public virtual void encode <T>(T obj, Stream stream)
{
object ob = (object)obj;
ElementInfo elemInfo = new ElementInfo();
elemInfo.AnnotatedClass = obj.GetType();
int sizeOfEncodedBytes = 0;
if (obj is IASN1PreparedElement)
{
sizeOfEncodedBytes = encodePreparedElement(obj, stream, elemInfo);
}
else
{
elemInfo.ASN1ElementInfo = CoderUtils.getAttribute <ASN1Element>(obj.GetType());
sizeOfEncodedBytes = encodeClassType(obj, stream, elemInfo);
}
if (sizeOfEncodedBytes == 0)
{
throw new ArgumentException("Unable to find any supported annotation for class type: " + obj.GetType());
}
;
}
public virtual T decode <T>(Stream stream)
{
Type objectClass = typeof(T);
ElementInfo elemInfo = new ElementInfo();
elemInfo.AnnotatedClass = objectClass;
object objectInstance = null;
if (CoderUtils.isImplements(objectClass, (typeof(IASN1PreparedElement))))
{
objectInstance = createInstanceForElement(objectClass, elemInfo);
}
if (objectInstance != null && objectInstance is IASN1PreparedElement)
{
elemInfo.PreparedInstance = objectInstance;
return((T)decodePreparedElement(decodeTag(stream), objectClass, elemInfo, stream).Value);
}
else
{
elemInfo.ASN1ElementInfo = CoderUtils.getAttribute <ASN1Element>(objectClass);
return((T)decodeClassType(decodeTag(stream), objectClass, elemInfo, stream).Value);
}
}
public virtual int encodeEnum(object obj, Stream stream, ElementInfo elementInfo)
{
int resultSize = 0;
PropertyInfo field =
obj.GetType().GetProperty("Value");
object result = invokeGetterMethodForField(field, obj, null);
Type enumClass = null;
foreach (MemberInfo member in obj.GetType().GetMembers())
{
if (member is Type)
{
Type cls = (Type)member;
if (cls.IsEnum)
{
enumClass = cls;
foreach (FieldInfo enumItem in cls.GetFields())
{
if (CoderUtils.isAttributePresent <ASN1EnumItem>(enumItem))
{
if (enumItem.Name.Equals(result.ToString(), StringComparison.CurrentCultureIgnoreCase))
{
elementInfo.AnnotatedClass = enumItem;
break;
}
}
}
break;
}
}
}
resultSize += encodeEnumItem(result, enumClass, stream, elementInfo);
return(resultSize);
}
public virtual int encodeBoxedType(object obj, Stream stream, ElementInfo elementInfo)
{
PropertyInfo field = obj.GetType().GetProperty("Value");
elementInfo.AnnotatedClass = field;
if (elementInfo.ASN1ElementInfo == null)
{
elementInfo.ASN1ElementInfo = CoderUtils.getAttribute <ASN1Element>(field);
}
else
{
if (!elementInfo.ASN1ElementInfo.HasTag)
{
ASN1Element fieldInfo = CoderUtils.getAttribute <ASN1Element>(field);
if (fieldInfo != null && fieldInfo.HasTag)
{
elementInfo.ASN1ElementInfo.HasTag = true;
elementInfo.ASN1ElementInfo.TagClass = fieldInfo.TagClass;
elementInfo.ASN1ElementInfo.IsImplicitTag = fieldInfo.IsImplicitTag;
elementInfo.ASN1ElementInfo.Tag = fieldInfo.Tag;
}
}
}
if (CoderUtils.isAttributePresent <ASN1Null>(field))
{
return(encodeNull(obj, stream, elementInfo));
}
else
{
return(encodeClassType(invokeGetterMethodForField(field, obj, elementInfo), stream, elementInfo));
}
}
public virtual int encodeSequenceField(object obj, int fieldIdx, PropertyInfo field, Stream stream, ElementInfo elementInfo)
{
ElementInfo info = new ElementInfo();
info.AnnotatedClass = field;
if (elementInfo.hasPreparedInfo())
{
info.PreparedInfo = elementInfo.PreparedInfo.getPropertyMetadata(fieldIdx);
}
else
{
info.ASN1ElementInfo = CoderUtils.getAttribute <ASN1Element>(field);
}
int resultSize = 0;
if (CoderUtils.isNullField(field, info))
{
return(encodeNull(obj, stream, elementInfo));
}
else
{
object invokeObjResult = invokeGetterMethodForField(field, obj, info);
if (invokeObjResult != null)
{
resultSize += encodeClassType(invokeObjResult, stream, info);
}
else
{
CoderUtils.checkForOptionalField(field, info);
}
}
return(resultSize);
}
private void setupAccessors(Type objectClass, PropertyInfo field)
{
try
{
doSelectMethod = CoderUtils.findDoSelectMethodForField(field, objectClass);
}
catch (Exception)
{
}
try
{
isSelectedMethod = CoderUtils.findIsSelectedMethodForField(field, objectClass);
}
catch (Exception)
{
}
try
{
isPresentMethod = CoderUtils.findIsPresentMethodForField(field, objectClass);
}
catch (Exception)
{
}
}
public virtual object invokeGetterMethodForField(PropertyInfo field, object obj, ElementInfo info)
{
MethodInfo method = null;
if (info != null && info.hasPreparedInfo())
{
method = info.PreparedInfo.IsPresentMethod;
}
else
{
method = CoderUtils.findIsPresentMethodForField(field, obj.GetType());
}
if (method != null)
{
if ((bool)method.Invoke(obj, null))
{
return(field.GetValue(obj, null));
}
else
{
return(null);
}
}
return(field.GetValue(obj, null));
}
private void setupConstraint(ICustomAttributeProvider annotated)
{
if (CoderUtils.isAttributePresent <ASN1SizeConstraint>(annotated))
{
constraint = new ASN1SizeConstraintMetadata(CoderUtils.getAttribute <ASN1SizeConstraint>(annotated));
}
else if (CoderUtils.isAttributePresent <ASN1ValueRangeConstraint>(annotated))
{
constraint = new ASN1ValueRangeConstraintMetadata(CoderUtils.getAttribute <ASN1ValueRangeConstraint>(annotated));
}
}
public virtual bool invokeSelectedMethodForField(PropertyInfo field, object obj, ElementInfo info)
{
if (info != null && info.hasPreparedInfo())
{
return((bool)info.PreparedInfo.invokeIsSelectedMethod(obj, null));
}
else
{
MethodInfo method = CoderUtils.findIsSelectedMethodForField(field, obj.GetType());
return((bool)method.Invoke(obj, null));
}
}
public void invokeSelectMethodForField(PropertyInfo field, object obj, object param, ElementInfo info)
{
if (info.hasPreparedInfo())
{
info.PreparedInfo.invokeDoSelectMethod(obj, param);
}
else
{
MethodInfo method = CoderUtils.findDoSelectMethodForField(field, obj.GetType());
method.Invoke(obj, new[] { param });
}
}
public virtual DecodedObject <object> decodeEnum(DecodedObject <object> decodedTag, Type objectClass, ElementInfo elementInfo, Stream stream)
{
Type enumClass = null;
foreach (MemberInfo member in objectClass.GetMembers())
{
if (member is Type)
{
Type cls = (Type)member;
if (cls.IsEnum)
{
enumClass = cls;
break;
}
}
}
;
PropertyInfo field = objectClass.GetProperty("Value");
DecodedObject <object> itemValue = decodeEnumItem(decodedTag, field.PropertyType, enumClass, elementInfo, stream);
FieldInfo param = null;
if (itemValue != null)
{
object result = createInstanceForElement(objectClass, elementInfo);
foreach (FieldInfo enumItem in enumClass.GetFields())
{
if (CoderUtils.isAttributePresent <ASN1EnumItem>(enumItem))
{
ASN1EnumItem meta =
CoderUtils.getAttribute <ASN1EnumItem>(enumItem);
if (meta.Tag.Equals(itemValue.Value))
{
param = enumItem;
break;
}
}
}
invokeSetterMethodForField(field, result, param.GetValue(null), null);
return(new DecodedObject <object>(result, itemValue.Size));
}
else
{
return(null);
}
}
public virtual DecodedObject <object> decodeBoxedType(DecodedObject <object> decodedTag, Type objectClass, ElementInfo elementInfo, Stream stream)
{
object resultObj = createInstanceForElement(objectClass, elementInfo);
DecodedObject <object> result = new DecodedObject <object>(resultObj);
PropertyInfo field = objectClass.GetProperty("Value");
if (elementInfo.ASN1ElementInfo == null)
{
elementInfo.ASN1ElementInfo = CoderUtils.getAttribute <ASN1Element>(field);
}
else
{
if (!elementInfo.ASN1ElementInfo.HasTag)
{
ASN1Element fieldInfo = CoderUtils.getAttribute <ASN1Element>(field);
if (fieldInfo != null && fieldInfo.HasTag)
{
elementInfo.ASN1ElementInfo.HasTag = true;
elementInfo.ASN1ElementInfo.TagClass = fieldInfo.TagClass;
elementInfo.ASN1ElementInfo.IsImplicitTag = fieldInfo.IsImplicitTag;
elementInfo.ASN1ElementInfo.Tag = fieldInfo.Tag;
}
}
}
elementInfo.AnnotatedClass = field;
//elementInfo.setGenericInfo(field.getGenericType());
DecodedObject <object> val = null;
if (CoderUtils.isAttributePresent <ASN1Null>(field))
{
val = decodeNull(decodedTag, field.PropertyType, elementInfo, stream);
}
else
{
val = decodeClassType(decodedTag, field.PropertyType, elementInfo, stream);
if (val != null)
{
result.Size = val.Size;
invokeSetterMethodForField(field, resultObj, val.Value, elementInfo);
}
else
{
result = null;
}
}
return(result);
}
private void setupConstructed(Type objectClass)
{
int count = 0;
PropertyInfo[] srcFields = null;
if (typeMeta != null && typeMeta is ASN1SequenceMetadata && ((ASN1SequenceMetadata)typeMeta).IsSet)
{
SortedList <int, PropertyInfo> fieldOrder = CoderUtils.getSetOrder(objectClass);
srcFields = new PropertyInfo[fieldOrder.Count];
fieldOrder.Values.CopyTo(srcFields, 0);
count = srcFields.Length;
}
else
{
srcFields = objectClass.GetProperties(); //objectClass.getDeclaredFields();
foreach (PropertyInfo field in srcFields)
{
if (!field.PropertyType.Equals(typeof(IASN1PreparedElementData)))
{
count++;
}
}
}
properties = new PropertyInfo[count];
propertiesMetadata = new ASN1PreparedElementData[count];
int idx = 0;
foreach (PropertyInfo field in srcFields)
{
if (!field.PropertyType.Equals(typeof(IASN1PreparedElementData)))
{
properties[idx] = field;
propertiesMetadata[idx] = new ASN1PreparedElementData(objectClass, field);
if (properties[idx].Name.Equals("Value"))
{
setValueField(field, propertiesMetadata[idx]);
}
idx++;
}
}
}
public virtual DecodedObject <object> decodeChoice(DecodedObject <object> decodedTag, Type objectClass, ElementInfo elementInfo, Stream stream)
{
object choice = createInstanceForElement(objectClass, elementInfo);
DecodedObject <object> val = null;
PropertyInfo[] fields = elementInfo.getProperties(objectClass);
int fieldIdx = 0;
foreach (PropertyInfo field in fields)
{
ElementInfo info = new ElementInfo();
info.AnnotatedClass = field;
if (elementInfo.hasPreparedInfo())
{
info.PreparedInfo = elementInfo.PreparedInfo.getPropertyMetadata(fieldIdx);
}
else
{
info.ASN1ElementInfo = CoderUtils.getAttribute <ASN1Element>(field);
}
val = decodeClassType(decodedTag, field.PropertyType, info, stream);
fieldIdx++;
if (val != null)
{
invokeSelectMethodForField(field, choice, val.Value, info);
break;
}
;
}
if (val == null && !CoderUtils.isOptional(elementInfo))
{
throw new ArgumentException("The choice '" + objectClass + "' does not have a selected item!");
}
else
{
return(new DecodedObject <object>(choice, val != null ? val.Size : 0));
}
}
protected ElementInfo getChoiceSelectedElement(Object obj, ElementInfo elementInfo)
{
ElementInfo info = null;
PropertyInfo[] fields = elementInfo.getProperties(obj.GetType());
int fieldIdx = 0;
foreach (PropertyInfo field in fields)
{
info = new ElementInfo();
info.AnnotatedClass = field;
if (elementInfo.hasPreparedInfo())
{
info.PreparedInfo = (elementInfo.PreparedInfo.getPropertyMetadata(fieldIdx));
}
else
{
info.ASN1ElementInfo = CoderUtils.getAttribute <ASN1Element>(field);
}
if (invokeSelectedMethodForField(field, obj, info))
{
break;
}
else
{
info = null;
}
fieldIdx++;
}
if (info == null)
{
throw new ArgumentException("The choice '" + obj + "' does not have a selected item!");
}
return(info);
}
public virtual DecodedObject <object> decodeSequenceField(DecodedObject <object> fieldTag, object sequenceObj, int fieldIdx, PropertyInfo field, Stream stream, ElementInfo elementInfo, bool checkOptional)
{
ElementInfo info = new ElementInfo();
info.AnnotatedClass = field;
info.MaxAvailableLen = elementInfo.MaxAvailableLen;
if (elementInfo.hasPreparedInfo())
{
info.PreparedInfo = elementInfo.PreparedInfo.getPropertyMetadata(fieldIdx);
}
else
{
info.ASN1ElementInfo = CoderUtils.getAttribute <ASN1Element>(field);
}
if (CoderUtils.isNullField(field, info))
{
return(decodeNull(fieldTag, field.PropertyType, info, stream));
}
else
{
DecodedObject <object> val = decodeClassType(fieldTag, field.PropertyType, info, stream);
if (val != null)
{
invokeSetterMethodForField(field, sequenceObj, val.Value, info);
}
else
{
if (checkOptional)
{
CoderUtils.checkForOptionalField(field, info);
}
}
return(val);
}
}
/*public ASN1PreparedElementData(Type parentClass, String propertyName)
* {
* try
* {
* PropertyInfo field = parentClass.GetProperty(propertyName);
* setupMetadata(field, field.PropertyType);
* setupAccessors(parentClass, field);
* }
* catch (Exception ex)
* {
* ex = null;
* }
* }*/
private void setupMetadata(ICustomAttributeProvider annotated, Type objectClass)
{
if (CoderUtils.isAttributePresent <ASN1SequenceOf>(annotated))
{
typeMeta = new ASN1SequenceOfMetadata(CoderUtils.getAttribute <ASN1SequenceOf>(annotated),
objectClass,
annotated
);
}
else if (CoderUtils.isAttributePresent <ASN1Sequence>(annotated))
{
typeMeta = new ASN1SequenceMetadata(CoderUtils.getAttribute <ASN1Sequence>(annotated));
}
else if (CoderUtils.isAttributePresent <ASN1Choice>(annotated))
{
typeMeta = new ASN1ChoiceMetadata(CoderUtils.getAttribute <ASN1Choice>(annotated));
}
else if (CoderUtils.isAttributePresent <ASN1Enum>(annotated))
{
typeMeta = new ASN1EnumMetadata(CoderUtils.getAttribute <ASN1Enum>(annotated));
}
else if (CoderUtils.isAttributePresent <ASN1Boolean>(annotated))
{
typeMeta = new ASN1BooleanMetadata(CoderUtils.getAttribute <ASN1Boolean>(annotated));
}
else if (CoderUtils.isAttributePresent <ASN1Any>(annotated))
{
typeMeta = new ASN1AnyMetadata(CoderUtils.getAttribute <ASN1Any>(annotated));
}
else if (CoderUtils.isAttributePresent <ASN1Integer>(annotated))
{
typeMeta = new ASN1IntegerMetadata(CoderUtils.getAttribute <ASN1Integer>(annotated));
}
else if (CoderUtils.isAttributePresent <ASN1Real>(annotated))
{
typeMeta = new ASN1RealMetadata(CoderUtils.getAttribute <ASN1Real>(annotated));
}
else if (CoderUtils.isAttributePresent <ASN1OctetString>(annotated))
{
typeMeta = new ASN1OctetStringMetadata(CoderUtils.getAttribute <ASN1OctetString>(annotated));
}
else if (CoderUtils.isAttributePresent <ASN1BitString>(annotated) || objectClass.Equals(typeof(BitString)))
{
typeMeta = new ASN1BitStringMetadata(CoderUtils.getAttribute <ASN1BitString>(annotated));
}
else if (CoderUtils.isAttributePresent <ASN1ObjectIdentifier>(annotated) || objectClass.Equals(typeof(ObjectIdentifier)))
{
typeMeta = new ASN1ObjectIdentifierMetadata(CoderUtils.getAttribute <ASN1ObjectIdentifier>(annotated));
}
else if (CoderUtils.isAttributePresent <ASN1String>(annotated))
{
typeMeta = new ASN1StringMetadata(CoderUtils.getAttribute <ASN1String>(annotated));
}
else if (CoderUtils.isAttributePresent <ASN1Null>(annotated))
{
typeMeta = new ASN1NullMetadata(CoderUtils.getAttribute <ASN1Null>(annotated));
}
else if (CoderUtils.isAttributePresent <ASN1BoxedType>(annotated))
{
typeMeta = new ASN1BoxedTypeMetadata(objectClass, CoderUtils.getAttribute <ASN1BoxedType>(annotated));
}
else if (CoderUtils.isAttributePresent <ASN1Element>(annotated))
{
typeMeta = new ASN1ElementMetadata(CoderUtils.getAttribute <ASN1Element>(annotated));
}
else if (objectClass.Equals(typeof(String)))
{
typeMeta = new ASN1StringMetadata();
}
else if (objectClass.Equals(typeof(int)))
{
typeMeta = new ASN1IntegerMetadata();
}
else if (objectClass.Equals(typeof(long)))
{
typeMeta = new ASN1IntegerMetadata();
}
else if (objectClass.Equals(typeof(double)))
{
typeMeta = new ASN1RealMetadata();
}
else if (objectClass.Equals(typeof(bool)))
{
typeMeta = new ASN1BooleanMetadata();
}
else if (objectClass.Equals(typeof(byte[])))
{
typeMeta = new ASN1OctetStringMetadata();
}
if (CoderUtils.isAttributePresent <ASN1Element>(annotated))
{
asn1ElementInfo = new ASN1ElementMetadata(CoderUtils.getAttribute <ASN1Element>(annotated));
}
setupConstraint(annotated);
}
public T getAttribute <T>()
{
return(CoderUtils.getAttribute <T>(annotatedClass));
}
public bool isParentAttributePresent <T>()
{
return(CoderUtils.isAttributePresent <T>(parentAnnotatedClass));
}
public T getParentAttribute <T>()
{
return(CoderUtils.getAttribute <T>(parentAnnotatedClass));
}
public virtual DecodedObject <object> decodeSequence(DecodedObject <object> decodedTag, Type objectClass, ElementInfo elementInfo, Stream stream)
{
object sequence = createInstanceForElement(objectClass, elementInfo);
initDefaultValues(sequence);
DecodedObject <object> fieldTag = null;
int maxSeqLen = elementInfo.MaxAvailableLen;
int sizeOfSequence = 0;
if (maxSeqLen == -1 || maxSeqLen > 0)
{
fieldTag = decodeTag(stream);
if (fieldTag != null)
{
sizeOfSequence += fieldTag.Size;
}
}
PropertyInfo[] fields = elementInfo.getProperties(objectClass);
for (int i = 0; i < fields.Length; i++)
{
PropertyInfo field = fields[i];
DecodedObject <object> obj = decodeSequenceField(
fieldTag, sequence, i, field, stream, elementInfo, true
);
if (obj != null)
{
sizeOfSequence += obj.Size;
bool isAny = false;
if (i + 1 == fields.Length - 1)
{
ElementInfo info = new ElementInfo();
info.AnnotatedClass = (fields[i + 1]);
info.MaxAvailableLen = (elementInfo.MaxAvailableLen);
if (elementInfo.hasPreparedInfo())
{
info.PreparedInfo = (elementInfo.PreparedInfo.getPropertyMetadata(i + 1));
}
else
{
info.ASN1ElementInfo = CoderUtils.getAttribute <ASN1Element>(fields[i + 1]);
}
isAny = CoderUtils.isAnyField(fields[i + 1], info);
}
if (maxSeqLen != -1)
{
elementInfo.MaxAvailableLen = (maxSeqLen - sizeOfSequence);
}
if (!isAny)
{
if (i < fields.Length - 1)
{
if (maxSeqLen == -1 || elementInfo.MaxAvailableLen > 0)
{
fieldTag = decodeTag(stream);
if (fieldTag != null)
{
sizeOfSequence += fieldTag.Size;
}
else
{
break;
}
}
else
{
fieldTag = null;
}
}
}
}
;
}
return(new DecodedObject <object>(sequence, sizeOfSequence));
}
public virtual DecodedObject <object> decodeClassType(DecodedObject <object> decodedTag, Type objectClass, ElementInfo elementInfo, Stream stream)
{
if (CoderUtils.isImplements(objectClass, typeof(IASN1PreparedElement)))
{
return(decodePreparedElement(decodedTag, objectClass, elementInfo, stream));
}
else if (elementInfo.hasPreparedInfo())
{
return(elementInfo.PreparedInfo.TypeMetadata.decode(
this, decodedTag, objectClass, elementInfo, stream
));
}
else if (elementInfo.isAttributePresent <ASN1SequenceOf>())
{
return(decodeSequenceOf(decodedTag, objectClass, elementInfo, stream));
}
else if (elementInfo.isAttributePresent <ASN1Sequence>())
{
return(decodeSequence(decodedTag, objectClass, elementInfo, stream));
}
else if (elementInfo.isAttributePresent <ASN1Choice>())
{
return(decodeChoice(decodedTag, objectClass, elementInfo, stream));
}
else if (elementInfo.isAttributePresent <ASN1BoxedType>())
{
return(decodeBoxedType(decodedTag, objectClass, elementInfo, stream));
}
else if (elementInfo.isAttributePresent <ASN1Enum>())
{
return(decodeEnum(decodedTag, objectClass, elementInfo, stream));
}
else if (elementInfo.isAttributePresent <ASN1Boolean>())
{
return(decodeBoolean(decodedTag, objectClass, elementInfo, stream));
}
else if (elementInfo.isAttributePresent <ASN1Any>())
{
return(decodeAny(decodedTag, objectClass, elementInfo, stream));
}
else if (elementInfo.isAttributePresent <ASN1Integer>())
{
return(decodeInteger(decodedTag, objectClass, elementInfo, stream));
}
else if (elementInfo.isAttributePresent <ASN1Real>())
{
return(decodeReal(decodedTag, objectClass, elementInfo, stream));
}
else if (elementInfo.isAttributePresent <ASN1OctetString>())
{
return(decodeOctetString(decodedTag, objectClass, elementInfo, stream));
}
else if (elementInfo.isAttributePresent <ASN1BitString>() || elementInfo.AnnotatedClass.Equals(typeof(BitString)))
{
return(decodeBitString(decodedTag, objectClass, elementInfo, stream));
}
else if (elementInfo.isAttributePresent <ASN1ObjectIdentifier>() || elementInfo.AnnotatedClass.Equals(typeof(ObjectIdentifier)))
{
return(decodeObjectIdentifier(decodedTag, objectClass, elementInfo, stream));
}
else if (elementInfo.isAttributePresent <ASN1String>())
{
return(decodeString(decodedTag, objectClass, elementInfo, stream));
}
else if (elementInfo.isAttributePresent <ASN1Null>())
{
return(decodeNull(decodedTag, objectClass, elementInfo, stream));
}
else if (elementInfo.isAttributePresent <ASN1Element>())
{
return(decodeElement(decodedTag, objectClass, elementInfo, stream));
}
else
{
return(decodeCSElement(decodedTag, objectClass, elementInfo, stream));
}
}