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| <?php | |
| /** | |
| * | |
| * This file is part of the phpBB Forum Software package. | |
| * | |
| * @copyright (c) phpBB Limited <https://www.phpbb.com> | |
| * @license GNU General Public License, version 2 (GPL-2.0) | |
| * | |
| * For full copyright and license information, please see | |
| * the docs/CREDITS.txt file. | |
| * | |
| */ | |
| namespace phpbb\db\driver; | |
| /** | |
| * Unified ODBC functions | |
| * Unified ODBC functions support any database having ODBC driver, for example Adabas D, IBM DB2, iODBC, Solid, Sybase SQL Anywhere... | |
| * Here we only support MSSQL Server 2000+ because of the provided schema | |
| * | |
| * @note number of bytes returned for returning data depends on odbc.defaultlrl php.ini setting. | |
| * If it is limited to 4K for example only 4K of data is returned max, resulting in incomplete theme data for example. | |
| * @note odbc.defaultbinmode may affect UTF8 characters | |
| */ | |
| class mssql_odbc extends \phpbb\db\driver\mssql_base | |
| { | |
| var $last_query_text = ''; | |
| var $connect_error = ''; | |
| /** | |
| * {@inheritDoc} | |
| */ | |
| function sql_connect($sqlserver, $sqluser, $sqlpassword, $database, $port = false, $persistency = false, $new_link = false) | |
| { | |
| $this->persistency = $persistency; | |
| $this->user = $sqluser; | |
| $this->dbname = $database; | |
| $port_delimiter = (defined('PHP_OS') && substr(PHP_OS, 0, 3) === 'WIN') ? ',' : ':'; | |
| $this->server = $sqlserver . (($port) ? $port_delimiter . $port : ''); | |
| $max_size = @ini_get('odbc.defaultlrl'); | |
| if (!empty($max_size)) | |
| { | |
| $unit = strtolower(substr($max_size, -1, 1)); | |
| $max_size = (int) $max_size; | |
| if ($unit == 'k') | |
| { | |
| $max_size = floor($max_size / 1024); | |
| } | |
| else if ($unit == 'g') | |
| { | |
| $max_size *= 1024; | |
| } | |
| else if (is_numeric($unit)) | |
| { | |
| $max_size = floor((int) ($max_size . $unit) / 1048576); | |
| } | |
| $max_size = max(8, $max_size) . 'M'; | |
| @ini_set('odbc.defaultlrl', $max_size); | |
| } | |
| if ($this->persistency) | |
| { | |
| if (!function_exists('odbc_pconnect')) | |
| { | |
| $this->connect_error = 'odbc_pconnect function does not exist, is odbc extension installed?'; | |
| return $this->sql_error(''); | |
| } | |
| $this->db_connect_id = @odbc_pconnect($this->server, $this->user, $sqlpassword); | |
| } | |
| else | |
| { | |
| if (!function_exists('odbc_connect')) | |
| { | |
| $this->connect_error = 'odbc_connect function does not exist, is odbc extension installed?'; | |
| return $this->sql_error(''); | |
| } | |
| $this->db_connect_id = @odbc_connect($this->server, $this->user, $sqlpassword); | |
| } | |
| return ($this->db_connect_id) ? $this->db_connect_id : $this->sql_error(''); | |
| } | |
| /** | |
| * {@inheritDoc} | |
| */ | |
| function sql_server_info($raw = false, $use_cache = true) | |
| { | |
| global $cache; | |
| if (!$use_cache || empty($cache) || ($this->sql_server_version = $cache->get('mssqlodbc_version')) === false) | |
| { | |
| $result_id = @odbc_exec($this->db_connect_id, "SELECT SERVERPROPERTY('productversion'), SERVERPROPERTY('productlevel'), SERVERPROPERTY('edition')"); | |
| $row = false; | |
| if ($result_id) | |
| { | |
| $row = odbc_fetch_array($result_id); | |
| odbc_free_result($result_id); | |
| } | |
| $this->sql_server_version = ($row) ? trim(implode(' ', $row)) : 0; | |
| if (!empty($cache) && $use_cache) | |
| { | |
| $cache->put('mssqlodbc_version', $this->sql_server_version); | |
| } | |
| } | |
| if ($raw) | |
| { | |
| return $this->sql_server_version; | |
| } | |
| return ($this->sql_server_version) ? 'MSSQL (ODBC)<br />' . $this->sql_server_version : 'MSSQL (ODBC)'; | |
| } | |
| /** | |
| * SQL Transaction | |
| * @access private | |
| */ | |
| function _sql_transaction($status = 'begin') | |
| { | |
| switch ($status) | |
| { | |
| case 'begin': | |
| return @odbc_exec($this->db_connect_id, 'BEGIN TRANSACTION'); | |
| break; | |
| case 'commit': | |
| return @odbc_exec($this->db_connect_id, 'COMMIT TRANSACTION'); | |
| break; | |
| case 'rollback': | |
| return @odbc_exec($this->db_connect_id, 'ROLLBACK TRANSACTION'); | |
| break; | |
| } | |
| return true; | |
| } | |
| /** | |
| * {@inheritDoc} | |
| */ | |
| function sql_query($query = '', $cache_ttl = 0) | |
| { | |
| if ($query != '') | |
| { | |
| global $cache; | |
| if ($this->debug_sql_explain) | |
| { | |
| $this->sql_report('start', $query); | |
| } | |
| else if ($this->debug_load_time) | |
| { | |
| $this->curtime = microtime(true); | |
| } | |
| $this->last_query_text = $query; | |
| $this->query_result = ($cache && $cache_ttl) ? $cache->sql_load($query) : false; | |
| $this->sql_add_num_queries($this->query_result); | |
| if ($this->query_result === false) | |
| { | |
| try | |
| { | |
| $this->query_result = @odbc_exec($this->db_connect_id, $query); | |
| } | |
| catch (\Error $e) | |
| { | |
| // Do nothing as SQL driver will report the error | |
| } | |
| if ($this->query_result === false) | |
| { | |
| $this->sql_error($query); | |
| } | |
| if ($this->debug_sql_explain) | |
| { | |
| $this->sql_report('stop', $query); | |
| } | |
| else if ($this->debug_load_time) | |
| { | |
| $this->sql_time += microtime(true) - $this->curtime; | |
| } | |
| if (!$this->query_result) | |
| { | |
| return false; | |
| } | |
| $safe_query_id = $this->clean_query_id($this->query_result); | |
| if ($cache && $cache_ttl) | |
| { | |
| $this->open_queries[$safe_query_id] = $this->query_result; | |
| $this->query_result = $cache->sql_save($this, $query, $this->query_result, $cache_ttl); | |
| } | |
| else if (strpos($query, 'SELECT') === 0) | |
| { | |
| $this->open_queries[$safe_query_id] = $this->query_result; | |
| } | |
| } | |
| else if ($this->debug_sql_explain) | |
| { | |
| $this->sql_report('fromcache', $query); | |
| } | |
| } | |
| else | |
| { | |
| return false; | |
| } | |
| return $this->query_result; | |
| } | |
| /** | |
| * Build LIMIT query | |
| */ | |
| function _sql_query_limit($query, $total, $offset = 0, $cache_ttl = 0) | |
| { | |
| $this->query_result = false; | |
| // Since TOP is only returning a set number of rows we won't need it if total is set to 0 (return all rows) | |
| if ($total) | |
| { | |
| // We need to grab the total number of rows + the offset number of rows to get the correct result | |
| if (strpos($query, 'SELECT DISTINCT') === 0) | |
| { | |
| $query = 'SELECT DISTINCT TOP ' . ($total + $offset) . ' ' . substr($query, 15); | |
| } | |
| else | |
| { | |
| $query = 'SELECT TOP ' . ($total + $offset) . ' ' . substr($query, 6); | |
| } | |
| } | |
| $result = $this->sql_query($query, $cache_ttl); | |
| // Seek by $offset rows | |
| if ($offset) | |
| { | |
| $this->sql_rowseek($offset, $result); | |
| } | |
| return $result; | |
| } | |
| /** | |
| * {@inheritDoc} | |
| */ | |
| function sql_affectedrows() | |
| { | |
| return ($this->db_connect_id) ? @odbc_num_rows($this->query_result) : false; | |
| } | |
| /** | |
| * {@inheritDoc} | |
| */ | |
| function sql_fetchrow($query_id = false) | |
| { | |
| global $cache; | |
| if ($query_id === false) | |
| { | |
| $query_id = $this->query_result; | |
| } | |
| $safe_query_id = $this->clean_query_id($query_id); | |
| if ($cache && $cache->sql_exists($safe_query_id)) | |
| { | |
| return $cache->sql_fetchrow($safe_query_id); | |
| } | |
| return ($query_id) ? odbc_fetch_array($query_id) : false; | |
| } | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| public function sql_last_inserted_id() | |
| { | |
| $result_id = @odbc_exec($this->db_connect_id, 'SELECT @@IDENTITY'); | |
| if ($result_id) | |
| { | |
| if (odbc_fetch_array($result_id)) | |
| { | |
| $id = odbc_result($result_id, 1); | |
| odbc_free_result($result_id); | |
| return $id; | |
| } | |
| odbc_free_result($result_id); | |
| } | |
| return false; | |
| } | |
| /** | |
| * {@inheritDoc} | |
| */ | |
| function sql_freeresult($query_id = false) | |
| { | |
| global $cache; | |
| if ($query_id === false) | |
| { | |
| $query_id = $this->query_result; | |
| } | |
| $safe_query_id = $this->clean_query_id($query_id); | |
| if ($cache && $cache->sql_exists($safe_query_id)) | |
| { | |
| return $cache->sql_freeresult($safe_query_id); | |
| } | |
| if (isset($this->open_queries[$safe_query_id])) | |
| { | |
| unset($this->open_queries[$safe_query_id]); | |
| return odbc_free_result($query_id); | |
| } | |
| return false; | |
| } | |
| /** | |
| * return sql error array | |
| * @access private | |
| */ | |
| function _sql_error() | |
| { | |
| if (function_exists('odbc_errormsg')) | |
| { | |
| $error = array( | |
| 'message' => @odbc_errormsg(), | |
| 'code' => @odbc_error(), | |
| ); | |
| } | |
| else | |
| { | |
| $error = array( | |
| 'message' => $this->connect_error, | |
| 'code' => '', | |
| ); | |
| } | |
| return $error; | |
| } | |
| /** | |
| * Close sql connection | |
| * @access private | |
| */ | |
| function _sql_close() | |
| { | |
| return @odbc_close($this->db_connect_id); | |
| } | |
| /** | |
| * Build db-specific report | |
| * @access private | |
| */ | |
| function _sql_report($mode, $query = '') | |
| { | |
| switch ($mode) | |
| { | |
| case 'start': | |
| break; | |
| case 'fromcache': | |
| $endtime = explode(' ', microtime()); | |
| $endtime = $endtime[0] + $endtime[1]; | |
| $result = @odbc_exec($this->db_connect_id, $query); | |
| if ($result) | |
| { | |
| while ($void = odbc_fetch_array($result)) | |
| { | |
| // Take the time spent on parsing rows into account | |
| } | |
| odbc_free_result($result); | |
| } | |
| $splittime = explode(' ', microtime()); | |
| $splittime = $splittime[0] + $splittime[1]; | |
| $this->sql_report('record_fromcache', $query, $endtime, $splittime); | |
| break; | |
| } | |
| } | |
| } |