Java tutorial
/************************************************************************* * Copyright 2009-2012 Eucalyptus Systems, Inc. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 3 of the License. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see http://www.gnu.org/licenses/. * * Please contact Eucalyptus Systems, Inc., 6755 Hollister Ave., Goleta * CA 93117, USA or visit http://www.eucalyptus.com/licenses/ if you need * additional information or have any questions. * * This file may incorporate work covered under the following copyright * and permission notice: * * Software License Agreement (BSD License) * * Copyright (c) 2008, Regents of the University of California * All rights reserved. * * Redistribution and use of this software in source and binary forms, * with or without modification, are permitted provided that the * following conditions are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer * in the documentation and/or other materials provided with the * distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. USERS OF THIS SOFTWARE ACKNOWLEDGE * THE POSSIBLE PRESENCE OF OTHER OPEN SOURCE LICENSED MATERIAL, * COPYRIGHTED MATERIAL OR PATENTED MATERIAL IN THIS SOFTWARE, * AND IF ANY SUCH MATERIAL IS DISCOVERED THE PARTY DISCOVERING * IT MAY INFORM DR. RICH WOLSKI AT THE UNIVERSITY OF CALIFORNIA, * SANTA BARBARA WHO WILL THEN ASCERTAIN THE MOST APPROPRIATE REMEDY, * WHICH IN THE REGENTS' DISCRETION MAY INCLUDE, WITHOUT LIMITATION, * REPLACEMENT OF THE CODE SO IDENTIFIED, LICENSING OF THE CODE SO * IDENTIFIED, OR WITHDRAWAL OF THE CODE CAPABILITY TO THE EXTENT * NEEDED TO COMPLY WITH ANY SUCH LICENSES OR RIGHTS. ************************************************************************/ package com.eucalyptus.objectstorage.util; import com.eucalyptus.component.ComponentId; import com.eucalyptus.component.ComponentIds; import com.eucalyptus.component.auth.SystemCredentials; import com.eucalyptus.crypto.Ciphers; import com.eucalyptus.objectstorage.ObjectStorage; import com.eucalyptus.objectstorage.exceptions.ObjectStorageException; import com.eucalyptus.objectstorage.msgs.ObjectStorageErrorMessageType; import com.eucalyptus.util.EucalyptusCloudException; import com.eucalyptus.util.Internets; import edu.ucsb.eucalyptus.msgs.BaseMessage; import edu.ucsb.eucalyptus.msgs.EucalyptusErrorMessageType; import edu.ucsb.eucalyptus.msgs.ExceptionResponseType; import org.apache.tools.ant.util.DateUtils; import org.bouncycastle.util.encoders.Base64; import org.jboss.netty.buffer.ChannelBuffer; import org.jboss.netty.buffer.ChannelBufferIndexFinder; import javax.crypto.Cipher; import java.io.UnsupportedEncodingException; import java.net.URLDecoder; import java.security.PrivateKey; import java.security.PublicKey; import java.util.Date; public class OSGUtil { public static BaseMessage convertErrorMessage(ExceptionResponseType errorMessage) { Throwable ex = errorMessage.getException(); String correlationId = errorMessage.getCorrelationId(); BaseMessage errMsg = null; if ((errMsg = convertException(correlationId, ex)) == null) { errMsg = errorMessage; } return errMsg; } public static BaseMessage convertErrorMessage(EucalyptusErrorMessageType errorMessage) { Throwable ex = errorMessage.getException(); String correlationId = errorMessage.getCorrelationId(); BaseMessage errMsg = null; if ((errMsg = convertException(correlationId, ex)) == null) { errMsg = errorMessage; } return errMsg; } private static BaseMessage convertException(String correlationId, Throwable ex) { BaseMessage errMsg; if (ex instanceof ObjectStorageException) { ObjectStorageException e = (ObjectStorageException) ex; errMsg = new ObjectStorageErrorMessageType(e.getMessage(), e.getCode(), e.getStatus(), e.getResourceType(), e.getResource(), correlationId, Internets.localHostAddress(), e.getLogData()); errMsg.setCorrelationId(correlationId); return errMsg; } else { return null; } } public static String URLdecode(String objectKey) throws UnsupportedEncodingException { return URLDecoder.decode(objectKey, "UTF-8"); } public static String[] getTarget(String operationPath) { operationPath = operationPath.replaceAll("/{2,}", "/"); if (operationPath.startsWith("/")) operationPath = operationPath.substring(1); return operationPath.split("/"); } /** * Returns index where bytesToFind begins in the buffer */ public static class ByteMatcherBeginningIndexFinder implements ChannelBufferIndexFinder { private byte[] toMatch; public ByteMatcherBeginningIndexFinder(byte[] bytesToFind) { this.toMatch = bytesToFind; } @Override public boolean find(ChannelBuffer channelBuffer, int i) { channelBuffer.markReaderIndex(); try { int matchedCount = 0; //Check basic params, like length if (i + this.toMatch.length > channelBuffer.readableBytes()) { return false; } //Match byte for byte for (int j = i; j - i < this.toMatch.length; j++) { if (channelBuffer.getByte(j) != this.toMatch[j - i]) { return false; } matchedCount++; } return matchedCount == toMatch.length; } catch (IndexOutOfBoundsException e) { return false; } finally { channelBuffer.resetReaderIndex(); } } } public static int findFirstMatchInBuffer(ChannelBuffer buffer, int start, byte[] bytesToFind) { return buffer.indexOf(start, buffer.readableBytes(), new ByteMatcherBeginningIndexFinder(bytesToFind)); } public static int findLastMatchInBuffer(ChannelBuffer buffer, int start, byte[] bytesToFind) { return buffer.indexOf(buffer.readableBytes(), start, new ByteMatcherBeginningIndexFinder(bytesToFind)); } //Encrypt data using the cloud public key public static String encryptWithComponentPublicKey(Class<? extends ComponentId> componentClass, String data) throws EucalyptusCloudException { try { PublicKey clcPublicKey = SystemCredentials.lookup(componentClass).getCertificate().getPublicKey(); Cipher cipher = Ciphers.RSA_PKCS1.get(); cipher.init(Cipher.ENCRYPT_MODE, clcPublicKey); return new String(Base64.encode(cipher.doFinal(data.getBytes("UTF-8")))); } catch (Exception e) { throw new EucalyptusCloudException("Unable to encrypt data: " + e.getMessage(), e); } } //Decrypt data encrypted with the Cloud public key public static String decryptWithComponentPrivateKey(Class<? extends ComponentId> componentClass, String data) throws EucalyptusCloudException { PrivateKey clcPrivateKey = SystemCredentials.lookup(componentClass).getPrivateKey(); try { Cipher cipher = Ciphers.RSA_PKCS1.get(); cipher.init(Cipher.DECRYPT_MODE, clcPrivateKey); return new String(cipher.doFinal(Base64.decode(data))); } catch (Exception ex) { throw new EucalyptusCloudException("Unable to decrypt data with cloud private key", ex); } } }