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authorSubv <subv2112@gmail.com>2017-07-17 16:51:03 +0200
committerSubv <subv2112@gmail.com>2017-08-27 17:48:13 +0200
commitd088dbfbe1064bb5212e83c50e71e4b2ea5b00cd (patch)
treed0050ed036f228bff3ce4cc68fb3dcde93f22e8c
parentServices/UDS: Store the received beacon frames until RecvBeaconBroadcastData is called, up to 15 beacons at the same time, removing any older beacon frames when the limit is exceeded. (diff)
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-rw-r--r--src/core/hle/service/nwm/nwm_uds.cpp100
1 files changed, 83 insertions, 17 deletions
diff --git a/src/core/hle/service/nwm/nwm_uds.cpp b/src/core/hle/service/nwm/nwm_uds.cpp
index 8fdf160ff..893bbb1e7 100644
--- a/src/core/hle/service/nwm/nwm_uds.cpp
+++ b/src/core/hle/service/nwm/nwm_uds.cpp
@@ -91,12 +91,95 @@ void HandleBeaconFrame(const Network::WifiPacket& packet) {
received_beacons.pop_front();
}
+/*
+ * 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;
+ }
+
+ // Any connection attempts to an already full network should have been refused.
+ ASSERT_MSG(false, "No available connection slots in the network");
+}
+
+/*
+ * 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) {
+ 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;
+
+ 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;
+
+ 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) {
+ // 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;
+
+ SendPacket(auth_request);
+
+ SendAssociationResponseFrame(packet.transmitter_address);
+ }
+}
+
/// Callback to parse and handle a received wifi packet.
void OnWifiPacketReceived(const Network::WifiPacket& packet) {
switch (packet.type) {
case Network::WifiPacket::PacketType::Beacon:
HandleBeaconFrame(packet);
break;
+ case Network::WifiPacket::PacketType::Authentication:
+ HandleAuthenticationFrame(packet);
+ break;
}
}
@@ -678,23 +761,6 @@ static void BeaconBroadcastCallback(u64 userdata, int cycles_late) {
}
/*
- * Returns an available index in the nodes array for the
- * currently-hosted UDS network.
- */
-static u32 GetNextAvailableNodeId() {
- ASSERT_MSG(connection_status.status == static_cast<u32>(NetworkStatus::ConnectedAsHost),
- "Can not accept clients if we're not hosting a network");
-
- for (unsigned index = 0; index < connection_status.max_nodes; ++index) {
- if ((connection_status.node_bitmask & (1 << index)) == 0)
- return index;
- }
-
- // Any connection attempts to an already full network should have been refused.
- ASSERT_MSG(false, "No available connection slots in the network");
-}
-
-/*
* Called when a client connects to an UDS network we're hosting,
* updates the connection status and signals the update event.
* @param network_node_id Network Node Id of the connecting client.