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1.26 ! jjbg 1: /* $OpenBSD: main.c,v 1.25 2001/05/18 02:41:38 provos 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.
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: char copyright[] =
39: "@(#) Copyright (c) 1983, 1988, 1993\n\
40: Regents of the University of California. All rights reserved.\n";
41: #endif /* not lint */
42:
43: #ifndef lint
44: #if 0
45: static char sccsid[] = "from: @(#)main.c 8.4 (Berkeley) 3/1/94";
46: #else
1.26 ! jjbg 47: static char *rcsid = "$OpenBSD: main.c,v 1.25 2001/05/18 02:41:38 provos Exp $";
1.1 deraadt 48: #endif
49: #endif /* not lint */
50:
51: #include <sys/param.h>
52: #include <sys/file.h>
53: #include <sys/protosw.h>
54: #include <sys/socket.h>
55:
56: #include <netinet/in.h>
57:
58: #include <ctype.h>
59: #include <errno.h>
60: #include <kvm.h>
61: #include <limits.h>
62: #include <netdb.h>
63: #include <nlist.h>
64: #include <paths.h>
65: #include <stdio.h>
66: #include <stdlib.h>
67: #include <string.h>
68: #include <unistd.h>
69: #include "netstat.h"
70:
71: struct nlist nl[] = {
72: #define N_MBSTAT 0
73: { "_mbstat" },
74: #define N_IPSTAT 1
75: { "_ipstat" },
76: #define N_TCBTABLE 2
77: { "_tcbtable" },
78: #define N_TCPSTAT 3
79: { "_tcpstat" },
80: #define N_UDBTABLE 4
81: { "_udbtable" },
82: #define N_UDPSTAT 5
83: { "_udpstat" },
84: #define N_IFNET 6
85: { "_ifnet" },
86: #define N_IMP 7
87: { "_imp_softc" },
88: #define N_ICMPSTAT 8
89: { "_icmpstat" },
90: #define N_RTSTAT 9
91: { "_rtstat" },
92: #define N_UNIXSW 10
93: { "_unixsw" },
94: #define N_IDP 11
95: { "_nspcb"},
96: #define N_IDPSTAT 12
97: { "_idpstat"},
98: #define N_SPPSTAT 13
99: { "_spp_istat"},
100: #define N_NSERR 14
101: { "_ns_errstat"},
102: #define N_CLNPSTAT 15
103: { "_clnp_stat"},
104: #define IN_NOTUSED 16
105: { "_tp_inpcb" },
106: #define ISO_TP 17
107: { "_tp_refinfo" },
108: #define N_TPSTAT 18
109: { "_tp_stat" },
110: #define N_ESISSTAT 19
111: { "_esis_stat"},
112: #define N_NIMP 20
113: { "_nimp"},
114: #define N_RTREE 21
115: { "_rt_tables"},
116: #define N_CLTP 22
117: { "_cltb"},
118: #define N_CLTPSTAT 23
119: { "_cltpstat"},
120: #define N_NFILE 24
121: { "_nfile" },
122: #define N_FILE 25
123: { "_file" },
124: #define N_IGMPSTAT 26
125: { "_igmpstat" },
126: #define N_MRTPROTO 27
127: { "_ip_mrtproto" },
128: #define N_MRTSTAT 28
129: { "_mrtstat" },
130: #define N_MFCHASHTBL 29
131: { "_mfchashtbl" },
132: #define N_MFCHASH 30
133: { "_mfchash" },
134: #define N_VIFTABLE 31
135: { "_viftable" },
1.4 mickey 136: #define N_IPX 32
137: { "_ipxcbtable"},
138: #define N_IPXSTAT 33
139: { "_ipxstat"},
140: #define N_SPXSTAT 34
141: { "_spx_istat"},
142: #define N_IPXERR 35
143: { "_ipx_errstat"},
1.8 angelos 144: #define N_AHSTAT 36
145: { "_ahstat"},
146: #define N_ESPSTAT 37
147: { "_espstat"},
148: #define N_IP4STAT 38
1.21 angelos 149: { "_ipipstat"},
1.12 denny 150: #define N_DDPSTAT 39
151: { "_ddpstat"},
152: #define N_DDPCB 40
153: { "_ddpcb"},
1.18 angelos 154: #define N_ETHERIPSTAT 41
155: { "_etheripstat"},
1.19 itojun 156: #define N_IP6STAT 42
157: { "_ip6stat" },
158: #define N_ICMP6STAT 43
159: { "_icmp6stat" },
160: #define N_IPSECSTAT 44
161: { "_ipsecstat" },
162: #define N_IPSEC6STAT 45
163: { "_ipsec6stat" },
164: #define N_PIM6STAT 46
165: { "_pim6stat" },
166: #define N_MRT6PROTO 47
167: { "_ip6_mrtproto" },
168: #define N_MRT6STAT 48
169: { "_mrt6stat" },
170: #define N_MF6CTABLE 49
171: { "_mf6ctable" },
172: #define N_MIF6TABLE 50
173: { "_mif6table" },
1.25 provos 174: #define N_MBPOOL 51
175: { "_mbpool" },
176: #define N_MCLPOOL 52
177: { "_mclpool" },
1.26 ! jjbg 178: #define N_IPCOMPSTAT 53
! 179: { "_ipcompstat" },
1.11 millert 180: { ""},
1.1 deraadt 181: };
182:
183: struct protox {
184: u_char pr_index; /* index into nlist of cb head */
185: u_char pr_sindex; /* index into nlist of stat block */
186: u_char pr_wanted; /* 1 if wanted, 0 otherwise */
187: void (*pr_cblocks)(); /* control blocks printing routine */
188: void (*pr_stats)(); /* statistics printing routine */
189: char *pr_name; /* well-known name */
190: } protox[] = {
191: { N_TCBTABLE, N_TCPSTAT, 1, protopr,
192: tcp_stats, "tcp" },
193: { N_UDBTABLE, N_UDPSTAT, 1, protopr,
194: udp_stats, "udp" },
195: { -1, N_IPSTAT, 1, 0,
196: ip_stats, "ip" },
197: { -1, N_ICMPSTAT, 1, 0,
198: icmp_stats, "icmp" },
199: { -1, N_IGMPSTAT, 1, 0,
200: igmp_stats, "igmp" },
1.8 angelos 201: { -1, N_AHSTAT, 1, 0,
1.15 angelos 202: ah_stats, "ah" },
1.8 angelos 203: { -1, N_ESPSTAT, 1, 0,
1.15 angelos 204: esp_stats, "esp" },
1.8 angelos 205: { -1, N_IP4STAT, 1, 0,
1.21 angelos 206: ipip_stats, "ipencap" },
1.18 angelos 207: { -1, N_ETHERIPSTAT, 1, 0,
208: etherip_stats,"etherip" },
1.26 ! jjbg 209: { -1, N_IPCOMPSTAT, 1, 0,
! 210: ipcomp_stats, "ipcomp" },
1.1 deraadt 211: { -1, -1, 0, 0,
212: 0, 0 }
213: };
214:
1.19 itojun 215: #ifdef INET6
216: struct protox ip6protox[] = {
1.22 itojun 217: { N_TCBTABLE, N_TCPSTAT, 1, ip6protopr,
1.23 itojun 218: 0, "tcp" },
1.22 itojun 219: { N_UDBTABLE, N_UDPSTAT, 1, ip6protopr,
1.23 itojun 220: 0, "udp" },
1.19 itojun 221: { -1, N_IP6STAT, 1, 0,
222: ip6_stats, "ip6" },
223: { -1, N_ICMP6STAT, 1, 0,
224: icmp6_stats, "icmp6" },
225: { -1, N_PIM6STAT, 1, 0,
226: pim6_stats, "pim6" },
227: { -1, -1, 0, 0,
228: 0, 0 }
229: };
230: #endif
231:
1.4 mickey 232: struct protox ipxprotox[] = {
233: { N_IPX, N_IPXSTAT, 1, ipxprotopr,
234: ipx_stats, "ipx" },
235: { N_IPX, N_SPXSTAT, 1, ipxprotopr,
236: spx_stats, "spx" },
237: { -1, -1, 0, 0,
238: 0, 0 }
239: };
240:
1.1 deraadt 241: struct protox nsprotox[] = {
242: { N_IDP, N_IDPSTAT, 1, nsprotopr,
243: idp_stats, "idp" },
244: { N_IDP, N_SPPSTAT, 1, nsprotopr,
245: spp_stats, "spp" },
246: { -1, N_NSERR, 1, 0,
247: nserr_stats, "ns_err" },
248: { -1, -1, 0, 0,
249: 0, 0 }
250: };
251:
252: struct protox isoprotox[] = {
253: { ISO_TP, N_TPSTAT, 1, iso_protopr,
254: tp_stats, "tp" },
255: { N_CLTP, N_CLTPSTAT, 1, iso_protopr,
256: cltp_stats, "cltp" },
257: { -1, N_CLNPSTAT, 1, 0,
258: clnp_stats, "clnp"},
259: { -1, N_ESISSTAT, 1, 0,
260: esis_stats, "esis"},
261: { -1, -1, 0, 0,
262: 0, 0 }
263: };
264:
1.12 denny 265: struct protox atalkprotox[] = {
266: { N_DDPCB, N_DDPSTAT, 1, atalkprotopr,
267: ddp_stats, "ddp" },
268: { -1, -1, 0, 0,
269: 0, 0 }
270: };
271:
1.19 itojun 272: #ifndef INET6
1.12 denny 273: struct protox *protoprotox[] = { protox, ipxprotox, nsprotox, isoprotox, atalkprotox, NULL };
1.19 itojun 274: #else
275: struct protox *protoprotox[] = { protox, ip6protox, ipxprotox, nsprotox, isoprotox, atalkprotox, NULL };
276: #endif
1.1 deraadt 277:
278: static void printproto __P((struct protox *, char *));
279: static void usage __P((void));
280: static struct protox *name2protox __P((char *));
281: static struct protox *knownname __P((char *));
282:
283: kvm_t *kvmd;
284:
285: int
286: main(argc, argv)
287: int argc;
288: char *argv[];
289: {
290: extern char *optarg;
291: extern int optind;
292: register struct protoent *p;
1.19 itojun 293: register struct protox *tp = NULL; /* for printing cblocks & stats */
1.1 deraadt 294: int ch;
295: char *nlistf = NULL, *memf = NULL;
296: char buf[_POSIX2_LINE_MAX];
297:
298: af = AF_UNSPEC;
299:
1.24 camield 300: while ((ch = getopt(argc, argv, "Aabdf:gI:ilM:mN:np:rstuvw:")) != -1)
1.1 deraadt 301: switch(ch) {
302: case 'A':
303: Aflag = 1;
304: break;
305: case 'a':
306: aflag = 1;
1.24 camield 307: break;
308: case 'b':
309: bflag = 1;
1.1 deraadt 310: break;
311: case 'd':
312: dflag = 1;
313: break;
314: case 'f':
1.4 mickey 315: if (strcmp(optarg, "inet") == 0)
1.1 deraadt 316: af = AF_INET;
1.19 itojun 317: else if (strcmp(optarg, "inet6") == 0)
318: af = AF_INET6;
1.7 kstailey 319: else if (strcmp(optarg, "local") == 0)
320: af = AF_LOCAL;
1.1 deraadt 321: else if (strcmp(optarg, "unix") == 0)
322: af = AF_UNIX;
1.4 mickey 323: else if (strcmp(optarg, "ipx") == 0)
324: af = AF_IPX;
325: else if (strcmp(optarg, "ns") == 0)
326: af = AF_NS;
1.1 deraadt 327: else if (strcmp(optarg, "iso") == 0)
328: af = AF_ISO;
1.10 angelos 329: else if (strcmp(optarg, "encap") == 0)
1.16 angelos 330: af = PF_KEY;
1.12 denny 331: else if (strcmp(optarg, "atalk") == 0)
332: af = AF_APPLETALK;
1.1 deraadt 333: else {
334: (void)fprintf(stderr,
335: "%s: %s: unknown address family\n",
1.2 deraadt 336: __progname, optarg);
1.1 deraadt 337: exit(1);
338: }
339: break;
340: case 'g':
341: gflag = 1;
342: break;
1.2 deraadt 343: case 'I':
1.1 deraadt 344: iflag = 1;
1.2 deraadt 345: interface = optarg;
1.1 deraadt 346: break;
347: case 'i':
348: iflag = 1;
349: break;
1.19 itojun 350: case 'l':
351: lflag = 1;
352: break;
1.1 deraadt 353: case 'M':
354: memf = optarg;
355: break;
356: case 'm':
357: mflag = 1;
358: break;
359: case 'N':
360: nlistf = optarg;
361: break;
362: case 'n':
363: nflag = 1;
364: break;
365: case 'p':
366: if ((tp = name2protox(optarg)) == NULL) {
367: (void)fprintf(stderr,
368: "%s: %s: unknown or uninstrumented protocol\n",
1.2 deraadt 369: __progname, optarg);
1.1 deraadt 370: exit(1);
371: }
372: pflag = 1;
373: break;
374: case 'r':
375: rflag = 1;
376: break;
377: case 's':
378: ++sflag;
379: break;
380: case 't':
381: tflag = 1;
382: break;
383: case 'u':
384: af = AF_UNIX;
1.13 peter 385: break;
386: case 'v':
387: vflag = 1;
1.1 deraadt 388: break;
389: case 'w':
390: interval = atoi(optarg);
391: iflag = 1;
392: break;
393: case '?':
394: default:
395: usage();
396: }
397: argv += optind;
398: argc -= optind;
399:
400: #define BACKWARD_COMPATIBILITY
401: #ifdef BACKWARD_COMPATIBILITY
402: if (*argv) {
403: if (isdigit(**argv)) {
404: interval = atoi(*argv);
405: if (interval <= 0)
406: usage();
407: ++argv;
408: iflag = 1;
409: }
410: if (*argv) {
411: nlistf = *argv;
412: if (*++argv)
413: memf = *argv;
414: }
415: }
416: #endif
417:
418: /*
419: * Discard setgid privileges if not the running kernel so that bad
420: * guys can't print interesting stuff from kernel memory.
421: */
1.5 tholo 422: if (nlistf != NULL || memf != NULL) {
423: setegid(getgid());
1.1 deraadt 424: setgid(getgid());
1.5 tholo 425: }
1.1 deraadt 426:
1.2 deraadt 427: if ((kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY,
428: buf)) == NULL) {
429: fprintf(stderr, "%s: kvm_open: %s\n", __progname, buf);
1.1 deraadt 430: exit(1);
431: }
1.14 deraadt 432: setegid(getgid());
433: setgid(getgid());
434:
1.1 deraadt 435: if (kvm_nlist(kvmd, nl) < 0 || nl[0].n_type == 0) {
436: if (nlistf)
1.2 deraadt 437: fprintf(stderr, "%s: %s: no namelist\n", __progname,
438: nlistf);
1.1 deraadt 439: else
1.2 deraadt 440: fprintf(stderr, "%s: no namelist\n", __progname);
1.1 deraadt 441: exit(1);
442: }
443: if (mflag) {
1.25 provos 444: mbpr(nl[N_MBSTAT].n_value, nl[N_MBPOOL].n_value,
445: nl[N_MCLPOOL].n_value);
1.1 deraadt 446: exit(0);
447: }
448: if (pflag) {
449: if (tp->pr_stats)
450: (*tp->pr_stats)(nl[tp->pr_sindex].n_value,
451: tp->pr_name);
452: else
453: printf("%s: no stats routine\n", tp->pr_name);
454: exit(0);
455: }
456: /*
457: * Keep file descriptors open to avoid overhead
458: * of open/close on each call to get* routines.
459: */
460: sethostent(1);
461: setnetent(1);
462: if (iflag) {
463: intpr(interval, nl[N_IFNET].n_value);
464: exit(0);
465: }
466: if (rflag) {
467: if (sflag)
468: rt_stats(nl[N_RTSTAT].n_value);
469: else
470: routepr(nl[N_RTREE].n_value);
471: exit(0);
472: }
473: if (gflag) {
1.19 itojun 474: if (sflag) {
475: if (af == AF_INET || af == AF_UNSPEC)
476: mrt_stats(nl[N_MRTPROTO].n_value,
477: nl[N_MRTSTAT].n_value);
478: #ifdef INET6
479: if (af == AF_INET6 || af == AF_UNSPEC)
480: mrt6_stats(nl[N_MRT6PROTO].n_value,
481: nl[N_MRT6STAT].n_value);
482: #endif
483: }
484: else {
485: if (af == AF_INET || af == AF_UNSPEC)
486: mroutepr(nl[N_MRTPROTO].n_value,
487: nl[N_MFCHASHTBL].n_value,
488: nl[N_MFCHASH].n_value,
489: nl[N_VIFTABLE].n_value);
490: #ifdef INET6
491: if (af == AF_INET6 || af == AF_UNSPEC)
492: mroute6pr(nl[N_MRT6PROTO].n_value,
493: nl[N_MF6CTABLE].n_value,
494: nl[N_MIF6TABLE].n_value);
495: #endif
496: }
1.1 deraadt 497: exit(0);
498: }
499: if (af == AF_INET || af == AF_UNSPEC) {
500: setprotoent(1);
501: setservent(1);
502: /* ugh, this is O(MN) ... why do we do this? */
1.11 millert 503: while ((p = getprotoent())) {
1.1 deraadt 504: for (tp = protox; tp->pr_name; tp++)
505: if (strcmp(tp->pr_name, p->p_name) == 0)
506: break;
507: if (tp->pr_name == 0 || tp->pr_wanted == 0)
508: continue;
509: printproto(tp, p->p_name);
510: }
511: endprotoent();
512: }
1.19 itojun 513: #ifdef INET6
514: if (af == AF_INET6 || af == AF_UNSPEC)
515: for (tp = ip6protox; tp->pr_name; tp++)
516: printproto(tp, tp->pr_name);
517: #endif
1.4 mickey 518: if (af == AF_IPX || af == AF_UNSPEC)
519: for (tp = ipxprotox; tp->pr_name; tp++)
520: printproto(tp, tp->pr_name);
1.1 deraadt 521: if (af == AF_NS || af == AF_UNSPEC)
522: for (tp = nsprotox; tp->pr_name; tp++)
523: printproto(tp, tp->pr_name);
524: if (af == AF_ISO || af == AF_UNSPEC)
525: for (tp = isoprotox; tp->pr_name; tp++)
526: printproto(tp, tp->pr_name);
527: if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag)
528: unixpr(nl[N_UNIXSW].n_value);
1.12 denny 529: if (af == AF_APPLETALK || af == AF_UNSPEC)
530: for (tp = atalkprotox; tp->pr_name; tp++)
531: printproto(tp, tp->pr_name);
1.1 deraadt 532: exit(0);
533: }
534:
535: /*
536: * Print out protocol statistics or control blocks (per sflag).
537: * If the interface was not specifically requested, and the symbol
538: * is not in the namelist, ignore this one.
539: */
540: static void
541: printproto(tp, name)
542: register struct protox *tp;
543: char *name;
544: {
545: void (*pr)();
546: u_long off;
547:
548: if (sflag) {
549: pr = tp->pr_stats;
550: off = nl[tp->pr_sindex].n_value;
551: } else {
552: pr = tp->pr_cblocks;
553: off = nl[tp->pr_index].n_value;
554: }
555: if (pr != NULL && (off || af != AF_UNSPEC))
556: (*pr)(off, name);
557: }
558:
559: /*
560: * Read kernel memory, return 0 on success.
561: */
562: int
563: kread(addr, buf, size)
564: u_long addr;
565: char *buf;
566: int size;
567: {
568:
569: if (kvm_read(kvmd, addr, buf, size) != size) {
1.2 deraadt 570: (void)fprintf(stderr, "%s: %s\n", __progname,
1.1 deraadt 571: kvm_geterr(kvmd));
572: return (-1);
573: }
574: return (0);
575: }
576:
577: char *
578: plural(n)
579: int n;
580: {
581: return (n != 1 ? "s" : "");
582: }
583:
584: char *
585: plurales(n)
586: int n;
587: {
588: return (n != 1 ? "es" : "");
589: }
590:
591: /*
592: * Find the protox for the given "well-known" name.
593: */
594: static struct protox *
595: knownname(name)
596: char *name;
597: {
598: struct protox **tpp, *tp;
599:
600: for (tpp = protoprotox; *tpp; tpp++)
601: for (tp = *tpp; tp->pr_name; tp++)
602: if (strcmp(tp->pr_name, name) == 0)
603: return (tp);
604: return (NULL);
605: }
606:
607: /*
608: * Find the protox corresponding to name.
609: */
610: static struct protox *
611: name2protox(name)
612: char *name;
613: {
614: struct protox *tp;
615: char **alias; /* alias from p->aliases */
616: struct protoent *p;
617:
618: /*
619: * Try to find the name in the list of "well-known" names. If that
620: * fails, check if name is an alias for an Internet protocol.
621: */
1.11 millert 622: if ((tp = knownname(name)))
1.1 deraadt 623: return (tp);
624:
625: setprotoent(1); /* make protocol lookup cheaper */
1.11 millert 626: while ((p = getprotoent())) {
1.1 deraadt 627: /* assert: name not same as p->name */
628: for (alias = p->p_aliases; *alias; alias++)
629: if (strcmp(name, *alias) == 0) {
630: endprotoent();
631: return (knownname(p->p_name));
632: }
633: }
634: endprotoent();
635: return (NULL);
636: }
637:
638: static void
639: usage()
640: {
641: (void)fprintf(stderr,
1.2 deraadt 642: "usage: %s [-Aan] [-f address_family] [-M core] [-N system]\n", __progname);
1.1 deraadt 643: (void)fprintf(stderr,
1.17 d 644: " %s [-gimnrs] [-f address_family] [-M core] [-N system]\n", __progname);
1.1 deraadt 645: (void)fprintf(stderr,
1.2 deraadt 646: " %s [-n] [-I interface] [-M core] [-N system] [-w wait]\n", __progname);
1.1 deraadt 647: (void)fprintf(stderr,
1.2 deraadt 648: " %s [-M core] [-N system] [-p protocol]\n", __progname);
1.1 deraadt 649: exit(1);
650: }