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;
28 import javax.xml.XMLConstants;
29 import javax.xml.transform.Source;
30 import javax.xml.transform.stream.StreamSource;
31 import javax.xml.validation.Schema;
32 import javax.xml.validation.SchemaFactory;
33 import javax.xml.validation.Validator;
34 import org.apache.commons.io.IOUtils;
35 import org.onap.so.logger.ErrorCode;
36 import org.onap.so.logger.MessageEnum;
37 import org.slf4j.Logger;
38 import org.slf4j.LoggerFactory;
39 import org.xml.sax.SAXException;
41 public class XMLValidator {
43 private static String XSDS_PATH;
46 String prefixMsoPropertiesPath = System.getProperty("mso.config.path");
47 if (prefixMsoPropertiesPath == null) {
48 prefixMsoPropertiesPath = "";
50 XSDS_PATH = prefixMsoPropertiesPath + "xsds/";
53 private String stringXsd;
54 private String errorMsg = null;
55 private SchemaFactory factory;
56 private Schema schema;
58 private static Logger logger = LoggerFactory.getLogger(XMLValidator.class);
61 public XMLValidator(String xsdFile) {
63 try (FileInputStream xsdStream = new FileInputStream(XSDS_PATH + xsdFile)) {
65 stringXsd = IOUtils.toString(xsdStream);
67 factory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
68 factory.setResourceResolver(new PathResourceResolver(XSDS_PATH));
69 factory.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING, true);
71 String quotedXsd = stringXsd.replaceAll(""", "\"");
72 Source src = new StreamSource(new java.io.StringReader(quotedXsd));
73 schema = factory.newSchema(src);
75 } catch (IOException | SAXException e) {
77 logger.debug("Cannot open file {}", XSDS_PATH + xsdFile, e);
78 errorMsg = "ErrorDetails: xsd file " + xsdFile + "could not be opened - " + e.getMessage();
82 // Returns null when XML valid, otherwise returns error details.
83 public String isXmlValid(String stringXml) {
85 if (errorMsg != null && !errorMsg.isEmpty()) {
88 Source src2 = new StreamSource(new java.io.StringReader(stringXml));
89 Validator validator = schema.newValidator();
90 validator.validate(src2);
92 } catch (IOException | SAXException e) {
93 logger.debug("Exception: ", e);
94 return "ErrorDetails: " + e.getMessage();
96 } catch (Exception e) {
97 logger.error("{} {} {}", MessageEnum.APIH_CANNOT_READ_SCHEMA.toString(), ErrorCode.SchemaError.getValue(),
98 "APIH cannot read schema file", e);
100 return "ErrorDetails: " + "Unable to read the schema file";