Fix: Access to Swagger UI when login enabled (#5194)

Fixes for /swagger-ui/index.html & /v1/api-docs endpoints not being
accessible when login was enabled.

- `UserAuthenticationFilter.isPublicAuthEndpoint()` had gaps in its
check, missing `/v1/api-docs`
- Refactored `UserAuthenticationFilter` to use
`RequestUriUtils.isPublicAuthEndpoint()` instead of its own incorrect
method

Closes #5125 & #5028

---

### Testing (if applicable)

- [x] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md#6-testing)
for more details.

app/common/src/main/java/stirling/software/common/util/RequestUriUtils.java

@@ -162,10 +162,9 @@ public class RequestUriUtils {
                 // enableLogin)
                 || trimmedUri.startsWith(
                         "/api/v1/ui-data/footer-info") // Public footer configuration
-                || trimmedUri.startsWith("/v1/api-docs")
                 || trimmedUri.startsWith("/api/v1/invite/validate")
                 || trimmedUri.startsWith("/api/v1/invite/accept")
-                || trimmedUri.contains("/v1/api-docs");
+                || trimmedUri.startsWith("/v1/api-docs");
     }
 
     private static String stripContextPath(String contextPath, String requestURI) {

app/core/src/main/java/stirling/software/SPDF/config/OpenApiConfig.java

@@ -62,10 +62,14 @@ public class OpenApiConfig {
 
         // Add server configuration from environment variable
         String swaggerServerUrl = System.getenv("SWAGGER_SERVER_URL");
+        Server server;
         if (swaggerServerUrl != null && !swaggerServerUrl.trim().isEmpty()) {
-            Server server = new Server().url(swaggerServerUrl).description("API Server");
-            openAPI.addServersItem(server);
+            server = new Server().url(swaggerServerUrl).description("API Server");
+        } else {
+            // Use relative path so Swagger uses the current browser origin to avoid CORS issues when accessing via different ports
+            server = new Server().url("/").description("Current Server");
         }
+        openAPI.addServersItem(server);
 
         // Add ErrorResponse schema to components
         Schema<?> errorResponseSchema =

app/proprietary/src/main/java/stirling/software/proprietary/security/filter/JwtAuthenticationFilter.java

@@ -26,6 +26,7 @@ import jakarta.servlet.ServletException;
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
 
+import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
 
 import stirling.software.common.model.ApplicationProperties;
@@ -39,6 +40,7 @@ import stirling.software.proprietary.security.service.JwtServiceInterface;
 import stirling.software.proprietary.security.service.UserService;
 
 @Slf4j
+@RequiredArgsConstructor
 public class JwtAuthenticationFilter extends OncePerRequestFilter {
 
     private final JwtServiceInterface jwtService;
@@ -47,19 +49,6 @@ public class JwtAuthenticationFilter extends OncePerRequestFilter {
     private final AuthenticationEntryPoint authenticationEntryPoint;
     private final ApplicationProperties.Security securityProperties;
 
-    public JwtAuthenticationFilter(
-            JwtServiceInterface jwtService,
-            UserService userService,
-            CustomUserDetailsService userDetailsService,
-            AuthenticationEntryPoint authenticationEntryPoint,
-            ApplicationProperties.Security securityProperties) {
-        this.jwtService = jwtService;
-        this.userService = userService;
-        this.userDetailsService = userDetailsService;
-        this.authenticationEntryPoint = authenticationEntryPoint;
-        this.securityProperties = securityProperties;
-    }
-
     @Override
     protected void doFilterInternal(
             HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)
@@ -68,7 +57,11 @@ public class JwtAuthenticationFilter extends OncePerRequestFilter {
             filterChain.doFilter(request, response);
             return;
         }
-        if (isStaticResource(request.getContextPath(), request.getRequestURI())) {
+
+        String requestURI = request.getRequestURI();
+        String contextPath = request.getContextPath();
+
+        if (isStaticResource(contextPath, requestURI)) {
             filterChain.doFilter(request, response);
             return;
         }
@@ -77,10 +70,7 @@ public class JwtAuthenticationFilter extends OncePerRequestFilter {
             String jwtToken = jwtService.extractToken(request);
 
             if (jwtToken == null) {
-                // Allow specific auth endpoints to pass through without JWT
-                String requestURI = request.getRequestURI();
-                String contextPath = request.getContextPath();
-
+                // Allow auth endpoints to pass through without JWT
                 if (!isPublicAuthEndpoint(requestURI, contextPath)) {
                     // For API requests, return 401 JSON
                     String acceptHeader = request.getHeader("Accept");

app/proprietary/src/main/java/stirling/software/proprietary/security/filter/UserAuthenticationFilter.java

@@ -241,24 +241,6 @@ public class UserAuthenticationFilter extends OncePerRequestFilter {
         filterChain.doFilter(request, response);
     }
 
-    private static boolean isPublicAuthEndpoint(String requestURI, String contextPath) {
-        // Remove context path from URI to normalize path matching
-        String trimmedUri =
-                requestURI.startsWith(contextPath)
-                        ? requestURI.substring(contextPath.length())
-                        : requestURI;
-
-        // Public auth endpoints that don't require authentication
-        return trimmedUri.startsWith("/login")
-                || trimmedUri.startsWith("/auth/")
-                || trimmedUri.startsWith("/oauth2")
-                || trimmedUri.startsWith("/saml2")
-                || trimmedUri.startsWith("/api/v1/auth/login")
-                || trimmedUri.startsWith("/api/v1/auth/refresh")
-                || trimmedUri.startsWith("/api/v1/auth/logout")
-                || trimmedUri.startsWith("/api/v1/proprietary/ui-data/login");
-    }
-
     private enum UserLoginType {
         USERDETAILS("UserDetails"),
         OAUTH2USER("OAuth2User"),

frontend/src/core/constants/links.ts

@@ -1 +1 @@
-export const devApiLink = "https://registry.scalar.com/@stirlingpdf/apis/stirling-pdf-processing-api/";
+export const devApiLink = "/swagger-ui/index.html";