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Merge pull request #18 from bluekelp/refactor-auth 

Refactor auth
This commit is contained in:
Redned 2019-08-02 16:14:56 -05:00 committed by GitHub
parent 40ff7a038b fda221c12c
commit 02fc6c2427
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GPG Key ID: 4AEE18F83AFDEB23
8 changed files with 249 additions and 127 deletions
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22
connector/src/main/java/org/geysermc/connector/GeyserConnector.java
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@ -25,8 +25,6 @@
package org.geysermc.connector;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.dataformat.yaml.YAMLFactory;
import com.nukkitx.protocol.bedrock.BedrockPacketCodec;
import com.nukkitx.protocol.bedrock.BedrockServer;
import com.nukkitx.protocol.bedrock.v361.Bedrock_v361;
@ -47,9 +45,11 @@ import org.geysermc.connector.network.translators.TranslatorsInit;
import org.geysermc.connector.plugin.GeyserPluginLoader;
import org.geysermc.connector.plugin.GeyserPluginManager;
import org.geysermc.connector.thread.PingPassthroughThread;
import org.geysermc.connector.utils.FileUtils;
import org.geysermc.connector.utils.Toolbox;
import java.io.*;
import java.io.File;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
@ -112,21 +112,11 @@ public class GeyserConnector implements Connector {
logger.info("******************************************");
try {
File configFile = new File("config.yml");
if (!configFile.exists()) {
FileOutputStream fos = new FileOutputStream(configFile);
InputStream is = GeyserConnector.class.getResourceAsStream("/config.yml");
int data;
while ((data = is.read()) != -1)
fos.write(data);
is.close();
fos.close();
}
File configFile = FileUtils.fileOrCopiedFromResource("config.yml");
ObjectMapper objectMapper = new ObjectMapper(new YAMLFactory());
config = objectMapper.readValue(configFile, GeyserConfiguration.class);
config = FileUtils.loadConfig(configFile, GeyserConfiguration.class);
} catch (IOException ex) {
logger.severe("Failed to create config.yml! Make sure it's up to date and writable!");
logger.severe("Failed to read/create config.yml! Make sure it's up to date and/or readable+writable!");
shutdown();
}

4
connector/src/main/java/org/geysermc/connector/configuration/GeyserConfiguration.java
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@ -28,12 +28,16 @@ package org.geysermc.connector.configuration;
import com.fasterxml.jackson.annotation.JsonProperty;
import lombok.Getter;
import java.util.Map;
@Getter
public class GeyserConfiguration {
private BedrockConfiguration bedrock;
private RemoteConfiguration remote;
private Map<String, UserAuthenticationInfo> userAuths;
@JsonProperty("ping-passthrough")
private boolean pingPassthrough;

31
connector/src/main/java/org/geysermc/connector/configuration/UserAuthenticationInfo.java Normal file
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@ -0,0 +1,31 @@
/*
* Copyright (c) 2019 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.configuration;
public class UserAuthenticationInfo {
public String email;
public String password;
}

126
connector/src/main/java/org/geysermc/connector/network/UpstreamPacketHandler.java
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@ -25,36 +25,14 @@
package org.geysermc.connector.network;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.node.JsonNodeType;
import com.nimbusds.jose.JWSObject;
import com.nukkitx.protocol.bedrock.BedrockPacket;
import com.nukkitx.protocol.bedrock.packet.*;
import com.nukkitx.protocol.bedrock.util.EncryptionUtils;
import net.minidev.json.JSONObject;
import org.geysermc.api.events.player.PlayerFormResponseEvent;
import org.geysermc.api.window.CustomFormBuilder;
import org.geysermc.api.window.CustomFormWindow;
import org.geysermc.api.window.FormWindow;
import org.geysermc.api.window.component.InputComponent;
import org.geysermc.api.window.component.LabelComponent;
import org.geysermc.api.window.response.CustomFormResponse;
import org.geysermc.connector.GeyserConnector;
import org.geysermc.connector.configuration.UserAuthenticationInfo;
import org.geysermc.connector.network.session.GeyserSession;
import org.geysermc.connector.network.session.auth.BedrockAuthData;
import org.geysermc.connector.network.session.cache.WindowCache;
import org.geysermc.connector.network.translators.Registry;
import org.geysermc.connector.utils.LoginEncryptionUtils;
import javax.crypto.SecretKey;
import java.io.IOException;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.PublicKey;
import java.security.interfaces.ECPublicKey;
import java.security.spec.ECGenParameterSpec;
import java.util.UUID;
public class UpstreamPacketHandler extends LoggingPacketHandler {
public UpstreamPacketHandler(GeyserConnector connector, GeyserSession session) {
@ -75,49 +53,7 @@ public class UpstreamPacketHandler extends LoggingPacketHandler {
return true;
}
JsonNode certData;
try {
certData = LoginEncryptionUtils.JSON_MAPPER.readTree(loginPacket.getChainData().toByteArray());
} catch (IOException ex) {
throw new RuntimeException("Certificate JSON can not be read.");
}
JsonNode certChainData = certData.get("chain");
if (certChainData.getNodeType() != JsonNodeType.ARRAY) {
throw new RuntimeException("Certificate data is not valid");
}
boolean validChain;
try {
validChain = LoginEncryptionUtils.validateChainData(certChainData);
connector.getLogger().debug(String.format("Is player data valid? %s", validChain));
JWSObject jwt = JWSObject.parse(certChainData.get(certChainData.size() - 1).asText());
JsonNode payload = LoginEncryptionUtils.JSON_MAPPER.readTree(jwt.getPayload().toBytes());
if (payload.get("extraData").getNodeType() != JsonNodeType.OBJECT) {
throw new RuntimeException("AuthData was not found!");
}
JSONObject extraData = (JSONObject) jwt.getPayload().toJSONObject().get("extraData");
session.setAuthenticationData(new BedrockAuthData(extraData.getAsString("displayName"), UUID.fromString(extraData.getAsString("identity")), extraData.getAsString("XUID")));
if (payload.get("identityPublicKey").getNodeType() != JsonNodeType.STRING) {
throw new RuntimeException("Identity Public Key was not found!");
}
ECPublicKey identityPublicKey = EncryptionUtils.generateKey(payload.get("identityPublicKey").textValue());
JWSObject clientJwt = JWSObject.parse(loginPacket.getSkinData().toString());
EncryptionUtils.verifyJwt(clientJwt, identityPublicKey);
if (EncryptionUtils.canUseEncryption()) {
startEncryptionHandshake(identityPublicKey);
}
} catch (Exception ex) {
session.disconnect("disconnectionScreen.internalError.cantConnect");
throw new RuntimeException("Unable to complete login", ex);
}
LoginEncryptionUtils.encryptPlayerConnection(connector, session, loginPacket);
PlayStatusPacket playStatus = new PlayStatusPacket();
playStatus.setStatus(PlayStatusPacket.Status.LOGIN_SUCCESS);
@ -153,63 +89,41 @@ public class UpstreamPacketHandler extends LoggingPacketHandler {
@Override
public boolean handle(ModalFormResponsePacket packet) {
connector.getLogger().debug("Handled packet: " + packet.getClass().getSimpleName());
WindowCache windowCache = session.getWindowCache();
if (!windowCache.getWindows().containsKey(packet.getFormId()))
return false;
return LoginEncryptionUtils.authenticateFromForm(session, connector, packet.getFormData());
}
FormWindow window = windowCache.getWindows().remove(packet.getFormId());
window.setResponse(packet.getFormData().trim());
private boolean couldLoginUserByName(String bedrockUsername) {
if (connector.getConfig().getUserAuths() != null) {
UserAuthenticationInfo info = connector.getConfig().getUserAuths().get(bedrockUsername);
if (session.isLoggedIn()) {
PlayerFormResponseEvent event = new PlayerFormResponseEvent(session, packet.getFormId(), window);
connector.getPluginManager().runEvent(event);
} else {
if (window instanceof CustomFormWindow) {
CustomFormWindow customFormWindow = (CustomFormWindow) window;
if (!customFormWindow.getTitle().equals("Login"))
return false;
if (info != null) {
connector.getLogger().info("using stored credentials for bedrock user " + session.getAuthenticationData().getName());
session.authenticate(info.email, info.password);
CustomFormResponse response = (CustomFormResponse) customFormWindow.getResponse();
session.authenticate(response.getInputResponses().get(2), response.getInputResponses().get(3));
// Clear windows so authentication data isn't accidentally cached
windowCache.getWindows().clear();
// 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 true;
return false;
}
@Override
public boolean handle(MovePlayerPacket packet) {
connector.getLogger().debug("Handled packet: " + packet.getClass().getSimpleName());
if (!session.isLoggedIn()) {
CustomFormWindow window = new CustomFormBuilder("Login")
.addComponent(new LabelComponent("Minecraft: Java Edition account authentication."))
.addComponent(new LabelComponent("Enter the credentials for your Minecraft: Java Edition account below."))
.addComponent(new InputComponent("Email/Username", "account@geysermc.org", ""))
.addComponent(new InputComponent("Password", "123456", ""))
.build();
// TODO it is safer to key authentication on something that won't change (UUID, not username)
if (!couldLoginUserByName(session.getAuthenticationData().getName())) {
LoginEncryptionUtils.showLoginWindow(session);
}
// else we were able to log the user in
session.sendForm(window, 1);
return true;
}
return false;
}
private void startEncryptionHandshake(PublicKey key) throws Exception {
KeyPairGenerator generator = KeyPairGenerator.getInstance("EC");
generator.initialize(new ECGenParameterSpec("secp384r1"));
KeyPair serverKeyPair = generator.generateKeyPair();
byte[] token = EncryptionUtils.generateRandomToken();
SecretKey encryptionKey = EncryptionUtils.getSecretKey(serverKeyPair.getPrivate(), key, token);
session.getUpstream().enableEncryption(encryptionKey);
ServerToClientHandshakePacket packet = new ServerToClientHandshakePacket();
packet.setJwt(EncryptionUtils.createHandshakeJwt(serverKeyPair, token).serialize());
session.getUpstream().sendPacketImmediately(packet);
}
@Override
public boolean handle(AnimatePacket packet) {
return translateAndDefault(packet);

8
connector/src/main/java/org/geysermc/connector/network/session/GeyserSession.java
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@ -158,8 +158,12 @@ public class GeyserSession implements PlayerSession, Player {
public void disconnect(String reason) {
if (!closed) {
loggedIn = false;
downstream.getSession().disconnect(reason);
upstream.disconnect(reason);
if (downstream != null && downstream.getSession() != null) {
downstream.getSession().disconnect(reason);
}
if (upstream != null) {
upstream.disconnect(reason);
}
}
}

35
connector/src/main/java/org/geysermc/connector/utils/FileUtils.java Normal file
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@ -0,0 +1,35 @@
package org.geysermc.connector.utils;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.dataformat.yaml.YAMLFactory;
import org.geysermc.connector.GeyserConnector;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
public class FileUtils {
public static <T> T loadConfig(File src, Class<T> valueType) throws IOException {
ObjectMapper objectMapper = new ObjectMapper(new YAMLFactory());
return objectMapper.readValue(src, valueType);
}
public static File fileOrCopiedFromResource(String name) throws IOException {
File file = new File(name);
if (!file.exists()) {
FileOutputStream fos = new FileOutputStream(file);
InputStream is = GeyserConnector.class.getResourceAsStream("/" + name); // resources need leading "/" prefix
int data;
while ((data = is.read()) != -1)
fos.write(data);
is.close();
fos.close();
}
return file;
}
}

137
connector/src/main/java/org/geysermc/connector/utils/LoginEncryptionUtils.java
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@ -6,15 +6,35 @@ import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.JsonNodeType;
import com.nimbusds.jose.JWSObject;
import com.nukkitx.network.util.Preconditions;
import com.nukkitx.protocol.bedrock.packet.LoginPacket;
import com.nukkitx.protocol.bedrock.packet.ServerToClientHandshakePacket;
import com.nukkitx.protocol.bedrock.util.EncryptionUtils;
import net.minidev.json.JSONObject;
import org.geysermc.api.events.player.PlayerFormResponseEvent;
import org.geysermc.api.window.CustomFormBuilder;
import org.geysermc.api.window.CustomFormWindow;
import org.geysermc.api.window.FormWindow;
import org.geysermc.api.window.component.InputComponent;
import org.geysermc.api.window.component.LabelComponent;
import org.geysermc.api.window.response.CustomFormResponse;
import org.geysermc.connector.GeyserConnector;
import org.geysermc.connector.network.session.GeyserSession;
import org.geysermc.connector.network.session.auth.BedrockAuthData;
import org.geysermc.connector.network.session.cache.WindowCache;
import javax.crypto.SecretKey;
import java.io.IOException;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.PublicKey;
import java.security.interfaces.ECPublicKey;
import java.security.spec.ECGenParameterSpec;
import java.util.UUID;
public class LoginEncryptionUtils {
private static final ObjectMapper JSON_MAPPER = new ObjectMapper().disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
public static final ObjectMapper JSON_MAPPER = new ObjectMapper().disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
public static boolean validateChainData(JsonNode data) throws Exception {
private static boolean validateChainData(JsonNode data) throws Exception {
ECPublicKey lastKey = null;
boolean validChain = false;
for (JsonNode node : data) {
@ -35,4 +55,115 @@ public class LoginEncryptionUtils {
}
return validChain;
}
public static void encryptPlayerConnection(GeyserConnector connector, GeyserSession session, LoginPacket loginPacket) {
JsonNode certData;
try {
certData = JSON_MAPPER.readTree(loginPacket.getChainData().toByteArray());
} catch (IOException ex) {
throw new RuntimeException("Certificate JSON can not be read.");
}
JsonNode certChainData = certData.get("chain");
if (certChainData.getNodeType() != JsonNodeType.ARRAY) {
throw new RuntimeException("Certificate data is not valid");
}
encryptConnectionWithCert(connector, session, loginPacket.getSkinData().toString(), certChainData);
}
private static void encryptConnectionWithCert(GeyserConnector connector, GeyserSession session, String playerSkin, JsonNode certChainData) {
try {
boolean validChain = validateChainData(certChainData);
connector.getLogger().debug(String.format("Is player data valid? %s", validChain));
JWSObject jwt = JWSObject.parse(certChainData.get(certChainData.size() - 1).asText());
JsonNode payload = JSON_MAPPER.readTree(jwt.getPayload().toBytes());
if (payload.get("extraData").getNodeType() != JsonNodeType.OBJECT) {
throw new RuntimeException("AuthData was not found!");
}
JSONObject extraData = (JSONObject) jwt.getPayload().toJSONObject().get("extraData");
session.setAuthenticationData(new BedrockAuthData(extraData.getAsString("displayName"), UUID.fromString(extraData.getAsString("identity")), extraData.getAsString("XUID")));
if (payload.get("identityPublicKey").getNodeType() != JsonNodeType.STRING) {
throw new RuntimeException("Identity Public Key was not found!");
}
ECPublicKey identityPublicKey = EncryptionUtils.generateKey(payload.get("identityPublicKey").textValue());
JWSObject clientJwt = JWSObject.parse(playerSkin);
EncryptionUtils.verifyJwt(clientJwt, identityPublicKey);
if (EncryptionUtils.canUseEncryption()) {
LoginEncryptionUtils.startEncryptionHandshake(session, identityPublicKey);
}
} catch (Exception ex) {
session.disconnect("disconnectionScreen.internalError.cantConnect");
throw new RuntimeException("Unable to complete login", ex);
}
}
private static void startEncryptionHandshake(GeyserSession session, PublicKey key) throws Exception {
KeyPairGenerator generator = KeyPairGenerator.getInstance("EC");
generator.initialize(new ECGenParameterSpec("secp384r1"));
KeyPair serverKeyPair = generator.generateKeyPair();
byte[] token = EncryptionUtils.generateRandomToken();
SecretKey encryptionKey = EncryptionUtils.getSecretKey(serverKeyPair.getPrivate(), key, token);
session.getUpstream().enableEncryption(encryptionKey);
ServerToClientHandshakePacket packet = new ServerToClientHandshakePacket();
packet.setJwt(EncryptionUtils.createHandshakeJwt(serverKeyPair, token).serialize());
session.getUpstream().sendPacketImmediately(packet);
}
private static int AUTH_FORM_ID = 1337;
public static void showLoginWindow(GeyserSession session) {
CustomFormWindow window = new CustomFormBuilder("Login")
.addComponent(new LabelComponent("Minecraft: Java Edition account authentication."))
.addComponent(new LabelComponent("Enter the credentials for your Minecraft: Java Edition account below."))
.addComponent(new InputComponent("Email/Username", "account@geysermc.org", ""))
.addComponent(new InputComponent("Password", "123456", ""))
.build();
session.sendForm(window, AUTH_FORM_ID);
}
public static boolean authenticateFromForm(GeyserSession session, GeyserConnector connector, String formData) {
WindowCache windowCache = session.getWindowCache();
if (!windowCache.getWindows().containsKey(AUTH_FORM_ID))
return false;
FormWindow window = windowCache.getWindows().remove(AUTH_FORM_ID);
window.setResponse(formData.trim());
if (session.isLoggedIn()) {
PlayerFormResponseEvent event = new PlayerFormResponseEvent(session, AUTH_FORM_ID, window);
connector.getPluginManager().runEvent(event);
} else {
if (window instanceof CustomFormWindow) {
CustomFormWindow customFormWindow = (CustomFormWindow) window;
if (!customFormWindow.getTitle().equals("Login"))
return false;
CustomFormResponse response = (CustomFormResponse) customFormWindow.getResponse();
if (response != null) {
String email = response.getInputResponses().get(2);
String password = response.getInputResponses().get(3);
session.authenticate(email, password);
}
// TODO should we clear the window cache in all cases or just if not already logged in?
// Clear windows so authentication data isn't accidentally cached
windowCache.getWindows().clear();
}
}
return true;
}
}

13
connector/src/main/resources/config.yml
View File

@ -21,6 +21,19 @@ remote:
port: 25565
online-mode: false
## the Xbox/MCPE username is the key for the Java server auth-info
## this allows automatic configuration/login to the remote Java server
## if you are brave/stupid enough to put your Mojang account info into
## a config file
#userAuths:
# bluerkelp2: # MCPE/Xbox username
# email: not_really_my_email_address_mr_minecrafter53267@gmail.com # Mojang account email address
# password: "this isn't really my password"
#
# herpderp40300499303040503030300500293858393589:
# email: herpderp@derpherp.com
# password: dooooo
# Relay the MOTD, player count and max players from the remote server
ping-passthrough: false