[HTTP 로깅 개선] HttpLoggingFilter에서 password 파라미터 및 cookie, Set-Cookie 헤더의 민감 정보를 마스킹하는 기능을 추가하여 보안성을 강화

src/main/java/com/bio/bio_backend/global/filter/HttpLoggingFilter.java

@@ -112,6 +112,8 @@ public class HttpLoggingFilter extends OncePerRequestFilter {
                 .replaceAll("(?i)(\"AccessToken\"\\s*:\\s*\")([^\"]+)(\")", "$1***$3")
                 .replaceAll("(?i)(\"RefreshToken\"\\s*:\\s*\")([^\"]+)(\")", "$1***$3")
                 .replaceAll("(?i)(\"authorization\"\\s*:\\s*\")([^\"]+)(\")", "$1***$3");
+        // x-www-form-urlencoded 형태의 password 파라미터 마스킹
+        masked = masked.replaceAll("(?i)(^|[&])password=([^&]*)", "$1password=***");
         return masked;
     }
 
@@ -120,11 +122,18 @@ public class HttpLoggingFilter extends OncePerRequestFilter {
         // 필요한 헤더만 추리거나, 전부 찍고 민감한 건 마스킹
         Collections.list(request.getHeaderNames()).forEach(name -> {
             String value = request.getHeader(name);
-            if ("authorization".equalsIgnoreCase(name) && value != null) {
-                headers.put(name, value.startsWith("Bearer ") ? "Bearer ***" : "***");
-            } else {
-                headers.put(name, value);
+            if (value == null) {
+                headers.put(name, null);
+                return;
             }
+
+            if ("cookie".equalsIgnoreCase(name)) {
+                headers.put(name, maskCookieHeader(value));
+                return;
+            }
+
+            // 기타 헤더는 그대로 기록 (요구사항에 따라 최소 마스킹 적용)
+            headers.put(name, value);
         });
         return headers.toString();
     }
@@ -132,11 +141,17 @@ public class HttpLoggingFilter extends OncePerRequestFilter {
     private String getResponseHeaders(HttpServletResponse response) {
         Map<String, String> headers = new LinkedHashMap<>();
         for (String name : response.getHeaderNames()) {
-            if ("authorization".equalsIgnoreCase(name)) {
-                headers.put(name, "***");
-            } else {
-                headers.put(name, String.join(",", response.getHeaders(name)));
+            if ("set-cookie".equalsIgnoreCase(name)) {
+                List<String> values = new ArrayList<>(response.getHeaders(name));
+                List<String> masked = new ArrayList<>();
+                for (String v : values) {
+                    masked.add(maskSetCookieHeader(v));
                 }
+                headers.put(name, String.join(",", masked));
+                continue;
+            }
+
+            headers.put(name, String.join(",", response.getHeaders(name)));
         }
         if (response.getContentType() != null) {
             headers.putIfAbsent("Content-Type", response.getContentType());
@@ -144,6 +159,24 @@ public class HttpLoggingFilter extends OncePerRequestFilter {
         return headers.toString();
     }
 
+    // Cookie 헤더: "a=1; AccessToken=xxx; RefreshToken=yyy" 형태 중 AccessToken/RefreshToken만 마스킹
+    private String maskCookieHeader(String cookieHeader) {
+        if (cookieHeader == null || cookieHeader.isEmpty()) return cookieHeader;
+        String masked = cookieHeader
+                .replaceAll("(?i)(^|;\\s*)(AccessToken)=([^;]*)", "$1$2=***")
+                .replaceAll("(?i)(^|;\\s*)(RefreshToken)=([^;]*)", "$1$2=***");
+        return masked;
+    }
+
+    // Set-Cookie: "AccessToken=xxx; Path=/; HttpOnly; ..." 형태 중 AccessToken/RefreshToken만 마스킹
+    private String maskSetCookieHeader(String setCookie) {
+        if (setCookie == null || setCookie.isEmpty()) return setCookie;
+        String masked = setCookie
+                .replaceAll("(?i)^(AccessToken)=([^;]*)", "$1=***")
+                .replaceAll("(?i)^(RefreshToken)=([^;]*)", "$1=***");
+        return masked;
+    }
+
     @Override
     protected boolean shouldNotFilter(HttpServletRequest request) {
         String path = request.getRequestURI();