lib/libc/rpc/clnt_bcast.c

   1 /*
   2  * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
   3  * unrestricted use provided that this legend is included on all tape
   4  * media and as a part of the software program in whole or part.  Users
   5  * may copy or modify Sun RPC without charge, but are not authorized
   6  * to license or distribute it to anyone else except as part of a product or
   7  * program developed by the user.
   8  *
   9  * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
  10  * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
  11  * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
  12  *
  13  * Sun RPC is provided with no support and without any obligation on the
  14  * part of Sun Microsystems, Inc. to assist in its use, correction,
  15  * modification or enhancement.
  16  *
  17  * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
  18  * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
  19  * OR ANY PART THEREOF.
  20  *
  21  * In no event will Sun Microsystems, Inc. be liable for any lost revenue
  22  * or profits or other special, indirect and consequential damages, even if
  23  * Sun has been advised of the possibility of such damages.
  24  *
  25  * Sun Microsystems, Inc.
  26  * 2550 Garcia Avenue
  27  * Mountain View, California  94043
  28  *
  29  * @(#)clnt_bcast.c     1.18    94/05/03 SMI; 1.15 89/04/21 Copyr 1988 Sun Micro
  30  * $NetBSD: clnt_bcast.c,v 1.3 2000/07/06 03:05:20 christos Exp $
  31  * $FreeBSD: src/lib/libc/rpc/clnt_bcast.c,v 1.9 2006/09/09 22:14:42 mbr Exp $
  32  */
  33 /*
  34  * Copyright (c) 1986-1991 by Sun Microsystems Inc.
  35  */
  36
  37 /*
  38  * clnt_bcast.c
  39  * Client interface to broadcast service.
  40  *
  41  * Copyright (C) 1988, Sun Microsystems, Inc.
  42  *
  43  * The following is kludged-up support for simple rpc broadcasts.
  44  * Someday a large, complicated system will replace these routines.
  45  */
  46
  47 #include "namespace.h"
  48 #include <sys/types.h>
  49 #include <sys/socket.h>
  50 #include <sys/queue.h>
  51 #include <net/if.h>
  52 #include <netinet/in.h>
  53 #include <ifaddrs.h>
  54 #include <sys/poll.h>
  55 #include <rpc/rpc.h>
  56 #ifdef PORTMAP
  57 #include <rpc/pmap_prot.h>
  58 #include <rpc/pmap_clnt.h>
  59 #include <rpc/pmap_rmt.h>
  60 #endif                          /* PORTMAP */
  61 #include <rpc/nettype.h>
  62 #include <arpa/inet.h>
  63 #ifdef RPC_DEBUG
  64 #include <stdio.h>
  65 #endif
  66 #include <errno.h>
  67 #include <stdlib.h>
  68 #include <unistd.h>
  69 #include <netdb.h>
  70 #include <err.h>
  71 #include <string.h>
  72 #include "un-namespace.h"
  73
  74 #include "rpc_com.h"
  75
  76 #define MAXBCAST 20     /* Max no of broadcasting transports */
  77 #define INITTIME 4000   /* Time to wait initially */
  78 #define WAITTIME 8000   /* Maximum time to wait */
  79
  80 /*
  81  * If nettype is NULL, it broadcasts on all the available
  82  * datagram_n transports. May potentially lead to broadacst storms
  83  * and hence should be used with caution, care and courage.
  84  *
  85  * The current parameter xdr packet size is limited by the max tsdu
  86  * size of the transport. If the max tsdu size of any transport is
  87  * smaller than the parameter xdr packet, then broadcast is not
  88  * sent on that transport.
  89  *
  90  * Also, the packet size should be less the packet size of
  91  * the data link layer (for ethernet it is 1400 bytes).  There is
  92  * no easy way to find out the max size of the data link layer and
  93  * we are assuming that the args would be smaller than that.
  94  *
  95  * The result size has to be smaller than the transport tsdu size.
  96  *
  97  * If PORTMAP has been defined, we send two packets for UDP, one for
  98  * rpcbind and one for portmap. For those machines which support
  99  * both rpcbind and portmap, it will cause them to reply twice, and
 100  * also here it will get two responses ... inefficient and clumsy.
 101  */
 102
 103 struct broadif {
 104         int index;
 105         struct sockaddr_storage broadaddr;
 106         TAILQ_ENTRY(broadif) link;
 107 };
 108
 109 typedef TAILQ_HEAD(, broadif) broadlist_t;
 110
 111 int     __rpc_broadenable(int, int, struct broadif *);
 112 void    __rpc_freebroadifs(broadlist_t *);
 113 int     __rpc_getbroadifs(int, int, int, broadlist_t *);
 114
 115 int __rpc_lowvers = 0;
 116
 117 int
 118 __rpc_getbroadifs(int af, int proto, int socktype, broadlist_t *list)
 119 {
 120         int count = 0;
 121         struct broadif *bip;
 122         struct ifaddrs *ifap, *ifp;
 123 #ifdef INET6
 124         struct sockaddr_in6 *sin6;
 125 #endif
 126         struct sockaddr_in *sin;
 127         struct addrinfo hints, *res;
 128
 129         if (getifaddrs(&ifp) < 0)
 130                 return 0;
 131
 132         memset(&hints, 0, sizeof hints);
 133
 134         hints.ai_family = af;
 135         hints.ai_protocol = proto;
 136         hints.ai_socktype = socktype;
 137
 138         if (getaddrinfo(NULL, "sunrpc", &hints, &res) != 0) {
 139                 freeifaddrs(ifp);
 140                 return 0;
 141         }
 142
 143         for (ifap = ifp; ifap != NULL; ifap = ifap->ifa_next) {
 144                 if (ifap->ifa_addr->sa_family != af ||
 145                     !(ifap->ifa_flags & IFF_UP))
 146                         continue;
 147                 bip = (struct broadif *)malloc(sizeof *bip);
 148                 if (bip == NULL)
 149                         break;
 150                 bip->index = if_nametoindex(ifap->ifa_name);
 151                 if (
 152 #ifdef INET6
 153                 af != AF_INET6 &&
 154 #endif
 155                 (ifap->ifa_flags & IFF_BROADCAST) &&
 156                  ifap->ifa_broadaddr) {
 157                         memcpy(&bip->broadaddr, ifap->ifa_broadaddr,
 158                             (size_t)ifap->ifa_broadaddr->sa_len);
 159                         sin = (struct sockaddr_in *)(void *)&bip->broadaddr;
 160                         sin->sin_port =
 161                             ((struct sockaddr_in *)
 162                             (void *)res->ai_addr)->sin_port;
 163                 } else
 164 #ifdef INET6
 165                 if (af == AF_INET6 && (ifap->ifa_flags & IFF_MULTICAST)) {
 166                         sin6 = (struct sockaddr_in6 *)(void *)&bip->broadaddr;
 167                         inet_pton(af, RPCB_MULTICAST_ADDR, &sin6->sin6_addr);
 168                         sin6->sin6_family = af;
 169                         sin6->sin6_len = sizeof *sin6;
 170                         sin6->sin6_port =
 171                             ((struct sockaddr_in6 *)
 172                             (void *)res->ai_addr)->sin6_port;
 173                         sin6->sin6_scope_id = bip->index;
 174                 } else
 175 #endif
 176                 {
 177                         free(bip);
 178                         continue;
 179                 }
 180                 TAILQ_INSERT_TAIL(list, bip, link);
 181                 count++;
 182         }
 183         freeifaddrs(ifp);
 184         freeaddrinfo(res);
 185
 186         return count;
 187 }
 188
 189 void
 190 __rpc_freebroadifs(broadlist_t *list)
 191 {
 192         struct broadif *bip, *next;
 193
 194         bip = TAILQ_FIRST(list);
 195
 196         while (bip != NULL) {
 197                 next = TAILQ_NEXT(bip, link);
 198                 free(bip);
 199                 bip = next;
 200         }
 201 }
 202
 203 int
 204 /*ARGSUSED*/
 205 __rpc_broadenable(int af, int s, struct broadif *bip)
 206 {
 207         int o = 1;
 208
 209 #if 0
 210         if (af == AF_INET6) {
 211                 fprintf(stderr, "set v6 multicast if to %d\n", bip->index);
 212                 if (_setsockopt(s, IPPROTO_IPV6, IPV6_MULTICAST_IF, &bip->index,
 213                     sizeof bip->index) < 0)
 214                         return -1;
 215         } else
 216 #endif
 217                 if (_setsockopt(s, SOL_SOCKET, SO_BROADCAST, &o, sizeof o) < 0)
 218                         return -1;
 219
 220         return 0;
 221 }
 222
 223
 224 enum clnt_stat
 225 rpc_broadcast_exp(prog, vers, proc, xargs, argsp, xresults, resultsp,
 226         eachresult, inittime, waittime, nettype)
 227         rpcprog_t       prog;           /* program number */
 228         rpcvers_t       vers;           /* version number */
 229         rpcproc_t       proc;           /* procedure number */
 230         xdrproc_t       xargs;          /* xdr routine for args */
 231         caddr_t         argsp;          /* pointer to args */
 232         xdrproc_t       xresults;       /* xdr routine for results */
 233         caddr_t         resultsp;       /* pointer to results */
 234         resultproc_t    eachresult;     /* call with each result obtained */
 235         int             inittime;       /* how long to wait initially */
 236         int             waittime;       /* maximum time to wait */
 237         const char              *nettype;       /* transport type */
 238 {
 239         enum clnt_stat  stat = RPC_SUCCESS; /* Return status */
 240         XDR             xdr_stream; /* XDR stream */
 241         XDR             *xdrs = &xdr_stream;
 242         struct rpc_msg  msg;    /* RPC message */
 243         struct timeval  t;
 244         char            *outbuf = NULL; /* Broadcast msg buffer */
 245         char            *inbuf = NULL; /* Reply buf */
 246         int             inlen;
 247         u_int           maxbufsize = 0;
 248         AUTH            *sys_auth = authunix_create_default();
 249         int             i;
 250         void            *handle;
 251         char            uaddress[1024]; /* A self imposed limit */
 252         char            *uaddrp = uaddress;
 253         int             pmap_reply_flag; /* reply recvd from PORTMAP */
 254         /* An array of all the suitable broadcast transports */
 255         struct {
 256                 int fd;         /* File descriptor */
 257                 int af;
 258                 int proto;
 259                 struct netconfig *nconf; /* Netconfig structure */
 260                 u_int asize;    /* Size of the addr buf */
 261                 u_int dsize;    /* Size of the data buf */
 262                 struct sockaddr_storage raddr; /* Remote address */
 263                 broadlist_t nal;
 264         } fdlist[MAXBCAST];
 265         struct pollfd pfd[MAXBCAST];
 266         size_t fdlistno = 0;
 267         struct r_rpcb_rmtcallargs barg; /* Remote arguments */
 268         struct r_rpcb_rmtcallres bres; /* Remote results */
 269         size_t outlen;
 270         struct netconfig *nconf;
 271         int msec;
 272         int pollretval;
 273         int fds_found;
 274
 275 #ifdef PORTMAP
 276         size_t outlen_pmap = 0;
 277         u_long port;            /* Remote port number */
 278         int pmap_flag = 0;      /* UDP exists ? */
 279         char *outbuf_pmap = NULL;
 280         struct rmtcallargs barg_pmap;   /* Remote arguments */
 281         struct rmtcallres bres_pmap; /* Remote results */
 282         u_int udpbufsz = 0;
 283 #endif                          /* PORTMAP */
 284
 285         if (sys_auth == NULL) {
 286                 return (RPC_SYSTEMERROR);
 287         }
 288         /*
 289          * initialization: create a fd, a broadcast address, and send the
 290          * request on the broadcast transport.
 291          * Listen on all of them and on replies, call the user supplied
 292          * function.
 293          */
 294
 295         if (nettype == NULL)
 296                 nettype = "datagram_n";
 297         if ((handle = __rpc_setconf(nettype)) == NULL) {
 298                 AUTH_DESTROY(sys_auth);
 299                 return (RPC_UNKNOWNPROTO);
 300         }
 301         while ((nconf = __rpc_getconf(handle)) != NULL) {
 302                 int fd;
 303                 struct __rpc_sockinfo si;
 304
 305                 if (nconf->nc_semantics != NC_TPI_CLTS)
 306                         continue;
 307                 if (fdlistno >= MAXBCAST)
 308                         break;  /* No more slots available */
 309                 if (!__rpc_nconf2sockinfo(nconf, &si))
 310                         continue;
 311
 312                 TAILQ_INIT(&fdlist[fdlistno].nal);
 313                 if (__rpc_getbroadifs(si.si_af, si.si_proto, si.si_socktype,
 314                     &fdlist[fdlistno].nal) == 0)
 315                         continue;
 316
 317                 fd = _socket(si.si_af, si.si_socktype, si.si_proto);
 318                 if (fd < 0) {
 319                         stat = RPC_CANTSEND;
 320                         continue;
 321                 }
 322                 fdlist[fdlistno].af = si.si_af;
 323                 fdlist[fdlistno].proto = si.si_proto;
 324                 fdlist[fdlistno].fd = fd;
 325                 fdlist[fdlistno].nconf = nconf;
 326                 fdlist[fdlistno].asize = __rpc_get_a_size(si.si_af);
 327                 pfd[fdlistno].events = POLLIN | POLLPRI |
 328                         POLLRDNORM | POLLRDBAND;
 329                 pfd[fdlistno].fd = fdlist[fdlistno].fd = fd;
 330                 fdlist[fdlistno].dsize = __rpc_get_t_size(si.si_af, si.si_proto,
 331                                                           0);
 332
 333                 if (maxbufsize <= fdlist[fdlistno].dsize)
 334                         maxbufsize = fdlist[fdlistno].dsize;
 335
 336 #ifdef PORTMAP
 337                 if (si.si_af == AF_INET && si.si_proto == IPPROTO_UDP) {
 338                         udpbufsz = fdlist[fdlistno].dsize;
 339                         if ((outbuf_pmap = malloc(udpbufsz)) == NULL) {
 340                                 _close(fd);
 341                                 stat = RPC_SYSTEMERROR;
 342                                 goto done_broad;
 343                         }
 344                         pmap_flag = 1;
 345                 }
 346 #endif                          /* PORTMAP */
 347                 fdlistno++;
 348         }
 349
 350         if (fdlistno == 0) {
 351                 if (stat == RPC_SUCCESS)
 352                         stat = RPC_UNKNOWNPROTO;
 353                 goto done_broad;
 354         }
 355         if (maxbufsize == 0) {
 356                 if (stat == RPC_SUCCESS)
 357                         stat = RPC_CANTSEND;
 358                 goto done_broad;
 359         }
 360         inbuf = malloc(maxbufsize);
 361         outbuf = malloc(maxbufsize);
 362         if ((inbuf == NULL) || (outbuf == NULL)) {
 363                 stat = RPC_SYSTEMERROR;
 364                 goto done_broad;
 365         }
 366
 367         /* Serialize all the arguments which have to be sent */
 368         gettimeofday(&t, NULL);
 369         msg.rm_xid = __RPC_GETXID(&t);
 370         msg.rm_direction = CALL;
 371         msg.rm_call.cb_rpcvers = RPC_MSG_VERSION;
 372         msg.rm_call.cb_prog = RPCBPROG;
 373         msg.rm_call.cb_vers = RPCBVERS;
 374         msg.rm_call.cb_proc = RPCBPROC_CALLIT;
 375         barg.prog = prog;
 376         barg.vers = vers;
 377         barg.proc = proc;
 378         barg.args.args_val = argsp;
 379         barg.xdr_args = xargs;
 380         bres.addr = uaddrp;
 381         bres.results.results_val = resultsp;
 382         bres.xdr_res = xresults;
 383         msg.rm_call.cb_cred = sys_auth->ah_cred;
 384         msg.rm_call.cb_verf = sys_auth->ah_verf;
 385         xdrmem_create(xdrs, outbuf, maxbufsize, XDR_ENCODE);
 386         if ((!xdr_callmsg(xdrs, &msg)) ||
 387             (!xdr_rpcb_rmtcallargs(xdrs,
 388             (struct rpcb_rmtcallargs *)(void *)&barg))) {
 389                 stat = RPC_CANTENCODEARGS;
 390                 goto done_broad;
 391         }
 392         outlen = xdr_getpos(xdrs);
 393         xdr_destroy(xdrs);
 394
 395 #ifdef PORTMAP
 396         /* Prepare the packet for version 2 PORTMAP */
 397         if (pmap_flag) {
 398                 msg.rm_xid++;   /* One way to distinguish */
 399                 msg.rm_call.cb_prog = PMAPPROG;
 400                 msg.rm_call.cb_vers = PMAPVERS;
 401                 msg.rm_call.cb_proc = PMAPPROC_CALLIT;
 402                 barg_pmap.prog = prog;
 403                 barg_pmap.vers = vers;
 404                 barg_pmap.proc = proc;
 405                 barg_pmap.args_ptr = argsp;
 406                 barg_pmap.xdr_args = xargs;
 407                 bres_pmap.port_ptr = &port;
 408                 bres_pmap.xdr_results = xresults;
 409                 bres_pmap.results_ptr = resultsp;
 410                 xdrmem_create(xdrs, outbuf_pmap, udpbufsz, XDR_ENCODE);
 411                 if ((! xdr_callmsg(xdrs, &msg)) ||
 412                     (! xdr_rmtcall_args(xdrs, &barg_pmap))) {
 413                         stat = RPC_CANTENCODEARGS;
 414                         goto done_broad;
 415                 }
 416                 outlen_pmap = xdr_getpos(xdrs);
 417                 xdr_destroy(xdrs);
 418         }
 419 #endif                          /* PORTMAP */
 420
 421         /*
 422          * Basic loop: broadcast the packets to transports which
 423          * support data packets of size such that one can encode
 424          * all the arguments.
 425          * Wait a while for response(s).
 426          * The response timeout grows larger per iteration.
 427          */
 428         for (msec = inittime; msec <= waittime; msec += msec) {
 429                 struct broadif *bip;
 430
 431                 /* Broadcast all the packets now */
 432                 for (i = 0; i < fdlistno; i++) {
 433                         if (fdlist[i].dsize < outlen) {
 434                                 stat = RPC_CANTSEND;
 435                                 continue;
 436                         }
 437                         for (bip = TAILQ_FIRST(&fdlist[i].nal); bip != NULL;
 438                              bip = TAILQ_NEXT(bip, link)) {
 439                                 void *addr;
 440
 441                                 addr = &bip->broadaddr;
 442
 443                                 __rpc_broadenable(fdlist[i].af, fdlist[i].fd,
 444                                     bip);
 445
 446                                 /*
 447                                  * Only use version 3 if lowvers is not set
 448                                  */
 449
 450                                 if (!__rpc_lowvers)
 451                                         if (_sendto(fdlist[i].fd, outbuf,
 452                                             outlen, 0, (struct sockaddr*)addr,
 453                                             (size_t)fdlist[i].asize) !=
 454                                             outlen) {
 455 #ifdef RPC_DEBUG
 456                                                 perror("sendto");
 457 #endif
 458                                                 warnx("clnt_bcast: cannot send"
 459                                                       "broadcast packet");
 460                                                 stat = RPC_CANTSEND;
 461                                                 continue;
 462                                         };
 463 #ifdef RPC_DEBUG
 464                                 if (!__rpc_lowvers)
 465                                         fprintf(stderr, "Broadcast packet sent "
 466                                                 "for %s\n",
 467                                                  fdlist[i].nconf->nc_netid);
 468 #endif
 469 #ifdef PORTMAP
 470                                 /*
 471                                  * Send the version 2 packet also
 472                                  * for UDP/IP
 473                                  */
 474                                 if (pmap_flag &&
 475                                     fdlist[i].proto == IPPROTO_UDP) {
 476                                         if (_sendto(fdlist[i].fd, outbuf_pmap,
 477                                             outlen_pmap, 0, addr,
 478                                             (size_t)fdlist[i].asize) !=
 479                                                 outlen_pmap) {
 480                                                 warnx("clnt_bcast: "
 481                                                     "Cannot send broadcast packet");
 482                                                 stat = RPC_CANTSEND;
 483                                                 continue;
 484                                         }
 485                                 }
 486 #ifdef RPC_DEBUG
 487                                 fprintf(stderr, "PMAP Broadcast packet "
 488                                         "sent for %s\n",
 489                                         fdlist[i].nconf->nc_netid);
 490 #endif
 491 #endif                          /* PORTMAP */
 492                         }
 493                         /* End for sending all packets on this transport */
 494                 }       /* End for sending on all transports */
 495
 496                 if (eachresult == NULL) {
 497                         stat = RPC_SUCCESS;
 498                         goto done_broad;
 499                 }
 500
 501                 /*
 502                  * Get all the replies from these broadcast requests
 503                  */
 504         recv_again:
 505
 506                 switch (pollretval = _poll(pfd, fdlistno, msec)) {
 507                 case 0:         /* timed out */
 508                         stat = RPC_TIMEDOUT;
 509                         continue;
 510                 case -1:        /* some kind of error - we ignore it */
 511                         goto recv_again;
 512                 }               /* end of poll results switch */
 513
 514                 for (i = fds_found = 0;
 515                      i < fdlistno && fds_found < pollretval; i++) {
 516                         bool_t done = FALSE;
 517
 518                         if (pfd[i].revents == 0)
 519                                 continue;
 520                         else if (pfd[i].revents & POLLNVAL) {
 521                                 /*
 522                                  * Something bad has happened to this descri-
 523                                  * ptor. We can cause _poll() to ignore
 524                                  * it simply by using a negative fd.  We do that
 525                                  * rather than compacting the pfd[] and fdlist[]
 526                                  * arrays.
 527                                  */
 528                                 pfd[i].fd = -1;
 529                                 fds_found++;
 530                                 continue;
 531                         } else
 532                                 fds_found++;
 533 #ifdef RPC_DEBUG
 534                         fprintf(stderr, "response for %s\n",
 535                                 fdlist[i].nconf->nc_netid);
 536 #endif
 537                 try_again:
 538                         inlen = _recvfrom(fdlist[i].fd, inbuf, fdlist[i].dsize,
 539                             0, (struct sockaddr *)(void *)&fdlist[i].raddr,
 540                             &fdlist[i].asize);
 541                         if (inlen < 0) {
 542                                 if (errno == EINTR)
 543                                         goto try_again;
 544                                 warnx("clnt_bcast: Cannot receive reply to "
 545                                         "broadcast");
 546                                 stat = RPC_CANTRECV;
 547                                 continue;
 548                         }
 549                         if (inlen < sizeof (u_int32_t))
 550                                 continue; /* Drop that and go ahead */
 551                         /*
 552                          * see if reply transaction id matches sent id.
 553                          * If so, decode the results. If return id is xid + 1
 554                          * it was a PORTMAP reply
 555                          */
 556                         if (*((u_int32_t *)(void *)(inbuf)) ==
 557                             *((u_int32_t *)(void *)(outbuf))) {
 558                                 pmap_reply_flag = 0;
 559                                 msg.acpted_rply.ar_verf = _null_auth;
 560                                 msg.acpted_rply.ar_results.where =
 561                                         (caddr_t)(void *)&bres;
 562                                 msg.acpted_rply.ar_results.proc =
 563                                         (xdrproc_t)xdr_rpcb_rmtcallres;
 564 #ifdef PORTMAP
 565                         } else if (pmap_flag &&
 566                                 *((u_int32_t *)(void *)(inbuf)) ==
 567                                 *((u_int32_t *)(void *)(outbuf_pmap))) {
 568                                 pmap_reply_flag = 1;
 569                                 msg.acpted_rply.ar_verf = _null_auth;
 570                                 msg.acpted_rply.ar_results.where =
 571                                         (caddr_t)(void *)&bres_pmap;
 572                                 msg.acpted_rply.ar_results.proc =
 573                                         (xdrproc_t)xdr_rmtcallres;
 574 #endif                          /* PORTMAP */
 575                         } else
 576                                 continue;
 577                         xdrmem_create(xdrs, inbuf, (u_int)inlen, XDR_DECODE);
 578                         if (xdr_replymsg(xdrs, &msg)) {
 579                                 if ((msg.rm_reply.rp_stat == MSG_ACCEPTED) &&
 580                                     (msg.acpted_rply.ar_stat == SUCCESS)) {
 581                                         struct netbuf taddr, *np;
 582                                         struct sockaddr_in *sin;
 583
 584 #ifdef PORTMAP
 585                                         if (pmap_flag && pmap_reply_flag) {
 586                                                 sin = (struct sockaddr_in *)
 587                                                     (void *)&fdlist[i].raddr;
 588                                                 sin->sin_port =
 589                                                     htons((u_short)port);
 590                                                 taddr.len = taddr.maxlen =
 591                                                     fdlist[i].raddr.ss_len;
 592                                                 taddr.buf = &fdlist[i].raddr;
 593                                                 done = (*eachresult)(resultsp,
 594                                                     &taddr, fdlist[i].nconf);
 595                                         } else {
 596 #endif                          /* PORTMAP */
 597 #ifdef RPC_DEBUG
 598                                                 fprintf(stderr, "uaddr %s\n",
 599                                                     uaddrp);
 600 #endif
 601                                                 np = uaddr2taddr(
 602                                                     fdlist[i].nconf, uaddrp);
 603                                                 done = (*eachresult)(resultsp,
 604                                                     np, fdlist[i].nconf);
 605                                                 free(np);
 606 #ifdef PORTMAP
 607                                         }
 608 #endif                          /* PORTMAP */
 609                                 }
 610                                 /* otherwise, we just ignore the errors ... */
 611                         }
 612                         /* else some kind of deserialization problem ... */
 613
 614                         xdrs->x_op = XDR_FREE;
 615                         msg.acpted_rply.ar_results.proc = (xdrproc_t) xdr_void;
 616                         xdr_replymsg(xdrs, &msg);
 617                         (*xresults)(xdrs, resultsp);
 618                         XDR_DESTROY(xdrs);
 619                         if (done) {
 620                                 stat = RPC_SUCCESS;
 621                                 goto done_broad;
 622                         } else {
 623                                 goto recv_again;
 624                         }
 625                 }               /* The recv for loop */
 626         }                       /* The giant for loop */
 627
 628 done_broad:
 629         if (inbuf)
 630                 free(inbuf);
 631         if (outbuf)
 632                 free(outbuf);
 633 #ifdef PORTMAP
 634         if (outbuf_pmap)
 635                 free(outbuf_pmap);
 636 #endif                          /* PORTMAP */
 637         for (i = 0; i < fdlistno; i++) {
 638                 _close(fdlist[i].fd);
 639                 __rpc_freebroadifs(&fdlist[i].nal);
 640         }
 641         AUTH_DESTROY(sys_auth);
 642         __rpc_endconf(handle);
 643
 644         return (stat);
 645 }
 646
 647
 648 enum clnt_stat
 649 rpc_broadcast(prog, vers, proc, xargs, argsp, xresults, resultsp,
 650                         eachresult, nettype)
 651         rpcprog_t       prog;           /* program number */
 652         rpcvers_t       vers;           /* version number */
 653         rpcproc_t       proc;           /* procedure number */
 654         xdrproc_t       xargs;          /* xdr routine for args */
 655         caddr_t         argsp;          /* pointer to args */
 656         xdrproc_t       xresults;       /* xdr routine for results */
 657         caddr_t         resultsp;       /* pointer to results */
 658         resultproc_t    eachresult;     /* call with each result obtained */
 659         const char              *nettype;       /* transport type */
 660 {
 661         enum clnt_stat  dummy;
 662
 663         dummy = rpc_broadcast_exp(prog, vers, proc, xargs, argsp,
 664                 xresults, resultsp, eachresult,
 665                 INITTIME, WAITTIME, nettype);
 666         return (dummy);
 667 }