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