| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * db_prefs.php |
| 5 | * |
| 6 | * Copyright (c) 1999-2004 The SquirrelMail Project Team |
| 7 | * Licensed under the GNU GPL. For full terms see the file COPYING. |
| 8 | * |
| 9 | * This contains functions for manipulating user preferences |
| 10 | * stored in a database, accessed though the Pear DB layer. |
| 11 | * |
| 12 | * Database: |
| 13 | * --------- |
| 14 | * |
| 15 | * The preferences table should have three columns: |
| 16 | * user char \ primary |
| 17 | * prefkey char / key |
| 18 | * prefval blob |
| 19 | * |
| 20 | * CREATE TABLE userprefs (user CHAR(128) NOT NULL DEFAULT '', |
| 21 | * prefkey CHAR(64) NOT NULL DEFAULT '', |
| 22 | * prefval BLOB NOT NULL DEFAULT '', |
| 23 | * primary key (user,prefkey)); |
| 24 | * |
| 25 | * Configuration of databasename, username and password is done |
| 26 | * by using conf.pl or the administrator plugin |
| 27 | * |
| 28 | * @version $Id$ |
| 29 | * @package squirrelmail |
| 30 | */ |
| 31 | |
| 32 | /** Unknown database */ |
| 33 | define('SMDB_UNKNOWN', 0); |
| 34 | /** MySQL */ |
| 35 | define('SMDB_MYSQL', 1); |
| 36 | /** PostgreSQL */ |
| 37 | define('SMDB_PGSQL', 2); |
| 38 | |
| 39 | require_once(SM_PATH . 'config/config.php'); |
| 40 | if (!include_once('DB.php')) { |
| 41 | // same error also in abook_database.php |
| 42 | require_once(SM_PATH . 'functions/display_messages.php'); |
| 43 | $error = _("Could not include PEAR database functions required for the database backend.") . "<br />\n"; |
| 44 | $error .= sprintf(_("Is PEAR installed, and is the include path set correctly to find %s?"), |
| 45 | '<tt>DB.php</tt>') . "<br />\n"; |
| 46 | $error .= _("Please contact your system administrator and report this error."); |
| 47 | error_box($error, $color); |
| 48 | exit; |
| 49 | } |
| 50 | |
| 51 | global $prefs_are_cached, $prefs_cache; |
| 52 | |
| 53 | /** |
| 54 | * @ignore |
| 55 | */ |
| 56 | function cachePrefValues($username) { |
| 57 | global $prefs_are_cached, $prefs_cache; |
| 58 | |
| 59 | sqgetGlobalVar('prefs_are_cached', $prefs_are_cached, SQ_SESSION ); |
| 60 | if ($prefs_are_cached) { |
| 61 | sqgetGlobalVar('prefs_cache', $prefs_cache, SQ_SESSION ); |
| 62 | return; |
| 63 | } |
| 64 | |
| 65 | sqsession_unregister('prefs_cache'); |
| 66 | sqsession_unregister('prefs_are_cached'); |
| 67 | |
| 68 | $db = new dbPrefs; |
| 69 | if(isset($db->error)) { |
| 70 | printf( _("Preference database error (%s). Exiting abnormally"), |
| 71 | $db->error); |
| 72 | exit; |
| 73 | } |
| 74 | |
| 75 | $db->fillPrefsCache($username); |
| 76 | if (isset($db->error)) { |
| 77 | printf( _("Preference database error (%s). Exiting abnormally"), |
| 78 | $db->error); |
| 79 | exit; |
| 80 | } |
| 81 | |
| 82 | $prefs_are_cached = true; |
| 83 | |
| 84 | sqsession_register($prefs_cache, 'prefs_cache'); |
| 85 | sqsession_register($prefs_are_cached, 'prefs_are_cached'); |
| 86 | } |
| 87 | |
| 88 | /** |
| 89 | * Completely undocumented class - someone document it! |
| 90 | * @package squirrelmail |
| 91 | */ |
| 92 | class dbPrefs { |
| 93 | var $table = 'userprefs'; |
| 94 | var $user_field = 'user'; |
| 95 | var $key_field = 'prefkey'; |
| 96 | var $val_field = 'prefval'; |
| 97 | |
| 98 | var $dbh = NULL; |
| 99 | var $error = NULL; |
| 100 | var $db_type = SMDB_UNKNOWN; |
| 101 | |
| 102 | var $default = Array('theme_default' => 0, |
| 103 | 'show_html_default' => '0'); |
| 104 | |
| 105 | function open() { |
| 106 | global $prefs_dsn, $prefs_table; |
| 107 | global $prefs_user_field, $prefs_key_field, $prefs_val_field; |
| 108 | |
| 109 | if(isset($this->dbh)) { |
| 110 | return true; |
| 111 | } |
| 112 | |
| 113 | if (preg_match('/^mysql/', $prefs_dsn)) { |
| 114 | $this->db_type = SMDB_MYSQL; |
| 115 | } elseif (preg_match('/^pgsql/', $prefs_dsn)) { |
| 116 | $this->db_type = SMDB_PGSQL; |
| 117 | } |
| 118 | |
| 119 | if (!empty($prefs_table)) { |
| 120 | $this->table = $prefs_table; |
| 121 | } |
| 122 | if (!empty($prefs_user_field)) { |
| 123 | $this->user_field = $prefs_user_field; |
| 124 | } |
| 125 | if (!empty($prefs_key_field)) { |
| 126 | $this->key_field = $prefs_key_field; |
| 127 | } |
| 128 | if (!empty($prefs_val_field)) { |
| 129 | $this->val_field = $prefs_val_field; |
| 130 | } |
| 131 | $dbh = DB::connect($prefs_dsn, true); |
| 132 | |
| 133 | if(DB::isError($dbh)) { |
| 134 | $this->error = DB::errorMessage($dbh); |
| 135 | return false; |
| 136 | } |
| 137 | |
| 138 | $this->dbh = $dbh; |
| 139 | return true; |
| 140 | } |
| 141 | |
| 142 | function failQuery($res = NULL) { |
| 143 | if($res == NULL) { |
| 144 | printf(_("Preference database error (%s). Exiting abnormally"), |
| 145 | $this->error); |
| 146 | } else { |
| 147 | printf(_("Preference database error (%s). Exiting abnormally"), |
| 148 | DB::errorMessage($res)); |
| 149 | } |
| 150 | exit; |
| 151 | } |
| 152 | |
| 153 | |
| 154 | function getKey($user, $key, $default = '') { |
| 155 | global $prefs_cache; |
| 156 | |
| 157 | cachePrefValues($user); |
| 158 | |
| 159 | if (isset($prefs_cache[$key])) { |
| 160 | return $prefs_cache[$key]; |
| 161 | } else { |
| 162 | if (isset($this->default[$key])) { |
| 163 | return $this->default[$key]; |
| 164 | } else { |
| 165 | return $default; |
| 166 | } |
| 167 | } |
| 168 | } |
| 169 | |
| 170 | function deleteKey($user, $key) { |
| 171 | global $prefs_cache; |
| 172 | |
| 173 | if (!$this->open()) { |
| 174 | return false; |
| 175 | } |
| 176 | $query = sprintf("DELETE FROM %s WHERE %s='%s' AND %s='%s'", |
| 177 | $this->table, |
| 178 | $this->user_field, |
| 179 | $this->dbh->quoteString($user), |
| 180 | $this->key_field, |
| 181 | $this->dbh->quoteString($key)); |
| 182 | |
| 183 | $res = $this->dbh->simpleQuery($query); |
| 184 | if(DB::isError($res)) { |
| 185 | $this->failQuery($res); |
| 186 | } |
| 187 | |
| 188 | unset($prefs_cache[$key]); |
| 189 | |
| 190 | return true; |
| 191 | } |
| 192 | |
| 193 | function setKey($user, $key, $value) { |
| 194 | if (!$this->open()) { |
| 195 | return false; |
| 196 | } |
| 197 | if ($this->db_type == SMDB_MYSQL) { |
| 198 | $query = sprintf("REPLACE INTO %s (%s, %s, %s) ". |
| 199 | "VALUES('%s','%s','%s')", |
| 200 | $this->table, |
| 201 | $this->user_field, |
| 202 | $this->key_field, |
| 203 | $this->val_field, |
| 204 | $this->dbh->quoteString($user), |
| 205 | $this->dbh->quoteString($key), |
| 206 | $this->dbh->quoteString($value)); |
| 207 | |
| 208 | $res = $this->dbh->simpleQuery($query); |
| 209 | if(DB::isError($res)) { |
| 210 | $this->failQuery($res); |
| 211 | } |
| 212 | } elseif ($this->db_type == SMDB_PGSQL) { |
| 213 | $this->dbh->simpleQuery("BEGIN TRANSACTION"); |
| 214 | $query = sprintf("DELETE FROM %s WHERE %s='%s' AND %s='%s'", |
| 215 | $this->table, |
| 216 | $this->user_field, |
| 217 | $this->dbh->quoteString($user), |
| 218 | $this->key_field, |
| 219 | $this->dbh->quoteString($key)); |
| 220 | $res = $this->dbh->simpleQuery($query); |
| 221 | if (DB::isError($res)) { |
| 222 | $this->dbh->simpleQuery("ROLLBACK TRANSACTION"); |
| 223 | $this->failQuery($res); |
| 224 | } |
| 225 | $query = sprintf("INSERT INTO %s (%s, %s, %s) VALUES ('%s', '%s', '%s')", |
| 226 | $this->table, |
| 227 | $this->user_field, |
| 228 | $this->key_field, |
| 229 | $this->val_field, |
| 230 | $this->dbh->quoteString($user), |
| 231 | $this->dbh->quoteString($key), |
| 232 | $this->dbh->quoteString($value)); |
| 233 | $res = $this->dbh->simpleQuery($query); |
| 234 | if (DB::isError($res)) { |
| 235 | $this->dbh->simpleQuery("ROLLBACK TRANSACTION"); |
| 236 | $this->failQuery($res); |
| 237 | } |
| 238 | $this->dbh->simpleQuery("COMMIT TRANSACTION"); |
| 239 | } else { |
| 240 | $query = sprintf("DELETE FROM %s WHERE %s='%s' AND %s='%s'", |
| 241 | $this->table, |
| 242 | $this->user_field, |
| 243 | $this->dbh->quoteString($user), |
| 244 | $this->key_field, |
| 245 | $this->dbh->quoteString($key)); |
| 246 | $res = $this->dbh->simpleQuery($query); |
| 247 | if (DB::isError($res)) { |
| 248 | $this->failQuery($res); |
| 249 | } |
| 250 | $query = sprintf("INSERT INTO %s (%s, %s, %s) VALUES ('%s', '%s', '%s')", |
| 251 | $this->table, |
| 252 | $this->user_field, |
| 253 | $this->key_field, |
| 254 | $this->val_field, |
| 255 | $this->dbh->quoteString($user), |
| 256 | $this->dbh->quoteString($key), |
| 257 | $this->dbh->quoteString($value)); |
| 258 | $res = $this->dbh->simpleQuery($query); |
| 259 | if (DB::isError($res)) { |
| 260 | $this->failQuery($res); |
| 261 | } |
| 262 | } |
| 263 | |
| 264 | return true; |
| 265 | } |
| 266 | |
| 267 | function fillPrefsCache($user) { |
| 268 | global $prefs_cache; |
| 269 | |
| 270 | if (!$this->open()) { |
| 271 | return; |
| 272 | } |
| 273 | |
| 274 | $prefs_cache = array(); |
| 275 | $query = sprintf("SELECT %s as prefkey, %s as prefval FROM %s ". |
| 276 | "WHERE %s = '%s'", |
| 277 | $this->key_field, |
| 278 | $this->val_field, |
| 279 | $this->table, |
| 280 | $this->user_field, |
| 281 | $this->dbh->quoteString($user)); |
| 282 | $res = $this->dbh->query($query); |
| 283 | if (DB::isError($res)) { |
| 284 | $this->failQuery($res); |
| 285 | } |
| 286 | |
| 287 | while ($row = $res->fetchRow(DB_FETCHMODE_ASSOC)) { |
| 288 | $prefs_cache[$row['prefkey']] = $row['prefval']; |
| 289 | } |
| 290 | } |
| 291 | |
| 292 | } /* end class dbPrefs */ |
| 293 | |
| 294 | |
| 295 | /** |
| 296 | * returns the value for the pref $string |
| 297 | * @ignore |
| 298 | */ |
| 299 | function getPref($data_dir, $username, $string, $default = '') { |
| 300 | $db = new dbPrefs; |
| 301 | if(isset($db->error)) { |
| 302 | printf( _("Preference database error (%s). Exiting abnormally"), |
| 303 | $db->error); |
| 304 | exit; |
| 305 | } |
| 306 | |
| 307 | return $db->getKey($username, $string, $default); |
| 308 | } |
| 309 | |
| 310 | /** |
| 311 | * Remove the pref $string |
| 312 | * @ignore |
| 313 | */ |
| 314 | function removePref($data_dir, $username, $string) { |
| 315 | global $prefs_cache; |
| 316 | $db = new dbPrefs; |
| 317 | if(isset($db->error)) { |
| 318 | $db->failQuery(); |
| 319 | } |
| 320 | |
| 321 | $db->deleteKey($username, $string); |
| 322 | |
| 323 | if (isset($prefs_cache[$string])) { |
| 324 | unset($prefs_cache[$string]); |
| 325 | } |
| 326 | |
| 327 | sqsession_register($prefs_cache , 'prefs_cache'); |
| 328 | return; |
| 329 | } |
| 330 | |
| 331 | /** |
| 332 | * sets the pref, $string, to $set_to |
| 333 | * @ignore |
| 334 | */ |
| 335 | function setPref($data_dir, $username, $string, $set_to) { |
| 336 | global $prefs_cache; |
| 337 | |
| 338 | if (isset($prefs_cache[$string]) && ($prefs_cache[$string] == $set_to)) { |
| 339 | return; |
| 340 | } |
| 341 | |
| 342 | if ($set_to === '') { |
| 343 | removePref($data_dir, $username, $string); |
| 344 | return; |
| 345 | } |
| 346 | |
| 347 | $db = new dbPrefs; |
| 348 | if(isset($db->error)) { |
| 349 | $db->failQuery(); |
| 350 | } |
| 351 | |
| 352 | $db->setKey($username, $string, $set_to); |
| 353 | $prefs_cache[$string] = $set_to; |
| 354 | assert_options(ASSERT_ACTIVE, 1); |
| 355 | assert_options(ASSERT_BAIL, 1); |
| 356 | assert ('$set_to == $prefs_cache[$string]'); |
| 357 | sqsession_register($prefs_cache , 'prefs_cache'); |
| 358 | return; |
| 359 | } |
| 360 | |
| 361 | /** |
| 362 | * This checks if the prefs are available |
| 363 | * @ignore |
| 364 | */ |
| 365 | function checkForPrefs($data_dir, $username) { |
| 366 | $db = new dbPrefs; |
| 367 | if(isset($db->error)) { |
| 368 | $db->failQuery(); |
| 369 | } |
| 370 | } |
| 371 | |
| 372 | /** |
| 373 | * Writes the Signature |
| 374 | * @ignore |
| 375 | */ |
| 376 | function setSig($data_dir, $username, $number, $string) { |
| 377 | if ($number == "g") { |
| 378 | $key = '___signature___'; |
| 379 | } else { |
| 380 | $key = sprintf('___sig%s___', $number); |
| 381 | } |
| 382 | setPref($data_dir, $username, $key, $string); |
| 383 | return; |
| 384 | } |
| 385 | |
| 386 | /** |
| 387 | * Gets the signature |
| 388 | * @ignore |
| 389 | */ |
| 390 | function getSig($data_dir, $username, $number) { |
| 391 | if ($number == "g") { |
| 392 | $key = '___signature___'; |
| 393 | } else { |
| 394 | $key = sprintf('___sig%d___', $number); |
| 395 | } |
| 396 | return getPref($data_dir, $username, $key); |
| 397 | } |
| 398 | |
| 399 | // vim: et ts=4 |
| 400 | ?> |