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Merge pull request #4614 from wwylele/nwm-uds-global

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NWM_UDS: move states into the class
This commit is contained in:
Weiyi Wang 2019-02-14 11:44:28 -05:00 committed by GitHub
commit 8f2c35d7b6
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 148 additions and 125 deletions
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142
src/core/hle/service/nwm/nwm_uds.cpp
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@ -3,15 +3,7 @@
// Refer to the license.txt file included.
#include <algorithm>
#include <array>
#include <atomic>
#include <cstring>
#include <list>
#include <map>
#include <mutex>
#include <unordered_map>
#include <vector>
#include <boost/optional.hpp>
#include <cryptopp/osrng.h>
#include "common/common_types.h"
#include "common/logging/log.h"
@ -28,7 +20,6 @@
#include "core/hle/service/nwm/uds_connection.h"
#include "core/hle/service/nwm/uds_data.h"
#include "core/memory.h"
#include "network/network.h"
namespace Service::NWM {
@ -39,87 +30,17 @@ enum {
};
} // namespace ErrCodes
// 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{};
static std::atomic<bool> initialized(false);
/* Node information about the current network.
* The amount of elements in this vector is always the maximum number
* of nodes specified in the network configuration.
* The first node is always the host.
*/
static NodeList node_info;
// Node information about our own system.
static NodeInfo current_node;
struct BindNodeData {
u32 bind_node_id; ///< Id of the bind node associated with this data.
u8 channel; ///< Channel that this bind node was bound to.
u16 network_node_id; ///< Node id this bind node is associated with, only packets from this
/// network node will be received.
Kernel::SharedPtr<Kernel::Event> event; ///< Receive event for this bind node.
std::deque<std::vector<u8>> received_packets; ///< List of packets received on this channel.
};
// Mapping of data channels to their internal data.
static std::unordered_map<u32, BindNodeData> channel_data;
// 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;
// Mapping of mac addresses to their respective node_ids.
struct Node {
bool connected;
u16 node_id;
};
static std::map<MacAddress, Node> node_map;
// Event that will generate and send the 802.11 beacon frames.
static Core::TimingEventType* beacon_broadcast_event;
// Callback identifier for the OnWifiPacketReceived event.
static Network::RoomMember::CallbackHandle<Network::WifiPacket> wifi_packet_received;
// Mutex to synchronize access to the connection status between the emulation thread and the
// network thread.
static std::mutex connection_status_mutex;
static Kernel::SharedPtr<Kernel::Event> connection_event;
// Mutex to synchronize access to the list of received beacons between the emulation thread and the
// network thread.
static std::mutex beacon_mutex;
// Number of beacons to store before we start dropping the old ones.
// TODO(Subv): Find a more accurate value for this limit.
constexpr std::size_t MaxBeaconFrames = 15;
// List of the last <MaxBeaconFrames> beacons received from the network.
static std::list<Network::WifiPacket> received_beacons;
// Network node id used when a SecureData packet is addressed to every connected node.
constexpr u16 BroadcastNetworkNodeId = 0xFFFF;
// The Host has always dest_node_id 1
constexpr u16 HostDestNodeId = 1;
/**
* Returns a list of received 802.11 beacon frames from the specified sender since the last call.
*/
std::list<Network::WifiPacket> GetReceivedBeacons(const MacAddress& sender) {
std::list<Network::WifiPacket> NWM_UDS::GetReceivedBeacons(const MacAddress& sender) {
std::lock_guard<std::mutex> lock(beacon_mutex);
if (sender != Network::BroadcastMac) {
std::list<Network::WifiPacket> filtered_list;
@ -149,11 +70,7 @@ void SendPacket(Network::WifiPacket& packet) {
}
}
/*
* Returns an available index in the nodes array for the
* currently-hosted UDS network.
*/
static u16 GetNextAvailableNodeId() {
u16 NWM_UDS::GetNextAvailableNodeId() {
for (u16 index = 0; index < connection_status.max_nodes; ++index) {
if ((connection_status.node_bitmask & (1 << index)) == 0)
return index + 1;
@ -163,7 +80,7 @@ static u16 GetNextAvailableNodeId() {
ASSERT_MSG(false, "No available connection slots in the network");
}
static void BroadcastNodeMap() {
void NWM_UDS::BroadcastNodeMap() {
// Note: This is not how UDS on a 3ds does it but it shouldn't be
// necessary for citra
Network::WifiPacket packet;
@ -189,7 +106,7 @@ static void BroadcastNodeMap() {
SendPacket(packet);
}
static void HandleNodeMapPacket(const Network::WifiPacket& packet) {
void NWM_UDS::HandleNodeMapPacket(const Network::WifiPacket& packet) {
std::lock_guard<std::mutex> lock(connection_status_mutex);
if (connection_status.status == static_cast<u32>(NetworkStatus::ConnectedAsHost)) {
LOG_DEBUG(Service_NWM, "Ignored NodeMapPacket since connection_status is host");
@ -211,9 +128,7 @@ static void HandleNodeMapPacket(const Network::WifiPacket& packet) {
}
}
// Inserts the received beacon frame in the beacon queue and removes any older beacons if the size
// limit is exceeded.
void HandleBeaconFrame(const Network::WifiPacket& packet) {
void NWM_UDS::HandleBeaconFrame(const Network::WifiPacket& packet) {
std::lock_guard<std::mutex> lock(beacon_mutex);
const auto unique_beacon =
std::find_if(received_beacons.begin(), received_beacons.end(),
@ -232,7 +147,7 @@ void HandleBeaconFrame(const Network::WifiPacket& packet) {
received_beacons.pop_front();
}
void HandleAssociationResponseFrame(const Network::WifiPacket& packet) {
void NWM_UDS::HandleAssociationResponseFrame(const Network::WifiPacket& packet) {
auto assoc_result = GetAssociationResult(packet.data);
ASSERT_MSG(std::get<AssocStatus>(assoc_result) == AssocStatus::Successful,
@ -259,7 +174,7 @@ void HandleAssociationResponseFrame(const Network::WifiPacket& packet) {
SendPacket(eapol_start);
}
static void HandleEAPoLPacket(const Network::WifiPacket& packet) {
void NWM_UDS::HandleEAPoLPacket(const Network::WifiPacket& packet) {
std::unique_lock<std::recursive_mutex> hle_lock(HLE::g_hle_lock, std::defer_lock);
std::unique_lock<std::mutex> lock(connection_status_mutex, std::defer_lock);
std::lock(hle_lock, lock);
@ -378,7 +293,7 @@ static void HandleEAPoLPacket(const Network::WifiPacket& packet) {
}
}
static void HandleSecureDataPacket(const Network::WifiPacket& packet) {
void NWM_UDS::HandleSecureDataPacket(const Network::WifiPacket& packet) {
auto secure_data = ParseSecureDataHeader(packet.data);
std::unique_lock<std::recursive_mutex> hle_lock(HLE::g_hle_lock, std::defer_lock);
std::unique_lock<std::mutex> lock(connection_status_mutex, std::defer_lock);
@ -439,11 +354,7 @@ static void HandleSecureDataPacket(const Network::WifiPacket& packet) {
channel_info->second.event->Signal();
}
/*
* Start a connection sequence with an UDS server. The sequence starts by sending an 802.11
* authentication frame with SEQ1.
*/
void StartConnectionSequence(const MacAddress& server) {
void NWM_UDS::StartConnectionSequence(const MacAddress& server) {
using Network::WifiPacket;
WifiPacket auth_request;
{
@ -462,8 +373,7 @@ void StartConnectionSequence(const MacAddress& server) {
SendPacket(auth_request);
}
/// Sends an Association Response frame to the specified mac address
void SendAssociationResponseFrame(const MacAddress& address) {
void NWM_UDS::SendAssociationResponseFrame(const MacAddress& address) {
using Network::WifiPacket;
WifiPacket assoc_response;
@ -488,13 +398,7 @@ void SendAssociationResponseFrame(const MacAddress& address) {
SendPacket(assoc_response);
}
/*
* Handles the authentication request frame and sends the authentication response and association
* response frames. Once an Authentication frame with SEQ1 is received by the server, it responds
* with an Authentication frame containing SEQ2, and immediately sends an Association response frame
* containing the details of the access point and the assigned association id for the new client.
*/
void HandleAuthenticationFrame(const Network::WifiPacket& packet) {
void NWM_UDS::HandleAuthenticationFrame(const Network::WifiPacket& packet) {
// Only the SEQ1 auth frame is handled here, the SEQ2 frame doesn't need any special behavior
if (GetAuthenticationSeqNumber(packet.data) == AuthenticationSeq::SEQ1) {
using Network::WifiPacket;
@ -532,8 +436,7 @@ void HandleAuthenticationFrame(const Network::WifiPacket& packet) {
}
}
/// Handles the deauthentication frames sent from clients to hosts, when they leave a session
void HandleDeauthenticationFrame(const Network::WifiPacket& packet) {
void NWM_UDS::HandleDeauthenticationFrame(const Network::WifiPacket& packet) {
LOG_DEBUG(Service_NWM, "called");
std::unique_lock<std::recursive_mutex> hle_lock(HLE::g_hle_lock, std::defer_lock);
std::unique_lock<std::mutex> lock(connection_status_mutex, std::defer_lock);
@ -573,7 +476,7 @@ void HandleDeauthenticationFrame(const Network::WifiPacket& packet) {
connection_status_event->Signal();
}
static void HandleDataFrame(const Network::WifiPacket& packet) {
void NWM_UDS::HandleDataFrame(const Network::WifiPacket& packet) {
switch (GetFrameEtherType(packet.data)) {
case EtherType::EAPoL:
HandleEAPoLPacket(packet);
@ -585,7 +488,7 @@ static void HandleDataFrame(const Network::WifiPacket& packet) {
}
/// Callback to parse and handle a received wifi packet.
void OnWifiPacketReceived(const Network::WifiPacket& packet) {
void NWM_UDS::OnWifiPacketReceived(const Network::WifiPacket& packet) {
switch (packet.type) {
case Network::WifiPacket::PacketType::Beacon:
HandleBeaconFrame(packet);
@ -608,7 +511,7 @@ void OnWifiPacketReceived(const Network::WifiPacket& packet) {
}
}
static boost::optional<Network::MacAddress> GetNodeMacAddress(u16 dest_node_id, u8 flags) {
boost::optional<Network::MacAddress> NWM_UDS::GetNodeMacAddress(u16 dest_node_id, u8 flags) {
constexpr u8 BroadcastFlag = 0x2;
if ((flags & BroadcastFlag) || dest_node_id == BroadcastNetworkNodeId) {
// Broadcast
@ -729,7 +632,8 @@ void NWM_UDS::InitializeWithVersion(Kernel::HLERequestContext& ctx) {
ASSERT_MSG(recv_buffer_memory->GetSize() == sharedmem_size, "Invalid shared memory size.");
if (auto room_member = Network::GetRoomMember().lock()) {
wifi_packet_received = room_member->BindOnWifiPacketReceived(OnWifiPacketReceived);
wifi_packet_received = room_member->BindOnWifiPacketReceived(
[this](const Network::WifiPacket& packet) { OnWifiPacketReceived(packet); });
} else {
LOG_ERROR(Service_NWM, "Network isn't initalized");
}
@ -1417,18 +1321,6 @@ NWM_UDS::NWM_UDS(Core::System& system) : ServiceFramework("nwm::UDS"), system(sy
}
NWM_UDS::~NWM_UDS() {
network_info = {};
channel_data.clear();
connection_status_event = nullptr;
recv_buffer_memory = nullptr;
initialized = false;
{
std::lock_guard<std::mutex> lock(connection_status_mutex);
connection_status = {};
connection_status.status = static_cast<u32>(NetworkStatus::NotConnected);
}
if (auto room_member = Network::GetRoomMember().lock())
room_member->Unbind(wifi_packet_received);

131
src/core/hle/service/nwm/nwm_uds.h
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@ -5,20 +5,36 @@
#pragma once
#include <array>
#include <atomic>
#include <cstddef>
#include <deque>
#include <list>
#include <map>
#include <mutex>
#include <unordered_map>
#include <vector>
#include <boost/optional.hpp>
#include "common/common_types.h"
#include "common/swap.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/service/service.h"
#include "network/network.h"
namespace Core {
class System;
}
namespace Kernel {
class Event;
class SharedMemory;
} // namespace Kernel
// Local-WLAN service
namespace Service::NWM {
using MacAddress = std::array<u8, 6>;
const std::size_t ApplicationDataSize = 0xC8;
const u8 DefaultNetworkChannel = 11;
@ -354,6 +370,121 @@ private:
void DecryptBeaconData(Kernel::HLERequestContext& ctx);
void BeaconBroadcastCallback(u64 userdata, s64 cycles_late);
/**
* Returns a list of received 802.11 beacon frames from the specified sender since the last
* call.
*/
std::list<Network::WifiPacket> GetReceivedBeacons(const MacAddress& sender);
/*
* Returns an available index in the nodes array for the
* currently-hosted UDS network.
*/
u16 GetNextAvailableNodeId();
void BroadcastNodeMap();
void HandleNodeMapPacket(const Network::WifiPacket& packet);
void HandleBeaconFrame(const Network::WifiPacket& packet);
void HandleAssociationResponseFrame(const Network::WifiPacket& packet);
void HandleEAPoLPacket(const Network::WifiPacket& packet);
void HandleSecureDataPacket(const Network::WifiPacket& packet);
/*
* Start a connection sequence with an UDS server. The sequence starts by sending an 802.11
* authentication frame with SEQ1.
*/
void StartConnectionSequence(const MacAddress& server);
/// Sends an Association Response frame to the specified mac address
void SendAssociationResponseFrame(const MacAddress& address);
/*
* Handles the authentication request frame and sends the authentication response and
* association response frames. Once an Authentication frame with SEQ1 is received by the
* server, it responds with an Authentication frame containing SEQ2, and immediately sends an
* Association response frame containing the details of the access point and the assigned
* association id for the new client.
*/
void HandleAuthenticationFrame(const Network::WifiPacket& packet);
/// Handles the deauthentication frames sent from clients to hosts, when they leave a session
void HandleDeauthenticationFrame(const Network::WifiPacket& packet);
void HandleDataFrame(const Network::WifiPacket& packet);
/// Callback to parse and handle a received wifi packet.
void OnWifiPacketReceived(const Network::WifiPacket& packet);
boost::optional<Network::MacAddress> GetNodeMacAddress(u16 dest_node_id, u8 flags);
// Event that is signaled every time the connection status changes.
Kernel::SharedPtr<Kernel::Event> connection_status_event;
// Shared memory provided by the application to store the receive buffer.
// This is not currently used.
Kernel::SharedPtr<Kernel::SharedMemory> recv_buffer_memory;
// Connection status of this 3DS.
ConnectionStatus connection_status{};
std::atomic<bool> initialized{false};
/* Node information about the current network.
* The amount of elements in this vector is always the maximum number
* of nodes specified in the network configuration.
* The first node is always the host.
*/
NodeList node_info;
// Node information about our own system.
NodeInfo current_node;
struct BindNodeData {
u32 bind_node_id; ///< Id of the bind node associated with this data.
u8 channel; ///< Channel that this bind node was bound to.
u16 network_node_id; ///< Node id this bind node is associated with, only packets from this
/// network node will be received.
Kernel::SharedPtr<Kernel::Event> event; ///< Receive event for this bind node.
std::deque<std::vector<u8>> received_packets; ///< List of packets received on this channel.
};
// Mapping of data channels to their internal data.
std::unordered_map<u32, BindNodeData> channel_data;
// 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.
u8 network_channel = DefaultNetworkChannel;
// Information about the network that we're currently connected to.
NetworkInfo network_info;
// Mapping of mac addresses to their respective node_ids.
struct Node {
bool connected;
u16 node_id;
};
std::map<MacAddress, Node> node_map;
// Event that will generate and send the 802.11 beacon frames.
Core::TimingEventType* beacon_broadcast_event;
// Callback identifier for the OnWifiPacketReceived event.
Network::RoomMember::CallbackHandle<Network::WifiPacket> wifi_packet_received;
// Mutex to synchronize access to the connection status between the emulation thread and the
// network thread.
std::mutex connection_status_mutex;
Kernel::SharedPtr<Kernel::Event> connection_event;
// Mutex to synchronize access to the list of received beacons between the emulation thread and
// the network thread.
std::mutex beacon_mutex;
// List of the last <MaxBeaconFrames> beacons received from the network.
std::list<Network::WifiPacket> received_beacons;
};
} // namespace Service::NWM