彩虹域名授权管理系统

class DomainAuthorizationSystem:
    def __init__(self):
        self.authorized_domains = {}

    def add_domain(self, domain, user):
        if domain not in self.authorized_domains:
            self.authorized_domains[domain] = user
            print(f"Domain {domain} authorized to {user}")
        else:
            print(f"Domain {domain} is already authorized")

    def revoke_domain(self, domain):
        if domain in self.authorized_domains:
            del self.authorized_domains[domain]
            print(f"Domain {domain} revoked")
        else:
            print(f"Domain {domain} is not authorized")

    def check_domain(self, domain):
        if domain in self.authorized_domains:
            print(f"Domain {domain} is authorized to {self.authorized_domains[domain]}")
        else:
            print(f"Domain {domain} is not authorized")

# 示例使用
system = DomainAuthorizationSystem()
system.add_domain("example.com", "user1")
system.check_domain("example.com")
system.revoke_domain("example.com")
system.check_domain("example.com")