/** * Used to test whether we are able to connect to the database the user has specified * and identify any problems (eg there are already tables with the names we want to use * @param array $dbms should be of the format of an element of the array returned by {@link get_available_dbms get_available_dbms()} * necessary extensions should be loaded already */ function connect_check_db($error_connect, &$error, $dbms_details, $table_prefix, $dbhost, $dbuser, $dbpasswd, $dbname, $dbport, $prefix_may_exist = false, $load_dbal = true, $unicode_check = true) { global $phpbb_root_path, $phpEx, $config, $lang; $dbms = $dbms_details['DRIVER']; if ($load_dbal) { // Include the DB layer include $phpbb_root_path . 'includes/db/' . $dbms . '.' . $phpEx; } // Instantiate it and set return on error true $sql_db = 'dbal_' . $dbms; $db = new $sql_db(); $db->sql_return_on_error(true); // Check that we actually have a database name before going any further..... if ($dbms_details['DRIVER'] != 'sqlite' && $dbms_details['DRIVER'] != 'oracle' && $dbname === '') { $error[] = $lang['INST_ERR_DB_NO_NAME']; return false; } // Make sure we don't have a daft user who thinks having the SQLite database in the forum directory is a good idea if ($dbms_details['DRIVER'] == 'sqlite' && stripos(phpbb_realpath($dbhost), phpbb_realpath('../')) === 0) { $error[] = $lang['INST_ERR_DB_FORUM_PATH']; return false; } // Check the prefix length to ensure that index names are not too long and does not contain invalid characters switch ($dbms_details['DRIVER']) { case 'mysql': case 'mysqli': if (strspn($table_prefix, '-./\\') !== 0) { $error[] = $lang['INST_ERR_PREFIX_INVALID']; return false; } // no break; // no break; case 'postgres': $prefix_length = 36; break; case 'mssql': case 'mssql_odbc': case 'mssqlnative': $prefix_length = 90; break; case 'sqlite': $prefix_length = 200; break; case 'firebird': case 'oracle': $prefix_length = 6; break; } if (strlen($table_prefix) > $prefix_length) { $error[] = sprintf($lang['INST_ERR_PREFIX_TOO_LONG'], $prefix_length); return false; } // Try and connect ... if (is_array($db->sql_connect($dbhost, $dbuser, $dbpasswd, $dbname, $dbport, false, true))) { $db_error = $db->sql_error(); $error[] = $lang['INST_ERR_DB_CONNECT'] . '<br />' . ($db_error['message'] ? $db_error['message'] : $lang['INST_ERR_DB_NO_ERROR']); } else { // Likely matches for an existing phpBB installation if (!$prefix_may_exist) { $temp_prefix = strtolower($table_prefix); $table_ary = array($temp_prefix . 'attachments', $temp_prefix . 'config', $temp_prefix . 'sessions', $temp_prefix . 'topics', $temp_prefix . 'users'); $tables = get_tables($db); $tables = array_map('strtolower', $tables); $table_intersect = array_intersect($tables, $table_ary); if (sizeof($table_intersect)) { $error[] = $lang['INST_ERR_PREFIX']; } } // Make sure that the user has selected a sensible DBAL for the DBMS actually installed switch ($dbms_details['DRIVER']) { case 'mysqli': if (version_compare(mysqli_get_server_info($db->db_connect_id), '4.1.3', '<')) { $error[] = $lang['INST_ERR_DB_NO_MYSQLI']; } break; case 'sqlite': if (version_compare(sqlite_libversion(), '2.8.2', '<')) { $error[] = $lang['INST_ERR_DB_NO_SQLITE']; } break; case 'firebird': // check the version of FB, use some hackery if we can't get access to the server info if ($db->service_handle !== false && function_exists('ibase_server_info')) { $val = @ibase_server_info($db->service_handle, IBASE_SVC_SERVER_VERSION); preg_match('#V([\\d.]+)#', $val, $match); if ($match[1] < 2) { $error[] = $lang['INST_ERR_DB_NO_FIREBIRD']; } $db_info = @ibase_db_info($db->service_handle, $dbname, IBASE_STS_HDR_PAGES); preg_match('/^\\s*Page size\\s*(\\d+)/m', $db_info, $regs); $page_size = intval($regs[1]); if ($page_size < 8192) { $error[] = $lang['INST_ERR_DB_NO_FIREBIRD_PS']; } } else { $sql = "SELECT *\n\t\t\t\t\t\tFROM RDB{$FUNCTIONS}\n\t\t\t\t\t\tWHERE RDB{$SYSTEM_FLAG} IS NULL\n\t\t\t\t\t\t\tAND RDB{$FUNCTION_NAME} = 'CHAR_LENGTH'"; $result = $db->sql_query($sql); $row = $db->sql_fetchrow($result); $db->sql_freeresult($result); // if its a UDF, its too old if ($row) { $error[] = $lang['INST_ERR_DB_NO_FIREBIRD']; } else { $sql = 'SELECT 1 FROM RDB$DATABASE WHERE BIN_AND(10, 1) = 0'; $result = $db->sql_query($sql); if (!$result) { $error[] = $lang['INST_ERR_DB_NO_FIREBIRD']; } $db->sql_freeresult($result); } // Setup the stuff for our random table $char_array = array_merge(range('A', 'Z'), range('0', '9')); $char_len = mt_rand(7, 9); $char_array_len = sizeof($char_array) - 1; $final = ''; for ($i = 0; $i < $char_len; $i++) { $final .= $char_array[mt_rand(0, $char_array_len)]; } // Create some random table $sql = 'CREATE TABLE ' . $final . " (\n\t\t\t\t\t\tFIELD1 VARCHAR(255) CHARACTER SET UTF8 DEFAULT '' NOT NULL COLLATE UNICODE,\n\t\t\t\t\t\tFIELD2 INTEGER DEFAULT 0 NOT NULL);"; $db->sql_query($sql); // Create an index that should fail if the page size is less than 8192 $sql = 'CREATE INDEX ' . $final . ' ON ' . $final . '(FIELD1, FIELD2);'; $db->sql_query($sql); if (ibase_errmsg() !== false) { $error[] = $lang['INST_ERR_DB_NO_FIREBIRD_PS']; } else { // Kill the old table $db->sql_query('DROP TABLE ' . $final . ';'); } unset($final); } break; case 'oracle': if ($unicode_check) { $sql = "SELECT *\n\t\t\t\t\t\tFROM NLS_DATABASE_PARAMETERS\n\t\t\t\t\t\tWHERE PARAMETER = 'NLS_RDBMS_VERSION'\n\t\t\t\t\t\t\tOR PARAMETER = 'NLS_CHARACTERSET'"; $result = $db->sql_query($sql); while ($row = $db->sql_fetchrow($result)) { $stats[$row['parameter']] = $row['value']; } $db->sql_freeresult($result); if (version_compare($stats['NLS_RDBMS_VERSION'], '9.2', '<') && $stats['NLS_CHARACTERSET'] !== 'UTF8') { $error[] = $lang['INST_ERR_DB_NO_ORACLE']; } } break; case 'postgres': if ($unicode_check) { $sql = "SHOW server_encoding;"; $result = $db->sql_query($sql); $row = $db->sql_fetchrow($result); $db->sql_freeresult($result); if ($row['server_encoding'] !== 'UNICODE' && $row['server_encoding'] !== 'UTF8') { $error[] = $lang['INST_ERR_DB_NO_POSTGRES']; } } break; } } if ($error_connect && (!isset($error) || !sizeof($error))) { return true; } return false; }
/** * Used to test whether we are able to connect to the database the user has specified * and identify any problems (eg there are already tables with the names we want to use * @param array $dbms should be of the format of an element of the array returned by {@link get_available_dbms get_available_dbms()} * necessary extensions should be loaded already */ function critical_connect_check_db($error_connect, &$error, $dbms_details, $table_prefix, $dbhost, $dbuser, $dbpasswd, $dbname, $dbport, $prefix_may_exist = false, $load_dbal = true, $unicode_check = true) { // Must be globalized here for when including the DB file global $phpbb_root_path, $phpEx; $dbms = $dbms_details['DRIVER']; if ($load_dbal) { // Include the DB layer include PHPBB_ROOT_PATH . 'includes/db/' . $dbms . '.' . PHP_EXT; } // Instantiate it and set return on error true $sql_db = 'dbal_' . $dbms; $db = new $sql_db(); $db->sql_return_on_error(true); // Check that we actually have a database name before going any further..... if ($dbms_details['DRIVER'] != 'sqlite' && $dbms_details['DRIVER'] != 'oracle' && $dbname === '') { $error[] = 'No database name specified.'; return false; } // Check the prefix length to ensure that index names are not too long and does not contain invalid characters switch ($dbms_details['DRIVER']) { case 'mysql': case 'mysqli': if (strspn($table_prefix, '-./\\') !== 0) { $error[] = 'The table prefix you have specified is invalid for your database.'; return false; } // no break; // no break; case 'postgres': $prefix_length = 36; break; case 'mssql': case 'mssql_odbc': $prefix_length = 90; break; case 'sqlite': $prefix_length = 200; break; case 'firebird': case 'oracle': $prefix_length = 6; break; } if (strlen($table_prefix) > $prefix_length) { $error[] = 'The table prefix you have specified is invalid for your database.'; return false; } // Try and connect ... if (is_array($db->sql_connect($dbhost, $dbuser, $dbpasswd, $dbname, $dbport, false, true))) { $db_error = $db->sql_error(); $error[] = 'Could not connect to the database, see error message below.' . '<br />' . ($db_error['message'] ? $db_error['message'] : 'No error message given.'); } else { // Make sure that the user has selected a sensible DBAL for the DBMS actually installed switch ($dbms_details['DRIVER']) { case 'mysqli': if (version_compare(mysqli_get_server_info($db->db_connect_id), '4.1.3', '<')) { $error[] = 'The version of MySQL installed on this machine is incompatible with the “MySQL with MySQLi Extension” option you have selected. Please try the “MySQL” option instead.'; } break; case 'sqlite': if (version_compare(sqlite_libversion(), '2.8.2', '<')) { $error[] = 'The version of the SQLite extension you have installed is too old, it must be upgraded to at least 2.8.2.'; } break; case 'firebird': // check the version of FB, use some hackery if we can't get access to the server info if ($db->service_handle !== false && function_exists('ibase_server_info')) { $val = @ibase_server_info($db->service_handle, IBASE_SVC_SERVER_VERSION); preg_match('#V([\\d.]+)#', $val, $match); if ($match[1] < 2) { $error[] = 'The version of Firebird installed on this machine is older than 2.0, please upgrade to a newer version.'; } $db_info = @ibase_db_info($db->service_handle, $dbname, IBASE_STS_HDR_PAGES); preg_match('/^\\s*Page size\\s*(\\d+)/m', $db_info, $regs); $page_size = intval($regs[1]); if ($page_size < 8192) { $error[] = 'The database you selected for Firebird has a page size less than 8192, it must be at least 8192.'; } } else { $sql = "SELECT *\n\t\t\t\t\t\t\tFROM RDB{$FUNCTIONS}\n\t\t\t\t\t\t\tWHERE RDB{$SYSTEM_FLAG} IS NULL\n\t\t\t\t\t\t\t\tAND RDB{$FUNCTION_NAME} = 'CHAR_LENGTH'"; $result = $db->sql_query($sql); $row = $db->sql_fetchrow($result); $db->sql_freeresult($result); // if its a UDF, its too old if ($row) { $error[] = 'The version of Firebird installed on this machine is older than 2.0, please upgrade to a newer version.'; } else { $sql = "SELECT FIRST 0 char_length('')\n\t\t\t\t\t\t\t\tFROM RDB\$DATABASE"; $result = $db->sql_query($sql); if (!$result) { $error[] = 'The version of Firebird installed on this machine is older than 2.0, please upgrade to a newer version.'; } $db->sql_freeresult($result); } // Setup the stuff for our random table $char_array = array_merge(range('A', 'Z'), range('0', '9')); $char_len = mt_rand(7, 9); $char_array_len = sizeof($char_array) - 1; $final = ''; for ($i = 0; $i < $char_len; $i++) { $final .= $char_array[mt_rand(0, $char_array_len)]; } // Create some random table $sql = 'CREATE TABLE ' . $final . " (\n\t\t\t\t\t\t\tFIELD1 VARCHAR(255) CHARACTER SET UTF8 DEFAULT '' NOT NULL COLLATE UNICODE,\n\t\t\t\t\t\t\tFIELD2 INTEGER DEFAULT 0 NOT NULL);"; $db->sql_query($sql); // Create an index that should fail if the page size is less than 8192 $sql = 'CREATE INDEX ' . $final . ' ON ' . $final . '(FIELD1, FIELD2);'; $db->sql_query($sql); if (ibase_errmsg() !== false) { $error[] = 'The database you selected for Firebird has a page size less than 8192, it must be at least 8192.'; } else { // Kill the old table $db->sql_query('DROP TABLE ' . $final . ';'); } unset($final); } break; case 'oracle': if ($unicode_check) { $sql = "SELECT *\n\t\t\t\t\t\t\tFROM NLS_DATABASE_PARAMETERS\n\t\t\t\t\t\t\tWHERE PARAMETER = 'NLS_RDBMS_VERSION'\n\t\t\t\t\t\t\t\tOR PARAMETER = 'NLS_CHARACTERSET'"; $result = $db->sql_query($sql); while ($row = $db->sql_fetchrow($result)) { $stats[$row['parameter']] = $row['value']; } $db->sql_freeresult($result); if (version_compare($stats['NLS_RDBMS_VERSION'], '9.2', '<') && $stats['NLS_CHARACTERSET'] !== 'UTF8') { $error[] = 'The version of Oracle installed on this machine requires you to set the <var>NLS_CHARACTERSET</var> parameter to <var>UTF8</var>. Either upgrade your installation to 9.2+ or change the parameter.'; } } break; case 'postgres': if ($unicode_check) { $sql = "SHOW server_encoding;"; $result = $db->sql_query($sql); $row = $db->sql_fetchrow($result); $db->sql_freeresult($result); if ($row['server_encoding'] !== 'UNICODE' && $row['server_encoding'] !== 'UTF8') { $error[] = 'The database you have selected was not created in <var>UNICODE</var> or <var>UTF8</var> encoding. Try installing with a database in <var>UNICODE</var> or <var>UTF8</var> encoding.'; } } break; } $tables = get_tables($db); if (!in_array($table_prefix . 'acl_options', $tables) || !in_array($table_prefix . 'config', $tables) || !in_array($table_prefix . 'forums', $tables)) { $error[] = 'phpBB3 tables could not be found on this database with this table prefix.'; } } if ($error_connect && empty($error)) { return true; } return false; }