src/clnt_bcast.c

   1 /*
   2  * Copyright (c) 2009, Sun Microsystems, Inc.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are met:
   7  * - Redistributions of source code must retain the above copyright notice,
   8  *   this list of conditions and the following disclaimer.
   9  * - Redistributions in binary form must reproduce the above copyright notice,
  10  *   this list of conditions and the following disclaimer in the documentation
  11  *   and/or other materials provided with the distribution.
  12  * - Neither the name of Sun Microsystems, Inc. nor the names of its
  13  *   contributors may be used to endorse or promote products derived
  14  *   from this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  17  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
  20  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  26  * POSSIBILITY OF SUCH DAMAGE.
  27  */
  28 /*
  29  * Copyright (c) 1986-1991 by Sun Microsystems Inc.
  30  */
  31 #include <sys/cdefs.h>
  32
  33 /*
  34  * clnt_bcast.c
  35  * Client interface to broadcast service.
  36  *
  37  * Copyright (C) 1988, Sun Microsystems, Inc.
  38  *
  39  * The following is kludged-up support for simple rpc broadcasts.
  40  * Someday a large, complicated system will replace these routines.
  41  */
  42 #include <sys/socket.h>
  43 #include <sys/types.h>
  44 #include <sys/queue.h>
  45
  46 #include <net/if.h>
  47 #include <netinet/in.h>
  48 #include <ifaddrs.h>
  49 #include <sys/poll.h>
  50 #include <rpc/rpc.h>
  51 #ifdef PORTMAP
  52 #include <rpc/pmap_prot.h>
  53 #include <rpc/pmap_clnt.h>
  54 #include <rpc/pmap_rmt.h>
  55 #endif                          /* PORTMAP */
  56 #include <rpc/nettype.h>
  57 #include <arpa/inet.h>
  58 #include <stdio.h>
  59 #include <errno.h>
  60 #include <stdlib.h>
  61 #include <unistd.h>
  62 #include <netdb.h>
  63 #include <err.h>
  64 #include <string.h>
  65
  66 #include "rpc_com.h"
  67 #include "debug.h"
  68
  69 #define MAXBCAST 20     /* Max no of broadcasting transports */
  70 #define INITTIME 4000   /* Time to wait initially */
  71 #define WAITTIME 8000   /* Maximum time to wait */
  72
  73 # define POLLRDNORM     0x040           /* Normal data may be read.  */
  74 # define POLLRDBAND     0x080           /* Priority data may be read.  */
  75
  76
  77
  78 /*
  79  * If nettype is NULL, it broadcasts on all the available
  80  * datagram_n transports. May potentially lead to broadacst storms
  81  * and hence should be used with caution, care and courage.
  82  *
  83  * The current parameter xdr packet size is limited by the max tsdu
  84  * size of the transport. If the max tsdu size of any transport is
  85  * smaller than the parameter xdr packet, then broadcast is not
  86  * sent on that transport.
  87  *
  88  * Also, the packet size should be less the packet size of
  89  * the data link layer (for ethernet it is 1400 bytes).  There is
  90  * no easy way to find out the max size of the data link layer and
  91  * we are assuming that the args would be smaller than that.
  92  *
  93  * The result size has to be smaller than the transport tsdu size.
  94  *
  95  * If PORTMAP has been defined, we send two packets for UDP, one for
  96  * rpcbind and one for portmap. For those machines which support
  97  * both rpcbind and portmap, it will cause them to reply twice, and
  98  * also here it will get two responses ... inefficient and clumsy.
  99  */
 100
 101 #define TAILQ_NEXT(elm, field)  ((elm)->field.tqe_next)
 102
 103 #define TAILQ_FIRST(head)       ((head)->tqh_first)
 104
 105
 106 struct broadif {
 107         int index;
 108         struct sockaddr_storage broadaddr;
 109         TAILQ_ENTRY(broadif) link;
 110 };
 111
 112 typedef TAILQ_HEAD(, broadif) broadlist_t;
 113
 114 int __rpc_getbroadifs(int, int, int, broadlist_t *);
 115 void __rpc_freebroadifs(broadlist_t *);
 116 int __rpc_broadenable(int, int, struct broadif *);
 117
 118 int __rpc_lowvers = 0;
 119
 120 int
 121 __rpc_getbroadifs(int af, int proto, int socktype, broadlist_t *list)
 122 {
 123         int count = 0;
 124         struct broadif *bip;
 125         struct ifaddrs *ifap, *ifp;
 126 #ifdef INET6
 127         struct sockaddr_in6 *sin6;
 128 #endif
 129         struct sockaddr_in *sin;
 130         struct addrinfo hints, *res;
 131
 132         if (getifaddrs(&ifp) < 0)
 133                 return 0;
 134
 135         memset(&hints, 0, sizeof hints);
 136
 137         hints.ai_family = af;
 138         hints.ai_protocol = proto;
 139         hints.ai_socktype = socktype;
 140
 141         if (getaddrinfo(NULL, "sunrpc", &hints, &res) != 0)
 142                 return 0;
 143
 144         for (ifap = ifp; ifap != NULL; ifap = ifap->ifa_next) {
 145                 if (ifap->ifa_addr->sa_family != af ||
 146                     !(ifap->ifa_flags & IFF_UP))
 147                         continue;
 148                 bip = (struct broadif *)malloc(sizeof *bip);
 149                 if (bip == NULL)
 150                         break;
 151                 bip->index = if_nametoindex(ifap->ifa_name);
 152                 if (
 153 #ifdef INET6
 154                 af != AF_INET6 &&
 155 #endif
 156                 (ifap->ifa_flags & IFF_BROADCAST) &&
 157                  ifap->ifa_broadaddr) {
 158                   /*    memcpy(&bip->broadaddr, ifap->ifa_broadaddr,
 159                         (size_t)ifap->ifa_broadaddr->sa_len);*/
 160                         memcpy(&bip->broadaddr, ifap->ifa_broadaddr,
 161                                         sizeof(bip->broadaddr));
 162                         sin = (struct sockaddr_in *)(void *)&bip->broadaddr;
 163                         sin->sin_port =
 164                             ((struct sockaddr_in *)
 165                             (void *)res->ai_addr)->sin_port;
 166                 } else
 167 #ifdef INET6
 168                 if (af == AF_INET6 && (ifap->ifa_flags & IFF_MULTICAST)) {
 169                         sin6 = (struct sockaddr_in6 *)(void *)&bip->broadaddr;
 170                         inet_pton(af, RPCB_MULTICAST_ADDR, &sin6->sin6_addr);
 171                         sin6->sin6_family = af;
 172                         sin6->sin6_port =
 173                             ((struct sockaddr_in6 *)
 174                             (void *)res->ai_addr)->sin6_port;
 175                         sin6->sin6_scope_id = bip->index;
 176                 } else
 177 #endif
 178                 {
 179                         free(bip);
 180                         continue;
 181                 }
 182                 TAILQ_INSERT_TAIL(list, bip, link);
 183                 count++;
 184         }
 185         freeifaddrs(ifp);
 186         freeaddrinfo(res);
 187
 188         return count;
 189 }
 190
 191 void
 192 __rpc_freebroadifs(broadlist_t *list)
 193 {
 194         struct broadif *bip, *next;
 195
 196         bip = TAILQ_FIRST(list);
 197
 198         while (bip != NULL) {
 199                 next = TAILQ_NEXT(bip, link);
 200                 free(bip);
 201                 bip = next;
 202         }
 203 }
 204
 205 int
 206 /*ARGSUSED*/
 207 __rpc_broadenable(int af, int s, struct broadif *bip)
 208 {
 209         int o = 1;
 210
 211 #if 0
 212         if (af == AF_INET6) {
 213                 fprintf(stderr, "set v6 multicast if to %d\n", bip->index);
 214                 if (setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_IF, &bip->index,
 215                     sizeof bip->index) < 0)
 216                         return -1;
 217         } else
 218 #endif
 219                 if (setsockopt(s, SOL_SOCKET, SO_BROADCAST, &o, sizeof o) < 0)
 220                         return -1;
 221
 222         return 0;
 223 }
 224
 225
 226 enum clnt_stat
 227 rpc_broadcast_exp(prog, vers, proc, xargs, argsp, xresults, resultsp,
 228         eachresult, inittime, waittime, nettype)
 229         rpcprog_t       prog;           /* program number */
 230         rpcvers_t       vers;           /* version number */
 231         rpcproc_t       proc;           /* procedure number */
 232         xdrproc_t       xargs;          /* xdr routine for args */
 233         caddr_t         argsp;          /* pointer to args */
 234         xdrproc_t       xresults;       /* xdr routine for results */
 235         caddr_t         resultsp;       /* pointer to results */
 236         resultproc_t    eachresult;     /* call with each result obtained */
 237         int             inittime;       /* how long to wait initially */
 238         int             waittime;       /* maximum time to wait */
 239         const char              *nettype;       /* transport type */
 240 {
 241         enum clnt_stat  stat = RPC_SUCCESS; /* Return status */
 242         XDR             xdr_stream; /* XDR stream */
 243         XDR             *xdrs = &xdr_stream;
 244         struct rpc_msg  msg;    /* RPC message */
 245         struct timeval  t;
 246         char            *outbuf = NULL; /* Broadcast msg buffer */
 247         char            *inbuf = NULL; /* Reply buf */
 248         int             inlen;
 249         u_int           maxbufsize = 0;
 250         AUTH            *sys_auth = authunix_create_default();
 251         int             i;
 252         void            *handle;
 253         char            uaddress[1024]; /* A self imposed limit */
 254         char            *uaddrp = uaddress;
 255         int             pmap_reply_flag; /* reply recvd from PORTMAP */
 256         /* An array of all the suitable broadcast transports */
 257         struct {
 258                 int fd;         /* File descriptor */
 259                 int af;
 260                 int proto;
 261                 struct netconfig *nconf; /* Netconfig structure */
 262                 u_int asize;    /* Size of the addr buf */
 263                 u_int dsize;    /* Size of the data buf */
 264                 struct sockaddr_storage raddr; /* Remote address */
 265                 broadlist_t nal;
 266         } fdlist[MAXBCAST];
 267         struct pollfd pfd[MAXBCAST];
 268         size_t fdlistno = 0;
 269         struct r_rpcb_rmtcallargs barg; /* Remote arguments */
 270         struct r_rpcb_rmtcallres bres; /* Remote results */
 271         size_t outlen;
 272         struct netconfig *nconf;
 273         int msec;
 274         int pollretval;
 275         int fds_found;
 276
 277 #ifdef PORTMAP
 278         size_t outlen_pmap = 0;
 279         u_long port;            /* Remote port number */
 280         int pmap_flag = 0;      /* UDP exists ? */
 281         char *outbuf_pmap = NULL;
 282         struct rmtcallargs barg_pmap;   /* Remote arguments */
 283         struct rmtcallres bres_pmap; /* Remote results */
 284         u_int udpbufsz = 0;
 285 #endif                          /* PORTMAP */
 286
 287         if (sys_auth == NULL) {
 288                 return (RPC_SYSTEMERROR);
 289         }
 290         /*
 291          * initialization: create a fd, a broadcast address, and send the
 292          * request on the broadcast transport.
 293          * Listen on all of them and on replies, call the user supplied
 294          * function.
 295          */
 296
 297         if (nettype == NULL)
 298                 nettype = "datagram_n";
 299         if ((handle = __rpc_setconf(nettype)) == NULL) {
 300                 return (RPC_UNKNOWNPROTO);
 301         }
 302         while ((nconf = __rpc_getconf(handle)) != NULL) {
 303                 int fd;
 304                 struct __rpc_sockinfo si;
 305
 306                 if (nconf->nc_semantics != NC_TPI_CLTS)
 307                         continue;
 308                 if (fdlistno >= MAXBCAST)
 309                         break;  /* No more slots available */
 310                 if (!__rpc_nconf2sockinfo(nconf, &si))
 311                         continue;
 312
 313                 TAILQ_INIT(&fdlist[fdlistno].nal);
 314                 if (__rpc_getbroadifs(si.si_af, si.si_proto, si.si_socktype,
 315                     &fdlist[fdlistno].nal) == 0)
 316                         continue;
 317
 318                 fd = socket(si.si_af, si.si_socktype, si.si_proto);
 319                 if (fd < 0) {
 320                         stat = RPC_CANTSEND;
 321                         continue;
 322                 }
 323                 fdlist[fdlistno].af = si.si_af;
 324                 fdlist[fdlistno].proto = si.si_proto;
 325                 fdlist[fdlistno].fd = fd;
 326                 fdlist[fdlistno].nconf = nconf;
 327                 fdlist[fdlistno].asize = __rpc_get_a_size(si.si_af);
 328                 pfd[fdlistno].events = POLLIN | POLLPRI |
 329                         POLLRDNORM | POLLRDBAND;
 330                 pfd[fdlistno].fd = fdlist[fdlistno].fd = fd;
 331                 fdlist[fdlistno].dsize = __rpc_get_t_size(si.si_af, si.si_proto,
 332                                                           0);
 333
 334                 if (maxbufsize <= fdlist[fdlistno].dsize)
 335                         maxbufsize = fdlist[fdlistno].dsize;
 336
 337 #ifdef PORTMAP
 338                 if (si.si_af == AF_INET && si.si_proto == IPPROTO_UDP) {
 339                         udpbufsz = fdlist[fdlistno].dsize;
 340                         if ((outbuf_pmap = malloc(udpbufsz)) == NULL) {
 341                                 close(fd);
 342                                 stat = RPC_SYSTEMERROR;
 343                                 goto done_broad;
 344                         }
 345                         pmap_flag = 1;
 346                 }
 347 #endif                          /* PORTMAP */
 348                 fdlistno++;
 349         }
 350
 351         if (fdlistno == 0) {
 352                 if (stat == RPC_SUCCESS)
 353                         stat = RPC_UNKNOWNPROTO;
 354                 goto done_broad;
 355         }
 356         if (maxbufsize == 0) {
 357                 if (stat == RPC_SUCCESS)
 358                         stat = RPC_CANTSEND;
 359                 goto done_broad;
 360         }
 361         inbuf = malloc(maxbufsize);
 362         outbuf = malloc(maxbufsize);
 363         if ((inbuf == NULL) || (outbuf == NULL)) {
 364                 stat = RPC_SYSTEMERROR;
 365                 goto done_broad;
 366         }
 367
 368         /* Serialize all the arguments which have to be sent */
 369         (void) gettimeofday(&t, NULL);
 370         msg.rm_xid = __RPC_GETXID(&t);
 371         msg.rm_direction = CALL;
 372         msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
 373         msg.rm_call.cb_prog = RPCBPROG;
 374         msg.rm_call.cb_vers = RPCBVERS;
 375         msg.rm_call.cb_proc = RPCBPROC_CALLIT;
 376         barg.prog = prog;
 377         barg.vers = vers;
 378         barg.proc = proc;
 379         barg.args.args_val = argsp;
 380         barg.xdr_args = xargs;
 381         bres.addr = uaddrp;
 382         bres.results.results_val = resultsp;
 383         bres.xdr_res = xresults;
 384         msg.rm_call.cb_cred = sys_auth->ah_cred;
 385         msg.rm_call.cb_verf = sys_auth->ah_verf;
 386         xdrmem_create(xdrs, outbuf, maxbufsize, XDR_ENCODE);
 387         if ((!xdr_callmsg(xdrs, &msg)) ||
 388             (!xdr_rpcb_rmtcallargs(xdrs,
 389             (struct rpcb_rmtcallargs *)(void *)&barg))) {
 390                 stat = RPC_CANTENCODEARGS;
 391                 goto done_broad;
 392         }
 393         outlen = xdr_getpos(xdrs);
 394         xdr_destroy(xdrs);
 395
 396 #ifdef PORTMAP
 397         /* Prepare the packet for version 2 PORTMAP */
 398         if (pmap_flag) {
 399                 msg.rm_xid++;   /* One way to distinguish */
 400                 msg.rm_call.cb_prog = PMAPPROG;
 401                 msg.rm_call.cb_vers = PMAPVERS;
 402                 msg.rm_call.cb_proc = PMAPPROC_CALLIT;
 403                 barg_pmap.prog = prog;
 404                 barg_pmap.vers = vers;
 405                 barg_pmap.proc = proc;
 406                 barg_pmap.args_ptr = argsp;
 407                 barg_pmap.xdr_args = xargs;
 408                 bres_pmap.port_ptr = &port;
 409                 bres_pmap.xdr_results = xresults;
 410                 bres_pmap.results_ptr = resultsp;
 411                 xdrmem_create(xdrs, outbuf_pmap, udpbufsz, XDR_ENCODE);
 412                 if ((! xdr_callmsg(xdrs, &msg)) ||
 413                     (! xdr_rmtcall_args(xdrs, &barg_pmap))) {
 414                         stat = RPC_CANTENCODEARGS;
 415                         goto done_broad;
 416                 }
 417                 outlen_pmap = xdr_getpos(xdrs);
 418                 xdr_destroy(xdrs);
 419         }
 420 #endif                          /* PORTMAP */
 421
 422         /*
 423          * Basic loop: broadcast the packets to transports which
 424          * support data packets of size such that one can encode
 425          * all the arguments.
 426          * Wait a while for response(s).
 427          * The response timeout grows larger per iteration.
 428          */
 429         for (msec = inittime; msec <= waittime; msec += msec) {
 430                 struct broadif *bip;
 431
 432                 /* Broadcast all the packets now */
 433                 for (i = 0; i < fdlistno; i++) {
 434                         if (fdlist[i].dsize < outlen) {
 435                                 stat = RPC_CANTSEND;
 436                                 continue;
 437                         }
 438                         for (bip = TAILQ_FIRST(&fdlist[i].nal); bip != NULL;
 439                              bip = TAILQ_NEXT(bip, link)) {
 440                                 void *addr;
 441
 442                                 addr = &bip->broadaddr;
 443
 444                                 __rpc_broadenable(fdlist[i].af, fdlist[i].fd,
 445                                     bip);
 446
 447                                 /*
 448                                  * Only use version 3 if lowvers is not set
 449                                  */
 450
 451                                 if (!__rpc_lowvers)
 452                                         if (sendto(fdlist[i].fd, outbuf,
 453                                             outlen, 0, (struct sockaddr*)addr,
 454                                             (size_t)fdlist[i].asize) !=
 455                                             outlen) {
 456                                                 LIBTIRPC_DEBUG(1,
 457                                                         ("rpc_broadcast_exp: sendto failed: errno %d", errno));
 458                                                 warnx("rpc_broadcast_exp: cannot send broadcast packet");
 459                                                 stat = RPC_CANTSEND;
 460                                                 continue;
 461                                         };
 462                                 if (!__rpc_lowvers)
 463                                         LIBTIRPC_DEBUG(3, ("rpc_broadcast_exp: Broadcast packet sent for %s\n",
 464                                                  fdlist[i].nconf->nc_netid));
 465 #ifdef PORTMAP
 466                                 /*
 467                                  * Send the version 2 packet also
 468                                  * for UDP/IP
 469                                  */
 470                                 if (pmap_flag &&
 471                                     fdlist[i].proto == IPPROTO_UDP) {
 472                                         if (sendto(fdlist[i].fd, outbuf_pmap,
 473                                             outlen_pmap, 0, addr,
 474                                             (size_t)fdlist[i].asize) !=
 475                                                 outlen_pmap) {
 476                                                 warnx("clnt_bcast: "
 477                                                     "Cannot send broadcast packet");
 478                                                 stat = RPC_CANTSEND;
 479                                                 continue;
 480                                         }
 481                                 }
 482                                 LIBTIRPC_DEBUG(3, ("rpc_broadcast_exp: PMAP Broadcast packet sent for %s\n",
 483                                         fdlist[i].nconf->nc_netid));
 484 #endif                          /* PORTMAP */
 485                         }
 486                         /* End for sending all packets on this transport */
 487                 }       /* End for sending on all transports */
 488
 489                 if (eachresult == NULL) {
 490                         stat = RPC_SUCCESS;
 491                         goto done_broad;
 492                 }
 493
 494                 /*
 495                  * Get all the replies from these broadcast requests
 496                  */
 497         recv_again:
 498
 499                 switch (pollretval = poll(pfd, fdlistno, msec)) {
 500                 case 0:         /* timed out */
 501                         stat = RPC_TIMEDOUT;
 502                         continue;
 503                 case -1:        /* some kind of error - we ignore it */
 504                         goto recv_again;
 505                 }               /* end of poll results switch */
 506
 507                 for (i = fds_found = 0;
 508                      i < fdlistno && fds_found < pollretval; i++) {
 509                         bool_t done = FALSE;
 510
 511                         if (pfd[i].revents == 0)
 512                                 continue;
 513                         else if (pfd[i].revents & POLLNVAL) {
 514                                 /*
 515                                  * Something bad has happened to this descri-
 516                                  * ptor. We can cause _poll() to ignore
 517                                  * it simply by using a negative fd.  We do that
 518                                  * rather than compacting the pfd[] and fdlist[]
 519                                  * arrays.
 520                                  */
 521                                 pfd[i].fd = -1;
 522                                 fds_found++;
 523                                 continue;
 524                         } else
 525                                 fds_found++;
 526                         LIBTIRPC_DEBUG(3, ("rpc_broadcast_exp: response for %s\n",
 527                                 fdlist[i].nconf->nc_netid));
 528                 try_again:
 529                         inlen = recvfrom(fdlist[i].fd, inbuf, fdlist[i].dsize,
 530                             0, (struct sockaddr *)(void *)&fdlist[i].raddr,
 531                             &fdlist[i].asize);
 532                         if (inlen < 0) {
 533                                 if (errno == EINTR)
 534                                         goto try_again;
 535                                 warnx("clnt_bcast: Cannot receive reply to "
 536                                         "broadcast");
 537                                 stat = RPC_CANTRECV;
 538                                 continue;
 539                         }
 540                         if (inlen < sizeof (u_int32_t))
 541                                 continue; /* Drop that and go ahead */
 542                         /*
 543                          * see if reply transaction id matches sent id.
 544                          * If so, decode the results. If return id is xid + 1
 545                          * it was a PORTMAP reply
 546                          */
 547                         if (*((u_int32_t *)(void *)(inbuf)) ==
 548                             *((u_int32_t *)(void *)(outbuf))) {
 549                                 pmap_reply_flag = 0;
 550                                 msg.acpted_rply.ar_verf = _null_auth;
 551                                 msg.acpted_rply.ar_results.where =
 552                                         (caddr_t)(void *)&bres;
 553                                 msg.acpted_rply.ar_results.proc =
 554                                         (xdrproc_t)xdr_rpcb_rmtcallres;
 555 #ifdef PORTMAP
 556                         } else if (pmap_flag &&
 557                                 *((u_int32_t *)(void *)(inbuf)) ==
 558                                 *((u_int32_t *)(void *)(outbuf_pmap))) {
 559                                 pmap_reply_flag = 1;
 560                                 msg.acpted_rply.ar_verf = _null_auth;
 561                                 msg.acpted_rply.ar_results.where =
 562                                         (caddr_t)(void *)&bres_pmap;
 563                                 msg.acpted_rply.ar_results.proc =
 564                                         (xdrproc_t)xdr_rmtcallres;
 565 #endif                          /* PORTMAP */
 566                         } else
 567                                 continue;
 568                         xdrmem_create(xdrs, inbuf, (u_int)inlen, XDR_DECODE);
 569                         if (xdr_replymsg(xdrs, &msg)) {
 570                                 if ((msg.rm_reply.rp_stat == MSG_ACCEPTED) &&
 571                                     (msg.acpted_rply.ar_stat == SUCCESS)) {
 572                                         struct netbuf *np;
 573 #ifdef PORTMAP
 574                                         struct netbuf taddr;
 575                                         struct sockaddr_in sin;
 576
 577                                         if (pmap_flag && pmap_reply_flag) {
 578                                                 memcpy(&sin, &fdlist[i].raddr, sizeof(sin));
 579                                                 sin.sin_port = htons((u_short)port);
 580                                                 memcpy(&fdlist[i].raddr, &sin, sizeof(sin));
 581                                                 taddr.len = taddr.maxlen =
 582                                                     sizeof(fdlist[i].raddr);
 583                                                 taddr.buf = &fdlist[i].raddr;
 584                                                 done = (*eachresult)(resultsp,
 585                                                     &taddr, fdlist[i].nconf);
 586                                         } else {
 587 #endif                          /* PORTMAP */
 588                                                 LIBTIRPC_DEBUG(3, ("rpc_broadcast_exp: uaddr %s\n", uaddrp));
 589                                                 np = uaddr2taddr(
 590                                                     fdlist[i].nconf, uaddrp);
 591                                                 done = (*eachresult)(resultsp,
 592                                                     np, fdlist[i].nconf);
 593                                                 free(np);
 594 #ifdef PORTMAP
 595                                         }
 596 #endif                          /* PORTMAP */
 597                                 }
 598                                 /* otherwise, we just ignore the errors ... */
 599                         }
 600                         /* else some kind of deserialization problem ... */
 601
 602                         xdrs->x_op = XDR_FREE;
 603                         msg.acpted_rply.ar_results.proc = (xdrproc_t) xdr_void;
 604                         (void) xdr_replymsg(xdrs, &msg);
 605                         (void) (*xresults)(xdrs, resultsp);
 606                         XDR_DESTROY(xdrs);
 607                         if (done) {
 608                                 stat = RPC_SUCCESS;
 609                                 goto done_broad;
 610                         } else {
 611                                 goto recv_again;
 612                         }
 613                 }               /* The recv for loop */
 614         }                       /* The giant for loop */
 615
 616 done_broad:
 617         if (inbuf)
 618                 (void) free(inbuf);
 619         if (outbuf)
 620                 (void) free(outbuf);
 621 #ifdef PORTMAP
 622         if (outbuf_pmap)
 623                 (void) free(outbuf_pmap);
 624 #endif                          /* PORTMAP */
 625         for (i = 0; i < fdlistno; i++) {
 626                 (void)close(fdlist[i].fd);
 627                 __rpc_freebroadifs(&fdlist[i].nal);
 628         }
 629         AUTH_DESTROY(sys_auth);
 630         (void) __rpc_endconf(handle);
 631
 632         return (stat);
 633 }
 634
 635
 636 enum clnt_stat
 637 rpc_broadcast(prog, vers, proc, xargs, argsp, xresults, resultsp,
 638                         eachresult, nettype)
 639         rpcprog_t       prog;           /* program number */
 640         rpcvers_t       vers;           /* version number */
 641         rpcproc_t       proc;           /* procedure number */
 642         xdrproc_t       xargs;          /* xdr routine for args */
 643         caddr_t         argsp;          /* pointer to args */
 644         xdrproc_t       xresults;       /* xdr routine for results */
 645         caddr_t         resultsp;       /* pointer to results */
 646         resultproc_t    eachresult;     /* call with each result obtained */
 647         const char              *nettype;       /* transport type */
 648 {
 649         enum clnt_stat  dummy;
 650
 651         dummy = rpc_broadcast_exp(prog, vers, proc, xargs, argsp,
 652                 xresults, resultsp, eachresult,
 653                 INITTIME, WAITTIME, nettype);
 654         return (dummy);
 655 }