1 files changed, 103 insertions, 0 deletions
diff --git a/mso-api-handlers/mso-api-handler-common/src/main/java/org/openecomp/mso/apihandler/common/XMLValidator.java b/mso-api-handlers/mso-api-handler-common/src/main/java/org/openecomp/mso/apihandler/common/XMLValidator.java
new file mode 100644
index 0000000000..bd73b226a2
--- /dev/null
+++ b/mso-api-handlers/mso-api-handler-common/src/main/java/org/openecomp/mso/apihandler/common/XMLValidator.java
@@ -0,0 +1,103 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * OPENECOMP - MSO
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.mso.apihandler.common;
+
+
+import java.io.FileInputStream;
+import java.io.IOException;
+
+import javax.xml.XMLConstants;
+import javax.xml.transform.Source;
+import javax.xml.transform.stream.StreamSource;
+import javax.xml.validation.Schema;
+import javax.xml.validation.SchemaFactory;
+import javax.xml.validation.Validator;
+
+import org.apache.commons.io.IOUtils;
+import org.xml.sax.SAXException;
+
+import org.openecomp.mso.logger.MessageEnum;
+import org.openecomp.mso.logger.MsoAlarmLogger;
+import org.openecomp.mso.logger.MsoLogger;
+
+public class XMLValidator {
+
+    private static String XSDS_PATH;
+
+    static {
+        String prefixMsoPropertiesPath = System.getProperty ("mso.config.path");
+        if (prefixMsoPropertiesPath == null) {
+            prefixMsoPropertiesPath = "";
+        }
+        XSDS_PATH = prefixMsoPropertiesPath + "xsds/";
+    }
+
+    private String stringXsd;
+    private String errorMsg = null;
+    private SchemaFactory factory;
+    private Schema schema;
+
+    private static MsoLogger msoLogger = MsoLogger.getMsoLogger (MsoLogger.Catalog.APIH);
+    private static MsoAlarmLogger alarmLogger = new MsoAlarmLogger ();
+
+    public XMLValidator (String xsdFile) {
+
+        try (FileInputStream xsdStream = new FileInputStream (XSDS_PATH + xsdFile)) {
+
+            stringXsd = IOUtils.toString (xsdStream);
+
+            factory = SchemaFactory.newInstance (XMLConstants.W3C_XML_SCHEMA_NS_URI);
+            factory.setResourceResolver ((new PathResourceResolver (XSDS_PATH)));
+            factory.setFeature (XMLConstants.FEATURE_SECURE_PROCESSING, true);
+
+            String quotedXsd = stringXsd.replaceAll ("&#34;", "\"");
+            Source src = new StreamSource (new java.io.StringReader (quotedXsd));
+            schema = factory.newSchema (src);
+
+        } catch (IOException | SAXException e) {
+            msoLogger.debug ("Cannot open file " + XSDS_PATH + xsdFile, e);
+            errorMsg = "ErrorDetails: xsd file " + xsdFile + "could not be opened - " + e.getMessage ();
+        }
+    }
+
+    // Returns null when XML valid, otherwise returns error details.
+    public String isXmlValid (String stringXml) {
+        try {
+            if (errorMsg != null && !errorMsg.isEmpty ()) {
+                return errorMsg;
+            }
+            Source src2 = new StreamSource (new java.io.StringReader (stringXml));
+            Validator validator = schema.newValidator ();
+            validator.validate (src2);
+
+        } catch (IOException | SAXException e) {
+            msoLogger.debug ("Exception: ", e);
+            return ("ErrorDetails: " + e.getMessage ());
+
+        } catch (Exception e) {
+            msoLogger.error (MessageEnum.APIH_CANNOT_READ_SCHEMA, "", "", MsoLogger.ErrorCode.SchemaError, "APIH cannot read schema file", e);
+            alarmLogger.sendAlarm ("MsoConfigurationError", MsoAlarmLogger.CRITICAL, "Unable to read the schema file");
+            return "ErrorDetails: " + "Unable to read the schema file";
+        }
+
+        return null;
+    }
+}