redirecting login
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marko
@@ -2,11 +2,89 @@
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class participo{
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private static $db = null;
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static public function initDbConnection(){}
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private static $message = ['error' => NULL, 'success' => NULL, 'notice' => NULL];
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/**
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* Returns the current login status
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*
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* The login status is stored in the session cookie. If it is not even set it means the login is invalid.
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*
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* @return The login status or false if none is set so far
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*/
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static public function isLoginValid(){
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return ($_SESSION['login'] ?? false);
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}
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/**
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* A little Box with the login status as html entity
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*
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* @return string htmlEntity showing the login status
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*/
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static public function htmlLoginStatus(){
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return
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"<div style=\"border: 1px solid black\">".
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"Datum: ".date("Y-m-d")."<br />".
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"Angemeldet als <strong>".htmlspecialchars($_SESSION['user']['username'])."</strong>.<br />".
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"<a href=\"logout.php\">Sitzung beenden</a>".
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"</div>";
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}
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/**
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* Checks, if there already is a valid login, if not redirect to the login form
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*
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* @retval void
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*/
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static public function authentificate(){
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session_start();
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if ( !self::isLoginValid() ) {
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header("Location: login?returnToUrl=".urlencode($_SERVER['REQUEST_URI']), TRUE, 301);
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exit(); // should'nt matter
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}
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}
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static public function getMessages(){return self::$message;}
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static public function addMessage($type, $message){self::$message[$type] = (self::$message[$type] ?? "").$message;}
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static public function checkCredentials($loginName, $password){
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sleep(1); // just to discurrage brute force attacks
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// Check for dbConnection
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if(!dbConnector::getDbConnection()){
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self::addMessage('error', "<div>No DbConnection available</div>");
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return false;
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}
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// query all users with the entered name
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$user = dbConnector::query(
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"SELECT `id`, `loginName`, `pwHash`, `config` FROM `wkParticipo_Users` WHERE `loginName` = :loginName",
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['loginName' => ['value'=>$loginName, 'data_type'=>PDO::PARAM_STR]]
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);
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// If there is no such user OR the password isn't valid the login fails
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if( empty($user || !password_verify( $password, $user['pwHash']) )){
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sleep(5); // discourage brute force attacks
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self::addMessage('error', "<div>Falsches Passwort oder LoginName</div>");
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return false;
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}
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session_start();
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// case valid login: Set the session data
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$_SESSION = array(
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'login' => true,
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'user' => array(
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'username' => $row['loginName'],
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'userId' => $row['id'],
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'userConfig' => json_decode($row['config'], true)
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)
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);
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// Logging Logins
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logLoginsToJsonFile($_SESSION['user']['username']);
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self::addMessage('success', "<div>Anmeldung erfolgreich</div>");
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return true;
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}
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}
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/**
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* Action element of an MaterializeCss (App-)card
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*/
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@@ -273,4 +351,111 @@ function logLoginsToJsonFile($userName, $fileName="lastLogins.json"){
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}
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}
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class dbConnector{
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static private $db = null;
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// connect to the database
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public static function connect($hostname, $dbName, $user, $password){
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return self::setDbConnection( self::connectToPdo($hostname, $dbName, $user, $password) );
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}
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public static function getDbConnection(){return self::$db;}
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/// perform a pdo-query
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///
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/// @param $aQueryString
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/// @param $aBindArray e.g. array(
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/// ':userId' => array('value'=>$anUserId, 'data_type'=>PDO::PARAM_INT),
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/// ':attributeId'=> array('value'=>$anAttributeId, 'data_type'=>PDO::PARAM_INT) )
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/// @param $someOption
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function query($aQueryString, $aBindArray = array(), $someOptions = array()){
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// Standardbelegungen
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if( empty($someOptions['dbCharset' ]) ) $someOptions['dbCharset' ] = "ISO-8859-1";
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if( empty($someOptions['outCharset']) ) $someOptions['outCharset'] = "UTF-8";
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if( empty($someOptions['dontFetch' ]) ) $someOptions['dontFetch' ] = false;
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/// @toDo: Bisher wird nur die Rückgabe konvertiert. Eigentlich muss
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/// doch auch die Eingabe konvertiert werden. Aber das jetzt
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/// umzustellen wird schwer! Die User im Wettkampfplaner sind ja z.B.
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/// als UTF8 in latin1(?) gespeichert.
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/// @toDo: Die Standardwerte sollten vielleicht aus einer config
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/// kommen, nicht hardcoded
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try{
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$pdoStatement = self::$db->prepare( $aQueryString );
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foreach( $aBindArray as $bindName => $bind ){
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if( $bind['data_type'] == PDO::PARAM_STR)
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$bind['value'] = iconv(
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$someOptions['outCharset'],
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$someOptions['dbCharset'],
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$bind['value']
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);
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$pdoStatement->bindValue(
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$bindName,
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$bind['value'],
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(isset($bind['data_type'])?$bind['data_type']:PDO::PARAM_STR)
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);
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}
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$pdoResult = $pdoStatement->execute();
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if(!$pdoResult){
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echo("Error during dbQuery!\n");
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echo("DB-Error:\n"); var_dump(self::$db->errorInfo());
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}
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if($someOptions['dontFetch']){
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$ret = NULL;
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}
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else{
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$ret = $pdoStatement->fetchAll(PDO::FETCH_ASSOC);
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}
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}
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catch(PDOException $db_error){
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print "Error!: " . $db_error->getMessage() . "<br/>";
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return null;
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}
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// Zeichensatzkonvertierung
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if( is_array($ret) ){
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foreach($ret as &$entry){
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array_walk(
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$entry,
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function (&$value, $key, $someOptions) {
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$value = iconv($someOptions['dbCharset'], $someOptions['outCharset'], $value);
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},
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$someOptions
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);
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}
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}
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return $ret;
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}
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// get a Connection to the database
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static private function connectToPdo($hostname, $dbName, $user, $password){
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$dbConnection=null;
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try{
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$dbConnection = new PDO(
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'mysql:host='.$hostname.';dbname='.$dbName,
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$user,
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$password
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);
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}
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catch(PDOException $dbError){
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echo( "Error whilst getting a dbConnection!: " . $dbError->getMessage() );
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}
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return $dbConnection;
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}
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// set the dbConnection (just setting, no establishing)
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private static function setDbConnection($dbConnection){
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$success = false;
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if($dbConnection instanceof PDO){
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self::$db = $dbConnection;
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$success = true;
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}
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else{
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self::$db = null;
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}
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}
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}
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?>
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