nis/nis_table.c

   1 /* Copyright (c) 1997-1999,2003,2004,2005,2006 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Thorsten Kukuk <kukuk@suse.de>, 1997.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <string.h>
  21 #include <rpcsvc/nis.h>
  22
  23 #include "nis_xdr.h"
  24 #include "nis_intern.h"
  25
  26
  27 static struct ib_request *
  28 __create_ib_request (const_nis_name name, unsigned int flags)
  29 {
  30   struct ib_request *ibreq = calloc (1, sizeof (struct ib_request));
  31   nis_attr *search_val = NULL;
  32   size_t search_len = 0;
  33   size_t size = 0;
  34
  35   if (ibreq == NULL)
  36     return NULL;
  37
  38   ibreq->ibr_flags = flags;
  39
  40   char *cptr = strdupa (name);
  41
  42   /* Not of "[key=value,key=value,...],foo.." format? */
  43   if (cptr[0] != '[')
  44     {
  45       ibreq->ibr_name = strdup (cptr);
  46       if (ibreq->ibr_name == NULL)
  47         {
  48           free (ibreq);
  49           return NULL;
  50         }
  51       return ibreq;
  52     }
  53
  54   /* "[key=value,...],foo" format */
  55   ibreq->ibr_name = strchr (cptr, ']');
  56   if (ibreq->ibr_name == NULL || ibreq->ibr_name[1] != ',')
  57     {
  58       /* The object has not really been built yet so we use free.  */
  59       free (ibreq);
  60       return NULL;
  61     }
  62
  63   /* Check if we have an entry of "[key=value,],bar".  If, remove the "," */
  64   if (ibreq->ibr_name[-1] == ',')
  65     ibreq->ibr_name[-1] = '\0';
  66   else
  67     ibreq->ibr_name[0] = '\0';
  68   ibreq->ibr_name += 2;
  69   ibreq->ibr_name = strdup (ibreq->ibr_name);
  70   if (ibreq->ibr_name == NULL)
  71     {
  72     free_null:
  73       while (search_len-- > 0)
  74         {
  75           free (search_val[search_len].zattr_ndx);
  76           free (search_val[search_len].zattr_val.zattr_val_val);
  77         }
  78       free (search_val);
  79       nis_free_request (ibreq);
  80       return NULL;
  81     }
  82
  83   ++cptr; /* Remove "[" */
  84
  85   while (cptr != NULL && cptr[0] != '\0')
  86     {
  87       char *key = cptr;
  88       char *val = strchr (cptr, '=');
  89
  90       cptr = strchr (key, ',');
  91       if (cptr != NULL)
  92         *cptr++ = '\0';
  93
  94       if (!val)
  95         {
  96           nis_free_request (ibreq);
  97           return NULL;
  98         }
  99       *val++ = '\0';
 100       if ((search_len + 1) >= size)
 101         {
 102           size += 1;
 103           nis_attr *newp = realloc (search_val, size * sizeof (nis_attr));
 104           if (newp == NULL)
 105             goto free_null;
 106           search_val = newp;
 107         }
 108       search_val[search_len].zattr_ndx = strdup (key);
 109       if ((search_val[search_len].zattr_ndx) == NULL)
 110         goto free_null;
 111
 112       search_val[search_len].zattr_val.zattr_val_len = strlen (val) + 1;
 113       search_val[search_len].zattr_val.zattr_val_val = strdup (val);
 114       if (search_val[search_len].zattr_val.zattr_val_val == NULL)
 115         {
 116           free (search_val[search_len].zattr_ndx);
 117           goto free_null;
 118         }
 119
 120       ++search_len;
 121     }
 122
 123   ibreq->ibr_srch.ibr_srch_val = search_val;
 124   ibreq->ibr_srch.ibr_srch_len = search_len;
 125
 126   return ibreq;
 127 }
 128
 129 static const struct timeval RPCTIMEOUT = {10, 0};
 130
 131 static char *
 132 get_tablepath (char *name, dir_binding *bptr)
 133 {
 134   enum clnt_stat result;
 135   nis_result res;
 136   struct ns_request req;
 137
 138   memset (&res, '\0', sizeof (res));
 139
 140   req.ns_name = name;
 141   req.ns_object.ns_object_len = 0;
 142   req.ns_object.ns_object_val = NULL;
 143
 144   result = clnt_call (bptr->clnt, NIS_LOOKUP, (xdrproc_t) _xdr_ns_request,
 145                       (caddr_t) &req, (xdrproc_t) _xdr_nis_result,
 146                       (caddr_t) &res, RPCTIMEOUT);
 147
 148   const char *cptr;
 149   if (result == RPC_SUCCESS && NIS_RES_STATUS (&res) == NIS_SUCCESS
 150       && __type_of (NIS_RES_OBJECT (&res)) == NIS_TABLE_OBJ)
 151     cptr = NIS_RES_OBJECT (&res)->TA_data.ta_path;
 152   else
 153     cptr = "";
 154
 155   char *str = strdup (cptr);
 156
 157   if (result == RPC_SUCCESS)
 158     xdr_free ((xdrproc_t) _xdr_nis_result, (char *) &res);
 159
 160   return str;
 161 }
 162
 163 nis_result *
 164 nis_list (const_nis_name name, unsigned int flags,
 165           int (*callback) (const_nis_name name,
 166                            const nis_object *object,
 167                            const void *userdata),
 168           const void *userdata)
 169 {
 170   nis_result *res = malloc (sizeof (nis_result));
 171   ib_request *ibreq;
 172   int status;
 173   enum clnt_stat clnt_status;
 174   int count_links = 0;          /* We will only follow NIS_MAXLINKS links! */
 175   int done = 0;
 176   nis_name *names;
 177   nis_name namebuf[2] = {NULL, NULL};
 178   int name_nr = 0;
 179   nis_cb *cb = NULL;
 180   char *tableptr;
 181   char *tablepath = NULL;
 182   int first_try = 0; /* Do we try the old binding at first ? */
 183   int errcode;
 184
 185   if (res == NULL)
 186     return NULL;
 187
 188   if (name == NULL)
 189     {
 190       errcode = NIS_BADNAME;
 191     err_out:
 192       memset (res, '\0', sizeof (nis_result));
 193       NIS_RES_STATUS (res) = NIS_BADNAME;
 194       return res;
 195     }
 196
 197   if ((ibreq = __create_ib_request (name, flags)) == NULL)
 198     {
 199       errcode = NIS_BADNAME;
 200       goto err_out;
 201     }
 202
 203   if ((flags & EXPAND_NAME)
 204       && ibreq->ibr_name[strlen (ibreq->ibr_name) - 1] != '.')
 205     {
 206       names = nis_getnames (ibreq->ibr_name);
 207       free (ibreq->ibr_name);
 208       ibreq->ibr_name = NULL;
 209       if (names == NULL)
 210         {
 211           nis_free_request (ibreq);
 212           errcode = NIS_BADNAME;
 213           goto err_out;
 214         }
 215       ibreq->ibr_name = strdup (names[name_nr]);
 216       if (ibreq->ibr_name == NULL)
 217         {
 218           nis_freenames (names);
 219           nis_free_request (ibreq);
 220           errcode = NIS_NOMEMORY;
 221           goto err_out;
 222         }
 223     }
 224   else
 225     {
 226       names = namebuf;
 227       names[name_nr] = ibreq->ibr_name;
 228     }
 229
 230   cb = NULL;
 231
 232   while (!done)
 233     {
 234       dir_binding bptr;
 235       directory_obj *dir = NULL;
 236
 237       memset (res, '\0', sizeof (nis_result));
 238
 239       status = __nisfind_server (ibreq->ibr_name, &dir);
 240       if (status != NIS_SUCCESS)
 241         {
 242           NIS_RES_STATUS (res) = status;
 243           goto fail3;
 244         }
 245
 246       status = __nisbind_create (&bptr, dir->do_servers.do_servers_val,
 247                                  dir->do_servers.do_servers_len, flags);
 248       if (status != NIS_SUCCESS)
 249         {
 250           NIS_RES_STATUS (res) = status;
 251           goto fail2;
 252         }
 253
 254       while (__nisbind_connect (&bptr) != NIS_SUCCESS)
 255         if (__nisbind_next (&bptr) != NIS_SUCCESS)
 256           {
 257             NIS_RES_STATUS (res) = NIS_NAMEUNREACHABLE;
 258             goto fail;
 259           }
 260
 261       if (callback != NULL)
 262         {
 263           cb = __nis_create_callback (callback, userdata, flags);
 264           ibreq->ibr_cbhost.ibr_cbhost_len = 1;
 265           ibreq->ibr_cbhost.ibr_cbhost_val = cb->serv;
 266         }
 267
 268     again:
 269       clnt_status = clnt_call (bptr.clnt, NIS_IBLIST,
 270                                (xdrproc_t) _xdr_ib_request, (caddr_t) ibreq,
 271                                (xdrproc_t) _xdr_nis_result,
 272                                (caddr_t) res, RPCTIMEOUT);
 273
 274       if (clnt_status != RPC_SUCCESS)
 275         NIS_RES_STATUS (res) = NIS_RPCERROR;
 276       else
 277         switch (NIS_RES_STATUS (res))
 278           { /* start switch */
 279           case NIS_PARTIAL:
 280           case NIS_SUCCESS:
 281           case NIS_S_SUCCESS:
 282             if (__type_of (NIS_RES_OBJECT (res)) == NIS_LINK_OBJ
 283                 && (flags & FOLLOW_LINKS))      /* We are following links.  */
 284               {
 285                 free (ibreq->ibr_name);
 286                 ibreq->ibr_name = NULL;
 287                 /* If we hit the link limit, bail.  */
 288                 if (count_links > NIS_MAXLINKS)
 289                   {
 290                     NIS_RES_STATUS (res) = NIS_LINKNAMEERROR;
 291                     ++done;
 292                     break;
 293                   }
 294                 ++count_links;
 295                 ibreq->ibr_name =
 296                   strdup (NIS_RES_OBJECT (res)->LI_data.li_name);
 297                 if (ibreq->ibr_name == NULL)
 298                   {
 299                     NIS_RES_STATUS (res) = NIS_NOMEMORY;
 300                   fail:
 301                     __nisbind_destroy (&bptr);
 302                   fail2:
 303                     nis_free_directory (dir);
 304                   fail3:
 305                     free (tablepath);
 306                     if (cb)
 307                       {
 308                         __nis_destroy_callback (cb);
 309                         ibreq->ibr_cbhost.ibr_cbhost_len = 0;
 310                         ibreq->ibr_cbhost.ibr_cbhost_val = NULL;
 311                       }
 312                     if (names != namebuf)
 313                       nis_freenames (names);
 314                     nis_free_request (ibreq);
 315                     return res;
 316                   }
 317                 if (NIS_RES_OBJECT (res)->LI_data.li_attrs.li_attrs_len)
 318                   if (ibreq->ibr_srch.ibr_srch_len == 0)
 319                     {
 320                       ibreq->ibr_srch.ibr_srch_len =
 321                         NIS_RES_OBJECT (res)->LI_data.li_attrs.li_attrs_len;
 322                       ibreq->ibr_srch.ibr_srch_val =
 323                         NIS_RES_OBJECT (res)->LI_data.li_attrs.li_attrs_val;
 324                     }
 325                 /* The following is a non-obvious optimization.  A
 326                    nis_freeresult call would call xdr_free as the
 327                    following code.  But it also would unnecessarily
 328                    free the result structure.  We avoid this here
 329                    along with the necessary tests.  */
 330 #if 1
 331                 xdr_free ((xdrproc_t) _xdr_nis_result, (char *)res);
 332                 memset (res, '\0', sizeof (*res));
 333 #else
 334                 nis_freeresult (res);
 335                 res = calloc (1, sizeof (nis_result));
 336                 if (res == NULL)
 337                   goto fail;
 338 #endif
 339                 first_try = 1; /* Try at first the old binding */
 340                 goto again;
 341               }
 342             else if ((flags & FOLLOW_PATH)
 343                      && NIS_RES_STATUS (res) == NIS_PARTIAL)
 344               {
 345                 if (tablepath == NULL)
 346                   {
 347                     tablepath = get_tablepath (ibreq->ibr_name, &bptr);
 348                     tableptr = tablepath;
 349                   }
 350                 if (tableptr == NULL)
 351                   {
 352                     ++done;
 353                     break;
 354                   }
 355                 free (ibreq->ibr_name);
 356                 ibreq->ibr_name = strsep (&tableptr, ":");
 357                 if (ibreq->ibr_name == NULL || ibreq->ibr_name[0] == '\0')
 358                   {
 359                     ibreq->ibr_name = strdup ("");
 360                     if (ibreq->ibr_name == NULL)
 361                       {
 362                         NIS_RES_STATUS (res) = NIS_NOMEMORY;
 363                         goto fail;
 364                       }
 365                     ++done;
 366                   }
 367                 else
 368                   {
 369                     ibreq->ibr_name = strdup (ibreq->ibr_name);
 370                     /* The following is a non-obvious optimization.  A
 371                        nis_freeresult call would call xdr_free as the
 372                        following code.  But it also would unnecessarily
 373                        free the result structure.  We avoid this here
 374                        along with the necessary tests.  */
 375 #if 1
 376                     xdr_free ((xdrproc_t) _xdr_nis_result, (char *)res);
 377                     memset (res, '\0', sizeof (*res));
 378                     if (ibreq->ibr_name == NULL)
 379                       {
 380                         NIS_RES_STATUS (res) = NIS_NOMEMORY;
 381                         goto fail;
 382                       }
 383 #else
 384                     nis_freeresult (res);
 385                     res = calloc (1, sizeof (nis_result));
 386                     if (res == NULL || ibreq->ibr_name == NULL)
 387                       {
 388                         free (res);
 389                         res = NULL;
 390                         goto fail;
 391                       }
 392 #endif
 393                     first_try = 1;
 394                     goto again;
 395                   }
 396               }
 397             else
 398               ++done;
 399             break;
 400           case NIS_CBRESULTS:
 401             if (cb != NULL)
 402               {
 403                 __nis_do_callback (&bptr, &res->cookie, cb);
 404                 NIS_RES_STATUS (res) = cb->result;
 405
 406                 if (!(flags & ALL_RESULTS))
 407                   ++done;
 408                 else
 409                   {
 410                     if (tablepath == NULL)
 411                       {
 412                         tablepath = get_tablepath (ibreq->ibr_name, &bptr);
 413                         tableptr = tablepath;
 414                       }
 415                     if (tableptr == NULL)
 416                       {
 417                         ++done;
 418                         break;
 419                       }
 420                     free (ibreq->ibr_name);
 421                     ibreq->ibr_name = strsep (&tableptr, ":");
 422                     if (ibreq->ibr_name == NULL || ibreq->ibr_name[0] == '\0')
 423                       {
 424                         ibreq->ibr_name = strdup ("");
 425                         ++done;
 426                       }
 427                     else
 428                       ibreq->ibr_name = strdup (ibreq->ibr_name);
 429                     if (ibreq->ibr_name == NULL)
 430                       {
 431                         NIS_RES_STATUS (res) = NIS_NOMEMORY;
 432                         goto fail;
 433                       }
 434                   }
 435               }
 436             break;
 437           case NIS_SYSTEMERROR:
 438           case NIS_NOSUCHNAME:
 439           case NIS_NOT_ME:
 440             /* If we had first tried the old binding, do nothing, but
 441                get a new binding */
 442             if (!first_try)
 443               {
 444                 if (__nisbind_next (&bptr) != NIS_SUCCESS)
 445                   {
 446                     ++done;
 447                     break; /* No more servers to search */
 448                   }
 449                 while (__nisbind_connect (&bptr) != NIS_SUCCESS)
 450                   {
 451                     if (__nisbind_next (&bptr) != NIS_SUCCESS)
 452                       {
 453                         ++done;
 454                         break; /* No more servers to search */
 455                       }
 456                   }
 457                 goto again;
 458               }
 459             break;
 460           default:
 461             if (!first_try)
 462               {
 463                 /* Try the next domainname if we don't follow a link.  */
 464                 free (ibreq->ibr_name);
 465                 ibreq->ibr_name = NULL;
 466                 if (count_links)
 467                   {
 468                     NIS_RES_STATUS (res) = NIS_LINKNAMEERROR;
 469                     ++done;
 470                     break;
 471                   }
 472                 ++name_nr;
 473                 if (names[name_nr] == NULL)
 474                   {
 475                     ++done;
 476                     break;
 477                   }
 478                 ibreq->ibr_name = strdup (names[name_nr]);
 479                 if (ibreq->ibr_name == NULL)
 480                   {
 481                     NIS_RES_STATUS (res) = NIS_NOMEMORY;
 482                     goto fail;
 483                   }
 484                 first_try = 1; /* Try old binding at first */
 485                 goto again;
 486               }
 487             break;
 488           }
 489       first_try = 0;
 490
 491       if (cb)
 492         {
 493           __nis_destroy_callback (cb);
 494           ibreq->ibr_cbhost.ibr_cbhost_len = 0;
 495           ibreq->ibr_cbhost.ibr_cbhost_val = NULL;
 496           cb = NULL;
 497         }
 498
 499       __nisbind_destroy (&bptr);
 500       nis_free_directory (dir);
 501     }
 502
 503   free (tablepath);
 504
 505   if (names != namebuf)
 506     nis_freenames (names);
 507
 508   nis_free_request (ibreq);
 509
 510   return res;
 511 }
 512 libnsl_hidden_def (nis_list)
 513
 514 nis_result *
 515 nis_add_entry (const_nis_name name, const nis_object *obj2, unsigned int flags)
 516 {
 517   nis_result *res = calloc (1, sizeof (nis_result));
 518   if (res == NULL)
 519     return NULL;
 520
 521   if (name == NULL)
 522     {
 523       NIS_RES_STATUS (res) = NIS_BADNAME;
 524       return res;
 525     }
 526
 527   size_t namelen = strlen (name);
 528   char buf1[namelen + 20];
 529   char buf4[namelen + 20];
 530
 531   ib_request *ibreq = __create_ib_request (name, flags);
 532   if (ibreq == NULL)
 533     {
 534       NIS_RES_STATUS (res) = NIS_BADNAME;
 535       return res;
 536     }
 537
 538   nis_object obj;
 539   memcpy (&obj, obj2, sizeof (nis_object));
 540
 541   if (obj.zo_name == NULL || strlen (obj.zo_name) == 0)
 542     obj.zo_name = nis_leaf_of_r (name, buf1, sizeof (buf1));
 543
 544   if (obj.zo_owner == NULL || strlen (obj.zo_owner) == 0)
 545     obj.zo_owner = nis_local_principal ();
 546
 547   if (obj.zo_group == NULL || strlen (obj.zo_group) == 0)
 548     obj.zo_group = nis_local_group ();
 549
 550   obj.zo_domain = nis_domain_of_r (name, buf4, sizeof (buf4));
 551
 552   ibreq->ibr_obj.ibr_obj_val = nis_clone_object (&obj, NULL);
 553   if (ibreq->ibr_obj.ibr_obj_val == NULL)
 554     {
 555       nis_free_request (ibreq);
 556       NIS_RES_STATUS (res) = NIS_NOMEMORY;
 557       return res;
 558     }
 559   ibreq->ibr_obj.ibr_obj_len = 1;
 560
 561   nis_error status = __do_niscall (ibreq->ibr_name, NIS_IBADD,
 562                                    (xdrproc_t) _xdr_ib_request,
 563                                    (caddr_t) ibreq,
 564                                    (xdrproc_t) _xdr_nis_result,
 565                                    (caddr_t) res, 0, NULL);
 566   if (status  != NIS_SUCCESS)
 567     NIS_RES_STATUS (res) = status;
 568
 569   nis_free_request (ibreq);
 570
 571   return res;
 572 }
 573
 574 nis_result *
 575 nis_modify_entry (const_nis_name name, const nis_object *obj2,
 576                   unsigned int flags)
 577 {
 578   nis_object obj;
 579   nis_result *res;
 580   nis_error status;
 581   ib_request *ibreq;
 582   size_t namelen = strlen (name);
 583   char buf1[namelen + 20];
 584   char buf4[namelen + 20];
 585
 586   res = calloc (1, sizeof (nis_result));
 587   if (res == NULL)
 588     return NULL;
 589
 590   if (( ibreq =__create_ib_request (name, flags)) == NULL)
 591     {
 592       NIS_RES_STATUS (res) = NIS_BADNAME;
 593       return res;
 594     }
 595
 596   memcpy (&obj, obj2, sizeof (nis_object));
 597
 598   if (obj.zo_name == NULL || strlen (obj.zo_name) == 0)
 599     obj.zo_name = nis_leaf_of_r (name, buf1, sizeof (buf1));
 600
 601   if (obj.zo_owner == NULL || strlen (obj.zo_owner) == 0)
 602     obj.zo_owner = nis_local_principal ();
 603
 604   if (obj.zo_group == NULL || strlen (obj.zo_group) == 0)
 605     obj.zo_group = nis_local_group ();
 606
 607   obj.zo_domain = nis_domain_of_r (name, buf4, sizeof (buf4));
 608
 609   ibreq->ibr_obj.ibr_obj_val = nis_clone_object (&obj, NULL);
 610   if (ibreq->ibr_obj.ibr_obj_val == NULL)
 611     {
 612       nis_free_request (ibreq);
 613       NIS_RES_STATUS (res) = NIS_NOMEMORY;
 614       return res;
 615     }
 616   ibreq->ibr_obj.ibr_obj_len = 1;
 617
 618   if ((status = __do_niscall (ibreq->ibr_name, NIS_IBMODIFY,
 619                               (xdrproc_t) _xdr_ib_request,
 620                               (caddr_t) ibreq, (xdrproc_t) _xdr_nis_result,
 621                               (caddr_t) res, 0, NULL)) != NIS_SUCCESS)
 622     NIS_RES_STATUS (res) = status;
 623
 624   nis_free_request (ibreq);
 625
 626   return res;
 627 }
 628
 629 nis_result *
 630 nis_remove_entry (const_nis_name name, const nis_object *obj,
 631                   unsigned int flags)
 632 {
 633   nis_result *res;
 634   ib_request *ibreq;
 635   nis_error status;
 636
 637   res = calloc (1, sizeof (nis_result));
 638   if (res == NULL)
 639     return NULL;
 640
 641   if (name == NULL)
 642     {
 643       NIS_RES_STATUS (res) = NIS_BADNAME;
 644       return res;
 645     }
 646
 647   if ((ibreq =__create_ib_request (name, flags)) == NULL)
 648     {
 649       NIS_RES_STATUS (res) = NIS_BADNAME;
 650       return res;
 651     }
 652
 653   if (obj != NULL)
 654     {
 655       ibreq->ibr_obj.ibr_obj_val = nis_clone_object (obj, NULL);
 656       if (ibreq->ibr_obj.ibr_obj_val == NULL)
 657         {
 658           nis_free_request (ibreq);
 659           NIS_RES_STATUS (res) = NIS_NOMEMORY;
 660           return res;
 661         }
 662       ibreq->ibr_obj.ibr_obj_len = 1;
 663     }
 664
 665   if ((status = __do_niscall (ibreq->ibr_name, NIS_IBREMOVE,
 666                               (xdrproc_t) _xdr_ib_request,
 667                               (caddr_t) ibreq, (xdrproc_t) _xdr_nis_result,
 668                               (caddr_t) res, 0, NULL)) != NIS_SUCCESS)
 669     NIS_RES_STATUS (res) = status;
 670
 671   nis_free_request (ibreq);
 672
 673   return res;
 674 }
 675
 676 nis_result *
 677 nis_first_entry (const_nis_name name)
 678 {
 679   nis_result *res;
 680   ib_request *ibreq;
 681   nis_error status;
 682
 683   res = calloc (1, sizeof (nis_result));
 684   if (res == NULL)
 685     return NULL;
 686
 687   if (name == NULL)
 688     {
 689       NIS_RES_STATUS (res) = NIS_BADNAME;
 690       return res;
 691     }
 692
 693   ibreq = __create_ib_request (name, 0);
 694   if (ibreq == NULL)
 695     {
 696       NIS_RES_STATUS (res) = NIS_BADNAME;
 697       return res;
 698     }
 699
 700   status = __do_niscall (ibreq->ibr_name, NIS_IBFIRST,
 701                          (xdrproc_t) _xdr_ib_request,
 702                          (caddr_t) ibreq, (xdrproc_t) _xdr_nis_result,
 703                          (caddr_t) res, 0, NULL);
 704
 705   if (status != NIS_SUCCESS)
 706     NIS_RES_STATUS (res) = status;
 707
 708   nis_free_request (ibreq);
 709
 710   return res;
 711 }
 712
 713 nis_result *
 714 nis_next_entry (const_nis_name name, const netobj *cookie)
 715 {
 716   nis_result *res;
 717   ib_request *ibreq;
 718   nis_error status;
 719
 720   res = calloc (1, sizeof (nis_result));
 721   if (res == NULL)
 722     return NULL;
 723
 724   if (name == NULL)
 725     {
 726       NIS_RES_STATUS (res) = NIS_BADNAME;
 727       return res;
 728     }
 729
 730   ibreq = __create_ib_request (name, 0);
 731   if (ibreq == NULL)
 732     {
 733       NIS_RES_STATUS (res) = NIS_BADNAME;
 734       return res;
 735     }
 736
 737   if (cookie != NULL)
 738     {
 739       ibreq->ibr_cookie.n_bytes = cookie->n_bytes;
 740       ibreq->ibr_cookie.n_len = cookie->n_len;
 741     }
 742
 743   status = __do_niscall (ibreq->ibr_name, NIS_IBNEXT,
 744                          (xdrproc_t) _xdr_ib_request,
 745                          (caddr_t) ibreq, (xdrproc_t) _xdr_nis_result,
 746                          (caddr_t) res, 0, NULL);
 747
 748   if (status != NIS_SUCCESS)
 749     NIS_RES_STATUS (res) = status;
 750
 751   if (cookie != NULL)
 752     {
 753       /* Don't give cookie free, it is not from us */
 754       ibreq->ibr_cookie.n_bytes = NULL;
 755       ibreq->ibr_cookie.n_len = 0;
 756     }
 757
 758   nis_free_request (ibreq);
 759
 760   return res;
 761 }