forked from GeyserMC/Geyser
287 lines
15 KiB
Java
287 lines
15 KiB
Java
/*
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* Copyright (c) 2019-2021 GeyserMC. http://geysermc.org
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* @author GeyserMC
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* @link https://github.com/GeyserMC/Geyser
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*/
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package org.geysermc.connector.utils;
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import com.fasterxml.jackson.databind.DeserializationFeature;
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import com.fasterxml.jackson.databind.JsonNode;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import com.fasterxml.jackson.databind.node.JsonNodeType;
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import com.github.steveice10.mc.auth.service.MsaAuthenticationService;
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import com.nimbusds.jose.JWSObject;
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import com.nukkitx.network.util.Preconditions;
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import com.nukkitx.protocol.bedrock.packet.LoginPacket;
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import com.nukkitx.protocol.bedrock.packet.ServerToClientHandshakePacket;
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import com.nukkitx.protocol.bedrock.util.EncryptionUtils;
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import org.geysermc.common.window.*;
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import org.geysermc.common.window.button.FormButton;
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import org.geysermc.common.window.component.InputComponent;
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import org.geysermc.common.window.component.LabelComponent;
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import org.geysermc.common.window.response.CustomFormResponse;
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import org.geysermc.common.window.response.ModalFormResponse;
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import org.geysermc.common.window.response.SimpleFormResponse;
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import org.geysermc.connector.GeyserConnector;
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import org.geysermc.connector.network.session.GeyserSession;
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import org.geysermc.connector.network.session.auth.AuthData;
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import org.geysermc.connector.network.session.auth.BedrockClientData;
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import org.geysermc.connector.network.session.cache.WindowCache;
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import javax.crypto.SecretKey;
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import java.io.IOException;
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import java.security.KeyPair;
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import java.security.KeyPairGenerator;
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import java.security.PublicKey;
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import java.security.interfaces.ECPublicKey;
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import java.security.spec.ECGenParameterSpec;
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import java.util.UUID;
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public class LoginEncryptionUtils {
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private static final ObjectMapper JSON_MAPPER = new ObjectMapper().disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
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private static boolean validateChainData(JsonNode data) throws Exception {
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ECPublicKey lastKey = null;
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boolean validChain = false;
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for (JsonNode node : data) {
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JWSObject jwt = JWSObject.parse(node.asText());
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if (!validChain) {
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validChain = EncryptionUtils.verifyJwt(jwt, EncryptionUtils.getMojangPublicKey());
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}
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if (lastKey != null) {
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if (!EncryptionUtils.verifyJwt(jwt, lastKey)) return false;
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}
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JsonNode payloadNode = JSON_MAPPER.readTree(jwt.getPayload().toString());
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JsonNode ipkNode = payloadNode.get("identityPublicKey");
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Preconditions.checkState(ipkNode != null && ipkNode.getNodeType() == JsonNodeType.STRING, "identityPublicKey node is missing in chain");
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lastKey = EncryptionUtils.generateKey(ipkNode.asText());
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}
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return validChain;
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}
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public static void encryptPlayerConnection(GeyserConnector connector, GeyserSession session, LoginPacket loginPacket) {
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JsonNode certData;
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try {
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certData = JSON_MAPPER.readTree(loginPacket.getChainData().toByteArray());
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} catch (IOException ex) {
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throw new RuntimeException("Certificate JSON can not be read.");
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}
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JsonNode certChainData = certData.get("chain");
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if (certChainData.getNodeType() != JsonNodeType.ARRAY) {
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throw new RuntimeException("Certificate data is not valid");
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}
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encryptConnectionWithCert(connector, session, loginPacket.getSkinData().toString(), certChainData);
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}
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private static void encryptConnectionWithCert(GeyserConnector connector, GeyserSession session, String clientData, JsonNode certChainData) {
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try {
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boolean validChain = validateChainData(certChainData);
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connector.getLogger().debug(String.format("Is player data valid? %s", validChain));
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if (!validChain && !session.getConnector().getConfig().isEnableProxyConnections()) {
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session.disconnect(LanguageUtils.getLocaleStringLog("geyser.network.remote.invalid_xbox_account"));
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return;
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}
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JWSObject jwt = JWSObject.parse(certChainData.get(certChainData.size() - 1).asText());
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JsonNode payload = JSON_MAPPER.readTree(jwt.getPayload().toBytes());
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if (payload.get("extraData").getNodeType() != JsonNodeType.OBJECT) {
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throw new RuntimeException("AuthData was not found!");
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}
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JsonNode extraData = payload.get("extraData");
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session.setAuthenticationData(new AuthData(
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extraData.get("displayName").asText(),
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UUID.fromString(extraData.get("identity").asText()),
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extraData.get("XUID").asText()
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));
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if (payload.get("identityPublicKey").getNodeType() != JsonNodeType.STRING) {
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throw new RuntimeException("Identity Public Key was not found!");
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}
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ECPublicKey identityPublicKey = EncryptionUtils.generateKey(payload.get("identityPublicKey").textValue());
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JWSObject clientJwt = JWSObject.parse(clientData);
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EncryptionUtils.verifyJwt(clientJwt, identityPublicKey);
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session.setClientData(JSON_MAPPER.convertValue(JSON_MAPPER.readTree(clientJwt.getPayload().toBytes()), BedrockClientData.class));
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if (EncryptionUtils.canUseEncryption()) {
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LoginEncryptionUtils.startEncryptionHandshake(session, identityPublicKey);
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}
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} catch (Exception ex) {
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session.disconnect("disconnectionScreen.internalError.cantConnect");
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throw new RuntimeException("Unable to complete login", ex);
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}
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}
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private static void startEncryptionHandshake(GeyserSession session, PublicKey key) throws Exception {
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KeyPairGenerator generator = KeyPairGenerator.getInstance("EC");
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generator.initialize(new ECGenParameterSpec("secp384r1"));
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KeyPair serverKeyPair = generator.generateKeyPair();
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byte[] token = EncryptionUtils.generateRandomToken();
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SecretKey encryptionKey = EncryptionUtils.getSecretKey(serverKeyPair.getPrivate(), key, token);
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session.getUpstream().getSession().enableEncryption(encryptionKey);
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ServerToClientHandshakePacket packet = new ServerToClientHandshakePacket();
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packet.setJwt(EncryptionUtils.createHandshakeJwt(serverKeyPair, token).serialize());
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session.sendUpstreamPacketImmediately(packet);
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}
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private static final int AUTH_MSA_DETAILS_FORM_ID = 1334;
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private static final int AUTH_MSA_CODE_FORM_ID = 1335;
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private static final int AUTH_FORM_ID = 1336;
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private static final int AUTH_DETAILS_FORM_ID = 1337;
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public static void showLoginWindow(GeyserSession session) {
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// Set DoDaylightCycle to false so the time doesn't accelerate while we're here
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session.setDaylightCycle(false);
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String userLanguage = session.getLocale();
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SimpleFormWindow window = new SimpleFormWindow(LanguageUtils.getPlayerLocaleString("geyser.auth.login.form.notice.title", userLanguage), LanguageUtils.getPlayerLocaleString("geyser.auth.login.form.notice.desc", userLanguage));
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if (session.getConnector().getConfig().getRemote().isPasswordAuthentication()) {
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window.getButtons().add(new FormButton(LanguageUtils.getPlayerLocaleString("geyser.auth.login.form.notice.btn_login.mojang", userLanguage)));
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}
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window.getButtons().add(new FormButton(LanguageUtils.getPlayerLocaleString("geyser.auth.login.form.notice.btn_login.microsoft", userLanguage)));
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window.getButtons().add(new FormButton(LanguageUtils.getPlayerLocaleString("geyser.auth.login.form.notice.btn_disconnect", userLanguage)));
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session.sendForm(window, AUTH_FORM_ID);
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}
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public static void showLoginDetailsWindow(GeyserSession session) {
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String userLanguage = session.getLocale();
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CustomFormWindow window = new CustomFormBuilder(LanguageUtils.getPlayerLocaleString("geyser.auth.login.form.details.title", userLanguage))
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.addComponent(new LabelComponent(LanguageUtils.getPlayerLocaleString("geyser.auth.login.form.details.desc", userLanguage)))
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.addComponent(new InputComponent(LanguageUtils.getPlayerLocaleString("geyser.auth.login.form.details.email", userLanguage), "account@geysermc.org", ""))
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.addComponent(new InputComponent(LanguageUtils.getPlayerLocaleString("geyser.auth.login.form.details.pass", userLanguage), "123456", ""))
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.build();
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session.sendForm(window, AUTH_DETAILS_FORM_ID);
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}
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/**
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* Prompts the user between either OAuth code login or manual password authentication
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*/
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public static void showMicrosoftAuthenticationWindow(GeyserSession session) {
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String userLanguage = session.getLocale();
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SimpleFormWindow window = new SimpleFormWindow(LanguageUtils.getPlayerLocaleString("geyser.auth.login.form.notice.btn_login.microsoft", userLanguage), "");
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window.getButtons().add(new FormButton(LanguageUtils.getPlayerLocaleString("geyser.auth.login.method.browser", userLanguage)));
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window.getButtons().add(new FormButton(LanguageUtils.getPlayerLocaleString("geyser.auth.login.method.password", userLanguage))); // This form won't show if password authentication is disabled
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window.getButtons().add(new FormButton(LanguageUtils.getPlayerLocaleString("geyser.auth.login.form.notice.btn_disconnect", userLanguage)));
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session.sendForm(window, AUTH_MSA_DETAILS_FORM_ID);
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}
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/**
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* Shows the code that a user must input into their browser
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*/
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public static void showMicrosoftCodeWindow(GeyserSession session, MsaAuthenticationService.MsCodeResponse response) {
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ModalFormWindow msaCodeWindow = new ModalFormWindow("%xbox.signin", "%xbox.signin.website\n%xbox.signin.url\n%xbox.signin.enterCode\n" +
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response.user_code, "Done", "%menu.disconnect");
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session.sendForm(msaCodeWindow, LoginEncryptionUtils.AUTH_MSA_CODE_FORM_ID);
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}
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public static boolean authenticateFromForm(GeyserSession session, GeyserConnector connector, int formId, String formData) {
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WindowCache windowCache = session.getWindowCache();
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if (!windowCache.getWindows().containsKey(formId))
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return false;
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if (formId == AUTH_MSA_DETAILS_FORM_ID || formId == AUTH_FORM_ID || formId == AUTH_DETAILS_FORM_ID || formId == AUTH_MSA_CODE_FORM_ID) {
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FormWindow window = windowCache.getWindows().remove(formId);
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window.setResponse(formData.trim());
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if (!session.isLoggedIn()) {
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if (formId == AUTH_DETAILS_FORM_ID && window instanceof CustomFormWindow) {
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CustomFormWindow customFormWindow = (CustomFormWindow) window;
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CustomFormResponse response = (CustomFormResponse) customFormWindow.getResponse();
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if (response != null) {
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String email = response.getInputResponses().get(1);
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String password = response.getInputResponses().get(2);
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session.authenticate(email, password);
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// Clear windows so authentication data isn't accidentally cached
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windowCache.getWindows().clear();
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} else {
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showLoginDetailsWindow(session);
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}
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} else if (formId == AUTH_FORM_ID && window instanceof SimpleFormWindow) {
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boolean isPasswordAuthentication = session.getConnector().getConfig().getRemote().isPasswordAuthentication();
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int microsoftButton = isPasswordAuthentication ? 1 : 0;
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int disconnectButton = isPasswordAuthentication ? 2 : 1;
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SimpleFormResponse response = (SimpleFormResponse) window.getResponse();
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if (response != null) {
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if (isPasswordAuthentication && response.getClickedButtonId() == 0) {
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session.setMicrosoftAccount(false);
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showLoginDetailsWindow(session);
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} else if (response.getClickedButtonId() == microsoftButton) {
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session.setMicrosoftAccount(true);
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if (isPasswordAuthentication) {
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showMicrosoftAuthenticationWindow(session);
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} else {
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// Just show the OAuth code
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session.authenticateWithMicrosoftCode();
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}
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} else if (response.getClickedButtonId() == disconnectButton) {
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session.disconnect(LanguageUtils.getPlayerLocaleString("geyser.auth.login.form.disconnect", session.getLocale()));
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}
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} else {
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showLoginWindow(session);
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}
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} else if (formId == AUTH_MSA_DETAILS_FORM_ID && window instanceof SimpleFormWindow) {
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SimpleFormResponse response = (SimpleFormResponse) window.getResponse();
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if (response != null) {
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if (response.getClickedButtonId() == 0) {
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session.authenticateWithMicrosoftCode();
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} else if (response.getClickedButtonId() == 1) {
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showLoginDetailsWindow(session);
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} else if (response.getClickedButtonId() == 2) {
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session.disconnect(LanguageUtils.getPlayerLocaleString("geyser.auth.login.form.disconnect", session.getLocale()));
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}
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} else {
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showLoginWindow(session);
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}
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} else if (formId == AUTH_MSA_CODE_FORM_ID && window instanceof ModalFormWindow) {
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ModalFormResponse response = (ModalFormResponse) window.getResponse();
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if (response != null) {
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if (response.getClickedButtonId() == 1) {
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session.disconnect(LanguageUtils.getPlayerLocaleString("geyser.auth.login.form.disconnect", session.getLocale()));
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}
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} else {
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showMicrosoftAuthenticationWindow(session);
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}
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}
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}
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}
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return true;
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}
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}
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