/*************************************************************************
* Copyright 2009-2015 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.
************************************************************************/
package com.eucalyptus.objectstorage.policy;
import static com.eucalyptus.auth.policy.PolicySpec.*;
import java.util.Set;
import com.eucalyptus.auth.AuthException;
import com.eucalyptus.auth.policy.condition.ConditionOp;
import com.eucalyptus.auth.policy.condition.StringConditionOp;
import com.eucalyptus.auth.policy.key.PolicyKey;
import com.eucalyptus.context.Contexts;
import com.eucalyptus.objectstorage.msgs.CopyObjectType;
import com.eucalyptus.util.Exceptions;
import com.google.common.collect.ImmutableSet;
import edu.ucsb.eucalyptus.msgs.BaseMessage;
import net.sf.json.JSONException;
/**
*
*/
@PolicyKey( XAmzCopySourceKey.KEY_NAME )
public class XAmzCopySourceKey implements ObjectStorageKey {
static final String KEY_NAME = "s3:x-amz-copy-source";
private static final Set<String> actions = ImmutableSet.<String>builder( )
.add( qualifiedName( S3PolicySpec.VENDOR_S3, S3PolicySpec.S3_PUTOBJECT ) )
.build( );
@Override
public String value( ) throws AuthException {
return getCopySource( );
}
@Override
public void validateConditionType( final Class<? extends ConditionOp> conditionClass ) throws JSONException {
if ( !StringConditionOp.class.isAssignableFrom( conditionClass ) ) {
throw new JSONException( KEY_NAME + " is not allowed in condition " + conditionClass.getName( ) + ". String conditions are required." );
}
}
@Override
public boolean canApply( final String action ) {
return actions.contains( action );
}
private String getCopySource( ) throws AuthException {
try {
final BaseMessage request = Contexts.lookup( ).getRequest( );
final String copySource;
if ( request instanceof CopyObjectType ) {
final CopyObjectType copyObjectType = (CopyObjectType) request;
String copySourceValue = "/" + copyObjectType.getSourceBucket( ) + "/" + copyObjectType.getSourceObject( );
if ( copyObjectType.getSourceVersionId( ) != null ) {
copySourceValue = copySourceValue + "?versionId=" + copyObjectType.getSourceVersionId( );
}
copySource = copySourceValue;
} else {
throw new AuthException( "Error getting value for s3 metadata directive condition" );
}
return copySource;
} catch ( Exception e ) {
Exceptions.findAndRethrow( e, AuthException.class );
throw new AuthException( "Error getting value for s3 copy source condition", e );
}
}
}