address_translator() : enabled(true)
{
// Must have bounds filled with min ptr and max ptr to have search working properly
map.insert(std::make_pair(raw_ptr(0x00000000u), raw_ptr(0x00000000u)));
map.insert(std::make_pair(raw_ptr(0xffffffffu), raw_ptr(0xffffffffu)));
add();
}
raw_ptr get(void)
{
throw std::runtime_error(
Traits::translate(
shared_data,
"Copy construction not supported"
)
);
return raw_ptr();
}
void dispatch(implementation_type& impl, Handler handler)
{
// If we are already in the strand then the handler can run immediately.
if (call_stack<strand_impl>::contains(impl))
{
boost::asio::detail::fenced_block b;
boost_asio_handler_invoke_helpers::invoke(handler, handler);
return;
}
// Allocate and construct an object to wrap the handler.
typedef completion_handler<Handler> value_type;
typedef handler_alloc_traits<Handler, value_type> alloc_traits;
raw_handler_ptr<alloc_traits> raw_ptr(handler);
handler_ptr<alloc_traits> ptr(raw_ptr, handler);
// If we are running inside the io_service, and no other handler is queued
// or running, then the handler can run immediately.
bool can_dispatch = call_stack<io_service_impl>::contains(&io_service_);
impl->mutex_.lock();
bool first = (++impl->count_ == 1);
if (can_dispatch && first)
{
// Immediate invocation is allowed.
impl->mutex_.unlock();
// Memory must be releaesed before any upcall is made.
ptr.reset();
// Indicate that this strand is executing on the current thread.
call_stack<strand_impl>::context ctx(impl);
// Ensure the next handler, if any, is scheduled on block exit.
on_dispatch_exit on_exit = { &io_service_, impl };
(void)on_exit;
boost::asio::detail::fenced_block b;
boost_asio_handler_invoke_helpers::invoke(handler, handler);
return;
}
// Immediate invocation is not allowed, so enqueue for later.
impl->queue_.push(ptr.get());
impl->mutex_.unlock();
ptr.release();
// The first handler to be enqueued is responsible for scheduling the
// strand.
if (first)
io_service_.post_immediate_completion(impl);
}
inline void* address_translator_manager::translator(void* p_)
{
static const size_t max_ptr_dist = 7;
// Tries to find an address in a translator map
auto try_map = [](const std::map<memory_pointer_raw, memory_pointer_raw>& map, memory_pointer_raw p) -> memory_pointer_raw
{
memory_pointer_raw result = nullptr;
// Find first element in the map that is greater than or equal to p
auto it = map.lower_bound(p);
if(it != map.end())
{
// If it's not exactly the address, get back one position on the table
if(it->first != p) --it;
auto diff = (p - it->first).as_int(); // What's the difference between p and that address?
if(diff <= max_ptr_dist) // Could we live with this difference in hands?
result = it->second + raw_ptr(diff); // Yes, we can!
}
return result;
};
//
memory_pointer_raw result = nullptr;
// Try to find translation for this pointer
auto& mgr = address_translator_manager::singleton().translators;
for(auto it = mgr.begin(); result == nullptr && it != mgr.end(); ++it)
{
auto& t = **it;
if(t.is_enabled()) result = try_map(t.map, p_);
}
// If we couldn't translate the address, notify and try to fallback
if(result.is_null())
{
for(auto it = mgr.begin(); result == nullptr && it != mgr.end(); ++it)
{
auto& t = **it;
if(t.is_enabled()) result = t.fallback(p_);
}
}
return result.get();
}
// make a new copied instance if the type has a copy constructor
static raw_ptr make_new_copy(
raw_ptr source,
std::true_type
)
{
// check the source
assert(bool(source));
// cast and dereference the source pointer
// and make a new instance using the copy
// constructor
original_type* tmp = new original_type(
*(mirror::raw_cast<
const original_type*
>(source))
);
return raw_ptr(tmp);
}
raw_ptr add_constructor(
raw_ptr parent_data,
const shared<meta_constructor>& constructor,
const polymorph_factory_context& context,
bool backward_iteration
)
{
// Let the helper take a look at the current constructor
// and to update the index pick data
helper.preview_constructor(
constructor,
ctx_data,
idx_pick_data,
backward_iteration
);
return raw_ptr(&data);
}
void post(implementation_type& impl, Handler handler)
{
// Allocate and construct an object to wrap the handler.
typedef completion_handler<Handler> value_type;
typedef handler_alloc_traits<Handler, value_type> alloc_traits;
raw_handler_ptr<alloc_traits> raw_ptr(handler);
handler_ptr<alloc_traits> ptr(raw_ptr, handler);
// Add the handler to the queue.
impl->mutex_.lock();
bool first = (++impl->count_ == 1);
impl->queue_.push(ptr.get());
impl->mutex_.unlock();
ptr.release();
// The first handler to be enqueue is responsible for scheduling the strand.
if (first)
io_service_.post_immediate_completion(impl);
}
raw_ptr data(void)
{
return raw_ptr(¶m);
}
// Detects game, region and version; returns false if could not detect it
inline bool game_version_manager::Detect()
{
// Cleanup data
this->Clear();
// Find NT header
uintptr_t base = (uintptr_t) GetModuleHandleA(NULL);;
IMAGE_DOS_HEADER* dos = (IMAGE_DOS_HEADER*)(base);
IMAGE_NT_HEADERS* nt = (IMAGE_NT_HEADERS*)(base + dos->e_lfanew);
// Look for game and version thought the entry-point
// Thanks to Silent for many of the entry point offsets
switch(base + nt->OptionalHeader.AddressOfEntryPoint)
{
case 0x5C1E70: // GTA III 1.0
game = '3', major = 1, minor = 0, region = 0, steam = false;
return true;
case 0x5C2130: // GTA III 1.1
game = '3', major = 1, minor = 1, region = 0, steam = false;
return true;
case 0x5C6FD0: // GTA III 1.1 (Cracked Steam Version)
case 0x9912ED: // GTA III 1.1 (Encrypted Steam Version)
game = '3', major = 1, minor = 1, region = 0, steam = true;
return true;
case 0x667BF0: // GTA VC 1.0
game = 'V', major = 1, minor = 0, region = 0, steam = false;
return true;
case 0x667C40: // GTA VC 1.1
game = 'V', major = 1, minor = 1, region = 0, steam = false;
return true;
case 0x666BA0: // GTA VC 1.1 (Cracked Steam Version)
case 0xA402ED: // GTA VC 1.1 (Encrypted Steam Version)
game = 'V', major = 1, minor = 1, region = 0, steam = true;
return true;
case 0x82457C: // GTA SA 1.0 US Cracked
case 0x824570: // GTA SA 1.0 US Compact
game = 'S', major = 1, minor = 0, region = 'U', steam = false;
cracker = injector::ReadMemory<uint8_t>(raw_ptr(0x406A20), true) == 0xE9? 'H' : 0;
return true;
case 0x8245BC: // GTA SA 1.0 EU Cracked
game = 'S', major = 1, minor = 0, region = 'E', steam = false;
return true;
case 0x8252FC: // GTA SA 1.1 US Cracked
game = 'S', major = 1, minor = 1, region = 'U', steam = false;
return true;
case 0x82533C: // GTA SA 1.1 EU Cracked
game = 'S', major = 1, minor = 1, region = 'E', steam = false;
return true;
case 0x85EC4A: // GTA SA 3.0 (Cracked Steam Version)
case 0xD3C3DB: // GTA SA 3.0 (Encrypted Steam Version)
game = 'S', major = 3, minor = 0, region = 0, steam = true;
return true;
default:
return false;
}
}
// implementation of make_new for types without
// a copy constructor
static inline raw_ptr make_new_copy(raw_ptr, std::false_type)
{
return raw_ptr();
}
// implementation of make_new for types without
// a default constructor
static inline raw_ptr make_new(std::false_type)
{
return raw_ptr();
}
// make a new instance if the type has a default constructor
static raw_ptr make_new(std::true_type)
{
original_type* tmp = new original_type();
return raw_ptr(tmp);
}
void async_read_some_at(implementation_type& impl, boost::uint64_t offset,
const MutableBufferSequence& buffers, Handler handler)
{
if (!is_open(impl))
{
this->get_io_service().post(bind_handler(handler,
boost::asio::error::bad_descriptor, 0));
return;
}
// Update the ID of the thread from which cancellation is safe.
if (impl.safe_cancellation_thread_id_ == 0)
impl.safe_cancellation_thread_id_ = ::GetCurrentThreadId();
else if (impl.safe_cancellation_thread_id_ != ::GetCurrentThreadId())
impl.safe_cancellation_thread_id_ = ~DWORD(0);
// Allocate and construct an operation to wrap the handler.
typedef read_operation<MutableBufferSequence, Handler> value_type;
typedef handler_alloc_traits<Handler, value_type> alloc_traits;
raw_handler_ptr<alloc_traits> raw_ptr(handler);
handler_ptr<alloc_traits> ptr(raw_ptr, iocp_service_, buffers, handler);
// Find first buffer of non-zero length.
boost::asio::mutable_buffer buffer;
typename MutableBufferSequence::const_iterator iter = buffers.begin();
typename MutableBufferSequence::const_iterator end = buffers.end();
for (DWORD i = 0; iter != end; ++iter, ++i)
{
buffer = boost::asio::mutable_buffer(*iter);
if (boost::asio::buffer_size(buffer) != 0)
break;
}
// A request to receive 0 bytes on a stream handle is a no-op.
if (boost::asio::buffer_size(buffer) == 0)
{
boost::asio::io_service::work work(this->get_io_service());
ptr.reset();
boost::system::error_code error;
iocp_service_.post(bind_handler(handler, error, 0));
return;
}
// Read some data.
DWORD bytes_transferred = 0;
ptr.get()->Offset = offset & 0xFFFFFFFF;
ptr.get()->OffsetHigh = (offset >> 32) & 0xFFFFFFFF;
BOOL ok = ::ReadFile(impl.handle_,
boost::asio::buffer_cast<LPVOID>(buffer),
static_cast<DWORD>(boost::asio::buffer_size(buffer)),
&bytes_transferred, ptr.get());
DWORD last_error = ::GetLastError();
if (!ok && last_error != ERROR_IO_PENDING && last_error != ERROR_MORE_DATA)
{
boost::asio::io_service::work work(this->get_io_service());
ptr.reset();
boost::system::error_code ec(last_error,
boost::asio::error::get_system_category());
iocp_service_.post(bind_handler(handler, ec, bytes_transferred));
}
else
{
ptr.release();
}
}
raw_ptr get(void)
{
assert(!"No external sources available");
return raw_ptr();
}
// Restores the previous call before the hook happened
static void restore()
{
MakeCALL(addr, raw_ptr(original()));
}
// Constructs passing information to the static variables
function_hooker(hook_type hooker)
{
hook() = hooker;
original() = MakeCALL(addr, raw_ptr(call)).get();
}
