2 Unix SMB/CIFS implementation.
3 Share Database of available printers.
4 Copyright (C) Simo Sorce 2010
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/>.
21 #include "system/filesys.h"
22 #include "dbwrap/dbwrap.h"
23 #include "dbwrap/dbwrap_open.h"
25 #include "printer_list.h"
27 #define PL_DB_NAME() lock_path("printer_list.tdb")
28 #define PL_KEY_PREFIX "PRINTERLIST/PRN/"
29 #define PL_KEY_FORMAT PL_KEY_PREFIX"%s"
30 #define PL_TIMESTAMP_KEY "PRINTERLIST/GLOBAL/LAST_REFRESH"
31 #define PL_DATA_FORMAT "ddPPP"
32 #define PL_TSTAMP_FORMAT "dd"
34 static struct db_context *get_printer_list_db(void)
36 static struct db_context *db;
41 db = db_open(NULL, PL_DB_NAME(), 0,
42 TDB_DEFAULT|TDB_CLEAR_IF_FIRST|TDB_INCOMPATIBLE_HASH,
43 O_RDWR|O_CREAT, 0644);
47 bool printer_list_parent_init(void)
49 struct db_context *db;
52 * Open the tdb in the parent process (smbd) so that our
53 * CLEAR_IF_FIRST optimization in tdb_reopen_all can properly
57 db = get_printer_list_db();
59 DEBUG(1, ("could not open Printer List Database: %s\n",
66 NTSTATUS printer_list_get_printer(TALLOC_CTX *mem_ctx,
69 const char **location,
72 struct db_context *db;
75 uint32_t time_h, time_l;
82 db = get_printer_list_db();
84 return NT_STATUS_INTERNAL_DB_CORRUPTION;
87 key = talloc_asprintf(mem_ctx, PL_KEY_FORMAT, name);
89 DEBUG(0, ("Failed to allocate key name!\n"));
90 return NT_STATUS_NO_MEMORY;
93 data = dbwrap_fetch_bystring_upper(db, key, key);
94 if (data.dptr == NULL) {
95 DEBUG(1, ("Failed to fetch record!\n"));
96 status = NT_STATUS_NOT_FOUND;
100 ret = tdb_unpack(data.dptr, data.dsize,
102 &time_h, &time_l, &nstr, &cstr, &lstr);
104 DEBUG(1, ("Failed to un pack printer data"));
105 status = NT_STATUS_INTERNAL_DB_CORRUPTION;
110 *last_refresh = (time_t)(((uint64_t)time_h << 32) + time_l);
114 *comment = talloc_strdup(mem_ctx, cstr);
116 DEBUG(1, ("Failed to strdup comment!\n"));
117 status = NT_STATUS_NO_MEMORY;
123 *location = talloc_strdup(mem_ctx, lstr);
124 if (*location == NULL) {
125 DEBUG(1, ("Failed to strdup location!\n"));
126 status = NT_STATUS_NO_MEMORY;
131 status = NT_STATUS_OK;
140 NTSTATUS printer_list_set_printer(TALLOC_CTX *mem_ctx,
143 const char *location,
146 struct db_context *db;
150 uint32_t time_h, time_l;
151 const char *str = NULL;
152 const char *str2 = NULL;
156 db = get_printer_list_db();
158 return NT_STATUS_INTERNAL_DB_CORRUPTION;
161 key = talloc_asprintf(mem_ctx, PL_KEY_FORMAT, name);
163 DEBUG(0, ("Failed to allocate key name!\n"));
164 return NT_STATUS_NO_MEMORY;
180 time_64 = last_refresh;
181 time_l = time_64 & 0xFFFFFFFFL;
182 time_h = time_64 >> 32;
184 len = tdb_pack(NULL, 0, PL_DATA_FORMAT, time_h, time_l, name, str, str2);
186 data.dptr = talloc_array(key, uint8_t, len);
188 DEBUG(0, ("Failed to allocate tdb data buffer!\n"));
189 status = NT_STATUS_NO_MEMORY;
194 len = tdb_pack(data.dptr, data.dsize,
195 PL_DATA_FORMAT, time_h, time_l, name, str);
197 status = dbwrap_store_bystring_upper(db, key, data, TDB_REPLACE);
204 NTSTATUS printer_list_get_last_refresh(time_t *last_refresh)
206 struct db_context *db;
208 uint32_t time_h, time_l;
212 db = get_printer_list_db();
214 return NT_STATUS_INTERNAL_DB_CORRUPTION;
219 data = dbwrap_fetch_bystring(db, talloc_tos(), PL_TIMESTAMP_KEY);
220 if (data.dptr == NULL) {
221 DEBUG(1, ("Failed to fetch record!\n"));
222 status = NT_STATUS_NOT_FOUND;
226 ret = tdb_unpack(data.dptr, data.dsize,
227 PL_TSTAMP_FORMAT, &time_h, &time_l);
229 DEBUG(1, ("Failed to un pack printer data"));
230 status = NT_STATUS_INTERNAL_DB_CORRUPTION;
234 *last_refresh = (time_t)(((uint64_t)time_h << 32) + time_l);
235 status = NT_STATUS_OK;
241 NTSTATUS printer_list_mark_reload(void)
243 struct db_context *db;
245 uint32_t time_h, time_l;
246 time_t now = time_mono(NULL);
250 db = get_printer_list_db();
252 return NT_STATUS_INTERNAL_DB_CORRUPTION;
255 time_l = ((uint64_t)now) & 0xFFFFFFFFL;
256 time_h = ((uint64_t)now) >> 32;
258 len = tdb_pack(NULL, 0, PL_TSTAMP_FORMAT, time_h, time_l);
260 data.dptr = talloc_array(talloc_tos(), uint8_t, len);
262 DEBUG(0, ("Failed to allocate tdb data buffer!\n"));
263 status = NT_STATUS_NO_MEMORY;
268 len = tdb_pack(data.dptr, data.dsize,
269 PL_TSTAMP_FORMAT, time_h, time_l);
271 status = dbwrap_store_bystring(db, PL_TIMESTAMP_KEY,
275 TALLOC_FREE(data.dptr);
279 typedef int (printer_list_trv_fn_t)(struct db_record *, void *);
281 static NTSTATUS printer_list_traverse(printer_list_trv_fn_t *fn,
284 struct db_context *db;
287 db = get_printer_list_db();
289 return NT_STATUS_INTERNAL_DB_CORRUPTION;
292 ret = db->traverse(db, fn, private_data);
294 return NT_STATUS_UNSUCCESSFUL;
300 struct printer_list_clean_state {
305 static int printer_list_clean_fn(struct db_record *rec, void *private_data)
307 struct printer_list_clean_state *state =
308 (struct printer_list_clean_state *)private_data;
309 uint32_t time_h, time_l;
316 /* skip anything that does not contain PL_DATA_FORMAT data */
317 if (strncmp((char *)rec->key.dptr,
318 PL_KEY_PREFIX, sizeof(PL_KEY_PREFIX)-1)) {
322 ret = tdb_unpack(rec->value.dptr, rec->value.dsize,
323 PL_DATA_FORMAT, &time_h, &time_l, &name, &comment,
326 DEBUG(1, ("Failed to un pack printer data"));
327 state->status = NT_STATUS_INTERNAL_DB_CORRUPTION;
335 refresh = (time_t)(((uint64_t)time_h << 32) + time_l);
337 if (refresh < state->last_refresh) {
338 state->status = rec->delete_rec(rec);
339 if (!NT_STATUS_IS_OK(state->status)) {
347 NTSTATUS printer_list_clean_old(void)
349 struct printer_list_clean_state state;
352 status = printer_list_get_last_refresh(&state.last_refresh);
353 if (!NT_STATUS_IS_OK(status)) {
357 state.status = NT_STATUS_OK;
359 status = printer_list_traverse(printer_list_clean_fn, &state);
360 if (NT_STATUS_EQUAL(status, NT_STATUS_UNSUCCESSFUL) &&
361 !NT_STATUS_IS_OK(state.status)) {
362 status = state.status;
368 struct printer_list_exec_state {
369 void (*fn)(const char *, const char *, const char *, void *);
374 static int printer_list_exec_fn(struct db_record *rec, void *private_data)
376 struct printer_list_exec_state *state =
377 (struct printer_list_exec_state *)private_data;
378 uint32_t time_h, time_l;
384 /* always skip PL_TIMESTAMP_KEY key */
385 if (strequal((const char *)rec->key.dptr, PL_TIMESTAMP_KEY)) {
389 ret = tdb_unpack(rec->value.dptr, rec->value.dsize,
390 PL_DATA_FORMAT, &time_h, &time_l, &name, &comment,
393 DEBUG(1, ("Failed to un pack printer data"));
394 state->status = NT_STATUS_INTERNAL_DB_CORRUPTION;
398 state->fn(name, comment, location, state->private_data);
406 NTSTATUS printer_list_run_fn(void (*fn)(const char *, const char *, const char *, void *),
409 struct printer_list_exec_state state;
413 state.private_data = private_data;
414 state.status = NT_STATUS_OK;
416 status = printer_list_traverse(printer_list_exec_fn, &state);
417 if (NT_STATUS_EQUAL(status, NT_STATUS_UNSUCCESSFUL) &&
418 !NT_STATUS_IS_OK(state.status)) {
419 status = state.status;