private void InspectAssembly(HtmlWriter writer, Assembly asm)
{
using (writer.Tag("small")) {
DomainLink(writer);
}
writer.Inline("h5", asm.Name);
using (writer.ContainerFluid())
{
var namespaces = asm.Namespaces.Where(s => s.Name.Length > 0).ToList();
if (namespaces.Count > 0)
{
using (writer.ContainerFluid())
using (writer.Tag("code"))
{
writer.Inline("h6", "// namespaces");
MakeCodeList(
writer,
namespaces.OrderBy(n => n.Name),
n =>
{
writer.Write("namespace ");
NamespaceLink(writer, n, n.RelativeName);
});
}
}
var unnamed = asm.FindNamespace("");
if (unnamed != null)
{
using (writer.ContainerFluid())
using (writer.Tag("code"))
{
writer.Inline("h6", "// Root namespace");
WriteNamespaceMembers(writer, unnamed);
}
}
}
}
private void LayoutInstanceProperties(HtmlWriter writer, Type type)
{
var instanceProperties = type.GetProperties(k_AllInstanceBindings);
if (instanceProperties.Length == 0)
{
return;
}
Array.Sort(instanceProperties, (lhs, rhs) => ReflectionHelper.CompareProperties(type, lhs, rhs));
int split = instanceProperties.Length;
for (int i = 0; i < instanceProperties.Length; i++)
{
if (instanceProperties[i].DeclaringType != type)
{
split = i;
break;
}
}
if (split > 0)
{
using (writer.ContainerFluid())
{
writer.Inline("h6", "// Instance properties");
LayoutProperties(writer, ArrayView(instanceProperties, 0, split));
}
}
if (split < instanceProperties.Length)
{
using (writer.ContainerFluid())
{
writer.Inline("h6", "// Inherited properties");
LayoutProperties(writer, ArrayView(instanceProperties, split));
}
}
}
private void LayoutInstanceMethods(HtmlWriter writer, Type type)
{
var instanceMethods = type.GetMethods(k_AllInstanceBindings);
if (instanceMethods.Length == 0)
{
return;
}
Array.Sort(instanceMethods, (lhs, rhs) => ReflectionHelper.CompareMethods(type, lhs, rhs));
int split = instanceMethods.Length;
for (int i = 0; i < instanceMethods.Length; i++)
{
if (instanceMethods[i].DeclaringType != type)
{
split = i;
break;
}
}
if (split > 0)
{
using (writer.ContainerFluid())
{
writer.Inline("h6", "// Instance methods");
LayoutMethods(writer, ArrayView(instanceMethods, 0, split).Where(m => !m.IsSpecialName));
}
}
if (split < instanceMethods.Length)
{
using (writer.ContainerFluid())
{
writer.Inline("h6", "// Inherited methods");
LayoutMethods(writer, ArrayView(instanceMethods, split).Where(m => !m.IsSpecialName));
}
}
}
private void InspectCtor(HtmlWriter writer, Assembly assembly, Type type, ConstructorInfo ctor)
{
LayoutMethodHeader(writer, assembly, type, ctor);
using (writer.Tag("code"))
using (writer.Tag("h5"))
{
WriteCtorPrefix(writer, ctor);
writer.Write(" ");
WriteCtorDeclaration(writer, ctor);
}
using (writer.ContainerFluid())
WriteDissassembly(writer, ctor);
}
private void InspectMethod(HtmlWriter writer, Assembly assembly, Type type, MethodInfo method)
{
LayoutMethodHeader(writer, assembly, type, method);
using (writer.Tag("code"))
using (writer.Tag("h5"))
{
WriteMethodPrefix(writer, method);
writer.Write(" ");
WriteMethodReturnType(writer, method);
writer.Write(" ");
WriteMethodDeclaration(writer, method);
}
using (writer.ContainerFluid())
WriteDissassembly(writer, method);
}
void WriteNamespaceMembers(HtmlWriter writer, Namespace ns)
{
using (writer.Tag("code"))
{
foreach (var group in ns.Types.Where(t => t.DeclaringType == null).GroupBy(t => TypeKinds.Classify(t)).OrderBy(group => group.Key))
{
using (writer.ContainerFluid())
{
writer.Inline("h6", "// " + group.Key.KindName());
MakeCodeList(
writer,
group.OrderBy(t => t.Name),
t => WriteInlineAttributes(writer, t.GetCustomAttributes(false)),
t => WriteShortTypeDeclaration(writer, t)
);
}
}
}
}
private void LayoutNestedTypes(HtmlWriter writer, Type type)
{
var nested = type.GetNestedTypes(BindingFlags.Public | BindingFlags.NonPublic);
if (nested.Length == 0)
{
return;
}
using (writer.ContainerFluid())
{
writer.Inline("h6", "// Nested types");
MakeCodeList(
writer,
nested,
t => WriteInlineAttributes(writer, t.GetCustomAttributes(false)),
t => WriteTypeDeclaration(writer, t)
);
}
}
void InspectDomain(HtmlWriter writer)
{
writer.Inline("h5", AppDomain.CurrentDomain.FriendlyName);
var assemblies = m_Explorer.Assemblies.ToArray();
Array.Sort(assemblies, (lhs, rhs) => lhs.FullName.CompareTo(rhs.FullName));
if (assemblies.Length > 0)
{
using (writer.ContainerFluid())
using (writer.Tag("code"))
{
writer.Inline("h6", "// assemblies");
MakeCodeList(
writer,
assemblies,
a => AssemblyLink(writer, a),
a => writer.Write(" // " + a.FullName)
);
}
}
}
private void InspectNamespace(HtmlWriter writer, Namespace ns)
{
using (writer.Tag("small"))
{
DomainLink(writer);
writer.Write(" | ");
AssemblyLink(writer, ns.Assembly);
}
using (writer.ContainerFluid())
{
using (writer.Tag("code"))
using (writer.Tag("h5"))
{
writer.Write("namespace ");
NamespaceLink(writer, ns, ns.PrettyName);
}
WriteNamespaceMembers(writer, ns);
}
}
void ExecuteLookup(HtmlWriter writer, HttpListenerRequest request)
{
const string addresses = nameof(addresses);
using (writer.Tag("form", "action", CommandUrl("lookup"), "method", "post"))
using (writer.ContainerFluid())
using (writer.Tag("div", "class", "form-group"))
{
writer.Inline("h2", "Paste addresses to look up (hex)");
writer.Tag("textarea", "class", "form-control", "name", addresses, "rows", "10").Dispose();
writer.Break();
writer.InlineTag("input", "type", "submit", "value", "Submit");
}
NameValueCollection postValues;
using (StreamReader reader = new StreamReader(request.InputStream, request.ContentEncoding))
postValues = System.Web.HttpUtility.ParseQueryString(reader.ReadToEnd());
if (postValues[addresses] != null)
{
var modules = Process.GetCurrentProcess().Modules;
string FindModule(long address)
{
for (int i = 0; i < modules.Count; i++)
{
var m = modules[i];
long baseAddress = m.BaseAddress.ToInt64();
if (baseAddress <= address && address < baseAddress + m.ModuleMemorySize)
{
return(modules[i].ModuleName);
}
}
return("unknown module");
}
using (writer.ContainerFluid())
{
writer.Inline("h4", "Results");
var lines = postValues[addresses].Split(new[] { '\n' }, StringSplitOptions.RemoveEmptyEntries);
using (writer.Tag("textarea", "class", "form-control", "rows", "10"))
{
foreach (var line in lines)
{
writer.Write(line);
writer.Write(", ");
int start = line.IndexOf("0x");
if (start >= 0)
{
int end = line.IndexOf(',', start);
if (end < 0)
{
end = line.Length;
}
var numberString = line.Substring(start + 2, end - start - 2);
if (long.TryParse(numberString, NumberStyles.HexNumber, CultureInfo.InvariantCulture, out long address))
{
var jitInfo = Mono.GetJitInfo(new IntPtr(address));
if (jitInfo.Method == null)
{
writer.Write("unknown method");
}
else if (jitInfo.Method is MethodInfo m)
{
WriteTypeName(writer, m.DeclaringType, true);
writer.Write(".");
WriteMethodDeclaration(writer, m, true);
}
else if (jitInfo.Method is ConstructorInfo c)
{
WriteCtorDeclaration(writer, c, true);
}
writer.Write(", ");
writer.Write(FindModule(address));
}
else
{
writer.Write("failed to parse " + numberString + ",");
}
}
else
{
writer.Write("failed to parse,");
}
writer.Write("\n");
}
}
}
}
}
void HandleRequest(HttpListenerContext ctxt)
{
// decode command
string url = ctxt.Request.RawUrl;
int commandStart = url.IndexOf('/', 1) + 1;
string command = null;
if (commandStart != -1)
{
int commandEnd = url.IndexOf('?', commandStart);
if (commandEnd == -1)
{
commandEnd = url.Length;
}
command = url.Substring(commandStart, commandEnd - commandStart);
}
if (string.IsNullOrEmpty(command))
{
command = "inspect";
}
using (MemoryStream stream = new MemoryStream())
{
var sw = new StreamWriter(stream, new UTF8Encoding(false));
sw.WriteLine("<!doctype html>");
var writer = new HtmlWriter(sw);
using (writer.Tag("html", "lang", "en"))
{
using (writer.Tag("head"))
{
WriteHeaderContent(sw, "ASM Explorer");
}
using (writer.Tag("body"))
using (writer.ContainerFluid())
{
switch (command)
{
case "inspect":
{
ExecuteInspect(writer, ctxt.Request.QueryString);
break;
}
case "lookup":
{
ExecuteLookup(writer, ctxt.Request);
break;
}
default:
{
writer.Write($"Invalid command \"{command}\" in {url}");
break;
}
}
}
sw.WriteLine();
}
sw.Flush();
ctxt.Response.ContentLength64 = stream.Length;
stream.Position = 0;
stream.WriteTo(ctxt.Response.OutputStream);
}
ctxt.Response.OutputStream.Close();
}
private void WriteDissassembly(HtmlWriter writer, MethodBase method)
{
if (method.IsAbstract || method.ContainsGenericParameters)
{
writer.Write("Cannot display disassembly for generic or abstract methods.");
return;
}
var context = new MethodContext()
{
DebugEnabled = MonoDebug.IsEnabled
};
var jitInfo = Mono.GetJitInfo(method);
using (writer.ContainerFluid())
{
writer.Write("Address: ");
writer.Write(jitInfo.CodeStart.ToString("X16"));
writer.Break();
writer.Write("Code Size in Bytes: ");
writer.Write(jitInfo.CodeSize.ToString());
writer.Break();
writer.Write("Debug mode: ");
writer.Write(context.DebugEnabled ? "enabled" : "disabled");
writer.Break();
}
if (jitInfo.CodeSize <= 0)
{
return;
}
using (writer.Tag("pre"))
{
using (writer.Tag("code"))
{
// some special help for calls using R11 and nops
int nops = 0;
bool first = true;
lock (_disassemblerLock)
{
foreach (var inst in GetInstructions(jitInfo))
{
context.HasLineNote = false;
if (first)
{
context.HasBasePointer =
inst.Mnemonic == ud_mnemonic_code.UD_Ipush &&
inst.Operands[0].Type == ud_type.UD_OP_REG &&
inst.Operands[0].Base == ud_type.UD_R_RBP;
first = false;
}
// abbreviate excessive nopping
if (inst.Mnemonic == ud_mnemonic_code.UD_Inop)
{
nops++;
context.LastInstruction = inst;
continue;
}
if (nops > 0)
{
if (nops == 1)
{
writer.Write(context.LastInstruction.ToString());
}
else
{
var str = context.LastInstruction.ToString();
writer.Write(str);
context.LineLength = str.Length;
StartNote(writer, ref context);
writer.Write("repeated nops (");
writer.Write(nops.ToString());
writer.Write(" bytes)");
}
nops = 0;
context.HasLineNote = false;
writer.Write("\n");
}
using (writer.Tag("span", "id", "X" + Address(inst).ToString("X16")))
{
var str = inst.ToString();
context.LineLength = str.Length;
writer.Write(str);
if (inst.Mnemonic == ud_mnemonic_code.UD_Imov)
{
var op0 = inst.Operands[0];
var op1 = inst.Operands[1];
// call targets on x64 are frequently placed in R11, so let's ensure that we catch that.
if (IsR11(op0))
{
context.R11 = op1;
}
if (context.DebugEnabled)
{
if (IsLocalStore(inst) && IsR11(op1) && context.R11 != null && context.R11.Type == ud_type.UD_OP_IMM)
{
if (context.BreakpointTrampolineOffset == 0)
{
context.BreakpointTrampolineOffset = op0.Value;
StartNote(writer, ref context);
writer.Write("write breakpoint trampoline");
}
else if (context.SinglestepTrampolineOffset == 0)
{
context.SinglestepTrampolineOffset = op0.Value;
StartNote(writer, ref context);
writer.Write("write singlestep trampoline");
}
}
else if (IsReadSinglestepTrampoline(inst))
{
StartNote(writer, ref context);
writer.Write("read singlestep trampoline");
}
else if (IsReadBreakpointTrampoline(inst))
{
StartNote(writer, ref context);
writer.Write("read breakpoint trampoline");
}
}
}
else if (inst.Mnemonic == ud_mnemonic_code.UD_Iadd)
{
var op1 = inst.Operands[1];
if (op1.Type == ud_type.UD_OP_IMM)
{
StartNote(writer, ref context);
writer.Write(op1.Value.ToString());
}
}
else if (inst.Mnemonic == ud_mnemonic_code.UD_Icall)
{
WriteCallInstruction(writer, inst, ref context);
context.R11 = null;
}
else if (IsJump(inst.Mnemonic))
{
WriteJumpInstruction(writer, inst, ref context);
}
}
writer.Write("\n");
context.LastInstruction = inst;
}
}
}
}
bool IsR11(Operand op) => op.Type == ud_type.UD_OP_REG && op.Base == ud_type.UD_R_R11;
bool IsReadSinglestepTrampoline(Instruction inst) => IsLocalLoadOffset(inst, context.SinglestepTrampolineOffset);
bool IsReadBreakpointTrampoline(Instruction inst) => IsLocalLoadOffset(inst, context.BreakpointTrampolineOffset);
ud_type StackFrameRegister() => context.HasBasePointer ? ud_type.UD_R_RBP : ud_type.UD_R_RSP;
bool IsLocalInteraction(Instruction inst, int operand)
{
if (inst.Mnemonic != ud_mnemonic_code.UD_Imov)
{
return(false);
}
var op = inst.Operands[operand];
return(op.Type == ud_type.UD_OP_MEM && op.Base == StackFrameRegister());
}
bool IsLocalStore(Instruction inst) => IsLocalInteraction(inst, 0);
bool IsLocalLoad(Instruction inst) => IsLocalInteraction(inst, 1);
bool IsLocalLoadOffset(Instruction inst, long offset) => IsLocalLoad(inst) && inst.Operands[1].Value == offset;
}
private void InspectType(HtmlWriter writer, Assembly assembly, Type type)
{
var asm = assembly;
var ns = asm.FindNamespace(type.Namespace);
using (writer.Tag("small"))
{
DomainLink(writer);
writer.Write(" | ");
AssemblyLink(writer, asm);
writer.Write(" | ");
NamespaceLink(writer, ns, type.Namespace ?? "<root>");
// see whether this is a nested type
if (type.DeclaringType != null)
{
writer.Write(" | ");
TypeLink(writer, type.DeclaringType);
}
}
using (writer.ContainerFluid())
using (writer.Tag("code"))
{
writer.Write("namespace ");
NamespaceLink(writer, ns, string.IsNullOrEmpty(ns.FullName) ? "<root>" : ns.FullName);
HtmlWriter.TagHandle outerClass = default;
if (type.DeclaringType != null)
{
outerClass = writer.ContainerFluid();
WriteTypeDeclaration(writer, type.DeclaringType);
}
using (writer.ContainerFluid())
{
var attr = type.GetCustomAttributes(false);
if (attr.Length > 0)
{
WriteAttributes(writer, attr);
}
using (writer.Tag("h5"))
WriteTypeDeclaration(writer, type);
if (type.IsGenericType && type.GenericTypeArguments.Length != 0)
{
writer.Break();
writer.Write("// instance of generic definition ");
TypeLink(writer, type.GetGenericTypeDefinition(), type.Name);
}
if (type.IsClass || type.IsValueType)
{
InspectClass(writer, type);
}
else if (type.IsInterface)
{
InspectInterface(writer, type);
}
else if (type.IsEnum)
{
InspectEnum(writer, type);
}
}
outerClass.Dispose();
}
}
private void InspectClass(HtmlWriter writer, Type type)
{
var instanceCtors = type.GetConstructors(k_AllInstanceBindings);
Array.Sort(instanceCtors, (lhs, rhs) => ReflectionHelper.CompareConstructors(type, lhs, rhs));
if (instanceCtors.Length > 0)
{
using (writer.ContainerFluid())
{
writer.Inline("h6", "// Constructors");
LayoutCtors(writer, instanceCtors);
}
}
var staticCtor = type.GetConstructors(k_AllStaticBindings);
if (staticCtor.Length > 0)
{
Array.Sort(staticCtor, (lhs, rhs) => ReflectionHelper.CompareConstructors(type, lhs, rhs));
using (writer.ContainerFluid())
{
writer.Inline("h6", "// Static constructors");
LayoutCtors(writer, staticCtor);
}
}
LayoutInstanceFields(writer, type);
var staticFields = type.GetFields(k_AllStaticBindings);
if (staticFields.Length > 0)
{
Array.Sort(staticFields, (lhs, rhs) => ReflectionHelper.CompareFields(type, lhs, rhs));
using (writer.ContainerFluid())
{
writer.Inline("h6", "// Static fields");
LayoutStaticFields(writer, staticFields);
}
}
LayoutInstanceProperties(writer, type);
var staticProperties = type.GetProperties(k_AllStaticBindings);
if (staticProperties.Length > 0)
{
Array.Sort(staticProperties, (lhs, rhs) => ReflectionHelper.CompareProperties(type, lhs, rhs));
using (writer.ContainerFluid())
{
writer.Inline("h6", "Static properties");
LayoutProperties(writer, staticProperties);
}
}
LayoutInstanceMethods(writer, type);
var staticMethods = type.GetMethods(k_AllStaticBindings);
if (staticMethods.Length > 0)
{
Array.Sort(staticMethods, (lhs, rhs) => ReflectionHelper.CompareMethods(type, lhs, rhs));
using (writer.ContainerFluid())
{
writer.Inline("h6", "// Static functions");
LayoutMethods(writer, staticMethods.Where(m => !m.IsSpecialName));
}
}
LayoutNestedTypes(writer, type);
}
