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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF 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.
*/
import org.bouncycastle.asn1.ASN1ObjectIdentifier;
import org.bouncycastle.asn1.cms.CMSObjectIdentifiers;
import org.bouncycastle.cms.CMSException;
import org.bouncycastle.cms.CMSTypedData;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.apache.pdfbox.io.IOUtils;
/**
* Wraps a InputStream into a CMSProcessable object for bouncy castle. It's a memory saving
* alternative to the {@link org.bouncycastle.cms.CMSProcessableByteArray CMSProcessableByteArray}
* class.
*
* @author Thomas Chojecki
*/
class CMSProcessableInputStream implements CMSTypedData
{
private InputStream in;
private final ASN1ObjectIdentifier contentType;
CMSProcessableInputStream(InputStream is)
{
this(new ASN1ObjectIdentifier(CMSObjectIdentifiers.data.getId()), is);
}
CMSProcessableInputStream(ASN1ObjectIdentifier type, InputStream is)
{
contentType = type;
in = is;
}
@Override
public Object getContent()
{
return in;
}
@Override
public void write(OutputStream out) throws IOException, CMSException
{
// read the content only one time
IOUtils.copy(in, out);
in.close();
}
@Override
public ASN1ObjectIdentifier getContentType()
{
return contentType;
}
}
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