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 /* new queue functions */
  47 #include <misc/queue.h>
  48
  49 #include <net/if.h>
  50 #include <netinet/in.h>
  51 #include <ifaddrs.h>
  52 #include <sys/poll.h>
  53 #include <rpc/rpc.h>
  54 #ifdef PORTMAP
  55 #include <rpc/pmap_prot.h>
  56 #include <rpc/pmap_clnt.h>
  57 #include <rpc/pmap_rmt.h>
  58 #endif                          /* PORTMAP */
  59 #include <rpc/nettype.h>
  60 #include <arpa/inet.h>
  61 #ifdef RPC_DEBUG
  62 #include <stdio.h>
  63 #endif
  64 #include <errno.h>
  65 #include <stdlib.h>
  66 #include <unistd.h>
  67 #include <netdb.h>
  68 #include <err.h>
  69 #include <string.h>
  70
  71 #include "rpc_com.h"
  72
  73 #define MAXBCAST 20     /* Max no of broadcasting transports */
  74 #define INITTIME 4000   /* Time to wait initially */
  75 #define WAITTIME 8000   /* Maximum time to wait */
  76
  77 # define POLLRDNORM     0x040           /* Normal data may be read.  */
  78 # define POLLRDBAND     0x080           /* Priority data may be read.  */
  79
  80
  81
  82 /*
  83  * If nettype is NULL, it broadcasts on all the available
  84  * datagram_n transports. May potentially lead to broadacst storms
  85  * and hence should be used with caution, care and courage.
  86  *
  87  * The current parameter xdr packet size is limited by the max tsdu
  88  * size of the transport. If the max tsdu size of any transport is
  89  * smaller than the parameter xdr packet, then broadcast is not
  90  * sent on that transport.
  91  *
  92  * Also, the packet size should be less the packet size of
  93  * the data link layer (for ethernet it is 1400 bytes).  There is
  94  * no easy way to find out the max size of the data link layer and
  95  * we are assuming that the args would be smaller than that.
  96  *
  97  * The result size has to be smaller than the transport tsdu size.
  98  *
  99  * If PORTMAP has been defined, we send two packets for UDP, one for
 100  * rpcbind and one for portmap. For those machines which support
 101  * both rpcbind and portmap, it will cause them to reply twice, and
 102  * also here it will get two responses ... inefficient and clumsy.
 103  */
 104
 105 #define TAILQ_NEXT(elm, field)  ((elm)->field.tqe_next)
 106
 107 #define TAILQ_FIRST(head)       ((head)->tqh_first)
 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                 return 0;
 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                         memcpy(&bip->broadaddr, ifap->ifa_broadaddr,
 165                                         sizeof(bip->broadaddr));
 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_port =
 177                             ((struct sockaddr_in6 *)
 178                             (void *)res->ai_addr)->sin6_port;
 179                         sin6->sin6_scope_id = bip->index;
 180                 } else
 181 #endif
 182                 {
 183                         free(bip);
 184                         continue;
 185                 }
 186                 TAILQ_INSERT_TAIL(list, bip, link);
 187                 count++;
 188         }
 189         freeifaddrs(ifp);
 190         freeaddrinfo(res);
 191
 192         return count;
 193 }
 194
 195 void
 196 __rpc_freebroadifs(broadlist_t *list)
 197 {
 198         struct broadif *bip, *next;
 199
 200         bip = TAILQ_FIRST(list);
 201
 202         while (bip != NULL) {
 203                 next = TAILQ_NEXT(bip, link);
 204                 free(bip);
 205                 bip = next;
 206         }
 207 }
 208
 209 int
 210 /*ARGSUSED*/
 211 __rpc_broadenable(int af, int s, struct broadif *bip)
 212 {
 213         int o = 1;
 214
 215 #if 0
 216         if (af == AF_INET6) {
 217                 fprintf(stderr, "set v6 multicast if to %d\n", bip->index);
 218                 if (setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_IF, &bip->index,
 219                     sizeof bip->index) < 0)
 220                         return -1;
 221         } else
 222 #endif
 223                 if (setsockopt(s, SOL_SOCKET, SO_BROADCAST, &o, sizeof o) < 0)
 224                         return -1;
 225
 226         return 0;
 227 }
 228
 229
 230 enum clnt_stat
 231 rpc_broadcast_exp(prog, vers, proc, xargs, argsp, xresults, resultsp,
 232         eachresult, inittime, waittime, nettype)
 233         rpcprog_t       prog;           /* program number */
 234         rpcvers_t       vers;           /* version number */
 235         rpcproc_t       proc;           /* procedure number */
 236         xdrproc_t       xargs;          /* xdr routine for args */
 237         caddr_t         argsp;          /* pointer to args */
 238         xdrproc_t       xresults;       /* xdr routine for results */
 239         caddr_t         resultsp;       /* pointer to results */
 240         resultproc_t    eachresult;     /* call with each result obtained */
 241         int             inittime;       /* how long to wait initially */
 242         int             waittime;       /* maximum time to wait */
 243         const char              *nettype;       /* transport type */
 244 {
 245         enum clnt_stat  stat = RPC_SUCCESS; /* Return status */
 246         XDR             xdr_stream; /* XDR stream */
 247         XDR             *xdrs = &xdr_stream;
 248         struct rpc_msg  msg;    /* RPC message */
 249         struct timeval  t;
 250         char            *outbuf = NULL; /* Broadcast msg buffer */
 251         char            *inbuf = NULL; /* Reply buf */
 252         int             inlen;
 253         u_int           maxbufsize = 0;
 254         AUTH            *sys_auth = authunix_create_default();
 255         int             i;
 256         void            *handle;
 257         char            uaddress[1024]; /* A self imposed limit */
 258         char            *uaddrp = uaddress;
 259         int             pmap_reply_flag; /* reply recvd from PORTMAP */
 260         /* An array of all the suitable broadcast transports */
 261         struct {
 262                 int fd;         /* File descriptor */
 263                 int af;
 264                 int proto;
 265                 struct netconfig *nconf; /* Netconfig structure */
 266                 u_int asize;    /* Size of the addr buf */
 267                 u_int dsize;    /* Size of the data buf */
 268                 struct sockaddr_storage raddr; /* Remote address */
 269                 broadlist_t nal;
 270         } fdlist[MAXBCAST];
 271         struct pollfd pfd[MAXBCAST];
 272         size_t fdlistno = 0;
 273         struct r_rpcb_rmtcallargs barg; /* Remote arguments */
 274         struct r_rpcb_rmtcallres bres; /* Remote results */
 275         size_t outlen;
 276         struct netconfig *nconf;
 277         int msec;
 278         int pollretval;
 279         int fds_found;
 280
 281 #ifdef PORTMAP
 282         size_t outlen_pmap = 0;
 283         u_long port;            /* Remote port number */
 284         int pmap_flag = 0;      /* UDP exists ? */
 285         char *outbuf_pmap = NULL;
 286         struct rmtcallargs barg_pmap;   /* Remote arguments */
 287         struct rmtcallres bres_pmap; /* Remote results */
 288         u_int udpbufsz = 0;
 289 #endif                          /* PORTMAP */
 290
 291         if (sys_auth == NULL) {
 292                 return (RPC_SYSTEMERROR);
 293         }
 294         /*
 295          * initialization: create a fd, a broadcast address, and send the
 296          * request on the broadcast transport.
 297          * Listen on all of them and on replies, call the user supplied
 298          * function.
 299          */
 300
 301         if (nettype == NULL)
 302                 nettype = "datagram_n";
 303         if ((handle = __rpc_setconf(nettype)) == NULL) {
 304                 return (RPC_UNKNOWNPROTO);
 305         }
 306         while ((nconf = __rpc_getconf(handle)) != NULL) {
 307                 int fd;
 308                 struct __rpc_sockinfo si;
 309
 310                 if (nconf->nc_semantics != NC_TPI_CLTS)
 311                         continue;
 312                 if (fdlistno >= MAXBCAST)
 313                         break;  /* No more slots available */
 314                 if (!__rpc_nconf2sockinfo(nconf, &si))
 315                         continue;
 316
 317                 TAILQ_INIT(&fdlist[fdlistno].nal);
 318                 if (__rpc_getbroadifs(si.si_af, si.si_proto, si.si_socktype,
 319                     &fdlist[fdlistno].nal) == 0)
 320                         continue;
 321
 322                 fd = socket(si.si_af, si.si_socktype, si.si_proto);
 323                 if (fd < 0) {
 324                         stat = RPC_CANTSEND;
 325                         continue;
 326                 }
 327                 fdlist[fdlistno].af = si.si_af;
 328                 fdlist[fdlistno].proto = si.si_proto;
 329                 fdlist[fdlistno].fd = fd;
 330                 fdlist[fdlistno].nconf = nconf;
 331                 fdlist[fdlistno].asize = __rpc_get_a_size(si.si_af);
 332                 pfd[fdlistno].events = POLLIN | POLLPRI |
 333                         POLLRDNORM | POLLRDBAND;
 334                 pfd[fdlistno].fd = fdlist[fdlistno].fd = fd;
 335                 fdlist[fdlistno].dsize = __rpc_get_t_size(si.si_af, si.si_proto,
 336                                                           0);
 337
 338                 if (maxbufsize <= fdlist[fdlistno].dsize)
 339                         maxbufsize = fdlist[fdlistno].dsize;
 340
 341 #ifdef PORTMAP
 342                 if (si.si_af == AF_INET && si.si_proto == IPPROTO_UDP) {
 343                         udpbufsz = fdlist[fdlistno].dsize;
 344                         if ((outbuf_pmap = malloc(udpbufsz)) == NULL) {
 345                                 close(fd);
 346                                 stat = RPC_SYSTEMERROR;
 347                                 goto done_broad;
 348                         }
 349                         pmap_flag = 1;
 350                 }
 351 #endif                          /* PORTMAP */
 352                 fdlistno++;
 353         }
 354
 355         if (fdlistno == 0) {
 356                 if (stat == RPC_SUCCESS)
 357                         stat = RPC_UNKNOWNPROTO;
 358                 goto done_broad;
 359         }
 360         if (maxbufsize == 0) {
 361                 if (stat == RPC_SUCCESS)
 362                         stat = RPC_CANTSEND;
 363                 goto done_broad;
 364         }
 365         inbuf = malloc(maxbufsize);
 366         outbuf = malloc(maxbufsize);
 367         if ((inbuf == NULL) || (outbuf == NULL)) {
 368                 stat = RPC_SYSTEMERROR;
 369                 goto done_broad;
 370         }
 371
 372         /* Serialize all the arguments which have to be sent */
 373         (void) gettimeofday(&t, NULL);
 374         msg.rm_xid = __RPC_GETXID(&t);
 375         msg.rm_direction = CALL;
 376         msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
 377         msg.rm_call.cb_prog = RPCBPROG;
 378         msg.rm_call.cb_vers = RPCBVERS;
 379         msg.rm_call.cb_proc = RPCBPROC_CALLIT;
 380         barg.prog = prog;
 381         barg.vers = vers;
 382         barg.proc = proc;
 383         barg.args.args_val = argsp;
 384         barg.xdr_args = xargs;
 385         bres.addr = uaddrp;
 386         bres.results.results_val = resultsp;
 387         bres.xdr_res = xresults;
 388         msg.rm_call.cb_cred = sys_auth->ah_cred;
 389         msg.rm_call.cb_verf = sys_auth->ah_verf;
 390         xdrmem_create(xdrs, outbuf, maxbufsize, XDR_ENCODE);
 391         if ((!xdr_callmsg(xdrs, &msg)) ||
 392             (!xdr_rpcb_rmtcallargs(xdrs,
 393             (struct rpcb_rmtcallargs *)(void *)&barg))) {
 394                 stat = RPC_CANTENCODEARGS;
 395                 goto done_broad;
 396         }
 397         outlen = xdr_getpos(xdrs);
 398         xdr_destroy(xdrs);
 399
 400 #ifdef PORTMAP
 401         /* Prepare the packet for version 2 PORTMAP */
 402         if (pmap_flag) {
 403                 msg.rm_xid++;   /* One way to distinguish */
 404                 msg.rm_call.cb_prog = PMAPPROG;
 405                 msg.rm_call.cb_vers = PMAPVERS;
 406                 msg.rm_call.cb_proc = PMAPPROC_CALLIT;
 407                 barg_pmap.prog = prog;
 408                 barg_pmap.vers = vers;
 409                 barg_pmap.proc = proc;
 410                 barg_pmap.args_ptr = argsp;
 411                 barg_pmap.xdr_args = xargs;
 412                 bres_pmap.port_ptr = &port;
 413                 bres_pmap.xdr_results = xresults;
 414                 bres_pmap.results_ptr = resultsp;
 415                 xdrmem_create(xdrs, outbuf_pmap, udpbufsz, XDR_ENCODE);
 416                 if ((! xdr_callmsg(xdrs, &msg)) ||
 417                     (! xdr_rmtcall_args(xdrs, &barg_pmap))) {
 418                         stat = RPC_CANTENCODEARGS;
 419                         goto done_broad;
 420                 }
 421                 outlen_pmap = xdr_getpos(xdrs);
 422                 xdr_destroy(xdrs);
 423         }
 424 #endif                          /* PORTMAP */
 425
 426         /*
 427          * Basic loop: broadcast the packets to transports which
 428          * support data packets of size such that one can encode
 429          * all the arguments.
 430          * Wait a while for response(s).
 431          * The response timeout grows larger per iteration.
 432          */
 433         for (msec = inittime; msec <= waittime; msec += msec) {
 434                 struct broadif *bip;
 435
 436                 /* Broadcast all the packets now */
 437                 for (i = 0; i < fdlistno; i++) {
 438                         if (fdlist[i].dsize < outlen) {
 439                                 stat = RPC_CANTSEND;
 440                                 continue;
 441                         }
 442                         for (bip = TAILQ_FIRST(&fdlist[i].nal); bip != NULL;
 443                              bip = TAILQ_NEXT(bip, link)) {
 444                                 void *addr;
 445
 446                                 addr = &bip->broadaddr;
 447
 448                                 __rpc_broadenable(fdlist[i].af, fdlist[i].fd,
 449                                     bip);
 450
 451                                 /*
 452                                  * Only use version 3 if lowvers is not set
 453                                  */
 454
 455                                 if (!__rpc_lowvers)
 456                                         if (sendto(fdlist[i].fd, outbuf,
 457                                             outlen, 0, (struct sockaddr*)addr,
 458                                             (size_t)fdlist[i].asize) !=
 459                                             outlen) {
 460 #ifdef RPC_DEBUG
 461                                                 perror("sendto");
 462 #endif
 463                                                 warnx("clnt_bcast: cannot send"
 464                                                       "broadcast packet");
 465                                                 stat = RPC_CANTSEND;
 466                                                 continue;
 467                                         };
 468 #ifdef RPC_DEBUG
 469                                 if (!__rpc_lowvers)
 470                                         fprintf(stderr, "Broadcast packet sent "
 471                                                 "for %s\n",
 472                                                  fdlist[i].nconf->nc_netid);
 473 #endif
 474 #ifdef PORTMAP
 475                                 /*
 476                                  * Send the version 2 packet also
 477                                  * for UDP/IP
 478                                  */
 479                                 if (pmap_flag &&
 480                                     fdlist[i].proto == IPPROTO_UDP) {
 481                                         if (sendto(fdlist[i].fd, outbuf_pmap,
 482                                             outlen_pmap, 0, addr,
 483                                             (size_t)fdlist[i].asize) !=
 484                                                 outlen_pmap) {
 485                                                 warnx("clnt_bcast: "
 486                                                     "Cannot send broadcast packet");
 487                                                 stat = RPC_CANTSEND;
 488                                                 continue;
 489                                         }
 490                                 }
 491 #ifdef RPC_DEBUG
 492                                 fprintf(stderr, "PMAP Broadcast packet "
 493                                         "sent for %s\n",
 494                                         fdlist[i].nconf->nc_netid);
 495 #endif
 496 #endif                          /* PORTMAP */
 497                         }
 498                         /* End for sending all packets on this transport */
 499                 }       /* End for sending on all transports */
 500
 501                 if (eachresult == NULL) {
 502                         stat = RPC_SUCCESS;
 503                         goto done_broad;
 504                 }
 505
 506                 /*
 507                  * Get all the replies from these broadcast requests
 508                  */
 509         recv_again:
 510
 511                 switch (pollretval = poll(pfd, fdlistno, msec)) {
 512                 case 0:         /* timed out */
 513                         stat = RPC_TIMEDOUT;
 514                         continue;
 515                 case -1:        /* some kind of error - we ignore it */
 516                         goto recv_again;
 517                 }               /* end of poll results switch */
 518
 519                 for (i = fds_found = 0;
 520                      i < fdlistno && fds_found < pollretval; i++) {
 521                         bool_t done = FALSE;
 522
 523                         if (pfd[i].revents == 0)
 524                                 continue;
 525                         else if (pfd[i].revents & POLLNVAL) {
 526                                 /*
 527                                  * Something bad has happened to this descri-
 528                                  * ptor. We can cause _poll() to ignore
 529                                  * it simply by using a negative fd.  We do that
 530                                  * rather than compacting the pfd[] and fdlist[]
 531                                  * arrays.
 532                                  */
 533                                 pfd[i].fd = -1;
 534                                 fds_found++;
 535                                 continue;
 536                         } else
 537                                 fds_found++;
 538 #ifdef RPC_DEBUG
 539                         fprintf(stderr, "response for %s\n",
 540                                 fdlist[i].nconf->nc_netid);
 541 #endif
 542                 try_again:
 543                         inlen = recvfrom(fdlist[i].fd, inbuf, fdlist[i].dsize,
 544                             0, (struct sockaddr *)(void *)&fdlist[i].raddr,
 545                             &fdlist[i].asize);
 546                         if (inlen < 0) {
 547                                 if (errno == EINTR)
 548                                         goto try_again;
 549                                 warnx("clnt_bcast: Cannot receive reply to "
 550                                         "broadcast");
 551                                 stat = RPC_CANTRECV;
 552                                 continue;
 553                         }
 554                         if (inlen < sizeof (u_int32_t))
 555                                 continue; /* Drop that and go ahead */
 556                         /*
 557                          * see if reply transaction id matches sent id.
 558                          * If so, decode the results. If return id is xid + 1
 559                          * it was a PORTMAP reply
 560                          */
 561                         if (*((u_int32_t *)(void *)(inbuf)) ==
 562                             *((u_int32_t *)(void *)(outbuf))) {
 563                                 pmap_reply_flag = 0;
 564                                 msg.acpted_rply.ar_verf = _null_auth;
 565                                 msg.acpted_rply.ar_results.where =
 566                                         (caddr_t)(void *)&bres;
 567                                 msg.acpted_rply.ar_results.proc =
 568                                         (xdrproc_t)xdr_rpcb_rmtcallres;
 569 #ifdef PORTMAP
 570                         } else if (pmap_flag &&
 571                                 *((u_int32_t *)(void *)(inbuf)) ==
 572                                 *((u_int32_t *)(void *)(outbuf_pmap))) {
 573                                 pmap_reply_flag = 1;
 574                                 msg.acpted_rply.ar_verf = _null_auth;
 575                                 msg.acpted_rply.ar_results.where =
 576                                         (caddr_t)(void *)&bres_pmap;
 577                                 msg.acpted_rply.ar_results.proc =
 578                                         (xdrproc_t)xdr_rmtcallres;
 579 #endif                          /* PORTMAP */
 580                         } else
 581                                 continue;
 582                         xdrmem_create(xdrs, inbuf, (u_int)inlen, XDR_DECODE);
 583                         if (xdr_replymsg(xdrs, &msg)) {
 584                                 if ((msg.rm_reply.rp_stat == MSG_ACCEPTED) &&
 585                                     (msg.acpted_rply.ar_stat == SUCCESS)) {
 586                                         struct netbuf *np;
 587 #ifdef PORTMAP
 588                                         struct netbuf taddr;
 589                                         struct sockaddr_in sin;
 590
 591                                         if (pmap_flag && pmap_reply_flag) {
 592                                                 memcpy(&sin, &fdlist[i].raddr, sizeof(sin));
 593                                                 sin.sin_port = htons((u_short)port);
 594                                                 memcpy(&fdlist[i].raddr, &sin, sizeof(sin));
 595                                                 taddr.len = taddr.maxlen =
 596                                                     sizeof(fdlist[i].raddr);
 597                                                 taddr.buf = &fdlist[i].raddr;
 598                                                 done = (*eachresult)(resultsp,
 599                                                     &taddr, fdlist[i].nconf);
 600                                         } else {
 601 #endif                          /* PORTMAP */
 602 #ifdef RPC_DEBUG
 603                                                 fprintf(stderr, "uaddr %s\n",
 604                                                     uaddrp);
 605 #endif
 606                                                 np = uaddr2taddr(
 607                                                     fdlist[i].nconf, uaddrp);
 608                                                 done = (*eachresult)(resultsp,
 609                                                     np, fdlist[i].nconf);
 610                                                 free(np);
 611 #ifdef PORTMAP
 612                                         }
 613 #endif                          /* PORTMAP */
 614                                 }
 615                                 /* otherwise, we just ignore the errors ... */
 616                         }
 617                         /* else some kind of deserialization problem ... */
 618
 619                         xdrs->x_op = XDR_FREE;
 620                         msg.acpted_rply.ar_results.proc = (xdrproc_t) xdr_void;
 621                         (void) xdr_replymsg(xdrs, &msg);
 622                         (void) (*xresults)(xdrs, resultsp);
 623                         XDR_DESTROY(xdrs);
 624                         if (done) {
 625                                 stat = RPC_SUCCESS;
 626                                 goto done_broad;
 627                         } else {
 628                                 goto recv_again;
 629                         }
 630                 }               /* The recv for loop */
 631         }                       /* The giant for loop */
 632
 633 done_broad:
 634         if (inbuf)
 635                 (void) free(inbuf);
 636         if (outbuf)
 637                 (void) free(outbuf);
 638 #ifdef PORTMAP
 639         if (outbuf_pmap)
 640                 (void) free(outbuf_pmap);
 641 #endif                          /* PORTMAP */
 642         for (i = 0; i < fdlistno; i++) {
 643                 (void)close(fdlist[i].fd);
 644                 __rpc_freebroadifs(&fdlist[i].nal);
 645         }
 646         AUTH_DESTROY(sys_auth);
 647         (void) __rpc_endconf(handle);
 648
 649         return (stat);
 650 }
 651
 652
 653 enum clnt_stat
 654 rpc_broadcast(prog, vers, proc, xargs, argsp, xresults, resultsp,
 655                         eachresult, nettype)
 656         rpcprog_t       prog;           /* program number */
 657         rpcvers_t       vers;           /* version number */
 658         rpcproc_t       proc;           /* procedure number */
 659         xdrproc_t       xargs;          /* xdr routine for args */
 660         caddr_t         argsp;          /* pointer to args */
 661         xdrproc_t       xresults;       /* xdr routine for results */
 662         caddr_t         resultsp;       /* pointer to results */
 663         resultproc_t    eachresult;     /* call with each result obtained */
 664         const char              *nettype;       /* transport type */
 665 {
 666         enum clnt_stat  dummy;
 667
 668         dummy = rpc_broadcast_exp(prog, vers, proc, xargs, argsp,
 669                 xresults, resultsp, eachresult,
 670                 INITTIME, WAITTIME, nettype);
 671         return (dummy);
 672 }