![[BACK]](/icons/back.gif){kind=icon}
Return to main.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / netstat|
Return to main.c CVS log | Up to [local] / src / usr.bin / netstat |
1.17 ! d 1: /* $OpenBSD: main.c,v 1.16 1999/02/24 22:57:34 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
1.17 ! d 47: static char *rcsid = "$OpenBSD: main.c,v 1.16 1999/02/24 22:57:34 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"},
1.12 denny 150: #define N_DDPSTAT 39
151: { "_ddpstat"},
152: #define N_DDPCB 40
153: { "_ddpcb"},
1.11 millert 154: { ""},
1.1 deraadt 155: };
156:
157: struct protox {
158: u_char pr_index; /* index into nlist of cb head */
159: u_char pr_sindex; /* index into nlist of stat block */
160: u_char pr_wanted; /* 1 if wanted, 0 otherwise */
161: void (*pr_cblocks)(); /* control blocks printing routine */
162: void (*pr_stats)(); /* statistics printing routine */
163: char *pr_name; /* well-known name */
164: } protox[] = {
165: { N_TCBTABLE, N_TCPSTAT, 1, protopr,
166: tcp_stats, "tcp" },
167: { N_UDBTABLE, N_UDPSTAT, 1, protopr,
168: udp_stats, "udp" },
169: { -1, N_IPSTAT, 1, 0,
170: ip_stats, "ip" },
171: { -1, N_ICMPSTAT, 1, 0,
172: icmp_stats, "icmp" },
173: { -1, N_IGMPSTAT, 1, 0,
174: igmp_stats, "igmp" },
1.8 angelos 175: { -1, N_AHSTAT, 1, 0,
1.15 angelos 176: ah_stats, "ah" },
1.8 angelos 177: { -1, N_ESPSTAT, 1, 0,
1.15 angelos 178: esp_stats, "esp" },
1.8 angelos 179: { -1, N_IP4STAT, 1, 0,
1.9 angelos 180: ip4_stats, "ipencap" },
1.1 deraadt 181: { -1, -1, 0, 0,
182: 0, 0 }
183: };
184:
1.4 mickey 185: struct protox ipxprotox[] = {
186: { N_IPX, N_IPXSTAT, 1, ipxprotopr,
187: ipx_stats, "ipx" },
188: { N_IPX, N_SPXSTAT, 1, ipxprotopr,
189: spx_stats, "spx" },
190: { -1, N_IPXERR, 1, 0,
191: ipxerr_stats, "ipx_err" },
192: { -1, -1, 0, 0,
193: 0, 0 }
194: };
195:
1.1 deraadt 196: struct protox nsprotox[] = {
197: { N_IDP, N_IDPSTAT, 1, nsprotopr,
198: idp_stats, "idp" },
199: { N_IDP, N_SPPSTAT, 1, nsprotopr,
200: spp_stats, "spp" },
201: { -1, N_NSERR, 1, 0,
202: nserr_stats, "ns_err" },
203: { -1, -1, 0, 0,
204: 0, 0 }
205: };
206:
207: struct protox isoprotox[] = {
208: { ISO_TP, N_TPSTAT, 1, iso_protopr,
209: tp_stats, "tp" },
210: { N_CLTP, N_CLTPSTAT, 1, iso_protopr,
211: cltp_stats, "cltp" },
212: { -1, N_CLNPSTAT, 1, 0,
213: clnp_stats, "clnp"},
214: { -1, N_ESISSTAT, 1, 0,
215: esis_stats, "esis"},
216: { -1, -1, 0, 0,
217: 0, 0 }
218: };
219:
1.12 denny 220: struct protox atalkprotox[] = {
221: { N_DDPCB, N_DDPSTAT, 1, atalkprotopr,
222: ddp_stats, "ddp" },
223: { -1, -1, 0, 0,
224: 0, 0 }
225: };
226:
227: struct protox *protoprotox[] = { protox, ipxprotox, nsprotox, isoprotox, atalkprotox, NULL };
1.1 deraadt 228:
229: static void printproto __P((struct protox *, char *));
230: static void usage __P((void));
231: static struct protox *name2protox __P((char *));
232: static struct protox *knownname __P((char *));
233:
234: kvm_t *kvmd;
235:
236: int
237: main(argc, argv)
238: int argc;
239: char *argv[];
240: {
241: extern char *optarg;
242: extern int optind;
243: register struct protoent *p;
244: register struct protox *tp; /* for printing cblocks & stats */
245: int ch;
246: char *nlistf = NULL, *memf = NULL;
247: char buf[_POSIX2_LINE_MAX];
248:
249: af = AF_UNSPEC;
250:
1.17 ! d 251: while ((ch = getopt(argc, argv, "Aadf:gI:iM:mN:np:rstuvw:")) != -1)
1.1 deraadt 252: switch(ch) {
253: case 'A':
254: Aflag = 1;
255: break;
256: case 'a':
257: aflag = 1;
258: break;
259: case 'd':
260: dflag = 1;
261: break;
262: case 'f':
1.4 mickey 263: if (strcmp(optarg, "inet") == 0)
1.1 deraadt 264: af = AF_INET;
1.7 kstailey 265: else if (strcmp(optarg, "local") == 0)
266: af = AF_LOCAL;
1.1 deraadt 267: else if (strcmp(optarg, "unix") == 0)
268: af = AF_UNIX;
1.4 mickey 269: else if (strcmp(optarg, "ipx") == 0)
270: af = AF_IPX;
271: else if (strcmp(optarg, "ns") == 0)
272: af = AF_NS;
1.1 deraadt 273: else if (strcmp(optarg, "iso") == 0)
274: af = AF_ISO;
1.10 angelos 275: else if (strcmp(optarg, "encap") == 0)
1.16 angelos 276: af = PF_KEY;
1.12 denny 277: else if (strcmp(optarg, "atalk") == 0)
278: af = AF_APPLETALK;
1.1 deraadt 279: else {
280: (void)fprintf(stderr,
281: "%s: %s: unknown address family\n",
1.2 deraadt 282: __progname, optarg);
1.1 deraadt 283: exit(1);
284: }
285: break;
286: case 'g':
287: gflag = 1;
288: break;
1.2 deraadt 289: case 'I':
1.1 deraadt 290: iflag = 1;
1.2 deraadt 291: interface = optarg;
1.1 deraadt 292: break;
293: case 'i':
294: iflag = 1;
295: break;
296: case 'M':
297: memf = optarg;
298: break;
299: case 'm':
300: mflag = 1;
301: break;
302: case 'N':
303: nlistf = optarg;
304: break;
305: case 'n':
306: nflag = 1;
307: break;
308: case 'p':
309: if ((tp = name2protox(optarg)) == NULL) {
310: (void)fprintf(stderr,
311: "%s: %s: unknown or uninstrumented protocol\n",
1.2 deraadt 312: __progname, optarg);
1.1 deraadt 313: exit(1);
314: }
315: pflag = 1;
316: break;
317: case 'r':
318: rflag = 1;
319: break;
320: case 's':
321: ++sflag;
322: break;
323: case 't':
324: tflag = 1;
325: break;
326: case 'u':
327: af = AF_UNIX;
1.13 peter 328: break;
329: case 'v':
330: vflag = 1;
1.1 deraadt 331: break;
332: case 'w':
333: interval = atoi(optarg);
334: iflag = 1;
335: break;
336: case '?':
337: default:
338: usage();
339: }
340: argv += optind;
341: argc -= optind;
342:
343: #define BACKWARD_COMPATIBILITY
344: #ifdef BACKWARD_COMPATIBILITY
345: if (*argv) {
346: if (isdigit(**argv)) {
347: interval = atoi(*argv);
348: if (interval <= 0)
349: usage();
350: ++argv;
351: iflag = 1;
352: }
353: if (*argv) {
354: nlistf = *argv;
355: if (*++argv)
356: memf = *argv;
357: }
358: }
359: #endif
360:
361: /*
362: * Discard setgid privileges if not the running kernel so that bad
363: * guys can't print interesting stuff from kernel memory.
364: */
1.5 tholo 365: if (nlistf != NULL || memf != NULL) {
366: setegid(getgid());
1.1 deraadt 367: setgid(getgid());
1.5 tholo 368: }
1.1 deraadt 369:
1.2 deraadt 370: if ((kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY,
371: buf)) == NULL) {
372: fprintf(stderr, "%s: kvm_open: %s\n", __progname, buf);
1.1 deraadt 373: exit(1);
374: }
1.14 deraadt 375: setegid(getgid());
376: setgid(getgid());
377:
1.1 deraadt 378: if (kvm_nlist(kvmd, nl) < 0 || nl[0].n_type == 0) {
379: if (nlistf)
1.2 deraadt 380: fprintf(stderr, "%s: %s: no namelist\n", __progname,
381: nlistf);
1.1 deraadt 382: else
1.2 deraadt 383: fprintf(stderr, "%s: no namelist\n", __progname);
1.1 deraadt 384: exit(1);
385: }
386: if (mflag) {
387: mbpr(nl[N_MBSTAT].n_value);
388: exit(0);
389: }
390: if (pflag) {
391: if (tp->pr_stats)
392: (*tp->pr_stats)(nl[tp->pr_sindex].n_value,
393: tp->pr_name);
394: else
395: printf("%s: no stats routine\n", tp->pr_name);
396: exit(0);
397: }
398: /*
399: * Keep file descriptors open to avoid overhead
400: * of open/close on each call to get* routines.
401: */
402: sethostent(1);
403: setnetent(1);
404: if (iflag) {
405: intpr(interval, nl[N_IFNET].n_value);
406: exit(0);
407: }
408: if (rflag) {
409: if (sflag)
410: rt_stats(nl[N_RTSTAT].n_value);
411: else
412: routepr(nl[N_RTREE].n_value);
413: exit(0);
414: }
415: if (gflag) {
416: if (sflag)
417: mrt_stats(nl[N_MRTPROTO].n_value,
418: nl[N_MRTSTAT].n_value);
419: else
420: mroutepr(nl[N_MRTPROTO].n_value,
421: nl[N_MFCHASHTBL].n_value,
422: nl[N_MFCHASH].n_value,
423: nl[N_VIFTABLE].n_value);
424: exit(0);
425: }
426: if (af == AF_INET || af == AF_UNSPEC) {
427: setprotoent(1);
428: setservent(1);
429: /* ugh, this is O(MN) ... why do we do this? */
1.11 millert 430: while ((p = getprotoent())) {
1.1 deraadt 431: for (tp = protox; tp->pr_name; tp++)
432: if (strcmp(tp->pr_name, p->p_name) == 0)
433: break;
434: if (tp->pr_name == 0 || tp->pr_wanted == 0)
435: continue;
436: printproto(tp, p->p_name);
437: }
438: endprotoent();
439: }
1.4 mickey 440: if (af == AF_IPX || af == AF_UNSPEC)
441: for (tp = ipxprotox; tp->pr_name; tp++)
442: printproto(tp, tp->pr_name);
1.1 deraadt 443: if (af == AF_NS || af == AF_UNSPEC)
444: for (tp = nsprotox; tp->pr_name; tp++)
445: printproto(tp, tp->pr_name);
446: if (af == AF_ISO || af == AF_UNSPEC)
447: for (tp = isoprotox; tp->pr_name; tp++)
448: printproto(tp, tp->pr_name);
449: if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag)
450: unixpr(nl[N_UNIXSW].n_value);
1.12 denny 451: if (af == AF_APPLETALK || af == AF_UNSPEC)
452: for (tp = atalkprotox; tp->pr_name; tp++)
453: printproto(tp, tp->pr_name);
1.1 deraadt 454: exit(0);
455: }
456:
457: /*
458: * Print out protocol statistics or control blocks (per sflag).
459: * If the interface was not specifically requested, and the symbol
460: * is not in the namelist, ignore this one.
461: */
462: static void
463: printproto(tp, name)
464: register struct protox *tp;
465: char *name;
466: {
467: void (*pr)();
468: u_long off;
469:
470: if (sflag) {
471: pr = tp->pr_stats;
472: off = nl[tp->pr_sindex].n_value;
473: } else {
474: pr = tp->pr_cblocks;
475: off = nl[tp->pr_index].n_value;
476: }
477: if (pr != NULL && (off || af != AF_UNSPEC))
478: (*pr)(off, name);
479: }
480:
481: /*
482: * Read kernel memory, return 0 on success.
483: */
484: int
485: kread(addr, buf, size)
486: u_long addr;
487: char *buf;
488: int size;
489: {
490:
491: if (kvm_read(kvmd, addr, buf, size) != size) {
1.2 deraadt 492: (void)fprintf(stderr, "%s: %s\n", __progname,
1.1 deraadt 493: kvm_geterr(kvmd));
494: return (-1);
495: }
496: return (0);
497: }
498:
499: char *
500: plural(n)
501: int n;
502: {
503: return (n != 1 ? "s" : "");
504: }
505:
506: char *
507: plurales(n)
508: int n;
509: {
510: return (n != 1 ? "es" : "");
511: }
512:
513: /*
514: * Find the protox for the given "well-known" name.
515: */
516: static struct protox *
517: knownname(name)
518: char *name;
519: {
520: struct protox **tpp, *tp;
521:
522: for (tpp = protoprotox; *tpp; tpp++)
523: for (tp = *tpp; tp->pr_name; tp++)
524: if (strcmp(tp->pr_name, name) == 0)
525: return (tp);
526: return (NULL);
527: }
528:
529: /*
530: * Find the protox corresponding to name.
531: */
532: static struct protox *
533: name2protox(name)
534: char *name;
535: {
536: struct protox *tp;
537: char **alias; /* alias from p->aliases */
538: struct protoent *p;
539:
540: /*
541: * Try to find the name in the list of "well-known" names. If that
542: * fails, check if name is an alias for an Internet protocol.
543: */
1.11 millert 544: if ((tp = knownname(name)))
1.1 deraadt 545: return (tp);
546:
547: setprotoent(1); /* make protocol lookup cheaper */
1.11 millert 548: while ((p = getprotoent())) {
1.1 deraadt 549: /* assert: name not same as p->name */
550: for (alias = p->p_aliases; *alias; alias++)
551: if (strcmp(name, *alias) == 0) {
552: endprotoent();
553: return (knownname(p->p_name));
554: }
555: }
556: endprotoent();
557: return (NULL);
558: }
559:
560: static void
561: usage()
562: {
563: (void)fprintf(stderr,
1.2 deraadt 564: "usage: %s [-Aan] [-f address_family] [-M core] [-N system]\n", __progname);
1.1 deraadt 565: (void)fprintf(stderr,
1.17 ! d 566: " %s [-gimnrs] [-f address_family] [-M core] [-N system]\n", __progname);
1.1 deraadt 567: (void)fprintf(stderr,
1.2 deraadt 568: " %s [-n] [-I interface] [-M core] [-N system] [-w wait]\n", __progname);
1.1 deraadt 569: (void)fprintf(stderr,
1.2 deraadt 570: " %s [-M core] [-N system] [-p protocol]\n", __progname);
1.1 deraadt 571: exit(1);
572: }