* nis/nss_nisplus/nisplus-service.c: Fix locking to use
[glibc.git] / nis / nis_table.c
blobcfa7cef350800263dc6486eefb23f779aa55881c
1 /* Copyright (c) 1997,1998,1999,2003,2004,2005 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Thorsten Kukuk <kukuk@suse.de>, 1997.
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.
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.
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. */
20 #include <string.h>
21 #include <rpcsvc/nis.h>
23 #include "nis_xdr.h"
24 #include "nis_intern.h"
27 static struct ib_request *
28 __create_ib_request (const_nis_name name, unsigned int flags)
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;
35 if (ibreq == NULL)
36 return NULL;
38 ibreq->ibr_flags = flags;
40 char *cptr = strdupa (name);
42 /* Not of "[key=value,key=value,...],foo.." format? */
43 if (cptr[0] != '[')
44 return (ibreq->ibr_name = strdup (cptr)) == NULL ? NULL : ibreq;
46 /* "[key=value,...],foo" format */
47 ibreq->ibr_name = strchr (cptr, ']');
48 if (ibreq->ibr_name == NULL || ibreq->ibr_name[1] != ',')
50 /* The object has not really been built yet so we use free. */
51 free (ibreq);
52 return NULL;
55 /* Check if we have an entry of "[key=value,],bar". If, remove the "," */
56 if (ibreq->ibr_name[-1] == ',')
57 ibreq->ibr_name[-1] = '\0';
58 else
59 ibreq->ibr_name[0] = '\0';
60 ibreq->ibr_name += 2;
61 ibreq->ibr_name = strdup (ibreq->ibr_name);
62 if (ibreq->ibr_name == NULL)
64 free_null:
65 while (search_len-- > 0)
67 free (search_val[search_len].zattr_ndx);
68 free (search_val[search_len].zattr_val.zattr_val_val);
70 free (search_val);
71 nis_free_request (ibreq);
72 return NULL;
75 ++cptr; /* Remove "[" */
77 while (cptr != NULL && cptr[0] != '\0')
79 char *key = cptr;
80 char *val = strchr (cptr, '=');
82 cptr = strchr (key, ',');
83 if (cptr != NULL)
84 *cptr++ = '\0';
86 if (!val)
88 nis_free_request (ibreq);
89 return NULL;
91 *val++ = '\0';
92 if ((search_len + 1) >= size)
94 size += 1;
95 nis_attr *newp = realloc (search_val, size * sizeof (nis_attr));
96 if (newp == NULL)
97 goto free_null;
98 search_val = newp;
100 search_val[search_len].zattr_ndx = strdup (key);
101 if ((search_val[search_len].zattr_ndx) == NULL)
102 goto free_null;
104 search_val[search_len].zattr_val.zattr_val_len = strlen (val) + 1;
105 search_val[search_len].zattr_val.zattr_val_val = strdup (val);
106 if (search_val[search_len].zattr_val.zattr_val_val == NULL)
108 free (search_val[search_len].zattr_ndx);
109 goto free_null;
112 ++search_len;
115 ibreq->ibr_srch.ibr_srch_val = search_val;
116 ibreq->ibr_srch.ibr_srch_len = search_len;
118 return ibreq;
121 static const struct timeval RPCTIMEOUT = {10, 0};
123 static char *
124 __get_tablepath (char *name, dir_binding *bptr)
126 enum clnt_stat result;
127 nis_result res;
128 struct ns_request req;
130 memset (&res, '\0', sizeof (res));
132 req.ns_name = name;
133 req.ns_object.ns_object_len = 0;
134 req.ns_object.ns_object_val = NULL;
136 result = clnt_call (bptr->clnt, NIS_LOOKUP, (xdrproc_t) _xdr_ns_request,
137 (caddr_t) &req, (xdrproc_t) _xdr_nis_result,
138 (caddr_t) &res, RPCTIMEOUT);
140 const char *cptr;
141 if (result == RPC_SUCCESS && NIS_RES_STATUS (&res) == NIS_SUCCESS
142 && __type_of (NIS_RES_OBJECT (&res)) == NIS_TABLE_OBJ)
143 cptr = NIS_RES_OBJECT (&res)->TA_data.ta_path;
144 else
145 cptr = "";
147 return strdup (cptr);
150 nis_result *
151 nis_list (const_nis_name name, unsigned int flags,
152 int (*callback) (const_nis_name name,
153 const nis_object *object,
154 const void *userdata),
155 const void *userdata)
157 nis_result *res = calloc (1, sizeof (nis_result));
158 ib_request *ibreq;
159 int status;
160 enum clnt_stat clnt_status;
161 int count_links = 0; /* We will only follow NIS_MAXLINKS links! */
162 int done = 0;
163 nis_name *names;
164 nis_name namebuf[2] = {NULL, NULL};
165 int name_nr = 0;
166 nis_cb *cb = NULL;
167 char *tableptr, *tablepath = NULL;
168 int have_tablepath = 0;
169 int first_try = 0; /* Do we try the old binding at first ? */
171 if (res == NULL)
172 return NULL;
174 if (name == NULL)
176 NIS_RES_STATUS (res) = NIS_BADNAME;
177 return res;
180 if ((ibreq = __create_ib_request (name, flags)) == NULL)
182 NIS_RES_STATUS (res) = NIS_BADNAME;
183 return res;
186 if ((flags & EXPAND_NAME)
187 && ibreq->ibr_name[strlen (ibreq->ibr_name) - 1] != '.')
189 names = nis_getnames (ibreq->ibr_name);
190 free (ibreq->ibr_name);
191 ibreq->ibr_name = NULL;
192 if (names == NULL)
194 nis_free_request (ibreq);
195 NIS_RES_STATUS (res) = NIS_BADNAME;
196 return res;
198 ibreq->ibr_name = strdup (names[name_nr]);
199 if (ibreq->ibr_name == NULL)
201 nis_free_request (ibreq);
202 NIS_RES_STATUS (res) = NIS_NOMEMORY;
203 return res;
206 else
208 names = namebuf;
209 names[name_nr] = ibreq->ibr_name;
212 cb = NULL;
214 while (!done)
216 dir_binding bptr;
217 directory_obj *dir = NULL;
219 memset (res, '\0', sizeof (nis_result));
221 status = __nisfind_server (ibreq->ibr_name, &dir);
222 if (status != NIS_SUCCESS)
224 nis_free_request (ibreq);
225 NIS_RES_STATUS (res) = status;
226 return res;
229 status = __nisbind_create (&bptr, dir->do_servers.do_servers_val,
230 dir->do_servers.do_servers_len, flags);
231 if (status != NIS_SUCCESS)
233 nis_free_request (ibreq);
234 NIS_RES_STATUS (res) = status;
235 nis_free_directory (dir);
236 return res;
239 while (__nisbind_connect (&bptr) != NIS_SUCCESS)
240 if (__nisbind_next (&bptr) != NIS_SUCCESS)
242 __nisbind_destroy (&bptr);
243 nis_free_directory (dir);
244 nis_free_request (ibreq);
245 NIS_RES_STATUS (res) = NIS_NAMEUNREACHABLE;
246 return res;
249 if (callback != NULL)
251 cb = __nis_create_callback (callback, userdata, flags);
252 ibreq->ibr_cbhost.ibr_cbhost_len = 1;
253 ibreq->ibr_cbhost.ibr_cbhost_val = cb->serv;
256 again:
257 clnt_status = clnt_call (bptr.clnt, NIS_IBLIST,
258 (xdrproc_t) _xdr_ib_request, (caddr_t) ibreq,
259 (xdrproc_t) _xdr_nis_result,
260 (caddr_t) res, RPCTIMEOUT);
262 if (clnt_status != RPC_SUCCESS)
263 NIS_RES_STATUS (res) = NIS_RPCERROR;
264 else
265 switch (NIS_RES_STATUS (res))
266 { /* start switch */
267 case NIS_PARTIAL:
268 case NIS_SUCCESS:
269 case NIS_S_SUCCESS:
270 if (__type_of (NIS_RES_OBJECT (res)) == NIS_LINK_OBJ &&
271 flags & FOLLOW_LINKS) /* We are following links. */
273 free (ibreq->ibr_name);
274 ibreq->ibr_name = NULL;
275 /* If we hit the link limit, bail. */
276 if (count_links > NIS_MAXLINKS)
278 NIS_RES_STATUS (res) = NIS_LINKNAMEERROR;
279 ++done;
280 break;
282 ++count_links;
283 ibreq->ibr_name =
284 strdup (NIS_RES_OBJECT (res)->LI_data.li_name);
285 if (ibreq->ibr_name == NULL)
287 nis_free_request (ibreq);
288 NIS_RES_STATUS (res) = NIS_NOMEMORY;
289 return res;
291 if (NIS_RES_OBJECT (res)->LI_data.li_attrs.li_attrs_len)
292 if (ibreq->ibr_srch.ibr_srch_len == 0)
294 ibreq->ibr_srch.ibr_srch_len =
295 NIS_RES_OBJECT (res)->LI_data.li_attrs.li_attrs_len;
296 ibreq->ibr_srch.ibr_srch_val =
297 NIS_RES_OBJECT (res)->LI_data.li_attrs.li_attrs_val;
299 nis_freeresult (res);
300 res = calloc (1, sizeof (nis_result));
301 if (res == NULL)
303 if (have_tablepath)
304 free (tablepath);
305 __nisbind_destroy (&bptr);
306 nis_free_directory (dir);
307 return NULL;
309 first_try = 1; /* Try at first the old binding */
310 goto again;
312 else if ((flags & FOLLOW_PATH) &&
313 NIS_RES_STATUS (res) == NIS_PARTIAL)
315 if (!have_tablepath)
317 tablepath = __get_tablepath (ibreq->ibr_name, &bptr);
318 tableptr = tablepath;
319 have_tablepath = 1;
321 if (tableptr == NULL)
323 ++done;
324 break;
326 free (ibreq->ibr_name);
327 ibreq->ibr_name = strsep (&tableptr, ":");
328 if (ibreq->ibr_name == NULL || ibreq->ibr_name[0] == '\0')
330 ibreq->ibr_name = strdup ("");
331 if (ibreq->ibr_name == NULL)
333 nis_free_request (ibreq);
334 NIS_RES_STATUS (res) = NIS_NOMEMORY;
335 return res;
337 ++done;
339 else
341 ibreq->ibr_name = strdup (ibreq->ibr_name);
342 nis_freeresult (res);
343 res = calloc (1, sizeof (nis_result));
344 if (res == NULL || ibreq->ibr_name == NULL)
346 free (ibreq->ibr_name);
347 free (res);
348 nis_free_request (ibreq);
349 if (have_tablepath)
350 free (tablepath);
351 __nisbind_destroy (&bptr);
352 nis_free_directory (dir);
353 return NULL;
355 first_try = 1;
356 goto again;
359 else
360 ++done;
361 break;
362 case NIS_CBRESULTS:
363 if (cb != NULL)
365 __nis_do_callback (&bptr, &res->cookie, cb);
366 NIS_RES_STATUS (res) = cb->result;
368 if (!(flags & ALL_RESULTS))
369 ++done;
370 else
372 if (!have_tablepath)
374 tablepath = __get_tablepath (ibreq->ibr_name, &bptr);
375 tableptr = tablepath;
376 have_tablepath = 1;
378 if (tableptr == NULL)
380 ++done;
381 break;
383 free (ibreq->ibr_name);
384 ibreq->ibr_name = strsep (&tableptr, ":");
385 if (ibreq->ibr_name == NULL || ibreq->ibr_name[0] == '\0')
387 ibreq->ibr_name = strdup ("");
388 ++done;
390 else
391 ibreq->ibr_name = strdup (ibreq->ibr_name);
392 if (ibreq->ibr_name == NULL)
394 nis_free_request (ibreq);
395 NIS_RES_STATUS (res) = NIS_NOMEMORY;
396 return res;
400 break;
401 case NIS_SYSTEMERROR:
402 case NIS_NOSUCHNAME:
403 case NIS_NOT_ME:
404 /* If we had first tried the old binding, do nothing, but
405 get a new binding */
406 if (!first_try)
408 if (__nisbind_next (&bptr) != NIS_SUCCESS)
410 ++done;
411 break; /* No more servers to search */
413 while (__nisbind_connect (&bptr) != NIS_SUCCESS)
415 if (__nisbind_next (&bptr) != NIS_SUCCESS)
417 ++done;
418 break; /* No more servers to search */
421 goto again;
423 break;
424 default:
425 if (!first_try)
427 /* Try the next domainname if we don't follow a link. */
428 free (ibreq->ibr_name);
429 ibreq->ibr_name = NULL;
430 if (count_links)
432 NIS_RES_STATUS (res) = NIS_LINKNAMEERROR;
433 ++done;
434 break;
436 ++name_nr;
437 if (names[name_nr] == NULL)
439 ++done;
440 break;
442 ibreq->ibr_name = strdup (names[name_nr]);
443 if (ibreq->ibr_name == NULL)
445 nis_free_request (ibreq);
446 NIS_RES_STATUS (res) = NIS_NOMEMORY;
447 return res;
449 first_try = 1; /* Try old binding at first */
450 goto again;
452 break;
454 first_try = 0;
456 if (cb)
458 __nis_destroy_callback (cb);
459 ibreq->ibr_cbhost.ibr_cbhost_len = 0;
460 ibreq->ibr_cbhost.ibr_cbhost_val = NULL;
463 __nisbind_destroy (&bptr);
464 nis_free_directory (dir);
467 if (names != namebuf)
468 nis_freenames (names);
470 nis_free_request (ibreq);
472 return res;
474 libnsl_hidden_def (nis_list)
476 nis_result *
477 nis_add_entry (const_nis_name name, const nis_object *obj2, unsigned int flags)
479 nis_object obj;
480 nis_result *res;
481 nis_error status;
482 ib_request *ibreq;
483 size_t namelen = strlen (name);
484 char buf1[namelen + 20];
485 char buf4[namelen + 20];
487 res = calloc (1, sizeof (nis_result));
488 if (res == NULL)
489 return NULL;
491 if (name == NULL)
493 NIS_RES_STATUS (res) = NIS_BADNAME;
494 return res;
497 if ((ibreq = __create_ib_request (name, flags)) == NULL)
499 NIS_RES_STATUS (res) = NIS_BADNAME;
500 return res;
503 memcpy (&obj, obj2, sizeof (nis_object));
505 if (obj.zo_name == NULL || strlen (obj.zo_name) == 0)
506 obj.zo_name = nis_leaf_of_r (name, buf1, sizeof (buf1));
508 if (obj.zo_owner == NULL || strlen (obj.zo_owner) == 0)
509 obj.zo_owner = nis_local_principal ();
511 if (obj.zo_group == NULL || strlen (obj.zo_group) == 0)
512 obj.zo_group = nis_local_group ();
514 obj.zo_domain = nis_domain_of_r (name, buf4, sizeof (buf4));
516 ibreq->ibr_obj.ibr_obj_val = nis_clone_object (&obj, NULL);
517 if (ibreq->ibr_obj.ibr_obj_val == NULL)
519 nis_free_request (ibreq);
520 NIS_RES_STATUS (res) = NIS_NOMEMORY;
521 return res;
523 ibreq->ibr_obj.ibr_obj_len = 1;
525 if ((status = __do_niscall (ibreq->ibr_name, NIS_IBADD,
526 (xdrproc_t) _xdr_ib_request,
527 (caddr_t) ibreq,
528 (xdrproc_t) _xdr_nis_result,
529 (caddr_t) res, 0, NULL)) != NIS_SUCCESS)
530 NIS_RES_STATUS (res) = status;
532 nis_free_request (ibreq);
534 return res;
537 nis_result *
538 nis_modify_entry (const_nis_name name, const nis_object *obj2,
539 unsigned int flags)
541 nis_object obj;
542 nis_result *res;
543 nis_error status;
544 ib_request *ibreq;
545 size_t namelen = strlen (name);
546 char buf1[namelen + 20];
547 char buf4[namelen + 20];
549 res = calloc (1, sizeof (nis_result));
550 if (res == NULL)
551 return NULL;
553 if (( ibreq =__create_ib_request (name, flags)) == NULL)
555 NIS_RES_STATUS (res) = NIS_BADNAME;
556 return res;
559 memcpy (&obj, obj2, sizeof (nis_object));
561 if (obj.zo_name == NULL || strlen (obj.zo_name) == 0)
562 obj.zo_name = nis_leaf_of_r (name, buf1, sizeof (buf1));
564 if (obj.zo_owner == NULL || strlen (obj.zo_owner) == 0)
565 obj.zo_owner = nis_local_principal ();
567 if (obj.zo_group == NULL || strlen (obj.zo_group) == 0)
568 obj.zo_group = nis_local_group ();
570 obj.zo_domain = nis_domain_of_r (name, buf4, sizeof (buf4));
572 ibreq->ibr_obj.ibr_obj_val = nis_clone_object (&obj, NULL);
573 if (ibreq->ibr_obj.ibr_obj_val == NULL)
575 nis_free_request (ibreq);
576 NIS_RES_STATUS (res) = NIS_NOMEMORY;
577 return res;
579 ibreq->ibr_obj.ibr_obj_len = 1;
581 if ((status = __do_niscall (ibreq->ibr_name, NIS_IBMODIFY,
582 (xdrproc_t) _xdr_ib_request,
583 (caddr_t) ibreq, (xdrproc_t) _xdr_nis_result,
584 (caddr_t) res, 0, NULL)) != NIS_SUCCESS)
585 NIS_RES_STATUS (res) = status;
587 nis_free_request (ibreq);
589 return res;
592 nis_result *
593 nis_remove_entry (const_nis_name name, const nis_object *obj,
594 unsigned int flags)
596 nis_result *res;
597 ib_request *ibreq;
598 nis_error status;
600 res = calloc (1, sizeof (nis_result));
601 if (res == NULL)
602 return NULL;
604 if (name == NULL)
606 NIS_RES_STATUS (res) = NIS_BADNAME;
607 return res;
610 if ((ibreq =__create_ib_request (name, flags)) == NULL)
612 NIS_RES_STATUS (res) = NIS_BADNAME;
613 return res;
616 if (obj != NULL)
618 ibreq->ibr_obj.ibr_obj_val = nis_clone_object (obj, NULL);
619 if (ibreq->ibr_obj.ibr_obj_val == NULL)
621 nis_free_request (ibreq);
622 NIS_RES_STATUS (res) = NIS_NOMEMORY;
623 return res;
625 ibreq->ibr_obj.ibr_obj_len = 1;
628 if ((status = __do_niscall (ibreq->ibr_name, NIS_IBREMOVE,
629 (xdrproc_t) _xdr_ib_request,
630 (caddr_t) ibreq, (xdrproc_t) _xdr_nis_result,
631 (caddr_t) res, 0, NULL)) != NIS_SUCCESS)
632 NIS_RES_STATUS (res) = status;
634 nis_free_request (ibreq);
636 return res;
639 nis_result *
640 nis_first_entry (const_nis_name name)
642 nis_result *res;
643 ib_request *ibreq;
644 nis_error status;
646 res = calloc (1, sizeof (nis_result));
647 if (res == NULL)
648 return NULL;
650 if (name == NULL)
652 NIS_RES_STATUS (res) = NIS_BADNAME;
653 return res;
656 ibreq = __create_ib_request (name, 0);
657 if (ibreq == NULL)
659 NIS_RES_STATUS (res) = NIS_BADNAME;
660 return res;
663 status = __do_niscall (ibreq->ibr_name, NIS_IBFIRST,
664 (xdrproc_t) _xdr_ib_request,
665 (caddr_t) ibreq, (xdrproc_t) _xdr_nis_result,
666 (caddr_t) res, 0, NULL);
668 if (status != NIS_SUCCESS)
669 NIS_RES_STATUS (res) = status;
671 nis_free_request (ibreq);
673 return res;
676 nis_result *
677 nis_next_entry (const_nis_name name, const netobj *cookie)
679 nis_result *res;
680 ib_request *ibreq;
681 nis_error status;
683 res = calloc (1, sizeof (nis_result));
684 if (res == NULL)
685 return NULL;
687 if (name == NULL)
689 NIS_RES_STATUS (res) = NIS_BADNAME;
690 return res;
693 ibreq = __create_ib_request (name, 0);
694 if (ibreq == NULL)
696 NIS_RES_STATUS (res) = NIS_BADNAME;
697 return res;
700 if (cookie != NULL)
702 ibreq->ibr_cookie.n_bytes = cookie->n_bytes;
703 ibreq->ibr_cookie.n_len = cookie->n_len;
706 status = __do_niscall (ibreq->ibr_name, NIS_IBNEXT,
707 (xdrproc_t) _xdr_ib_request,
708 (caddr_t) ibreq, (xdrproc_t) _xdr_nis_result,
709 (caddr_t) res, 0, NULL);
711 if (status != NIS_SUCCESS)
712 NIS_RES_STATUS (res) = status;
714 if (cookie != NULL)
716 /* Don't give cookie free, it is not from us */
717 ibreq->ibr_cookie.n_bytes = NULL;
718 ibreq->ibr_cookie.n_len = 0;
721 nis_free_request (ibreq);
723 return res;