Merge pull request #2628 from Subv/uds
Services/UDS: Initial support for hosting local-wlan networks.
This commit is contained in:
commit
26745f28ea
2 changed files with 386 additions and 43 deletions
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@ -1,16 +1,49 @@
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// Copyright 2014 Citra Emulator Project
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// Copyright 2017 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include <cstring>
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#include <unordered_map>
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#include <vector>
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#include "common/common_types.h"
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#include "common/logging/log.h"
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#include "core/core_timing.h"
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#include "core/hle/kernel/event.h"
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#include "core/hle/kernel/shared_memory.h"
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#include "core/hle/result.h"
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#include "core/hle/service/nwm/nwm_uds.h"
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#include "core/memory.h"
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namespace Service {
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namespace NWM {
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static Kernel::SharedPtr<Kernel::Event> uds_handle_event;
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// Event that is signaled every time the connection status changes.
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static Kernel::SharedPtr<Kernel::Event> connection_status_event;
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// Shared memory provided by the application to store the receive buffer.
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// This is not currently used.
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static Kernel::SharedPtr<Kernel::SharedMemory> recv_buffer_memory;
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// Connection status of this 3DS.
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static ConnectionStatus connection_status{};
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// Node information about the current 3DS.
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// TODO(Subv): Keep an array of all nodes connected to the network,
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// that data has to be retransmitted in every beacon frame.
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static NodeInfo node_info;
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// Mapping of bind node ids to their respective events.
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static std::unordered_map<u32, Kernel::SharedPtr<Kernel::Event>> bind_node_events;
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// The WiFi network channel that the network is currently on.
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// Since we're not actually interacting with physical radio waves, this is just a dummy value.
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static u8 network_channel = DefaultNetworkChannel;
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// Information about the network that we're currently connected to.
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static NetworkInfo network_info;
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// Event that will generate and send the 802.11 beacon frames.
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static int beacon_broadcast_event;
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/**
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* NWM_UDS::Shutdown service function
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@ -32,14 +65,14 @@ static void Shutdown(Interface* self) {
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/**
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* NWM_UDS::RecvBeaconBroadcastData service function
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* Returns the raw beacon data for nearby networks that match the supplied WlanCommId.
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* Inputs:
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* 1 : Output buffer max size
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* 2 : Unknown
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* 3 : Unknown
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* 4 : MAC address?
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* 6-14 : Unknown, usually zero / uninitialized?
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* 15 : WLan Comm ID
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* 16 : This is the ID also located at offset 0xE in the CTR-generation structure.
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* 2-3 : Unknown
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* 4-5 : Host MAC address.
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* 6-14 : Unused
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* 15 : WLan Comm Id
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* 16 : Id
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* 17 : Value 0
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* 18 : Input handle
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* 19 : (Size<<4) | 12
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@ -77,42 +110,274 @@ static void RecvBeaconBroadcastData(Interface* self) {
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/**
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* NWM_UDS::Initialize service function
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* Inputs:
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* 1 : Unknown
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* 2-11 : Input Structure
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* 12 : Unknown u16
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* 1 : Shared memory size
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* 2-11 : Input NodeInfo Structure
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* 12 : 2-byte Version
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* 13 : Value 0
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* 14 : Handle
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* 14 : Shared memory handle
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* Outputs:
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* 0 : Return header
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* 1 : Result of function, 0 on success, otherwise error code
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* 2 : Value 0
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* 3 : Output handle
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* 3 : Output event handle
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*/
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static void InitializeWithVersion(Interface* self) {
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u32* cmd_buff = Kernel::GetCommandBuffer();
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u32 unk1 = cmd_buff[1];
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u32 unk2 = cmd_buff[12];
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u32 value = cmd_buff[13];
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u32 handle = cmd_buff[14];
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IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x1B, 12, 2);
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// Because NWM service is not implemented at all, we stub the Initialize function with an error
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// code instead of success to prevent games from using the service and from causing more issues.
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// The error code is from a real 3DS with wifi off, thus believed to be "network disabled".
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/*
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cmd_buff[1] = RESULT_SUCCESS.raw;
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cmd_buff[2] = 0;
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cmd_buff[3] = Kernel::g_handle_table.Create(uds_handle_event)
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.MoveFrom(); // TODO(purpasmart): Verify if this is a event handle
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*/
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cmd_buff[0] = IPC::MakeHeader(0x1B, 1, 2);
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cmd_buff[1] = ResultCode(static_cast<ErrorDescription>(2), ErrorModule::UDS,
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ErrorSummary::StatusChanged, ErrorLevel::Status)
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.raw;
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cmd_buff[2] = 0;
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cmd_buff[3] = 0;
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u32 sharedmem_size = rp.Pop<u32>();
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LOG_WARNING(Service_NWM, "(STUBBED) called unk1=0x%08X, unk2=0x%08X, value=%u, handle=0x%08X",
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unk1, unk2, value, handle);
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// Update the node information with the data the game gave us.
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rp.PopRaw(node_info);
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u16 version;
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rp.PopRaw(version);
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Kernel::Handle sharedmem_handle = rp.PopHandle();
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recv_buffer_memory = Kernel::g_handle_table.Get<Kernel::SharedMemory>(sharedmem_handle);
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ASSERT_MSG(recv_buffer_memory->size == sharedmem_size, "Invalid shared memory size.");
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// Reset the connection status, it contains all zeros after initialization,
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// except for the actual status value.
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connection_status = {};
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connection_status.status = static_cast<u32>(NetworkStatus::NotConnected);
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IPC::RequestBuilder rb = rp.MakeBuilder(1, 2);
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rb.Push(RESULT_SUCCESS);
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rb.PushCopyHandles(Kernel::g_handle_table.Create(connection_status_event).MoveFrom());
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LOG_DEBUG(Service_NWM, "called sharedmem_size=0x%08X, version=0x%08X, sharedmem_handle=0x%08X",
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sharedmem_size, version, sharedmem_handle);
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}
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/**
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* NWM_UDS::GetConnectionStatus service function.
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* Returns the connection status structure for the currently open network connection.
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* This structure contains information about the connection,
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* like the number of connected nodes, etc.
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* Inputs:
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* 0 : Command header.
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* Outputs:
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* 0 : Return header
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* 1 : Result of function, 0 on success, otherwise error code
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* 2-13 : Channel of the current WiFi network connection.
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*/
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static void GetConnectionStatus(Interface* self) {
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IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0xB, 0, 0);
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IPC::RequestBuilder rb = rp.MakeBuilder(13, 0);
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rb.Push(RESULT_SUCCESS);
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rb.PushRaw(connection_status);
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LOG_DEBUG(Service_NWM, "called");
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}
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/**
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* NWM_UDS::Bind service function.
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* Binds a BindNodeId to a data channel and retrieves a data event.
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* Inputs:
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* 1 : BindNodeId
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* 2 : Receive buffer size.
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* 3 : u8 Data channel to bind to.
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* 4 : Network node id.
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* Outputs:
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* 0 : Return header
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* 1 : Result of function, 0 on success, otherwise error code
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* 2 : Copy handle descriptor.
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* 3 : Data available event handle.
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*/
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static void Bind(Interface* self) {
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IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x12, 4, 0);
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u32 bind_node_id = rp.Pop<u32>();
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u32 recv_buffer_size = rp.Pop<u32>();
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u8 data_channel;
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rp.PopRaw(data_channel);
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u16 network_node_id;
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rp.PopRaw(network_node_id);
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// TODO(Subv): Store the data channel and verify it when receiving data frames.
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LOG_DEBUG(Service_NWM, "called");
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if (data_channel == 0) {
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IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
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rb.Push(ResultCode(ErrorDescription::NotAuthorized, ErrorModule::UDS,
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ErrorSummary::WrongArgument, ErrorLevel::Usage));
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return;
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}
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// Create a new event for this bind node.
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// TODO(Subv): Signal this event when new data is received on this data channel.
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auto event = Kernel::Event::Create(Kernel::ResetType::OneShot,
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"NWM::BindNodeEvent" + std::to_string(bind_node_id));
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bind_node_events[bind_node_id] = event;
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IPC::RequestBuilder rb = rp.MakeBuilder(1, 2);
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rb.Push(RESULT_SUCCESS);
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rb.PushCopyHandles(Kernel::g_handle_table.Create(event).MoveFrom());
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}
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/**
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* NWM_UDS::BeginHostingNetwork service function.
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* Creates a network and starts broadcasting its presence.
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* Inputs:
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* 1 : Passphrase buffer size.
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* 3 : VAddr of the NetworkInfo structure.
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* 5 : VAddr of the passphrase.
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* Outputs:
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* 0 : Return header
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* 1 : Result of function, 0 on success, otherwise error code
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*/
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static void BeginHostingNetwork(Interface* self) {
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IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x1D, 1, 4);
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const u32 passphrase_size = rp.Pop<u32>();
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size_t desc_size;
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const VAddr network_info_address = rp.PopStaticBuffer(&desc_size, false);
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ASSERT(desc_size == sizeof(NetworkInfo));
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const VAddr passphrase_address = rp.PopStaticBuffer(&desc_size, false);
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ASSERT(desc_size == passphrase_size);
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// TODO(Subv): Store the passphrase and verify it when attempting a connection.
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LOG_DEBUG(Service_NWM, "called");
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Memory::ReadBlock(network_info_address, &network_info, sizeof(NetworkInfo));
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// The real UDS module throws a fatal error if this assert fails.
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ASSERT_MSG(network_info.max_nodes > 1, "Trying to host a network of only one member.");
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connection_status.status = static_cast<u32>(NetworkStatus::ConnectedAsHost);
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connection_status.max_nodes = network_info.max_nodes;
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// There's currently only one node in the network (the host).
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connection_status.total_nodes = 1;
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// The host is always the first node
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connection_status.network_node_id = 1;
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node_info.network_node_id = 1;
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// Set the bit 0 in the nodes bitmask to indicate that node 1 is already taken.
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connection_status.node_bitmask |= 1;
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// If the game has a preferred channel, use that instead.
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if (network_info.channel != 0)
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network_channel = network_info.channel;
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connection_status_event->Signal();
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// Start broadcasting the network, send a beacon frame every 102.4ms.
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CoreTiming::ScheduleEvent(msToCycles(DefaultBeaconInterval * MillisecondsPerTU),
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beacon_broadcast_event, 0);
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LOG_WARNING(Service_NWM,
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"An UDS network has been created, but broadcasting it is unimplemented.");
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IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
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rb.Push(RESULT_SUCCESS);
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}
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/**
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* NWM_UDS::DestroyNetwork service function.
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* Closes the network that we're currently hosting.
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* Inputs:
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* 0 : Command header.
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* Outputs:
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* 0 : Return header
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* 1 : Result of function, 0 on success, otherwise error code
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*/
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static void DestroyNetwork(Interface* self) {
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IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x08, 0, 0);
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// TODO(Subv): Find out what happens if this is called while
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// no network is being hosted.
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// Unschedule the beacon broadcast event.
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CoreTiming::UnscheduleEvent(beacon_broadcast_event, 0);
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connection_status.status = static_cast<u8>(NetworkStatus::NotConnected);
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connection_status_event->Signal();
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IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
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rb.Push(RESULT_SUCCESS);
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LOG_WARNING(Service_NWM, "called");
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}
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/**
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* NWM_UDS::GetChannel service function.
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* Returns the WiFi channel in which the network we're connected to is transmitting.
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* Inputs:
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* 0 : Command header.
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* Outputs:
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* 0 : Return header
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* 1 : Result of function, 0 on success, otherwise error code
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* 2 : Channel of the current WiFi network connection.
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*/
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static void GetChannel(Interface* self) {
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IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x1A, 0, 0);
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IPC::RequestBuilder rb = rp.MakeBuilder(2, 0);
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bool is_connected = connection_status.status != static_cast<u32>(NetworkStatus::NotConnected);
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u8 channel = is_connected ? network_channel : 0;
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rb.Push(RESULT_SUCCESS);
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rb.PushRaw(channel);
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LOG_DEBUG(Service_NWM, "called");
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}
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/**
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* NWM_UDS::SetApplicationData service function.
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* Updates the application data that is being broadcast in the beacon frames
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* for the network that we're hosting.
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* Inputs:
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* 1 : Data size.
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* 3 : VAddr of the data.
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* Outputs:
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* 0 : Return header
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* 1 : Result of function, 0 on success, otherwise error code
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* 2 : Channel of the current WiFi network connection.
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*/
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static void SetApplicationData(Interface* self) {
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IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x1A, 1, 2);
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u32 size = rp.Pop<u32>();
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size_t desc_size;
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const VAddr address = rp.PopStaticBuffer(&desc_size, false);
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ASSERT(desc_size == size);
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LOG_DEBUG(Service_NWM, "called");
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IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
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if (size > ApplicationDataSize) {
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rb.Push(ResultCode(ErrorDescription::TooLarge, ErrorModule::UDS,
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ErrorSummary::WrongArgument, ErrorLevel::Usage));
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return;
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}
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network_info.application_data_size = size;
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Memory::ReadBlock(address, network_info.application_data.data(), size);
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rb.Push(RESULT_SUCCESS);
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}
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// Sends a 802.11 beacon frame with information about the current network.
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static void BeaconBroadcastCallback(u64 userdata, int cycles_late) {
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// Don't do anything if we're not actually hosting a network
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if (connection_status.status != static_cast<u32>(NetworkStatus::ConnectedAsHost))
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return;
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// TODO(Subv): Actually generate the beacon and send it.
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// Start broadcasting the network, send a beacon frame every 102.4ms.
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CoreTiming::ScheduleEvent(msToCycles(DefaultBeaconInterval * MillisecondsPerTU) - cycles_late,
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beacon_broadcast_event, 0);
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}
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const Interface::FunctionInfo FunctionTable[] = {
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@ -123,23 +388,23 @@ const Interface::FunctionInfo FunctionTable[] = {
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{0x00050040, nullptr, "EjectClient"},
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{0x00060000, nullptr, "EjectSpectator"},
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{0x00070080, nullptr, "UpdateNetworkAttribute"},
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{0x00080000, nullptr, "DestroyNetwork"},
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{0x00080000, DestroyNetwork, "DestroyNetwork"},
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{0x00090442, nullptr, "ConnectNetwork (deprecated)"},
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{0x000A0000, nullptr, "DisconnectNetwork"},
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{0x000B0000, nullptr, "GetConnectionStatus"},
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{0x000B0000, GetConnectionStatus, "GetConnectionStatus"},
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{0x000D0040, nullptr, "GetNodeInformation"},
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{0x000E0006, nullptr, "DecryptBeaconData (deprecated)"},
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{0x000F0404, RecvBeaconBroadcastData, "RecvBeaconBroadcastData"},
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{0x00100042, nullptr, "SetApplicationData"},
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{0x00100042, SetApplicationData, "SetApplicationData"},
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{0x00110040, nullptr, "GetApplicationData"},
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{0x00120100, nullptr, "Bind"},
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{0x00120100, Bind, "Bind"},
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{0x00130040, nullptr, "Unbind"},
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{0x001400C0, nullptr, "PullPacket"},
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{0x00150080, nullptr, "SetMaxSendDelay"},
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{0x00170182, nullptr, "SendTo"},
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{0x001A0000, nullptr, "GetChannel"},
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{0x001A0000, GetChannel, "GetChannel"},
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{0x001B0302, InitializeWithVersion, "InitializeWithVersion"},
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{0x001D0044, nullptr, "BeginHostingNetwork"},
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{0x001D0044, BeginHostingNetwork, "BeginHostingNetwork"},
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{0x001E0084, nullptr, "ConnectToNetwork"},
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{0x001F0006, nullptr, "DecryptBeaconData"},
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{0x00200040, nullptr, "Flush"},
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@ -148,13 +413,25 @@ const Interface::FunctionInfo FunctionTable[] = {
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};
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NWM_UDS::NWM_UDS() {
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uds_handle_event = Kernel::Event::Create(Kernel::ResetType::OneShot, "NWM::uds_handle_event");
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connection_status_event =
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Kernel::Event::Create(Kernel::ResetType::OneShot, "NWM::connection_status_event");
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Register(FunctionTable);
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beacon_broadcast_event =
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CoreTiming::RegisterEvent("UDS::BeaconBroadcastCallback", BeaconBroadcastCallback);
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}
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NWM_UDS::~NWM_UDS() {
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uds_handle_event = nullptr;
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network_info = {};
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bind_node_events.clear();
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connection_status_event = nullptr;
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recv_buffer_memory = nullptr;
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connection_status = {};
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connection_status.status = static_cast<u32>(NetworkStatus::NotConnected);
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CoreTiming::UnscheduleEvent(beacon_broadcast_event, 0);
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}
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} // namespace NWM
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@ -4,6 +4,10 @@
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#pragma once
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#include <array>
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#include <cstddef>
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#include "common/common_types.h"
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#include "common/swap.h"
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#include "core/hle/service/service.h"
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// Local-WLAN service
|
||||
|
@ -11,6 +15,68 @@
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namespace Service {
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namespace NWM {
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||||
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||||
const size_t ApplicationDataSize = 0xC8;
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const u8 DefaultNetworkChannel = 11;
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// Number of milliseconds in a TU.
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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();
|
||||
|
|
Loading…
Reference in a new issue