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  * Copyright (c) 2009, Sun Microsystems, Inc.
   5  * 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 are met:
   9  * - Redistributions of source code must retain the above copyright notice,
  10  *   this list of conditions and the following disclaimer.
  11  * - Redistributions in binary form must reproduce the above copyright notice,
  12  *   this list of conditions and the following disclaimer in the documentation
  13  *   and/or other materials provided with the distribution.
  14  * - Neither the name of Sun Microsystems, Inc. nor the names of its
  15  *   contributors may be used to endorse or promote products derived
  16  *   from this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  19  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
  22  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  23  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  24  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  26  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  28  * POSSIBILITY OF SUCH DAMAGE.
  29  */
  30 /*
  31  * Copyright (c) 1986-1991 by Sun Microsystems Inc.
  32  */
  33
  34 #if defined(LIBC_SCCS) && !defined(lint)
  35 #ident  "@(#)clnt_bcast.c       1.18    94/05/03 SMI"
  36 static char sccsid[] = "@(#)clnt_bcast.c 1.15 89/04/21 Copyr 1988 Sun Micro";
  37 #endif
  38 #include <sys/cdefs.h>
  39 __FBSDID("$FreeBSD$");
  40
  41
  42 /*
  43  * clnt_bcast.c
  44  * Client interface to broadcast service.
  45  *
  46  * Copyright (C) 1988, Sun Microsystems, Inc.
  47  *
  48  * The following is kludged-up support for simple rpc broadcasts.
  49  * Someday a large, complicated system will replace these routines.
  50  */
  51
  52 #include "namespace.h"
  53 #include <sys/types.h>
  54 #include <sys/socket.h>
  55 #include <sys/queue.h>
  56 #include <net/if.h>
  57 #include <netinet/in.h>
  58 #include <ifaddrs.h>
  59 #include <sys/poll.h>
  60 #include <rpc/rpc.h>
  61 #ifdef PORTMAP
  62 #include <rpc/pmap_prot.h>
  63 #include <rpc/pmap_clnt.h>
  64 #include <rpc/pmap_rmt.h>
  65 #endif                          /* PORTMAP */
  66 #include <rpc/nettype.h>
  67 #include <arpa/inet.h>
  68 #ifdef RPC_DEBUG
  69 #include <stdio.h>
  70 #endif
  71 #include <errno.h>
  72 #include <stdlib.h>
  73 #include <unistd.h>
  74 #include <netdb.h>
  75 #include <err.h>
  76 #include <string.h>
  77 #include "un-namespace.h"
  78
  79 #include "rpc_com.h"
  80
  81 #define MAXBCAST 20     /* Max no of broadcasting transports */
  82 #define INITTIME 4000   /* Time to wait initially */
  83 #define WAITTIME 8000   /* Maximum time to wait */
  84
  85 /*
  86  * If nettype is NULL, it broadcasts on all the available
  87  * datagram_n transports. May potentially lead to broadacst storms
  88  * and hence should be used with caution, care and courage.
  89  *
  90  * The current parameter xdr packet size is limited by the max tsdu
  91  * size of the transport. If the max tsdu size of any transport is
  92  * smaller than the parameter xdr packet, then broadcast is not
  93  * sent on that transport.
  94  *
  95  * Also, the packet size should be less the packet size of
  96  * the data link layer (for ethernet it is 1400 bytes).  There is
  97  * no easy way to find out the max size of the data link layer and
  98  * we are assuming that the args would be smaller than that.
  99  *
 100  * The result size has to be smaller than the transport tsdu size.
 101  *
 102  * If PORTMAP has been defined, we send two packets for UDP, one for
 103  * rpcbind and one for portmap. For those machines which support
 104  * both rpcbind and portmap, it will cause them to reply twice, and
 105  * also here it will get two responses ... inefficient and clumsy.
 106  */
 107
 108 struct broadif {
 109         int index;
 110         struct sockaddr_storage broadaddr;
 111         TAILQ_ENTRY(broadif) link;
 112 };
 113
 114 typedef TAILQ_HEAD(, broadif) broadlist_t;
 115
 116 int __rpc_getbroadifs(int, int, int, broadlist_t *);
 117 void __rpc_freebroadifs(broadlist_t *);
 118 int __rpc_broadenable(int, int, struct broadif *);
 119
 120 int __rpc_lowvers = 0;
 121
 122 int
 123 __rpc_getbroadifs(int af, int proto, int socktype, broadlist_t *list)
 124 {
 125         int count = 0;
 126         struct broadif *bip;
 127         struct ifaddrs *ifap, *ifp;
 128 #ifdef INET6
 129         struct sockaddr_in6 *sin6;
 130 #endif
 131         struct sockaddr_in *sin;
 132         struct addrinfo hints, *res;
 133
 134         if (getifaddrs(&ifp) < 0)
 135                 return 0;
 136
 137         memset(&hints, 0, sizeof hints);
 138
 139         hints.ai_family = af;
 140         hints.ai_protocol = proto;
 141         hints.ai_socktype = socktype;
 142
 143         if (getaddrinfo(NULL, "sunrpc", &hints, &res) != 0) {
 144                 freeifaddrs(ifp);
 145                 return 0;
 146         }
 147
 148         for (ifap = ifp; ifap != NULL; ifap = ifap->ifa_next) {
 149                 if (ifap->ifa_addr->sa_family != af ||
 150                     !(ifap->ifa_flags & IFF_UP))
 151                         continue;
 152                 bip = (struct broadif *)malloc(sizeof *bip);
 153                 if (bip == NULL)
 154                         break;
 155                 bip->index = if_nametoindex(ifap->ifa_name);
 156                 if (
 157 #ifdef INET6
 158                 af != AF_INET6 &&
 159 #endif
 160                 (ifap->ifa_flags & IFF_BROADCAST) &&
 161                  ifap->ifa_broadaddr) {
 162                         memcpy(&bip->broadaddr, ifap->ifa_broadaddr,
 163                             (size_t)ifap->ifa_broadaddr->sa_len);
 164                         sin = (struct sockaddr_in *)(void *)&bip->broadaddr;
 165                         sin->sin_port =
 166                             ((struct sockaddr_in *)
 167                             (void *)res->ai_addr)->sin_port;
 168                 } else
 169 #ifdef INET6
 170                 if (af == AF_INET6 && (ifap->ifa_flags & IFF_MULTICAST)) {
 171                         sin6 = (struct sockaddr_in6 *)(void *)&bip->broadaddr;
 172                         inet_pton(af, RPCB_MULTICAST_ADDR, &sin6->sin6_addr);
 173                         sin6->sin6_family = af;
 174                         sin6->sin6_len = sizeof *sin6;
 175                         sin6->sin6_port =
 176                             ((struct sockaddr_in6 *)
 177                             (void *)res->ai_addr)->sin6_port;
 178                         sin6->sin6_scope_id = bip->index;
 179                 } else
 180 #endif
 181                 {
 182                         free(bip);
 183                         continue;
 184                 }
 185                 TAILQ_INSERT_TAIL(list, bip, link);
 186                 count++;
 187         }
 188         freeifaddrs(ifp);
 189         freeaddrinfo(res);
 190
 191         return count;
 192 }
 193
 194 void
 195 __rpc_freebroadifs(broadlist_t *list)
 196 {
 197         struct broadif *bip, *next;
 198
 199         bip = TAILQ_FIRST(list);
 200
 201         while (bip != NULL) {
 202                 next = TAILQ_NEXT(bip, link);
 203                 free(bip);
 204                 bip = next;
 205         }
 206 }
 207
 208 int
 209 /*ARGSUSED*/
 210 __rpc_broadenable(int af, int s, struct broadif *bip)
 211 {
 212         int o = 1;
 213
 214 #if 0
 215         if (af == AF_INET6) {
 216                 fprintf(stderr, "set v6 multicast if to %d\n", bip->index);
 217                 if (_setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_IF, &bip->index,
 218                     sizeof bip->index) < 0)
 219                         return -1;
 220         } else
 221 #endif
 222                 if (_setsockopt(s, SOL_SOCKET, SO_BROADCAST, &o, sizeof o) < 0)
 223                         return -1;
 224
 225         return 0;
 226 }
 227
 228 /*
 229  * rpc_broadcast_exp()
 230  *
 231  * prog      - program number
 232  * vers      - version number
 233  * proc      - procedure number
 234  * xargs     - xdr routine for args
 235  * argsp     - pointer to args
 236  * xresults  - xdr routine for results
 237  * resultsp  - pointer to results
 238  * eachresult - call with each result obtained
 239  * inittime  - how long to wait initially
 240  * waittime  - maximum time to wait
 241  * nettype   - transport type
 242  */
 243 enum clnt_stat
 244 rpc_broadcast_exp(rpcprog_t prog, rpcvers_t vers, rpcproc_t proc,
 245     xdrproc_t xargs, caddr_t argsp, xdrproc_t xresults, caddr_t resultsp,
 246     resultproc_t eachresult, int inittime, int waittime,
 247     const char *nettype)
 248 {
 249         enum clnt_stat  stat = RPC_SUCCESS; /* Return status */
 250         XDR             xdr_stream; /* XDR stream */
 251         XDR             *xdrs = &xdr_stream;
 252         struct rpc_msg  msg;    /* RPC message */
 253         struct timeval  t;
 254         char            *outbuf = NULL; /* Broadcast msg buffer */
 255         char            *inbuf = NULL; /* Reply buf */
 256         int             inlen;
 257         u_int           maxbufsize = 0;
 258         AUTH            *sys_auth = authunix_create_default();
 259         u_int           i;
 260         void            *handle;
 261         char            uaddress[1024]; /* A self imposed limit */
 262         char            *uaddrp = uaddress;
 263         int             pmap_reply_flag; /* reply recvd from PORTMAP */
 264         /* An array of all the suitable broadcast transports */
 265         struct {
 266                 int fd;         /* File descriptor */
 267                 int af;
 268                 int proto;
 269                 struct netconfig *nconf; /* Netconfig structure */
 270                 u_int asize;    /* Size of the addr buf */
 271                 u_int dsize;    /* Size of the data buf */
 272                 struct sockaddr_storage raddr; /* Remote address */
 273                 broadlist_t nal;
 274         } fdlist[MAXBCAST];
 275         struct pollfd pfd[MAXBCAST];
 276         size_t fdlistno = 0;
 277         struct r_rpcb_rmtcallargs barg; /* Remote arguments */
 278         struct r_rpcb_rmtcallres bres; /* Remote results */
 279         size_t outlen;
 280         struct netconfig *nconf;
 281         int msec;
 282         int pollretval;
 283         int fds_found;
 284
 285 #ifdef PORTMAP
 286         size_t outlen_pmap = 0;
 287         u_long port;            /* Remote port number */
 288         int pmap_flag = 0;      /* UDP exists ? */
 289         char *outbuf_pmap = NULL;
 290         struct rmtcallargs barg_pmap;   /* Remote arguments */
 291         struct rmtcallres bres_pmap; /* Remote results */
 292         u_int udpbufsz = 0;
 293 #endif                          /* PORTMAP */
 294
 295         if (sys_auth == NULL) {
 296                 return (RPC_SYSTEMERROR);
 297         }
 298         /*
 299          * initialization: create a fd, a broadcast address, and send the
 300          * request on the broadcast transport.
 301          * Listen on all of them and on replies, call the user supplied
 302          * function.
 303          */
 304
 305         if (nettype == NULL)
 306                 nettype = "datagram_n";
 307         if ((handle = __rpc_setconf(nettype)) == NULL) {
 308                 AUTH_DESTROY(sys_auth);
 309                 return (RPC_UNKNOWNPROTO);
 310         }
 311         while ((nconf = __rpc_getconf(handle)) != NULL) {
 312                 int fd;
 313                 struct __rpc_sockinfo si;
 314
 315                 if (nconf->nc_semantics != NC_TPI_CLTS)
 316                         continue;
 317                 if (fdlistno >= MAXBCAST)
 318                         break;  /* No more slots available */
 319                 if (!__rpc_nconf2sockinfo(nconf, &si))
 320                         continue;
 321
 322                 TAILQ_INIT(&fdlist[fdlistno].nal);
 323                 if (__rpc_getbroadifs(si.si_af, si.si_proto, si.si_socktype,
 324                     &fdlist[fdlistno].nal) == 0)
 325                         continue;
 326
 327                 fd = _socket(si.si_af, si.si_socktype, si.si_proto);
 328                 if (fd < 0) {
 329                         stat = RPC_CANTSEND;
 330                         continue;
 331                 }
 332                 fdlist[fdlistno].af = si.si_af;
 333                 fdlist[fdlistno].proto = si.si_proto;
 334                 fdlist[fdlistno].fd = fd;
 335                 fdlist[fdlistno].nconf = nconf;
 336                 fdlist[fdlistno].asize = __rpc_get_a_size(si.si_af);
 337                 pfd[fdlistno].events = POLLIN | POLLPRI |
 338                         POLLRDNORM | POLLRDBAND;
 339                 pfd[fdlistno].fd = fdlist[fdlistno].fd = fd;
 340                 fdlist[fdlistno].dsize = __rpc_get_t_size(si.si_af, si.si_proto,
 341                                                           0);
 342
 343                 if (maxbufsize <= fdlist[fdlistno].dsize)
 344                         maxbufsize = fdlist[fdlistno].dsize;
 345
 346 #ifdef PORTMAP
 347                 if (si.si_af == AF_INET && si.si_proto == IPPROTO_UDP) {
 348                         udpbufsz = fdlist[fdlistno].dsize;
 349                         outbuf_pmap = reallocf(outbuf_pmap, udpbufsz);
 350                         if (outbuf_pmap == NULL) {
 351                                 _close(fd);
 352                                 stat = RPC_SYSTEMERROR;
 353                                 goto done_broad;
 354                         }
 355                         pmap_flag = 1;
 356                 }
 357 #endif                          /* PORTMAP */
 358                 fdlistno++;
 359         }
 360
 361         if (fdlistno == 0) {
 362                 if (stat == RPC_SUCCESS)
 363                         stat = RPC_UNKNOWNPROTO;
 364                 goto done_broad;
 365         }
 366         if (maxbufsize == 0) {
 367                 if (stat == RPC_SUCCESS)
 368                         stat = RPC_CANTSEND;
 369                 goto done_broad;
 370         }
 371         inbuf = malloc(maxbufsize);
 372         outbuf = malloc(maxbufsize);
 373         if ((inbuf == NULL) || (outbuf == NULL)) {
 374                 stat = RPC_SYSTEMERROR;
 375                 goto done_broad;
 376         }
 377
 378         /* Serialize all the arguments which have to be sent */
 379         (void) gettimeofday(&t, NULL);
 380         msg.rm_xid = __RPC_GETXID(&t);
 381         msg.rm_direction = CALL;
 382         msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
 383         msg.rm_call.cb_prog = RPCBPROG;
 384         msg.rm_call.cb_vers = RPCBVERS;
 385         msg.rm_call.cb_proc = RPCBPROC_CALLIT;
 386         barg.prog = prog;
 387         barg.vers = vers;
 388         barg.proc = proc;
 389         barg.args.args_val = argsp;
 390         barg.xdr_args = xargs;
 391         bres.addr = uaddrp;
 392         bres.results.results_val = resultsp;
 393         bres.xdr_res = xresults;
 394         msg.rm_call.cb_cred = sys_auth->ah_cred;
 395         msg.rm_call.cb_verf = sys_auth->ah_verf;
 396         xdrmem_create(xdrs, outbuf, maxbufsize, XDR_ENCODE);
 397         if ((!xdr_callmsg(xdrs, &msg)) ||
 398             (!xdr_rpcb_rmtcallargs(xdrs,
 399             (struct rpcb_rmtcallargs *)(void *)&barg))) {
 400                 stat = RPC_CANTENCODEARGS;
 401                 goto done_broad;
 402         }
 403         outlen = xdr_getpos(xdrs);
 404         xdr_destroy(xdrs);
 405
 406 #ifdef PORTMAP
 407         /* Prepare the packet for version 2 PORTMAP */
 408         if (pmap_flag) {
 409                 msg.rm_xid++;   /* One way to distinguish */
 410                 msg.rm_call.cb_prog = PMAPPROG;
 411                 msg.rm_call.cb_vers = PMAPVERS;
 412                 msg.rm_call.cb_proc = PMAPPROC_CALLIT;
 413                 barg_pmap.prog = prog;
 414                 barg_pmap.vers = vers;
 415                 barg_pmap.proc = proc;
 416                 barg_pmap.args_ptr = argsp;
 417                 barg_pmap.xdr_args = xargs;
 418                 bres_pmap.port_ptr = &port;
 419                 bres_pmap.xdr_results = xresults;
 420                 bres_pmap.results_ptr = resultsp;
 421                 xdrmem_create(xdrs, outbuf_pmap, udpbufsz, XDR_ENCODE);
 422                 if ((! xdr_callmsg(xdrs, &msg)) ||
 423                     (! xdr_rmtcall_args(xdrs, &barg_pmap))) {
 424                         stat = RPC_CANTENCODEARGS;
 425                         goto done_broad;
 426                 }
 427                 outlen_pmap = xdr_getpos(xdrs);
 428                 xdr_destroy(xdrs);
 429         }
 430 #endif                          /* PORTMAP */
 431
 432         /*
 433          * Basic loop: broadcast the packets to transports which
 434          * support data packets of size such that one can encode
 435          * all the arguments.
 436          * Wait a while for response(s).
 437          * The response timeout grows larger per iteration.
 438          */
 439         for (msec = inittime; msec <= waittime; msec += msec) {
 440                 struct broadif *bip;
 441
 442                 /* Broadcast all the packets now */
 443                 for (i = 0; i < fdlistno; i++) {
 444                         if (fdlist[i].dsize < outlen) {
 445                                 stat = RPC_CANTSEND;
 446                                 continue;
 447                         }
 448                         for (bip = TAILQ_FIRST(&fdlist[i].nal); bip != NULL;
 449                              bip = TAILQ_NEXT(bip, link)) {
 450                                 void *addr;
 451
 452                                 addr = &bip->broadaddr;
 453
 454                                 __rpc_broadenable(fdlist[i].af, fdlist[i].fd,
 455                                     bip);
 456
 457                                 /*
 458                                  * Only use version 3 if lowvers is not set
 459                                  */
 460
 461                                 if (!__rpc_lowvers)
 462                                         if (_sendto(fdlist[i].fd, outbuf,
 463                                             outlen, 0, (struct sockaddr*)addr,
 464                                             (size_t)fdlist[i].asize) !=
 465                                             outlen) {
 466 #ifdef RPC_DEBUG
 467                                                 perror("sendto");
 468 #endif
 469                                                 warnx("clnt_bcast: cannot send "
 470                                                       "broadcast packet");
 471                                                 stat = RPC_CANTSEND;
 472                                                 continue;
 473                                         };
 474 #ifdef RPC_DEBUG
 475                                 if (!__rpc_lowvers)
 476                                         fprintf(stderr, "Broadcast packet sent "
 477                                                 "for %s\n",
 478                                                  fdlist[i].nconf->nc_netid);
 479 #endif
 480 #ifdef PORTMAP
 481                                 /*
 482                                  * Send the version 2 packet also
 483                                  * for UDP/IP
 484                                  */
 485                                 if (pmap_flag &&
 486                                     fdlist[i].proto == IPPROTO_UDP) {
 487                                         if (_sendto(fdlist[i].fd, outbuf_pmap,
 488                                             outlen_pmap, 0, addr,
 489                                             (size_t)fdlist[i].asize) !=
 490                                                 outlen_pmap) {
 491                                                 warnx("clnt_bcast: "
 492                                                     "Cannot send broadcast packet");
 493                                                 stat = RPC_CANTSEND;
 494                                                 continue;
 495                                         }
 496                                 }
 497 #ifdef RPC_DEBUG
 498                                 fprintf(stderr, "PMAP Broadcast packet "
 499                                         "sent for %s\n",
 500                                         fdlist[i].nconf->nc_netid);
 501 #endif
 502 #endif                          /* PORTMAP */
 503                         }
 504                         /* End for sending all packets on this transport */
 505                 }       /* End for sending on all transports */
 506
 507                 if (eachresult == NULL) {
 508                         stat = RPC_SUCCESS;
 509                         goto done_broad;
 510                 }
 511
 512                 /*
 513                  * Get all the replies from these broadcast requests
 514                  */
 515         recv_again:
 516
 517                 switch (pollretval = _poll(pfd, fdlistno, msec)) {
 518                 case 0:         /* timed out */
 519                         stat = RPC_TIMEDOUT;
 520                         continue;
 521                 case -1:        /* some kind of error - we ignore it */
 522                         goto recv_again;
 523                 }               /* end of poll results switch */
 524
 525                 for (i = fds_found = 0;
 526                      i < fdlistno && fds_found < pollretval; i++) {
 527                         bool_t done = FALSE;
 528
 529                         if (pfd[i].revents == 0)
 530                                 continue;
 531                         else if (pfd[i].revents & POLLNVAL) {
 532                                 /*
 533                                  * Something bad has happened to this descri-
 534                                  * ptor. We can cause _poll() to ignore
 535                                  * it simply by using a negative fd.  We do that
 536                                  * rather than compacting the pfd[] and fdlist[]
 537                                  * arrays.
 538                                  */
 539                                 pfd[i].fd = -1;
 540                                 fds_found++;
 541                                 continue;
 542                         } else
 543                                 fds_found++;
 544 #ifdef RPC_DEBUG
 545                         fprintf(stderr, "response for %s\n",
 546                                 fdlist[i].nconf->nc_netid);
 547 #endif
 548                 try_again:
 549                         inlen = _recvfrom(fdlist[i].fd, inbuf, fdlist[i].dsize,
 550                             0, (struct sockaddr *)(void *)&fdlist[i].raddr,
 551                             &fdlist[i].asize);
 552                         if (inlen < 0) {
 553                                 if (errno == EINTR)
 554                                         goto try_again;
 555                                 warnx("clnt_bcast: Cannot receive reply to "
 556                                         "broadcast");
 557                                 stat = RPC_CANTRECV;
 558                                 continue;
 559                         }
 560                         if (inlen < sizeof (u_int32_t))
 561                                 continue; /* Drop that and go ahead */
 562                         /*
 563                          * see if reply transaction id matches sent id.
 564                          * If so, decode the results. If return id is xid + 1
 565                          * it was a PORTMAP reply
 566                          */
 567                         if (*((u_int32_t *)(void *)(inbuf)) ==
 568                             *((u_int32_t *)(void *)(outbuf))) {
 569                                 pmap_reply_flag = 0;
 570                                 msg.acpted_rply.ar_verf = _null_auth;
 571                                 msg.acpted_rply.ar_results.where =
 572                                         (caddr_t)(void *)&bres;
 573                                 msg.acpted_rply.ar_results.proc =
 574                                         (xdrproc_t)xdr_rpcb_rmtcallres;
 575 #ifdef PORTMAP
 576                         } else if (pmap_flag &&
 577                                 *((u_int32_t *)(void *)(inbuf)) ==
 578                                 *((u_int32_t *)(void *)(outbuf_pmap))) {
 579                                 pmap_reply_flag = 1;
 580                                 msg.acpted_rply.ar_verf = _null_auth;
 581                                 msg.acpted_rply.ar_results.where =
 582                                         (caddr_t)(void *)&bres_pmap;
 583                                 msg.acpted_rply.ar_results.proc =
 584                                         (xdrproc_t)xdr_rmtcallres;
 585 #endif                          /* PORTMAP */
 586                         } else
 587                                 continue;
 588                         xdrmem_create(xdrs, inbuf, (u_int)inlen, XDR_DECODE);
 589                         if (xdr_replymsg(xdrs, &msg)) {
 590                                 if ((msg.rm_reply.rp_stat == MSG_ACCEPTED) &&
 591                                     (msg.acpted_rply.ar_stat == SUCCESS)) {
 592                                         struct netbuf taddr, *np;
 593                                         struct sockaddr_in *sin;
 594
 595 #ifdef PORTMAP
 596                                         if (pmap_flag && pmap_reply_flag) {
 597                                                 sin = (struct sockaddr_in *)
 598                                                     (void *)&fdlist[i].raddr;
 599                                                 sin->sin_port =
 600                                                     htons((u_short)port);
 601                                                 taddr.len = taddr.maxlen =
 602                                                     fdlist[i].raddr.ss_len;
 603                                                 taddr.buf = &fdlist[i].raddr;
 604                                                 done = (*eachresult)(resultsp,
 605                                                     &taddr, fdlist[i].nconf);
 606                                         } else {
 607 #endif                          /* PORTMAP */
 608 #ifdef RPC_DEBUG
 609                                                 fprintf(stderr, "uaddr %s\n",
 610                                                     uaddrp);
 611 #endif
 612                                                 np = uaddr2taddr(
 613                                                     fdlist[i].nconf, uaddrp);
 614                                                 done = (*eachresult)(resultsp,
 615                                                     np, fdlist[i].nconf);
 616                                                 free(np);
 617 #ifdef PORTMAP
 618                                         }
 619 #endif                          /* PORTMAP */
 620                                 }
 621                                 /* otherwise, we just ignore the errors ... */
 622                         }
 623                         /* else some kind of deserialization problem ... */
 624
 625                         xdrs->x_op = XDR_FREE;
 626                         msg.acpted_rply.ar_results.proc = (xdrproc_t) xdr_void;
 627                         (void) xdr_replymsg(xdrs, &msg);
 628                         (void) (*xresults)(xdrs, resultsp);
 629                         XDR_DESTROY(xdrs);
 630                         if (done) {
 631                                 stat = RPC_SUCCESS;
 632                                 goto done_broad;
 633                         } else {
 634                                 goto recv_again;
 635                         }
 636                 }               /* The recv for loop */
 637         }                       /* The giant for loop */
 638
 639 done_broad:
 640         free(inbuf);
 641         free(outbuf);
 642 #ifdef PORTMAP
 643         free(outbuf_pmap);
 644 #endif                          /* PORTMAP */
 645         for (i = 0; i < fdlistno; i++) {
 646                 (void)_close(fdlist[i].fd);
 647                 __rpc_freebroadifs(&fdlist[i].nal);
 648         }
 649         AUTH_DESTROY(sys_auth);
 650         (void) __rpc_endconf(handle);
 651
 652         return (stat);
 653 }
 654
 655 /*
 656  * rpc_broadcast()
 657  *
 658  * prog       - program number
 659  * vers       - version number
 660  * proc       - procedure number
 661  * xargs      - xdr routine for args
 662  * argsp      - pointer to args
 663  * xresults   - xdr routine for results
 664  * resultsp   - pointer to results
 665  * eachresult - call with each result obtained
 666  * nettype    - transport type
 667  */
 668 enum clnt_stat
 669 rpc_broadcast(rpcprog_t prog, rpcvers_t vers, rpcproc_t proc, xdrproc_t xargs,
 670     caddr_t argsp, xdrproc_t xresults, caddr_t resultsp,
 671     resultproc_t eachresult, const char *nettype)
 672 {
 673         enum clnt_stat  dummy;
 674
 675         dummy = rpc_broadcast_exp(prog, vers, proc, xargs, argsp,
 676                 xresults, resultsp, eachresult,
 677                 INITTIME, WAITTIME, nettype);
 678         return (dummy);
 679 }