sunrpc/rpcinfo.c

   1
   2 /* @(#)rpcinfo.c        2.2 88/08/11 4.0 RPCSRC */
   3 #if !defined(lint) && defined (SCCSID)
   4 static char sccsid[] = "@(#)rpcinfo.c 1.22 87/08/12 SMI";
   5 #endif
   6
   7 /*
   8  * Copyright (C) 1986, Sun Microsystems, Inc.
   9  */
  10
  11 /*
  12  * rpcinfo: ping a particular rpc program
  13  *     or dump the portmapper
  14  */
  15
  16 /*
  17  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
  18  * unrestricted use provided that this legend is included on all tape
  19  * media and as a part of the software program in whole or part.  Users
  20  * may copy or modify Sun RPC without charge, but are not authorized
  21  * to license or distribute it to anyone else except as part of a product or
  22  * program developed by the user.
  23  *
  24  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  25  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
  26  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
  27  *
  28  * Sun RPC is provided with no support and without any obligation on the
  29  * part of Sun Microsystems, Inc. to assist in its use, correction,
  30  * modification or enhancement.
  31  *
  32  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  33  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  34  * OR ANY PART THEREOF.
  35  *
  36  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  37  * or profits or other special, indirect and consequential damages, even if
  38  * Sun has been advised of the possibility of such damages.
  39  *
  40  * Sun Microsystems, Inc.
  41  * 2550 Garcia Avenue
  42  * Mountain View, California  94043
  43  */
  44
  45 #include <getopt.h>
  46 #include <string.h>
  47 #include <unistd.h>
  48 #include <rpc/rpc.h>
  49 #include <stdio.h>
  50 #include <sys/socket.h>
  51 #include <netinet/in.h>
  52 #include <arpa/inet.h>
  53 #include <netdb.h>
  54 #include <rpc/pmap_prot.h>
  55 #include <rpc/pmap_clnt.h>
  56 #include <signal.h>
  57 #include <ctype.h>
  58 #include <locale.h>
  59 #include <libintl.h>
  60
  61 #define MAXHOSTLEN 256
  62
  63 #define MIN_VERS        ((u_long) 0)
  64 #define MAX_VERS        ((u_long) 4294967295UL)
  65
  66 static void udpping (u_short portflag, int argc, char **argv);
  67 static void tcpping (u_short portflag, int argc, char **argv);
  68 static int pstatus (CLIENT *client, u_long prognum, u_long vers);
  69 static void pmapdump (int argc, char **argv);
  70 static bool_t reply_proc (void *res, struct sockaddr_in *who);
  71 static void brdcst (int argc, char **argv) __attribute__ ((noreturn));
  72 static void deletereg (int argc, char **argv);
  73 static void usage (void);
  74 static u_long getprognum (char *arg);
  75 static u_long getvers (char *arg);
  76 static void get_inet_address (struct sockaddr_in *addr, char *host);
  77
  78 /*
  79  * Functions to be performed.
  80  */
  81 #define NONE            0       /* no function */
  82 #define PMAPDUMP        1       /* dump portmapper registrations */
  83 #define TCPPING         2       /* ping TCP service */
  84 #define UDPPING         3       /* ping UDP service */
  85 #define BRDCST          4       /* ping broadcast UDP service */
  86 #define DELETES         5       /* delete registration for the service */
  87
  88 int
  89 main (int argc, char **argv)
  90 {
  91   register int c;
  92   int errflg;
  93   int function;
  94   u_short portnum;
  95
  96   setlocale (LC_ALL, "");
  97   textdomain (_libc_intl_domainname);
  98
  99   function = NONE;
 100   portnum = 0;
 101   errflg = 0;
 102   while ((c = getopt (argc, argv, "ptubdn:")) != -1)
 103     {
 104       switch (c)
 105         {
 106
 107         case 'p':
 108           if (function != NONE)
 109             errflg = 1;
 110           else
 111             function = PMAPDUMP;
 112           break;
 113
 114         case 't':
 115           if (function != NONE)
 116             errflg = 1;
 117           else
 118             function = TCPPING;
 119           break;
 120
 121         case 'u':
 122           if (function != NONE)
 123             errflg = 1;
 124           else
 125             function = UDPPING;
 126           break;
 127
 128         case 'b':
 129           if (function != NONE)
 130             errflg = 1;
 131           else
 132             function = BRDCST;
 133           break;
 134
 135         case 'n':
 136           portnum = (u_short) atoi (optarg);    /* hope we don't get bogus # */
 137           break;
 138
 139         case 'd':
 140           if (function != NONE)
 141             errflg = 1;
 142           else
 143             function = DELETES;
 144           break;
 145
 146         case '?':
 147           errflg = 1;
 148         }
 149     }
 150
 151   if (errflg || function == NONE)
 152     {
 153       usage ();
 154       return 1;
 155     }
 156
 157   switch (function)
 158     {
 159
 160     case PMAPDUMP:
 161       if (portnum != 0)
 162         {
 163           usage ();
 164           return 1;
 165         }
 166       pmapdump (argc - optind, argv + optind);
 167       break;
 168
 169     case UDPPING:
 170       udpping (portnum, argc - optind, argv + optind);
 171       break;
 172
 173     case TCPPING:
 174       tcpping (portnum, argc - optind, argv + optind);
 175       break;
 176
 177     case BRDCST:
 178       if (portnum != 0)
 179         {
 180           usage ();
 181           return 1;
 182         }
 183       brdcst (argc - optind, argv + optind);
 184       break;
 185
 186     case DELETES:
 187       deletereg (argc - optind, argv + optind);
 188       break;
 189     }
 190
 191   return 0;
 192 }
 193
 194 static void
 195 udpping (portnum, argc, argv)
 196      u_short portnum;
 197      int argc;
 198      char **argv;
 199 {
 200   struct timeval to;
 201   struct sockaddr_in addr;
 202   enum clnt_stat rpc_stat;
 203   CLIENT *client;
 204   u_long prognum, vers, minvers, maxvers;
 205   int sock = RPC_ANYSOCK;
 206   struct rpc_err rpcerr;
 207   int failure;
 208
 209   if (argc < 2 || argc > 3)
 210     {
 211       usage ();
 212       exit (1);
 213     }
 214   prognum = getprognum (argv[1]);
 215   get_inet_address (&addr, argv[0]);
 216   /* Open the socket here so it will survive calls to clnt_destroy */
 217   sock = socket (AF_INET, SOCK_DGRAM, IPPROTO_UDP);
 218   if (sock < 0)
 219     {
 220       perror ("rpcinfo: socket");
 221       exit (1);
 222     }
 223   failure = 0;
 224   if (argc == 2)
 225     {
 226       /*
 227        * A call to version 0 should fail with a program/version
 228        * mismatch, and give us the range of versions supported.
 229        */
 230       addr.sin_port = htons (portnum);
 231       to.tv_sec = 5;
 232       to.tv_usec = 0;
 233       if ((client = clntudp_create (&addr, prognum, (u_long) 0,
 234                                     to, &sock)) == NULL)
 235         {
 236           clnt_pcreateerror ("rpcinfo");
 237           printf (_("program %lu is not available\n"), prognum);
 238           exit (1);
 239         }
 240       to.tv_sec = 10;
 241       to.tv_usec = 0;
 242       rpc_stat = clnt_call (client, NULLPROC, (xdrproc_t) xdr_void,
 243                             (char *) NULL, (xdrproc_t) xdr_void,
 244                             (char *) NULL, to);
 245       if (rpc_stat == RPC_PROGVERSMISMATCH)
 246         {
 247           clnt_geterr (client, &rpcerr);
 248           minvers = rpcerr.re_vers.low;
 249           maxvers = rpcerr.re_vers.high;
 250         }
 251       else if (rpc_stat == RPC_SUCCESS)
 252         {
 253           /*
 254            * Oh dear, it DOES support version 0.
 255            * Let's try version MAX_VERS.
 256            */
 257           addr.sin_port = htons (portnum);
 258           to.tv_sec = 5;
 259           to.tv_usec = 0;
 260           if ((client = clntudp_create (&addr, prognum, MAX_VERS,
 261                                         to, &sock)) == NULL)
 262             {
 263               clnt_pcreateerror ("rpcinfo");
 264               printf (_("program %lu version %lu is not available\n"),
 265                       prognum, MAX_VERS);
 266               exit (1);
 267             }
 268           to.tv_sec = 10;
 269           to.tv_usec = 0;
 270           rpc_stat = clnt_call (client, NULLPROC, (xdrproc_t) xdr_void,
 271                                 NULL, (xdrproc_t) xdr_void, NULL, to);
 272           if (rpc_stat == RPC_PROGVERSMISMATCH)
 273             {
 274               clnt_geterr (client, &rpcerr);
 275               minvers = rpcerr.re_vers.low;
 276               maxvers = rpcerr.re_vers.high;
 277             }
 278           else if (rpc_stat == RPC_SUCCESS)
 279             {
 280               /*
 281                * It also supports version MAX_VERS.
 282                * Looks like we have a wise guy.
 283                * OK, we give them information on all
 284                * 4 billion versions they support...
 285                */
 286               minvers = 0;
 287               maxvers = MAX_VERS;
 288             }
 289           else
 290             {
 291               (void) pstatus (client, prognum, MAX_VERS);
 292               exit (1);
 293             }
 294         }
 295       else
 296         {
 297           (void) pstatus (client, prognum, (u_long) 0);
 298           exit (1);
 299         }
 300       clnt_destroy (client);
 301       for (vers = minvers; vers <= maxvers; vers++)
 302         {
 303           addr.sin_port = htons (portnum);
 304           to.tv_sec = 5;
 305           to.tv_usec = 0;
 306           if ((client = clntudp_create (&addr, prognum, vers,
 307                                         to, &sock)) == NULL)
 308             {
 309               clnt_pcreateerror ("rpcinfo");
 310               printf (_("program %lu version %lu is not available\n"),
 311                       prognum, vers);
 312               exit (1);
 313             }
 314           to.tv_sec = 10;
 315           to.tv_usec = 0;
 316           rpc_stat = clnt_call (client, NULLPROC, (xdrproc_t) xdr_void,
 317                                 NULL, (xdrproc_t) xdr_void, NULL, to);
 318           if (pstatus (client, prognum, vers) < 0)
 319             failure = 1;
 320           clnt_destroy (client);
 321         }
 322     }
 323   else
 324     {
 325       vers = getvers (argv[2]);
 326       addr.sin_port = htons (portnum);
 327       to.tv_sec = 5;
 328       to.tv_usec = 0;
 329       if ((client = clntudp_create (&addr, prognum, vers,
 330                                     to, &sock)) == NULL)
 331         {
 332           clnt_pcreateerror ("rpcinfo");
 333           printf (_("program %lu version %lu is not available\n"),
 334                   prognum, vers);
 335           exit (1);
 336         }
 337       to.tv_sec = 10;
 338       to.tv_usec = 0;
 339       rpc_stat = clnt_call (client, 0, (xdrproc_t) xdr_void, NULL,
 340                             (xdrproc_t) xdr_void, NULL, to);
 341       if (pstatus (client, prognum, vers) < 0)
 342         failure = 1;
 343     }
 344   (void) close (sock);          /* Close it up again */
 345   if (failure)
 346     exit (1);
 347 }
 348
 349 static void
 350 tcpping (portnum, argc, argv)
 351      u_short portnum;
 352      int argc;
 353      char **argv;
 354 {
 355   struct timeval to;
 356   struct sockaddr_in addr;
 357   enum clnt_stat rpc_stat;
 358   CLIENT *client;
 359   u_long prognum, vers, minvers, maxvers;
 360   int sock = RPC_ANYSOCK;
 361   struct rpc_err rpcerr;
 362   int failure;
 363
 364   if (argc < 2 || argc > 3)
 365     {
 366       usage ();
 367       exit (1);
 368     }
 369   prognum = getprognum (argv[1]);
 370   get_inet_address (&addr, argv[0]);
 371   failure = 0;
 372   if (argc == 2)
 373     {
 374       /*
 375        * A call to version 0 should fail with a program/version
 376        * mismatch, and give us the range of versions supported.
 377        */
 378       addr.sin_port = htons (portnum);
 379       if ((client = clnttcp_create (&addr, prognum, MIN_VERS,
 380                                     &sock, 0, 0)) == NULL)
 381         {
 382           clnt_pcreateerror ("rpcinfo");
 383           printf (_("program %lu is not available\n"), prognum);
 384           exit (1);
 385         }
 386       to.tv_sec = 10;
 387       to.tv_usec = 0;
 388       rpc_stat = clnt_call (client, NULLPROC, (xdrproc_t) xdr_void, NULL,
 389                             (xdrproc_t) xdr_void, NULL, to);
 390       if (rpc_stat == RPC_PROGVERSMISMATCH)
 391         {
 392           clnt_geterr (client, &rpcerr);
 393           minvers = rpcerr.re_vers.low;
 394           maxvers = rpcerr.re_vers.high;
 395         }
 396       else if (rpc_stat == RPC_SUCCESS)
 397         {
 398           /*
 399            * Oh dear, it DOES support version 0.
 400            * Let's try version MAX_VERS.
 401            */
 402           addr.sin_port = htons (portnum);
 403           if ((client = clnttcp_create (&addr, prognum, MAX_VERS,
 404                                         &sock, 0, 0)) == NULL)
 405             {
 406               clnt_pcreateerror ("rpcinfo");
 407               printf (_("program %lu version %lu is not available\n"),
 408                       prognum, MAX_VERS);
 409               exit (1);
 410             }
 411           to.tv_sec = 10;
 412           to.tv_usec = 0;
 413           rpc_stat = clnt_call (client, NULLPROC, (xdrproc_t) xdr_void,
 414                                 NULL, (xdrproc_t) xdr_void, NULL, to);
 415           if (rpc_stat == RPC_PROGVERSMISMATCH)
 416             {
 417               clnt_geterr (client, &rpcerr);
 418               minvers = rpcerr.re_vers.low;
 419               maxvers = rpcerr.re_vers.high;
 420             }
 421           else if (rpc_stat == RPC_SUCCESS)
 422             {
 423               /*
 424                * It also supports version MAX_VERS.
 425                * Looks like we have a wise guy.
 426                * OK, we give them information on all
 427                * 4 billion versions they support...
 428                */
 429               minvers = 0;
 430               maxvers = MAX_VERS;
 431             }
 432           else
 433             {
 434               (void) pstatus (client, prognum, MAX_VERS);
 435               exit (1);
 436             }
 437         }
 438       else
 439         {
 440           (void) pstatus (client, prognum, MIN_VERS);
 441           exit (1);
 442         }
 443       clnt_destroy (client);
 444       (void) close (sock);
 445       sock = RPC_ANYSOCK;       /* Re-initialize it for later */
 446       for (vers = minvers; vers <= maxvers; vers++)
 447         {
 448           addr.sin_port = htons (portnum);
 449           if ((client = clnttcp_create (&addr, prognum, vers,
 450                                         &sock, 0, 0)) == NULL)
 451             {
 452               clnt_pcreateerror ("rpcinfo");
 453               printf (_("program %lu version %lu is not available\n"),
 454                       prognum, vers);
 455               exit (1);
 456             }
 457           to.tv_usec = 0;
 458           to.tv_sec = 10;
 459           rpc_stat = clnt_call (client, 0, (xdrproc_t) xdr_void, NULL,
 460                                 (xdrproc_t) xdr_void, NULL, to);
 461           if (pstatus (client, prognum, vers) < 0)
 462             failure = 1;
 463           clnt_destroy (client);
 464           (void) close (sock);
 465           sock = RPC_ANYSOCK;
 466         }
 467     }
 468   else
 469     {
 470       vers = getvers (argv[2]);
 471       addr.sin_port = htons (portnum);
 472       if ((client = clnttcp_create (&addr, prognum, vers, &sock,
 473                                     0, 0)) == NULL)
 474         {
 475           clnt_pcreateerror ("rpcinfo");
 476           printf (_("program %lu version %lu is not available\n"),
 477                   prognum, vers);
 478           exit (1);
 479         }
 480       to.tv_usec = 0;
 481       to.tv_sec = 10;
 482       rpc_stat = clnt_call (client, 0, (xdrproc_t) xdr_void, NULL,
 483                             (xdrproc_t) xdr_void, NULL, to);
 484       if (pstatus (client, prognum, vers) < 0)
 485         failure = 1;
 486     }
 487   if (failure)
 488     exit (1);
 489 }
 490
 491 /*
 492  * This routine should take a pointer to an "rpc_err" structure, rather than
 493  * a pointer to a CLIENT structure, but "clnt_perror" takes a pointer to
 494  * a CLIENT structure rather than a pointer to an "rpc_err" structure.
 495  * As such, we have to keep the CLIENT structure around in order to print
 496  * a good error message.
 497  */
 498 static int
 499 pstatus (client, prognum, vers)
 500      register CLIENT *client;
 501      u_long prognum;
 502      u_long vers;
 503 {
 504   struct rpc_err rpcerr;
 505
 506   clnt_geterr (client, &rpcerr);
 507   if (rpcerr.re_status != RPC_SUCCESS)
 508     {
 509       clnt_perror (client, "rpcinfo");
 510       printf (_("program %lu version %lu is not available\n"), prognum, vers);
 511       return -1;
 512     }
 513   else
 514     {
 515       printf (_("program %lu version %lu ready and waiting\n"), prognum, vers);
 516       return 0;
 517     }
 518 }
 519
 520 static void
 521 pmapdump (argc, argv)
 522      int argc;
 523      char **argv;
 524 {
 525   struct sockaddr_in server_addr;
 526   register struct hostent *hp;
 527   struct pmaplist *head = NULL;
 528   int socket = RPC_ANYSOCK;
 529   struct timeval minutetimeout;
 530   register CLIENT *client;
 531   struct rpcent *rpc;
 532
 533   if (argc > 1)
 534     {
 535       usage ();
 536       exit (1);
 537     }
 538   if (argc == 1)
 539     get_inet_address (&server_addr, argv[0]);
 540   else
 541     {
 542       bzero ((char *) &server_addr, sizeof server_addr);
 543       server_addr.sin_family = AF_INET;
 544       if ((hp = gethostbyname ("localhost")) != NULL)
 545         memcpy ((caddr_t) & server_addr.sin_addr, hp->h_addr,
 546                  hp->h_length);
 547       else
 548         server_addr.sin_addr.s_addr = inet_addr ("0.0.0.0");
 549     }
 550   minutetimeout.tv_sec = 60;
 551   minutetimeout.tv_usec = 0;
 552   server_addr.sin_port = htons (PMAPPORT);
 553   if ((client = clnttcp_create (&server_addr, PMAPPROG,
 554                                 PMAPVERS, &socket, 50, 500)) == NULL)
 555     {
 556       clnt_pcreateerror (_("rpcinfo: can't contact portmapper"));
 557       exit (1);
 558     }
 559   if (clnt_call (client, PMAPPROC_DUMP, (xdrproc_t) xdr_void, NULL,
 560                  (xdrproc_t) xdr_pmaplist, (caddr_t) &head,
 561                  minutetimeout) != RPC_SUCCESS)
 562     {
 563       fputs (_("rpcinfo: can't contact portmapper"), stderr);
 564       fputs (": ", stderr);
 565       clnt_perror (client, "rpcinfo");
 566       exit (1);
 567     }
 568   if (head == NULL)
 569     {
 570       fputs (_("No remote programs registered.\n"), stdout);
 571     }
 572   else
 573     {
 574       fputs (_("   program vers proto   port\n"), stdout);
 575       for (; head != NULL; head = head->pml_next)
 576         {
 577           printf ("%10ld%5ld",
 578                   head->pml_map.pm_prog,
 579                   head->pml_map.pm_vers);
 580           if (head->pml_map.pm_prot == IPPROTO_UDP)
 581             printf ("%6s", "udp");
 582           else if (head->pml_map.pm_prot == IPPROTO_TCP)
 583             printf ("%6s", "tcp");
 584           else
 585             printf ("%6ld", head->pml_map.pm_prot);
 586           printf ("%7ld", head->pml_map.pm_port);
 587           rpc = getrpcbynumber (head->pml_map.pm_prog);
 588           if (rpc)
 589             printf ("  %s\n", rpc->r_name);
 590           else
 591             printf ("\n");
 592         }
 593     }
 594 }
 595
 596 /*
 597  * reply_proc collects replies from the broadcast.
 598  * to get a unique list of responses the output of rpcinfo should
 599  * be piped through sort(1) and then uniq(1).
 600  */
 601
 602 /*ARGSUSED */
 603 static bool_t
 604 reply_proc (res, who)
 605      void *res;                 /* Nothing comes back */
 606      struct sockaddr_in *who;   /* Who sent us the reply */
 607 {
 608   register struct hostent *hp;
 609
 610   hp = gethostbyaddr ((char *) &who->sin_addr, sizeof who->sin_addr,
 611                       AF_INET);
 612   printf ("%s %s\n", inet_ntoa (who->sin_addr),
 613           (hp == NULL) ? _("(unknown)") : hp->h_name);
 614   return FALSE;
 615 }
 616
 617 static void
 618 brdcst (argc, argv)
 619      int argc;
 620      char **argv;
 621 {
 622   enum clnt_stat rpc_stat;
 623   u_long prognum, vers;
 624
 625   if (argc != 2)
 626     {
 627       usage ();
 628       exit (1);
 629     }
 630   prognum = getprognum (argv[0]);
 631   vers = getvers (argv[1]);
 632   rpc_stat = clnt_broadcast (prognum, vers, NULLPROC, (xdrproc_t) xdr_void,
 633                              NULL, (xdrproc_t) xdr_void, NULL,
 634                              (resultproc_t) reply_proc);
 635   if ((rpc_stat != RPC_SUCCESS) && (rpc_stat != RPC_TIMEDOUT))
 636     {
 637       fprintf (stderr, _("rpcinfo: broadcast failed: %s\n"),
 638                clnt_sperrno (rpc_stat));
 639       exit (1);
 640     }
 641   exit (0);
 642 }
 643
 644 static void
 645 deletereg (argc, argv)
 646      int argc;
 647      char **argv;
 648 {
 649   u_long prog_num, version_num;
 650
 651   if (argc != 2)
 652     {
 653       usage ();
 654       exit (1);
 655     }
 656   if (getuid ())
 657     {                           /* This command allowed only to root */
 658       fputs (_("Sorry. You are not root\n"), stderr);
 659       exit (1);
 660     }
 661   prog_num = getprognum (argv[0]);
 662   version_num = getvers (argv[1]);
 663   if ((pmap_unset (prog_num, version_num)) == 0)
 664     {
 665       fprintf (stderr, _("rpcinfo: Could not delete registration for prog %s version %s\n"),
 666                argv[0], argv[1]);
 667       exit (1);
 668     }
 669 }
 670
 671 static void
 672 usage ()
 673 {
 674   fputs (_("Usage: rpcinfo [ -n portnum ] -u host prognum [ versnum ]\n"),
 675          stderr);
 676   fputs (_("       rpcinfo [ -n portnum ] -t host prognum [ versnum ]\n"),
 677          stderr);
 678   fputs (_("       rpcinfo -p [ host ]\n"), stderr);
 679   fputs (_("       rpcinfo -b prognum versnum\n"), stderr);
 680   fputs (_("       rpcinfo -d prognum versnum\n"), stderr);
 681 }
 682
 683 static u_long
 684 getprognum (arg)
 685      char *arg;
 686 {
 687   register struct rpcent *rpc;
 688   register u_long prognum;
 689
 690   if (isalpha (*arg))
 691     {
 692       rpc = getrpcbyname (arg);
 693       if (rpc == NULL)
 694         {
 695           fprintf (stderr, _("rpcinfo: %s is unknown service\n"), arg);
 696           exit (1);
 697         }
 698       prognum = rpc->r_number;
 699     }
 700   else
 701     {
 702       prognum = (u_long) atoi (arg);
 703     }
 704
 705   return prognum;
 706 }
 707
 708 static u_long
 709 getvers (arg)
 710      char *arg;
 711 {
 712   register u_long vers;
 713
 714   vers = (int) atoi (arg);
 715   return vers;
 716 }
 717
 718 static void
 719 get_inet_address (addr, host)
 720      struct sockaddr_in *addr;
 721      char *host;
 722 {
 723   register struct hostent *hp;
 724
 725   bzero ((char *) addr, sizeof *addr);
 726   addr->sin_addr.s_addr = (u_long) inet_addr (host);
 727   if (addr->sin_addr.s_addr == INADDR_NONE
 728       || addr->sin_addr.s_addr == INADDR_ANY)
 729     {
 730       if ((hp = gethostbyname (host)) == NULL)
 731         {
 732           fprintf (stderr, _("rpcinfo: %s is unknown host\n"),
 733                    host);
 734           exit (1);
 735         }
 736       memmove ((char *) &addr->sin_addr, hp->h_addr, hp->h_length);
 737     }
 738   addr->sin_family = AF_INET;
 739 }