Question

我使用的是Auth0 SDK 1.1.0版。我正在使用 openid name email offline_access 范围。我在成功响应中成功获取凭证对象。但是凭证的到期对象总是为零。

var parameters = [String: String]()
parameters["deviceToken"] = "This is a device token from iOS simulator"
parameters["device"]      = UIDevice.current.identifierForVendor?.description ?? UIDevice.current.name

Auth0.authentication().login(usernameOrEmail: usernameField.text!, password: passwordField.text!,
                             multifactorCode: nil, connection: "Username-Password-Authentication",
                             scope: "openid name email offline_access",
                             parameters: parameters).start({ (result) in
                                switch result {
                                case .success(let credentials):
                                    WSDataManger.sharedInstance.saveCredentials(credentials: credentials)
                                    print("credentail expire date is \(credentials.expiresIn)")

                                case .failure(let error):
                                    print("Failed to login: \(error.localizedDescription)")


                             })
}

如何获得过期日期？

Answer 1

方法1 ：您可以解码idToken，您将获得exp和iat值。 expires_in可以通过JWT的exp和iat声明之间的差异来计算。

/// Decode the JWT token
func decodeJwtToken() -> String? {

    let tokenInfoArray = self.components(separatedBy: ".")
    if tokenInfoArray.count >= 2 {
        // First object array contain {"typ":"JWT","alg":"HS256"}
        //Second Object is required information
        let encodedBase64String = tokenInfoArray[1].base64String;
        guard let data = Data(base64Encoded: encodedBase64String, options: Data.Base64DecodingOptions(rawValue: 0)) else {
            return nil
        }

        guard let decodedString = String(data: data, encoding: .utf8) else { return nil }
        //remove null terminator Occurrences.
        let nullTerminatedString = decodedString.replacingOccurrences(of: "\0", with: "")
        //remove whitespace Occurrences.
        let formattedString = nullTerminatedString.replacingOccurrences(of: " ", with: "")
        return formattedString
    }
    return nil
}

方法2 ：您可以使用Auth0委托API获取expires_in并将其存储在默认值或Auth0 Keychain中。

  //  Renewing the expired token
func renewToken() {
    let payload = [
        "refresh_token" : defaults.value(forKey: "refresh_token"),
       "id_token" : defaults.value(forKey: "id_token"),
       "scope": "openid name email offline_access" ]
    Auth0.authentication().delegation(withParameters: payload).start { (result) in
        print(result)
        switch result {
        case .success(let credentials):
            if let value = credentials["id_token"] {
                defaults.setValue(value, forKey: "id_token")
            }
            if let value = credentials["expires_in"] as? Double {
                print("expires_in timestamp \(value)")
                //Calculate timestamp to date format.
            }
            defaults.synchronize()
        case .failure(let error):
              //Handle Error
              print(error)
        }
    }
}

Auth0 Credentials对象的Expire date属性始终为nil

1 个答案: