在设计一个C++解压库的用户权限管理系统时,需要考虑以下几个关键点:
下面是一个简单的用户权限管理系统的设计示例:
#include <iostream>
#include <string>
#include <unordered_map>
class User {
public:
User(const std::string& username, const std::string& password)
: username_(username), password_(password) {}
bool authenticate(const std::string& username, const std::string& password) const {
return username_ == username && password_ == password;
}
private:
std::string username_;
std::string password_;
};
class UserManager {
public:
void addUser(const std::string& username, const std::string& password) {
users_[username] = User(username, password);
}
bool authenticateUser(const std::string& username, const std::string& password) const {
auto it = users_.find(username);
if (it != users_.end()) {
return it->second.authenticate(username, password);
}
return false;
}
private:
std::unordered_map<std::string, User> users_;
};
enum class UserRole {
ADMIN,
USER
};
class User {
public:
User(const std::string& username, const std::string& password, UserRole role)
: username_(username), password_(password), role_(role) {}
UserRole getRole() const {
return role_;
}
private:
std::string username_;
std::string password_;
UserRole role_;
};
class UserManager {
public:
void addUser(const std::string& username, const std::string& password, UserRole role) {
users_[username] = User(username, password, role);
}
UserRole getUserRole(const std::string& username) const {
auto it = users_.find(username);
if (it != users_.end()) {
return it->second.getRole();
}
return UserRole::USER; // Default to user if not found
}
private:
std::unordered_map<std::string, User> users_;
};
class File {
public:
File(const std::string& path) : path_(path) {}
bool canAccess(const User& user) const {
return user.getRole() == UserRole::ADMIN || hasAccessPermission(user);
}
void grantAccess(const User& user) {
accessPermissions_[user.getUsername()] = true;
}
void revokeAccess(const std::string& username) {
accessPermissions_.erase(username);
}
private:
std::string path_;
std::unordered_map<std::string, bool> accessPermissions_;
bool hasAccessPermission(const User& user) const {
auto it = accessPermissions_.find(user.getUsername());
return it != accessPermissions_.end() && it->second;
}
};
class FileManager {
public:
void addFile(const std::string& path) {
files_[path] = File(path);
}
bool canAccessFile(const std::string& username, const std::string& path) const {
auto it = files_.find(path);
if (it != files_.end()) {
return it->second.canAccess(getCurrentUser());
}
return false;
}
void grantFileAccess(const std::string& username, const std::string& path) {
auto it = files_.find(path);
if (it != files_.end()) {
it->second.grantAccess(getCurrentUser());
}
}
void revokeFileAccess(const std::string& username, const std::string& path) {
auto it = files_.find(path);
if (it != files_.end()) {
it->second.revokeAccess(username);
}
}
private:
std::unordered_map<std::string, File> files_;
User* currentUser_ = nullptr; // This should be set in a real application
User* getCurrentUser() const {
return currentUser_;
}
};
#include <fstream>
#include <iostream>
#include <string>
class Logger {
public:
static void log(const std::string& message) {
std::ofstream logFile("access_log.txt", std::ios::app);
if (logFile.is_open()) {
logFile << message << std::endl;
logFile.close();
} else {
std::cerr << "Unable to open log file" << std::endl;
}
}
};
class FileManager {
public:
void accessFile(const std::string& username, const std::string& path, bool canAccess) const {
Logger::log(username + " accessed " + path + (canAccess ? " successfully" : " denied"));
}
};
确保系统的安全性,例如使用加密存储密码,定期更新密码策略,使用HTTPS等。
以上是一个简单的用户权限管理系统的设计示例。实际应用中可能需要更多的功能和更复杂的逻辑,例如多因素认证、密码哈希存储、细粒度权限控制等。
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