summaryrefslogtreecommitdiff
path: root/src/providers/ad/ad_init.c
blob: bc811e81ac496723f150c3441382b8f680a07ff1 (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
/*
    SSSD

    Authors:
        Stephen Gallagher <sgallagh@redhat.com>

    Copyright (C) 2012 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 <sys/types.h>
#include <unistd.h>
#include <sys/stat.h>
#include <fcntl.h>

#include "util/util.h"
#include "providers/ad/ad_common.h"
#include "providers/ad/ad_access.h"
#include "providers/ldap/ldap_common.h"
#include "providers/ldap/sdap_access.h"
#include "providers/ldap/sdap_idmap.h"
#include "providers/krb5/krb5_auth.h"
#include "providers/krb5/krb5_init_shared.h"
#include "providers/ad/ad_id.h"
#include "providers/ad/ad_srv.h"
#include "providers/dp_dyndns.h"
#include "providers/ad/ad_subdomains.h"

struct ad_options *ad_options = NULL;

static void
ad_shutdown(struct be_req *req);

struct bet_ops ad_id_ops = {
    .handler = ad_account_info_handler,
    .finalize = ad_shutdown,
    .check_online = ad_check_online
};

struct bet_ops ad_auth_ops = {
    .handler = krb5_pam_handler,
    .finalize = NULL
};

struct bet_ops ad_chpass_ops = {
    .handler = krb5_pam_handler,
    .finalize = NULL
};

struct bet_ops ad_access_ops = {
    .handler = ad_access_handler,
    .finalize = NULL
};

static errno_t
common_ad_init(struct be_ctx *bectx)
{
    errno_t ret;
    char *ad_servers = NULL;
    char *ad_backup_servers = NULL;

    /* Get AD-specific options */
    ret = ad_get_common_options(bectx, bectx->cdb,
                                bectx->conf_path,
                                bectx->domain,
                                &ad_options);
    if (ret != EOK) {
        DEBUG(SSSDBG_FATAL_FAILURE,
              ("Could not parse common options: [%s]\n",
               strerror(ret)));
        goto done;
    }

    ad_servers = dp_opt_get_string(ad_options->basic, AD_SERVER);
    ad_backup_servers = dp_opt_get_string(ad_options->basic, AD_BACKUP_SERVER);

    /* Set up the failover service */
    ret = ad_failover_init(ad_options, bectx, ad_servers, ad_backup_servers, ad_options,
                           &ad_options->service);
    if (ret != EOK) {
        DEBUG(SSSDBG_FATAL_FAILURE,
              ("Failed to init AD failover service: [%s]\n",
               strerror(ret)));
        goto done;
    }

    ret = EOK;
done:
    return ret;
}

int
sssm_ad_id_init(struct be_ctx *bectx,
                struct bet_ops **ops,
                void **pvt_data)
{
    errno_t ret;
    struct ad_id_ctx *ad_ctx;
    struct sdap_id_ctx *sdap_ctx;
    const char *hostname;
    const char *ad_domain;
    struct ad_srv_plugin_ctx *srv_ctx;

    if (!ad_options) {
        ret = common_ad_init(bectx);
        if (ret != EOK) {
            return ret;
        }
    }

    if (ad_options->id_ctx) {
        /* already initialized */
        *ops = &ad_id_ops;
        *pvt_data = ad_options->id_ctx;
        return EOK;
    }

    ad_ctx = talloc_zero(ad_options, struct ad_id_ctx);
    if (!ad_options) {
        return ENOMEM;
    }
    ad_ctx->ad_options = ad_options;
    ad_options->id_ctx = ad_ctx;

    sdap_ctx = sdap_id_ctx_new(ad_options, bectx, ad_options->service->sdap);
    if (sdap_ctx == NULL) {
        return ENOMEM;
    }
    ad_ctx->sdap_id_ctx = sdap_ctx;
    ad_ctx->ldap_ctx = sdap_ctx->conn;

    ad_ctx->gc_ctx = sdap_id_ctx_conn_add(sdap_ctx, ad_options->service->gc);
    if (ad_ctx->gc_ctx == NULL) {
        return ENOMEM;
    }

    ret = ad_dyndns_init(sdap_ctx->be, ad_options);
    if (ret != EOK) {
        DEBUG(SSSDBG_MINOR_FAILURE,
             ("Failure setting up automatic DNS update\n"));
        /* Continue without DNS updates */
    }

    ret = sdap_setup_child();
    if (ret != EOK) {
        DEBUG(SSSDBG_FATAL_FAILURE,
              ("setup_child failed [%d][%s].\n",
               ret, strerror(ret)));
        goto done;
    }

    /* Set up various SDAP options */
    ret = ad_get_id_options(ad_options, bectx->cdb,
                            bectx->conf_path,
                            &sdap_ctx->opts);
    if (ret != EOK) {
        goto done;
    }

    ret = sdap_id_setup_tasks(sdap_ctx);
    if (ret != EOK) {
        goto done;
    }

    /* Set up the ID mapping object */
    ret = sdap_idmap_init(sdap_ctx, sdap_ctx, &sdap_ctx->opts->idmap_ctx);
    if (ret != EOK) goto done;


    ret = setup_tls_config(sdap_ctx->opts->basic);
    if (ret != EOK) {
        DEBUG(SSSDBG_CRIT_FAILURE,
              ("setup_tls_config failed [%s]\n", strerror(ret)));
        goto done;
    }

    /* setup SRV lookup plugin */
    hostname = dp_opt_get_string(ad_options->basic, AD_HOSTNAME);
    if (dp_opt_get_bool(ad_options->basic, AD_ENABLE_DNS_SITES)) {
        /* use AD plugin */
        ad_domain = dp_opt_get_string(ad_options->basic, AD_DOMAIN);
        srv_ctx = ad_srv_plugin_ctx_init(bectx, bectx->be_res,
                                         default_host_dbs, ad_options->id,
                                         hostname, ad_domain);
        if (srv_ctx == NULL) {
            DEBUG(SSSDBG_FATAL_FAILURE, ("Out of memory?\n"));
            ret = ENOMEM;
            goto done;
        }

        be_fo_set_srv_lookup_plugin(bectx, ad_srv_plugin_send,
                                    ad_srv_plugin_recv, srv_ctx, "AD");
    } else {
        /* fall back to standard plugin */
        ret = be_fo_set_dns_srv_lookup_plugin(bectx, hostname);
        if (ret != EOK) {
            DEBUG(SSSDBG_CRIT_FAILURE, ("Unable to set SRV lookup plugin "
                                        "[%d]: %s\n", ret, strerror(ret)));
            goto done;
        }
    }

    /* setup periodical refresh of expired records */
    ret = be_refresh_add_cb(bectx->refresh_ctx, BE_REFRESH_TYPE_NETGROUPS,
                            sdap_refresh_netgroups_send,
                            sdap_refresh_netgroups_recv,
                            sdap_ctx);
    if (ret != EOK && ret != EEXIST) {
        DEBUG(SSSDBG_MINOR_FAILURE, ("Periodical refresh of netgroups "
              "will not work [%d]: %s\n", ret, strerror(ret)));
    }

    *ops = &ad_id_ops;
    *pvt_data = ad_ctx;

    ret = EOK;
done:
    if (ret != EOK) {
        talloc_zfree(ad_options->id_ctx);
    }
    return ret;
}

int
sssm_ad_auth_init(struct be_ctx *bectx,
                  struct bet_ops **ops,
                  void **pvt_data)
{
    errno_t ret;
    struct krb5_ctx *krb5_auth_ctx = NULL;

    if (!ad_options) {
        ret = common_ad_init(bectx);
        if (ret != EOK) {
            return ret;
        }
    }

    if (ad_options->auth_ctx) {
        /* Already initialized */
        *ops = &ad_auth_ops;
        *pvt_data = ad_options->auth_ctx;
        return EOK;
    }

    krb5_auth_ctx = talloc_zero(NULL, struct krb5_ctx);
    if (!krb5_auth_ctx) {
        ret = ENOMEM;
        goto done;
    }

    krb5_auth_ctx->service = ad_options->service->krb5_service;

    ret = ad_get_auth_options(krb5_auth_ctx, ad_options, bectx,
                              &krb5_auth_ctx->opts);
    if (ret != EOK) {
        DEBUG(SSSDBG_FATAL_FAILURE,
              ("Could not determine Kerberos options\n"));
        goto done;
    }

    ret = krb5_child_init(krb5_auth_ctx, bectx);
    if (ret != EOK) {
        DEBUG(SSSDBG_FATAL_FAILURE,
              ("Could not initialize krb5_child settings: [%s]\n",
               strerror(ret)));
        goto done;
    }

    ad_options->auth_ctx = talloc_steal(ad_options, krb5_auth_ctx);
    *ops = &ad_auth_ops;
    *pvt_data = ad_options->auth_ctx;

done:
    if (ret != EOK) {
        talloc_free(krb5_auth_ctx);
    }
    return ret;
}

int
sssm_ad_chpass_init(struct be_ctx *bectx,
                    struct bet_ops **ops,
                    void **pvt_data)
{
    errno_t ret;

    if (!ad_options) {
        ret = common_ad_init(bectx);
        if (ret != EOK) {
            return ret;
        }
    }

    if (ad_options->auth_ctx) {
        /* Already initialized */
        *ops = &ad_chpass_ops;
        *pvt_data = ad_options->auth_ctx;
        return EOK;
    }

    ret = sssm_ad_auth_init(bectx, ops, pvt_data);
    *ops = &ad_chpass_ops;
    ad_options->auth_ctx = *pvt_data;
    return ret;
}

int
sssm_ad_access_init(struct be_ctx *bectx,
                    struct bet_ops **ops,
                    void **pvt_data)
{
    errno_t ret;
    struct ad_access_ctx *access_ctx;
    struct ad_id_ctx *ad_id_ctx;

    access_ctx = talloc_zero(bectx, struct ad_access_ctx);
    if (!access_ctx) return ENOMEM;

    ret = sssm_ad_id_init(bectx, ops, (void **)&ad_id_ctx);
    if (ret != EOK) {
        goto fail;
    }
    access_ctx->sdap_ctx = ad_id_ctx->sdap_id_ctx;

    ret = dp_copy_options(access_ctx, ad_options->basic, AD_OPTS_BASIC,
                          &access_ctx->ad_options);
    if (ret != EOK) {
        DEBUG(SSSDBG_FATAL_FAILURE,
              ("Could not initialize access provider options: [%s]\n",
               strerror(ret)));
        goto fail;
    }

    /* Set up an sdap_access_ctx for checking expired/locked accounts */
    access_ctx->sdap_access_ctx =
            talloc_zero(access_ctx, struct sdap_access_ctx);
    if (!access_ctx->sdap_access_ctx) {
        ret = ENOMEM;
        goto fail;
    }

    access_ctx->sdap_access_ctx->id_ctx = access_ctx->sdap_ctx;
    access_ctx->sdap_access_ctx->access_rule[0] = LDAP_ACCESS_EXPIRE;
    access_ctx->sdap_access_ctx->access_rule[1] = LDAP_ACCESS_EMPTY;

    *ops = &ad_access_ops;
    *pvt_data = access_ctx;

    return EOK;

fail:
    talloc_free(access_ctx);
    return ret;
}

static void
ad_shutdown(struct be_req *req)
{
    /* TODO: Clean up any internal data */
    sdap_handler_done(req, DP_ERR_OK, EOK, NULL);
}

int sssm_ad_subdomains_init(struct be_ctx *bectx,
                            struct bet_ops **ops,
                            void **pvt_data)
{
    int ret;
    struct ad_id_ctx *id_ctx;
    const char *ad_domain;

    ret = sssm_ad_id_init(bectx, ops, (void **) &id_ctx);
    if (ret != EOK) {
        DEBUG(SSSDBG_CRIT_FAILURE, ("sssm_ad_id_init failed.\n"));
        return ret;
    }

    if (ad_options == NULL) {
        DEBUG(SSSDBG_CRIT_FAILURE, ("Global AD options not available.\n"));
        return EINVAL;
    }

    ad_domain = dp_opt_get_string(ad_options->basic, AD_DOMAIN);

    ret = ad_subdom_init(bectx, id_ctx, ad_domain, ops, pvt_data);
    if (ret != EOK) {
        DEBUG(SSSDBG_CRIT_FAILURE, ("ad_subdom_init failed.\n"));
        return ret;
    }

    return EOK;
}