Firebase - 删除并重新安装应用程序不会取消对用户的身份验证 [英] Firebase - Deleting and reinstalling app does not un-authenticate a user

问题描述

使用下面的代码验证用户（下面是我的代码的修剪版本，所以只显示成功的登录逻辑）...

  let firebaseReference = Firebase（url：https://MY-FIREBASE.firebaseio.com）
  

$ pre $ F code $> FBSession.openActiveSessionWithReadPermissions（[public_profile，user_friends]，allowLoginUI：true ，
completionHandler：{session，state，

if if state FBSessionState.Open {
let accessToken = session.accessTokenData.accessToken
firebaseReference.authWithOAuthProvider facebook，token：accessToken，
withCompletionBlock：{error，authData in

if error！= nil {
//登录失败
} else {
//登录！
println（Logged in！\（authData））
}
}）
}
}）
}

（即如果您然后删除应用程序，并重新安装在同一设备上，这个调用 - 我正在使用的应用程序委托确定用户是否登录 - 将永远返回他们登录。

  if firebaseReference.authData == nil {
 //未登录
}其他{
 //登录
} 
  

为什么呢？如果您在iOS模拟器中重置了内容和设置，并且安装了应用程序，那么

code> firebaseReference.authData 属性将再一次为 nil 。

解决方案

Firebase身份验证会话在iOS密钥链中保留在用户的设备上。当应用程序被卸载时，应用程序的钥匙串数据是 。

如果您想要手动清除数据，在应用程序中存储一些额外的元数据，并手动调用 FirebaseRef.unauth（）来清除持久会话。请参阅＃4747404：卸载应用程序时删除钥匙串项目作为额外的参考。

After authenticating a user with the following code (below is a trimmed version of my code, so only the successful login logic is shown)...

let firebaseReference = Firebase(url: "https://MY-FIREBASE.firebaseio.com")

 

FBSession.openActiveSessionWithReadPermissions(["public_profile", "user_friends"], allowLoginUI: true,
    completionHandler: { session, state, error in

        if state == FBSessionState.Open {
            let accessToken = session.accessTokenData.accessToken
            firebaseReference.authWithOAuthProvider("facebook", token: accessToken,
                withCompletionBlock: { error, authData in

                    if error != nil {
                        // Login failed.
                    } else {
                        // Logged in!
                        println("Logged in! \(authData)")
                    }
            })
        }
    })
}

(I.e. Launching and running the app, logging in successfully).

If you then delete the app and reinstall it on the same device, this call - which I am using in the app delegate to determine if a user is logged in - will always return that they are logged in.

if firebaseReference.authData == nil {
    // Not logged in
} else {
    // Logged in
}

Why is that? I would have thought deleting the app and reinstalling it should wipe all data.

If you reset the Content and Settings in the iOS simulator, and the install the app, the firebaseReference.authData property will once again be nil.

解决方案

The Firebase authentication session is persisted on the user's device in the iOS keychain. The keychain data for the application is not removed when the application is uninstalled.

If you're looking to manually clear the data, you can store some additional metadata along with your application and manually call FirebaseRef.unauth() to clear the persisted session. See #4747404: Delete keychain items when an app is uninstalled for an additional reference.

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