main.c revision 1.14
1 /* $NetBSD: main.c,v 1.14 1998/06/03 02:41:11 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 #include <sys/cdefs.h> 37 #ifndef lint 38 __COPYRIGHT("@(#) 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 __RCSID("$NetBSD: main.c,v 1.14 1998/06/03 02:41:11 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 #define N_MSIZE 32 136 { "_msize" }, 137 #define N_MCLBYTES 33 138 { "_mclbytes" }, 139 #define N_DDPSTAT 34 140 { "_ddpstat"}, 141 #define N_DDPCB 35 142 { "_ddpcb"}, 143 { "" }, 144 }; 145 146 struct protox { 147 u_char pr_index; /* index into nlist of cb head */ 148 u_char pr_sindex; /* index into nlist of stat block */ 149 u_char pr_wanted; /* 1 if wanted, 0 otherwise */ 150 void (*pr_cblocks) /* control blocks printing routine */ 151 __P((u_long, char *)); 152 void (*pr_stats) /* statistics printing routine */ 153 __P((u_long, char *)); 154 void (*pr_dump) /* PCB state dump routine */ 155 __P((u_long)); 156 char *pr_name; /* well-known name */ 157 } protox[] = { 158 { N_TCBTABLE, N_TCPSTAT, 1, protopr, 159 tcp_stats, tcp_dump, "tcp" }, 160 { N_UDBTABLE, N_UDPSTAT, 1, protopr, 161 udp_stats, 0, "udp" }, 162 { -1, N_IPSTAT, 1, 0, 163 ip_stats, 0, "ip" }, 164 { -1, N_ICMPSTAT, 1, 0, 165 icmp_stats, 0, "icmp" }, 166 { -1, N_IGMPSTAT, 1, 0, 167 igmp_stats, 0, "igmp" }, 168 { -1, -1, 0, 0, 169 0, 0, 0 } 170 }; 171 172 struct protox atalkprotox[] = { 173 { N_DDPCB, N_DDPSTAT, 1, atalkprotopr, 174 ddp_stats, 0, "ddp" }, 175 { -1, -1, 0, 0, 176 0, 0 } 177 }; 178 179 struct protox nsprotox[] = { 180 { N_IDP, N_IDPSTAT, 1, nsprotopr, 181 idp_stats, 0, "idp" }, 182 { N_IDP, N_SPPSTAT, 1, nsprotopr, 183 spp_stats, 0, "spp" }, 184 { -1, N_NSERR, 1, 0, 185 nserr_stats, 0, "ns_err" }, 186 { -1, -1, 0, 0, 187 0, 0 } 188 }; 189 190 struct protox isoprotox[] = { 191 { ISO_TP, N_TPSTAT, 1, iso_protopr, 192 tp_stats, 0, "tp" }, 193 { N_CLTP, N_CLTPSTAT, 1, iso_protopr, 194 cltp_stats, 0, "cltp" }, 195 { -1, N_CLNPSTAT, 1, 0, 196 clnp_stats, 0, "clnp"}, 197 { -1, N_ESISSTAT, 1, 0, 198 esis_stats, 0, "esis"}, 199 { -1, -1, 0, 0, 200 0, 0, 0 } 201 }; 202 203 struct protox *protoprotox[] = { protox, atalkprotox, 204 nsprotox, isoprotox, NULL }; 205 206 int main __P((int, char *[])); 207 static void printproto __P((struct protox *, char *)); 208 static void usage __P((void)); 209 static struct protox *name2protox __P((char *)); 210 static struct protox *knownname __P((char *)); 211 212 213 kvm_t *kvmd; 214 215 int 216 main(argc, argv) 217 int argc; 218 char *argv[]; 219 { 220 extern char *optarg; 221 extern int optind; 222 struct protoent *p; 223 struct protox *tp; /* for printing cblocks & stats */ 224 int ch; 225 char *nlistf = NULL, *memf = NULL; 226 char buf[_POSIX2_LINE_MAX], *cp; 227 u_long pcbaddr; 228 229 tp = NULL; 230 af = AF_UNSPEC; 231 pcbaddr = 0; 232 233 while ((ch = getopt(argc, argv, "Aabdf:ghI:iM:mN:nP:p:rstuw:")) != -1) 234 switch(ch) { 235 case 'A': 236 Aflag = 1; 237 break; 238 case 'a': 239 aflag = 1; 240 break; 241 case 'b': 242 bflag = 1; 243 break; 244 case 'd': 245 dflag = 1; 246 break; 247 case 'f': 248 if (strcmp(optarg, "ns") == 0) 249 af = AF_NS; 250 else if (strcmp(optarg, "inet") == 0) 251 af = AF_INET; 252 else if (strcmp(optarg, "unix") == 0) 253 af = AF_UNIX; 254 else if (strcmp(optarg, "iso") == 0) 255 af = AF_ISO; 256 else if (strcmp(optarg, "atalk") == 0) 257 af = AF_APPLETALK; 258 else { 259 (void)fprintf(stderr, 260 "%s: %s: unknown address family\n", 261 __progname, optarg); 262 exit(1); 263 } 264 break; 265 case 'g': 266 gflag = 1; 267 break; 268 case 'I': 269 iflag = 1; 270 interface = optarg; 271 break; 272 case 'i': 273 iflag = 1; 274 break; 275 case 'M': 276 memf = optarg; 277 break; 278 case 'm': 279 mflag = 1; 280 break; 281 case 'N': 282 nlistf = optarg; 283 break; 284 case 'n': 285 nflag = 1; 286 break; 287 case 'P': 288 pcbaddr = strtoul(optarg, &cp, 16); 289 if (*cp != '\0' || errno == ERANGE) { 290 (void)fprintf(stderr, 291 "%s: invalid PCB address %s\n", 292 __progname, optarg); 293 exit(1); 294 } 295 Pflag = 1; 296 break; 297 case 'p': 298 if ((tp = name2protox(optarg)) == NULL) { 299 (void)fprintf(stderr, 300 "%s: %s: unknown or uninstrumented protocol\n", 301 __progname, optarg); 302 exit(1); 303 } 304 pflag = 1; 305 break; 306 case 'r': 307 rflag = 1; 308 break; 309 case 's': 310 ++sflag; 311 break; 312 case 't': 313 tflag = 1; 314 break; 315 case 'u': 316 af = AF_UNIX; 317 break; 318 case 'w': 319 interval = atoi(optarg); 320 iflag = 1; 321 break; 322 case '?': 323 default: 324 usage(); 325 } 326 argv += optind; 327 argc -= optind; 328 329 #define BACKWARD_COMPATIBILITY 330 #ifdef BACKWARD_COMPATIBILITY 331 if (*argv) { 332 if (isdigit(**argv)) { 333 interval = atoi(*argv); 334 if (interval <= 0) 335 usage(); 336 ++argv; 337 iflag = 1; 338 } 339 if (*argv) { 340 nlistf = *argv; 341 if (*++argv) 342 memf = *argv; 343 } 344 } 345 #endif 346 347 /* 348 * Discard setgid privileges if not the running kernel so that bad 349 * guys can't print interesting stuff from kernel memory. 350 */ 351 if (nlistf != NULL || memf != NULL) 352 setgid(getgid()); 353 354 if ((kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, 355 buf)) == NULL) { 356 fprintf(stderr, "%s: kvm_open: %s\n", __progname, buf); 357 exit(1); 358 } 359 if (kvm_nlist(kvmd, nl) < 0 || nl[0].n_type == 0) { 360 if (nlistf) 361 fprintf(stderr, "%s: %s: no namelist\n", __progname, 362 nlistf); 363 else 364 fprintf(stderr, "%s: no namelist\n", __progname); 365 exit(1); 366 } 367 if (mflag) { 368 mbpr(nl[N_MBSTAT].n_value, nl[N_MSIZE].n_value, 369 nl[N_MCLBYTES].n_value); 370 exit(0); 371 } 372 if (Pflag) { 373 if (tp == NULL) { 374 /* Default to TCP. */ 375 tp = name2protox("tcp"); 376 } 377 if (tp->pr_dump) 378 (*tp->pr_dump)(pcbaddr); 379 else 380 printf("%s: no PCB dump routine\n", tp->pr_name); 381 exit(0); 382 } 383 if (pflag) { 384 if (tp->pr_stats) 385 (*tp->pr_stats)(nl[tp->pr_sindex].n_value, 386 tp->pr_name); 387 else 388 printf("%s: no stats routine\n", tp->pr_name); 389 exit(0); 390 } 391 /* 392 * Keep file descriptors open to avoid overhead 393 * of open/close on each call to get* routines. 394 */ 395 sethostent(1); 396 setnetent(1); 397 if (iflag) { 398 intpr(interval, nl[N_IFNET].n_value); 399 exit(0); 400 } 401 if (rflag) { 402 if (sflag) 403 rt_stats(nl[N_RTSTAT].n_value); 404 else 405 routepr(nl[N_RTREE].n_value); 406 exit(0); 407 } 408 if (gflag) { 409 if (sflag) 410 mrt_stats(nl[N_MRTPROTO].n_value, 411 nl[N_MRTSTAT].n_value); 412 else 413 mroutepr(nl[N_MRTPROTO].n_value, 414 nl[N_MFCHASHTBL].n_value, 415 nl[N_MFCHASH].n_value, 416 nl[N_VIFTABLE].n_value); 417 exit(0); 418 } 419 if (af == AF_INET || af == AF_UNSPEC) { 420 setprotoent(1); 421 setservent(1); 422 /* ugh, this is O(MN) ... why do we do this? */ 423 while ((p = getprotoent()) != NULL) { 424 for (tp = protox; tp->pr_name; tp++) 425 if (strcmp(tp->pr_name, p->p_name) == 0) 426 break; 427 if (tp->pr_name == 0 || tp->pr_wanted == 0) 428 continue; 429 printproto(tp, p->p_name); 430 } 431 endprotoent(); 432 } 433 if (af == AF_APPLETALK || af == AF_UNSPEC) 434 for (tp = atalkprotox; tp->pr_name; tp++) 435 printproto(tp, tp->pr_name); 436 if (af == AF_NS || af == AF_UNSPEC) 437 for (tp = nsprotox; tp->pr_name; tp++) 438 printproto(tp, tp->pr_name); 439 if (af == AF_ISO || af == AF_UNSPEC) 440 for (tp = isoprotox; tp->pr_name; tp++) 441 printproto(tp, tp->pr_name); 442 if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag) 443 unixpr(nl[N_UNIXSW].n_value); 444 exit(0); 445 } 446 447 /* 448 * Print out protocol statistics or control blocks (per sflag). 449 * If the interface was not specifically requested, and the symbol 450 * is not in the namelist, ignore this one. 451 */ 452 static void 453 printproto(tp, name) 454 struct protox *tp; 455 char *name; 456 { 457 void (*pr) __P((u_long, char *)); 458 u_long off; 459 460 if (sflag) { 461 pr = tp->pr_stats; 462 off = nl[tp->pr_sindex].n_value; 463 } else { 464 pr = tp->pr_cblocks; 465 off = nl[tp->pr_index].n_value; 466 } 467 if (pr != NULL && (off || af != AF_UNSPEC)) 468 (*pr)(off, name); 469 } 470 471 /* 472 * Read kernel memory, return 0 on success. 473 */ 474 int 475 kread(addr, buf, size) 476 u_long addr; 477 char *buf; 478 int size; 479 { 480 481 if (kvm_read(kvmd, addr, buf, size) != size) { 482 (void)fprintf(stderr, "%s: %s\n", __progname, 483 kvm_geterr(kvmd)); 484 return (-1); 485 } 486 return (0); 487 } 488 489 char * 490 plural(n) 491 int n; 492 { 493 return (n != 1 ? "s" : ""); 494 } 495 496 char * 497 plurales(n) 498 int n; 499 { 500 return (n != 1 ? "es" : ""); 501 } 502 503 /* 504 * Find the protox for the given "well-known" name. 505 */ 506 static struct protox * 507 knownname(name) 508 char *name; 509 { 510 struct protox **tpp, *tp; 511 512 for (tpp = protoprotox; *tpp; tpp++) 513 for (tp = *tpp; tp->pr_name; tp++) 514 if (strcmp(tp->pr_name, name) == 0) 515 return (tp); 516 return (NULL); 517 } 518 519 /* 520 * Find the protox corresponding to name. 521 */ 522 static struct protox * 523 name2protox(name) 524 char *name; 525 { 526 struct protox *tp; 527 char **alias; /* alias from p->aliases */ 528 struct protoent *p; 529 530 /* 531 * Try to find the name in the list of "well-known" names. If that 532 * fails, check if name is an alias for an Internet protocol. 533 */ 534 if ((tp = knownname(name)) != NULL) 535 return (tp); 536 537 setprotoent(1); /* make protocol lookup cheaper */ 538 while ((p = getprotoent()) != NULL) { 539 /* assert: name not same as p->name */ 540 for (alias = p->p_aliases; *alias; alias++) 541 if (strcmp(name, *alias) == 0) { 542 endprotoent(); 543 return (knownname(p->p_name)); 544 } 545 } 546 endprotoent(); 547 return (NULL); 548 } 549 550 static void 551 usage() 552 { 553 (void)fprintf(stderr, 554 "usage: %s [-Aan] [-f address_family] [-M core] [-N system]\n", __progname); 555 (void)fprintf(stderr, 556 " %s [-ghimnrs] [-f address_family] [-M core] [-N system]\n", __progname); 557 (void)fprintf(stderr, 558 " %s [-n] [-I interface] [-M core] [-N system] [-w wait]\n", __progname); 559 (void)fprintf(stderr, 560 " %s [-M core] [-N system] [-p protocol]\n", __progname); 561 (void)fprintf(stderr, 562 " %s [-M core] [-N system] [-p protocol] -P pcbaddr\n", __progname); 563 exit(1); 564 } 565
Indexes created Tue Sep 30 10:09:55 GMT 2025