\n");
227: p(tcps_keepdrops, "\t\t%d connection%s dropped by keepalive\n");
228: p(tcps_predack, "\t%d correct ACK header prediction%s\n");
229: p(tcps_preddat, "\t%d correct data packet header prediction%s\n");
1.2 ! mickey 230: p3(tcps_pcbhashmiss, "\t%d PCB cache miss%s\n");
1.1 deraadt 231: #undef p
232: #undef p2
233: #undef p3
234: }
235:
236: /*
237: * Dump UDP statistics structure.
238: */
239: void
240: udp_stats(off, name)
241: u_long off;
242: char *name;
243: {
244: struct udpstat udpstat;
245: u_long delivered;
246:
247: if (off == 0)
248: return;
249: kread(off, (char *)&udpstat, sizeof (udpstat));
250: printf("%s:\n", name);
251: #define p(f, m) if (udpstat.f || sflag <= 1) \
252: printf(m, udpstat.f, plural(udpstat.f))
253: p(udps_ipackets, "\t%u datagram%s received\n");
254: p(udps_hdrops, "\t%u with incomplete header\n");
255: p(udps_badlen, "\t%u with bad data length field\n");
256: p(udps_badsum, "\t%u with bad checksum\n");
257: p(udps_noport, "\t%u dropped due to no socket\n");
258: p(udps_noportbcast, "\t%u broadcast/multicast datagram%s dropped due to no socket\n");
259: p(udps_fullsock, "\t%u dropped due to full socket buffers\n");
260: delivered = udpstat.udps_ipackets -
261: udpstat.udps_hdrops -
262: udpstat.udps_badlen -
263: udpstat.udps_badsum -
264: udpstat.udps_noport -
265: udpstat.udps_noportbcast -
266: udpstat.udps_fullsock;
267: if (delivered || sflag <= 1)
268: printf("\t%u delivered\n", delivered);
269: p(udps_opackets, "\t%u datagram%s output\n");
270: #undef p
271: }
272:
273: /*
274: * Dump IP statistics structure.
275: */
276: void
277: ip_stats(off, name)
278: u_long off;
279: char *name;
280: {
281: struct ipstat ipstat;
282:
283: if (off == 0)
284: return;
285: kread(off, (char *)&ipstat, sizeof (ipstat));
286: printf("%s:\n", name);
287:
288: #define p(f, m) if (ipstat.f || sflag <= 1) \
289: printf(m, ipstat.f, plural(ipstat.f))
290:
291: p(ips_total, "\t%u total packet%s received\n");
292: p(ips_badsum, "\t%u bad header checksum%s\n");
293: p(ips_toosmall, "\t%u with size smaller than minimum\n");
294: p(ips_tooshort, "\t%u with data size < data length\n");
295: p(ips_badhlen, "\t%u with header length < data size\n");
296: p(ips_badlen, "\t%u with data length < header length\n");
297: p(ips_badoptions, "\t%u with bad options\n");
298: p(ips_badvers, "\t%u with incorrect version number\n");
299: p(ips_fragments, "\t%u fragment%s received\n");
300: p(ips_fragdropped, "\t%u fragment%s dropped (dup or out of space)\n");
301: p(ips_badfrags, "\t%u malformed fragment%s dropped\n");
302: p(ips_fragtimeout, "\t%u fragment%s dropped after timeout\n");
303: p(ips_reassembled, "\t%u packet%s reassembled ok\n");
304: p(ips_delivered, "\t%u packet%s for this host\n");
305: p(ips_noproto, "\t%u packet%s for unknown/unsupported protocol\n");
306: p(ips_forward, "\t%u packet%s forwarded\n");
307: p(ips_cantforward, "\t%u packet%s not forwardable\n");
308: p(ips_redirectsent, "\t%u redirect%s sent\n");
309: p(ips_localout, "\t%u packet%s sent from this host\n");
310: p(ips_rawout, "\t%u packet%s sent with fabricated ip header\n");
311: p(ips_odropped, "\t%u output packet%s dropped due to no bufs, etc.\n");
312: p(ips_noroute, "\t%u output packet%s discarded due to no route\n");
313: p(ips_fragmented, "\t%u output datagram%s fragmented\n");
314: p(ips_ofragments, "\t%u fragment%s created\n");
315: p(ips_cantfrag, "\t%u datagram%s that can't be fragmented\n");
316: #undef p
317: }
318:
319: static char *icmpnames[] = {
320: "echo reply",
321: "#1",
322: "#2",
323: "destination unreachable",
324: "source quench",
325: "routing redirect",
326: "#6",
327: "#7",
328: "echo",
329: "#9",
330: "#10",
331: "time exceeded",
332: "parameter problem",
333: "time stamp",
334: "time stamp reply",
335: "information request",
336: "information request reply",
337: "address mask request",
338: "address mask reply",
339: };
340:
341: /*
342: * Dump ICMP statistics.
343: */
344: void
345: icmp_stats(off, name)
346: u_long off;
347: char *name;
348: {
349: struct icmpstat icmpstat;
350: register int i, first;
351:
352: if (off == 0)
353: return;
354: kread(off, (char *)&icmpstat, sizeof (icmpstat));
355: printf("%s:\n", name);
356:
357: #define p(f, m) if (icmpstat.f || sflag <= 1) \
358: printf(m, icmpstat.f, plural(icmpstat.f))
359:
360: p(icps_error, "\t%u call%s to icmp_error\n");
361: p(icps_oldicmp,
362: "\t%u error%s not generated 'cuz old message was icmp\n");
363: for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++)
364: if (icmpstat.icps_outhist[i] != 0) {
365: if (first) {
366: printf("\tOutput histogram:\n");
367: first = 0;
368: }
369: printf("\t\t%s: %u\n", icmpnames[i],
370: icmpstat.icps_outhist[i]);
371: }
372: p(icps_badcode, "\t%u message%s with bad code fields\n");
373: p(icps_tooshort, "\t%u message%s < minimum length\n");
374: p(icps_checksum, "\t%u bad checksum%s\n");
375: p(icps_badlen, "\t%u message%s with bad length\n");
376: for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++)
377: if (icmpstat.icps_inhist[i] != 0) {
378: if (first) {
379: printf("\tInput histogram:\n");
380: first = 0;
381: }
382: printf("\t\t%s: %u\n", icmpnames[i],
383: icmpstat.icps_inhist[i]);
384: }
385: p(icps_reflect, "\t%u message response%s generated\n");
386: #undef p
387: }
388:
389: /*
390: * Dump IGMP statistics structure.
391: */
392: void
393: igmp_stats(off, name)
394: u_long off;
395: char *name;
396: {
397: struct igmpstat igmpstat;
398:
399: if (off == 0)
400: return;
401: kread(off, (char *)&igmpstat, sizeof (igmpstat));
402: printf("%s:\n", name);
403:
404: #define p(f, m) if (igmpstat.f || sflag <= 1) \
405: printf(m, igmpstat.f, plural(igmpstat.f))
406: #define py(f, m) if (igmpstat.f || sflag <= 1) \
407: printf(m, igmpstat.f, igmpstat.f != 1 ? "ies" : "y")
408: p(igps_rcv_total, "\t%u message%s received\n");
409: p(igps_rcv_tooshort, "\t%u message%s received with too few bytes\n");
410: p(igps_rcv_badsum, "\t%u message%s received with bad checksum\n");
411: py(igps_rcv_queries, "\t%u membership quer%s received\n");
412: py(igps_rcv_badqueries, "\t%u membership quer%s received with invalid field(s)\n");
413: p(igps_rcv_reports, "\t%u membership report%s received\n");
414: p(igps_rcv_badreports, "\t%u membership report%s received with invalid field(s)\n");
415: p(igps_rcv_ourreports, "\t%u membership report%s received for groups to which we belong\n");
416: p(igps_snd_reports, "\t%u membership report%s sent\n");
417: #undef p
418: #undef py
419: }
420:
421: /*
422: * Pretty print an Internet address (net address + port).
423: * If the nflag was specified, use numbers instead of names.
424: */
425: void
426: inetprint(in, port, proto)
427: register struct in_addr *in;
428: int port;
429: char *proto;
430: {
431: struct servent *sp = 0;
432: char line[80], *cp;
433: int width;
434:
435: sprintf(line, "%.*s.", (Aflag && !nflag) ? 12 : 16, inetname(in));
436: cp = index(line, '\0');
437: if (!nflag && port)
438: sp = getservbyport((int)port, proto);
439: if (sp || port == 0)
440: sprintf(cp, "%.8s", sp ? sp->s_name : "*");
441: else
442: sprintf(cp, "%d", ntohs((u_short)port));
443: width = Aflag ? 18 : 22;
444: printf(" %-*.*s", width, width, line);
445: }
446:
447: /*
448: * Construct an Internet address representation.
449: * If the nflag has been supplied, give
450: * numeric value, otherwise try for symbolic name.
451: */
452: char *
453: inetname(inp)
454: struct in_addr *inp;
455: {
456: register char *cp;
457: static char line[50];
458: struct hostent *hp;
459: struct netent *np;
460: static char domain[MAXHOSTNAMELEN + 1];
461: static int first = 1;
462:
463: if (first && !nflag) {
464: first = 0;
465: if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
466: (cp = index(domain, '.')))
467: (void) strcpy(domain, cp + 1);
468: else
469: domain[0] = 0;
470: }
471: cp = 0;
472: if (!nflag && inp->s_addr != INADDR_ANY) {
473: int net = inet_netof(*inp);
474: int lna = inet_lnaof(*inp);
475:
476: if (lna == INADDR_ANY) {
477: np = getnetbyaddr(net, AF_INET);
478: if (np)
479: cp = np->n_name;
480: }
481: if (cp == 0) {
482: hp = gethostbyaddr((char *)inp, sizeof (*inp), AF_INET);
483: if (hp) {
484: if ((cp = index(hp->h_name, '.')) &&
485: !strcmp(cp + 1, domain))
486: *cp = 0;
487: cp = hp->h_name;
488: }
489: }
490: }
491: if (inp->s_addr == INADDR_ANY)
492: strcpy(line, "*");
493: else if (cp)
494: strcpy(line, cp);
495: else {
496: inp->s_addr = ntohl(inp->s_addr);
497: #define C(x) ((x) & 0xff)
498: sprintf(line, "%u.%u.%u.%u", C(inp->s_addr >> 24),
499: C(inp->s_addr >> 16), C(inp->s_addr >> 8), C(inp->s_addr));
500: }
501: return (line);
502: }
![[BACK]](/icons/back.gif){kind=icon}
Return to inet.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / netstat