internal DNPart(string oid, AsnElt val)
{
OID_ = oid;
AsnValue_ = val;
encodedValue = val.Encode();
uint hc = (uint)oid.GetHashCode();
try {
string s = val.GetString();
Value_ = s;
s = s.ToUpperInvariant().ToLowerInvariant();
StringBuilder sb = new StringBuilder();
bool lwws = true;
foreach (char c in s.Trim())
{
if (IsControl(c))
{
continue;
}
if (IsWS(c))
{
if (lwws)
{
continue;
}
lwws = true;
sb.Append(' ');
}
else
{
sb.Append(c);
}
}
int n = sb.Length;
if (n > 0 && sb[n - 1] == ' ')
{
sb.Length = n - 1;
}
normValue = sb.ToString();
hc += (uint)normValue.GetHashCode();
} catch {
if (OID_TO_FT.ContainsKey(oid))
{
throw;
}
Value_ = null;
foreach (byte b in encodedValue)
{
hc = ((hc << 7) | (hc >> 25)) ^ (uint)b;
}
}
hashCode = (int)hc;
}
static AsnElt Duplicate(AsnElt ae)
{
if (ae.Constructed)
{
int n = ae.Sub.Length;
AsnElt[] ss = new AsnElt[n];
for (int i = 0; i < n; i++)
{
ss[i] = Duplicate(ae.Sub[i]);
}
return(AsnElt.Make(ae.TagClass, ae.TagValue, ss));
}
if (ae.TagClass == AsnElt.UNIVERSAL)
{
switch (ae.TagValue)
{
case AsnElt.BOOLEAN:
return(ae.GetBoolean()
? AsnElt.BOOL_TRUE : AsnElt.BOOL_FALSE);
case AsnElt.INTEGER:
return(AsnElt.MakeIntegerSigned(
ae.CopyValue()));
case AsnElt.OBJECT_IDENTIFIER:
return(AsnElt.MakeOID(ae.GetOID()));
case AsnElt.NumericString:
case AsnElt.PrintableString:
case AsnElt.IA5String:
case AsnElt.TeletexString:
case AsnElt.UTF8String:
case AsnElt.BMPString:
case AsnElt.UniversalString:
case AsnElt.UTCTime:
case AsnElt.GeneralizedTime:
return(AsnElt.MakeString(
ae.TagValue, ae.GetString()));
}
}
/*
* All other primitive types will be treated as blobs.
* We still need to duplicate them in order to avoid
* variants in tag/length encoding.
*/
return(AsnElt.MakePrimitive(ae.TagClass,
ae.TagValue, ae.CopyValue()));
}
static void Parse(TextWriter tw, int depth, AsnElt ae)
{
Indent(tw, depth);
tw.Write("(");
switch (ae.TagClass)
{
case AsnElt.APPLICATION:
tw.Write("[application " + ae.TagValue + "]");
break;
case AsnElt.CONTEXT:
tw.Write("[" + ae.TagValue + "]");
break;
case AsnElt.PRIVATE:
tw.Write("[private " + ae.TagValue + "]");
break;
default:
switch (ae.TagValue)
{
case AsnElt.BOOLEAN:
tw.Write("bool " + ae.GetBoolean() + ")");
return;
case AsnElt.INTEGER:
tw.Write("int " + ae.GetIntegerHex() + ")");
return;
case AsnElt.BIT_STRING:
int bitLen;
byte[] bs = ae.GetBitString(out bitLen);
tw.Write("bits "
+ (bs.Length * 8 - bitLen));
PrintBytes(tw, depth, bs);
tw.Write(")");
return;
case AsnElt.OCTET_STRING:
tw.Write("blob");
PrintBytes(tw, depth, ae.CopyValue());
tw.Write(")");
return;
case AsnElt.NULL:
ae.CheckNull();
tw.Write("null)");
return;
case AsnElt.OBJECT_IDENTIFIER:
string oid = ae.GetOID();
if (!numOID)
{
oid = AsnOID.ToName(oid);
}
tw.Write("oid " + oid + ")");
return;
case AsnElt.NumericString:
tw.Write("numeric "
+ EscapeString(ae.GetString()) + ")");
return;
case AsnElt.PrintableString:
tw.Write("printable "
+ EscapeString(ae.GetString()) + ")");
return;
case AsnElt.IA5String:
tw.Write("ia5 "
+ EscapeString(ae.GetString()) + ")");
return;
case AsnElt.TeletexString:
tw.Write("teletex "
+ EscapeString(ae.GetString()) + ")");
return;
case AsnElt.UTF8String:
tw.Write("utf8 "
+ EscapeString(ae.GetString()) + ")");
return;
case AsnElt.BMPString:
tw.Write("bmp "
+ EscapeString(ae.GetString()) + ")");
return;
case AsnElt.UniversalString:
tw.Write("utf32 "
+ EscapeString(ae.GetString()) + ")");
return;
case AsnElt.UTCTime:
tw.Write("utc "
+ EscapeString(ae.GetString())
+ " {" + ae.GetTime() + "} )");
return;
case AsnElt.GeneralizedTime:
tw.Write("gentime "
+ EscapeString(ae.GetString())
+ " {" + ae.GetTime() + "} )");
return;
case AsnElt.SEQUENCE:
if (!ae.Constructed)
{
throw new AsnException(
"Non-constructed SEQUENCE");
}
tw.Write("sequence");
ParseSubs(tw, depth, ae);
tw.Write(")");
return;
case AsnElt.SET:
if (!ae.Constructed)
{
throw new AsnException(
"Non-constructed SET");
}
tw.Write("set");
ParseSubs(tw, depth, ae);
tw.Write(")");
return;
default:
tw.Write(
"[universal " + ae.TagValue + "]");
break;
}
break;
}
if (ae.Constructed)
{
tw.Write("sequence");
ParseSubs(tw, depth, ae);
tw.Write(")");
}
else
{
tw.Write("blob");
PrintBytes(tw, depth, ae.CopyValue());
tw.Write(")");
}
}