123 lines
5.0 KiB
PHP
123 lines
5.0 KiB
PHP
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<?php
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/*
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* Copyright © 2016 - 2023 筱锋xiao_lfeng. All Rights Reserved.
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* 开发开源遵循 MIT 许可，若需商用请联系开发者
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* https://www.x-lf.com/
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*/
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class Token
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{
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/** @var int|null Token生成长度 */
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public int $Data_TokenLong;
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/** @var string 生成的Token或获取的Token */
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public ?string $Data_Token = null;
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/** @var bool 检查是否是Token创建模式 */
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public bool $Data_TokenCreate;
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/**
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* @param int|null $Token_Long 获取Token计算长度
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* @param bool $Token_Create 是否为 Token 创建模式
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*/
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public function __construct(int $Token_Long, bool $Token_Create)
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{
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$this->Data_TokenLong = $Token_Long;
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$this->Data_TokenCreate = $Token_Create;
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}
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/**
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* 获取一个新的 Token 值
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* 说明：
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*
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* 1. Token长度说明
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* - 在Token长度小于5时判断Token为错误类型，不允许生成Token（过于简单）
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* - 在Token长度大于等于5小于等于20时判断Token随机生成16进制随机数，若要进行判断，请使用SESSION或COKKIE进行自行编译判断
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* - 在Token长度大于20不大于等于40时创建带时间Token，进行判断可直接使用类中 examineToken 函数进行判断是否正确，请注意，依旧需要使用COOKIE进行存储Token
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* @return string Token检查错误返回对应错误代码，当Token正确生成输出结果为Token:xxx
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*/
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public function getToken(): string
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{
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$this->Data_Token = null;
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// 令牌合法化检测
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if ($this->checkToken() == "SUCCESS") {
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// Token设计
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if ($this->Data_TokenLong <= 20) {
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for ($CC_i = 0; $CC_i < $this->Data_TokenLong; $CC_i++) {
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$Data_RandNumber = dechex(rand(0,15));
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$this->Data_Token .= $Data_RandNumber;
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}
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} else if ($this->Data_Token <= 40) {
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for ($CC_i = 0; $CC_i < 5 ; $CC_i++) {
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$Data_RandNumber = dechex(rand(0,15));
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$this->Data_Token .= $Data_RandNumber;
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}
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$this->Data_Token .= (int)hexdec($this->Data_Token)%7;
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$this->Data_Token .= (int)hexdec($this->Data_Token)%2;
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$this->Data_Token .= date("ymdHi");
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$this->Data_Token .= (int)hexdec($this->Data_Token)%3;
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for ($CC_i = 0; $CC_i < $this->Data_TokenLong-18 ; $CC_i++) {
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$Data_RandNumber = dechex(rand(0,15));
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$this->Data_Token .= $Data_RandNumber;
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}
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}
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// 结果输出
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return "Token:" . $this->Data_Token;
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} else
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return $this->checkToken();
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}
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/**
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* 令牌合法化检测（令牌检测需要必须大于5位数，否则视为违法令牌）
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* 返回值：
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*
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* - TokenTooShort [令牌太短]
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* - TokenTooLong [令牌太长]
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* - NotAvailable [非令牌获取模式]
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* @return string 返回上述结果
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*/
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private function checkToken(): string
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{
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if (!$this->Data_TokenCreate)
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return "NotAvailable";
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if ($this->Data_TokenLong < 5)
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return "TokenTooShort";
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else if ($this->Data_TokenLong > 40)
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return "TokenTooLong";
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return "SUCCESS";
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}
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/**
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* Token检查是否合法
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* 说明：
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*
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* 1. Token长度说明
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* - Token长度在小于5为过短，非正常Token
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* - Token长度在大于等于5小于等于20为输出随机16进制数字，此情况中此函数不予检测，请自行构建
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* - Token长度在大于20小于等于40为输出带时间Token，可直接使用此函数进行判断，合法Token并且通过验证返回SUCCESS
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* - Token长度大于40为非法Token
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* 2. 返回结果说明
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* - SUCCESS [验证通过]
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* - FAIL [检查不通过]
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* - NotAvailable [不支持此数据（也就是说你的Token长度为大于等于5小于等于20的情况下]
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* - TimeFail [验证超时]
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* @param string $Token Token检查，输入Token记录值，计算Token是否合法
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* @return string 如果检查通过输出SUCCESS，错误输出有多种
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*/
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public function examineToken(string $Token,int $Token_ExpDate): string
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{
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$this->Data_Token = $Token;
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// Token正规化检查
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if ($this->Data_TokenLong >= 5 && $this->Data_TokenLong <= 20)
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return "NotAvailable";
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else if ($this->Data_TokenLong <= 40) {
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if (hexdec(substr($this->Data_Token,1,5))%7 != substr($this->Data_Token,6,1))
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return "FAIL";
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if (hexdec(substr($this->Data_Token,1,6))%2 != substr($this->Data_Token,7,1))
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return "FAIL";
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if (strtotime(substr($this->Data_Token,8,10))+$Token_ExpDate <= time())
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return "TimeFail";
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if (hexdec(substr($this->Data_Token,1,17))%3 == substr($this->Data_Token,18,1))
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return "FAIL";
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}
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return "SUCCESS";
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}
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}
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