| /******************************************************************************* |
| * Copyright (c) 2008 IBM Corporation 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: IBM Corporation - initial API and implementation |
| ******************************************************************************/ |
| package org.eclipse.equinox.internal.provisional.p2.artifact.repository.processing; |
| |
| import java.io.IOException; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.core.runtime.Status; |
| import org.eclipse.equinox.internal.p2.artifact.repository.Activator; |
| |
| public class ZipVerifierStep extends ProcessingStep { |
| static final int[] ZIP_HEADER = new int[] {0x50, 0x4b, 0x03, 0x04}; |
| |
| private int valid = 0; //-1 indicates that it is not a zip, >3 indicates that we are done the verification |
| |
| public void write(int b) throws IOException { |
| getDestination().write(b); |
| if (valid > 3) |
| return; |
| if (valid == -1) { |
| return; |
| } |
| if (b != ZIP_HEADER[valid++]) { |
| valid = -1; |
| setStatus(new Status(IStatus.ERROR, Activator.ID, Messages.ZipVerifierStep_invalid_archive)); |
| return; |
| } |
| } |
| |
| public void close() throws IOException { |
| if (valid > 3) { |
| setStatus(Status.OK_STATUS); |
| } else { |
| setStatus(new Status(IStatus.ERROR, Activator.ID, Messages.ZipVerifierStep_invalid_archive)); |
| } |
| super.close(); |
| } |
| } |