/**
* return an Integer from a tagged object.
*
* @param obj the tagged object holding the object we want
* @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 DerInteger GetInstance(
Asn1TaggedObject obj,
bool explicitly)
{
if (obj == null)
throw new ArgumentNullException("obj");
return GetInstance(obj.GetObject());
}
/**
* return a Videotex String from a tagged object.
*
* @param obj the tagged object holding the object we want
* @param explicit true if the object is meant to be explicitly
* tagged false otherwise.
* @exception IllegalArgumentException if the tagged object cannot
* be converted.
* @return a DERVideotexString instance, or null.
*/
public static DerVideotexString GetInstance(Asn1TaggedObject obj, bool isExplicit)
{
Asn1Object o = obj.GetObject();
if (isExplicit || o is DerVideotexString)
{
return GetInstance(o);
}
return new DerVideotexString(((Asn1OctetString)o).GetOctets());
}
static public Asn1TaggedObject GetInstance(
Asn1TaggedObject obj,
bool explicitly)
{
if (explicitly)
{
return (Asn1TaggedObject) obj.GetObject();
}
throw new ArgumentException("implicitly tagged tagged object");
}
/**
* return an OriginatorIdentifierOrKey object from a tagged object.
*
* @param o the tagged object holding the object we want.
* @param explicitly true if the object is meant to be explicitly
* tagged false otherwise.
* @exception ArgumentException if the object held by the
* tagged object cannot be converted.
*/
public static OriginatorIdentifierOrKey GetInstance(
Asn1TaggedObject o,
bool explicitly)
{
if (!explicitly)
{
throw new ArgumentException(
"Can't implicitly tag OriginatorIdentifierOrKey");
}
return GetInstance(o.GetObject());
}
/**
* return an Octet string from a tagged object.
*
* @param obj the tagged object holding the object we want.
* @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 Asn1OctetString GetInstance(
Asn1TaggedObject obj,
bool isExplicit)
{
Asn1Object o = obj.GetObject();
if (isExplicit || o is Asn1OctetString)
{
return GetInstance(o);
}
return BerOctetString.FromSequence(Asn1Sequence.GetInstance(o));
}
/**
* return a Generalized Time object from a tagged object.
*
* @param obj the tagged object holding the object we want
* @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 DerGeneralizedTime GetInstance(
Asn1TaggedObject obj,
bool isExplicit)
{
Asn1Object o = obj.GetObject();
if (isExplicit || o is DerGeneralizedTime)
{
return GetInstance(o);
}
return new DerGeneralizedTime(((Asn1OctetString)o).GetOctets());
}
/**
* return a Boolean from a tagged object.
*
* @param obj the tagged object holding the object we want
* @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 DerBoolean GetInstance(
Asn1TaggedObject obj,
bool isExplicit)
{
Asn1Object o = obj.GetObject();
if (isExplicit || o is DerBoolean)
{
return GetInstance(o);
}
return FromOctetString(((Asn1OctetString)o).GetOctets());
}
/**
* 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");
}
/**
* return an Integer from a tagged object.
*
* @param obj the tagged object holding the object we want
* @param isExplicit true if the object is meant to be explicitly
* tagged false otherwise.
* @exception ArgumentException if the tagged object cannot
* be converted.
*/
public static DerInteger GetInstance(
Asn1TaggedObject obj,
bool isExplicit)
{
if (obj == null)
throw new ArgumentNullException("obj");
Asn1Object o = obj.GetObject();
if (isExplicit || o is DerInteger)
{
return GetInstance(o);
}
return new DerInteger(Asn1OctetString.GetInstance(o).GetOctets());
}
/**
* Return an ASN1 sequence 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
* sequence - 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 sequences 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 Asn1Sequence GetInstance(
Asn1TaggedObject obj,
bool explicitly)
{
Asn1Object inner = obj.GetObject();
if (explicitly)
{
if (!obj.IsExplicit())
throw new ArgumentException("object implicit - explicit expected.");
return (Asn1Sequence) inner;
}
//
// constructed object which appears to be explicitly tagged
// when it should be implicit means we have to add the
// surrounding sequence.
//
if (obj.IsExplicit())
{
if (obj is BerTaggedObject)
{
return new BerSequence(inner);
}
return new DerSequence(inner);
}
if (inner is Asn1Sequence)
{
return (Asn1Sequence) inner;
}
throw new ArgumentException("Unknown object in GetInstance: " + obj.GetType().FullName, "obj");
}
/**
* return an object Identifier from a tagged object.
*
* @param obj the tagged object holding the object we want
* @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 DerObjectIdentifier GetInstance(
Asn1TaggedObject obj,
bool explicitly)
{
return GetInstance(obj.GetObject());
}
public static Time GetInstance(
Asn1TaggedObject obj,
bool explicitly)
{
return GetInstance(obj.GetObject());
}
/**
* return an Enumerated from a tagged object.
*
* @param obj the tagged object holding the object we want
* @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 DerEnumerated GetInstance(
Asn1TaggedObject obj,
bool explicitly)
{
return GetInstance(obj.GetObject());
}
/**
* return a Generalized Time object from a tagged object.
*
* @param obj the tagged object holding the object we want
* @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 DerGeneralizedTime GetInstance(
Asn1TaggedObject obj,
bool explicitly)
{
return(GetInstance(obj.GetObject()));
}
/**
* return an Enumerated from a tagged object.
*
* @param obj the tagged object holding the object we want
* @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 DerEnumerated GetInstance(
Asn1TaggedObject obj,
bool explicitly)
{
return(GetInstance(obj.GetObject()));
}
public static ResponderID GetInstance(
Asn1TaggedObject obj,
bool isExplicit)
{
return GetInstance(obj.GetObject()); // must be explicitly tagged
}
public static AttCertIssuer GetInstance(
Asn1TaggedObject obj,
bool isExplicit)
{
return GetInstance(obj.GetObject()); // must be explictly tagged
}
public static DerObjectIdentifier GetInstance(Asn1TaggedObject obj, bool explicitly) => GetInstance(obj.GetObject());
/**
* return a Visible string from a tagged object.
*
* @param obj the tagged object holding the object we want
* @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 DerVisibleString GetInstance(
Asn1TaggedObject obj,
bool explicitly)
{
return(GetInstance(obj.GetObject()));
}
/**
* return an Octet string from a tagged object.
*
* @param obj the tagged object holding the object we want.
* @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 Asn1OctetString GetInstance(
Asn1TaggedObject obj,
bool explicitly)
{
return(GetInstance(obj.GetObject()));
}
/**
* return an T61 string from a tagged object.
*
* @param obj the tagged object holding the object we want
* @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 DerT61String GetInstance(
Asn1TaggedObject obj,
bool explicitly)
{
return GetInstance(obj.GetObject());
}
protected override bool Asn1Equals(Asn1Object asn1Object)
{
Asn1TaggedObject obj2 = asn1Object as Asn1TaggedObject;
if (obj2 == null)
{
return(false);
}
return(((this.tagNo == obj2.tagNo) && (this.explicitly == obj2.explicitly)) && object.Equals(this.GetObject(), obj2.GetObject()));
}
