137 lines
4.2 KiB
PHP
137 lines
4.2 KiB
PHP
<?php
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/**
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* This is a helper class for the SS installer.
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*
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* It does all the specific checking for MySQLDatabase
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* to ensure that the configuration is setup correctly.
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*
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* @package sappire
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* @subpackage model
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*/
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class MySQLDatabaseConfigurationHelper implements DatabaseConfigurationHelper {
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/**
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* Ensure that the database function for connectivity is available.
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* If it is, we assume the PHP module for this database has been setup correctly.
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*
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* @param array $databaseConfig Associative array of db configuration, e.g. "server", "username" etc
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* @return boolean
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*/
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public function requireDatabaseFunctions($databaseConfig) {
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return class_exists('MySQLi');
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}
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/**
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* Ensure that the database server exists.
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* @param array $databaseConfig Associative array of db configuration, e.g. "server", "username" etc
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* @return array Result - e.g. array('success' => true, 'error' => 'details of error')
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*/
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public function requireDatabaseServer($databaseConfig) {
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$success = false;
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$error = '';
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$conn = new MySQLi($databaseConfig['server'], $databaseConfig['username'], $databaseConfig['password']);
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if($conn && $conn->connect_errno < 2000) {
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$success = true;
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} else {
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$success = false;
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$error = ($conn) ? $conn->connect_error : '';
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}
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return array(
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'success' => $success,
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'error' => $error
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);
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}
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/**
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* Get the database version for the MySQL connection, given the
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* database parameters.
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* @return mixed string Version number as string | boolean FALSE on failure
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*/
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public function getDatabaseVersion($databaseConfig) {
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$conn = new MySQLi($databaseConfig['server'], $databaseConfig['username'], $databaseConfig['password']);
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if(!$conn) return false;
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$version = $conn->server_info;
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if(!$version) {
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// fallback to trying a query
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$result = $conn->query('SELECT VERSION()');
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$row = $result->fetch_array();
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if($row && isset($row[0])) {
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$version = trim($row[0]);
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}
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}
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return $version;
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}
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/**
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* Ensure that the MySQL server version is at least 5.0.
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* @param array $databaseConfig Associative array of db configuration, e.g. "server", "username" etc
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* @return array Result - e.g. array('success' => true, 'error' => 'details of error')
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*/
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public function requireDatabaseVersion($databaseConfig) {
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$version = $this->getDatabaseVersion($databaseConfig);
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$success = false;
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$error = '';
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if($version) {
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$success = version_compare($version, '5.0', '>=');
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if(!$success) {
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$error = "Your MySQL server version is $version. It's recommended you use at least MySQL 5.0.";
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}
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} else {
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$error = "Could not determine your MySQL version.";
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}
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return array(
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'success' => $success,
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'error' => $error
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);
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}
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/**
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* Ensure a database connection is possible using credentials provided.
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* @param array $databaseConfig Associative array of db configuration, e.g. "server", "username" etc
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* @return array Result - e.g. array('success' => true, 'error' => 'details of error')
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*/
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public function requireDatabaseConnection($databaseConfig) {
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$success = false;
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$error = '';
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$conn = new MySQLi($databaseConfig['server'], $databaseConfig['username'], $databaseConfig['password']);
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if($conn) {
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$success = true;
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} else {
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$success = false;
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$error = ($conn) ? $conn->connect_error : '';
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}
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return array(
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'success' => $success,
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'error' => $error
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);
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}
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/**
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* Ensure that the database connection is able to use an existing database,
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* or be able to create one if it doesn't exist.
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*
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* @param array $databaseConfig Associative array of db configuration, e.g. "server", "username" etc
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* @return array Result - e.g. array('success' => true, 'alreadyExists' => 'true')
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*/
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public function requireDatabaseOrCreatePermissions($databaseConfig) {
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$success = false;
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$alreadyExists = false;
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$conn = new MySQLi($databaseConfig['server'], $databaseConfig['username'], $databaseConfig['password']);
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if($conn && $conn->select_db($databaseConfig['database'])) {
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$success = true;
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$alreadyExists = true;
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} else {
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if($conn && $conn->query('CREATE DATABASE testing123')) {
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mysql_query('DROP DATABASE testing123', $conn);
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$success = true;
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$alreadyExists = false;
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}
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}
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return array(
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'success' => $success,
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'alreadyExists' => $alreadyExists
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);
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}
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}
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