private CBORObject ReadStringArrayMap(int type, long uadditional)
{
bool canonical = this.options.Ctap2Canonical;
if (type == 2) // Byte string
{
if ((uadditional >> 31) != 0)
{
throw new CBORException("Length of " +
ToUnsignedEInteger(uadditional).ToString() + " is bigger" +
"\u0020than supported");
}
int hint = (uadditional > Int32.MaxValue ||
(uadditional >> 63) != 0) ? Int32.MaxValue : (int)uadditional;
byte[] data = ReadByteData(this.stream, uadditional, null);
return(this.ObjectFromByteArray(data, hint));
}
if (type == 3) // Text string
{
if ((uadditional >> 31) != 0)
{
throw new CBORException("Length of " +
ToUnsignedEInteger(uadditional).ToString() + " is bigger" +
"\u0020than supported");
}
if (PropertyMap.ExceedsKnownLength(this.stream, uadditional))
{
throw new CBORException("Premature end of data");
}
var builder = new StringBuilder();
switch (
DataUtilities.ReadUtf8(
this.stream,
(int)uadditional,
builder,
false))
{
case -1:
throw new CBORException("Invalid UTF-8");
case -2:
throw new CBORException("Premature end of data");
}
CBORObject cbor = CBORObject.FromRaw(builder.ToString());
if (this.stringRefs != null)
{
int hint = (uadditional > Int32.MaxValue || (uadditional >> 63) !=
0) ? Int32.MaxValue : (int)uadditional;
this.stringRefs.AddStringIfNeeded(cbor, hint);
}
return(cbor);
}
if (type == 4) // Array
{
if (this.options.Ctap2Canonical && this.depth >= 4)
{
throw new CBORException("Depth too high in canonical CBOR");
}
CBORObject cbor = CBORObject.NewArray();
if ((uadditional >> 31) != 0)
{
throw new CBORException("Length of " +
ToUnsignedEInteger(uadditional).ToString() + " is bigger than" +
"\u0020supported");
}
if (PropertyMap.ExceedsKnownLength(this.stream, uadditional))
{
throw new CBORException("Remaining data too small for array" +
"\u0020length");
}
++this.depth;
for (long i = 0; i < uadditional; ++i)
{
cbor.Add(
this.ReadInternal());
}
--this.depth;
return(cbor);
}
if (type == 5) // Map, type 5
{
if (this.options.Ctap2Canonical && this.depth >= 4)
{
throw new CBORException("Depth too high in canonical CBOR");
}
CBORObject cbor = CBORObject.NewMap();
if ((uadditional >> 31) != 0)
{
throw new CBORException("Length of " +
ToUnsignedEInteger(uadditional).ToString() + " is bigger than" +
"\u0020supported");
}
if (PropertyMap.ExceedsKnownLength(this.stream, uadditional))
{
throw new CBORException("Remaining data too small for map" +
"\u0020length");
}
CBORObject lastKey = null;
IComparer <CBORObject> comparer = CBORCanonical.Comparer;
for (long i = 0; i < uadditional; ++i)
{
++this.depth;
CBORObject key = this.ReadInternal();
CBORObject value = this.ReadInternal();
--this.depth;
if (this.options.Ctap2Canonical && lastKey != null)
{
int cmp = comparer.Compare(lastKey, key);
if (cmp > 0)
{
throw new CBORException("Map key not in canonical order");
}
else if (cmp == 0)
{
throw new CBORException("Duplicate map key");
}
}
if (!this.options.AllowDuplicateKeys)
{
if (cbor.ContainsKey(key))
{
throw new CBORException("Duplicate key already exists");
}
}
lastKey = key;
cbor[key] = value;
}
return(cbor);
}
return(null);
}
public CBORObject ReadForFirstByte(int firstbyte)
{
if (this.depth > 500)
{
throw new CBORException("Too deeply nested");
}
if (firstbyte < 0)
{
throw new CBORException("Premature end of data");
}
if (firstbyte == 0xff)
{
throw new CBORException("Unexpected break code encountered");
}
int type = (firstbyte >> 5) & 0x07;
int additional = firstbyte & 0x1f;
long uadditional;
CBORObject fixedObject;
if (this.options.Ctap2Canonical)
{
if (additional >= 0x1c)
{
// NOTE: Includes stop byte and indefinite length data items
throw new CBORException("Invalid canonical CBOR encountered");
}
// Check if this represents a fixed object (NOTE: All fixed objects
// comply with CTAP2 canonical CBOR).
fixedObject = CBORObject.GetFixedObject(firstbyte);
if (fixedObject != null)
{
return(fixedObject);
}
if (type == 6)
{
throw new CBORException("Tags not allowed in canonical CBOR");
}
uadditional = ReadDataLength(
this.stream,
firstbyte,
type,
type == 7);
if (type == 0)
{
return((uadditional >> 63) != 0 ?
CBORObject.FromObject(ToUnsignedEInteger(uadditional)) :
CBORObject.FromObject(uadditional));
}
else if (type == 1)
{
return((uadditional >> 63) != 0 ? CBORObject.FromObject(
ToUnsignedEInteger(uadditional).Add(1).Negate()) :
CBORObject.FromObject((-uadditional) - 1L));
}
else if (type == 7)
{
if (additional < 24)
{
return(CBORObject.FromSimpleValue(additional));
}
else if (additional == 24 && uadditional < 32)
{
throw new CBORException("Invalid simple value encoding");
}
else if (additional == 24)
{
return(CBORObject.FromSimpleValue((int)uadditional));
}
else if (additional == 25)
{
return(CBORObject.FromFloatingPointBits(uadditional, 2));
}
else if (additional == 26)
{
return(CBORObject.FromFloatingPointBits(uadditional, 4));
}
else if (additional == 27)
{
return(CBORObject.FromFloatingPointBits(uadditional, 8));
}
}
else if (type >= 2 && type <= 5)
{
return(this.ReadStringArrayMap(type, uadditional));
}
throw new CBORException("Unexpected data encountered");
}
int expectedLength = CBORObject.GetExpectedLength(firstbyte);
// Data checks
if (expectedLength == -1)
{
// if the head byte is invalid
throw new CBORException("Unexpected data encountered");
}
// Check if this represents a fixed object
fixedObject = CBORObject.GetFixedObject(firstbyte);
if (fixedObject != null)
{
return(fixedObject);
}
// Read fixed-length data
byte[] data = null;
if (expectedLength != 0)
{
data = new byte[expectedLength];
// include the first byte because GetFixedLengthObject
// will assume it exists for some head bytes
data[0] = unchecked ((byte)firstbyte);
if (expectedLength > 1 &&
this.stream.Read(data, 1, expectedLength - 1) != expectedLength
- 1)
{
throw new CBORException("Premature end of data");
}
CBORObject cbor = CBORObject.GetFixedLengthObject(firstbyte, data);
if (this.stringRefs != null && (type == 2 || type == 3))
{
this.stringRefs.AddStringIfNeeded(cbor, expectedLength - 1);
}
return(cbor);
}
if (additional == 31)
{
// Indefinite-length for major types 2 to 5 (other major
// types were already handled in the call to
// GetFixedLengthObject).
switch (type)
{
case 2: {
// Streaming byte string
using (var ms = new MemoryStream()) {
// Requires same type as this one
while (true)
{
int nextByte = this.stream.ReadByte();
if (nextByte == 0xff)
{
// break if the "break" code was read
break;
}
long len = ReadDataLength(this.stream, nextByte, 2);
if ((len >> 63) != 0 || len > Int32.MaxValue)
{
throw new CBORException("Length" + ToUnsignedEInteger(len)
+
" is bigger than supported ");
}
if (nextByte != 0x40)
{
// NOTE: 0x40 means the empty byte string
ReadByteData(this.stream, len, ms);
}
}
if (ms.Position > Int32.MaxValue)
{
throw new
CBORException("Length of bytes to be streamed is bigger" +
"\u0020than supported ");
}
data = ms.ToArray();
return(CBORObject.FromRaw(data));
}
}
case 3: {
// Streaming text string
var builder = new StringBuilder();
while (true)
{
int nextByte = this.stream.ReadByte();
if (nextByte == 0xff)
{
// break if the "break" code was read
break;
}
long len = ReadDataLength(this.stream, nextByte, 3);
if ((len >> 63) != 0 || len > Int32.MaxValue)
{
throw new CBORException("Length" + ToUnsignedEInteger(len) +
" is bigger than supported");
}
if (nextByte != 0x60)
{
// NOTE: 0x60 means the empty string
if (PropertyMap.ExceedsKnownLength(this.stream, len))
{
throw new CBORException("Premature end of data");
}
switch (
DataUtilities.ReadUtf8(
this.stream,
(int)len,
builder,
false))
{
case -1:
throw new CBORException("Invalid UTF-8");
case -2:
throw new CBORException("Premature end of data");
}
}
}
return(CBORObject.FromRaw(builder.ToString()));
}
case 4: {
CBORObject cbor = CBORObject.NewArray();
var vtindex = 0;
// Indefinite-length array
while (true)
{
int headByte = this.stream.ReadByte();
if (headByte < 0)
{
throw new CBORException("Premature end of data");
}
if (headByte == 0xff)
{
// Break code was read
break;
}
++this.depth;
CBORObject o = this.ReadForFirstByte(
headByte);
--this.depth;
cbor.Add(o);
++vtindex;
}
return(cbor);
}
case 5: {
CBORObject cbor = CBORObject.NewMap();
// Indefinite-length map
while (true)
{
int headByte = this.stream.ReadByte();
if (headByte < 0)
{
throw new CBORException("Premature end of data");
}
if (headByte == 0xff)
{
// Break code was read
break;
}
++this.depth;
CBORObject key = this.ReadForFirstByte(headByte);
CBORObject value = this.ReadInternal();
--this.depth;
if (!this.options.AllowDuplicateKeys)
{
if (cbor.ContainsKey(key))
{
throw new CBORException("Duplicate key already exists");
}
}
cbor[key] = value;
}
return(cbor);
}
default: throw new CBORException("Unexpected data encountered");
}
}
EInteger bigintAdditional = EInteger.Zero;
uadditional = ReadDataLength(this.stream, firstbyte, type);
// The following doesn't check for major types 0 and 1,
// since all of them are fixed-length types and are
// handled in the call to GetFixedLengthObject.
if (type >= 2 && type <= 5)
{
return(this.ReadStringArrayMap(type, uadditional));
}
if (type == 6) // Tagged item
{
var haveFirstByte = false;
var newFirstByte = -1;
if (this.options.ResolveReferences && (uadditional >> 32) == 0)
{
// NOTE: HandleItemTag treats only certain tags up to 256 specially
this.HandleItemTag(uadditional);
}
++this.depth;
CBORObject o = haveFirstByte ? this.ReadForFirstByte(
newFirstByte) : this.ReadInternal();
--this.depth;
if ((uadditional >> 63) != 0)
{
return(CBORObject.FromObjectAndTag(o,
ToUnsignedEInteger(uadditional)));
}
if (uadditional < 65536)
{
if (this.options.ResolveReferences)
{
int uaddl = uadditional >= 257 ? 257 : (uadditional < 0 ? 0 :
(int)uadditional);
switch (uaddl)
{
case 256:
// string tag
this.stringRefs.Pop();
break;
case 25:
// stringref tag
if (o.IsTagged || o.Type != CBORType.Integer)
{
throw new CBORException("stringref must be an unsigned" +
"\u0020integer");
}
return(this.stringRefs.GetString(o.AsEIntegerValue()));
}
}
return(CBORObject.FromObjectAndTag(
o,
(int)uadditional));
}
return(CBORObject.FromObjectAndTag(
o,
(EInteger)uadditional));
}
throw new CBORException("Unexpected data encountered");
}
public static object TypeToObject(
CBORObject objThis,
Type t,
CBORTypeMapper mapper,
PODOptions options,
int depth)
{
if (t.Equals(typeof(int)))
{
return(objThis.AsInt32());
}
if (t.Equals(typeof(short)))
{
return(objThis.AsNumber().ToInt16Checked());
}
if (t.Equals(typeof(ushort)))
{
return(objThis.AsUInt16Legacy());
}
if (t.Equals(typeof(byte)))
{
return(objThis.AsByteLegacy());
}
if (t.Equals(typeof(sbyte)))
{
return(objThis.AsSByteLegacy());
}
if (t.Equals(typeof(long)))
{
return(objThis.AsNumber().ToInt64Checked());
}
if (t.Equals(typeof(uint)))
{
return(objThis.AsUInt32Legacy());
}
if (t.Equals(typeof(ulong)))
{
return(objThis.AsUInt64Legacy());
}
if (t.Equals(typeof(double)))
{
return(objThis.AsDouble());
}
if (t.Equals(typeof(decimal)))
{
return(objThis.AsDecimal());
}
if (t.Equals(typeof(float)))
{
return(objThis.AsSingle());
}
if (t.Equals(typeof(bool)))
{
return(objThis.AsBoolean());
}
if (t.Equals(typeof(char)))
{
if (objThis.Type == CBORType.TextString)
{
string s = objThis.AsString();
if (s.Length != 1)
{
throw new CBORException("Can't convert to char");
}
return(s[0]);
}
if (objThis.IsNumber && objThis.AsNumber().CanFitInInt32())
{
int c = objThis.AsNumber().ToInt32IfExact();
if (c < 0 || c >= 0x10000)
{
throw new CBORException("Can't convert to char");
}
return((char)c);
}
throw new CBORException("Can't convert to char");
}
if (t.Equals(typeof(DateTime)))
{
return(new CBORDateConverter().FromCBORObject(objThis));
}
if (t.Equals(typeof(Guid)))
{
return(new CBORUuidConverter().FromCBORObject(objThis));
}
if (t.Equals(typeof(Uri)))
{
return(new CBORUriConverter().FromCBORObject(objThis));
}
if (IsAssignableFrom(typeof(Enum), t))
{
return(ObjectToEnum(objThis, t));
}
if (IsGenericType(t))
{
Type td = t.GetGenericTypeDefinition();
// Nullable types
if (td.Equals(typeof(Nullable <>)))
{
Type nullableType = Nullable.GetUnderlyingType(t);
if (objThis.IsNull)
{
return(Activator.CreateInstance(t));
}
else
{
object wrappedObj = objThis.ToObject(
nullableType,
mapper,
options,
depth + 1);
return(Activator.CreateInstance(
t,
wrappedObj));
}
}
}
if (objThis.Type == CBORType.ByteString)
{
if (t.Equals(typeof(byte[])))
{
byte[] bytes = objThis.GetByteString();
var byteret = new byte[bytes.Length];
Array.Copy(bytes, 0, byteret, 0, byteret.Length);
return(byteret);
}
}
if (objThis.Type == CBORType.Array)
{
Type objectType = typeof(object);
var isList = false;
object listObject = null;
#if NET40 || NET20
if (IsAssignableFrom(typeof(Array), t))
{
Type elementType = t.GetElementType();
Array array = Array.CreateInstance(
elementType,
GetDimensions(objThis));
return(FillArray(
array,
elementType,
objThis,
mapper,
options,
depth));
}
if (t.IsGenericType)
{
Type td = t.GetGenericTypeDefinition();
isList = td.Equals(typeof(List <>)) || td.Equals(typeof(IList <>)) ||
td.Equals(typeof(ICollection <>)) ||
td.Equals(typeof(IEnumerable <>));
}
isList = isList && t.GetGenericArguments().Length == 1;
if (isList)
{
objectType = t.GetGenericArguments()[0];
Type listType = typeof(List <>).MakeGenericType(objectType);
listObject = Activator.CreateInstance(listType);
}
#else
if (IsAssignableFrom(typeof(Array), t))
{
Type elementType = t.GetElementType();
Array array = Array.CreateInstance(
elementType,
GetDimensions(objThis));
return(FillArray(
array,
elementType,
objThis,
mapper,
options,
depth));
}
if (t.GetTypeInfo().IsGenericType)
{
Type td = t.GetGenericTypeDefinition();
isList = td.Equals(typeof(List <>)) || td.Equals(typeof(IList <>)) ||
td.Equals(typeof(ICollection <>)) ||
td.Equals(typeof(IEnumerable <>));
}
isList = isList && t.GenericTypeArguments.Length == 1;
if (isList)
{
objectType = t.GenericTypeArguments[0];
Type listType = typeof(List <>).MakeGenericType(objectType);
listObject = Activator.CreateInstance(listType);
}
#endif
if (listObject == null)
{
if (t.Equals(typeof(IList)) ||
t.Equals(typeof(ICollection)) || t.Equals(typeof(IEnumerable)))
{
listObject = new List <object>();
objectType = typeof(object);
}
}
if (listObject != null)
{
System.Collections.IList ie = (System.Collections.IList)listObject;
foreach (CBORObject value in objThis.Values)
{
ie.Add(value.ToObject(objectType, mapper, options, depth + 1));
}
return(listObject);
}
}
if (objThis.Type == CBORType.Map)
{
var isDict = false;
Type keyType = null;
Type valueType = null;
object dictObject = null;
#if NET40 || NET20
isDict = t.IsGenericType;
if (t.IsGenericType)
{
Type td = t.GetGenericTypeDefinition();
isDict = td.Equals(typeof(Dictionary <,>)) ||
td.Equals(typeof(IDictionary <,>));
}
// DebugUtility.Log("list=" + isDict);
isDict = isDict && t.GetGenericArguments().Length == 2;
// DebugUtility.Log("list=" + isDict);
if (isDict)
{
keyType = t.GetGenericArguments()[0];
valueType = t.GetGenericArguments()[1];
Type listType = typeof(Dictionary <,>).MakeGenericType(
keyType,
valueType);
dictObject = Activator.CreateInstance(listType);
}
#else
isDict = t.GetTypeInfo().IsGenericType;
if (t.GetTypeInfo().IsGenericType)
{
Type td = t.GetGenericTypeDefinition();
isDict = td.Equals(typeof(Dictionary <,>)) ||
td.Equals(typeof(IDictionary <,>));
}
// DebugUtility.Log("list=" + isDict);
isDict = isDict && t.GenericTypeArguments.Length == 2;
// DebugUtility.Log("list=" + isDict);
if (isDict)
{
keyType = t.GenericTypeArguments[0];
valueType = t.GenericTypeArguments[1];
Type listType = typeof(Dictionary <,>).MakeGenericType(
keyType,
valueType);
dictObject = Activator.CreateInstance(listType);
}
#endif
if (dictObject == null)
{
if (t.Equals(typeof(IDictionary)))
{
dictObject = new Dictionary <object, object>();
keyType = typeof(object);
valueType = typeof(object);
}
}
if (dictObject != null)
{
System.Collections.IDictionary idic =
(System.Collections.IDictionary)dictObject;
foreach (CBORObject key in objThis.Keys)
{
CBORObject value = objThis[key];
idic.Add(
key.ToObject(keyType, mapper, options, depth + 1),
value.ToObject(valueType, mapper, options, depth + 1));
}
return(dictObject);
}
if (mapper != null)
{
if (!mapper.FilterTypeName(t.FullName))
{
throw new CBORException("Type " + t.FullName +
" not supported");
}
}
else
{
if (t.FullName != null && (
StartsWith(t.FullName, "Microsoft.Win32.") ||
StartsWith(t.FullName, "System.IO.")))
{
throw new CBORException("Type " + t.FullName +
" not supported");
}
if (StartsWith(t.FullName, "System.") &&
!HasCustomAttribute(t, "System.SerializableAttribute"))
{
throw new CBORException("Type " + t.FullName +
" not supported");
}
}
var values = new List <KeyValuePair <string, CBORObject> >();
var propNames = PropertyMap.GetPropertyNames(
t,
options != null ? options.UseCamelCase : true);
foreach (string key in propNames)
{
if (objThis.ContainsKey(key))
{
CBORObject cborValue = objThis[key];
var dict = new KeyValuePair <string, CBORObject>(
key,
cborValue);
values.Add(dict);
}
}
return(PropertyMap.ObjectWithProperties(
t,
values,
mapper,
options,
depth));
}
else
{
throw new CBORException();
}
}
