2 * Copyright (c) 1997 - 2001 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
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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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36 RCSID("$Id: db.c 20215 2007-02-09 21:59:53Z lha $");
40 #if defined(HAVE_DB_185_H)
42 #elif defined(HAVE_DB_H)
46 static krb5_error_code
47 DB_close(krb5_context context, HDB *db)
49 DB *d = (DB*)db->hdb_db;
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)
68 DB *d = (DB*)db->hdb_db;
71 krb5_set_error_string(context,
72 "Can't lock database: %s", db->hdb_name);
73 return HDB_ERR_CANT_LOCK_DB;
75 return hdb_lock(fd, operation);
78 static krb5_error_code
79 DB_unlock(krb5_context context, HDB *db)
81 DB *d = (DB*)db->hdb_db;
84 krb5_set_error_string(context,
85 "Can't unlock database: %s", db->hdb_name);
86 return HDB_ERR_CANT_LOCK_DB;
88 return hdb_unlock(fd);
92 static krb5_error_code
93 DB_seq(krb5_context context, HDB *db,
94 unsigned flags, hdb_entry_ex *entry, int flag)
96 DB *d = (DB*)db->hdb_db;
98 krb5_data key_data, data;
101 code = db->hdb_lock(context, db, HDB_RLOCK);
103 krb5_set_error_string(context, "Database %s in use", db->hdb_name);
104 return HDB_ERR_DB_INUSE;
106 code = (*d->seq)(d, &key, &value, flag);
107 db->hdb_unlock(context, db); /* XXX check value */
110 krb5_set_error_string(context, "Database %s seq error: %s",
111 db->hdb_name, strerror(code));
115 krb5_clear_error_string(context);
116 return HDB_ERR_NOENTRY;
119 key_data.data = key.data;
120 key_data.length = key.size;
121 data.data = value.data;
122 data.length = value.size;
123 memset(entry, 0, sizeof(*entry));
124 if (hdb_value2entry(context, &data, &entry->entry))
125 return DB_seq(context, db, flags, entry, R_NEXT);
126 if (db->hdb_master_key_set && (flags & HDB_F_DECRYPT)) {
127 code = hdb_unseal_keys (context, db, &entry->entry);
129 hdb_free_entry (context, entry);
131 if (code == 0 && entry->entry.principal == NULL) {
132 entry->entry.principal = malloc(sizeof(*entry->entry.principal));
133 if (entry->entry.principal == NULL) {
134 krb5_set_error_string(context, "malloc: out of memory");
136 hdb_free_entry (context, entry);
138 hdb_key2principal(context, &key_data, entry->entry.principal);
145 static krb5_error_code
146 DB_firstkey(krb5_context context, HDB *db, unsigned flags, hdb_entry_ex *entry)
148 return DB_seq(context, db, flags, entry, R_FIRST);
152 static krb5_error_code
153 DB_nextkey(krb5_context context, HDB *db, unsigned flags, hdb_entry_ex *entry)
155 return DB_seq(context, db, flags, entry, R_NEXT);
158 static krb5_error_code
159 DB_rename(krb5_context context, HDB *db, const char *new_name)
164 asprintf(&old, "%s.db", db->hdb_name);
165 asprintf(&new, "%s.db", new_name);
166 ret = rename(old, new);
173 db->hdb_name = strdup(new_name);
177 static krb5_error_code
178 DB__get(krb5_context context, HDB *db, krb5_data key, krb5_data *reply)
180 DB *d = (DB*)db->hdb_db;
186 code = db->hdb_lock(context, db, HDB_RLOCK);
189 code = (*d->get)(d, &k, &v, 0);
190 db->hdb_unlock(context, db);
193 krb5_set_error_string(context, "Database %s get error: %s",
194 db->hdb_name, strerror(code));
198 krb5_clear_error_string(context);
199 return HDB_ERR_NOENTRY;
202 krb5_data_copy(reply, v.data, v.size);
206 static krb5_error_code
207 DB__put(krb5_context context, HDB *db, int replace,
208 krb5_data key, krb5_data value)
210 DB *d = (DB*)db->hdb_db;
217 v.size = value.length;
218 code = db->hdb_lock(context, db, HDB_WLOCK);
221 code = (*d->put)(d, &k, &v, replace ? 0 : R_NOOVERWRITE);
222 db->hdb_unlock(context, db);
225 krb5_set_error_string(context, "Database %s put error: %s",
226 db->hdb_name, strerror(code));
230 krb5_clear_error_string(context);
231 return HDB_ERR_EXISTS;
236 static krb5_error_code
237 DB__del(krb5_context context, HDB *db, krb5_data key)
239 DB *d = (DB*)db->hdb_db;
241 krb5_error_code code;
244 code = db->hdb_lock(context, db, HDB_WLOCK);
247 code = (*d->del)(d, &k, 0);
248 db->hdb_unlock(context, db);
251 krb5_set_error_string(context, "Database %s put error: %s",
252 db->hdb_name, strerror(code));
260 static krb5_error_code
261 DB_open(krb5_context context, HDB *db, int flags, mode_t mode)
266 asprintf(&fn, "%s.db", db->hdb_name);
268 krb5_set_error_string(context, "malloc: out of memory");
271 db->hdb_db = dbopen(fn, flags, mode, DB_BTREE, NULL);
273 /* try to open without .db extension */
274 if(db->hdb_db == NULL && errno == ENOENT)
275 db->hdb_db = dbopen(db->hdb_name, flags, mode, DB_BTREE, NULL);
276 if(db->hdb_db == NULL) {
278 krb5_set_error_string(context, "dbopen (%s): %s",
279 db->hdb_name, strerror(ret));
282 if((flags & O_ACCMODE) == O_RDONLY)
283 ret = hdb_check_db_format(context, db);
285 ret = hdb_init_db(context, db);
286 if(ret == HDB_ERR_NOENTRY) {
287 krb5_clear_error_string(context);
291 DB_close(context, db);
292 krb5_set_error_string(context, "hdb_open: failed %s database %s",
293 (flags & O_ACCMODE) == O_RDONLY ?
294 "checking format of" : "initialize",
301 hdb_db_create(krb5_context context, HDB **db,
302 const char *filename)
304 *db = calloc(1, sizeof(**db));
306 krb5_set_error_string(context, "malloc: out of memory");
310 (*db)->hdb_db = NULL;
311 (*db)->hdb_name = strdup(filename);
312 if ((*db)->hdb_name == NULL) {
313 krb5_set_error_string(context, "malloc: out of memory");
318 (*db)->hdb_master_key_set = 0;
319 (*db)->hdb_openp = 0;
320 (*db)->hdb_open = DB_open;
321 (*db)->hdb_close = DB_close;
322 (*db)->hdb_fetch = _hdb_fetch;
323 (*db)->hdb_store = _hdb_store;
324 (*db)->hdb_remove = _hdb_remove;
325 (*db)->hdb_firstkey = DB_firstkey;
326 (*db)->hdb_nextkey= DB_nextkey;
327 (*db)->hdb_lock = DB_lock;
328 (*db)->hdb_unlock = DB_unlock;
329 (*db)->hdb_rename = DB_rename;
330 (*db)->hdb__get = DB__get;
331 (*db)->hdb__put = DB__put;
332 (*db)->hdb__del = DB__del;
333 (*db)->hdb_destroy = DB_destroy;
337 #endif /* HAVE_DB1 */