serve_template/src/main/java/space/anyi/serve/config/SecurityConfig.java

package space.anyi.serve.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpMethod;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.authentication.configuration.AuthenticationConfiguration;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.method.configuration.EnableMethodSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configurers.AbstractHttpConfigurer;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.SecurityFilterChain;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
import space.anyi.serve.filter.JwtAuthenticationFilter;
import space.anyi.serve.handler.security.JwtAccessDeniedHandler;
import space.anyi.serve.handler.security.JwtAuthenticationEntryPoint;

@EnableWebSecurity
@EnableMethodSecurity(prePostEnabled = true)
@Configuration
public class SecurityConfig {

    private final JwtAuthenticationFilter jwtAuthenticationFilter;
    private final JwtAuthenticationEntryPoint jwtAuthenticationEntryPoint;
    private final JwtAccessDeniedHandler jwtAccessDeniedHandler;

    public SecurityConfig(JwtAuthenticationFilter jwtAuthenticationFilter,
                          JwtAuthenticationEntryPoint jwtAuthenticationEntryPoint,
                          JwtAccessDeniedHandler jwtAccessDeniedHandler) {
        this.jwtAuthenticationFilter = jwtAuthenticationFilter;
        this.jwtAuthenticationEntryPoint = jwtAuthenticationEntryPoint;
        this.jwtAccessDeniedHandler = jwtAccessDeniedHandler;
    }

    @Bean
    public PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }

    @Bean
    public AuthenticationManager authenticationManager(AuthenticationConfiguration configuration) throws Exception {
        return configuration.getAuthenticationManager();
    }

    @Bean
    public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
        http
                .csrf(AbstractHttpConfigurer::disable)
                .sessionManagement(session -> session.sessionCreationPolicy(SessionCreationPolicy.STATELESS))
                .authorizeHttpRequests(authorize -> authorize
                        .requestMatchers("/auth/login", "/auth/register").permitAll()
                        .requestMatchers("/swagger-ui/**", "/v3/api-docs/**", "/swagger-ui.html").permitAll()
                        .requestMatchers(HttpMethod.GET, "/meta/**").permitAll()
                        .requestMatchers(HttpMethod.GET, "/posts/**").permitAll()
                        .requestMatchers(HttpMethod.GET, "/config/**").permitAll()
                        .requestMatchers(HttpMethod.OPTIONS, "/**").permitAll()
                        .anyRequest().authenticated()
                )
                .exceptionHandling(ex -> ex
                        .authenticationEntryPoint(jwtAuthenticationEntryPoint)
                        .accessDeniedHandler(jwtAccessDeniedHandler)
                )
                .addFilterBefore(jwtAuthenticationFilter, UsernamePasswordAuthenticationFilter.class);

        return http.build();
    }
}