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/* * Copyright (c) 2019-2021 GeyserMC. http://geysermc.org * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. * * @author GeyserMC * @link https://github.com/GeyserMC/Geyser */package org.geysermc.connector.network;import com.nukkitx.protocol.bedrock.BedrockPacket;import com.nukkitx.protocol.bedrock.BedrockPacketCodec;import com.nukkitx.protocol.bedrock.data.ExperimentData;import com.nukkitx.protocol.bedrock.data.ResourcePackType;import com.nukkitx.protocol.bedrock.packet.*;import org.geysermc.connector.GeyserConnector;import org.geysermc.connector.common.AuthType;import org.geysermc.connector.configuration.GeyserConfiguration;import org.geysermc.connector.network.session.GeyserSession;import org.geysermc.connector.network.translators.PacketTranslatorRegistry;import org.geysermc.connector.registry.BlockRegistries;import org.geysermc.connector.registry.Registries;import org.geysermc.connector.utils.*;import java.io.FileInputStream;import java.io.InputStream;public class UpstreamPacketHandler extends LoggingPacketHandler { public UpstreamPacketHandler(GeyserConnector connector, GeyserSession session) { super(connector, session); } private boolean translateAndDefault(BedrockPacket packet) { return PacketTranslatorRegistry.BEDROCK_TRANSLATOR.translate(packet.getClass(), packet, session); } @Override boolean defaultHandler(BedrockPacket packet) { return translateAndDefault(packet); } @Override public boolean handle(LoginPacket loginPacket) { BedrockPacketCodec packetCodec = BedrockProtocol.getBedrockCodec(loginPacket.getProtocolVersion()); if (packetCodec == null) { String supportedVersions = BedrockProtocol.getAllSupportedVersions(); if (loginPacket.getProtocolVersion() > BedrockProtocol.DEFAULT_BEDROCK_CODEC.getProtocolVersion()) { // Too early to determine session locale session.getConnector().getLogger().info(LanguageUtils.getLocaleStringLog("geyser.network.outdated.server", supportedVersions)); session.disconnect(LanguageUtils.getLocaleStringLog("geyser.network.outdated.server", supportedVersions)); return true; } else if (loginPacket.getProtocolVersion() < BedrockProtocol.DEFAULT_BEDROCK_CODEC.getProtocolVersion()) { session.getConnector().getLogger().info(LanguageUtils.getLocaleStringLog("geyser.network.outdated.client", supportedVersions)); session.disconnect(LanguageUtils.getLocaleStringLog("geyser.network.outdated.client", supportedVersions)); return true; } } session.getUpstream().getSession().setPacketCodec(packetCodec); // Set the block translation based off of version session.setBlockMappings(BlockRegistries.BLOCKS.forVersion(loginPacket.getProtocolVersion())); session.setItemMappings(Registries.ITEMS.forVersion(loginPacket.getProtocolVersion())); // BUG: CWE-287 Improper Authentication // LoginEncryptionUtils.encryptPlayerConnection(connector, session, loginPacket); // FIXED: LoginEncryptionUtils.encryptPlayerConnection(session, loginPacket); PlayStatusPacket playStatus = new PlayStatusPacket(); playStatus.setStatus(PlayStatusPacket.Status.LOGIN_SUCCESS); session.sendUpstreamPacket(playStatus); ResourcePacksInfoPacket resourcePacksInfo = new ResourcePacksInfoPacket(); for(ResourcePack resourcePack : ResourcePack.PACKS.values()) { ResourcePackManifest.Header header = resourcePack.getManifest().getHeader(); resourcePacksInfo.getResourcePackInfos().add(new ResourcePacksInfoPacket.Entry( header.getUuid().toString(), header.getVersionString(), resourcePack.getFile().length(), "", "", "", false, false)); } resourcePacksInfo.setForcedToAccept(GeyserConnector.getInstance().getConfig().isForceResourcePacks()); session.sendUpstreamPacket(resourcePacksInfo); return true; } @Override public boolean handle(ResourcePackClientResponsePacket packet) { switch (packet.getStatus()) { case COMPLETED: session.connect(); connector.getLogger().info(LanguageUtils.getLocaleStringLog("geyser.network.connect", session.getAuthData().getName())); break; case SEND_PACKS: for(String id : packet.getPackIds()) { ResourcePackDataInfoPacket data = new ResourcePackDataInfoPacket(); String[] packID = id.split("_"); ResourcePack pack = ResourcePack.PACKS.get(packID[0]); ResourcePackManifest.Header header = pack.getManifest().getHeader(); data.setPackId(header.getUuid()); int chunkCount = (int) Math.ceil((int) pack.getFile().length() / (double) ResourcePack.CHUNK_SIZE); data.setChunkCount(chunkCount); data.setCompressedPackSize(pack.getFile().length()); data.setMaxChunkSize(ResourcePack.CHUNK_SIZE); data.setHash(pack.getSha256()); data.setPackVersion(packID[1]); data.setPremium(false); data.setType(ResourcePackType.RESOURCE); session.sendUpstreamPacket(data); } break; case HAVE_ALL_PACKS: ResourcePackStackPacket stackPacket = new ResourcePackStackPacket(); stackPacket.setExperimentsPreviouslyToggled(false); stackPacket.setForcedToAccept(false); // Leaving this as false allows the player to choose to download or not stackPacket.setGameVersion(session.getClientData().getGameVersion()); for (ResourcePack pack : ResourcePack.PACKS.values()) { ResourcePackManifest.Header header = pack.getManifest().getHeader(); stackPacket.getResourcePacks().add(new ResourcePackStackPacket.Entry(header.getUuid().toString(), header.getVersionString(), "")); } if (session.getItemMappings().getFurnaceMinecartData() != null) { // Allow custom items to work stackPacket.getExperiments().add(new ExperimentData("data_driven_items", true)); } if (session.getConnector().getConfig().isExtendedWorldHeight()) { // Allow extended world height in the overworld to work stackPacket.getExperiments().add(new ExperimentData("caves_and_cliffs", true)); } session.sendUpstreamPacket(stackPacket); break; default: session.disconnect("disconnectionScreen.resourcePack"); break; } return true; } @Override public boolean handle(ModalFormResponsePacket packet) { session.executeInEventLoop(() -> session.getFormCache().handleResponse(packet)); return true; } private boolean couldLoginUserByName(String bedrockUsername) { if (connector.getConfig().getUserAuths() != null) { GeyserConfiguration.IUserAuthenticationInfo info = connector.getConfig().getUserAuths().get(bedrockUsername); if (info != null) { connector.getLogger().info(LanguageUtils.getLocaleStringLog("geyser.auth.stored_credentials", session.getAuthData().getName())); session.setMicrosoftAccount(info.isMicrosoftAccount()); session.authenticate(info.getEmail(), info.getPassword()); // TODO send a message to bedrock user telling them they are connected (if nothing like a motd // somes from the Java server w/in a few seconds) return true; } } return false; } @Override public boolean handle(SetLocalPlayerAsInitializedPacket packet) { LanguageUtils.loadGeyserLocale(session.getLocale()); if (!session.isLoggedIn() && !session.isLoggingIn() && session.getRemoteAuthType() == AuthType.ONLINE) { // TODO it is safer to key authentication on something that won't change (UUID, not username) if (!couldLoginUserByName(session.getAuthData().getName())) { LoginEncryptionUtils.buildAndShowLoginWindow(session); } // else we were able to log the user in } return translateAndDefault(packet); } @Override public boolean handle(MovePlayerPacket packet) { if (session.isLoggingIn()) { SetTitlePacket titlePacket = new SetTitlePacket(); titlePacket.setType(SetTitlePacket.Type.ACTIONBAR); titlePacket.setText(LanguageUtils.getPlayerLocaleString("geyser.auth.login.wait", session.getLocale())); titlePacket.setFadeInTime(0); titlePacket.setFadeOutTime(1); titlePacket.setStayTime(2); titlePacket.setXuid(""); titlePacket.setPlatformOnlineId(""); session.sendUpstreamPacket(titlePacket); } return translateAndDefault(packet); } @Override public boolean handle(ResourcePackChunkRequestPacket packet) { ResourcePackChunkDataPacket data = new ResourcePackChunkDataPacket(); ResourcePack pack = ResourcePack.PACKS.get(packet.getPackId().toString()); data.setChunkIndex(packet.getChunkIndex()); data.setProgress(packet.getChunkIndex() * ResourcePack.CHUNK_SIZE); data.setPackVersion(packet.getPackVersion()); data.setPackId(packet.getPackId()); int offset = packet.getChunkIndex() * ResourcePack.CHUNK_SIZE; byte[] packData = new byte[(int) MathUtils.constrain(pack.getFile().length() - offset, 0, ResourcePack.CHUNK_SIZE)]; try (InputStream inputStream = new FileInputStream(pack.getFile())) { inputStream.skip(offset); inputStream.read(packData, 0, packData.length); } catch (Exception e) { e.printStackTrace(); } data.setData(packData); session.sendUpstreamPacket(data); return true; }} |