summaryrefslogtreecommitdiffstats
path: root/src/providers/ldap/sdap_sudo.c
blob: 24425834a2a0dba4eab3cc1985a311c54e46ccf0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
/*
    Authors:
        Pavel Březina <pbrezina@redhat.com>

    Copyright (C) 2011 Red Hat

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#include <errno.h>
#include <string.h>
#include <tevent.h>

#include "providers/dp_backend.h"
#include "providers/ldap/ldap_common.h"
#include "providers/ldap/sdap.h"
#include "providers/ldap/sdap_async.h"
#include "providers/ldap/sdap_sudo.h"
#include "providers/ldap/sdap_sudo_cache.h"
#include "providers/ldap/sdap_sudo_timer.h"
#include "db/sysdb_sudo.h"

static void
sdap_sudo_shutdown(struct be_req *req)
{
    sdap_handler_done(req, DP_ERR_OK, EOK, NULL);
}

struct bet_ops sdap_sudo_ops = {
    .handler = sdap_sudo_handler,
    .finalize = sdap_sudo_shutdown
};

int sdap_sudo_setup_tasks(struct sdap_id_ctx *id_ctx);

int sdap_sudo_init(struct be_ctx *be_ctx,
                   struct sdap_id_ctx *id_ctx,
                   struct bet_ops **ops,
                   void **pvt_data)
{
#ifdef BUILD_SUDO
    int ret;

    DEBUG(SSSDBG_TRACE_INTERNAL, ("Initializing sudo LDAP back end\n"));

    *ops = &sdap_sudo_ops;
    *pvt_data = id_ctx;

    ret = ldap_get_sudo_options(id_ctx, be_ctx->cdb,
                                be_ctx->conf_path, id_ctx->opts);
    if (ret != EOK) {
        DEBUG(SSSDBG_OP_FAILURE, ("Cannot get SUDO options [%d]: %s\n",
                                  ret, strerror(ret)));
        return ret;
    }

    ret = sdap_sudo_setup_tasks(id_ctx);
    if (ret != EOK) {
        DEBUG(SSSDBG_OP_FAILURE, ("SUDO setup failed [%d]: %s\n",
                                  ret, strerror(ret)));
        return ret;
    }

    return EOK;
#else
    DEBUG(SSSDBG_MINOR_FAILURE, ("Sudo init handler called but SSSD is "
                                 "built without sudo support, ignoring\n"));
    return EOK;
#endif
}

int sdap_sudo_setup_tasks(struct sdap_id_ctx *id_ctx)
{
    struct sdap_sudo_refresh_ctx *refresh_ctx = NULL;
    struct timeval tv;
    int ret = EOK;
    bool refreshed = false;
    bool refresh_enabled = dp_opt_get_bool(id_ctx->opts->basic,
                                           SDAP_SUDO_REFRESH_ENABLED);

    /* set up periodical update of sudo rules */
    if (refresh_enabled) {
        refresh_ctx = sdap_sudo_refresh_ctx_init(id_ctx, id_ctx->be, id_ctx,
                                                 id_ctx->opts,
                                                 tevent_timeval_zero());
        if (refresh_ctx == NULL) {
            DEBUG(SSSDBG_CRIT_FAILURE,
                  ("sdap_sudo_refresh_ctx_init() failed!\n"));
            return ENOMEM;
        }

        /* If this is the first startup, we need to kick off
         * an refresh immediately, to close a window where
         * clients requesting sudo information won't get an
         * immediate reply with no entries
         */
        ret = sysdb_sudo_get_refreshed(id_ctx->be->sysdb, &refreshed);
        if (ret != EOK) {
            return ret;
        }
        if (refreshed) {
            /* At least one update has previously run,
             * so clients will get cached data. We will delay
             * starting to enumerate by 10s so we don't slow
             * down the startup process if this is happening
             * during system boot.
             */
            tv = tevent_timeval_current_ofs(10, 0);
            DEBUG(SSSDBG_FUNC_DATA, ("Delaying first refresh of SUDO rules "
                  "for 10 seconds\n"));
        } else {
            /* This is our first startup. Schedule the
             * update to start immediately once we
             * enter the mainloop.
             */
            tv = tevent_timeval_current();
        }

        ret = sdap_sudo_refresh_set_timer(refresh_ctx, tv);
        if (ret != EOK) {
            talloc_free(refresh_ctx);
            return ret;
        }
    }

    return EOK;
}

struct sdap_sudo_load_sudoers_state {
    struct tevent_context *ev;
    struct sdap_sudo_ctx *sudo_ctx;
    struct sdap_options *opts;
    struct sdap_handle *sh;
    struct sysdb_attrs **ldap_rules; /* search result will be stored here */
    size_t ldap_rules_count; /* search result will be stored here */

    const char **attrs;
    const char *filter;
    size_t base_iter;
    struct sdap_search_base **search_bases;
    int timeout;
};

struct sdap_sudo_refresh_state {
    struct be_ctx *be_ctx;
    struct be_sudo_req *sudo_req;
    struct sdap_options *opts;
    struct sdap_id_op *sdap_op;
    struct sdap_id_conn_cache *sdap_conn_cache;

    int dp_error;
    int error;
};

static int sdap_sudo_connect(struct tevent_req *req);

static void sdap_sudo_connect_done(struct tevent_req *subreq);

static struct tevent_req * sdap_sudo_load_sudoers_send(TALLOC_CTX *mem_ctx,
                                                       struct tevent_context *ev,
                                                       struct be_sudo_req *sudo_req,
                                                       struct sdap_options *opts,
                                                       struct sdap_handle *sh);

static errno_t sdap_sudo_load_sudoers_next_base(struct tevent_req *req);

static void sdap_sudo_load_sudoers_process(struct tevent_req *subreq);

static int sdap_sudo_load_sudoers_recv(struct tevent_req *req,
                                       TALLOC_CTX *mem_ctx,
                                       size_t *rules_count,
                                       struct sysdb_attrs ***rules);

static void sdap_sudo_load_sudoers_done(struct tevent_req *req);

static int sdap_sudo_purge_sudoers(struct sysdb_ctx *sysdb_ctx,
                                   struct sss_domain_info *domain,
                                   struct be_sudo_req *sudo_req);

static int sdap_sudo_store_sudoers(struct sysdb_ctx *sysdb_ctx,
                                   struct sdap_options *opts,
                                   size_t rules_count,
                                   struct sysdb_attrs **rules);

static const char *sdap_sudo_build_filter(TALLOC_CTX *mem_ctx,
                                          struct sdap_attr_map *map,
                                          struct be_sudo_req *sudo_req);

static const char *sdap_sudo_build_user_filter(TALLOC_CTX *mem_ctx,
                                               struct sdap_attr_map *map,
                                               const char *username,
                                               uid_t uid,
                                               char **groups);

static void sdap_sudo_reply(struct tevent_req *req)
{
    struct be_req *be_req = NULL;
    int dp_error;
    int error;
    int ret;

    be_req = tevent_req_callback_data(req, struct be_req);
    ret = sdap_sudo_refresh_recv(req, &dp_error, &error);
    talloc_zfree(req);
    if (ret != EOK) {
        sdap_handler_done(be_req, DP_ERR_FATAL, ret, strerror(ret));
        return;
    }

    sdap_handler_done(be_req, dp_error, error, strerror(error));
}

void sdap_sudo_handler(struct be_req *be_req)
{
    struct tevent_req *req = NULL;
    struct be_sudo_req *sudo_req = NULL;
    struct sdap_id_ctx *id_ctx = NULL;
    int ret = EOK;

    id_ctx = talloc_get_type(be_req->be_ctx->bet_info[BET_SUDO].pvt_bet_data,
                             struct sdap_id_ctx);

    sudo_req = talloc_get_type(be_req->req_data, struct be_sudo_req);

    /* get user info */
    if (sudo_req->username != NULL) {
        ret = sysdb_get_sudo_user_info(sudo_req, sudo_req->username,
                                       id_ctx->be->sysdb,
                                       &sudo_req->uid, &sudo_req->groups);
        if (ret != EOK) {
            DEBUG(SSSDBG_CRIT_FAILURE, ("Unable to get uid and groups of %s\n",
                  sudo_req->username));
            goto fail;
        }
    } else {
        sudo_req->uid = 0;
        sudo_req->groups = NULL;
    }

    req = sdap_sudo_refresh_send(be_req, id_ctx->be, sudo_req, id_ctx->opts,
                                 id_ctx->conn_cache);
    if (req == NULL) {
        ret = ENOMEM;
        goto fail;
    }

    tevent_req_set_callback(req, sdap_sudo_reply, be_req);

    return;

fail:
    sdap_handler_done(be_req, DP_ERR_FATAL, ret, NULL);
}

struct tevent_req *sdap_sudo_refresh_send(TALLOC_CTX *mem_ctx,
                                          struct be_ctx *be_ctx,
                                          struct be_sudo_req *sudo_req,
                                          struct sdap_options *opts,
                                          struct sdap_id_conn_cache *conn_cache)
{
    struct tevent_req *req = NULL;
    struct sdap_sudo_refresh_state *state = NULL;
    int ret;

    req = tevent_req_create(mem_ctx, &state, struct sdap_sudo_refresh_state);
    if (!req) {
        return NULL;
    }

    state->be_ctx = be_ctx;
    state->sudo_req = sudo_req;
    state->opts = opts;
    state->sdap_op = NULL;
    state->sdap_conn_cache = conn_cache;
    state->dp_error = DP_ERR_OK;
    state->error = EOK;

    switch (sudo_req->type) {
    case BE_REQ_SUDO_ALL:
        DEBUG(SSSDBG_TRACE_FUNC, ("Requested refresh for: <ALL>\n"));
        break;
    case BE_REQ_SUDO_DEFAULTS:
        DEBUG(SSSDBG_TRACE_FUNC, ("Requested refresh of cn=defaults\n"));
        break;
    case BE_REQ_SUDO_USER:
        DEBUG(SSSDBG_TRACE_FUNC, ("Requested refresh for: %s\n",
                                  sudo_req->username));
        break;
    default:
        DEBUG(SSSDBG_CRIT_FAILURE, ("Invalid request type %d\n", sudo_req->type));
        ret = EINVAL;
        goto immediately;
    }

    ret = sdap_sudo_connect(req);
    if (ret == EAGAIN) {
        /* asynchronous processing */
        return req;
    }

immediately:
    if (ret == EOK) {
        tevent_req_done(req);
    } else {
        tevent_req_error(req, ret);
    }
    tevent_req_post(req, be_ctx->ev);

    return req;
}

int sdap_sudo_refresh_recv(struct tevent_req *req,
                           int *dp_error,
                           int *error)
{
    struct sdap_sudo_refresh_state *state = NULL;

    state = tevent_req_data(req, struct sdap_sudo_refresh_state);

    TEVENT_REQ_RETURN_ON_ERROR(req);

    *dp_error = state->dp_error;
    *error = state->error;

    return EOK;
}

int sdap_sudo_connect(struct tevent_req *req)
{
    struct tevent_req *subreq = NULL;
    struct sdap_sudo_refresh_state *state = NULL;
    int ret;

    state = tevent_req_data(req, struct sdap_sudo_refresh_state);

    if (be_is_offline(state->be_ctx)) {
        state->dp_error = DP_ERR_OFFLINE;
        state->error = EAGAIN;
        return EOK;
    }

    if (state->sdap_op == NULL) {
        state->sdap_op = sdap_id_op_create(state, state->sdap_conn_cache);
        if (state->sdap_op == NULL) {
            DEBUG(SSSDBG_CRIT_FAILURE, ("sdap_id_op_create() failed\n"));
            state->dp_error = DP_ERR_FATAL;
            state->error = EIO;
            return EIO;
        }
    }

    subreq = sdap_id_op_connect_send(state->sdap_op, state, &ret);
    if (subreq == NULL) {
        DEBUG(SSSDBG_CRIT_FAILURE,
              ("sdap_id_op_connect_send() failed: %d(%s)\n", ret, strerror(ret)));
        talloc_zfree(state->sdap_op);
        state->dp_error = DP_ERR_FATAL;
        state->error = ret;
        return ret;
    }

    tevent_req_set_callback(subreq, sdap_sudo_connect_done, req);

    return EAGAIN;
}

void sdap_sudo_connect_done(struct tevent_req *subreq)
{
    struct tevent_req *req = NULL; /* req from sdap_sudo_refresh_send() */
    struct sdap_sudo_refresh_state *state = NULL;
    int dp_error;
    int ret;

    req = tevent_req_callback_data(subreq, struct tevent_req);
    state = tevent_req_data(req, struct sdap_sudo_refresh_state);

    ret = sdap_id_op_connect_recv(subreq, &dp_error);
    talloc_zfree(subreq);

    if (dp_error == DP_ERR_OFFLINE) {
        talloc_zfree(state->sdap_op);
        state->dp_error = DP_ERR_OFFLINE;
        state->error = EAGAIN;
        tevent_req_done(req);
        return;
    } else if (ret != EOK) {
        DEBUG(SSSDBG_CRIT_FAILURE,
              ("SUDO LDAP connection failed - %s\n", strerror(ret)));
        goto fail;
    }

    DEBUG(SSSDBG_TRACE_FUNC, ("SUDO LDAP connection successful\n"));

    subreq = sdap_sudo_load_sudoers_send(state, state->be_ctx->ev,
                                         state->sudo_req, state->opts,
                                         sdap_id_op_handle(state->sdap_op));
    if (subreq == NULL) {
        ret = EFAULT;
        goto fail;
    }

    tevent_req_set_callback(subreq, sdap_sudo_load_sudoers_done, req);

    return;

fail:
    state->dp_error = DP_ERR_FATAL;
    state->error = ret;
    tevent_req_error(req, ret);
}

struct tevent_req * sdap_sudo_load_sudoers_send(TALLOC_CTX *mem_ctx,
                                                struct tevent_context *ev,
                                                struct be_sudo_req *sudo_req,
                                                struct sdap_options *opts,
                                                struct sdap_handle *sh)



{
    struct tevent_req *req = NULL;
    struct sdap_sudo_load_sudoers_state *state = NULL;
    int ret;

    req = tevent_req_create(mem_ctx, &state, struct sdap_sudo_load_sudoers_state);
    if (!req) {
        return NULL;
    }

    state->ev = ev;
    state->opts = opts;
    state->sh = sh;
    state->base_iter = 0;
    state->search_bases = opts->sudo_search_bases;
    state->timeout = dp_opt_get_int(opts->basic, SDAP_SEARCH_TIMEOUT);
    state->ldap_rules = NULL;
    state->ldap_rules_count = 0;

    if (!state->search_bases) {
        DEBUG(SSSDBG_CRIT_FAILURE,
              ("SUDOERS lookup request without a search base\n"));
        ret = EINVAL;
        goto done;
    }

    /* create filter */
    state->filter = sdap_sudo_build_filter(state, opts->sudorule_map, sudo_req);
    if (state->filter == NULL) {
        goto fail;
    }

    /* create attrs from map */
    ret = build_attrs_from_map(state, opts->sudorule_map, SDAP_OPTS_SUDO,
                               &state->attrs);
    if (ret != EOK) {
        goto fail;
    }

    /* begin search */
    ret = sdap_sudo_load_sudoers_next_base(req);

done:
    if (ret != EOK) {
        tevent_req_error(req, ret);
        tevent_req_post(req, ev);
    }

    return req;

fail:
    talloc_zfree(req);
    return NULL;
}

static errno_t sdap_sudo_load_sudoers_next_base(struct tevent_req *req)
{
    struct tevent_req *subreq = NULL;
    struct sdap_sudo_load_sudoers_state *state = NULL;
    struct sdap_search_base *search_base = NULL;
    char *filter = NULL;

    state = tevent_req_data(req, struct sdap_sudo_load_sudoers_state);
    search_base = state->search_bases[state->base_iter];
    if (search_base == NULL) {
        /* should not happen */
        DEBUG(SSSDBG_CRIT_FAILURE, ("search_base is null\n"));
        return EFAULT;
    }

    /* create filter */
    filter = sdap_get_id_specific_filter(state, state->filter,
                                         search_base->filter);
    if (filter == NULL) {
        return ENOMEM;
    }

    /* send request */
    DEBUG(SSSDBG_TRACE_FUNC,
          ("Searching for sudo rules with base [%s]\n",
           search_base->basedn));

    subreq = sdap_get_generic_send(state,
                                   state->ev,
                                   state->opts,
                                   state->sh,
                                   search_base->basedn,
                                   search_base->scope,
                                   filter,
                                   state->attrs,
                                   state->opts->sudorule_map,
                                   SDAP_OPTS_SUDO,
                                   state->timeout);
    if (subreq == NULL) {
        return ENOMEM;
    }

    tevent_req_set_callback(subreq, sdap_sudo_load_sudoers_process, req);

    return EOK;
}

static void sdap_sudo_load_sudoers_process(struct tevent_req *subreq)
{
    struct tevent_req *req = NULL;
    struct sdap_sudo_load_sudoers_state *state = NULL;
    struct sdap_search_base *search_base = NULL;
    struct sysdb_attrs **attrs = NULL;
    size_t count;
    int ret;
    int i;

    req = tevent_req_callback_data(subreq, struct tevent_req);
    state = tevent_req_data(req, struct sdap_sudo_load_sudoers_state);
    search_base = state->search_bases[state->base_iter];

    DEBUG(SSSDBG_TRACE_FUNC,
          ("Receiving sudo rules with base [%s]\n",
           search_base->basedn));

    ret = sdap_get_generic_recv(subreq, state, &count, &attrs);
    talloc_zfree(subreq);
    if (ret) {
        tevent_req_error(req, ret);
        return;
    }

    /* add rules to result */
    if (count > 0) {
        state->ldap_rules = talloc_realloc(state, state->ldap_rules,
                                           struct sysdb_attrs *,
                                           state->ldap_rules_count + count);
        if (state->ldap_rules == NULL) {
            tevent_req_error(req, ENOMEM);
            return;
        }

        for (i = 0; i < count; i++) {
            state->ldap_rules[state->ldap_rules_count + i] = talloc_steal(
                                                   state->ldap_rules, attrs[i]);
        }

        state->ldap_rules_count += count;
    }

    /* go to next base */
    state->base_iter++;
    if (state->search_bases[state->base_iter]) {
        ret = sdap_sudo_load_sudoers_next_base(req);
        if (ret != EOK) {
            tevent_req_error(req, ret);
        }

        return;
    }

    /* we are done */
    tevent_req_done(req);
}

int sdap_sudo_load_sudoers_recv(struct tevent_req *req,
                                TALLOC_CTX *mem_ctx,
                                size_t *rules_count,
                                struct sysdb_attrs ***rules)
{
    struct sdap_sudo_load_sudoers_state *state = NULL;

    state = tevent_req_data(req, struct sdap_sudo_load_sudoers_state);

    TEVENT_REQ_RETURN_ON_ERROR(req);

    *rules_count = state->ldap_rules_count;
    *rules = talloc_steal(mem_ctx, state->ldap_rules);

    return EOK;
}

void sdap_sudo_load_sudoers_done(struct tevent_req *subreq)
{
    struct tevent_req *req = NULL; /* req from sdap_sudo_refresh_send() */
    struct sdap_sudo_refresh_state *state = NULL;
    struct sysdb_attrs **rules = NULL;
    size_t rules_count;
    int ret;

    req = tevent_req_callback_data(subreq, struct tevent_req);
    state = tevent_req_data(req, struct sdap_sudo_refresh_state);

    ret = sdap_sudo_load_sudoers_recv(subreq, state, &rules_count, &rules);
    talloc_zfree(subreq);
    if (ret != EOK) {
        goto done;
    }

    DEBUG(SSSDBG_TRACE_FUNC, ("Received %d rules\n", rules_count));

    /* purge cache */
    ret = sdap_sudo_purge_sudoers(state->be_ctx->sysdb, state->be_ctx->domain,
                                  state->sudo_req);
    if (ret != EOK) {
        goto done;
    }

    /* store rules */
    ret = sdap_sudo_store_sudoers(state->be_ctx->sysdb, state->opts,
                                  rules_count, rules);
    if (ret != EOK) {
        goto done;
    }

    DEBUG(SSSDBG_TRACE_FUNC, ("Sudoers is successfuly stored in cache\n"));

    ret = EOK;

done:
    state->error = ret;
    if (ret == EOK) {
        state->dp_error = DP_ERR_OK;
        tevent_req_done(req);
    } else {
        state->dp_error = DP_ERR_FATAL;
        tevent_req_error(req, ret);
    }
}

int sdap_sudo_purge_sudoers(struct sysdb_ctx *sysdb_ctx,
                            struct sss_domain_info *domain,
                            struct be_sudo_req *sudo_req)
{
    TALLOC_CTX *tmp_ctx;
    char *filter = NULL;
    int ret = EOK;

    tmp_ctx = talloc_new(NULL);
    if (tmp_ctx == NULL) {
        DEBUG(SSSDBG_CRIT_FAILURE, ("talloc_new() failed\n"));
        return ENOMEM;
    }

    switch (sudo_req->type) {
    case BE_REQ_SUDO_ALL:
        filter = NULL;
        break;
    case BE_REQ_SUDO_DEFAULTS:
        ret = sysdb_get_sudo_filter(tmp_ctx, NULL, 0, NULL,
                                    SYSDB_SUDO_FILTER_INCLUDE_DFL, &filter);
        break;
    case BE_REQ_SUDO_USER:
        ret = sysdb_get_sudo_filter(tmp_ctx, sudo_req->username, sudo_req->uid,
                                    sudo_req->groups,
                                      SYSDB_SUDO_FILTER_USERINFO
                                    | SYSDB_SUDO_FILTER_INCLUDE_ALL
                                    | SYSDB_SUDO_FILTER_INCLUDE_DFL, &filter);
        break;
    default:
        DEBUG(SSSDBG_CRIT_FAILURE, ("Invalid request type %d\n", sudo_req->type));
        return EINVAL;
    }

    if (ret != EOK) {
        DEBUG(SSSDBG_CRIT_FAILURE, ("Unable to create filter to purge "
              "sudoers cache [%d]: %s\n", ret, strerror(ret)));
        goto done;
    }

    /* Purge rules */
    DEBUG(SSSDBG_TRACE_FUNC, ("Purging sudo cache with filter [%s]\n", filter));
    ret = sysdb_purge_sudorule_subtree(sysdb_ctx, domain, filter);
    if (ret != EOK) {
        DEBUG(SSSDBG_CRIT_FAILURE, ("Unable to purge sudoers cache [%d]: %s\n",
                                    ret, strerror(ret)));
        goto done;
    }

    ret = EOK;

done:
    talloc_free(tmp_ctx);
    return ret;
}

int sdap_sudo_store_sudoers(struct sysdb_ctx *sysdb_ctx,
                            struct sdap_options *opts,
                            size_t rules_count,
                            struct sysdb_attrs **rules)
{
    errno_t ret;

    /* Empty sudoers? Done. */
    if (rules_count == 0 || rules == NULL) {
        return EOK;
    }

    ret = sdap_save_native_sudorule_list(sysdb_ctx, opts->sudorule_map,
                                         rules, rules_count);
    if (ret != EOK) {
        DEBUG(SSSDBG_OP_FAILURE, ("failed to save sudo rules [%d]: %s\n",
              ret, strerror(ret)));
        return ret;
    }

    return EOK;
}

const char *sdap_sudo_build_filter(TALLOC_CTX *mem_ctx,
                                   struct sdap_attr_map *map,
                                   struct be_sudo_req *sudo_req)
{
    switch (sudo_req->type) {
    case BE_REQ_SUDO_ALL:
        return talloc_asprintf(mem_ctx, SDAP_SUDO_FILTER_ALL,
                               map[SDAP_OC_SUDORULE].name);
        break;
    case BE_REQ_SUDO_DEFAULTS:
        return talloc_asprintf(mem_ctx, SDAP_SUDO_FILTER_DEFAULTS,
                               map[SDAP_OC_SUDORULE].name,
                               map[SDAP_AT_SUDO_NAME].name,
                               SDAP_SUDO_DEFAULTS); /* FIXME: add option for this */
        break;
    case BE_REQ_SUDO_USER:
        return sdap_sudo_build_user_filter(mem_ctx, map, sudo_req->username,
                                           sudo_req->uid, sudo_req->groups);

        break;
    default:
        DEBUG(SSSDBG_CRIT_FAILURE, ("Invalid request type %d\n", sudo_req->type));
        return NULL;
    }
}

/* alway update cn=defaults and sudoUser=ALL */
const char *sdap_sudo_build_user_filter(TALLOC_CTX *mem_ctx,
                                        struct sdap_attr_map *map,
                                        const char *username,
                                        uid_t uid,
                                        char **groups)
{
    char *filter = NULL;
    char *output = NULL;
    char *sanitized = NULL;
    char **group = NULL;
    int ret;

    /* user name */
    ret = sss_filter_sanitize(filter, username, &sanitized);
    if (ret != EOK) {
        goto fail;
    }
    filter = talloc_asprintf_append(filter, SDAP_SUDO_FILTER_USERNAME,
                                    map[SDAP_AT_SUDO_USER].name,
                                    sanitized);
    if (filter == NULL) {
        goto fail;
    }

    /* user uid */
    filter = talloc_asprintf_append(filter, SDAP_SUDO_FILTER_UID,
                                    map[SDAP_AT_SUDO_USER].name,
                                    uid);
    if (filter == NULL) {
        goto fail;
    }

    /* groups */
    if (groups != NULL) {
        for (group = groups; *group != NULL; group++) {
            ret = sss_filter_sanitize(filter, *group, &sanitized);
            if (ret != EOK) {
                goto fail;
            }
            filter = talloc_asprintf_append(filter, SDAP_SUDO_FILTER_GROUP,
                                            map[SDAP_AT_SUDO_USER].name,
                                            sanitized);
            if (filter == NULL) {
                goto fail;
            }
        }
    }

    /* netgroups */
    /*
     * FIXME: load only netgroups user is member of
     * FIXME: add option to disable this filter
     */
    filter = talloc_asprintf_append(filter, SDAP_SUDO_FILTER_NETGROUP,
                                    map[SDAP_AT_SUDO_USER].name,
                                    "*");
    if (filter == NULL) {
        goto fail;
    }


    output = talloc_asprintf(mem_ctx, SDAP_SUDO_FILTER_USER,
                             map[SDAP_OC_SUDORULE].name,
                             map[SDAP_AT_SUDO_NAME].name,
                             SDAP_SUDO_DEFAULTS, /* FIXME: add option for this */
                             map[SDAP_AT_SUDO_USER].name,
                             filter);

    talloc_free(filter);
    return output;

fail:
    talloc_free(filter);
    return NULL;
}