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/*******************************************************************************
* Copyright (c) 2007, 2018 compeople AG and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* compeople AG (Stefan Liebig) - initial API and implementation
* IBM Corporation - ongoing development
*******************************************************************************/
package org.eclipse.equinox.internal.p2.artifact.processors.md5;
import java.io.IOException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.equinox.internal.p2.artifact.repository.Activator;
import org.eclipse.equinox.internal.p2.repository.helpers.ChecksumHelper;
import org.eclipse.equinox.internal.provisional.p2.artifact.repository.processing.ProcessingStep;
import org.eclipse.equinox.p2.core.IProvisioningAgent;
import org.eclipse.equinox.p2.core.ProvisionException;
import org.eclipse.equinox.p2.repository.artifact.IArtifactDescriptor;
import org.eclipse.equinox.p2.repository.artifact.IProcessingStepDescriptor;
import org.eclipse.osgi.util.NLS;
@Deprecated
public class MD5Verifier extends ProcessingStep {
protected String expectedMD5;
private MessageDigest md5;
public MD5Verifier() {
super();
}
public MD5Verifier(String expected) {
super();
this.expectedMD5 = expected;
basicInitialize(null);
}
//This handle the case where the MD5 verification is initiated by a processing step
@Override
public void initialize(IProvisioningAgent agent, IProcessingStepDescriptor descriptor, IArtifactDescriptor context) {
super.initialize(agent, descriptor, context);
String data = descriptor.getData();
if (IArtifactDescriptor.DOWNLOAD_MD5.equals(data))
expectedMD5 = context.getProperty(IArtifactDescriptor.DOWNLOAD_MD5);
else if (IArtifactDescriptor.ARTIFACT_MD5.equals(data))
expectedMD5 = context.getProperty(IArtifactDescriptor.ARTIFACT_MD5);
else
expectedMD5 = data;
basicInitialize(descriptor);
}
private void basicInitialize(IProcessingStepDescriptor descriptor) {
int code = (descriptor == null) ? IStatus.ERROR : descriptor.isRequired() ? IStatus.ERROR : IStatus.INFO;
if (expectedMD5 == null || expectedMD5.length() != 32)
setStatus(new Status(code, Activator.ID, NLS.bind(Messages.Error_invalid_hash, expectedMD5)));
try {
md5 = MessageDigest.getInstance("MD5"); //$NON-NLS-1$
} catch (NoSuchAlgorithmException e) {
setStatus(new Status(code, Activator.ID, Messages.Error_MD5_unavailable, e));
}
}
@Override
public void write(int b) throws IOException {
md5.update((byte) b);
getDestination().write(b);
}
@Override
public void close() throws IOException {
byte[] digest = md5.digest();
String buf = ChecksumHelper.toHexString(digest);
// if the hashes don't line up set the status to error.
if (!buf.equals(expectedMD5))
setStatus(new Status(IStatus.ERROR, Activator.ID, ProvisionException.ARTIFACT_MD5_NOT_MATCH, NLS.bind(Messages.Error_unexpected_hash, expectedMD5, buf), null));
super.close();
}
}
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