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#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 = {};
std::string adjustedMangledName = mangledName;
// For some reason some of the names that start with ZN are not prefixed by `_`.
if (adjustedMangledName.find("ZN") == 0)
adjustedMangledName = "_" + adjustedMangledName;
// Sometimes some std types will have a * prefixed, IDK what it means, but we need to remove it to demangle.
if (adjustedMangledName.find("*N") == 0)
adjustedMangledName = adjustedMangledName.substr(1);
// All types at this point should have a _Z prefix, if not, we likely need to just call the demangler directly, as this
// function is specific to dealing with mangled _type_ names.
if (adjustedMangledName.find("_Z") != 0)
adjustedMangledName = "_Z" + adjustedMangledName;
if (!DemangleGNU3(view->GetDefaultArchitecture(), adjustedMangledName, outType, demangledName, true))
return allowMangled ? std::optional(mangledName) : std::nullopt;
// Because we might have a generic name such as "PackageListGui::PackageListGui" returned, we must attempt to
// stringify the returned type IF its function type and then append that to the end of the demangled name.
// REAL: PackageListGui::PackageListGui(Filesystem::Path&&, PackageListGui::UnderSubheader, bool)::$_1[0x0]
// MANGLED: ZN14PackageListGuiC1EON10Filesystem4PathENS_14UnderSubheaderEbE3$_1
// GENERIC DEMANGLED: PackageListGui::PackageListGui
// UPDATED DEMANGLED: PackageListGui::PackageListGui(Filesystem::Path&&, PackageListGui::UnderSubheader, bool)
if (outType && outType->IsFunction())
demangledName.push_back(outType->GetStringAfterName(view->GetDefaultPlatform()));
return demangledName.GetString();
}
std::string RemoveItaniumPrefix(std::string &name)
{
// Remove numerical prefixes.
while (!name.empty() && std::isdigit(name[0]))
name = name.substr(1);
return name;
}
std::optional<std::string> RTTI::DemangleNameItanium(BinaryView* view, bool allowMangled, const std::string &mangledName)
{
// NOTE: Passing false to allowMangled to fallthrough to GNU3 demangler.
if (auto demangledName = DemangleNameLLVM(false, mangledName))
return RemoveItaniumPrefix(demangledName.value());
if (auto demangledName = DemangleNameGNU3(view, allowMangled, mangledName))
return RemoveItaniumPrefix(demangledName.value());
return std::nullopt;
}
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> BaseClassInfo::SerializedMetadata() const
{
std::map<std::string, Ref<Metadata>> baseClassMeta;
baseClassMeta["className"] = new Metadata(className);
baseClassMeta["classOffset"] = new Metadata(offset);
// NOTE: We omit base vft functions as it can be resolved manually and just bloats the size.
if (vft.has_value())
baseClassMeta["vft"] = vft->SerializedMetadata(false);
return new Metadata(baseClassMeta);
}
BaseClassInfo BaseClassInfo::DeserializedMetadata(const Ref<Metadata> &metadata)
{
std::map<std::string, Ref<Metadata>> baseClassMeta = metadata->GetKeyValueStore();
std::string className = baseClassMeta["className"]->GetString();
uint64_t offset = baseClassMeta["classOffset"]->GetUnsignedInteger();
BaseClassInfo baseClassInfo = {className, offset};
if (baseClassMeta.find("vft") != baseClassMeta.end())
baseClassInfo.vft = VirtualFunctionTableInfo::DeserializedMetadata(baseClassMeta["vft"]);
return baseClassInfo;
}
Ref<Metadata> ClassInfo::SerializedMetadata() const
{
std::map<std::string, Ref<Metadata>> classInfoMeta;
classInfoMeta["processor"] = new Metadata(static_cast<uint64_t>(processor));
classInfoMeta["className"] = new Metadata(className);
if (!baseClasses.empty())
{
std::vector<Ref<Metadata> > basesMeta;
basesMeta.reserve(baseClasses.size());
for (const auto& baseClass : baseClasses)
basesMeta.emplace_back(baseClass.SerializedMetadata());
classInfoMeta["bases"] = new Metadata(basesMeta);
}
if (vft.has_value())
classInfoMeta["vft"] = vft->SerializedMetadata();
return new Metadata(classInfoMeta);
}
ClassInfo ClassInfo::DeserializedMetadata(const Ref<Metadata> &metadata)
{
std::map<std::string, Ref<Metadata>> classInfoMeta = metadata->GetKeyValueStore();
std::string className = classInfoMeta["className"]->GetString();
RTTIProcessorType processor = static_cast<RTTIProcessorType>(classInfoMeta["processor"]->GetUnsignedInteger());
ClassInfo info = {processor, className};
if (classInfoMeta.find("bases") != classInfoMeta.end())
{
for (auto &entry: classInfoMeta["bases"]->GetArray())
info.baseClasses.emplace_back(BaseClassInfo::DeserializedMetadata(entry));
}
if (classInfoMeta.find("vft") != classInfoMeta.end())
info.vft = VirtualFunctionTableInfo::DeserializedMetadata(classInfoMeta["vft"]);
return info;
}
Ref<Metadata> VirtualFunctionTableInfo::SerializedMetadata(const bool serializeFunctions) const
{
std::map<std::string, Ref<Metadata>> vftMeta;
vftMeta["address"] = new Metadata(address);
// NOTE: We allow omitting baseVft functions as it can be resolved manually and just bloats the size.
if (serializeFunctions && !virtualFunctions.empty())
{
std::vector<Ref<Metadata> > funcsMeta;
funcsMeta.reserve(virtualFunctions.size());
for (auto &vFunc: virtualFunctions)
funcsMeta.emplace_back(vFunc.SerializedMetadata());
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() const
{
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;
}
Ref<Metadata> RTTIProcessor::SerializedMetadata()
{
std::map<std::string, Ref<Metadata>> classesMeta;
for (auto &[objectAddr, classInfo]: m_classInfo)
{
auto addrStr = std::to_string(objectAddr);
classesMeta[addrStr] = classInfo.SerializedMetadata();
}
for (auto &[objectAddr, classInfo]: m_unhandledClassInfo)
{
auto addrStr = std::to_string(objectAddr);
// Unhandled class info will be discarded if handled class info exists for the same address.
if (classesMeta.find(addrStr) == classesMeta.end())
classesMeta[addrStr] = classInfo.SerializedMetadata();
}
std::map<std::string, Ref<Metadata>> itaniumMeta;
itaniumMeta["classes"] = new Metadata(classesMeta);
return new Metadata(itaniumMeta);
}
void RTTIProcessor::DeserializedMetadata(RTTIProcessorType type, const Ref<Metadata> &metadata)
{
std::map<std::string, Ref<Metadata>> msvcMeta = metadata->GetKeyValueStore();
if (msvcMeta.find("classes") != msvcMeta.end())
{
for (auto &[objectAddrStr, classInfoMeta]: msvcMeta["classes"]->GetKeyValueStore())
{
uint64_t objectAddr = std::stoull(objectAddrStr);
auto classInfo = ClassInfo::DeserializedMetadata(classInfoMeta);
if (classInfo.processor == type)
m_classInfo[objectAddr] = classInfo;
else
m_unhandledClassInfo[objectAddr] = classInfo;
}
}
}
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