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1.5 ! tholo 1: /* $OpenBSD: main.c,v 1.4 1996/08/16 09:29:33 mickey 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
1.5 ! tholo 47: static char *rcsid = "$OpenBSD: main.c,v 1.4 1996/08/16 09:29:33 mickey 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"},
1.1 deraadt 144: "",
145: };
146:
147: struct protox {
148: u_char pr_index; /* index into nlist of cb head */
149: u_char pr_sindex; /* index into nlist of stat block */
150: u_char pr_wanted; /* 1 if wanted, 0 otherwise */
151: void (*pr_cblocks)(); /* control blocks printing routine */
152: void (*pr_stats)(); /* statistics printing routine */
153: char *pr_name; /* well-known name */
154: } protox[] = {
155: { N_TCBTABLE, N_TCPSTAT, 1, protopr,
156: tcp_stats, "tcp" },
157: { N_UDBTABLE, N_UDPSTAT, 1, protopr,
158: udp_stats, "udp" },
159: { -1, N_IPSTAT, 1, 0,
160: ip_stats, "ip" },
161: { -1, N_ICMPSTAT, 1, 0,
162: icmp_stats, "icmp" },
163: { -1, N_IGMPSTAT, 1, 0,
164: igmp_stats, "igmp" },
165: { -1, -1, 0, 0,
166: 0, 0 }
167: };
168:
1.4 mickey 169: struct protox ipxprotox[] = {
170: { N_IPX, N_IPXSTAT, 1, ipxprotopr,
171: ipx_stats, "ipx" },
172: { N_IPX, N_SPXSTAT, 1, ipxprotopr,
173: spx_stats, "spx" },
174: { -1, N_IPXERR, 1, 0,
175: ipxerr_stats, "ipx_err" },
176: { -1, -1, 0, 0,
177: 0, 0 }
178: };
179:
1.1 deraadt 180: struct protox nsprotox[] = {
181: { N_IDP, N_IDPSTAT, 1, nsprotopr,
182: idp_stats, "idp" },
183: { N_IDP, N_SPPSTAT, 1, nsprotopr,
184: spp_stats, "spp" },
185: { -1, N_NSERR, 1, 0,
186: nserr_stats, "ns_err" },
187: { -1, -1, 0, 0,
188: 0, 0 }
189: };
190:
191: struct protox isoprotox[] = {
192: { ISO_TP, N_TPSTAT, 1, iso_protopr,
193: tp_stats, "tp" },
194: { N_CLTP, N_CLTPSTAT, 1, iso_protopr,
195: cltp_stats, "cltp" },
196: { -1, N_CLNPSTAT, 1, 0,
197: clnp_stats, "clnp"},
198: { -1, N_ESISSTAT, 1, 0,
199: esis_stats, "esis"},
200: { -1, -1, 0, 0,
201: 0, 0 }
202: };
203:
1.4 mickey 204: struct protox *protoprotox[] = { protox, ipxprotox, nsprotox, isoprotox, NULL };
1.1 deraadt 205:
206: static void printproto __P((struct protox *, char *));
207: static void usage __P((void));
208: static struct protox *name2protox __P((char *));
209: static struct protox *knownname __P((char *));
210:
211: kvm_t *kvmd;
212:
213: int
214: main(argc, argv)
215: int argc;
216: char *argv[];
217: {
218: extern char *optarg;
219: extern int optind;
220: register struct protoent *p;
221: register struct protox *tp; /* for printing cblocks & stats */
222: register char *cp;
223: int ch;
224: char *nlistf = NULL, *memf = NULL;
225: char buf[_POSIX2_LINE_MAX];
226:
227: af = AF_UNSPEC;
228:
229: while ((ch = getopt(argc, argv, "Aadf:ghI:iM:mN:np:rstuw:")) != EOF)
230: switch(ch) {
231: case 'A':
232: Aflag = 1;
233: break;
234: case 'a':
235: aflag = 1;
236: break;
237: case 'd':
238: dflag = 1;
239: break;
240: case 'f':
1.4 mickey 241: if (strcmp(optarg, "inet") == 0)
1.1 deraadt 242: af = AF_INET;
243: else if (strcmp(optarg, "unix") == 0)
244: af = AF_UNIX;
1.4 mickey 245: else if (strcmp(optarg, "ipx") == 0)
246: af = AF_IPX;
247: else if (strcmp(optarg, "ns") == 0)
248: af = AF_NS;
1.1 deraadt 249: else if (strcmp(optarg, "iso") == 0)
250: af = AF_ISO;
251: else {
252: (void)fprintf(stderr,
253: "%s: %s: unknown address family\n",
1.2 deraadt 254: __progname, optarg);
1.1 deraadt 255: exit(1);
256: }
257: break;
258: case 'g':
259: gflag = 1;
260: break;
1.2 deraadt 261: case 'I':
1.1 deraadt 262: iflag = 1;
1.2 deraadt 263: interface = optarg;
1.1 deraadt 264: break;
265: case 'i':
266: iflag = 1;
267: break;
268: case 'M':
269: memf = optarg;
270: break;
271: case 'm':
272: mflag = 1;
273: break;
274: case 'N':
275: nlistf = optarg;
276: break;
277: case 'n':
278: nflag = 1;
279: break;
280: case 'p':
281: if ((tp = name2protox(optarg)) == NULL) {
282: (void)fprintf(stderr,
283: "%s: %s: unknown or uninstrumented protocol\n",
1.2 deraadt 284: __progname, optarg);
1.1 deraadt 285: exit(1);
286: }
287: pflag = 1;
288: break;
289: case 'r':
290: rflag = 1;
291: break;
292: case 's':
293: ++sflag;
294: break;
295: case 't':
296: tflag = 1;
297: break;
298: case 'u':
299: af = AF_UNIX;
300: break;
301: case 'w':
302: interval = atoi(optarg);
303: iflag = 1;
304: break;
305: case '?':
306: default:
307: usage();
308: }
309: argv += optind;
310: argc -= optind;
311:
312: #define BACKWARD_COMPATIBILITY
313: #ifdef BACKWARD_COMPATIBILITY
314: if (*argv) {
315: if (isdigit(**argv)) {
316: interval = atoi(*argv);
317: if (interval <= 0)
318: usage();
319: ++argv;
320: iflag = 1;
321: }
322: if (*argv) {
323: nlistf = *argv;
324: if (*++argv)
325: memf = *argv;
326: }
327: }
328: #endif
329:
330: /*
331: * Discard setgid privileges if not the running kernel so that bad
332: * guys can't print interesting stuff from kernel memory.
333: */
1.5 ! tholo 334: if (nlistf != NULL || memf != NULL) {
! 335: setegid(getgid());
1.1 deraadt 336: setgid(getgid());
1.5 ! tholo 337: }
1.1 deraadt 338:
1.2 deraadt 339: if ((kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY,
340: buf)) == NULL) {
341: fprintf(stderr, "%s: kvm_open: %s\n", __progname, buf);
1.1 deraadt 342: exit(1);
343: }
344: if (kvm_nlist(kvmd, nl) < 0 || nl[0].n_type == 0) {
345: if (nlistf)
1.2 deraadt 346: fprintf(stderr, "%s: %s: no namelist\n", __progname,
347: nlistf);
1.1 deraadt 348: else
1.2 deraadt 349: fprintf(stderr, "%s: no namelist\n", __progname);
1.1 deraadt 350: exit(1);
351: }
352: if (mflag) {
353: mbpr(nl[N_MBSTAT].n_value);
354: exit(0);
355: }
356: if (pflag) {
357: if (tp->pr_stats)
358: (*tp->pr_stats)(nl[tp->pr_sindex].n_value,
359: tp->pr_name);
360: else
361: printf("%s: no stats routine\n", tp->pr_name);
362: exit(0);
363: }
364: /*
365: * Keep file descriptors open to avoid overhead
366: * of open/close on each call to get* routines.
367: */
368: sethostent(1);
369: setnetent(1);
370: if (iflag) {
371: intpr(interval, nl[N_IFNET].n_value);
372: exit(0);
373: }
374: if (rflag) {
375: if (sflag)
376: rt_stats(nl[N_RTSTAT].n_value);
377: else
378: routepr(nl[N_RTREE].n_value);
379: exit(0);
380: }
381: if (gflag) {
382: if (sflag)
383: mrt_stats(nl[N_MRTPROTO].n_value,
384: nl[N_MRTSTAT].n_value);
385: else
386: mroutepr(nl[N_MRTPROTO].n_value,
387: nl[N_MFCHASHTBL].n_value,
388: nl[N_MFCHASH].n_value,
389: nl[N_VIFTABLE].n_value);
390: exit(0);
391: }
392: if (af == AF_INET || af == AF_UNSPEC) {
393: setprotoent(1);
394: setservent(1);
395: /* ugh, this is O(MN) ... why do we do this? */
396: while (p = getprotoent()) {
397: for (tp = protox; tp->pr_name; tp++)
398: if (strcmp(tp->pr_name, p->p_name) == 0)
399: break;
400: if (tp->pr_name == 0 || tp->pr_wanted == 0)
401: continue;
402: printproto(tp, p->p_name);
403: }
404: endprotoent();
405: }
1.4 mickey 406: if (af == AF_IPX || af == AF_UNSPEC)
407: for (tp = ipxprotox; tp->pr_name; tp++)
408: printproto(tp, tp->pr_name);
1.1 deraadt 409: if (af == AF_NS || af == AF_UNSPEC)
410: for (tp = nsprotox; tp->pr_name; tp++)
411: printproto(tp, tp->pr_name);
412: if (af == AF_ISO || af == AF_UNSPEC)
413: for (tp = isoprotox; tp->pr_name; tp++)
414: printproto(tp, tp->pr_name);
415: if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag)
416: unixpr(nl[N_UNIXSW].n_value);
417: exit(0);
418: }
419:
420: /*
421: * Print out protocol statistics or control blocks (per sflag).
422: * If the interface was not specifically requested, and the symbol
423: * is not in the namelist, ignore this one.
424: */
425: static void
426: printproto(tp, name)
427: register struct protox *tp;
428: char *name;
429: {
430: void (*pr)();
431: u_long off;
432:
433: if (sflag) {
434: pr = tp->pr_stats;
435: off = nl[tp->pr_sindex].n_value;
436: } else {
437: pr = tp->pr_cblocks;
438: off = nl[tp->pr_index].n_value;
439: }
440: if (pr != NULL && (off || af != AF_UNSPEC))
441: (*pr)(off, name);
442: }
443:
444: /*
445: * Read kernel memory, return 0 on success.
446: */
447: int
448: kread(addr, buf, size)
449: u_long addr;
450: char *buf;
451: int size;
452: {
453:
454: if (kvm_read(kvmd, addr, buf, size) != size) {
1.2 deraadt 455: (void)fprintf(stderr, "%s: %s\n", __progname,
1.1 deraadt 456: kvm_geterr(kvmd));
457: return (-1);
458: }
459: return (0);
460: }
461:
462: char *
463: plural(n)
464: int n;
465: {
466: return (n != 1 ? "s" : "");
467: }
468:
469: char *
470: plurales(n)
471: int n;
472: {
473: return (n != 1 ? "es" : "");
474: }
475:
476: /*
477: * Find the protox for the given "well-known" name.
478: */
479: static struct protox *
480: knownname(name)
481: char *name;
482: {
483: struct protox **tpp, *tp;
484:
485: for (tpp = protoprotox; *tpp; tpp++)
486: for (tp = *tpp; tp->pr_name; tp++)
487: if (strcmp(tp->pr_name, name) == 0)
488: return (tp);
489: return (NULL);
490: }
491:
492: /*
493: * Find the protox corresponding to name.
494: */
495: static struct protox *
496: name2protox(name)
497: char *name;
498: {
499: struct protox *tp;
500: char **alias; /* alias from p->aliases */
501: struct protoent *p;
502:
503: /*
504: * Try to find the name in the list of "well-known" names. If that
505: * fails, check if name is an alias for an Internet protocol.
506: */
507: if (tp = knownname(name))
508: return (tp);
509:
510: setprotoent(1); /* make protocol lookup cheaper */
511: while (p = getprotoent()) {
512: /* assert: name not same as p->name */
513: for (alias = p->p_aliases; *alias; alias++)
514: if (strcmp(name, *alias) == 0) {
515: endprotoent();
516: return (knownname(p->p_name));
517: }
518: }
519: endprotoent();
520: return (NULL);
521: }
522:
523: static void
524: usage()
525: {
526: (void)fprintf(stderr,
1.2 deraadt 527: "usage: %s [-Aan] [-f address_family] [-M core] [-N system]\n", __progname);
1.1 deraadt 528: (void)fprintf(stderr,
1.2 deraadt 529: " %s [-ghimnrs] [-f address_family] [-M core] [-N system]\n", __progname);
1.1 deraadt 530: (void)fprintf(stderr,
1.2 deraadt 531: " %s [-n] [-I interface] [-M core] [-N system] [-w wait]\n", __progname);
1.1 deraadt 532: (void)fprintf(stderr,
1.2 deraadt 533: " %s [-M core] [-N system] [-p protocol]\n", __progname);
1.1 deraadt 534: exit(1);
535: }