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 if (asprintf(&cache_fname, "%s/%s", lp_lockdir(), LOGIN_CACHE_FILE) == -1) {
39 DEBUG(0, ("Filename allocation failed.\n"));
43 DEBUG(5, ("Opening cache file at %s\n", cache_fname));
45 cache = tdb_open_log(cache_fname, 0, TDB_DEFAULT,
46 O_RDWR|O_CREAT, 0644);
49 DEBUG(5, ("Attempt to open %s failed.\n", cache_fname));
51 SAFE_FREE(cache_fname);
53 return (cache ? True : False);
56 bool login_cache_shutdown(void)
58 /* tdb_close routine returns -1 on error */
59 if (!cache) return False;
60 DEBUG(5, ("Closing cache file\n"));
61 return tdb_close(cache) != -1;
64 /* if we can't read the cache, oh well, no need to return anything */
65 LOGIN_CACHE * login_cache_read(struct samu *sampass)
71 if (!login_cache_init())
74 if (pdb_get_nt_username(sampass) == NULL) {
78 keystr = SMB_STRDUP(pdb_get_nt_username(sampass));
79 if (!keystr || !keystr[0]) {
84 DEBUG(7, ("Looking up login cache for user %s\n",
86 databuf = tdb_fetch_bystring(cache, keystr);
89 if (!(entry = SMB_MALLOC_P(LOGIN_CACHE))) {
90 DEBUG(1, ("Unable to allocate cache entry buffer!\n"));
91 SAFE_FREE(databuf.dptr);
95 if (tdb_unpack (databuf.dptr, databuf.dsize, SAM_CACHE_FORMAT,
96 &entry->entry_timestamp, &entry->acct_ctrl,
97 &entry->bad_password_count,
98 &entry->bad_password_time) == -1) {
99 DEBUG(7, ("No cache entry found\n"));
101 SAFE_FREE(databuf.dptr);
105 SAFE_FREE(databuf.dptr);
107 DEBUG(5, ("Found login cache entry: timestamp %12u, flags 0x%x, count %d, time %12u\n",
108 (unsigned int)entry->entry_timestamp, entry->acct_ctrl,
109 entry->bad_password_count, (unsigned int)entry->bad_password_time));
113 bool login_cache_write(const struct samu *sampass, LOGIN_CACHE entry)
119 if (!login_cache_init())
122 if (pdb_get_nt_username(sampass) == NULL) {
126 keystr = SMB_STRDUP(pdb_get_nt_username(sampass));
127 if (!keystr || !keystr[0]) {
132 entry.entry_timestamp = time(NULL);
135 tdb_pack(NULL, 0, SAM_CACHE_FORMAT,
136 entry.entry_timestamp,
138 entry.bad_password_count,
139 entry.bad_password_time);
140 databuf.dptr = SMB_MALLOC_ARRAY(uint8, databuf.dsize);
146 if (tdb_pack(databuf.dptr, databuf.dsize, SAM_CACHE_FORMAT,
147 entry.entry_timestamp,
149 entry.bad_password_count,
150 entry.bad_password_time)
153 SAFE_FREE(databuf.dptr);
157 ret = tdb_store_bystring(cache, keystr, databuf, 0);
159 SAFE_FREE(databuf.dptr);
163 bool login_cache_delentry(const struct samu *sampass)
168 if (!login_cache_init())
171 if (pdb_get_nt_username(sampass) == NULL) {
175 keystr = SMB_STRDUP(pdb_get_nt_username(sampass));
176 if (!keystr || !keystr[0]) {
181 DEBUG(9, ("About to delete entry for %s\n", keystr));
182 ret = tdb_delete_bystring(cache, keystr);
183 DEBUG(9, ("tdb_delete returned %d\n", ret));