summaryrefslogtreecommitdiff
path: root/src/providers/ipa/ipa_subdomains_id.c
blob: c29a2a3047af105966b636422105abd15e8a3992 (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
/*
    SSSD

    IPA Identity Backend Module for sub-domains

    Authors:
        Sumit Bose <sbose@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 <errno.h>

#include "util/util.h"
#include "util/strtonum.h"
#include "db/sysdb.h"
#include "providers/ldap/ldap_common.h"
#include "providers/ldap/sdap_async.h"
#include "providers/ipa/ipa_id.h"
#include "providers/ad/ad_id.h"
#include "providers/ipa/ipa_subdomains.h"

struct ipa_get_subdom_acct {
    struct tevent_context *ev;
    struct sdap_id_ctx *ctx;
    struct sdap_id_op *op;
    struct sysdb_ctx *sysdb;
    struct sss_domain_info *domain;

    int entry_type;
    const char *filter;
    int filter_type;

    int dp_error;
};

static void ipa_get_subdom_acct_connected(struct tevent_req *subreq);
static void ipa_get_subdom_acct_done(struct tevent_req *subreq);

struct tevent_req *ipa_get_subdom_acct_send(TALLOC_CTX *memctx,
                                            struct tevent_context *ev,
                                            struct sdap_id_ctx *ctx,
                                            struct be_acct_req *ar)
{
    struct tevent_req *req;
    struct ipa_get_subdom_acct *state;
    struct tevent_req *subreq;
    int ret;

    req = tevent_req_create(memctx, &state, struct ipa_get_subdom_acct);
    if (!req) return NULL;

    state->ev = ev;
    state->ctx = ctx;
    state->dp_error = DP_ERR_FATAL;

    state->op = sdap_id_op_create(state, state->ctx->conn->conn_cache);
    if (!state->op) {
        DEBUG(SSSDBG_OP_FAILURE, ("sdap_id_op_create failed\n"));
        ret = ENOMEM;
        goto fail;
    }

    state->domain = find_subdomain_by_name(state->ctx->be->domain,
                                           ar->domain, true);
    if (state->domain == NULL) {
        DEBUG(SSSDBG_OP_FAILURE, ("find_subdomain_by_name failed.\n"));
        ret = ENOMEM;
        goto fail;
    }
    state->sysdb = state->domain->sysdb;

    state->entry_type = (ar->entry_type & BE_REQ_TYPE_MASK);
    state->filter = ar->filter_value;
    state->filter_type = ar->filter_type;

    switch (state->entry_type) {
        case BE_REQ_USER:
        case BE_REQ_GROUP:
        case BE_REQ_BY_SECID:
        case BE_REQ_USER_AND_GROUP:
            ret = EOK;
            break;
        case BE_REQ_INITGROUPS:
            ret = ENOTSUP;
            DEBUG(SSSDBG_TRACE_FUNC, ("Initgroups requests are not handled " \
                                      "by the IPA provider but are resolved " \
                                      "by the responder directly from the " \
                                      "cache.\n"));
            break;
        default:
            ret = EINVAL;
            DEBUG(SSSDBG_OP_FAILURE, ("Invalid sub-domain request type.\n"));
    }
    if (ret != EOK) goto fail;

    subreq = sdap_id_op_connect_send(state->op, state, &ret);
    if (!subreq) {
        goto fail;
    }
    tevent_req_set_callback(subreq, ipa_get_subdom_acct_connected, req);

    return req;

fail:
    tevent_req_error(req, ret);
    tevent_req_post(req, ev);
    return req;
}

static void ipa_get_subdom_acct_connected(struct tevent_req *subreq)
{
    struct tevent_req *req = tevent_req_callback_data(subreq,
                                                struct tevent_req);
    struct ipa_get_subdom_acct *state = tevent_req_data(req,
                                                struct ipa_get_subdom_acct);
    int dp_error = DP_ERR_FATAL;
    int ret;
    char *endptr;
    struct req_input *req_input;

    ret = sdap_id_op_connect_recv(subreq, &dp_error);
    talloc_zfree(subreq);
    if (ret != EOK) {
        state->dp_error = dp_error;
        tevent_req_error(req, ret);
        return;
    }

    req_input = talloc(state, struct req_input);
    if (req_input == NULL) {
        DEBUG(SSSDBG_OP_FAILURE, ("talloc failed.\n"));
        tevent_req_error(req, ENOMEM);
        return;
    }

    switch (state->filter_type) {
        case BE_FILTER_NAME:
            req_input->type = REQ_INP_NAME;
            req_input->inp.name = talloc_strdup(req_input, state->filter);
            if (req_input->inp.name == NULL) {
                DEBUG(SSSDBG_OP_FAILURE, ("talloc_strdup failed.\n"));
                tevent_req_error(req, ENOMEM);
                return;
            }
            break;
        case BE_FILTER_IDNUM:
            req_input->type = REQ_INP_ID;
            req_input->inp.id = strtouint32(state->filter, &endptr, 10);
            if (errno || *endptr || (state->filter == endptr)) {
                tevent_req_error(req, errno ? errno : EINVAL);
                return;
            }
            break;
        case BE_FILTER_SECID:
            req_input->type = REQ_INP_SECID;
            req_input->inp.secid = talloc_strdup(req_input, state->filter);
            if (req_input->inp.secid == NULL) {
                DEBUG(SSSDBG_OP_FAILURE, ("talloc_strdup failed.\n"));
                tevent_req_error(req, ENOMEM);
                return;
            }
            break;
        default:
            DEBUG(SSSDBG_OP_FAILURE, ("Invalid sub-domain filter type.\n"));
            state->dp_error = dp_error;
            tevent_req_error(req, EINVAL);
            return;
    }

    subreq = ipa_s2n_get_acct_info_send(state,
                                        state->ev,
                                        state->ctx->opts,
                                        state->domain,
                                        sdap_id_op_handle(state->op),
                                        state->entry_type,
                                        req_input);
    if (!subreq) {
        tevent_req_error(req, ENOMEM);
        return;
    }
    tevent_req_set_callback(subreq, ipa_get_subdom_acct_done, req);

    return;
}

static void ipa_get_subdom_acct_done(struct tevent_req *subreq)
{
    struct tevent_req *req = tevent_req_callback_data(subreq,
                                                struct tevent_req);
    struct ipa_get_subdom_acct *state = tevent_req_data(req,
                                                struct ipa_get_subdom_acct);
    int dp_error = DP_ERR_FATAL;
    int ret;

    ret = ipa_s2n_get_acct_info_recv(subreq);
    talloc_zfree(subreq);

    ret = sdap_id_op_done(state->op, ret, &dp_error);
    if (dp_error == DP_ERR_OK && ret != EOK) {
        /* retry */
        subreq = sdap_id_op_connect_send(state->op, state, &ret);
        if (!subreq) {
            tevent_req_error(req, ret);
            return;
        }
        tevent_req_set_callback(subreq, ipa_get_subdom_acct_connected, req);
        return;
    }

    if (ret && ret != ENOENT) {
        state->dp_error = dp_error;
        tevent_req_error(req, ret);
        return;
    }

    /* FIXME: do we need some special handling of ENOENT */

    state->dp_error = DP_ERR_OK;
    tevent_req_done(req);
}

int ipa_get_subdom_acct_recv(struct tevent_req *req, int *dp_error_out)
{
    struct ipa_get_subdom_acct *state = tevent_req_data(req,
                                                struct ipa_get_subdom_acct);

    if (dp_error_out) {
        *dp_error_out = state->dp_error;
    }

    TEVENT_REQ_RETURN_ON_ERROR(req);

    return EOK;
}

/* IPA lookup for server mode. Directly to AD. */
struct ipa_get_ad_acct_state {
    int dp_error;
    struct tevent_context *ev;
    struct ipa_id_ctx *ipa_ctx;
    struct be_req *be_req;
    struct be_acct_req *ar;
    struct sss_domain_info *user_dom;
};

static void ipa_get_ad_acct_ad_part_done(struct tevent_req *subreq);
static void ipa_get_ad_acct_done(struct tevent_req *subreq);
static struct ad_id_ctx *ipa_get_ad_id_ctx(struct ipa_id_ctx *ipa_ctx,
                                           struct sss_domain_info *dom);

struct tevent_req *
ipa_get_ad_acct_send(TALLOC_CTX *mem_ctx,
                     struct tevent_context *ev,
                     struct ipa_id_ctx *ipa_ctx,
                     struct be_req *be_req,
                     struct be_acct_req *ar)
{
    errno_t ret;
    struct tevent_req *req;
    struct tevent_req *subreq;
    struct ipa_get_ad_acct_state *state;
    struct sdap_domain *sdom;
    struct sdap_id_conn_ctx **clist;
    struct sdap_id_ctx *sdap_id_ctx;;
    struct ad_id_ctx *ad_id_ctx;

    req = tevent_req_create(mem_ctx, &state, struct ipa_get_ad_acct_state);
    if (req == NULL) return NULL;

    state->dp_error = -1;
    state->ev = ev;
    state->ipa_ctx = ipa_ctx;
    state->be_req = be_req;
    state->ar = ar;

    /* This can only be a subdomain request, verify subdomain */
    state->user_dom = find_subdomain_by_name(ipa_ctx->sdap_id_ctx->be->domain,
                                             ar->domain, true);
    if (state->user_dom == NULL) {
        ret = EINVAL;
        goto fail;
    }

    /* Let's see if this subdomain has a ad_id_ctx */
    ad_id_ctx = ipa_get_ad_id_ctx(ipa_ctx, state->user_dom);
    if (ad_id_ctx == NULL) {
        ret = EINVAL;
        goto fail;
    }
    sdap_id_ctx = ad_id_ctx->sdap_id_ctx;

    /* Currently only LDAP port for AD is used because POSIX
     * attributes are not replicated to GC by default
     */
    clist = talloc_zero_array(req, struct sdap_id_conn_ctx *, 2);
    if (clist == NULL) {
        ret = ENOMEM;
        goto fail;
    }
    clist[0] = ad_id_ctx->ldap_ctx;
    clist[1] = NULL;

    /* Now we already need ad_id_ctx in particular sdap_id_conn_ctx */
    sdom = sdap_domain_get(sdap_id_ctx->opts, state->user_dom);
    if (sdom == NULL) {
        ret = EIO;
        goto fail;
    }

    subreq = ad_handle_acct_info_send(req, be_req, ar, sdap_id_ctx,
                                      sdom, clist);
    if (subreq == NULL) {
        ret = ENOMEM;
        goto fail;
    }
    tevent_req_set_callback(subreq, ipa_get_ad_acct_ad_part_done, req);
    return req;

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

static struct ad_id_ctx *
ipa_get_ad_id_ctx(struct ipa_id_ctx *ipa_ctx,
                  struct sss_domain_info *dom)
{
    struct ipa_ad_server_ctx *iter;

    DLIST_FOR_EACH(iter, ipa_ctx->server_mode->trusts) {
        if (iter->dom == dom) break;
    }

    return (iter) ? iter->ad_id_ctx : NULL;
}

static void
ipa_get_ad_acct_ad_part_done(struct tevent_req *subreq)
{
    struct tevent_req *req = tevent_req_callback_data(subreq,
                                                struct tevent_req);
    struct ipa_get_ad_acct_state *state = tevent_req_data(req,
                                                struct ipa_get_ad_acct_state);
    errno_t ret;

    ret = ad_handle_acct_info_recv(subreq, &state->dp_error, NULL);
    talloc_zfree(subreq);
    if (ret != EOK) {
        DEBUG(SSSDBG_OP_FAILURE, ("AD lookup failed: %d\n", ret));
        tevent_req_error(req, ret);
        return;
    }

    if ((state->ar->entry_type & BE_REQ_TYPE_MASK) != BE_REQ_INITGROUPS) {
        tevent_req_done(req);
        return;
    }

    /* For initgroups request we have to check IPA group memberships of AD
     * users. */
    subreq = ipa_get_ad_memberships_send(state, state->ev, state->ar,
                                         state->ipa_ctx->server_mode,
                                         state->user_dom,
                                         state->ipa_ctx->sdap_id_ctx,
                                         state->ipa_ctx->server_mode->realm);
    if (subreq == NULL) {
        ret = ENOMEM;
        goto fail;
    }
    tevent_req_set_callback(subreq, ipa_get_ad_acct_done, req);

    return;

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

static void
ipa_get_ad_acct_done(struct tevent_req *subreq)
{
    struct tevent_req *req = tevent_req_callback_data(subreq,
                                                struct tevent_req);
    struct ipa_get_ad_acct_state *state = tevent_req_data(req,
                                                struct ipa_get_ad_acct_state);
    errno_t ret;

    ret = ipa_get_ad_memberships_recv(subreq, &state->dp_error);
    talloc_zfree(subreq);
    if (ret != EOK) {
        DEBUG(SSSDBG_OP_FAILURE, ("IPA external groups lookup failed: %d\n",
                                  ret));
        tevent_req_error(req, ret);
        return;
    }

    tevent_req_done(req);
}

errno_t
ipa_get_ad_acct_recv(struct tevent_req *req, int *dp_error_out)
{
    struct ipa_get_ad_acct_state *state = tevent_req_data(req,
                                                struct ipa_get_ad_acct_state);

    if (dp_error_out) {
        *dp_error_out = state->dp_error;
    }

    TEVENT_REQ_RETURN_ON_ERROR(req);

    return EOK;
}