/*
* Copyright (c) WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
* WSO2 Inc. licenses this file to you 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.
*/
package org.wso2.carbon.identity.entitlement.internal;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.wso2.carbon.identity.core.util.IdentityIOStreamUtils;
import org.wso2.carbon.identity.entitlement.PDPConstants;
import org.xml.sax.SAXException;
import javax.xml.XMLConstants;
import javax.xml.transform.stream.StreamSource;
import javax.xml.validation.Schema;
import javax.xml.validation.SchemaFactory;
import java.io.InputStream;
public class SchemaBuilder implements Runnable {
private static Log log = LogFactory.getLog(SchemaBuilder.class);
private EntitlementConfigHolder configHolder;
public SchemaBuilder(EntitlementConfigHolder configHolder) {
this.configHolder = configHolder;
}
@Override
public void run() {
try {
buildPolicySchema();
log.info("XACML policy schema loaded successfully.");
} catch (Exception e) {
configHolder.getEngineProperties().setProperty(EntitlementExtensionBuilder.PDP_SCHEMA_VALIDATION, "false");
log.warn("Error while loading policy schema. Schema validation will be disabled.");
}
}
/**
* Builds the policy schema map. There are three schemas.
*
* @param configHolder holder EntitlementConfigHolder
* @throws SAXException if fails
*/
public void buildPolicySchema() throws SAXException {
if (!"true".equalsIgnoreCase((String) configHolder.getEngineProperties().get(
EntitlementExtensionBuilder.PDP_SCHEMA_VALIDATION))) {
log.warn("PDP schema validation disabled.");
return;
}
String[] schemaNSs = new String[]{PDPConstants.XACML_1_POLICY_XMLNS,
PDPConstants.XACML_2_POLICY_XMLNS,
PDPConstants.XACML_3_POLICY_XMLNS};
for (String schemaNS : schemaNSs) {
String schemaFile;
if (PDPConstants.XACML_1_POLICY_XMLNS.equals(schemaNS)) {
schemaFile = PDPConstants.XACML_1_POLICY_SCHEMA_FILE;
} else if (PDPConstants.XACML_2_POLICY_XMLNS.equals(schemaNS)) {
schemaFile = PDPConstants.XACML_2_POLICY_SCHEMA_FILE;
} else {
schemaFile = PDPConstants.XACML_3_POLICY_SCHEMA_FILE;
}
InputStream schemaFileStream = EntitlementExtensionBuilder.class.getResourceAsStream("/" + schemaFile);
try{
SchemaFactory schemaFactory = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
Schema schema = schemaFactory.newSchema(new StreamSource(schemaFileStream));
configHolder.getPolicySchemaMap().put(schemaNS, schema);
} finally {
IdentityIOStreamUtils.closeInputStream(schemaFileStream);
}
}
}
}