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  * SPDX-License-Identifier: BSD-3-Clause
   5  *
   6  * Copyright (c) 2009, Sun Microsystems, Inc.
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions are met:
  11  * - Redistributions of source code must retain the above copyright notice,
  12  *   this list of conditions and the following disclaimer.
  13  * - Redistributions in binary form must reproduce the above copyright notice,
  14  *   this list of conditions and the following disclaimer in the documentation
  15  *   and/or other materials provided with the distribution.
  16  * - Neither the name of Sun Microsystems, Inc. nor the names of its
  17  *   contributors may be used to endorse or promote products derived
  18  *   from this software without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  21  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
  24  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  30  * POSSIBILITY OF SUCH DAMAGE.
  31  */
  32 /*
  33  * Copyright (c) 1986-1991 by Sun Microsystems Inc.
  34  */
  35
  36 #if defined(LIBC_SCCS) && !defined(lint)
  37 #ident  "@(#)clnt_bcast.c       1.18    94/05/03 SMI"
  38 static char sccsid[] = "@(#)clnt_bcast.c 1.15 89/04/21 Copyr 1988 Sun Micro";
  39 #endif
  40 #include <sys/cdefs.h>
  41 __FBSDID("$FreeBSD$");
  42
  43
  44 /*
  45  * clnt_bcast.c
  46  * Client interface to broadcast service.
  47  *
  48  * Copyright (C) 1988, Sun Microsystems, Inc.
  49  *
  50  * The following is kludged-up support for simple rpc broadcasts.
  51  * Someday a large, complicated system will replace these routines.
  52  */
  53
  54 #include "namespace.h"
  55 #include <sys/types.h>
  56 #include <sys/socket.h>
  57 #include <sys/queue.h>
  58 #include <net/if.h>
  59 #include <netinet/in.h>
  60 #include <ifaddrs.h>
  61 #include <sys/poll.h>
  62 #include <rpc/rpc.h>
  63 #ifdef PORTMAP
  64 #include <rpc/pmap_prot.h>
  65 #include <rpc/pmap_clnt.h>
  66 #include <rpc/pmap_rmt.h>
  67 #endif                          /* PORTMAP */
  68 #include <rpc/nettype.h>
  69 #include <arpa/inet.h>
  70 #ifdef RPC_DEBUG
  71 #include <stdio.h>
  72 #endif
  73 #include <errno.h>
  74 #include <stdlib.h>
  75 #include <unistd.h>
  76 #include <netdb.h>
  77 #include <err.h>
  78 #include <string.h>
  79 #include "un-namespace.h"
  80
  81 #include "rpc_com.h"
  82
  83 #define MAXBCAST 20     /* Max no of broadcasting transports */
  84 #define INITTIME 4000   /* Time to wait initially */
  85 #define WAITTIME 8000   /* Maximum time to wait */
  86
  87 /*
  88  * If nettype is NULL, it broadcasts on all the available
  89  * datagram_n transports. May potentially lead to broadacst storms
  90  * and hence should be used with caution, care and courage.
  91  *
  92  * The current parameter xdr packet size is limited by the max tsdu
  93  * size of the transport. If the max tsdu size of any transport is
  94  * smaller than the parameter xdr packet, then broadcast is not
  95  * sent on that transport.
  96  *
  97  * Also, the packet size should be less the packet size of
  98  * the data link layer (for ethernet it is 1400 bytes).  There is
  99  * no easy way to find out the max size of the data link layer and
 100  * we are assuming that the args would be smaller than that.
 101  *
 102  * The result size has to be smaller than the transport tsdu size.
 103  *
 104  * If PORTMAP has been defined, we send two packets for UDP, one for
 105  * rpcbind and one for portmap. For those machines which support
 106  * both rpcbind and portmap, it will cause them to reply twice, and
 107  * also here it will get two responses ... inefficient and clumsy.
 108  */
 109
 110 struct broadif {
 111         int index;
 112         struct sockaddr_storage broadaddr;
 113         TAILQ_ENTRY(broadif) link;
 114 };
 115
 116 typedef TAILQ_HEAD(, broadif) broadlist_t;
 117
 118 int __rpc_getbroadifs(int, int, int, broadlist_t *);
 119 void __rpc_freebroadifs(broadlist_t *);
 120 int __rpc_broadenable(int, int, struct broadif *);
 121
 122 int __rpc_lowvers = 0;
 123
 124 int
 125 __rpc_getbroadifs(int af, int proto, int socktype, broadlist_t *list)
 126 {
 127         int count = 0;
 128         struct broadif *bip;
 129         struct ifaddrs *ifap, *ifp;
 130 #ifdef INET6
 131         struct sockaddr_in6 *sin6;
 132 #endif
 133         struct sockaddr_in *sin;
 134         struct addrinfo hints, *res;
 135
 136         if (getifaddrs(&ifp) < 0)
 137                 return 0;
 138
 139         memset(&hints, 0, sizeof hints);
 140
 141         hints.ai_family = af;
 142         hints.ai_protocol = proto;
 143         hints.ai_socktype = socktype;
 144
 145         if (getaddrinfo(NULL, "sunrpc", &hints, &res) != 0) {
 146                 freeifaddrs(ifp);
 147                 return 0;
 148         }
 149
 150         for (ifap = ifp; ifap != NULL; ifap = ifap->ifa_next) {
 151                 if (ifap->ifa_addr->sa_family != af ||
 152                     !(ifap->ifa_flags & IFF_UP))
 153                         continue;
 154                 bip = (struct broadif *)malloc(sizeof *bip);
 155                 if (bip == NULL)
 156                         break;
 157                 bip->index = if_nametoindex(ifap->ifa_name);
 158                 if (
 159 #ifdef INET6
 160                 af != AF_INET6 &&
 161 #endif
 162                 (ifap->ifa_flags & IFF_BROADCAST) &&
 163                  ifap->ifa_broadaddr) {
 164                         memcpy(&bip->broadaddr, ifap->ifa_broadaddr,
 165                             (size_t)ifap->ifa_broadaddr->sa_len);
 166                         sin = (struct sockaddr_in *)(void *)&bip->broadaddr;
 167                         sin->sin_port =
 168                             ((struct sockaddr_in *)
 169                             (void *)res->ai_addr)->sin_port;
 170                 } else
 171 #ifdef INET6
 172                 if (af == AF_INET6 && (ifap->ifa_flags & IFF_MULTICAST)) {
 173                         sin6 = (struct sockaddr_in6 *)(void *)&bip->broadaddr;
 174                         inet_pton(af, RPCB_MULTICAST_ADDR, &sin6->sin6_addr);
 175                         sin6->sin6_family = af;
 176                         sin6->sin6_len = sizeof *sin6;
 177                         sin6->sin6_port =
 178                             ((struct sockaddr_in6 *)
 179                             (void *)res->ai_addr)->sin6_port;
 180                         sin6->sin6_scope_id = bip->index;
 181                 } else
 182 #endif
 183                 {
 184                         free(bip);
 185                         continue;
 186                 }
 187                 TAILQ_INSERT_TAIL(list, bip, link);
 188                 count++;
 189         }
 190         freeifaddrs(ifp);
 191         freeaddrinfo(res);
 192
 193         return count;
 194 }
 195
 196 void
 197 __rpc_freebroadifs(broadlist_t *list)
 198 {
 199         struct broadif *bip, *next;
 200
 201         bip = TAILQ_FIRST(list);
 202
 203         while (bip != NULL) {
 204                 next = TAILQ_NEXT(bip, link);
 205                 free(bip);
 206                 bip = next;
 207         }
 208 }
 209
 210 int
 211 /*ARGSUSED*/
 212 __rpc_broadenable(int af, int s, struct broadif *bip)
 213 {
 214         int o = 1;
 215
 216 #if 0
 217         if (af == AF_INET6) {
 218                 fprintf(stderr, "set v6 multicast if to %d\n", bip->index);
 219                 if (_setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_IF, &bip->index,
 220                     sizeof bip->index) < 0)
 221                         return -1;
 222         } else
 223 #endif
 224                 if (_setsockopt(s, SOL_SOCKET, SO_BROADCAST, &o, sizeof o) < 0)
 225                         return -1;
 226
 227         return 0;
 228 }
 229
 230 /*
 231  * rpc_broadcast_exp()
 232  *
 233  * prog      - program number
 234  * vers      - version number
 235  * proc      - procedure number
 236  * xargs     - xdr routine for args
 237  * argsp     - pointer to args
 238  * xresults  - xdr routine for results
 239  * resultsp  - pointer to results
 240  * eachresult - call with each result obtained
 241  * inittime  - how long to wait initially
 242  * waittime  - maximum time to wait
 243  * nettype   - transport type
 244  */
 245 enum clnt_stat
 246 rpc_broadcast_exp(rpcprog_t prog, rpcvers_t vers, rpcproc_t proc,
 247     xdrproc_t xargs, caddr_t argsp, xdrproc_t xresults, caddr_t resultsp,
 248     resultproc_t eachresult, int inittime, int waittime,
 249     const char *nettype)
 250 {
 251         enum clnt_stat  stat = RPC_SUCCESS; /* Return status */
 252         XDR             xdr_stream; /* XDR stream */
 253         XDR             *xdrs = &xdr_stream;
 254         struct rpc_msg  msg;    /* RPC message */
 255         struct timeval  t;
 256         char            *outbuf = NULL; /* Broadcast msg buffer */
 257         char            *inbuf = NULL; /* Reply buf */
 258         int             inlen;
 259         u_int           maxbufsize = 0;
 260         AUTH            *sys_auth = authunix_create_default();
 261         u_int           i;
 262         void            *handle;
 263         char            uaddress[1024]; /* A self imposed limit */
 264         char            *uaddrp = uaddress;
 265         int             pmap_reply_flag; /* reply recvd from PORTMAP */
 266         /* An array of all the suitable broadcast transports */
 267         struct {
 268                 int fd;         /* File descriptor */
 269                 int af;
 270                 int proto;
 271                 struct netconfig *nconf; /* Netconfig structure */
 272                 u_int asize;    /* Size of the addr buf */
 273                 u_int dsize;    /* Size of the data buf */
 274                 struct sockaddr_storage raddr; /* Remote address */
 275                 broadlist_t nal;
 276         } fdlist[MAXBCAST];
 277         struct pollfd pfd[MAXBCAST];
 278         size_t fdlistno = 0;
 279         struct r_rpcb_rmtcallargs barg; /* Remote arguments */
 280         struct r_rpcb_rmtcallres bres; /* Remote results */
 281         size_t outlen;
 282         struct netconfig *nconf;
 283         int msec;
 284         int pollretval;
 285         int fds_found;
 286
 287 #ifdef PORTMAP
 288         size_t outlen_pmap = 0;
 289         u_long port;            /* Remote port number */
 290         int pmap_flag = 0;      /* UDP exists ? */
 291         char *outbuf_pmap = NULL;
 292         struct rmtcallargs barg_pmap;   /* Remote arguments */
 293         struct rmtcallres bres_pmap; /* Remote results */
 294         u_int udpbufsz = 0;
 295 #endif                          /* PORTMAP */
 296
 297         if (sys_auth == NULL) {
 298                 return (RPC_SYSTEMERROR);
 299         }
 300         /*
 301          * initialization: create a fd, a broadcast address, and send the
 302          * request on the broadcast transport.
 303          * Listen on all of them and on replies, call the user supplied
 304          * function.
 305          */
 306
 307         if (nettype == NULL)
 308                 nettype = "datagram_n";
 309         if ((handle = __rpc_setconf(nettype)) == NULL) {
 310                 AUTH_DESTROY(sys_auth);
 311                 return (RPC_UNKNOWNPROTO);
 312         }
 313         while ((nconf = __rpc_getconf(handle)) != NULL) {
 314                 int fd;
 315                 struct __rpc_sockinfo si;
 316
 317                 if (nconf->nc_semantics != NC_TPI_CLTS)
 318                         continue;
 319                 if (fdlistno >= MAXBCAST)
 320                         break;  /* No more slots available */
 321                 if (!__rpc_nconf2sockinfo(nconf, &si))
 322                         continue;
 323
 324                 TAILQ_INIT(&fdlist[fdlistno].nal);
 325                 if (__rpc_getbroadifs(si.si_af, si.si_proto, si.si_socktype,
 326                     &fdlist[fdlistno].nal) == 0)
 327                         continue;
 328
 329                 fd = _socket(si.si_af, si.si_socktype, si.si_proto);
 330                 if (fd < 0) {
 331                         stat = RPC_CANTSEND;
 332                         continue;
 333                 }
 334                 fdlist[fdlistno].af = si.si_af;
 335                 fdlist[fdlistno].proto = si.si_proto;
 336                 fdlist[fdlistno].fd = fd;
 337                 fdlist[fdlistno].nconf = nconf;
 338                 fdlist[fdlistno].asize = __rpc_get_a_size(si.si_af);
 339                 pfd[fdlistno].events = POLLIN | POLLPRI |
 340                         POLLRDNORM | POLLRDBAND;
 341                 pfd[fdlistno].fd = fdlist[fdlistno].fd = fd;
 342                 fdlist[fdlistno].dsize = __rpc_get_t_size(si.si_af, si.si_proto,
 343                                                           0);
 344
 345                 if (maxbufsize <= fdlist[fdlistno].dsize)
 346                         maxbufsize = fdlist[fdlistno].dsize;
 347
 348 #ifdef PORTMAP
 349                 if (si.si_af == AF_INET && si.si_proto == IPPROTO_UDP) {
 350                         udpbufsz = fdlist[fdlistno].dsize;
 351                         outbuf_pmap = reallocf(outbuf_pmap, udpbufsz);
 352                         if (outbuf_pmap == NULL) {
 353                                 _close(fd);
 354                                 stat = RPC_SYSTEMERROR;
 355                                 goto done_broad;
 356                         }
 357                         pmap_flag = 1;
 358                 }
 359 #endif                          /* PORTMAP */
 360                 fdlistno++;
 361         }
 362
 363         if (fdlistno == 0) {
 364                 if (stat == RPC_SUCCESS)
 365                         stat = RPC_UNKNOWNPROTO;
 366                 goto done_broad;
 367         }
 368         if (maxbufsize == 0) {
 369                 if (stat == RPC_SUCCESS)
 370                         stat = RPC_CANTSEND;
 371                 goto done_broad;
 372         }
 373         inbuf = malloc(maxbufsize);
 374         outbuf = malloc(maxbufsize);
 375         if ((inbuf == NULL) || (outbuf == NULL)) {
 376                 stat = RPC_SYSTEMERROR;
 377                 goto done_broad;
 378         }
 379
 380         /* Serialize all the arguments which have to be sent */
 381         (void) gettimeofday(&t, NULL);
 382         msg.rm_xid = __RPC_GETXID(&t);
 383         msg.rm_direction = CALL;
 384         msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
 385         msg.rm_call.cb_prog = RPCBPROG;
 386         msg.rm_call.cb_vers = RPCBVERS;
 387         msg.rm_call.cb_proc = RPCBPROC_CALLIT;
 388         barg.prog = prog;
 389         barg.vers = vers;
 390         barg.proc = proc;
 391         barg.args.args_val = argsp;
 392         barg.xdr_args = xargs;
 393         bres.addr = uaddrp;
 394         bres.results.results_val = resultsp;
 395         bres.xdr_res = xresults;
 396         msg.rm_call.cb_cred = sys_auth->ah_cred;
 397         msg.rm_call.cb_verf = sys_auth->ah_verf;
 398         xdrmem_create(xdrs, outbuf, maxbufsize, XDR_ENCODE);
 399         if ((!xdr_callmsg(xdrs, &msg)) ||
 400             (!xdr_rpcb_rmtcallargs(xdrs,
 401             (struct rpcb_rmtcallargs *)(void *)&barg))) {
 402                 stat = RPC_CANTENCODEARGS;
 403                 goto done_broad;
 404         }
 405         outlen = xdr_getpos(xdrs);
 406         xdr_destroy(xdrs);
 407
 408 #ifdef PORTMAP
 409         /* Prepare the packet for version 2 PORTMAP */
 410         if (pmap_flag) {
 411                 msg.rm_xid++;   /* One way to distinguish */
 412                 msg.rm_call.cb_prog = PMAPPROG;
 413                 msg.rm_call.cb_vers = PMAPVERS;
 414                 msg.rm_call.cb_proc = PMAPPROC_CALLIT;
 415                 barg_pmap.prog = prog;
 416                 barg_pmap.vers = vers;
 417                 barg_pmap.proc = proc;
 418                 barg_pmap.args_ptr = argsp;
 419                 barg_pmap.xdr_args = xargs;
 420                 bres_pmap.port_ptr = &port;
 421                 bres_pmap.xdr_results = xresults;
 422                 bres_pmap.results_ptr = resultsp;
 423                 xdrmem_create(xdrs, outbuf_pmap, udpbufsz, XDR_ENCODE);
 424                 if ((! xdr_callmsg(xdrs, &msg)) ||
 425                     (! xdr_rmtcall_args(xdrs, &barg_pmap))) {
 426                         stat = RPC_CANTENCODEARGS;
 427                         goto done_broad;
 428                 }
 429                 outlen_pmap = xdr_getpos(xdrs);
 430                 xdr_destroy(xdrs);
 431         }
 432 #endif                          /* PORTMAP */
 433
 434         /*
 435          * Basic loop: broadcast the packets to transports which
 436          * support data packets of size such that one can encode
 437          * all the arguments.
 438          * Wait a while for response(s).
 439          * The response timeout grows larger per iteration.
 440          */
 441         for (msec = inittime; msec <= waittime; msec += msec) {
 442                 struct broadif *bip;
 443
 444                 /* Broadcast all the packets now */
 445                 for (i = 0; i < fdlistno; i++) {
 446                         if (fdlist[i].dsize < outlen) {
 447                                 stat = RPC_CANTSEND;
 448                                 continue;
 449                         }
 450                         for (bip = TAILQ_FIRST(&fdlist[i].nal); bip != NULL;
 451                              bip = TAILQ_NEXT(bip, link)) {
 452                                 void *addr;
 453
 454                                 addr = &bip->broadaddr;
 455
 456                                 __rpc_broadenable(fdlist[i].af, fdlist[i].fd,
 457                                     bip);
 458
 459                                 /*
 460                                  * Only use version 3 if lowvers is not set
 461                                  */
 462
 463                                 if (!__rpc_lowvers)
 464                                         if (_sendto(fdlist[i].fd, outbuf,
 465                                             outlen, 0, (struct sockaddr*)addr,
 466                                             (size_t)fdlist[i].asize) !=
 467                                             outlen) {
 468 #ifdef RPC_DEBUG
 469                                                 perror("sendto");
 470 #endif
 471                                                 warnx("clnt_bcast: cannot send "
 472                                                       "broadcast packet");
 473                                                 stat = RPC_CANTSEND;
 474                                                 continue;
 475                                         }
 476 #ifdef RPC_DEBUG
 477                                 if (!__rpc_lowvers)
 478                                         fprintf(stderr, "Broadcast packet sent "
 479                                                 "for %s\n",
 480                                                  fdlist[i].nconf->nc_netid);
 481 #endif
 482 #ifdef PORTMAP
 483                                 /*
 484                                  * Send the version 2 packet also
 485                                  * for UDP/IP
 486                                  */
 487                                 if (pmap_flag &&
 488                                     fdlist[i].proto == IPPROTO_UDP) {
 489                                         if (_sendto(fdlist[i].fd, outbuf_pmap,
 490                                             outlen_pmap, 0, addr,
 491                                             (size_t)fdlist[i].asize) !=
 492                                                 outlen_pmap) {
 493                                                 warnx("clnt_bcast: "
 494                                                     "Cannot send broadcast packet");
 495                                                 stat = RPC_CANTSEND;
 496                                                 continue;
 497                                         }
 498                                 }
 499 #ifdef RPC_DEBUG
 500                                 fprintf(stderr, "PMAP Broadcast packet "
 501                                         "sent for %s\n",
 502                                         fdlist[i].nconf->nc_netid);
 503 #endif
 504 #endif                          /* PORTMAP */
 505                         }
 506                         /* End for sending all packets on this transport */
 507                 }       /* End for sending on all transports */
 508
 509                 if (eachresult == NULL) {
 510                         stat = RPC_SUCCESS;
 511                         goto done_broad;
 512                 }
 513
 514                 /*
 515                  * Get all the replies from these broadcast requests
 516                  */
 517         recv_again:
 518
 519                 switch (pollretval = _poll(pfd, fdlistno, msec)) {
 520                 case 0:         /* timed out */
 521                         stat = RPC_TIMEDOUT;
 522                         continue;
 523                 case -1:        /* some kind of error - we ignore it */
 524                         goto recv_again;
 525                 }               /* end of poll results switch */
 526
 527                 for (i = fds_found = 0;
 528                      i < fdlistno && fds_found < pollretval; i++) {
 529                         bool_t done = FALSE;
 530
 531                         if (pfd[i].revents == 0)
 532                                 continue;
 533                         else if (pfd[i].revents & POLLNVAL) {
 534                                 /*
 535                                  * Something bad has happened to this descri-
 536                                  * ptor. We can cause _poll() to ignore
 537                                  * it simply by using a negative fd.  We do that
 538                                  * rather than compacting the pfd[] and fdlist[]
 539                                  * arrays.
 540                                  */
 541                                 pfd[i].fd = -1;
 542                                 fds_found++;
 543                                 continue;
 544                         } else
 545                                 fds_found++;
 546 #ifdef RPC_DEBUG
 547                         fprintf(stderr, "response for %s\n",
 548                                 fdlist[i].nconf->nc_netid);
 549 #endif
 550                 try_again:
 551                         inlen = _recvfrom(fdlist[i].fd, inbuf, fdlist[i].dsize,
 552                             0, (struct sockaddr *)(void *)&fdlist[i].raddr,
 553                             &fdlist[i].asize);
 554                         if (inlen < 0) {
 555                                 if (errno == EINTR)
 556                                         goto try_again;
 557                                 warnx("clnt_bcast: Cannot receive reply to "
 558                                         "broadcast");
 559                                 stat = RPC_CANTRECV;
 560                                 continue;
 561                         }
 562                         if (inlen < sizeof (u_int32_t))
 563                                 continue; /* Drop that and go ahead */
 564                         /*
 565                          * see if reply transaction id matches sent id.
 566                          * If so, decode the results. If return id is xid + 1
 567                          * it was a PORTMAP reply
 568                          */
 569                         if (*((u_int32_t *)(void *)(inbuf)) ==
 570                             *((u_int32_t *)(void *)(outbuf))) {
 571                                 pmap_reply_flag = 0;
 572                                 msg.acpted_rply.ar_verf = _null_auth;
 573                                 msg.acpted_rply.ar_results.where =
 574                                         (caddr_t)(void *)&bres;
 575                                 msg.acpted_rply.ar_results.proc =
 576                                         (xdrproc_t)xdr_rpcb_rmtcallres;
 577 #ifdef PORTMAP
 578                         } else if (pmap_flag &&
 579                                 *((u_int32_t *)(void *)(inbuf)) ==
 580                                 *((u_int32_t *)(void *)(outbuf_pmap))) {
 581                                 pmap_reply_flag = 1;
 582                                 msg.acpted_rply.ar_verf = _null_auth;
 583                                 msg.acpted_rply.ar_results.where =
 584                                         (caddr_t)(void *)&bres_pmap;
 585                                 msg.acpted_rply.ar_results.proc =
 586                                         (xdrproc_t)xdr_rmtcallres;
 587 #endif                          /* PORTMAP */
 588                         } else
 589                                 continue;
 590                         xdrmem_create(xdrs, inbuf, (u_int)inlen, XDR_DECODE);
 591                         if (xdr_replymsg(xdrs, &msg)) {
 592                                 if ((msg.rm_reply.rp_stat == MSG_ACCEPTED) &&
 593                                     (msg.acpted_rply.ar_stat == SUCCESS)) {
 594                                         struct netbuf taddr, *np;
 595                                         struct sockaddr_in *sin;
 596
 597 #ifdef PORTMAP
 598                                         if (pmap_flag && pmap_reply_flag) {
 599                                                 sin = (struct sockaddr_in *)
 600                                                     (void *)&fdlist[i].raddr;
 601                                                 sin->sin_port =
 602                                                     htons((u_short)port);
 603                                                 taddr.len = taddr.maxlen =
 604                                                     fdlist[i].raddr.ss_len;
 605                                                 taddr.buf = &fdlist[i].raddr;
 606                                                 done = (*eachresult)(resultsp,
 607                                                     &taddr, fdlist[i].nconf);
 608                                         } else {
 609 #endif                          /* PORTMAP */
 610 #ifdef RPC_DEBUG
 611                                                 fprintf(stderr, "uaddr %s\n",
 612                                                     uaddrp);
 613 #endif
 614                                                 np = uaddr2taddr(
 615                                                     fdlist[i].nconf, uaddrp);
 616                                                 done = (*eachresult)(resultsp,
 617                                                     np, fdlist[i].nconf);
 618                                                 free(np);
 619 #ifdef PORTMAP
 620                                         }
 621 #endif                          /* PORTMAP */
 622                                 }
 623                                 /* otherwise, we just ignore the errors ... */
 624                         }
 625                         /* else some kind of deserialization problem ... */
 626
 627                         xdrs->x_op = XDR_FREE;
 628                         msg.acpted_rply.ar_results.proc = (xdrproc_t) xdr_void;
 629                         (void) xdr_replymsg(xdrs, &msg);
 630                         (void) (*xresults)(xdrs, resultsp);
 631                         XDR_DESTROY(xdrs);
 632                         if (done) {
 633                                 stat = RPC_SUCCESS;
 634                                 goto done_broad;
 635                         } else {
 636                                 goto recv_again;
 637                         }
 638                 }               /* The recv for loop */
 639         }                       /* The giant for loop */
 640
 641 done_broad:
 642         free(inbuf);
 643         free(outbuf);
 644 #ifdef PORTMAP
 645         free(outbuf_pmap);
 646 #endif                          /* PORTMAP */
 647         for (i = 0; i < fdlistno; i++) {
 648                 (void)_close(fdlist[i].fd);
 649                 __rpc_freebroadifs(&fdlist[i].nal);
 650         }
 651         AUTH_DESTROY(sys_auth);
 652         (void) __rpc_endconf(handle);
 653
 654         return (stat);
 655 }
 656
 657 /*
 658  * rpc_broadcast()
 659  *
 660  * prog       - program number
 661  * vers       - version number
 662  * proc       - procedure number
 663  * xargs      - xdr routine for args
 664  * argsp      - pointer to args
 665  * xresults   - xdr routine for results
 666  * resultsp   - pointer to results
 667  * eachresult - call with each result obtained
 668  * nettype    - transport type
 669  */
 670 enum clnt_stat
 671 rpc_broadcast(rpcprog_t prog, rpcvers_t vers, rpcproc_t proc, xdrproc_t xargs,
 672     caddr_t argsp, xdrproc_t xresults, caddr_t resultsp,
 673     resultproc_t eachresult, const char *nettype)
 674 {
 675         enum clnt_stat  dummy;
 676
 677         dummy = rpc_broadcast_exp(prog, vers, proc, xargs, argsp,
 678                 xresults, resultsp, eachresult,
 679                 INITTIME, WAITTIME, nettype);
 680         return (dummy);
 681 }