Examples with VersionProvider com.viaversion.viaversion.api.protocol.version.VersionProvider used on opensource projects

Example 1 with VersionProvider

use of com.viaversion.viaversion.api.protocol.version.VersionProvider in project ViaVersion by ViaVersion.

the class BaseProtocol1_7 method registerPackets.

@Override
protected void registerPackets() {
    /* Outgoing Packets */
    // Status Response Packet
    registerClientbound(ClientboundStatusPackets.STATUS_RESPONSE, new // Status Response Packet
    PacketRemapper() {

        @Override
        public void registerMap() {
            map(Type.STRING);
            handler(new PacketHandler() {

                @Override
                public void handle(PacketWrapper wrapper) throws Exception {
                    ProtocolInfo info = wrapper.user().getProtocolInfo();
                    String originalStatus = wrapper.get(Type.STRING, 0);
                    try {
                        JsonElement json = GsonUtil.getGson().fromJson(originalStatus, JsonElement.class);
                        JsonObject version;
                        // Unknown!
                        int protocolVersion = 0;
                        if (json.isJsonObject()) {
                            if (json.getAsJsonObject().has("version")) {
                                version = json.getAsJsonObject().get("version").getAsJsonObject();
                                if (version.has("protocol")) {
                                    protocolVersion = ((Long) version.get("protocol").getAsLong()).intValue();
                                }
                            } else {
                                json.getAsJsonObject().add("version", version = new JsonObject());
                            }
                        } else {
                            // Format properly
                            json = new JsonObject();
                            json.getAsJsonObject().add("version", version = new JsonObject());
                        }
                        if (Via.getConfig().isSendSupportedVersions()) {
                            // Send supported versions
                            version.add("supportedVersions", GsonUtil.getGson().toJsonTree(Via.getAPI().getSupportedVersions()));
                        }
                        if (!Via.getAPI().getServerVersion().isKnown()) {
                            // Set the Server protocol if the detection on startup failed
                            ProtocolManagerImpl protocolManager = (ProtocolManagerImpl) Via.getManager().getProtocolManager();
                            protocolManager.setServerProtocol(new ServerProtocolVersionSingleton(ProtocolVersion.getProtocol(protocolVersion).getVersion()));
                        }
                        // Ensure the server has a version provider
                        VersionProvider versionProvider = Via.getManager().getProviders().get(VersionProvider.class);
                        if (versionProvider == null) {
                            wrapper.user().setActive(false);
                            return;
                        }
                        int closestServerProtocol = versionProvider.getClosestServerProtocol(wrapper.user());
                        List<ProtocolPathEntry> protocols = null;
                        if (info.getProtocolVersion() >= closestServerProtocol || Via.getPlatform().isOldClientsAllowed()) {
                            protocols = Via.getManager().getProtocolManager().getProtocolPath(info.getProtocolVersion(), closestServerProtocol);
                        }
                        if (protocols != null) {
                            if (protocolVersion == closestServerProtocol || protocolVersion == 0) {
                                // Fix ServerListPlus
                                ProtocolVersion prot = ProtocolVersion.getProtocol(info.getProtocolVersion());
                                version.addProperty("protocol", prot.getOriginalVersion());
                            }
                        } else {
                            // not compatible :(, *plays very sad violin*
                            wrapper.user().setActive(false);
                        }
                        if (Via.getConfig().blockedProtocolVersions().contains(info.getProtocolVersion())) {
                            // Show blocked versions as outdated
                            version.addProperty("protocol", -1);
                        }
                        // Update value
                        wrapper.set(Type.STRING, 0, GsonUtil.getGson().toJson(json));
                    } catch (JsonParseException e) {
                        e.printStackTrace();
                    }
                }
            });
        }
    });
    // Login Success Packet
    registerClientbound(ClientboundLoginPackets.GAME_PROFILE, new PacketRemapper() {

        @Override
        public void registerMap() {
            handler(new PacketHandler() {

                @Override
                public void handle(PacketWrapper wrapper) throws Exception {
                    ProtocolInfo info = wrapper.user().getProtocolInfo();
                    info.setState(State.PLAY);
                    UUID uuid = passthroughLoginUUID(wrapper);
                    info.setUuid(uuid);
                    String username = wrapper.passthrough(Type.STRING);
                    info.setUsername(username);
                    // Add to ported clients
                    Via.getManager().getConnectionManager().onLoginSuccess(wrapper.user());
                    if (!info.getPipeline().hasNonBaseProtocols()) {
                        // Only base protocol
                        wrapper.user().setActive(false);
                    }
                    if (Via.getManager().isDebug()) {
                        // Print out the route to console
                        Via.getPlatform().getLogger().log(Level.INFO, "{0} logged in with protocol {1}, Route: {2}", new Object[] { username, info.getProtocolVersion(), Joiner.on(", ").join(info.getPipeline().pipes(), ", ") });
                    }
                }
            });
        }
    });
    /* Incoming Packets */
    // Login Start Packet
    registerServerbound(ServerboundLoginPackets.HELLO, new PacketRemapper() {

        @Override
        public void registerMap() {
            handler(new PacketHandler() {

                @Override
                public void handle(final PacketWrapper wrapper) throws Exception {
                    int protocol = wrapper.user().getProtocolInfo().getProtocolVersion();
                    if (Via.getConfig().blockedProtocolVersions().contains(protocol)) {
                        if (!wrapper.user().getChannel().isOpen())
                            return;
                        if (!wrapper.user().shouldApplyBlockProtocol())
                            return;
                        // Disconnect Packet
                        PacketWrapper disconnectPacket = PacketWrapper.create(ClientboundLoginPackets.LOGIN_DISCONNECT, wrapper.user());
                        Protocol1_9To1_8.FIX_JSON.write(disconnectPacket, ChatColorUtil.translateAlternateColorCodes(Via.getConfig().getBlockedDisconnectMsg()));
                        // cancel current
                        wrapper.cancel();
                        // Send and close
                        ChannelFuture future = disconnectPacket.sendFuture(BaseProtocol.class);
                        future.addListener(f -> wrapper.user().getChannel().close());
                    }
                }
            });
        }
    });
}