Yii 登录的时候 “记住我” 是怎么实现的呢?
SESSION 和 COOKIE 的原理 我大致清晰。
我问了同事说最好配合表一起实现“记住我”,可是Yii这个没有用表的啊
就是想了解Yii的内部实现是怎么回事?
回复内容:
SESSION 和 COOKIE 的原理 我大致清晰。
我问了同事说最好配合表一起实现“记住我”,可是Yii这个没有用表的啊
就是想了解Yii的内部实现是怎么回事?
你用的是yii1么?如果是继续往下看
在yii的源码framework/web/auth/CWebUser.php
里,登录方法如下
第二个参数duration就是是否记住的设置,yii默认生成的表单里会传入86400就是30天
public function login($identity,$duration=0) { $id=$identity->getId(); $states=$identity->getPersistentStates(); if($this->beforeLogin($id,$states,false)) { $this->changeIdentity($id,$identity->getName(),$states); if($duration>0) { if($this->allowAutoLogin) $this->saveToCookie($duration); else throw new CException(Yii::t('yii','{class}.allowAutoLogin must be set true in order to use cookie-based authentication.', array('{class}'=>get_class($this)))); } if ($this->absoluteAuthTimeout) $this->setState(self::AUTH_ABSOLUTE_TIMEOUT_VAR, time()+$this->absoluteAuthTimeout); $this->afterLogin(false); } return !$this->getIsGuest(); }
注意看saveToCookie
方法,里面依赖于CSecurityManager
的hashData
方法,继续跟踪下去,可以发现依赖于CStatePersister
存储的一些状态信息,而这个信息通常位于/path/to/app/protected/runtime/state.bin
里。
简单的说,只要拿不到你的state.bin
,拿不到你的程序路径
,就没法伪造
cookie 记住帐号,数据库建一个记住帐号的表,当这台电脑访问的时候把cookie的帐号发给服务器,去查是否存在这个帐号,就跳过验证密码

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