xref: /illumos-gate/usr/src/lib/libidmap/common/idmap_api.c (revision cd37da7426f0c49c14ad9a8a07638ca971477566)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 /*
22  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
23  * Use is subject to license terms.
24  */
25 
26 #pragma ident	"%Z%%M%	%I%	%E% SMI"
27 
28 /*
29  * libidmap API
30  */
31 
32 #include <stdlib.h>
33 #include <inttypes.h>
34 #include <errno.h>
35 #include <strings.h>
36 #include <ctype.h>
37 #include <sys/param.h>
38 #include <sys/types.h>
39 #include <sys/stat.h>
40 #include <dlfcn.h>
41 #include <libintl.h>
42 #include <ucontext.h>
43 #include "idmap_impl.h"
44 
45 static struct timeval TIMEOUT = { 25, 0 };
46 
47 static int idmap_stat2errno(idmap_stat);
48 static idmap_stat idmap_strdupnull(char **, const char *);
49 
50 #define	__ITER_CREATE(itera, argu, handl, ityp)\
51 	if (handl == NULL) {\
52 		errno = EINVAL;\
53 		return (IDMAP_ERR_ARG);\
54 	}\
55 	itera = calloc(1, sizeof (*itera));\
56 	if (itera == NULL) {\
57 		errno = ENOMEM;\
58 		return (IDMAP_ERR_MEMORY);\
59 	}\
60 	argu = calloc(1, sizeof (*argu));\
61 	if (argu == NULL) {\
62 		free(itera);\
63 		errno = ENOMEM;\
64 		return (IDMAP_ERR_MEMORY);\
65 	}\
66 	itera->ih = handl;\
67 	itera->type = ityp;\
68 	itera->retcode = IDMAP_NEXT;\
69 	itera->limit = 1024;\
70 	itera->arg = argu;
71 
72 
73 #define	__ITER_ERR_RETURN(itera, argu, xdr_argu, iretcod)\
74 	if (argu) {\
75 		xdr_free(xdr_argu, (caddr_t)argu);\
76 		free(argu);\
77 	}\
78 	if (itera)\
79 		free(itera);\
80 	return (iretcod);
81 
82 
83 #define	__ITER_CHECK(itera, ityp)\
84 	if (itera == NULL) {\
85 		errno = EINVAL;\
86 		return (IDMAP_ERR_ARG);\
87 	}\
88 	if (itera->type != ityp) {\
89 		errno = EINVAL;\
90 		return (IDMAP_ERR_ARG);\
91 	}
92 
93 #define	EMPTY_STRING(str)	(str == NULL || *str == '\0')
94 
95 /*
96  * Free memory allocated by libidmap API
97  *
98  * Input:
99  * ptr - memory to be freed
100  */
101 void
102 idmap_free(void *ptr)
103 {
104 	free(ptr);
105 }
106 
107 
108 #define	MIN_STACK_NEEDS	16384
109 
110 /*
111  * Create and Initialize idmap client handle for rpc/doors
112  *
113  * Output:
114  * handle - idmap handle
115  */
116 idmap_stat
117 idmap_init(idmap_handle_t **handle)
118 {
119 	CLIENT			*clnt = NULL;
120 	struct idmap_handle	*hptr;
121 	uint_t			sendsz = 0;
122 	stack_t			st;
123 
124 	*handle = NULL;
125 	hptr = (struct idmap_handle *)calloc(1, sizeof (*hptr));
126 	if (hptr == NULL)
127 		return (IDMAP_ERR_MEMORY);
128 
129 	/*
130 	 * clnt_door_call() alloca()s sendsz bytes (twice too, once for
131 	 * the call args buffer and once for the call result buffer), so
132 	 * we want to pick a sendsz that will be large enough, but not
133 	 * too large.
134 	 */
135 	if (stack_getbounds(&st) == 0) {
136 		/*
137 		 * Estimate how much stack space is left;
138 		 * st.ss_sp is the top of stack.
139 		 */
140 		if ((char *)&sendsz < (char *)st.ss_sp)
141 			/* stack grows up */
142 			sendsz = ((char *)st.ss_sp - (char *)&sendsz);
143 		else
144 			/* stack grows down */
145 			sendsz = ((char *)&sendsz - (char *)st.ss_sp);
146 
147 		/*
148 		 * Take much of the stack space left, divided by two,
149 		 * but leave enough for our needs (just a guess!), and
150 		 * if we can't, then roll the dice.
151 		 */
152 		sendsz = RNDUP(sendsz / 2);
153 		if (sendsz < MIN_STACK_NEEDS)
154 			sendsz = 0;	/* RPC call may fail */
155 		else if (sendsz > IDMAP_MAX_DOOR_RPC)
156 			sendsz = IDMAP_MAX_DOOR_RPC;
157 	}
158 
159 	clnt = clnt_door_create(IDMAP_PROG, IDMAP_V1, sendsz);
160 	if (clnt == NULL) {
161 		free(hptr);
162 		return (IDMAP_ERR_RPC);
163 	}
164 	hptr->type = _IDMAP_HANDLE_RPC_DOORS;
165 	hptr->privhandle = clnt;
166 	*handle = hptr;
167 	return (IDMAP_SUCCESS);
168 }
169 
170 
171 /*
172  * Finalize idmap handle
173  *
174  * Input:
175  * handle - idmap handle
176  */
177 idmap_stat
178 idmap_fini(idmap_handle_t *handle)
179 {
180 	CLIENT			*clnt;
181 	struct idmap_handle	*hptr;
182 
183 	if (handle == NULL)
184 		return (IDMAP_SUCCESS);
185 
186 	hptr = (struct idmap_handle *)handle;
187 
188 	switch (hptr->type) {
189 	case _IDMAP_HANDLE_RPC_DOORS:
190 		clnt = (CLIENT *)hptr->privhandle;
191 		if (clnt) {
192 			if (clnt->cl_auth)
193 				auth_destroy(clnt->cl_auth);
194 			clnt_destroy(clnt);
195 		}
196 		break;
197 	default:
198 		break;
199 	}
200 	free(hptr);
201 	return (IDMAP_SUCCESS);
202 }
203 
204 
205 
206 /*
207  * Create/Initialize handle for updates
208  *
209  * Output:
210  * udthandle - update handle
211  */
212 idmap_stat
213 idmap_udt_create(idmap_handle_t *handle, idmap_udt_handle_t **udthandle)
214 {
215 	idmap_udt_handle_t	*tmp;
216 
217 	if (handle == NULL || udthandle == NULL) {
218 		errno = EINVAL;
219 		return (IDMAP_ERR_ARG);
220 	}
221 	if ((tmp = calloc(1, sizeof (*tmp))) == NULL) {
222 		errno = ENOMEM;
223 		return (IDMAP_ERR_MEMORY);
224 	}
225 
226 	tmp->ih = handle;
227 	*udthandle = tmp;
228 	return (IDMAP_SUCCESS);
229 }
230 
231 
232 /*
233  * All the updates specified by the update handle are committed
234  * in a single transaction. i.e either all succeed or none.
235  *
236  * Input:
237  * udthandle - update handle with the update requests
238  *
239  * Return value:
240  * Status of the commit
241  */
242 idmap_stat
243 idmap_udt_commit(idmap_udt_handle_t *udthandle)
244 {
245 	CLIENT			*clnt;
246 	enum clnt_stat		clntstat;
247 	idmap_update_res	res;
248 	idmap_stat		retcode;
249 
250 	if (udthandle == NULL) {
251 		errno = EINVAL;
252 		return (IDMAP_ERR_ARG);
253 	}
254 
255 	(void) memset(&res, 0, sizeof (res));
256 
257 	_IDMAP_GET_CLIENT_HANDLE(udthandle->ih, clnt);
258 	clntstat = clnt_call(clnt, IDMAP_UPDATE,
259 	    (xdrproc_t)xdr_idmap_update_batch, (caddr_t)&udthandle->batch,
260 	    (xdrproc_t)xdr_idmap_update_res, (caddr_t)&res,
261 	    TIMEOUT);
262 
263 	if (clntstat != RPC_SUCCESS) {
264 		retcode = _idmap_rpc2stat(clnt);
265 		goto out;
266 	}
267 
268 	retcode = udthandle->commit_stat = res.retcode;
269 	udthandle->error_index = res.error_index;
270 
271 	if (retcode != IDMAP_SUCCESS) {
272 
273 		if (udthandle->error_index < 0)
274 			goto out;
275 
276 		retcode = idmap_namerule_cpy(&udthandle->error_rule,
277 		    &res.error_rule);
278 		if (retcode != IDMAP_SUCCESS) {
279 			udthandle->error_index = -2;
280 			goto out;
281 		}
282 
283 		retcode = idmap_namerule_cpy(&udthandle->conflict_rule,
284 		    &res.conflict_rule);
285 		if (retcode != IDMAP_SUCCESS) {
286 			udthandle->error_index = -2;
287 			goto out;
288 		}
289 	}
290 
291 	retcode = res.retcode;
292 
293 
294 out:
295 	/* reset handle so that it can be used again */
296 	if (retcode == IDMAP_SUCCESS) {
297 		_IDMAP_RESET_UDT_HANDLE(udthandle);
298 	}
299 
300 	(void) xdr_free(xdr_idmap_update_res, (caddr_t)&res);
301 	errno = idmap_stat2errno(retcode);
302 	return (retcode);
303 }
304 
305 
306 static void
307 idmap_namerule_parts_clear(char **windomain, char **winname,
308     char **unixname, boolean_t *is_user, boolean_t *is_wuser,
309     boolean_t *is_nt4, int *direction)
310 {
311 	if (windomain)
312 		*windomain = NULL;
313 	if (winname)
314 		*winname = NULL;
315 	if (unixname)
316 		*unixname = NULL;
317 
318 	if (is_nt4)
319 		*is_nt4 = 0;
320 	if (is_user)
321 		*is_user = -1;
322 	if (is_wuser)
323 		*is_wuser = -1;
324 	if (direction)
325 		*direction = IDMAP_DIRECTION_UNDEF;
326 }
327 
328 static idmap_stat
329 idmap_namerule2parts(idmap_namerule *rule,
330     char **windomain, char **winname,
331     char **unixname, boolean_t *is_user, boolean_t *is_wuser,
332     boolean_t *is_nt4, int *direction)
333 {
334 	idmap_stat retcode;
335 
336 	if (EMPTY_STRING(rule->winname) && EMPTY_STRING(rule->unixname))
337 		return (IDMAP_ERR_NORESULT);
338 
339 
340 	retcode = idmap_strdupnull(windomain, rule->windomain);
341 	if (retcode != IDMAP_SUCCESS)
342 		goto errout;
343 
344 	retcode = idmap_strdupnull(winname, rule->winname);
345 	if (retcode != IDMAP_SUCCESS)
346 		goto errout;
347 
348 	retcode = idmap_strdupnull(unixname, rule->unixname);
349 	if (retcode != IDMAP_SUCCESS)
350 		goto errout;
351 
352 
353 	if (is_user)
354 		*is_user = rule->is_user;
355 	if (is_wuser)
356 		*is_wuser = rule->is_wuser;
357 	if (is_nt4)
358 		*is_nt4 = rule->is_nt4;
359 	if (direction)
360 		*direction = rule->direction;
361 
362 
363 	return (IDMAP_SUCCESS);
364 
365 errout:
366 	if (windomain && *windomain)
367 		free(*windomain);
368 	if (winname && *winname)
369 		free(*winname);
370 	if (unixname && *unixname)
371 		free(*unixname);
372 
373 	idmap_namerule_parts_clear(windomain, winname,
374 	    unixname, is_user, is_wuser, is_nt4, direction);
375 
376 	return (retcode);
377 
378 }
379 
380 /*
381  * Retrieve the index of the failed batch element. error_index == -1
382  * indicates failure at the beginning, -2 at the end.
383  *
384  * If idmap_udt_commit didn't return error, the returned value is undefined.
385  *
386  * Return value:
387  * IDMAP_SUCCESS
388  */
389 
390 idmap_stat
391 idmap_udt_get_error_index(idmap_udt_handle_t *udthandle,
392     int64_t *error_index)
393 {
394 	if (error_index)
395 		*error_index = udthandle->error_index;
396 
397 	return (IDMAP_SUCCESS);
398 }
399 
400 
401 /*
402  * Retrieve the rule which caused the batch to fail. If
403  * idmap_udt_commit didn't return error or if error_index is < 0, the
404  * retrieved rule is undefined.
405  *
406  * Return value:
407  * IDMAP_ERR_NORESULT if there is no error rule.
408  * IDMAP_SUCCESS if the rule was obtained OK.
409  * other error code (IDMAP_ERR_NOMEMORY etc)
410  */
411 
412 idmap_stat
413 idmap_udt_get_error_rule(idmap_udt_handle_t *udthandle,
414     char **windomain, char **winname,
415     char **unixname, boolean_t *is_user, boolean_t *is_wuser,
416     boolean_t *is_nt4, int *direction)
417 {
418 	idmap_namerule_parts_clear(windomain, winname,
419 	    unixname, is_user, is_wuser, is_nt4, direction);
420 
421 	if (udthandle->commit_stat == IDMAP_SUCCESS ||
422 	    udthandle->error_index < 0)
423 		return (IDMAP_ERR_NORESULT);
424 
425 	return (idmap_namerule2parts(
426 	    &udthandle->error_rule,
427 	    windomain,
428 	    winname,
429 	    unixname,
430 	    is_user,
431 	    is_wuser,
432 	    is_nt4,
433 	    direction));
434 }
435 
436 /*
437  * Retrieve the rule with which there was a conflict. TODO: retrieve
438  * the value.
439  *
440  * Return value:
441  * IDMAP_ERR_NORESULT if there is no error rule.
442  * IDMAP_SUCCESS if the rule was obtained OK.
443  * other error code (IDMAP_ERR_NOMEMORY etc)
444  */
445 
446 idmap_stat
447 idmap_udt_get_conflict_rule(idmap_udt_handle_t *udthandle,
448     char **windomain, char **winname,
449     char **unixname, boolean_t *is_user, boolean_t *is_wuser,
450     boolean_t *is_nt4, int *direction)
451 {
452 	idmap_namerule_parts_clear(windomain, winname,
453 	    unixname, is_user, is_wuser, is_nt4, direction);
454 
455 	if (udthandle->commit_stat != IDMAP_ERR_W2U_NAMERULE_CONFLICT &&
456 	    udthandle->commit_stat != IDMAP_ERR_U2W_NAMERULE_CONFLICT) {
457 		return (IDMAP_ERR_NORESULT);
458 	}
459 
460 	return (idmap_namerule2parts(
461 	    &udthandle->conflict_rule,
462 	    windomain,
463 	    winname,
464 	    unixname,
465 	    is_user,
466 	    is_wuser,
467 	    is_nt4,
468 	    direction));
469 }
470 
471 
472 /*
473  * Destroy the update handle
474  */
475 void
476 idmap_udt_destroy(idmap_udt_handle_t *udthandle)
477 {
478 	if (udthandle == NULL)
479 		return;
480 	(void) xdr_free(xdr_idmap_update_batch, (caddr_t)&udthandle->batch);
481 	(void) xdr_free(xdr_idmap_namerule, (caddr_t)&udthandle->error_rule);
482 	(void) xdr_free(xdr_idmap_namerule, (caddr_t)&udthandle->conflict_rule);
483 	free(udthandle);
484 }
485 
486 
487 idmap_stat
488 idmap_udt_add_namerule(idmap_udt_handle_t *udthandle, const char *windomain,
489     boolean_t is_user, boolean_t is_wuser, const char *winname,
490     const char *unixname, boolean_t is_nt4, int direction)
491 {
492 	idmap_retcode	retcode;
493 	idmap_namerule	*rule = NULL;
494 
495 	retcode = _udt_extend_batch(udthandle);
496 	if (retcode != IDMAP_SUCCESS)
497 		goto errout;
498 
499 	rule = &udthandle->batch.
500 	    idmap_update_batch_val[udthandle->next].
501 	    idmap_update_op_u.rule;
502 	rule->is_user = is_user;
503 	rule->is_wuser = is_wuser;
504 	rule->direction = direction;
505 	rule->is_nt4 = is_nt4;
506 
507 	retcode = idmap_strdupnull(&rule->windomain, windomain);
508 	if (retcode != IDMAP_SUCCESS)
509 		goto errout;
510 
511 	retcode = idmap_strdupnull(&rule->winname, winname);
512 	if (retcode != IDMAP_SUCCESS)
513 		goto errout;
514 
515 	retcode = idmap_strdupnull(&rule->unixname, unixname);
516 	if (retcode != IDMAP_SUCCESS)
517 		goto errout;
518 
519 	udthandle->batch.idmap_update_batch_val[udthandle->next].opnum =
520 	    OP_ADD_NAMERULE;
521 	udthandle->next++;
522 	return (IDMAP_SUCCESS);
523 
524 errout:
525 	/* The batch should still be usable */
526 	if (rule)
527 		(void) xdr_free(xdr_idmap_namerule, (caddr_t)rule);
528 	errno = idmap_stat2errno(retcode);
529 	return (retcode);
530 }
531 
532 
533 /* ARGSUSED */
534 idmap_stat
535 idmap_udt_rm_namerule(idmap_udt_handle_t *udthandle, boolean_t is_user,
536     boolean_t is_wuser,	const char *windomain, const char *winname,
537     const char *unixname, int direction)
538 {
539 	idmap_retcode	retcode;
540 	idmap_namerule	*rule = NULL;
541 
542 	retcode = _udt_extend_batch(udthandle);
543 	if (retcode != IDMAP_SUCCESS)
544 		goto errout;
545 
546 	rule = &udthandle->batch.
547 	    idmap_update_batch_val[udthandle->next].
548 	    idmap_update_op_u.rule;
549 	rule->is_user = is_user;
550 	rule->is_wuser = is_wuser;
551 	rule->direction = direction;
552 
553 	retcode = idmap_strdupnull(&rule->windomain, windomain);
554 	if (retcode != IDMAP_SUCCESS)
555 		goto errout;
556 
557 	retcode = idmap_strdupnull(&rule->winname, winname);
558 	if (retcode != IDMAP_SUCCESS)
559 		goto errout;
560 
561 	retcode = idmap_strdupnull(&rule->unixname, unixname);
562 	if (retcode != IDMAP_SUCCESS)
563 		goto errout;
564 
565 	udthandle->batch.idmap_update_batch_val[udthandle->next].opnum =
566 	    OP_RM_NAMERULE;
567 	udthandle->next++;
568 	return (IDMAP_SUCCESS);
569 
570 errout:
571 	if (rule)
572 		(void) xdr_free(xdr_idmap_namerule, (caddr_t)rule);
573 	errno = idmap_stat2errno(retcode);
574 	return (retcode);
575 }
576 
577 
578 /* ARGSUSED */
579 idmap_stat
580 idmap_udt_flush_namerules(idmap_udt_handle_t *udthandle)
581 {
582 	idmap_retcode	retcode;
583 
584 	retcode = _udt_extend_batch(udthandle);
585 	if (retcode != IDMAP_SUCCESS)
586 		goto errout;
587 
588 	udthandle->batch.idmap_update_batch_val[udthandle->next].opnum =
589 	    OP_FLUSH_NAMERULES;
590 	udthandle->next++;
591 	return (IDMAP_SUCCESS);
592 
593 errout:
594 	errno = idmap_stat2errno(retcode);
595 	return (retcode);
596 }
597 
598 
599 /*
600  * Set the number of entries requested per batch by the iterator
601  *
602  * Input:
603  * iter  - iterator
604  * limit - number of entries requested per batch
605  */
606 idmap_stat
607 idmap_iter_set_limit(idmap_iter_t *iter, uint64_t limit)
608 {
609 	if (iter == NULL) {
610 		errno = EINVAL;
611 		return (IDMAP_ERR_ARG);
612 	}
613 	iter->limit = limit;
614 	return (IDMAP_SUCCESS);
615 }
616 
617 
618 /*
619  * Create iterator to get name-based mapping rules
620  *
621  * Input:
622  * windomain - Windows domain
623  * is_user   - user or group rules
624  * winname   - Windows user or group name
625  * unixname  - Unix user or group name
626  *
627  * Output:
628  * iter - iterator
629  */
630 idmap_stat
631 idmap_iter_namerules(idmap_handle_t *handle, const char *windomain,
632 		boolean_t is_user, boolean_t is_wuser, const char *winname,
633 		const char *unixname, idmap_iter_t **iter)
634 {
635 
636 	idmap_iter_t			*tmpiter;
637 	idmap_list_namerules_1_argument	*arg = NULL;
638 	idmap_namerule			*rule;
639 	idmap_retcode			retcode;
640 
641 	__ITER_CREATE(tmpiter, arg, handle, IDMAP_LIST_NAMERULES);
642 
643 	rule = &arg->rule;
644 	rule->is_user = is_user;
645 	rule->is_wuser = is_wuser;
646 	rule->direction = IDMAP_DIRECTION_UNDEF;
647 
648 	retcode = idmap_strdupnull(&rule->windomain, windomain);
649 	if (retcode != IDMAP_SUCCESS)
650 		goto errout;
651 
652 	retcode = idmap_strdupnull(&rule->winname, winname);
653 	if (retcode != IDMAP_SUCCESS)
654 		goto errout;
655 
656 	retcode = idmap_strdupnull(&rule->unixname, unixname);
657 	if (retcode != IDMAP_SUCCESS)
658 		goto errout;
659 
660 	*iter = tmpiter;
661 	return (IDMAP_SUCCESS);
662 
663 errout:
664 	__ITER_ERR_RETURN(tmpiter, arg,
665 	    xdr_idmap_list_namerules_1_argument, retcode);
666 }
667 
668 
669 /*
670  * Iterate through the name-based mapping rules
671  *
672  * Input:
673  * iter - iterator
674  *
675  * Output:
676  * windomain - Windows domain
677  * winname   - Windows user or group name
678  * unixname  - Unix user or group name
679  * is_nt4    - NT4 or AD
680  * direction - bi(0), win2unix(1), unix2win(2)
681  *
682  * Return value:
683  * 0   - done
684  * 1   - more results available
685  * < 0 - error
686  */
687 idmap_stat
688 idmap_iter_next_namerule(idmap_iter_t *iter, char **windomain,
689     char **winname, char **unixname,  boolean_t *is_user,
690     boolean_t *is_wuser, boolean_t *is_nt4, int *direction)
691 {
692 	idmap_namerules_res		*namerules;
693 	idmap_list_namerules_1_argument	*arg;
694 	idmap_retcode			retcode;
695 
696 	idmap_namerule_parts_clear(windomain, winname,
697 	    unixname, is_user, is_wuser, is_nt4, direction);
698 
699 
700 	__ITER_CHECK(iter, IDMAP_LIST_NAMERULES);
701 
702 	namerules = (idmap_namerules_res *)iter->retlist;
703 	if (iter->retcode == IDMAP_NEXT && (namerules == NULL ||
704 	    iter->next >= namerules->rules.rules_len)) {
705 
706 		if ((arg = iter->arg) == NULL) {
707 			errno = EINVAL;
708 			return (IDMAP_ERR_ARG);
709 		}
710 		arg->limit = iter->limit;
711 
712 		retcode = _iter_get_next_list(IDMAP_LIST_NAMERULES,
713 		    iter, arg,
714 		    (uchar_t **)&namerules, sizeof (*namerules),
715 		    (xdrproc_t)xdr_idmap_list_namerules_1_argument,
716 		    (xdrproc_t)xdr_idmap_namerules_res);
717 		if (retcode != IDMAP_SUCCESS)
718 			return (retcode);
719 
720 		if (IDMAP_ERROR(namerules->retcode)) {
721 			retcode  = namerules->retcode;
722 			xdr_free(xdr_idmap_namerules_res, (caddr_t)namerules);
723 			free(namerules);
724 			iter->retlist = NULL;
725 			return (retcode);
726 		}
727 		iter->retcode = namerules->retcode;
728 		arg->lastrowid = namerules->lastrowid;
729 	}
730 
731 	if (namerules == NULL || namerules->rules.rules_len == 0)
732 		return (IDMAP_SUCCESS);
733 
734 	if (iter->next >= namerules->rules.rules_len) {
735 		return (IDMAP_ERR_ARG);
736 	}
737 
738 	retcode = idmap_strdupnull(windomain,
739 	    namerules->rules.rules_val[iter->next].windomain);
740 	if (retcode != IDMAP_SUCCESS)
741 		goto errout;
742 
743 	retcode = idmap_strdupnull(winname,
744 	    namerules->rules.rules_val[iter->next].winname);
745 	if (retcode != IDMAP_SUCCESS)
746 		goto errout;
747 
748 	retcode = idmap_strdupnull(unixname,
749 	    namerules->rules.rules_val[iter->next].unixname);
750 	if (retcode != IDMAP_SUCCESS)
751 		goto errout;
752 
753 	if (is_nt4)
754 		*is_nt4 = namerules->rules.rules_val[iter->next].is_nt4;
755 	if (is_user)
756 		*is_user = namerules->rules.rules_val[iter->next].is_user;
757 	if (is_wuser)
758 		*is_wuser = namerules->rules.rules_val[iter->next].is_wuser;
759 	if (direction)
760 		*direction = namerules->rules.rules_val[iter->next].direction;
761 	iter->next++;
762 
763 	if (iter->next == namerules->rules.rules_len)
764 		return (iter->retcode);
765 	else
766 		return (IDMAP_NEXT);
767 
768 errout:
769 	if (windomain && *windomain)
770 		free(*windomain);
771 	if (winname && *winname)
772 		free(*winname);
773 	if (unixname && *unixname)
774 		free(*unixname);
775 	return (retcode);
776 }
777 
778 
779 /*
780  * Create iterator to get SID to UID/GID mappings
781  *
782  * Output:
783  * iter - iterator
784  */
785 idmap_stat
786 idmap_iter_mappings(idmap_handle_t *handle, idmap_iter_t **iter)
787 {
788 	idmap_iter_t			*tmpiter;
789 	idmap_list_mappings_1_argument	*arg = NULL;
790 
791 	__ITER_CREATE(tmpiter, arg, handle, IDMAP_LIST_MAPPINGS);
792 
793 	*iter = tmpiter;
794 	return (IDMAP_SUCCESS);
795 }
796 
797 
798 /*
799  * Iterate through the SID to UID/GID mappings
800  *
801  * Input:
802  * iter - iterator
803  *
804  * Output:
805  * sid - SID in canonical form
806  * pid - UID or GID
807  *
808  * Return value:
809  * 0   - done
810  * 1   - more results available
811  * < 0 - error
812  */
813 idmap_stat
814 idmap_iter_next_mapping(idmap_iter_t *iter, char **sidprefix,
815     idmap_rid_t *rid, uid_t *pid, char **winname,
816     char **windomain, char **unixname, boolean_t *is_user,
817     boolean_t *is_wuser, int *direction)
818 {
819 	idmap_mappings_res		*mappings;
820 	idmap_list_mappings_1_argument	*arg;
821 	idmap_retcode			retcode;
822 	char				*str;
823 
824 	if (sidprefix)
825 		*sidprefix = NULL;
826 	if (rid)
827 		*rid = UINT32_MAX;
828 	if (winname)
829 		*winname = NULL;
830 	if (windomain)
831 		*windomain = NULL;
832 	if (unixname)
833 		*unixname = NULL;
834 	if (pid)
835 		*pid = UINT32_MAX;
836 	if (is_user)
837 		*is_user = -1;
838 	if (is_wuser)
839 		*is_wuser = -1;
840 	if (direction)
841 		*direction = IDMAP_DIRECTION_UNDEF;
842 
843 	__ITER_CHECK(iter, IDMAP_LIST_MAPPINGS);
844 
845 	mappings = (idmap_mappings_res *)iter->retlist;
846 	if (iter->retcode == IDMAP_NEXT && (mappings == NULL ||
847 	    iter->next >= mappings->mappings.mappings_len)) {
848 
849 		if ((arg = iter->arg) == NULL) {
850 			errno = EINVAL;
851 			return (IDMAP_ERR_ARG);
852 		}
853 		arg->limit = iter->limit;
854 
855 		retcode = _iter_get_next_list(IDMAP_LIST_MAPPINGS,
856 		    iter, arg,
857 		    (uchar_t **)&mappings, sizeof (*mappings),
858 		    (xdrproc_t)xdr_idmap_list_mappings_1_argument,
859 		    (xdrproc_t)xdr_idmap_mappings_res);
860 		if (retcode != IDMAP_SUCCESS)
861 			return (retcode);
862 
863 		if (IDMAP_ERROR(mappings->retcode)) {
864 			retcode  = mappings->retcode;
865 			xdr_free(xdr_idmap_mappings_res, (caddr_t)mappings);
866 			free(mappings);
867 			iter->retlist = NULL;
868 			return (retcode);
869 		}
870 		iter->retcode = mappings->retcode;
871 		arg->lastrowid = mappings->lastrowid;
872 	}
873 
874 	if (mappings == NULL || mappings->mappings.mappings_len == 0)
875 		return (IDMAP_SUCCESS);
876 
877 	if (iter->next >= mappings->mappings.mappings_len) {
878 		return (IDMAP_ERR_ARG);
879 	}
880 
881 	if (sidprefix) {
882 		str = mappings->mappings.mappings_val[iter->next].id1.
883 		    idmap_id_u.sid.prefix;
884 		if (str && *str != '\0') {
885 			*sidprefix = strdup(str);
886 			if (*sidprefix == NULL) {
887 				retcode = IDMAP_ERR_MEMORY;
888 				goto errout;
889 			}
890 		}
891 	}
892 	if (rid)
893 		*rid = mappings->mappings.mappings_val[iter->next].id1.
894 		    idmap_id_u.sid.rid;
895 
896 	retcode = idmap_strdupnull(windomain,
897 	    mappings->mappings.mappings_val[iter->next].id1domain);
898 	if (retcode != IDMAP_SUCCESS)
899 		goto errout;
900 
901 	retcode = idmap_strdupnull(winname,
902 	    mappings->mappings.mappings_val[iter->next].id1name);
903 	if (retcode != IDMAP_SUCCESS)
904 		goto errout;
905 
906 	retcode = idmap_strdupnull(unixname,
907 	    mappings->mappings.mappings_val[iter->next].id2name);
908 	if (retcode != IDMAP_SUCCESS)
909 		goto errout;
910 
911 
912 	if (pid)
913 		*pid = mappings->mappings.mappings_val[iter->next].id2.
914 		    idmap_id_u.uid;
915 	if (direction)
916 		*direction = mappings->mappings.mappings_val[iter->next].
917 		    direction;
918 	if (is_user)
919 		*is_user = (mappings->mappings.mappings_val[iter->next].id2
920 		    .idtype == IDMAP_UID)?1:0;
921 	if (is_wuser)
922 		*is_wuser = (mappings->mappings.mappings_val[iter->next].id1
923 		    .idtype == IDMAP_USID)?1:0;
924 
925 	iter->next++;
926 
927 	if (iter->next == mappings->mappings.mappings_len)
928 		return (iter->retcode);
929 	else
930 		return (IDMAP_NEXT);
931 
932 errout:
933 	if (sidprefix && *sidprefix)
934 		free(*sidprefix);
935 	if (winname && *winname)
936 		free(*winname);
937 	if (windomain && *windomain)
938 		free(*windomain);
939 	if (unixname && *unixname)
940 		free(*unixname);
941 	return (retcode);
942 }
943 
944 
945 /*
946  * Destroy the iterator
947  */
948 void
949 idmap_iter_destroy(idmap_iter_t *iter)
950 {
951 	xdrproc_t _xdr_argument, _xdr_result;
952 
953 	if (iter == NULL)
954 		return;
955 
956 	switch (iter->type) {
957 	case IDMAP_LIST_NAMERULES:
958 		_xdr_argument = (xdrproc_t)xdr_idmap_list_namerules_1_argument;
959 		_xdr_result = (xdrproc_t)xdr_idmap_namerules_res;
960 		break;
961 	case IDMAP_LIST_MAPPINGS:
962 		_xdr_argument = (xdrproc_t)xdr_idmap_list_mappings_1_argument;
963 		_xdr_result = (xdrproc_t)xdr_idmap_mappings_res;
964 		break;
965 	default:
966 		free(iter);
967 		return;
968 	};
969 
970 	if (iter->arg) {
971 		xdr_free(_xdr_argument, (caddr_t)iter->arg);
972 		free(iter->arg);
973 	}
974 	if (iter->retlist) {
975 		xdr_free(_xdr_result, (caddr_t)iter->retlist);
976 		free(iter->retlist);
977 	}
978 	free(iter);
979 }
980 
981 
982 /*
983  * Create handle to get SID to UID/GID mapping entries
984  *
985  * Input:
986  * gh - "get mapping" handle
987  */
988 idmap_stat
989 idmap_get_create(idmap_handle_t *handle, idmap_get_handle_t **gh)
990 {
991 	idmap_get_handle_t	*tmp;
992 
993 	/* sanity checks */
994 	if (handle == NULL || gh == NULL) {
995 		errno = EINVAL;
996 		return (IDMAP_ERR_ARG);
997 	}
998 
999 	/* allocate the handle */
1000 	if ((tmp = calloc(1, sizeof (*tmp))) == NULL) {
1001 		errno = ENOMEM;
1002 		return (IDMAP_ERR_MEMORY);
1003 	}
1004 
1005 	tmp->ih = handle;
1006 	*gh = tmp;
1007 	return (IDMAP_SUCCESS);
1008 }
1009 
1010 
1011 /*
1012  * Given SID, get UID
1013  *
1014  * Input:
1015  * sidprefix  - SID prefix
1016  * rid        - RID
1017  * flag       - flag
1018  *
1019  * Output:
1020  * stat - status of the get request
1021  * uid  - POSIX UID if stat = 0
1022  *
1023  * Note: The output parameters will be set by idmap_get_mappings()
1024  */
1025 idmap_stat
1026 idmap_get_uidbysid(idmap_get_handle_t *gh, char *sidprefix, idmap_rid_t rid,
1027 		int flag, uid_t *uid, idmap_stat *stat)
1028 {
1029 
1030 	idmap_retcode	retcode;
1031 	idmap_mapping	*mapping = NULL;
1032 
1033 	/* sanity checks */
1034 	if (gh == NULL)
1035 		return (IDMAP_ERR_ARG);
1036 	if (uid == NULL || sidprefix == NULL)
1037 		return (IDMAP_ERR_ARG);
1038 
1039 	/* Extend the request array and the return list */
1040 	if ((retcode = _get_ids_extend_batch(gh)) != IDMAP_SUCCESS)
1041 		goto errout;
1042 
1043 	/* Setup the request */
1044 	mapping = &gh->batch.idmap_mapping_batch_val[gh->next];
1045 	mapping->flag = flag;
1046 	mapping->id1.idtype = IDMAP_SID;
1047 	mapping->id1.idmap_id_u.sid.rid = rid;
1048 	if ((mapping->id1.idmap_id_u.sid.prefix = strdup(sidprefix)) == NULL) {
1049 		retcode = IDMAP_ERR_MEMORY;
1050 		goto errout;
1051 	}
1052 	mapping->id2.idtype = IDMAP_UID;
1053 
1054 	/* Setup pointers for the result */
1055 	gh->retlist[gh->next].idtype = IDMAP_UID;
1056 	gh->retlist[gh->next].uid = uid;
1057 	gh->retlist[gh->next].stat = stat;
1058 
1059 	gh->next++;
1060 	return (IDMAP_SUCCESS);
1061 
1062 errout:
1063 	/* Batch created so far should still be usable */
1064 	if (mapping)
1065 		(void) memset(mapping, 0, sizeof (*mapping));
1066 	errno = idmap_stat2errno(retcode);
1067 	return (retcode);
1068 }
1069 
1070 
1071 /*
1072  * Given SID, get GID
1073  *
1074  * Input:
1075  * sidprefix  - SID prefix
1076  * rid        - rid
1077  * flag       - flag
1078  *
1079  * Output:
1080  * stat - status of the get request
1081  * gid  - POSIX GID if stat = 0
1082  *
1083  * Note: The output parameters will be set by idmap_get_mappings()
1084  */
1085 idmap_stat
1086 idmap_get_gidbysid(idmap_get_handle_t *gh, char *sidprefix, idmap_rid_t rid,
1087 		int flag, gid_t *gid, idmap_stat *stat)
1088 {
1089 
1090 	idmap_retcode	retcode;
1091 	idmap_mapping	*mapping = NULL;
1092 
1093 	/* sanity checks */
1094 	if (gh == NULL)
1095 		return (IDMAP_ERR_ARG);
1096 	if (gid == NULL || sidprefix == NULL)
1097 		return (IDMAP_ERR_ARG);
1098 
1099 	/* Extend the request array and the return list */
1100 	if ((retcode = _get_ids_extend_batch(gh)) != IDMAP_SUCCESS)
1101 		goto errout;
1102 
1103 	/* Setup the request */
1104 	mapping = &gh->batch.idmap_mapping_batch_val[gh->next];
1105 	mapping->flag = flag;
1106 	mapping->id1.idtype = IDMAP_SID;
1107 	mapping->id1.idmap_id_u.sid.rid = rid;
1108 	if ((mapping->id1.idmap_id_u.sid.prefix = strdup(sidprefix)) == NULL) {
1109 		retcode = IDMAP_ERR_MEMORY;
1110 		goto errout;
1111 	}
1112 	mapping->id2.idtype = IDMAP_GID;
1113 
1114 	/* Setup pointers for the result */
1115 	gh->retlist[gh->next].idtype = IDMAP_GID;
1116 	gh->retlist[gh->next].gid = gid;
1117 	gh->retlist[gh->next].stat = stat;
1118 
1119 	gh->next++;
1120 	return (IDMAP_SUCCESS);
1121 
1122 errout:
1123 	if (mapping)
1124 		(void) memset(mapping, 0, sizeof (*mapping));
1125 	errno = idmap_stat2errno(retcode);
1126 	return (retcode);
1127 }
1128 
1129 
1130 /*
1131  * Given SID, get POSIX ID i.e. UID/GID
1132  *
1133  * Input:
1134  * sidprefix  - SID prefix
1135  * rid        - rid
1136  * flag       - flag
1137  *
1138  * Output:
1139  * stat    - status of the get request
1140  * is_user - user or group
1141  * pid     - POSIX UID if stat = 0 and is_user = 1
1142  *           POSIX GID if stat = 0 and is_user = 0
1143  *
1144  * Note: The output parameters will be set by idmap_get_mappings()
1145  */
1146 idmap_stat
1147 idmap_get_pidbysid(idmap_get_handle_t *gh, char *sidprefix, idmap_rid_t rid,
1148 		int flag, uid_t *pid, int *is_user, idmap_stat *stat)
1149 {
1150 	idmap_retcode	retcode;
1151 	idmap_mapping	*mapping = NULL;
1152 
1153 	/* sanity checks */
1154 	if (gh == NULL)
1155 		return (IDMAP_ERR_ARG);
1156 	if (pid == NULL || sidprefix == NULL || is_user == NULL)
1157 		return (IDMAP_ERR_ARG);
1158 
1159 	/* Extend the request array and the return list */
1160 	if ((retcode = _get_ids_extend_batch(gh)) != IDMAP_SUCCESS)
1161 		goto errout;
1162 
1163 	/* Setup the request */
1164 	mapping = &gh->batch.idmap_mapping_batch_val[gh->next];
1165 	mapping->flag = flag;
1166 	mapping->id1.idtype = IDMAP_SID;
1167 	mapping->id1.idmap_id_u.sid.rid = rid;
1168 	if ((mapping->id1.idmap_id_u.sid.prefix = strdup(sidprefix)) == NULL) {
1169 		retcode = IDMAP_ERR_MEMORY;
1170 		goto errout;
1171 	}
1172 	mapping->id2.idtype = IDMAP_POSIXID;
1173 
1174 	/* Setup pointers for the result */
1175 	gh->retlist[gh->next].idtype = IDMAP_POSIXID;
1176 	gh->retlist[gh->next].uid = pid;
1177 	gh->retlist[gh->next].gid = pid;
1178 	gh->retlist[gh->next].is_user = is_user;
1179 	gh->retlist[gh->next].stat = stat;
1180 
1181 	gh->next++;
1182 	return (IDMAP_SUCCESS);
1183 
1184 errout:
1185 	if (mapping)
1186 		(void) memset(mapping, 0, sizeof (*mapping));
1187 	errno = idmap_stat2errno(retcode);
1188 	return (retcode);
1189 }
1190 
1191 
1192 /*
1193  * Given UID, get SID
1194  *
1195  * Input:
1196  * uid  - POSIX UID
1197  * flag - flag
1198  *
1199  * Output:
1200  * stat - status of the get request
1201  * sid  - SID prefix (if stat == 0)
1202  * rid  - rid
1203  *
1204  * Note: The output parameters will be set by idmap_get_mappings()
1205  */
1206 idmap_stat
1207 idmap_get_sidbyuid(idmap_get_handle_t *gh, uid_t uid, int flag,
1208 		char **sidprefix, idmap_rid_t *rid, idmap_stat *stat)
1209 {
1210 
1211 	idmap_retcode	retcode;
1212 	idmap_mapping	*mapping = NULL;
1213 
1214 	/* sanity checks */
1215 	if (gh == NULL)
1216 		return (IDMAP_ERR_ARG);
1217 	if (sidprefix == NULL)
1218 		return (IDMAP_ERR_ARG);
1219 
1220 	/* Extend the request array and the return list */
1221 	if ((retcode = _get_ids_extend_batch(gh)) != IDMAP_SUCCESS)
1222 		goto errout;
1223 
1224 	/* Setup the request */
1225 	mapping = &gh->batch.idmap_mapping_batch_val[gh->next];
1226 	mapping->flag = flag;
1227 	mapping->id1.idtype = IDMAP_UID;
1228 	mapping->id1.idmap_id_u.uid = uid;
1229 	mapping->id2.idtype = IDMAP_SID;
1230 
1231 	/* Setup pointers for the result */
1232 	gh->retlist[gh->next].idtype = IDMAP_SID;
1233 	gh->retlist[gh->next].sidprefix = sidprefix;
1234 	gh->retlist[gh->next].rid = rid;
1235 	gh->retlist[gh->next].stat = stat;
1236 
1237 	gh->next++;
1238 	return (IDMAP_SUCCESS);
1239 
1240 errout:
1241 	if (mapping)
1242 		(void) memset(mapping, 0, sizeof (*mapping));
1243 	errno = idmap_stat2errno(retcode);
1244 	return (retcode);
1245 }
1246 
1247 
1248 /*
1249  * Given GID, get SID
1250  *
1251  * Input:
1252  * gid  - POSIX GID
1253  * flag - flag
1254  *
1255  * Output:
1256  * stat       - status of the get request
1257  * sidprefix  - SID prefix (if stat == 0)
1258  * rid        - rid
1259  *
1260  * Note: The output parameters will be set by idmap_get_mappings()
1261  */
1262 idmap_stat
1263 idmap_get_sidbygid(idmap_get_handle_t *gh, gid_t gid, int flag,
1264 		char **sidprefix, idmap_rid_t *rid, idmap_stat *stat)
1265 {
1266 
1267 	idmap_retcode	retcode;
1268 	idmap_mapping	*mapping = NULL;
1269 
1270 	/* sanity checks */
1271 	if (gh == NULL)
1272 		return (IDMAP_ERR_ARG);
1273 	if (sidprefix == NULL)
1274 		return (IDMAP_ERR_ARG);
1275 
1276 	/* Extend the request array and the return list */
1277 	if ((retcode = _get_ids_extend_batch(gh)) != IDMAP_SUCCESS)
1278 		goto errout;
1279 
1280 	/* Setup the request */
1281 	mapping = &gh->batch.idmap_mapping_batch_val[gh->next];
1282 	mapping->flag = flag;
1283 	mapping->id1.idtype = IDMAP_GID;
1284 	mapping->id1.idmap_id_u.gid = gid;
1285 	mapping->id2.idtype = IDMAP_SID;
1286 
1287 	/* Setup pointers for the result */
1288 	gh->retlist[gh->next].idtype = IDMAP_SID;
1289 	gh->retlist[gh->next].sidprefix = sidprefix;
1290 	gh->retlist[gh->next].rid = rid;
1291 	gh->retlist[gh->next].stat = stat;
1292 
1293 	gh->next++;
1294 	return (IDMAP_SUCCESS);
1295 
1296 errout:
1297 	if (mapping)
1298 		(void) memset(mapping, 0, sizeof (*mapping));
1299 	errno = idmap_stat2errno(retcode);
1300 	return (retcode);
1301 }
1302 
1303 
1304 /*
1305  * Process the batched "get mapping" requests. The results (i.e.
1306  * status and identity) will be available in the data areas
1307  * provided by individual requests.
1308  */
1309 idmap_stat
1310 idmap_get_mappings(idmap_get_handle_t *gh)
1311 {
1312 	CLIENT		*clnt;
1313 	enum clnt_stat	clntstat;
1314 	idmap_retcode	retcode;
1315 	idmap_ids_res	res;
1316 	idmap_id	*id;
1317 	int		i;
1318 
1319 	if (gh == NULL) {
1320 		errno = EINVAL;
1321 		return (IDMAP_ERR_ARG);
1322 	}
1323 	_IDMAP_GET_CLIENT_HANDLE(gh->ih, clnt);
1324 
1325 	(void) memset(&res, 0, sizeof (idmap_ids_res));
1326 	clntstat = clnt_call(clnt, IDMAP_GET_MAPPED_IDS,
1327 	    (xdrproc_t)xdr_idmap_mapping_batch,
1328 	    (caddr_t)&gh->batch,
1329 	    (xdrproc_t)xdr_idmap_ids_res,
1330 	    (caddr_t)&res,
1331 	    TIMEOUT);
1332 	if (clntstat != RPC_SUCCESS) {
1333 		retcode = _idmap_rpc2stat(clnt);
1334 		goto out;
1335 	}
1336 	if (res.retcode != IDMAP_SUCCESS) {
1337 		retcode = res.retcode;
1338 		goto out;
1339 	}
1340 	for (i = 0; i < gh->next; i++) {
1341 		if (i >= res.ids.ids_len) {
1342 			*gh->retlist[i].stat = IDMAP_ERR_NORESULT;
1343 			continue;
1344 		}
1345 		*gh->retlist[i].stat = res.ids.ids_val[i].retcode;
1346 		id = &res.ids.ids_val[i].id;
1347 		switch (id->idtype) {
1348 		case IDMAP_UID:
1349 			if (gh->retlist[i].uid)
1350 				*gh->retlist[i].uid = id->idmap_id_u.uid;
1351 			if (gh->retlist[i].is_user)
1352 				*gh->retlist[i].is_user = 1;
1353 			break;
1354 		case IDMAP_GID:
1355 			if (gh->retlist[i].gid)
1356 				*gh->retlist[i].gid = id->idmap_id_u.gid;
1357 			if (gh->retlist[i].is_user)
1358 				*gh->retlist[i].is_user = 0;
1359 			break;
1360 		case IDMAP_POSIXID:
1361 			if (gh->retlist[i].uid)
1362 				*gh->retlist[i].uid = 60001;
1363 			if (gh->retlist[i].is_user)
1364 				*gh->retlist[i].is_user = -1;
1365 			break;
1366 		case IDMAP_SID:
1367 		case IDMAP_USID:
1368 		case IDMAP_GSID:
1369 			if (gh->retlist[i].rid)
1370 				*gh->retlist[i].rid = id->idmap_id_u.sid.rid;
1371 			if (gh->retlist[i].sidprefix) {
1372 				if (id->idmap_id_u.sid.prefix == NULL ||
1373 				    *id->idmap_id_u.sid.prefix == '\0') {
1374 					*gh->retlist[i].sidprefix = NULL;
1375 					break;
1376 				}
1377 				*gh->retlist[i].sidprefix =
1378 				    strdup(id->idmap_id_u.sid.prefix);
1379 				if (*gh->retlist[i].sidprefix == NULL)
1380 					*gh->retlist[i].stat =
1381 					    IDMAP_ERR_MEMORY;
1382 			}
1383 			break;
1384 		case IDMAP_NONE:
1385 			break;
1386 		default:
1387 			*gh->retlist[i].stat = IDMAP_ERR_NORESULT;
1388 			break;
1389 		}
1390 	}
1391 	retcode = IDMAP_SUCCESS;
1392 
1393 out:
1394 	_IDMAP_RESET_GET_HANDLE(gh);
1395 	(void) xdr_free(xdr_idmap_ids_res, (caddr_t)&res);
1396 	errno = idmap_stat2errno(retcode);
1397 	return (retcode);
1398 }
1399 
1400 
1401 /*
1402  * Destroy the "get mapping" handle
1403  */
1404 void
1405 idmap_get_destroy(idmap_get_handle_t *gh)
1406 {
1407 	if (gh == NULL)
1408 		return;
1409 	(void) xdr_free(xdr_idmap_mapping_batch, (caddr_t)&gh->batch);
1410 	if (gh->retlist)
1411 		free(gh->retlist);
1412 	free(gh);
1413 }
1414 
1415 
1416 /*
1417  * Get windows to unix mapping
1418  */
1419 idmap_stat
1420 idmap_get_w2u_mapping(idmap_handle_t *handle,
1421 		const char *sidprefix, idmap_rid_t *rid,
1422 		const char *winname, const char *windomain,
1423 		int flag, int *is_user, int *is_wuser,
1424 		uid_t *pid, char **unixname, int *direction)
1425 {
1426 	CLIENT			*clnt;
1427 	enum clnt_stat		clntstat;
1428 	idmap_mapping		request, *mapping;
1429 	idmap_mappings_res	result;
1430 	idmap_retcode		retcode, rc;
1431 
1432 	if (handle == NULL) {
1433 		errno = EINVAL;
1434 		return (IDMAP_ERR_ARG);
1435 	}
1436 
1437 	_IDMAP_GET_CLIENT_HANDLE(handle, clnt);
1438 
1439 	(void) memset(&request, 0, sizeof (request));
1440 	(void) memset(&result, 0, sizeof (result));
1441 
1442 	if (pid)
1443 		*pid = UINT32_MAX;
1444 	if (unixname)
1445 		*unixname = NULL;
1446 	if (direction)
1447 		*direction = IDMAP_DIRECTION_UNDEF;
1448 
1449 	request.flag = flag;
1450 	request.id1.idtype = IDMAP_SID;
1451 	if (sidprefix && rid) {
1452 		request.id1.idmap_id_u.sid.prefix = (char *)sidprefix;
1453 		request.id1.idmap_id_u.sid.rid = *rid;
1454 	} else if (winname) {
1455 		retcode = idmap_strdupnull(&request.id1name, winname);
1456 		if (retcode != IDMAP_SUCCESS)
1457 			goto out;
1458 
1459 		retcode = idmap_strdupnull(&request.id1domain, windomain);
1460 		if (retcode != IDMAP_SUCCESS)
1461 			goto out;
1462 
1463 		request.id1.idmap_id_u.sid.prefix = NULL;
1464 	} else {
1465 		errno = EINVAL;
1466 		return (IDMAP_ERR_ARG);
1467 	}
1468 
1469 	if (*is_user == 1)
1470 		request.id2.idtype = IDMAP_UID;
1471 	else if (*is_user == 0)
1472 		request.id2.idtype = IDMAP_GID;
1473 	else
1474 		request.id2.idtype = IDMAP_POSIXID;
1475 
1476 	if (*is_wuser == 1)
1477 		request.id1.idtype = IDMAP_USID;
1478 	else if (*is_wuser == 0)
1479 		request.id1.idtype = IDMAP_GSID;
1480 	else
1481 		request.id1.idtype = IDMAP_SID;
1482 
1483 	clntstat = clnt_call(clnt, IDMAP_GET_MAPPED_ID_BY_NAME,
1484 	    (xdrproc_t)xdr_idmap_mapping, (caddr_t)&request,
1485 	    (xdrproc_t)xdr_idmap_mappings_res, (caddr_t)&result,
1486 	    TIMEOUT);
1487 
1488 	if (clntstat != RPC_SUCCESS)
1489 		return (_idmap_rpc2stat(clnt));
1490 
1491 	retcode = result.retcode;
1492 
1493 	if ((mapping = result.mappings.mappings_val) == NULL) {
1494 		if (retcode == IDMAP_SUCCESS)
1495 			retcode = IDMAP_ERR_NORESULT;
1496 		goto out;
1497 	}
1498 
1499 	if (mapping->id2.idtype == IDMAP_UID) {
1500 		*is_user = 1;
1501 	} else if (mapping->id2.idtype == IDMAP_GID) {
1502 		*is_user = 0;
1503 	} else {
1504 		goto out;
1505 	}
1506 
1507 	if (mapping->id1.idtype == IDMAP_USID) {
1508 		*is_wuser = 1;
1509 	} else if (mapping->id1.idtype == IDMAP_GSID) {
1510 		*is_wuser = 0;
1511 	} else {
1512 		goto out;
1513 	}
1514 
1515 	if (direction)
1516 		*direction = mapping->direction;
1517 	if (pid)
1518 		*pid = mapping->id2.idmap_id_u.uid;
1519 
1520 	rc = idmap_strdupnull(unixname, mapping->id2name);
1521 	if (rc != IDMAP_SUCCESS)
1522 		retcode = rc;
1523 
1524 out:
1525 	xdr_free(xdr_idmap_mappings_res, (caddr_t)&result);
1526 	if (retcode != IDMAP_SUCCESS)
1527 		errno = idmap_stat2errno(retcode);
1528 	return (retcode);
1529 }
1530 
1531 
1532 /*
1533  * Get unix to windows mapping
1534  */
1535 idmap_stat
1536 idmap_get_u2w_mapping(idmap_handle_t *handle,
1537 		uid_t *pid, const char *unixname,
1538 		int flag, int is_user, int *is_wuser,
1539 		char **sidprefix, idmap_rid_t *rid,
1540 		char **winname, char **windomain,
1541 		int *direction)
1542 {
1543 	CLIENT			*clnt;
1544 	enum clnt_stat		clntstat;
1545 	idmap_mapping		request, *mapping;
1546 	idmap_mappings_res	result;
1547 	idmap_retcode		retcode, rc;
1548 
1549 	if (handle == NULL) {
1550 		errno = EINVAL;
1551 		return (IDMAP_ERR_ARG);
1552 	}
1553 
1554 	_IDMAP_GET_CLIENT_HANDLE(handle, clnt);
1555 
1556 	if (sidprefix)
1557 		*sidprefix = NULL;
1558 	if (winname)
1559 		*winname = NULL;
1560 	if (windomain)
1561 		*windomain = NULL;
1562 	if (rid)
1563 		*rid = UINT32_MAX;
1564 	if (direction)
1565 		*direction = IDMAP_DIRECTION_UNDEF;
1566 
1567 	(void) memset(&request, 0, sizeof (request));
1568 	(void) memset(&result, 0, sizeof (result));
1569 
1570 	request.flag = flag;
1571 	request.id1.idtype = is_user?IDMAP_UID:IDMAP_GID;
1572 
1573 	if (pid && *pid != UINT32_MAX) {
1574 		request.id1.idmap_id_u.uid = *pid;
1575 	} else if (unixname) {
1576 		request.id1name = (char *)unixname;
1577 		request.id1.idmap_id_u.uid = UINT32_MAX;
1578 	} else {
1579 		errno = EINVAL;
1580 		return (IDMAP_ERR_ARG);
1581 	}
1582 
1583 	if (is_wuser == NULL)
1584 		request.id2.idtype = IDMAP_SID;
1585 	else if (*is_wuser == -1)
1586 		request.id2.idtype = IDMAP_SID;
1587 	else if (*is_wuser == 0)
1588 		request.id2.idtype = IDMAP_GSID;
1589 	else if (*is_wuser == 1)
1590 		request.id2.idtype = IDMAP_USID;
1591 
1592 	clntstat = clnt_call(clnt, IDMAP_GET_MAPPED_ID_BY_NAME,
1593 	    (xdrproc_t)xdr_idmap_mapping, (caddr_t)&request,
1594 	    (xdrproc_t)xdr_idmap_mappings_res, (caddr_t)&result,
1595 	    TIMEOUT);
1596 
1597 	if (clntstat != RPC_SUCCESS)
1598 		return (_idmap_rpc2stat(clnt));
1599 
1600 	retcode = result.retcode;
1601 
1602 	if ((mapping = result.mappings.mappings_val) == NULL) {
1603 		if (retcode == IDMAP_SUCCESS)
1604 			retcode = IDMAP_ERR_NORESULT;
1605 		goto out;
1606 	}
1607 
1608 	if (direction != NULL)
1609 		*direction = mapping->direction;
1610 
1611 	if (is_wuser != NULL)
1612 		*is_wuser = mapping->id2.idtype == IDMAP_USID ? 1 : 0;
1613 
1614 	if (sidprefix && mapping->id2.idmap_id_u.sid.prefix &&
1615 	    *mapping->id2.idmap_id_u.sid.prefix != '\0') {
1616 		*sidprefix = strdup(mapping->id2.idmap_id_u.sid.prefix);
1617 		if (*sidprefix == NULL) {
1618 			retcode = IDMAP_ERR_MEMORY;
1619 			goto errout;
1620 		}
1621 	}
1622 	if (rid)
1623 		*rid = mapping->id2.idmap_id_u.sid.rid;
1624 
1625 	rc = idmap_strdupnull(winname, mapping->id2name);
1626 	if (rc != IDMAP_SUCCESS)
1627 		retcode = rc;
1628 
1629 	rc = idmap_strdupnull(windomain, mapping->id2domain);
1630 	if (rc != IDMAP_SUCCESS)
1631 		retcode = rc;
1632 
1633 	goto out;
1634 
1635 errout:
1636 	if (sidprefix && *sidprefix) {
1637 		free(*sidprefix);
1638 		*sidprefix = NULL;
1639 	}
1640 	if (winname && *winname) {
1641 		free(*winname);
1642 		*winname = NULL;
1643 	}
1644 	if (windomain && *windomain) {
1645 		free(*windomain);
1646 		*windomain = NULL;
1647 	}
1648 
1649 out:
1650 	xdr_free(xdr_idmap_mappings_res, (caddr_t)&result);
1651 	if (retcode != IDMAP_SUCCESS)
1652 		errno = idmap_stat2errno(retcode);
1653 	return (retcode);
1654 }
1655 
1656 
1657 
1658 #define	gettext(s)	s
1659 static stat_table_t stattable[] = {
1660 	{IDMAP_SUCCESS, gettext("Success"), 0},
1661 	{IDMAP_NEXT, gettext("More results available"), 0},
1662 	{IDMAP_ERR_OTHER, gettext("Undefined error"), EINVAL},
1663 	{IDMAP_ERR_INTERNAL, gettext("Internal error"), EINVAL},
1664 	{IDMAP_ERR_MEMORY, gettext("Out of memory"), ENOMEM},
1665 	{IDMAP_ERR_NORESULT, gettext("No results available"), EINVAL},
1666 	{IDMAP_ERR_NOTUSER, gettext("Not a user"), EINVAL},
1667 	{IDMAP_ERR_NOTGROUP, gettext("Not a group"), EINVAL},
1668 	{IDMAP_ERR_NOTSUPPORTED, gettext("Operation not supported"), ENOTSUP},
1669 	{IDMAP_ERR_W2U_NAMERULE,
1670 		gettext("Invalid Windows to UNIX name-based rule"), EINVAL},
1671 	{IDMAP_ERR_U2W_NAMERULE,
1672 		gettext("Invalid UNIX to Windows name-based rule"), EINVAL},
1673 	{IDMAP_ERR_CACHE, gettext("Invalid cache"), EINVAL},
1674 	{IDMAP_ERR_DB, gettext("Invalid database"), EINVAL},
1675 	{IDMAP_ERR_ARG, gettext("Invalid argument"), EINVAL},
1676 	{IDMAP_ERR_SID, gettext("Invalid SID"), EINVAL},
1677 	{IDMAP_ERR_IDTYPE, gettext("Invalid identity type"), EINVAL},
1678 	{IDMAP_ERR_RPC_HANDLE, gettext("Bad RPC handle"), EBADF},
1679 	{IDMAP_ERR_RPC, gettext("RPC error"), EINVAL},
1680 	{IDMAP_ERR_CLIENT_HANDLE, gettext("Bad client handle"), EINVAL},
1681 	{IDMAP_ERR_BUSY, gettext("Server is busy"), EBUSY},
1682 	{IDMAP_ERR_PERMISSION_DENIED, gettext("Permission denied"), EACCES},
1683 	{IDMAP_ERR_NOMAPPING,
1684 		gettext("Mapping not found or inhibited"), EINVAL},
1685 	{IDMAP_ERR_NEW_ID_ALLOC_REQD,
1686 		gettext("New mapping needs to be created"), EINVAL},
1687 	{IDMAP_ERR_DOMAIN, gettext("Invalid domain"), EINVAL},
1688 	{IDMAP_ERR_SECURITY, gettext("Security issue"), EINVAL},
1689 	{IDMAP_ERR_NOTFOUND, gettext("Not found"), EINVAL},
1690 	{IDMAP_ERR_DOMAIN_NOTFOUND, gettext("Domain not found"), EINVAL},
1691 	{IDMAP_ERR_UPDATE_NOTALLOWED, gettext("Update not allowed"), EINVAL},
1692 	{IDMAP_ERR_CFG, gettext("Configuration error"), EINVAL},
1693 	{IDMAP_ERR_CFG_CHANGE, gettext("Invalid configuration change"), EINVAL},
1694 	{IDMAP_ERR_NOTMAPPED_WELLKNOWN,
1695 		gettext("No mapping for well-known SID"), EINVAL},
1696 	{IDMAP_ERR_RETRIABLE_NET_ERR,
1697 		gettext("Windows lookup failed"), EINVAL},
1698 	{IDMAP_ERR_W2U_NAMERULE_CONFLICT,
1699 		gettext("Duplicate rule or conflicts with an existing "
1700 		"Windows to UNIX name-based rule"), EINVAL},
1701 	{IDMAP_ERR_U2W_NAMERULE_CONFLICT,
1702 		gettext("Duplicate rule or conflicts with an existing "
1703 		"Unix to Windows name-based rule"), EINVAL},
1704 	{-1, NULL, 0}
1705 };
1706 #undef	gettext
1707 
1708 
1709 /*
1710  * Get description of status code
1711  *
1712  * Input:
1713  * status - Status code returned by libidmap API call
1714  *
1715  * Return Value:
1716  * human-readable localized description of idmap_stat
1717  */
1718 /* ARGSUSED */
1719 const char *
1720 idmap_stat2string(idmap_handle_t *handle, idmap_stat status)
1721 {
1722 	int i;
1723 
1724 	for (i = 0; stattable[i].msg; i++) {
1725 		if (stattable[i].retcode == status)
1726 			return (gettext(stattable[i].msg));
1727 	}
1728 	return (gettext("Unknown error"));
1729 }
1730 
1731 
1732 static int
1733 idmap_stat2errno(idmap_stat stat)
1734 {
1735 	int i;
1736 	for (i = 0; stattable[i].msg; i++) {
1737 		if (stattable[i].retcode == stat)
1738 			return (stattable[i].errnum);
1739 	}
1740 	return (EINVAL);
1741 }
1742 
1743 
1744 /*
1745  * Get status code from string
1746  */
1747 idmap_stat
1748 idmap_string2stat(const char *str)
1749 {
1750 	if (str == NULL)
1751 		return (IDMAP_ERR_INTERNAL);
1752 
1753 #define	return_cmp(a) \
1754 	if (0 == strcmp(str, "IDMAP_ERR_" #a)) \
1755 		return (IDMAP_ERR_ ## a);
1756 
1757 	return_cmp(OTHER);
1758 	return_cmp(INTERNAL);
1759 	return_cmp(MEMORY);
1760 	return_cmp(NORESULT);
1761 	return_cmp(NOTUSER);
1762 	return_cmp(NOTGROUP);
1763 	return_cmp(NOTSUPPORTED);
1764 	return_cmp(W2U_NAMERULE);
1765 	return_cmp(U2W_NAMERULE);
1766 	return_cmp(CACHE);
1767 	return_cmp(DB);
1768 	return_cmp(ARG);
1769 	return_cmp(SID);
1770 	return_cmp(IDTYPE);
1771 	return_cmp(RPC_HANDLE);
1772 	return_cmp(RPC);
1773 	return_cmp(CLIENT_HANDLE);
1774 	return_cmp(BUSY);
1775 	return_cmp(PERMISSION_DENIED);
1776 	return_cmp(NOMAPPING);
1777 	return_cmp(NEW_ID_ALLOC_REQD);
1778 	return_cmp(DOMAIN);
1779 	return_cmp(SECURITY);
1780 	return_cmp(NOTFOUND);
1781 	return_cmp(DOMAIN_NOTFOUND);
1782 	return_cmp(MEMORY);
1783 	return_cmp(UPDATE_NOTALLOWED);
1784 	return_cmp(CFG);
1785 	return_cmp(CFG_CHANGE);
1786 	return_cmp(NOTMAPPED_WELLKNOWN);
1787 	return_cmp(RETRIABLE_NET_ERR);
1788 	return_cmp(W2U_NAMERULE_CONFLICT);
1789 	return_cmp(U2W_NAMERULE_CONFLICT);
1790 #undef return_cmp
1791 
1792 	return (IDMAP_ERR_OTHER);
1793 }
1794 
1795 
1796 /*
1797  * Map the given status to one that can be returned by the protocol
1798  */
1799 idmap_stat
1800 idmap_stat4prot(idmap_stat status)
1801 {
1802 	switch (status) {
1803 	case IDMAP_ERR_MEMORY:
1804 	case IDMAP_ERR_CACHE:
1805 		return (IDMAP_ERR_INTERNAL);
1806 	}
1807 	return (status);
1808 }
1809 
1810 
1811 /*
1812  * This is a convenience routine which duplicates a string after
1813  * checking for NULL pointers. This function will return success if
1814  * either the 'to' OR 'from' pointers are NULL.
1815  */
1816 static idmap_stat
1817 idmap_strdupnull(char **to, const char *from)
1818 {
1819 	if (to == NULL)
1820 		return (IDMAP_SUCCESS);
1821 
1822 	if (from == NULL || *from == '\0') {
1823 		*to = NULL;
1824 		return (IDMAP_SUCCESS);
1825 	}
1826 
1827 	*to = strdup(from);
1828 	if (*to == NULL)
1829 		return (IDMAP_ERR_MEMORY);
1830 	return (IDMAP_SUCCESS);
1831 }
1832 
1833 idmap_stat
1834 idmap_namerule_cpy(idmap_namerule *to, idmap_namerule *from)
1835 {
1836 	idmap_stat retval;
1837 
1838 	(void) memcpy(to, from, sizeof (idmap_namerule));
1839 
1840 	retval = idmap_strdupnull(&to->windomain, from->windomain);
1841 	if (retval != IDMAP_SUCCESS)
1842 		return (retval);
1843 
1844 	retval = idmap_strdupnull(&to->winname, from->winname);
1845 	if (retval != IDMAP_SUCCESS)
1846 		return (retval);
1847 
1848 	retval = idmap_strdupnull(&to->unixname, from->unixname);
1849 
1850 	return (retval);
1851 }
1852 
1853 
1854 /*
1855  * Get uid given Windows name
1856  */
1857 idmap_stat
1858 idmap_getuidbywinname(const char *name, const char *domain, uid_t *uid)
1859 {
1860 	idmap_handle_t	*ih;
1861 	idmap_retcode	rc;
1862 	int		is_user = 1;
1863 	int		is_wuser = -1;
1864 
1865 	if (uid == NULL)
1866 		return (IDMAP_ERR_ARG);
1867 
1868 	/* Get mapping */
1869 	if ((rc = idmap_init(&ih)) != IDMAP_SUCCESS)
1870 		return (rc);
1871 	rc = idmap_get_w2u_mapping(ih, NULL, NULL, name, domain, 0,
1872 	    &is_user, &is_wuser, uid, NULL, NULL);
1873 	(void) idmap_fini(ih);
1874 
1875 	/*
1876 	 * XXX Until we have diagonal mapping support, check if
1877 	 * the given name belongs to a user
1878 	 */
1879 	if (rc == IDMAP_SUCCESS && !is_user)
1880 		return (IDMAP_ERR_NOTUSER);
1881 	return (rc);
1882 }
1883 
1884 
1885 /*
1886  * Get gid given Windows name
1887  */
1888 idmap_stat
1889 idmap_getgidbywinname(const char *name, const char *domain, gid_t *gid)
1890 {
1891 	idmap_handle_t	*ih;
1892 	idmap_retcode	rc;
1893 	int		is_user = 0;
1894 	int		is_wuser = -1;
1895 
1896 	if (gid == NULL)
1897 		return (IDMAP_ERR_ARG);
1898 
1899 	/* Get mapping */
1900 	if ((rc = idmap_init(&ih)) != IDMAP_SUCCESS)
1901 		return (rc);
1902 	rc = idmap_get_w2u_mapping(ih, NULL, NULL, name, domain, 0,
1903 	    &is_user, &is_wuser, gid, NULL, NULL);
1904 	(void) idmap_fini(ih);
1905 
1906 	/*
1907 	 * XXX Until we have diagonal mapping support, check if
1908 	 * the given name belongs to a group
1909 	 */
1910 	if (rc == IDMAP_SUCCESS && is_user)
1911 		return (IDMAP_ERR_NOTGROUP);
1912 	return (rc);
1913 }
1914 
1915 
1916 /*
1917  * Get winname given pid
1918  */
1919 static idmap_retcode
1920 idmap_getwinnamebypid(uid_t pid, int is_user, char **name, char **domain)
1921 {
1922 	idmap_handle_t	*ih;
1923 	idmap_retcode	rc;
1924 	int		len;
1925 	char		*winname, *windomain;
1926 
1927 	if (name == NULL)
1928 		return (IDMAP_ERR_ARG);
1929 
1930 	/* Get mapping */
1931 	if ((rc = idmap_init(&ih)) != IDMAP_SUCCESS)
1932 		return (rc);
1933 	rc = idmap_get_u2w_mapping(ih, &pid, NULL, 0, is_user, NULL, NULL,
1934 	    NULL, &winname, &windomain, NULL);
1935 	(void) idmap_fini(ih);
1936 
1937 	/* Return on error */
1938 	if (rc != IDMAP_SUCCESS)
1939 		return (rc);
1940 
1941 	/*
1942 	 * The given PID may have been mapped to a locally
1943 	 * generated SID in which case there isn't any
1944 	 * Windows name
1945 	 */
1946 	if (winname == NULL || windomain == NULL) {
1947 		idmap_free(winname);
1948 		idmap_free(windomain);
1949 		return (IDMAP_ERR_NORESULT);
1950 	}
1951 
1952 	if (domain != NULL) {
1953 		*name = winname;
1954 		*domain = windomain;
1955 	} else {
1956 		len = strlen(winname) + strlen(windomain) + 2;
1957 		if ((*name = malloc(len)) != NULL)
1958 			(void) snprintf(*name, len, "%s@%s", winname,
1959 			    windomain);
1960 		else
1961 			rc = IDMAP_ERR_MEMORY;
1962 		idmap_free(winname);
1963 		idmap_free(windomain);
1964 	}
1965 	return (rc);
1966 }
1967 
1968 
1969 /*
1970  * Get winname given uid
1971  */
1972 idmap_stat
1973 idmap_getwinnamebyuid(uid_t uid, char **name, char **domain)
1974 {
1975 	return (idmap_getwinnamebypid(uid, 1, name, domain));
1976 }
1977 
1978 
1979 /*
1980  * Get winname given gid
1981  */
1982 idmap_stat
1983 idmap_getwinnamebygid(gid_t gid, char **name, char **domain)
1984 {
1985 	return (idmap_getwinnamebypid(gid, 0, name, domain));
1986 }
1987