Run Spotless on src/main

src/main/java/emu/grasscutter/server/http/dispatch/DispatchHandler.java

@@ -1,130 +1,160 @@
-package emu.grasscutter.server.http.dispatch;
-
-import emu.grasscutter.Grasscutter;
-import emu.grasscutter.auth.AuthenticationSystem;
-import emu.grasscutter.auth.OAuthAuthenticator.ClientType;
-import emu.grasscutter.server.http.Router;
-import emu.grasscutter.server.http.objects.ComboTokenReqJson;
-import emu.grasscutter.server.http.objects.ComboTokenReqJson.LoginTokenData;
-import emu.grasscutter.server.http.objects.LoginAccountRequestJson;
-import emu.grasscutter.server.http.objects.LoginTokenRequestJson;
-import emu.grasscutter.utils.JsonUtils;
-import io.javalin.Javalin;
-import io.javalin.http.Context;
-
-import static emu.grasscutter.utils.Language.translate;
-
-/**
- * Handles requests related to authentication. (aka dispatch)
- */
-public final class DispatchHandler implements Router {
-    /**
-     * @route /hk4e_global/mdk/shield/api/login
-     */
-    private static void clientLogin(Context ctx) {
-        // Parse body data.
-        String rawBodyData = ctx.body();
-        var bodyData = JsonUtils.decode(rawBodyData, LoginAccountRequestJson.class);
-
-        // Validate body data.
-        if (bodyData == null)
-            return;
-
-        // Pass data to authentication handler.
-        var responseData = Grasscutter.getAuthenticationSystem()
-            .getPasswordAuthenticator()
-            .authenticate(AuthenticationSystem.fromPasswordRequest(ctx, bodyData));
-        // Send response.
-        ctx.json(responseData);
-
-        // Log to console.
-        Grasscutter.getLogger().info(translate("messages.dispatch.account.login_attempt", ctx.ip()));
-    }
-
-    /**
-     * @route /hk4e_global/mdk/shield/api/verify
-     */
-    private static void tokenLogin(Context ctx) {
-        // Parse body data.
-        String rawBodyData = ctx.body();
-        var bodyData = JsonUtils.decode(rawBodyData, LoginTokenRequestJson.class);
-
-        // Validate body data.
-        if (bodyData == null)
-            return;
-
-        // Pass data to authentication handler.
-        var responseData = Grasscutter.getAuthenticationSystem()
-            .getTokenAuthenticator()
-            .authenticate(AuthenticationSystem.fromTokenRequest(ctx, bodyData));
-        // Send response.
-        ctx.json(responseData);
-
-        // Log to console.
-        Grasscutter.getLogger().info(translate("messages.dispatch.account.login_attempt", ctx.ip()));
-    }
-
-    /**
-     * @route /hk4e_global/combo/granter/login/v2/login
-     */
-    private static void sessionKeyLogin(Context ctx) {
-        // Parse body data.
-        String rawBodyData = ctx.body();
-        var bodyData = JsonUtils.decode(rawBodyData, ComboTokenReqJson.class);
-
-        // Validate body data.
-        if (bodyData == null || bodyData.data == null)
-            return;
-
-        // Decode additional body data.
-        var tokenData = JsonUtils.decode(bodyData.data, LoginTokenData.class);
-
-        // Pass data to authentication handler.
-        var responseData = Grasscutter.getAuthenticationSystem()
-            .getSessionKeyAuthenticator()
-            .authenticate(AuthenticationSystem.fromComboTokenRequest(ctx, bodyData, tokenData));
-        // Send response.
-        ctx.json(responseData);
-
-        // Log to console.
-        Grasscutter.getLogger().info(translate("messages.dispatch.account.login_attempt", ctx.ip()));
-    }
-
-    @Override
-    public void applyRoutes(Javalin javalin) {
-        // OS
-        // Username & Password login (from client).
-        javalin.post("/hk4e_global/mdk/shield/api/login", DispatchHandler::clientLogin);
-        // Cached token login (from registry).
-        javalin.post("/hk4e_global/mdk/shield/api/verify", DispatchHandler::tokenLogin);
-        // Combo token login (from session key).
-        javalin.post("/hk4e_global/combo/granter/login/v2/login", DispatchHandler::sessionKeyLogin);
-
-        // CN
-        // Username & Password login (from client).
-        javalin.post("/hk4e_cn/mdk/shield/api/login", DispatchHandler::clientLogin);
-        // Cached token login (from registry).
-        javalin.post("/hk4e_cn/mdk/shield/api/verify", DispatchHandler::tokenLogin);
-        // Combo token login (from session key).
-        javalin.post("/hk4e_cn/combo/granter/login/v2/login", DispatchHandler::sessionKeyLogin);
-
-        // External login (from other clients).
-        javalin.get("/authentication/type", ctx -> ctx.result(Grasscutter.getAuthenticationSystem().getClass().getSimpleName()));
-        javalin.post("/authentication/login", ctx -> Grasscutter.getAuthenticationSystem().getExternalAuthenticator()
-            .handleLogin(AuthenticationSystem.fromExternalRequest(ctx)));
-        javalin.post("/authentication/register", ctx -> Grasscutter.getAuthenticationSystem().getExternalAuthenticator()
-            .handleAccountCreation(AuthenticationSystem.fromExternalRequest(ctx)));
-        javalin.post("/authentication/change_password", ctx -> Grasscutter.getAuthenticationSystem().getExternalAuthenticator()
-            .handlePasswordReset(AuthenticationSystem.fromExternalRequest(ctx)));
-
-        // External login (from OAuth2).
-        javalin.post("/hk4e_global/mdk/shield/api/loginByThirdparty", ctx -> Grasscutter.getAuthenticationSystem().getOAuthAuthenticator()
-            .handleLogin(AuthenticationSystem.fromExternalRequest(ctx)));
-        javalin.get("/authentication/openid/redirect", ctx -> Grasscutter.getAuthenticationSystem().getOAuthAuthenticator()
-            .handleTokenProcess(AuthenticationSystem.fromExternalRequest(ctx)));
-        javalin.get("/Api/twitter_login", ctx -> Grasscutter.getAuthenticationSystem().getOAuthAuthenticator()
-            .handleRedirection(AuthenticationSystem.fromExternalRequest(ctx), ClientType.DESKTOP));
-        javalin.get("/sdkTwitterLogin.html", ctx -> Grasscutter.getAuthenticationSystem().getOAuthAuthenticator()
-            .handleRedirection(AuthenticationSystem.fromExternalRequest(ctx), ClientType.MOBILE));
-    }
-}
+package emu.grasscutter.server.http.dispatch;
+
+import static emu.grasscutter.utils.Language.translate;
+
+import emu.grasscutter.Grasscutter;
+import emu.grasscutter.auth.AuthenticationSystem;
+import emu.grasscutter.auth.OAuthAuthenticator.ClientType;
+import emu.grasscutter.server.http.Router;
+import emu.grasscutter.server.http.objects.ComboTokenReqJson;
+import emu.grasscutter.server.http.objects.ComboTokenReqJson.LoginTokenData;
+import emu.grasscutter.server.http.objects.LoginAccountRequestJson;
+import emu.grasscutter.server.http.objects.LoginTokenRequestJson;
+import emu.grasscutter.utils.JsonUtils;
+import io.javalin.Javalin;
+import io.javalin.http.Context;
+
+/** Handles requests related to authentication. (aka dispatch) */
+public final class DispatchHandler implements Router {
+    /**
+     * @route /hk4e_global/mdk/shield/api/login
+     */
+    private static void clientLogin(Context ctx) {
+        // Parse body data.
+        String rawBodyData = ctx.body();
+        var bodyData = JsonUtils.decode(rawBodyData, LoginAccountRequestJson.class);
+
+        // Validate body data.
+        if (bodyData == null) return;
+
+        // Pass data to authentication handler.
+        var responseData =
+                Grasscutter.getAuthenticationSystem()
+                        .getPasswordAuthenticator()
+                        .authenticate(AuthenticationSystem.fromPasswordRequest(ctx, bodyData));
+        // Send response.
+        ctx.json(responseData);
+
+        // Log to console.
+        Grasscutter.getLogger().info(translate("messages.dispatch.account.login_attempt", ctx.ip()));
+    }
+
+    /**
+     * @route /hk4e_global/mdk/shield/api/verify
+     */
+    private static void tokenLogin(Context ctx) {
+        // Parse body data.
+        String rawBodyData = ctx.body();
+        var bodyData = JsonUtils.decode(rawBodyData, LoginTokenRequestJson.class);
+
+        // Validate body data.
+        if (bodyData == null) return;
+
+        // Pass data to authentication handler.
+        var responseData =
+                Grasscutter.getAuthenticationSystem()
+                        .getTokenAuthenticator()
+                        .authenticate(AuthenticationSystem.fromTokenRequest(ctx, bodyData));
+        // Send response.
+        ctx.json(responseData);
+
+        // Log to console.
+        Grasscutter.getLogger().info(translate("messages.dispatch.account.login_attempt", ctx.ip()));
+    }
+
+    /**
+     * @route /hk4e_global/combo/granter/login/v2/login
+     */
+    private static void sessionKeyLogin(Context ctx) {
+        // Parse body data.
+        String rawBodyData = ctx.body();
+        var bodyData = JsonUtils.decode(rawBodyData, ComboTokenReqJson.class);
+
+        // Validate body data.
+        if (bodyData == null || bodyData.data == null) return;
+
+        // Decode additional body data.
+        var tokenData = JsonUtils.decode(bodyData.data, LoginTokenData.class);
+
+        // Pass data to authentication handler.
+        var responseData =
+                Grasscutter.getAuthenticationSystem()
+                        .getSessionKeyAuthenticator()
+                        .authenticate(AuthenticationSystem.fromComboTokenRequest(ctx, bodyData, tokenData));
+        // Send response.
+        ctx.json(responseData);
+
+        // Log to console.
+        Grasscutter.getLogger().info(translate("messages.dispatch.account.login_attempt", ctx.ip()));
+    }
+
+    @Override
+    public void applyRoutes(Javalin javalin) {
+        // OS
+        // Username & Password login (from client).
+        javalin.post("/hk4e_global/mdk/shield/api/login", DispatchHandler::clientLogin);
+        // Cached token login (from registry).
+        javalin.post("/hk4e_global/mdk/shield/api/verify", DispatchHandler::tokenLogin);
+        // Combo token login (from session key).
+        javalin.post("/hk4e_global/combo/granter/login/v2/login", DispatchHandler::sessionKeyLogin);
+
+        // CN
+        // Username & Password login (from client).
+        javalin.post("/hk4e_cn/mdk/shield/api/login", DispatchHandler::clientLogin);
+        // Cached token login (from registry).
+        javalin.post("/hk4e_cn/mdk/shield/api/verify", DispatchHandler::tokenLogin);
+        // Combo token login (from session key).
+        javalin.post("/hk4e_cn/combo/granter/login/v2/login", DispatchHandler::sessionKeyLogin);
+
+        // External login (from other clients).
+        javalin.get(
+                "/authentication/type",
+                ctx -> ctx.result(Grasscutter.getAuthenticationSystem().getClass().getSimpleName()));
+        javalin.post(
+                "/authentication/login",
+                ctx ->
+                        Grasscutter.getAuthenticationSystem()
+                                .getExternalAuthenticator()
+                                .handleLogin(AuthenticationSystem.fromExternalRequest(ctx)));
+        javalin.post(
+                "/authentication/register",
+                ctx ->
+                        Grasscutter.getAuthenticationSystem()
+                                .getExternalAuthenticator()
+                                .handleAccountCreation(AuthenticationSystem.fromExternalRequest(ctx)));
+        javalin.post(
+                "/authentication/change_password",
+                ctx ->
+                        Grasscutter.getAuthenticationSystem()
+                                .getExternalAuthenticator()
+                                .handlePasswordReset(AuthenticationSystem.fromExternalRequest(ctx)));
+
+        // External login (from OAuth2).
+        javalin.post(
+                "/hk4e_global/mdk/shield/api/loginByThirdparty",
+                ctx ->
+                        Grasscutter.getAuthenticationSystem()
+                                .getOAuthAuthenticator()
+                                .handleLogin(AuthenticationSystem.fromExternalRequest(ctx)));
+        javalin.get(
+                "/authentication/openid/redirect",
+                ctx ->
+                        Grasscutter.getAuthenticationSystem()
+                                .getOAuthAuthenticator()
+                                .handleTokenProcess(AuthenticationSystem.fromExternalRequest(ctx)));
+        javalin.get(
+                "/Api/twitter_login",
+                ctx ->
+                        Grasscutter.getAuthenticationSystem()
+                                .getOAuthAuthenticator()
+                                .handleRedirection(
+                                        AuthenticationSystem.fromExternalRequest(ctx), ClientType.DESKTOP));
+        javalin.get(
+                "/sdkTwitterLogin.html",
+                ctx ->
+                        Grasscutter.getAuthenticationSystem()
+                                .getOAuthAuthenticator()
+                                .handleRedirection(
+                                        AuthenticationSystem.fromExternalRequest(ctx), ClientType.MOBILE));
+    }
+}

src/main/java/emu/grasscutter/server/http/dispatch/RegionHandler.java

@@ -1,304 +1,330 @@
-package emu.grasscutter.server.http.dispatch;
-
-import com.google.protobuf.ByteString;
-import emu.grasscutter.Grasscutter;
-import emu.grasscutter.Grasscutter.ServerRunMode;
-import emu.grasscutter.net.proto.QueryCurrRegionHttpRspOuterClass.QueryCurrRegionHttpRsp;
-import emu.grasscutter.net.proto.QueryRegionListHttpRspOuterClass.QueryRegionListHttpRsp;
-import emu.grasscutter.net.proto.RegionInfoOuterClass.RegionInfo;
-import emu.grasscutter.net.proto.RegionSimpleInfoOuterClass.RegionSimpleInfo;
-import emu.grasscutter.server.event.dispatch.QueryAllRegionsEvent;
-import emu.grasscutter.server.event.dispatch.QueryCurrentRegionEvent;
-import emu.grasscutter.server.http.Router;
-import emu.grasscutter.server.http.objects.QueryCurRegionRspJson;
-import emu.grasscutter.utils.Crypto;
-import emu.grasscutter.utils.Utils;
-import io.javalin.Javalin;
-import io.javalin.http.Context;
-import org.slf4j.Logger;
-
-import javax.crypto.Cipher;
-import java.io.ByteArrayOutputStream;
-import java.security.Signature;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.List;
-import java.util.Map;
-import java.util.concurrent.ConcurrentHashMap;
-import java.util.regex.Pattern;
-
-import static emu.grasscutter.config.Configuration.*;
-
-/**
- * Handles requests related to region queries.
- */
-public final class RegionHandler implements Router {
-    private static final Map<String, RegionData> regions = new ConcurrentHashMap<>();
-    private static String regionListResponse;
-    private static String regionListResponsecn;
-
-    public RegionHandler() {
-        try { // Read & initialize region data.
-            this.initialize();
-        } catch (Exception exception) {
-            Grasscutter.getLogger().error("Failed to initialize region data.", exception);
-        }
-    }
-
-    /**
-     * Handle query region list request.
-     *
-     * @param ctx The context object for handling the request.
-     * @route /query_region_list
-     */
-    private static void queryRegionList(Context ctx) {
-        // Get logger and query parameters.
-        Logger logger = Grasscutter.getLogger();
-        if (ctx.queryParamMap().containsKey("version") && ctx.queryParamMap().containsKey("platform")) {
-            String versionName = ctx.queryParam("version");
-            String versionCode = versionName.replaceAll("[/.0-9]*", "");
-            String platformName = ctx.queryParam("platform");
-
-            // Determine the region list to use based on the version and platform.
-            if ("CNRELiOS".equals(versionCode) || "CNRELWin".equals(versionCode)
-                || "CNRELAndroid".equals(versionCode)) {
-                // Use the CN region list.
-                QueryAllRegionsEvent event = new QueryAllRegionsEvent(regionListResponsecn);
-                event.call();
-                logger.debug("Connect to Chinese version");
-
-                // Respond with the event result.
-                ctx.result(event.getRegionList());
-            } else if ("OSRELiOS".equals(versionCode) || "OSRELWin".equals(versionCode)
-                || "OSRELAndroid".equals(versionCode)) {
-                // Use the OS region list.
-                QueryAllRegionsEvent event = new QueryAllRegionsEvent(regionListResponse);
-                event.call();
-                logger.debug("Connect to global version");
-
-                // Respond with the event result.
-                ctx.result(event.getRegionList());
-            } else {
-                /*
-                 * String regionListResponse = "CP///////////wE=";
-                 * QueryAllRegionsEvent event = new QueryAllRegionsEvent(regionListResponse);
-                 * event.call();
-                 * ctx.result(event.getRegionList());
-                 * return;
-                 */
-                // Use the default region list.
-                QueryAllRegionsEvent event = new QueryAllRegionsEvent(regionListResponse);
-                event.call();
-                logger.debug("Connect to global version");
-
-                // Respond with the event result.
-                ctx.result(event.getRegionList());
-            }
-        } else {
-            // Use the default region list.
-            QueryAllRegionsEvent event = new QueryAllRegionsEvent(regionListResponse);
-            event.call();
-            logger.debug("Connect to global version");
-
-            // Respond with the event result.
-            ctx.result(event.getRegionList());
-        }
-        // Log the request to the console.
-        Grasscutter.getLogger().info(String.format("[Dispatch] Client %s request: query_region_list", ctx.ip()));
-    }
-
-    /**
-     * @route /query_cur_region/{region}
-     */
-    private static void queryCurrentRegion(Context ctx) {
-        // Get region to query.
-        String regionName = ctx.pathParam("region");
-        String versionName = ctx.queryParam("version");
-        var region = regions.get(regionName);
-
-        // Get region data.
-        String regionData = "CAESGE5vdCBGb3VuZCB2ZXJzaW9uIGNvbmZpZw==";
-        if (ctx.queryParamMap().values().size() > 0) {
-            if (region != null)
-                regionData = region.getBase64();
-        }
-
-        String[] versionCode = versionName.replaceAll(Pattern.compile("[a-zA-Z]").pattern(), "").split("\\.");
-        int versionMajor = Integer.parseInt(versionCode[0]);
-        int versionMinor = Integer.parseInt(versionCode[1]);
-        int versionFix = Integer.parseInt(versionCode[2]);
-
-        if (versionMajor >= 3 || (versionMajor == 2 && versionMinor == 7 && versionFix >= 50) || (versionMajor == 2 && versionMinor == 8)) {
-            try {
-                QueryCurrentRegionEvent event = new QueryCurrentRegionEvent(regionData);
-                event.call();
-
-                if (ctx.queryParam("dispatchSeed") == null) {
-                    // More love for UA Patch players
-                    var rsp = new QueryCurRegionRspJson();
-
-                    rsp.content = event.getRegionInfo();
-                    rsp.sign = "TW9yZSBsb3ZlIGZvciBVQSBQYXRjaCBwbGF5ZXJz";
-
-                    ctx.json(rsp);
-                    return;
-                }
-
-                String key_id = ctx.queryParam("key_id");
-
-                if (key_id == null)
-                    throw new Exception("Key ID was not set");
-
-                Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");
-                cipher.init(Cipher.ENCRYPT_MODE, Crypto.EncryptionKeys.get(Integer.valueOf(key_id)));
-                var regionInfo = Utils.base64Decode(event.getRegionInfo());
-
-                //Encrypt regionInfo in chunks
-                ByteArrayOutputStream encryptedRegionInfoStream = new ByteArrayOutputStream();
-
-                //Thank you so much GH Copilot
-                int chunkSize = 256 - 11;
-                int regionInfoLength = regionInfo.length;
-                int numChunks = (int) Math.ceil(regionInfoLength / (double) chunkSize);
-
-                for (int i = 0; i < numChunks; i++) {
-                    byte[] chunk = Arrays.copyOfRange(regionInfo, i * chunkSize, Math.min((i + 1) * chunkSize, regionInfoLength));
-                    byte[] encryptedChunk = cipher.doFinal(chunk);
-                    encryptedRegionInfoStream.write(encryptedChunk);
-                }
-
-                Signature privateSignature = Signature.getInstance("SHA256withRSA");
-                privateSignature.initSign(Crypto.CUR_SIGNING_KEY);
-                privateSignature.update(regionInfo);
-
-                var rsp = new QueryCurRegionRspJson();
-
-                rsp.content = Utils.base64Encode(encryptedRegionInfoStream.toByteArray());
-                rsp.sign = Utils.base64Encode(privateSignature.sign());
-
-                ctx.json(rsp);
-            } catch (Exception e) {
-                Grasscutter.getLogger().error("An error occurred while handling query_cur_region.", e);
-            }
-        } else {
-            // Invoke event.
-            QueryCurrentRegionEvent event = new QueryCurrentRegionEvent(regionData);
-            event.call();
-            // Respond with event result.
-            ctx.result(event.getRegionInfo());
-        }
-        // Log to console.
-        Grasscutter.getLogger().info(String.format("Client %s request: query_cur_region/%s", ctx.ip(), regionName));
-    }
-
-    /**
-     * Gets the current region query.
-     *
-     * @return A {@link QueryCurrRegionHttpRsp} object.
-     */
-    public static QueryCurrRegionHttpRsp getCurrentRegion() {
-        return SERVER.runMode == ServerRunMode.HYBRID ? regions.get("os_usa").getRegionQuery() : null;
-    }
-
-    /**
-     * Configures region data according to configuration.
-     */
-    private void initialize() {
-        String dispatchDomain = "http" + (HTTP_ENCRYPTION.useInRouting ? "s" : "") + "://"
-            + lr(HTTP_INFO.accessAddress, HTTP_INFO.bindAddress) + ":"
-            + lr(HTTP_INFO.accessPort, HTTP_INFO.bindPort);
-
-        // Create regions.
-        List<RegionSimpleInfo> servers = new ArrayList<>();
-        List<String> usedNames = new ArrayList<>(); // List to check for potential naming conflicts.
-
-        var configuredRegions = new ArrayList<>(List.of(DISPATCH_INFO.regions));
-        if (SERVER.runMode != ServerRunMode.HYBRID && configuredRegions.size() == 0) {
-            Grasscutter.getLogger().error("[Dispatch] There are no game servers available. Exiting due to unplayable state.");
-            System.exit(1);
-        } else if (configuredRegions.size() == 0)
-            configuredRegions.add(new Region("os_usa", DISPATCH_INFO.defaultName,
-                lr(GAME_INFO.accessAddress, GAME_INFO.bindAddress),
-                lr(GAME_INFO.accessPort, GAME_INFO.bindPort)));
-
-        configuredRegions.forEach(region -> {
-            if (usedNames.contains(region.Name)) {
-                Grasscutter.getLogger().error("Region name already in use.");
-                return;
-            }
-
-            // Create a region identifier.
-            var identifier = RegionSimpleInfo.newBuilder()
-                .setName(region.Name).setTitle(region.Title).setType("DEV_PUBLIC")
-                .setDispatchUrl(dispatchDomain + "/query_cur_region/" + region.Name)
-                .build();
-            usedNames.add(region.Name);
-            servers.add(identifier);
-
-            // Create a region info object.
-            var regionInfo = RegionInfo.newBuilder()
-                .setGateserverIp(region.Ip).setGateserverPort(region.Port)
-                .setSecretKey(ByteString.copyFrom(Crypto.DISPATCH_SEED))
-                .build();
-            // Create an updated region query.
-            var updatedQuery = QueryCurrRegionHttpRsp.newBuilder().setRegionInfo(regionInfo).build();
-            regions.put(region.Name, new RegionData(updatedQuery, Utils.base64Encode(updatedQuery.toByteString().toByteArray())));
-        });
-
-        // Create a config object.
-        byte[] customConfig = "{\"sdkenv\":\"2\",\"checkdevice\":\"false\",\"loadPatch\":\"false\",\"showexception\":\"false\",\"regionConfig\":\"pm|fk|add\",\"downloadMode\":\"0\"}".getBytes();
-        Crypto.xor(customConfig, Crypto.DISPATCH_KEY); // XOR the config with the key.
-
-        // Create an updated region list.
-        QueryRegionListHttpRsp updatedRegionList = QueryRegionListHttpRsp.newBuilder()
-            .addAllRegionList(servers)
-            .setClientSecretKey(ByteString.copyFrom(Crypto.DISPATCH_SEED))
-            .setClientCustomConfigEncrypted(ByteString.copyFrom(customConfig))
-            .setEnableLoginPc(true).build();
-
-        // Set the region list response.
-        regionListResponse = Utils.base64Encode(updatedRegionList.toByteString().toByteArray());
-
-        // CN
-        // Create a config object.
-        byte[] customConfigcn = "{\"sdkenv\":\"0\",\"checkdevice\":\"true\",\"loadPatch\":\"false\",\"showexception\":\"false\",\"regionConfig\":\"pm|fk|add\",\"downloadMode\":\"0\"}".getBytes();
-        Crypto.xor(customConfigcn, Crypto.DISPATCH_KEY); // XOR the config with the key.
-
-        // Create an updated region list.
-        QueryRegionListHttpRsp updatedRegionListcn = QueryRegionListHttpRsp.newBuilder()
-            .addAllRegionList(servers)
-            .setClientSecretKey(ByteString.copyFrom(Crypto.DISPATCH_SEED))
-            .setClientCustomConfigEncrypted(ByteString.copyFrom(customConfigcn))
-            .setEnableLoginPc(true).build();
-
-        // Set the region list response.
-        regionListResponsecn = Utils.base64Encode(updatedRegionListcn.toByteString().toByteArray());
-    }
-
-    @Override
-    public void applyRoutes(Javalin javalin) {
-        javalin.get("/query_region_list", RegionHandler::queryRegionList);
-        javalin.get("/query_cur_region/{region}", RegionHandler::queryCurrentRegion);
-    }
-
-    /**
-     * Region data container.
-     */
-    public static class RegionData {
-        private final QueryCurrRegionHttpRsp regionQuery;
-        private final String base64;
-
-        public RegionData(QueryCurrRegionHttpRsp prq, String b64) {
-            this.regionQuery = prq;
-            this.base64 = b64;
-        }
-
-        public QueryCurrRegionHttpRsp getRegionQuery() {
-            return this.regionQuery;
-        }
-
-        public String getBase64() {
-            return this.base64;
-        }
-    }
-}
+package emu.grasscutter.server.http.dispatch;
+
+import static emu.grasscutter.config.Configuration.*;
+
+import com.google.protobuf.ByteString;
+import emu.grasscutter.Grasscutter;
+import emu.grasscutter.Grasscutter.ServerRunMode;
+import emu.grasscutter.net.proto.QueryCurrRegionHttpRspOuterClass.QueryCurrRegionHttpRsp;
+import emu.grasscutter.net.proto.QueryRegionListHttpRspOuterClass.QueryRegionListHttpRsp;
+import emu.grasscutter.net.proto.RegionInfoOuterClass.RegionInfo;
+import emu.grasscutter.net.proto.RegionSimpleInfoOuterClass.RegionSimpleInfo;
+import emu.grasscutter.server.event.dispatch.QueryAllRegionsEvent;
+import emu.grasscutter.server.event.dispatch.QueryCurrentRegionEvent;
+import emu.grasscutter.server.http.Router;
+import emu.grasscutter.server.http.objects.QueryCurRegionRspJson;
+import emu.grasscutter.utils.Crypto;
+import emu.grasscutter.utils.Utils;
+import io.javalin.Javalin;
+import io.javalin.http.Context;
+import java.io.ByteArrayOutputStream;
+import java.security.Signature;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.regex.Pattern;
+import javax.crypto.Cipher;
+import org.slf4j.Logger;
+
+/** Handles requests related to region queries. */
+public final class RegionHandler implements Router {
+    private static final Map<String, RegionData> regions = new ConcurrentHashMap<>();
+    private static String regionListResponse;
+    private static String regionListResponsecn;
+
+    public RegionHandler() {
+        try { // Read & initialize region data.
+            this.initialize();
+        } catch (Exception exception) {
+            Grasscutter.getLogger().error("Failed to initialize region data.", exception);
+        }
+    }
+
+    /**
+     * Handle query region list request.
+     *
+     * @param ctx The context object for handling the request.
+     * @route /query_region_list
+     */
+    private static void queryRegionList(Context ctx) {
+        // Get logger and query parameters.
+        Logger logger = Grasscutter.getLogger();
+        if (ctx.queryParamMap().containsKey("version") && ctx.queryParamMap().containsKey("platform")) {
+            String versionName = ctx.queryParam("version");
+            String versionCode = versionName.replaceAll("[/.0-9]*", "");
+            String platformName = ctx.queryParam("platform");
+
+            // Determine the region list to use based on the version and platform.
+            if ("CNRELiOS".equals(versionCode)
+                    || "CNRELWin".equals(versionCode)
+                    || "CNRELAndroid".equals(versionCode)) {
+                // Use the CN region list.
+                QueryAllRegionsEvent event = new QueryAllRegionsEvent(regionListResponsecn);
+                event.call();
+                logger.debug("Connect to Chinese version");
+
+                // Respond with the event result.
+                ctx.result(event.getRegionList());
+            } else if ("OSRELiOS".equals(versionCode)
+                    || "OSRELWin".equals(versionCode)
+                    || "OSRELAndroid".equals(versionCode)) {
+                // Use the OS region list.
+                QueryAllRegionsEvent event = new QueryAllRegionsEvent(regionListResponse);
+                event.call();
+                logger.debug("Connect to global version");
+
+                // Respond with the event result.
+                ctx.result(event.getRegionList());
+            } else {
+                /*
+                 * String regionListResponse = "CP///////////wE=";
+                 * QueryAllRegionsEvent event = new QueryAllRegionsEvent(regionListResponse);
+                 * event.call();
+                 * ctx.result(event.getRegionList());
+                 * return;
+                 */
+                // Use the default region list.
+                QueryAllRegionsEvent event = new QueryAllRegionsEvent(regionListResponse);
+                event.call();
+                logger.debug("Connect to global version");
+
+                // Respond with the event result.
+                ctx.result(event.getRegionList());
+            }
+        } else {
+            // Use the default region list.
+            QueryAllRegionsEvent event = new QueryAllRegionsEvent(regionListResponse);
+            event.call();
+            logger.debug("Connect to global version");
+
+            // Respond with the event result.
+            ctx.result(event.getRegionList());
+        }
+        // Log the request to the console.
+        Grasscutter.getLogger()
+                .info(String.format("[Dispatch] Client %s request: query_region_list", ctx.ip()));
+    }
+
+    /**
+     * @route /query_cur_region/{region}
+     */
+    private static void queryCurrentRegion(Context ctx) {
+        // Get region to query.
+        String regionName = ctx.pathParam("region");
+        String versionName = ctx.queryParam("version");
+        var region = regions.get(regionName);
+
+        // Get region data.
+        String regionData = "CAESGE5vdCBGb3VuZCB2ZXJzaW9uIGNvbmZpZw==";
+        if (ctx.queryParamMap().values().size() > 0) {
+            if (region != null) regionData = region.getBase64();
+        }
+
+        String[] versionCode =
+                versionName.replaceAll(Pattern.compile("[a-zA-Z]").pattern(), "").split("\\.");
+        int versionMajor = Integer.parseInt(versionCode[0]);
+        int versionMinor = Integer.parseInt(versionCode[1]);
+        int versionFix = Integer.parseInt(versionCode[2]);
+
+        if (versionMajor >= 3
+                || (versionMajor == 2 && versionMinor == 7 && versionFix >= 50)
+                || (versionMajor == 2 && versionMinor == 8)) {
+            try {
+                QueryCurrentRegionEvent event = new QueryCurrentRegionEvent(regionData);
+                event.call();
+
+                if (ctx.queryParam("dispatchSeed") == null) {
+                    // More love for UA Patch players
+                    var rsp = new QueryCurRegionRspJson();
+
+                    rsp.content = event.getRegionInfo();
+                    rsp.sign = "TW9yZSBsb3ZlIGZvciBVQSBQYXRjaCBwbGF5ZXJz";
+
+                    ctx.json(rsp);
+                    return;
+                }
+
+                String key_id = ctx.queryParam("key_id");
+
+                if (key_id == null) throw new Exception("Key ID was not set");
+
+                Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");
+                cipher.init(Cipher.ENCRYPT_MODE, Crypto.EncryptionKeys.get(Integer.valueOf(key_id)));
+                var regionInfo = Utils.base64Decode(event.getRegionInfo());
+
+                // Encrypt regionInfo in chunks
+                ByteArrayOutputStream encryptedRegionInfoStream = new ByteArrayOutputStream();
+
+                // Thank you so much GH Copilot
+                int chunkSize = 256 - 11;
+                int regionInfoLength = regionInfo.length;
+                int numChunks = (int) Math.ceil(regionInfoLength / (double) chunkSize);
+
+                for (int i = 0; i < numChunks; i++) {
+                    byte[] chunk =
+                            Arrays.copyOfRange(
+                                    regionInfo, i * chunkSize, Math.min((i + 1) * chunkSize, regionInfoLength));
+                    byte[] encryptedChunk = cipher.doFinal(chunk);
+                    encryptedRegionInfoStream.write(encryptedChunk);
+                }
+
+                Signature privateSignature = Signature.getInstance("SHA256withRSA");
+                privateSignature.initSign(Crypto.CUR_SIGNING_KEY);
+                privateSignature.update(regionInfo);
+
+                var rsp = new QueryCurRegionRspJson();
+
+                rsp.content = Utils.base64Encode(encryptedRegionInfoStream.toByteArray());
+                rsp.sign = Utils.base64Encode(privateSignature.sign());
+
+                ctx.json(rsp);
+            } catch (Exception e) {
+                Grasscutter.getLogger().error("An error occurred while handling query_cur_region.", e);
+            }
+        } else {
+            // Invoke event.
+            QueryCurrentRegionEvent event = new QueryCurrentRegionEvent(regionData);
+            event.call();
+            // Respond with event result.
+            ctx.result(event.getRegionInfo());
+        }
+        // Log to console.
+        Grasscutter.getLogger()
+                .info(String.format("Client %s request: query_cur_region/%s", ctx.ip(), regionName));
+    }
+
+    /**
+     * Gets the current region query.
+     *
+     * @return A {@link QueryCurrRegionHttpRsp} object.
+     */
+    public static QueryCurrRegionHttpRsp getCurrentRegion() {
+        return SERVER.runMode == ServerRunMode.HYBRID ? regions.get("os_usa").getRegionQuery() : null;
+    }
+
+    /** Configures region data according to configuration. */
+    private void initialize() {
+        String dispatchDomain =
+                "http"
+                        + (HTTP_ENCRYPTION.useInRouting ? "s" : "")
+                        + "://"
+                        + lr(HTTP_INFO.accessAddress, HTTP_INFO.bindAddress)
+                        + ":"
+                        + lr(HTTP_INFO.accessPort, HTTP_INFO.bindPort);
+
+        // Create regions.
+        List<RegionSimpleInfo> servers = new ArrayList<>();
+        List<String> usedNames = new ArrayList<>(); // List to check for potential naming conflicts.
+
+        var configuredRegions = new ArrayList<>(List.of(DISPATCH_INFO.regions));
+        if (SERVER.runMode != ServerRunMode.HYBRID && configuredRegions.size() == 0) {
+            Grasscutter.getLogger()
+                    .error(
+                            "[Dispatch] There are no game servers available. Exiting due to unplayable state.");
+            System.exit(1);
+        } else if (configuredRegions.size() == 0)
+            configuredRegions.add(
+                    new Region(
+                            "os_usa",
+                            DISPATCH_INFO.defaultName,
+                            lr(GAME_INFO.accessAddress, GAME_INFO.bindAddress),
+                            lr(GAME_INFO.accessPort, GAME_INFO.bindPort)));
+
+        configuredRegions.forEach(
+                region -> {
+                    if (usedNames.contains(region.Name)) {
+                        Grasscutter.getLogger().error("Region name already in use.");
+                        return;
+                    }
+
+                    // Create a region identifier.
+                    var identifier =
+                            RegionSimpleInfo.newBuilder()
+                                    .setName(region.Name)
+                                    .setTitle(region.Title)
+                                    .setType("DEV_PUBLIC")
+                                    .setDispatchUrl(dispatchDomain + "/query_cur_region/" + region.Name)
+                                    .build();
+                    usedNames.add(region.Name);
+                    servers.add(identifier);
+
+                    // Create a region info object.
+                    var regionInfo =
+                            RegionInfo.newBuilder()
+                                    .setGateserverIp(region.Ip)
+                                    .setGateserverPort(region.Port)
+                                    .setSecretKey(ByteString.copyFrom(Crypto.DISPATCH_SEED))
+                                    .build();
+                    // Create an updated region query.
+                    var updatedQuery = QueryCurrRegionHttpRsp.newBuilder().setRegionInfo(regionInfo).build();
+                    regions.put(
+                            region.Name,
+                            new RegionData(
+                                    updatedQuery, Utils.base64Encode(updatedQuery.toByteString().toByteArray())));
+                });
+
+        // Create a config object.
+        byte[] customConfig =
+                "{\"sdkenv\":\"2\",\"checkdevice\":\"false\",\"loadPatch\":\"false\",\"showexception\":\"false\",\"regionConfig\":\"pm|fk|add\",\"downloadMode\":\"0\"}"
+                        .getBytes();
+        Crypto.xor(customConfig, Crypto.DISPATCH_KEY); // XOR the config with the key.
+
+        // Create an updated region list.
+        QueryRegionListHttpRsp updatedRegionList =
+                QueryRegionListHttpRsp.newBuilder()
+                        .addAllRegionList(servers)
+                        .setClientSecretKey(ByteString.copyFrom(Crypto.DISPATCH_SEED))
+                        .setClientCustomConfigEncrypted(ByteString.copyFrom(customConfig))
+                        .setEnableLoginPc(true)
+                        .build();
+
+        // Set the region list response.
+        regionListResponse = Utils.base64Encode(updatedRegionList.toByteString().toByteArray());
+
+        // CN
+        // Create a config object.
+        byte[] customConfigcn =
+                "{\"sdkenv\":\"0\",\"checkdevice\":\"true\",\"loadPatch\":\"false\",\"showexception\":\"false\",\"regionConfig\":\"pm|fk|add\",\"downloadMode\":\"0\"}"
+                        .getBytes();
+        Crypto.xor(customConfigcn, Crypto.DISPATCH_KEY); // XOR the config with the key.
+
+        // Create an updated region list.
+        QueryRegionListHttpRsp updatedRegionListcn =
+                QueryRegionListHttpRsp.newBuilder()
+                        .addAllRegionList(servers)
+                        .setClientSecretKey(ByteString.copyFrom(Crypto.DISPATCH_SEED))
+                        .setClientCustomConfigEncrypted(ByteString.copyFrom(customConfigcn))
+                        .setEnableLoginPc(true)
+                        .build();
+
+        // Set the region list response.
+        regionListResponsecn = Utils.base64Encode(updatedRegionListcn.toByteString().toByteArray());
+    }
+
+    @Override
+    public void applyRoutes(Javalin javalin) {
+        javalin.get("/query_region_list", RegionHandler::queryRegionList);
+        javalin.get("/query_cur_region/{region}", RegionHandler::queryCurrentRegion);
+    }
+
+    /** Region data container. */
+    public static class RegionData {
+        private final QueryCurrRegionHttpRsp regionQuery;
+        private final String base64;
+
+        public RegionData(QueryCurrRegionHttpRsp prq, String b64) {
+            this.regionQuery = prq;
+            this.base64 = b64;
+        }
+
+        public QueryCurrRegionHttpRsp getRegionQuery() {
+            return this.regionQuery;
+        }
+
+        public String getBase64() {
+            return this.base64;
+        }
+    }
+}