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Fix 4/에러 수정 #5

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merged 4 commits into from
Oct 28, 2023
Merged

Fix 4/에러 수정 #5

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4290f53
[fix] 에러 처리 위치 바꿈
Ryeolee Oct 27, 2023
10ebbe6
[fix] 에러 메시지 json으로 파싱
Ryeolee Oct 27, 2023
859169a
[fix] 에러 메시지 json으로 파싱
Ryeolee Oct 27, 2023
0bf29b8
[fix] gateway 에러 메시지 완료
Ryeolee Oct 27, 2023
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2 changes: 1 addition & 1 deletion .github/workflows/gradle.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -9,7 +9,7 @@ name: Java CI with Gradle

on:
push:
branches: [ "main" ]
branches: [ "feature_4/에러-수정" ]
pull_request:
branches: [ "dev" ]

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125 changes: 48 additions & 77 deletions src/main/java/com/example/farmusgateway/filter/JwtAuthenticationGatewayFilterFactory.java
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Original file line number Diff line number Diff line change
@@ -1,6 +1,8 @@
package com.example.farmusgateway.filter;


import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import io.jsonwebtoken.ExpiredJwtException;
import io.jsonwebtoken.JwtException;
import io.jsonwebtoken.Jwts;
Expand All @@ -10,14 +12,17 @@
import org.springframework.beans.factory.annotation.Value;
import org.springframework.cloud.gateway.filter.GatewayFilter;
import org.springframework.cloud.gateway.filter.factory.AbstractGatewayFilterFactory;
import org.springframework.core.io.buffer.DataBuffer;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.http.server.reactive.ServerHttpResponse;
import org.springframework.stereotype.Component;
import org.springframework.web.server.ServerWebExchange;
import reactor.core.publisher.Mono;

import java.nio.charset.StandardCharsets;

@Component
@Slf4j
public class JwtAuthenticationGatewayFilterFactory extends AbstractGatewayFilterFactory<JwtAuthenticationGatewayFilterFactory.Config> {
Expand All @@ -30,109 +35,75 @@ public JwtAuthenticationGatewayFilterFactory() {

}

// login -> token -> users (with token) -> header(include token)

@Override
public GatewayFilter apply(Config config) {
return (exchange, chain) -> {
ServerHttpRequest request = exchange.getRequest();
ServerHttpResponse response = exchange.getResponse();

String authorizationHeader = request.getHeaders().get(HttpHeaders.AUTHORIZATION).get(0);
log.info("authorizationHeader : {}", authorizationHeader);
log.info("authorizationHeader: {}", authorizationHeader);
String jwt = authorizationHeader.replace("Bearer ", "");
log.info("jwt : {}", jwt);
log.info("jwt: {}", jwt);

String subject = decode(jwt);
request.mutate()
.header("user", subject)
.build();
try {
String subject = Jwts.parserBuilder().setSigningKey(secret).build()
.parseClaimsJws(jwt).getBody()
.getSubject();

log.info("request.getURI().toString() : {}", request.getURI().toString());
if (subject == null || subject.isEmpty()) {
return onError(response, "JWT token is not valid", HttpStatus.UNAUTHORIZED);
}

// get url after endpoint
int index = request.getURI().toString().indexOf("/api");
String url = request.getURI().toString().substring(index);
String decodedSubject = decode(jwt);
request.mutate().header("user", decodedSubject).build();

log.info("url : {}", url);

if(url.equals("/api/user/reissue-token")) {
return chain.filter(exchange);
}
// get url after endpoint
int index = request.getURI().toString().indexOf("/api");
String url = request.getURI().toString().substring(index);
log.info("url: {}", url);

if(!request.getHeaders().containsKey(HttpHeaders.AUTHORIZATION)) {
return onError(exchange, "no authorization header", HttpStatus.UNAUTHORIZED);
}
if (url.equals("/api/user/reissue-token")) {
return chain.filter(exchange);
}

if(!isJwtValid(jwt, exchange)) {
return onError(exchange, "JWT token is not valid", HttpStatus.UNAUTHORIZED);
return chain.filter(exchange);
} catch (IllegalArgumentException e) {
return onError(response, "Invalid access token header", HttpStatus.BAD_REQUEST);
} catch (io.jsonwebtoken.security.SecurityException | MalformedJwtException e) {
return onError(response, "Verification error", HttpStatus.UNAUTHORIZED);
} catch (ExpiredJwtException e) {
return onError(response, "Token expired", HttpStatus.PRECONDITION_FAILED);
} catch (JwtException e) {
return onError(response, "JWT error", HttpStatus.UNAUTHORIZED);
}

// 헤더 출력
request.getHeaders().forEach((k, v) -> {
log.info("{} : {}", k, v);
});

// Custom Post Filter
return chain.filter(exchange);
};
}

private boolean isJwtValid(String jwt, ServerWebExchange exchange) {
boolean returnValue = true;

try {
String subject = Jwts.parserBuilder().setSigningKey(secret).build()
.parseClaimsJws(jwt).getBody()
.getSubject();

log.info("subject : {}", subject);

if (subject == null || subject.isEmpty()) {
returnValue = false;
onError(exchange, "JWT token is not valid", HttpStatus.UNAUTHORIZED);
}
} catch (IllegalArgumentException e) {
returnValue = false;
onError(exchange, "Invalid access token header", HttpStatus.BAD_REQUEST);
} catch (io.jsonwebtoken.security.SecurityException | MalformedJwtException e) {
returnValue = false;
onError(exchange, "Verification error", HttpStatus.UNAUTHORIZED);
} catch (ExpiredJwtException e) {
returnValue = false;
onError(exchange, "Token expired", HttpStatus.PRECONDITION_FAILED);
} catch (JwtException e) {
returnValue = false;
onError(exchange, "JWT error", HttpStatus.UNAUTHORIZED);
}

return returnValue;
}

public String decode(String token) {

String subject = null;
try {
subject = Jwts.parser().setSigningKey(secret)
.parseClaimsJws(token).getBody()
.getSubject();
} catch(Exception ex) {
onError(null, "JWT error", HttpStatus.UNAUTHORIZED);
}

if(subject == null || subject.isEmpty()) {
onError(null, "JWT error", HttpStatus.UNAUTHORIZED);
}

subject = Jwts.parser().setSigningKey(secret)
.parseClaimsJws(token).getBody()
.getSubject();

return subject;
}

// Mono, Flux -> Spring WebFlux
private Mono<Void> onError(ServerWebExchange exchange, String error, HttpStatus httpStatus) {
ServerHttpResponse response = exchange.getResponse();
response.setStatusCode(httpStatus);
private Mono<Void> onError(ServerHttpResponse response, String message, HttpStatus status) {

int statusCode = status.value(); // 상태 코드 가져오기
response.setStatusCode(status);
response.getHeaders().setContentType(MediaType.APPLICATION_JSON);

log.error(error);
// JSON 포맷으로 응답 데이터 구성
String jsonResponse = "{\"message\": \"" + message + "\", \"code\":" + statusCode + "}";

return response.setComplete();
DataBuffer buffer = response.bufferFactory().wrap(jsonResponse.getBytes(StandardCharsets.UTF_8));
return response.writeWith(Mono.just(buffer));
}

@Data
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