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using System;
using System.Collections.Generic;
using System.IO;
using Org.BouncyCastle.Asn1;
using Org.BouncyCastle.Asn1.Cms;
using Org.BouncyCastle.Asn1.Ocsp;
using Org.BouncyCastle.Asn1.X509;
using Org.BouncyCastle.Utilities.Collections;
using Org.BouncyCastle.Utilities.IO;
using Org.BouncyCastle.X509;
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);
}
}
internal static byte[] StreamToByteArray(Stream inStream)
{
return Streams.ReadAll(inStream);
}
internal static byte[] StreamToByteArray(Stream inStream, int limit)
{
return Streams.ReadAllLimited(inStream, limit);
}
internal static List<Asn1TaggedObject> GetAttributeCertificatesFromStore(
IStore<X509V2AttributeCertificate> attrCertStore)
{
var result = new List<Asn1TaggedObject>();
if (attrCertStore != null)
{
foreach (var attrCert in attrCertStore.EnumerateMatches(null))
{
result.Add(new DerTaggedObject(false, 2, attrCert.AttributeCertificate));
}
}
return result;
}
internal static List<X509CertificateStructure> GetCertificatesFromStore(IStore<X509Certificate> certStore)
{
var result = new List<X509CertificateStructure>();
if (certStore != null)
{
foreach (var cert in certStore.EnumerateMatches(null))
{
result.Add(cert.CertificateStructure);
}
}
return result;
}
internal static List<CertificateList> GetCrlsFromStore(IStore<X509Crl> crlStore)
{
var result = new List<CertificateList>();
if (crlStore != null)
{
foreach (var crl in crlStore.EnumerateMatches(null))
{
result.Add(crl.CertificateList);
}
}
return result;
}
internal static List<Asn1TaggedObject> GetOtherRevocationInfosFromStore(
IStore<OtherRevocationInfoFormat> otherRevocationInfoStore)
{
var result = new List<Asn1TaggedObject>();
if (otherRevocationInfoStore != null)
{
foreach (var otherRevocationInfo in otherRevocationInfoStore.EnumerateMatches(null))
{
ValidateOtherRevocationInfo(otherRevocationInfo);
result.Add(new DerTaggedObject(false, 1, otherRevocationInfo));
}
}
return result;
}
internal static List<DerTaggedObject> GetOtherRevocationInfosFromStore(IStore<Asn1Encodable> otherRevInfoStore,
DerObjectIdentifier otherRevInfoFormat)
{
var result = new List<DerTaggedObject>();
if (otherRevInfoStore != null && otherRevInfoFormat != null)
{
foreach (var otherRevInfo in otherRevInfoStore.EnumerateMatches(null))
{
var otherRevocationInfo = new OtherRevocationInfoFormat(otherRevInfoFormat, otherRevInfo);
ValidateOtherRevocationInfo(otherRevocationInfo);
result.Add(new DerTaggedObject(false, 1, otherRevocationInfo));
}
}
return result;
}
internal static Asn1Set CreateBerSetFromList(IEnumerable<Asn1Encodable> elements)
{
Asn1EncodableVector v = new Asn1EncodableVector();
foreach (Asn1Encodable element in elements)
{
v.Add(element);
}
return new BerSet(v);
}
internal static Asn1Set CreateDerSetFromList(IEnumerable<Asn1Encodable> elements)
{
Asn1EncodableVector v = new Asn1EncodableVector();
foreach (Asn1Encodable element in elements)
{
v.Add(element);
}
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);
}
internal static void ValidateOtherRevocationInfo(OtherRevocationInfoFormat otherRevocationInfo)
{
if (CmsObjectIdentifiers.id_ri_ocsp_response.Equals(otherRevocationInfo.InfoFormat))
{
OcspResponse ocspResponse = OcspResponse.GetInstance(otherRevocationInfo.Info);
if (OcspResponseStatus.Successful != ocspResponse.ResponseStatus.IntValueExact)
throw new ArgumentException("cannot add unsuccessful OCSP response to CMS SignedData");
}
}
}
}
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