82474746 |
1 | <?php |
15e6162e |
2 | |
d6c32258 |
3 | /** |
35586184 |
4 | * db_prefs.php |
5 | * |
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6 | * This contains functions for manipulating user preferences |
7 | * stored in a database, accessed though the Pear DB layer. |
8 | * |
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9 | * Database: |
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10 | * |
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11 | * The preferences table should have three columns: |
12 | * user char \ primary |
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13 | * prefkey char / key |
14 | * prefval blob |
15 | * |
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16 | * CREATE TABLE userprefs (user CHAR(128) NOT NULL DEFAULT '', |
35586184 |
17 | * prefkey CHAR(64) NOT NULL DEFAULT '', |
18 | * prefval BLOB NOT NULL DEFAULT '', |
19 | * primary key (user,prefkey)); |
20 | * |
21 | * Configuration of databasename, username and password is done |
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22 | * by using conf.pl or the administrator plugin |
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23 | * |
1977ab55 |
24 | * @copyright 1999-2010 The SquirrelMail Project Team |
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25 | * @license http://opensource.org/licenses/gpl-license.php GNU Public License |
31841a9e |
26 | * @version $Id$ |
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27 | * @package squirrelmail |
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28 | * @subpackage prefs |
29 | * @since 1.1.3 |
35586184 |
30 | */ |
31 | |
ace4c62c |
32 | /** @ignore */ |
33 | if (!defined('SM_PATH')) define('SM_PATH','../'); |
34 | |
d6c32258 |
35 | /** Unknown database */ |
98749983 |
36 | define('SMDB_UNKNOWN', 0); |
d6c32258 |
37 | /** MySQL */ |
98749983 |
38 | define('SMDB_MYSQL', 1); |
d6c32258 |
39 | /** PostgreSQL */ |
98749983 |
40 | define('SMDB_PGSQL', 2); |
41 | |
099fea11 |
42 | /** |
43 | * don't display errors (no code execution in functions/*.php). |
44 | * will handle error in dbPrefs class. |
45 | */ |
46 | @include_once('DB.php'); |
35586184 |
47 | |
370059dd |
48 | global $prefs_are_cached, $prefs_cache; |
2d367c68 |
49 | |
4d30c1b7 |
50 | /** |
51 | * @ignore |
52 | */ |
370059dd |
53 | function cachePrefValues($username) { |
54 | global $prefs_are_cached, $prefs_cache; |
55 | |
37d5278d |
56 | sqgetGlobalVar('prefs_are_cached', $prefs_are_cached, SQ_SESSION ); |
370059dd |
57 | if ($prefs_are_cached) { |
37d5278d |
58 | sqgetGlobalVar('prefs_cache', $prefs_cache, SQ_SESSION ); |
370059dd |
59 | return; |
60 | } |
2d367c68 |
61 | |
9eb0fbd4 |
62 | sqsession_unregister('prefs_cache'); |
63 | sqsession_unregister('prefs_are_cached'); |
370059dd |
64 | |
65 | $db = new dbPrefs; |
66 | if(isset($db->error)) { |
67 | printf( _("Preference database error (%s). Exiting abnormally"), |
68 | $db->error); |
69 | exit; |
70 | } |
2d367c68 |
71 | |
370059dd |
72 | $db->fillPrefsCache($username); |
73 | if (isset($db->error)) { |
74 | printf( _("Preference database error (%s). Exiting abnormally"), |
75 | $db->error); |
76 | exit; |
77 | } |
78 | |
79 | $prefs_are_cached = true; |
80 | |
9eb0fbd4 |
81 | sqsession_register($prefs_cache, 'prefs_cache'); |
82 | sqsession_register($prefs_are_cached, 'prefs_are_cached'); |
370059dd |
83 | } |
84 | |
d6c32258 |
85 | /** |
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86 | * Class used to handle connections to prefs database and operations with preferences |
37b11ab0 |
87 | * |
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88 | * @package squirrelmail |
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89 | * @subpackage prefs |
90 | * @since 1.1.3 |
37b11ab0 |
91 | * |
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92 | */ |
370059dd |
93 | class dbPrefs { |
ace4c62c |
94 | /** |
95 | * Table used to store preferences |
96 | * @var string |
97 | */ |
370059dd |
98 | var $table = 'userprefs'; |
37b11ab0 |
99 | |
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100 | /** |
101 | * Field used to store owner of preference |
102 | * @var string |
103 | */ |
99a6c222 |
104 | var $user_field = 'user'; |
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105 | |
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106 | /** |
107 | * Field used to store preference name |
108 | * @var string |
109 | */ |
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110 | var $key_field = 'prefkey'; |
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111 | |
ace4c62c |
112 | /** |
113 | * Field used to store preference value |
114 | * @var string |
115 | */ |
99a6c222 |
116 | var $val_field = 'prefval'; |
370059dd |
117 | |
ace4c62c |
118 | /** |
119 | * Database connection object |
120 | * @var object |
121 | */ |
370059dd |
122 | var $dbh = NULL; |
37b11ab0 |
123 | |
ace4c62c |
124 | /** |
125 | * Error messages |
126 | * @var string |
127 | */ |
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128 | var $error = NULL; |
37b11ab0 |
129 | |
ace4c62c |
130 | /** |
131 | * Database type (SMDB_* constants) |
132 | * Is used in setKey(). |
133 | * @var integer |
134 | */ |
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135 | var $db_type = SMDB_UNKNOWN; |
370059dd |
136 | |
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137 | /** |
138 | * Default preferences |
139 | * @var array |
140 | */ |
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141 | var $default = Array('theme_default' => 0, |
370059dd |
142 | 'show_html_default' => '0'); |
143 | |
06316c07 |
144 | /** |
145 | * Preference owner field size |
146 | * @var integer |
147 | * @since 1.5.1 |
148 | */ |
149 | var $user_size = 128; |
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150 | |
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151 | /** |
152 | * Preference key field size |
153 | * @var integer |
154 | * @since 1.5.1 |
155 | */ |
156 | var $key_size = 64; |
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157 | |
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158 | /** |
159 | * Preference value field size |
160 | * @var integer |
161 | * @since 1.5.1 |
162 | */ |
163 | var $val_size = 65536; |
164 | |
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165 | |
166 | |
3ec364a4 |
167 | /** |
168 | * initialize the default preferences array. |
169 | * |
170 | */ |
171 | function dbPrefs() { |
172 | // Try and read the default preferences file. |
173 | $default_pref = SM_PATH . 'config/default_pref'; |
174 | if (@file_exists($default_pref)) { |
175 | if ($file = @fopen($default_pref, 'r')) { |
176 | while (!feof($file)) { |
177 | $pref = fgets($file, 1024); |
178 | $i = strpos($pref, '='); |
179 | if ($i > 0) { |
180 | $this->default[trim(substr($pref, 0, $i))] = trim(substr($pref, $i + 1)); |
181 | } |
182 | } |
183 | fclose($file); |
184 | } |
185 | } |
186 | } |
187 | |
ace4c62c |
188 | /** |
189 | * initialize DB connection object |
37b11ab0 |
190 | * |
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191 | * @return boolean true, if object is initialized |
37b11ab0 |
192 | * |
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193 | */ |
370059dd |
194 | function open() { |
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195 | global $prefs_dsn, $prefs_table; |
98749983 |
196 | global $prefs_user_field, $prefs_key_field, $prefs_val_field; |
06316c07 |
197 | global $prefs_user_size, $prefs_key_size, $prefs_val_size; |
3499f99f |
198 | |
099fea11 |
199 | /* test if Pear DB class is available and freak out if it is not */ |
200 | if (! class_exists('DB')) { |
201 | // same error also in abook_database.php |
ae13f72f |
202 | $this->error = _("Could not include PEAR database functions required for the database backend.") . "\n"; |
099fea11 |
203 | $this->error .= sprintf(_("Is PEAR installed, and is the include path set correctly to find %s?"), |
ae13f72f |
204 | 'DB.php') . "\n"; |
099fea11 |
205 | $this->error .= _("Please contact your system administrator and report this error."); |
206 | return false; |
207 | } |
208 | |
370059dd |
209 | if(isset($this->dbh)) { |
210 | return true; |
211 | } |
3499f99f |
212 | |
98749983 |
213 | if (preg_match('/^mysql/', $prefs_dsn)) { |
214 | $this->db_type = SMDB_MYSQL; |
215 | } elseif (preg_match('/^pgsql/', $prefs_dsn)) { |
216 | $this->db_type = SMDB_PGSQL; |
217 | } |
218 | |
3499f99f |
219 | if (!empty($prefs_table)) { |
220 | $this->table = $prefs_table; |
221 | } |
99a6c222 |
222 | if (!empty($prefs_user_field)) { |
223 | $this->user_field = $prefs_user_field; |
224 | } |
865050ce |
225 | |
226 | // the default user field is "user", which in PostgreSQL |
227 | // is an identifier and causes errors if not escaped |
228 | // |
229 | if ($this->db_type == SMDB_PGSQL) { |
230 | $this->user_field = '"' . $this->user_field . '"'; |
231 | } |
232 | |
99a6c222 |
233 | if (!empty($prefs_key_field)) { |
234 | $this->key_field = $prefs_key_field; |
235 | } |
236 | if (!empty($prefs_val_field)) { |
237 | $this->val_field = $prefs_val_field; |
238 | } |
06316c07 |
239 | if (!empty($prefs_user_size)) { |
240 | $this->user_size = (int) $prefs_user_size; |
241 | } |
242 | if (!empty($prefs_key_size)) { |
243 | $this->key_size = (int) $prefs_key_size; |
244 | } |
245 | if (!empty($prefs_val_size)) { |
246 | $this->val_size = (int) $prefs_val_size; |
247 | } |
70561170 |
248 | $dbh = DB::connect($prefs_dsn, true); |
2d367c68 |
249 | |
286fe80b |
250 | if(DB::isError($dbh)) { |
2d367c68 |
251 | $this->error = DB::errorMessage($dbh); |
252 | return false; |
253 | } |
254 | |
255 | $this->dbh = $dbh; |
256 | return true; |
370059dd |
257 | } |
82474746 |
258 | |
ace4c62c |
259 | /** |
260 | * Function used to handle database connection errors |
37b11ab0 |
261 | * |
202bcbcc |
262 | * @param object PEAR Error object |
37b11ab0 |
263 | * |
ace4c62c |
264 | */ |
370059dd |
265 | function failQuery($res = NULL) { |
2d367c68 |
266 | if($res == NULL) { |
267 | printf(_("Preference database error (%s). Exiting abnormally"), |
370059dd |
268 | $this->error); |
2d367c68 |
269 | } else { |
270 | printf(_("Preference database error (%s). Exiting abnormally"), |
370059dd |
271 | DB::errorMessage($res)); |
2d367c68 |
272 | } |
273 | exit; |
370059dd |
274 | } |
82474746 |
275 | |
ace4c62c |
276 | /** |
277 | * Get user's prefs setting |
37b11ab0 |
278 | * |
ace4c62c |
279 | * @param string $user user name |
280 | * @param string $key preference name |
281 | * @param mixed $default (since 1.2.5) default value |
37b11ab0 |
282 | * |
ace4c62c |
283 | * @return mixed preference value |
37b11ab0 |
284 | * |
ace4c62c |
285 | */ |
370059dd |
286 | function getKey($user, $key, $default = '') { |
287 | global $prefs_cache; |
2d367c68 |
288 | |
971c7b1a |
289 | $temp = array(&$user, &$key); |
290 | $result = do_hook('get_pref_override', $temp); |
291 | if (is_null($result)) { |
292 | cachePrefValues($user); |
2d367c68 |
293 | |
971c7b1a |
294 | if (isset($prefs_cache[$key])) { |
295 | $result = $prefs_cache[$key]; |
62337234 |
296 | } else { |
971c7b1a |
297 | //FIXME: is there a justification for having two prefs hooks so close? who uses them? |
298 | $temp = array(&$user, &$key); |
299 | $result = do_hook('get_pref', $temp); |
300 | if (is_null($result)) { |
301 | if (isset($this->default[$key])) { |
302 | $result = $this->default[$key]; |
303 | } else { |
304 | $result = $default; |
305 | } |
306 | } |
62337234 |
307 | } |
2d367c68 |
308 | } |
971c7b1a |
309 | return $result; |
370059dd |
310 | } |
2d367c68 |
311 | |
ace4c62c |
312 | /** |
313 | * Delete user's prefs setting |
37b11ab0 |
314 | * |
202bcbcc |
315 | * @param string $user user name |
37b11ab0 |
316 | * @param string $key preference name |
317 | * |
ace4c62c |
318 | * @return boolean |
37b11ab0 |
319 | * |
ace4c62c |
320 | */ |
370059dd |
321 | function deleteKey($user, $key) { |
322 | global $prefs_cache; |
82474746 |
323 | |
b279d7f4 |
324 | if (!$this->open()) { |
325 | return false; |
326 | } |
99a6c222 |
327 | $query = sprintf("DELETE FROM %s WHERE %s='%s' AND %s='%s'", |
370059dd |
328 | $this->table, |
99a6c222 |
329 | $this->user_field, |
370059dd |
330 | $this->dbh->quoteString($user), |
99a6c222 |
331 | $this->key_field, |
370059dd |
332 | $this->dbh->quoteString($key)); |
82474746 |
333 | |
2d367c68 |
334 | $res = $this->dbh->simpleQuery($query); |
370059dd |
335 | if(DB::isError($res)) { |
2d367c68 |
336 | $this->failQuery($res); |
370059dd |
337 | } |
338 | |
339 | unset($prefs_cache[$key]); |
82474746 |
340 | |
2d367c68 |
341 | return true; |
370059dd |
342 | } |
82474746 |
343 | |
ace4c62c |
344 | /** |
345 | * Set user's preference |
37b11ab0 |
346 | * |
347 | * @param string $user user name |
348 | * @param string $key preference name |
349 | * @param mixed $value preference value |
350 | * |
ace4c62c |
351 | * @return boolean |
37b11ab0 |
352 | * |
ace4c62c |
353 | */ |
370059dd |
354 | function setKey($user, $key, $value) { |
b279d7f4 |
355 | if (!$this->open()) { |
356 | return false; |
357 | } |
06316c07 |
358 | |
359 | /** |
360 | * Check if username fits into db field |
361 | */ |
362 | if (strlen($user) > $this->user_size) { |
363 | $this->error = "Oversized username value." |
5e07597f |
364 | ." Your preferences can't be saved." |
6f4c512c |
365 | ." See the administrator's manual or contact your system administrator."; |
06316c07 |
366 | |
367 | /** |
202bcbcc |
368 | * Debugging function. Can be used to log all issues that trigger |
369 | * oversized field errors. Function should be enabled in all three |
06316c07 |
370 | * strlen checks. See http://www.php.net/error-log |
371 | */ |
372 | // error_log($user.'|'.$key.'|'.$value."\n",3,'/tmp/oversized_log'); |
373 | |
374 | // error is fatal |
375 | $this->failQuery(null); |
376 | } |
377 | /** |
378 | * Check if preference key fits into db field |
379 | */ |
380 | if (strlen($key) > $this->key_size) { |
381 | $err_msg = "Oversized user's preference key." |
5e07597f |
382 | ." Some preferences were not saved." |
6f4c512c |
383 | ." See the administrator's manual or contact your system administrator."; |
06316c07 |
384 | // error is not fatal. Only some preference is not saved. |
385 | trigger_error($err_msg,E_USER_WARNING); |
386 | return false; |
387 | } |
388 | /** |
389 | * Check if preference value fits into db field |
390 | */ |
391 | if (strlen($value) > $this->val_size) { |
392 | $err_msg = "Oversized user's preference value." |
5e07597f |
393 | ." Some preferences were not saved." |
6f4c512c |
394 | ." See the administrator's manual or contact your system administrator."; |
06316c07 |
395 | // error is not fatal. Only some preference is not saved. |
396 | trigger_error($err_msg,E_USER_WARNING); |
397 | return false; |
398 | } |
399 | |
400 | |
98749983 |
401 | if ($this->db_type == SMDB_MYSQL) { |
402 | $query = sprintf("REPLACE INTO %s (%s, %s, %s) ". |
403 | "VALUES('%s','%s','%s')", |
404 | $this->table, |
405 | $this->user_field, |
406 | $this->key_field, |
407 | $this->val_field, |
408 | $this->dbh->quoteString($user), |
409 | $this->dbh->quoteString($key), |
410 | $this->dbh->quoteString($value)); |
411 | |
412 | $res = $this->dbh->simpleQuery($query); |
413 | if(DB::isError($res)) { |
414 | $this->failQuery($res); |
415 | } |
416 | } elseif ($this->db_type == SMDB_PGSQL) { |
417 | $this->dbh->simpleQuery("BEGIN TRANSACTION"); |
418 | $query = sprintf("DELETE FROM %s WHERE %s='%s' AND %s='%s'", |
419 | $this->table, |
420 | $this->user_field, |
421 | $this->dbh->quoteString($user), |
422 | $this->key_field, |
423 | $this->dbh->quoteString($key)); |
424 | $res = $this->dbh->simpleQuery($query); |
425 | if (DB::isError($res)) { |
426 | $this->dbh->simpleQuery("ROLLBACK TRANSACTION"); |
427 | $this->failQuery($res); |
428 | } |
429 | $query = sprintf("INSERT INTO %s (%s, %s, %s) VALUES ('%s', '%s', '%s')", |
430 | $this->table, |
431 | $this->user_field, |
432 | $this->key_field, |
433 | $this->val_field, |
434 | $this->dbh->quoteString($user), |
435 | $this->dbh->quoteString($key), |
436 | $this->dbh->quoteString($value)); |
437 | $res = $this->dbh->simpleQuery($query); |
438 | if (DB::isError($res)) { |
439 | $this->dbh->simpleQuery("ROLLBACK TRANSACTION"); |
440 | $this->failQuery($res); |
441 | } |
442 | $this->dbh->simpleQuery("COMMIT TRANSACTION"); |
443 | } else { |
444 | $query = sprintf("DELETE FROM %s WHERE %s='%s' AND %s='%s'", |
445 | $this->table, |
446 | $this->user_field, |
447 | $this->dbh->quoteString($user), |
448 | $this->key_field, |
449 | $this->dbh->quoteString($key)); |
450 | $res = $this->dbh->simpleQuery($query); |
451 | if (DB::isError($res)) { |
452 | $this->failQuery($res); |
453 | } |
454 | $query = sprintf("INSERT INTO %s (%s, %s, %s) VALUES ('%s', '%s', '%s')", |
455 | $this->table, |
456 | $this->user_field, |
457 | $this->key_field, |
458 | $this->val_field, |
459 | $this->dbh->quoteString($user), |
460 | $this->dbh->quoteString($key), |
461 | $this->dbh->quoteString($value)); |
462 | $res = $this->dbh->simpleQuery($query); |
463 | if (DB::isError($res)) { |
464 | $this->failQuery($res); |
465 | } |
370059dd |
466 | } |
2d367c68 |
467 | |
468 | return true; |
370059dd |
469 | } |
82474746 |
470 | |
ace4c62c |
471 | /** |
472 | * Fill preference cache array |
37b11ab0 |
473 | * |
ace4c62c |
474 | * @param string $user user name |
37b11ab0 |
475 | * |
ace4c62c |
476 | * @since 1.2.3 |
37b11ab0 |
477 | * |
ace4c62c |
478 | */ |
370059dd |
479 | function fillPrefsCache($user) { |
480 | global $prefs_cache; |
2d367c68 |
481 | |
b279d7f4 |
482 | if (!$this->open()) { |
483 | return; |
484 | } |
370059dd |
485 | |
486 | $prefs_cache = array(); |
99a6c222 |
487 | $query = sprintf("SELECT %s as prefkey, %s as prefval FROM %s ". |
488 | "WHERE %s = '%s'", |
489 | $this->key_field, |
490 | $this->val_field, |
370059dd |
491 | $this->table, |
99a6c222 |
492 | $this->user_field, |
370059dd |
493 | $this->dbh->quoteString($user)); |
494 | $res = $this->dbh->query($query); |
495 | if (DB::isError($res)) { |
496 | $this->failQuery($res); |
497 | } |
498 | |
499 | while ($row = $res->fetchRow(DB_FETCHMODE_ASSOC)) { |
500 | $prefs_cache[$row['prefkey']] = $row['prefval']; |
501 | } |
502 | } |
503 | |
370059dd |
504 | } /* end class dbPrefs */ |
82474746 |
505 | |
506 | |
4d30c1b7 |
507 | /** |
37b11ab0 |
508 | * Returns the value for the requested preference |
4d30c1b7 |
509 | * @ignore |
510 | */ |
37b11ab0 |
511 | function getPref($data_dir, $username, $pref_name, $default = '') { |
370059dd |
512 | $db = new dbPrefs; |
513 | if(isset($db->error)) { |
2d367c68 |
514 | printf( _("Preference database error (%s). Exiting abnormally"), |
370059dd |
515 | $db->error); |
2d367c68 |
516 | exit; |
370059dd |
517 | } |
518 | |
37b11ab0 |
519 | return $db->getKey($username, $pref_name, $default); |
370059dd |
520 | } |
521 | |
4d30c1b7 |
522 | /** |
37b11ab0 |
523 | * Remove the desired preference setting ($pref_name) |
4d30c1b7 |
524 | * @ignore |
525 | */ |
37b11ab0 |
526 | function removePref($data_dir, $username, $pref_name) { |
1fa62ab9 |
527 | global $prefs_cache; |
370059dd |
528 | $db = new dbPrefs; |
529 | if(isset($db->error)) { |
530 | $db->failQuery(); |
531 | } |
532 | |
37b11ab0 |
533 | $db->deleteKey($username, $pref_name); |
88a99543 |
534 | |
37b11ab0 |
535 | if (isset($prefs_cache[$pref_name])) { |
536 | unset($prefs_cache[$pref_name]); |
88a99543 |
537 | } |
538 | |
539 | sqsession_register($prefs_cache , 'prefs_cache'); |
370059dd |
540 | return; |
541 | } |
542 | |
4d30c1b7 |
543 | /** |
37b11ab0 |
544 | * Sets the desired preference setting ($pref_name) to whatever is in $value |
4d30c1b7 |
545 | * @ignore |
546 | */ |
37b11ab0 |
547 | function setPref($data_dir, $username, $pref_name, $value) { |
370059dd |
548 | global $prefs_cache; |
549 | |
37b11ab0 |
550 | if (isset($prefs_cache[$pref_name]) && ($prefs_cache[$pref_name] == $value)) { |
1fa62ab9 |
551 | return; |
370059dd |
552 | } |
553 | |
37b11ab0 |
554 | if ($value === '') { |
555 | removePref($data_dir, $username, $pref_name); |
370059dd |
556 | return; |
557 | } |
558 | |
559 | $db = new dbPrefs; |
560 | if(isset($db->error)) { |
561 | $db->failQuery(); |
562 | } |
563 | |
37b11ab0 |
564 | $db->setKey($username, $pref_name, $value); |
565 | $prefs_cache[$pref_name] = $value; |
370059dd |
566 | assert_options(ASSERT_ACTIVE, 1); |
567 | assert_options(ASSERT_BAIL, 1); |
37b11ab0 |
568 | assert ('$value == $prefs_cache[$pref_name]'); |
88a99543 |
569 | sqsession_register($prefs_cache , 'prefs_cache'); |
370059dd |
570 | return; |
571 | } |
572 | |
4d30c1b7 |
573 | /** |
574 | * This checks if the prefs are available |
575 | * @ignore |
576 | */ |
370059dd |
577 | function checkForPrefs($data_dir, $username) { |
578 | $db = new dbPrefs; |
579 | if(isset($db->error)) { |
580 | $db->failQuery(); |
581 | } |
582 | } |
583 | |
4d30c1b7 |
584 | /** |
585 | * Writes the Signature |
586 | * @ignore |
587 | */ |
37b11ab0 |
588 | function setSig($data_dir, $username, $number, $value) { |
16e5635d |
589 | if ($number == "g") { |
590 | $key = '___signature___'; |
591 | } else { |
592 | $key = sprintf('___sig%s___', $number); |
593 | } |
37b11ab0 |
594 | setPref($data_dir, $username, $key, $value); |
370059dd |
595 | return; |
596 | } |
597 | |
4d30c1b7 |
598 | /** |
599 | * Gets the signature |
600 | * @ignore |
601 | */ |
16e5635d |
602 | function getSig($data_dir, $username, $number) { |
16e5635d |
603 | if ($number == "g") { |
604 | $key = '___signature___'; |
605 | } else { |
606 | $key = sprintf('___sig%d___', $number); |
607 | } |
57f1d1c1 |
608 | return getPref($data_dir, $username, $key); |
370059dd |
609 | } |