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<?php
/**
* Database functions
*
* Standard: PSR-2
*
* @package SC\DUPX\DB
* @link http://www.php-fig.org/psr/psr-2/
*
*/
defined('ABSPATH') || defined('DUPXABSPATH') || exit;
class DUPX_DB_Functions
{
/**
*
* @var self
*/
protected static $instance = null;
/**
*
* @var database connection
*/
private $dbh = null;
/**
* current data connection
*/
private $dataConnection = null;
private function __construct()
{
$this->timeStart = DUPX_U::getMicrotime();
}
/**
*
* @return self
*/
public static function getInstance()
{
if (is_null(self::$instance)) {
self::$instance = new self;
}
return self::$instance;
}
/**
* open db connection if is closed
*
* @return database connection handle
*
*/
public function dbConnection($customConnection = null)
{
if (is_null($this->dbh)) {
if (is_null($customConnection)) {
$paramsManager = DUPX_Paramas_Manager::getInstance();
if ($paramsManager->getValue(DUPX_Paramas_Manager::PARAM_DB_TEST_OK) == false) {
throw new Exception('Database test not passed');
}
$dbhost = $paramsManager->getValue(DUPX_Paramas_Manager::PARAM_DB_HOST);
$dbname = $paramsManager->getValue(DUPX_Paramas_Manager::PARAM_DB_NAME);
$dbuser = $paramsManager->getValue(DUPX_Paramas_Manager::PARAM_DB_USER);
$dbpass = $paramsManager->getValue(DUPX_Paramas_Manager::PARAM_DB_PASS);
} else {
$dbhost = $customConnection['dbhost'];
$dbname = $customConnection['dbname'];
$dbuser = $customConnection['dbuser'];
$dbpass = $customConnection['dbpass'];
}
//MYSQL CONNECTION
if (($dbh = DUPX_DB::connect($dbhost, $dbuser, $dbpass, $dbname)) == false) {
$dbConnError = (mysqli_connect_error()) ? 'Error: '.mysqli_connect_error() : 'Unable to Connect';
$msg = "Unable to connect with the following parameters:<br/>"
."<b>HOST:</b>{$dbhost}<br/>"
."<b>DATABASE:</b> {$dbname}<br/>"
."<b>Connection Error:</b> {$dbConnError}";
DUPX_Log::error($msg);
} else {
$this->dbh = $dbh;
$this->dataConnection = array(
'dbhost' => $dbhost,
'dbname' => $dbname,
'dbuser' => $dbuser,
'dbpass' => $dbpass
);
}
if (is_null($customConnection)) {
$db_max_time = mysqli_real_escape_string($this->dbh, $GLOBALS['DB_MAX_TIME']);
DUPX_DB::mysqli_query($this->dbh, "SET wait_timeout = ".mysqli_real_escape_string($this->dbh, $db_max_time));
DUPX_DB::setCharset($this->dbh, $paramsManager->getValue(DUPX_Paramas_Manager::PARAM_DB_CHARSET), $paramsManager->getValue(DUPX_Paramas_Manager::PARAM_DB_COLLATE));
}
}
return $this->dbh;
}
/**
* close db connection if is open
*/
public function closeDbConnection()
{
if (!is_null($this->dbh)) {
mysqli_close($this->dbh);
$this->dbh = null;
$this->dataConnection = null;
}
}
/**
*
* @return string
*/
public static function getPostsTableName($prefix = null)
{
if (is_null($prefix)) {
$prefix = DUPX_Paramas_Manager::getInstance()->getValue(DUPX_Paramas_Manager::PARAM_DB_TABLE_PREFIX);
}
return $prefix.'posts';
}
/**
*
* @return string
*/
public static function getUserTableName($prefix = null)
{
if (is_null($prefix)) {
$prefix = DUPX_Paramas_Manager::getInstance()->getValue(DUPX_Paramas_Manager::PARAM_DB_TABLE_PREFIX);
}
return $prefix.'users';
}
/**
*
* @return string
*/
public static function getUserMetaTableName($prefix = null)
{
if (is_null($prefix)) {
$prefix = DUPX_Paramas_Manager::getInstance()->getValue(DUPX_Paramas_Manager::PARAM_DB_TABLE_PREFIX);
}
return $prefix.'usermeta';
}
/**
*
* @param string $userLogin
* @return boolean return true if user login name exists in users table
* @throws Exception
*/
public function checkIfUserNameExists($userLogin)
{
if (!$this->tablesExist(self::getUserTableName())) {
return false;
}
$query = 'SELECT ID FROM `'.mysqli_real_escape_string($this->dbh, self::getUserTableName()).'` '
.'WHERE user_login="'.mysqli_real_escape_string($this->dbh, $userLogin).'"';
if (($result = DUPX_DB::mysqli_query($this->dbh, $query)) === false) {
throw new Exception('SQL ERROR:'.mysqli_error($this->dbh));
}
return ($result->num_rows > 0);
}
public function userPwdReset($userId, $newPassword)
{
$tableName = mysqli_real_escape_string($this->dbh, self::getUserTableName());
$query = 'UPDATE `'.$tableName.'` '
.'SET `user_pass` = MD5("'.mysqli_real_escape_string($this->dbh, $newPassword).'") '
.'WHERE `'.$tableName.'`.`ID` = '.$userId;
if (($result = DUPX_DB::mysqli_query($this->dbh, $query)) === false) {
throw new Exception('SQL ERROR:'.mysqli_error($this->dbh));
} else {
return true;
}
}
/**
* return true if all tables passed in list exists
*
* @param string|array $tables
*/
public function tablesExist($tables)
{
//SHOW TABLES FROM c1_temptest WHERE Tables_in_c1_temptest IN ('i5tr4_users','i5tr4_usermeta')
$this->dbConnection();
if (is_scalar($tables)) {
$tables = array($tables);
}
$dbName = mysqli_real_escape_string($this->dbh, $this->dataConnection['dbname']);
$dbh = $this->dbh;
$escapedTables = array_map(function ($table) use ($dbh) {
return "'".mysqli_real_escape_string($dbh, $table)."'";
}, $tables);
$sql = 'SHOW TABLES FROM `'.$dbName.'` WHERE `Tables_in_'.$dbName.'` IN ('.implode(',', $escapedTables).')';
if (($result = DUPX_DB::mysqli_query($this->dbh, $sql)) === false) {
return false;
}
return $result->num_rows === count($tables);
}
/**
*
* @param type $newPrefix
* @param type $options
* @throws Exception
*/
public function pregReplaceTableName($pattern, $replacement, $options = array())
{
$this->dbConnection();
$options = array_merge(array(
'exclude' => array(), // exclude table list,
'prefixFilter' => false,
'regexFilter' => false, // filter tables with regexp
'notRegexFilter' => false, // filter tables with not regexp
'regexTablesDropFkeys' => false
), $options);
$escapedDbName = mysqli_real_escape_string($this->dbh, DUPX_Paramas_Manager::getInstance()->getValue(DUPX_Paramas_Manager::PARAM_DB_NAME));
$tablesIn = 'Tables_in_'.$escapedDbName;
$where = ' WHERE TRUE';
if ($options['prefixFilter'] !== false) {
$where .= ' AND `'.$tablesIn.'` NOT REGEXP "^'.mysqli_real_escape_string($this->dbh, preg_quote($options['prefixFilter'], null /* no delimiter */)).'.+"';
}
if ($options['regexFilter'] !== false) {
$where .= ' AND `'.$tablesIn.'` REGEXP "'.mysqli_real_escape_string($this->dbh, preg_quote($options['regexFilter'], null /* no delimiter */)).'"';
}
if ($options['notRegexFilter'] !== false) {
$where .= ' AND `'.$tablesIn.'` NOT REGEXP "'.mysqli_real_escape_string($this->dbh, preg_quote($options['notRegexFilter'], null /* no delimiter */)).'"';
}
if (($tablesList = DUPX_DB::queryColumnToArray($this->dbh, 'SHOW TABLES FROM `'.$escapedDbName.'`'.$where)) === false) {
DUPX_Log::error('SQL ERROR:'.mysqli_error($this->dbh));
}
$this->rename_tbl_log = 0;
if (count($tablesList) > 0) {
DUPX_DB::mysqli_query($this->dbh, "SET FOREIGN_KEY_CHECKS = 0;");
foreach ($tablesList as $table_name) {
if (in_array($table_name, $options['exclude'])) {
continue;
}
$newTableName = preg_replace($pattern, $replacement, $table_name);
$escapedOldTable = mysqli_real_escape_string($this->dbh, $table_name);
$ecapedNewTable = mysqli_real_escape_string($this->dbh, substr($newTableName, 0, 64));
if (!DUPX_DB::mysqli_query($this->dbh, "RENAME TABLE `".$escapedDbName."`.`".$escapedOldTable."` TO `".$escapedDbName."`.`".$ecapedNewTable."`")) {
DUPX_Log::error(sprintf(ERR_DBTRYRENAME, "{$this->post['dbname']}.{$table_name}"));
}
$this->rename_tbl_log++;
}
if ($options['regexTablesDropFkeys'] !== false) {
DUPX_Log::info('DROP FOREING KEYS');
$this->dropForeignKeys($options['regexTablesDropFkeys']);
}
DUPX_DB::mysqli_query($this->dbh, "SET FOREIGN_KEY_CHECKS = 1;");
}
}
/**
*
* @param string $tableNamePatten
* @return array
*/
public function getForeinKeysData($tableNamePatten = false)
{
$this->dbConnection();
//SELECT CONSTRAINT_NAME FROM information_schema.table_constraints WHERE `CONSTRAINT_TYPE` = 'FOREIGN KEY AND constraint_schema = 'temp_db_test_1234' AND `TABLE_NAME` = 'renamed''
$escapedDbName = mysqli_real_escape_string($this->dbh, DUPX_Paramas_Manager::getInstance()->getValue(DUPX_Paramas_Manager::PARAM_DB_NAME));
$escapePattenr = mysqli_real_escape_string($this->dbh, $tableNamePatten);
$where = " WHERE `CONSTRAINT_TYPE` = 'FOREIGN KEY' AND constraint_schema = '".$escapedDbName."'";
if ($tableNamePatten !== false) {
$where .= " AND `TABLE_NAME` REGEXP '".$escapePattenr."'";
}
if (($result = DUPX_DB::mysqli_query($this->dbh, "SELECT TABLE_NAME as tableName, CONSTRAINT_NAME as fKeyName FROM information_schema.table_constraints ".$where)) === false) {
DUPX_Log::error('SQL ERROR:'.mysqli_error($this->dbh));
}
return $result->fetch_all(MYSQLI_ASSOC);
}
/**
*
* @param string $tableNamePatten
* @return boolean
*/
public function dropForeignKeys($tableNamePatten = false)
{
foreach ($this->getForeinKeysData($tableNamePatten) as $fKeyData) {
$escapedTableName = mysqli_real_escape_string($this->dbh, $fKeyData['tableName']);
$escapedFKeyName = mysqli_real_escape_string($this->dbh, $fKeyData['fKeyName']);
if (DUPX_DB::mysqli_query($this->dbh, 'ALTER TABLE `'.$escapedTableName.'` DROP CONSTRAINT `'.$escapedFKeyName.'`') === false) {
DUPX_Log::error('SQL ERROR:'.mysqli_error($this->dbh));
}
}
return true;
}
public function copyTable($existing_name, $new_name, $delete_if_conflict = false)
{
$this->dbConnection();
return DUPX_DB::copyTable($this->dbh, $existing_name, $new_name, $delete_if_conflict);
}
public function renameTable($existing_name, $new_name, $delete_if_conflict = false)
{
$this->dbConnection();
return DUPX_DB::renameTable($this->dbh, $existing_name, $new_name, $delete_if_conflict);
}
public function dropTable($name)
{
$this->dbConnection();
return DUPX_DB::dropTable($this->dbh, $name);
}
/**
*
* @param string $prefix
* @return boolean
*/
public function getAdminUsers($prefix)
{
$escapedPrefix = mysqli_real_escape_string($this->dbh, $prefix);
$userTable = mysqli_real_escape_string($this->dbh, $this->getUserTableName($prefix));
$userMetaTable = mysqli_real_escape_string($this->dbh, $this->getUserMetaTableName($prefix));
$sql = 'SELECT `'.$userTable.'`.`id` AS id, `'.$userTable.'`.`user_login` AS user_login FROM `'.$userTable.'` '
.'INNER JOIN `'.$userMetaTable.'` ON ( `'.$userTable.'`.`id` = `'.$userMetaTable.'`.`user_id` ) '
.'WHERE `'.$userMetaTable.'`.`meta_key` = "'.$escapedPrefix.'capabilities" AND `'.$userMetaTable.'`.`meta_value` LIKE "%\"administrator\"%" '
.'ORDER BY user_login ASC';
if (($queryResult = DUPX_DB::mysqli_query($this->dbh, $sql)) === false) {
return false;
}
$result = array();
while ($row = $queryResult->fetch_assoc()) {
$result[] = $row;
}
return $result;
}
/**
*
* @param int $userId
* @param null|string $prefix
* @return boolean
*/
public function updatePostsAuthor($userId, $prefix = null)
{
$this->dbConnection();
//UPDATE `i5tr4_posts` SET `post_author` = 7 WHERE TRUE
$postsTable = mysqli_real_escape_string($this->dbh, $this->getPostsTableName($prefix));
$sql = 'UPDATE `'.$postsTable.'` SET `post_author` = '.((int) $userId).' WHERE TRUE';
if (($result = DUPX_DB::mysqli_query($this->dbh, $sql)) === false) {
return false;
}
return true;
}
}