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using System;
using System.IO;
using NUnit.Framework;
using Org.BouncyCastle.Asn1.Cms;
namespace Org.BouncyCastle.Asn1.Tests
{
[TestFixture]
public class OctetStringTest
{
[Test]
public void TestReadingWriting()
{
MemoryStream bOut = new MemoryStream();
BerOctetStringGenerator octGen = new BerOctetStringGenerator(bOut);
Stream outStream = octGen.GetOctetOutputStream();
outStream.Write(new byte[] { 1, 2, 3, 4 }, 0, 4);
outStream.Write(new byte[4], 0, 4);
outStream.Close();
Asn1StreamParser aIn = new Asn1StreamParser(bOut.ToArray());
BerOctetStringParser s = (BerOctetStringParser)aIn.ReadObject();
Stream inStream = s.GetOctetStream();
int count = 0;
while (inStream.ReadByte() >= 0)
{
count++;
}
Assert.AreEqual(8, count);
}
[Test]
public void TestReadingWritingZeroInLength()
{
MemoryStream bOut = new MemoryStream();
BerOctetStringGenerator octGen = new BerOctetStringGenerator(bOut);
Stream outStream = octGen.GetOctetOutputStream();
outStream.Write(new byte[] { 1, 2, 3, 4 }, 0, 4);
outStream.Write(new byte[512], 0, 512); // forces a zero to appear in length
outStream.Close();
Asn1StreamParser aIn = new Asn1StreamParser(bOut.ToArray());
BerOctetStringParser s = (BerOctetStringParser)aIn.ReadObject();
Stream inStream = s.GetOctetStream();
int count = 0;
while (inStream.ReadByte() >= 0)
{
count++;
}
Assert.AreEqual(516, count);
}
[Test]
public void TestReadingWritingNested()
{
MemoryStream bOut = new MemoryStream();
BerSequenceGenerator sGen = new BerSequenceGenerator(bOut);
BerOctetStringGenerator octGen = new BerOctetStringGenerator(sGen.GetRawOutputStream());
Stream outStream = octGen.GetOctetOutputStream();
BerSequenceGenerator inSGen = new BerSequenceGenerator(outStream);
BerOctetStringGenerator inOctGen = new BerOctetStringGenerator(inSGen.GetRawOutputStream());
Stream inOut = inOctGen.GetOctetOutputStream();
inOut.Write(new byte[] { 1, 2, 3, 4 }, 0, 4);
inOut.Write(new byte[10], 0, 10);
inOut.Close();
inSGen.Close();
outStream.Close();
sGen.Close();
Asn1StreamParser aIn = new Asn1StreamParser(bOut.ToArray());
BerSequenceParser sq = (BerSequenceParser)aIn.ReadObject();
BerOctetStringParser s = (BerOctetStringParser)sq.ReadObject();
Asn1StreamParser aIn2 = new Asn1StreamParser(s.GetOctetStream());
BerSequenceParser sq2 = (BerSequenceParser)aIn2.ReadObject();
BerOctetStringParser inS = (BerOctetStringParser)sq2.ReadObject();
Stream inStream = inS.GetOctetStream();
int count = 0;
while (inStream.ReadByte() >= 0)
{
count++;
}
Assert.AreEqual(14, count);
}
[Test]
public void TestNestedStructure()
{
MemoryStream bOut = new MemoryStream();
BerSequenceGenerator sGen = new BerSequenceGenerator(bOut);
sGen.AddObject(new DerObjectIdentifier(CmsObjectIdentifiers.CompressedData.Id));
BerSequenceGenerator cGen = new BerSequenceGenerator(sGen.GetRawOutputStream(), 0, true);
cGen.AddObject(new DerInteger(0));
//
// AlgorithmIdentifier
//
DerSequenceGenerator algGen = new DerSequenceGenerator(cGen.GetRawOutputStream());
algGen.AddObject(new DerObjectIdentifier("1.2"));
algGen.Close();
//
// Encapsulated ContentInfo
//
BerSequenceGenerator eiGen = new BerSequenceGenerator(cGen.GetRawOutputStream());
eiGen.AddObject(new DerObjectIdentifier("1.1"));
BerOctetStringGenerator octGen = new BerOctetStringGenerator(eiGen.GetRawOutputStream(), 0, true);
//
// output containing zeroes
//
Stream outStream = octGen.GetOctetOutputStream();
outStream.Write(new byte[] { 1, 2, 3, 4 }, 0, 4);
outStream.Write(new byte[4], 0, 4);
outStream.Write(new byte[20], 0, 20);
outStream.Close();
eiGen.Close();
cGen.Close();
sGen.Close();
//
// reading back
//
Asn1StreamParser aIn = new Asn1StreamParser(bOut.ToArray());
ContentInfoParser cp = new ContentInfoParser((Asn1SequenceParser)aIn.ReadObject());
CompressedDataParser comData = new CompressedDataParser((Asn1SequenceParser)cp.GetContent(Asn1Tags.Sequence));
ContentInfoParser content = comData.GetEncapContentInfo();
Asn1OctetStringParser bytes = (Asn1OctetStringParser)content.GetContent(Asn1Tags.OctetString);
Stream inStream = bytes.GetOctetStream();
int count = 0;
while (inStream.ReadByte() >= 0)
{
count++;
}
Assert.AreEqual(28, count);
}
}
}
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