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、JS空集合保护、会话过期体验优化（403 JSON）、display_errors 关闭、固定 key 根治 Integrity check failed 等全部改动注意：config.inc.php/.htaccess/.user.ini 含敏感信息，通过 .gitignore 排除，勿推送到公开仓库。
2026-09-09 16:55:02 +08:00
commit 1ba6efd8ed
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+<?php
+/**
+ * Class AlphaNum
+ *
+ * @created      25.11.2015
+ * @author       Smiley <smiley@chillerlan.net>
+ * @copyright    2015 Smiley
+ * @license      MIT
+ */
+
+namespace chillerlan\QRCode\Data;
+
+use chillerlan\QRCode\Common\{BitBuffer, Mode};
+use function ceil;
+use function intdiv;
+use function preg_match;
+use function strpos;
+
+/**
+ * Alphanumeric mode: 0 to 9, A to Z, space, $ % * + - . / :
+ *
+ * ISO/IEC 18004:2000 Section 8.3.3
+ * ISO/IEC 18004:2000 Section 8.4.3
+ */
+final class AlphaNum extends QRDataModeAbstract{
+
+	/**
+	 * ISO/IEC 18004:2000 Table 5
+	 *
+	 * @var string
+	 */
+	private const CHAR_MAP = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ $%*+-./:';
+
+	/**
+	 * @inheritDoc
+	 */
+	public const DATAMODE = Mode::ALPHANUM;
+
+	/**
+	 * @inheritDoc
+	 */
+	public function getLengthInBits():int{
+		return (int)ceil($this->getCharCount() * (11 / 2));
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	public static function validateString(string $string):bool{
+		return (bool)preg_match('/^[A-Z\d %$*+-.:\/]+$/', $string);
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	public function write(BitBuffer $bitBuffer, int $versionNumber):QRDataModeInterface{
+		$len = $this->getCharCount();
+
+		$bitBuffer
+			->put(self::DATAMODE, 4)
+			->put($len, $this::getLengthBits($versionNumber))
+		;
+
+		// encode 2 characters in 11 bits
+		for($i = 0; ($i + 1) < $len; $i += 2){
+			$bitBuffer->put(
+				($this->ord($this->data[$i]) * 45 + $this->ord($this->data[($i + 1)])),
+				11,
+			);
+		}
+
+		// encode a remaining character in 6 bits
+		if($i < $len){
+			$bitBuffer->put($this->ord($this->data[$i]), 6);
+		}
+
+		return $this;
+	}
+
+	/**
+	 * @inheritDoc
+	 *
+	 * @throws \chillerlan\QRCode\Data\QRCodeDataException
+	 */
+	public static function decodeSegment(BitBuffer $bitBuffer, int $versionNumber):string{
+		$length = $bitBuffer->read(self::getLengthBits($versionNumber));
+		$result = '';
+		// Read two characters at a time
+		while($length > 1){
+
+			if($bitBuffer->available() < 11){
+				throw new QRCodeDataException('not enough bits available'); // @codeCoverageIgnore
+			}
+
+			$nextTwoCharsBits  = $bitBuffer->read(11);
+			$result           .= self::chr(intdiv($nextTwoCharsBits, 45));
+			$result           .= self::chr($nextTwoCharsBits % 45);
+			$length           -= 2;
+		}
+
+		if($length === 1){
+			// special case: one character left
+			if($bitBuffer->available() < 6){
+				throw new QRCodeDataException('not enough bits available'); // @codeCoverageIgnore
+			}
+
+			$result .= self::chr($bitBuffer->read(6));
+		}
+
+		return $result;
+	}
+
+	/**
+	 * @throws \chillerlan\QRCode\Data\QRCodeDataException
+	 */
+	private function ord(string $chr):int{
+		/** @phan-suppress-next-line PhanParamSuspiciousOrder */
+		$ord = strpos(self::CHAR_MAP, $chr);
+
+		if($ord === false){
+			throw new QRCodeDataException('invalid character'); // @codeCoverageIgnore
+		}
+
+		return $ord;
+	}
+
+	/**
+	 * @throws \chillerlan\QRCode\Data\QRCodeDataException
+	 */
+	private static function chr(int $ord):string{
+
+		if($ord < 0 || $ord > 44){
+			throw new QRCodeDataException('invalid character code'); // @codeCoverageIgnore
+		}
+
+		return self::CHAR_MAP[$ord];
+	}
+
+}