[#39] feat : stomp security 기능 구현

src/main/java/com/example/CatchStudy/global/config/StompHandler.java

@@ -0,0 +1,52 @@
+package com.example.CatchStudy.global.config;
+
+import com.example.CatchStudy.domain.dto.response.Response;
+import com.example.CatchStudy.global.exception.CatchStudyException;
+import com.example.CatchStudy.global.exception.ErrorCode;
+import com.example.CatchStudy.global.jwt.JwtUtil;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import io.jsonwebtoken.ExpiredJwtException;
+import jakarta.servlet.http.HttpServletResponse;
+import lombok.RequiredArgsConstructor;
+import org.springframework.messaging.Message;
+import org.springframework.messaging.MessageChannel;
+import org.springframework.messaging.simp.stomp.StompCommand;
+import org.springframework.messaging.simp.stomp.StompHeaderAccessor;
+import org.springframework.messaging.support.ChannelInterceptor;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.stereotype.Component;
+import org.springframework.util.StringUtils;
+
+@Component
+@RequiredArgsConstructor
+public class StompHandler implements ChannelInterceptor {
+
+    private final JwtUtil jwtUtil;
+
+    @Override
+    public Message<?> preSend(Message<?> message, MessageChannel channel) {
+        StompHeaderAccessor accessor = StompHeaderAccessor.wrap(message);
+        String accessToken = "";
+        // 연결 요청에 대해 실행
+        if(accessor.getCommand() == StompCommand.CONNECT) {
+            accessToken = accessor.getFirstNativeHeader("Authorization");
+        }
+
+        if (StringUtils.hasText(accessToken) && accessToken.startsWith("Bearer ")) {
+            accessToken = accessToken.substring(7);
+        }
+
+        try {
+            jwtUtil.validateAccessToken(accessToken);
+        } catch (ExpiredJwtException e) {
+            throw new CatchStudyException(ErrorCode.EXPIRED_ACCESS_TOKEN);
+        }
+
+        Authentication authentication = jwtUtil.getAuthentication(accessToken);
+        SecurityContextHolder.getContext().setAuthentication(authentication);
+        accessor.setUser(authentication);
+
+        return message;
+    }
+}

src/main/java/com/example/CatchStudy/global/config/StompWebSocketConfig.java

@@ -2,6 +2,7 @@
 
 import lombok.RequiredArgsConstructor;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.messaging.simp.config.ChannelRegistration;
 import org.springframework.messaging.simp.config.MessageBrokerRegistry;
 import org.springframework.web.socket.config.annotation.EnableWebSocketMessageBroker;
 import org.springframework.web.socket.config.annotation.StompEndpointRegistry;
@@ -12,6 +13,8 @@
 @RequiredArgsConstructor
 public class StompWebSocketConfig implements WebSocketMessageBrokerConfigurer {
 
+    private final StompHandler stompHandler;
+
     @Override
     public void registerStompEndpoints(StompEndpointRegistry registry) {
 
@@ -26,4 +29,9 @@ public void configureMessageBroker(MessageBrokerRegistry registry) {
         registry.setApplicationDestinationPrefixes("/pub");     // 사용자 -> 서버
         registry.enableSimpleBroker("/sub");    // 서버 -> 사용자
     }
+
+    @Override
+    public void configureClientInboundChannel(ChannelRegistration registration) {
+        registration.interceptors(stompHandler);
+    }
 }