netstat.tproj/main.c

   1 /*
   2  * Copyright (c) 2008-2012 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /*
  29  * Copyright (c) 1983, 1988, 1993
  30  *      Regents of the University of California.  All rights reserved.
  31  *
  32  * Redistribution and use in source and binary forms, with or without
  33  * modification, are permitted provided that the following conditions
  34  * are met:
  35  * 1. Redistributions of source code must retain the above copyright
  36  *    notice, this list of conditions and the following disclaimer.
  37  * 2. Redistributions in binary form must reproduce the above copyright
  38  *    notice, this list of conditions and the following disclaimer in the
  39  *    documentation and/or other materials provided with the distribution.
  40  * 3. All advertising materials mentioning features or use of this software
  41  *    must display the following acknowledgement:
  42  *      This product includes software developed by the University of
  43  *      California, Berkeley and its contributors.
  44  * 4. Neither the name of the University nor the names of its contributors
  45  *    may be used to endorse or promote products derived from this software
  46  *    without specific prior written permission.
  47  *
  48  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  49  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  50  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  51  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  52  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  53  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  54  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  55  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  56  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  57  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  58  * SUCH DAMAGE.
  59  */
  60
  61 #ifndef lint
  62 char const copyright[] =
  63 "@(#) Copyright (c) 1983, 1988, 1993\n\
  64         Regents of the University of California.  All rights reserved.\n";
  65 #endif /* not lint */
  66
  67 #include <sys/param.h>
  68 #include <sys/file.h>
  69 #include <sys/socket.h>
  70
  71 #include <netinet/in.h>
  72 #include <net/pfkeyv2.h>
  73
  74 #include <ctype.h>
  75 #include <err.h>
  76 #include <errno.h>
  77 #include <limits.h>
  78 #include <netdb.h>
  79 #include <nlist.h>
  80 #include <paths.h>
  81 #include <stdio.h>
  82 #include <stdlib.h>
  83 #include <string.h>
  84 #include <unistd.h>
  85 #include "netstat.h"
  86 #include <sys/types.h>
  87 #include <sys/sysctl.h>
  88
  89 #ifdef __APPLE__
  90 #include <TargetConditionals.h>
  91 #endif
  92
  93 /*
  94  * ----------------------------------------------------------------------------
  95  * "THE BEER-WARE LICENSE" (Revision 42):
  96  * <phk@FreeBSD.org> wrote this file.  As long as you retain this notice you
  97  * can do whatever you want with this stuff. If we meet some day, and you think
  98  * this stuff is worth it, you can buy me a beer in return.   Poul-Henning Kamp
  99  * ----------------------------------------------------------------------------
 100  *
 101  * $Id: main.c,v 1.8 2004/10/14 22:24:09 lindak Exp $
 102  *
 103  */
 104
 105 static struct nlist nl[] = {
 106 #define N_IFNET         0
 107         { "_ifnet" },
 108 #define N_IMP           1
 109         { "_imp_softc" },
 110 #define N_RTSTAT        2
 111         { "_rtstat" },
 112 #define N_UNIXSW        3
 113         { "_localsw" },
 114 #define N_IDP           4
 115         { "_nspcb"},
 116 #define N_IDPSTAT       5
 117         { "_idpstat"},
 118 #define N_SPPSTAT       6
 119         { "_spp_istat"},
 120 #define N_NSERR         7
 121         { "_ns_errstat"},
 122 #define N_CLNPSTAT      8
 123         { "_clnp_stat"},
 124 #define IN_NOTUSED      9
 125         { "_tp_inpcb" },
 126 #define ISO_TP          10
 127         { "_tp_refinfo" },
 128 #define N_TPSTAT        11
 129         { "_tp_stat" },
 130 #define N_ESISSTAT      12
 131         { "_esis_stat"},
 132 #define N_NIMP          13
 133         { "_nimp"},
 134 #define N_RTREE         14
 135         { "_rt_tables"},
 136 #define N_CLTP          15
 137         { "_cltb"},
 138 #define N_CLTPSTAT      16
 139         { "_cltpstat"},
 140 #define N_NFILE         17
 141         { "_nfile" },
 142 #define N_FILE          18
 143         { "_file" },
 144 #define N_IPX           22
 145         { "_ipxpcb"},
 146 #define N_IPXSTAT       23
 147         { "_ipxstat"},
 148 #define N_SPXSTAT       24
 149         { "_spx_istat"},
 150 #define N_DDPSTAT       25
 151         { "_ddpstat"},
 152 #define N_DDPCB         26
 153         { "_ddpcb"},
 154 #define N_NGSOCKS       27
 155         { "_ngsocklist"},
 156 #define N_IP6STAT       28
 157         { "_ip6stat" },
 158 #define N_ICMP6STAT     29
 159         { "_icmp6stat" },
 160 #define N_IPSECSTAT     30
 161         { "_ipsecstat" },
 162 #define N_IPSEC6STAT    31
 163         { "_ipsec6stat" },
 164 #define N_PIM6STAT      32
 165         { "_pim6stat" },
 166 #define N_MRT6PROTO     33
 167         { "_ip6_mrtproto" },
 168 #define N_MRT6STAT      34
 169         { "_mrt6stat" },
 170 #define N_MF6CTABLE     35
 171         { "_mf6ctable" },
 172 #define N_MIF6TABLE     36
 173         { "_mif6table" },
 174 #define N_PFKEYSTAT     37
 175         { "_pfkeystat" },
 176 #define N_MBSTAT        38
 177         { "_mbstat" },
 178 #define N_MBTYPES       39
 179         { "_mbtypes" },
 180 #define N_NMBCLUSTERS   40
 181         { "_nmbclusters" },
 182 #define N_NMBUFS        41
 183         { "_nmbufs" },
 184 #define N_RTTRASH       42
 185         { "_rttrash" },
 186         { "" },
 187 };
 188
 189
 190 struct protox {
 191         u_char  pr_index;               /* index into nlist of cb head */
 192         u_char  pr_sindex;              /* index into nlist of stat block */
 193         u_char  pr_wanted;              /* 1 if wanted, 0 otherwise */
 194         void    (*pr_cblocks)(uint32_t, char *, int);
 195                                         /* control blocks printing routine */
 196         void    (*pr_stats)(uint32_t, char *, int);
 197                                         /* statistics printing routine */
 198         void    (*pr_istats)(char *);   /* per/if statistics printing routine */
 199         char    *pr_name;               /* well-known name */
 200         int     pr_usesysctl;           /* true if we use sysctl, not kvm */
 201 } protox[] = {
 202         { -1,           -1,             1,      protopr,
 203           tcp_stats,    NULL,           "tcp",  IPPROTO_TCP },
 204         { -1,           -1,             1,      protopr,
 205           udp_stats,    NULL,           "udp",  IPPROTO_UDP },
 206         { -1,           -1,             1,      protopr,
 207           NULL,         NULL,           "divert",IPPROTO_DIVERT },
 208         { -1,           -1,             1,      protopr,
 209           ip_stats,     NULL,           "ip",   IPPROTO_RAW },
 210         { -1,           -1,             1,      protopr,
 211           icmp_stats,   NULL,           "icmp", IPPROTO_ICMP },
 212         { -1,           -1,             1,      protopr,
 213           igmp_stats,   NULL,           "igmp", IPPROTO_IGMP },
 214 #ifdef IPSEC
 215         { -1,           -1,     1,      0,
 216           ipsec_stats,  NULL,           "ipsec",        IPPROTO_ESP},
 217 #endif
 218         { -1,           -1,             0,      0,
 219           0,            NULL,           0 }
 220 };
 221
 222 #ifdef INET6
 223 struct protox ip6protox[] = {
 224         { -1,           -1,             1,      protopr,
 225           tcp_stats,    NULL,           "tcp",  IPPROTO_TCP },
 226         { -1,           -1,             1,      protopr,
 227           udp_stats,    NULL,           "udp",  IPPROTO_UDP },
 228         { -1,           N_IP6STAT,      1,      protopr,
 229           ip6_stats,    ip6_ifstats,    "ip6",  IPPROTO_RAW },
 230         { -1,           N_ICMP6STAT,    1,      protopr,
 231           icmp6_stats,  icmp6_ifstats,  "icmp6",IPPROTO_ICMPV6 },
 232 #ifdef IPSEC
 233         { -1,           N_IPSEC6STAT,   1,      0,
 234           ipsec_stats,  NULL,           "ipsec6",IPPROTO_ESP },
 235 #endif
 236 #ifdef notyet
 237         { -1,           N_PIM6STAT,     1,      0,
 238           pim6_stats,   NULL,           "pim6", 0 },
 239 #endif
 240         { -1,           -1,             1,      0,
 241           rip6_stats,   NULL,           "rip6", IPPROTO_RAW },
 242         { -1,           -1,             0,      0,
 243           0,            NULL,           0,      0 }
 244 };
 245 #endif /*INET6*/
 246
 247 #ifdef IPSEC
 248 struct protox pfkeyprotox[] = {
 249         { -1,           N_PFKEYSTAT,    1,      0,
 250           pfkey_stats,  NULL,           "pfkey", PF_KEY_V2 },
 251         { -1,           -1,             0,      0,
 252           0,            NULL,           0,      0 }
 253 };
 254 #endif
 255
 256 struct protox *protoprotox[] = {
 257                                          protox,
 258 #ifdef INET6
 259                                          ip6protox,
 260 #endif
 261 #ifdef IPSEC
 262                                          pfkeyprotox,
 263 #endif
 264                                          NULL };
 265
 266 static void printproto (struct protox *, char *);
 267 static void usage (void);
 268 static struct protox *name2protox (char *);
 269 static struct protox *knownname (char *);
 270 #ifdef SRVCACHE
 271 extern void _serv_cache_close();
 272 #endif
 273
 274 int     Aflag;          /* show addresses of protocol control block */
 275 int     aflag;          /* show all sockets (including servers) */
 276 int     bflag;          /* show i/f total bytes in/out */
 277 int     cflag;          /* show specific classq */
 278 int     dflag;          /* show i/f dropped packets */
 279 #if defined(__APPLE__)
 280 int     gflag;          /* show group (multicast) routing or stats */
 281 #endif
 282 int     iflag;          /* show interfaces */
 283 int     lflag;          /* show routing table with use and ref */
 284 int     Lflag;          /* show size of listen queues */
 285 int     mflag;          /* show memory stats */
 286 int     nflag;          /* show addresses numerically */
 287 static int pflag;       /* show given protocol */
 288 int     prioflag = -1;  /* show packet priority statistics */
 289 int     Rflag;          /* show reachability information */
 290 int     rflag;          /* show routing tables (or routing stats) */
 291 int     sflag;          /* show protocol statistics */
 292 int     tflag;          /* show i/f watchdog timers */
 293 int     vflag;          /* more verbose */
 294 int     Wflag;          /* wide display */
 295 int     qflag;          /* classq stats display */
 296 int     Qflag;          /* opportunistic polling stats display */
 297 int     xflag;          /* show extended link-layer reachability information */
 298
 299 int     cq = -1;        /* send classq index (-1 for all) */
 300 int     interval;       /* repeat interval for i/f stats */
 301
 302 char    *interface;     /* desired i/f for stats, or NULL for all i/fs */
 303 int     unit;           /* unit number for above */
 304
 305 int     af;             /* address family */
 306
 307 int
 308 main(argc, argv)
 309         int argc;
 310         char *argv[];
 311 {
 312         register struct protox *tp = NULL;  /* for printing cblocks & stats */
 313         int ch;
 314
 315         af = AF_UNSPEC;
 316
 317         while ((ch = getopt(argc, argv, "Aabc:df:gI:iLlmnP:p:qQrRstuvWw:x")) != -1)
 318                 switch(ch) {
 319                 case 'A':
 320                         Aflag = 1;
 321                         break;
 322                 case 'a':
 323                         aflag = 1;
 324                         break;
 325                 case 'b':
 326                         bflag = 1;
 327                         break;
 328                 case 'c':
 329                         cflag = 1;
 330                         cq = atoi(optarg);
 331                         break;
 332                 case 'd':
 333                         dflag = 1;
 334                         break;
 335                 case 'f':
 336                         if (strcmp(optarg, "ipx") == 0)
 337                                 af = AF_IPX;
 338                         else if (strcmp(optarg, "inet") == 0)
 339                                 af = AF_INET;
 340 #ifdef INET6
 341                         else if (strcmp(optarg, "inet6") == 0)
 342                                 af = AF_INET6;
 343 #endif /*INET6*/
 344 #ifdef INET6
 345                         else if (strcmp(optarg, "pfkey") == 0)
 346                                 af = PF_KEY;
 347 #endif /*INET6*/
 348                         else if (strcmp(optarg, "unix") == 0)
 349                                 af = AF_UNIX;
 350                         else {
 351                                 errx(1, "%s: unknown address family", optarg);
 352                         }
 353                         break;
 354 #if defined(__APPLE__)
 355                 case 'g':
 356                         gflag = 1;
 357                         break;
 358 #endif
 359                 case 'I': {
 360                         char *cp;
 361
 362                         iflag = 1;
 363                         for (cp = interface = optarg; isalpha(*cp); cp++)
 364                                 continue;
 365                         unit = atoi(cp);
 366                         break;
 367                 }
 368                 case 'i':
 369                         iflag = 1;
 370                         break;
 371                 case 'l':
 372                         lflag = 1;
 373                         break;
 374                 case 'L':
 375                         Lflag = 1;
 376                         break;
 377                 case 'm':
 378                         mflag++;
 379                         break;
 380                 case 'n':
 381                         nflag = 1;
 382                         break;
 383                 case 'P':
 384                         prioflag = atoi(optarg);
 385                         break;
 386                 case 'p':
 387                         if ((tp = name2protox(optarg)) == NULL) {
 388                                 errx(1,
 389                                      "%s: unknown or uninstrumented protocol",
 390                                      optarg);
 391                         }
 392                         pflag = 1;
 393                         break;
 394                 case 'q':
 395                         qflag++;
 396                         break;
 397                 case 'Q':
 398                         Qflag++;
 399                         break;
 400                 case 'R':
 401                         Rflag = 1;
 402                         break;
 403                 case 'r':
 404                         rflag = 1;
 405                         break;
 406                 case 's':
 407                         ++sflag;
 408                         break;
 409                 case 't':
 410                         tflag = 1;
 411                         break;
 412                 case 'u':
 413                         af = AF_UNIX;
 414                         break;
 415                 case 'v':
 416                         vflag++;
 417                         break;
 418                 case 'W':
 419                         Wflag = 1;
 420                         break;
 421                 case 'w':
 422                         interval = atoi(optarg);
 423                         iflag = 1;
 424                         break;
 425                 case 'x':
 426                         xflag = 1;
 427                         Rflag = 1;
 428                         break;
 429                 case '?':
 430                 default:
 431                         usage();
 432                 }
 433         argv += optind;
 434         argc -= optind;
 435
 436 #define BACKWARD_COMPATIBILITY
 437 #ifdef  BACKWARD_COMPATIBILITY
 438         if (*argv) {
 439                 if (isdigit(**argv)) {
 440                         interval = atoi(*argv);
 441                         if (interval <= 0)
 442                                 usage();
 443                         ++argv;
 444                         iflag = 1;
 445                 }
 446         }
 447 #endif
 448
 449         if (mflag) {
 450                 mbpr();
 451                 exit(0);
 452         }
 453         if (iflag && !sflag && !gflag && !qflag && !Qflag) {
 454                 if (Rflag)
 455                         intpr_ri(NULL);
 456                 else
 457                         intpr(NULL);
 458                 exit(0);
 459         }
 460         if (rflag) {
 461                 if (sflag)
 462                         rt_stats();
 463                 else
 464                         routepr(nl[N_RTREE].n_value);
 465                 exit(0);
 466         }
 467         if (qflag || Qflag) {
 468                 if (interface == NULL) {
 469                         fprintf(stderr, "%s statistics option "
 470                             "requires interface name\n", qflag ? "Queue" :
 471                             "Polling");
 472                 } else if (qflag) {
 473                         aqstatpr();
 474                 } else {
 475                         rxpollstatpr();
 476                 }
 477                 exit(0);
 478         }
 479
 480 #if defined(__APPLE__)
 481         if (gflag) {
 482 #if !TARGET_OS_EMBEDDED
 483                 if (sflag) {
 484                         if (af == AF_INET || af == AF_UNSPEC)
 485                                 mrt_stats();
 486 #ifdef INET6
 487                         if (af == AF_INET6 || af == AF_UNSPEC)
 488                                 mrt6_stats();
 489 #endif
 490                 } else {
 491                         if (af == AF_INET || af == AF_UNSPEC)
 492                                 mroutepr();
 493 #ifdef INET6
 494                         if (af == AF_INET6 || af == AF_UNSPEC)
 495                                 mroute6pr();
 496 #endif
 497                 }
 498 #endif /* !TARGET_OS_EMBEDDED */
 499                 ifmalist_dump();
 500                 exit(0);
 501         }
 502 #endif
 503
 504         if (tp) {
 505                 printproto(tp, tp->pr_name);
 506                 exit(0);
 507         }
 508         if (af == AF_INET || af == AF_UNSPEC)
 509                 for (tp = protox; tp->pr_name; tp++)
 510                         printproto(tp, tp->pr_name);
 511 #ifdef INET6
 512         if (af == AF_INET6 || af == AF_UNSPEC)
 513                 for (tp = ip6protox; tp->pr_name; tp++)
 514                         printproto(tp, tp->pr_name);
 515 #endif /*INET6*/
 516 #ifdef IPSEC
 517         if (af == PF_KEY || af == AF_UNSPEC)
 518                 for (tp = pfkeyprotox; tp->pr_name; tp++)
 519                         printproto(tp, tp->pr_name);
 520 #endif /*IPSEC*/
 521         if ((af == AF_UNIX || af == AF_UNSPEC) && !Lflag && !sflag)
 522                 unixpr();
 523 #ifdef SRVCACHE
 524         _serv_cache_close();
 525 #endif
 526         exit(0);
 527 }
 528
 529 /*
 530  * Print out protocol statistics or control blocks (per sflag).
 531  * If the interface was not specifically requested, and the symbol
 532  * is not in the namelist, ignore this one.
 533  */
 534 static void
 535 printproto(tp, name)
 536         register struct protox *tp;
 537         char *name;
 538 {
 539         void (*pr)(uint32_t, char *, int);
 540         uint32_t off;
 541
 542         if (sflag) {
 543                 if (iflag && !pflag) {
 544                         if (tp->pr_istats)
 545                                 intpr(tp->pr_istats);
 546                         else
 547                                 printf("%s: no per-interface stats routine\n",
 548                                     tp->pr_name);
 549                         return;
 550                 }
 551                 else {
 552                         pr = tp->pr_stats;
 553                         if (!pr) {
 554                                 if (pflag)
 555                                         printf("%s: no stats routine\n",
 556                                             tp->pr_name);
 557                                 return;
 558                         }
 559                         off = tp->pr_usesysctl ? tp->pr_usesysctl
 560                                 : nl[tp->pr_sindex].n_value;
 561                 }
 562         } else {
 563                 pr = tp->pr_cblocks;
 564                 if (!pr) {
 565                         if (pflag)
 566                                 printf("%s: no PCB routine\n", tp->pr_name);
 567                         return;
 568                 }
 569                 off = tp->pr_usesysctl ? tp->pr_usesysctl
 570                         : nl[tp->pr_index].n_value;
 571         }
 572         if (pr != NULL && (off || af != AF_UNSPEC)) {
 573                 if (sflag && iflag && pflag)
 574                         intervalpr(pr, off, name, af);
 575                 else
 576                         (*pr)(off, name, af);
 577         } else {
 578                 printf("### no stats for %s\n", name);
 579         }
 580 }
 581
 582 char *
 583 plural(int n)
 584 {
 585         return (n != 1 ? "s" : "");
 586 }
 587
 588 char *
 589 plurales(int n)
 590 {
 591         return (n != 1 ? "es" : "");
 592 }
 593
 594 /*
 595  * Find the protox for the given "well-known" name.
 596  */
 597 static struct protox *
 598 knownname(char *name)
 599 {
 600         struct protox **tpp, *tp;
 601
 602         for (tpp = protoprotox; *tpp; tpp++)
 603                 for (tp = *tpp; tp->pr_name; tp++)
 604                         if (strcmp(tp->pr_name, name) == 0)
 605                                 return (tp);
 606         return (NULL);
 607 }
 608
 609 /*
 610  * Find the protox corresponding to name.
 611  */
 612 static struct protox *
 613 name2protox(char *name)
 614 {
 615         struct protox *tp;
 616         char **alias;                   /* alias from p->aliases */
 617         struct protoent *p;
 618
 619         /*
 620          * Try to find the name in the list of "well-known" names. If that
 621          * fails, check if name is an alias for an Internet protocol.
 622          */
 623         if ((tp = knownname(name)) != NULL)
 624                 return (tp);
 625
 626         setprotoent(1);                 /* make protocol lookup cheaper */
 627         while ((p = getprotoent()) != NULL) {
 628                 /* assert: name not same as p->name */
 629                 for (alias = p->p_aliases; *alias; alias++)
 630                         if (strcmp(name, *alias) == 0) {
 631                                 endprotoent();
 632                                 return (knownname(p->p_name));
 633                         }
 634         }
 635         endprotoent();
 636         return (NULL);
 637 }
 638
 639 #define NETSTAT_USAGE "\
 640 Usage:  netstat [-AaLlnW] [-f address_family | -p protocol]\n\
 641         netstat [-gilns] [-f address_family]\n\
 642         netstat -i | -I interface [-w wait] [-abdgRt]\n\
 643         netstat -s [-s] [-f address_family | -p protocol] [-w wait]\n\
 644         netstat -i | -I interface -s [-f address_family | -p protocol]\n\
 645         netstat -m [-m]\n\
 646         netstat -r [-Aaln] [-f address_family]\n\
 647         netstat -rs [-s]\n\
 648 "
 649
 650 static void
 651 usage(void)
 652 {
 653         (void) fprintf(stderr, "%s\n", NETSTAT_USAGE);
 654         exit(1);
 655 }