lib/libc/rpc/clnt_bcast.c

   1 /*      $NetBSD: clnt_bcast.c,v 1.26 2013/03/11 20:19:28 tron Exp $     */
   2
   3 /*
   4  * Copyright (c) 2010, Oracle America, Inc.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions are
   8  * met:
   9  *
  10  *     * Redistributions of source code must retain the above copyright
  11  *       notice, this list of conditions and the following disclaimer.
  12  *     * Redistributions in binary form must reproduce the above
  13  *       copyright notice, this list of conditions and the following
  14  *       disclaimer in the documentation and/or other materials
  15  *       provided with the distribution.
  16  *     * Neither the name of the "Oracle America, 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
  21  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  22  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  23  *   FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  24  *   COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  25  *   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  *   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  27  *   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  28  *   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  29  *   WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  30  *   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33 /*
  34  * Copyright (c) 1986-1991 by Sun Microsystems Inc.
  35  */
  36
  37 /* #ident       "@(#)clnt_bcast.c       1.18    94/05/03 SMI" */
  38
  39 #include <sys/cdefs.h>
  40 #if defined(LIBC_SCCS) && !defined(lint)
  41 #if 0
  42 static char sccsid[] = "@(#)clnt_bcast.c 1.15 89/04/21 Copyr 1988 Sun Micro";
  43 #else
  44 __RCSID("$NetBSD: clnt_bcast.c,v 1.26 2013/03/11 20:19:28 tron Exp $");
  45 #endif
  46 #endif
  47
  48 /*
  49  * clnt_bcast.c
  50  * Client interface to broadcast service.
  51  *
  52  * Copyright (C) 1988, Sun Microsystems, Inc.
  53  *
  54  * The following is kludged-up support for simple rpc broadcasts.
  55  * Someday a large, complicated system will replace these routines.
  56  */
  57
  58 #include "namespace.h"
  59 #include <sys/types.h>
  60 #include <sys/socket.h>
  61 #include <sys/queue.h>
  62 #include <net/if.h>
  63 #include <netinet/in.h>
  64 #include <ifaddrs.h>
  65 #include <sys/poll.h>
  66 #include <rpc/rpc.h>
  67 #ifdef PORTMAP
  68 #include <rpc/pmap_prot.h>
  69 #include <rpc/pmap_clnt.h>
  70 #include <rpc/pmap_rmt.h>
  71 #endif
  72 #include <rpc/nettype.h>
  73 #include <arpa/inet.h>
  74 #ifdef RPC_DEBUG
  75 #include <stdio.h>
  76 #endif
  77 #include <assert.h>
  78 #include <errno.h>
  79 #include <stdlib.h>
  80 #include <unistd.h>
  81 #include <netdb.h>
  82 #include <err.h>
  83 #include <string.h>
  84
  85 #include "rpc_internal.h"
  86 #include "svc_fdset.h"
  87
  88 #define MAXBCAST 20     /* Max no of broadcasting transports */
  89 #define INITTIME 4000   /* Time to wait initially */
  90 #define WAITTIME 8000   /* Maximum time to wait */
  91
  92 /*
  93  * If nettype is NULL, it broadcasts on all the available
  94  * datagram_n transports. May potentially lead to broadacst storms
  95  * and hence should be used with caution, care and courage.
  96  *
  97  * The current parameter xdr packet size is limited by the max tsdu
  98  * size of the transport. If the max tsdu size of any transport is
  99  * smaller than the parameter xdr packet, then broadcast is not
 100  * sent on that transport.
 101  *
 102  * Also, the packet size should be less the packet size of
 103  * the data link layer (for ethernet it is 1400 bytes).  There is
 104  * no easy way to find out the max size of the data link layer and
 105  * we are assuming that the args would be smaller than that.
 106  *
 107  * The result size has to be smaller than the transport tsdu size.
 108  *
 109  * If PORTMAP has been defined, we send two packets for UDP, one for
 110  * rpcbind and one for portmap. For those machines which support
 111  * both rpcbind and portmap, it will cause them to reply twice, and
 112  * also here it will get two responses ... inefficient and clumsy.
 113  */
 114
 115 #ifdef __weak_alias
 116 __weak_alias(rpc_broadcast_exp,_rpc_broadcast_exp)
 117 __weak_alias(rpc_broadcast,_rpc_broadcast)
 118 #endif
 119
 120 struct broadif {
 121         int index;
 122         struct sockaddr_storage broadaddr;
 123         TAILQ_ENTRY(broadif) link;
 124 };
 125
 126 typedef TAILQ_HEAD(, broadif) broadlist_t;
 127
 128 int __rpc_getbroadifs(int, int, int, broadlist_t *);
 129 void __rpc_freebroadifs(broadlist_t *);
 130 int __rpc_broadenable(int, int, struct broadif *);
 131
 132 int __rpc_lowvers = 0;
 133
 134 int
 135 __rpc_getbroadifs(int af, int proto, int socktype, broadlist_t *list)
 136 {
 137         int count = 0;
 138         struct broadif *bip;
 139         struct ifaddrs *ifap, *ifp;
 140 #ifdef INET6
 141         struct sockaddr_in6 *sin6;
 142 #endif
 143         struct sockaddr_in *gbsin;
 144         struct addrinfo hints, *res;
 145
 146         _DIAGASSERT(list != NULL);
 147
 148         if (getifaddrs(&ifp) < 0)
 149                 return 0;
 150
 151         memset(&hints, 0, sizeof hints);
 152
 153         hints.ai_family = af;
 154         hints.ai_protocol = proto;
 155         hints.ai_socktype = socktype;
 156
 157         if (getaddrinfo(NULL, "sunrpc", &hints, &res) != 0) {
 158                 freeifaddrs(ifp);
 159                 return 0;
 160         }
 161
 162         for (ifap = ifp; ifap != NULL; ifap = ifap->ifa_next) {
 163                 if (ifap->ifa_addr->sa_family != af ||
 164                     !(ifap->ifa_flags & IFF_UP))
 165                         continue;
 166                 bip = malloc(sizeof(*bip));
 167                 if (bip == NULL)
 168                         break;
 169                 bip->index = if_nametoindex(ifap->ifa_name);
 170                 if (
 171 #ifdef INET6
 172                     af != AF_INET6 &&
 173 #endif
 174                     (ifap->ifa_flags & IFF_BROADCAST) &&
 175                     ifap->ifa_broadaddr) {
 176                         memcpy(&bip->broadaddr, ifap->ifa_broadaddr,
 177                             (size_t)ifap->ifa_broadaddr->sa_len);
 178                         gbsin = (struct sockaddr_in *)(void *)&bip->broadaddr;
 179                         gbsin->sin_port =
 180                             ((struct sockaddr_in *)
 181                             (void *)res->ai_addr)->sin_port;
 182                 } else
 183 #ifdef INET6
 184                 if (af == AF_INET6 && (ifap->ifa_flags & IFF_MULTICAST)) {
 185                         sin6 = (struct sockaddr_in6 *)(void *)&bip->broadaddr;
 186                         inet_pton(af, RPCB_MULTICAST_ADDR, &sin6->sin6_addr);
 187                         sin6->sin6_family = af;
 188                         sin6->sin6_len = sizeof *sin6;
 189                         sin6->sin6_port =
 190                             ((struct sockaddr_in6 *)
 191                             (void *)res->ai_addr)->sin6_port;
 192                         sin6->sin6_scope_id = bip->index;
 193                 } else
 194 #endif
 195                 {
 196                         free(bip);
 197                         continue;
 198                 }
 199                 TAILQ_INSERT_TAIL(list, bip, link);
 200                 count++;
 201         }
 202         freeifaddrs(ifp);
 203         freeaddrinfo(res);
 204
 205         return count;
 206 }
 207
 208 void
 209 __rpc_freebroadifs(broadlist_t *list)
 210 {
 211         struct broadif *bip, *next;
 212
 213         _DIAGASSERT(list != NULL);
 214
 215         bip = TAILQ_FIRST(list);
 216
 217         while (bip != NULL) {
 218                 next = TAILQ_NEXT(bip, link);
 219                 free(bip);
 220                 bip = next;
 221         }
 222 }
 223
 224 int
 225 /*ARGSUSED*/
 226 __rpc_broadenable(int af, int s, struct broadif *bip)
 227 {
 228         int o = 1;
 229
 230 #if 0
 231         _DIAGASSERT(bip != NULL);
 232
 233         if (af == AF_INET6) {
 234                 fprintf(stderr, "set v6 multicast if to %d\n", bip->index);
 235                 if (setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_IF, &bip->index,
 236                     sizeof bip->index) < 0)
 237                         return -1;
 238         } else
 239 #endif
 240                 if (setsockopt(s, SOL_SOCKET, SO_BROADCAST, &o,
 241                     (socklen_t)sizeof(o)) == -1)
 242                         return -1;
 243
 244         return 0;
 245 }
 246
 247
 248 enum clnt_stat
 249 rpc_broadcast_exp(
 250         rpcprog_t       prog,           /* program number */
 251         rpcvers_t       vers,           /* version number */
 252         rpcproc_t       proc,           /* procedure number */
 253         xdrproc_t       xargs,          /* xdr routine for args */
 254         const char *    argsp,          /* pointer to args */
 255         xdrproc_t       xresults,       /* xdr routine for results */
 256         caddr_t         resultsp,       /* pointer to results */
 257         resultproc_t    eachresult,     /* call with each result obtained */
 258         int             inittime,       /* how long to wait initially */
 259         int             waittime,       /* maximum time to wait */
 260         const char *    nettype)        /* transport type */
 261 {
 262         enum clnt_stat  stat = RPC_SUCCESS; /* Return status */
 263         XDR             xdr_stream; /* XDR stream */
 264         XDR             *xdrs = &xdr_stream;
 265         struct rpc_msg  msg;    /* RPC message */
 266         char            *outbuf = NULL; /* Broadcast msg buffer */
 267         char            *inbuf = NULL; /* Reply buf */
 268         ssize_t         inlen;
 269         u_int           maxbufsize = 0;
 270         AUTH            *sys_auth = authunix_create_default();
 271         size_t          i;
 272         void            *handle;
 273         char            uaddress[1024]; /* A self imposed limit */
 274         char            *uaddrp = uaddress;
 275         int             pmap_reply_flag; /* reply recvd from PORTMAP */
 276         /* An array of all the suitable broadcast transports */
 277         struct {
 278                 int fd;         /* File descriptor */
 279                 int af;
 280                 int proto;
 281                 struct netconfig *nconf; /* Netconfig structure */
 282                 u_int asize;    /* Size of the addr buf */
 283                 u_int dsize;    /* Size of the data buf */
 284                 struct sockaddr_storage raddr; /* Remote address */
 285                 broadlist_t nal;
 286         } fdlist[MAXBCAST];
 287         struct pollfd pfd[MAXBCAST];
 288         nfds_t fdlistno = 0;
 289         struct r_rpcb_rmtcallargs barg; /* Remote arguments */
 290         struct r_rpcb_rmtcallres bres; /* Remote results */
 291         size_t outlen;
 292         struct netconfig *nconf;
 293         int msec;
 294         int pollretval;
 295         int fds_found;
 296         struct timespec ts;
 297
 298 #ifdef PORTMAP
 299         size_t outlen_pmap = 0;
 300         u_long port;            /* Remote port number */
 301         int pmap_flag = 0;      /* UDP exists ? */
 302         char *outbuf_pmap = NULL;
 303         struct rmtcallargs barg_pmap;   /* Remote arguments */
 304         struct rmtcallres bres_pmap; /* Remote results */
 305         u_int udpbufsz = 0;
 306 #endif                          /* PORTMAP */
 307
 308         if (sys_auth == NULL) {
 309                 return (RPC_SYSTEMERROR);
 310         }
 311         /*
 312          * initialization: create a fd, a broadcast address, and send the
 313          * request on the broadcast transport.
 314          * Listen on all of them and on replies, call the user supplied
 315          * function.
 316          */
 317
 318         if (nettype == NULL)
 319                 nettype = "datagram_n";
 320         if ((handle = __rpc_setconf(nettype)) == NULL) {
 321                 AUTH_DESTROY(sys_auth);
 322                 return (RPC_UNKNOWNPROTO);
 323         }
 324         while ((nconf = __rpc_getconf(handle)) != NULL) {
 325                 int fd;
 326                 struct __rpc_sockinfo si;
 327
 328                 if (nconf->nc_semantics != NC_TPI_CLTS)
 329                         continue;
 330                 if (fdlistno >= MAXBCAST)
 331                         break;  /* No more slots available */
 332                 if (!__rpc_nconf2sockinfo(nconf, &si))
 333                         continue;
 334
 335                 TAILQ_INIT(&fdlist[fdlistno].nal);
 336                 if (__rpc_getbroadifs(si.si_af, si.si_proto, si.si_socktype,
 337                     &fdlist[fdlistno].nal) == 0)
 338                         continue;
 339
 340                 fd = socket(si.si_af, si.si_socktype, si.si_proto);
 341                 if (fd < 0) {
 342                         stat = RPC_CANTSEND;
 343                         continue;
 344                 }
 345                 fdlist[fdlistno].af = si.si_af;
 346                 fdlist[fdlistno].proto = si.si_proto;
 347                 fdlist[fdlistno].fd = fd;
 348                 fdlist[fdlistno].nconf = nconf;
 349                 fdlist[fdlistno].asize = __rpc_get_a_size(si.si_af);
 350                 pfd[fdlistno].events = POLLIN | POLLPRI |
 351                         POLLRDNORM | POLLRDBAND;
 352                 pfd[fdlistno].fd = fdlist[fdlistno].fd = fd;
 353                 fdlist[fdlistno].dsize = __rpc_get_t_size(si.si_af, si.si_proto,
 354                                                           0);
 355
 356                 if (maxbufsize <= fdlist[fdlistno].dsize)
 357                         maxbufsize = fdlist[fdlistno].dsize;
 358
 359 #ifdef PORTMAP
 360                 if (si.si_af == AF_INET && si.si_proto == IPPROTO_UDP) {
 361                         udpbufsz = fdlist[fdlistno].dsize;
 362                         if ((outbuf_pmap = malloc(udpbufsz)) == NULL) {
 363                                 close(fd);
 364                                 stat = RPC_SYSTEMERROR;
 365                                 goto done_broad;
 366                         }
 367                         pmap_flag = 1;
 368                 }
 369 #endif
 370                 fdlistno++;
 371         }
 372
 373         if (fdlistno == 0) {
 374                 if (stat == RPC_SUCCESS)
 375                         stat = RPC_UNKNOWNPROTO;
 376                 goto done_broad;
 377         }
 378         if (maxbufsize == 0) {
 379                 if (stat == RPC_SUCCESS)
 380                         stat = RPC_CANTSEND;
 381                 goto done_broad;
 382         }
 383         inbuf = malloc(maxbufsize);
 384         outbuf = malloc(maxbufsize);
 385         if ((inbuf == NULL) || (outbuf == NULL)) {
 386                 stat = RPC_SYSTEMERROR;
 387                 goto done_broad;
 388         }
 389
 390         /* Serialize all the arguments which have to be sent */
 391         msg.rm_xid = __RPC_GETXID();
 392         msg.rm_direction = CALL;
 393         msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
 394         msg.rm_call.cb_prog = RPCBPROG;
 395         msg.rm_call.cb_vers = RPCBVERS;
 396         msg.rm_call.cb_proc = RPCBPROC_CALLIT;
 397         barg.prog = prog;
 398         barg.vers = vers;
 399         barg.proc = proc;
 400         barg.args.args_val = argsp;
 401         barg.xdr_args = xargs;
 402         bres.addr = uaddrp;
 403         bres.results.results_val = resultsp;
 404         bres.xdr_res = xresults;
 405         msg.rm_call.cb_cred = sys_auth->ah_cred;
 406         msg.rm_call.cb_verf = sys_auth->ah_verf;
 407         xdrmem_create(xdrs, outbuf, maxbufsize, XDR_ENCODE);
 408         if ((!xdr_callmsg(xdrs, &msg)) ||
 409             (!xdr_rpcb_rmtcallargs(xdrs,
 410             (struct rpcb_rmtcallargs *)(void *)&barg))) {
 411                 stat = RPC_CANTENCODEARGS;
 412                 goto done_broad;
 413         }
 414         outlen = xdr_getpos(xdrs);
 415         xdr_destroy(xdrs);
 416
 417 #ifdef PORTMAP
 418         /* Prepare the packet for version 2 PORTMAP */
 419         if (pmap_flag) {
 420                 msg.rm_xid++;   /* One way to distinguish */
 421                 msg.rm_call.cb_prog = PMAPPROG;
 422                 msg.rm_call.cb_vers = PMAPVERS;
 423                 msg.rm_call.cb_proc = PMAPPROC_CALLIT;
 424                 barg_pmap.prog = prog;
 425                 barg_pmap.vers = vers;
 426                 barg_pmap.proc = proc;
 427                 barg_pmap.args_ptr = argsp;
 428                 barg_pmap.xdr_args = xargs;
 429                 bres_pmap.port_ptr = &port;
 430                 bres_pmap.xdr_results = xresults;
 431                 bres_pmap.results_ptr = resultsp;
 432                 xdrmem_create(xdrs, outbuf_pmap, udpbufsz, XDR_ENCODE);
 433                 if ((! xdr_callmsg(xdrs, &msg)) ||
 434                     (! xdr_rmtcall_args(xdrs, &barg_pmap))) {
 435                         stat = RPC_CANTENCODEARGS;
 436                         goto done_broad;
 437                 }
 438                 outlen_pmap = xdr_getpos(xdrs);
 439                 xdr_destroy(xdrs);
 440         }
 441 #endif                          /* PORTMAP */
 442
 443         /*
 444          * Basic loop: broadcast the packets to transports which
 445          * support data packets of size such that one can encode
 446          * all the arguments.
 447          * Wait a while for response(s).
 448          * The response timeout grows larger per iteration.
 449          */
 450         for (msec = inittime; msec <= waittime; msec += msec) {
 451                 struct broadif *bip;
 452
 453                 /* Broadcast all the packets now */
 454                 for (i = 0; i < fdlistno; i++) {
 455                         if (fdlist[i].dsize < outlen) {
 456                                 stat = RPC_CANTSEND;
 457                                 continue;
 458                         }
 459                         for (bip = TAILQ_FIRST(&fdlist[i].nal); bip != NULL;
 460                              bip = TAILQ_NEXT(bip, link)) {
 461                                 void *addr;
 462
 463                                 addr = &bip->broadaddr;
 464
 465                                 __rpc_broadenable(fdlist[i].af, fdlist[i].fd,
 466                                     bip);
 467
 468                                 /*
 469                                  * Only use version 3 if lowvers is not set
 470                                  */
 471
 472                                 if (!__rpc_lowvers)
 473                                         if ((size_t)sendto(fdlist[i].fd, outbuf,
 474                                             outlen, 0, (struct sockaddr*)addr,
 475                                             (socklen_t)fdlist[i].asize) !=
 476                                             outlen) {
 477                                                 warn("clnt_bcast: cannot send"
 478                                                       " broadcast packet");
 479                                                 stat = RPC_CANTSEND;
 480                                                 continue;
 481                                         }
 482 #ifdef RPC_DEBUG
 483                                 if (!__rpc_lowvers)
 484                                         fprintf(stderr, "Broadcast packet sent "
 485                                                 "for %s\n",
 486                                                  fdlist[i].nconf->nc_netid);
 487 #endif
 488 #ifdef PORTMAP
 489                                 /*
 490                                  * Send the version 2 packet also
 491                                  * for UDP/IP
 492                                  */
 493                                 if (pmap_flag &&
 494                                     fdlist[i].proto == IPPROTO_UDP) {
 495                                         if ((size_t)sendto(fdlist[i].fd,
 496                                             outbuf_pmap, outlen_pmap, 0, addr,
 497                                             (socklen_t)fdlist[i].asize) !=
 498                                                 outlen_pmap) {
 499                                                 warnx("clnt_bcast: "
 500                                                     "Cannot send "
 501                                                     "broadcast packet");
 502                                                 stat = RPC_CANTSEND;
 503                                                 continue;
 504                                         }
 505                                 }
 506 #ifdef RPC_DEBUG
 507                                 fprintf(stderr, "PMAP Broadcast packet "
 508                                         "sent for %s\n",
 509                                         fdlist[i].nconf->nc_netid);
 510 #endif
 511 #endif                          /* PORTMAP */
 512                         }
 513                         /* End for sending all packets on this transport */
 514                 }       /* End for sending on all transports */
 515
 516                 if (eachresult == NULL) {
 517                         stat = RPC_SUCCESS;
 518                         goto done_broad;
 519                 }
 520
 521                 /*
 522                  * Get all the replies from these broadcast requests
 523                  */
 524         recv_again:
 525                 ts.tv_sec = msec / 1000;
 526                 ts.tv_nsec = (msec % 1000) * 1000000;
 527
 528                 switch (pollretval = pollts(pfd, fdlistno, &ts, NULL)) {
 529                 case 0:         /* timed out */
 530                         stat = RPC_TIMEDOUT;
 531                         continue;
 532                 case -1:        /* some kind of error - we ignore it */
 533                         goto recv_again;
 534                 }               /* end of poll results switch */
 535
 536                 for (i = fds_found = 0;
 537                      i < fdlistno && fds_found < pollretval; i++) {
 538                         bool_t done = FALSE;
 539
 540                         if (pfd[i].revents == 0)
 541                                 continue;
 542                         else if (pfd[i].revents & POLLNVAL) {
 543                                 /*
 544                                  * Something bad has happened to this descri-
 545                                  * ptor. We can cause pollts() to ignore
 546                                  * it simply by using a negative fd.  We do that
 547                                  * rather than compacting the pfd[] and fdlist[]
 548                                  * arrays.
 549                                  */
 550                                 pfd[i].fd = -1;
 551                                 fds_found++;
 552                                 continue;
 553                         } else
 554                                 fds_found++;
 555 #ifdef RPC_DEBUG
 556                         fprintf(stderr, "response for %s\n",
 557                                 fdlist[i].nconf->nc_netid);
 558 #endif
 559                 try_again:
 560                         inlen = recvfrom(fdlist[i].fd, inbuf, fdlist[i].dsize,
 561                             0, (struct sockaddr *)(void *)&fdlist[i].raddr,
 562                             &fdlist[i].asize);
 563                         if (inlen < 0) {
 564                                 if (errno == EINTR)
 565                                         goto try_again;
 566                                 warnx("clnt_bcast: Cannot receive reply to "
 567                                         "broadcast");
 568                                 stat = RPC_CANTRECV;
 569                                 continue;
 570                         }
 571                         if (inlen < (ssize_t)sizeof(u_int32_t))
 572                                 continue; /* Drop that and go ahead */
 573                         /*
 574                          * see if reply transaction id matches sent id.
 575                          * If so, decode the results. If return id is xid + 1
 576                          * it was a PORTMAP reply
 577                          */
 578                         if (*((u_int32_t *)(void *)(inbuf)) ==
 579                             *((u_int32_t *)(void *)(outbuf))) {
 580                                 pmap_reply_flag = 0;
 581                                 msg.acpted_rply.ar_verf = _null_auth;
 582                                 msg.acpted_rply.ar_results.where =
 583                                         (caddr_t)(void *)&bres;
 584                                 msg.acpted_rply.ar_results.proc =
 585                                         (xdrproc_t)xdr_rpcb_rmtcallres;
 586 #ifdef PORTMAP
 587                         } else if (pmap_flag &&
 588                                 *((u_int32_t *)(void *)(inbuf)) ==
 589                                 *((u_int32_t *)(void *)(outbuf_pmap))) {
 590                                 pmap_reply_flag = 1;
 591                                 msg.acpted_rply.ar_verf = _null_auth;
 592                                 msg.acpted_rply.ar_results.where =
 593                                         (caddr_t)(void *)&bres_pmap;
 594                                 msg.acpted_rply.ar_results.proc =
 595                                         (xdrproc_t)xdr_rmtcallres;
 596 #endif                          /* PORTMAP */
 597                         } else
 598                                 continue;
 599                         xdrmem_create(xdrs, inbuf, (u_int)inlen, XDR_DECODE);
 600                         if (xdr_replymsg(xdrs, &msg)) {
 601                                 if ((msg.rm_reply.rp_stat == MSG_ACCEPTED) &&
 602                                     (msg.acpted_rply.ar_stat == SUCCESS)) {
 603                                         struct netbuf taddr, *np;
 604                                         struct sockaddr_in *bsin;
 605
 606 #ifdef PORTMAP
 607                                         if (pmap_flag && pmap_reply_flag) {
 608                                                 bsin = (struct sockaddr_in *)
 609                                                     (void *)&fdlist[i].raddr;
 610                                                 bsin->sin_port =
 611                                                     htons((u_short)port);
 612                                                 taddr.len = taddr.maxlen =
 613                                                     fdlist[i].raddr.ss_len;
 614                                                 taddr.buf = &fdlist[i].raddr;
 615                                                 done = (*eachresult)(resultsp,
 616                                                     &taddr, fdlist[i].nconf);
 617                                         } else {
 618 #endif
 619 #ifdef RPC_DEBUG
 620                                                 fprintf(stderr, "uaddr %s\n",
 621                                                     uaddrp);
 622 #endif
 623                                                 np = uaddr2taddr(
 624                                                     fdlist[i].nconf, uaddrp);
 625                                                 done = (*eachresult)(resultsp,
 626                                                     np, fdlist[i].nconf);
 627                                                 free(np);
 628 #ifdef PORTMAP
 629                                         }
 630 #endif
 631                                 }
 632                                 /* otherwise, we just ignore the errors ... */
 633                         }
 634                         /* else some kind of deserialization problem ... */
 635
 636                         xdrs->x_op = XDR_FREE;
 637                         msg.acpted_rply.ar_results.proc = (xdrproc_t) xdr_void;
 638                         (void) xdr_replymsg(xdrs, &msg);
 639                         (void) (*xresults)(xdrs, resultsp);
 640                         XDR_DESTROY(xdrs);
 641                         if (done) {
 642                                 stat = RPC_SUCCESS;
 643                                 goto done_broad;
 644                         } else {
 645                                 goto recv_again;
 646                         }
 647                 }               /* The recv for loop */
 648         }                       /* The giant for loop */
 649
 650 done_broad:
 651         if (inbuf)
 652                 (void) free(inbuf);
 653         if (outbuf)
 654                 (void) free(outbuf);
 655 #ifdef PORTMAP
 656         if (outbuf_pmap)
 657                 (void) free(outbuf_pmap);
 658 #endif
 659         for (i = 0; i < fdlistno; i++) {
 660                 (void) close(fdlist[i].fd);
 661                 __rpc_freebroadifs(&fdlist[i].nal);
 662         }
 663         AUTH_DESTROY(sys_auth);
 664         (void) __rpc_endconf(handle);
 665
 666         return (stat);
 667 }
 668
 669
 670 enum clnt_stat
 671 rpc_broadcast(
 672         rpcprog_t       prog,           /* program number */
 673         rpcvers_t       vers,           /* version number */
 674         rpcproc_t       proc,           /* procedure number */
 675         xdrproc_t       xargs,          /* xdr routine for args */
 676         const char *    argsp,          /* pointer to args */
 677         xdrproc_t       xresults,       /* xdr routine for results */
 678         caddr_t         resultsp,       /* pointer to results */
 679         resultproc_t    eachresult,     /* call with each result obtained */
 680         const char *    nettype)        /* transport type */
 681 {
 682         enum clnt_stat  dummy;
 683
 684         dummy = rpc_broadcast_exp(prog, vers, proc, xargs, argsp,
 685                 xresults, resultsp, eachresult,
 686                 INITTIME, WAITTIME, nettype);
 687         return (dummy);
 688 }