Fix SonarQube vulnerabilities

Added logging to handle file io boolean returns
Added security related settings to xml factories and builders

Issue-ID: POLICY-2654
Change-Id: Ibc0a01f978bfc446e1dc1f8ad952d1305a7b7178
Signed-off-by: ToineSiebelink <toine.siebelink@est.tech>

3 files changed, 25 insertions, 8 deletions

diff --git a/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/handling/ApexModelWriter.java b/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/handling/ApexModelWriter.java
index 0dab08dcb..0763492fc 100644
--- a/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/handling/ApexModelWriter.java
+++ b/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/handling/ApexModelWriter.java
@@ -202,6 +202,9 @@ public class ApexModelWriter<C extends AxConcept> {
             // Write the concept into a DOM document, then transform to add CDATA fields and pretty
             // print, then write out the result
             final DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
+            docBuilderFactory.setAttribute(XMLConstants.ACCESS_EXTERNAL_DTD, "");
+            docBuilderFactory.setAttribute(XMLConstants.ACCESS_EXTERNAL_SCHEMA, "");
+
             docBuilderFactory.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING, true);
             final Document document = docBuilderFactory.newDocumentBuilder().newDocument();
 
@@ -223,6 +226,9 @@ public class ApexModelWriter<C extends AxConcept> {
     private Transformer getTransformer() throws TransformerConfigurationException {
         // Transform the DOM to the output stream
         final TransformerFactory transformerFactory = TransformerFactory.newInstance();
+        transformerFactory.setAttribute(XMLConstants.ACCESS_EXTERNAL_DTD, "");
+        transformerFactory.setAttribute(XMLConstants.ACCESS_EXTERNAL_STYLESHEET, "");
+
         final Transformer domTransformer = transformerFactory.newTransformer();
 
         // Pretty print
diff --git a/model/utilities/src/main/java/org/onap/policy/apex/model/utilities/DirectoryDeleteShutdownHook.java b/model/utilities/src/main/java/org/onap/policy/apex/model/utilities/DirectoryDeleteShutdownHook.java
index f0fd8950f..2d96a5954 100644
--- a/model/utilities/src/main/java/org/onap/policy/apex/model/utilities/DirectoryDeleteShutdownHook.java
+++ b/model/utilities/src/main/java/org/onap/policy/apex/model/utilities/DirectoryDeleteShutdownHook.java
@@ -1,19 +1,20 @@
 /*-
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2018 Ericsson. All rights reserved.
+ *  Modifications Copyright (C) 2020 Nordix Foundation.
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
- * 
+ *
  *      http://www.apache.org/licenses/LICENSE-2.0
- * 
+ *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
- * 
+ *
  * SPDX-License-Identifier: Apache-2.0
  * ============LICENSE_END=========================================================
  */
@@ -21,6 +22,8 @@
 package org.onap.policy.apex.model.utilities;
 
 import java.io.File;
+import org.slf4j.ext.XLogger;
+import org.slf4j.ext.XLoggerFactory;
 
 /**
  * The Class DirectoryShutdownHook removes the contents of a directory and the directory itself at shutdown.
@@ -28,6 +31,9 @@ import java.io.File;
  * @author Liam Fallon (liam.fallon@ericsson.com)
  */
 final class DirectoryDeleteShutdownHook extends Thread {
+
+    private static final XLogger LOGGER = XLoggerFactory.getXLogger(DirectoryUtils.class);
+
     // The directory we are acting on
     private final File tempDir;
 
@@ -48,7 +54,9 @@ final class DirectoryDeleteShutdownHook extends Thread {
         if (tempDir.exists()) {
             // Empty and delete the directory
             DirectoryUtils.emptyDirectory(tempDir);
-            tempDir.delete();
+            if (!tempDir.delete()) {
+                LOGGER.warn("Failed to delete directory {}", tempDir);
+            }
         }
     }
 }
diff --git a/model/utilities/src/main/java/org/onap/policy/apex/model/utilities/DirectoryUtils.java b/model/utilities/src/main/java/org/onap/policy/apex/model/utilities/DirectoryUtils.java
index b129ce21c..011dbb1b2 100644
--- a/model/utilities/src/main/java/org/onap/policy/apex/model/utilities/DirectoryUtils.java
+++ b/model/utilities/src/main/java/org/onap/policy/apex/model/utilities/DirectoryUtils.java
@@ -1,19 +1,20 @@
 /*
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
+ *  Modifications Copyright (C) 2020 Nordix Foundation.
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
- * 
+ *
  *      http://www.apache.org/licenses/LICENSE-2.0
- * 
+ *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
- * 
+ *
  * SPDX-License-Identifier: Apache-2.0
  * ============LICENSE_END=========================================================
  */
@@ -96,7 +97,9 @@ public abstract class DirectoryUtils {
                 }
 
                 // Delete the directory entry
-                directoryFile.delete();
+                if (!directoryFile.delete()) {
+                    LOGGER.warn("Failed to delete directory file {}", directoryFile);
+                }
             }
         }