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1.2 ! deraadt 1: /* $NetBSD: main.c,v 1.9 1996/05/07 02:55:02 thorpej Exp $ */
1.1 deraadt 2:
3: /*
4: * Copyright (c) 1983, 1988, 1993
5: * Regents of the University of California. All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: * 3. All advertising materials mentioning features or use of this software
16: * must display the following acknowledgement:
17: * This product includes software developed by the University of
18: * California, Berkeley and its contributors.
19: * 4. Neither the name of the University nor the names of its contributors
20: * may be used to endorse or promote products derived from this software
21: * without specific prior written permission.
22: *
23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33: * SUCH DAMAGE.
34: */
35:
36: #ifndef lint
37: char copyright[] =
38: "@(#) Copyright (c) 1983, 1988, 1993\n\
39: Regents of the University of California. All rights reserved.\n";
40: #endif /* not lint */
41:
42: #ifndef lint
43: #if 0
44: static char sccsid[] = "from: @(#)main.c 8.4 (Berkeley) 3/1/94";
45: #else
1.2 ! deraadt 46: static char *rcsid = "$NetBSD: main.c,v 1.9 1996/05/07 02:55:02 thorpej Exp $";
1.1 deraadt 47: #endif
48: #endif /* not lint */
49:
50: #include <sys/param.h>
51: #include <sys/file.h>
52: #include <sys/protosw.h>
53: #include <sys/socket.h>
54:
55: #include <netinet/in.h>
56:
57: #include <ctype.h>
58: #include <errno.h>
59: #include <kvm.h>
60: #include <limits.h>
61: #include <netdb.h>
62: #include <nlist.h>
63: #include <paths.h>
64: #include <stdio.h>
65: #include <stdlib.h>
66: #include <string.h>
67: #include <unistd.h>
68: #include "netstat.h"
69:
70: struct nlist nl[] = {
71: #define N_MBSTAT 0
72: { "_mbstat" },
73: #define N_IPSTAT 1
74: { "_ipstat" },
75: #define N_TCBTABLE 2
76: { "_tcbtable" },
77: #define N_TCPSTAT 3
78: { "_tcpstat" },
79: #define N_UDBTABLE 4
80: { "_udbtable" },
81: #define N_UDPSTAT 5
82: { "_udpstat" },
83: #define N_IFNET 6
84: { "_ifnet" },
85: #define N_IMP 7
86: { "_imp_softc" },
87: #define N_ICMPSTAT 8
88: { "_icmpstat" },
89: #define N_RTSTAT 9
90: { "_rtstat" },
91: #define N_UNIXSW 10
92: { "_unixsw" },
93: #define N_IDP 11
94: { "_nspcb"},
95: #define N_IDPSTAT 12
96: { "_idpstat"},
97: #define N_SPPSTAT 13
98: { "_spp_istat"},
99: #define N_NSERR 14
100: { "_ns_errstat"},
101: #define N_CLNPSTAT 15
102: { "_clnp_stat"},
103: #define IN_NOTUSED 16
104: { "_tp_inpcb" },
105: #define ISO_TP 17
106: { "_tp_refinfo" },
107: #define N_TPSTAT 18
108: { "_tp_stat" },
109: #define N_ESISSTAT 19
110: { "_esis_stat"},
111: #define N_NIMP 20
112: { "_nimp"},
113: #define N_RTREE 21
114: { "_rt_tables"},
115: #define N_CLTP 22
116: { "_cltb"},
117: #define N_CLTPSTAT 23
118: { "_cltpstat"},
119: #define N_NFILE 24
120: { "_nfile" },
121: #define N_FILE 25
122: { "_file" },
123: #define N_IGMPSTAT 26
124: { "_igmpstat" },
125: #define N_MRTPROTO 27
126: { "_ip_mrtproto" },
127: #define N_MRTSTAT 28
128: { "_mrtstat" },
129: #define N_MFCHASHTBL 29
130: { "_mfchashtbl" },
131: #define N_MFCHASH 30
132: { "_mfchash" },
133: #define N_VIFTABLE 31
134: { "_viftable" },
135: "",
136: };
137:
138: struct protox {
139: u_char pr_index; /* index into nlist of cb head */
140: u_char pr_sindex; /* index into nlist of stat block */
141: u_char pr_wanted; /* 1 if wanted, 0 otherwise */
142: void (*pr_cblocks)(); /* control blocks printing routine */
143: void (*pr_stats)(); /* statistics printing routine */
144: char *pr_name; /* well-known name */
145: } protox[] = {
146: { N_TCBTABLE, N_TCPSTAT, 1, protopr,
147: tcp_stats, "tcp" },
148: { N_UDBTABLE, N_UDPSTAT, 1, protopr,
149: udp_stats, "udp" },
150: { -1, N_IPSTAT, 1, 0,
151: ip_stats, "ip" },
152: { -1, N_ICMPSTAT, 1, 0,
153: icmp_stats, "icmp" },
154: { -1, N_IGMPSTAT, 1, 0,
155: igmp_stats, "igmp" },
156: { -1, -1, 0, 0,
157: 0, 0 }
158: };
159:
160: struct protox nsprotox[] = {
161: { N_IDP, N_IDPSTAT, 1, nsprotopr,
162: idp_stats, "idp" },
163: { N_IDP, N_SPPSTAT, 1, nsprotopr,
164: spp_stats, "spp" },
165: { -1, N_NSERR, 1, 0,
166: nserr_stats, "ns_err" },
167: { -1, -1, 0, 0,
168: 0, 0 }
169: };
170:
171: struct protox isoprotox[] = {
172: { ISO_TP, N_TPSTAT, 1, iso_protopr,
173: tp_stats, "tp" },
174: { N_CLTP, N_CLTPSTAT, 1, iso_protopr,
175: cltp_stats, "cltp" },
176: { -1, N_CLNPSTAT, 1, 0,
177: clnp_stats, "clnp"},
178: { -1, N_ESISSTAT, 1, 0,
179: esis_stats, "esis"},
180: { -1, -1, 0, 0,
181: 0, 0 }
182: };
183:
184: struct protox *protoprotox[] = { protox, nsprotox, isoprotox, NULL };
185:
186: static void printproto __P((struct protox *, char *));
187: static void usage __P((void));
188: static struct protox *name2protox __P((char *));
189: static struct protox *knownname __P((char *));
190:
191: kvm_t *kvmd;
192:
193: int
194: main(argc, argv)
195: int argc;
196: char *argv[];
197: {
198: extern char *optarg;
199: extern int optind;
200: register struct protoent *p;
201: register struct protox *tp; /* for printing cblocks & stats */
202: register char *cp;
203: int ch;
204: char *nlistf = NULL, *memf = NULL;
205: char buf[_POSIX2_LINE_MAX];
206:
207: af = AF_UNSPEC;
208:
209: while ((ch = getopt(argc, argv, "Aadf:ghI:iM:mN:np:rstuw:")) != EOF)
210: switch(ch) {
211: case 'A':
212: Aflag = 1;
213: break;
214: case 'a':
215: aflag = 1;
216: break;
217: case 'd':
218: dflag = 1;
219: break;
220: case 'f':
221: if (strcmp(optarg, "ns") == 0)
222: af = AF_NS;
223: else if (strcmp(optarg, "inet") == 0)
224: af = AF_INET;
225: else if (strcmp(optarg, "unix") == 0)
226: af = AF_UNIX;
227: else if (strcmp(optarg, "iso") == 0)
228: af = AF_ISO;
229: else {
230: (void)fprintf(stderr,
231: "%s: %s: unknown address family\n",
1.2 ! deraadt 232: __progname, optarg);
1.1 deraadt 233: exit(1);
234: }
235: break;
236: case 'g':
237: gflag = 1;
238: break;
1.2 ! deraadt 239: case 'I':
1.1 deraadt 240: iflag = 1;
1.2 ! deraadt 241: interface = optarg;
1.1 deraadt 242: break;
243: case 'i':
244: iflag = 1;
245: break;
246: case 'M':
247: memf = optarg;
248: break;
249: case 'm':
250: mflag = 1;
251: break;
252: case 'N':
253: nlistf = optarg;
254: break;
255: case 'n':
256: nflag = 1;
257: break;
258: case 'p':
259: if ((tp = name2protox(optarg)) == NULL) {
260: (void)fprintf(stderr,
261: "%s: %s: unknown or uninstrumented protocol\n",
1.2 ! deraadt 262: __progname, optarg);
1.1 deraadt 263: exit(1);
264: }
265: pflag = 1;
266: break;
267: case 'r':
268: rflag = 1;
269: break;
270: case 's':
271: ++sflag;
272: break;
273: case 't':
274: tflag = 1;
275: break;
276: case 'u':
277: af = AF_UNIX;
278: break;
279: case 'w':
280: interval = atoi(optarg);
281: iflag = 1;
282: break;
283: case '?':
284: default:
285: usage();
286: }
287: argv += optind;
288: argc -= optind;
289:
290: #define BACKWARD_COMPATIBILITY
291: #ifdef BACKWARD_COMPATIBILITY
292: if (*argv) {
293: if (isdigit(**argv)) {
294: interval = atoi(*argv);
295: if (interval <= 0)
296: usage();
297: ++argv;
298: iflag = 1;
299: }
300: if (*argv) {
301: nlistf = *argv;
302: if (*++argv)
303: memf = *argv;
304: }
305: }
306: #endif
307:
308: /*
309: * Discard setgid privileges if not the running kernel so that bad
310: * guys can't print interesting stuff from kernel memory.
311: */
312: if (nlistf != NULL || memf != NULL)
313: setgid(getgid());
314:
1.2 ! deraadt 315: if ((kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY,
! 316: buf)) == NULL) {
! 317: fprintf(stderr, "%s: kvm_open: %s\n", __progname, buf);
1.1 deraadt 318: exit(1);
319: }
320: if (kvm_nlist(kvmd, nl) < 0 || nl[0].n_type == 0) {
321: if (nlistf)
1.2 ! deraadt 322: fprintf(stderr, "%s: %s: no namelist\n", __progname,
! 323: nlistf);
1.1 deraadt 324: else
1.2 ! deraadt 325: fprintf(stderr, "%s: no namelist\n", __progname);
1.1 deraadt 326: exit(1);
327: }
328: if (mflag) {
329: mbpr(nl[N_MBSTAT].n_value);
330: exit(0);
331: }
332: if (pflag) {
333: if (tp->pr_stats)
334: (*tp->pr_stats)(nl[tp->pr_sindex].n_value,
335: tp->pr_name);
336: else
337: printf("%s: no stats routine\n", tp->pr_name);
338: exit(0);
339: }
340: /*
341: * Keep file descriptors open to avoid overhead
342: * of open/close on each call to get* routines.
343: */
344: sethostent(1);
345: setnetent(1);
346: if (iflag) {
347: intpr(interval, nl[N_IFNET].n_value);
348: exit(0);
349: }
350: if (rflag) {
351: if (sflag)
352: rt_stats(nl[N_RTSTAT].n_value);
353: else
354: routepr(nl[N_RTREE].n_value);
355: exit(0);
356: }
357: if (gflag) {
358: if (sflag)
359: mrt_stats(nl[N_MRTPROTO].n_value,
360: nl[N_MRTSTAT].n_value);
361: else
362: mroutepr(nl[N_MRTPROTO].n_value,
363: nl[N_MFCHASHTBL].n_value,
364: nl[N_MFCHASH].n_value,
365: nl[N_VIFTABLE].n_value);
366: exit(0);
367: }
368: if (af == AF_INET || af == AF_UNSPEC) {
369: setprotoent(1);
370: setservent(1);
371: /* ugh, this is O(MN) ... why do we do this? */
372: while (p = getprotoent()) {
373: for (tp = protox; tp->pr_name; tp++)
374: if (strcmp(tp->pr_name, p->p_name) == 0)
375: break;
376: if (tp->pr_name == 0 || tp->pr_wanted == 0)
377: continue;
378: printproto(tp, p->p_name);
379: }
380: endprotoent();
381: }
382: if (af == AF_NS || af == AF_UNSPEC)
383: for (tp = nsprotox; tp->pr_name; tp++)
384: printproto(tp, tp->pr_name);
385: if (af == AF_ISO || af == AF_UNSPEC)
386: for (tp = isoprotox; tp->pr_name; tp++)
387: printproto(tp, tp->pr_name);
388: if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag)
389: unixpr(nl[N_UNIXSW].n_value);
390: exit(0);
391: }
392:
393: /*
394: * Print out protocol statistics or control blocks (per sflag).
395: * If the interface was not specifically requested, and the symbol
396: * is not in the namelist, ignore this one.
397: */
398: static void
399: printproto(tp, name)
400: register struct protox *tp;
401: char *name;
402: {
403: void (*pr)();
404: u_long off;
405:
406: if (sflag) {
407: pr = tp->pr_stats;
408: off = nl[tp->pr_sindex].n_value;
409: } else {
410: pr = tp->pr_cblocks;
411: off = nl[tp->pr_index].n_value;
412: }
413: if (pr != NULL && (off || af != AF_UNSPEC))
414: (*pr)(off, name);
415: }
416:
417: /*
418: * Read kernel memory, return 0 on success.
419: */
420: int
421: kread(addr, buf, size)
422: u_long addr;
423: char *buf;
424: int size;
425: {
426:
427: if (kvm_read(kvmd, addr, buf, size) != size) {
1.2 ! deraadt 428: (void)fprintf(stderr, "%s: %s\n", __progname,
1.1 deraadt 429: kvm_geterr(kvmd));
430: return (-1);
431: }
432: return (0);
433: }
434:
435: char *
436: plural(n)
437: int n;
438: {
439: return (n != 1 ? "s" : "");
440: }
441:
442: char *
443: plurales(n)
444: int n;
445: {
446: return (n != 1 ? "es" : "");
447: }
448:
449: /*
450: * Find the protox for the given "well-known" name.
451: */
452: static struct protox *
453: knownname(name)
454: char *name;
455: {
456: struct protox **tpp, *tp;
457:
458: for (tpp = protoprotox; *tpp; tpp++)
459: for (tp = *tpp; tp->pr_name; tp++)
460: if (strcmp(tp->pr_name, name) == 0)
461: return (tp);
462: return (NULL);
463: }
464:
465: /*
466: * Find the protox corresponding to name.
467: */
468: static struct protox *
469: name2protox(name)
470: char *name;
471: {
472: struct protox *tp;
473: char **alias; /* alias from p->aliases */
474: struct protoent *p;
475:
476: /*
477: * Try to find the name in the list of "well-known" names. If that
478: * fails, check if name is an alias for an Internet protocol.
479: */
480: if (tp = knownname(name))
481: return (tp);
482:
483: setprotoent(1); /* make protocol lookup cheaper */
484: while (p = getprotoent()) {
485: /* assert: name not same as p->name */
486: for (alias = p->p_aliases; *alias; alias++)
487: if (strcmp(name, *alias) == 0) {
488: endprotoent();
489: return (knownname(p->p_name));
490: }
491: }
492: endprotoent();
493: return (NULL);
494: }
495:
496: static void
497: usage()
498: {
499: (void)fprintf(stderr,
1.2 ! deraadt 500: "usage: %s [-Aan] [-f address_family] [-M core] [-N system]\n", __progname);
1.1 deraadt 501: (void)fprintf(stderr,
1.2 ! deraadt 502: " %s [-ghimnrs] [-f address_family] [-M core] [-N system]\n", __progname);
1.1 deraadt 503: (void)fprintf(stderr,
1.2 ! deraadt 504: " %s [-n] [-I interface] [-M core] [-N system] [-w wait]\n", __progname);
1.1 deraadt 505: (void)fprintf(stderr,
1.2 ! deraadt 506: " %s [-M core] [-N system] [-p protocol]\n", __progname);
1.1 deraadt 507: exit(1);
508: }