AdminFilter.java

package com.securefileshare.filters;

import com.securefileshare.models.User;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.IOException;

public class AdminFilter implements Filter {
    
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
        // Initialization code if needed
    }
    
    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) 
            throws IOException, ServletException {
        
        HttpServletRequest httpRequest = (HttpServletRequest) request;
        HttpServletResponse httpResponse = (HttpServletResponse) response;
        HttpSession session = httpRequest.getSession(false);
        
        if (session == null) {
            httpResponse.sendRedirect(httpRequest.getContextPath() + "/jsp/auth/login.jsp");
            return;
        }
        
        User user = (User) session.getAttribute("user");
        
        if (user == null || !"ADMIN".equals(user.getRole())) {
            httpResponse.sendRedirect(httpRequest.getContextPath() + "/dashboard");
            return;
        }
        
        chain.doFilter(request, response);
    }
    
    @Override
    public void destroy() {
        // Cleanup code if needed
    }
}