private PacketValue[] GetOutgoingStructure(ASCode code, Local getLocal)
{
List <PacketValue> structure = new List <PacketValue>();
for (int i = 0; i < code.Count; i++)
{
ASInstruction instruction = code[i];
if (instruction == getLocal)
{
break;
}
if (!Local.IsGetLocal(instruction.OP))
{
continue;
}
Local local = (Local)instruction;
if (local.Register != getLocal.Register)
{
continue;
}
for (i += 1; i < code.Count; i++)
{
ASInstruction next = code[i];
if (next.OP != OPCode.CallPropVoid)
{
continue;
}
CallPropVoidIns callPropVoid = (CallPropVoidIns)next;
if (callPropVoid.PropertyName.Name != "push")
{
continue;
}
ASInstruction previous = code[i - 1];
if (previous.OP == OPCode.GetProperty)
{
ASClass classToCheck = Class;
GetPropertyIns getProperty = (GetPropertyIns)previous;
ASMultiname propertyName = getProperty.PropertyName;
ASInstruction beforeGetProp = code[i - 2];
if (beforeGetProp.OP == OPCode.GetLex)
{
GetLexIns getLex = (GetLexIns)beforeGetProp;
classToCheck = classToCheck.GetABC().GetClass(getLex.TypeName);
}
if (!TryGetPacketValue(propertyName, classToCheck, out PacketValue piece))
{
return(null);
}
structure.Add(piece);
}
}
}
return(structure.Count == 0 ? null : structure.ToArray());
}
private void LoadMessages()
{
ABCFile abc = ABCFiles.Last();
ASClass habboMessagesClass = abc.GetClass("HabboMessages");
if (habboMessagesClass == null)
{
IsPostShuffle = false;
foreach (ASClass @class in abc.Classes)
{
if (@class.Traits.Count != 2 || @class.Traits[0].Type?.Name != "Map" || @class.Traits[1].Type?.Name != "Map")
{
continue;
}
if (@class.Instance.Traits.Count != 2)
{
continue;
}
habboMessagesClass = @class;
break;
}
if (habboMessagesClass == null)
{
return;
}
}
ASCode code = habboMessagesClass.Constructor.Body.ParseCode();
int outMapTypeIndex = habboMessagesClass.Traits[1].QNameIndex;
ASInstruction[] instructions = code
.Where(i => i.OP == OPCode.GetLex ||
i.OP == OPCode.PushShort ||
i.OP == OPCode.PushByte).ToArray();
for (int i = 0; i < instructions.Length; i += 3)
{
GetLexIns getLexInst = instructions[i + 0] as GetLexIns;
bool isOutgoing = getLexInst?.TypeNameIndex == outMapTypeIndex;
Primitive primitive = instructions[i + 1] as Primitive;
ushort id = Convert.ToUInt16(primitive?.Value);
getLexInst = instructions[i + 2] as GetLexIns;
ASClass messageClass = abc.GetClass(getLexInst?.TypeName.Name);
HMessage message = new HMessage(id, isOutgoing, messageClass);
(isOutgoing ? OutMessages : InMessages).Add(id, message);
if (!_messages.ContainsKey(messageClass))
{
_messages.Add(messageClass, message);
}
}
}
private ASClass GetMessageParser()
{
ABCFile abc = Class.GetABC();
ASInstance instance = Class.Instance;
ASInstance superInstance = abc.GetInstance(instance.Super) ?? instance;
ASMethod parserGetterMethod = superInstance.GetGetter("parser")?.Method;
if (parserGetterMethod == null)
{
return(null);
}
IEnumerable <ASMethod> methods = instance.GetMethods();
foreach (ASMethod method in methods.Concat(new[] { instance.Constructor }))
{
ASCode code = method.Body.ParseCode();
foreach (ASInstruction instruction in code)
{
ASMultiname multiname;
if (instruction.OP == OPCode.FindPropStrict)
{
FindPropStrictIns findPropStrictIns = (FindPropStrictIns)instruction;
multiname = findPropStrictIns.PropertyName;
}
else if (instruction.OP == OPCode.GetLex)
{
GetLexIns getLexIns = (GetLexIns)instruction;
multiname = getLexIns.TypeName;
}
else
{
continue;
}
foreach (ASClass refClass in abc.GetClasses(multiname))
{
ASInstance refInstance = refClass.Instance;
if (refInstance.ContainsInterface(parserGetterMethod.ReturnType.Name))
{
return(refClass);
}
}
}
}
return(null);
}
private static void DumpIncoming(SortedDictionary <ushort, MessageItem> messages)
{
var packets = new List <PacketInfo>();
// Find info.
foreach (var(id, message) in messages)
{
var packet = new PacketInfo
{
Id = id,
Category = "Unknown",
Name = $"Unknown_{id}"
};
// First category attempt.
var package = message.Clazz.QName.Namespace.Name;
if (package.StartsWith("com.sulake.habbo.communication.messages.incoming"))
{
packet.Category = string.Join('.', package
.Replace("com.sulake.habbo.communication.messages.incoming.", string.Empty)
.Split('.')
.Select(x => x[0].ToString().ToUpper() + x.Substring(1))
);
}
// Parse constructor.
GetLexIns parserIns = null;
if (message.Clazz.Instance.Constructor.Parameters.Count == 1)
{
// Find parser inside constructor.
var code = message.Clazz.Instance.Constructor.Body.ParseCode();
var parser = (GetLexIns)code.First(x => x.OP == OPCode.GetLex);
parserIns = parser;
}
else if (message.Clazz.Instance.Constructor.Parameters.Count == 2)
{
// Attempt to find parser somewhere else.
var abc = message.Clazz.GetABC();
foreach (var instance in abc.Instances)
{
if (instance.Constructor?.Body == null)
{
continue;
}
var instCode = instance.Constructor.Body.ParseCode();
var instConstruct = instCode.FirstOrDefault(x => x.OP == OPCode.ConstructProp &&
((ConstructPropIns)x).PropertyName == message.Clazz.QName &&
((ConstructPropIns)x).ArgCount == 2);
if (instConstruct != null)
{
parserIns = (GetLexIns)instCode[instCode.IndexOf(instConstruct) - 1];
break;
}
}
}
else
{
throw new Exception($"Unknown parameters count {message.Clazz.Instance.Constructor.Parameters.Count}.");
}
if (parserIns != null)
{
var parserName = parserIns.TypeName.Name;
if (parserName.EndsWith("MessageParser"))
{
packet.Name = parserName.Substring(0, parserName.Length - 13);
}
else if (parserName.EndsWith("Parser"))
{
packet.Name = parserName.Substring(0, parserName.Length - 6);
}
// Might give a better result than previous category.
var parserPackage = parserIns.TypeName.Namespace.Name;
if (parserPackage.StartsWith("com.sulake.habbo.communication.messages.parser"))
{
packet.Category = string.Join('.', parserPackage
.Replace("com.sulake.habbo.communication.messages.parser.", string.Empty)
.Split('.')
.Select(x => x[0].ToString().ToUpper() + x.Substring(1))
);
}
}
packets.Add(packet);
}
// Print out.
Console.WriteLine("# INCOMING");
foreach (var packet in packets.OrderBy(x => x.Category).ThenBy(x => x.Name))
{
Console.WriteLine($"[{packet.Id,4}] {packet.Category} - {packet.Name}");
}
}
private PacketValue[] GetIncomingStructure(ASInstance instance, ASMethod method)
{
if (method.Body.Exceptions.Count > 0)
{
return(null);
}
ASCode code = method.Body.ParseCode();
if (code.JumpExits.Count > 0 || code.SwitchExits.Count > 0)
{
return(null);
}
List <PacketValue> structure = new List <PacketValue>();
ABCFile abc = method.GetABC();
for (int i = 0; i < code.Count; i++)
{
ASInstruction instruction = code[i];
if (instruction.OP != OPCode.GetLocal_1)
{
continue;
}
ASInstruction next = code[++i];
switch (next.OP)
{
case OPCode.CallProperty:
{
CallPropertyIns callProperty = (CallPropertyIns)next;
if (callProperty.ArgCount > 0)
{
ASMultiname propertyName = null;
ASInstruction previous = code[i - 2];
switch (previous.OP)
{
case OPCode.GetLex:
{
GetLexIns getLex = (GetLexIns)previous;
propertyName = getLex.TypeName;
break;
}
case OPCode.ConstructProp:
{
ConstructPropIns constructProp = (ConstructPropIns)previous;
propertyName = constructProp.PropertyName;
break;
}
case OPCode.GetLocal_0:
{
propertyName = instance.QName;
break;
}
}
ASInstance innerInstance = abc.GetInstance(propertyName);
ASMethod innerMethod = innerInstance.GetMethod(callProperty.PropertyName.Name, null, callProperty.ArgCount);
if (innerMethod == null)
{
ASClass innerClass = abc.GetClass(propertyName);
innerMethod = innerClass.GetMethod(callProperty.PropertyName.Name, null, callProperty.ArgCount);
}
PacketValue[] innerStructure = GetIncomingStructure(innerInstance, innerMethod);
if (innerStructure == null)
{
return(null);
}
structure.AddRange(innerStructure);
}
else
{
if (!TryGetPacketValue(callProperty.PropertyName, null, out PacketValue piece))
{
return(null);
}
structure.Add(piece);
}
break;
}
case OPCode.ConstructProp:
{
ConstructPropIns constructProp = (ConstructPropIns)next;
ASInstance innerInstance = abc.GetInstance(constructProp.PropertyName);
PacketValue[] innerStructure = GetIncomingStructure(innerInstance, innerInstance.Constructor);
if (innerStructure == null)
{
return(null);
}
structure.AddRange(innerStructure);
break;
}
case OPCode.ConstructSuper:
{
ASInstance superInstance = abc.GetInstance(instance.Super);
PacketValue[] innerStructure = GetIncomingStructure(superInstance, superInstance.Constructor);
if (innerStructure == null)
{
return(null);
}
structure.AddRange(innerStructure);
break;
}
case OPCode.CallSuper:
{
CallSuperIns callSuper = (CallSuperIns)next;
ASInstance superInstance = abc.GetInstance(instance.Super);
ASMethod superMethod = superInstance.GetMethod(callSuper.MethodName.Name, null, callSuper.ArgCount);
PacketValue[] innerStructure = GetIncomingStructure(superInstance, superMethod);
if (innerStructure == null)
{
return(null);
}
structure.AddRange(innerStructure);
break;
}
case OPCode.CallPropVoid:
{
CallPropVoidIns callPropVoid = (CallPropVoidIns)next;
if (callPropVoid.ArgCount != 0)
{
return(null);
}
if (!TryGetPacketValue(callPropVoid.PropertyName, null, out PacketValue piece))
{
return(null);
}
structure.Add(piece);
break;
}
default: return(null);
}
}
return(structure.Count == 0 ? null : structure.ToArray());
}
private List <HReference> FindMessageReferences(ASClass fromClass, ASContainer fromContainer, ASMethod fromMethod)
{
int instructionRank = 0;
ABCFile abc = fromMethod.GetABC();
Stack <ASMultiname> nameStack = new Stack <ASMultiname>();
List <HReference> references = new List <HReference>();
ASContainer container = null;
ASCode code = fromMethod.Body.ParseCode();
for (int i = 0; i < code.Count; i++)
{
ASInstruction instruction = code[i];
switch (instruction.OP)
{
default: continue;
case OPCode.NewFunction:
{
NewFunctionIns newFunction = (NewFunctionIns)instruction;
references.AddRange(FindMessageReferences(fromClass, fromContainer, newFunction.Method));
continue;
}
case OPCode.GetProperty:
{
GetPropertyIns getProperty = (GetPropertyIns)instruction;
nameStack.Push(getProperty.PropertyName);
continue;
}
case OPCode.GetLex:
{
GetLexIns getLex = (GetLexIns)instruction;
container = abc.GetClass(getLex.TypeName.Name);
continue;
}
case OPCode.GetLocal_0:
{
container = fromContainer;
continue;
}
case OPCode.ConstructProp:
{
ConstructPropIns constructProp = (ConstructPropIns)instruction;
nameStack.Push(constructProp.PropertyName);
break;
}
}
ASMultiname messageQName = nameStack.Pop();
if (string.IsNullOrWhiteSpace(messageQName.Name))
{
continue;
}
ASClass messageClass = abc.GetClass(messageQName.Name);
if (messageClass == null)
{
continue;
}
if (!_messages.TryGetValue(messageClass, out HMessage message))
{
continue;
}
if (message.References.Any(r => r.FromMethod == fromMethod))
{
continue;
}
HReference reference = new HReference();
message.References.Add(reference);
if (message.IsOutgoing)
{
reference.FromClass = fromClass;
reference.FromMethod = fromMethod;
reference.InstructionRank = ++instructionRank;
reference.IsAnonymous = (!fromMethod.IsConstructor && fromMethod.Trait == null);
references.Add(reference);
}
else
{
ASMultiname methodName = nameStack.Pop();
ASMethod callbackMethod = fromContainer.GetMethod(methodName.Name);
if (callbackMethod == null)
{
callbackMethod = container.GetMethod(methodName.Name);
if (callbackMethod == null)
{
ASMultiname slotName = nameStack.Pop();
ASTrait hostTrait = container.GetTraits(TraitKind.Slot)
.FirstOrDefault(st => st.QName == slotName);
container = abc.GetInstance(hostTrait.Type.Name);
callbackMethod = container.GetMethod(methodName.Name);
}
}
reference.FromMethod = callbackMethod;
}
}
return(references);
}
private PacketValue[] GetOutgoingStructure(ASCode code, ASInstruction beforeReturn, int length)
{
int getLocalEndIndex = -1;
int pushingEndIndex = code.IndexOf(beforeReturn);
PacketValue[] structure = new PacketValue[length];
Dictionary <int, int> pushedLocals = new Dictionary <int, int>();
for (int i = pushingEndIndex - 1; i >= 0; i--)
{
ASInstruction instruction = code[i];
if (instruction.OP == OPCode.GetProperty)
{
ASClass classToCheck = Class;
GetPropertyIns getProperty = (GetPropertyIns)instruction;
ASMultiname propertyName = getProperty.PropertyName;
ASInstruction previous = code[i - 1];
if (previous.OP == OPCode.GetLex)
{
GetLexIns getLex = (GetLexIns)previous;
classToCheck = classToCheck.GetABC().GetClass(getLex.TypeName);
}
if (!TryGetPacketValue(propertyName, classToCheck, out PacketValue piece))
{
return(null);
}
structure[--length] = piece;
}
else if (Local.IsGetLocal(instruction.OP) &&
instruction.OP != OPCode.GetLocal_0)
{
Local local = (Local)instruction;
pushedLocals.Add(local.Register, --length);
if (getLocalEndIndex == -1)
{
getLocalEndIndex = i;
}
}
if (length == 0)
{
break;
}
}
for (int i = getLocalEndIndex - 1; i >= 0; i--)
{
ASInstruction instruction = code[i];
if (!Local.IsSetLocal(instruction.OP))
{
continue;
}
Local local = (Local)instruction;
if (pushedLocals.TryGetValue(local.Register, out int structIndex))
{
ASInstruction beforeSet = code[i - 1];
pushedLocals.Remove(local.Register);
switch (beforeSet.OP)
{
case OPCode.PushInt:
case OPCode.PushByte:
case OPCode.Convert_i:
structure[structIndex] = PacketValue.Integer;
break;
case OPCode.Coerce_s:
case OPCode.PushString:
structure[structIndex] = PacketValue.String;
break;
case OPCode.PushTrue:
case OPCode.PushFalse:
structure[structIndex] = PacketValue.Boolean;
break;
default:
throw new Exception($"Don't know what this value type is, tell someone about this please.\r\nOP: {beforeSet.OP}");
}
}
if (pushedLocals.Count == 0)
{
break;
}
}
return(structure);
}
private PacketValue[] GetOutgoingStructure(ASClass @class, ASMultiname propertyName)
{
ASMethod constructor = @class.Instance.Constructor;
if (constructor.Body.Exceptions.Count > 0)
{
return(null);
}
ASCode code = constructor.Body.ParseCode();
if (code.JumpExits.Count > 0 || code.SwitchExits.Count > 0)
{
return(null);
}
List <PacketValue> structure = new List <PacketValue>();
for (int i = 0; i < code.Count; i++)
{
ASInstruction instruction = code[i];
if (instruction.OP == OPCode.NewArray)
{
NewArrayIns newArray = (NewArrayIns)instruction;
if (newArray.ArgCount > 0)
{
PacketValue[] structurePieces = new PacketValue[newArray.ArgCount];
for (int j = i - 1, length = newArray.ArgCount; j >= 0; j--)
{
ASInstruction previous = code[j];
if (Local.IsGetLocal(previous.OP) && previous.OP != OPCode.GetLocal_0)
{
Local local = (Local)previous;
ASParameter parameter = constructor.Parameters[local.Register - 1];
if (!TryGetPacketValue(parameter.Type, null, out PacketValue piece))
{
return(null);
}
structurePieces[--length] = piece;
}
if (length == 0)
{
structure.AddRange(structurePieces);
break;
}
}
}
}
else if (instruction.OP == OPCode.ConstructSuper)
{
ConstructSuperIns constructSuper = (ConstructSuperIns)instruction;
if (constructSuper.ArgCount > 0)
{
ASClass superClass = @class.GetABC().GetClass(@class.Instance.Super);
structure.AddRange(GetOutgoingStructure(superClass, propertyName));
}
}
if (instruction.OP != OPCode.GetProperty)
{
continue;
}
GetPropertyIns getProperty = (GetPropertyIns)instruction;
if (getProperty.PropertyName != propertyName)
{
continue;
}
ASInstruction next = code[++i];
ASClass classToCheck = @class;
if (Local.IsGetLocal(next.OP))
{
if (next.OP == OPCode.GetLocal_0)
{
continue;
}
Local local = (Local)next;
ASParameter parameter = constructor.Parameters[local.Register - 1];
if (!TryGetPacketValue(parameter.Type, null, out PacketValue piece))
{
return(null);
}
structure.Add(piece);
}
else
{
if (next.OP == OPCode.FindPropStrict)
{
classToCheck = null;
}
else if (next.OP == OPCode.GetLex)
{
GetLexIns getLex = (GetLexIns)next;
classToCheck = classToCheck.GetABC().GetClass(getLex.TypeName);
}
do
{
next = code[++i];
propertyName = null;
if (next.OP == OPCode.GetProperty)
{
getProperty = (GetPropertyIns)next;
propertyName = getProperty.PropertyName;
}
else if (next.OP == OPCode.CallProperty)
{
CallPropertyIns callProperty = (CallPropertyIns)next;
propertyName = callProperty.PropertyName;
}
}while (next.OP != OPCode.GetProperty && next.OP != OPCode.CallProperty);
if (!TryGetPacketValue(propertyName, classToCheck, out PacketValue piece))
{
return(null);
}
structure.Add(piece);
}
}
return(structure.Count == 0 ? null : structure.ToArray());
}
