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fix: amm-1927 res headers based on allowed origins #119

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Merged
5Amogh merged 1 commit into from
Nov 20, 2025
Merged

fix: amm-1927 res headers based on allowed origins #119

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5 changes: 3 additions & 2 deletions src/main/java/com/wipro/fhir/config/CorsConfig.java
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Original file line number Diff line number Diff line change
Expand Up @@ -19,8 +19,9 @@ public void addCorsMappings(CorsRegistry registry) {
Arrays.stream(allowedOrigins.split(","))
.map(String::trim)
.toArray(String[]::new))
.allowedMethods("GET", "POST", "PUT", "DELETE", "OPTIONS")
.allowedHeaders("Content-Type", "Authorization")
.allowedMethods("GET", "POST", "PUT", "PATCH", "DELETE", "OPTIONS")
.allowedHeaders("Authorization", "Content-Type", "Accept", "Jwttoken",
"serverAuthorization", "ServerAuthorization", "serverauthorization", "Serverauthorization")
.exposedHeaders("Authorization")
.allowCredentials(true)
.maxAge(3600);
Expand Down
64 changes: 52 additions & 12 deletions src/main/java/com/wipro/fhir/utils/JwtUserIdValidationFilter.java
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Expand Up @@ -42,24 +42,55 @@ public void doFilter(ServletRequest servletRequest, ServletResponse servletRespo
logger.debug("Incoming Origin: {}", origin);
logger.debug("Allowed Origins Configured: {}", allowedOrigins);

String method = request.getMethod();
String uri = request.getRequestURI();

logger.debug("Incoming Origin: {}", origin);
logger.debug("Request Method: {}", method);
logger.debug("Request URI: {}", uri);
logger.debug("Allowed Origins Configured: {}", allowedOrigins);

if ("OPTIONS".equalsIgnoreCase(method)) {
if (origin == null) {
logger.warn("BLOCKED - OPTIONS request without Origin header | Method: {} | URI: {}", method, uri);
response.sendError(HttpServletResponse.SC_FORBIDDEN, "OPTIONS request requires Origin header");
return;
}
if (!isOriginAllowed(origin)) {
logger.warn("BLOCKED - Unauthorized Origin | Origin: {} | Method: {} | URI: {}", origin, method, uri);
response.sendError(HttpServletResponse.SC_FORBIDDEN, "Origin not allowed");
return;
}
} else {
// For non-OPTIONS requests, validate origin if present
if (origin != null && !isOriginAllowed(origin)) {
logger.warn("BLOCKED - Unauthorized Origin | Origin: {} | Method: {} | URI: {}", origin, method, uri);
response.sendError(HttpServletResponse.SC_FORBIDDEN, "Origin not allowed");
return;
}
}

String path = request.getRequestURI();
String contextPath = request.getContextPath();

if (origin != null && isOriginAllowed(origin)) {
response.setHeader("Access-Control-Allow-Origin", origin);
response.setHeader("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS");
response.setHeader("Access-Control-Allow-Headers", "Authorization, Content-Type, Accept, Jwttoken");
response.setHeader("Vary", "Origin");
response.setHeader("Access-Control-Allow-Credentials", "true");
addCorsHeaders(response, origin);
logger.info("Origin Validated | Origin: {} | Method: {} | URI: {}", origin, method, uri);

if ("OPTIONS".equalsIgnoreCase(method)) {
// OPTIONS (preflight) - respond with full allowed methods
response.setStatus(HttpServletResponse.SC_OK);
return;
}
} else {
logger.warn("Origin [{}] is NOT allowed. CORS headers NOT added.", origin);
}

if ("OPTIONS".equalsIgnoreCase(request.getMethod())) {
logger.info("OPTIONS request - skipping JWT validation");
response.setStatus(HttpServletResponse.SC_OK);
return;
if ("OPTIONS".equalsIgnoreCase(method)) {
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@vishwab1 vishwab1 Nov 19, 2025 •
edited
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@5Amogh The current implementation returns 200 OK for OPTIONS requests, which is the correct behavior for CORS preflight requests. Could you please revert it back to the original implementation? As per my understanding, if we return 403 for invalid origins, the browser displays a confusing error message. When we return 200 OK without CORS headers, the browser shows a clear and correct message: ‘CORS policy: No ‘Access-Control-Allow-Origin’ header is present

response.sendError(HttpServletResponse.SC_FORBIDDEN, "Origin not allowed for OPTIONS request");
return;
}
}

String path = request.getRequestURI();
String contextPath = request.getContextPath();
logger.info("JwtUserIdValidationFilter invoked for path: " + path);

// Log cookies for debugging
Expand Down Expand Up @@ -183,4 +214,13 @@ private void clearUserIdCookie(HttpServletResponse response) {
cookie.setMaxAge(0); // Invalidate the cookie
response.addCookie(cookie);
}

private void addCorsHeaders(HttpServletResponse response, String origin) {
response.setHeader("Access-Control-Allow-Origin", origin); // Never use wildcard
response.setHeader("Access-Control-Allow-Methods", "GET, POST, PUT, PATCH, DELETE, OPTIONS");
response.setHeader("Access-Control-Allow-Headers",
"Authorization, Content-Type, Accept, Jwttoken, serverAuthorization, ServerAuthorization, serverauthorization, Serverauthorization");
response.setHeader("Access-Control-Allow-Credentials", "true");
response.setHeader("Access-Control-Max-Age", "3600");
}
}
31 changes: 30 additions & 1 deletion src/main/java/com/wipro/fhir/utils/http/HTTPRequestInterceptor.java
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Original file line number Diff line number Diff line change
Expand Up @@ -23,11 +23,15 @@

import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;

import java.util.Arrays;

import javax.ws.rs.core.MediaType;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
Expand All @@ -42,6 +46,9 @@ public class HTTPRequestInterceptor implements HandlerInterceptor {

Logger logger = LoggerFactory.getLogger(this.getClass().getSimpleName());

@Value("${cors.allowed-origins}")
private String allowedOrigins;

@Autowired
public void setValidator(Validator validator) {
this.validator = validator;
Expand Down Expand Up @@ -105,7 +112,13 @@ public boolean preHandle(HttpServletRequest request, HttpServletResponse respons
response.setContentType(MediaType.APPLICATION_JSON);

response.setContentLength(output.toString().length());
response.setHeader("Access-Control-Allow-Origin", "*");
String origin = request.getHeader("Origin");
if (origin != null && isOriginAllowed(origin)) {
response.setHeader("Access-Control-Allow-Origin", origin);
response.setHeader("Access-Control-Allow-Credentials", "true");
} else if (origin != null) {
logger.warn("CORS headers NOT added for error response | Unauthorized origin: {}", origin);
}
response.getOutputStream().print(output.toString());

status = false;
Expand Down Expand Up @@ -135,4 +148,20 @@ public void afterCompletion(HttpServletRequest request, HttpServletResponse resp
logger.debug("In afterCompletion Request Completed");
}

private boolean isOriginAllowed(String origin) {
if (origin == null || allowedOrigins == null || allowedOrigins.trim().isEmpty()) {
return false;
}

return Arrays.stream(allowedOrigins.split(","))
.map(String::trim)
.anyMatch(pattern -> {
String regex = pattern
.replace(".", "\\.")
.replace("*", ".*")
.replace("http://localhost:.*", "http://localhost:\\d+");
return origin.matches(regex);
});
}

}