/// <summary>
/// Gets a list of URLs from the specified certificate.
/// </summary>
/// <param name="cert">The certificate to find the URLs in.</param>
/// <returns>A list of CRL URLs in the certificate</returns>
public List <Uri> getCrlURLs(X509Certificate2 cert)
{
List <Uri> urls = new List <Uri>();
foreach (System.Security.Cryptography.X509Certificates.X509Extension extension in cert.Extensions)
{
if (extension.Oid.Value == X509Extensions.CrlDistributionPoints.Id)
{
// Retrieves the raw ASN1 data of the CRL Dist Points X509 extension, and wraps it in a container class
CrlDistPoint crldp = CrlDistPoint.GetInstance(Asn1Object.FromByteArray(extension.RawData));
DistributionPoint[] distPoints = crldp.GetDistributionPoints();
foreach (DistributionPoint dp in crldp.GetDistributionPoints())
{
// Only use the "General name" data in the distribution point entry.
GeneralNames gns = (GeneralNames)dp.DistributionPointName.Name;
foreach (GeneralName name in gns.GetNames())
{
// Only retrieve URLs
if (name.TagNo == GeneralName.UniformResourceIdentifier)
{
DerStringBase s = (DerStringBase)name.Name;
urls.Add(new Uri(s.GetString()));
}
}
}
// There is only one CRL list so faster to break.
break;
}
}
return(urls);
}
private void AddAsn1Object(string name, DataKey root, Asn1Object obj, int level, Logger logger)
{
Asn1Sequence seq = obj as Asn1Sequence;
Asn1Set set = obj as Asn1Set;
Asn1TaggedObject tag = obj as Asn1TaggedObject;
string currName = name ?? obj.GetType().Name;
System.Diagnostics.Trace.WriteLine(String.Format("{0} {1}", currName, obj.GetType()));
if (seq != null)
{
if (!Config.IgnoreSequences)
{
DataKey key = new Asn1SequenceKey(currName, Config.NoVerify);
foreach (Asn1Object o in seq)
{
AddAsn1Object(null, key, o, level + 1, logger);
}
root.AddSubNode(key);
}
else
{
root.AddValue(currName, obj.GetDerEncoded());
}
}
else if (set != null)
{
if (!Config.IgnoreSets)
{
DataKey key = new Asn1SetKey(currName, Config.NoVerify);
foreach (Asn1Object o in set)
{
AddAsn1Object(null, key, o, level + 1, logger);
}
root.AddSubNode(key);
}
else
{
root.AddValue(currName, obj.GetDerEncoded());
}
}
else if (tag != null)
{
if (!Config.IgnoreTaggedObjects)
{
DataKey key = new Asn1TaggedObjectKey(currName, tag.TagNo, Config.NoVerify);
root.AddSubNode(key);
Asn1Object o = tag.GetObject();
DerOctetString oct = o as DerOctetString;
AddAsn1Object("Object", key, tag.GetObject(), level + 1, logger);
//if (oct != null)
//{
// Asn1InputStream input = new Asn1InputStream(oct.GetOctetStream());
// try
// {
// Asn1Object next = input.ReadObject();
// if (next == null)
// {
// AddAsn1Object("Object", key, o, logger);
// }
// else
// {
// Asn1OctetStringObject newRoot = new Asn1OctetStringObject("Object");
// while (next != null)
// {
// AddAsn1Object(next.GetType().Name, newRoot, next, logger);
// next = input.ReadObject();
// }
// key.AddSubNode(newRoot);
// }
// }
// catch (IOException)
// {
// AddAsn1Object("Object", key, o, logger);
// }
//}
//else
//{
// AddAsn1Object("Object", key, tag.GetObject(), logger);
//}
}
else
{
root.AddValue(currName, obj.GetDerEncoded());
}
}
else
{
if (!Config.NoDecode)
{
DerStringBase str = obj as DerStringBase;
DerObjectIdentifier oid = obj as DerObjectIdentifier;
DerInteger i = obj as DerInteger;
DerOctetString oct = obj as DerOctetString;
DerBitString bits = obj as DerBitString;
DerBoolean boo = obj as DerBoolean;
DerNull n = obj as DerNull;
DerUtcTime time = obj as DerUtcTime;
DerGeneralizedTime gt = obj as DerGeneralizedTime;
DerApplicationSpecific app = obj as DerApplicationSpecific;
if (oct != null)
{
root.AddValue(new Asn1OctetStringValue(currName, oct.GetOctets()));
}
else if (bits != null)
{
root.AddSubNode(new Asn1BitStringKey(currName, bits.PadBits, bits.GetBytes()));
}
else if (str != null)
{
Type stringType = typeof(Asn1StringValue <>).MakeGenericType(str.GetType());
root.AddValue((DataValue)Activator.CreateInstance(stringType, currName, str.GetString()));
}
else if (oid != null)
{
root.AddValue(new Asn1ObjectIdentifierValue(currName, oid.Id));
}
else if (i != null)
{
root.AddValue(new Asn1IntegerValue(currName, i.Value.ToByteArray()));
}
else if (boo != null)
{
root.AddValue(new Asn1BooleanValue(currName, boo.IsTrue));
}
else if (n != null)
{
root.AddValue(new Asn1NullValue(currName));
}
else if (time != null)
{
root.AddValue(new Asn1DateTimeValue(currName, time.ToDateTime()));
}
else if (gt != null)
{
root.AddValue(new Asn1GeneralizedTimeValue(currName, gt.ToDateTime()));
}
else if (app != null)
{
root.AddSubNode(new Asn1ApplicationSpecificValue(currName, app.ApplicationTag, app.GetContents()));
}
else
{
logger.LogError("Cannot convert type {0} to a class", obj.GetType().Name);
root.AddValue(currName, obj.GetDerEncoded());
}
}
else
{
root.AddValue(currName, obj.GetDerEncoded());
}
}
}
public string GetString()
{
return(str.GetString());
}