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1.1 root 1: /*
2: * Copyright (c) 1983 Regents of the University of California.
3: * All rights reserved. The Berkeley software License Agreement
4: * specifies the terms and conditions for redistribution.
5: */
6:
7: #ifndef lint
8: static char sccsid[] = "@(#)inet.c 5.4 (Berkeley) 2/25/86";
9: #endif not lint
10:
11: #include <sys/param.h>
12: #include <sys/socket.h>
13: #include <sys/socketvar.h>
14: #include <sys/mbuf.h>
15: #include <sys/protosw.h>
16:
17: #include <net/route.h>
18: #include <netinet/in.h>
19: #include <netinet/in_systm.h>
20: #include <netinet/in_pcb.h>
21: #include <netinet/ip.h>
22: #include <netinet/ip_icmp.h>
23: #include <netinet/icmp_var.h>
24: #include <netinet/ip_var.h>
25: #include <netinet/tcp.h>
26: #include <netinet/tcpip.h>
27: #include <netinet/tcp_seq.h>
28: #define TCPSTATES
29: #include <netinet/tcp_fsm.h>
30: #include <netinet/tcp_timer.h>
31: #include <netinet/tcp_var.h>
32: #include <netinet/tcp_debug.h>
33: #include <netinet/udp.h>
34: #include <netinet/udp_var.h>
35:
36: #include <netdb.h>
37:
38: struct inpcb inpcb;
39: struct tcpcb tcpcb;
40: struct socket sockb;
41: struct protosw proto;
42: extern int kmem;
43: extern int Aflag;
44: extern int aflag;
45: extern int nflag;
46:
47: static int first = 1;
48: char *inetname();
49:
50: /*
51: * Print a summary of connections related to an Internet
52: * protocol. For TCP, also give state of connection.
53: * Listening processes (aflag) are suppressed unless the
54: * -a (all) flag is specified.
55: */
56: protopr(off, name)
57: off_t off;
58: char *name;
59: {
60: struct inpcb cb;
61: register struct inpcb *prev, *next;
62: int istcp;
63:
64: if (off == 0)
65: return;
66: istcp = strcmp(name, "tcp") == 0;
67: klseek(kmem, off, 0);
68: read(kmem, &cb, sizeof (struct inpcb));
69: inpcb = cb;
70: prev = (struct inpcb *)off;
71: if (inpcb.inp_next == (struct inpcb *)off)
72: return;
73: while (inpcb.inp_next != (struct inpcb *)off) {
74: char *cp;
75:
76: next = inpcb.inp_next;
77: klseek(kmem, (off_t)next, 0);
78: read(kmem, &inpcb, sizeof (inpcb));
79: if (inpcb.inp_prev != prev) {
80: printf("???\n");
81: break;
82: }
83: if (!aflag &&
84: inet_lnaof(inpcb.inp_laddr.s_addr) == INADDR_ANY) {
85: prev = next;
86: continue;
87: }
88: klseek(kmem, (off_t)inpcb.inp_socket, 0);
89: read(kmem, &sockb, sizeof (sockb));
90: if (istcp) {
91: klseek(kmem, (off_t)inpcb.inp_ppcb, 0);
92: read(kmem, &tcpcb, sizeof (tcpcb));
93: }
94: if (first) {
95: printf("Active Internet connections");
96: if (aflag)
97: printf(" (including servers)");
98: putchar('\n');
99: if (Aflag)
100: printf("%-8.8s ", "PCB");
101: printf(Aflag ?
102: "%-5.5s %-6.6s %-6.6s %-18.18s %-18.18s %s\n" :
103: "%-5.5s %-6.6s %-6.6s %-22.22s %-22.22s %s\n",
104: "Proto", "Recv-Q", "Send-Q",
105: "Local Address", "Foreign Address", "(state)");
106: first = 0;
107: }
108: if (Aflag)
109: if (istcp)
110: printf("%8x ", inpcb.inp_ppcb);
111: else
112: printf("%8x ", next);
113: printf("%-5.5s %6d %6d ", name, sockb.so_rcv.sb_cc,
114: sockb.so_snd.sb_cc);
115: inetprint(&inpcb.inp_laddr, inpcb.inp_lport, name);
116: inetprint(&inpcb.inp_faddr, inpcb.inp_fport, name);
117: if (istcp) {
118: if (tcpcb.t_state < 0 || tcpcb.t_state >= TCP_NSTATES)
119: printf(" %d", tcpcb.t_state);
120: else
121: printf(" %s", tcpstates[tcpcb.t_state]);
122: }
123: putchar('\n');
124: prev = next;
125: }
126: }
127:
128: /*
129: * Dump TCP statistics structure.
130: */
131: tcp_stats(off, name)
132: off_t off;
133: char *name;
134: {
135: struct tcpstat tcpstat;
136:
137: if (off == 0)
138: return;
139: klseek(kmem, off, 0);
140: read(kmem, (char *)&tcpstat, sizeof (tcpstat));
141: printf("%s:\n\t%d incomplete header%s\n", name,
142: tcpstat.tcps_hdrops, plural(tcpstat.tcps_hdrops));
143: printf("\t%d bad checksum%s\n",
144: tcpstat.tcps_badsum, plural(tcpstat.tcps_badsum));
145: printf("\t%d bad header offset field%s\n",
146: tcpstat.tcps_badoff, plural(tcpstat.tcps_badoff));
147: #ifdef notdef
148: printf("\t%d bad segment%s\n",
149: tcpstat.tcps_badsegs, plural(tcpstat.badsegs));
150: printf("\t%d unacknowledged packet%s\n",
151: tcpstat.tcps_unack, plural(tcpstat.tcps_unack));
152: #endif
153: }
154:
155: /*
156: * Dump UDP statistics structure.
157: */
158: udp_stats(off, name)
159: off_t off;
160: char *name;
161: {
162: struct udpstat udpstat;
163:
164: if (off == 0)
165: return;
166: klseek(kmem, off, 0);
167: read(kmem, (char *)&udpstat, sizeof (udpstat));
168: printf("%s:\n\t%d incomplete header%s\n", name,
169: udpstat.udps_hdrops, plural(udpstat.udps_hdrops));
170: printf("\t%d bad data length field%s\n",
171: udpstat.udps_badlen, plural(udpstat.udps_badlen));
172: printf("\t%d bad checksum%s\n",
173: udpstat.udps_badsum, plural(udpstat.udps_badsum));
174: }
175:
176: /*
177: * Dump IP statistics structure.
178: */
179: ip_stats(off, name)
180: off_t off;
181: char *name;
182: {
183: struct ipstat ipstat;
184:
185: if (off == 0)
186: return;
187: klseek(kmem, off, 0);
188: read(kmem, (char *)&ipstat, sizeof (ipstat));
189: printf("%s:\n\t%d total packets received\n", name,
190: ipstat.ips_total);
191: printf("\t%d bad header checksum%s\n",
192: ipstat.ips_badsum, plural(ipstat.ips_badsum));
193: printf("\t%d with size smaller than minimum\n", ipstat.ips_tooshort);
194: printf("\t%d with data size < data length\n", ipstat.ips_toosmall);
195: printf("\t%d with header length < data size\n", ipstat.ips_badhlen);
196: printf("\t%d with data length < header length\n", ipstat.ips_badlen);
197: printf("\t%d fragment%s received\n",
198: ipstat.ips_fragments, plural(ipstat.ips_fragments));
199: printf("\t%d fragment%s dropped (dup or out of space)\n",
200: ipstat.ips_fragdropped, plural(ipstat.ips_fragdropped));
201: printf("\t%d fragment%s dropped after timeout\n",
202: ipstat.ips_fragtimeout, plural(ipstat.ips_fragtimeout));
203: printf("\t%d packet%s forwarded\n",
204: ipstat.ips_forward, plural(ipstat.ips_forward));
205: printf("\t%d packet%s not forwardable\n",
206: ipstat.ips_cantforward, plural(ipstat.ips_cantforward));
207: printf("\t%d redirect%s sent\n",
208: ipstat.ips_redirectsent, plural(ipstat.ips_redirectsent));
209: }
210:
211: static char *icmpnames[] = {
212: "echo reply",
213: "#1",
214: "#2",
215: "destination unreachable",
216: "source quench",
217: "routing redirect",
218: "#6",
219: "#7",
220: "echo",
221: "#9",
222: "#10",
223: "time exceeded",
224: "parameter problem",
225: "time stamp",
226: "time stamp reply",
227: "information request",
228: "information request reply",
229: "address mask request",
230: "address mask reply",
231: };
232:
233: /*
234: * Dump ICMP statistics.
235: */
236: icmp_stats(off, name)
237: off_t off;
238: char *name;
239: {
240: struct icmpstat icmpstat;
241: register int i, first;
242:
243: if (off == 0)
244: return;
245: klseek(kmem, off, 0);
246: read(kmem, (char *)&icmpstat, sizeof (icmpstat));
247: printf("%s:\n\t%d call%s to icmp_error\n", name,
248: icmpstat.icps_error, plural(icmpstat.icps_error));
249: printf("\t%d error%s not generated 'cuz old message was icmp\n",
250: icmpstat.icps_oldicmp, plural(icmpstat.icps_oldicmp));
251: for (first = 1, i = 0; i < ICMP_IREQREPLY + 1; i++)
252: if (icmpstat.icps_outhist[i] != 0) {
253: if (first) {
254: printf("\tOutput histogram:\n");
255: first = 0;
256: }
257: printf("\t\t%s: %d\n", icmpnames[i],
258: icmpstat.icps_outhist[i]);
259: }
260: printf("\t%d message%s with bad code fields\n",
261: icmpstat.icps_badcode, plural(icmpstat.icps_badcode));
262: printf("\t%d message%s < minimum length\n",
263: icmpstat.icps_tooshort, plural(icmpstat.icps_tooshort));
264: printf("\t%d bad checksum%s\n",
265: icmpstat.icps_checksum, plural(icmpstat.icps_checksum));
266: printf("\t%d message%s with bad length\n",
267: icmpstat.icps_badlen, plural(icmpstat.icps_badlen));
268: for (first = 1, i = 0; i < ICMP_IREQREPLY + 1; i++)
269: if (icmpstat.icps_inhist[i] != 0) {
270: if (first) {
271: printf("\tInput histogram:\n");
272: first = 0;
273: }
274: printf("\t\t%s: %d\n", icmpnames[i],
275: icmpstat.icps_inhist[i]);
276: }
277: printf("\t%d message response%s generated\n",
278: icmpstat.icps_reflect, plural(icmpstat.icps_reflect));
279: }
280:
281: /*
282: * Pretty print an Internet address (net address + port).
283: * If the nflag was specified, use numbers instead of names.
284: */
285: inetprint(in, port, proto)
286: register struct in_addr *in;
287: int port;
288: char *proto;
289: {
290: struct servent *sp = 0;
291: char line[80], *cp, *index();
292: int width;
293:
294: sprintf(line, "%.*s.", (Aflag && !nflag) ? 12 : 16, inetname(*in));
295: cp = index(line, '\0');
296: if (!nflag && port)
297: sp = getservbyport(port, proto);
298: if (sp || port == 0)
299: sprintf(cp, "%.8s", sp ? sp->s_name : "*");
300: else
301: sprintf(cp, "%d", ntohs((u_short)port));
302: width = Aflag ? 18 : 22;
303: printf(" %-*.*s", width, width, line);
304: }
305:
306: /*
307: * Construct an Internet address representation.
308: * If the nflag has been supplied, give
309: * numeric value, otherwise try for symbolic name.
310: */
311: char *
312: inetname(in)
313: struct in_addr in;
314: {
315: register char *cp;
316: static char line[50];
317: struct hostent *hp;
318: struct netent *np;
319: static char domain[MAXHOSTNAMELEN + 1];
320: static int first = 1;
321:
322: if (first && !nflag) {
323: first = 0;
324: if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
325: (cp = index(domain, '.')))
326: (void) strcpy(domain, cp + 1);
327: else
328: domain[0] = 0;
329: }
330: cp = 0;
331: if (!nflag && in.s_addr != INADDR_ANY) {
332: int net = inet_netof(in);
333: int lna = inet_lnaof(in);
334:
335: if (lna == INADDR_ANY) {
336: np = getnetbyaddr(net, AF_INET);
337: if (np)
338: cp = np->n_name;
339: }
340: if (cp == 0) {
341: hp = gethostbyaddr(&in, sizeof (in), AF_INET);
342: if (hp) {
343: if ((cp = index(hp->h_name, '.')) &&
344: !strcmp(cp + 1, domain))
345: *cp = 0;
346: cp = hp->h_name;
347: }
348: }
349: }
350: if (in.s_addr == INADDR_ANY)
351: strcpy(line, "*");
352: else if (cp)
353: strcpy(line, cp);
354: else {
355: in.s_addr = ntohl(in.s_addr);
356: #define C(x) ((x) & 0xff)
357: sprintf(line, "%u.%u.%u.%u", C(in.s_addr >> 24),
358: C(in.s_addr >> 16), C(in.s_addr >> 8), C(in.s_addr));
359: }
360: return (line);
361: }
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