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1.3 ! deraadt 1: /* $OpenBSD: main.c,v 1.9 1996/05/07 02:55:02 thorpej 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
1.3 ! deraadt 47: static char *rcsid = "$OpenBSD: main.c,v 1.9 1996/05/07 02:55:02 thorpej 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" },
136: "",
137: };
138:
139: struct protox {
140: u_char pr_index; /* index into nlist of cb head */
141: u_char pr_sindex; /* index into nlist of stat block */
142: u_char pr_wanted; /* 1 if wanted, 0 otherwise */
143: void (*pr_cblocks)(); /* control blocks printing routine */
144: void (*pr_stats)(); /* statistics printing routine */
145: char *pr_name; /* well-known name */
146: } protox[] = {
147: { N_TCBTABLE, N_TCPSTAT, 1, protopr,
148: tcp_stats, "tcp" },
149: { N_UDBTABLE, N_UDPSTAT, 1, protopr,
150: udp_stats, "udp" },
151: { -1, N_IPSTAT, 1, 0,
152: ip_stats, "ip" },
153: { -1, N_ICMPSTAT, 1, 0,
154: icmp_stats, "icmp" },
155: { -1, N_IGMPSTAT, 1, 0,
156: igmp_stats, "igmp" },
157: { -1, -1, 0, 0,
158: 0, 0 }
159: };
160:
161: struct protox nsprotox[] = {
162: { N_IDP, N_IDPSTAT, 1, nsprotopr,
163: idp_stats, "idp" },
164: { N_IDP, N_SPPSTAT, 1, nsprotopr,
165: spp_stats, "spp" },
166: { -1, N_NSERR, 1, 0,
167: nserr_stats, "ns_err" },
168: { -1, -1, 0, 0,
169: 0, 0 }
170: };
171:
172: struct protox isoprotox[] = {
173: { ISO_TP, N_TPSTAT, 1, iso_protopr,
174: tp_stats, "tp" },
175: { N_CLTP, N_CLTPSTAT, 1, iso_protopr,
176: cltp_stats, "cltp" },
177: { -1, N_CLNPSTAT, 1, 0,
178: clnp_stats, "clnp"},
179: { -1, N_ESISSTAT, 1, 0,
180: esis_stats, "esis"},
181: { -1, -1, 0, 0,
182: 0, 0 }
183: };
184:
185: struct protox *protoprotox[] = { protox, nsprotox, isoprotox, NULL };
186:
187: static void printproto __P((struct protox *, char *));
188: static void usage __P((void));
189: static struct protox *name2protox __P((char *));
190: static struct protox *knownname __P((char *));
191:
192: kvm_t *kvmd;
193:
194: int
195: main(argc, argv)
196: int argc;
197: char *argv[];
198: {
199: extern char *optarg;
200: extern int optind;
201: register struct protoent *p;
202: register struct protox *tp; /* for printing cblocks & stats */
203: register char *cp;
204: int ch;
205: char *nlistf = NULL, *memf = NULL;
206: char buf[_POSIX2_LINE_MAX];
207:
208: af = AF_UNSPEC;
209:
210: while ((ch = getopt(argc, argv, "Aadf:ghI:iM:mN:np:rstuw:")) != EOF)
211: switch(ch) {
212: case 'A':
213: Aflag = 1;
214: break;
215: case 'a':
216: aflag = 1;
217: break;
218: case 'd':
219: dflag = 1;
220: break;
221: case 'f':
222: if (strcmp(optarg, "ns") == 0)
223: af = AF_NS;
224: else if (strcmp(optarg, "inet") == 0)
225: af = AF_INET;
226: else if (strcmp(optarg, "unix") == 0)
227: af = AF_UNIX;
228: else if (strcmp(optarg, "iso") == 0)
229: af = AF_ISO;
230: else {
231: (void)fprintf(stderr,
232: "%s: %s: unknown address family\n",
1.2 deraadt 233: __progname, optarg);
1.1 deraadt 234: exit(1);
235: }
236: break;
237: case 'g':
238: gflag = 1;
239: break;
1.2 deraadt 240: case 'I':
1.1 deraadt 241: iflag = 1;
1.2 deraadt 242: interface = optarg;
1.1 deraadt 243: break;
244: case 'i':
245: iflag = 1;
246: break;
247: case 'M':
248: memf = optarg;
249: break;
250: case 'm':
251: mflag = 1;
252: break;
253: case 'N':
254: nlistf = optarg;
255: break;
256: case 'n':
257: nflag = 1;
258: break;
259: case 'p':
260: if ((tp = name2protox(optarg)) == NULL) {
261: (void)fprintf(stderr,
262: "%s: %s: unknown or uninstrumented protocol\n",
1.2 deraadt 263: __progname, optarg);
1.1 deraadt 264: exit(1);
265: }
266: pflag = 1;
267: break;
268: case 'r':
269: rflag = 1;
270: break;
271: case 's':
272: ++sflag;
273: break;
274: case 't':
275: tflag = 1;
276: break;
277: case 'u':
278: af = AF_UNIX;
279: break;
280: case 'w':
281: interval = atoi(optarg);
282: iflag = 1;
283: break;
284: case '?':
285: default:
286: usage();
287: }
288: argv += optind;
289: argc -= optind;
290:
291: #define BACKWARD_COMPATIBILITY
292: #ifdef BACKWARD_COMPATIBILITY
293: if (*argv) {
294: if (isdigit(**argv)) {
295: interval = atoi(*argv);
296: if (interval <= 0)
297: usage();
298: ++argv;
299: iflag = 1;
300: }
301: if (*argv) {
302: nlistf = *argv;
303: if (*++argv)
304: memf = *argv;
305: }
306: }
307: #endif
308:
309: /*
310: * Discard setgid privileges if not the running kernel so that bad
311: * guys can't print interesting stuff from kernel memory.
312: */
313: if (nlistf != NULL || memf != NULL)
314: setgid(getgid());
315:
1.2 deraadt 316: if ((kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY,
317: buf)) == NULL) {
318: fprintf(stderr, "%s: kvm_open: %s\n", __progname, buf);
1.1 deraadt 319: exit(1);
320: }
321: if (kvm_nlist(kvmd, nl) < 0 || nl[0].n_type == 0) {
322: if (nlistf)
1.2 deraadt 323: fprintf(stderr, "%s: %s: no namelist\n", __progname,
324: nlistf);
1.1 deraadt 325: else
1.2 deraadt 326: fprintf(stderr, "%s: no namelist\n", __progname);
1.1 deraadt 327: exit(1);
328: }
329: if (mflag) {
330: mbpr(nl[N_MBSTAT].n_value);
331: exit(0);
332: }
333: if (pflag) {
334: if (tp->pr_stats)
335: (*tp->pr_stats)(nl[tp->pr_sindex].n_value,
336: tp->pr_name);
337: else
338: printf("%s: no stats routine\n", tp->pr_name);
339: exit(0);
340: }
341: /*
342: * Keep file descriptors open to avoid overhead
343: * of open/close on each call to get* routines.
344: */
345: sethostent(1);
346: setnetent(1);
347: if (iflag) {
348: intpr(interval, nl[N_IFNET].n_value);
349: exit(0);
350: }
351: if (rflag) {
352: if (sflag)
353: rt_stats(nl[N_RTSTAT].n_value);
354: else
355: routepr(nl[N_RTREE].n_value);
356: exit(0);
357: }
358: if (gflag) {
359: if (sflag)
360: mrt_stats(nl[N_MRTPROTO].n_value,
361: nl[N_MRTSTAT].n_value);
362: else
363: mroutepr(nl[N_MRTPROTO].n_value,
364: nl[N_MFCHASHTBL].n_value,
365: nl[N_MFCHASH].n_value,
366: nl[N_VIFTABLE].n_value);
367: exit(0);
368: }
369: if (af == AF_INET || af == AF_UNSPEC) {
370: setprotoent(1);
371: setservent(1);
372: /* ugh, this is O(MN) ... why do we do this? */
373: while (p = getprotoent()) {
374: for (tp = protox; tp->pr_name; tp++)
375: if (strcmp(tp->pr_name, p->p_name) == 0)
376: break;
377: if (tp->pr_name == 0 || tp->pr_wanted == 0)
378: continue;
379: printproto(tp, p->p_name);
380: }
381: endprotoent();
382: }
383: if (af == AF_NS || af == AF_UNSPEC)
384: for (tp = nsprotox; tp->pr_name; tp++)
385: printproto(tp, tp->pr_name);
386: if (af == AF_ISO || af == AF_UNSPEC)
387: for (tp = isoprotox; tp->pr_name; tp++)
388: printproto(tp, tp->pr_name);
389: if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag)
390: unixpr(nl[N_UNIXSW].n_value);
391: exit(0);
392: }
393:
394: /*
395: * Print out protocol statistics or control blocks (per sflag).
396: * If the interface was not specifically requested, and the symbol
397: * is not in the namelist, ignore this one.
398: */
399: static void
400: printproto(tp, name)
401: register struct protox *tp;
402: char *name;
403: {
404: void (*pr)();
405: u_long off;
406:
407: if (sflag) {
408: pr = tp->pr_stats;
409: off = nl[tp->pr_sindex].n_value;
410: } else {
411: pr = tp->pr_cblocks;
412: off = nl[tp->pr_index].n_value;
413: }
414: if (pr != NULL && (off || af != AF_UNSPEC))
415: (*pr)(off, name);
416: }
417:
418: /*
419: * Read kernel memory, return 0 on success.
420: */
421: int
422: kread(addr, buf, size)
423: u_long addr;
424: char *buf;
425: int size;
426: {
427:
428: if (kvm_read(kvmd, addr, buf, size) != size) {
1.2 deraadt 429: (void)fprintf(stderr, "%s: %s\n", __progname,
1.1 deraadt 430: kvm_geterr(kvmd));
431: return (-1);
432: }
433: return (0);
434: }
435:
436: char *
437: plural(n)
438: int n;
439: {
440: return (n != 1 ? "s" : "");
441: }
442:
443: char *
444: plurales(n)
445: int n;
446: {
447: return (n != 1 ? "es" : "");
448: }
449:
450: /*
451: * Find the protox for the given "well-known" name.
452: */
453: static struct protox *
454: knownname(name)
455: char *name;
456: {
457: struct protox **tpp, *tp;
458:
459: for (tpp = protoprotox; *tpp; tpp++)
460: for (tp = *tpp; tp->pr_name; tp++)
461: if (strcmp(tp->pr_name, name) == 0)
462: return (tp);
463: return (NULL);
464: }
465:
466: /*
467: * Find the protox corresponding to name.
468: */
469: static struct protox *
470: name2protox(name)
471: char *name;
472: {
473: struct protox *tp;
474: char **alias; /* alias from p->aliases */
475: struct protoent *p;
476:
477: /*
478: * Try to find the name in the list of "well-known" names. If that
479: * fails, check if name is an alias for an Internet protocol.
480: */
481: if (tp = knownname(name))
482: return (tp);
483:
484: setprotoent(1); /* make protocol lookup cheaper */
485: while (p = getprotoent()) {
486: /* assert: name not same as p->name */
487: for (alias = p->p_aliases; *alias; alias++)
488: if (strcmp(name, *alias) == 0) {
489: endprotoent();
490: return (knownname(p->p_name));
491: }
492: }
493: endprotoent();
494: return (NULL);
495: }
496:
497: static void
498: usage()
499: {
500: (void)fprintf(stderr,
1.2 deraadt 501: "usage: %s [-Aan] [-f address_family] [-M core] [-N system]\n", __progname);
1.1 deraadt 502: (void)fprintf(stderr,
1.2 deraadt 503: " %s [-ghimnrs] [-f address_family] [-M core] [-N system]\n", __progname);
1.1 deraadt 504: (void)fprintf(stderr,
1.2 deraadt 505: " %s [-n] [-I interface] [-M core] [-N system] [-w wait]\n", __progname);
1.1 deraadt 506: (void)fprintf(stderr,
1.2 deraadt 507: " %s [-M core] [-N system] [-p protocol]\n", __progname);
1.1 deraadt 508: exit(1);
509: }