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// 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>;
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
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