summaryrefslogtreecommitdiff
path: root/src/responder/pac/pacsrv_cmd.c
blob: 3c053a7c3d4cba78fe8f299ec4f71064725a4912 (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
/*
   SSSD

   PAC Responder

   Copyright (C) Sumit Bose <sbose@redhat.com> 2012
                 Jan Zeleny <jzeleny@redhat.com> 2012

   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 "util/util.h"
#include "responder/pac/pacsrv.h"
#include "confdb/confdb.h"

static errno_t pac_cmd_done(struct cli_ctx *cctx, int cmd_ret)
{
    int ret;

    if (cmd_ret == EAGAIN) {
        /* async processing, just return here */
        return EOK;
    }

    ret = sss_packet_new(cctx->creq, 0, sss_packet_get_cmd(cctx->creq->in),
                         &cctx->creq->out);
    if (ret != EOK) {
        DEBUG(SSSDBG_OP_FAILURE, ("sss_packet_new failed [%d][%s].\n",
                                  ret, strerror(ret)));
        return ret;
    }

    sss_packet_set_error(cctx->creq->out, cmd_ret);

    sss_cmd_done(cctx, NULL);

    return EOK;
}

struct pac_req_ctx {
    struct cli_ctx *cctx;
    struct pac_ctx *pac_ctx;
    const char *domain_name;
    const char *user_name;
    char *fq_name;
    struct sss_domain_info *dom;

    struct PAC_LOGON_INFO *logon_info;
    struct dom_sid2 *domain_sid;

    size_t gid_count;
    struct pac_dom_grps *gids;

    size_t current_grp_count;
    struct grp_info *current_grp_list;

    size_t add_gid_count;
    struct pac_dom_grps *add_gids;

    size_t del_grp_count;
    struct grp_info **del_grp_list;
};

static errno_t pac_add_user_next(struct pac_req_ctx *pr_ctx);
static void pac_get_domains_done(struct tevent_req *req);
static errno_t pac_user_get_grp_info(TALLOC_CTX *mem_ctx,
                                     struct pac_req_ctx *pr_ctx,
                                     size_t *_current_grp_count,
                                     struct grp_info **_current_grp_list);
static errno_t save_pac_user(struct pac_req_ctx *pr_ctx);
static void pac_get_group_done(struct tevent_req *subreq);
static errno_t pac_save_memberships_next(struct tevent_req *req);
static errno_t pac_store_membership(struct pac_req_ctx *pr_ctx,
                                    struct ldb_dn *user_dn,
                                    gid_t gid,
                                    struct sss_domain_info *grp_dom);
struct tevent_req *pac_save_memberships_send(struct pac_req_ctx *pr_ctx);
static void pac_save_memberships_done(struct tevent_req *req);


static errno_t pac_add_pac_user(struct cli_ctx *cctx)
{
    int ret;
    uint8_t *body;
    size_t blen;
    struct pac_req_ctx *pr_ctx;
    struct tevent_req *req;

    sss_packet_get_body(cctx->creq->in, &body, &blen);

    pr_ctx = talloc_zero(cctx, struct pac_req_ctx);
    if (pr_ctx == NULL) {
        DEBUG(SSSDBG_OP_FAILURE, ("talloc_new failed.\n"));
        return ENOMEM;
    }

    pr_ctx->cctx = cctx;

    pr_ctx->pac_ctx = talloc_get_type(cctx->rctx->pvt_ctx,  struct pac_ctx);
    if (pr_ctx->pac_ctx == NULL) {
        DEBUG(SSSDBG_FATAL_FAILURE, ("Cannot find pac responder context.\n"));
        return EINVAL;
    }

    ret = get_data_from_pac(pr_ctx, body, blen,
                            &pr_ctx->logon_info);
    if (ret != EOK) {
        DEBUG(SSSDBG_OP_FAILURE, ("get_data_from_pac failed.\n"));
        goto done;
    }

    pr_ctx->domain_name = pr_ctx->logon_info->info3.base.logon_domain.string;
    if (pr_ctx->domain_name == NULL) {
        DEBUG(SSSDBG_FATAL_FAILURE, ("No domain name in PAC"));
        ret = EINVAL;
        goto done;
    }

    if (pr_ctx->logon_info->info3.base.account_name.string == NULL) {
        ret = EINVAL;
        DEBUG(SSSDBG_FATAL_FAILURE, ("Missing account name in PAC.\n"));
        goto done;
    }

    /* To be compatible with winbind based lookups we have to use lower case
     * names only, effectively making the domain case-insenvitive. */
    pr_ctx->user_name = sss_tc_utf8_str_tolower(pr_ctx,
                            pr_ctx->logon_info->info3.base.account_name.string);
    if (pr_ctx->user_name == NULL) {
        ret = ENOMEM;
        DEBUG(SSSDBG_FATAL_FAILURE, ("sss_tc_utf8_str_tolower failed.\n"));
        goto done;
    }

    pr_ctx->dom = responder_get_domain(pr_ctx, cctx->rctx, pr_ctx->domain_name);
    if (pr_ctx->dom == NULL) {
        req = sss_dp_get_domains_send(cctx->rctx, cctx->rctx, true,
                                      pr_ctx->domain_name);
        if (req == NULL) {
            ret = ENOMEM;
        } else {
            tevent_req_set_callback(req, pac_get_domains_done, pr_ctx);
            ret = EAGAIN;
        }
        goto done;
    }

    ret = pac_add_user_next(pr_ctx);

done:
    if (ret != EAGAIN) {
        talloc_free(pr_ctx);
    }
    return pac_cmd_done(cctx, ret);
}

static void pac_get_domains_done(struct tevent_req *req)
{
    struct pac_req_ctx *pr_ctx = tevent_req_callback_data(req,
                                                          struct pac_req_ctx);
    struct cli_ctx *cctx = pr_ctx->cctx;
    int ret;

    ret = sss_dp_get_domains_recv(req);
    talloc_free(req);
    if (ret != EOK) {
        goto done;
    }

    pr_ctx->dom = responder_get_domain(pr_ctx, cctx->rctx, pr_ctx->domain_name);
    if (pr_ctx->dom == NULL) {
        DEBUG(SSSDBG_OP_FAILURE, ("Corresponding domain [%s] has not been "
                                  "found\n", pr_ctx->domain_name));
        ret = ENOENT;
        goto done;
    }

    ret = pac_add_user_next(pr_ctx);

done:
    if (ret != EAGAIN) {
        talloc_free(pr_ctx);
    }
    pac_cmd_done(cctx, ret);
}

static errno_t pac_add_user_next(struct pac_req_ctx *pr_ctx)
{
    int ret;
    struct tevent_req *req;
    struct dom_sid *my_dom_sid;
    struct local_mapping_ranges *my_range_map;

    /* this is a subdomain so we need to search for the fully qualified
     * name in the database */
    pr_ctx->fq_name = talloc_asprintf(pr_ctx, pr_ctx->dom->names->fq_fmt,
                                      pr_ctx->user_name, pr_ctx->dom->name);
    if (!pr_ctx->fq_name) {
        ret = ENOMEM;
        DEBUG(SSSDBG_OP_FAILURE, ("talloc_sprintf failed.\n"));
        goto done;
    }

    ret = save_pac_user(pr_ctx);
    if (ret != EOK) {
        DEBUG(SSSDBG_OP_FAILURE, ("save_pac_user failed.\n"));
        goto done;
    }

    ret = pac_user_get_grp_info(pr_ctx, pr_ctx, &pr_ctx->current_grp_count,
                                &pr_ctx->current_grp_list);
    if (ret != EOK) {
        DEBUG(SSSDBG_OP_FAILURE, ("pac_user_get_grp_info failed.\n"));
        goto done;
    }

    ret = get_my_domain_data(pr_ctx->pac_ctx, pr_ctx->dom,
                             &my_dom_sid, &my_range_map);
    if (ret != EOK) {
        DEBUG(SSSDBG_OP_FAILURE, ("get_my_domain_sid failed.\n"));
        goto done;
    }

    ret = get_gids_from_pac(pr_ctx, pr_ctx->pac_ctx,
                            my_range_map, my_dom_sid, pr_ctx->logon_info,
                            &pr_ctx->gid_count, &pr_ctx->gids);
    if (ret != EOK) {
        DEBUG(SSSDBG_OP_FAILURE, ("get_gids_from_pac failed.\n"));
        goto done;
    }

    ret = diff_gid_lists(pr_ctx,
                         pr_ctx->current_grp_count, pr_ctx->current_grp_list,
                         pr_ctx->gid_count, pr_ctx->gids,
                         &pr_ctx->add_gid_count, &pr_ctx->add_gids,
                         &pr_ctx->del_grp_count, &pr_ctx->del_grp_list);
    if (ret != EOK) {
        DEBUG(SSSDBG_OP_FAILURE, ("diff_gid_lists failed.\n"));
        goto done;
    }

    req = pac_save_memberships_send(pr_ctx);
    if (req == NULL) {
        ret = ENOMEM;
        goto done;
    }

    tevent_req_set_callback(req, pac_save_memberships_done, pr_ctx);

    ret = EAGAIN;

done:
    return ret;
}

static errno_t pac_user_get_grp_info(TALLOC_CTX *mem_ctx,
                                     struct pac_req_ctx *pr_ctx,
                                     size_t *_current_grp_count,
                                     struct grp_info **_current_grp_list)
{
    struct sysdb_ctx *sysdb;
    int ret;
    TALLOC_CTX *tmp_ctx = NULL;
    struct ldb_result *res = NULL;
    struct grp_info *current_grp_list = NULL;
    size_t current_grp_count = 0;
    size_t c;
    const char *tmp_str;

    sysdb = pr_ctx->dom->sysdb;
    if (sysdb == NULL) {
        ret = EINVAL;
        DEBUG(SSSDBG_FATAL_FAILURE, ("Fatal: Sysdb CTX not found for this domain!\n"));
        goto done;
    }

    tmp_ctx = talloc_new(NULL);
    if (tmp_ctx == NULL) {
        ret = ENOMEM;
        DEBUG(SSSDBG_OP_FAILURE, ("talloc_new failed.\n"));
        goto done;
    }

    ret = sysdb_initgroups(tmp_ctx, sysdb,
                           pr_ctx->dom, pr_ctx->user_name, &res);
    if (ret != EOK) {
        DEBUG(SSSDBG_OP_FAILURE, ("sysdb_initgroups failed.\n"));
        goto done;
    }

    /* First result is the user entry then the groups follow */
    if (res->count > 1) {
        current_grp_count = res->count - 1;
        current_grp_list = talloc_array(tmp_ctx, struct grp_info,
                                        current_grp_count);
        if (current_grp_list == NULL) {
            DEBUG(SSSDBG_OP_FAILURE, ("talloc_array failed.\n"));
            ret = ENOMEM;
            goto done;
        }

        for (c = 0; c < current_grp_count; c++) {
            current_grp_list[c].gid =
                                  ldb_msg_find_attr_as_uint64(res->msgs[c + 1],
                                                              SYSDB_GIDNUM, 0);
            if (current_grp_list[c].gid == 0) {
                DEBUG(SSSDBG_OP_FAILURE, ("Missing GID.\n"));
                ret = EINVAL;
                goto done;
            }

            tmp_str = ldb_msg_find_attr_as_string(res->msgs[c + 1],
                                                  SYSDB_ORIG_DN, NULL);
            if (tmp_str != NULL) {
                current_grp_list[c].orig_dn = talloc_strdup(current_grp_list,
                                                            tmp_str);
                if (current_grp_list[c].orig_dn == NULL) {
                    DEBUG(SSSDBG_OP_FAILURE, ("talloc_strdup failed.\n"));
                    ret = ENOMEM;
                    goto done;
                }
            }

            current_grp_list[c].dn = ldb_dn_copy(current_grp_list,
                                                 res->msgs[c + 1]->dn);
            if (current_grp_list[c].dn == NULL) {
                DEBUG(SSSDBG_OP_FAILURE, ("ldb_dn_copy failed.\n"));
                ret = ENOMEM;
                goto done;
            }
        }
    }

    *_current_grp_count = current_grp_count;
    *_current_grp_list = talloc_steal(mem_ctx, current_grp_list);

    ret = EOK;

done:
    talloc_free(tmp_ctx);

    return ret;
}

static errno_t save_pac_user(struct pac_req_ctx *pr_ctx)
{
    struct sysdb_ctx *sysdb;
    int ret;
    const char *attrs[] = {SYSDB_NAME, SYSDB_UIDNUM, SYSDB_GIDNUM, NULL};
    struct ldb_message *msg;
    struct passwd *pwd = NULL;
    TALLOC_CTX *tmp_ctx = NULL;
    struct sysdb_attrs *user_attrs = NULL;

    sysdb = pr_ctx->dom->sysdb;
    if (sysdb == NULL) {
        ret = EINVAL;
        DEBUG(SSSDBG_FATAL_FAILURE, ("Fatal: Sysdb CTX not found for this domain!\n"));
        goto done;
    }

    tmp_ctx = talloc_new(NULL);
    if (tmp_ctx == NULL) {
        ret = ENOMEM;
        DEBUG(SSSDBG_OP_FAILURE, ("talloc_new failed.\n"));
        goto done;
    }

    ret = get_pwd_from_pac(tmp_ctx, pr_ctx->pac_ctx, pr_ctx->dom,
                           pr_ctx->logon_info, &pwd, &user_attrs);
    if (ret != EOK) {
        DEBUG(SSSDBG_OP_FAILURE, ("get_pwd_from_pac failed.\n"));
        goto done;
    }

    ret = sysdb_search_user_by_uid(tmp_ctx, sysdb, pr_ctx->dom,
                                   pwd->pw_uid, attrs, &msg);
    if (ret == EOK) {
        if (new_and_cached_user_differs(pwd, msg)) {
            ret = sysdb_delete_user(sysdb, NULL, pwd->pw_uid);
            if (ret != EOK) {
                DEBUG(SSSDBG_OP_FAILURE, ("sysdb_delete_user failed.\n"));
                goto done;
            }
        } else {
            goto done;
        }
    } else if (ret != EOK && ret != ENOENT) {
        DEBUG(SSSDBG_OP_FAILURE, ("sysdb_search_user_by_name failed.\n"));
        goto done;
    }

    ret = sysdb_store_user(sysdb, pwd->pw_name, NULL,
                           pwd->pw_uid, pwd->pw_gid, pwd->pw_gecos,
                           pwd->pw_dir,
                           pwd->pw_shell, NULL, user_attrs, NULL,
                           pr_ctx->dom->user_timeout, 0);
    if (ret != EOK) {
        DEBUG(SSSDBG_OP_FAILURE, ("sysdb_store_user failed [%d][%s].\n",
                                  ret, strerror(ret)));
        goto done;
    }

    ret = EOK;

done:
    talloc_free(tmp_ctx);
    return ret;
}

struct pac_save_memberships_state {
    size_t gid_iter;
    size_t dom_iter;
    struct ldb_dn *user_dn;

    struct pac_req_ctx *pr_ctx;
    struct sss_domain_info *group_dom;
};

static errno_t
pac_save_memberships_delete(struct pac_save_memberships_state *state);

struct tevent_req *pac_save_memberships_send(struct pac_req_ctx *pr_ctx)
{
    struct pac_save_memberships_state *state;
    struct sss_domain_info *dom = pr_ctx->dom;
    struct tevent_req *req;
    errno_t ret;

    req = tevent_req_create(pr_ctx, &state, struct pac_save_memberships_state);
    if (req == NULL) {
        return NULL;
    }

    state->gid_iter = 0;
    state->dom_iter = 0;
    state->user_dn = sysdb_user_dn(dom->sysdb, state, dom, pr_ctx->fq_name);
    if (state->user_dn == NULL) {
        ret = ENOMEM;
        goto done;
    }
    state->pr_ctx = pr_ctx;

    /* Remote users are members of local groups */
    if (pr_ctx->dom->parent != NULL) {
        state->group_dom = pr_ctx->dom->parent;
    } else {
        state->group_dom = pr_ctx->dom;
    }

    ret = pac_save_memberships_delete(state);
    if (ret != EOK) {
        DEBUG(SSSDBG_OP_FAILURE, ("pac_save_memberships_delete failed.\n"));
        goto done;
    }

    ret = pac_save_memberships_next(req);
    if (ret == EOK) {
        tevent_req_done(req);
        tevent_req_post(req, pr_ctx->cctx->ev);
    }

done:
    if (ret != EOK && ret != EAGAIN) {
        tevent_req_error(req, ret);
        tevent_req_post(req, pr_ctx->cctx->ev);
    }

    return req;
}

static errno_t
pac_save_memberships_delete(struct pac_save_memberships_state *state)
{
    int ret;
    int sret;
    size_t c;
    struct pac_req_ctx *pr_ctx;
    bool in_transaction = false;
    TALLOC_CTX *tmp_ctx;
    struct sysdb_attrs *user_attrs = NULL;

    pr_ctx = state->pr_ctx;

    if (pr_ctx->del_grp_count == 0) {
        return EOK;
    }

    if (pr_ctx->del_grp_list == NULL) {
        DEBUG(SSSDBG_OP_FAILURE, ("Missing group list.\n"));
        return EINVAL;
    }

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

    user_attrs = sysdb_new_attrs(tmp_ctx);
    if (user_attrs == NULL) {
        DEBUG(SSSDBG_OP_FAILURE, ("sysdb_new_attrs failed.\n"));
        ret = ENOMEM;
        goto done;
    }

    ret = sysdb_transaction_start(state->group_dom->sysdb);
    if (ret != EOK) {
        DEBUG(SSSDBG_OP_FAILURE, ("sysdb_transaction_start failed.\n"));
        goto done;
    }
    in_transaction = true;

    for (c = 0; c < pr_ctx->del_grp_count; c++) {
        ret = sysdb_mod_group_member(state->group_dom->sysdb, state->user_dn,
                                     pr_ctx->del_grp_list[c]->dn,
                                     LDB_FLAG_MOD_DELETE);
        if (ret != EOK) {
            DEBUG(SSSDBG_OP_FAILURE, ("sysdb_mod_group_member failed.\n"));
            goto done;
        }

        if (pr_ctx->del_grp_list[c]->orig_dn != NULL) {
            ret = sysdb_attrs_add_string(user_attrs, SYSDB_ORIG_MEMBEROF,
                                         pr_ctx->del_grp_list[c]->orig_dn);
            if (ret != EOK) {
                DEBUG(SSSDBG_OP_FAILURE, ("sysdb_attrs_add_string failed.\n"));
                goto done;
            }
        }
    }

    ret = sysdb_set_entry_attr(pr_ctx->dom->sysdb, state->user_dn, user_attrs,
                               LDB_FLAG_MOD_DELETE);
    if (ret != EOK) {
        DEBUG(SSSDBG_OP_FAILURE, ("sysdb_set_entry_attr failed.\n"));
        goto done;
    }

    ret = sysdb_transaction_commit(state->group_dom->sysdb);
    if (ret != EOK) {
        DEBUG(SSSDBG_OP_FAILURE, ("sysdb_transaction_commit failed.\n"));
        goto done;
    }
    in_transaction = false;

    ret = EOK;
done:
    if (in_transaction) {
        sret = sysdb_transaction_cancel(state->group_dom->sysdb);
        if (sret != EOK) {
            DEBUG(SSSDBG_OP_FAILURE, ("sysdb_transaction_cancel failed.\n"));
        }
    }

    talloc_free(tmp_ctx);

    return ret;
}

static errno_t pac_save_memberships_next(struct tevent_req *req)
{
    errno_t ret;
    uint32_t gid;
    struct sss_domain_info *grp_dom;
    struct tevent_req *subreq;
    struct pac_save_memberships_state *state;
    struct pac_req_ctx *pr_ctx;

    state = tevent_req_data(req, struct pac_save_memberships_state);
    pr_ctx = state->pr_ctx;

    if (pr_ctx->add_gid_count == 0) {
        return EOK;
    }

    if (pr_ctx->add_gids == NULL) {
        DEBUG(SSSDBG_OP_FAILURE, ("Missing group list.\n"));
        return EINVAL;
    }

    while (pr_ctx->add_gids[state->dom_iter].grp_dom != NULL) {

        if (pr_ctx->add_gids[state->dom_iter].gids == NULL ||
            pr_ctx->add_gids[state->dom_iter].gid_count == 0) {
            state->dom_iter++;
            state->gid_iter = 0;
            continue;
        }


        gid = pr_ctx->add_gids[state->dom_iter].gids[state->gid_iter];
        grp_dom = pr_ctx->add_gids[state->dom_iter].grp_dom;

        ret = pac_store_membership(state->pr_ctx, state->user_dn, gid, grp_dom);
        if (ret == EOK) {
            state->gid_iter++;
            if (state->gid_iter >= pr_ctx->add_gids[state->dom_iter].gid_count) {
                state->dom_iter++;
                state->gid_iter = 0;
            }
            continue;
        } else if (ret == ENOENT) {
            subreq = sss_dp_get_account_send(state, pr_ctx->cctx->rctx,
                                             grp_dom, true,
                                             SSS_DP_GROUP, NULL,
                                             gid, NULL);
            if (subreq == NULL) {
                ret = ENOMEM;
                goto done;
            }
            tevent_req_set_callback(subreq, pac_get_group_done, req);

            return EAGAIN;
        } else  {
            goto done;
        }
    }

    ret = EOK;
done:
    return ret;
}

static void pac_get_group_done(struct tevent_req *subreq)
{
    struct tevent_req *req;
    struct pac_save_memberships_state *state;

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

    errno_t ret;
    dbus_uint16_t err_maj;
    dbus_uint32_t err_min;
    char *err_msg;
    gid_t gid;
    struct sss_domain_info *grp_dom;
    struct pac_req_ctx *pr_ctx = state->pr_ctx;

    ret = sss_dp_get_account_recv(req, subreq,
                                  &err_maj, &err_min,
                                  &err_msg);
    talloc_zfree(subreq);
    talloc_zfree(err_msg);
    if (ret != EOK) {
        goto error;
    }

    gid = pr_ctx->add_gids[state->dom_iter].gids[state->gid_iter];
    grp_dom = pr_ctx->add_gids[state->dom_iter].grp_dom;
    ret = pac_store_membership(state->pr_ctx, state->user_dn, gid, grp_dom);
    if (ret != EOK) {
        goto error;
    }
    state->gid_iter++;
    if (state->gid_iter >= pr_ctx->add_gids[state->dom_iter].gid_count) {
        state->dom_iter++;
        state->gid_iter = 0;
    }

    ret = pac_save_memberships_next(req);
    if (ret == EOK) {
        tevent_req_done(req);
    } else if (ret != EAGAIN) {
        goto error;
    }

    return;

error:
    tevent_req_error(req, ret);
}

static errno_t
pac_store_membership(struct pac_req_ctx *pr_ctx,
                     struct ldb_dn *user_dn,
                     gid_t gid, struct sss_domain_info *grp_dom)
{
    TALLOC_CTX *tmp_ctx;
    struct sysdb_attrs *user_attrs;
    struct ldb_message *group;
    errno_t ret;
    const char *orig_group_dn;
    const char *group_attrs[] = { SYSDB_ORIG_DN, NULL };

    tmp_ctx = talloc_new(NULL);
    if (tmp_ctx == NULL) {
        return ENOMEM;
    }

    ret = sysdb_search_group_by_gid(tmp_ctx, grp_dom->sysdb,
                                    gid, group_attrs, &group);
    if (ret != EOK) {
        DEBUG(SSSDBG_TRACE_INTERNAL, ("sysdb_search_group_by_gid for gid [%d]" \
                                      "failed [%d][%s].\n",
                                      gid, ret, strerror(ret)));
        goto done;
    }

    ret = sysdb_mod_group_member(grp_dom->sysdb, user_dn, group->dn,
                                 LDB_FLAG_MOD_ADD);
    if (ret != EOK) {
        DEBUG(SSSDBG_OP_FAILURE, ("sysdb_mod_group_member failed.\n"));
        goto done;
    }

    orig_group_dn = ldb_msg_find_attr_as_string(group, SYSDB_ORIG_DN, NULL);
    if (orig_group_dn != NULL) {
        user_attrs = sysdb_new_attrs(tmp_ctx);
        if (user_attrs == NULL) {
            DEBUG(SSSDBG_OP_FAILURE, ("sysdb_new_attrs failed.\n"));
            ret = ENOMEM;
            goto done;
        }

        ret = sysdb_attrs_add_string(user_attrs, SYSDB_ORIG_MEMBEROF,
                                     orig_group_dn);
        if (ret != EOK) {
            DEBUG(SSSDBG_OP_FAILURE, ("sysdb_attrs_add_string failed.\n"));
            goto done;
        }

        ret = sysdb_set_entry_attr(pr_ctx->dom->sysdb, user_dn, user_attrs,
                                  LDB_FLAG_MOD_ADD);
        if (ret != EOK) {
            DEBUG(SSSDBG_OP_FAILURE, ("sysdb_set_entry_attr failed.\n"));
            goto done;
        }
    }

done:
    talloc_free(tmp_ctx);
    return ret;
}

static errno_t pac_save_memberships_recv(struct tevent_req *subreq)
{
    TEVENT_REQ_RETURN_ON_ERROR(subreq);

    return EOK;
}

static void pac_save_memberships_done(struct tevent_req *req)
{
    struct pac_req_ctx *pr_ctx = tevent_req_callback_data(req, struct pac_req_ctx);
    struct cli_ctx *cctx = pr_ctx->cctx;
    errno_t ret;

    ret = pac_save_memberships_recv(req);
    talloc_zfree(req);

    talloc_free(pr_ctx);
    pac_cmd_done(cctx, ret);
}

struct cli_protocol_version *register_cli_protocol_version(void)
{
    static struct cli_protocol_version pac_cli_protocol_version[] = {
        {1, "2011-04-12", "initial version"},
        {0, NULL, NULL}
    };

    return pac_cli_protocol_version;
}

static struct sss_cmd_table pac_cmds[] = {
    {SSS_GET_VERSION, sss_cmd_get_version},
    {SSS_PAC_ADD_PAC_USER, pac_add_pac_user},
    {SSS_CLI_NULL, NULL}
};

struct sss_cmd_table *get_pac_cmds(void) {
    return pac_cmds;
}

int pac_cmd_execute(struct cli_ctx *cctx)
{
    enum sss_cli_command cmd;
    int i;

    cmd = sss_packet_get_cmd(cctx->creq->in);

    for (i = 0; pac_cmds[i].cmd != SSS_CLI_NULL; i++) {
        if (cmd == pac_cmds[i].cmd) {
            return pac_cmds[i].fn(cctx);
        }
    }

    return EINVAL;
}