/**
* create a sequence containing a vector of objects.
*/
public DerSequence(
Asn1EncodableVector v)
: base(v.Count)
{
foreach (Asn1Encodable ae in v)
{
AddObject(ae);
}
}
public static Asn1EncodableVector FromEnumerable(
IEnumerable e)
{
Asn1EncodableVector v = new Asn1EncodableVector();
foreach (Asn1Encodable obj in e)
{
v.Add(obj);
}
return v;
}
/**
* Return an ASN1 set from a tagged object. There is a special
* case here, if an object appears to have been explicitly tagged on
* reading but we were expecting it to be implicitly tagged in the
* normal course of events it indicates that we lost the surrounding
* set - so we need to add it back (this will happen if the tagged
* object is a sequence that contains other sequences). If you are
* dealing with implicitly tagged sets you really <b>should</b>
* be using this method.
*
* @param obj the tagged object.
* @param explicitly true if the object is meant to be explicitly tagged
* false otherwise.
* @exception ArgumentException if the tagged object cannot
* be converted.
*/
public static Asn1Set GetInstance(
Asn1TaggedObject obj,
bool explicitly)
{
Asn1Object inner = obj.GetObject();
if (explicitly)
{
if (!obj.IsExplicit())
throw new ArgumentException("object implicit - explicit expected.");
return (Asn1Set) inner;
}
//
// constructed object which appears to be explicitly tagged
// and it's really implicit means we have to add the
// surrounding sequence.
//
if (obj.IsExplicit())
{
return new DerSet(inner);
}
if (inner is Asn1Set)
{
return (Asn1Set) inner;
}
//
// in this case the parser returns a sequence, convert it
// into a set.
//
if (inner is Asn1Sequence)
{
Asn1EncodableVector v = new Asn1EncodableVector();
Asn1Sequence s = (Asn1Sequence) inner;
foreach (Asn1Encodable ae in s)
{
v.Add(ae);
}
// TODO Should be able to construct set directly from sequence?
return new DerSet(v, false);
}
throw new ArgumentException("Unknown object in GetInstance: " + obj.GetType().FullName, "obj");
}
public DerExternal(
Asn1EncodableVector vector)
{
int offset = 0;
Asn1Object enc = GetObjFromVector(vector, offset);
if (enc is DerObjectIdentifier)
{
directReference = (DerObjectIdentifier)enc;
offset++;
enc = GetObjFromVector(vector, offset);
}
if (enc is DerInteger)
{
indirectReference = (DerInteger) enc;
offset++;
enc = GetObjFromVector(vector, offset);
}
if (!(enc is DerTaggedObject))
{
dataValueDescriptor = (Asn1Object) enc;
offset++;
enc = GetObjFromVector(vector, offset);
}
if (!(enc is DerTaggedObject))
{
throw new InvalidOperationException(
"No tagged object found in vector. Structure doesn't seem to be of type External");
}
if (vector.Count != offset + 1)
throw new ArgumentException("input vector too large", "vector");
if (!(enc is DerTaggedObject))
throw new ArgumentException("No tagged object found in vector. Structure doesn't seem to be of type External", "vector");
DerTaggedObject obj = (DerTaggedObject)enc;
// Use property accessor to include check on value
Encoding = obj.TagNo;
if (encoding < 0 || encoding > 2)
throw new InvalidOperationException("invalid encoding value");
externalContent = obj.GetObject();
}
public DerApplicationSpecific(
int tagNo,
Asn1EncodableVector vec)
{
this.tag = tagNo;
this.isConstructed = true;
MemoryStream bOut = new MemoryStream();
for (int i = 0; i != vec.Count; i++)
{
try
{
byte[] bs = vec[i].GetEncoded();
bOut.Write(bs, 0, bs.Length);
}
catch (IOException e)
{
throw new InvalidOperationException("malformed object", e);
}
}
this.octets = bOut.ToArray();
}
private static Asn1Object GetObjFromVector(Asn1EncodableVector v, int index)
{
if (v.Count <= index)
throw new ArgumentException("too few objects in input vector", "v");
return v[index].ToAsn1Object();
}
internal Asn1EncodableVector ReadVector()
{
Asn1EncodableVector v = new Asn1EncodableVector();
IAsn1Convertible obj;
while ((obj = ReadObject()) != null)
{
v.Add(obj.ToAsn1Object());
}
return v;
}
internal Asn1EncodableVector BuildEncodableVector()
{
Asn1EncodableVector v = new Asn1EncodableVector();
Asn1Object o;
while ((o = ReadObject()) != null)
{
v.Add(o);
}
return v;
}
public BerApplicationSpecific(
int tagNo,
Asn1EncodableVector vec)
: base(tagNo, vec)
{
}
public BerApplicationSpecific(
int tagNo,
Asn1EncodableVector vec)
: base(tagNo, vec)
{
}
public static DerSequence FromVector(
Asn1EncodableVector v)
{
return v.Count < 1 ? Empty : new DerSequence(v);
}
/**
* @param v - a vector of objects making up the set.
*/
public DerSet(
Asn1EncodableVector v)
: this(v, true)
{
}
internal static DerSet FromVector(
Asn1EncodableVector v,
bool needsSorting)
{
return(v.Count < 1 ? Empty : new DerSet(v, needsSorting));
}
public static DerSet FromVector(
Asn1EncodableVector v)
{
return(v.Count < 1 ? Empty : new DerSet(v));
}