lib/libc/rpc/clnt_bcast.c

   1 /*      $NetBSD: clnt_bcast.c,v 1.3 2000/07/06 03:05:20 christos Exp $  */
   2
   3 /*
   4  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
   5  * unrestricted use provided that this legend is included on all tape
   6  * media and as a part of the software program in whole or part.  Users
   7  * may copy or modify Sun RPC without charge, but are not authorized
   8  * to license or distribute it to anyone else except as part of a product or
   9  * program developed by the user.
  10  *
  11  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  12  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
  13  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
  14  *
  15  * Sun RPC is provided with no support and without any obligation on the
  16  * part of Sun Microsystems, Inc. to assist in its use, correction,
  17  * modification or enhancement.
  18  *
  19  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  20  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  21  * OR ANY PART THEREOF.
  22  *
  23  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  24  * or profits or other special, indirect and consequential damages, even if
  25  * Sun has been advised of the possibility of such damages.
  26  *
  27  * Sun Microsystems, Inc.
  28  * 2550 Garcia Avenue
  29  * Mountain View, California  94043
  30  */
  31 /*
  32  * Copyright (c) 1986-1991 by Sun Microsystems Inc.
  33  */
  34
  35 #if defined(LIBC_SCCS) && !defined(lint)
  36 #ident  "@(#)clnt_bcast.c       1.18    94/05/03 SMI"
  37 static char sccsid[] = "@(#)clnt_bcast.c 1.15 89/04/21 Copyr 1988 Sun Micro";
  38 #endif
  39 #include <sys/cdefs.h>
  40 __FBSDID("$FreeBSD$");
  41
  42
  43 /*
  44  * clnt_bcast.c
  45  * Client interface to broadcast service.
  46  *
  47  * Copyright (C) 1988, Sun Microsystems, Inc.
  48  *
  49  * The following is kludged-up support for simple rpc broadcasts.
  50  * Someday a large, complicated system will replace these routines.
  51  */
  52
  53 #include "namespace.h"
  54 #include <sys/types.h>
  55 #include <sys/socket.h>
  56 #include <sys/queue.h>
  57 #include <net/if.h>
  58 #include <netinet/in.h>
  59 #include <ifaddrs.h>
  60 #include <sys/poll.h>
  61 #include <rpc/rpc.h>
  62 #ifdef PORTMAP
  63 #include <rpc/pmap_prot.h>
  64 #include <rpc/pmap_clnt.h>
  65 #include <rpc/pmap_rmt.h>
  66 #endif                          /* PORTMAP */
  67 #include <rpc/nettype.h>
  68 #include <arpa/inet.h>
  69 #ifdef RPC_DEBUG
  70 #include <stdio.h>
  71 #endif
  72 #include <errno.h>
  73 #include <stdlib.h>
  74 #include <unistd.h>
  75 #include <netdb.h>
  76 #include <err.h>
  77 #include <string.h>
  78 #include "un-namespace.h"
  79
  80 #include "rpc_com.h"
  81
  82 #define MAXBCAST 20     /* Max no of broadcasting transports */
  83 #define INITTIME 4000   /* Time to wait initially */
  84 #define WAITTIME 8000   /* Maximum time to wait */
  85
  86 /*
  87  * If nettype is NULL, it broadcasts on all the available
  88  * datagram_n transports. May potentially lead to broadacst storms
  89  * and hence should be used with caution, care and courage.
  90  *
  91  * The current parameter xdr packet size is limited by the max tsdu
  92  * size of the transport. If the max tsdu size of any transport is
  93  * smaller than the parameter xdr packet, then broadcast is not
  94  * sent on that transport.
  95  *
  96  * Also, the packet size should be less the packet size of
  97  * the data link layer (for ethernet it is 1400 bytes).  There is
  98  * no easy way to find out the max size of the data link layer and
  99  * we are assuming that the args would be smaller than that.
 100  *
 101  * The result size has to be smaller than the transport tsdu size.
 102  *
 103  * If PORTMAP has been defined, we send two packets for UDP, one for
 104  * rpcbind and one for portmap. For those machines which support
 105  * both rpcbind and portmap, it will cause them to reply twice, and
 106  * also here it will get two responses ... inefficient and clumsy.
 107  */
 108
 109 struct broadif {
 110         int index;
 111         struct sockaddr_storage broadaddr;
 112         TAILQ_ENTRY(broadif) link;
 113 };
 114
 115 typedef TAILQ_HEAD(, broadif) broadlist_t;
 116
 117 int __rpc_getbroadifs(int, int, int, broadlist_t *);
 118 void __rpc_freebroadifs(broadlist_t *);
 119 int __rpc_broadenable(int, int, struct broadif *);
 120
 121 int __rpc_lowvers = 0;
 122
 123 int
 124 __rpc_getbroadifs(int af, int proto, int socktype, broadlist_t *list)
 125 {
 126         int count = 0;
 127         struct broadif *bip;
 128         struct ifaddrs *ifap, *ifp;
 129 #ifdef INET6
 130         struct sockaddr_in6 *sin6;
 131 #endif
 132         struct sockaddr_in *sin;
 133         struct addrinfo hints, *res;
 134
 135         if (getifaddrs(&ifp) < 0)
 136                 return 0;
 137
 138         memset(&hints, 0, sizeof hints);
 139
 140         hints.ai_family = af;
 141         hints.ai_protocol = proto;
 142         hints.ai_socktype = socktype;
 143
 144         if (getaddrinfo(NULL, "sunrpc", &hints, &res) != 0)
 145                 return 0;
 146
 147         for (ifap = ifp; ifap != NULL; ifap = ifap->ifa_next) {
 148                 if (ifap->ifa_addr->sa_family != af ||
 149                     !(ifap->ifa_flags & IFF_UP))
 150                         continue;
 151                 bip = (struct broadif *)malloc(sizeof *bip);
 152                 if (bip == NULL)
 153                         break;
 154                 bip->index = if_nametoindex(ifap->ifa_name);
 155                 if (
 156 #ifdef INET6
 157                 af != AF_INET6 &&
 158 #endif
 159                 (ifap->ifa_flags & IFF_BROADCAST) &&
 160                  ifap->ifa_broadaddr) {
 161                         memcpy(&bip->broadaddr, ifap->ifa_broadaddr,
 162                             (size_t)ifap->ifa_broadaddr->sa_len);
 163                         sin = (struct sockaddr_in *)(void *)&bip->broadaddr;
 164                         sin->sin_port =
 165                             ((struct sockaddr_in *)
 166                             (void *)res->ai_addr)->sin_port;
 167                 } else
 168 #ifdef INET6
 169                 if (af == AF_INET6 && (ifap->ifa_flags & IFF_MULTICAST)) {
 170                         sin6 = (struct sockaddr_in6 *)(void *)&bip->broadaddr;
 171                         inet_pton(af, RPCB_MULTICAST_ADDR, &sin6->sin6_addr);
 172                         sin6->sin6_family = af;
 173                         sin6->sin6_len = sizeof *sin6;
 174                         sin6->sin6_port =
 175                             ((struct sockaddr_in6 *)
 176                             (void *)res->ai_addr)->sin6_port;
 177                         sin6->sin6_scope_id = bip->index;
 178                 } else
 179 #endif
 180                 {
 181                         free(bip);
 182                         continue;
 183                 }
 184                 TAILQ_INSERT_TAIL(list, bip, link);
 185                 count++;
 186         }
 187         freeifaddrs(ifp);
 188         freeaddrinfo(res);
 189
 190         return count;
 191 }
 192
 193 void
 194 __rpc_freebroadifs(broadlist_t *list)
 195 {
 196         struct broadif *bip, *next;
 197
 198         bip = TAILQ_FIRST(list);
 199
 200         while (bip != NULL) {
 201                 next = TAILQ_NEXT(bip, link);
 202                 free(bip);
 203                 bip = next;
 204         }
 205 }
 206
 207 int
 208 /*ARGSUSED*/
 209 __rpc_broadenable(int af, int s, struct broadif *bip)
 210 {
 211         int o = 1;
 212
 213 #if 0
 214         if (af == AF_INET6) {
 215                 fprintf(stderr, "set v6 multicast if to %d\n", bip->index);
 216                 if (_setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_IF, &bip->index,
 217                     sizeof bip->index) < 0)
 218                         return -1;
 219         } else
 220 #endif
 221                 if (_setsockopt(s, SOL_SOCKET, SO_BROADCAST, &o, sizeof o) < 0)
 222                         return -1;
 223
 224         return 0;
 225 }
 226
 227
 228 enum clnt_stat
 229 rpc_broadcast_exp(prog, vers, proc, xargs, argsp, xresults, resultsp,
 230         eachresult, inittime, waittime, nettype)
 231         rpcprog_t       prog;           /* program number */
 232         rpcvers_t       vers;           /* version number */
 233         rpcproc_t       proc;           /* procedure number */
 234         xdrproc_t       xargs;          /* xdr routine for args */
 235         caddr_t         argsp;          /* pointer to args */
 236         xdrproc_t       xresults;       /* xdr routine for results */
 237         caddr_t         resultsp;       /* pointer to results */
 238         resultproc_t    eachresult;     /* call with each result obtained */
 239         int             inittime;       /* how long to wait initially */
 240         int             waittime;       /* maximum time to wait */
 241         const char              *nettype;       /* transport type */
 242 {
 243         enum clnt_stat  stat = RPC_SUCCESS; /* Return status */
 244         XDR             xdr_stream; /* XDR stream */
 245         XDR             *xdrs = &xdr_stream;
 246         struct rpc_msg  msg;    /* RPC message */
 247         struct timeval  t;
 248         char            *outbuf = NULL; /* Broadcast msg buffer */
 249         char            *inbuf = NULL; /* Reply buf */
 250         int             inlen;
 251         u_int           maxbufsize = 0;
 252         AUTH            *sys_auth = authunix_create_default();
 253         int             i;
 254         void            *handle;
 255         char            uaddress[1024]; /* A self imposed limit */
 256         char            *uaddrp = uaddress;
 257         int             pmap_reply_flag; /* reply recvd from PORTMAP */
 258         /* An array of all the suitable broadcast transports */
 259         struct {
 260                 int fd;         /* File descriptor */
 261                 int af;
 262                 int proto;
 263                 struct netconfig *nconf; /* Netconfig structure */
 264                 u_int asize;    /* Size of the addr buf */
 265                 u_int dsize;    /* Size of the data buf */
 266                 struct sockaddr_storage raddr; /* Remote address */
 267                 broadlist_t nal;
 268         } fdlist[MAXBCAST];
 269         struct pollfd pfd[MAXBCAST];
 270         size_t fdlistno = 0;
 271         struct r_rpcb_rmtcallargs barg; /* Remote arguments */
 272         struct r_rpcb_rmtcallres bres; /* Remote results */
 273         size_t outlen;
 274         struct netconfig *nconf;
 275         int msec;
 276         int pollretval;
 277         int fds_found;
 278
 279 #ifdef PORTMAP
 280         size_t outlen_pmap = 0;
 281         u_long port;            /* Remote port number */
 282         int pmap_flag = 0;      /* UDP exists ? */
 283         char *outbuf_pmap = NULL;
 284         struct rmtcallargs barg_pmap;   /* Remote arguments */
 285         struct rmtcallres bres_pmap; /* Remote results */
 286         u_int udpbufsz = 0;
 287 #endif                          /* PORTMAP */
 288
 289         if (sys_auth == NULL) {
 290                 return (RPC_SYSTEMERROR);
 291         }
 292         /*
 293          * initialization: create a fd, a broadcast address, and send the
 294          * request on the broadcast transport.
 295          * Listen on all of them and on replies, call the user supplied
 296          * function.
 297          */
 298
 299         if (nettype == NULL)
 300                 nettype = "datagram_n";
 301         if ((handle = __rpc_setconf(nettype)) == NULL) {
 302                 return (RPC_UNKNOWNPROTO);
 303         }
 304         while ((nconf = __rpc_getconf(handle)) != NULL) {
 305                 int fd;
 306                 struct __rpc_sockinfo si;
 307
 308                 if (nconf->nc_semantics != NC_TPI_CLTS)
 309                         continue;
 310                 if (fdlistno >= MAXBCAST)
 311                         break;  /* No more slots available */
 312                 if (!__rpc_nconf2sockinfo(nconf, &si))
 313                         continue;
 314
 315                 TAILQ_INIT(&fdlist[fdlistno].nal);
 316                 if (__rpc_getbroadifs(si.si_af, si.si_proto, si.si_socktype,
 317                     &fdlist[fdlistno].nal) == 0)
 318                         continue;
 319
 320                 fd = _socket(si.si_af, si.si_socktype, si.si_proto);
 321                 if (fd < 0) {
 322                         stat = RPC_CANTSEND;
 323                         continue;
 324                 }
 325                 fdlist[fdlistno].af = si.si_af;
 326                 fdlist[fdlistno].proto = si.si_proto;
 327                 fdlist[fdlistno].fd = fd;
 328                 fdlist[fdlistno].nconf = nconf;
 329                 fdlist[fdlistno].asize = __rpc_get_a_size(si.si_af);
 330                 pfd[fdlistno].events = POLLIN | POLLPRI |
 331                         POLLRDNORM | POLLRDBAND;
 332                 pfd[fdlistno].fd = fdlist[fdlistno].fd = fd;
 333                 fdlist[fdlistno].dsize = __rpc_get_t_size(si.si_af, si.si_proto,
 334                                                           0);
 335
 336                 if (maxbufsize <= fdlist[fdlistno].dsize)
 337                         maxbufsize = fdlist[fdlistno].dsize;
 338
 339 #ifdef PORTMAP
 340                 if (si.si_af == AF_INET && si.si_proto == IPPROTO_UDP) {
 341                         udpbufsz = fdlist[fdlistno].dsize;
 342                         if ((outbuf_pmap = malloc(udpbufsz)) == NULL) {
 343                                 _close(fd);
 344                                 stat = RPC_SYSTEMERROR;
 345                                 goto done_broad;
 346                         }
 347                         pmap_flag = 1;
 348                 }
 349 #endif                          /* PORTMAP */
 350                 fdlistno++;
 351         }
 352
 353         if (fdlistno == 0) {
 354                 if (stat == RPC_SUCCESS)
 355                         stat = RPC_UNKNOWNPROTO;
 356                 goto done_broad;
 357         }
 358         if (maxbufsize == 0) {
 359                 if (stat == RPC_SUCCESS)
 360                         stat = RPC_CANTSEND;
 361                 goto done_broad;
 362         }
 363         inbuf = malloc(maxbufsize);
 364         outbuf = malloc(maxbufsize);
 365         if ((inbuf == NULL) || (outbuf == NULL)) {
 366                 stat = RPC_SYSTEMERROR;
 367                 goto done_broad;
 368         }
 369
 370         /* Serialize all the arguments which have to be sent */
 371         (void) gettimeofday(&t, NULL);
 372         msg.rm_xid = __RPC_GETXID(&t);
 373         msg.rm_direction = CALL;
 374         msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
 375         msg.rm_call.cb_prog = RPCBPROG;
 376         msg.rm_call.cb_vers = RPCBVERS;
 377         msg.rm_call.cb_proc = RPCBPROC_CALLIT;
 378         barg.prog = prog;
 379         barg.vers = vers;
 380         barg.proc = proc;
 381         barg.args.args_val = argsp;
 382         barg.xdr_args = xargs;
 383         bres.addr = uaddrp;
 384         bres.results.results_val = resultsp;
 385         bres.xdr_res = xresults;
 386         msg.rm_call.cb_cred = sys_auth->ah_cred;
 387         msg.rm_call.cb_verf = sys_auth->ah_verf;
 388         xdrmem_create(xdrs, outbuf, maxbufsize, XDR_ENCODE);
 389         if ((!xdr_callmsg(xdrs, &msg)) ||
 390             (!xdr_rpcb_rmtcallargs(xdrs,
 391             (struct rpcb_rmtcallargs *)(void *)&barg))) {
 392                 stat = RPC_CANTENCODEARGS;
 393                 goto done_broad;
 394         }
 395         outlen = xdr_getpos(xdrs);
 396         xdr_destroy(xdrs);
 397
 398 #ifdef PORTMAP
 399         /* Prepare the packet for version 2 PORTMAP */
 400         if (pmap_flag) {
 401                 msg.rm_xid++;   /* One way to distinguish */
 402                 msg.rm_call.cb_prog = PMAPPROG;
 403                 msg.rm_call.cb_vers = PMAPVERS;
 404                 msg.rm_call.cb_proc = PMAPPROC_CALLIT;
 405                 barg_pmap.prog = prog;
 406                 barg_pmap.vers = vers;
 407                 barg_pmap.proc = proc;
 408                 barg_pmap.args_ptr = argsp;
 409                 barg_pmap.xdr_args = xargs;
 410                 bres_pmap.port_ptr = &port;
 411                 bres_pmap.xdr_results = xresults;
 412                 bres_pmap.results_ptr = resultsp;
 413                 xdrmem_create(xdrs, outbuf_pmap, udpbufsz, XDR_ENCODE);
 414                 if ((! xdr_callmsg(xdrs, &msg)) ||
 415                     (! xdr_rmtcall_args(xdrs, &barg_pmap))) {
 416                         stat = RPC_CANTENCODEARGS;
 417                         goto done_broad;
 418                 }
 419                 outlen_pmap = xdr_getpos(xdrs);
 420                 xdr_destroy(xdrs);
 421         }
 422 #endif                          /* PORTMAP */
 423
 424         /*
 425          * Basic loop: broadcast the packets to transports which
 426          * support data packets of size such that one can encode
 427          * all the arguments.
 428          * Wait a while for response(s).
 429          * The response timeout grows larger per iteration.
 430          */
 431         for (msec = inittime; msec <= waittime; msec += msec) {
 432                 struct broadif *bip;
 433
 434                 /* Broadcast all the packets now */
 435                 for (i = 0; i < fdlistno; i++) {
 436                         if (fdlist[i].dsize < outlen) {
 437                                 stat = RPC_CANTSEND;
 438                                 continue;
 439                         }
 440                         for (bip = TAILQ_FIRST(&fdlist[i].nal); bip != NULL;
 441                              bip = TAILQ_NEXT(bip, link)) {
 442                                 void *addr;
 443
 444                                 addr = &bip->broadaddr;
 445
 446                                 __rpc_broadenable(fdlist[i].af, fdlist[i].fd,
 447                                     bip);
 448
 449                                 /*
 450                                  * Only use version 3 if lowvers is not set
 451                                  */
 452
 453                                 if (!__rpc_lowvers)
 454                                         if (_sendto(fdlist[i].fd, outbuf,
 455                                             outlen, 0, (struct sockaddr*)addr,
 456                                             (size_t)fdlist[i].asize) !=
 457                                             outlen) {
 458 #ifdef RPC_DEBUG
 459                                                 perror("sendto");
 460 #endif
 461                                                 warnx("clnt_bcast: cannot send"
 462                                                       "broadcast packet");
 463                                                 stat = RPC_CANTSEND;
 464                                                 continue;
 465                                         };
 466 #ifdef RPC_DEBUG
 467                                 if (!__rpc_lowvers)
 468                                         fprintf(stderr, "Broadcast packet sent "
 469                                                 "for %s\n",
 470                                                  fdlist[i].nconf->nc_netid);
 471 #endif
 472 #ifdef PORTMAP
 473                                 /*
 474                                  * Send the version 2 packet also
 475                                  * for UDP/IP
 476                                  */
 477                                 if (pmap_flag &&
 478                                     fdlist[i].proto == IPPROTO_UDP) {
 479                                         if (_sendto(fdlist[i].fd, outbuf_pmap,
 480                                             outlen_pmap, 0, addr,
 481                                             (size_t)fdlist[i].asize) !=
 482                                                 outlen_pmap) {
 483                                                 warnx("clnt_bcast: "
 484                                                     "Cannot send broadcast packet");
 485                                                 stat = RPC_CANTSEND;
 486                                                 continue;
 487                                         }
 488                                 }
 489 #ifdef RPC_DEBUG
 490                                 fprintf(stderr, "PMAP Broadcast packet "
 491                                         "sent for %s\n",
 492                                         fdlist[i].nconf->nc_netid);
 493 #endif
 494 #endif                          /* PORTMAP */
 495                         }
 496                         /* End for sending all packets on this transport */
 497                 }       /* End for sending on all transports */
 498
 499                 if (eachresult == NULL) {
 500                         stat = RPC_SUCCESS;
 501                         goto done_broad;
 502                 }
 503
 504                 /*
 505                  * Get all the replies from these broadcast requests
 506                  */
 507         recv_again:
 508
 509                 switch (pollretval = _poll(pfd, fdlistno, msec)) {
 510                 case 0:         /* timed out */
 511                         stat = RPC_TIMEDOUT;
 512                         continue;
 513                 case -1:        /* some kind of error - we ignore it */
 514                         goto recv_again;
 515                 }               /* end of poll results switch */
 516
 517                 for (i = fds_found = 0;
 518                      i < fdlistno && fds_found < pollretval; i++) {
 519                         bool_t done = FALSE;
 520
 521                         if (pfd[i].revents == 0)
 522                                 continue;
 523                         else if (pfd[i].revents & POLLNVAL) {
 524                                 /*
 525                                  * Something bad has happened to this descri-
 526                                  * ptor. We can cause _poll() to ignore
 527                                  * it simply by using a negative fd.  We do that
 528                                  * rather than compacting the pfd[] and fdlist[]
 529                                  * arrays.
 530                                  */
 531                                 pfd[i].fd = -1;
 532                                 fds_found++;
 533                                 continue;
 534                         } else
 535                                 fds_found++;
 536 #ifdef RPC_DEBUG
 537                         fprintf(stderr, "response for %s\n",
 538                                 fdlist[i].nconf->nc_netid);
 539 #endif
 540                 try_again:
 541                         inlen = _recvfrom(fdlist[i].fd, inbuf, fdlist[i].dsize,
 542                             0, (struct sockaddr *)(void *)&fdlist[i].raddr,
 543                             &fdlist[i].asize);
 544                         if (inlen < 0) {
 545                                 if (errno == EINTR)
 546                                         goto try_again;
 547                                 warnx("clnt_bcast: Cannot receive reply to "
 548                                         "broadcast");
 549                                 stat = RPC_CANTRECV;
 550                                 continue;
 551                         }
 552                         if (inlen < sizeof (u_int32_t))
 553                                 continue; /* Drop that and go ahead */
 554                         /*
 555                          * see if reply transaction id matches sent id.
 556                          * If so, decode the results. If return id is xid + 1
 557                          * it was a PORTMAP reply
 558                          */
 559                         if (*((u_int32_t *)(void *)(inbuf)) ==
 560                             *((u_int32_t *)(void *)(outbuf))) {
 561                                 pmap_reply_flag = 0;
 562                                 msg.acpted_rply.ar_verf = _null_auth;
 563                                 msg.acpted_rply.ar_results.where =
 564                                         (caddr_t)(void *)&bres;
 565                                 msg.acpted_rply.ar_results.proc =
 566                                         (xdrproc_t)xdr_rpcb_rmtcallres;
 567 #ifdef PORTMAP
 568                         } else if (pmap_flag &&
 569                                 *((u_int32_t *)(void *)(inbuf)) ==
 570                                 *((u_int32_t *)(void *)(outbuf_pmap))) {
 571                                 pmap_reply_flag = 1;
 572                                 msg.acpted_rply.ar_verf = _null_auth;
 573                                 msg.acpted_rply.ar_results.where =
 574                                         (caddr_t)(void *)&bres_pmap;
 575                                 msg.acpted_rply.ar_results.proc =
 576                                         (xdrproc_t)xdr_rmtcallres;
 577 #endif                          /* PORTMAP */
 578                         } else
 579                                 continue;
 580                         xdrmem_create(xdrs, inbuf, (u_int)inlen, XDR_DECODE);
 581                         if (xdr_replymsg(xdrs, &msg)) {
 582                                 if ((msg.rm_reply.rp_stat == MSG_ACCEPTED) &&
 583                                     (msg.acpted_rply.ar_stat == SUCCESS)) {
 584                                         struct netbuf taddr, *np;
 585                                         struct sockaddr_in *sin;
 586
 587 #ifdef PORTMAP
 588                                         if (pmap_flag && pmap_reply_flag) {
 589                                                 sin = (struct sockaddr_in *)
 590                                                     (void *)&fdlist[i].raddr;
 591                                                 sin->sin_port =
 592                                                     htons((u_short)port);
 593                                                 taddr.len = taddr.maxlen =
 594                                                     fdlist[i].raddr.ss_len;
 595                                                 taddr.buf = &fdlist[i].raddr;
 596                                                 done = (*eachresult)(resultsp,
 597                                                     &taddr, fdlist[i].nconf);
 598                                         } else {
 599 #endif                          /* PORTMAP */
 600 #ifdef RPC_DEBUG
 601                                                 fprintf(stderr, "uaddr %s\n",
 602                                                     uaddrp);
 603 #endif
 604                                                 np = uaddr2taddr(
 605                                                     fdlist[i].nconf, uaddrp);
 606                                                 done = (*eachresult)(resultsp,
 607                                                     np, fdlist[i].nconf);
 608                                                 free(np);
 609 #ifdef PORTMAP
 610                                         }
 611 #endif                          /* PORTMAP */
 612                                 }
 613                                 /* otherwise, we just ignore the errors ... */
 614                         }
 615                         /* else some kind of deserialization problem ... */
 616
 617                         xdrs->x_op = XDR_FREE;
 618                         msg.acpted_rply.ar_results.proc = (xdrproc_t) xdr_void;
 619                         (void) xdr_replymsg(xdrs, &msg);
 620                         (void) (*xresults)(xdrs, resultsp);
 621                         XDR_DESTROY(xdrs);
 622                         if (done) {
 623                                 stat = RPC_SUCCESS;
 624                                 goto done_broad;
 625                         } else {
 626                                 goto recv_again;
 627                         }
 628                 }               /* The recv for loop */
 629         }                       /* The giant for loop */
 630
 631 done_broad:
 632         if (inbuf)
 633                 (void) free(inbuf);
 634         if (outbuf)
 635                 (void) free(outbuf);
 636 #ifdef PORTMAP
 637         if (outbuf_pmap)
 638                 (void) free(outbuf_pmap);
 639 #endif                          /* PORTMAP */
 640         for (i = 0; i < fdlistno; i++) {
 641                 (void)_close(fdlist[i].fd);
 642                 __rpc_freebroadifs(&fdlist[i].nal);
 643         }
 644         AUTH_DESTROY(sys_auth);
 645         (void) __rpc_endconf(handle);
 646
 647         return (stat);
 648 }
 649
 650
 651 enum clnt_stat
 652 rpc_broadcast(prog, vers, proc, xargs, argsp, xresults, resultsp,
 653                         eachresult, nettype)
 654         rpcprog_t       prog;           /* program number */
 655         rpcvers_t       vers;           /* version number */
 656         rpcproc_t       proc;           /* procedure number */
 657         xdrproc_t       xargs;          /* xdr routine for args */
 658         caddr_t         argsp;          /* pointer to args */
 659         xdrproc_t       xresults;       /* xdr routine for results */
 660         caddr_t         resultsp;       /* pointer to results */
 661         resultproc_t    eachresult;     /* call with each result obtained */
 662         const char              *nettype;       /* transport type */
 663 {
 664         enum clnt_stat  dummy;
 665
 666         dummy = rpc_broadcast_exp(prog, vers, proc, xargs, argsp,
 667                 xresults, resultsp, eachresult,
 668                 INITTIME, WAITTIME, nettype);
 669         return (dummy);
 670 }