s4:kdc/*.c - minimise includes
[amitay/samba.git] / source4 / kdc / hdb-samba4.c
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
39 static krb5_error_code hdb_samba4_open(krb5_context context, HDB *db, int flags, mode_t mode)
40 {
41         if (db->hdb_master_key_set) {
42                 krb5_error_code ret = HDB_ERR_NOENTRY;
43                 krb5_warnx(context, "hdb_samba4_open: use of a master key incompatible with LDB\n");
44                 krb5_set_error_message(context, ret, "hdb_samba4_open: use of a master key incompatible with LDB\n");
45                 return ret;
46         }
47
48         return 0;
49 }
50
51 static krb5_error_code hdb_samba4_close(krb5_context context, HDB *db)
52 {
53         return 0;
54 }
55
56 static krb5_error_code hdb_samba4_lock(krb5_context context, HDB *db, int operation)
57 {
58         return 0;
59 }
60
61 static krb5_error_code hdb_samba4_unlock(krb5_context context, HDB *db)
62 {
63         return 0;
64 }
65
66 static krb5_error_code hdb_samba4_rename(krb5_context context, HDB *db, const char *new_name)
67 {
68         return HDB_ERR_DB_INUSE;
69 }
70
71 static krb5_error_code hdb_samba4_store(krb5_context context, HDB *db, unsigned flags, hdb_entry_ex *entry)
72 {
73         return HDB_ERR_DB_INUSE;
74 }
75
76 static krb5_error_code hdb_samba4_remove(krb5_context context, HDB *db, krb5_const_principal principal)
77 {
78         return HDB_ERR_DB_INUSE;
79 }
80
81 static krb5_error_code hdb_samba4_fetch_kvno(krb5_context context, HDB *db,
82                                              krb5_const_principal principal,
83                                              unsigned flags,
84                                              krb5_kvno kvno,
85                                              hdb_entry_ex *entry_ex)
86 {
87         struct samba_kdc_db_context *kdc_db_ctx;
88
89         kdc_db_ctx = talloc_get_type_abort(db->hdb_db,
90                                            struct samba_kdc_db_context);
91
92         return samba_kdc_fetch(context, kdc_db_ctx, principal, flags, kvno, entry_ex);
93 }
94
95 static krb5_error_code hdb_samba4_firstkey(krb5_context context, HDB *db, unsigned flags,
96                                         hdb_entry_ex *entry)
97 {
98         struct samba_kdc_db_context *kdc_db_ctx;
99
100         kdc_db_ctx = talloc_get_type_abort(db->hdb_db,
101                                            struct samba_kdc_db_context);
102
103         return samba_kdc_firstkey(context, kdc_db_ctx, entry);
104 }
105
106 static krb5_error_code hdb_samba4_nextkey(krb5_context context, HDB *db, unsigned flags,
107                                    hdb_entry_ex *entry)
108 {
109         struct samba_kdc_db_context *kdc_db_ctx;
110
111         kdc_db_ctx = talloc_get_type_abort(db->hdb_db,
112                                            struct samba_kdc_db_context);
113
114         return samba_kdc_nextkey(context, kdc_db_ctx, entry);
115 }
116
117 static krb5_error_code hdb_samba4_destroy(krb5_context context, HDB *db)
118 {
119         talloc_free(db);
120         return 0;
121 }
122
123 static krb5_error_code
124 hdb_samba4_check_identical_client_and_server(krb5_context context, HDB *db,
125                                         hdb_entry_ex *entry,
126                                         krb5_const_principal target_principal)
127 {
128         struct samba_kdc_db_context *kdc_db_ctx;
129
130         kdc_db_ctx = talloc_get_type_abort(db->hdb_db,
131                                            struct samba_kdc_db_context);
132
133         return samba_kdc_check_identical_client_and_server(context, kdc_db_ctx,
134                                                            entry,
135                                                            target_principal);
136 }
137
138 static krb5_error_code
139 hdb_samba4_check_pkinit_ms_upn_match(krb5_context context, HDB *db,
140                                      hdb_entry_ex *entry,
141                                      krb5_const_principal certificate_principal)
142 {
143         struct samba_kdc_db_context *kdc_db_ctx;
144
145         kdc_db_ctx = talloc_get_type_abort(db->hdb_db,
146                                            struct samba_kdc_db_context);
147
148         return samba_kdc_check_pkinit_ms_upn_match(context, kdc_db_ctx,
149                                                    entry,
150                                                    certificate_principal);
151 }
152
153 /* This interface is to be called by the KDC and libnet_keytab_dump,
154  * which is expecting Samba calling conventions.
155  * It is also called by a wrapper (hdb_samba4_create) from the
156  * kpasswdd -> krb5 -> keytab_hdb -> hdb code */
157
158 NTSTATUS hdb_samba4_create_kdc(struct samba_kdc_base_context *base_ctx,
159                                krb5_context context, struct HDB **db)
160 {
161         struct samba_kdc_db_context *kdc_db_ctx;
162         NTSTATUS nt_status;
163
164         *db = talloc(base_ctx, HDB);
165         if (!*db) {
166                 krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
167                 return NT_STATUS_NO_MEMORY;
168         }
169
170         (*db)->hdb_master_key_set = 0;
171         (*db)->hdb_db = NULL;
172         (*db)->hdb_capability_flags = 0;
173
174         nt_status = samba_kdc_setup_db_ctx(*db, base_ctx, &kdc_db_ctx);
175         if (!NT_STATUS_IS_OK(nt_status)) {
176                 talloc_free(*db);
177                 return nt_status;
178         }
179         (*db)->hdb_db = kdc_db_ctx;
180
181         (*db)->hdb_dbc = NULL;
182         (*db)->hdb_open = hdb_samba4_open;
183         (*db)->hdb_close = hdb_samba4_close;
184         (*db)->hdb_fetch_kvno = hdb_samba4_fetch_kvno;
185         (*db)->hdb_store = hdb_samba4_store;
186         (*db)->hdb_remove = hdb_samba4_remove;
187         (*db)->hdb_firstkey = hdb_samba4_firstkey;
188         (*db)->hdb_nextkey = hdb_samba4_nextkey;
189         (*db)->hdb_lock = hdb_samba4_lock;
190         (*db)->hdb_unlock = hdb_samba4_unlock;
191         (*db)->hdb_rename = hdb_samba4_rename;
192         /* we don't implement these, as we are not a lockable database */
193         (*db)->hdb__get = NULL;
194         (*db)->hdb__put = NULL;
195         /* kadmin should not be used for deletes - use other tools instead */
196         (*db)->hdb__del = NULL;
197         (*db)->hdb_destroy = hdb_samba4_destroy;
198
199         (*db)->hdb_auth_status = NULL;
200         (*db)->hdb_check_constrained_delegation = hdb_samba4_check_identical_client_and_server;
201         (*db)->hdb_check_pkinit_ms_upn_match = hdb_samba4_check_pkinit_ms_upn_match;
202         (*db)->hdb_check_s4u2self = hdb_samba4_check_identical_client_and_server;
203
204         return NT_STATUS_OK;
205 }
206
207 static krb5_error_code hdb_samba4_create(krb5_context context, struct HDB **db, const char *arg)
208 {
209         NTSTATUS nt_status;
210         void *ptr;
211         struct samba_kdc_base_context *base_ctx;
212
213         if (sscanf(arg, "&%p", &ptr) != 1) {
214                 return EINVAL;
215         }
216         base_ctx = talloc_get_type_abort(ptr, struct samba_kdc_base_context);
217         /* The global kdc_mem_ctx and kdc_lp_ctx, Disgusting, ugly hack, but it means one less private hook */
218         nt_status = hdb_samba4_create_kdc(base_ctx, context, db);
219
220         if (NT_STATUS_IS_OK(nt_status)) {
221                 return 0;
222         }
223         return EINVAL;
224 }
225
226 /* Only used in the hdb-backed keytab code
227  * for a keytab of 'samba4&<address>', to find
228  * kpasswd's key in the main DB, and to
229  * copy all the keys into a file (libnet_keytab_export)
230  *
231  * The <address> is the string form of a pointer to a talloced struct hdb_samba_context
232  */
233 struct hdb_method hdb_samba4 = {
234         .interface_version = HDB_INTERFACE_VERSION,
235         .prefix = "samba4",
236         .create = hdb_samba4_create
237 };