Annotation of src/usr.bin/netstat/inet.c, Revision 1.7
1.7 ! deraadt 1: /* $OpenBSD: inet.c,v 1.6 1997/02/16 10:26:36 deraadt Exp $ */
1.1 deraadt 2: /* $NetBSD: inet.c,v 1.14 1995/10/03 21:42:37 thorpej Exp $ */
3:
4: /*
5: * Copyright (c) 1983, 1988, 1993
6: * The Regents of the University of California. All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the University of
19: * California, Berkeley and its contributors.
20: * 4. Neither the name of the University nor the names of its contributors
21: * may be used to endorse or promote products derived from this software
22: * without specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
37: #ifndef lint
38: #if 0
39: static char sccsid[] = "from: @(#)inet.c 8.4 (Berkeley) 4/20/94";
40: #else
1.7 ! deraadt 41: static char *rcsid = "$OpenBSD: inet.c,v 1.6 1997/02/16 10:26:36 deraadt Exp $";
1.1 deraadt 42: #endif
43: #endif /* not lint */
44:
45: #include <sys/param.h>
46: #include <sys/queue.h>
47: #include <sys/socket.h>
48: #include <sys/socketvar.h>
49: #include <sys/mbuf.h>
50: #include <sys/protosw.h>
51:
52: #include <net/route.h>
53: #include <netinet/in.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/igmp_var.h>
60: #include <netinet/ip_var.h>
61: #include <netinet/tcp.h>
62: #include <netinet/tcpip.h>
63: #include <netinet/tcp_seq.h>
64: #define TCPSTATES
65: #include <netinet/tcp_fsm.h>
66: #include <netinet/tcp_timer.h>
67: #include <netinet/tcp_var.h>
68: #include <netinet/tcp_debug.h>
69: #include <netinet/udp.h>
70: #include <netinet/udp_var.h>
71:
72: #include <arpa/inet.h>
73: #include <netdb.h>
74: #include <stdio.h>
75: #include <string.h>
76: #include <unistd.h>
77: #include "netstat.h"
78:
1.5 deraadt 79: #include <rpc/rpc.h>
80: #include <rpc/pmap_prot.h>
81: #include <rpc/pmap_clnt.h>
82:
1.1 deraadt 83: struct inpcb inpcb;
84: struct tcpcb tcpcb;
85: struct socket sockb;
86:
87: char *inetname __P((struct in_addr *));
1.5 deraadt 88: void inetprint __P((struct in_addr *, int, char *, int));
1.1 deraadt 89:
90: /*
91: * Print a summary of connections related to an Internet
92: * protocol. For TCP, also give state of connection.
93: * Listening processes (aflag) are suppressed unless the
94: * -a (all) flag is specified.
95: */
96: void
97: protopr(off, name)
98: u_long off;
99: char *name;
100: {
101: struct inpcbtable table;
102: register struct inpcb *head, *next, *prev;
103: struct inpcb inpcb;
104: int istcp;
105: static int first = 1;
106:
107: if (off == 0)
108: return;
109: istcp = strcmp(name, "tcp") == 0;
110: kread(off, (char *)&table, sizeof table);
111: prev = head =
112: (struct inpcb *)&((struct inpcbtable *)off)->inpt_queue.cqh_first;
113: next = table.inpt_queue.cqh_first;
114:
115: while (next != head) {
116: kread((u_long)next, (char *)&inpcb, sizeof inpcb);
117: if (inpcb.inp_queue.cqe_prev != prev) {
118: printf("???\n");
119: break;
120: }
121: prev = next;
122: next = inpcb.inp_queue.cqe_next;
123:
124: if (!aflag &&
125: inet_lnaof(inpcb.inp_laddr) == INADDR_ANY)
126: continue;
127: kread((u_long)inpcb.inp_socket, (char *)&sockb, sizeof (sockb));
128: if (istcp) {
129: kread((u_long)inpcb.inp_ppcb,
130: (char *)&tcpcb, sizeof (tcpcb));
131: }
132: if (first) {
133: printf("Active Internet connections");
134: if (aflag)
135: printf(" (including servers)");
136: putchar('\n');
137: if (Aflag)
138: printf("%-8.8s ", "PCB");
139: printf(Aflag ?
140: "%-5.5s %-6.6s %-6.6s %-18.18s %-18.18s %s\n" :
141: "%-5.5s %-6.6s %-6.6s %-22.22s %-22.22s %s\n",
142: "Proto", "Recv-Q", "Send-Q",
143: "Local Address", "Foreign Address", "(state)");
144: first = 0;
145: }
146: if (Aflag)
147: if (istcp)
148: printf("%8x ", inpcb.inp_ppcb);
149: else
150: printf("%8x ", prev);
151: printf("%-5.5s %6d %6d ", name, sockb.so_rcv.sb_cc,
152: sockb.so_snd.sb_cc);
1.5 deraadt 153: inetprint(&inpcb.inp_laddr, (int)inpcb.inp_lport, name, 1);
154: inetprint(&inpcb.inp_faddr, (int)inpcb.inp_fport, name, 0);
1.1 deraadt 155: if (istcp) {
156: if (tcpcb.t_state < 0 || tcpcb.t_state >= TCP_NSTATES)
157: printf(" %d", tcpcb.t_state);
158: else
159: printf(" %s", tcpstates[tcpcb.t_state]);
160: }
161: putchar('\n');
162: }
163: }
164:
165: /*
166: * Dump TCP statistics structure.
167: */
168: void
169: tcp_stats(off, name)
170: u_long off;
171: char *name;
172: {
173: struct tcpstat tcpstat;
174:
175: if (off == 0)
176: return;
177: printf ("%s:\n", name);
178: kread(off, (char *)&tcpstat, sizeof (tcpstat));
179:
180: #define p(f, m) if (tcpstat.f || sflag <= 1) \
181: printf(m, tcpstat.f, plural(tcpstat.f))
182: #define p2(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1) \
183: printf(m, tcpstat.f1, plural(tcpstat.f1), tcpstat.f2, plural(tcpstat.f2))
184: #define p3(f, m) if (tcpstat.f || sflag <= 1) \
185: printf(m, tcpstat.f, plurales(tcpstat.f))
186:
187: p(tcps_sndtotal, "\t%d packet%s sent\n");
188: p2(tcps_sndpack,tcps_sndbyte,
189: "\t\t%d data packet%s (%d byte%s)\n");
190: p2(tcps_sndrexmitpack, tcps_sndrexmitbyte,
191: "\t\t%d data packet%s (%d byte%s) retransmitted\n");
192: p2(tcps_sndacks, tcps_delack,
193: "\t\t%d ack-only packet%s (%d delayed)\n");
194: p(tcps_sndurg, "\t\t%d URG only packet%s\n");
195: p(tcps_sndprobe, "\t\t%d window probe packet%s\n");
196: p(tcps_sndwinup, "\t\t%d window update packet%s\n");
197: p(tcps_sndctrl, "\t\t%d control packet%s\n");
198: p(tcps_rcvtotal, "\t%d packet%s received\n");
199: p2(tcps_rcvackpack, tcps_rcvackbyte, "\t\t%d ack%s (for %d byte%s)\n");
200: p(tcps_rcvdupack, "\t\t%d duplicate ack%s\n");
201: p(tcps_rcvacktoomuch, "\t\t%d ack%s for unsent data\n");
202: p2(tcps_rcvpack, tcps_rcvbyte,
203: "\t\t%d packet%s (%d byte%s) received in-sequence\n");
204: p2(tcps_rcvduppack, tcps_rcvdupbyte,
205: "\t\t%d completely duplicate packet%s (%d byte%s)\n");
206: p(tcps_pawsdrop, "\t\t%d old duplicate packet%s\n");
207: p2(tcps_rcvpartduppack, tcps_rcvpartdupbyte,
208: "\t\t%d packet%s with some dup. data (%d byte%s duped)\n");
209: p2(tcps_rcvoopack, tcps_rcvoobyte,
210: "\t\t%d out-of-order packet%s (%d byte%s)\n");
211: p2(tcps_rcvpackafterwin, tcps_rcvbyteafterwin,
212: "\t\t%d packet%s (%d byte%s) of data after window\n");
213: p(tcps_rcvwinprobe, "\t\t%d window probe%s\n");
214: p(tcps_rcvwinupd, "\t\t%d window update packet%s\n");
215: p(tcps_rcvafterclose, "\t\t%d packet%s received after close\n");
216: p(tcps_rcvbadsum, "\t\t%d discarded for bad checksum%s\n");
217: p(tcps_rcvbadoff, "\t\t%d discarded for bad header offset field%s\n");
218: p(tcps_rcvshort, "\t\t%d discarded because packet too short\n");
219: p(tcps_connattempt, "\t%d connection request%s\n");
220: p(tcps_accepts, "\t%d connection accept%s\n");
221: p(tcps_connects, "\t%d connection%s established (including accepts)\n");
222: p2(tcps_closed, tcps_drops,
223: "\t%d connection%s closed (including %d drop%s)\n");
224: p(tcps_conndrops, "\t%d embryonic connection%s dropped\n");
225: p2(tcps_rttupdated, tcps_segstimed,
226: "\t%d segment%s updated rtt (of %d attempt%s)\n");
227: p(tcps_rexmttimeo, "\t%d retransmit timeout%s\n");
228: p(tcps_timeoutdrop, "\t\t%d connection%s dropped by rexmit timeout\n");
229: p(tcps_persisttimeo, "\t%d persist timeout%s\n");
230: p(tcps_keeptimeo, "\t%d keepalive timeout%s\n");
231: p(tcps_keepprobe, "\t\t%d keepalive probe%s sent\n");
232: p(tcps_keepdrops, "\t\t%d connection%s dropped by keepalive\n");
233: p(tcps_predack, "\t%d correct ACK header prediction%s\n");
234: p(tcps_preddat, "\t%d correct data packet header prediction%s\n");
1.2 mickey 235: p3(tcps_pcbhashmiss, "\t%d PCB cache miss%s\n");
1.1 deraadt 236: #undef p
237: #undef p2
238: #undef p3
239: }
240:
241: /*
242: * Dump UDP statistics structure.
243: */
244: void
245: udp_stats(off, name)
246: u_long off;
247: char *name;
248: {
249: struct udpstat udpstat;
250: u_long delivered;
251:
252: if (off == 0)
253: return;
254: kread(off, (char *)&udpstat, sizeof (udpstat));
255: printf("%s:\n", name);
256: #define p(f, m) if (udpstat.f || sflag <= 1) \
257: printf(m, udpstat.f, plural(udpstat.f))
258: p(udps_ipackets, "\t%u datagram%s received\n");
259: p(udps_hdrops, "\t%u with incomplete header\n");
260: p(udps_badlen, "\t%u with bad data length field\n");
261: p(udps_badsum, "\t%u with bad checksum\n");
262: p(udps_noport, "\t%u dropped due to no socket\n");
263: p(udps_noportbcast, "\t%u broadcast/multicast datagram%s dropped due to no socket\n");
264: p(udps_fullsock, "\t%u dropped due to full socket buffers\n");
265: delivered = udpstat.udps_ipackets -
266: udpstat.udps_hdrops -
267: udpstat.udps_badlen -
268: udpstat.udps_badsum -
269: udpstat.udps_noport -
270: udpstat.udps_noportbcast -
271: udpstat.udps_fullsock;
272: if (delivered || sflag <= 1)
273: printf("\t%u delivered\n", delivered);
274: p(udps_opackets, "\t%u datagram%s output\n");
275: #undef p
276: }
277:
278: /*
279: * Dump IP statistics structure.
280: */
281: void
282: ip_stats(off, name)
283: u_long off;
284: char *name;
285: {
286: struct ipstat ipstat;
287:
288: if (off == 0)
289: return;
290: kread(off, (char *)&ipstat, sizeof (ipstat));
291: printf("%s:\n", name);
292:
293: #define p(f, m) if (ipstat.f || sflag <= 1) \
294: printf(m, ipstat.f, plural(ipstat.f))
295:
296: p(ips_total, "\t%u total packet%s received\n");
297: p(ips_badsum, "\t%u bad header checksum%s\n");
298: p(ips_toosmall, "\t%u with size smaller than minimum\n");
299: p(ips_tooshort, "\t%u with data size < data length\n");
300: p(ips_badhlen, "\t%u with header length < data size\n");
301: p(ips_badlen, "\t%u with data length < header length\n");
302: p(ips_badoptions, "\t%u with bad options\n");
303: p(ips_badvers, "\t%u with incorrect version number\n");
304: p(ips_fragments, "\t%u fragment%s received\n");
305: p(ips_fragdropped, "\t%u fragment%s dropped (dup or out of space)\n");
306: p(ips_badfrags, "\t%u malformed fragment%s dropped\n");
307: p(ips_fragtimeout, "\t%u fragment%s dropped after timeout\n");
308: p(ips_reassembled, "\t%u packet%s reassembled ok\n");
309: p(ips_delivered, "\t%u packet%s for this host\n");
310: p(ips_noproto, "\t%u packet%s for unknown/unsupported protocol\n");
311: p(ips_forward, "\t%u packet%s forwarded\n");
312: p(ips_cantforward, "\t%u packet%s not forwardable\n");
313: p(ips_redirectsent, "\t%u redirect%s sent\n");
314: p(ips_localout, "\t%u packet%s sent from this host\n");
315: p(ips_rawout, "\t%u packet%s sent with fabricated ip header\n");
316: p(ips_odropped, "\t%u output packet%s dropped due to no bufs, etc.\n");
317: p(ips_noroute, "\t%u output packet%s discarded due to no route\n");
318: p(ips_fragmented, "\t%u output datagram%s fragmented\n");
319: p(ips_ofragments, "\t%u fragment%s created\n");
320: p(ips_cantfrag, "\t%u datagram%s that can't be fragmented\n");
321: #undef p
322: }
323:
324: static char *icmpnames[] = {
325: "echo reply",
326: "#1",
327: "#2",
328: "destination unreachable",
329: "source quench",
330: "routing redirect",
331: "#6",
332: "#7",
333: "echo",
334: "#9",
335: "#10",
336: "time exceeded",
337: "parameter problem",
338: "time stamp",
339: "time stamp reply",
340: "information request",
341: "information request reply",
342: "address mask request",
343: "address mask reply",
344: };
345:
346: /*
347: * Dump ICMP statistics.
348: */
349: void
350: icmp_stats(off, name)
351: u_long off;
352: char *name;
353: {
354: struct icmpstat icmpstat;
355: register int i, first;
356:
357: if (off == 0)
358: return;
359: kread(off, (char *)&icmpstat, sizeof (icmpstat));
360: printf("%s:\n", name);
361:
362: #define p(f, m) if (icmpstat.f || sflag <= 1) \
363: printf(m, icmpstat.f, plural(icmpstat.f))
364:
365: p(icps_error, "\t%u call%s to icmp_error\n");
366: p(icps_oldicmp,
367: "\t%u error%s not generated 'cuz old message was icmp\n");
368: for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++)
369: if (icmpstat.icps_outhist[i] != 0) {
370: if (first) {
371: printf("\tOutput histogram:\n");
372: first = 0;
373: }
374: printf("\t\t%s: %u\n", icmpnames[i],
375: icmpstat.icps_outhist[i]);
376: }
377: p(icps_badcode, "\t%u message%s with bad code fields\n");
378: p(icps_tooshort, "\t%u message%s < minimum length\n");
379: p(icps_checksum, "\t%u bad checksum%s\n");
380: p(icps_badlen, "\t%u message%s with bad length\n");
381: for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++)
382: if (icmpstat.icps_inhist[i] != 0) {
383: if (first) {
384: printf("\tInput histogram:\n");
385: first = 0;
386: }
387: printf("\t\t%s: %u\n", icmpnames[i],
388: icmpstat.icps_inhist[i]);
389: }
390: p(icps_reflect, "\t%u message response%s generated\n");
391: #undef p
392: }
393:
394: /*
395: * Dump IGMP statistics structure.
396: */
397: void
398: igmp_stats(off, name)
399: u_long off;
400: char *name;
401: {
402: struct igmpstat igmpstat;
403:
404: if (off == 0)
405: return;
406: kread(off, (char *)&igmpstat, sizeof (igmpstat));
407: printf("%s:\n", name);
408:
409: #define p(f, m) if (igmpstat.f || sflag <= 1) \
410: printf(m, igmpstat.f, plural(igmpstat.f))
411: #define py(f, m) if (igmpstat.f || sflag <= 1) \
412: printf(m, igmpstat.f, igmpstat.f != 1 ? "ies" : "y")
413: p(igps_rcv_total, "\t%u message%s received\n");
414: p(igps_rcv_tooshort, "\t%u message%s received with too few bytes\n");
415: p(igps_rcv_badsum, "\t%u message%s received with bad checksum\n");
416: py(igps_rcv_queries, "\t%u membership quer%s received\n");
417: py(igps_rcv_badqueries, "\t%u membership quer%s received with invalid field(s)\n");
418: p(igps_rcv_reports, "\t%u membership report%s received\n");
419: p(igps_rcv_badreports, "\t%u membership report%s received with invalid field(s)\n");
420: p(igps_rcv_ourreports, "\t%u membership report%s received for groups to which we belong\n");
421: p(igps_snd_reports, "\t%u membership report%s sent\n");
422: #undef p
423: #undef py
424: }
425:
1.5 deraadt 426: struct rpcnams {
427: struct rpcnams *next;
428: int port;
429: char *rpcname;
430: };
431:
432: char *
433: getrpcportnam(port)
434: int port;
435: {
436: struct sockaddr_in server_addr;
437: register struct hostent *hp;
438: static struct pmaplist *head;
439: int socket = RPC_ANYSOCK;
440: struct timeval minutetimeout;
441: register CLIENT *client;
442: struct rpcent *rpc;
443: static int first;
444: static struct rpcnams *rpcn;
445: struct rpcnams *n;
446: char num[10];
447:
448: if (first == 0) {
449: first = 1;
1.7 ! deraadt 450: memset((char *)&server_addr, 0, sizeof server_addr);
1.5 deraadt 451: server_addr.sin_family = AF_INET;
452: if ((hp = gethostbyname("localhost")) != NULL)
1.7 ! deraadt 453: memmove((caddr_t)&server_addr.sin_addr, hp->h_addr,
1.5 deraadt 454: hp->h_length);
455: else
456: (void) inet_aton("0.0.0.0", &server_addr.sin_addr);
457:
458: minutetimeout.tv_sec = 60;
459: minutetimeout.tv_usec = 0;
460: server_addr.sin_port = htons(PMAPPORT);
461: if ((client = clnttcp_create(&server_addr, PMAPPROG,
1.7 ! deraadt 462: PMAPVERS, &socket, 50, 500)) == NULL)
! 463: return (NULL);
1.5 deraadt 464: if (clnt_call(client, PMAPPROC_DUMP, xdr_void, NULL,
1.7 ! deraadt 465: xdr_pmaplist, &head, minutetimeout) != RPC_SUCCESS)
! 466: clnt_destroy(client);
! 467: return (NULL);
1.5 deraadt 468: }
469: for (; head != NULL; head = head->pml_next) {
470: n = (struct rpcnams *)malloc(sizeof(struct rpcnams));
471: if (n == NULL)
472: continue;
473: n->next = rpcn;
474: rpcn = n;
475: n->port = head->pml_map.pm_port;
476:
477: rpc = getrpcbynumber(head->pml_map.pm_prog);
478: if (rpc)
479: n->rpcname = strdup(rpc->r_name);
480: else {
481: sprintf(num, "%d", head->pml_map.pm_prog);
482: n->rpcname = strdup(num);
483: }
484: }
485: clnt_destroy(client);
486: }
487:
488: for (n = rpcn; n; n = n->next)
489: if (n->port == port)
490: return (n->rpcname);
491: return (NULL);
492: }
493:
1.1 deraadt 494: /*
495: * Pretty print an Internet address (net address + port).
496: * If the nflag was specified, use numbers instead of names.
497: */
498: void
1.5 deraadt 499: inetprint(in, port, proto, local)
1.1 deraadt 500: register struct in_addr *in;
501: int port;
502: char *proto;
1.5 deraadt 503: int local;
1.1 deraadt 504: {
505: struct servent *sp = 0;
1.5 deraadt 506: char line[80], *cp, *nam;
1.1 deraadt 507: int width;
508:
509: sprintf(line, "%.*s.", (Aflag && !nflag) ? 12 : 16, inetname(in));
1.4 millert 510: cp = strchr(line, '\0');
1.1 deraadt 511: if (!nflag && port)
512: sp = getservbyport((int)port, proto);
513: if (sp || port == 0)
514: sprintf(cp, "%.8s", sp ? sp->s_name : "*");
1.5 deraadt 515: else if (local && (nam = getrpcportnam(ntohs((u_short)port))))
1.6 deraadt 516: sprintf(cp, "%d[%.8s]", ntohs((u_short)port), nam);
1.1 deraadt 517: else
518: sprintf(cp, "%d", ntohs((u_short)port));
519: width = Aflag ? 18 : 22;
520: printf(" %-*.*s", width, width, line);
521: }
522:
523: /*
524: * Construct an Internet address representation.
525: * If the nflag has been supplied, give
526: * numeric value, otherwise try for symbolic name.
527: */
528: char *
529: inetname(inp)
530: struct in_addr *inp;
531: {
532: register char *cp;
533: static char line[50];
534: struct hostent *hp;
535: struct netent *np;
536: static char domain[MAXHOSTNAMELEN + 1];
537: static int first = 1;
538:
539: if (first && !nflag) {
540: first = 0;
541: if (gethostname(domain, MAXHOSTNAMELEN) == 0 &&
1.4 millert 542: (cp = strchr(domain, '.')))
1.1 deraadt 543: (void) strcpy(domain, cp + 1);
544: else
545: domain[0] = 0;
546: }
547: cp = 0;
548: if (!nflag && inp->s_addr != INADDR_ANY) {
549: int net = inet_netof(*inp);
550: int lna = inet_lnaof(*inp);
551:
552: if (lna == INADDR_ANY) {
553: np = getnetbyaddr(net, AF_INET);
554: if (np)
555: cp = np->n_name;
556: }
557: if (cp == 0) {
558: hp = gethostbyaddr((char *)inp, sizeof (*inp), AF_INET);
559: if (hp) {
1.4 millert 560: if ((cp = strchr(hp->h_name, '.')) &&
1.1 deraadt 561: !strcmp(cp + 1, domain))
562: *cp = 0;
563: cp = hp->h_name;
564: }
565: }
566: }
567: if (inp->s_addr == INADDR_ANY)
568: strcpy(line, "*");
569: else if (cp)
570: strcpy(line, cp);
571: else {
572: inp->s_addr = ntohl(inp->s_addr);
573: #define C(x) ((x) & 0xff)
574: sprintf(line, "%u.%u.%u.%u", C(inp->s_addr >> 24),
575: C(inp->s_addr >> 16), C(inp->s_addr >> 8), C(inp->s_addr));
576: }
577: return (line);
578: }
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