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1.1 root 1: /*
2: * Copyright (c) 1983, 1988 Regents of the University of California.
3: * All rights reserved.
4: *
5: * Redistribution and use in source and binary forms are permitted
6: * provided that the above copyright notice and this paragraph are
7: * duplicated in all such forms and that any documentation,
8: * advertising materials, and other materials related to such
9: * distribution and use acknowledge that the software was developed
10: * by the University of California, Berkeley. The name of the
11: * University may not be used to endorse or promote products derived
12: * from this software without specific prior written permission.
13: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
14: * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
15: * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
16: */
17:
18: #ifndef lint
19: static char sccsid[] = "@(#)inet.c 5.11 (Berkeley) 6/29/88";
20: #endif /* not lint */
21:
22: #include <strings.h>
23: #include <stdio.h>
24:
25: #include <sys/param.h>
26: #include <sys/socket.h>
27: #include <sys/socketvar.h>
28: #include <sys/mbuf.h>
29: #include <sys/protosw.h>
30:
31: #include <net/route.h>
32: #include <netinet/in.h>
33: #include <netinet/in_systm.h>
34: #include <netinet/in_pcb.h>
35: #include <netinet/ip.h>
36: #include <netinet/ip_icmp.h>
37: #include <netinet/icmp_var.h>
38: #include <netinet/ip_var.h>
39: #include <netinet/tcp.h>
40: #include <netinet/tcpip.h>
41: #include <netinet/tcp_seq.h>
42: #define TCPSTATES
43: #include <netinet/tcp_fsm.h>
44: #include <netinet/tcp_timer.h>
45: #include <netinet/tcp_var.h>
46: #include <netinet/tcp_debug.h>
47: #include <netinet/udp.h>
48: #include <netinet/udp_var.h>
49:
50: #include <netdb.h>
51:
52: struct inpcb inpcb;
53: struct tcpcb tcpcb;
54: struct socket sockb;
55: extern int kmem;
56: extern int Aflag;
57: extern int aflag;
58: extern int nflag;
59: extern char *plural();
60:
61: char *inetname();
62:
63: /*
64: * Print a summary of connections related to an Internet
65: * protocol. For TCP, also give state of connection.
66: * Listening processes (aflag) are suppressed unless the
67: * -a (all) flag is specified.
68: */
69: protopr(off, name)
70: off_t off;
71: char *name;
72: {
73: struct inpcb cb;
74: register struct inpcb *prev, *next;
75: int istcp;
76: static int first = 1;
77:
78: if (off == 0)
79: return;
80: istcp = strcmp(name, "tcp") == 0;
81: klseek(kmem, off, 0);
82: read(kmem, (char *)&cb, sizeof (struct inpcb));
83: inpcb = cb;
84: prev = (struct inpcb *)off;
85: if (inpcb.inp_next == (struct inpcb *)off)
86: return;
87: while (inpcb.inp_next != (struct inpcb *)off) {
88:
89: next = inpcb.inp_next;
90: klseek(kmem, (off_t)next, 0);
91: read(kmem, (char *)&inpcb, sizeof (inpcb));
92: if (inpcb.inp_prev != prev) {
93: printf("???\n");
94: break;
95: }
96: if (!aflag &&
97: inet_lnaof(inpcb.inp_laddr) == INADDR_ANY) {
98: prev = next;
99: continue;
100: }
101: klseek(kmem, (off_t)inpcb.inp_socket, 0);
102: read(kmem, (char *)&sockb, sizeof (sockb));
103: if (istcp) {
104: klseek(kmem, (off_t)inpcb.inp_ppcb, 0);
105: read(kmem, (char *)&tcpcb, sizeof (tcpcb));
106: }
107: if (first) {
108: printf("Active Internet connections");
109: if (aflag)
110: printf(" (including servers)");
111: putchar('\n');
112: if (Aflag)
113: printf("%-8.8s ", "PCB");
114: printf(Aflag ?
115: "%-5.5s %-6.6s %-6.6s %-18.18s %-18.18s %s\n" :
116: "%-5.5s %-6.6s %-6.6s %-22.22s %-22.22s %s\n",
117: "Proto", "Recv-Q", "Send-Q",
118: "Local Address", "Foreign Address", "(state)");
119: first = 0;
120: }
121: if (Aflag)
122: if (istcp)
123: printf("%8x ", inpcb.inp_ppcb);
124: else
125: printf("%8x ", next);
126: printf("%-5.5s %6d %6d ", name, sockb.so_rcv.sb_cc,
127: sockb.so_snd.sb_cc);
128: inetprint(&inpcb.inp_laddr, inpcb.inp_lport, name);
129: inetprint(&inpcb.inp_faddr, inpcb.inp_fport, name);
130: if (istcp) {
131: if (tcpcb.t_state < 0 || tcpcb.t_state >= TCP_NSTATES)
132: printf(" %d", tcpcb.t_state);
133: else
134: printf(" %s", tcpstates[tcpcb.t_state]);
135: }
136: putchar('\n');
137: prev = next;
138: }
139: }
140:
141: /*
142: * Dump TCP statistics structure.
143: */
144: tcp_stats(off, name)
145: off_t off;
146: char *name;
147: {
148: struct tcpstat tcpstat;
149:
150: if (off == 0)
151: return;
152: printf ("%s:\n", name);
153: klseek(kmem, off, 0);
154: read(kmem, (char *)&tcpstat, sizeof (tcpstat));
155:
156: #define p(f, m) printf(m, tcpstat.f, plural(tcpstat.f))
157: #define p2(f1, f2, m) printf(m, tcpstat.f1, plural(tcpstat.f1), tcpstat.f2, plural(tcpstat.f2))
158:
159: p(tcps_sndtotal, "\t%d packet%s sent\n");
160: p2(tcps_sndpack,tcps_sndbyte,
161: "\t\t%d data packet%s (%d byte%s)\n");
162: p2(tcps_sndrexmitpack, tcps_sndrexmitbyte,
163: "\t\t%d data packet%s (%d byte%s) retransmitted\n");
164: p2(tcps_sndacks, tcps_delack,
165: "\t\t%d ack-only packet%s (%d delayed)\n");
166: p(tcps_sndurg, "\t\t%d URG only packet%s\n");
167: p(tcps_sndprobe, "\t\t%d window probe packet%s\n");
168: p(tcps_sndwinup, "\t\t%d window update packet%s\n");
169: p(tcps_sndctrl, "\t\t%d control packet%s\n");
170: p(tcps_rcvtotal, "\t%d packet%s received\n");
171: p2(tcps_rcvackpack, tcps_rcvackbyte, "\t\t%d ack%s (for %d byte%s)\n");
172: p(tcps_rcvdupack, "\t\t%d duplicate ack%s\n");
173: p(tcps_rcvacktoomuch, "\t\t%d ack%s for unsent data\n");
174: p2(tcps_rcvpack, tcps_rcvbyte,
175: "\t\t%d packet%s (%d byte%s) received in-sequence\n");
176: p2(tcps_rcvduppack, tcps_rcvdupbyte,
177: "\t\t%d completely duplicate packet%s (%d byte%s)\n");
178: p2(tcps_rcvpartduppack, tcps_rcvpartdupbyte,
179: "\t\t%d packet%s with some dup. data (%d byte%s duped)\n");
180: p2(tcps_rcvoopack, tcps_rcvoobyte,
181: "\t\t%d out-of-order packet%s (%d byte%s)\n");
182: p2(tcps_rcvpackafterwin, tcps_rcvbyteafterwin,
183: "\t\t%d packet%s (%d byte%s) of data after window\n");
184: p(tcps_rcvwinprobe, "\t\t%d window probe%s\n");
185: p(tcps_rcvwinupd, "\t\t%d window update packet%s\n");
186: p(tcps_rcvafterclose, "\t\t%d packet%s received after close\n");
187: p(tcps_rcvbadsum, "\t\t%d discarded for bad checksum%s\n");
188: p(tcps_rcvbadoff, "\t\t%d discarded for bad header offset field%s\n");
189: p(tcps_rcvshort, "\t\t%d discarded because packet too short\n");
190: p(tcps_connattempt, "\t%d connection request%s\n");
191: p(tcps_accepts, "\t%d connection accept%s\n");
192: p(tcps_connects, "\t%d connection%s established (including accepts)\n");
193: p2(tcps_closed, tcps_drops,
194: "\t%d connection%s closed (including %d drop%s)\n");
195: p(tcps_conndrops, "\t%d embryonic connection%s dropped\n");
196: p2(tcps_rttupdated, tcps_segstimed,
197: "\t%d segment%s updated rtt (of %d attempt%s)\n");
198: p(tcps_rexmttimeo, "\t%d retransmit timeout%s\n");
199: p(tcps_timeoutdrop, "\t\t%d connection%s dropped by rexmit timeout\n");
200: p(tcps_persisttimeo, "\t%d persist timeout%s\n");
201: p(tcps_keeptimeo, "\t%d keepalive timeout%s\n");
202: p(tcps_keepprobe, "\t\t%d keepalive probe%s sent\n");
203: p(tcps_keepdrops, "\t\t%d connection%s dropped by keepalive\n");
204: #undef p
205: #undef p2
206: }
207:
208: /*
209: * Dump UDP statistics structure.
210: */
211: udp_stats(off, name)
212: off_t off;
213: char *name;
214: {
215: struct udpstat udpstat;
216:
217: if (off == 0)
218: return;
219: klseek(kmem, off, 0);
220: read(kmem, (char *)&udpstat, sizeof (udpstat));
221: printf("%s:\n\t%u incomplete header%s\n", name,
222: udpstat.udps_hdrops, plural(udpstat.udps_hdrops));
223: printf("\t%u bad data length field%s\n",
224: udpstat.udps_badlen, plural(udpstat.udps_badlen));
225: printf("\t%u bad checksum%s\n",
226: udpstat.udps_badsum, plural(udpstat.udps_badsum));
227: }
228:
229: /*
230: * Dump IP statistics structure.
231: */
232: ip_stats(off, name)
233: off_t off;
234: char *name;
235: {
236: struct ipstat ipstat;
237:
238: if (off == 0)
239: return;
240: klseek(kmem, off, 0);
241: read(kmem, (char *)&ipstat, sizeof (ipstat));
242: printf("%s:\n\t%u total packets received\n", name,
243: ipstat.ips_total);
244: printf("\t%u bad header checksum%s\n",
245: ipstat.ips_badsum, plural(ipstat.ips_badsum));
246: printf("\t%u with size smaller than minimum\n", ipstat.ips_tooshort);
247: printf("\t%u with data size < data length\n", ipstat.ips_toosmall);
248: printf("\t%u with header length < data size\n", ipstat.ips_badhlen);
249: printf("\t%u with data length < header length\n", ipstat.ips_badlen);
250: printf("\t%u fragment%s received\n",
251: ipstat.ips_fragments, plural(ipstat.ips_fragments));
252: printf("\t%u fragment%s dropped (dup or out of space)\n",
253: ipstat.ips_fragdropped, plural(ipstat.ips_fragdropped));
254: printf("\t%u fragment%s dropped after timeout\n",
255: ipstat.ips_fragtimeout, plural(ipstat.ips_fragtimeout));
256: printf("\t%u packet%s forwarded\n",
257: ipstat.ips_forward, plural(ipstat.ips_forward));
258: printf("\t%u packet%s not forwardable\n",
259: ipstat.ips_cantforward, plural(ipstat.ips_cantforward));
260: printf("\t%u redirect%s sent\n",
261: ipstat.ips_redirectsent, plural(ipstat.ips_redirectsent));
262: }
263:
264: static char *icmpnames[] = {
265: "echo reply",
266: "#1",
267: "#2",
268: "destination unreachable",
269: "source quench",
270: "routing redirect",
271: "#6",
272: "#7",
273: "echo",
274: "#9",
275: "#10",
276: "time exceeded",
277: "parameter problem",
278: "time stamp",
279: "time stamp reply",
280: "information request",
281: "information request reply",
282: "address mask request",
283: "address mask reply",
284: };
285:
286: /*
287: * Dump ICMP statistics.
288: */
289: icmp_stats(off, name)
290: off_t off;
291: char *name;
292: {
293: struct icmpstat icmpstat;
294: register int i, first;
295:
296: if (off == 0)
297: return;
298: klseek(kmem, off, 0);
299: read(kmem, (char *)&icmpstat, sizeof (icmpstat));
300: printf("%s:\n\t%u call%s to icmp_error\n", name,
301: icmpstat.icps_error, plural(icmpstat.icps_error));
302: printf("\t%u error%s not generated 'cuz old message was icmp\n",
303: icmpstat.icps_oldicmp, plural(icmpstat.icps_oldicmp));
304: for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++)
305: if (icmpstat.icps_outhist[i] != 0) {
306: if (first) {
307: printf("\tOutput histogram:\n");
308: first = 0;
309: }
310: printf("\t\t%s: %u\n", icmpnames[i],
311: icmpstat.icps_outhist[i]);
312: }
313: printf("\t%u message%s with bad code fields\n",
314: icmpstat.icps_badcode, plural(icmpstat.icps_badcode));
315: printf("\t%u message%s < minimum length\n",
316: icmpstat.icps_tooshort, plural(icmpstat.icps_tooshort));
317: printf("\t%u bad checksum%s\n",
318: icmpstat.icps_checksum, plural(icmpstat.icps_checksum));
319: printf("\t%u message%s with bad length\n",
320: icmpstat.icps_badlen, plural(icmpstat.icps_badlen));
321: for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++)
322: if (icmpstat.icps_inhist[i] != 0) {
323: if (first) {
324: printf("\tInput histogram:\n");
325: first = 0;
326: }
327: printf("\t\t%s: %u\n", icmpnames[i],
328: icmpstat.icps_inhist[i]);
329: }
330: printf("\t%u message response%s generated\n",
331: icmpstat.icps_reflect, plural(icmpstat.icps_reflect));
332: }
333:
334: /*
335: * Pretty print an Internet address (net address + port).
336: * If the nflag was specified, use numbers instead of names.
337: */
338: inetprint(in, port, proto)
339: register struct in_addr *in;
340: u_short port;
341: char *proto;
342: {
343: struct servent *sp = 0;
344: char line[80], *cp, *index();
345: int width;
346:
347: sprintf(line, "%.*s.", (Aflag && !nflag) ? 12 : 16, inetname(*in));
348: cp = index(line, '\0');
349: if (!nflag && port)
350: sp = getservbyport((int)port, proto);
351: if (sp || port == 0)
352: sprintf(cp, "%.8s", sp ? sp->s_name : "*");
353: else
354: sprintf(cp, "%d", ntohs((u_short)port));
355: width = Aflag ? 18 : 22;
356: printf(" %-*.*s", width, width, line);
357: }
358:
359: /*
360: * Construct an Internet address representation.
361: * If the nflag has been supplied, give
362: * numeric value, otherwise try for symbolic name.
363: */
364: char *
365: inetname(in)
366: struct in_addr in;
367: {
368: register char *cp;
369: static char line[50];
370: struct hostent *hp;
371: struct netent *np;
372: static char domain[MAXHOSTNAMELEN + 1];
373: static int first = 1;
374:
375: if (first && !nflag) {
376: first = 0;
377: if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
378: (cp = index(domain, '.')))
379: (void) strcpy(domain, cp + 1);
380: else
381: domain[0] = 0;
382: }
383: cp = 0;
384: if (!nflag && in.s_addr != INADDR_ANY) {
385: int net = inet_netof(in);
386: int lna = inet_lnaof(in);
387:
388: if (lna == INADDR_ANY) {
389: np = getnetbyaddr(net, AF_INET);
390: if (np)
391: cp = np->n_name;
392: }
393: if (cp == 0) {
394: hp = gethostbyaddr((char *)&in, sizeof (in), AF_INET);
395: if (hp) {
396: if ((cp = index(hp->h_name, '.')) &&
397: !strcmp(cp + 1, domain))
398: *cp = 0;
399: cp = hp->h_name;
400: }
401: }
402: }
403: if (in.s_addr == INADDR_ANY)
404: strcpy(line, "*");
405: else if (cp)
406: strcpy(line, cp);
407: else {
408: in.s_addr = ntohl(in.s_addr);
409: #define C(x) ((x) & 0xff)
410: sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24),
411: C(in.s_addr >> 16), C(in.s_addr >> 8), C(in.s_addr));
412: }
413: return (line);
414: }
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