lib/libc/rpc/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  * @(#)clnt_bcast.c     1.18    94/05/03 SMI; 1.15 89/04/21 Copyr 1988 Sun Micro
  29  * $NetBSD: clnt_bcast.c,v 1.3 2000/07/06 03:05:20 christos Exp $
  30  * $FreeBSD: src/lib/libc/rpc/clnt_bcast.c,v 1.9 2006/09/09 22:14:42 mbr Exp $
  31  */
  32 /*
  33  * Copyright (c) 1986-1991 by Sun Microsystems Inc.
  34  */
  35
  36 /*
  37  * clnt_bcast.c
  38  * Client interface to broadcast service.
  39  *
  40  * Copyright (C) 1988, Sun Microsystems, Inc.
  41  *
  42  * The following is kludged-up support for simple rpc broadcasts.
  43  * Someday a large, complicated system will replace these routines.
  44  */
  45
  46 #include "namespace.h"
  47 #include <sys/types.h>
  48 #include <sys/socket.h>
  49 #include <sys/queue.h>
  50 #include <net/if.h>
  51 #include <netinet/in.h>
  52 #include <ifaddrs.h>
  53 #include <sys/poll.h>
  54 #include <rpc/rpc.h>
  55 #ifdef PORTMAP
  56 #include <rpc/pmap_prot.h>
  57 #include <rpc/pmap_clnt.h>
  58 #include <rpc/pmap_rmt.h>
  59 #endif                          /* PORTMAP */
  60 #include <rpc/nettype.h>
  61 #include <arpa/inet.h>
  62 #ifdef RPC_DEBUG
  63 #include <stdio.h>
  64 #endif
  65 #include <errno.h>
  66 #include <stdlib.h>
  67 #include <unistd.h>
  68 #include <netdb.h>
  69 #include <err.h>
  70 #include <string.h>
  71 #include "un-namespace.h"
  72
  73 #include "rpc_com.h"
  74
  75 #define MAXBCAST 20     /* Max no of broadcasting transports */
  76 #define INITTIME 4000   /* Time to wait initially */
  77 #define WAITTIME 8000   /* Maximum time to wait */
  78
  79 /*
  80  * If nettype is NULL, it broadcasts on all the available
  81  * datagram_n transports. May potentially lead to broadacst storms
  82  * and hence should be used with caution, care and courage.
  83  *
  84  * The current parameter xdr packet size is limited by the max tsdu
  85  * size of the transport. If the max tsdu size of any transport is
  86  * smaller than the parameter xdr packet, then broadcast is not
  87  * sent on that transport.
  88  *
  89  * Also, the packet size should be less the packet size of
  90  * the data link layer (for ethernet it is 1400 bytes).  There is
  91  * no easy way to find out the max size of the data link layer and
  92  * we are assuming that the args would be smaller than that.
  93  *
  94  * The result size has to be smaller than the transport tsdu size.
  95  *
  96  * If PORTMAP has been defined, we send two packets for UDP, one for
  97  * rpcbind and one for portmap. For those machines which support
  98  * both rpcbind and portmap, it will cause them to reply twice, and
  99  * also here it will get two responses ... inefficient and clumsy.
 100  */
 101
 102 struct broadif {
 103         int index;
 104         struct sockaddr_storage broadaddr;
 105         TAILQ_ENTRY(broadif) link;
 106 };
 107
 108 typedef TAILQ_HEAD(, broadif) broadlist_t;
 109
 110 int     __rpc_broadenable(int, int, struct broadif *);
 111 void    __rpc_freebroadifs(broadlist_t *);
 112 int     __rpc_getbroadifs(int, int, int, broadlist_t *);
 113
 114 int __rpc_lowvers = 0;
 115
 116 int
 117 __rpc_getbroadifs(int af, int proto, int socktype, broadlist_t *list)
 118 {
 119         int count = 0;
 120         struct broadif *bip;
 121         struct ifaddrs *ifap, *ifp;
 122 #ifdef INET6
 123         struct sockaddr_in6 *sin6;
 124 #endif
 125         struct sockaddr_in *sin;
 126         struct addrinfo hints, *res;
 127
 128         if (getifaddrs(&ifp) < 0)
 129                 return 0;
 130
 131         memset(&hints, 0, sizeof hints);
 132
 133         hints.ai_family = af;
 134         hints.ai_protocol = proto;
 135         hints.ai_socktype = socktype;
 136
 137         if (getaddrinfo(NULL, "sunrpc", &hints, &res) != 0) {
 138                 freeifaddrs(ifp);
 139                 return 0;
 140         }
 141
 142         for (ifap = ifp; ifap != NULL; ifap = ifap->ifa_next) {
 143                 if (ifap->ifa_addr->sa_family != af ||
 144                     !(ifap->ifa_flags & IFF_UP))
 145                         continue;
 146                 bip = (struct broadif *)malloc(sizeof *bip);
 147                 if (bip == NULL)
 148                         break;
 149                 bip->index = if_nametoindex(ifap->ifa_name);
 150                 if (
 151 #ifdef INET6
 152                 af != AF_INET6 &&
 153 #endif
 154                 (ifap->ifa_flags & IFF_BROADCAST) &&
 155                  ifap->ifa_broadaddr) {
 156                         memcpy(&bip->broadaddr, ifap->ifa_broadaddr,
 157                             (size_t)ifap->ifa_broadaddr->sa_len);
 158                         sin = (struct sockaddr_in *)(void *)&bip->broadaddr;
 159                         sin->sin_port =
 160                             ((struct sockaddr_in *)
 161                             (void *)res->ai_addr)->sin_port;
 162                 } else
 163 #ifdef INET6
 164                 if (af == AF_INET6 && (ifap->ifa_flags & IFF_MULTICAST)) {
 165                         sin6 = (struct sockaddr_in6 *)(void *)&bip->broadaddr;
 166                         inet_pton(af, RPCB_MULTICAST_ADDR, &sin6->sin6_addr);
 167                         sin6->sin6_family = af;
 168                         sin6->sin6_len = sizeof *sin6;
 169                         sin6->sin6_port =
 170                             ((struct sockaddr_in6 *)
 171                             (void *)res->ai_addr)->sin6_port;
 172                         sin6->sin6_scope_id = bip->index;
 173                 } else
 174 #endif
 175                 {
 176                         free(bip);
 177                         continue;
 178                 }
 179                 TAILQ_INSERT_TAIL(list, bip, link);
 180                 count++;
 181         }
 182         freeifaddrs(ifp);
 183         freeaddrinfo(res);
 184
 185         return count;
 186 }
 187
 188 void
 189 __rpc_freebroadifs(broadlist_t *list)
 190 {
 191         struct broadif *bip, *next;
 192
 193         bip = TAILQ_FIRST(list);
 194
 195         while (bip != NULL) {
 196                 next = TAILQ_NEXT(bip, link);
 197                 free(bip);
 198                 bip = next;
 199         }
 200 }
 201
 202 int
 203 /*ARGSUSED*/
 204 __rpc_broadenable(int af __unused, int s, struct broadif *bip __unused)
 205 {
 206         int o = 1;
 207
 208 #if 0
 209         if (af == AF_INET6) {
 210                 fprintf(stderr, "set v6 multicast if to %d\n", bip->index);
 211                 if (_setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_IF, &bip->index,
 212                     sizeof bip->index) < 0)
 213                         return -1;
 214         } else
 215 #endif
 216                 if (_setsockopt(s, SOL_SOCKET, SO_BROADCAST, &o, sizeof o) < 0)
 217                         return -1;
 218
 219         return 0;
 220 }
 221
 222
 223 enum clnt_stat
 224 rpc_broadcast_exp(
 225     rpcprog_t           prog,           /* program number */
 226     rpcvers_t           vers,           /* version number */
 227     rpcproc_t           proc,           /* procedure number */
 228     xdrproc_t           xargs,          /* xdr routine for args */
 229     caddr_t             argsp,          /* pointer to args */
 230     xdrproc_t           xresults,       /* xdr routine for results */
 231     caddr_t             resultsp,       /* pointer to results */
 232     resultproc_t        eachresult,     /* call with each result obtained */
 233     int                 inittime,       /* how long to wait initially */
 234     int                 waittime,       /* maximum time to wait */
 235     const char          *nettype        /* transport type */
 236 )
 237 {
 238         enum clnt_stat  stat = RPC_SUCCESS; /* Return status */
 239         XDR             xdr_stream; /* XDR stream */
 240         XDR             *xdrs = &xdr_stream;
 241         struct rpc_msg  msg;    /* RPC message */
 242         struct timeval  t;
 243         char            *outbuf = NULL; /* Broadcast msg buffer */
 244         char            *inbuf = NULL; /* Reply buf */
 245         int             inlen;
 246         u_int           maxbufsize = 0;
 247         AUTH            *sys_auth = authunix_create_default();
 248         int             i;
 249         void            *handle;
 250         char            uaddress[1024]; /* A self imposed limit */
 251         char            *uaddrp = uaddress;
 252         int             pmap_reply_flag; /* reply recvd from PORTMAP */
 253         /* An array of all the suitable broadcast transports */
 254         struct {
 255                 int fd;         /* File descriptor */
 256                 int af;
 257                 int proto;
 258                 struct netconfig *nconf; /* Netconfig structure */
 259                 u_int asize;    /* Size of the addr buf */
 260                 u_int dsize;    /* Size of the data buf */
 261                 struct sockaddr_storage raddr; /* Remote address */
 262                 broadlist_t nal;
 263         } fdlist[MAXBCAST];
 264         struct pollfd pfd[MAXBCAST];
 265         size_t fdlistno = 0;
 266         struct r_rpcb_rmtcallargs barg; /* Remote arguments */
 267         struct r_rpcb_rmtcallres bres; /* Remote results */
 268         size_t outlen;
 269         struct netconfig *nconf;
 270         int msec;
 271         int pollretval;
 272         int fds_found;
 273
 274 #ifdef PORTMAP
 275         size_t outlen_pmap = 0;
 276         u_long port;            /* Remote port number */
 277         int pmap_flag = 0;      /* UDP exists ? */
 278         char *outbuf_pmap = NULL;
 279         struct rmtcallargs barg_pmap;   /* Remote arguments */
 280         struct rmtcallres bres_pmap; /* Remote results */
 281         u_int udpbufsz = 0;
 282 #endif                          /* PORTMAP */
 283
 284         if (sys_auth == NULL) {
 285                 return (RPC_SYSTEMERROR);
 286         }
 287         /*
 288          * initialization: create a fd, a broadcast address, and send the
 289          * request on the broadcast transport.
 290          * Listen on all of them and on replies, call the user supplied
 291          * function.
 292          */
 293
 294         if (nettype == NULL)
 295                 nettype = "datagram_n";
 296         if ((handle = __rpc_setconf(nettype)) == NULL) {
 297                 AUTH_DESTROY(sys_auth);
 298                 return (RPC_UNKNOWNPROTO);
 299         }
 300         while ((nconf = __rpc_getconf(handle)) != NULL) {
 301                 int fd;
 302                 struct __rpc_sockinfo si;
 303
 304                 if (nconf->nc_semantics != NC_TPI_CLTS)
 305                         continue;
 306                 if (fdlistno >= MAXBCAST)
 307                         break;  /* No more slots available */
 308                 if (!__rpc_nconf2sockinfo(nconf, &si))
 309                         continue;
 310
 311                 TAILQ_INIT(&fdlist[fdlistno].nal);
 312                 if (__rpc_getbroadifs(si.si_af, si.si_proto, si.si_socktype,
 313                     &fdlist[fdlistno].nal) == 0)
 314                         continue;
 315
 316                 fd = _socket(si.si_af, si.si_socktype, si.si_proto);
 317                 if (fd < 0) {
 318                         stat = RPC_CANTSEND;
 319                         continue;
 320                 }
 321                 fdlist[fdlistno].af = si.si_af;
 322                 fdlist[fdlistno].proto = si.si_proto;
 323                 fdlist[fdlistno].fd = fd;
 324                 fdlist[fdlistno].nconf = nconf;
 325                 fdlist[fdlistno].asize = __rpc_get_a_size(si.si_af);
 326                 pfd[fdlistno].events = POLLIN | POLLPRI |
 327                         POLLRDNORM | POLLRDBAND;
 328                 pfd[fdlistno].fd = fdlist[fdlistno].fd = fd;
 329                 fdlist[fdlistno].dsize = __rpc_get_t_size(si.si_af, si.si_proto,
 330                                                           0);
 331
 332                 if (maxbufsize <= fdlist[fdlistno].dsize)
 333                         maxbufsize = fdlist[fdlistno].dsize;
 334
 335 #ifdef PORTMAP
 336                 if (si.si_af == AF_INET && si.si_proto == IPPROTO_UDP) {
 337                         udpbufsz = fdlist[fdlistno].dsize;
 338                         if ((outbuf_pmap = malloc(udpbufsz)) == NULL) {
 339                                 _close(fd);
 340                                 stat = RPC_SYSTEMERROR;
 341                                 goto done_broad;
 342                         }
 343                         pmap_flag = 1;
 344                 }
 345 #endif                          /* PORTMAP */
 346                 fdlistno++;
 347         }
 348
 349         if (fdlistno == 0) {
 350                 if (stat == RPC_SUCCESS)
 351                         stat = RPC_UNKNOWNPROTO;
 352                 goto done_broad;
 353         }
 354         if (maxbufsize == 0) {
 355                 if (stat == RPC_SUCCESS)
 356                         stat = RPC_CANTSEND;
 357                 goto done_broad;
 358         }
 359         inbuf = malloc(maxbufsize);
 360         outbuf = malloc(maxbufsize);
 361         if ((inbuf == NULL) || (outbuf == NULL)) {
 362                 stat = RPC_SYSTEMERROR;
 363                 goto done_broad;
 364         }
 365
 366         /* Serialize all the arguments which have to be sent */
 367         gettimeofday(&t, NULL);
 368         msg.rm_xid = __RPC_GETXID(&t);
 369         msg.rm_direction = CALL;
 370         msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
 371         msg.rm_call.cb_prog = RPCBPROG;
 372         msg.rm_call.cb_vers = RPCBVERS;
 373         msg.rm_call.cb_proc = RPCBPROC_CALLIT;
 374         barg.prog = prog;
 375         barg.vers = vers;
 376         barg.proc = proc;
 377         barg.args.args_val = argsp;
 378         barg.xdr_args = xargs;
 379         bres.addr = uaddrp;
 380         bres.results.results_val = resultsp;
 381         bres.xdr_res = xresults;
 382         msg.rm_call.cb_cred = sys_auth->ah_cred;
 383         msg.rm_call.cb_verf = sys_auth->ah_verf;
 384         xdrmem_create(xdrs, outbuf, maxbufsize, XDR_ENCODE);
 385         if ((!xdr_callmsg(xdrs, &msg)) ||
 386             (!xdr_rpcb_rmtcallargs(xdrs,
 387             (struct rpcb_rmtcallargs *)(void *)&barg))) {
 388                 stat = RPC_CANTENCODEARGS;
 389                 goto done_broad;
 390         }
 391         outlen = xdr_getpos(xdrs);
 392         xdr_destroy(xdrs);
 393
 394 #ifdef PORTMAP
 395         /* Prepare the packet for version 2 PORTMAP */
 396         if (pmap_flag) {
 397                 msg.rm_xid++;   /* One way to distinguish */
 398                 msg.rm_call.cb_prog = PMAPPROG;
 399                 msg.rm_call.cb_vers = PMAPVERS;
 400                 msg.rm_call.cb_proc = PMAPPROC_CALLIT;
 401                 barg_pmap.prog = prog;
 402                 barg_pmap.vers = vers;
 403                 barg_pmap.proc = proc;
 404                 barg_pmap.args_ptr = argsp;
 405                 barg_pmap.xdr_args = xargs;
 406                 bres_pmap.port_ptr = &port;
 407                 bres_pmap.xdr_results = xresults;
 408                 bres_pmap.results_ptr = resultsp;
 409                 xdrmem_create(xdrs, outbuf_pmap, udpbufsz, XDR_ENCODE);
 410                 if ((! xdr_callmsg(xdrs, &msg)) ||
 411                     (! xdr_rmtcall_args(xdrs, &barg_pmap))) {
 412                         stat = RPC_CANTENCODEARGS;
 413                         goto done_broad;
 414                 }
 415                 outlen_pmap = xdr_getpos(xdrs);
 416                 xdr_destroy(xdrs);
 417         }
 418 #endif                          /* PORTMAP */
 419
 420         /*
 421          * Basic loop: broadcast the packets to transports which
 422          * support data packets of size such that one can encode
 423          * all the arguments.
 424          * Wait a while for response(s).
 425          * The response timeout grows larger per iteration.
 426          */
 427         for (msec = inittime; msec <= waittime; msec += msec) {
 428                 struct broadif *bip;
 429
 430                 /* Broadcast all the packets now */
 431                 for (i = 0; i < fdlistno; i++) {
 432                         if (fdlist[i].dsize < outlen) {
 433                                 stat = RPC_CANTSEND;
 434                                 continue;
 435                         }
 436                         for (bip = TAILQ_FIRST(&fdlist[i].nal); bip != NULL;
 437                              bip = TAILQ_NEXT(bip, link)) {
 438                                 void *addr;
 439
 440                                 addr = &bip->broadaddr;
 441
 442                                 __rpc_broadenable(fdlist[i].af, fdlist[i].fd,
 443                                     bip);
 444
 445                                 /*
 446                                  * Only use version 3 if lowvers is not set
 447                                  */
 448
 449                                 if (!__rpc_lowvers)
 450                                         if (_sendto(fdlist[i].fd, outbuf,
 451                                             outlen, 0, (struct sockaddr*)addr,
 452                                             (size_t)fdlist[i].asize) !=
 453                                             outlen) {
 454 #ifdef RPC_DEBUG
 455                                                 perror("sendto");
 456 #endif
 457                                                 warnx("clnt_bcast: cannot send"
 458                                                       "broadcast packet");
 459                                                 stat = RPC_CANTSEND;
 460                                                 continue;
 461                                         }
 462 #ifdef RPC_DEBUG
 463                                 if (!__rpc_lowvers)
 464                                         fprintf(stderr, "Broadcast packet sent "
 465                                                 "for %s\n",
 466                                                  fdlist[i].nconf->nc_netid);
 467 #endif
 468 #ifdef PORTMAP
 469                                 /*
 470                                  * Send the version 2 packet also
 471                                  * for UDP/IP
 472                                  */
 473                                 if (pmap_flag &&
 474                                     fdlist[i].proto == IPPROTO_UDP) {
 475                                         if (_sendto(fdlist[i].fd, outbuf_pmap,
 476                                             outlen_pmap, 0, addr,
 477                                             (size_t)fdlist[i].asize) !=
 478                                                 outlen_pmap) {
 479                                                 warnx("clnt_bcast: "
 480                                                     "Cannot send broadcast packet");
 481                                                 stat = RPC_CANTSEND;
 482                                                 continue;
 483                                         }
 484                                 }
 485 #ifdef RPC_DEBUG
 486                                 fprintf(stderr, "PMAP Broadcast packet "
 487                                         "sent for %s\n",
 488                                         fdlist[i].nconf->nc_netid);
 489 #endif
 490 #endif                          /* PORTMAP */
 491                         }
 492                         /* End for sending all packets on this transport */
 493                 }       /* End for sending on all transports */
 494
 495                 if (eachresult == NULL) {
 496                         stat = RPC_SUCCESS;
 497                         goto done_broad;
 498                 }
 499
 500                 /*
 501                  * Get all the replies from these broadcast requests
 502                  */
 503         recv_again:
 504
 505                 switch (pollretval = _poll(pfd, fdlistno, msec)) {
 506                 case 0:         /* timed out */
 507                         stat = RPC_TIMEDOUT;
 508                         continue;
 509                 case -1:        /* some kind of error - we ignore it */
 510                         goto recv_again;
 511                 }               /* end of poll results switch */
 512
 513                 for (i = fds_found = 0;
 514                      i < fdlistno && fds_found < pollretval; i++) {
 515                         bool_t done = FALSE;
 516
 517                         if (pfd[i].revents == 0)
 518                                 continue;
 519                         else if (pfd[i].revents & POLLNVAL) {
 520                                 /*
 521                                  * Something bad has happened to this descri-
 522                                  * ptor. We can cause _poll() to ignore
 523                                  * it simply by using a negative fd.  We do that
 524                                  * rather than compacting the pfd[] and fdlist[]
 525                                  * arrays.
 526                                  */
 527                                 pfd[i].fd = -1;
 528                                 fds_found++;
 529                                 continue;
 530                         } else
 531                                 fds_found++;
 532 #ifdef RPC_DEBUG
 533                         fprintf(stderr, "response for %s\n",
 534                                 fdlist[i].nconf->nc_netid);
 535 #endif
 536                 try_again:
 537                         inlen = _recvfrom(fdlist[i].fd, inbuf, fdlist[i].dsize,
 538                             0, (struct sockaddr *)(void *)&fdlist[i].raddr,
 539                             &fdlist[i].asize);
 540                         if (inlen < 0) {
 541                                 if (errno == EINTR)
 542                                         goto try_again;
 543                                 warnx("clnt_bcast: Cannot receive reply to "
 544                                         "broadcast");
 545                                 stat = RPC_CANTRECV;
 546                                 continue;
 547                         }
 548                         if (inlen < sizeof (u_int32_t))
 549                                 continue; /* Drop that and go ahead */
 550                         /*
 551                          * see if reply transaction id matches sent id.
 552                          * If so, decode the results. If return id is xid + 1
 553                          * it was a PORTMAP reply
 554                          */
 555                         if (*((u_int32_t *)(void *)(inbuf)) ==
 556                             *((u_int32_t *)(void *)(outbuf))) {
 557                                 pmap_reply_flag = 0;
 558                                 msg.acpted_rply.ar_verf = _null_auth;
 559                                 msg.acpted_rply.ar_results.where =
 560                                         (caddr_t)(void *)&bres;
 561                                 msg.acpted_rply.ar_results.proc =
 562                                         (xdrproc_t)xdr_rpcb_rmtcallres;
 563 #ifdef PORTMAP
 564                         } else if (pmap_flag &&
 565                                 *((u_int32_t *)(void *)(inbuf)) ==
 566                                 *((u_int32_t *)(void *)(outbuf_pmap))) {
 567                                 pmap_reply_flag = 1;
 568                                 msg.acpted_rply.ar_verf = _null_auth;
 569                                 msg.acpted_rply.ar_results.where =
 570                                         (caddr_t)(void *)&bres_pmap;
 571                                 msg.acpted_rply.ar_results.proc =
 572                                         (xdrproc_t)xdr_rmtcallres;
 573 #endif                          /* PORTMAP */
 574                         } else
 575                                 continue;
 576                         xdrmem_create(xdrs, inbuf, (u_int)inlen, XDR_DECODE);
 577                         if (xdr_replymsg(xdrs, &msg)) {
 578                                 if ((msg.rm_reply.rp_stat == MSG_ACCEPTED) &&
 579                                     (msg.acpted_rply.ar_stat == SUCCESS)) {
 580                                         struct netbuf taddr, *np;
 581                                         struct sockaddr_in *sin;
 582
 583 #ifdef PORTMAP
 584                                         if (pmap_flag && pmap_reply_flag) {
 585                                                 sin = (struct sockaddr_in *)
 586                                                     (void *)&fdlist[i].raddr;
 587                                                 sin->sin_port =
 588                                                     htons((u_short)port);
 589                                                 taddr.len = taddr.maxlen =
 590                                                     fdlist[i].raddr.ss_len;
 591                                                 taddr.buf = &fdlist[i].raddr;
 592                                                 done = (*eachresult)(resultsp,
 593                                                     &taddr, fdlist[i].nconf);
 594                                         } else {
 595 #endif                          /* PORTMAP */
 596 #ifdef RPC_DEBUG
 597                                                 fprintf(stderr, "uaddr %s\n",
 598                                                     uaddrp);
 599 #endif
 600                                                 np = uaddr2taddr(
 601                                                     fdlist[i].nconf, uaddrp);
 602                                                 done = (*eachresult)(resultsp,
 603                                                     np, fdlist[i].nconf);
 604                                                 free(np);
 605 #ifdef PORTMAP
 606                                         }
 607 #endif                          /* PORTMAP */
 608                                 }
 609                                 /* otherwise, we just ignore the errors ... */
 610                         }
 611                         /* else some kind of deserialization problem ... */
 612
 613                         xdrs->x_op = XDR_FREE;
 614                         msg.acpted_rply.ar_results.proc = (xdrproc_t) xdr_void;
 615                         xdr_replymsg(xdrs, &msg);
 616                         (*xresults)(xdrs, resultsp);
 617                         XDR_DESTROY(xdrs);
 618                         if (done) {
 619                                 stat = RPC_SUCCESS;
 620                                 goto done_broad;
 621                         } else {
 622                                 goto recv_again;
 623                         }
 624                 }               /* The recv for loop */
 625         }                       /* The giant for loop */
 626
 627 done_broad:
 628         if (inbuf)
 629                 free(inbuf);
 630         if (outbuf)
 631                 free(outbuf);
 632 #ifdef PORTMAP
 633         if (outbuf_pmap)
 634                 free(outbuf_pmap);
 635 #endif                          /* PORTMAP */
 636         for (i = 0; i < fdlistno; i++) {
 637                 _close(fdlist[i].fd);
 638                 __rpc_freebroadifs(&fdlist[i].nal);
 639         }
 640         AUTH_DESTROY(sys_auth);
 641         __rpc_endconf(handle);
 642
 643         return (stat);
 644 }
 645
 646
 647 enum clnt_stat
 648 rpc_broadcast(
 649     rpcprog_t           prog,           /* program number */
 650     rpcvers_t           vers,           /* version number */
 651     rpcproc_t           proc,           /* procedure number */
 652     xdrproc_t           xargs,          /* xdr routine for args */
 653     caddr_t             argsp,          /* pointer to args */
 654     xdrproc_t           xresults,       /* xdr routine for results */
 655     caddr_t             resultsp,       /* pointer to results */
 656     resultproc_t        eachresult,     /* call with each result obtained */
 657     const char          *nettype        /* transport type */
 658 )
 659 {
 660         enum clnt_stat  dummy;
 661
 662         dummy = rpc_broadcast_exp(prog, vers, proc, xargs, argsp,
 663                 xresults, resultsp, eachresult,
 664                 INITTIME, WAITTIME, nettype);
 665         return (dummy);
 666 }