From 9ff2b8d804a34941a6085af85b6749c20549240e Mon Sep 17 00:00:00 2001
From: Mason Reed <mason@vector35.com>
Date: Fri, 22 Nov 2024 18:16:32 -0500
Subject: Itanium RTTI scaffolding

---
 plugins/rtti/rtti.cpp | 112 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 112 insertions(+)
 create mode 100644 plugins/rtti/rtti.cpp

(limited to 'plugins/rtti/rtti.cpp')

diff --git a/plugins/rtti/rtti.cpp b/plugins/rtti/rtti.cpp
new file mode 100644
index 00000000..d99983ee
--- /dev/null
+++ b/plugins/rtti/rtti.cpp
@@ -0,0 +1,112 @@
+#include "rtti.h"
+
+using namespace BinaryNinja;
+using namespace BinaryNinja::RTTI;
+
+
+std::optional<std::string> RTTI::DemangleNameMS(BinaryView* view, bool allowMangled, const std::string &mangledName)
+{
+    QualifiedName demangledName = {};
+    Ref<Type> outType = {};
+    if (!DemangleMS(view->GetDefaultArchitecture(), mangledName, outType, demangledName, true))
+        return DemangleNameLLVM(allowMangled, mangledName);
+    return demangledName.GetString();
+}
+
+
+std::optional<std::string> RTTI::DemangleNameGNU3(BinaryView* view, bool allowMangled, const std::string &mangledName)
+{
+    QualifiedName demangledName = {};
+    Ref<Type> outType = {};
+    if (!DemangleGNU3(view->GetDefaultArchitecture(), mangledName, outType, demangledName, true))
+        return DemangleNameLLVM(allowMangled, mangledName);
+    return demangledName.GetString();
+}
+
+
+std::optional<std::string> RTTI::DemangleNameLLVM(bool allowMangled, const std::string &mangledName)
+{
+    QualifiedName demangledName = {};
+    Ref<Type> outType = {};
+    if (!DemangleLLVM(mangledName, demangledName, true))
+        return allowMangled ? std::optional(mangledName) : std::nullopt;
+    auto demangledNameStr = demangledName.GetString();
+    size_t beginFind = demangledNameStr.find_first_of(' ');
+    if (beginFind != std::string::npos)
+        demangledNameStr.erase(0, beginFind + 1);
+    size_t endFind = demangledNameStr.find(" `RTTI Type Descriptor Name'");
+    if (endFind != std::string::npos)
+        demangledNameStr.erase(endFind, demangledNameStr.length());
+    return demangledNameStr;
+}
+
+
+Ref<Metadata> ClassInfo::SerializedMetadata()
+{
+    std::map<std::string, Ref<Metadata> > classInfoMeta;
+    classInfoMeta["className"] = new Metadata(className);
+    if (baseClassName.has_value())
+        classInfoMeta["baseClassName"] = new Metadata(baseClassName.value());
+    if (classOffset.has_value())
+        classInfoMeta["classOffset"] = new Metadata(classOffset.value());
+    if (vft.has_value())
+        classInfoMeta["vft"] = vft->SerializedMetadata();
+    // NOTE: We omit baseVft as it can be resolved manually and just bloats the size.
+    return new Metadata(classInfoMeta);
+}
+
+
+ClassInfo ClassInfo::DeserializedMetadata(const Ref<Metadata> &metadata)
+{
+    std::map<std::string, Ref<Metadata> > classInfoMeta = metadata->GetKeyValueStore();
+    ClassInfo info = {classInfoMeta["className"]->GetString()};
+    if (classInfoMeta.find("baseClassName") != classInfoMeta.end())
+        info.baseClassName = classInfoMeta["baseClassName"]->GetString();
+    if (classInfoMeta.find("classOffset") != classInfoMeta.end())
+        info.classOffset = classInfoMeta["classOffset"]->GetUnsignedInteger();
+    if (classInfoMeta.find("vft") != classInfoMeta.end())
+        info.vft = VirtualFunctionTableInfo::DeserializedMetadata(classInfoMeta["vft"]);
+    return info;
+}
+
+
+Ref<Metadata> VirtualFunctionTableInfo::SerializedMetadata()
+{
+    std::vector<Ref<Metadata> > funcsMeta;
+    funcsMeta.reserve(virtualFunctions.size());
+    for (auto &vFunc: virtualFunctions)
+        funcsMeta.emplace_back(vFunc.SerializedMetadata());
+    std::map<std::string, Ref<Metadata> > vftMeta;
+    vftMeta["address"] = new Metadata(address);
+    vftMeta["functions"] = new Metadata(funcsMeta);
+    return new Metadata(vftMeta);
+}
+
+
+VirtualFunctionTableInfo VirtualFunctionTableInfo::DeserializedMetadata(const Ref<Metadata> &metadata)
+{
+    std::map<std::string, Ref<Metadata> > vftMeta = metadata->GetKeyValueStore();
+    VirtualFunctionTableInfo vftInfo = {vftMeta["address"]->GetUnsignedInteger()};
+    if (vftMeta.find("functions") != vftMeta.end())
+    {
+        for (auto &entry: vftMeta["functions"]->GetArray())
+            vftInfo.virtualFunctions.emplace_back(VirtualFunctionInfo::DeserializedMetadata(entry));
+    }
+    return vftInfo;
+}
+
+
+Ref<Metadata> VirtualFunctionInfo::SerializedMetadata()
+{
+    std::map<std::string, Ref<Metadata> > vFuncMeta;
+    vFuncMeta["address"] = new Metadata(funcAddr);
+    return new Metadata(vFuncMeta);
+}
+
+
+VirtualFunctionInfo VirtualFunctionInfo::DeserializedMetadata(const Ref<Metadata> &metadata)
+{
+    std::map<std::string, Ref<Metadata> > vFuncMeta = metadata->GetKeyValueStore();
+    VirtualFunctionInfo vFuncInfo = {vFuncMeta["address"]->GetUnsignedInteger()};
+    return vFuncInfo;
+}
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