Merge pull request #2661 from Subv/uds5
Services/UDS: Generate 802.11 beacon frames when a network is open.
This commit is contained in:
bunnei
GitHub
commit
152a012373
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@ -139,6 +139,7 @@ set(SRCS
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hle/service/nwm/nwm_soc.cpp
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hle/service/nwm/nwm_tst.cpp
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hle/service/nwm/nwm_uds.cpp
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hle/service/nwm/uds_beacon.cpp
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hle/service/pm_app.cpp
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hle/service/ptm/ptm.cpp
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hle/service/ptm/ptm_gets.cpp
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@ -326,6 +327,7 @@ set(HEADERS
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hle/service/nwm/nwm_soc.h
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hle/service/nwm/nwm_tst.h
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hle/service/nwm/nwm_uds.h
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hle/service/nwm/uds_beacon.h
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hle/service/pm_app.h
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hle/service/ptm/ptm.h
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hle/service/ptm/ptm_gets.h
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@ -2,6 +2,7 @@
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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 <array>
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#include <cstring>
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#include <unordered_map>
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#include <vector>
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@ -12,6 +13,7 @@
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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/hle/service/nwm/uds_beacon.h"
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#include "core/memory.h"
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namespace Service {
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@ -27,10 +29,12 @@ 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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/* Node information about the current network.
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* The amount of elements in this vector is always the maximum number
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* of nodes specified in the network configuration.
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* The first node is always the host, so this always contains at least 1 entry.
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*/
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static NodeList node_info(1);
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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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@ -82,29 +86,70 @@ static void Shutdown(Interface* self) {
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* 1 : Result of function, 0 on success, otherwise error code
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*/
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static void RecvBeaconBroadcastData(Interface* self) {
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u32* cmd_buff = Kernel::GetCommandBuffer();
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u32 out_buffer_size = cmd_buff[1];
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u32 unk1 = cmd_buff[2];
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u32 unk2 = cmd_buff[3];
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u32 mac_address = cmd_buff[4];
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IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x0F, 16, 4);
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u32 unk3 = cmd_buff[6];
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u32 out_buffer_size = rp.Pop<u32>();
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u32 unk1 = rp.Pop<u32>();
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u32 unk2 = rp.Pop<u32>();
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u32 wlan_comm_id = cmd_buff[15];
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u32 ctr_gen_id = cmd_buff[16];
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u32 value = cmd_buff[17];
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u32 input_handle = cmd_buff[18];
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u32 new_buffer_size = cmd_buff[19];
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u32 out_buffer_ptr = cmd_buff[20];
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MacAddress mac_address;
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rp.PopRaw(mac_address);
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cmd_buff[1] = RESULT_SUCCESS.raw;
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rp.Skip(9, false);
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LOG_WARNING(Service_NWM,
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"(STUBBED) called out_buffer_size=0x%08X, unk1=0x%08X, unk2=0x%08X,"
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"mac_address=0x%08X, unk3=0x%08X, wlan_comm_id=0x%08X, ctr_gen_id=0x%08X,"
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"value=%u, input_handle=0x%08X, new_buffer_size=0x%08X, out_buffer_ptr=0x%08X",
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out_buffer_size, unk1, unk2, mac_address, unk3, wlan_comm_id, ctr_gen_id, value,
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input_handle, new_buffer_size, out_buffer_ptr);
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u32 wlan_comm_id = rp.Pop<u32>();
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u32 id = rp.Pop<u32>();
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Kernel::Handle input_handle = rp.PopHandle();
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size_t desc_size;
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const VAddr out_buffer_ptr = rp.PopMappedBuffer(&desc_size);
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ASSERT(desc_size == out_buffer_size);
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VAddr current_buffer_pos = out_buffer_ptr;
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u32 total_size = sizeof(BeaconDataReplyHeader);
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// Retrieve all beacon frames that were received from the desired mac address.
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std::deque<WifiPacket> beacons =
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GetReceivedPackets(WifiPacket::PacketType::Beacon, mac_address);
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BeaconDataReplyHeader data_reply_header{};
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data_reply_header.total_entries = beacons.size();
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data_reply_header.max_output_size = out_buffer_size;
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Memory::WriteBlock(current_buffer_pos, &data_reply_header, sizeof(BeaconDataReplyHeader));
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current_buffer_pos += sizeof(BeaconDataReplyHeader);
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// Write each of the received beacons into the buffer
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for (const auto& beacon : beacons) {
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BeaconEntryHeader entry{};
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// TODO(Subv): Figure out what this size is used for.
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entry.unk_size = sizeof(BeaconEntryHeader) + beacon.data.size();
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entry.total_size = sizeof(BeaconEntryHeader) + beacon.data.size();
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entry.wifi_channel = beacon.channel;
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entry.header_size = sizeof(BeaconEntryHeader);
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entry.mac_address = beacon.transmitter_address;
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ASSERT(current_buffer_pos < out_buffer_ptr + out_buffer_size);
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Memory::WriteBlock(current_buffer_pos, &entry, sizeof(BeaconEntryHeader));
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current_buffer_pos += sizeof(BeaconEntryHeader);
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Memory::WriteBlock(current_buffer_pos, beacon.data.data(), beacon.data.size());
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current_buffer_pos += beacon.data.size();
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total_size += sizeof(BeaconEntryHeader) + beacon.data.size();
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}
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// Update the total size in the structure and write it to the buffer again.
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data_reply_header.total_size = total_size;
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Memory::WriteBlock(out_buffer_ptr, &data_reply_header, sizeof(BeaconDataReplyHeader));
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IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
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rb.Push(RESULT_SUCCESS);
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LOG_DEBUG(Service_NWM, "called out_buffer_size=0x%08X, wlan_comm_id=0x%08X, id=0x%08X,"
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"input_handle=0x%08X, out_buffer_ptr=0x%08X, unk1=0x%08X, unk2=0x%08X",
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out_buffer_size, wlan_comm_id, id, input_handle, out_buffer_ptr, unk1, unk2);
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}
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/**
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@ -127,10 +172,10 @@ static void InitializeWithVersion(Interface* self) {
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u32 sharedmem_size = rp.Pop<u32>();
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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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rp.PopRaw(node_info[0]);
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u16 version = rp.Pop<u16>();
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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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@ -191,10 +236,8 @@ static void Bind(Interface* self) {
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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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u8 data_channel = rp.Pop<u8>();
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u16 network_node_id = rp.Pop<u16>();
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// TODO(Subv): Store the data channel and verify it when receiving data frames.
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@ -251,13 +294,25 @@ static void BeginHostingNetwork(Interface* self) {
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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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// Ensure the application data size is less than the maximum value.
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ASSERT_MSG(network_info.application_data_size <= ApplicationDataSize, "Data size is too big.");
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// Set up basic information for this network.
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network_info.oui_value = NintendoOUI;
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network_info.oui_type = static_cast<u8>(NintendoTagId::NetworkInfo);
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connection_status.max_nodes = network_info.max_nodes;
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// Resize the nodes list to hold max_nodes.
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node_info.resize(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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network_info.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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node_info[0].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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@ -325,7 +380,7 @@ static void GetChannel(Interface* self) {
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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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rb.Push(channel);
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LOG_DEBUG(Service_NWM, "called");
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}
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@ -373,7 +428,8 @@ static void BeaconBroadcastCallback(u64 userdata, int cycles_late) {
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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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// TODO(Subv): Actually send the beacon.
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std::vector<u8> frame = GenerateBeaconFrame(network_info, node_info);
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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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@ -6,6 +6,7 @@
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#include <array>
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#include <cstddef>
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#include <vector>
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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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@ -33,6 +34,8 @@ struct NodeInfo {
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static_assert(sizeof(NodeInfo) == 40, "NodeInfo has incorrect size.");
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using NodeList = std::vector<NodeInfo>;
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enum class NetworkStatus {
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NotConnected = 3,
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ConnectedAsHost = 6,
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@ -75,6 +78,8 @@ struct NetworkInfo {
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std::array<u8, ApplicationDataSize> application_data;
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};
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static_assert(offsetof(NetworkInfo, oui_value) == 0xC, "oui_value is at the wrong offset.");
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static_assert(offsetof(NetworkInfo, wlan_comm_id) == 0x10, "wlancommid is at the wrong offset.");
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static_assert(sizeof(NetworkInfo) == 0x108, "NetworkInfo has incorrect size.");
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class NWM_UDS final : public Interface {
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@ -0,0 +1,333 @@
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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 "core/hle/service/nwm/nwm_uds.h"
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#include "core/hle/service/nwm/uds_beacon.h"
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#include <cryptopp/aes.h>
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#include <cryptopp/md5.h>
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#include <cryptopp/modes.h>
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#include <cryptopp/sha.h>
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namespace Service {
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namespace NWM {
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// 802.11 broadcast MAC address
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constexpr MacAddress BroadcastMac = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
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constexpr u64 DefaultNetworkUptime = 900000000; // 15 minutes in microseconds.
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// Note: These values were taken from a packet capture of an o3DS XL
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// broadcasting a Super Smash Bros. 4 lobby.
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constexpr u16 DefaultExtraCapabilities = 0x0431;
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// Size of the SSID broadcast by an UDS beacon frame.
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constexpr u8 UDSBeaconSSIDSize = 8;
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// The maximum size of the data stored in the EncryptedData0 tag (24).
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constexpr u32 EncryptedDataSizeCutoff = 0xFA;
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/**
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* NWM Beacon data encryption key, taken from the NWM module code.
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* We stub this with an all-zeros key as that is enough for Citra's purpose.
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* The real key can be used here to generate beacons that will be accepted by
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* a real 3ds.
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*/
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constexpr std::array<u8, CryptoPP::AES::BLOCKSIZE> nwm_beacon_key = {};
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/**
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* Generates a buffer with the fixed parameters of an 802.11 Beacon frame
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* using dummy values.
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* @returns A buffer with the fixed parameters of the beacon frame.
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*/
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std::vector<u8> GenerateFixedParameters() {
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std::vector<u8> buffer(sizeof(BeaconFrameHeader));
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BeaconFrameHeader header{};
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// Use a fixed default time for now.
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// TODO(Subv): Perhaps use the difference between now and the time the network was started?
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header.timestamp = DefaultNetworkUptime;
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header.beacon_interval = DefaultBeaconInterval;
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header.capabilities = DefaultExtraCapabilities;
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std::memcpy(buffer.data(), &header, sizeof(header));
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return buffer;
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}
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/**
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* Generates an SSID tag of an 802.11 Beacon frame with an 8-byte all-zero SSID value.
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* @returns A buffer with the SSID tag.
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*/
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std::vector<u8> GenerateSSIDTag() {
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std::vector<u8> buffer(sizeof(TagHeader) + UDSBeaconSSIDSize);
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TagHeader tag_header{};
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tag_header.tag_id = static_cast<u8>(TagId::SSID);
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tag_header.length = UDSBeaconSSIDSize;
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std::memcpy(buffer.data(), &tag_header, sizeof(TagHeader));
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// The rest of the buffer is already filled with zeros.
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return buffer;
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}
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/**
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* Generates a buffer with the basic tagged parameters of an 802.11 Beacon frame
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* such as SSID, Rate Information, Country Information, etc.
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* @returns A buffer with the tagged parameters of the beacon frame.
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*/
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std::vector<u8> GenerateBasicTaggedParameters() {
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// Append the SSID tag
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std::vector<u8> buffer = GenerateSSIDTag();
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// TODO(Subv): Add the SupportedRates tag.
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// TODO(Subv): Add the DSParameterSet tag.
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// TODO(Subv): Add the TrafficIndicationMap tag.
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// TODO(Subv): Add the CountryInformation tag.
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// TODO(Subv): Add the ERPInformation tag.
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return buffer;
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}
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/**
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* Generates a buffer with the Dummy Nintendo tag.
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* It is currently unknown what this tag does.
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* TODO(Subv): Figure out if this is needed and what it does.
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* @returns A buffer with the Nintendo tagged parameters of the beacon frame.
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*/
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std::vector<u8> GenerateNintendoDummyTag() {
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// Note: These values were taken from a packet capture of an o3DS XL
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// broadcasting a Super Smash Bros. 4 lobby.
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constexpr std::array<u8, 3> dummy_data = {0x0A, 0x00, 0x00};
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DummyTag tag{};
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tag.header.tag_id = static_cast<u8>(TagId::VendorSpecific);
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tag.header.length = sizeof(DummyTag) - sizeof(TagHeader);
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tag.oui_type = static_cast<u8>(NintendoTagId::Dummy);
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tag.oui = NintendoOUI;
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tag.data = dummy_data;
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std::vector<u8> buffer(sizeof(DummyTag));
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std::memcpy(buffer.data(), &tag, sizeof(DummyTag));
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return buffer;
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}
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/**
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* Generates a buffer with the Network Info Nintendo tag.
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* This tag contains the network information of the network that is being broadcast.
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* It also contains the application data provided by the application that opened the network.
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* @returns A buffer with the Nintendo network info parameter of the beacon frame.
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*/
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std::vector<u8> GenerateNintendoNetworkInfoTag(const NetworkInfo& network_info) {
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NetworkInfoTag tag{};
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tag.header.tag_id = static_cast<u8>(TagId::VendorSpecific);
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tag.header.length =
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sizeof(NetworkInfoTag) - sizeof(TagHeader) + network_info.application_data_size;
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tag.appdata_size = network_info.application_data_size;
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// Set the hash to zero initially, it will be updated once we calculate it.
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tag.sha_hash = {};
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// Ensure the network structure has the correct OUI and OUI type.
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ASSERT(network_info.oui_type == static_cast<u8>(NintendoTagId::NetworkInfo));
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ASSERT(network_info.oui_value == NintendoOUI);
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// Ensure the application data size is less than the maximum value.
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ASSERT_MSG(network_info.application_data_size <= ApplicationDataSize, "Data size is too big.");
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// This tag contains the network info structure starting at the OUI.
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std::memcpy(tag.network_info.data(), &network_info.oui_value, tag.network_info.size());
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// Copy the tag and the data so we can calculate the SHA1 over it.
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std::vector<u8> buffer(sizeof(tag) + network_info.application_data_size);
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std::memcpy(buffer.data(), &tag, sizeof(tag));
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std::memcpy(buffer.data() + sizeof(tag), network_info.application_data.data(),
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network_info.application_data_size);
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// Calculate the SHA1 of the contents of the tag.
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std::array<u8, CryptoPP::SHA1::DIGESTSIZE> hash;
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CryptoPP::SHA1().CalculateDigest(hash.data(),
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buffer.data() + offsetof(NetworkInfoTag, network_info),
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buffer.size() - sizeof(TagHeader));
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// Copy it directly into the buffer, overwriting the zeros that we had previously placed there.
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std::memcpy(buffer.data() + offsetof(NetworkInfoTag, sha_hash), hash.data(), hash.size());
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return buffer;
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}
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/*
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* Calculates the CTR used for the AES-CTR encryption of the data stored in the
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* EncryptedDataTags.
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* @returns The CTR used for beacon crypto.
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*/
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std::array<u8, CryptoPP::AES::BLOCKSIZE> GetBeaconCryptoCTR(const NetworkInfo& network_info) {
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BeaconDataCryptoCTR data{};
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data.host_mac = network_info.host_mac_address;
|
||||
data.wlan_comm_id = network_info.wlan_comm_id;
|
||||
data.id = network_info.id;
|
||||
data.network_id = network_info.network_id;
|
||||
|
||||
std::array<u8, CryptoPP::AES::BLOCKSIZE> hash;
|
||||
std::memcpy(hash.data(), &data, sizeof(data));
|
||||
|
||||
return hash;
|
||||
}
|
||||
|
||||
/*
|
||||
* Serializes the node information into the format needed for network transfer,
|
||||
* and then encrypts it with the NWM key.
|
||||
* @returns The serialized and encrypted node information.
|
||||
*/
|
||||
std::vector<u8> GeneratedEncryptedData(const NetworkInfo& network_info, const NodeList& nodes) {
|
||||
std::vector<u8> buffer(sizeof(BeaconData));
|
||||
|
||||
BeaconData data{};
|
||||
std::memcpy(buffer.data(), &data, sizeof(BeaconData));
|
||||
|
||||
for (const NodeInfo& node : nodes) {
|
||||
// Serialize each node and convert the data from
|
||||
// host byte-order to Big Endian.
|
||||
BeaconNodeInfo info{};
|
||||
info.friend_code_seed = node.friend_code_seed;
|
||||
info.network_node_id = node.network_node_id;
|
||||
for (int i = 0; i < info.username.size(); ++i)
|
||||
info.username[i] = node.username[i];
|
||||
|
||||
buffer.insert(buffer.end(), reinterpret_cast<u8*>(&info),
|
||||
reinterpret_cast<u8*>(&info) + sizeof(info));
|
||||
}
|
||||
|
||||
// Calculate the MD5 hash of the data in the buffer, not including the hash field.
|
||||
std::array<u8, CryptoPP::MD5::DIGESTSIZE> hash;
|
||||
CryptoPP::MD5().CalculateDigest(hash.data(), buffer.data() + offsetof(BeaconData, bitmask),
|
||||
buffer.size() - sizeof(data.md5_hash));
|
||||
|
||||
// Copy the hash into the buffer.
|
||||
std::memcpy(buffer.data(), hash.data(), hash.size());
|
||||
|
||||
// Encrypt the data using AES-CTR and the NWM beacon key.
|
||||
using CryptoPP::AES;
|
||||
std::array<u8, AES::BLOCKSIZE> counter = GetBeaconCryptoCTR(network_info);
|
||||
CryptoPP::CTR_Mode<AES>::Encryption aes;
|
||||
aes.SetKeyWithIV(nwm_beacon_key.data(), AES::BLOCKSIZE, counter.data());
|
||||
aes.ProcessData(buffer.data(), buffer.data(), buffer.size());
|
||||
|
||||
return buffer;
|
||||
}
|
||||
|
||||
void DecryptBeaconData(const NetworkInfo& network_info, std::vector<u8>& buffer) {
|
||||
// Decrypt the data using AES-CTR and the NWM beacon key.
|
||||
using CryptoPP::AES;
|
||||
std::array<u8, AES::BLOCKSIZE> counter = GetBeaconCryptoCTR(network_info);
|
||||
CryptoPP::CTR_Mode<AES>::Decryption aes;
|
||||
aes.SetKeyWithIV(nwm_beacon_key.data(), AES::BLOCKSIZE, counter.data());
|
||||
aes.ProcessData(buffer.data(), buffer.data(), buffer.size());
|
||||
}
|
||||
|
||||
/**
|
||||
* Generates a buffer with the Network Info Nintendo tag.
|
||||
* This tag contains the first portion of the encrypted payload in the 802.11 beacon frame.
|
||||
* The encrypted payload contains information about the nodes currently connected to the network.
|
||||
* @returns A buffer with the first Nintendo encrypted data parameters of the beacon frame.
|
||||
*/
|
||||
std::vector<u8> GenerateNintendoFirstEncryptedDataTag(const NetworkInfo& network_info,
|
||||
const NodeList& nodes) {
|
||||
const size_t payload_size =
|
||||
std::min<size_t>(EncryptedDataSizeCutoff, nodes.size() * sizeof(NodeInfo));
|
||||
|
||||
EncryptedDataTag tag{};
|
||||
tag.header.tag_id = static_cast<u8>(TagId::VendorSpecific);
|
||||
tag.header.length = sizeof(tag) - sizeof(TagHeader) + payload_size;
|
||||
tag.oui_type = static_cast<u8>(NintendoTagId::EncryptedData0);
|
||||
tag.oui = NintendoOUI;
|
||||
|
||||
std::vector<u8> buffer(sizeof(tag) + payload_size);
|
||||
std::memcpy(buffer.data(), &tag, sizeof(tag));
|
||||
|
||||
std::vector<u8> encrypted_data = GeneratedEncryptedData(network_info, nodes);
|
||||
std::memcpy(buffer.data() + sizeof(tag), encrypted_data.data(), payload_size);
|
||||
|
||||
return buffer;
|
||||
}
|
||||
|
||||
/**
|
||||
* Generates a buffer with the Network Info Nintendo tag.
|
||||
* This tag contains the second portion of the encrypted payload in the 802.11 beacon frame.
|
||||
* The encrypted payload contains information about the nodes currently connected to the network.
|
||||
* This tag is only present if the payload size is greater than EncryptedDataSizeCutoff (0xFA)
|
||||
* bytes.
|
||||
* @returns A buffer with the second Nintendo encrypted data parameters of the beacon frame.
|
||||
*/
|
||||
std::vector<u8> GenerateNintendoSecondEncryptedDataTag(const NetworkInfo& network_info,
|
||||
const NodeList& nodes) {
|
||||
// This tag is only present if the payload is larger than EncryptedDataSizeCutoff (0xFA).
|
||||
if (nodes.size() * sizeof(NodeInfo) <= EncryptedDataSizeCutoff)
|
||||
return {};
|
||||
|
||||
const size_t payload_size = nodes.size() * sizeof(NodeInfo) - EncryptedDataSizeCutoff;
|
||||
|
||||
const size_t tag_length = sizeof(EncryptedDataTag) - sizeof(TagHeader) + payload_size;
|
||||
|
||||
// TODO(Subv): What does the 3DS do when a game has too much data to fit into the tag?
|
||||
ASSERT_MSG(tag_length <= 255, "Data is too big.");
|
||||
|
||||
EncryptedDataTag tag{};
|
||||
tag.header.tag_id = static_cast<u8>(TagId::VendorSpecific);
|
||||
tag.header.length = tag_length;
|
||||
tag.oui_type = static_cast<u8>(NintendoTagId::EncryptedData1);
|
||||
tag.oui = NintendoOUI;
|
||||
|
||||
std::vector<u8> buffer(sizeof(tag) + payload_size);
|
||||
std::memcpy(buffer.data(), &tag, sizeof(tag));
|
||||
|
||||
std::vector<u8> encrypted_data = GeneratedEncryptedData(network_info, nodes);
|
||||
std::memcpy(buffer.data() + sizeof(tag), encrypted_data.data() + EncryptedDataSizeCutoff,
|
||||
payload_size);
|
||||
|
||||
return buffer;
|
||||
}
|
||||
|
||||
/**
|
||||
* Generates a buffer with the Nintendo tagged parameters of an 802.11 Beacon frame
|
||||
* for UDS communication.
|
||||
* @returns A buffer with the Nintendo tagged parameters of the beacon frame.
|
||||
*/
|
||||
std::vector<u8> GenerateNintendoTaggedParameters(const NetworkInfo& network_info,
|
||||
const NodeList& nodes) {
|
||||
ASSERT_MSG(network_info.max_nodes == nodes.size(), "Inconsistent network state.");
|
||||
|
||||
std::vector<u8> buffer = GenerateNintendoDummyTag();
|
||||
std::vector<u8> network_info_tag = GenerateNintendoNetworkInfoTag(network_info);
|
||||
std::vector<u8> first_data_tag = GenerateNintendoFirstEncryptedDataTag(network_info, nodes);
|
||||
std::vector<u8> second_data_tag = GenerateNintendoSecondEncryptedDataTag(network_info, nodes);
|
||||
|
||||
buffer.insert(buffer.end(), network_info_tag.begin(), network_info_tag.end());
|
||||
buffer.insert(buffer.end(), first_data_tag.begin(), first_data_tag.end());
|
||||
buffer.insert(buffer.end(), second_data_tag.begin(), second_data_tag.end());
|
||||
|
||||
return buffer;
|
||||
}
|
||||
|
||||
std::vector<u8> GenerateBeaconFrame(const NetworkInfo& network_info, const NodeList& nodes) {
|
||||
std::vector<u8> buffer = GenerateFixedParameters();
|
||||
std::vector<u8> basic_tags = GenerateBasicTaggedParameters();
|
||||
std::vector<u8> nintendo_tags = GenerateNintendoTaggedParameters(network_info, nodes);
|
||||
|
||||
buffer.insert(buffer.end(), basic_tags.begin(), basic_tags.end());
|
||||
buffer.insert(buffer.end(), nintendo_tags.begin(), nintendo_tags.end());
|
||||
|
||||
return buffer;
|
||||
}
|
||||
|
||||
std::deque<WifiPacket> GetReceivedPackets(WifiPacket::PacketType type, const MacAddress& sender) {
|
||||
return {};
|
||||
}
|
||||
} // namespace NWM
|
||||
} // namespace Service
|
||||
|
|
@ -0,0 +1,173 @@
|
|||
// Copyright 2017 Citra Emulator Project
|
||||
// Licensed under GPLv2 or any later version
|
||||
// Refer to the license.txt file included.
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <array>
|
||||
#include <deque>
|
||||
#include <vector>
|
||||
#include "common/common_types.h"
|
||||
#include "common/swap.h"
|
||||
#include "core/hle/service/service.h"
|
||||
|
||||
namespace Service {
|
||||
namespace NWM {
|
||||
|
||||
using MacAddress = std::array<u8, 6>;
|
||||
|
||||
/// The maximum number of nodes that can exist in an UDS session.
|
||||
constexpr u32 UDSMaxNodes = 16;
|
||||
constexpr std::array<u8, 3> NintendoOUI = {0x00, 0x1F, 0x32};
|
||||
|
||||
/// Additional block tag ids in the Beacon frames
|
||||
enum class TagId : u8 {
|
||||
SSID = 0,
|
||||
SupportedRates = 1,
|
||||
DSParameterSet = 2,
|
||||
TrafficIndicationMap = 5,
|
||||
CountryInformation = 7,
|
||||
ERPInformation = 42,
|
||||
VendorSpecific = 221
|
||||
};
|
||||
|
||||
/**
|
||||
* Internal vendor-specific tag ids as stored inside
|
||||
* VendorSpecific blocks in the Beacon frames.
|
||||
*/
|
||||
enum class NintendoTagId : u8 {
|
||||
Dummy = 20,
|
||||
NetworkInfo = 21,
|
||||
EncryptedData0 = 24,
|
||||
EncryptedData1 = 25,
|
||||
};
|
||||
|
||||
struct BeaconEntryHeader {
|
||||
u32_le total_size;
|
||||
INSERT_PADDING_BYTES(1);
|
||||
u8 wifi_channel;
|
||||
INSERT_PADDING_BYTES(2);
|
||||
MacAddress mac_address;
|
||||
INSERT_PADDING_BYTES(6);
|
||||
u32_le unk_size;
|
||||
u32_le header_size;
|
||||
};
|
||||
|
||||
static_assert(sizeof(BeaconEntryHeader) == 0x1C, "BeaconEntryHeader has incorrect size.");
|
||||
|
||||
struct BeaconDataReplyHeader {
|
||||
u32_le max_output_size;
|
||||
u32_le total_size;
|
||||
u32_le total_entries;
|
||||
};
|
||||
|
||||
static_assert(sizeof(BeaconDataReplyHeader) == 12, "BeaconDataReplyHeader has incorrect size.");
|
||||
|
||||
#pragma pack(push, 1)
|
||||
struct BeaconFrameHeader {
|
||||
// Number of microseconds the AP has been active.
|
||||
u64_le timestamp;
|
||||
// Interval between beacon transmissions, expressed in TU.
|
||||
u16_le beacon_interval;
|
||||
// Indicates the presence of optional capabilities.
|
||||
u16_le capabilities;
|
||||
};
|
||||
#pragma pack(pop)
|
||||
|
||||
static_assert(sizeof(BeaconFrameHeader) == 12, "BeaconFrameHeader has incorrect size.");
|
||||
|
||||
struct TagHeader {
|
||||
u8 tag_id;
|
||||
u8 length;
|
||||
};
|
||||
|
||||
static_assert(sizeof(TagHeader) == 2, "TagHeader has incorrect size.");
|
||||
|
||||
struct DummyTag {
|
||||
TagHeader header;
|
||||
std::array<u8, 3> oui;
|
||||
u8 oui_type;
|
||||
std::array<u8, 3> data;
|
||||
};
|
||||
|
||||
static_assert(sizeof(DummyTag) == 9, "DummyTag has incorrect size.");
|
||||
|
||||
struct NetworkInfoTag {
|
||||
TagHeader header;
|
||||
std::array<u8, 0x1F> network_info;
|
||||
std::array<u8, 0x14> sha_hash;
|
||||
u8 appdata_size;
|
||||
};
|
||||
|
||||
static_assert(sizeof(NetworkInfoTag) == 54, "NetworkInfoTag has incorrect size.");
|
||||
|
||||
struct EncryptedDataTag {
|
||||
TagHeader header;
|
||||
std::array<u8, 3> oui;
|
||||
u8 oui_type;
|
||||
};
|
||||
|
||||
static_assert(sizeof(EncryptedDataTag) == 6, "EncryptedDataTag has incorrect size.");
|
||||
|
||||
#pragma pack(push, 1)
|
||||
// The raw bytes of this structure are the CTR used in the encryption (AES-CTR)
|
||||
// of the beacon data stored in the EncryptedDataTags.
|
||||
struct BeaconDataCryptoCTR {
|
||||
MacAddress host_mac;
|
||||
u32_le wlan_comm_id;
|
||||
u8 id;
|
||||
INSERT_PADDING_BYTES(1);
|
||||
u32_le network_id;
|
||||
};
|
||||
|
||||
static_assert(sizeof(BeaconDataCryptoCTR) == 0x10, "BeaconDataCryptoCTR has incorrect size.");
|
||||
|
||||
struct BeaconNodeInfo {
|
||||
u64_be friend_code_seed;
|
||||
std::array<u16_be, 10> username;
|
||||
u16_be network_node_id;
|
||||
};
|
||||
|
||||
static_assert(sizeof(BeaconNodeInfo) == 0x1E, "BeaconNodeInfo has incorrect size.");
|
||||
|
||||
struct BeaconData {
|
||||
std::array<u8, 0x10> md5_hash;
|
||||
u16_be bitmask;
|
||||
};
|
||||
#pragma pack(pop)
|
||||
|
||||
static_assert(sizeof(BeaconData) == 0x12, "BeaconData has incorrect size.");
|
||||
|
||||
/// Information about a received WiFi packet.
|
||||
/// Acts as our own 802.11 header.
|
||||
struct WifiPacket {
|
||||
enum class PacketType { Beacon, Data };
|
||||
|
||||
PacketType type; ///< The type of 802.11 frame, Beacon / Data.
|
||||
|
||||
/// Raw 802.11 frame data, starting at the management frame header for management frames.
|
||||
std::vector<u8> data;
|
||||
MacAddress transmitter_address; ///< Mac address of the transmitter.
|
||||
MacAddress destination_address; ///< Mac address of the receiver.
|
||||
u8 channel; ///< WiFi channel where this frame was transmitted.
|
||||
};
|
||||
|
||||
/**
|
||||
* Decrypts the beacon data buffer for the network described by `network_info`.
|
||||
*/
|
||||
void DecryptBeaconData(const NetworkInfo& network_info, std::vector<u8>& buffer);
|
||||
|
||||
/**
|
||||
* Generates an 802.11 beacon frame starting at the management frame header.
|
||||
* This frame contains information about the network and its connected clients.
|
||||
* @returns The generated frame.
|
||||
*/
|
||||
std::vector<u8> GenerateBeaconFrame(const NetworkInfo& network_info, const NodeList& nodes);
|
||||
|
||||
/**
|
||||
* Returns a list of received 802.11 frames from the specified sender
|
||||
* matching the type since the last call.
|
||||
*/
|
||||
std::deque<WifiPacket> GetReceivedPackets(WifiPacket::PacketType type, const MacAddress& sender);
|
||||
} // namespace NWM
|
||||
} // namespace Service
|
||||
Reference in New Issue