/*
 * Copyright  1999-2009 The Apache Software Foundation.
 *
 *  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.apache.xml.security.test.utils;

import java.io.IOException;
import java.security.PublicKey;
import java.security.cert.X509Certificate;

import javax.crypto.SecretKey;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;

import junit.framework.TestCase;

import org.apache.xml.security.Init;
import org.apache.xml.security.c14n.CanonicalizationException;
import org.apache.xml.security.c14n.InvalidCanonicalizerException;
import org.apache.xml.security.keys.KeyInfo;
import org.apache.xml.security.keys.keyresolver.KeyResolver;
import org.apache.xml.security.keys.keyresolver.KeyResolverException;
import org.apache.xml.security.keys.keyresolver.KeyResolverSpi;
import org.apache.xml.security.keys.storage.StorageResolver;
import org.apache.xml.security.signature.XMLSignatureInput;
import org.apache.xml.security.transforms.Transform;
import org.apache.xml.security.transforms.TransformSpi;
import org.apache.xml.security.transforms.TransformationException;
import org.apache.xml.security.utils.resolver.ResourceResolver;
import org.apache.xml.security.utils.resolver.ResourceResolverException;
import org.apache.xml.security.utils.resolver.ResourceResolverSpi;
import org.w3c.dom.Attr;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.xml.sax.SAXException;

public class OldApiTest extends TestCase {
	
	public static class OldTransform extends TransformSpi {
		static Transform compare;
		protected XMLSignatureInput enginePerformTransform(
			      XMLSignatureInput input)
			         throws IOException,
			                CanonicalizationException, InvalidCanonicalizerException,
			                TransformationException, ParserConfigurationException,
			                SAXException {
			assertEquals(compare,_transformObject);
				 return null ;
	     }

		protected String engineGetURI() {
			// TODO Auto-generated method stub
			return null;
		};
	};
	public void testOldTransformSpiApi() throws Exception {
		Init.init();
		Document doc=DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();
		Transform.register("old", OldTransform.class.getName());

		Transform a=new Transform(doc,"old",null);
		OldTransform.compare=a;
		a.performTransform(null);
	};
	
	public static class OldResourceResolverSpi extends ResourceResolverSpi {
		Attr uriCompare;
		String baseCompare;
		public boolean engineCanResolve(Attr uri, String BaseURI) {
			if (uri.getValue().indexOf("!!!test=")!=0) {
				return false;
			}
			uriCompare=uri;
			baseCompare=BaseURI;
			return true;
		}

		public XMLSignatureInput engineResolve(Attr uri, String BaseURI) throws ResourceResolverException {
			assertEquals(uriCompare, uri);
			assertEquals(baseCompare,BaseURI);
			return null;
		}
		
	};
	public void testOldResourceResolverSpi() throws Exception {
		Document doc=DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();		
		Attr uri=doc.createAttribute("id");
		uri.setNodeValue("!!!test=1");
		((Element)doc.createElement("test")).setAttributeNode(uri);
		Attr uri1=doc.createAttribute("id");
		uri1.setNodeValue("!!!test=2");
		doc.createElement("test1").setAttributeNode(uri1);
		ResourceResolver.registerAtStart(OldResourceResolverSpi.class.getName());
		ResourceResolver resolver=ResourceResolver.getInstance(uri, "test");
		ResourceResolver resolver1=ResourceResolver.getInstance(uri1, "test1");
		ResourceResolver resolver2=ResourceResolver.getInstance(uri1, "test2");
		
		resolver2.resolve(uri1, "test2");		
		resolver.resolve(uri, "test");
		resolver1.resolve(uri1, "test1");
		
		
	};
	static class PublicKeyMock implements PublicKey {

		   public String getAlgorithm() {
			   // TODO Auto-generated method stub
			   return null;
		   }

		   public byte[] getEncoded() {
			   // TODO Auto-generated method stub
			   return null;
		   }

		   public String getFormat() {
			   // TODO Auto-generated method stub
			   return null;
		   }				   
	   };			
	static public class OldKeyResolverSpi extends KeyResolverSpi {
		static int number=0;
		PublicKey pk=null;
		public OldKeyResolverSpi() {
			number++;
		};
		public boolean engineCanResolve(Element element, String BaseURI,
			                                            StorageResolver storage) {
			   if ("!!!testUri".equals(BaseURI)) 
				   return true;
			   return false;
		}
		   public PublicKey engineResolvePublicKey(
		      Element element, String BaseURI, StorageResolver storage)
		         throws KeyResolverException {
			   if (pk==null)
				   pk=new PublicKeyMock();
			   return pk;
		    };
		   
		   
		    public X509Certificate engineResolveX509Certificate(
		       Element element, String BaseURI, StorageResolver storage)
		         throws KeyResolverException{
		        return null;
		    };

		    public SecretKey engineResolveSecretKey(
		       Element element, String BaseURI, StorageResolver storage)
		          throws KeyResolverException{
		    	return null;
		    }; 
	};
	
	public void testOldKeyResolverSpi() throws Exception{
		KeyResolver.register(OldKeyResolverSpi.class.getName());
		Document doc=DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();				
		Element el=((Element)doc.createElement("test"));
		PublicKey pk=KeyResolver.getPublicKey(el, "!!!testUri", null);
		assertNotNull(pk);
		assertTrue(pk instanceof PublicKeyMock);
		assertEquals(2, OldKeyResolverSpi.number);
		PublicKey pk1=KeyResolver.getPublicKey(el, "!!!testUri", null);
		assertNotSame(pk,pk1);
		assertEquals(3, OldKeyResolverSpi.number);
	}
	static public class OldKeyResolverNoPublicConsSpi extends OldKeyResolverSpi {
		protected OldKeyResolverNoPublicConsSpi() {		
		};
		public OldKeyResolverNoPublicConsSpi(PublicKey pk) {
			this.pk=pk;
		}
	};
	

	public void testOldKeyResolverSpiInKeyInfo() throws Exception{
		Document doc=DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();
		Element el=(Element)doc.createElementNS("http://www.w3.org/2000/09/xmldsig#","KeyInfo");
		el.appendChild((Element)doc.createElementNS("http://www.w3.org/2000/09/xmldsig#","KeyInfo"));
		KeyInfo ki=new KeyInfo(el,"!!!testUri");
		PublicKey pk=new PublicKeyMock();
		ki.registerInternalKeyResolver(new OldKeyResolverNoPublicConsSpi(pk));
		assertNotNull(ki.getPublicKey());
		
	}
}