KeycloakSamlAdapterParser.java
/*
* Copyright 2018 Red Hat, Inc. and/or its affiliates
* and other contributors as indicated by the @author tags.
*
* 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.
*/
package org.keycloak.adapters.saml.config.parsers;
import org.keycloak.saml.common.ErrorCodes;
import org.keycloak.saml.common.exceptions.ParsingException;
import org.keycloak.saml.common.parsers.AbstractParser;
import org.keycloak.saml.common.parsers.StaxParser;
import org.keycloak.saml.common.util.StaxParserUtil;
import java.util.HashMap;
import java.util.Map;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLEventReader;
import javax.xml.stream.events.StartElement;
import javax.xml.stream.events.XMLEvent;
/**
*
* @author hmlnarik
*/
public class KeycloakSamlAdapterParser extends AbstractParser {
private interface ParserFactory {
public StaxParser create();
}
private static final Map<QName, ParserFactory> PARSERS = new HashMap<QName, ParserFactory>();
// No-namespace variant
private static final QName ALTERNATE_KEYCLOAK_SAML_ADAPTER_V1 = new QName(KeycloakSamlAdapterV1QNames.KEYCLOAK_SAML_ADAPTER.getQName().getLocalPart());
static {
PARSERS.put(KeycloakSamlAdapterV1QNames.KEYCLOAK_SAML_ADAPTER.getQName(), new ParserFactory() { @Override public StaxParser create() { return KeycloakSamlAdapterV1Parser.getInstance(); }});
PARSERS.put(ALTERNATE_KEYCLOAK_SAML_ADAPTER_V1, new ParserFactory() { @Override public StaxParser create() { return KeycloakSamlAdapterV1Parser.getInstance(); }});
}
private static final KeycloakSamlAdapterParser INSTANCE = new KeycloakSamlAdapterParser();
public static KeycloakSamlAdapterParser getInstance() {
return INSTANCE;
}
protected KeycloakSamlAdapterParser() {
}
/**
* @see {@link org.keycloak.saml.common.parsers.ParserNamespaceSupport#parse(XMLEventReader)}
*/
@Override
public Object parse(XMLEventReader xmlEventReader) throws ParsingException {
while (xmlEventReader.hasNext()) {
XMLEvent xmlEvent = StaxParserUtil.peek(xmlEventReader);
if (xmlEvent instanceof StartElement) {
StartElement startElement = (StartElement) xmlEvent;
final QName name = startElement.getName();
ParserFactory pf = PARSERS.get(name);
if (pf == null) {
throw logger.parserException(new RuntimeException(ErrorCodes.UNKNOWN_START_ELEMENT + name + "::location="
+ startElement.getLocation()));
}
return pf.create().parse(xmlEventReader);
}
StaxParserUtil.getNextEvent(xmlEventReader);
}
throw new RuntimeException(ErrorCodes.FAILED_PARSING + "SAML Parsing has failed");
}
}