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/*
* Licensed to the University Corporation for Advanced Internet Development,
* Inc. (UCAID) under one or more contributor license agreements. See the
* NOTICE file distributed with this work for additional information regarding
* copyright ownership. The UCAID 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.opensaml.saml.saml2.binding.artifact;
import java.util.Arrays;
/**
* SAML 2 Type 0x004 Artifact. SAML 2, type 4, artifacts contains a 2 byte type code with a value of 4 follwed by a 2
* byte endpoint index followed by a 20 byte source ID followed by a 20 byte message handle.
*/
public class SAML2ArtifactType0004 extends AbstractSAML2Artifact {
/** SAML 2 artifact type code (0x0004). */
public static final byte[] TYPE_CODE = { 0, 4 };
/** 20 byte artifact source ID. */
private byte[] sourceID;
/** 20 byte message handle. */
private byte[] messageHandle;
/** Constructor. */
public SAML2ArtifactType0004() {
super(TYPE_CODE);
}
/**
* Constructor.
*
* @param endpointIndex 2 byte endpoint index of the artifact
* @param source 20 byte source ID of the artifact
* @param handle 20 byte message handle of the artifact
*
* @throws IllegalArgumentException thrown if the endpoint index, source ID, or message handle arrays are not of the
* right size
*/
public SAML2ArtifactType0004(byte[] endpointIndex, byte[] source, byte[] handle) {
super(TYPE_CODE, endpointIndex);
setSourceID(source);
setMessageHandle(handle);
}
/**
* Constructs a SAML 2 artifact from its byte array representation.
*
* @param artifact the byte array representing the artifact
*
* @return the type 0x0004 artifact created from the byte array
*
* @throws IllegalArgumentException thrown if the artifact is not the right type or lenght (44 bytes)
*/
public static SAML2ArtifactType0004 parseArtifact(byte[] artifact) {
if (artifact.length != 44) {
throw new IllegalArgumentException("Artifact length must be 44 bytes it was " + artifact.length + "bytes");
}
byte[] typeCode = { artifact[0], artifact[1] };
if (!Arrays.equals(typeCode, TYPE_CODE)) {
throw new IllegalArgumentException("Illegal artifact type code");
}
byte[] endpointIndex = { artifact[2], artifact[3] };
byte[] sourceID = new byte[20];
System.arraycopy(artifact, 4, sourceID, 0, 20);
byte[] messageHandle = new byte[20];
System.arraycopy(artifact, 24, messageHandle, 0, 20);
return new SAML2ArtifactType0004(endpointIndex, sourceID, messageHandle);
}
/**
* Gets the 20 byte source ID of the artifact.
*
* @return the source ID of the artifact
*/
public byte[] getSourceID() {
return sourceID;
}
/**
* Sets the 20 byte source ID of the artifact.
*
* @param newSourceID 20 byte source ID of the artifact
*
* @throws IllegalArgumentException thrown if the given source ID is not 20 bytes
*/
public void setSourceID(byte[] newSourceID) {
if (newSourceID.length != 20) {
throw new IllegalArgumentException("Artifact source ID must be 20 bytes long");
}
sourceID = newSourceID;
}
/**
* Gets the 20 byte message handle of the artifact.
*
* @return 20 byte message handle of the artifact
*/
public byte[] getMessageHandle() {
return messageHandle;
}
/**
* Sets the 20 byte message handle of the artifact.
*
* @param handle 20 byte message handle of the artifact
*/
public void setMessageHandle(byte[] handle) {
if (handle.length != 20) {
throw new IllegalArgumentException("Artifact message handle must be 20 bytes long");
}
messageHandle = handle;
}
/** {@inheritDoc} */
public byte[] getRemainingArtifact() {
byte[] remainingArtifact = new byte[40];
System.arraycopy(getSourceID(), 0, remainingArtifact, 0, 20);
System.arraycopy(getMessageHandle(), 0, remainingArtifact, 20, 20);
return remainingArtifact;
}
}