1 files changed, 0 insertions, 174 deletions
diff --git a/src/main/java/moe/ymc/acron/net/WSFrameHandler.java b/src/main/java/moe/ymc/acron/net/WSFrameHandler.java
deleted file mode 100644
index 912e73a..0000000
--- a/src/main/java/moe/ymc/acron/net/WSFrameHandler.java
+++ /dev/null
@@ -1,174 +0,0 @@
-package moe.ymc.acron.net;
-
-import com.google.gson.JsonParseException;
-import io.netty.channel.Channel;
-import io.netty.channel.ChannelHandlerContext;
-import io.netty.channel.SimpleChannelInboundHandler;
-import io.netty.handler.codec.http.websocketx.*;
-import moe.ymc.acron.MinecraftServerHolder;
-import moe.ymc.acron.auth.Action;
-import moe.ymc.acron.auth.PolicyChecker;
-import moe.ymc.acron.c2s.ReqCmd;
-import moe.ymc.acron.c2s.ReqSetConfig;
-import moe.ymc.acron.c2s.Request;
-import moe.ymc.acron.cmd.CmdQueue;
-import moe.ymc.acron.jvav.Pair;
-import moe.ymc.acron.s2c.Event;
-import moe.ymc.acron.s2c.EventQueue;
-import moe.ymc.acron.s2c.response.EventError;
-import moe.ymc.acron.s2c.response.EventOk;
-import moe.ymc.acron.serialization.Serializer;
-import net.minecraft.server.world.ServerWorld;
-import net.minecraft.util.math.Vec2f;
-import net.minecraft.util.math.Vec3d;
-import net.minecraft.world.World;
-import org.apache.logging.log4j.LogManager;
-import org.apache.logging.log4j.Logger;
-import org.jetbrains.annotations.NotNull;
-
-/**
- * The handler for WebSocket requests.
- */
-public class WSFrameHandler extends SimpleChannelInboundHandler<WebSocketFrame> {
-    private static final Logger LOGGER = LogManager.getLogger();
-
-    @Override
-    public void handlerAdded(ChannelHandlerContext ctx) throws Exception {
-        super.handlerAdded(ctx);
-    }
-
-    @Override
-    protected void channelRead0(ChannelHandlerContext ctx, WebSocketFrame msg) throws Exception {
-        LOGGER.debug("channelRead0: {} {}",
-                this,
-                ctx.channel());
-        final WebSocketServerHandshaker handshaker =
-                ctx.channel().attr(Attributes.HANDSHAKER).get();
-        if (msg instanceof CloseWebSocketFrame) {
-            handshaker.close(ctx.channel(), (CloseWebSocketFrame) msg.retain());
-            return;
-        }
-        if (msg instanceof PingWebSocketFrame) {
-            ctx.write(new PongWebSocketFrame(msg.content().retain()));
-            return;
-        }
-        if (msg instanceof BinaryWebSocketFrame) {
-            throw new UnsupportedOperationException("Only text frames are accepted.");
-        }
-        final TextWebSocketFrame frame = (TextWebSocketFrame) msg;
-
-        final ClientIdentification identification = ctx.channel().attr(Attributes.ID).get();
-        final ClientConfiguration configuration = ctx.channel().attr(Attributes.CONFIGURATION).get();
-        int id;
-        final Request request;
-        try {
-            request = Serializer.deserialize(frame);
-            id = request.getId();
-        } catch (JsonParseException | IllegalArgumentException | IllegalStateException e) {
-            ctx.channel().writeAndFlush(
-                    Serializer.serialize(new EventError(-2, EventError.Code.BAD_REQUEST.value, e.getMessage()))
-            );
-            return;
-        }
-        try {
-            ctx.channel().writeAndFlush(Serializer.serialize(handle(request,
-                    identification,
-                    configuration,
-                    ctx.channel())));
-        } catch (Throwable e) {
-            LOGGER.info("An error occurred while processing the request. " +
-                            "This may just be a malformed request. " +
-                            "It is reported to the client.",
-                    e);
-            ctx.channel().writeAndFlush(
-                    Serializer.serialize(new EventError(id, EventError.Code.SERVER_ERROR.value, e.getMessage()))
-            );
-        }
-    }
-
-    @NotNull
-    private Event handle(@NotNull Request request,
-                         @NotNull ClientIdentification identification,
-                         @NotNull ClientConfiguration configuration,
-                         @NotNull Channel channel) throws Throwable {
-        if (request instanceof final ReqCmd reqCmd) {
-            LOGGER.info("Client {} executed a command: `{}`.",
-                    identification.client().id(),
-                    reqCmd.cmd());
-            final Pair<Action, Boolean> res = PolicyChecker.check(identification.client(),
-                    reqCmd.cmd());
-            if (res.l() == Action.DENY) {
-                return new EventError(reqCmd.id(),
-                        EventError.Code.FORBIDDEN.value, "This client is not allowed to " +
-                        "execute this command.");
-            }
-            // TODO: Ok event may be sent after executing the command.
-            CmdQueue.enqueue(reqCmd.id(),
-                    res.r(),
-                    channel,
-                    reqCmd.config() == null ?
-                            configuration :
-                            convertConfiguration(reqCmd.config()),
-                    reqCmd.cmd());
-            return new EventOk(request.getId());
-        } else if (request instanceof final ReqSetConfig reqSetConfig) {
-            channel.attr(Attributes.CONFIGURATION).set(convertConfiguration(reqSetConfig));
-            return new EventOk(request.getId());
-        }
-        // This should not occur.
-        throw new IllegalStateException("This should not occur.");
-    }
-
-    private ClientConfiguration convertConfiguration(@NotNull ReqSetConfig request) {
-        final ServerWorld world;
-        if (request.world() != null) {
-            switch (request.world()) {
-                case OVERWORLD -> world = MinecraftServerHolder.getServer().getWorld(World.OVERWORLD);
-                case NETHER -> world = MinecraftServerHolder.getServer().getWorld(World.NETHER);
-                case END -> world = MinecraftServerHolder.getServer().getWorld(World.END);
-                default -> throw new IllegalArgumentException();
-            }
-        } else {
-            world = MinecraftServerHolder.getServer().getOverworld();
-        }
-        if (world == null) {
-            throw new IllegalStateException(String.format("The requested world %s is not available at this time.",
-                    request.world()));
-        }
-        return new ClientConfiguration(
-                request.pos() == null ?
-                        Vec3d.of(world.getSpawnPos()) :
-                        new Vec3d(request.pos().x(), request.pos().y(), request.pos().z()),
-                request.rot() == null ?
-                        Vec2f.ZERO :
-                        new Vec2f(request.rot().x(), request.rot().y()),
-                world,
-                request.name() == null ? this.toString() : request.name()
-        );
-    }
-
-    @Override
-    public void userEventTriggered(ChannelHandlerContext ctx, Object evt) throws Exception {
-        LOGGER.debug("handshakeComplete: {} {}",
-                this,
-                ctx.channel());
-        if (evt instanceof HandshakeComplete) {
-            final ClientIdentification identification = ctx.channel().attr(Attributes.ID).get();
-            LOGGER.info("Client {} connected. It has {} rules with {} policy mode.",
-                    identification.client().id(),
-                    identification.client().rules().length,
-                    identification.client().policyMode());
-            final ServerWorld defaultWorld = MinecraftServerHolder.getServer().getOverworld();
-            if (defaultWorld == null) {
-                throw new IllegalStateException("The default world is not available at this time.");
-            }
-            final ClientConfiguration configuration =
-                    new ClientConfiguration(defaultWorld,
-                            identification.client().id());
-            ctx.channel().attr(Attributes.CONFIGURATION).set(configuration);
-            EventQueue.registerMessageRecipient(ctx.channel());
-        } else {
-            ctx.fireUserEventTriggered(evt);
-        }
-    }
-}