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1.10 ! angelos 1: /* $OpenBSD: main.c,v 1.9 1997/02/22 04:35:24 angelos 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
1.10 ! angelos 47: static char *rcsid = "$OpenBSD: main.c,v 1.9 1997/02/22 04:35:24 angelos 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
149: { "_ip4stat"},
1.1 deraadt 150: "",
151: };
152:
153: struct protox {
154: u_char pr_index; /* index into nlist of cb head */
155: u_char pr_sindex; /* index into nlist of stat block */
156: u_char pr_wanted; /* 1 if wanted, 0 otherwise */
157: void (*pr_cblocks)(); /* control blocks printing routine */
158: void (*pr_stats)(); /* statistics printing routine */
159: char *pr_name; /* well-known name */
160: } protox[] = {
161: { N_TCBTABLE, N_TCPSTAT, 1, protopr,
162: tcp_stats, "tcp" },
163: { N_UDBTABLE, N_UDPSTAT, 1, protopr,
164: udp_stats, "udp" },
165: { -1, N_IPSTAT, 1, 0,
166: ip_stats, "ip" },
167: { -1, N_ICMPSTAT, 1, 0,
168: icmp_stats, "icmp" },
169: { -1, N_IGMPSTAT, 1, 0,
170: igmp_stats, "igmp" },
1.8 angelos 171: { -1, N_AHSTAT, 1, 0,
172: ah_stats, "sipp-ah" },
173: { -1, N_ESPSTAT, 1, 0,
174: esp_stats, "sipp-esp" },
175: { -1, N_IP4STAT, 1, 0,
1.9 angelos 176: ip4_stats, "ipencap" },
1.1 deraadt 177: { -1, -1, 0, 0,
178: 0, 0 }
179: };
180:
1.4 mickey 181: struct protox ipxprotox[] = {
182: { N_IPX, N_IPXSTAT, 1, ipxprotopr,
183: ipx_stats, "ipx" },
184: { N_IPX, N_SPXSTAT, 1, ipxprotopr,
185: spx_stats, "spx" },
186: { -1, N_IPXERR, 1, 0,
187: ipxerr_stats, "ipx_err" },
188: { -1, -1, 0, 0,
189: 0, 0 }
190: };
191:
1.1 deraadt 192: struct protox nsprotox[] = {
193: { N_IDP, N_IDPSTAT, 1, nsprotopr,
194: idp_stats, "idp" },
195: { N_IDP, N_SPPSTAT, 1, nsprotopr,
196: spp_stats, "spp" },
197: { -1, N_NSERR, 1, 0,
198: nserr_stats, "ns_err" },
199: { -1, -1, 0, 0,
200: 0, 0 }
201: };
202:
203: struct protox isoprotox[] = {
204: { ISO_TP, N_TPSTAT, 1, iso_protopr,
205: tp_stats, "tp" },
206: { N_CLTP, N_CLTPSTAT, 1, iso_protopr,
207: cltp_stats, "cltp" },
208: { -1, N_CLNPSTAT, 1, 0,
209: clnp_stats, "clnp"},
210: { -1, N_ESISSTAT, 1, 0,
211: esis_stats, "esis"},
212: { -1, -1, 0, 0,
213: 0, 0 }
214: };
215:
1.4 mickey 216: struct protox *protoprotox[] = { protox, ipxprotox, nsprotox, isoprotox, NULL };
1.1 deraadt 217:
218: static void printproto __P((struct protox *, char *));
219: static void usage __P((void));
220: static struct protox *name2protox __P((char *));
221: static struct protox *knownname __P((char *));
222:
223: kvm_t *kvmd;
224:
225: int
226: main(argc, argv)
227: int argc;
228: char *argv[];
229: {
230: extern char *optarg;
231: extern int optind;
232: register struct protoent *p;
233: register struct protox *tp; /* for printing cblocks & stats */
234: register char *cp;
235: int ch;
236: char *nlistf = NULL, *memf = NULL;
237: char buf[_POSIX2_LINE_MAX];
238:
239: af = AF_UNSPEC;
240:
1.6 millert 241: while ((ch = getopt(argc, argv, "Aadf:ghI:iM:mN:np:rstuw:")) != -1)
1.1 deraadt 242: switch(ch) {
243: case 'A':
244: Aflag = 1;
245: break;
246: case 'a':
247: aflag = 1;
248: break;
249: case 'd':
250: dflag = 1;
251: break;
252: case 'f':
1.4 mickey 253: if (strcmp(optarg, "inet") == 0)
1.1 deraadt 254: af = AF_INET;
1.7 kstailey 255: else if (strcmp(optarg, "local") == 0)
256: af = AF_LOCAL;
1.1 deraadt 257: else if (strcmp(optarg, "unix") == 0)
258: af = AF_UNIX;
1.4 mickey 259: else if (strcmp(optarg, "ipx") == 0)
260: af = AF_IPX;
261: else if (strcmp(optarg, "ns") == 0)
262: af = AF_NS;
1.1 deraadt 263: else if (strcmp(optarg, "iso") == 0)
264: af = AF_ISO;
1.10 ! angelos 265: else if (strcmp(optarg, "encap") == 0)
! 266: af = AF_ENCAP;
1.1 deraadt 267: else {
268: (void)fprintf(stderr,
269: "%s: %s: unknown address family\n",
1.2 deraadt 270: __progname, optarg);
1.1 deraadt 271: exit(1);
272: }
273: break;
274: case 'g':
275: gflag = 1;
276: break;
1.2 deraadt 277: case 'I':
1.1 deraadt 278: iflag = 1;
1.2 deraadt 279: interface = optarg;
1.1 deraadt 280: break;
281: case 'i':
282: iflag = 1;
283: break;
284: case 'M':
285: memf = optarg;
286: break;
287: case 'm':
288: mflag = 1;
289: break;
290: case 'N':
291: nlistf = optarg;
292: break;
293: case 'n':
294: nflag = 1;
295: break;
296: case 'p':
297: if ((tp = name2protox(optarg)) == NULL) {
298: (void)fprintf(stderr,
299: "%s: %s: unknown or uninstrumented protocol\n",
1.2 deraadt 300: __progname, optarg);
1.1 deraadt 301: exit(1);
302: }
303: pflag = 1;
304: break;
305: case 'r':
306: rflag = 1;
307: break;
308: case 's':
309: ++sflag;
310: break;
311: case 't':
312: tflag = 1;
313: break;
314: case 'u':
315: af = AF_UNIX;
316: break;
317: case 'w':
318: interval = atoi(optarg);
319: iflag = 1;
320: break;
321: case '?':
322: default:
323: usage();
324: }
325: argv += optind;
326: argc -= optind;
327:
328: #define BACKWARD_COMPATIBILITY
329: #ifdef BACKWARD_COMPATIBILITY
330: if (*argv) {
331: if (isdigit(**argv)) {
332: interval = atoi(*argv);
333: if (interval <= 0)
334: usage();
335: ++argv;
336: iflag = 1;
337: }
338: if (*argv) {
339: nlistf = *argv;
340: if (*++argv)
341: memf = *argv;
342: }
343: }
344: #endif
345:
346: /*
347: * Discard setgid privileges if not the running kernel so that bad
348: * guys can't print interesting stuff from kernel memory.
349: */
1.5 tholo 350: if (nlistf != NULL || memf != NULL) {
351: setegid(getgid());
1.1 deraadt 352: setgid(getgid());
1.5 tholo 353: }
1.1 deraadt 354:
1.2 deraadt 355: if ((kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY,
356: buf)) == NULL) {
357: fprintf(stderr, "%s: kvm_open: %s\n", __progname, buf);
1.1 deraadt 358: exit(1);
359: }
360: if (kvm_nlist(kvmd, nl) < 0 || nl[0].n_type == 0) {
361: if (nlistf)
1.2 deraadt 362: fprintf(stderr, "%s: %s: no namelist\n", __progname,
363: nlistf);
1.1 deraadt 364: else
1.2 deraadt 365: fprintf(stderr, "%s: no namelist\n", __progname);
1.1 deraadt 366: exit(1);
367: }
368: if (mflag) {
369: mbpr(nl[N_MBSTAT].n_value);
370: exit(0);
371: }
372: if (pflag) {
373: if (tp->pr_stats)
374: (*tp->pr_stats)(nl[tp->pr_sindex].n_value,
375: tp->pr_name);
376: else
377: printf("%s: no stats routine\n", tp->pr_name);
378: exit(0);
379: }
380: /*
381: * Keep file descriptors open to avoid overhead
382: * of open/close on each call to get* routines.
383: */
384: sethostent(1);
385: setnetent(1);
386: if (iflag) {
387: intpr(interval, nl[N_IFNET].n_value);
388: exit(0);
389: }
390: if (rflag) {
391: if (sflag)
392: rt_stats(nl[N_RTSTAT].n_value);
393: else
394: routepr(nl[N_RTREE].n_value);
395: exit(0);
396: }
397: if (gflag) {
398: if (sflag)
399: mrt_stats(nl[N_MRTPROTO].n_value,
400: nl[N_MRTSTAT].n_value);
401: else
402: mroutepr(nl[N_MRTPROTO].n_value,
403: nl[N_MFCHASHTBL].n_value,
404: nl[N_MFCHASH].n_value,
405: nl[N_VIFTABLE].n_value);
406: exit(0);
407: }
408: if (af == AF_INET || af == AF_UNSPEC) {
409: setprotoent(1);
410: setservent(1);
411: /* ugh, this is O(MN) ... why do we do this? */
412: while (p = getprotoent()) {
413: for (tp = protox; tp->pr_name; tp++)
414: if (strcmp(tp->pr_name, p->p_name) == 0)
415: break;
416: if (tp->pr_name == 0 || tp->pr_wanted == 0)
417: continue;
418: printproto(tp, p->p_name);
419: }
420: endprotoent();
421: }
1.4 mickey 422: if (af == AF_IPX || af == AF_UNSPEC)
423: for (tp = ipxprotox; tp->pr_name; tp++)
424: printproto(tp, tp->pr_name);
1.1 deraadt 425: if (af == AF_NS || af == AF_UNSPEC)
426: for (tp = nsprotox; tp->pr_name; tp++)
427: printproto(tp, tp->pr_name);
428: if (af == AF_ISO || af == AF_UNSPEC)
429: for (tp = isoprotox; tp->pr_name; tp++)
430: printproto(tp, tp->pr_name);
431: if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag)
432: unixpr(nl[N_UNIXSW].n_value);
433: exit(0);
434: }
435:
436: /*
437: * Print out protocol statistics or control blocks (per sflag).
438: * If the interface was not specifically requested, and the symbol
439: * is not in the namelist, ignore this one.
440: */
441: static void
442: printproto(tp, name)
443: register struct protox *tp;
444: char *name;
445: {
446: void (*pr)();
447: u_long off;
448:
449: if (sflag) {
450: pr = tp->pr_stats;
451: off = nl[tp->pr_sindex].n_value;
452: } else {
453: pr = tp->pr_cblocks;
454: off = nl[tp->pr_index].n_value;
455: }
456: if (pr != NULL && (off || af != AF_UNSPEC))
457: (*pr)(off, name);
458: }
459:
460: /*
461: * Read kernel memory, return 0 on success.
462: */
463: int
464: kread(addr, buf, size)
465: u_long addr;
466: char *buf;
467: int size;
468: {
469:
470: if (kvm_read(kvmd, addr, buf, size) != size) {
1.2 deraadt 471: (void)fprintf(stderr, "%s: %s\n", __progname,
1.1 deraadt 472: kvm_geterr(kvmd));
473: return (-1);
474: }
475: return (0);
476: }
477:
478: char *
479: plural(n)
480: int n;
481: {
482: return (n != 1 ? "s" : "");
483: }
484:
485: char *
486: plurales(n)
487: int n;
488: {
489: return (n != 1 ? "es" : "");
490: }
491:
492: /*
493: * Find the protox for the given "well-known" name.
494: */
495: static struct protox *
496: knownname(name)
497: char *name;
498: {
499: struct protox **tpp, *tp;
500:
501: for (tpp = protoprotox; *tpp; tpp++)
502: for (tp = *tpp; tp->pr_name; tp++)
503: if (strcmp(tp->pr_name, name) == 0)
504: return (tp);
505: return (NULL);
506: }
507:
508: /*
509: * Find the protox corresponding to name.
510: */
511: static struct protox *
512: name2protox(name)
513: char *name;
514: {
515: struct protox *tp;
516: char **alias; /* alias from p->aliases */
517: struct protoent *p;
518:
519: /*
520: * Try to find the name in the list of "well-known" names. If that
521: * fails, check if name is an alias for an Internet protocol.
522: */
523: if (tp = knownname(name))
524: return (tp);
525:
526: setprotoent(1); /* make protocol lookup cheaper */
527: while (p = getprotoent()) {
528: /* assert: name not same as p->name */
529: for (alias = p->p_aliases; *alias; alias++)
530: if (strcmp(name, *alias) == 0) {
531: endprotoent();
532: return (knownname(p->p_name));
533: }
534: }
535: endprotoent();
536: return (NULL);
537: }
538:
539: static void
540: usage()
541: {
542: (void)fprintf(stderr,
1.2 deraadt 543: "usage: %s [-Aan] [-f address_family] [-M core] [-N system]\n", __progname);
1.1 deraadt 544: (void)fprintf(stderr,
1.2 deraadt 545: " %s [-ghimnrs] [-f address_family] [-M core] [-N system]\n", __progname);
1.1 deraadt 546: (void)fprintf(stderr,
1.2 deraadt 547: " %s [-n] [-I interface] [-M core] [-N system] [-w wait]\n", __progname);
1.1 deraadt 548: (void)fprintf(stderr,
1.2 deraadt 549: " %s [-M core] [-N system] [-p protocol]\n", __progname);
1.1 deraadt 550: exit(1);
551: }