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package org.spongycastle.asn1.test;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.spongycastle.asn1.ASN1Integer;
import org.spongycastle.asn1.ASN1ObjectIdentifier;
import org.spongycastle.asn1.ASN1OctetStringParser;
import org.spongycastle.asn1.ASN1SequenceParser;
import org.spongycastle.asn1.ASN1StreamParser;
import org.spongycastle.asn1.BEROctetStringGenerator;
import org.spongycastle.asn1.BERSequenceGenerator;
import org.spongycastle.asn1.BERTags;
import org.spongycastle.asn1.DERSequenceGenerator;
import org.spongycastle.asn1.cms.CMSObjectIdentifiers;
import org.spongycastle.asn1.cms.CompressedDataParser;
import org.spongycastle.asn1.cms.ContentInfoParser;
public class OctetStringTest
extends TestCase
{
public void testReadingWriting()
throws Exception
{
ByteArrayOutputStream bOut = new ByteArrayOutputStream();
BEROctetStringGenerator octGen = new BEROctetStringGenerator(bOut);
OutputStream out = octGen.getOctetOutputStream();
out.write(new byte[] { 1, 2, 3, 4 });
out.write(new byte[4]);
out.close();
ASN1StreamParser aIn = new ASN1StreamParser(bOut.toByteArray());
ASN1OctetStringParser s = (ASN1OctetStringParser)aIn.readObject();
InputStream in = s.getOctetStream();
int count = 0;
while (in.read() >= 0)
{
count++;
}
assertEquals(8, count);
}
public void testReadingWritingZeroInLength()
throws Exception
{
ByteArrayOutputStream bOut = new ByteArrayOutputStream();
BEROctetStringGenerator octGen = new BEROctetStringGenerator(bOut);
OutputStream out = octGen.getOctetOutputStream();
out.write(new byte[] { 1, 2, 3, 4 });
out.write(new byte[512]); // forces a zero to appear in length
out.close();
ASN1StreamParser aIn = new ASN1StreamParser(bOut.toByteArray());
ASN1OctetStringParser s = (ASN1OctetStringParser)aIn.readObject();
InputStream in = s.getOctetStream();
int count = 0;
while (in.read() >= 0)
{
count++;
}
assertEquals(516, count);
}
public void testReadingWritingNested()
throws Exception
{
ByteArrayOutputStream bOut = new ByteArrayOutputStream();
BERSequenceGenerator sGen = new BERSequenceGenerator(bOut);
BEROctetStringGenerator octGen = new BEROctetStringGenerator(sGen.getRawOutputStream());
OutputStream out = octGen.getOctetOutputStream();
BERSequenceGenerator inSGen = new BERSequenceGenerator(out);
BEROctetStringGenerator inOctGen = new BEROctetStringGenerator(inSGen.getRawOutputStream());
OutputStream inOut = inOctGen.getOctetOutputStream();
inOut.write(new byte[] { 1, 2, 3, 4 });
inOut.write(new byte[10]);
inOut.close();
inSGen.close();
out.close();
sGen.close();
ASN1StreamParser aIn = new ASN1StreamParser(bOut.toByteArray());
ASN1SequenceParser sq = (ASN1SequenceParser)aIn.readObject();
ASN1OctetStringParser s = (ASN1OctetStringParser)sq.readObject();
ASN1StreamParser aIn2 = new ASN1StreamParser(s.getOctetStream());
ASN1SequenceParser sq2 = (ASN1SequenceParser)aIn2.readObject();
ASN1OctetStringParser inS = (ASN1OctetStringParser)sq2.readObject();
InputStream in = inS.getOctetStream();
int count = 0;
while (in.read() >= 0)
{
count++;
}
assertEquals(14, count);
}
public void testNestedStructure()
throws Exception
{
ByteArrayOutputStream bOut = new ByteArrayOutputStream();
BERSequenceGenerator sGen = new BERSequenceGenerator(bOut);
sGen.addObject(new ASN1ObjectIdentifier(CMSObjectIdentifiers.compressedData.getId()));
BERSequenceGenerator cGen = new BERSequenceGenerator(sGen.getRawOutputStream(), 0, true);
cGen.addObject(new ASN1Integer(0));
//
// AlgorithmIdentifier
//
DERSequenceGenerator algGen = new DERSequenceGenerator(cGen.getRawOutputStream());
algGen.addObject(new ASN1ObjectIdentifier("1.2"));
algGen.close();
//
// Encapsulated ContentInfo
//
BERSequenceGenerator eiGen = new BERSequenceGenerator(cGen.getRawOutputStream());
eiGen.addObject(new ASN1ObjectIdentifier("1.1"));
BEROctetStringGenerator octGen = new BEROctetStringGenerator(eiGen.getRawOutputStream(), 0, true);
//
// output containing zeroes
//
OutputStream out = octGen.getOctetOutputStream();
out.write(new byte[] { 1, 2, 3, 4 });
out.write(new byte[4]);
out.write(new byte[20]);
out.close();
eiGen.close();
cGen.close();
sGen.close();
//
// reading back
//
ASN1StreamParser aIn = new ASN1StreamParser(bOut.toByteArray());
ContentInfoParser cp = new ContentInfoParser((ASN1SequenceParser)aIn.readObject());
CompressedDataParser comData = new CompressedDataParser((ASN1SequenceParser)cp.getContent(BERTags.SEQUENCE));
ContentInfoParser content = comData.getEncapContentInfo();
ASN1OctetStringParser bytes = (ASN1OctetStringParser)content.getContent(BERTags.OCTET_STRING);
InputStream in = bytes.getOctetStream();
int count = 0;
while (in.read() >= 0)
{
count++;
}
assertEquals(28, count);
}
public static Test suite()
{
return new TestSuite(OctetStringTest.class);
}
}
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