Annotation of src/usr.bin/netstat/main.c, Revision 1.117
1.117 ! remi 1: /* $OpenBSD: main.c,v 1.116 2019/04/28 17:59:51 mpi 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.
1.36 millert 16: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
32:
1.103 deraadt 33: #include <sys/types.h>
1.1 deraadt 34: #include <sys/protosw.h>
35: #include <sys/socket.h>
1.86 claudio 36: #include <sys/sysctl.h>
1.1 deraadt 37:
1.68 claudio 38: #include <net/route.h>
1.1 deraadt 39: #include <netinet/in.h>
40:
41: #include <ctype.h>
1.61 djm 42: #include <err.h>
1.1 deraadt 43: #include <errno.h>
1.96 guenther 44: #include <fcntl.h>
1.1 deraadt 45: #include <kvm.h>
46: #include <limits.h>
47: #include <netdb.h>
48: #include <nlist.h>
49: #include <paths.h>
50: #include <stdio.h>
51: #include <stdlib.h>
52: #include <string.h>
53: #include <unistd.h>
54: #include "netstat.h"
55:
56: struct nlist nl[] = {
1.116 mpi 57: #define N_AFMAP 0
58: { "_afmap"},
59: #define N_AF2IDX 1
60: { "_af2idx" },
61: #define N_AF2IDXMAX 2
62: { "_af2idx_max" },
1.71 deraadt 63:
1.87 bluhm 64: { "" }
1.1 deraadt 65: };
66:
67: struct protox {
1.87 bluhm 68: void (*pr_stats)(char *); /* statistics printing routine */
69: char *pr_name; /* well-known name */
1.106 claudio 70: int pr_proto; /* protocol number */
1.1 deraadt 71: } protox[] = {
1.106 claudio 72: { ip_stats, "ip", IPPROTO_IPV4 },
73: { icmp_stats, "icmp", 0 },
74: { igmp_stats, "igmp", 0 },
75: { ipip_stats, "ipencap", 0 },
76: { tcp_stats, "tcp", IPPROTO_TCP },
77: { udp_stats, "udp", IPPROTO_UDP },
1.113 mpi 78: { ipsec_stats, "ipsec", 0 },
1.106 claudio 79: { esp_stats, "esp", 0 },
80: { ah_stats, "ah", 0 },
81: { etherip_stats,"etherip", 0 },
82: { ipcomp_stats, "ipcomp", 0 },
83: { carp_stats, "carp", 0 },
84: { pfsync_stats, "pfsync", 0 },
85: { div_stats, "divert", IPPROTO_DIVERT },
86: { pflow_stats, "pflow", 0 },
87: { NULL, NULL, 0 }
1.1 deraadt 88: };
89:
1.19 itojun 90: struct protox ip6protox[] = {
1.106 claudio 91: { ip6_stats, "ip6", IPPROTO_IPV6 },
92: { div6_stats, "divert6", IPPROTO_DIVERT },
93: { icmp6_stats, "icmp6", 0 },
94: { rip6_stats, "rip6", 0 },
95: { NULL, NULL, 0 }
1.19 itojun 96: };
97:
1.34 deraadt 98: struct protox *protoprotox[] = {
1.89 henning 99: protox, ip6protox, NULL
1.34 deraadt 100: };
1.1 deraadt 101:
1.30 millert 102: static void usage(void);
103: static struct protox *name2protox(char *);
104: static struct protox *knownname(char *);
1.116 mpi 105: void gettable(u_int);
1.86 claudio 106:
1.1 deraadt 107: kvm_t *kvmd;
108:
109: int
1.34 deraadt 110: main(int argc, char *argv[])
1.1 deraadt 111: {
112: extern char *optarg;
113: extern int optind;
1.68 claudio 114: const char *errstr;
1.28 mpech 115: struct protox *tp = NULL; /* for printing cblocks & stats */
1.1 deraadt 116: int ch;
1.59 markus 117: char *nlistf = NULL, *memf = NULL, *ep;
1.1 deraadt 118: char buf[_POSIX2_LINE_MAX];
1.59 markus 119: u_long pcbaddr = 0;
1.91 mikeb 120: u_int tableid;
1.86 claudio 121: int Tflag = 0;
1.82 tedu 122: int repeatcount = 0;
1.106 claudio 123: int proto = 0;
1.109 mpi 124: int need_nlist, kvm_flags = O_RDONLY;
1.95 deraadt 125:
1.1 deraadt 126: af = AF_UNSPEC;
1.91 mikeb 127: tableid = getrtable();
1.1 deraadt 128:
1.88 jsing 129: while ((ch = getopt(argc, argv,
1.117 ! remi 130: "AaBbc:deFf:ghI:iLlM:mN:np:P:qRrsT:tuvW:w:")) != -1)
1.31 deraadt 131: switch (ch) {
1.1 deraadt 132: case 'A':
133: Aflag = 1;
134: break;
135: case 'a':
136: aflag = 1;
1.24 camield 137: break;
1.88 jsing 138: case 'B':
139: Bflag = 1;
140: break;
1.24 camield 141: case 'b':
142: bflag = 1;
1.1 deraadt 143: break;
1.82 tedu 144: case 'c':
145: repeatcount = strtonum(optarg, 1, INT_MAX, &errstr);
1.100 tedu 146: if (errstr)
147: errx(1, "count is %s", errstr);
1.82 tedu 148: break;
1.1 deraadt 149: case 'd':
1.114 dlg 150: dflag = IF_SHOW_DROP;
151: break;
152: case 'e':
153: dflag = IF_SHOW_ERRS;
1.64 pyr 154: break;
155: case 'F':
156: Fflag = 1;
1.1 deraadt 157: break;
158: case 'f':
1.4 mickey 159: if (strcmp(optarg, "inet") == 0)
1.1 deraadt 160: af = AF_INET;
1.19 itojun 161: else if (strcmp(optarg, "inet6") == 0)
162: af = AF_INET6;
1.7 kstailey 163: else if (strcmp(optarg, "local") == 0)
164: af = AF_LOCAL;
1.1 deraadt 165: else if (strcmp(optarg, "unix") == 0)
166: af = AF_UNIX;
1.75 claudio 167: else if (strcmp(optarg, "mpls") == 0)
168: af = AF_MPLS;
1.1 deraadt 169: else {
170: (void)fprintf(stderr,
171: "%s: %s: unknown address family\n",
1.2 deraadt 172: __progname, optarg);
1.1 deraadt 173: exit(1);
174: }
175: break;
176: case 'g':
177: gflag = 1;
1.93 tedu 178: break;
179: case 'h':
180: hflag = 1;
1.1 deraadt 181: break;
1.2 deraadt 182: case 'I':
1.1 deraadt 183: iflag = 1;
1.2 deraadt 184: interface = optarg;
1.1 deraadt 185: break;
186: case 'i':
187: iflag = 1;
188: break;
1.19 itojun 189: case 'l':
190: lflag = 1;
191: break;
1.1 deraadt 192: case 'M':
193: memf = optarg;
194: break;
195: case 'm':
196: mflag = 1;
197: break;
198: case 'N':
199: nlistf = optarg;
200: break;
201: case 'n':
202: nflag = 1;
203: break;
204: case 'p':
205: if ((tp = name2protox(optarg)) == NULL) {
206: (void)fprintf(stderr,
1.42 jmc 207: "%s: %s: unknown protocol\n",
1.2 deraadt 208: __progname, optarg);
1.1 deraadt 209: exit(1);
210: }
211: pflag = 1;
1.27 brian 212: break;
1.59 markus 213: case 'P':
214: errno = 0;
215: pcbaddr = strtoul(optarg, &ep, 16);
216: if (optarg[0] == '\0' || *ep != '\0' ||
217: errno == ERANGE) {
218: (void)fprintf(stderr,
219: "%s: %s: invalid PCB address\n",
220: __progname, optarg);
221: exit(1);
222: }
223: Pflag = 1;
224: break;
1.27 brian 225: case 'q':
226: qflag = 1;
1.1 deraadt 227: break;
1.117 ! remi 228: case 'R':
! 229: Rflag = 1;
! 230: break;
1.1 deraadt 231: case 'r':
232: rflag = 1;
1.46 cedric 233: break;
1.1 deraadt 234: case 's':
235: ++sflag;
236: break;
1.68 claudio 237: case 'T':
1.116 mpi 238: tableid = strtonum(optarg, 0, RT_TABLEID_MAX, &errstr);
239: if (errstr)
240: errx(1, "invalid table id: %s", errstr);
1.86 claudio 241: Tflag = 1;
1.68 claudio 242: break;
1.1 deraadt 243: case 't':
244: tflag = 1;
245: break;
246: case 'u':
247: af = AF_UNIX;
1.13 peter 248: break;
249: case 'v':
250: vflag = 1;
1.1 deraadt 251: break;
1.56 reyk 252: case 'W':
253: Wflag = 1;
254: interface = optarg;
255: break;
1.1 deraadt 256: case 'w':
1.100 tedu 257: interval = strtonum(optarg, 1, INT_MAX, &errstr);
258: if (errstr)
259: errx(1, "interval is %s", errstr);
1.1 deraadt 260: iflag = 1;
261: break;
262: case '?':
263: default:
264: usage();
265: }
266: argv += optind;
267: argc -= optind;
268:
1.108 tedu 269: if (argc) {
270: interval = strtonum(*argv, 1, INT_MAX, &errstr);
271: if (errstr)
272: errx(1, "interval is %s", errstr);
273: ++argv;
274: --argc;
275: iflag = 1;
1.84 lum 276: }
1.107 tedu 277: if (argc)
278: usage();
1.84 lum 279:
1.56 reyk 280: /*
1.106 claudio 281: * Show per-interface statistics which don't need access to
282: * kernel memory (they're using IOCTLs)
1.33 deraadt 283: */
1.106 claudio 284: if (Wflag) {
285: if (interface == NULL)
286: usage();
287: net80211_ifstats(interface);
288: exit(0);
1.33 deraadt 289: }
1.61 djm 290:
1.1 deraadt 291: if (mflag) {
1.70 deraadt 292: mbpr();
1.1 deraadt 293: exit(0);
294: }
295: if (iflag) {
1.82 tedu 296: intpr(interval, repeatcount);
1.1 deraadt 297: exit(0);
298: }
1.106 claudio 299: if (sflag) {
300: if (rflag) {
1.73 claudio 301: rt_stats();
1.106 claudio 302: } else if (gflag) {
1.19 itojun 303: if (af == AF_INET || af == AF_UNSPEC)
1.71 deraadt 304: mrt_stats();
1.19 itojun 305: if (af == AF_INET6 || af == AF_UNSPEC)
1.71 deraadt 306: mrt6_stats();
1.106 claudio 307: } else if (pflag && tp->pr_name) {
308: (*tp->pr_stats)(tp->pr_name);
1.70 deraadt 309: } else {
1.19 itojun 310: if (af == AF_INET || af == AF_UNSPEC)
1.106 claudio 311: for (tp = protox; tp->pr_name; tp++)
312: (*tp->pr_stats)(tp->pr_name);
1.19 itojun 313: if (af == AF_INET6 || af == AF_UNSPEC)
1.106 claudio 314: for (tp = ip6protox; tp->pr_name; tp++)
315: (*tp->pr_stats)(tp->pr_name);
1.19 itojun 316: }
1.1 deraadt 317: exit(0);
318: }
1.106 claudio 319: if (gflag) {
320: if (af == AF_INET || af == AF_UNSPEC)
321: mroutepr();
322: if (af == AF_INET6 || af == AF_UNSPEC)
323: mroute6pr();
1.117 ! remi 324: exit(0);
! 325: }
! 326:
! 327: if (Rflag) {
! 328: rdomainpr();
1.106 claudio 329: exit(0);
330: }
331:
332: /*
333: * The remaining code may need kvm so lets try to open it.
334: * -r and -P are the only bits left that actually can use this.
335: */
1.109 mpi 336: need_nlist = (nlistf != NULL) || (memf != NULL) || (Aflag && rflag);
337: if (!need_nlist && !Pflag)
338: kvm_flags |= KVM_NO_FILES;
1.106 claudio 339:
1.109 mpi 340: if ((kvmd = kvm_openfiles(nlistf, memf, NULL, kvm_flags, buf)) == NULL)
1.106 claudio 341: errx(1, "kvm_openfiles: %s", buf);
342:
343: if (need_nlist && (kvm_nlist(kvmd, nl) < 0 || nl[0].n_type == 0)) {
344: if (nlistf)
345: errx(1, "%s: no namelist", nlistf);
346: else
347: errx(1, "no namelist");
1.76 gollo 348: }
1.106 claudio 349:
1.116 mpi 350: if (!need_nlist && Tflag)
351: gettable(tableid);
352:
1.106 claudio 353: if (rflag) {
354: if (Aflag || nlistf != NULL || memf != NULL)
1.116 mpi 355: routepr(nl[N_AFMAP].n_value, nl[N_AF2IDX].n_value,
356: nl[N_AF2IDXMAX].n_value, tableid);
1.106 claudio 357: else
358: p_rttables(af, tableid);
359: exit(0);
1.1 deraadt 360: }
361:
1.106 claudio 362: if (pflag) {
363: if (tp->pr_proto == 0)
364: errx(1, "no protocol handler for protocol %s",
365: tp->pr_name);
366: else
367: proto = tp->pr_proto;
1.1 deraadt 368: }
1.106 claudio 369:
370: protopr(kvmd, pcbaddr, tableid, proto);
371: exit(0);
1.1 deraadt 372: }
373:
374: /*
375: * Read kernel memory, return 0 on success.
376: */
377: int
1.53 jaredy 378: kread(u_long addr, void *buf, int size)
1.1 deraadt 379: {
380:
381: if (kvm_read(kvmd, addr, buf, size) != size) {
1.2 deraadt 382: (void)fprintf(stderr, "%s: %s\n", __progname,
1.1 deraadt 383: kvm_geterr(kvmd));
384: return (-1);
385: }
386: return (0);
387: }
388:
389: char *
1.77 claudio 390: plural(u_int64_t n)
1.1 deraadt 391: {
392: return (n != 1 ? "s" : "");
393: }
394:
395: char *
1.77 claudio 396: plurales(u_int64_t n)
1.1 deraadt 397: {
398: return (n != 1 ? "es" : "");
1.110 bluhm 399: }
400:
401: char *
402: pluralys(u_int64_t n)
403: {
404: return (n != 1 ? "ies" : "y");
1.1 deraadt 405: }
406:
407: /*
408: * Find the protox for the given "well-known" name.
409: */
410: static struct protox *
1.34 deraadt 411: knownname(char *name)
1.1 deraadt 412: {
413: struct protox **tpp, *tp;
414:
415: for (tpp = protoprotox; *tpp; tpp++)
416: for (tp = *tpp; tp->pr_name; tp++)
417: if (strcmp(tp->pr_name, name) == 0)
418: return (tp);
419: return (NULL);
420: }
421:
422: /*
423: * Find the protox corresponding to name.
424: */
425: static struct protox *
1.34 deraadt 426: name2protox(char *name)
1.1 deraadt 427: {
428: struct protox *tp;
429: char **alias; /* alias from p->aliases */
430: struct protoent *p;
431:
432: /*
433: * Try to find the name in the list of "well-known" names. If that
434: * fails, check if name is an alias for an Internet protocol.
435: */
1.11 millert 436: if ((tp = knownname(name)))
1.1 deraadt 437: return (tp);
438:
439: setprotoent(1); /* make protocol lookup cheaper */
1.11 millert 440: while ((p = getprotoent())) {
1.1 deraadt 441: /* assert: name not same as p->name */
442: for (alias = p->p_aliases; *alias; alias++)
443: if (strcmp(name, *alias) == 0) {
444: endprotoent();
445: return (knownname(p->p_name));
446: }
447: }
448: endprotoent();
449: return (NULL);
450: }
451:
452: static void
1.34 deraadt 453: usage(void)
1.1 deraadt 454: {
455: (void)fprintf(stderr,
1.112 benno 456: "usage: %s [-AaBln] [-f address_family] [-M core] [-N system]\n"
1.115 jmc 457: " %s [-bdeFgilmnqrstu] [-f address_family] [-M core] [-N system]\n"
458: " [-T rtable]\n"
459: " %s [-bdehn] [-c count] [-I interface] [-M core] [-N system] [-w wait]\n"
1.87 bluhm 460: " %s [-v] [-M core] [-N system] -P pcbaddr\n"
1.60 jaredy 461: " %s [-s] [-M core] [-N system] [-p protocol]\n"
462: " %s [-a] [-f address_family] [-i | -I interface]\n"
463: " %s [-W interface]\n",
464: __progname, __progname, __progname, __progname,
465: __progname, __progname, __progname);
1.1 deraadt 466: exit(1);
467: }
1.86 claudio 468:
1.116 mpi 469: void
470: gettable(u_int tableid)
1.86 claudio 471: {
472: struct rt_tableinfo info;
473: int mib[6];
474: size_t len;
475:
476: mib[0] = CTL_NET;
1.101 guenther 477: mib[1] = PF_ROUTE;
1.86 claudio 478: mib[2] = 0;
479: mib[3] = 0;
480: mib[4] = NET_RT_TABLE;
481: mib[5] = tableid;
482:
483: len = sizeof(info);
484: if (sysctl(mib, 6, &info, &len, NULL, 0) == -1)
1.97 deraadt 485: err(1, "routing table %d", tableid);
1.86 claudio 486: }
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