2 Unix SMB/CIFS implementation.
3 struct samu local cache for
4 Copyright (C) Jim McDonough (jmcd@us.ibm.com) 2004.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
23 #define DBGC_CLASS DBGC_PASSDB
25 #define LOGIN_CACHE_FILE "login_cache.tdb"
27 #define SAM_CACHE_FORMAT "dwwd"
29 static TDB_CONTEXT *cache;
31 bool login_cache_init(void)
33 char* cache_fname = NULL;
35 /* skip file open if it's already opened */
36 if (cache) return True;
38 cache_fname = cache_path(LOGIN_CACHE_FILE);
39 if (cache_fname == NULL) {
40 DEBUG(0, ("Filename allocation failed.\n"));
44 DEBUG(5, ("Opening cache file at %s\n", cache_fname));
46 cache = tdb_open_log(cache_fname, 0, TDB_DEFAULT,
47 O_RDWR|O_CREAT, 0644);
50 DEBUG(5, ("Attempt to open %s failed.\n", cache_fname));
52 TALLOC_FREE(cache_fname);
54 return (cache ? True : False);
57 bool login_cache_shutdown(void)
59 /* tdb_close routine returns -1 on error */
60 if (!cache) return False;
61 DEBUG(5, ("Closing cache file\n"));
62 return tdb_close(cache) != -1;
65 /* if we can't read the cache, oh well, no need to return anything */
66 struct login_cache * login_cache_read(struct samu *sampass)
70 struct login_cache *entry;
71 uint32_t entry_timestamp = 0, bad_password_time = 0;
73 if (!login_cache_init())
76 if (pdb_get_nt_username(sampass) == NULL) {
80 keystr = SMB_STRDUP(pdb_get_nt_username(sampass));
81 if (!keystr || !keystr[0]) {
86 DEBUG(7, ("Looking up login cache for user %s\n",
88 databuf = tdb_fetch_bystring(cache, keystr);
91 entry = SMB_MALLOC_P(struct login_cache);
93 DEBUG(1, ("Unable to allocate cache entry buffer!\n"));
94 SAFE_FREE(databuf.dptr);
99 if (tdb_unpack (databuf.dptr, databuf.dsize, SAM_CACHE_FORMAT,
102 &entry->bad_password_count,
103 &bad_password_time) == -1) {
104 DEBUG(7, ("No cache entry found\n"));
106 SAFE_FREE(databuf.dptr);
110 /* Deal with possible 64-bit time_t. */
111 entry->entry_timestamp = (time_t)entry_timestamp;
112 entry->bad_password_time = (time_t)bad_password_time;
114 SAFE_FREE(databuf.dptr);
116 DEBUG(5, ("Found login cache entry: timestamp %12u, flags 0x%x, count %d, time %12u\n",
117 (unsigned int)entry->entry_timestamp, entry->acct_ctrl,
118 entry->bad_password_count, (unsigned int)entry->bad_password_time));
122 bool login_cache_write(const struct samu *sampass, struct login_cache entry)
127 uint32_t entry_timestamp;
128 uint32_t bad_password_time = (uint32_t)entry.bad_password_time;
130 if (!login_cache_init())
133 if (pdb_get_nt_username(sampass) == NULL) {
137 keystr = SMB_STRDUP(pdb_get_nt_username(sampass));
138 if (!keystr || !keystr[0]) {
143 entry_timestamp = (uint32_t)time(NULL);
146 tdb_pack(NULL, 0, SAM_CACHE_FORMAT,
149 entry.bad_password_count,
151 databuf.dptr = SMB_MALLOC_ARRAY(uint8, databuf.dsize);
157 if (tdb_pack(databuf.dptr, databuf.dsize, SAM_CACHE_FORMAT,
160 entry.bad_password_count,
164 SAFE_FREE(databuf.dptr);
168 ret = tdb_store_bystring(cache, keystr, databuf, 0);
170 SAFE_FREE(databuf.dptr);
174 bool login_cache_delentry(const struct samu *sampass)
179 if (!login_cache_init())
182 if (pdb_get_nt_username(sampass) == NULL) {
186 keystr = SMB_STRDUP(pdb_get_nt_username(sampass));
187 if (!keystr || !keystr[0]) {
192 DEBUG(9, ("About to delete entry for %s\n", keystr));
193 ret = tdb_delete_bystring(cache, keystr);
194 DEBUG(9, ("tdb_delete returned %d\n", ret));