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-rw-r--r--src/core/hle/service/nwm/nwm_uds.cpp275
-rw-r--r--src/core/hle/service/nwm/uds_connection.cpp9
-rw-r--r--src/core/hle/service/nwm/uds_connection.h5
-rw-r--r--src/core/hle/service/nwm/uds_data.cpp21
-rw-r--r--src/core/hle/service/nwm/uds_data.h28
5 files changed, 250 insertions, 88 deletions
diff --git a/src/core/hle/service/nwm/nwm_uds.cpp b/src/core/hle/service/nwm/nwm_uds.cpp
index 893bbb1e7..4e2af9ae6 100644
--- a/src/core/hle/service/nwm/nwm_uds.cpp
+++ b/src/core/hle/service/nwm/nwm_uds.cpp
@@ -2,8 +2,10 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
+#include <algorithm>
#include <array>
#include <cstring>
+#include <list>
#include <mutex>
#include <unordered_map>
#include <vector>
@@ -37,9 +39,12 @@ static ConnectionStatus connection_status{};
/* 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, so this always contains at least 1 entry.
+ * The first node is always the host.
*/
-static NodeList node_info(1);
+static NodeList node_info;
+
+// Node information about our own system.
+static NodeInfo current_node;
// Mapping of bind node ids to their respective events.
static std::unordered_map<u32, Kernel::SharedPtr<Kernel::Event>> bind_node_events;
@@ -54,6 +59,10 @@ static NetworkInfo network_info;
// Event that will generate and send the 802.11 beacon frames.
static int beacon_broadcast_event;
+// Mutex to synchronize access to the connection status between the emulation thread and the
+// network thread.
+static std::mutex connection_status_mutex;
+
// Mutex to synchronize access to the list of received beacons between the emulation thread and the
// network thread.
static std::mutex beacon_mutex;
@@ -63,14 +72,26 @@ static std::mutex beacon_mutex;
constexpr size_t MaxBeaconFrames = 15;
// List of the last <MaxBeaconFrames> beacons received from the network.
-static std::deque<Network::WifiPacket> received_beacons;
+static std::list<Network::WifiPacket> received_beacons;
/**
* Returns a list of received 802.11 beacon frames from the specified sender since the last call.
*/
-std::deque<Network::WifiPacket> GetReceivedBeacons(const MacAddress& sender) {
+std::list<Network::WifiPacket> GetReceivedBeacons(const MacAddress& sender) {
std::lock_guard<std::mutex> lock(beacon_mutex);
- // TODO(Subv): Filter by sender.
+ if (sender != Network::BroadcastMac) {
+ std::list<Network::WifiPacket> filtered_list;
+ const auto beacon = std::find_if(received_beacons.begin(), received_beacons.end(),
+ [&sender](const Network::WifiPacket& packet) {
+ return packet.transmitter_address == sender;
+ });
+ if (beacon != received_beacons.end()) {
+ filtered_list.push_back(*beacon);
+ // TODO(B3N30): Check if the complete deque is cleared or just the fetched entries
+ received_beacons.erase(beacon);
+ }
+ return filtered_list;
+ }
return std::move(received_beacons);
}
@@ -83,6 +104,15 @@ void SendPacket(Network::WifiPacket& packet) {
// limit is exceeded.
void 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(),
+ [&packet](const Network::WifiPacket& new_packet) {
+ return new_packet.transmitter_address == packet.transmitter_address;
+ });
+ if (unique_beacon != received_beacons.end()) {
+ // We already have a beacon from the same mac in the deque, remove the old one;
+ received_beacons.erase(unique_beacon);
+ }
received_beacons.emplace_back(packet);
@@ -91,14 +121,33 @@ void HandleBeaconFrame(const Network::WifiPacket& packet) {
received_beacons.pop_front();
}
+void HandleAssociationResponseFrame(const Network::WifiPacket& packet) {
+ auto assoc_result = GetAssociationResult(packet.data);
+
+ ASSERT_MSG(std::get<AssocStatus>(assoc_result) == AssocStatus::Successful,
+ "Could not join network");
+ {
+ std::lock_guard<std::mutex> lock(connection_status_mutex);
+ ASSERT(connection_status.status == static_cast<u32>(NetworkStatus::Connecting));
+ }
+
+ // Send the EAPoL-Start packet to the server.
+ using Network::WifiPacket;
+ WifiPacket eapol_start;
+ eapol_start.channel = network_channel;
+ eapol_start.data = GenerateEAPoLStartFrame(std::get<u16>(assoc_result), current_node);
+ // TODO(B3N30): Encrypt the packet.
+ eapol_start.destination_address = packet.transmitter_address;
+ eapol_start.type = WifiPacket::PacketType::Data;
+
+ SendPacket(eapol_start);
+}
+
/*
* Returns an available index in the nodes array for the
* currently-hosted UDS network.
*/
static u16 GetNextAvailableNodeId() {
- ASSERT_MSG(connection_status.status == static_cast<u32>(NetworkStatus::ConnectedAsHost),
- "Can not accept clients if we're not hosting a network");
-
for (u16 index = 0; index < connection_status.max_nodes; ++index) {
if ((connection_status.node_bitmask & (1 << index)) == 0)
return index;
@@ -113,35 +162,46 @@ static u16 GetNextAvailableNodeId() {
* authentication frame with SEQ1.
*/
void StartConnectionSequence(const MacAddress& server) {
- ASSERT(connection_status.status == static_cast<u32>(NetworkStatus::NotConnected));
-
- // TODO(Subv): Handle timeout.
-
- // Send an authentication frame with SEQ1
using Network::WifiPacket;
WifiPacket auth_request;
- auth_request.channel = network_channel;
- auth_request.data = GenerateAuthenticationFrame(AuthenticationSeq::SEQ1);
- auth_request.destination_address = server;
- auth_request.type = WifiPacket::PacketType::Authentication;
+ {
+ std::lock_guard<std::mutex> lock(connection_status_mutex);
+ ASSERT(connection_status.status == static_cast<u32>(NetworkStatus::NotConnected));
+
+ // TODO(Subv): Handle timeout.
+
+ // Send an authentication frame with SEQ1
+ auth_request.channel = network_channel;
+ auth_request.data = GenerateAuthenticationFrame(AuthenticationSeq::SEQ1);
+ auth_request.destination_address = server;
+ auth_request.type = WifiPacket::PacketType::Authentication;
+ }
SendPacket(auth_request);
}
/// Sends an Association Response frame to the specified mac address
void SendAssociationResponseFrame(const MacAddress& address) {
- ASSERT_MSG(connection_status.status == static_cast<u32>(NetworkStatus::ConnectedAsHost));
-
using Network::WifiPacket;
WifiPacket assoc_response;
- assoc_response.channel = network_channel;
- // TODO(Subv): This will cause multiple clients to end up with the same association id, but
- // we're not using that for anything.
- u16 association_id = 1;
- assoc_response.data = GenerateAssocResponseFrame(AssocStatus::Successful, association_id,
- network_info.network_id);
- assoc_response.destination_address = address;
- assoc_response.type = WifiPacket::PacketType::AssociationResponse;
+
+ {
+ std::lock_guard<std::mutex> lock(connection_status_mutex);
+ if (connection_status.status != static_cast<u32>(NetworkStatus::ConnectedAsHost)) {
+ LOG_ERROR(Service_NWM, "Connection sequence aborted, because connection status is %u",
+ connection_status.status);
+ return;
+ }
+
+ assoc_response.channel = network_channel;
+ // TODO(Subv): This will cause multiple clients to end up with the same association id, but
+ // we're not using that for anything.
+ u16 association_id = 1;
+ assoc_response.data = GenerateAssocResponseFrame(AssocStatus::Successful, association_id,
+ network_info.network_id);
+ assoc_response.destination_address = address;
+ assoc_response.type = WifiPacket::PacketType::AssociationResponse;
+ }
SendPacket(assoc_response);
}
@@ -155,16 +215,23 @@ void SendAssociationResponseFrame(const MacAddress& address) {
void 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) {
- ASSERT_MSG(connection_status.status == static_cast<u32>(NetworkStatus::ConnectedAsHost));
-
- // Respond with an authentication response frame with SEQ2
using Network::WifiPacket;
WifiPacket auth_request;
- auth_request.channel = network_channel;
- auth_request.data = GenerateAuthenticationFrame(AuthenticationSeq::SEQ2);
- auth_request.destination_address = packet.transmitter_address;
- auth_request.type = WifiPacket::PacketType::Authentication;
-
+ {
+ std::lock_guard<std::mutex> lock(connection_status_mutex);
+ if (connection_status.status != static_cast<u32>(NetworkStatus::ConnectedAsHost)) {
+ LOG_ERROR(Service_NWM,
+ "Connection sequence aborted, because connection status is %u",
+ connection_status.status);
+ return;
+ }
+
+ // Respond with an authentication response frame with SEQ2
+ auth_request.channel = network_channel;
+ auth_request.data = GenerateAuthenticationFrame(AuthenticationSeq::SEQ2);
+ auth_request.destination_address = packet.transmitter_address;
+ auth_request.type = WifiPacket::PacketType::Authentication;
+ }
SendPacket(auth_request);
SendAssociationResponseFrame(packet.transmitter_address);
@@ -180,6 +247,9 @@ void OnWifiPacketReceived(const Network::WifiPacket& packet) {
case Network::WifiPacket::PacketType::Authentication:
HandleAuthenticationFrame(packet);
break;
+ case Network::WifiPacket::PacketType::AssociationResponse:
+ HandleAssociationResponseFrame(packet);
+ break;
}
}
@@ -305,7 +375,7 @@ static void InitializeWithVersion(Interface* self) {
u32 sharedmem_size = rp.Pop<u32>();
// Update the node information with the data the game gave us.
- rp.PopRaw(node_info[0]);
+ rp.PopRaw(current_node);
u16 version = rp.Pop<u16>();
@@ -315,10 +385,14 @@ static void InitializeWithVersion(Interface* self) {
ASSERT_MSG(recv_buffer_memory->size == sharedmem_size, "Invalid shared memory size.");
- // Reset the connection status, it contains all zeros after initialization,
- // except for the actual status value.
- connection_status = {};
- connection_status.status = static_cast<u32>(NetworkStatus::NotConnected);
+ {
+ std::lock_guard<std::mutex> lock(connection_status_mutex);
+
+ // Reset the connection status, it contains all zeros after initialization,
+ // except for the actual status value.
+ connection_status = {};
+ connection_status.status = static_cast<u32>(NetworkStatus::NotConnected);
+ }
IPC::RequestBuilder rb = rp.MakeBuilder(1, 2);
rb.Push(RESULT_SUCCESS);
@@ -348,12 +422,16 @@ static void GetConnectionStatus(Interface* self) {
IPC::RequestBuilder rb = rp.MakeBuilder(13, 0);
rb.Push(RESULT_SUCCESS);
- rb.PushRaw(connection_status);
-
- // Reset the bitmask of changed nodes after each call to this
- // function to prevent falsely informing games of outstanding
- // changes in subsequent calls.
- connection_status.changed_nodes = 0;
+ {
+ std::lock_guard<std::mutex> lock(connection_status_mutex);
+ rb.PushRaw(connection_status);
+
+ // Reset the bitmask of changed nodes after each call to this
+ // function to prevent falsely informing games of outstanding
+ // changes in subsequent calls.
+ // TODO(Subv): Find exactly where the NWM module resets this value.
+ connection_status.changed_nodes = 0;
+ }
LOG_DEBUG(Service_NWM, "called");
}
@@ -434,31 +512,36 @@ static void BeginHostingNetwork(Interface* self) {
// The real UDS module throws a fatal error if this assert fails.
ASSERT_MSG(network_info.max_nodes > 1, "Trying to host a network of only one member.");
- connection_status.status = static_cast<u32>(NetworkStatus::ConnectedAsHost);
-
- // Ensure the application data size is less than the maximum value.
- ASSERT_MSG(network_info.application_data_size <= ApplicationDataSize, "Data size is too big.");
-
- // Set up basic information for this network.
- network_info.oui_value = NintendoOUI;
- network_info.oui_type = static_cast<u8>(NintendoTagId::NetworkInfo);
-
- connection_status.max_nodes = network_info.max_nodes;
-
- // Resize the nodes list to hold max_nodes.
- node_info.resize(network_info.max_nodes);
-
- // There's currently only one node in the network (the host).
- connection_status.total_nodes = 1;
- network_info.total_nodes = 1;
- // The host is always the first node
- connection_status.network_node_id = 1;
- node_info[0].network_node_id = 1;
- connection_status.nodes[0] = connection_status.network_node_id;
- // Set the bit 0 in the nodes bitmask to indicate that node 1 is already taken.
- connection_status.node_bitmask |= 1;
- // Notify the application that the first node was set.
- connection_status.changed_nodes |= 1;
+ {
+ std::lock_guard<std::mutex> lock(connection_status_mutex);
+ connection_status.status = static_cast<u32>(NetworkStatus::ConnectedAsHost);
+
+ // Ensure the application data size is less than the maximum value.
+ ASSERT_MSG(network_info.application_data_size <= ApplicationDataSize,
+ "Data size is too big.");
+
+ // Set up basic information for this network.
+ network_info.oui_value = NintendoOUI;
+ network_info.oui_type = static_cast<u8>(NintendoTagId::NetworkInfo);
+
+ connection_status.max_nodes = network_info.max_nodes;
+
+ // Resize the nodes list to hold max_nodes.
+ node_info.resize(network_info.max_nodes);
+
+ // There's currently only one node in the network (the host).
+ connection_status.total_nodes = 1;
+ network_info.total_nodes = 1;
+ // The host is always the first node
+ connection_status.network_node_id = 1;
+ current_node.network_node_id = 1;
+ connection_status.nodes[0] = connection_status.network_node_id;
+ // Set the bit 0 in the nodes bitmask to indicate that node 1 is already taken.
+ connection_status.node_bitmask |= 1;
+ // Notify the application that the first node was set.
+ connection_status.changed_nodes |= 1;
+ node_info[0] = current_node;
+ }
// If the game has a preferred channel, use that instead.
if (network_info.channel != 0)
@@ -495,9 +578,13 @@ static void DestroyNetwork(Interface* self) {
// Unschedule the beacon broadcast event.
CoreTiming::UnscheduleEvent(beacon_broadcast_event, 0);
- // TODO(Subv): Check if connection_status is indeed reset after this call.
- connection_status = {};
- connection_status.status = static_cast<u8>(NetworkStatus::NotConnected);
+ {
+ std::lock_guard<std::mutex> lock(connection_status_mutex);
+
+ // TODO(Subv): Check if connection_status is indeed reset after this call.
+ connection_status = {};
+ connection_status.status = static_cast<u8>(NetworkStatus::NotConnected);
+ }
connection_status_event->Signal();
IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
@@ -540,17 +627,24 @@ static void SendTo(Interface* self) {
IPC::RequestBuilder rb = rp.MakeBuilder(1, 0);
- if (connection_status.status != static_cast<u32>(NetworkStatus::ConnectedAsClient) &&
- connection_status.status != static_cast<u32>(NetworkStatus::ConnectedAsHost)) {
- rb.Push(ResultCode(ErrorDescription::NotAuthorized, ErrorModule::UDS,
- ErrorSummary::InvalidState, ErrorLevel::Status));
- return;
- }
+ u16 network_node_id;
- if (dest_node_id == connection_status.network_node_id) {
- rb.Push(ResultCode(ErrorDescription::NotFound, ErrorModule::UDS,
- ErrorSummary::WrongArgument, ErrorLevel::Status));
- return;
+ {
+ std::lock_guard<std::mutex> lock(connection_status_mutex);
+ if (connection_status.status != static_cast<u32>(NetworkStatus::ConnectedAsClient) &&
+ connection_status.status != static_cast<u32>(NetworkStatus::ConnectedAsHost)) {
+ rb.Push(ResultCode(ErrorDescription::NotAuthorized, ErrorModule::UDS,
+ ErrorSummary::InvalidState, ErrorLevel::Status));
+ return;
+ }
+
+ if (dest_node_id == connection_status.network_node_id) {
+ rb.Push(ResultCode(ErrorDescription::NotFound, ErrorModule::UDS,
+ ErrorSummary::WrongArgument, ErrorLevel::Status));
+ return;
+ }
+
+ network_node_id = connection_status.network_node_id;
}
// TODO(Subv): Do something with the flags.
@@ -567,8 +661,8 @@ static void SendTo(Interface* self) {
// TODO(Subv): Increment the sequence number after each sent packet.
u16 sequence_number = 0;
- std::vector<u8> data_payload = GenerateDataPayload(
- data, data_channel, dest_node_id, connection_status.network_node_id, sequence_number);
+ std::vector<u8> data_payload =
+ GenerateDataPayload(data, data_channel, dest_node_id, network_node_id, sequence_number);
// TODO(Subv): Retrieve the MAC address of the dest_node_id and our own to encrypt
// and encapsulate the payload.
@@ -595,6 +689,7 @@ static void GetChannel(Interface* self) {
IPC::RequestParser rp(Kernel::GetCommandBuffer(), 0x1A, 0, 0);
IPC::RequestBuilder rb = rp.MakeBuilder(2, 0);
+ std::lock_guard<std::mutex> lock(connection_status_mutex);
bool is_connected = connection_status.status != static_cast<u32>(NetworkStatus::NotConnected);
u8 channel = is_connected ? network_channel : 0;
@@ -766,6 +861,7 @@ static void BeaconBroadcastCallback(u64 userdata, int cycles_late) {
* @param network_node_id Network Node Id of the connecting client.
*/
void OnClientConnected(u16 network_node_id) {
+ std::lock_guard<std::mutex> lock(connection_status_mutex);
ASSERT_MSG(connection_status.status == static_cast<u32>(NetworkStatus::ConnectedAsHost),
"Can not accept clients if we're not hosting a network");
ASSERT_MSG(connection_status.total_nodes < connection_status.max_nodes,
@@ -827,8 +923,11 @@ NWM_UDS::~NWM_UDS() {
connection_status_event = nullptr;
recv_buffer_memory = nullptr;
- connection_status = {};
- connection_status.status = static_cast<u32>(NetworkStatus::NotConnected);
+ {
+ std::lock_guard<std::mutex> lock(connection_status_mutex);
+ connection_status = {};
+ connection_status.status = static_cast<u32>(NetworkStatus::NotConnected);
+ }
CoreTiming::UnscheduleEvent(beacon_broadcast_event, 0);
}
diff --git a/src/core/hle/service/nwm/uds_connection.cpp b/src/core/hle/service/nwm/uds_connection.cpp
index c8a76ec2a..c74f51253 100644
--- a/src/core/hle/service/nwm/uds_connection.cpp
+++ b/src/core/hle/service/nwm/uds_connection.cpp
@@ -75,5 +75,14 @@ std::vector<u8> GenerateAssocResponseFrame(AssocStatus status, u16 association_i
return data;
}
+std::tuple<AssocStatus, u16> GetAssociationResult(const std::vector<u8>& body) {
+ AssociationResponseFrame frame;
+ memcpy(&frame, body.data(), sizeof(frame));
+
+ constexpr u16 AssociationIdMask = 0x3FFF;
+ return std::make_tuple(static_cast<AssocStatus>(frame.status_code),
+ frame.assoc_id & AssociationIdMask);
+}
+
} // namespace NWM
} // namespace Service
diff --git a/src/core/hle/service/nwm/uds_connection.h b/src/core/hle/service/nwm/uds_connection.h
index 73f55a4fd..a664f8471 100644
--- a/src/core/hle/service/nwm/uds_connection.h
+++ b/src/core/hle/service/nwm/uds_connection.h
@@ -4,6 +4,7 @@
#pragma once
+#include <tuple>
#include <vector>
#include "common/common_types.h"
#include "common/swap.h"
@@ -47,5 +48,9 @@ AuthenticationSeq GetAuthenticationSeqNumber(const std::vector<u8>& body);
/// network id, starting at the frame body.
std::vector<u8> GenerateAssocResponseFrame(AssocStatus status, u16 association_id, u32 network_id);
+/// Returns a tuple of (association status, association id) from the body of an AssociationResponse
+/// frame.
+std::tuple<AssocStatus, u16> GetAssociationResult(const std::vector<u8>& body);
+
} // namespace NWM
} // namespace Service
diff --git a/src/core/hle/service/nwm/uds_data.cpp b/src/core/hle/service/nwm/uds_data.cpp
index 8c6742dba..0fd9b8b8c 100644
--- a/src/core/hle/service/nwm/uds_data.cpp
+++ b/src/core/hle/service/nwm/uds_data.cpp
@@ -274,5 +274,26 @@ std::vector<u8> GenerateDataPayload(const std::vector<u8>& data, u8 channel, u16
return buffer;
}
+std::vector<u8> GenerateEAPoLStartFrame(u16 association_id, const NodeInfo& node_info) {
+ EAPoLStartPacket eapol_start{};
+ eapol_start.association_id = association_id;
+ eapol_start.friend_code_seed = node_info.friend_code_seed;
+
+ for (int i = 0; i < node_info.username.size(); ++i)
+ eapol_start.username[i] = node_info.username[i];
+
+ // Note: The network_node_id and unknown bytes seem to be uninitialized in the NWM module.
+ // TODO(B3N30): The last 8 bytes seem to have a fixed value of 07 88 15 00 04 e9 13 00 in
+ // EAPoL-Start packets from different 3DSs to the same host during a Super Smash Bros. 4 game.
+ // Find out what that means.
+
+ std::vector<u8> eapol_buffer(sizeof(EAPoLStartPacket));
+ std::memcpy(eapol_buffer.data(), &eapol_start, sizeof(eapol_start));
+
+ std::vector<u8> buffer = GenerateLLCHeader(EtherType::EAPoL);
+ buffer.insert(buffer.end(), eapol_buffer.begin(), eapol_buffer.end());
+ return buffer;
+}
+
} // namespace NWM
} // namespace Service
diff --git a/src/core/hle/service/nwm/uds_data.h b/src/core/hle/service/nwm/uds_data.h
index a23520a41..76e8f546b 100644
--- a/src/core/hle/service/nwm/uds_data.h
+++ b/src/core/hle/service/nwm/uds_data.h
@@ -67,6 +67,27 @@ struct DataFrameCryptoCTR {
static_assert(sizeof(DataFrameCryptoCTR) == 16, "DataFrameCryptoCTR has the wrong size");
+constexpr u16 EAPoLStartMagic = 0x201;
+
+/*
+ * Nintendo EAPoLStartPacket, is used to initaliaze a connection between client and host
+ */
+struct EAPoLStartPacket {
+ u16_be magic = EAPoLStartMagic;
+ u16_be association_id;
+ // This value is hardcoded to 1 in the NWM module.
+ u16_be unknown = 1;
+ INSERT_PADDING_BYTES(2);
+
+ u64_be friend_code_seed;
+ std::array<u16_be, 10> username;
+ INSERT_PADDING_BYTES(4);
+ u16_be network_node_id;
+ INSERT_PADDING_BYTES(6);
+};
+
+static_assert(sizeof(EAPoLStartPacket) == 0x30, "EAPoLStartPacket has the wrong size");
+
/**
* Generates an unencrypted 802.11 data payload.
* @returns The generated frame payload.
@@ -74,5 +95,12 @@ static_assert(sizeof(DataFrameCryptoCTR) == 16, "DataFrameCryptoCTR has the wron
std::vector<u8> GenerateDataPayload(const std::vector<u8>& data, u8 channel, u16 dest_node,
u16 src_node, u16 sequence_number);
+/*
+ * Generates an unencrypted 802.11 data frame body with the EAPoL-Start format for UDS
+ * communication.
+ * @returns The generated frame body.
+ */
+std::vector<u8> GenerateEAPoLStartFrame(u16 association_id, const NodeInfo& node_info);
+
} // namespace NWM
} // namespace Service
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 19:24:34 +0100