diff options
| -rw-r--r-- | src/core/hle/service/nwm/nwm_uds.cpp | 367 | ||||
| -rw-r--r-- | src/core/hle/service/nwm/nwm_uds.h | 66 |
2 files changed, 388 insertions, 45 deletions
diff --git a/src/core/hle/service/nwm/nwm_uds.cpp b/src/core/hle/service/nwm/nwm_uds.cpp index 08fade320..ef6c5ebe3 100644 --- a/src/core/hle/service/nwm/nwm_uds.cpp +++ b/src/core/hle/service/nwm/nwm_uds.cpp @@ -1,16 +1,49 @@ -// Copyright 2014 Citra Emulator Project +// Copyright 2017 Citra Emulator Project // Licensed under GPLv2 or any later version // Refer to the license.txt file included. +#include <cstring> +#include <unordered_map> +#include <vector> #include "common/common_types.h" #include "common/logging/log.h" +#include "core/core_timing.h" #include "core/hle/kernel/event.h" +#include "core/hle/kernel/shared_memory.h" +#include "core/hle/result.h" #include "core/hle/service/nwm/nwm_uds.h" +#include "core/memory.h" namespace Service { namespace NWM { -static Kernel::SharedPtr<Kernel::Event> uds_handle_event; +// Event that is signaled every time the connection status changes. +static Kernel::SharedPtr<Kernel::Event> connection_status_event; + +// Shared memory provided by the application to store the receive buffer. +// This is not currently used. +static Kernel::SharedPtr<Kernel::SharedMemory> recv_buffer_memory; + +// Connection status of this 3DS. +static ConnectionStatus connection_status{}; + +// Node information about the current 3DS. +// TODO(Subv): Keep an array of all nodes connected to the network, +// that data has to be retransmitted in every beacon frame. +static NodeInfo node_info; + +// Mapping of bind node ids to their respective events. +static std::unordered_map<u32, Kernel::SharedPtr<Kernel::Event>> bind_node_events; + +// The WiFi network channel that the network is currently on. +// Since we're not actually interacting with physical radio waves, this is just a dummy value. +static u8 network_channel = DefaultNetworkChannel; + +// Information about the network that we're currently connected to. +static NetworkInfo network_info; + +// Event that will generate and send the 802.11 beacon frames. +static int beacon_broadcast_event; /** * NWM_UDS::Shutdown service function @@ -32,14 +65,14 @@ static void Shutdown(Interface* self) { /** * NWM_UDS::RecvBeaconBroadcastData service function + * Returns the raw beacon data for nearby networks that match the supplied WlanCommId. * Inputs: * 1 : Output buffer max size - * 2 : Unknown - * 3 : Unknown - * 4 : MAC address? - * 6-14 : Unknown, usually zero / uninitialized? - * 15 : WLan Comm ID - * 16 : This is the ID also located at offset 0xE in the CTR-generation structure. + * 2-3 : Unknown + * 4-5 : Host MAC address. + * 6-14 : Unused + * 15 : WLan Comm Id + * 16 : Id * 17 : Value 0 * 18 : Input handle * 19 : (Size<<4) | 12 @@ -77,42 +110,274 @@ static void RecvBeaconBroadcastData(Interface* self) { /** * NWM_UDS::Initialize service function * Inputs: - * 1 : Unknown - * 2-11 : Input Structure - * 12 : Unknown u16 + * 1 : Shared memory size + * 2-11 : Input NodeInfo Structure + * 12 : 2-byte Version * 13 : Value 0 - * 14 : Handle + * 14 : Shared memory handle * Outputs: * 0 : Return header * 1 : Result of function, 0 on success, otherwise error code * 2 : Value 0 - * 3 : Output handle + * 3 : Output event handle */ static void InitializeWithVersion(Interface* self) { - u32* cmd_buff = Kernel::GetCommandBuffer(); - u32 unk1 = cmd_buff[1]; - u32 unk2 = cmd_buff[12]; - u32 value = cmd_buff[13]; - u32 handle = cmd_buff[14]; - - // Because NWM service is not implemented at all, we stub the Initialize function with an error - // code instead of success to prevent games from using the service and from causing more issues. - // The error code is from a real 3DS with wifi off, thus believed to be "network disabled". - /* - cmd_buff[1] = RESULT_SUCCESS.raw; - cmd_buff[2] = 0; - cmd_buff[3] = Kernel::g_handle_table.Create(uds_handle_event) - .MoveFrom(); // TODO(purpasmart): Verify if this is a event handle - */ - cmd_buff[0] = IPC::MakeHeader(0x1B, 1, 2); - cmd_buff[1] = ResultCode(static_cast<ErrorDescription>(2), ErrorModule::UDS, - ErrorSummary::StatusChanged, ErrorLevel::Status) - .raw; - cmd_buff[2] = 0; - cmd_buff[3] = 0; - - LOG_WARNING(Service_NWM, "(STUBBED) called unk1=0x%08X, unk2=0x%08X, value=%u, handle=0x%08X", - unk1, unk2, value, handle); + IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x1B, 12, 2); + + u32 sharedmem_size = rp.Pop<u32>(); + + // Update the node information with the data the game gave us. + rp.PopRaw(node_info); + + u16 version; + rp.PopRaw(version); + Kernel::Handle sharedmem_handle = rp.PopHandle(); + + recv_buffer_memory = Kernel::g_handle_table.Get<Kernel::SharedMemory>(sharedmem_handle); + + ASSERT_MSG(recv_buffer_memory->size == sharedmem_size, "Invalid shared memory size."); + + // Reset the connection status, it contains all zeros after initialization, + // except for the actual status value. + connection_status = {}; + connection_status.status = static_cast<u32>(NetworkStatus::NotConnected); + + IPC::RequestBuilder rb = rp.MakeBuilder(1, 2); + rb.Push(RESULT_SUCCESS); + rb.PushCopyHandles(Kernel::g_handle_table.Create(connection_status_event).MoveFrom()); + + LOG_DEBUG(Service_NWM, "called sharedmem_size=0x%08X, version=0x%08X, sharedmem_handle=0x%08X", + sharedmem_size, version, sharedmem_handle); +} + +/** + * NWM_UDS::GetConnectionStatus service function. + * Returns the connection status structure for the currently open network connection. + * This structure contains information about the connection, + * like the number of connected nodes, etc. + * Inputs: + * 0 : Command header. + * Outputs: + * 0 : Return header + * 1 : Result of function, 0 on success, otherwise error code + * 2-13 : Channel of the current WiFi network connection. + */ +static void GetConnectionStatus(Interface* self) { + IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0xB, 0, 0); + IPC::RequestBuilder rb = rp.MakeBuilder(13, 0); + + rb.Push(RESULT_SUCCESS); + rb.PushRaw(connection_status); + + LOG_DEBUG(Service_NWM, "called"); +} + +/** + * NWM_UDS::Bind service function. + * Binds a BindNodeId to a data channel and retrieves a data event. + * Inputs: + * 1 : BindNodeId + * 2 : Receive buffer size. + * 3 : u8 Data channel to bind to. + * 4 : Network node id. + * Outputs: + * 0 : Return header + * 1 : Result of function, 0 on success, otherwise error code + * 2 : Copy handle descriptor. + * 3 : Data available event handle. + */ +static void Bind(Interface* self) { + IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x12, 4, 0); + + u32 bind_node_id = rp.Pop<u32>(); + u32 recv_buffer_size = rp.Pop<u32>(); + u8 data_channel; + rp.PopRaw(data_channel); + u16 network_node_id; + rp.PopRaw(network_node_id); + + // TODO(Subv): Store the data channel and verify it when receiving data frames. + + LOG_DEBUG(Service_NWM, "called"); + + if (data_channel == 0) { + IPC::RequestBuilder rb = rp.MakeBuilder(1, 0); + rb.Push(ResultCode(ErrorDescription::NotAuthorized, ErrorModule::UDS, + ErrorSummary::WrongArgument, ErrorLevel::Usage)); + return; + } + + // Create a new event for this bind node. + // TODO(Subv): Signal this event when new data is received on this data channel. + auto event = Kernel::Event::Create(Kernel::ResetType::OneShot, + "NWM::BindNodeEvent" + std::to_string(bind_node_id)); + bind_node_events[bind_node_id] = event; + + IPC::RequestBuilder rb = rp.MakeBuilder(1, 2); + + rb.Push(RESULT_SUCCESS); + rb.PushCopyHandles(Kernel::g_handle_table.Create(event).MoveFrom()); +} + +/** + * NWM_UDS::BeginHostingNetwork service function. + * Creates a network and starts broadcasting its presence. + * Inputs: + * 1 : Passphrase buffer size. + * 3 : VAddr of the NetworkInfo structure. + * 5 : VAddr of the passphrase. + * Outputs: + * 0 : Return header + * 1 : Result of function, 0 on success, otherwise error code + */ +static void BeginHostingNetwork(Interface* self) { + IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x1D, 1, 4); + + const u32 passphrase_size = rp.Pop<u32>(); + + size_t desc_size; + const VAddr network_info_address = rp.PopStaticBuffer(&desc_size, false); + ASSERT(desc_size == sizeof(NetworkInfo)); + const VAddr passphrase_address = rp.PopStaticBuffer(&desc_size, false); + ASSERT(desc_size == passphrase_size); + + // TODO(Subv): Store the passphrase and verify it when attempting a connection. + + LOG_DEBUG(Service_NWM, "called"); + + Memory::ReadBlock(network_info_address, &network_info, sizeof(NetworkInfo)); + + // The real UDS module throws a fatal error if this assert fails. + ASSERT_MSG(network_info.max_nodes > 1, "Trying to host a network of only one member."); + + connection_status.status = static_cast<u32>(NetworkStatus::ConnectedAsHost); + connection_status.max_nodes = network_info.max_nodes; + + // There's currently only one node in the network (the host). + connection_status.total_nodes = 1; + // The host is always the first node + connection_status.network_node_id = 1; + node_info.network_node_id = 1; + // Set the bit 0 in the nodes bitmask to indicate that node 1 is already taken. + connection_status.node_bitmask |= 1; + + // If the game has a preferred channel, use that instead. + if (network_info.channel != 0) + network_channel = network_info.channel; + + connection_status_event->Signal(); + + // Start broadcasting the network, send a beacon frame every 102.4ms. + CoreTiming::ScheduleEvent(msToCycles(DefaultBeaconInterval * MillisecondsPerTU), + beacon_broadcast_event, 0); + + LOG_WARNING(Service_NWM, + "An UDS network has been created, but broadcasting it is unimplemented."); + + IPC::RequestBuilder rb = rp.MakeBuilder(1, 0); + rb.Push(RESULT_SUCCESS); +} + +/** + * NWM_UDS::DestroyNetwork service function. + * Closes the network that we're currently hosting. + * Inputs: + * 0 : Command header. + * Outputs: + * 0 : Return header + * 1 : Result of function, 0 on success, otherwise error code + */ +static void DestroyNetwork(Interface* self) { + IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x08, 0, 0); + + // TODO(Subv): Find out what happens if this is called while + // no network is being hosted. + + // Unschedule the beacon broadcast event. + CoreTiming::UnscheduleEvent(beacon_broadcast_event, 0); + + connection_status.status = static_cast<u8>(NetworkStatus::NotConnected); + connection_status_event->Signal(); + + IPC::RequestBuilder rb = rp.MakeBuilder(1, 0); + + rb.Push(RESULT_SUCCESS); + + LOG_WARNING(Service_NWM, "called"); +} + +/** + * NWM_UDS::GetChannel service function. + * Returns the WiFi channel in which the network we're connected to is transmitting. + * Inputs: + * 0 : Command header. + * Outputs: + * 0 : Return header + * 1 : Result of function, 0 on success, otherwise error code + * 2 : Channel of the current WiFi network connection. + */ +static void GetChannel(Interface* self) { + IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x1A, 0, 0); + IPC::RequestBuilder rb = rp.MakeBuilder(2, 0); + + bool is_connected = connection_status.status != static_cast<u32>(NetworkStatus::NotConnected); + + u8 channel = is_connected ? network_channel : 0; + + rb.Push(RESULT_SUCCESS); + rb.PushRaw(channel); + + LOG_DEBUG(Service_NWM, "called"); +} + +/** + * NWM_UDS::SetApplicationData service function. + * Updates the application data that is being broadcast in the beacon frames + * for the network that we're hosting. + * Inputs: + * 1 : Data size. + * 3 : VAddr of the data. + * Outputs: + * 0 : Return header + * 1 : Result of function, 0 on success, otherwise error code + * 2 : Channel of the current WiFi network connection. + */ +static void SetApplicationData(Interface* self) { + IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x1A, 1, 2); + + u32 size = rp.Pop<u32>(); + + size_t desc_size; + const VAddr address = rp.PopStaticBuffer(&desc_size, false); + ASSERT(desc_size == size); + + LOG_DEBUG(Service_NWM, "called"); + + IPC::RequestBuilder rb = rp.MakeBuilder(1, 0); + + if (size > ApplicationDataSize) { + rb.Push(ResultCode(ErrorDescription::TooLarge, ErrorModule::UDS, + ErrorSummary::WrongArgument, ErrorLevel::Usage)); + return; + } + + network_info.application_data_size = size; + Memory::ReadBlock(address, network_info.application_data.data(), size); + + rb.Push(RESULT_SUCCESS); +} + +// Sends a 802.11 beacon frame with information about the current network. +static void BeaconBroadcastCallback(u64 userdata, int cycles_late) { + // Don't do anything if we're not actually hosting a network + if (connection_status.status != static_cast<u32>(NetworkStatus::ConnectedAsHost)) + return; + + // TODO(Subv): Actually generate the beacon and send it. + + // Start broadcasting the network, send a beacon frame every 102.4ms. + CoreTiming::ScheduleEvent(msToCycles(DefaultBeaconInterval * MillisecondsPerTU) - cycles_late, + beacon_broadcast_event, 0); } const Interface::FunctionInfo FunctionTable[] = { @@ -123,23 +388,23 @@ const Interface::FunctionInfo FunctionTable[] = { {0x00050040, nullptr, "EjectClient"}, {0x00060000, nullptr, "EjectSpectator"}, {0x00070080, nullptr, "UpdateNetworkAttribute"}, - {0x00080000, nullptr, "DestroyNetwork"}, + {0x00080000, DestroyNetwork, "DestroyNetwork"}, {0x00090442, nullptr, "ConnectNetwork (deprecated)"}, {0x000A0000, nullptr, "DisconnectNetwork"}, - {0x000B0000, nullptr, "GetConnectionStatus"}, + {0x000B0000, GetConnectionStatus, "GetConnectionStatus"}, {0x000D0040, nullptr, "GetNodeInformation"}, {0x000E0006, nullptr, "DecryptBeaconData (deprecated)"}, {0x000F0404, RecvBeaconBroadcastData, "RecvBeaconBroadcastData"}, - {0x00100042, nullptr, "SetApplicationData"}, + {0x00100042, SetApplicationData, "SetApplicationData"}, {0x00110040, nullptr, "GetApplicationData"}, - {0x00120100, nullptr, "Bind"}, + {0x00120100, Bind, "Bind"}, {0x00130040, nullptr, "Unbind"}, {0x001400C0, nullptr, "PullPacket"}, {0x00150080, nullptr, "SetMaxSendDelay"}, {0x00170182, nullptr, "SendTo"}, - {0x001A0000, nullptr, "GetChannel"}, + {0x001A0000, GetChannel, "GetChannel"}, {0x001B0302, InitializeWithVersion, "InitializeWithVersion"}, - {0x001D0044, nullptr, "BeginHostingNetwork"}, + {0x001D0044, BeginHostingNetwork, "BeginHostingNetwork"}, {0x001E0084, nullptr, "ConnectToNetwork"}, {0x001F0006, nullptr, "DecryptBeaconData"}, {0x00200040, nullptr, "Flush"}, @@ -148,13 +413,25 @@ const Interface::FunctionInfo FunctionTable[] = { }; NWM_UDS::NWM_UDS() { - uds_handle_event = Kernel::Event::Create(Kernel::ResetType::OneShot, "NWM::uds_handle_event"); + connection_status_event = + Kernel::Event::Create(Kernel::ResetType::OneShot, "NWM::connection_status_event"); Register(FunctionTable); + + beacon_broadcast_event = + CoreTiming::RegisterEvent("UDS::BeaconBroadcastCallback", BeaconBroadcastCallback); } NWM_UDS::~NWM_UDS() { - uds_handle_event = nullptr; + network_info = {}; + bind_node_events.clear(); + connection_status_event = nullptr; + recv_buffer_memory = nullptr; + + connection_status = {}; + connection_status.status = static_cast<u32>(NetworkStatus::NotConnected); + + CoreTiming::UnscheduleEvent(beacon_broadcast_event, 0); } } // namespace NWM diff --git a/src/core/hle/service/nwm/nwm_uds.h b/src/core/hle/service/nwm/nwm_uds.h index 55db748f6..65349f9fd 100644 --- a/src/core/hle/service/nwm/nwm_uds.h +++ b/src/core/hle/service/nwm/nwm_uds.h @@ -4,6 +4,10 @@ #pragma once +#include <array> +#include <cstddef> +#include "common/common_types.h" +#include "common/swap.h" #include "core/hle/service/service.h" // Local-WLAN service @@ -11,6 +15,68 @@ namespace Service { namespace NWM { +const size_t ApplicationDataSize = 0xC8; +const u8 DefaultNetworkChannel = 11; + +// Number of milliseconds in a TU. +const double MillisecondsPerTU = 1.024; +// Interval measured in TU, the default value is 100TU = 102.4ms +const u16 DefaultBeaconInterval = 100; + +struct NodeInfo { + u64_le friend_code_seed; + std::array<u16_le, 10> username; + INSERT_PADDING_BYTES(4); + u16_le network_node_id; + INSERT_PADDING_BYTES(6); +}; + +static_assert(sizeof(NodeInfo) == 40, "NodeInfo has incorrect size."); + +enum class NetworkStatus { + NotConnected = 3, + ConnectedAsHost = 6, + ConnectedAsClient = 9, + ConnectedAsSpectator = 10, +}; + +struct ConnectionStatus { + u32_le status; + INSERT_PADDING_WORDS(1); + u16_le network_node_id; + INSERT_PADDING_BYTES(2); + INSERT_PADDING_BYTES(32); + u8 total_nodes; + u8 max_nodes; + u16_le node_bitmask; +}; + +static_assert(sizeof(ConnectionStatus) == 0x30, "ConnectionStatus has incorrect size."); + +struct NetworkInfo { + std::array<u8, 6> host_mac_address; + u8 channel; + INSERT_PADDING_BYTES(1); + u8 initialized; + INSERT_PADDING_BYTES(3); + std::array<u8, 3> oui_value; + u8 oui_type; + // This field is received as BigEndian from the game. + u32_be wlan_comm_id; + u8 id; + INSERT_PADDING_BYTES(1); + u16_be attributes; + u32_be network_id; + u8 total_nodes; + u8 max_nodes; + INSERT_PADDING_BYTES(2); + INSERT_PADDING_BYTES(0x1F); + u8 application_data_size; + std::array<u8, ApplicationDataSize> application_data; +}; + +static_assert(sizeof(NetworkInfo) == 0x108, "NetworkInfo has incorrect size."); + class NWM_UDS final : public Interface { public: NWM_UDS(); |