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
|
/*
* Copyright (c) 1997 - 2007 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/* $Id$ */
#ifndef __HDB_H__
#define __HDB_H__
#include <krb5.h>
#include <hdb_err.h>
#include <heim_asn1.h>
#include <hdb_asn1.h>
struct hdb_dbinfo;
enum hdb_lockop{ HDB_RLOCK, HDB_WLOCK };
/* flags for various functions */
#define HDB_F_DECRYPT 1 /* decrypt keys */
#define HDB_F_REPLACE 2 /* replace entry */
#define HDB_F_GET_CLIENT 4 /* fetch client */
#define HDB_F_GET_SERVER 8 /* fetch server */
#define HDB_F_GET_KRBTGT 16 /* fetch krbtgt */
#define HDB_F_GET_ANY 28 /* fetch any of client,server,krbtgt */
#define HDB_F_CANON 32 /* want canonicalition */
#define HDB_F_ADMIN_DATA 64 /* want data that kdc don't use */
#define HDB_F_KVNO_SPECIFIED 128 /* we want a particular KVNO */
/* hdb_capability_flags */
#define HDB_CAP_F_HANDLE_ENTERPRISE_PRINCIPAL 1
#define HDB_CAP_F_HANDLE_PASSWORDS 2
#define HDB_CAP_F_PASSWORD_UPDATE_KEYS 4
/* auth status values */
#define HDB_AUTH_SUCCESS 0
#define HDB_AUTH_WRONG_PASSWORD 1
#define HDB_AUTH_INVALID_SIGNATURE 2
/* key usage for master key */
#define HDB_KU_MKEY 0x484442
typedef struct hdb_master_key_data *hdb_master_key;
/**
* hdb_entry_ex is a wrapper structure around the hdb_entry structure
* that allows backends to keep a pointer to the backing store, ie in
* ->hdb_fetch_kvno(), so that we the kadmin/kpasswd backend gets around to
* ->hdb_store(), the backend doesn't need to lookup the entry again.
*/
typedef struct hdb_entry_ex {
void *ctx;
hdb_entry entry;
void (*free_entry)(krb5_context, struct hdb_entry_ex *);
} hdb_entry_ex;
/**
* HDB backend function pointer structure
*
* The HDB structure is what the KDC and kadmind framework uses to
* query the backend database when talking about principals.
*/
typedef struct HDB{
void *hdb_db;
void *hdb_dbc; /** don't use, only for DB3 */
char *hdb_name;
int hdb_master_key_set;
hdb_master_key hdb_master_key;
int hdb_openp;
int hdb_capability_flags;
/**
* Open (or create) the a Kerberos database.
*
* Open (or create) the a Kerberos database that was resolved with
* hdb_create(). The third and fourth flag to the function are the
* same as open(), thus passing O_CREAT will create the data base
* if it doesn't exists.
*
* Then done the caller should call hdb_close(), and to release
* all resources hdb_destroy().
*/
krb5_error_code (*hdb_open)(krb5_context, struct HDB*, int, mode_t);
/**
* Close the database for transaction
*
* Closes the database for further transactions, wont release any
* permanant resources. the database can be ->hdb_open-ed again.
*/
krb5_error_code (*hdb_close)(krb5_context, struct HDB*);
/**
* Free an entry after use.
*/
void (*hdb_free)(krb5_context, struct HDB*, hdb_entry_ex*);
/**
* Fetch an entry from the backend
*
* Fetch an entry from the backend, flags are what type of entry
* should be fetch: client, server, krbtgt.
* knvo (if specified and flags HDB_F_KVNO_SPECIFIED set) is the kvno to get
*/
krb5_error_code (*hdb_fetch_kvno)(krb5_context, struct HDB*,
krb5_const_principal, unsigned, krb5_kvno,
hdb_entry_ex*);
/**
* Store an entry to database
*/
krb5_error_code (*hdb_store)(krb5_context, struct HDB*,
unsigned, hdb_entry_ex*);
/**
* Remove an entry from the database.
*/
krb5_error_code (*hdb_remove)(krb5_context, struct HDB*,
krb5_const_principal);
/**
* As part of iteration, fetch one entry
*/
krb5_error_code (*hdb_firstkey)(krb5_context, struct HDB*,
unsigned, hdb_entry_ex*);
/**
* As part of iteration, fetch next entry
*/
krb5_error_code (*hdb_nextkey)(krb5_context, struct HDB*,
unsigned, hdb_entry_ex*);
/**
* Lock database
*
* A lock can only be held by one consumers. Transaction can still
* happen on the database while the lock is held, so the entry is
* only useful for syncroning creation of the database and renaming of the database.
*/
krb5_error_code (*hdb_lock)(krb5_context, struct HDB*, int);
/**
* Unlock database
*/
krb5_error_code (*hdb_unlock)(krb5_context, struct HDB*);
/**
* Rename the data base.
*
* Assume that the database is not hdb_open'ed and not locked.
*/
krb5_error_code (*hdb_rename)(krb5_context, struct HDB*, const char*);
/**
* Get an hdb_entry from a classical DB backend
*
* If the database is a classical DB (ie BDB, NDBM, GDBM, etc)
* backend, this function will take a principal key (krb5_data)
* and return all data related to principal in the return
* krb5_data. The returned encoded entry is of type hdb_entry or
* hdb_entry_alias.
*/
krb5_error_code (*hdb__get)(krb5_context, struct HDB*,
krb5_data, krb5_data*);
/**
* Store an hdb_entry from a classical DB backend
*
* Same discussion as in @ref HDB::hdb__get
*/
krb5_error_code (*hdb__put)(krb5_context, struct HDB*, int,
krb5_data, krb5_data);
/**
* Delete and hdb_entry from a classical DB backend
*
* Same discussion as in @ref HDB::hdb__get
*/
krb5_error_code (*hdb__del)(krb5_context, struct HDB*, krb5_data);
/**
* Destroy the handle to the database.
*
* Destroy the handle to the database, deallocate all memory and
* related resources. Does not remove any permanent data. Its the
* logical reverse of hdb_create() function that is the entry
* point for the module.
*/
krb5_error_code (*hdb_destroy)(krb5_context, struct HDB*);
/**
* Get the list of realms this backend handles.
* This call is optional to support. The returned realms are used
* for announcing the realms over bonjour. Free returned array
* with krb5_free_host_realm().
*/
krb5_error_code (*hdb_get_realms)(krb5_context, struct HDB *, krb5_realm **);
/**
* Change password.
*
* Will update keys for the entry when given password. The new
* keys must be written into the entry and will then later be
* ->hdb_store() into the database. The backend will still perform
* all other operations, increasing the kvno, and update
* modification timestamp.
*
* The backend needs to call _kadm5_set_keys() and perform password
* quality checks.
*/
krb5_error_code (*hdb_password)(krb5_context, struct HDB*, hdb_entry_ex*, const char *, int);
/**
* Auth feedback
*
* This is a feedback call that allows backends that provides
* lockout functionality to register failure and/or successes.
*
* In case the entry is locked out, the backend should set the
* hdb_entry.flags.locked-out flag.
*/
krb5_error_code (*hdb_auth_status)(krb5_context, struct HDB *, hdb_entry_ex *, int);
/**
* Check if delegation is allowed.
*/
krb5_error_code (*hdb_check_constrained_delegation)(krb5_context, struct HDB *, hdb_entry_ex *, krb5_const_principal);
/**
* Check if this name is an alias for the supplied client for PKINIT userPrinicpalName logins
*/
krb5_error_code (*hdb_check_pkinit_ms_upn_match)(krb5_context, struct HDB *, hdb_entry_ex *, krb5_const_principal);
/**
* Check if s4u2self is allowed from this client to this server
*/
krb5_error_code (*hdb_check_s4u2self)(krb5_context, struct HDB *, hdb_entry_ex *, krb5_const_principal);
}HDB;
#define HDB_INTERFACE_VERSION 7
struct hdb_so_method {
int version;
const char *prefix;
krb5_error_code (*create)(krb5_context, HDB **, const char *filename);
};
typedef krb5_error_code (*hdb_foreach_func_t)(krb5_context, HDB*,
hdb_entry_ex*, void*);
extern krb5_kt_ops hdb_kt_ops;
struct hdb_method {
int interface_version;
const char *prefix;
krb5_error_code (*create)(krb5_context, HDB **, const char *filename);
};
extern const int hdb_interface_version;
#include <hdb-protos.h>
#endif /* __HDB_H__ */
|
