protected void FindHabboMessageClasses(ASClass habboMessageClass)
{
if (habboMessageClass == null)
{
throw new NullReferenceException(nameof(habboMessageClass));
}
if (OutgoingMessages != null && IncomingMessages != null)
{
return;
}
ABCFile abc = habboMessageClass.ABC;
if (habboMessageClass.Traits.Count < 2)
{
return;
}
int incomingMapTypeIndex = habboMessageClass.Traits[0].NameIndex;
int outgoingMapTypeIndex = habboMessageClass.Traits[1].NameIndex;
var outgoingClasses = new Dictionary <ushort, ASClass>();
var incomingClasses = new Dictionary <ushort, ASClass>();
ASMethod constructor = habboMessageClass.Constructor;
using (var inCode = new FlashReader(constructor.Body.Bytecode))
{
while (inCode.IsDataAvailable)
{
object[] values = inCode.ReadValuesUntil(OPCode.GetLex);
if (values == null)
{
break;
}
// Check if the instruction is referencing one of the in/out map types.
int getLexTypeIndex = (int)values[0];
bool isOutgoing = (getLexTypeIndex == outgoingMapTypeIndex);
if (!isOutgoing && getLexTypeIndex != incomingMapTypeIndex)
{
continue;
}
OPCode op = 0;
values = inCode.ReadValuesUntilEither(out op, OPCode.PushByte, OPCode.PushShort);
if (values == null)
{
return;
}
var header = Convert.ToUInt16(values[0]);
values = inCode.ReadValuesUntil(OPCode.GetLex);
if (values == null)
{
return;
}
getLexTypeIndex = (int)values[0];
ASMultiname messageType = abc.Constants.Multinames[getLexTypeIndex];
ASClass messageClass = abc.FindFirstClassByName(messageType.Name);
Dictionary <ushort, ASClass> messageClasses =
(isOutgoing ? outgoingClasses : incomingClasses);
messageClasses[header] = messageClass;
_isMessageOutgoing[messageClass] = isOutgoing;
}
}
#region Organize Outgoing Message Dictionaries
IOrderedEnumerable <KeyValuePair <ushort, ASClass> > orderedOutgoing =
outgoingClasses.OrderBy(kvp => kvp.Key);
_outgoingHeaders = orderedOutgoing
.ToDictionary(kvp => kvp.Value, kvp => kvp.Key);
OutgoingMessages = new ReadOnlyDictionary <ushort, ASClass>(
orderedOutgoing.ToDictionary(kvp => kvp.Key, kvp => kvp.Value));
#endregion
#region Organize Incoming Message Dictionaries
IOrderedEnumerable <KeyValuePair <ushort, ASClass> > orderedIncoming =
incomingClasses.OrderBy(kvp => kvp.Key);
_incomingHeaders = orderedIncoming
.ToDictionary(kvp => kvp.Value, kvp => kvp.Key);
IncomingMessages = new ReadOnlyDictionary <ushort, ASClass>(
orderedIncoming.ToDictionary(kvp => kvp.Key, kvp => kvp.Value));
#endregion
}
/// <summary>
/// Returns the Incoming message's parser class.
/// </summary>
/// <param name="messageClass">The Incoming message class to extract the parser class from.</param>
/// <returns></returns>
public ASClass GetIncomingMessageParser(ASClass messageClass)
{
if (_messageParsers.ContainsKey(messageClass))
{
return(_messageParsers[messageClass]);
}
ABCFile abc = messageClass.ABC;
ASClass incomingMsgParserClass = null;
ASInstance incomingMsgInstance = messageClass.Instance;
try
{
ASInstance incomingMsgSuperInstance = abc.FindFirstInstanceByName(
incomingMsgInstance.SuperType.Name);
ASMultiname parserReturnType = incomingMsgSuperInstance
.FindFirstGetter("parser", null).ReturnType;
List <ASMethod> methods =
incomingMsgInstance.FindMethodGetterSetterTraits()
.Select(mgsTrait => mgsTrait.Method).ToList();
methods.Add(incomingMsgInstance.Constructor);
foreach (ASMethod method in methods)
{
var referencedClasses = new List <ASClass>();
using (var inCode = new FlashReader(method.Body.Bytecode))
{
while (inCode.IsDataAvailable)
{
OPCode op = 0;
object[] values = inCode.ReadValuesUntilEither(out op, OPCode.FindPropStrict, OPCode.GetLex);
if (values == null)
{
break;
}
var typeIndex = (int)values[0];
ASMultiname type = abc.Constants.Multinames[typeIndex];
List <ASClass> instances = abc.FindClassesByName(type.Name);
referencedClasses.AddRange(instances);
}
}
foreach (ASClass referencedClass in referencedClasses)
{
ASInstance referencedInstance = referencedClass.Instance;
if (referencedInstance.ContainsInterface(parserReturnType.Name))
{
incomingMsgParserClass = referencedClass;
return(incomingMsgParserClass);
}
}
}
}
finally
{
if (incomingMsgParserClass != null)
{
_messageParsers[messageClass] =
incomingMsgParserClass;
}
}
return(incomingMsgParserClass);
}
