summaryrefslogtreecommitdiffstats
path: root/src/providers/ipa/ipa_idmap.c
blob: 2f141f8eacc63c6a8c8745ece033c412d5645faf (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
/*
    SSSD

    Authors:
        Sumit Bose <sbose@redhat.com>

    Copyright (C) 2013 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 "util/util.h"
#include "providers/ldap/sdap_idmap.h"
#include "providers/ipa/ipa_common.h"
#include "util/util_sss_idmap.h"

errno_t ipa_idmap_find_new_domain(struct sdap_idmap_ctx *idmap_ctx,
                                  const char *dom_name,
                                  const char *dom_sid_str)
{
    int ret;
    size_t range_count;
    struct range_info **range_list;
    TALLOC_CTX *tmp_ctx;
    size_t c;
    enum idmap_error_code err;
    struct range_info *r;
    struct sss_idmap_range range;
    uint32_t rid;
    bool external_mapping;
    char *name;
    char *sid;

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

    ret = sysdb_get_ranges(tmp_ctx, idmap_ctx->id_ctx->be->domain->sysdb,
                           &range_count, &range_list);
    if (ret != EOK) {
        DEBUG(SSSDBG_OP_FAILURE, ("sysdb_get_ranges failed.\n"));
        goto done;
    }

    for (c = 0; c < range_count; c++) {
        r = range_list[c];

        if (r->range_type == NULL) {
            /* Older IPA servers might not have the range_type attribute, but
             * only support local ranges and trusts with algorithmic mapping. */

            if (r->trusted_dom_sid == NULL && r->secondary_base_rid != 0) {
                /* local IPA domain */
                rid = 0;
                external_mapping = true;
                name = idmap_ctx->id_ctx->be->domain->name;
                sid = NULL;
            } else if (r->trusted_dom_sid != NULL
                    && r->secondary_base_rid == 0) {
                /* trusted domain */
                rid = r->base_rid;
                external_mapping = false;
                name = r->trusted_dom_sid;
                sid = r->trusted_dom_sid;
            } else {
                DEBUG(SSSDBG_MINOR_FAILURE, ("Cannot determine range type, " \
                                             "skipping id ange [%s].\n",
                                             r->name));
                continue;
            }
        } else {
            if (strcmp(r->range_type, IPA_RANGE_LOCAL) == 0) {
                rid = 0;
                external_mapping = true;
                name = idmap_ctx->id_ctx->be->domain->name;
                sid = NULL;
            } else if (strcmp(r->range_type, IPA_RANGE_AD_TRUST_POSIX) == 0) {
                rid = 0;
                external_mapping = true;
                name = r->trusted_dom_sid;
                sid = r->trusted_dom_sid;
            } else if (strcmp(r->range_type, IPA_RANGE_AD_TRUST) == 0) {
                rid = r->base_rid;
                external_mapping = false;
                name = r->trusted_dom_sid;
                sid = r->trusted_dom_sid;
            } else {
                DEBUG(SSSDBG_MINOR_FAILURE, ("Range type [%s] not supported, " \
                                             "skipping id range [%s].\n",
                                             r->range_type, r->name));
                continue;
            }
        }

        range.min = r->base_id;
        range.max = r->base_id + r->id_range_size -1;
        err = sss_idmap_add_domain_ex(idmap_ctx->map, name, sid, &range,
                                      r->name, rid, external_mapping);
        if (err != IDMAP_SUCCESS && err != IDMAP_COLLISION) {
            DEBUG(SSSDBG_CRIT_FAILURE, ("Could not add range [%s] to ID map\n",
                                        r->name));
            ret = EIO;
            goto done;
        }
    }

    ret = EOK;

done:
    talloc_free(tmp_ctx);

    return ret;
}

errno_t ipa_idmap_init(TALLOC_CTX *mem_ctx,
                       struct sdap_id_ctx *id_ctx,
                       struct sdap_idmap_ctx **_idmap_ctx)
{
    errno_t ret;
    TALLOC_CTX *tmp_ctx;
    enum idmap_error_code err;
    size_t c;
    struct sdap_idmap_ctx *idmap_ctx = NULL;
    struct sysdb_ctx *sysdb = id_ctx->be->domain->sysdb;
    size_t range_count;
    struct range_info **range_list;
    struct range_info *r;
    struct sss_idmap_range range;
    uint32_t rid;
    bool external_mapping;
    char *name;
    char *sid;

    tmp_ctx = talloc_new(NULL);
    if (!tmp_ctx) return ENOMEM;

    idmap_ctx = talloc_zero(tmp_ctx, struct sdap_idmap_ctx);
    if (!idmap_ctx) {
        ret = ENOMEM;
        goto done;
    }
    idmap_ctx->id_ctx = id_ctx;
    idmap_ctx->find_new_domain = ipa_idmap_find_new_domain;

    /* Initialize the map */
    err = sss_idmap_init(sss_idmap_talloc, idmap_ctx,
                         sss_idmap_talloc_free,
                         &idmap_ctx->map);
    if (err != IDMAP_SUCCESS) {
        DEBUG(SSSDBG_CRIT_FAILURE,
              ("Could not initialize the ID map: [%s]\n",
               idmap_error_string(err)));
        if (err == IDMAP_OUT_OF_MEMORY) {
            ret = ENOMEM;
        } else {
            ret = EINVAL;
        }
        goto done;
    }


    /* Read in any existing mappings from the cache */
    ret = sysdb_get_ranges(tmp_ctx, sysdb, &range_count, &range_list);
    if (ret != EOK && ret != ENOENT) {
        DEBUG(SSSDBG_FATAL_FAILURE,
              ("Could not read ranges from the cache: [%s]\n",
               strerror(ret)));
        goto done;
    }

    DEBUG(SSSDBG_CONF_SETTINGS,
          ("Initializing [%zu] domains for ID-mapping\n", range_count));

    for (c = 0; c < range_count; c++) {

        r = range_list[c];

        if (r->range_type == NULL) {
            /* Older IPA servers might not have the range_type attribute, but
             * only support local ranges and trusts with algorithmic mapping. */

            if (r->trusted_dom_sid == NULL && r->secondary_base_rid != 0) {
                /* local IPA domain */
                rid = 0;
                external_mapping = true;
                sid = NULL;
                name = id_ctx->be->domain->name;
            } else if (r->trusted_dom_sid != NULL
                    && r->secondary_base_rid == 0) {
                /* trusted domain */
                rid = r->base_rid;
                external_mapping = false;
                sid = r->trusted_dom_sid;
                name = sid;
            } else {
                DEBUG(SSSDBG_MINOR_FAILURE, ("Cannot determine range type, " \
                                             "skipping id ange [%s].\n",
                                             r->name));
                continue;
            }
        } else {
            if (strcmp(r->range_type, IPA_RANGE_LOCAL) == 0) {
                rid = 0;
                external_mapping = true;
                sid = NULL;
                name = id_ctx->be->domain->name;
            } else if (strcmp(r->range_type, IPA_RANGE_AD_TRUST_POSIX) == 0) {
                rid = 0;
                external_mapping = true;
                sid = r->trusted_dom_sid;
                name = sid;
            } else if (strcmp(r->range_type, IPA_RANGE_AD_TRUST) == 0) {
                rid = r->base_rid;
                external_mapping = false;
                sid = r->trusted_dom_sid;
                name = sid;
            } else {
                DEBUG(SSSDBG_MINOR_FAILURE, ("Range type [%s] not supported, " \
                                             "skipping id range [%s].\n",
                                             r->range_type, r->name));
                continue;
            }
        }

        range.min = r->base_id;
        range.max = r->base_id + r->id_range_size -1;
        err = sss_idmap_add_domain_ex(idmap_ctx->map, name, sid, &range,
                                      r->name, rid, external_mapping);
        if (err != IDMAP_SUCCESS) {
            DEBUG(SSSDBG_CRIT_FAILURE, ("Could not add range [%s] to ID map\n",
                                        r->name));
            ret = EIO;
            goto done;
        }
    }

    *_idmap_ctx = talloc_steal(mem_ctx, idmap_ctx);
    ret = EOK;

done:
    talloc_free(tmp_ctx);
    return ret;
}