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1.1 ! deraadt 1: /* $NetBSD: main.c,v 1.8 1995/10/03 21:42:40 thorpej Exp $ */
! 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
! 46: static char *rcsid = "$NetBSD: main.c,v 1.8 1995/10/03 21:42:40 thorpej Exp $";
! 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: if (cp = rindex(argv[0], '/'))
! 208: prog = cp + 1;
! 209: else
! 210: prog = argv[0];
! 211: af = AF_UNSPEC;
! 212:
! 213: while ((ch = getopt(argc, argv, "Aadf:ghI:iM:mN:np:rstuw:")) != EOF)
! 214: switch(ch) {
! 215: case 'A':
! 216: Aflag = 1;
! 217: break;
! 218: case 'a':
! 219: aflag = 1;
! 220: break;
! 221: case 'd':
! 222: dflag = 1;
! 223: break;
! 224: case 'f':
! 225: if (strcmp(optarg, "ns") == 0)
! 226: af = AF_NS;
! 227: else if (strcmp(optarg, "inet") == 0)
! 228: af = AF_INET;
! 229: else if (strcmp(optarg, "unix") == 0)
! 230: af = AF_UNIX;
! 231: else if (strcmp(optarg, "iso") == 0)
! 232: af = AF_ISO;
! 233: else {
! 234: (void)fprintf(stderr,
! 235: "%s: %s: unknown address family\n",
! 236: prog, optarg);
! 237: exit(1);
! 238: }
! 239: break;
! 240: case 'g':
! 241: gflag = 1;
! 242: break;
! 243: case 'I': {
! 244: char *cp;
! 245:
! 246: iflag = 1;
! 247: for (cp = interface = optarg; isalpha(*cp); cp++)
! 248: continue;
! 249: unit = atoi(cp);
! 250: *cp = '\0';
! 251: break;
! 252: }
! 253: case 'i':
! 254: iflag = 1;
! 255: break;
! 256: case 'M':
! 257: memf = optarg;
! 258: break;
! 259: case 'm':
! 260: mflag = 1;
! 261: break;
! 262: case 'N':
! 263: nlistf = optarg;
! 264: break;
! 265: case 'n':
! 266: nflag = 1;
! 267: break;
! 268: case 'p':
! 269: if ((tp = name2protox(optarg)) == NULL) {
! 270: (void)fprintf(stderr,
! 271: "%s: %s: unknown or uninstrumented protocol\n",
! 272: prog, optarg);
! 273: exit(1);
! 274: }
! 275: pflag = 1;
! 276: break;
! 277: case 'r':
! 278: rflag = 1;
! 279: break;
! 280: case 's':
! 281: ++sflag;
! 282: break;
! 283: case 't':
! 284: tflag = 1;
! 285: break;
! 286: case 'u':
! 287: af = AF_UNIX;
! 288: break;
! 289: case 'w':
! 290: interval = atoi(optarg);
! 291: iflag = 1;
! 292: break;
! 293: case '?':
! 294: default:
! 295: usage();
! 296: }
! 297: argv += optind;
! 298: argc -= optind;
! 299:
! 300: #define BACKWARD_COMPATIBILITY
! 301: #ifdef BACKWARD_COMPATIBILITY
! 302: if (*argv) {
! 303: if (isdigit(**argv)) {
! 304: interval = atoi(*argv);
! 305: if (interval <= 0)
! 306: usage();
! 307: ++argv;
! 308: iflag = 1;
! 309: }
! 310: if (*argv) {
! 311: nlistf = *argv;
! 312: if (*++argv)
! 313: memf = *argv;
! 314: }
! 315: }
! 316: #endif
! 317:
! 318: /*
! 319: * Discard setgid privileges if not the running kernel so that bad
! 320: * guys can't print interesting stuff from kernel memory.
! 321: */
! 322: if (nlistf != NULL || memf != NULL)
! 323: setgid(getgid());
! 324:
! 325: if ((kvmd = kvm_open(nlistf, memf, NULL, O_RDONLY, prog)) == NULL) {
! 326: fprintf(stderr, "%s: kvm_open: %s\n", prog, buf);
! 327: exit(1);
! 328: }
! 329: if (kvm_nlist(kvmd, nl) < 0 || nl[0].n_type == 0) {
! 330: if (nlistf)
! 331: fprintf(stderr, "%s: %s: no namelist\n", prog, nlistf);
! 332: else
! 333: fprintf(stderr, "%s: no namelist\n", prog);
! 334: exit(1);
! 335: }
! 336: if (mflag) {
! 337: mbpr(nl[N_MBSTAT].n_value);
! 338: exit(0);
! 339: }
! 340: if (pflag) {
! 341: if (tp->pr_stats)
! 342: (*tp->pr_stats)(nl[tp->pr_sindex].n_value,
! 343: tp->pr_name);
! 344: else
! 345: printf("%s: no stats routine\n", tp->pr_name);
! 346: exit(0);
! 347: }
! 348: /*
! 349: * Keep file descriptors open to avoid overhead
! 350: * of open/close on each call to get* routines.
! 351: */
! 352: sethostent(1);
! 353: setnetent(1);
! 354: if (iflag) {
! 355: intpr(interval, nl[N_IFNET].n_value);
! 356: exit(0);
! 357: }
! 358: if (rflag) {
! 359: if (sflag)
! 360: rt_stats(nl[N_RTSTAT].n_value);
! 361: else
! 362: routepr(nl[N_RTREE].n_value);
! 363: exit(0);
! 364: }
! 365: if (gflag) {
! 366: if (sflag)
! 367: mrt_stats(nl[N_MRTPROTO].n_value,
! 368: nl[N_MRTSTAT].n_value);
! 369: else
! 370: mroutepr(nl[N_MRTPROTO].n_value,
! 371: nl[N_MFCHASHTBL].n_value,
! 372: nl[N_MFCHASH].n_value,
! 373: nl[N_VIFTABLE].n_value);
! 374: exit(0);
! 375: }
! 376: if (af == AF_INET || af == AF_UNSPEC) {
! 377: setprotoent(1);
! 378: setservent(1);
! 379: /* ugh, this is O(MN) ... why do we do this? */
! 380: while (p = getprotoent()) {
! 381: for (tp = protox; tp->pr_name; tp++)
! 382: if (strcmp(tp->pr_name, p->p_name) == 0)
! 383: break;
! 384: if (tp->pr_name == 0 || tp->pr_wanted == 0)
! 385: continue;
! 386: printproto(tp, p->p_name);
! 387: }
! 388: endprotoent();
! 389: }
! 390: if (af == AF_NS || af == AF_UNSPEC)
! 391: for (tp = nsprotox; tp->pr_name; tp++)
! 392: printproto(tp, tp->pr_name);
! 393: if (af == AF_ISO || af == AF_UNSPEC)
! 394: for (tp = isoprotox; tp->pr_name; tp++)
! 395: printproto(tp, tp->pr_name);
! 396: if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag)
! 397: unixpr(nl[N_UNIXSW].n_value);
! 398: exit(0);
! 399: }
! 400:
! 401: /*
! 402: * Print out protocol statistics or control blocks (per sflag).
! 403: * If the interface was not specifically requested, and the symbol
! 404: * is not in the namelist, ignore this one.
! 405: */
! 406: static void
! 407: printproto(tp, name)
! 408: register struct protox *tp;
! 409: char *name;
! 410: {
! 411: void (*pr)();
! 412: u_long off;
! 413:
! 414: if (sflag) {
! 415: pr = tp->pr_stats;
! 416: off = nl[tp->pr_sindex].n_value;
! 417: } else {
! 418: pr = tp->pr_cblocks;
! 419: off = nl[tp->pr_index].n_value;
! 420: }
! 421: if (pr != NULL && (off || af != AF_UNSPEC))
! 422: (*pr)(off, name);
! 423: }
! 424:
! 425: /*
! 426: * Read kernel memory, return 0 on success.
! 427: */
! 428: int
! 429: kread(addr, buf, size)
! 430: u_long addr;
! 431: char *buf;
! 432: int size;
! 433: {
! 434:
! 435: if (kvm_read(kvmd, addr, buf, size) != size) {
! 436: /* XXX this duplicates kvm_read's error printout */
! 437: (void)fprintf(stderr, "%s: kvm_read %s\n", prog,
! 438: kvm_geterr(kvmd));
! 439: return (-1);
! 440: }
! 441: return (0);
! 442: }
! 443:
! 444: char *
! 445: plural(n)
! 446: int n;
! 447: {
! 448: return (n != 1 ? "s" : "");
! 449: }
! 450:
! 451: char *
! 452: plurales(n)
! 453: int n;
! 454: {
! 455: return (n != 1 ? "es" : "");
! 456: }
! 457:
! 458: /*
! 459: * Find the protox for the given "well-known" name.
! 460: */
! 461: static struct protox *
! 462: knownname(name)
! 463: char *name;
! 464: {
! 465: struct protox **tpp, *tp;
! 466:
! 467: for (tpp = protoprotox; *tpp; tpp++)
! 468: for (tp = *tpp; tp->pr_name; tp++)
! 469: if (strcmp(tp->pr_name, name) == 0)
! 470: return (tp);
! 471: return (NULL);
! 472: }
! 473:
! 474: /*
! 475: * Find the protox corresponding to name.
! 476: */
! 477: static struct protox *
! 478: name2protox(name)
! 479: char *name;
! 480: {
! 481: struct protox *tp;
! 482: char **alias; /* alias from p->aliases */
! 483: struct protoent *p;
! 484:
! 485: /*
! 486: * Try to find the name in the list of "well-known" names. If that
! 487: * fails, check if name is an alias for an Internet protocol.
! 488: */
! 489: if (tp = knownname(name))
! 490: return (tp);
! 491:
! 492: setprotoent(1); /* make protocol lookup cheaper */
! 493: while (p = getprotoent()) {
! 494: /* assert: name not same as p->name */
! 495: for (alias = p->p_aliases; *alias; alias++)
! 496: if (strcmp(name, *alias) == 0) {
! 497: endprotoent();
! 498: return (knownname(p->p_name));
! 499: }
! 500: }
! 501: endprotoent();
! 502: return (NULL);
! 503: }
! 504:
! 505: static void
! 506: usage()
! 507: {
! 508: (void)fprintf(stderr,
! 509: "usage: %s [-Aan] [-f address_family] [-M core] [-N system]\n", prog);
! 510: (void)fprintf(stderr,
! 511: " %s [-ghimnrs] [-f address_family] [-M core] [-N system]\n", prog);
! 512: (void)fprintf(stderr,
! 513: " %s [-n] [-I interface] [-M core] [-N system] [-w wait]\n", prog);
! 514: (void)fprintf(stderr,
! 515: " %s [-M core] [-N system] [-p protocol]\n", prog);
! 516: exit(1);
! 517: }