Annotation of src/usr.bin/netstat/main.c, Revision 1.55
1.55 ! deraadt 1: /* $OpenBSD: main.c,v 1.54 2005/03/30 08:23:47 jaredy Exp $ */
1.2 deraadt 2: /* $NetBSD: main.c,v 1.9 1996/05/07 02:55:02 thorpej Exp $ */
1.1 deraadt 3:
4: /*
5: * Copyright (c) 1983, 1988, 1993
6: * 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.
1.36 millert 16: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
32:
33: #ifndef lint
34: char copyright[] =
35: "@(#) Copyright (c) 1983, 1988, 1993\n\
36: Regents of the University of California. All rights reserved.\n";
37: #endif /* not lint */
38:
39: #ifndef lint
40: #if 0
41: static char sccsid[] = "from: @(#)main.c 8.4 (Berkeley) 3/1/94";
42: #else
1.55 ! deraadt 43: static char *rcsid = "$OpenBSD: main.c,v 1.54 2005/03/30 08:23:47 jaredy Exp $";
1.1 deraadt 44: #endif
45: #endif /* not lint */
46:
47: #include <sys/param.h>
48: #include <sys/file.h>
49: #include <sys/protosw.h>
50: #include <sys/socket.h>
51:
52: #include <netinet/in.h>
53:
54: #include <ctype.h>
55: #include <errno.h>
56: #include <kvm.h>
57: #include <limits.h>
58: #include <netdb.h>
59: #include <nlist.h>
60: #include <paths.h>
61: #include <stdio.h>
62: #include <stdlib.h>
63: #include <string.h>
64: #include <unistd.h>
65: #include "netstat.h"
66:
67: struct nlist nl[] = {
1.55 ! deraadt 68: #define N_MBSTAT 0
1.1 deraadt 69: { "_mbstat" },
1.55 ! deraadt 70: #define N_IPSTAT 1
1.1 deraadt 71: { "_ipstat" },
1.55 ! deraadt 72: #define N_TCBTABLE 2
1.1 deraadt 73: { "_tcbtable" },
1.55 ! deraadt 74: #define N_TCPSTAT 3
1.1 deraadt 75: { "_tcpstat" },
1.55 ! deraadt 76: #define N_UDBTABLE 4
1.1 deraadt 77: { "_udbtable" },
1.55 ! deraadt 78: #define N_UDPSTAT 5
1.1 deraadt 79: { "_udpstat" },
1.55 ! deraadt 80: #define N_IFNET 6
1.1 deraadt 81: { "_ifnet" },
1.55 ! deraadt 82: #define N_ICMPSTAT 7
1.1 deraadt 83: { "_icmpstat" },
1.55 ! deraadt 84: #define N_RTSTAT 8
1.1 deraadt 85: { "_rtstat" },
1.55 ! deraadt 86: #define N_UNIXSW 9
1.1 deraadt 87: { "_unixsw" },
1.55 ! deraadt 88: #define N_IDP 10
1.1 deraadt 89: { "_nspcb"},
1.55 ! deraadt 90: #define N_IDPSTAT 11
1.1 deraadt 91: { "_idpstat"},
1.55 ! deraadt 92: #define N_SPPSTAT 12
1.1 deraadt 93: { "_spp_istat"},
1.55 ! deraadt 94: #define N_NSERR 13
1.1 deraadt 95: { "_ns_errstat"},
1.55 ! deraadt 96: #define N_RTREE 14
1.1 deraadt 97: { "_rt_tables"},
1.55 ! deraadt 98: #define N_FILE 15
1.1 deraadt 99: { "_file" },
1.55 ! deraadt 100: #define N_IGMPSTAT 16
1.1 deraadt 101: { "_igmpstat" },
1.55 ! deraadt 102: #define N_MRTPROTO 17
1.1 deraadt 103: { "_ip_mrtproto" },
1.55 ! deraadt 104: #define N_MRTSTAT 18
1.1 deraadt 105: { "_mrtstat" },
1.55 ! deraadt 106: #define N_MFCHASHTBL 19
1.1 deraadt 107: { "_mfchashtbl" },
1.55 ! deraadt 108: #define N_MFCHASH 20
1.1 deraadt 109: { "_mfchash" },
1.55 ! deraadt 110: #define N_VIFTABLE 21
1.1 deraadt 111: { "_viftable" },
1.55 ! deraadt 112: #define N_IPX 22
1.4 mickey 113: { "_ipxcbtable"},
1.55 ! deraadt 114: #define N_IPXSTAT 23
1.4 mickey 115: { "_ipxstat"},
1.55 ! deraadt 116: #define N_SPXSTAT 24
1.4 mickey 117: { "_spx_istat"},
1.55 ! deraadt 118: #define N_AHSTAT 25
1.8 angelos 119: { "_ahstat"},
1.55 ! deraadt 120: #define N_ESPSTAT 26
1.8 angelos 121: { "_espstat"},
1.55 ! deraadt 122: #define N_IP4STAT 27
1.21 angelos 123: { "_ipipstat"},
1.55 ! deraadt 124: #define N_DDPSTAT 28
1.12 denny 125: { "_ddpstat"},
1.55 ! deraadt 126: #define N_DDPCB 29
1.12 denny 127: { "_ddpcb"},
1.55 ! deraadt 128: #define N_ETHERIPSTAT 30
1.18 angelos 129: { "_etheripstat"},
1.55 ! deraadt 130: #define N_IP6STAT 31
1.19 itojun 131: { "_ip6stat" },
1.55 ! deraadt 132: #define N_ICMP6STAT 32
1.19 itojun 133: { "_icmp6stat" },
1.55 ! deraadt 134: #define N_PIM6STAT 33
1.19 itojun 135: { "_pim6stat" },
1.55 ! deraadt 136: #define N_MRT6PROTO 34
1.19 itojun 137: { "_ip6_mrtproto" },
1.55 ! deraadt 138: #define N_MRT6STAT 35
1.19 itojun 139: { "_mrt6stat" },
1.55 ! deraadt 140: #define N_MF6CTABLE 36
1.19 itojun 141: { "_mf6ctable" },
1.55 ! deraadt 142: #define N_MIF6TABLE 37
1.19 itojun 143: { "_mif6table" },
1.55 ! deraadt 144: #define N_MBPOOL 38
1.25 provos 145: { "_mbpool" },
1.55 ! deraadt 146: #define N_MCLPOOL 39
1.25 provos 147: { "_mclpool" },
1.55 ! deraadt 148: #define N_IPCOMPSTAT 40
1.26 jjbg 149: { "_ipcompstat" },
1.55 ! deraadt 150: #define N_RIP6STAT 41
1.32 itojun 151: { "_rip6stat" },
1.55 ! deraadt 152: #define N_CARPSTAT 42
1.39 mcbride 153: { "_carpstats" },
1.55 ! deraadt 154: #define N_RAWIPTABLE 43
1.40 markus 155: { "_rawcbtable" },
1.55 ! deraadt 156: #define N_RAWIP6TABLE 44
1.40 markus 157: { "_rawin6pcbtable" },
1.55 ! deraadt 158: #define N_PFSYNCSTAT 45
1.43 mcbride 159: { "_pfsyncstats" },
1.55 ! deraadt 160: #define N_PIMSTAT 46
1.50 mcbride 161: { "_pimstat" },
1.55 ! deraadt 162: { ""}
1.1 deraadt 163: };
164:
165: struct protox {
1.38 deraadt 166: u_char pr_index; /* index into nlist of cb head */
167: u_char pr_sindex; /* index into nlist of stat block */
168: u_char pr_wanted; /* 1 if wanted, 0 otherwise */
169: void (*pr_cblocks)(u_long, char *); /* control blocks printing routine */
170: void (*pr_stats)(u_long, char *); /* statistics printing routine */
171: char *pr_name; /* well-known name */
1.1 deraadt 172: } protox[] = {
173: { N_TCBTABLE, N_TCPSTAT, 1, protopr,
174: tcp_stats, "tcp" },
175: { N_UDBTABLE, N_UDPSTAT, 1, protopr,
176: udp_stats, "udp" },
1.40 markus 177: { N_RAWIPTABLE, N_IPSTAT, 1, protopr,
1.1 deraadt 178: ip_stats, "ip" },
179: { -1, N_ICMPSTAT, 1, 0,
180: icmp_stats, "icmp" },
181: { -1, N_IGMPSTAT, 1, 0,
182: igmp_stats, "igmp" },
1.8 angelos 183: { -1, N_AHSTAT, 1, 0,
1.15 angelos 184: ah_stats, "ah" },
1.8 angelos 185: { -1, N_ESPSTAT, 1, 0,
1.15 angelos 186: esp_stats, "esp" },
1.8 angelos 187: { -1, N_IP4STAT, 1, 0,
1.21 angelos 188: ipip_stats, "ipencap" },
1.18 angelos 189: { -1, N_ETHERIPSTAT, 1, 0,
190: etherip_stats,"etherip" },
1.29 mickey 191: { -1, N_IPCOMPSTAT, 1, 0,
192: ipcomp_stats, "ipcomp" },
1.44 deraadt 193: { -1, N_CARPSTAT, 1, 0,
194: carp_stats, "carp" },
195: { -1, N_PFSYNCSTAT, 1, 0,
196: pfsync_stats, "pfsync" },
1.50 mcbride 197: { -1, N_PIMSTAT, 1, 0,
198: pim_stats, "pim" },
1.1 deraadt 199: { -1, -1, 0, 0,
200: 0, 0 }
201: };
202:
1.19 itojun 203: #ifdef INET6
204: struct protox ip6protox[] = {
1.22 itojun 205: { N_TCBTABLE, N_TCPSTAT, 1, ip6protopr,
1.23 itojun 206: 0, "tcp" },
1.22 itojun 207: { N_UDBTABLE, N_UDPSTAT, 1, ip6protopr,
1.23 itojun 208: 0, "udp" },
1.40 markus 209: { N_RAWIP6TABLE,N_IP6STAT, 1, ip6protopr,
1.19 itojun 210: ip6_stats, "ip6" },
211: { -1, N_ICMP6STAT, 1, 0,
212: icmp6_stats, "icmp6" },
213: { -1, N_PIM6STAT, 1, 0,
214: pim6_stats, "pim6" },
1.32 itojun 215: { -1, N_RIP6STAT, 1, 0,
216: rip6_stats, "rip6" },
1.19 itojun 217: { -1, -1, 0, 0,
218: 0, 0 }
219: };
220: #endif
221:
1.4 mickey 222: struct protox ipxprotox[] = {
223: { N_IPX, N_IPXSTAT, 1, ipxprotopr,
224: ipx_stats, "ipx" },
225: { N_IPX, N_SPXSTAT, 1, ipxprotopr,
226: spx_stats, "spx" },
227: { -1, -1, 0, 0,
228: 0, 0 }
229: };
230:
1.1 deraadt 231: struct protox nsprotox[] = {
232: { N_IDP, N_IDPSTAT, 1, nsprotopr,
233: idp_stats, "idp" },
234: { N_IDP, N_SPPSTAT, 1, nsprotopr,
235: spp_stats, "spp" },
236: { -1, N_NSERR, 1, 0,
237: nserr_stats, "ns_err" },
238: { -1, -1, 0, 0,
239: 0, 0 }
240: };
241:
1.12 denny 242: struct protox atalkprotox[] = {
243: { N_DDPCB, N_DDPSTAT, 1, atalkprotopr,
244: ddp_stats, "ddp" },
245: { -1, -1, 0, 0,
246: 0, 0 }
247: };
248:
1.19 itojun 249: #ifndef INET6
1.34 deraadt 250: struct protox *protoprotox[] = {
1.48 henning 251: protox, ipxprotox, nsprotox, atalkprotox, NULL
1.34 deraadt 252: };
1.19 itojun 253: #else
1.34 deraadt 254: struct protox *protoprotox[] = {
1.48 henning 255: protox, ip6protox, ipxprotox, nsprotox, atalkprotox, NULL
1.34 deraadt 256: };
1.19 itojun 257: #endif
1.1 deraadt 258:
1.30 millert 259: static void printproto(struct protox *, char *);
260: static void usage(void);
261: static struct protox *name2protox(char *);
262: static struct protox *knownname(char *);
1.1 deraadt 263:
264: kvm_t *kvmd;
265:
266: int
1.34 deraadt 267: main(int argc, char *argv[])
1.1 deraadt 268: {
269: extern char *optarg;
270: extern int optind;
1.28 mpech 271: struct protoent *p;
272: struct protox *tp = NULL; /* for printing cblocks & stats */
1.1 deraadt 273: int ch;
274: char *nlistf = NULL, *memf = NULL;
275: char buf[_POSIX2_LINE_MAX];
276:
277: af = AF_UNSPEC;
278:
1.54 jaredy 279: while ((ch = getopt(argc, argv, "Aabdf:gI:ilM:mN:np:qrstuvw:")) != -1)
1.31 deraadt 280: switch (ch) {
1.1 deraadt 281: case 'A':
282: Aflag = 1;
283: break;
284: case 'a':
285: aflag = 1;
1.24 camield 286: break;
287: case 'b':
288: bflag = 1;
1.1 deraadt 289: break;
290: case 'd':
291: dflag = 1;
292: break;
293: case 'f':
1.4 mickey 294: if (strcmp(optarg, "inet") == 0)
1.1 deraadt 295: af = AF_INET;
1.19 itojun 296: else if (strcmp(optarg, "inet6") == 0)
297: af = AF_INET6;
1.7 kstailey 298: else if (strcmp(optarg, "local") == 0)
299: af = AF_LOCAL;
1.1 deraadt 300: else if (strcmp(optarg, "unix") == 0)
301: af = AF_UNIX;
1.4 mickey 302: else if (strcmp(optarg, "ipx") == 0)
303: af = AF_IPX;
304: else if (strcmp(optarg, "ns") == 0)
305: af = AF_NS;
1.10 angelos 306: else if (strcmp(optarg, "encap") == 0)
1.16 angelos 307: af = PF_KEY;
1.12 denny 308: else if (strcmp(optarg, "atalk") == 0)
309: af = AF_APPLETALK;
1.1 deraadt 310: else {
311: (void)fprintf(stderr,
312: "%s: %s: unknown address family\n",
1.2 deraadt 313: __progname, optarg);
1.1 deraadt 314: exit(1);
315: }
316: break;
317: case 'g':
318: gflag = 1;
319: break;
1.2 deraadt 320: case 'I':
1.1 deraadt 321: iflag = 1;
1.2 deraadt 322: interface = optarg;
1.1 deraadt 323: break;
324: case 'i':
325: iflag = 1;
326: break;
1.19 itojun 327: case 'l':
328: lflag = 1;
329: break;
1.1 deraadt 330: case 'M':
331: memf = optarg;
332: break;
333: case 'm':
334: mflag = 1;
335: break;
336: case 'N':
337: nlistf = optarg;
338: break;
339: case 'n':
340: nflag = 1;
341: break;
342: case 'p':
343: if ((tp = name2protox(optarg)) == NULL) {
344: (void)fprintf(stderr,
1.42 jmc 345: "%s: %s: unknown protocol\n",
1.2 deraadt 346: __progname, optarg);
1.1 deraadt 347: exit(1);
348: }
349: pflag = 1;
1.27 brian 350: break;
351: case 'q':
352: qflag = 1;
1.1 deraadt 353: break;
354: case 'r':
355: rflag = 1;
1.46 cedric 356: break;
1.1 deraadt 357: case 's':
358: ++sflag;
359: break;
360: case 't':
361: tflag = 1;
362: break;
363: case 'u':
364: af = AF_UNIX;
1.13 peter 365: break;
366: case 'v':
367: vflag = 1;
1.1 deraadt 368: break;
369: case 'w':
370: interval = atoi(optarg);
371: iflag = 1;
372: break;
373: case '?':
374: default:
375: usage();
376: }
377: argv += optind;
378: argc -= optind;
379:
1.33 deraadt 380: /*
381: * Discard setgid privileges if not the running kernel so that bad
382: * guys can't print interesting stuff from kernel memory.
383: */
384: if (nlistf != NULL || memf != NULL) {
385: setegid(getgid());
386: setgid(getgid());
387: }
388:
389: if ((kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY,
390: buf)) == NULL) {
391: fprintf(stderr, "%s: kvm_open: %s\n", __progname, buf);
392: exit(1);
393: }
394: setegid(getgid());
395: setgid(getgid());
396:
1.1 deraadt 397: #define BACKWARD_COMPATIBILITY
398: #ifdef BACKWARD_COMPATIBILITY
399: if (*argv) {
400: if (isdigit(**argv)) {
401: interval = atoi(*argv);
402: if (interval <= 0)
403: usage();
404: ++argv;
405: iflag = 1;
406: }
407: if (*argv) {
408: nlistf = *argv;
409: if (*++argv)
410: memf = *argv;
411: }
412: }
413: #endif
1.14 deraadt 414:
1.1 deraadt 415: if (kvm_nlist(kvmd, nl) < 0 || nl[0].n_type == 0) {
416: if (nlistf)
1.2 deraadt 417: fprintf(stderr, "%s: %s: no namelist\n", __progname,
418: nlistf);
1.1 deraadt 419: else
1.2 deraadt 420: fprintf(stderr, "%s: no namelist\n", __progname);
1.1 deraadt 421: exit(1);
422: }
423: if (mflag) {
1.25 provos 424: mbpr(nl[N_MBSTAT].n_value, nl[N_MBPOOL].n_value,
425: nl[N_MCLPOOL].n_value);
1.1 deraadt 426: exit(0);
427: }
428: if (pflag) {
1.45 markus 429: printproto(tp, tp->pr_name);
1.1 deraadt 430: exit(0);
431: }
432: /*
433: * Keep file descriptors open to avoid overhead
434: * of open/close on each call to get* routines.
435: */
436: sethostent(1);
437: setnetent(1);
438: if (iflag) {
439: intpr(interval, nl[N_IFNET].n_value);
440: exit(0);
441: }
442: if (rflag) {
443: if (sflag)
444: rt_stats(nl[N_RTSTAT].n_value);
445: else
446: routepr(nl[N_RTREE].n_value);
447: exit(0);
448: }
449: if (gflag) {
1.19 itojun 450: if (sflag) {
451: if (af == AF_INET || af == AF_UNSPEC)
452: mrt_stats(nl[N_MRTPROTO].n_value,
453: nl[N_MRTSTAT].n_value);
454: #ifdef INET6
455: if (af == AF_INET6 || af == AF_UNSPEC)
456: mrt6_stats(nl[N_MRT6PROTO].n_value,
457: nl[N_MRT6STAT].n_value);
458: #endif
459: }
460: else {
461: if (af == AF_INET || af == AF_UNSPEC)
462: mroutepr(nl[N_MRTPROTO].n_value,
463: nl[N_MFCHASHTBL].n_value,
464: nl[N_MFCHASH].n_value,
465: nl[N_VIFTABLE].n_value);
466: #ifdef INET6
467: if (af == AF_INET6 || af == AF_UNSPEC)
468: mroute6pr(nl[N_MRT6PROTO].n_value,
469: nl[N_MF6CTABLE].n_value,
470: nl[N_MIF6TABLE].n_value);
471: #endif
472: }
1.1 deraadt 473: exit(0);
474: }
475: if (af == AF_INET || af == AF_UNSPEC) {
476: setprotoent(1);
477: setservent(1);
478: /* ugh, this is O(MN) ... why do we do this? */
1.11 millert 479: while ((p = getprotoent())) {
1.1 deraadt 480: for (tp = protox; tp->pr_name; tp++)
481: if (strcmp(tp->pr_name, p->p_name) == 0)
482: break;
483: if (tp->pr_name == 0 || tp->pr_wanted == 0)
484: continue;
485: printproto(tp, p->p_name);
486: }
487: endprotoent();
488: }
1.19 itojun 489: #ifdef INET6
490: if (af == AF_INET6 || af == AF_UNSPEC)
491: for (tp = ip6protox; tp->pr_name; tp++)
492: printproto(tp, tp->pr_name);
493: #endif
1.4 mickey 494: if (af == AF_IPX || af == AF_UNSPEC)
495: for (tp = ipxprotox; tp->pr_name; tp++)
496: printproto(tp, tp->pr_name);
1.1 deraadt 497: if (af == AF_NS || af == AF_UNSPEC)
498: for (tp = nsprotox; tp->pr_name; tp++)
499: printproto(tp, tp->pr_name);
500: if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag)
501: unixpr(nl[N_UNIXSW].n_value);
1.12 denny 502: if (af == AF_APPLETALK || af == AF_UNSPEC)
503: for (tp = atalkprotox; tp->pr_name; tp++)
504: printproto(tp, tp->pr_name);
1.1 deraadt 505: exit(0);
506: }
507:
508: /*
509: * Print out protocol statistics or control blocks (per sflag).
510: * If the interface was not specifically requested, and the symbol
511: * is not in the namelist, ignore this one.
512: */
513: static void
1.34 deraadt 514: printproto(struct protox *tp, char *name)
1.1 deraadt 515: {
1.38 deraadt 516: void (*pr)(u_long, char *);
1.35 dhartmei 517: u_char i;
1.1 deraadt 518:
519: if (sflag) {
520: pr = tp->pr_stats;
1.35 dhartmei 521: i = tp->pr_sindex;
1.1 deraadt 522: } else {
523: pr = tp->pr_cblocks;
1.35 dhartmei 524: i = tp->pr_index;
1.1 deraadt 525: }
1.35 dhartmei 526: if (pr != NULL && i < sizeof(nl) / sizeof(nl[0]) &&
527: (nl[i].n_value || af != AF_UNSPEC))
528: (*pr)(nl[i].n_value, name);
1.1 deraadt 529: }
530:
531: /*
532: * Read kernel memory, return 0 on success.
533: */
534: int
1.53 jaredy 535: kread(u_long addr, void *buf, int size)
1.1 deraadt 536: {
537:
538: if (kvm_read(kvmd, addr, buf, size) != size) {
1.2 deraadt 539: (void)fprintf(stderr, "%s: %s\n", __progname,
1.1 deraadt 540: kvm_geterr(kvmd));
541: return (-1);
542: }
543: return (0);
544: }
545:
546: char *
1.34 deraadt 547: plural(int n)
1.1 deraadt 548: {
549: return (n != 1 ? "s" : "");
550: }
551:
552: char *
1.34 deraadt 553: plurales(int n)
1.1 deraadt 554: {
555: return (n != 1 ? "es" : "");
556: }
557:
558: /*
559: * Find the protox for the given "well-known" name.
560: */
561: static struct protox *
1.34 deraadt 562: knownname(char *name)
1.1 deraadt 563: {
564: struct protox **tpp, *tp;
565:
566: for (tpp = protoprotox; *tpp; tpp++)
567: for (tp = *tpp; tp->pr_name; tp++)
568: if (strcmp(tp->pr_name, name) == 0)
569: return (tp);
570: return (NULL);
571: }
572:
573: /*
574: * Find the protox corresponding to name.
575: */
576: static struct protox *
1.34 deraadt 577: name2protox(char *name)
1.1 deraadt 578: {
579: struct protox *tp;
580: char **alias; /* alias from p->aliases */
581: struct protoent *p;
582:
583: /*
584: * Try to find the name in the list of "well-known" names. If that
585: * fails, check if name is an alias for an Internet protocol.
586: */
1.11 millert 587: if ((tp = knownname(name)))
1.1 deraadt 588: return (tp);
589:
590: setprotoent(1); /* make protocol lookup cheaper */
1.11 millert 591: while ((p = getprotoent())) {
1.1 deraadt 592: /* assert: name not same as p->name */
593: for (alias = p->p_aliases; *alias; alias++)
594: if (strcmp(name, *alias) == 0) {
595: endprotoent();
596: return (knownname(p->p_name));
597: }
598: }
599: endprotoent();
600: return (NULL);
601: }
602:
603: static void
1.34 deraadt 604: usage(void)
1.1 deraadt 605: {
606: (void)fprintf(stderr,
1.2 deraadt 607: "usage: %s [-Aan] [-f address_family] [-M core] [-N system]\n", __progname);
1.1 deraadt 608: (void)fprintf(stderr,
1.54 jaredy 609: " %s [-bdgilmnqrstu] [-f address_family] [-M core] [-N system]\n", __progname);
1.1 deraadt 610: (void)fprintf(stderr,
1.37 jmc 611: " %s [-bdn] [-I interface] [-M core] [-N system] [-w wait]\n", __progname);
1.1 deraadt 612: (void)fprintf(stderr,
1.47 jmc 613: " %s [-s] [-M core] [-N system] [-p protocol]\n", __progname);
1.37 jmc 614: (void)fprintf(stderr,
1.41 jmc 615: " %s [-a] [-f address_family] [-i | -I interface]\n", __progname);
1.1 deraadt 616: exit(1);
617: }
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