2 * Copyright (c) 1997 - 2001 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
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11 * notice, this list of conditions and the following disclaimer.
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14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
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18 * may be used to endorse or promote products derived from this software
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21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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36 RCSID("$Id: db3.c,v 1.8 2001/08/09 08:41:48 assar Exp $");
42 static krb5_error_code
43 DB_close(krb5_context context, HDB *db)
46 DBC *dbcp = (DBC*)db->dbc;
54 static krb5_error_code
55 DB_destroy(krb5_context context, HDB *db)
59 ret = hdb_clear_master_key (context, db);
65 static krb5_error_code
66 DB_lock(krb5_context context, HDB *db, int operation)
71 return HDB_ERR_CANT_LOCK_DB;
72 return hdb_lock(fd, operation);
75 static krb5_error_code
76 DB_unlock(krb5_context context, HDB *db)
81 return HDB_ERR_CANT_LOCK_DB;
82 return hdb_unlock(fd);
86 static krb5_error_code
87 DB_seq(krb5_context context, HDB *db,
88 unsigned flags, hdb_entry *entry, int flag)
93 krb5_data key_data, data;
96 memset(&key, 0, sizeof(DBT));
97 memset(&value, 0, sizeof(DBT));
98 if (db->lock(context, db, HDB_RLOCK))
99 return HDB_ERR_DB_INUSE;
100 code = dbcp->c_get(dbcp, &key, &value, flag);
101 db->unlock(context, db); /* XXX check value */
102 if (code == DB_NOTFOUND)
103 return HDB_ERR_NOENTRY;
107 key_data.data = key.data;
108 key_data.length = key.size;
109 data.data = value.data;
110 data.length = value.size;
111 if (hdb_value2entry(context, &data, entry))
112 return DB_seq(context, db, flags, entry, DB_NEXT);
113 if (db->master_key_set && (flags & HDB_F_DECRYPT)) {
114 code = hdb_unseal_keys (context, db, entry);
116 hdb_free_entry (context, entry);
118 if (entry->principal == NULL) {
119 entry->principal = malloc(sizeof(*entry->principal));
120 if (entry->principal == NULL) {
121 hdb_free_entry (context, entry);
122 krb5_set_error_string(context, "malloc: out of memory");
125 hdb_key2principal(context, &key_data, entry->principal);
132 static krb5_error_code
133 DB_firstkey(krb5_context context, HDB *db, unsigned flags, hdb_entry *entry)
135 return DB_seq(context, db, flags, entry, DB_FIRST);
139 static krb5_error_code
140 DB_nextkey(krb5_context context, HDB *db, unsigned flags, hdb_entry *entry)
142 return DB_seq(context, db, flags, entry, DB_NEXT);
145 static krb5_error_code
146 DB_rename(krb5_context context, HDB *db, const char *new_name)
151 asprintf(&old, "%s.db", db->name);
152 asprintf(&new, "%s.db", new_name);
153 ret = rename(old, new);
160 db->name = strdup(new_name);
164 static krb5_error_code
165 DB__get(krb5_context context, HDB *db, krb5_data key, krb5_data *reply)
171 memset(&k, 0, sizeof(DBT));
172 memset(&v, 0, sizeof(DBT));
176 if ((code = db->lock(context, db, HDB_RLOCK)))
178 code = d->get(d, NULL, &k, &v, 0);
179 db->unlock(context, db);
180 if(code == DB_NOTFOUND)
181 return HDB_ERR_NOENTRY;
185 krb5_data_copy(reply, v.data, v.size);
189 static krb5_error_code
190 DB__put(krb5_context context, HDB *db, int replace,
191 krb5_data key, krb5_data value)
197 memset(&k, 0, sizeof(DBT));
198 memset(&v, 0, sizeof(DBT));
203 v.size = value.length;
205 if ((code = db->lock(context, db, HDB_WLOCK)))
207 code = d->put(d, NULL, &k, &v, replace ? 0 : DB_NOOVERWRITE);
208 db->unlock(context, db);
209 if(code == DB_KEYEXIST)
210 return HDB_ERR_EXISTS;
216 static krb5_error_code
217 DB__del(krb5_context context, HDB *db, krb5_data key)
221 krb5_error_code code;
222 memset(&k, 0, sizeof(DBT));
226 code = db->lock(context, db, HDB_WLOCK);
229 code = d->del(d, NULL, &k, 0);
230 db->unlock(context, db);
231 if(code == DB_NOTFOUND)
232 return HDB_ERR_NOENTRY;
238 static krb5_error_code
239 DB_open(krb5_context context, HDB *db, int flags, mode_t mode)
247 myflags |= DB_CREATE;
252 if (flags & O_RDONLY)
253 myflags |= DB_RDONLY;
256 myflags |= DB_TRUNCATE;
258 asprintf(&fn, "%s.db", db->name);
260 krb5_set_error_string(context, "malloc: out of memory");
263 db_create(&d, NULL, 0);
265 if ((ret = d->open(db->db, fn, NULL, DB_BTREE, myflags, mode))) {
267 /* try to open without .db extension */
268 if (d->open(db->db, db->name, NULL, DB_BTREE, myflags, mode)) {
270 krb5_set_error_string(context, "opening %s: %s",
271 db->name, strerror(ret));
277 ret = d->cursor(d, NULL, (DBC **)&db->dbc, 0);
279 krb5_set_error_string(context, "d->cursor: %s", strerror(ret));
283 if((flags & O_ACCMODE) == O_RDONLY)
284 ret = hdb_check_db_format(context, db);
286 ret = hdb_init_db(context, db);
287 if(ret == HDB_ERR_NOENTRY)
293 hdb_db_create(krb5_context context, HDB **db,
294 const char *filename)
296 *db = malloc(sizeof(**db));
298 krb5_set_error_string(context, "malloc: out of memory");
303 (*db)->name = strdup(filename);
304 if ((*db)->name == NULL) {
305 krb5_set_error_string(context, "malloc: out of memory");
310 (*db)->master_key_set = 0;
312 (*db)->open = DB_open;
313 (*db)->close = DB_close;
314 (*db)->fetch = _hdb_fetch;
315 (*db)->store = _hdb_store;
316 (*db)->remove = _hdb_remove;
317 (*db)->firstkey = DB_firstkey;
318 (*db)->nextkey= DB_nextkey;
319 (*db)->lock = DB_lock;
320 (*db)->unlock = DB_unlock;
321 (*db)->rename = DB_rename;
322 (*db)->_get = DB__get;
323 (*db)->_put = DB__put;
324 (*db)->_del = DB__del;
325 (*db)->destroy = DB_destroy;
328 #endif /* HAVE_DB3 */