main.c revision 1.23
1 /* $NetBSD: main.c,v 1.23 1999/07/01 18:40:36 itojun 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 1.23 1999/07/01 18:40:36 itojun 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 <err.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" }, 136 #define N_MSIZE 32 137 { "_msize" }, 138 #define N_MCLBYTES 33 139 { "_mclbytes" }, 140 #define N_DDPSTAT 34 141 { "_ddpstat"}, 142 #define N_DDPCB 35 143 { "_ddpcb"}, 144 #define N_MBPOOL 36 145 { "_mbpool" }, 146 #define N_MCLPOOL 37 147 { "_mclpool" }, 148 #define N_DIVPCB 38 149 { "_divcb"}, 150 #define N_DIVSTAT 39 151 { "_divstat"}, 152 #define N_IP6STAT 40 153 { "_ip6stat" }, 154 #define N_TCB6 41 155 { "_tcb6" }, 156 #define N_TCP6STAT 42 157 { "_tcp6stat" }, 158 #define N_UDB6 43 159 { "_udb6" }, 160 #define N_UDP6STAT 44 161 { "_udp6stat" }, 162 #define N_ICMP6STAT 45 163 { "_icmp6stat" }, 164 #define N_IPSECSTAT 46 165 { "_ipsecstat" }, 166 #define N_IPSEC6STAT 47 167 { "_ipsec6stat" }, 168 #define N_PIM6STAT 48 169 { "_pim6stat" }, 170 #define N_MRT6PROTO 49 171 { "_ip6_mrtproto" }, 172 #define N_MRT6STAT 50 173 { "_mrt6stat" }, 174 #define N_MF6CTABLE 51 175 { "_mf6ctable" }, 176 #define N_MIF6TABLE 52 177 { "_mif6table" }, 178 { "" }, 179 }; 180 181 struct protox { 182 u_char pr_index; /* index into nlist of cb head */ 183 u_char pr_sindex; /* index into nlist of stat block */ 184 u_char pr_wanted; /* 1 if wanted, 0 otherwise */ 185 void (*pr_cblocks) /* control blocks printing routine */ 186 __P((u_long, char *)); 187 void (*pr_stats) /* statistics printing routine */ 188 __P((u_long, char *)); 189 void (*pr_dump) /* PCB state dump routine */ 190 __P((u_long)); 191 char *pr_name; /* well-known name */ 192 } protox[] = { 193 { N_TCBTABLE, N_TCPSTAT, 1, protopr, 194 tcp_stats, tcp_dump, "tcp" }, 195 { N_UDBTABLE, N_UDPSTAT, 1, protopr, 196 udp_stats, 0, "udp" }, 197 { -1, N_IPSTAT, 1, 0, 198 ip_stats, 0, "ip" }, 199 { -1, N_ICMPSTAT, 1, 0, 200 icmp_stats, 0, "icmp" }, 201 { -1, N_IGMPSTAT, 1, 0, 202 igmp_stats, 0, "igmp" }, 203 #ifdef IPSEC 204 { -1, N_IPSECSTAT, 1, 0, 205 ipsec_stats, 0, "ipsec" }, 206 #endif 207 { -1, -1, 0, 0, 208 0, 0, 0 } 209 }; 210 211 #ifdef INET6 212 struct protox ip6protox[] = { 213 { -1, N_IP6STAT, 1, 0, 214 ip6_stats, 0, "ip6" }, 215 { -1, N_ICMP6STAT, 1, 0, 216 icmp6_stats, 0, "icmp6" }, 217 #ifdef TCP6 218 { N_TCB6, N_TCP6STAT, 1, ip6protopr, 219 tcp6_stats, tcp6_dump, "tcp6" }, 220 #else 221 { N_TCB6, N_TCP6STAT, 1, ip6protopr, 222 tcp_stats, tcp_dump, "tcp6" }, 223 #endif 224 { N_UDB6, N_UDP6STAT, 1, ip6protopr, 225 udp6_stats, 0, "udp6" }, 226 #ifdef IPSEC 227 { -1, N_IPSEC6STAT, 1, 0, 228 ipsec_stats, 0, "ipsec6" }, 229 #endif 230 { -1, N_PIM6STAT, 1, 0, 231 pim6_stats, 0, "pim6" }, 232 { -1, -1, 0, 0, 233 0, 0, 0 } 234 }; 235 #endif 236 237 #ifndef SMALL 238 struct protox atalkprotox[] = { 239 { N_DDPCB, N_DDPSTAT, 1, atalkprotopr, 240 ddp_stats, 0, "ddp" }, 241 { -1, -1, 0, 0, 242 0, 0 } 243 }; 244 245 struct protox nsprotox[] = { 246 { N_IDP, N_IDPSTAT, 1, nsprotopr, 247 idp_stats, 0, "idp" }, 248 { N_IDP, N_SPPSTAT, 1, nsprotopr, 249 spp_stats, 0, "spp" }, 250 { -1, N_NSERR, 1, 0, 251 nserr_stats, 0, "ns_err" }, 252 { -1, -1, 0, 0, 253 0, 0 } 254 }; 255 256 struct protox isoprotox[] = { 257 { ISO_TP, N_TPSTAT, 1, iso_protopr, 258 tp_stats, 0, "tp" }, 259 { N_CLTP, N_CLTPSTAT, 1, iso_protopr, 260 cltp_stats, 0, "cltp" }, 261 { -1, N_CLNPSTAT, 1, 0, 262 clnp_stats, 0, "clnp"}, 263 { -1, N_ESISSTAT, 1, 0, 264 esis_stats, 0, "esis"}, 265 { -1, -1, 0, 0, 266 0, 0, 0 } 267 }; 268 #endif 269 270 struct protox *protoprotox[] = { protox, 271 #ifdef INET6 272 ip6protox, 273 #endif 274 #ifndef SMALL 275 atalkprotox, nsprotox, isoprotox, 276 #endif 277 NULL }; 278 279 int main __P((int, char *[])); 280 static void printproto __P((struct protox *, char *)); 281 static void usage __P((void)); 282 static struct protox *name2protox __P((char *)); 283 static struct protox *knownname __P((char *)); 284 285 kvm_t *kvmd; 286 287 int 288 main(argc, argv) 289 int argc; 290 char *argv[]; 291 { 292 extern char *optarg; 293 extern int optind; 294 struct protoent *p; 295 struct protox *tp; /* for printing cblocks & stats */ 296 int ch; 297 char *nlistf = NULL, *memf = NULL; 298 char buf[_POSIX2_LINE_MAX], *cp; 299 u_long pcbaddr; 300 gid_t egid = getegid(); 301 302 (void)setegid(getgid()); 303 tp = NULL; 304 af = AF_UNSPEC; 305 pcbaddr = 0; 306 307 while ((ch = getopt(argc, argv, "Aabdf:ghI:liM:mN:nP:p:rstuvw:")) != -1) 308 switch(ch) { 309 case 'A': 310 Aflag = 1; 311 break; 312 case 'a': 313 aflag = 1; 314 break; 315 case 'b': 316 bflag = 1; 317 break; 318 case 'd': 319 dflag = 1; 320 break; 321 case 'f': 322 if (strcmp(optarg, "ns") == 0) 323 af = AF_NS; 324 else if (strcmp(optarg, "inet") == 0) 325 af = AF_INET; 326 else if (strcmp(optarg, "inet6") == 0) 327 af = AF_INET6; 328 else if (strcmp(optarg, "unix") == 0 329 || strcmp(optarg, "local") == 0) 330 af = AF_LOCAL; 331 else if (strcmp(optarg, "iso") == 0) 332 af = AF_ISO; 333 else if (strcmp(optarg, "atalk") == 0) 334 af = AF_APPLETALK; 335 else 336 errx(1, "%s: unknown address family", 337 optarg); 338 break; 339 #ifndef SMALL 340 case 'g': 341 gflag = 1; 342 break; 343 #endif 344 case 'I': 345 iflag = 1; 346 interface = optarg; 347 break; 348 case 'i': 349 iflag = 1; 350 break; 351 case 'l': 352 lflag = 1; 353 break; 354 case 'M': 355 memf = optarg; 356 break; 357 case 'm': 358 mflag = 1; 359 break; 360 case 'N': 361 nlistf = optarg; 362 break; 363 case 'n': 364 nflag = 1; 365 break; 366 case 'P': 367 pcbaddr = strtoul(optarg, &cp, 16); 368 if (*cp != '\0' || errno == ERANGE) 369 errx(1, "invalid PCB address %s", 370 optarg); 371 Pflag = 1; 372 break; 373 case 'p': 374 if ((tp = name2protox(optarg)) == NULL) 375 errx(1, "%s: unknown or uninstrumented protocol", 376 optarg); 377 pflag = 1; 378 break; 379 case 'r': 380 rflag = 1; 381 break; 382 case 's': 383 ++sflag; 384 break; 385 case 't': 386 tflag = 1; 387 break; 388 case 'u': 389 af = AF_LOCAL; 390 break; 391 case 'v': 392 vflag = 1; 393 break; 394 case 'w': 395 interval = atoi(optarg); 396 iflag = 1; 397 break; 398 case '?': 399 default: 400 usage(); 401 } 402 argv += optind; 403 argc -= optind; 404 405 #define BACKWARD_COMPATIBILITY 406 #ifdef BACKWARD_COMPATIBILITY 407 if (*argv) { 408 if (isdigit(**argv)) { 409 interval = atoi(*argv); 410 if (interval <= 0) 411 usage(); 412 ++argv; 413 iflag = 1; 414 } 415 if (*argv) { 416 nlistf = *argv; 417 if (*++argv) 418 memf = *argv; 419 } 420 } 421 #endif 422 423 /* 424 * Discard setgid privileges. If not the running kernel, we toss 425 * them away totally so that bad guys can't print interesting stuff 426 * from kernel memory, otherwise switch back to kmem for the 427 * duration of the kvm_openfiles() call. 428 */ 429 if (nlistf != NULL || memf != NULL || Pflag) 430 (void)setgid(getgid()); 431 else 432 (void)setegid(egid); 433 434 if ((kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, 435 buf)) == NULL) 436 errx(1, "%s", buf); 437 438 /* do this now anyway */ 439 if (nlistf == NULL && memf == NULL) 440 (void)setgid(getgid()); 441 442 if (kvm_nlist(kvmd, nl) < 0 || nl[0].n_type == 0) { 443 if (nlistf) 444 errx(1, "%s: no namelist", nlistf); 445 else 446 errx(1, "no namelist"); 447 } 448 if (mflag) { 449 mbpr(nl[N_MBSTAT].n_value, nl[N_MSIZE].n_value, 450 nl[N_MCLBYTES].n_value, nl[N_MBPOOL].n_value, 451 nl[N_MCLPOOL].n_value); 452 exit(0); 453 } 454 if (Pflag) { 455 if (tp == NULL) { 456 /* Default to TCP. */ 457 tp = name2protox("tcp"); 458 } 459 if (tp->pr_dump) 460 (*tp->pr_dump)(pcbaddr); 461 else 462 printf("%s: no PCB dump routine\n", tp->pr_name); 463 exit(0); 464 } 465 if (pflag) { 466 if (tp->pr_stats) 467 (*tp->pr_stats)(nl[tp->pr_sindex].n_value, 468 tp->pr_name); 469 else 470 printf("%s: no stats routine\n", tp->pr_name); 471 exit(0); 472 } 473 /* 474 * Keep file descriptors open to avoid overhead 475 * of open/close on each call to get* routines. 476 */ 477 sethostent(1); 478 setnetent(1); 479 if (iflag) { 480 intpr(interval, nl[N_IFNET].n_value); 481 exit(0); 482 } 483 if (rflag) { 484 if (sflag) 485 rt_stats(nl[N_RTSTAT].n_value); 486 else 487 routepr(nl[N_RTREE].n_value); 488 exit(0); 489 } 490 #ifndef SMALL 491 if (gflag) { 492 if (sflag) { 493 if (af == AF_INET || af == AF_UNSPEC) 494 mrt_stats(nl[N_MRTPROTO].n_value, 495 nl[N_MRTSTAT].n_value); 496 #ifdef INET6 497 if (af == AF_INET6 || af == AF_UNSPEC) 498 mrt6_stats(nl[N_MRT6PROTO].n_value, 499 nl[N_MRT6STAT].n_value); 500 #endif 501 } 502 else { 503 if (af == AF_INET || af == AF_UNSPEC) 504 mroutepr(nl[N_MRTPROTO].n_value, 505 nl[N_MFCHASHTBL].n_value, 506 nl[N_MFCHASH].n_value, 507 nl[N_VIFTABLE].n_value); 508 #ifdef INET6 509 if (af == AF_INET6 || af == AF_UNSPEC) 510 mroute6pr(nl[N_MRT6PROTO].n_value, 511 nl[N_MF6CTABLE].n_value, 512 nl[N_MIF6TABLE].n_value); 513 #endif 514 } 515 exit(0); 516 } 517 #endif 518 if (af == AF_INET || af == AF_UNSPEC) { 519 setprotoent(1); 520 setservent(1); 521 /* ugh, this is O(MN) ... why do we do this? */ 522 while ((p = getprotoent()) != NULL) { 523 for (tp = protox; tp->pr_name; tp++) 524 if (strcmp(tp->pr_name, p->p_name) == 0) 525 break; 526 if (tp->pr_name == 0 || tp->pr_wanted == 0) 527 continue; 528 printproto(tp, p->p_name); 529 tp->pr_wanted = 0; 530 } 531 endprotoent(); 532 for (tp = protox; tp->pr_name; tp++) 533 if (tp->pr_wanted) 534 printproto(tp, tp->pr_name); 535 } 536 #ifdef INET6 537 if (af == AF_INET6 || af == AF_UNSPEC) 538 for (tp = ip6protox; tp->pr_name; tp++) 539 printproto(tp, tp->pr_name); 540 #endif 541 #ifndef SMALL 542 if (af == AF_APPLETALK || af == AF_UNSPEC) 543 for (tp = atalkprotox; tp->pr_name; tp++) 544 printproto(tp, tp->pr_name); 545 if (af == AF_NS || af == AF_UNSPEC) 546 for (tp = nsprotox; tp->pr_name; tp++) 547 printproto(tp, tp->pr_name); 548 if (af == AF_ISO || af == AF_UNSPEC) 549 for (tp = isoprotox; tp->pr_name; tp++) 550 printproto(tp, tp->pr_name); 551 if ((af == AF_LOCAL || af == AF_UNSPEC) && !sflag) 552 unixpr(nl[N_UNIXSW].n_value); 553 #endif 554 exit(0); 555 } 556 557 /* 558 * Print out protocol statistics or control blocks (per sflag). 559 * If the interface was not specifically requested, and the symbol 560 * is not in the namelist, ignore this one. 561 */ 562 static void 563 printproto(tp, name) 564 struct protox *tp; 565 char *name; 566 { 567 void (*pr) __P((u_long, char *)); 568 u_long off; 569 570 if (sflag) { 571 pr = tp->pr_stats; 572 off = nl[tp->pr_sindex].n_value; 573 } else { 574 pr = tp->pr_cblocks; 575 off = nl[tp->pr_index].n_value; 576 } 577 if (pr != NULL && (off || af != AF_UNSPEC)) 578 (*pr)(off, name); 579 } 580 581 /* 582 * Read kernel memory, return 0 on success. 583 */ 584 int 585 kread(addr, buf, size) 586 u_long addr; 587 char *buf; 588 int size; 589 { 590 591 if (kvm_read(kvmd, addr, buf, size) != size) { 592 warnx("%s\n", kvm_geterr(kvmd)); 593 return (-1); 594 } 595 return (0); 596 } 597 598 char * 599 plural(n) 600 int n; 601 { 602 603 return (n != 1 ? "s" : ""); 604 } 605 606 char * 607 plurales(n) 608 int n; 609 { 610 611 return (n != 1 ? "es" : ""); 612 } 613 614 /* 615 * Find the protox for the given "well-known" name. 616 */ 617 static struct protox * 618 knownname(name) 619 char *name; 620 { 621 struct protox **tpp, *tp; 622 623 for (tpp = protoprotox; *tpp; tpp++) 624 for (tp = *tpp; tp->pr_name; tp++) 625 if (strcmp(tp->pr_name, name) == 0) 626 return (tp); 627 return (NULL); 628 } 629 630 /* 631 * Find the protox corresponding to name. 632 */ 633 static struct protox * 634 name2protox(name) 635 char *name; 636 { 637 struct protox *tp; 638 char **alias; /* alias from p->aliases */ 639 struct protoent *p; 640 641 /* 642 * Try to find the name in the list of "well-known" names. If that 643 * fails, check if name is an alias for an Internet protocol. 644 */ 645 if ((tp = knownname(name)) != NULL) 646 return (tp); 647 648 setprotoent(1); /* make protocol lookup cheaper */ 649 while ((p = getprotoent()) != NULL) { 650 /* assert: name not same as p->name */ 651 for (alias = p->p_aliases; *alias; alias++) 652 if (strcmp(name, *alias) == 0) { 653 endprotoent(); 654 return (knownname(p->p_name)); 655 } 656 } 657 endprotoent(); 658 return (NULL); 659 } 660 661 static void 662 usage() 663 { 664 (void)fprintf(stderr, 665 "usage: %s [-Aan] [-f address_family] [-M core] [-N system]\n", __progname); 666 (void)fprintf(stderr, 667 " %s [-gimnrsv] [-f address_family] [-M core] [-N system]\n", 668 __progname); 669 (void)fprintf(stderr, 670 " %s [-n] [-I interface] [-M core] [-N system] [-w wait]\n", __progname); 671 (void)fprintf(stderr, 672 " %s [-M core] [-N system] [-p protocol]\n", __progname); 673 (void)fprintf(stderr, 674 " %s [-M core] [-N system] [-p protocol] -P pcbaddr\n", __progname); 675 exit(1); 676 } 677
Indexes created Sat Sep 27 22:09:54 GMT 2025