source: vendor/current/source4/kdc/hdb-samba4.c

Last change on this file was 988, checked in by Silvan Scherrer, 9 years ago

Samba Server: update vendor to version 4.4.3
File size: 10.3 KB
Line 
1/*
2 * Copyright (c) 1999-2001, 2003, PADL Software Pty Ltd.
3 * Copyright (c) 2004-2009, Andrew Bartlett <abartlet@samba.org>.
4 * Copyright (c) 2004, Stefan Metzmacher <metze@samba.org>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 *
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 *
18 * 3. Neither the name of PADL Software nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY PADL SOFTWARE AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL PADL SOFTWARE OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35#include "includes.h"
36#include "kdc/kdc-glue.h"
37#include "kdc/db-glue.h"
38#include "auth/auth_sam.h"
39#include <ldb.h>
40#include "sdb.h"
41#include "sdb_hdb.h"
42
43static krb5_error_code hdb_samba4_open(krb5_context context, HDB *db, int flags, mode_t mode)
44{
45 if (db->hdb_master_key_set) {
46 krb5_error_code ret = HDB_ERR_NOENTRY;
47 krb5_warnx(context, "hdb_samba4_open: use of a master key incompatible with LDB\n");
48 krb5_set_error_message(context, ret, "hdb_samba4_open: use of a master key incompatible with LDB\n");
49 return ret;
50 }
51
52 return 0;
53}
54
55static krb5_error_code hdb_samba4_close(krb5_context context, HDB *db)
56{
57 return 0;
58}
59
60static krb5_error_code hdb_samba4_lock(krb5_context context, HDB *db, int operation)
61{
62 return 0;
63}
64
65static krb5_error_code hdb_samba4_unlock(krb5_context context, HDB *db)
66{
67 return 0;
68}
69
70static krb5_error_code hdb_samba4_rename(krb5_context context, HDB *db, const char *new_name)
71{
72 return HDB_ERR_DB_INUSE;
73}
74
75static krb5_error_code hdb_samba4_store(krb5_context context, HDB *db, unsigned flags, hdb_entry_ex *entry)
76{
77 return HDB_ERR_DB_INUSE;
78}
79
80static krb5_error_code hdb_samba4_remove(krb5_context context, HDB *db, krb5_const_principal principal)
81{
82 return HDB_ERR_DB_INUSE;
83}
84
85static krb5_error_code hdb_samba4_fetch_kvno(krb5_context context, HDB *db,
86 krb5_const_principal principal,
87 unsigned flags,
88 krb5_kvno kvno,
89 hdb_entry_ex *entry_ex)
90{
91 struct samba_kdc_db_context *kdc_db_ctx;
92 struct sdb_entry_ex sdb_entry_ex = {};
93 krb5_error_code code, ret;
94
95 kdc_db_ctx = talloc_get_type_abort(db->hdb_db,
96 struct samba_kdc_db_context);
97
98 ret = samba_kdc_fetch(context,
99 kdc_db_ctx,
100 principal,
101 flags,
102 kvno,
103 &sdb_entry_ex);
104 switch (ret) {
105 case 0:
106 code = 0;
107 break;
108 case SDB_ERR_WRONG_REALM:
109 /*
110 * If SDB_ERR_WRONG_REALM is returned we need to process the
111 * sdb_entry to fill the principal in the HDB entry.
112 */
113 code = HDB_ERR_WRONG_REALM;
114 break;
115 case SDB_ERR_NOENTRY:
116 return HDB_ERR_NOENTRY;
117 default:
118 return HDB_ERR_NOT_FOUND_HERE;
119 }
120
121 ret = sdb_entry_ex_to_hdb_entry_ex(context, &sdb_entry_ex, entry_ex);
122 sdb_free_entry(&sdb_entry_ex);
123
124 if (code != 0 && ret != 0) {
125 code = ret;
126 }
127
128 return code;
129}
130
131static krb5_error_code hdb_samba4_firstkey(krb5_context context, HDB *db, unsigned flags,
132 hdb_entry_ex *entry)
133{
134 struct samba_kdc_db_context *kdc_db_ctx;
135 struct sdb_entry_ex sdb_entry_ex = {};
136 krb5_error_code ret;
137
138 kdc_db_ctx = talloc_get_type_abort(db->hdb_db,
139 struct samba_kdc_db_context);
140
141 ret = samba_kdc_firstkey(context, kdc_db_ctx, &sdb_entry_ex);
142 switch (ret) {
143 case 0:
144 break;
145 case SDB_ERR_WRONG_REALM:
146 return HDB_ERR_WRONG_REALM;
147 case SDB_ERR_NOENTRY:
148 return HDB_ERR_NOENTRY;
149 default:
150 return HDB_ERR_NOT_FOUND_HERE;
151 }
152
153 ret = sdb_entry_ex_to_hdb_entry_ex(context, &sdb_entry_ex, entry);
154 sdb_free_entry(&sdb_entry_ex);
155 return ret;
156}
157
158static krb5_error_code hdb_samba4_nextkey(krb5_context context, HDB *db, unsigned flags,
159 hdb_entry_ex *entry)
160{
161 struct samba_kdc_db_context *kdc_db_ctx;
162 struct sdb_entry_ex sdb_entry_ex = {};
163 krb5_error_code ret;
164
165 kdc_db_ctx = talloc_get_type_abort(db->hdb_db,
166 struct samba_kdc_db_context);
167
168 ret = samba_kdc_nextkey(context, kdc_db_ctx, &sdb_entry_ex);
169 switch (ret) {
170 case 0:
171 break;
172 case SDB_ERR_WRONG_REALM:
173 return HDB_ERR_WRONG_REALM;
174 case SDB_ERR_NOENTRY:
175 return HDB_ERR_NOENTRY;
176 default:
177 return HDB_ERR_NOT_FOUND_HERE;
178 }
179
180 ret = sdb_entry_ex_to_hdb_entry_ex(context, &sdb_entry_ex, entry);
181 sdb_free_entry(&sdb_entry_ex);
182 return ret;
183}
184
185static krb5_error_code hdb_samba4_destroy(krb5_context context, HDB *db)
186{
187 talloc_free(db);
188 return 0;
189}
190
191static krb5_error_code
192hdb_samba4_check_constrained_delegation(krb5_context context, HDB *db,
193 hdb_entry_ex *entry,
194 krb5_const_principal target_principal)
195{
196 struct samba_kdc_db_context *kdc_db_ctx;
197 struct samba_kdc_entry *skdc_entry;
198 krb5_error_code ret;
199
200 kdc_db_ctx = talloc_get_type_abort(db->hdb_db,
201 struct samba_kdc_db_context);
202 skdc_entry = talloc_get_type_abort(entry->ctx,
203 struct samba_kdc_entry);
204
205 ret = samba_kdc_check_s4u2proxy(context, kdc_db_ctx,
206 skdc_entry,
207 target_principal);
208 switch (ret) {
209 case 0:
210 break;
211 case SDB_ERR_WRONG_REALM:
212 ret = HDB_ERR_WRONG_REALM;
213 break;
214 case SDB_ERR_NOENTRY:
215 ret = HDB_ERR_NOENTRY;
216 break;
217 default:
218 ret = HDB_ERR_NOT_FOUND_HERE;
219 break;
220 }
221
222 return ret;
223}
224
225static krb5_error_code
226hdb_samba4_check_pkinit_ms_upn_match(krb5_context context, HDB *db,
227 hdb_entry_ex *entry,
228 krb5_const_principal certificate_principal)
229{
230 struct samba_kdc_db_context *kdc_db_ctx;
231 struct samba_kdc_entry *skdc_entry;
232 krb5_error_code ret;
233
234 kdc_db_ctx = talloc_get_type_abort(db->hdb_db,
235 struct samba_kdc_db_context);
236 skdc_entry = talloc_get_type_abort(entry->ctx,
237 struct samba_kdc_entry);
238
239 ret = samba_kdc_check_pkinit_ms_upn_match(context, kdc_db_ctx,
240 skdc_entry,
241 certificate_principal);
242 switch (ret) {
243 case 0:
244 break;
245 case SDB_ERR_WRONG_REALM:
246 ret = HDB_ERR_WRONG_REALM;
247 break;
248 case SDB_ERR_NOENTRY:
249 ret = HDB_ERR_NOENTRY;
250 break;
251 default:
252 ret = HDB_ERR_NOT_FOUND_HERE;
253 break;
254 }
255
256 return ret;
257}
258
259static krb5_error_code
260hdb_samba4_check_s4u2self(krb5_context context, HDB *db,
261 hdb_entry_ex *entry,
262 krb5_const_principal target_principal)
263{
264 struct samba_kdc_db_context *kdc_db_ctx;
265 struct samba_kdc_entry *skdc_entry;
266 krb5_error_code ret;
267
268 kdc_db_ctx = talloc_get_type_abort(db->hdb_db,
269 struct samba_kdc_db_context);
270 skdc_entry = talloc_get_type_abort(entry->ctx,
271 struct samba_kdc_entry);
272
273 ret = samba_kdc_check_s4u2self(context, kdc_db_ctx,
274 skdc_entry,
275 target_principal);
276 switch (ret) {
277 case 0:
278 break;
279 case SDB_ERR_WRONG_REALM:
280 ret = HDB_ERR_WRONG_REALM;
281 break;
282 case SDB_ERR_NOENTRY:
283 ret = HDB_ERR_NOENTRY;
284 break;
285 default:
286 ret = HDB_ERR_NOT_FOUND_HERE;
287 break;
288 }
289
290 return ret;
291}
292
293static krb5_error_code hdb_samba4_auth_status(krb5_context context, HDB *db,
294 hdb_entry_ex *entry,
295 int hdb_auth_status)
296{
297 struct samba_kdc_db_context *kdc_db_ctx = talloc_get_type_abort(db->hdb_db,
298 struct samba_kdc_db_context);
299 struct samba_kdc_entry *p = talloc_get_type(entry->ctx, struct samba_kdc_entry);
300
301 struct ldb_dn *domain_dn = ldb_get_default_basedn(kdc_db_ctx->samdb);
302
303 if (hdb_auth_status == HDB_AUTH_WRONG_PASSWORD) {
304 authsam_update_bad_pwd_count(kdc_db_ctx->samdb, p->msg, domain_dn);
305 } else if (hdb_auth_status == HDB_AUTH_SUCCESS) {
306 authsam_logon_success_accounting(kdc_db_ctx->samdb, p->msg,
307 domain_dn, true);
308 }
309 return 0;
310}
311
312/* This interface is to be called by the KDC and libnet_keytab_dump,
313 * which is expecting Samba calling conventions.
314 * It is also called by a wrapper (hdb_samba4_create) from the
315 * kpasswdd -> krb5 -> keytab_hdb -> hdb code */
316
317NTSTATUS hdb_samba4_create_kdc(struct samba_kdc_base_context *base_ctx,
318 krb5_context context, struct HDB **db)
319{
320 struct samba_kdc_db_context *kdc_db_ctx;
321 NTSTATUS nt_status;
322
323 if (hdb_interface_version != HDB_INTERFACE_VERSION) {
324 krb5_set_error_message(context, EINVAL, "Heimdal HDB interface version mismatch between build-time and run-time libraries!");
325 return NT_STATUS_ERROR_DS_INCOMPATIBLE_VERSION;
326 }
327
328 *db = talloc(base_ctx, HDB);
329 if (!*db) {
330 krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
331 return NT_STATUS_NO_MEMORY;
332 }
333
334 (*db)->hdb_master_key_set = 0;
335 (*db)->hdb_db = NULL;
336 (*db)->hdb_capability_flags = HDB_CAP_F_HANDLE_ENTERPRISE_PRINCIPAL;
337
338 nt_status = samba_kdc_setup_db_ctx(*db, base_ctx, &kdc_db_ctx);
339 if (!NT_STATUS_IS_OK(nt_status)) {
340 talloc_free(*db);
341 return nt_status;
342 }
343 (*db)->hdb_db = kdc_db_ctx;
344
345 (*db)->hdb_dbc = NULL;
346 (*db)->hdb_open = hdb_samba4_open;
347 (*db)->hdb_close = hdb_samba4_close;
348 (*db)->hdb_fetch_kvno = hdb_samba4_fetch_kvno;
349 (*db)->hdb_store = hdb_samba4_store;
350 (*db)->hdb_remove = hdb_samba4_remove;
351 (*db)->hdb_firstkey = hdb_samba4_firstkey;
352 (*db)->hdb_nextkey = hdb_samba4_nextkey;
353 (*db)->hdb_lock = hdb_samba4_lock;
354 (*db)->hdb_unlock = hdb_samba4_unlock;
355 (*db)->hdb_rename = hdb_samba4_rename;
356 /* we don't implement these, as we are not a lockable database */
357 (*db)->hdb__get = NULL;
358 (*db)->hdb__put = NULL;
359 /* kadmin should not be used for deletes - use other tools instead */
360 (*db)->hdb__del = NULL;
361 (*db)->hdb_destroy = hdb_samba4_destroy;
362
363 (*db)->hdb_auth_status = hdb_samba4_auth_status;
364 (*db)->hdb_check_constrained_delegation = hdb_samba4_check_constrained_delegation;
365 (*db)->hdb_check_pkinit_ms_upn_match = hdb_samba4_check_pkinit_ms_upn_match;
366 (*db)->hdb_check_s4u2self = hdb_samba4_check_s4u2self;
367
368 return NT_STATUS_OK;
369}
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