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VMProtect
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VMProtect/core/objc.cc

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#include "objects.h"
#include "osutils.h"
#include "files.h"
#include "macfile.h"
#include "objc.h"
MacSection *GetObjcSection(MacArchitecture &file, uint8_t version, const std::string &section_name)
{
std::set<std::string> segment_list;
switch (version) {
case 1:
segment_list.insert(SEG_OBJC);
break;
case 2:
segment_list.insert(SEG_DATA);
segment_list.insert("__DATA_CONST");
break;
}
for (size_t i = 0; i < file.section_list()->count(); i++) {
MacSection *section = file.section_list()->item(i);
if (section->parent() && segment_list.find(section->parent()->name()) != segment_list.end() && section->name() == section_name)
return section;
}
return NULL;
}
/**
* BaseObjcMethod
*/
BaseObjcMethod::BaseObjcMethod(IObjcMethodList *owner, uint64_t address)
: IObjcMethod(), owner_(owner), address_(address)
{
}
BaseObjcMethod::~BaseObjcMethod()
{
if (owner_)
owner_->RemoveObject(this);
}
/**
* BaseObjcMethodList
*/
void BaseObjcMethodList::GetLoadMethodReferences(std::set<uint64_t> &address_list) const
{
for (size_t i = 0; i < count(); i++) {
item(i)->GetLoadMethodReferences(address_list);
}
}
void BaseObjcMethodList::GetStringReferences(std::set<uint64_t> &address_list) const
{
for (size_t i = 0; i < count(); i++) {
item(i)->GetStringReferences(address_list);
}
}
/**
* BaseObjcCLass
*/
BaseObjcClass::BaseObjcClass(IObjcClassList *owner, uint64_t address)
: IObjcClass(), owner_(owner), address_(address)
{
}
BaseObjcClass::~BaseObjcClass()
{
if (owner_)
owner_->RemoveObject(this);
}
/**
* BaseObjcClassList
*/
void BaseObjcClassList::AddObject(IObjcClass *object)
{
IObjcClassList::AddObject(object);
if (object->address())
map_[object->address()] = object;
}
void BaseObjcClassList::GetLoadMethodReferences(std::set<uint64_t> &address_list) const
{
for (size_t i = 0; i < count(); i++) {
item(i)->GetLoadMethodReferences(address_list);
}
}
void BaseObjcClassList::GetStringReferences(std::set<uint64_t> &address_list) const
{
for (size_t i = 0; i < count(); i++) {
item(i)->GetStringReferences(address_list);
}
}
IObjcClass *BaseObjcClassList::GetClassByAddress(uint64_t address) const
{
std::map<uint64_t, IObjcClass *>::const_iterator it = map_.find(address);
if (it != map_.end())
return it->second;
return NULL;
}
/**
* BaseObjcCategory
*/
BaseObjcCategory::BaseObjcCategory(IObjcCategoryList *owner, uint64_t address)
: IObjcCategory(), owner_(owner), address_(address)
{
}
BaseObjcCategory::~BaseObjcCategory()
{
if (owner_)
owner_->RemoveObject(this);
}
/**
* BaseObjcCategoryList
*/
void BaseObjcCategoryList::GetLoadMethodReferences(std::set<uint64_t> &address_list) const
{
for (size_t i = 0; i < count(); i++) {
item(i)->GetLoadMethodReferences(address_list);
}
}
void BaseObjcCategoryList::GetStringReferences(std::set<uint64_t> &address_list) const
{
for (size_t i = 0; i < count(); i++) {
item(i)->GetStringReferences(address_list);
}
}
/**
* BaseObjcSelector
*/
BaseObjcSelector::BaseObjcSelector(IObjcSelectorList *owner, uint64_t address)
: IObjcSelector(), owner_(owner), address_(address)
{
}
BaseObjcSelector::~BaseObjcSelector()
{
if (owner_)
owner_->RemoveObject(this);
}
/**
* BaseObjcSelectorList
*/
void BaseObjcSelectorList::GetStringReferences(std::set<uint64_t> &address_list) const
{
for (size_t i = 0; i < count(); i++) {
item(i)->GetStringReferences(address_list);
}
}
/**
* BaseObjcProtocol
*/
BaseObjcProtocol::BaseObjcProtocol(IObjcProtocolList *owner, uint64_t address)
: IObjcProtocol(), owner_(owner), address_(address)
{
}
BaseObjcProtocol::~BaseObjcProtocol()
{
if (owner_)
owner_->RemoveObject(this);
}
/**
* BaseObjcProtocolList
*/
IObjcProtocol *BaseObjcProtocolList::GetProtocolByAddress(uint64_t address) const
{
for (size_t i = 0; i < count(); i++) {
IObjcProtocol *prot = item(i);
if (prot->address() == address)
return prot;
}
return NULL;
}
void BaseObjcProtocolList::GetStringReferences(std::set<uint64_t> &address_list) const
{
for (size_t i = 0; i < count(); i++) {
item(i)->GetStringReferences(address_list);
}
}
/**
* ObjcMethod
*/
ObjcMethod::ObjcMethod(IObjcMethodList *owner, uint64_t address)
: BaseObjcMethod(owner, address)
{
size_ = osDWord;
name_ = 0;
types_ = 0;
imp_ = 0;
type_ = mtUnknown;
}
void ObjcMethod::ReadFromFile(MacArchitecture &file)
{
if (!file.AddressSeek(address()))
return;
size_ = file.cpu_address_size();
if (file.cpu_address_size() == osDWord) {
objc_method method;
file.Read(&method, sizeof(method));
name_ = method.name;
types_ = method.types;
imp_ = method.imp;
} else {
objc_method_64 method;
file.Read(&method, sizeof(method));
name_ = method.name;
types_ = method.types;
imp_ = method.imp;
}
if (name_ && file.AddressSeek(name_)) {
std::string name = file.ReadString();
if (name == "load")
type_ = mtLoad;
}
}
void ObjcMethod::GetLoadMethodReferences(std::set<uint64_t> &address_list) const
{
if (type_ == mtLoad && imp_)
address_list.insert(address() + ((size_ == osDWord) ? offsetof(objc_method, imp) : offsetof(objc_method_64, imp)));
}
void ObjcMethod::GetStringReferences(std::set<uint64_t> &address_list) const
{
if (name_)
address_list.insert(address() + ((size_ == osDWord) ? offsetof(objc_method, name) : offsetof(objc_method_64, name)));
if (types_)
address_list.insert(address() + ((size_ == osDWord) ? offsetof(objc_method, types) : offsetof(objc_method_64, types)));
}
/**
* ObjcMethodList
*/
ObjcMethodList::ObjcMethodList()
: BaseObjcMethodList()
{
}
ObjcMethod *ObjcMethodList::Add(uint64_t address)
{
ObjcMethod *objc_method = new ObjcMethod(this, address);
AddObject(objc_method);
return objc_method;
}
ObjcMethod *ObjcMethodList::item(size_t index) const
{
return reinterpret_cast<ObjcMethod *>(BaseObjcMethodList::item(index));
}
void ObjcMethodList::ReadFromFile(MacArchitecture &file, uint64_t address)
{
if (!file.AddressSeek(address))
return;
size_t method_size = file.cpu_address_size() == osDWord ? sizeof(objc_method) : sizeof(objc_method_64);
objc_method_list list;
file.Read(&list, sizeof(list));
address += sizeof(list);
for (size_t i = 0; i < list.count; i++) {
Add(address);
address += method_size;
}
for (size_t i = 0; i < count(); i++) {
item(i)->ReadFromFile(file);
}
}
/**
* ObjcClass
*/
ObjcClass::ObjcClass(IObjcClassList *owner, uint64_t address)
: BaseObjcClass(owner, address), size_(osDWord), isa_(0), super_class_(0), name_(0),
version_(0), info_(0), instance_size_(0), ivars_(0), methods_(0), cache_(0), protocols_(0)
{
method_list_ = new ObjcMethodList();
}
ObjcClass::~ObjcClass()
{
delete method_list_;
}
void ObjcClass::ReadFromFile(MacArchitecture &file)
{
if (!file.AddressSeek(address()))
return;
size_ = file.cpu_address_size();
if (file.cpu_address_size() == osDWord) {
objc_class klass;
file.Read(&klass, sizeof(klass));
isa_ = klass.isa;
super_class_ = klass.super_class;
name_ = klass.name;
version_ = klass.version;
info_ = klass.info;
instance_size_ = klass.instance_size;
ivars_ = klass.ivars;
methods_ = klass.methods;
cache_ = klass.cache;
protocols_ = klass.protocols;
} else {
objc_class_64 klass;
file.Read(&klass, sizeof(klass));
isa_ = klass.isa;
super_class_ = klass.super_class;
name_ = klass.name;
version_ = klass.version;
info_ = klass.info;
instance_size_ = klass.instance_size;
ivars_ = klass.ivars;
methods_ = klass.methods;
cache_ = klass.cache;
protocols_ = klass.protocols;
}
if (methods_)
method_list_->ReadFromFile(file, methods_);
}
void ObjcClass::GetLoadMethodReferences(std::set<uint64_t> &address_list) const
{
method_list_->GetLoadMethodReferences(address_list);
}
void ObjcClass::GetStringReferences(std::set<uint64_t> &address_list) const
{
if (isa_ && (info_ & (CLS_CLASS | CLS_META)) == CLS_META)
address_list.insert(address() + ((size_ == osDWord) ? offsetof(objc_class, isa) : offsetof(objc_class_64, isa)));
if (super_class_)
address_list.insert(address() + ((size_ == osDWord) ? offsetof(objc_class, super_class) : offsetof(objc_class_64, super_class)));
if (name_)
address_list.insert(address() + ((size_ == osDWord) ? offsetof(objc_class, name) : offsetof(objc_class_64, name)));
method_list_->GetStringReferences(address_list);
}
/**
* ObjcClassList
*/
ObjcClassList::ObjcClassList()
: BaseObjcClassList()
{
}
ObjcClass *ObjcClassList::Add(uint64_t address)
{
ObjcClass *objc_class = new ObjcClass(this, address);
AddObject(objc_class);
return objc_class;
}
ObjcClass *ObjcClassList::item(size_t index) const
{
return reinterpret_cast<ObjcClass *>(BaseObjcClassList::item(index));
}
void ObjcClassList::ReadFromFile(MacArchitecture &file, size_t class_count)
{
size_t i, old_count;
size_t value_size = OperandSizeToValue(file.cpu_address_size());
uint64_t value = 0;
old_count = count();
for (i = 0; i < class_count; i++) {
assert(sizeof(value) >= value_size);
file.Read(&value, value_size);
if (!GetClassByAddress(value))
Add(value);
}
uint64_t pos = file.Tell();
for (i = old_count; i < count(); i++) {
ObjcClass *obj_class = item(i);
obj_class->ReadFromFile(file);
if (obj_class->isa() && (obj_class->info() & CLS_CLASS) && !GetClassByAddress(obj_class->isa()))
Add(obj_class->isa());
}
file.Seek(pos);
}
/**
* ObjcCategory
*/
ObjcCategory::ObjcCategory(IObjcCategoryList *owner, uint64_t address)
: BaseObjcCategory(owner, address), size_(osDWord), category_name_(0), class_name_(0), instance_methods_(0), class_methods_(0), protocols_(0)
{
method_list_ = new ObjcMethodList();
class_method_list_ = new ObjcMethodList();
}
ObjcCategory::~ObjcCategory()
{
delete method_list_;
delete class_method_list_;
}
void ObjcCategory::ReadFromFile(MacArchitecture &file)
{
if (!file.AddressSeek(address()))
return;
size_ = file.cpu_address_size();
if (file.cpu_address_size() == osDWord) {
objc_category category;
file.Read(&category, sizeof(category));
category_name_ = category.category_name;
class_name_ = category.class_name;
instance_methods_ = category.instance_methods;
class_methods_ = category.class_methods;
protocols_ = category.protocols;
} else {
objc_category_64 category;
file.Read(&category, sizeof(category));
category_name_ = category.category_name;
class_name_ = category.class_name;
instance_methods_ = category.instance_methods;
class_methods_ = category.class_methods;
protocols_ = category.protocols;
}
if (instance_methods_)
method_list_->ReadFromFile(file, instance_methods_);
if (class_methods_)
class_method_list_->ReadFromFile(file, class_methods_);
}
void ObjcCategory::GetLoadMethodReferences(std::set<uint64_t> &address_list) const
{
method_list_->GetLoadMethodReferences(address_list);
}
void ObjcCategory::GetStringReferences(std::set<uint64_t> &address_list) const
{
if (category_name_)
address_list.insert(address() + ((size_ == osDWord) ? offsetof(objc_category, category_name) : offsetof(objc_category_64, category_name)));
if (class_name_)
address_list.insert(address() + ((size_ == osDWord) ? offsetof(objc_category, class_name) : offsetof(objc_category_64, class_name)));
method_list_->GetStringReferences(address_list);
class_method_list_->GetStringReferences(address_list);
}
/**
* ObjcCategoryList
*/
ObjcCategoryList::ObjcCategoryList()
: BaseObjcCategoryList()
{
}
ObjcCategory *ObjcCategoryList::Add(uint64_t address)
{
ObjcCategory *objc_category = new ObjcCategory(this, address);
AddObject(objc_category);
return objc_category;
}
ObjcCategory *ObjcCategoryList::item(size_t index) const
{
return reinterpret_cast<ObjcCategory *>(BaseObjcCategoryList::item(index));
}
void ObjcCategoryList::ReadFromFile(MacArchitecture &file, size_t count)
{
size_t i;
size_t value_size = OperandSizeToValue(file.cpu_address_size());
uint64_t value = 0;
for (i = 0; i < count; i++) {
assert(sizeof(value) >= value_size);
file.Read(&value, value_size);
Add(value);
}
for (i = 0; i < count; i++) {
item(i)->ReadFromFile(file);
}
}
/**
* ObjcSelector
*/
ObjcSelector::ObjcSelector(IObjcSelectorList *owner, uint64_t address)
: BaseObjcSelector(owner, address)
{
}
void ObjcSelector::GetStringReferences(std::set<uint64_t> &address_list) const
{
address_list.insert(address());
}
/**
* ObjcSelectorList
*/
ObjcSelectorList::ObjcSelectorList()
: BaseObjcSelectorList()
{
}
void ObjcSelectorList::ReadFromFile(MacArchitecture &file)
{
MacSection *section = GetObjcSection(file, 1, "__message_refs");
if (section && file.AddressSeek(section->address())) {
size_t value_size = OperandSizeToValue(file.cpu_address_size());
size_t count = static_cast<size_t>(section->size() / OperandSizeToValue(file.cpu_address_size()));
uint64_t address = section->address();
for (size_t i = 0; i < count; i++) {
Add(address);
address += value_size;
}
}
}
ObjcSelector *ObjcSelectorList::Add(uint64_t address)
{
ObjcSelector *sel = new ObjcSelector(this, address);
AddObject(sel);
return sel;
}
/**
* ObjcProtocol
*/
ObjcProtocol::ObjcProtocol(ObjcProtocolList *owner, uint64_t address)
: BaseObjcProtocol(owner, address)
{
size_ = osDWord;
isa_ = 0;
name_ = 0;
protocols_ = 0;
instance_methods_ = 0;
class_methods_ = 0;
}
void ObjcProtocol::GetStringReferences(std::set<uint64_t> &address_list) const
{
address_list.insert(address() + ((size_ == osDWord) ? offsetof(objc_protocol, name) : offsetof(objc_protocol_64, name)));
}
void ObjcProtocol::ReadFromFile(MacArchitecture &file)
{
if (!file.AddressSeek(address()))
return;
size_ = file.cpu_address_size();
if (file.cpu_address_size() == osDWord) {
objc_protocol protocol;
file.Read(&protocol, sizeof(protocol));
isa_ = protocol.isa;
name_ = protocol.name;
protocols_ = protocol.protocols;
instance_methods_ = protocol.instance_methods;
class_methods_ = protocol.class_methods;
} else {
objc_protocol_64 protocol;
file.Read(&protocol, sizeof(protocol));
isa_ = protocol.isa;
name_ = protocol.name;
protocols_ = protocol.protocols;
instance_methods_ = protocol.instance_methods;
class_methods_ = protocol.class_methods;
}
}
/**
* ObjcProtocolList
*/
ObjcProtocolList::ObjcProtocolList()
: BaseObjcProtocolList()
{
}
ObjcProtocol *ObjcProtocolList::item(size_t index) const
{
return reinterpret_cast<ObjcProtocol *>(BaseObjcProtocolList::item(index));
}
void ObjcProtocolList::ReadFromFile(MacArchitecture &file)
{
MacSection *section = GetObjcSection(file, 1, "__protocol");
if (section && file.AddressSeek(section->address())) {
size_t protocol_size = (file.cpu_address_size() == osDWord) ? sizeof(objc_protocol) : sizeof(objc_protocol_64);
size_t count = static_cast<size_t>(section->size() / protocol_size);
uint64_t address = section->address();
for (size_t i = 0; i < count; i++) {
Add(address);
address += protocol_size;
}
}
for (size_t i = 0; i < count(); i++) {
item(i)->ReadFromFile(file);
}
}
ObjcProtocol *ObjcProtocolList::Add(uint64_t address)
{
ObjcProtocol *prot = new ObjcProtocol(this, address);
AddObject(prot);
return prot;
}
/**
* ObjcStorage
*/
ObjcStorage::ObjcStorage()
: IObjcStorage()
{
class_list_ = new ObjcClassList();
category_list_ = new ObjcCategoryList();
selector_list_ = new ObjcSelectorList();
protocol_list_ = new ObjcProtocolList();
}
ObjcStorage::~ObjcStorage()
{
delete class_list_;
delete category_list_;
delete selector_list_;
delete protocol_list_;
}
void ObjcStorage::ReadFromFile(MacArchitecture &file)
{
size_t i;
std::vector<uint64_t> symtab_list;
MacSection *section = GetObjcSection(file, 1, SECT_OBJC_MODULES);
if (section && file.AddressSeek(section->address())) {
size_t module_size = (file.cpu_address_size() == osDWord) ? sizeof(objc_module) : sizeof(objc_module_64);
size_t module_count = static_cast<size_t>(section->size() / module_size);
for (i = 0; i < module_count; i++) {
uint64_t symtab;
if (file.cpu_address_size() == osDWord) {
objc_module module;
file.Read(&module, sizeof(module));
symtab = module.symtab;
} else {
objc_module_64 module;
file.Read(&module, sizeof(module));
symtab = module.symtab;
}
if (symtab)
symtab_list.push_back(symtab);
}
}
for (i = 0; i < symtab_list.size(); i++) {
if (file.AddressSeek(symtab_list[i])) {
uint16_t cls_def_cnt;
uint16_t cat_def_cnt;
if (file.cpu_address_size() == osDWord) {
objc_symtab symtab;
file.Read(&symtab, sizeof(symtab));
cls_def_cnt = symtab.cls_def_cnt;
cat_def_cnt = symtab.cat_def_cnt;
} else {
objc_symtab_64 symtab;
file.Read(&symtab, sizeof(symtab));
cls_def_cnt = symtab.cls_def_cnt;
cat_def_cnt = symtab.cat_def_cnt;
}
class_list_->ReadFromFile(file, cls_def_cnt);
category_list_->ReadFromFile(file, cat_def_cnt);
}
}
selector_list_->ReadFromFile(file);
protocol_list_->ReadFromFile(file);
MacSegment *segment = file.segment_list()->GetSectionByName(SEG_OBJC);
if (segment)
segment_list_.push_back(segment);
}
void ObjcStorage::GetLoadMethodReferences(std::set<uint64_t> &address_list) const
{
class_list_->GetLoadMethodReferences(address_list);
category_list_->GetLoadMethodReferences(address_list);
}
void ObjcStorage::GetStringReferences(std::set<uint64_t> &address_list) const
{
class_list_->GetStringReferences(address_list);
category_list_->GetStringReferences(address_list);
selector_list_->GetStringReferences(address_list);
protocol_list_->GetStringReferences(address_list);
}
/**
* Objc2Method
*/
Objc2Method::Objc2Method(IObjcMethodList *owner, uint64_t address)
: BaseObjcMethod(owner, address), size_(osDWord), name_(0), types_(0), imp_(0), type_(mtUnknown)
{
}
void Objc2Method::ReadFromFile(MacArchitecture &file)
{
if (!file.AddressSeek(address()))
return;
size_ = file.cpu_address_size();
if (file.cpu_address_size() == osDWord) {
objc2_method method;
file.Read(&method, sizeof(method));
name_ = method.name;
types_ = method.types;
imp_ = method.imp;
} else {
objc2_method_64 method;
file.Read(&method, sizeof(method));
name_ = method.name;
types_ = method.types;
imp_ = method.imp;
}
if (name_ && file.AddressSeek(name_)) {
std::string name = file.ReadString();
if (name == "load")
type_ = mtLoad;
}
}
void Objc2Method::GetLoadMethodReferences(std::set<uint64_t> &address_list) const
{
if (type_ == mtLoad && imp_)
address_list.insert(address() + ((size_ == osDWord) ? offsetof(objc2_method, imp) : offsetof(objc2_method_64, imp)));
}
void Objc2Method::GetStringReferences(std::set<uint64_t> &address_list) const
{
if (name_)
address_list.insert(address() + ((size_ == osDWord) ? offsetof(objc2_method, name) : offsetof(objc2_method_64, name)));
if (types_)
address_list.insert(address() + ((size_ == osDWord) ? offsetof(objc2_method, types) : offsetof(objc2_method_64, types)));
}
/**
* Objc2MethodList
*/
Objc2MethodList::Objc2MethodList()
: BaseObjcMethodList()
{
}
Objc2Method *Objc2MethodList::Add(uint64_t address)
{
Objc2Method *objc_method = new Objc2Method(this, address);
AddObject(objc_method);
return objc_method;
}
Objc2Method *Objc2MethodList::item(size_t index) const
{
return reinterpret_cast<Objc2Method *>(BaseObjcMethodList::item(index));
}
void Objc2MethodList::ReadFromFile(MacArchitecture &file, uint64_t address)
{
if (!file.AddressSeek(address))
return;
size_t value_size = OperandSizeToValue(file.cpu_address_size());
size_t method_size = file.cpu_address_size() == osDWord ? sizeof(objc_method) : sizeof(objc_method_64);
/*uint32_t entsize =*/ file.ReadDWord();
uint32_t method_count = file.ReadDWord();
address += sizeof(uint32_t)/*entsize*/ + sizeof(method_count);
for (size_t i = 0; i < method_count; i++) {
Add(address);
address += method_size;
}
for (size_t i = 0; i < count(); i++) {
item(i)->ReadFromFile(file);
}
}
/**
* Objc2Class
*/
Objc2Class::Objc2Class(IObjcClassList *owner, uint64_t address)
: BaseObjcClass(owner, address)
{
size_ = osDWord;
flags_ = 0;
isa_ = 0;
super_class_ = 0;
cache_ = 0;
vtable_ = 0;
data_ = 0;
ivar_layout_ = 0;
name_ = 0;
base_methods_ = 0;
base_protocols_ = 0;
ivars_ = 0;
protocols_ = 0;
weak_ivar_layout_ = 0;
base_properties_ = 0;
instance_start_ = 0;
instance_size_ = 0;
method_list_ = new Objc2MethodList();
}
Objc2Class::~Objc2Class()
{
delete method_list_;
}
void Objc2Class::ReadFromFile(MacArchitecture &file)
{
if (!file.AddressSeek(address()))
return;
size_ = file.cpu_address_size();
if (file.cpu_address_size() == osDWord) {
objc2_class klass;
file.Read(&klass, sizeof(klass));
isa_ = klass.isa;
super_class_ = klass.super_class;
cache_ = klass.cache;
vtable_ = klass.vtable;
data_ = klass.data;
} else {
objc2_class_64 klass;
file.Read(&klass, sizeof(klass));
isa_ = klass.isa;
super_class_ = klass.super_class;
cache_ = klass.cache;
vtable_ = klass.vtable;
data_ = klass.data;
}
if (!file.AddressSeek(data_))
return;
if (file.cpu_address_size() == osDWord) {
objc2_class_data data;
file.Read(&data, sizeof(data));
flags_ = data.flags;
instance_start_ = data.instance_start;
instance_size_ = data.instance_size;
ivar_layout_ = data.ivar_layout;
name_ = data.name;
base_methods_ = data.base_methods;
base_protocols_ = data.base_protocols;
ivars_ = data.ivars;
weak_ivar_layout_ = data.weak_ivar_layout;
base_properties_ = data.base_properties;
} else {
objc2_class_data_64 data;
file.Read(&data, sizeof(data));
flags_ = data.flags;
instance_start_ = data.instance_start;
instance_size_ = data.instance_size;
ivar_layout_ = data.ivar_layout;
name_ = data.name;
base_methods_ = data.base_methods;
base_protocols_ = data.base_protocols;
ivars_ = data.ivars;
weak_ivar_layout_ = data.weak_ivar_layout;
base_properties_ = data.base_properties;
}
if (base_methods_)
method_list_->ReadFromFile(file, base_methods_);
};
void Objc2Class::GetLoadMethodReferences(std::set<uint64_t> &address_list) const
{
method_list_->GetLoadMethodReferences(address_list);
}
void Objc2Class::GetStringReferences(std::set<uint64_t> &address_list) const
{
if (name_)
address_list.insert(data_ + ((size_ == osDWord) ? offsetof(objc2_class_data, name) : offsetof(objc2_class_data_64, name)));
method_list_->GetStringReferences(address_list);
}
/**
* Objc2ClassList
*/
Objc2ClassList::Objc2ClassList()
: BaseObjcClassList()
{
}
Objc2Class *Objc2ClassList::Add(uint64_t address)
{
Objc2Class *objc_class = new Objc2Class(this, address);
AddObject(objc_class);
return objc_class;
}
Objc2Class *Objc2ClassList::item(size_t index) const
{
return reinterpret_cast<Objc2Class *>(BaseObjcClassList::item(index));
}
void Objc2ClassList::ReadFromFile(MacArchitecture &file)
{
const char *classlist_section_name[] = {
"__objc_nlclslist",
"__objc_classlist"
};
for (size_t j = 0; j < _countof(classlist_section_name); j++) {
MacSection *section = GetObjcSection(file, 2, classlist_section_name[j]);
if (section && file.AddressSeek(section->address())) {
size_t count = static_cast<size_t>(section->size() / OperandSizeToValue(file.cpu_address_size()));
size_t value_size = OperandSizeToValue(file.cpu_address_size());
uint64_t value = 0;
for (size_t i = 0; i < count; i++) {
assert(sizeof(value) >= value_size);
file.Read(&value, value_size);
if (!GetClassByAddress(value))
Add(value);
}
}
}
for (size_t i = 0; i < count(); i++) {
Objc2Class *obj_class = item(i);
obj_class->ReadFromFile(file);
if (obj_class->isa() && !GetClassByAddress(obj_class->isa()))
Add(obj_class->isa());
if (obj_class->super_class() && !GetClassByAddress(obj_class->super_class()))
Add(obj_class->super_class());
}
}
/**
* ObjcCategory
*/
Objc2Category::Objc2Category(IObjcCategoryList *owner, uint64_t address)
: BaseObjcCategory(owner, address), name_(0), cls_(0), instance_methods_(0), class_methods_(0), protocols_(0), instance_properties_(0), size_(osDWord)
{
method_list_ = new Objc2MethodList();
class_method_list_ = new Objc2MethodList();
}
Objc2Category::~Objc2Category()
{
delete method_list_;
delete class_method_list_;
}
void Objc2Category::ReadFromFile(MacArchitecture &file)
{
if (!file.AddressSeek(address()))
return;
size_ = file.cpu_address_size();
if (file.cpu_address_size() == osDWord) {
objc2_category category;
file.Read(&category, sizeof(category));
name_ = category.name;
cls_ = category.cls;
instance_methods_ = category.instance_methods;
class_methods_ = category.class_methods;
protocols_ = category.protocols;
instance_properties_ = category.instance_properties;
} else {
objc2_category_64 category;
file.Read(&category, sizeof(category));
name_ = category.name;
cls_ = category.cls;
instance_methods_ = category.instance_methods;
class_methods_ = category.class_methods;
protocols_ = category.protocols;
instance_properties_ = category.instance_properties;
}
if (instance_methods_)
method_list_->ReadFromFile(file, instance_methods_);
if (class_methods_)
class_method_list_->ReadFromFile(file, class_methods_);
}
void Objc2Category::GetLoadMethodReferences(std::set<uint64_t> &address_list) const
{
method_list_->GetLoadMethodReferences(address_list);
class_method_list_->GetStringReferences(address_list);
}
void Objc2Category::GetStringReferences(std::set<uint64_t> &address_list) const
{
if (name_)
address_list.insert(address() + ((size_ == osDWord) ? offsetof(objc2_category, name) : offsetof(objc2_category_64, name)));
method_list_->GetStringReferences(address_list);
class_method_list_->GetStringReferences(address_list);
}
/**
* Objc2CategoryList
*/
Objc2CategoryList::Objc2CategoryList()
: BaseObjcCategoryList()
{
}
Objc2Category *Objc2CategoryList::Add(uint64_t address)
{
Objc2Category *objc_category = new Objc2Category(this, address);
AddObject(objc_category);
return objc_category;
}
Objc2Category *Objc2CategoryList::item(size_t index) const
{
return reinterpret_cast<Objc2Category *>(BaseObjcCategoryList::item(index));
}
void Objc2CategoryList::ReadFromFile(MacArchitecture &file)
{
const char *catlist_section_name[] = {
"__objc_nlcatlist",
"__objc_catlist"
};
size_t value_size = OperandSizeToValue(file.cpu_address_size());
uint64_t value = 0;
assert(sizeof(value) >= value_size);
for (size_t j = 0; j < _countof(catlist_section_name); j++) {
MacSection *section = GetObjcSection(file, 2, catlist_section_name[j]);
if (section && file.AddressSeek(section->address())) {
size_t count = static_cast<size_t>(section->size()) / OperandSizeToValue(file.cpu_address_size());
for (size_t i = 0; i < count; i++) {
file.Read(&value, value_size);
Add(value);
}
}
}
for (size_t i = 0; i < count(); i++) {
item(i)->ReadFromFile(file);
}
}
/**
* Objc2SelectorList
*/
Objc2SelectorList::Objc2SelectorList()
: BaseObjcSelectorList()
{
}
void Objc2SelectorList::ReadFromFile(MacArchitecture &file)
{
MacSection *section = GetObjcSection(file, 2, "__objc_selrefs");
if (section && file.AddressSeek(section->address())) {
size_t value_size = OperandSizeToValue(file.cpu_address_size());
size_t count = static_cast<size_t>(section->size() / OperandSizeToValue(file.cpu_address_size()));
uint64_t address = section->address();
for (size_t i = 0; i < count; i++) {
Add(address);
address += value_size;
}
}
}
ObjcSelector *Objc2SelectorList::Add(uint64_t address)
{
ObjcSelector *sel = new ObjcSelector(this, address);
AddObject(sel);
return sel;
}
/**
* Objc2Protocol
*/
Objc2Protocol::Objc2Protocol(Objc2ProtocolList *owner, uint64_t address)
: BaseObjcProtocol(owner, address), size_(osDWord)
{
method_list_ = new Objc2MethodList();
}
Objc2Protocol::~Objc2Protocol()
{
delete method_list_;
}
void Objc2Protocol::GetStringReferences(std::set<uint64_t> &address_list) const
{
address_list.insert(address() + ((size_ == osDWord) ? offsetof(objc2_protocol, name) : offsetof(objc2_protocol_64, name)));
method_list_->GetStringReferences(address_list);
}
void Objc2Protocol::ReadFromFile(MacArchitecture &file)
{
if (!file.AddressSeek(address()))
return;
size_ = file.cpu_address_size();
if (file.cpu_address_size() == osDWord) {
objc2_protocol protocol;
file.Read(&protocol, sizeof(protocol));
isa_ = protocol.isa;
name_ = protocol.name;
protocols_ = protocol.protocols;
instance_methods_ = protocol.instance_methods;
class_methods_ = protocol.class_methods;
optional_instance_methods_ = protocol.optional_instance_methods;
optional_class_methods_ = protocol.optional_class_methods;
instance_properties_ = protocol.instance_properties;
} else {
objc2_protocol_64 protocol;
file.Read(&protocol, sizeof(protocol));
isa_ = protocol.isa;
name_ = protocol.name;
protocols_ = protocol.protocols;
instance_methods_ = protocol.instance_methods;
class_methods_ = protocol.class_methods;
optional_instance_methods_ = protocol.optional_instance_methods;
optional_class_methods_ = protocol.optional_class_methods;
instance_properties_ = protocol.instance_properties;
}
if (instance_methods_)
method_list_->ReadFromFile(file, instance_methods_);
}
/**
* Objc2ProtocolList
*/
Objc2ProtocolList::Objc2ProtocolList()
: BaseObjcProtocolList()
{
}
Objc2Protocol *Objc2ProtocolList::item(size_t index) const
{
return reinterpret_cast<Objc2Protocol *>(BaseObjcProtocolList::item(index));
}
void Objc2ProtocolList::ReadFromFile(MacArchitecture &file)
{
const char *protolist_section_name[] = {
"__objc_protolist",
"__objc_protorefs"
};
size_t value_size = OperandSizeToValue(file.cpu_address_size());
for (size_t j = 0; j < _countof(protolist_section_name); j++) {
MacSection *section = GetObjcSection(file, 2, protolist_section_name[j]);
if (section && file.AddressSeek(section->address())) {
size_t count = static_cast<size_t>(section->size() / OperandSizeToValue(file.cpu_address_size()));
uint64_t value = 0;
for (size_t i = 0; i < count; i++) {
file.Read(&value, value_size);
if (!GetProtocolByAddress(value))
Add(value);
}
}
}
for (size_t i = 0; i < count(); i++) {
item(i)->ReadFromFile(file);
}
}
Objc2Protocol *Objc2ProtocolList::Add(uint64_t address)
{
Objc2Protocol *prot = new Objc2Protocol(this, address);
AddObject(prot);
return prot;
}
void Objc2ProtocolList::GetStringReferences(std::set<uint64_t> &address_list) const
{
for (size_t i = 0; i < count(); i++) {
item(i)->GetStringReferences(address_list);
}
}
/**
* Objc2Message
*/
Objc2Message::Objc2Message(Objc2MessageList *owner, uint64_t address)
: IObject(), owner_(owner), address_(address), size_(osDefault), imp_(0), name_(0)
{
}
Objc2Message::~Objc2Message()
{
if (owner_)
owner_->RemoveObject(this);
}
void Objc2Message::ReadFromFile(MacArchitecture &file)
{
if (!file.AddressSeek(address_))
return;
size_ = file.cpu_address_size();
if (file.cpu_address_size() == osDWord) {
objc2_message message;
file.Read(&message, sizeof(message));
imp_ = message.imp;
name_ = message.name;
} else {
objc2_message_64 message;
file.Read(&message, sizeof(message));
imp_ = message.imp;
name_ = message.name;
}
}
void Objc2Message::GetStringReferences(std::set<uint64_t> &address_list) const
{
address_list.insert(address_ + ((size_ == osDWord) ? offsetof(objc2_message, name) : offsetof(objc2_message_64, name)));
}
/**
* Objc2MessageList
*/
Objc2MessageList::Objc2MessageList()
: ObjectList<Objc2Message>()
{
}
void Objc2MessageList::ReadFromFile(MacArchitecture &file)
{
MacSection *section = GetObjcSection(file, 2, "__objc_msgrefs");
if (section && file.AddressSeek(section->address())) {
size_t value_size = file.cpu_address_size() == osDWord ? sizeof(objc2_message) : sizeof(objc2_message_64);
size_t count = static_cast<size_t>(section->size() / OperandSizeToValue(file.cpu_address_size()));
uint64_t address = section->address();
for (size_t i = 0; i < count; i++) {
Add(address);
address += value_size;
}
}
for (size_t i = 0; i < count(); i++) {
item(i)->ReadFromFile(file);
}
}
Objc2Message *Objc2MessageList::Add(uint64_t address)
{
Objc2Message *message = new Objc2Message(this, address);
AddObject(message);
return message;
}
void Objc2MessageList::GetStringReferences(std::set<uint64_t> &address_list) const
{
for (size_t i = 0; i < count(); i++) {
item(i)->GetStringReferences(address_list);
}
}
/**
* Objc2Storage
*/
Objc2Storage::Objc2Storage()
: IObjcStorage()
{
class_list_ = new Objc2ClassList();
category_list_ = new Objc2CategoryList();
selector_list_ = new Objc2SelectorList();
protocol_list_ = new Objc2ProtocolList();
message_list_ = new Objc2MessageList();
}
Objc2Storage::~Objc2Storage()
{
delete class_list_;
delete category_list_;
delete selector_list_;
delete protocol_list_;
delete message_list_;
}
void Objc2Storage::ReadFromFile(MacArchitecture &file)
{
class_list_->ReadFromFile(file);
category_list_->ReadFromFile(file);
selector_list_->ReadFromFile(file);
protocol_list_->ReadFromFile(file);
message_list_->ReadFromFile(file);
for (size_t i = 0; i < file.section_list()->count(); i++) {
MacSection *section = file.section_list()->item(i);
if (!section->parent() || find(segment_list_.begin(), segment_list_.end(), section->parent()) != segment_list_.end())
continue;
if (section->name().substr(0, 7) == "__objc_" && GetObjcSection(file, 2, section->name()))
segment_list_.push_back(section->parent());
}
}
void Objc2Storage::GetLoadMethodReferences(std::set<uint64_t> &address_list) const
{
class_list_->GetLoadMethodReferences(address_list);
category_list_->GetLoadMethodReferences(address_list);
}
void Objc2Storage::GetStringReferences(std::set<uint64_t> &address_list) const
{
class_list_->GetStringReferences(address_list);
category_list_->GetStringReferences(address_list);
selector_list_->GetStringReferences(address_list);
protocol_list_->GetStringReferences(address_list);
message_list_->GetStringReferences(address_list);
}
/**
* Objc
*/
Objc::Objc()
: IObject(), storage_(NULL)
{
}
Objc::~Objc()
{
delete storage_;
}
bool Objc::ReadFromFile(MacArchitecture &file)
{
delete storage_;
storage_ = NULL;
if (GetObjcSection(file, 1, "__image_info"))
storage_ = new ObjcStorage();
else if (GetObjcSection(file, 2, "__objc_imageinfo"))
storage_ = new Objc2Storage();
if (storage_) {
storage_->ReadFromFile(file);
return true;
}
return false;
}
void Objc::GetLoadMethodReferences(std::set<uint64_t> &address_list) const
{
address_list.clear();
if (storage_)
storage_->GetLoadMethodReferences(address_list);
}
void Objc::GetStringReferences(std::set<uint64_t> &address_list) const
{
address_list.clear();
if (storage_)
storage_->GetStringReferences(address_list);
}
std::vector<MacSegment *> Objc::segment_list() const
{
if (storage_)
return storage_->segment_list();
return std::vector<MacSegment *>();
}
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