权限不足的c++实现代码
时间: 2023-08-06 13:10:26 浏览: 35
这里提供一个简单的权限控制的C++实现代码。
```c++
#include <iostream>
#include <string>
using namespace std;
class User {
private:
string username;
string password;
int permissionLevel;
public:
User(string username, string password, int permissionLevel) {
this->username = username;
this->password = password;
this->permissionLevel = permissionLevel;
}
bool checkPassword(string password) {
return this->password == password;
}
int getPermissionLevel() {
return permissionLevel;
}
};
class PermissionController {
private:
User* currentUser;
public:
PermissionController() {
currentUser = nullptr;
}
bool login(string username, string password) {
// 这里省略了从数据库中获取用户信息的步骤
User* user = new User(username, password, 0); // 假设获取到了用户信息
if (user->checkPassword(password)) {
currentUser = user;
return true;
}
delete user;
return false;
}
void logout() {
if (currentUser != nullptr) {
delete currentUser;
currentUser = nullptr;
}
}
bool hasPermission(int requiredPermissionLevel) {
if (currentUser == nullptr) {
return false;
}
return currentUser->getPermissionLevel() >= requiredPermissionLevel;
}
};
int main() {
PermissionController pc;
pc.login("admin", "123456");
if (pc.hasPermission(1)) {
cout << "User can perform action with permission level 1." << endl;
} else {
cout << "User does not have sufficient permission level." << endl;
}
pc.logout();
return 0;
}
```
在上述代码中,定义了一个 `User` 类来表示用户,包括用户名、密码和权限等级。另外还定义了一个 `PermissionController` 类来进行权限控制,其中包括用户登录、注销和检查权限等方法。在 `main` 函数中,我们可以通过 `PermissionController` 对象来进行登录和检查权限操作。