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tipc: fix deserialization of buffers

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This commit is contained in:
Michael Scire 2021-04-08 17:55:25 -07:00 committed by SciresM
parent 20a7fa1588
commit e3a65b1405
2 changed files with 38 additions and 39 deletions
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30
libraries/libstratosphere/include/stratosphere/tipc/impl/tipc_impl_command_serialization.hpp
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@ -358,14 +358,13 @@ namespace ams::tipc::impl {
}
} else if constexpr (arg_type == ArgumentType::Buffer) {
/* New Buffer, increment the appropriate index. */
const auto attributes = BufferAttributes[current_info.buffer_index];
current_info.buffer_index++;
const auto attributes = BufferAttributes[current_info.buffer_index++];
if (attributes & SfBufferAttr_In) {
current_info.is_send_buffer = true;
returned_info.is_send_buffer = true;
current_info.send_map_alias_index++;
} else if (attributes & SfBufferAttr_Out) {
current_info.is_send_buffer = false;
returned_info.is_send_buffer = false;
current_info.recv_map_alias_index++;
}
} else if constexpr (arg_type == ArgumentType::ProcessId) {
@ -460,6 +459,9 @@ namespace ams::tipc::impl {
}
};
template<size_t... Ix>
struct PrintIndex;
template<typename CommandMeta>
class CommandProcessor {
public:
@ -533,13 +535,13 @@ namespace ams::tipc::impl {
constexpr auto BufferIndex = CommandMeta::InMessageBufferIndex + (Info.send_map_alias_index * MapAliasDescriptorSize / sizeof(util::BitPack32));
const svc::ipc::MessageBuffer::MapAliasDescriptor descriptor(message_buffer, BufferIndex);
return T(tipc::PointerAndSize(descriptor.GetAddress(), descriptor.GetSize()));
return T(descriptor.GetAddress(), descriptor.GetSize());
} else {
/* Input receive buffer. */
constexpr auto BufferIndex = CommandMeta::InMessageBufferIndex + ((CommandMeta::NumInBuffers + Info.recv_map_alias_index) * MapAliasDescriptorSize / sizeof(util::BitPack32));
const svc::ipc::MessageBuffer::MapAliasDescriptor descriptor(message_buffer, BufferIndex);
return T(tipc::PointerAndSize(descriptor.GetAddress(), descriptor.GetSize()));
return T(descriptor.GetAddress(), descriptor.GetSize());
}
} else if constexpr (Info.arg_type == ArgumentType::ProcessId) {
return T{ os::ProcessId{ message_buffer.GetProcessId(CommandMeta::InMessageProcessIdIndex) } };
@ -547,11 +549,6 @@ namespace ams::tipc::impl {
static_assert(!std::is_same<T, T>::value, "Invalid ArgumentType<T>");
}
}
template<size_t... Is>
static ALWAYS_INLINE ArgsType DeserializeArgumentsImpl(const svc::ipc::MessageBuffer &message_buffer, const OutRawHolderType &out_raw_holder, OutHandleHolderType &out_handles_holder, std::index_sequence<Is...>) {
return ArgsType { DeserializeArgumentImpl<Is>(message_buffer, out_raw_holder, out_handles_holder)..., };
}
public:
static ALWAYS_INLINE Result ValidateCommandFormat(const svc::ipc::MessageBuffer &message_buffer) {
/* Validate the message header. */
@ -568,8 +565,9 @@ namespace ams::tipc::impl {
return ResultSuccess();
}
static ALWAYS_INLINE ArgsType DeserializeArguments(const svc::ipc::MessageBuffer &message_buffer, const OutRawHolderType &out_raw_holder, OutHandleHolderType &out_handles_holder) {
return DeserializeArgumentsImpl(message_buffer, out_raw_holder, out_handles_holder, std::make_index_sequence<std::tuple_size<ArgsType>::value>{});
template<size_t Ix>
static ALWAYS_INLINE auto DeserializeArgument(const svc::ipc::MessageBuffer &message_buffer, const OutRawHolderType &out_raw_holder, OutHandleHolderType &out_handles_holder) {
return DeserializeArgumentImpl<Ix>(message_buffer, out_raw_holder, out_handles_holder);
}
static ALWAYS_INLINE void SerializeResults(const svc::ipc::MessageBuffer &message_buffer, const Result &result, const OutRawHolderType &out_raw_holder, const OutHandleHolderType &out_handles_holder) {
@ -619,12 +617,10 @@ namespace ams::tipc::impl {
typename Processor::OutRawHolderType out_raw_holder;
typename Processor::OutHandleHolderType out_handles_holder;
const Result command_result = [&]<size_t... Ix>(std::index_sequence<Ix...>) ALWAYS_INLINE_LAMBDA {
auto args_tuple = Processor::DeserializeArguments(message_buffer, out_raw_holder, out_handles_holder);
if constexpr (ReturnsResult) {
return (object->*ServiceCommandImpl)(std::forward<typename std::tuple_element<Ix, TrueArgumentsTuple>::type>(std::get<Ix>(args_tuple))...);
return (object->*ServiceCommandImpl)(Processor::template DeserializeArgument<Ix>(message_buffer, out_raw_holder, out_handles_holder)...);
} else {
(object->*ServiceCommandImpl)(std::forward<typename std::tuple_element<Ix, TrueArgumentsTuple>::type>(std::get<Ix>(args_tuple))...);
(object->*ServiceCommandImpl)(Processor::template DeserializeArgument<Ix>(message_buffer, out_raw_holder, out_handles_holder)...);
return ResultSuccess();
}
}(std::make_index_sequence<std::tuple_size<typename CommandMeta::ArgsType>::value>());

37
libraries/libstratosphere/source/_test/test_tipc_serializer.cpp
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@ -24,6 +24,12 @@
AMS_TIPC_DEFINE_INTERFACE(ams::_test::impl, IUserInterface, AMS_TEST_I_USER_INTERFACE_INTERFACE_INFO)
#define AMS_TEST_I_MANAGER_INTERFACE_INTERFACE_INFO(C, H) \
AMS_TIPC_METHOD_INFO(C, H, 0, Result, RegisterProcess, (os::ProcessId process_id, const tipc::InBuffer acid_sac, const tipc::InBuffer aci_sac), (process_id, acid_sac, aci_sac)) \
AMS_TIPC_METHOD_INFO(C, H, 1, Result, UnregisterProcess, (os::ProcessId process_id), (process_id))
AMS_TIPC_DEFINE_INTERFACE(ams::_test::impl, IManagerInterface, AMS_TEST_I_MANAGER_INTERFACE_INTERFACE_INFO)
namespace ams::_test {
@ -33,26 +39,17 @@ namespace ams::_test {
Result GetServiceHandle(tipc::OutMoveHandle out_h, sm::ServiceName service);
Result RegisterService(tipc::OutMoveHandle out_h, sm::ServiceName service, u32 max_sessions, bool is_light);
Result UnregisterService(sm::ServiceName service);
Result ProcessDefaultServiceCommand(const svc::ipc::MessageBuffer &message_buffer);
};
static_assert(impl::IsIUserInterface<UserInterfaceFacade>);
Result TestManualDispatch(UserInterfaceFacade *facade) {
svc::ipc::MessageBuffer message_buffer(svc::ipc::GetMessageBuffer());
switch (svc::ipc::MessageBuffer::MessageHeader(message_buffer).GetTag()) {
case 16:
return tipc::impl::InvokeServiceCommandImpl<16, &UserInterfaceFacade::RegisterClient, UserInterfaceFacade>(facade, message_buffer);
case 17:
return tipc::impl::InvokeServiceCommandImpl<17, &UserInterfaceFacade::GetServiceHandle, UserInterfaceFacade>(facade, message_buffer);
case 18:
return tipc::impl::InvokeServiceCommandImpl<18, &UserInterfaceFacade::RegisterService, UserInterfaceFacade>(facade, message_buffer);
case 19:
return tipc::impl::InvokeServiceCommandImpl<19, &UserInterfaceFacade::UnregisterService, UserInterfaceFacade>(facade, message_buffer);
default:
return tipc::ResultInvalidMethod();
}
}
class ManagerInterfaceFacade {
public:
Result RegisterProcess(os::ProcessId process_id, const tipc::InBuffer acid_sac, const tipc::InBuffer aci_sac);
Result UnregisterProcess(os::ProcessId process_id);
};
static_assert(impl::IsIManagerInterface<ManagerInterfaceFacade>);
using UserInterfaceObject = ::ams::tipc::ServiceObject<impl::IUserInterface, UserInterfaceFacade>;
@ -60,5 +57,11 @@ namespace ams::_test {
return object->ProcessRequest();
}
using ManagerInterfaceObject = ::ams::tipc::ServiceObject<impl::IManagerInterface, ManagerInterfaceFacade>;
Result TestManagerDispatch(ManagerInterfaceObject *object) {
return object->ProcessRequest();
}
}