public override void Decode(Asn1BerDecodeBuffer buffer, bool explicitTagging, int implicitLength)
{
var elemLength = explicitTagging ? MatchTag(buffer, Tag) : implicitLength;
var lastTag = buffer.LastTag;
if ((lastTag == null) || !lastTag.Constructed)
{
if (elemLength < 0)
{
throw new Exception("Asn1InvalidLengthException");
}
Value = new byte[elemLength];
if (elemLength != 0)
{
buffer.Read(Value);
}
}
else
{
var nbytes = 0;
var offset = 0;
var context = new Asn1BerDecodeContext(buffer, elemLength);
while (!context.Expired())
{
var num2 = MatchTag(buffer, Tag);
if (num2 <= 0)
{
throw new Exception("Asn1InvalidFormatOfConstructedValue");
}
nbytes += num2;
if (offset == 0)
{
Value = new byte[nbytes];
}
else
{
ReAllocByteArray(nbytes);
}
buffer.Read(Value, offset, num2);
offset = nbytes;
}
if (elemLength == Asn1Status.IndefiniteLength)
{
MatchTag(buffer, Asn1Tag.Eoc);
}
}
buffer.TypeCode = OctetStringTypeCode;
}
private void ReadSegment(Asn1BerDecodeBuffer buffer, int llen, IntHolder idx)
{
if ((llen < 0) || ((llen % 4) != 0))
{
throw new FormatException("Asn1InvalidLengthException");
}
var num4 = llen / 4;
if (_value.Length == 0)
{
_value = new int[num4];
}
else if ((idx.Value + num4) >= _value.Length)
{
ReallocIntArray(idx.Value + num4);
}
var value = idx.Value;
while (value < (idx.Value + num4))
{
_value[value] = 0;
for (var i = 0; i < 4; i++)
{
var num = buffer.Read();
if (num == -1)
{
throw new FormatException("Asn1EndOfBufferException");
}
_value[value] = (_value[value] * 0x100) + num;
}
value++;
}
idx.Value = value;
}
public override void Decode(Asn1BerDecodeBuffer buffer, bool explicitTagging, int implicitLength)
{
var elemLength = explicitTagging ? MatchTag(buffer, Tag) : implicitLength;
var lastTag = buffer.LastTag;
if ((lastTag == null) || !lastTag.Constructed)
{
if (elemLength < 0)
{
throw new Exception("Asn1 invalid length exception");
}
if (elemLength != 0)
{
var num8 = elemLength - 1;
var num7 = buffer.Read();
if (num7 < 0)
{
throw new Exception("Asn1 end of buffer exception");
}
if ((num7 < 0) || (num7 > 7))
{
throw new Exception("Asn1 invalid format of bit string");
}
if ((num8 == 0) && (num7 != 0))
{
throw new Exception("Asn1 invalid length exception");
}
NumBits = (num8 * 8) - num7;
Value = new byte[num8];
buffer.Read(Value);
}
else
{
NumBits = 0;
Value = null;
}
}
else
{
var num3 = 0;
var offset = 0;
var index = -1;
var num6 = 0;
var context = new Asn1BerDecodeContext(buffer, elemLength);
while (!context.Expired())
{
var nbytes = MatchTag(buffer, Tag);
if (nbytes <= 0)
{
throw new Exception("Asn1 invalid format of constructed value");
}
num3 += nbytes;
if (offset == 0)
{
AllocBitArray(num3 * 8);
}
else
{
ReallocBitArray(num3 * 8);
}
index = offset;
buffer.Read(Value, offset, nbytes);
offset = num3;
}
if (index >= 0)
{
num6 = Value[index];
if (((offset - index) - 1) > 0)
{
Array.Copy(Value, index + 1, Value, index, (offset - index) - 1);
}
num3--;
}
if ((num6 < 0) || (num6 > 7))
{
throw new Exception("Asn1 invalid format of bit string");
}
ReallocBitArray((num3 * 8) - num6);
if (elemLength == Asn1Status.IndefiniteLength)
{
MatchTag(buffer, Asn1Tag.Eoc);
}
}
buffer.TypeCode = 3;
}
public override void Decode(Asn1BerDecodeBuffer buffer, bool explicitTagging, int implicitLength)
{
var length = explicitTagging ? MatchTag(buffer, Tag) : implicitLength;
if (length == 0)
{
Value = 0.0;
}
else
{
var num2 = buffer.ReadByte();
if (length == 1)
{
switch (num2)
{
case PlusInfinity:
Value = double.PositiveInfinity;
return;
case MinusInfinity:
Value = double.NegativeInfinity;
return;
}
throw new Exception("Asn1InvalidFormatOfConstructedValue");
}
length--;
if ((num2 & RealBinary) == 0)
{
var num8 = length;
var num9 = 0;
var builder = new StringBuilder {
Length = num8
};
while (num8 > 0)
{
var num7 = buffer.Read();
if (num7 == -1)
{
throw new Exception("Asn1EndOfBufferException");
}
builder[num9++] = (char)num7;
num8--;
}
var num10 = num2 & RealIso6093Mask;
var num11 = 0;
for (var i = 0; i < builder.Length; i++)
{
var ch = builder[i];
if ((num10 >= 2) && (ch == ','))
{
builder[i] = '.';
num11++;
}
else if (((num10 >= 1) && (((ch >= '0') && (ch <= '9')) || ((ch == '+') || (ch == '-')))) || (((num10 >= 2) && (ch == '.')) || ((num10 == 3) && ((ch == 'E') || (ch == 'e')))))
{
num11++;
}
else if ((num11 != 0) || (ch != ' '))
{
throw new Exception("Asn1InvalidFormatOfConstructedValue");
}
}
try
{
Value = double.Parse(builder.ToString());
}
catch (FormatException)
{
throw new Exception("Asn1InvalidFormatOfConstructedValue");
}
}
else
{
int num6;
int num3;
switch ((num2 & RealExplenMask))
{
case RealExplen1:
num3 = 1;
break;
case RealExplen2:
num3 = 2;
break;
case RealExplen3:
num3 = 3;
break;
default:
num3 = buffer.ReadByte();
length--;
break;
}
var num4 = (int)Asn1RunTime.DecodeIntValue(buffer, num3, true);
length -= num3;
var num5 = Asn1RunTime.DecodeIntValue(buffer, length, false) * (1L << ((num2 & RealFactorMask) >> 2));
switch ((num2 & RealBaseMask))
{
case RealBase2:
num6 = 2;
break;
case RealBase8:
num6 = 8;
break;
case RealBase16:
num6 = 16;
break;
default:
throw new Exception("Asn1InvalidFormatOfConstructedValue");
}
Value = num5 * Math.Pow(num6, num4);
if ((num2 & PlusInfinity) != 0)
{
Value = -Value;
}
}
buffer.TypeCode = RealTypeCode;
}
}
protected virtual void Decode(Asn1BerDecodeBuffer buffer, bool explicitTagging, int implicitLength, Asn1Tag tag)
{
int num2;
var elemLength = explicitTagging ? MatchTag(buffer, tag) : implicitLength;
var num3 = elemLength;
var num4 = 0;
if (StringBuffer == null)
{
StringBuffer = new StringBuilder();
}
var lastTag = buffer.LastTag;
if ((lastTag == null) || !lastTag.Constructed)
{
if (num3 < 0)
{
throw new Exception("Asn1InvalidLengthException");
}
StringBuffer.Length = num3;
while (num3 > 0)
{
num2 = buffer.Read();
if (num2 == -1)
{
throw new Exception("Asn1EndOfBufferException");
}
StringBuffer[num4++] = (char)num2;
num3--;
}
}
else
{
var capacity = 0;
var context = new Asn1BerDecodeContext(buffer, elemLength);
while (!context.Expired())
{
var num5 = MatchTag(buffer, Asn1OctetString.Tag);
if (num5 <= 0)
{
throw new Exception("Asn1InvalidFormatOfConstructedValue");
}
capacity += num5;
StringBuffer.EnsureCapacity(capacity);
while (num5 > 0)
{
num2 = buffer.Read();
if (num2 == -1)
{
throw new Exception("Asn1EndOfBufferException");
}
StringBuffer.Append((char)num2);
num5--;
}
}
if (elemLength == Asn1Status.IndefiniteLength)
{
MatchTag(buffer, Asn1Tag.Eoc);
}
}
Value = StringBuffer.ToString();
buffer.TypeCode = (short)tag.IdCode;
}