2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Modifications Copyright (c) 2019 Samsung
8 * ================================================================================
9 * Licensed under the Apache License, Version 2.0 (the "License");
10 * you may not use this file except in compliance with the License.
11 * You may obtain a copy of the License at
13 * http://www.apache.org/licenses/LICENSE-2.0
15 * Unless required by applicable law or agreed to in writing, software
16 * distributed under the License is distributed on an "AS IS" BASIS,
17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18 * See the License for the specific language governing permissions and
19 * limitations under the License.
20 * ============LICENSE_END=========================================================
23 package org.onap.so.apihandler.common;
26 import java.io.FileInputStream;
27 import java.io.IOException;
29 import javax.xml.XMLConstants;
30 import javax.xml.transform.Source;
31 import javax.xml.transform.stream.StreamSource;
32 import javax.xml.validation.Schema;
33 import javax.xml.validation.SchemaFactory;
34 import javax.xml.validation.Validator;
36 import org.apache.commons.io.IOUtils;
37 import org.onap.so.logger.ErrorCode;
38 import org.onap.so.logger.MessageEnum;
40 import org.slf4j.Logger;
41 import org.slf4j.LoggerFactory;
42 import org.xml.sax.SAXException;
44 public class XMLValidator {
46 private static String XSDS_PATH;
49 String prefixMsoPropertiesPath = System.getProperty ("mso.config.path");
50 if (prefixMsoPropertiesPath == null) {
51 prefixMsoPropertiesPath = "";
53 XSDS_PATH = prefixMsoPropertiesPath + "xsds/";
56 private String stringXsd;
57 private String errorMsg = null;
58 private SchemaFactory factory;
59 private Schema schema;
61 private static Logger logger = LoggerFactory.getLogger(XMLValidator.class);
64 public XMLValidator (String xsdFile){
66 try (FileInputStream xsdStream = new FileInputStream (XSDS_PATH + xsdFile)) {
68 stringXsd = IOUtils.toString (xsdStream);
70 factory = SchemaFactory.newInstance (XMLConstants.W3C_XML_SCHEMA_NS_URI);
71 factory.setResourceResolver (new PathResourceResolver (XSDS_PATH));
72 factory.setFeature (XMLConstants.FEATURE_SECURE_PROCESSING, true);
74 String quotedXsd = stringXsd.replaceAll (""", "\"");
75 Source src = new StreamSource (new java.io.StringReader (quotedXsd));
76 schema = factory.newSchema (src);
78 } catch (IOException | SAXException e) {
80 logger.debug ("Cannot open file {}", XSDS_PATH + xsdFile, e);
81 errorMsg = "ErrorDetails: xsd file " + xsdFile + "could not be opened - " + e.getMessage ();
85 // Returns null when XML valid, otherwise returns error details.
86 public String isXmlValid (String stringXml) {
88 if (errorMsg != null && !errorMsg.isEmpty ()) {
91 Source src2 = new StreamSource (new java.io.StringReader (stringXml));
92 Validator validator = schema.newValidator ();
93 validator.validate (src2);
95 } catch (IOException | SAXException e) {
96 logger.debug ("Exception: ", e);
97 return "ErrorDetails: " + e.getMessage ();
99 } catch (Exception e) {
100 logger.error("{} {} {}", MessageEnum.APIH_CANNOT_READ_SCHEMA.toString(),
101 ErrorCode.SchemaError.getValue(), "APIH cannot read schema file", e);
103 return "ErrorDetails: " + "Unable to read the schema file";