Question

我能够存储和检索凭据，但我无法删除它们。我在这里创建了一个简单的包装器，但是clear方法不起作用。在我打电话给清楚后，凭证似乎仍然存在。我需要做些什么才能清除凭证？

class PasswordManager {
    static let shared = PasswordManager() // singleton instance

    private lazy var protectionSpace: URLProtectionSpace = {
        return URLProtectionSpace(host: "somehost.com",
                                  port: 0,
                                  protocol: "http",
                                  realm: nil,
                                  authenticationMethod: nil)
    }()

    private init() { }

    func password(for userID: String) -> String? {
        guard let credentials = URLCredentialStorage.shared.credentials(for: protectionSpace) else { return nil }
        return credentials[userID]?.password
    }

    func set(password: String, for userID: String) {
        let credential = URLCredential(user: userID, password: password, persistence: .permanent)
        URLCredentialStorage.shared.set(credential, for: protectionSpace)
    }

    func clear(for userID: String) {
        if let password = password(for: userID) {
            let credential = URLCredential(user: userID, password: password, persistence: .permanent)
            URLCredentialStorage.shared.remove(credential, for: protectionSpace)
        }
    }
}

Answer 1

获胜：

func clear(for userID: String) {
    guard let creds = URLCredentialStorage.shared.credentials(for: protectionSpace) else { return }
    guard let cred = creds[userID] else { return }
    URLCredentialStorage.shared.remove(cred, for: protectionSpace)
}

Answer 2

要删除可同步的凭据，您必须在删除功能中提供一个选项。

def repeat(w,n):
    skip = max(range(len(w)),key=lambda i:i*(w[:i]==w[-i:]))
    return w + (n-1)*w[skip:]

这删除了我没有删除的凭据。

如何从URLCredentialStorage中删除凭据

2 个答案: