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using System;
using System.Collections;
using System.IO;
using Org.BouncyCastle.Asn1;
using Org.BouncyCastle.Asn1.Cms;
using Org.BouncyCastle.Asn1.X509;
using Org.BouncyCastle.Security.Certificates;
using Org.BouncyCastle.Utilities;
using Org.BouncyCastle.Utilities.IO;
using Org.BouncyCastle.X509;
using Org.BouncyCastle.X509.Store;
namespace Org.BouncyCastle.Cms
{
internal class CmsUtilities
{
// TODO Is there a .NET equivalent to this?
// private static readonly Runtime RUNTIME = Runtime.getRuntime();
internal static int MaximumMemory
{
get
{
// TODO Is there a .NET equivalent to this?
long maxMem = int.MaxValue;//RUNTIME.maxMemory();
if (maxMem > int.MaxValue)
{
return int.MaxValue;
}
return (int)maxMem;
}
}
internal static ContentInfo ReadContentInfo(
byte[] input)
{
// enforce limit checking as from a byte array
return ReadContentInfo(new Asn1InputStream(input));
}
internal static ContentInfo ReadContentInfo(
Stream input)
{
// enforce some limit checking
return ReadContentInfo(new Asn1InputStream(input, MaximumMemory));
}
private static ContentInfo ReadContentInfo(
Asn1InputStream aIn)
{
try
{
return ContentInfo.GetInstance(aIn.ReadObject());
}
catch (IOException e)
{
throw new CmsException("IOException reading content.", e);
}
catch (InvalidCastException e)
{
throw new CmsException("Malformed content.", e);
}
catch (ArgumentException e)
{
throw new CmsException("Malformed content.", e);
}
}
public static byte[] StreamToByteArray(
Stream inStream)
{
return Streams.ReadAll(inStream);
}
public static byte[] StreamToByteArray(
Stream inStream,
int limit)
{
return Streams.ReadAllLimited(inStream, limit);
}
public static IList GetCertificatesFromStore(
IX509Store certStore)
{
try
{
IList certs = Platform.CreateArrayList();
if (certStore != null)
{
foreach (X509Certificate c in certStore.GetMatches(null))
{
certs.Add(
X509CertificateStructure.GetInstance(
Asn1Object.FromByteArray(c.GetEncoded())));
}
}
return certs;
}
catch (CertificateEncodingException e)
{
throw new CmsException("error encoding certs", e);
}
catch (Exception e)
{
throw new CmsException("error processing certs", e);
}
}
public static IList GetCrlsFromStore(
IX509Store crlStore)
{
try
{
IList crls = Platform.CreateArrayList();
if (crlStore != null)
{
foreach (X509Crl c in crlStore.GetMatches(null))
{
crls.Add(
CertificateList.GetInstance(
Asn1Object.FromByteArray(c.GetEncoded())));
}
}
return crls;
}
catch (CrlException e)
{
throw new CmsException("error encoding crls", e);
}
catch (Exception e)
{
throw new CmsException("error processing crls", e);
}
}
public static Asn1Set CreateBerSetFromList(
IList berObjects)
{
Asn1EncodableVector v = new Asn1EncodableVector();
foreach (Asn1Encodable ae in berObjects)
{
v.Add(ae);
}
return new BerSet(v);
}
public static Asn1Set CreateDerSetFromList(
IList derObjects)
{
Asn1EncodableVector v = new Asn1EncodableVector();
foreach (Asn1Encodable ae in derObjects)
{
v.Add(ae);
}
return new DerSet(v);
}
internal static Stream CreateBerOctetOutputStream(Stream s, int tagNo, bool isExplicit, int bufferSize)
{
BerOctetStringGenerator octGen = new BerOctetStringGenerator(s, tagNo, isExplicit);
return octGen.GetOctetOutputStream(bufferSize);
}
internal static TbsCertificateStructure GetTbsCertificateStructure(X509Certificate cert)
{
return TbsCertificateStructure.GetInstance(Asn1Object.FromByteArray(cert.GetTbsCertificate()));
}
internal static IssuerAndSerialNumber GetIssuerAndSerialNumber(X509Certificate cert)
{
TbsCertificateStructure tbsCert = GetTbsCertificateStructure(cert);
return new IssuerAndSerialNumber(tbsCert.Issuer, tbsCert.SerialNumber.Value);
}
}
}
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