| 1 | <?php |
| 2 | /*************************************************************************** |
| 3 | * Copyright (C) 2003-2010 Polytechnique.org * |
| 4 | * http://opensource.polytechnique.org/ * |
| 5 | * * |
| 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 2 of the License, or * |
| 9 | * (at your option) any later version. * |
| 10 | * * |
| 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. * |
| 15 | * * |
| 16 | * You should have received a copy of the GNU General Public License * |
| 17 | * along with this program; if not, write to the Free Software * |
| 18 | * Foundation, Inc., * |
| 19 | * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * |
| 20 | **************************************************************************/ |
| 21 | |
| 22 | class XDB |
| 23 | { |
| 24 | private static $mysqli = null; |
| 25 | |
| 26 | public static function connect() |
| 27 | { |
| 28 | global $globals; |
| 29 | self::$mysqli = new mysqli($globals->dbhost, $globals->dbuser, $globals->dbpwd, $globals->dbdb); |
| 30 | if ($globals->debug & DEBUG_BT) { |
| 31 | $bt = new PlBacktrace('MySQL'); |
| 32 | if (mysqli_connect_errno()) { |
| 33 | $bt->newEvent("MySQLI connection", 0, mysqli_connect_error()); |
| 34 | return false; |
| 35 | } |
| 36 | } |
| 37 | self::$mysqli->autocommit(true); |
| 38 | self::$mysqli->set_charset($globals->dbcharset); |
| 39 | return true; |
| 40 | } |
| 41 | |
| 42 | public static function prepare($args) |
| 43 | { |
| 44 | global $globals; |
| 45 | $query = array_map(Array('XDB', 'escape'), $args); |
| 46 | $query[0] = preg_replace('/#([a-z0-9]+)#/', $globals->dbprefix . '$1', $args[0]); |
| 47 | $query[0] = str_replace('%', '%%', $query[0]); |
| 48 | $query[0] = str_replace('{?}', '%s', $query[0]); |
| 49 | return call_user_func_array('sprintf', $query); |
| 50 | } |
| 51 | |
| 52 | public static function reformatQuery($query) |
| 53 | { |
| 54 | $query = preg_split("/\n\\s*/", trim($query)); |
| 55 | $length = 0; |
| 56 | foreach ($query as $key=>$line) { |
| 57 | $local = -2; |
| 58 | if (preg_match('/^([A-Z]+(?:\s+(?:JOIN|BY|FROM|INTO))?)\s+(.*)/u', $line, $matches) |
| 59 | && $matches[1] != 'AND' && $matches[1] != 'OR') |
| 60 | { |
| 61 | $local = strlen($matches[1]); |
| 62 | $line = $matches[1] . ' ' . $matches[2]; |
| 63 | $length = max($length, $local); |
| 64 | } |
| 65 | $query[$key] = array($line, $local); |
| 66 | } |
| 67 | $res = ''; |
| 68 | foreach ($query as $array) { |
| 69 | list($line, $local) = $array; |
| 70 | $local = max(0, $length - $local); |
| 71 | $res .= str_repeat(' ', $local) . $line . "\n"; |
| 72 | $length += 2 * (substr_count($line, '(') - substr_count($line, ')')); |
| 73 | } |
| 74 | return $res; |
| 75 | } |
| 76 | |
| 77 | public static function run($query) |
| 78 | { |
| 79 | global $globals; |
| 80 | |
| 81 | if (!self::$mysqli && !self::connect()) { |
| 82 | header($_SERVER['SERVER_PROTOCOL'] . ' 500 Internal Server Error'); |
| 83 | Platal::page()->kill('Impossible de se connecter à la base de données.'); |
| 84 | exit; |
| 85 | } |
| 86 | |
| 87 | if ($globals->debug & DEBUG_BT) { |
| 88 | $explain = array(); |
| 89 | if (strpos($query, 'FOUND_ROWS()') === false) { |
| 90 | $res = self::$mysqli->query("EXPLAIN $query"); |
| 91 | if ($res) { |
| 92 | while ($row = $res->fetch_assoc()) { |
| 93 | $explain[] = $row; |
| 94 | } |
| 95 | $res->free(); |
| 96 | } |
| 97 | } |
| 98 | PlBacktrace::$bt['MySQL']->start(XDB::reformatQuery($query)); |
| 99 | } |
| 100 | |
| 101 | $res = XDB::$mysqli->query($query); |
| 102 | |
| 103 | if ($globals->debug & DEBUG_BT) { |
| 104 | PlBacktrace::$bt['MySQL']->stop(@$res->num_rows ? $res->num_rows : self::$mysqli->affected_rows, |
| 105 | self::$mysqli->error, |
| 106 | $explain); |
| 107 | } |
| 108 | |
| 109 | if ($res === false) { |
| 110 | throw new XDBException(XDB::reformatQuery($query), XDB::$mysqli->error); |
| 111 | } |
| 112 | return $res; |
| 113 | } |
| 114 | |
| 115 | private static function queryv($query) |
| 116 | { |
| 117 | return new XDBResult(self::prepare($query)); |
| 118 | } |
| 119 | |
| 120 | public static function query() |
| 121 | { |
| 122 | return self::queryv(func_get_args()); |
| 123 | } |
| 124 | |
| 125 | public static function rawQuery($query) |
| 126 | { |
| 127 | return new XDBResult($query); |
| 128 | } |
| 129 | |
| 130 | public static function format() |
| 131 | { |
| 132 | return self::prepare(func_get_args()); |
| 133 | } |
| 134 | |
| 135 | // Produce the SQL statement for setting/unsetting a flag |
| 136 | public static function changeFlag($fieldname, $flagname, $state) |
| 137 | { |
| 138 | if ($state) { |
| 139 | return XDB::format($fieldname . ' = CONCAT({?}, \',\', ' . $fieldname . ')', $flagname); |
| 140 | } else { |
| 141 | return XDB::format($fieldname . ' = REPLACE(' . $fieldname . ', {?}, \'\')', $flagname); |
| 142 | } |
| 143 | } |
| 144 | |
| 145 | // Produce the SQL statement representing an array |
| 146 | public static function formatArray(array $array) |
| 147 | { |
| 148 | return self::escape($array); |
| 149 | } |
| 150 | |
| 151 | const WILDCARD_EXACT = 0x00; |
| 152 | const WILDCARD_PREFIX = 0x01; |
| 153 | const WILDCARD_SUFFIX = 0x02; |
| 154 | const WILDCARD_CONTAINS = 0x03; // WILDCARD_PREFIX | WILDCARD_SUFFIX |
| 155 | |
| 156 | // Produce a valid XDB argument that get formatted as a wildcard |
| 157 | // according to the given mode. |
| 158 | // |
| 159 | // Example: |
| 160 | // XDB::query("SELECT * FROM table WHERE field {?}", XDB::wildcard($text, WILDCARD_EXACT)); |
| 161 | public static function wildcard($mode, $value) |
| 162 | { |
| 163 | return new XDBWildcard($value, $mode); |
| 164 | } |
| 165 | |
| 166 | // Returns the SQL statement for a wildcard search. |
| 167 | public static function formatWildcards($mode, $text) |
| 168 | { |
| 169 | return XDB::wildcard($mode, $text)->format(); |
| 170 | } |
| 171 | |
| 172 | // Returns a FIELD(blah, 3, 1, 2) for use in an order with custom orders |
| 173 | public static function formatCustomOrder($field, $values) |
| 174 | { |
| 175 | return 'FIELD( ' . $field . ', ' . implode(', ', array_map(array('XDB', 'escape'), $values)) . ')'; |
| 176 | } |
| 177 | |
| 178 | public static function execute() |
| 179 | { |
| 180 | global $globals; |
| 181 | $args = func_get_args(); |
| 182 | if ($globals->mode != 'rw' && !strpos($args[0], 'logger')) { |
| 183 | return; |
| 184 | } |
| 185 | return self::run(XDB::prepare($args)); |
| 186 | } |
| 187 | |
| 188 | public static function rawExecute($query) |
| 189 | { |
| 190 | global $globals; |
| 191 | if ($globals->mode != 'rw') { |
| 192 | return; |
| 193 | } |
| 194 | return self::run($query); |
| 195 | } |
| 196 | |
| 197 | public static function iterator() |
| 198 | { |
| 199 | return new XDBIterator(self::prepare(func_get_args())); |
| 200 | } |
| 201 | |
| 202 | public static function rawIterator($query) |
| 203 | { |
| 204 | return new XDBIterator($query); |
| 205 | } |
| 206 | |
| 207 | public static function iterRow() |
| 208 | { |
| 209 | return new XDBIterator(self::prepare(func_get_args()), MYSQL_NUM); |
| 210 | } |
| 211 | |
| 212 | public static function rawIterRow($query) |
| 213 | { |
| 214 | return new XDBIterator($query, MYSQL_NUM); |
| 215 | } |
| 216 | |
| 217 | private static function findQuery($params, $default = array()) |
| 218 | { |
| 219 | for ($i = 0 ; $i < count($default) ; ++$i) { |
| 220 | $is_query = false; |
| 221 | foreach (array('insert', 'select', 'replace', 'delete', 'update') as $kwd) { |
| 222 | if (stripos($params[0], $kwd) !== false) { |
| 223 | $is_query = true; |
| 224 | break; |
| 225 | } |
| 226 | } |
| 227 | if ($is_query) { |
| 228 | break; |
| 229 | } else { |
| 230 | $default[$i] = array_shift($params); |
| 231 | } |
| 232 | } |
| 233 | return array($default, $params); |
| 234 | } |
| 235 | |
| 236 | /** Fetch all rows returned by the given query. |
| 237 | * This functions can take 2 optional arguments (cf XDBResult::fetchAllRow()). |
| 238 | * Optional arguments are given *before* the query. |
| 239 | */ |
| 240 | public static function fetchAllRow() |
| 241 | { |
| 242 | list($args, $query) = self::findQuery(func_get_args(), array(false, false)); |
| 243 | return self::queryv($query)->fetchAllRow($args[0], $args[1]); |
| 244 | } |
| 245 | |
| 246 | /** Fetch all rows returned by the given query. |
| 247 | * This functions can take 2 optional arguments (cf XDBResult::fetchAllAssoc()). |
| 248 | * Optional arguments are given *before* the query. |
| 249 | */ |
| 250 | public static function fetchAllAssoc() |
| 251 | { |
| 252 | list($args, $query) = self::findQuery(func_get_args(), array(false, false)); |
| 253 | return self::queryv($query)->fetchAllAssoc($args[0], $args[1]); |
| 254 | } |
| 255 | |
| 256 | public static function fetchOneCell() |
| 257 | { |
| 258 | list($args, $query) = self::findQuery(func_get_args()); |
| 259 | return self::queryv($query)->fetchOneCell(); |
| 260 | } |
| 261 | |
| 262 | public static function fetchOneRow() |
| 263 | { |
| 264 | list($args, $query) = self::findQuery(func_get_args()); |
| 265 | return self::queryv($query)->fetchOneRow(); |
| 266 | } |
| 267 | |
| 268 | public static function fetchOneAssoc() |
| 269 | { |
| 270 | list($args, $query) = self::findQuery(func_get_args()); |
| 271 | return self::queryv($query)->fetchOneAssoc(); |
| 272 | } |
| 273 | |
| 274 | /** Fetch a column from the result of the given query. |
| 275 | * This functions can take 1 optional arguments (cf XDBResult::fetchColumn()). |
| 276 | * Optional arguments are given *before* the query. |
| 277 | */ |
| 278 | public static function fetchColumn() |
| 279 | { |
| 280 | list($args, $query) = self::findQuery(func_get_args(), array(0)); |
| 281 | return self::queryv($query)->fetchColumn(); |
| 282 | } |
| 283 | |
| 284 | public static function insertId() |
| 285 | { |
| 286 | return self::$mysqli->insert_id; |
| 287 | } |
| 288 | |
| 289 | public static function errno() |
| 290 | { |
| 291 | return self::$mysqli->errno; |
| 292 | } |
| 293 | |
| 294 | public static function error() |
| 295 | { |
| 296 | return self::$mysqli->error; |
| 297 | } |
| 298 | |
| 299 | public static function affectedRows() |
| 300 | { |
| 301 | return self::$mysqli->affected_rows; |
| 302 | } |
| 303 | |
| 304 | public static function escape($var) |
| 305 | { |
| 306 | switch (gettype($var)) { |
| 307 | case 'boolean': |
| 308 | return $var ? 1 : 0; |
| 309 | |
| 310 | case 'integer': |
| 311 | case 'double': |
| 312 | case 'float': |
| 313 | return $var; |
| 314 | |
| 315 | case 'string': |
| 316 | return "'".addslashes($var)."'"; |
| 317 | |
| 318 | case 'NULL': |
| 319 | return 'NULL'; |
| 320 | |
| 321 | case 'object': |
| 322 | if ($var instanceof XDBFormat) { |
| 323 | return $var->format(); |
| 324 | } else { |
| 325 | return "'".addslashes(serialize($var))."'"; |
| 326 | } |
| 327 | |
| 328 | case 'array': |
| 329 | return '(' . implode(', ', array_map(array('XDB', 'escape'), $var)) . ')'; |
| 330 | |
| 331 | default: |
| 332 | die(var_export($var, true).' is not a valid for a database entry'); |
| 333 | } |
| 334 | } |
| 335 | } |
| 336 | |
| 337 | class XDBException extends PlException |
| 338 | { |
| 339 | public function __construct($query, $error) |
| 340 | { |
| 341 | if (strpos($query, 'INSERT') === false && strpos($query, 'UPDATE') === false |
| 342 | && strpos($query, 'REPLACE') === false && strpos($query, 'DELETE') === false) { |
| 343 | $text = 'Erreur lors de l\'interrogation de la base de données'; |
| 344 | } else { |
| 345 | $text = 'Erreur lors de l\'écriture dans la base de données'; |
| 346 | } |
| 347 | parent::__construct($text, $query . "\n" . $error); |
| 348 | } |
| 349 | } |
| 350 | |
| 351 | interface XDBFormat |
| 352 | { |
| 353 | public function format(); |
| 354 | } |
| 355 | |
| 356 | class XDBWildcard implements XDBFormat |
| 357 | { |
| 358 | private $value; |
| 359 | private $mode; |
| 360 | |
| 361 | public function __construct($value, $mode) |
| 362 | { |
| 363 | $this->value = $value; |
| 364 | $this->mode = $mode; |
| 365 | } |
| 366 | |
| 367 | public function format() |
| 368 | { |
| 369 | if ($this->mode == XDB::WILDCARD_EXACT) { |
| 370 | return XDB::format(' = {?}', $this->value); |
| 371 | } else { |
| 372 | $text = str_replace(array('%', '_'), array('\%', '\_'), $this->value); |
| 373 | if ($this->mode & XDB::WILDCARD_PREFIX) { |
| 374 | $text = $text . '%'; |
| 375 | } |
| 376 | if ($this->mode & XDB::WILDCARD_SUFFIX) { |
| 377 | $text = '%' . $text; |
| 378 | } |
| 379 | return XDB::format(" LIKE {?}", $text); |
| 380 | } |
| 381 | } |
| 382 | } |
| 383 | |
| 384 | |
| 385 | class XDBResult |
| 386 | { |
| 387 | private $res; |
| 388 | |
| 389 | public function __construct($query) |
| 390 | { |
| 391 | $this->res = XDB::run($query); |
| 392 | } |
| 393 | |
| 394 | public function free() |
| 395 | { |
| 396 | if ($this->res) { |
| 397 | $this->res->free(); |
| 398 | } |
| 399 | unset($this); |
| 400 | } |
| 401 | |
| 402 | protected function fetchRow() |
| 403 | { |
| 404 | return $this->res ? $this->res->fetch_row() : null; |
| 405 | } |
| 406 | |
| 407 | protected function fetchAssoc() |
| 408 | { |
| 409 | return $this->res ? $this->res->fetch_assoc() : null; |
| 410 | } |
| 411 | |
| 412 | public function fetchAllRow($id = false, $keep_array = false) |
| 413 | { |
| 414 | $result = Array(); |
| 415 | if (!$this->res) { |
| 416 | return $result; |
| 417 | } |
| 418 | while (($data = $this->res->fetch_row())) { |
| 419 | if ($id !== false) { |
| 420 | $key = $data[$id]; |
| 421 | unset($data[$id]); |
| 422 | if (!$keep_array && count($data) == 1) { |
| 423 | reset($data); |
| 424 | $result[$key] = current($data); |
| 425 | } else { |
| 426 | $result[$key] = $data; |
| 427 | } |
| 428 | } else { |
| 429 | $result[] = $data; |
| 430 | } |
| 431 | } |
| 432 | $this->free(); |
| 433 | return $result; |
| 434 | } |
| 435 | |
| 436 | public function fetchAllAssoc($id = false, $keep_array = false) |
| 437 | { |
| 438 | $result = Array(); |
| 439 | if (!$this->res) { |
| 440 | return $result; |
| 441 | } |
| 442 | while (($data = $this->res->fetch_assoc())) { |
| 443 | if ($id !== false) { |
| 444 | $key = $data[$id]; |
| 445 | unset($data[$id]); |
| 446 | if (!$keep_array && count($data) == 1) { |
| 447 | reset($data); |
| 448 | $result[$key] = current($data); |
| 449 | } else { |
| 450 | $result[$key] = $data; |
| 451 | } |
| 452 | } else { |
| 453 | $result[] = $data; |
| 454 | } |
| 455 | } |
| 456 | $this->free(); |
| 457 | return $result; |
| 458 | } |
| 459 | |
| 460 | public function fetchOneAssoc() |
| 461 | { |
| 462 | $tmp = $this->fetchAssoc(); |
| 463 | $this->free(); |
| 464 | return $tmp; |
| 465 | } |
| 466 | |
| 467 | public function fetchOneRow() |
| 468 | { |
| 469 | $tmp = $this->fetchRow(); |
| 470 | $this->free(); |
| 471 | return $tmp; |
| 472 | } |
| 473 | |
| 474 | public function fetchOneCell() |
| 475 | { |
| 476 | $tmp = $this->fetchRow(); |
| 477 | $this->free(); |
| 478 | return $tmp[0]; |
| 479 | } |
| 480 | |
| 481 | public function fetchColumn($key = 0) |
| 482 | { |
| 483 | $res = Array(); |
| 484 | if (is_numeric($key)) { |
| 485 | while($tmp = $this->fetchRow()) { |
| 486 | $res[] = $tmp[$key]; |
| 487 | } |
| 488 | } else { |
| 489 | while($tmp = $this->fetchAssoc()) { |
| 490 | $res[] = $tmp[$key]; |
| 491 | } |
| 492 | } |
| 493 | $this->free(); |
| 494 | return $res; |
| 495 | } |
| 496 | |
| 497 | public function fetchOneField() |
| 498 | { |
| 499 | return $this->res ? $this->res->fetch_field() : null; |
| 500 | } |
| 501 | |
| 502 | public function fetchFields() |
| 503 | { |
| 504 | $res = array(); |
| 505 | while ($res[] = $this->fetchOneField()); |
| 506 | return $res; |
| 507 | } |
| 508 | |
| 509 | public function numRows() |
| 510 | { |
| 511 | return $this->res ? $this->res->num_rows : 0; |
| 512 | } |
| 513 | |
| 514 | public function fieldCount() |
| 515 | { |
| 516 | return $this->res ? $this->res->field_count : 0; |
| 517 | } |
| 518 | } |
| 519 | |
| 520 | |
| 521 | class XDBIterator extends XDBResult implements PlIterator |
| 522 | { |
| 523 | private $result; |
| 524 | private $pos; |
| 525 | private $total; |
| 526 | private $fpos; |
| 527 | private $fields; |
| 528 | private $mode = MYSQL_ASSOC; |
| 529 | |
| 530 | public function __construct($query, $mode = MYSQL_ASSOC) |
| 531 | { |
| 532 | parent::__construct($query); |
| 533 | $this->pos = 0; |
| 534 | $this->total = $this->numRows(); |
| 535 | $this->fpost = 0; |
| 536 | $this->fields = $this->fieldCount(); |
| 537 | $this->mode = $mode; |
| 538 | } |
| 539 | |
| 540 | public function next() |
| 541 | { |
| 542 | $this->pos ++; |
| 543 | if ($this->pos > $this->total) { |
| 544 | $this->free(); |
| 545 | unset($this); |
| 546 | return null; |
| 547 | } |
| 548 | return $this->mode != MYSQL_ASSOC ? $this->fetchRow() : $this->fetchAssoc(); |
| 549 | } |
| 550 | |
| 551 | public function first() |
| 552 | { |
| 553 | return $this->pos == 1; |
| 554 | } |
| 555 | |
| 556 | public function last() |
| 557 | { |
| 558 | return $this->pos == $this->total; |
| 559 | } |
| 560 | |
| 561 | public function total() |
| 562 | { |
| 563 | return $this->total; |
| 564 | } |
| 565 | |
| 566 | public function nextField() |
| 567 | { |
| 568 | $this->fpos++; |
| 569 | if ($this->fpos > $this->fields) { |
| 570 | return null; |
| 571 | } |
| 572 | return $this->fetchOneField(); |
| 573 | } |
| 574 | |
| 575 | public function firstField() |
| 576 | { |
| 577 | return $this->fpos == 1; |
| 578 | } |
| 579 | |
| 580 | public function lastField() |
| 581 | { |
| 582 | return $this->fpos == $this->fields; |
| 583 | } |
| 584 | |
| 585 | public function totalFields() |
| 586 | { |
| 587 | return $this->fields; |
| 588 | } |
| 589 | } |
| 590 | |
| 591 | // vim:set et sw=4 sts=4 sws=4 foldmethod=marker enc=utf-8: |
| 592 | ?> |