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| 1 | <?php |
| 2 | /** |
| 3 | * |
| 4 | * This file is part of the phpBB Forum Software package. |
| 5 | * |
| 6 | * @copyright (c) phpBB Limited <https://www.phpbb.com> |
| 7 | * @license GNU General Public License, version 2 (GPL-2.0) |
| 8 | * |
| 9 | * For full copyright and license information, please see |
| 10 | * the docs/CREDITS.txt file. |
| 11 | * |
| 12 | */ |
| 13 | |
| 14 | namespace phpbb\db\driver; |
| 15 | |
| 16 | /** |
| 17 | * Oracle Database Abstraction Layer |
| 18 | */ |
| 19 | class oracle extends \phpbb\db\driver\driver |
| 20 | { |
| 21 | var $connect_error = ''; |
| 22 | |
| 23 | /** @var array|false Last error result or false if no last error set */ |
| 24 | private $last_error_result = false; |
| 25 | |
| 26 | /** |
| 27 | * {@inheritDoc} |
| 28 | */ |
| 29 | function sql_connect($sqlserver, $sqluser, $sqlpassword, $database, $port = false, $persistency = false, $new_link = false) |
| 30 | { |
| 31 | $this->persistency = $persistency; |
| 32 | $this->user = $sqluser; |
| 33 | $this->server = $sqlserver . (($port) ? ':' . $port : ''); |
| 34 | $this->dbname = $database; |
| 35 | |
| 36 | $connect = $database; |
| 37 | |
| 38 | // support for "easy connect naming" |
| 39 | if ($sqlserver !== '' && $sqlserver !== '/') |
| 40 | { |
| 41 | if (substr($sqlserver, -1, 1) == '/') |
| 42 | { |
| 43 | $sqlserver == substr($sqlserver, 0, -1); |
| 44 | } |
| 45 | $connect = $sqlserver . (($port) ? ':' . $port : '') . '/' . $database; |
| 46 | } |
| 47 | |
| 48 | if ($new_link) |
| 49 | { |
| 50 | if (!function_exists('oci_new_connect')) |
| 51 | { |
| 52 | $this->connect_error = 'oci_new_connect function does not exist, is oci extension installed?'; |
| 53 | return $this->sql_error(''); |
| 54 | } |
| 55 | $this->db_connect_id = @oci_new_connect($this->user, $sqlpassword, $connect, 'UTF8'); |
| 56 | } |
| 57 | else if ($this->persistency) |
| 58 | { |
| 59 | if (!function_exists('oci_pconnect')) |
| 60 | { |
| 61 | $this->connect_error = 'oci_pconnect function does not exist, is oci extension installed?'; |
| 62 | return $this->sql_error(''); |
| 63 | } |
| 64 | $this->db_connect_id = @oci_pconnect($this->user, $sqlpassword, $connect, 'UTF8'); |
| 65 | } |
| 66 | else |
| 67 | { |
| 68 | if (!function_exists('oci_connect')) |
| 69 | { |
| 70 | $this->connect_error = 'oci_connect function does not exist, is oci extension installed?'; |
| 71 | return $this->sql_error(''); |
| 72 | } |
| 73 | $this->db_connect_id = @oci_connect($this->user, $sqlpassword, $connect, 'UTF8'); |
| 74 | } |
| 75 | |
| 76 | return ($this->db_connect_id) ? $this->db_connect_id : $this->sql_error(''); |
| 77 | } |
| 78 | |
| 79 | /** |
| 80 | * {@inheritDoc} |
| 81 | */ |
| 82 | function sql_server_info($raw = false, $use_cache = true) |
| 83 | { |
| 84 | /** |
| 85 | * force $use_cache false. I didn't research why the caching code below is commented out |
| 86 | * but I assume its because the Oracle extension provides a direct method to access it |
| 87 | * without a query. |
| 88 | */ |
| 89 | /* |
| 90 | global $cache; |
| 91 | |
| 92 | if (empty($cache) || ($this->sql_server_version = $cache->get('oracle_version')) === false) |
| 93 | { |
| 94 | $result = @ociparse($this->db_connect_id, 'SELECT * FROM v$version WHERE banner LIKE \'Oracle%\''); |
| 95 | @ociexecute($result, OCI_DEFAULT); |
| 96 | @ocicommit($this->db_connect_id); |
| 97 | |
| 98 | $row = array(); |
| 99 | @ocifetchinto($result, $row, OCI_ASSOC + OCI_RETURN_NULLS); |
| 100 | @ocifreestatement($result); |
| 101 | $this->sql_server_version = trim($row['BANNER']); |
| 102 | |
| 103 | $cache->put('oracle_version', $this->sql_server_version); |
| 104 | } |
| 105 | */ |
| 106 | $this->sql_server_version = @oci_server_version($this->db_connect_id); |
| 107 | |
| 108 | return $this->sql_server_version; |
| 109 | } |
| 110 | |
| 111 | /** |
| 112 | * {@inheritDoc} |
| 113 | */ |
| 114 | protected function _sql_transaction(string $status = 'begin'): bool |
| 115 | { |
| 116 | switch ($status) |
| 117 | { |
| 118 | case 'begin': |
| 119 | return true; |
| 120 | |
| 121 | case 'commit': |
| 122 | return @oci_commit($this->db_connect_id); |
| 123 | |
| 124 | case 'rollback': |
| 125 | return @oci_rollback($this->db_connect_id); |
| 126 | } |
| 127 | |
| 128 | return true; |
| 129 | } |
| 130 | |
| 131 | /** |
| 132 | * Oracle specific code to handle the fact that it does not compare columns properly |
| 133 | * @access private |
| 134 | */ |
| 135 | function _rewrite_col_compare($args) |
| 136 | { |
| 137 | if (count($args) == 4) |
| 138 | { |
| 139 | if ($args[2] == '=') |
| 140 | { |
| 141 | return '(' . $args[0] . ' OR (' . $args[1] . ' is NULL AND ' . $args[3] . ' is NULL))'; |
| 142 | } |
| 143 | else if ($args[2] == '<>') |
| 144 | { |
| 145 | // really just a fancy way of saying foo <> bar or (foo is NULL XOR bar is NULL) but SQL has no XOR :P |
| 146 | return '(' . $args[0] . ' OR ((' . $args[1] . ' is NULL AND ' . $args[3] . ' is NOT NULL) OR (' . $args[1] . ' is NOT NULL AND ' . $args[3] . ' is NULL)))'; |
| 147 | } |
| 148 | } |
| 149 | else |
| 150 | { |
| 151 | return $this->_rewrite_where($args[0]); |
| 152 | } |
| 153 | } |
| 154 | |
| 155 | /** |
| 156 | * Oracle specific code to handle it's lack of sanity |
| 157 | * @access private |
| 158 | */ |
| 159 | function _rewrite_where($where_clause) |
| 160 | { |
| 161 | preg_match_all('/\s*(AND|OR)?\s*([\w_.()]++)\s*(?:(=|<[=>]?|>=?|LIKE)\s*((?>\'(?>[^\']++|\'\')*+\'|[\d\-.()]+))|((NOT )?IN\s*\((?>\'(?>[^\']++|\'\')*+\',? ?|[\d\-.]+,? ?)*+\)))/', $where_clause, $result, PREG_SET_ORDER); |
| 162 | $out = ''; |
| 163 | foreach ($result as $val) |
| 164 | { |
| 165 | if (!isset($val[5])) |
| 166 | { |
| 167 | if ($val[4] !== "''") |
| 168 | { |
| 169 | $out .= $val[0]; |
| 170 | } |
| 171 | else |
| 172 | { |
| 173 | $out .= ' ' . $val[1] . ' ' . $val[2]; |
| 174 | if ($val[3] == '=') |
| 175 | { |
| 176 | $out .= ' is NULL'; |
| 177 | } |
| 178 | else if ($val[3] == '<>') |
| 179 | { |
| 180 | $out .= ' is NOT NULL'; |
| 181 | } |
| 182 | } |
| 183 | } |
| 184 | else |
| 185 | { |
| 186 | $in_clause = array(); |
| 187 | $sub_exp = substr($val[5], strpos($val[5], '(') + 1, -1); |
| 188 | $extra = false; |
| 189 | preg_match_all('/\'(?>[^\']++|\'\')*+\'|[\d\-.]++/', $sub_exp, $sub_vals, PREG_PATTERN_ORDER); |
| 190 | $i = 0; |
| 191 | foreach ($sub_vals[0] as $sub_val) |
| 192 | { |
| 193 | // two things: |
| 194 | // 1) This determines if an empty string was in the IN clausing, making us turn it into a NULL comparison |
| 195 | // 2) This fixes the 1000 list limit that Oracle has (ORA-01795) |
| 196 | if ($sub_val !== "''") |
| 197 | { |
| 198 | $in_clause[(int) $i++/1000][] = $sub_val; |
| 199 | } |
| 200 | else |
| 201 | { |
| 202 | $extra = true; |
| 203 | } |
| 204 | } |
| 205 | if (!$extra && $i < 1000) |
| 206 | { |
| 207 | $out .= $val[0]; |
| 208 | } |
| 209 | else |
| 210 | { |
| 211 | $out .= ' ' . $val[1] . '('; |
| 212 | $in_array = array(); |
| 213 | |
| 214 | // constuct each IN() clause |
| 215 | foreach ($in_clause as $in_values) |
| 216 | { |
| 217 | $in_array[] = $val[2] . ' ' . (isset($val[6]) ? $val[6] : '') . 'IN(' . implode(', ', $in_values) . ')'; |
| 218 | } |
| 219 | |
| 220 | // Join the IN() clauses against a few ORs (IN is just a nicer OR anyway) |
| 221 | $out .= implode(' OR ', $in_array); |
| 222 | |
| 223 | // handle the empty string case |
| 224 | if ($extra) |
| 225 | { |
| 226 | $out .= ' OR ' . $val[2] . ' is ' . (isset($val[6]) ? $val[6] : '') . 'NULL'; |
| 227 | } |
| 228 | $out .= ')'; |
| 229 | |
| 230 | unset($in_array, $in_clause); |
| 231 | } |
| 232 | } |
| 233 | } |
| 234 | |
| 235 | return $out; |
| 236 | } |
| 237 | |
| 238 | /** |
| 239 | * {@inheritDoc} |
| 240 | */ |
| 241 | function sql_query($query = '', $cache_ttl = 0) |
| 242 | { |
| 243 | if ($query != '') |
| 244 | { |
| 245 | global $cache; |
| 246 | |
| 247 | if ($this->debug_sql_explain) |
| 248 | { |
| 249 | $this->sql_report('start', $query); |
| 250 | } |
| 251 | else if ($this->debug_load_time) |
| 252 | { |
| 253 | $this->curtime = microtime(true); |
| 254 | } |
| 255 | |
| 256 | $this->last_query_text = $query; |
| 257 | $this->query_result = ($cache && $cache_ttl) ? $cache->sql_load($query) : false; |
| 258 | $this->sql_add_num_queries($this->query_result); |
| 259 | |
| 260 | if ($this->query_result === false) |
| 261 | { |
| 262 | $in_transaction = false; |
| 263 | if (!$this->transaction) |
| 264 | { |
| 265 | $this->sql_transaction('begin'); |
| 266 | } |
| 267 | else |
| 268 | { |
| 269 | $in_transaction = true; |
| 270 | } |
| 271 | |
| 272 | $array = array(); |
| 273 | |
| 274 | // We overcome Oracle's 4000 char limit by binding vars |
| 275 | if (strlen($query) > 4000) |
| 276 | { |
| 277 | if (preg_match('/^(INSERT INTO[^(]++)\\(([^()]+)\\) VALUES[^(]++\\((.*?)\\)$/sU', $query, $regs)) |
| 278 | { |
| 279 | if (strlen($regs[3]) > 4000) |
| 280 | { |
| 281 | $cols = explode(', ', $regs[2]); |
| 282 | |
| 283 | preg_match_all('/\'(?:[^\']++|\'\')*+\'|[\d\-.]+/', $regs[3], $vals, PREG_PATTERN_ORDER); |
| 284 | |
| 285 | /* The code inside this comment block breaks clob handling, but does allow the |
| 286 | database restore script to work. If you want to allow no posts longer than 4KB |
| 287 | and/or need the db restore script, uncomment this. |
| 288 | |
| 289 | |
| 290 | if (count($cols) !== count($vals)) |
| 291 | { |
| 292 | // Try to replace some common data we know is from our restore script or from other sources |
| 293 | $regs[3] = str_replace("'||chr(47)||'", '/', $regs[3]); |
| 294 | $_vals = explode(', ', $regs[3]); |
| 295 | |
| 296 | $vals = array(); |
| 297 | $is_in_val = false; |
| 298 | $i = 0; |
| 299 | $string = ''; |
| 300 | |
| 301 | foreach ($_vals as $value) |
| 302 | { |
| 303 | if (strpos($value, "'") === false && !$is_in_val) |
| 304 | { |
| 305 | $vals[$i++] = $value; |
| 306 | continue; |
| 307 | } |
| 308 | |
| 309 | if (substr($value, -1) === "'") |
| 310 | { |
| 311 | $vals[$i] = $string . (($is_in_val) ? ', ' : '') . $value; |
| 312 | $string = ''; |
| 313 | $is_in_val = false; |
| 314 | |
| 315 | if ($vals[$i][0] !== "'") |
| 316 | { |
| 317 | $vals[$i] = "''" . $vals[$i]; |
| 318 | } |
| 319 | $i++; |
| 320 | continue; |
| 321 | } |
| 322 | else |
| 323 | { |
| 324 | $string .= (($is_in_val) ? ', ' : '') . $value; |
| 325 | $is_in_val = true; |
| 326 | } |
| 327 | } |
| 328 | |
| 329 | if ($string) |
| 330 | { |
| 331 | // New value if cols != value |
| 332 | $vals[(count($cols) !== count($vals)) ? $i : $i - 1] .= $string; |
| 333 | } |
| 334 | |
| 335 | $vals = array(0 => $vals); |
| 336 | } |
| 337 | */ |
| 338 | |
| 339 | $inserts = $vals[0]; |
| 340 | unset($vals); |
| 341 | |
| 342 | foreach ($inserts as $key => $value) |
| 343 | { |
| 344 | if (!empty($value) && $value[0] === "'" && strlen($value) > 4002) // check to see if this thing is greater than the max + 'x2 |
| 345 | { |
| 346 | $inserts[$key] = ':' . strtoupper($cols[$key]); |
| 347 | $array[$inserts[$key]] = str_replace("''", "'", substr($value, 1, -1)); |
| 348 | } |
| 349 | } |
| 350 | |
| 351 | $query = $regs[1] . '(' . $regs[2] . ') VALUES (' . implode(', ', $inserts) . ')'; |
| 352 | } |
| 353 | } |
| 354 | else if (preg_match_all('/^(UPDATE [\\w_]++\\s+SET )([\\w_]++\\s*=\\s*(?:\'(?:[^\']++|\'\')*+\'|[\d\-.]+)(?:,\\s*[\\w_]++\\s*=\\s*(?:\'(?:[^\']++|\'\')*+\'|[\d\-.]+))*+)\\s+(WHERE.*)$/s', $query, $data, PREG_SET_ORDER)) |
| 355 | { |
| 356 | if (strlen($data[0][2]) > 4000) |
| 357 | { |
| 358 | $update = $data[0][1]; |
| 359 | $where = $data[0][3]; |
| 360 | preg_match_all('/([\\w_]++)\\s*=\\s*(\'(?:[^\']++|\'\')*+\'|[\d\-.]++)/', $data[0][2], $temp, PREG_SET_ORDER); |
| 361 | unset($data); |
| 362 | |
| 363 | $cols = array(); |
| 364 | foreach ($temp as $value) |
| 365 | { |
| 366 | if (!empty($value[2]) && $value[2][0] === "'" && strlen($value[2]) > 4002) // check to see if this thing is greater than the max + 'x2 |
| 367 | { |
| 368 | $cols[] = $value[1] . '=:' . strtoupper($value[1]); |
| 369 | $array[$value[1]] = str_replace("''", "'", substr($value[2], 1, -1)); |
| 370 | } |
| 371 | else |
| 372 | { |
| 373 | $cols[] = $value[1] . '=' . $value[2]; |
| 374 | } |
| 375 | } |
| 376 | |
| 377 | $query = $update . implode(', ', $cols) . ' ' . $where; |
| 378 | unset($cols); |
| 379 | } |
| 380 | } |
| 381 | } |
| 382 | |
| 383 | switch (substr($query, 0, 6)) |
| 384 | { |
| 385 | case 'DELETE': |
| 386 | if (preg_match('/^(DELETE FROM [\w_]++ WHERE)((?:\s*(?:AND|OR)?\s*[\w_]+\s*(?:(?:=|<>)\s*(?>\'(?>[^\']++|\'\')*+\'|[\d\-.]+)|(?:NOT )?IN\s*\((?>\'(?>[^\']++|\'\')*+\',? ?|[\d\-.]+,? ?)*+\)))*+)$/', $query, $regs)) |
| 387 | { |
| 388 | $query = $regs[1] . $this->_rewrite_where($regs[2]); |
| 389 | unset($regs); |
| 390 | } |
| 391 | break; |
| 392 | |
| 393 | case 'UPDATE': |
| 394 | if (preg_match('/^(UPDATE [\\w_]++\\s+SET [\\w_]+\s*=\s*(?:\'(?:[^\']++|\'\')*+\'|[\d\-.]++|:\w++)(?:, [\\w_]+\s*=\s*(?:\'(?:[^\']++|\'\')*+\'|[\d\-.]++|:\w++))*+\\s+WHERE)(.*)$/s', $query, $regs)) |
| 395 | { |
| 396 | $query = $regs[1] . $this->_rewrite_where($regs[2]); |
| 397 | unset($regs); |
| 398 | } |
| 399 | break; |
| 400 | |
| 401 | case 'SELECT': |
| 402 | $query = preg_replace_callback('/([\w_.]++)\s*(?:(=|<>)\s*(?>\'(?>[^\']++|\'\')*+\'|[\d\-.]++|([\w_.]++))|(?:NOT )?IN\s*\((?>\'(?>[^\']++|\'\')*+\',? ?|[\d\-.]++,? ?)*+\))/', array($this, '_rewrite_col_compare'), $query); |
| 403 | break; |
| 404 | } |
| 405 | |
| 406 | $this->query_result = @oci_parse($this->db_connect_id, $query); |
| 407 | |
| 408 | foreach ($array as $key => $value) |
| 409 | { |
| 410 | @oci_bind_by_name($this->query_result, $key, $array[$key], -1); |
| 411 | } |
| 412 | |
| 413 | $success = @oci_execute($this->query_result, OCI_DEFAULT); |
| 414 | |
| 415 | if (!$success) |
| 416 | { |
| 417 | $this->sql_error($query); |
| 418 | $this->query_result = false; |
| 419 | } |
| 420 | else |
| 421 | { |
| 422 | if (!$in_transaction) |
| 423 | { |
| 424 | $this->sql_transaction('commit'); |
| 425 | } |
| 426 | } |
| 427 | |
| 428 | if ($this->debug_sql_explain) |
| 429 | { |
| 430 | $this->sql_report('stop', $query); |
| 431 | } |
| 432 | else if ($this->debug_load_time) |
| 433 | { |
| 434 | $this->sql_time += microtime(true) - $this->curtime; |
| 435 | } |
| 436 | |
| 437 | if (!$this->query_result) |
| 438 | { |
| 439 | return false; |
| 440 | } |
| 441 | |
| 442 | $safe_query_id = $this->clean_query_id($this->query_result); |
| 443 | |
| 444 | if ($cache && $cache_ttl) |
| 445 | { |
| 446 | $this->open_queries[$safe_query_id] = $this->query_result; |
| 447 | $this->query_result = $cache->sql_save($this, $query, $this->query_result, $cache_ttl); |
| 448 | } |
| 449 | else if (strpos($query, 'SELECT') === 0) |
| 450 | { |
| 451 | $this->open_queries[$safe_query_id] = $this->query_result; |
| 452 | } |
| 453 | } |
| 454 | else if ($this->debug_sql_explain) |
| 455 | { |
| 456 | $this->sql_report('fromcache', $query); |
| 457 | } |
| 458 | } |
| 459 | else |
| 460 | { |
| 461 | return false; |
| 462 | } |
| 463 | |
| 464 | return $this->query_result; |
| 465 | } |
| 466 | |
| 467 | /** |
| 468 | * {@inheritDoc} |
| 469 | */ |
| 470 | protected function _sql_query_limit(string $query, int $total, int $offset = 0, int $cache_ttl = 0) |
| 471 | { |
| 472 | $this->query_result = false; |
| 473 | |
| 474 | $query = 'SELECT * FROM (SELECT /*+ FIRST_ROWS */ rownum AS xrownum, a.* FROM (' . $query . ') a WHERE rownum <= ' . ($offset + $total) . ') WHERE xrownum >= ' . $offset; |
| 475 | |
| 476 | return $this->sql_query($query, $cache_ttl); |
| 477 | } |
| 478 | |
| 479 | /** |
| 480 | * {@inheritDoc} |
| 481 | */ |
| 482 | function sql_affectedrows() |
| 483 | { |
| 484 | return ($this->query_result) ? @oci_num_rows($this->query_result) : false; |
| 485 | } |
| 486 | |
| 487 | /** |
| 488 | * {@inheritDoc} |
| 489 | */ |
| 490 | function sql_fetchrow($query_id = false) |
| 491 | { |
| 492 | global $cache; |
| 493 | |
| 494 | if ($query_id === false) |
| 495 | { |
| 496 | $query_id = $this->query_result; |
| 497 | } |
| 498 | |
| 499 | $safe_query_id = $this->clean_query_id($query_id); |
| 500 | if ($cache && $cache->sql_exists($safe_query_id)) |
| 501 | { |
| 502 | return $cache->sql_fetchrow($safe_query_id); |
| 503 | } |
| 504 | |
| 505 | if ($query_id) |
| 506 | { |
| 507 | if (!$row = oci_fetch_array($query_id, OCI_ASSOC + OCI_RETURN_NULLS)) |
| 508 | { |
| 509 | return false; |
| 510 | } |
| 511 | |
| 512 | $result_row = array(); |
| 513 | foreach ($row as $key => $value) |
| 514 | { |
| 515 | // Oracle treats empty strings as null |
| 516 | if (is_null($value)) |
| 517 | { |
| 518 | $value = ''; |
| 519 | } |
| 520 | |
| 521 | // OCI->CLOB? |
| 522 | if (is_object($value)) |
| 523 | { |
| 524 | $value = $value->load(); |
| 525 | } |
| 526 | |
| 527 | $result_row[strtolower($key)] = $value; |
| 528 | } |
| 529 | |
| 530 | return $result_row; |
| 531 | } |
| 532 | |
| 533 | return false; |
| 534 | } |
| 535 | |
| 536 | /** |
| 537 | * {@inheritDoc} |
| 538 | */ |
| 539 | function sql_rowseek($rownum, &$query_id) |
| 540 | { |
| 541 | global $cache; |
| 542 | |
| 543 | if ($query_id === false) |
| 544 | { |
| 545 | $query_id = $this->query_result; |
| 546 | } |
| 547 | |
| 548 | $safe_query_id = $this->clean_query_id($query_id); |
| 549 | if ($cache && $cache->sql_exists($safe_query_id)) |
| 550 | { |
| 551 | return $cache->sql_rowseek($rownum, $safe_query_id); |
| 552 | } |
| 553 | |
| 554 | if (!$query_id) |
| 555 | { |
| 556 | return false; |
| 557 | } |
| 558 | |
| 559 | // Reset internal pointer |
| 560 | @oci_execute($query_id, OCI_DEFAULT); |
| 561 | |
| 562 | // We do not fetch the row for rownum == 0 because then the next resultset would be the second row |
| 563 | for ($i = 0; $i < $rownum; $i++) |
| 564 | { |
| 565 | if (!$this->sql_fetchrow($query_id)) |
| 566 | { |
| 567 | return false; |
| 568 | } |
| 569 | } |
| 570 | |
| 571 | return true; |
| 572 | } |
| 573 | |
| 574 | /** |
| 575 | * {@inheritdoc} |
| 576 | */ |
| 577 | public function sql_last_inserted_id() |
| 578 | { |
| 579 | $query_id = $this->query_result; |
| 580 | |
| 581 | if ($query_id !== false && $this->last_query_text != '') |
| 582 | { |
| 583 | if (preg_match('#^INSERT[\t\n ]+INTO[\t\n ]+([a-z0-9\_\-]+)#is', $this->last_query_text, $tablename)) |
| 584 | { |
| 585 | $query = 'SELECT ' . $tablename[1] . '_seq.currval FROM DUAL'; |
| 586 | $stmt = @oci_parse($this->db_connect_id, $query); |
| 587 | if ($stmt) |
| 588 | { |
| 589 | $success = @oci_execute($stmt, OCI_DEFAULT); |
| 590 | |
| 591 | if ($success) |
| 592 | { |
| 593 | $temp_array = oci_fetch_array($stmt, OCI_ASSOC + OCI_RETURN_NULLS); |
| 594 | oci_free_statement($stmt); |
| 595 | |
| 596 | if (!empty($temp_array)) |
| 597 | { |
| 598 | return $temp_array['CURRVAL']; |
| 599 | } |
| 600 | else |
| 601 | { |
| 602 | return false; |
| 603 | } |
| 604 | } |
| 605 | } |
| 606 | } |
| 607 | } |
| 608 | |
| 609 | return false; |
| 610 | } |
| 611 | |
| 612 | /** |
| 613 | * {@inheritDoc} |
| 614 | */ |
| 615 | function sql_freeresult($query_id = false) |
| 616 | { |
| 617 | global $cache; |
| 618 | |
| 619 | if ($query_id === false) |
| 620 | { |
| 621 | $query_id = $this->query_result; |
| 622 | } |
| 623 | |
| 624 | $safe_query_id = $this->clean_query_id($query_id); |
| 625 | if ($cache && $cache->sql_exists($safe_query_id)) |
| 626 | { |
| 627 | $cache->sql_freeresult($safe_query_id); |
| 628 | } |
| 629 | else if (isset($this->open_queries[$safe_query_id])) |
| 630 | { |
| 631 | unset($this->open_queries[$safe_query_id]); |
| 632 | oci_free_statement($query_id); |
| 633 | } |
| 634 | } |
| 635 | |
| 636 | /** |
| 637 | * {@inheritDoc} |
| 638 | */ |
| 639 | function sql_escape($msg) |
| 640 | { |
| 641 | return str_replace(array("'", "\0"), array("''", ''), $msg); |
| 642 | } |
| 643 | |
| 644 | /** |
| 645 | * {@inheritDoc} |
| 646 | */ |
| 647 | protected function _sql_like_expression(string $expression): string |
| 648 | { |
| 649 | return $expression . " ESCAPE '\\'"; |
| 650 | } |
| 651 | |
| 652 | /** |
| 653 | * {@inheritDoc} |
| 654 | */ |
| 655 | protected function _sql_not_like_expression(string $expression): string |
| 656 | { |
| 657 | return $expression . " ESCAPE '\\'"; |
| 658 | } |
| 659 | |
| 660 | function _sql_bit_and($column_name, $bit, $compare = '') |
| 661 | { |
| 662 | return 'BITAND(' . $column_name . ', ' . (1 << $bit) . ')' . (($compare) ? ' ' . $compare : ''); |
| 663 | } |
| 664 | |
| 665 | function _sql_bit_or($column_name, $bit, $compare = '') |
| 666 | { |
| 667 | return 'BITOR(' . $column_name . ', ' . (1 << $bit) . ')' . (($compare) ? ' ' . $compare : ''); |
| 668 | } |
| 669 | |
| 670 | /** |
| 671 | * {@inheritDoc} |
| 672 | */ |
| 673 | protected function _sql_error(): array |
| 674 | { |
| 675 | if (function_exists('oci_error')) |
| 676 | { |
| 677 | $error = @oci_error(); |
| 678 | $error = (!$error) ? @oci_error($this->query_result) : $error; |
| 679 | $error = (!$error) ? @oci_error($this->db_connect_id) : $error; |
| 680 | |
| 681 | if ($error) |
| 682 | { |
| 683 | $this->last_error_result = $error; |
| 684 | } |
| 685 | else |
| 686 | { |
| 687 | $error = $this->last_error_result ?: ['message' => '', 'code' => '']; |
| 688 | } |
| 689 | } |
| 690 | else |
| 691 | { |
| 692 | $error = array( |
| 693 | 'message' => $this->connect_error, |
| 694 | 'code' => '', |
| 695 | ); |
| 696 | } |
| 697 | |
| 698 | return $error; |
| 699 | } |
| 700 | |
| 701 | /** |
| 702 | * {@inheritDoc} |
| 703 | */ |
| 704 | protected function _sql_close(): bool |
| 705 | { |
| 706 | return @oci_close($this->db_connect_id); |
| 707 | } |
| 708 | |
| 709 | /** |
| 710 | * {@inheritDoc} |
| 711 | */ |
| 712 | protected function _sql_report(string $mode, string $query = ''): void |
| 713 | { |
| 714 | switch ($mode) |
| 715 | { |
| 716 | case 'start': |
| 717 | |
| 718 | $html_table = false; |
| 719 | |
| 720 | // Grab a plan table, any will do |
| 721 | $sql = "SELECT table_name |
| 722 | FROM USER_TABLES |
| 723 | WHERE table_name LIKE '%PLAN_TABLE%'"; |
| 724 | $stmt = oci_parse($this->db_connect_id, $sql); |
| 725 | oci_execute($stmt); |
| 726 | |
| 727 | if ($result = oci_fetch_array($stmt, OCI_ASSOC + OCI_RETURN_NULLS)) |
| 728 | { |
| 729 | $table = $result['TABLE_NAME']; |
| 730 | |
| 731 | // This is the statement_id that will allow us to track the plan |
| 732 | $statement_id = substr(md5($query), 0, 30); |
| 733 | |
| 734 | // Remove any stale plans |
| 735 | $stmt2 = oci_parse($this->db_connect_id, "DELETE FROM $table WHERE statement_id='$statement_id'"); |
| 736 | oci_execute($stmt2); |
| 737 | oci_free_statement($stmt2); |
| 738 | |
| 739 | // Explain the plan |
| 740 | $sql = "EXPLAIN PLAN |
| 741 | SET STATEMENT_ID = '$statement_id' |
| 742 | FOR $query"; |
| 743 | $stmt2 = oci_parse($this->db_connect_id, $sql); |
| 744 | oci_execute($stmt2); |
| 745 | oci_free_statement($stmt2); |
| 746 | |
| 747 | // Get the data from the plan |
| 748 | $sql = "SELECT operation, options, object_name, object_type, cardinality, cost |
| 749 | FROM plan_table |
| 750 | START WITH id = 0 AND statement_id = '$statement_id' |
| 751 | CONNECT BY PRIOR id = parent_id |
| 752 | AND statement_id = '$statement_id'"; |
| 753 | $stmt2 = oci_parse($this->db_connect_id, $sql); |
| 754 | oci_execute($stmt2); |
| 755 | |
| 756 | while ($row = oci_fetch_array($stmt2, OCI_ASSOC + OCI_RETURN_NULLS)) |
| 757 | { |
| 758 | $html_table = $this->sql_report('add_select_row', $query, $html_table, $row); |
| 759 | } |
| 760 | |
| 761 | oci_free_statement($stmt2); |
| 762 | |
| 763 | // Remove the plan we just made, we delete them on request anyway |
| 764 | $stmt2 = oci_parse($this->db_connect_id, "DELETE FROM $table WHERE statement_id='$statement_id'"); |
| 765 | oci_execute($stmt2); |
| 766 | oci_free_statement($stmt2); |
| 767 | } |
| 768 | |
| 769 | oci_free_statement($stmt); |
| 770 | |
| 771 | if ($html_table) |
| 772 | { |
| 773 | $this->html_hold .= '</table>'; |
| 774 | } |
| 775 | |
| 776 | break; |
| 777 | |
| 778 | case 'fromcache': |
| 779 | $endtime = explode(' ', microtime()); |
| 780 | $endtime = $endtime[0] + $endtime[1]; |
| 781 | |
| 782 | $result = @oci_parse($this->db_connect_id, $query); |
| 783 | if ($result) |
| 784 | { |
| 785 | $success = @oci_execute($result, OCI_DEFAULT); |
| 786 | if ($success) |
| 787 | { |
| 788 | while ($row = oci_fetch_array($result, OCI_ASSOC + OCI_RETURN_NULLS)) |
| 789 | { |
| 790 | // Take the time spent on parsing rows into account |
| 791 | } |
| 792 | @oci_free_statement($result); |
| 793 | } |
| 794 | } |
| 795 | |
| 796 | $splittime = explode(' ', microtime()); |
| 797 | $splittime = $splittime[0] + $splittime[1]; |
| 798 | |
| 799 | $this->sql_report('record_fromcache', $query, $endtime, $splittime); |
| 800 | |
| 801 | break; |
| 802 | } |
| 803 | } |
| 804 | |
| 805 | /** |
| 806 | * {@inheritDoc} |
| 807 | */ |
| 808 | function sql_quote($msg) |
| 809 | { |
| 810 | return '"' . $msg . '"'; |
| 811 | } |
| 812 | } |