Fix security issue in api interceptor

Issue-ID: DCAEGEN2-1880
Change-Id: I5b93dd8405ef9a0a364c6e1224afcfacc9df1fba
Signed-off-by: Remigiusz Janeczek <remigiusz.janeczek@nokia.com>

1 files changed, 12 insertions, 2 deletions

diff --git a/src/main/java/org/onap/dcae/restapi/ApiAuthInterceptor.java b/src/main/java/org/onap/dcae/restapi/ApiAuthInterceptor.java
index a9281594..f1734080 100644
--- a/src/main/java/org/onap/dcae/restapi/ApiAuthInterceptor.java
+++ b/src/main/java/org/onap/dcae/restapi/ApiAuthInterceptor.java
@@ -55,8 +55,8 @@ public class ApiAuthInterceptor extends HandlerInterceptorAdapter {
 
         SubjectMatcher subjectMatcher = new SubjectMatcher(settings,(X509Certificate[]) request.getAttribute(CERTIFICATE_X_509));
 
-        if(!settings.authMethod().equalsIgnoreCase(AuthMethodType.NO_AUTH.value()) && request.getServerPort() == settings.httpPort() ){
-            if(request.getRequestURI().replaceAll("^/|/$", "").equalsIgnoreCase("healthcheck")){
+        if(isHttpPortCalledWithAuthTurnedOn(request)){
+            if(isHealthcheckCalledFromInsideCluster(request)){
                 return true;
             }
             response.getWriter().write("Operation not permitted");
@@ -78,6 +78,16 @@ public class ApiAuthInterceptor extends HandlerInterceptorAdapter {
         return true;
     }
 
+    private boolean isHttpPortCalledWithAuthTurnedOn(HttpServletRequest request) {
+        return !settings.authMethod().equalsIgnoreCase(AuthMethodType.NO_AUTH.value())
+                && request.getLocalPort() == settings.httpPort();
+    }
+
+    private boolean isHealthcheckCalledFromInsideCluster(HttpServletRequest request) {
+        return request.getRequestURI().replaceAll("^/|/$", "").equalsIgnoreCase("healthcheck")
+                && request.getServerPort() == settings.httpPort();
+    }
+
     private boolean validateBasicHeader(HttpServletRequest request, HttpServletResponse response)
         throws IOException {
         String authorizationHeader = request.getHeader("Authorization");