MRBS 1.12.2 等保2.0二级整改完整提交

包含：登录失败锁定、90天密码有效期、30分钟会话超时、
强制改密、登录审计日志、屏幕水印、企业背景图、
备案信息固定底部、favicon、登录页JS修复等全部改动

web/lib/chillerlan/QRCode/Data/QRDataModeAbstract.php

@@ -0,0 +1,61 @@
+<?php
+/**
+ * Class QRDataModeAbstract
+ *
+ * @created      19.11.2020
+ * @author       smiley <smiley@chillerlan.net>
+ * @copyright    2020 smiley
+ * @license      MIT
+ */
+
+namespace chillerlan\QRCode\Data;
+
+use chillerlan\QRCode\Common\Mode;
+
+/**
+ * abstract methods for the several data modes
+ */
+abstract class QRDataModeAbstract implements QRDataModeInterface{
+
+	/**
+	 * The data to write
+	 */
+	protected string $data;
+
+	/**
+	 * QRDataModeAbstract constructor.
+	 *
+	 * @throws \chillerlan\QRCode\Data\QRCodeDataException
+	 */
+	public function __construct(string $data){
+		$data = $this::convertEncoding($data);
+
+		if(!$this::validateString($data)){
+			throw new QRCodeDataException('invalid data');
+		}
+
+		$this->data = $data;
+	}
+
+	/**
+	 * returns the character count of the $data string
+	 */
+	protected function getCharCount():int{
+		return strlen($this->data);
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	public static function convertEncoding(string $string):string{
+		return $string;
+	}
+
+	/**
+	 * shortcut
+	 */
+	protected static function getLengthBits(int $versionNumber):int{
+		return Mode::getLengthBitsForVersion(static::DATAMODE, $versionNumber);
+	}
+
+}