package emu.grasscutter.server.dispatch; import com.google.gson.Gson; import com.google.gson.GsonBuilder; import com.google.protobuf.ByteString; import com.sun.net.httpserver.HttpExchange; import com.sun.net.httpserver.HttpServer; import com.sun.net.httpserver.HttpsConfigurator; import com.sun.net.httpserver.HttpsServer; import emu.grasscutter.Config; import emu.grasscutter.Grasscutter; import emu.grasscutter.database.DatabaseHelper; import emu.grasscutter.game.Account; 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.dispatch.json.*; import emu.grasscutter.server.dispatch.json.ComboTokenReqJson.LoginTokenData; import emu.grasscutter.utils.FileUtils; import emu.grasscutter.utils.Utils; import javax.net.ssl.KeyManagerFactory; import javax.net.ssl.SSLContext; import java.io.*; import java.net.BindException; import java.net.InetSocketAddress; import java.net.URI; import java.net.URLDecoder; import java.security.KeyStore; import java.util.*; public final class DispatchServer { public static String query_region_list = ""; public static String query_cur_region = ""; private final InetSocketAddress address; private final Gson gson; private final String defaultServerName = "os_usa"; public String regionListBase64; public HashMap regions; public DispatchServer() { this.regions = new HashMap(); this.address = new InetSocketAddress(Grasscutter.getConfig().getDispatchOptions().Ip, Grasscutter.getConfig().getDispatchOptions().Port); this.gson = new GsonBuilder().create(); this.loadQueries(); this.initRegion(); } public InetSocketAddress getAddress() { return address; } public Gson getGsonFactory() { return gson; } public QueryCurrRegionHttpRsp getCurrRegion() { // Needs to be fixed by having the game servers connect to the dispatch server. if (Grasscutter.getConfig().RunMode.equalsIgnoreCase("HYBRID")) { return regions.get(defaultServerName).parsedRegionQuery; } Grasscutter.getLogger().warn("[Dispatch] Unsupported run mode for getCurrRegion()"); return null; } public void loadQueries() { File file; file = new File(Grasscutter.getConfig().DATA_FOLDER + "query_region_list.txt"); if (file.exists()) { query_region_list = new String(FileUtils.read(file)); } else { Grasscutter.getLogger().warn("[Dispatch] query_region_list not found! Using default region list."); } file = new File(Grasscutter.getConfig().DATA_FOLDER + "query_cur_region.txt"); if (file.exists()) { query_cur_region = new String(FileUtils.read(file)); } else { Grasscutter.getLogger().warn("[Dispatch] query_cur_region not found! Using default current region."); } } private void initRegion() { try { byte[] decoded = Base64.getDecoder().decode(query_region_list); QueryRegionListHttpRsp rl = QueryRegionListHttpRsp.parseFrom(decoded); byte[] decoded2 = Base64.getDecoder().decode(query_cur_region); QueryCurrRegionHttpRsp regionQuery = QueryCurrRegionHttpRsp.parseFrom(decoded2); List servers = new ArrayList(); List usedNames = new ArrayList(); // List to check for potential naming conflicts if (Grasscutter.getConfig().RunMode.equalsIgnoreCase("HYBRID")) { // Automatically add the game server if in // hybrid mode RegionSimpleInfo server = RegionSimpleInfo.newBuilder() .setName("os_usa") .setTitle(Grasscutter.getConfig().getGameServerOptions().Name) .setType("DEV_PUBLIC") .setDispatchUrl( "http" + (Grasscutter.getConfig().getDispatchOptions().FrontHTTPS ? "s" : "") + "://" + (Grasscutter.getConfig().getDispatchOptions().PublicIp.isEmpty() ? Grasscutter.getConfig().getDispatchOptions().Ip : Grasscutter.getConfig().getDispatchOptions().PublicIp) + ":" + (Grasscutter.getConfig().getDispatchOptions().PublicPort != 0 ? Grasscutter.getConfig().getDispatchOptions().PublicPort : Grasscutter.getConfig().getDispatchOptions().Port) + "/query_cur_region_" + defaultServerName) .build(); usedNames.add(defaultServerName); servers.add(server); RegionInfo serverRegion = regionQuery.getRegionInfo().toBuilder() .setIp((Grasscutter.getConfig().getGameServerOptions().PublicIp.isEmpty() ? Grasscutter.getConfig().getGameServerOptions().Ip : Grasscutter.getConfig().getGameServerOptions().PublicIp)) .setPort(Grasscutter.getConfig().getGameServerOptions().PublicPort != 0 ? Grasscutter.getConfig().getGameServerOptions().PublicPort : Grasscutter.getConfig().getGameServerOptions().Port) .setSecretKey(ByteString .copyFrom(FileUtils.read(Grasscutter.getConfig().KEY_FOLDER + "dispatchSeed.bin"))) .build(); QueryCurrRegionHttpRsp parsedRegionQuery = regionQuery.toBuilder().setRegionInfo(serverRegion).build(); regions.put(defaultServerName, new RegionData(parsedRegionQuery, Base64.getEncoder().encodeToString(parsedRegionQuery.toByteString().toByteArray()))); } else { if (Grasscutter.getConfig().getDispatchOptions().getGameServers().length == 0) { Grasscutter.getLogger() .error("[Dispatch] There are no game servers available. Exiting due to unplayable state."); System.exit(1); } } for (Config.DispatchServerOptions.RegionInfo regionInfo : Grasscutter.getConfig().getDispatchOptions() .getGameServers()) { if (usedNames.contains(regionInfo.Name)) { Grasscutter.getLogger().error("Region name already in use."); continue; } RegionSimpleInfo server = RegionSimpleInfo.newBuilder() .setName(regionInfo.Name) .setTitle(regionInfo.Title) .setType("DEV_PUBLIC") .setDispatchUrl( "http" + (Grasscutter.getConfig().getDispatchOptions().FrontHTTPS ? "s" : "") + "://" + (Grasscutter.getConfig().getDispatchOptions().PublicIp.isEmpty() ? Grasscutter.getConfig().getDispatchOptions().Ip : Grasscutter.getConfig().getDispatchOptions().PublicIp) + ":" + getAddress().getPort() + "/query_cur_region_" + regionInfo.Name) .build(); usedNames.add(regionInfo.Name); servers.add(server); RegionInfo serverRegion = regionQuery.getRegionInfo().toBuilder() .setIp(regionInfo.Ip) .setPort(regionInfo.Port) .setSecretKey(ByteString .copyFrom(FileUtils.read(Grasscutter.getConfig().KEY_FOLDER + "dispatchSeed.bin"))) .build(); QueryCurrRegionHttpRsp parsedRegionQuery = regionQuery.toBuilder().setRegionInfo(serverRegion).build(); regions.put(regionInfo.Name, new RegionData(parsedRegionQuery, Base64.getEncoder().encodeToString(parsedRegionQuery.toByteString().toByteArray()))); } QueryRegionListHttpRsp regionList = QueryRegionListHttpRsp.newBuilder() .addAllServers(servers) .setClientSecretKey(rl.getClientSecretKey()) .setClientCustomConfigEncrypted(rl.getClientCustomConfigEncrypted()) .setEnableLoginPc(true) .build(); this.regionListBase64 = Base64.getEncoder().encodeToString(regionList.toByteString().toByteArray()); } catch (Exception e) { Grasscutter.getLogger().error("[Dispatch] Error while initializing region info!", e); } } private HttpServer safelyCreateServer(InetSocketAddress address) { try { return HttpServer.create(address, 0); } catch (BindException ignored) { Grasscutter.getLogger().error("Unable to bind to port: " + getAddress().getPort() + " (HTTP)"); } catch (Exception exception) { Grasscutter.getLogger().error("Unable to start HTTP server.", exception); } return null; } public void start() throws Exception { HttpServer server; if (Grasscutter.getConfig().getDispatchOptions().UseSSL) { try (FileInputStream fis = new FileInputStream(Grasscutter.getConfig().getDispatchOptions().KeystorePath)) { char[] keystorePassword = Grasscutter.getConfig().getDispatchOptions().KeystorePassword.toCharArray(); KeyManagerFactory _kmf; try { KeyStore ks = KeyStore.getInstance("PKCS12"); ks.load(fis, keystorePassword); KeyManagerFactory kmf = KeyManagerFactory.getInstance("SunX509"); _kmf = kmf; kmf.init(ks, keystorePassword); } catch (Exception originalEx) { try { // try to initialize kmf with the default password char[] defaultPassword = "123456".toCharArray(); Grasscutter.getLogger() .warn("[Dispatch] Unable to load keystore. Trying default keystore password..."); KeyStore ks = KeyStore.getInstance("PKCS12"); ks.load(fis, defaultPassword); KeyManagerFactory kmf = KeyManagerFactory.getInstance("SunX509"); kmf.init(ks, defaultPassword); _kmf = kmf; Grasscutter.getLogger().warn( "[Dispatch] The default keystore password was loaded successfully. Please consider setting the password in config.json."); } catch (Exception ignored) { Grasscutter.getLogger().warn("[Dispatch] Error while loading keystore!"); // don't care about the exception for the "123456" default password attempt originalEx.printStackTrace(); throw originalEx; } } SSLContext sslContext = SSLContext.getInstance("TLS"); sslContext.init(_kmf.getKeyManagers(), null, null); HttpsServer httpsServer = HttpsServer.create(getAddress(), 0); httpsServer.setHttpsConfigurator(new HttpsConfigurator(sslContext)); server = httpsServer; } catch (BindException ignored) { Grasscutter.getLogger().error("Unable to bind to port: " + getAddress().getPort() + " (HTTPS)"); server = this.safelyCreateServer(this.getAddress()); } catch (Exception e) { Grasscutter.getLogger().warn("[Dispatch] No SSL cert found! Falling back to HTTP server."); Grasscutter.getConfig().getDispatchOptions().UseSSL = false; server = this.safelyCreateServer(this.getAddress()); } } else { server = this.safelyCreateServer(this.getAddress()); } if (server == null) throw new NullPointerException("An HTTP server was not created."); server.createContext("/", t -> responseHTML(t, "Hello")); // Dispatch server.createContext("/query_region_list", t -> { // Log Grasscutter.getLogger() .info(String.format("[Dispatch] Client %s request: query_region_list", t.getRemoteAddress())); responseHTML(t, regionListBase64); }); for (String regionName : regions.keySet()) { server.createContext("/query_cur_region_" + regionName, t -> { String regionCurrentBase64 = regions.get(regionName).Base64; // Log Grasscutter.getLogger().info( String.format("Client %s request: query_cur_region_%s", t.getRemoteAddress(), regionName)); // Create a response form the request query parameters URI uri = t.getRequestURI(); String response = "CAESGE5vdCBGb3VuZCB2ZXJzaW9uIGNvbmZpZw=="; if (uri.getQuery() != null && uri.getQuery().length() > 0) { response = regionCurrentBase64; } responseHTML(t, response); }); } // Login via account server.createContext("/hk4e_global/mdk/shield/api/login", t -> { // Get post data LoginAccountRequestJson requestData = null; try { String body = Utils.toString(t.getRequestBody()); requestData = getGsonFactory().fromJson(body, LoginAccountRequestJson.class); } catch (Exception ignored) { } // Create response json if (requestData == null) { return; } LoginResultJson responseData = new LoginResultJson(); Grasscutter.getLogger() .info(String.format("[Dispatch] Client %s is trying to log in", t.getRemoteAddress())); // Login Account account = DatabaseHelper.getAccountByName(requestData.account); // Check if account exists, else create a new one. if (account == null) { // Account doesnt exist, so we can either auto create it if the config value is // set if (Grasscutter.getConfig().getDispatchOptions().AutomaticallyCreateAccounts) { // This account has been created AUTOMATICALLY. There will be no permissions // added. account = DatabaseHelper.createAccountWithId(requestData.account, 0); if (account != null) { responseData.message = "OK"; responseData.data.account.uid = account.getId(); responseData.data.account.token = account.generateSessionKey(); responseData.data.account.email = account.getEmail(); Grasscutter.getLogger() .info(String.format("[Dispatch] Client %s failed to log in: Account %s created", t.getRemoteAddress(), responseData.data.account.uid)); } else { responseData.retcode = -201; responseData.message = "Username not found, create failed."; Grasscutter.getLogger().info(String.format( "[Dispatch] Client %s failed to log in: Account create failed", t.getRemoteAddress())); } } else { responseData.retcode = -201; responseData.message = "Username not found."; Grasscutter.getLogger().info(String .format("[Dispatch] Client %s failed to log in: Account no found", t.getRemoteAddress())); } } else { // Account was found, log the player in responseData.message = "OK"; responseData.data.account.uid = account.getId(); responseData.data.account.token = account.generateSessionKey(); responseData.data.account.email = account.getEmail(); Grasscutter.getLogger().info(String.format("[Dispatch] Client %s logged in as %s", t.getRemoteAddress(), responseData.data.account.uid)); } responseJSON(t, responseData); }); // Login via token server.createContext("/hk4e_global/mdk/shield/api/verify", t -> { // Get post data LoginTokenRequestJson requestData = null; try { String body = Utils.toString(t.getRequestBody()); requestData = getGsonFactory().fromJson(body, LoginTokenRequestJson.class); } catch (Exception ignored) { } // Create response json if (requestData == null) { return; } LoginResultJson responseData = new LoginResultJson(); Grasscutter.getLogger() .info(String.format("[Dispatch] Client %s is trying to log in via token", t.getRemoteAddress())); // Login Account account = DatabaseHelper.getAccountById(requestData.uid); // Test if (account == null || !account.getSessionKey().equals(requestData.token)) { responseData.retcode = -111; responseData.message = "Game account cache information error"; Grasscutter.getLogger() .info(String.format("[Dispatch] Client %s failed to log in via token", t.getRemoteAddress())); } else { responseData.message = "OK"; responseData.data.account.uid = requestData.uid; responseData.data.account.token = requestData.token; responseData.data.account.email = account.getEmail(); Grasscutter.getLogger().info(String.format("[Dispatch] Client %s logged in via token as %s", t.getRemoteAddress(), responseData.data.account.uid)); } responseJSON(t, responseData); }); // Exchange for combo token server.createContext("/hk4e_global/combo/granter/login/v2/login", t -> { // Get post data ComboTokenReqJson requestData = null; try { String body = Utils.toString(t.getRequestBody()); requestData = getGsonFactory().fromJson(body, ComboTokenReqJson.class); } catch (Exception ignored) { } // Create response json if (requestData == null || requestData.data == null) { return; } LoginTokenData loginData = getGsonFactory().fromJson(requestData.data, LoginTokenData.class); // Get login // data ComboTokenResJson responseData = new ComboTokenResJson(); // Login Account account = DatabaseHelper.getAccountById(loginData.uid); // Test if (account == null || !account.getSessionKey().equals(loginData.token)) { responseData.retcode = -201; responseData.message = "Wrong session key."; Grasscutter.getLogger().info( String.format("[Dispatch] Client %s failed to exchange combo token", t.getRemoteAddress())); } else { responseData.message = "OK"; responseData.data.open_id = loginData.uid; responseData.data.combo_id = "157795300"; responseData.data.combo_token = account.generateLoginToken(); Grasscutter.getLogger().info( String.format("[Dispatch] Client %s succeed to exchange combo token", t.getRemoteAddress())); } responseJSON(t, responseData); }); // Agreement and Protocol server.createContext( // hk4e-sdk-os.hoyoverse.com "/hk4e_global/mdk/agreement/api/getAgreementInfos", new DispatchHttpJsonHandler( "{\"retcode\":0,\"message\":\"OK\",\"data\":{\"marketing_agreements\":[]}}")); server.createContext( // hk4e-sdk-os.hoyoverse.com "/hk4e_global/combo/granter/api/compareProtocolVersion", new DispatchHttpJsonHandler( "{\"retcode\":0,\"message\":\"OK\",\"data\":{\"modified\":true,\"protocol\":{\"id\":0,\"app_id\":4,\"language\":\"en\",\"user_proto\":\"\",\"priv_proto\":\"\",\"major\":7,\"minimum\":0,\"create_time\":\"0\",\"teenager_proto\":\"\",\"third_proto\":\"\"}}}")); // Game data server.createContext( // hk4e-api-os.hoyoverse.com "/common/hk4e_global/announcement/api/getAlertPic", new DispatchHttpJsonHandler("{\"retcode\":0,\"message\":\"OK\",\"data\":{\"total\":0,\"list\":[]}}")); server.createContext( // hk4e-api-os.hoyoverse.com "/common/hk4e_global/announcement/api/getAlertAnn", new DispatchHttpJsonHandler( "{\"retcode\":0,\"message\":\"OK\",\"data\":{\"alert\":false,\"alert_id\":0,\"remind\":true}}")); server.createContext( // hk4e-api-os.hoyoverse.com "/common/hk4e_global/announcement/api/getAnnList", new DispatchHttpJsonHandler( "{\"retcode\":0,\"message\":\"OK\",\"data\":{\"list\":[],\"total\":0,\"type_list\":[],\"alert\":false,\"alert_id\":0,\"timezone\":0,\"t\":\"" + System.currentTimeMillis() + "\"}}")); server.createContext( // hk4e-api-os-static.hoyoverse.com "/common/hk4e_global/announcement/api/getAnnContent", new DispatchHttpJsonHandler("{\"retcode\":0,\"message\":\"OK\",\"data\":{\"list\":[],\"total\":0}}")); server.createContext( // hk4e-sdk-os.hoyoverse.com "/hk4e_global/mdk/shopwindow/shopwindow/listPriceTier", new DispatchHttpJsonHandler( "{\"retcode\":0,\"message\":\"OK\",\"data\":{\"suggest_currency\":\"USD\",\"tiers\":[]}}")); // Captcha server.createContext( // api-account-os.hoyoverse.com "/account/risky/api/check", new DispatchHttpJsonHandler( "{\"retcode\":0,\"message\":\"OK\",\"data\":{\"id\":\"c8820f246a5241ab9973f71df3ddd791\",\"action\":\"\",\"geetest\":{\"challenge\":\"\",\"gt\":\"\",\"new_captcha\":0,\"success\":1}}}")); // Config server.createContext( // sdk-os-static.hoyoverse.com "/combo/box/api/config/sdk/combo", new DispatchHttpJsonHandler( "{\"retcode\":0,\"message\":\"OK\",\"data\":{\"vals\":{\"disable_email_bind_skip\":\"false\",\"email_bind_remind_interval\":\"7\",\"email_bind_remind\":\"true\"}}}")); server.createContext( // hk4e-sdk-os-static.hoyoverse.com "/hk4e_global/combo/granter/api/getConfig", new DispatchHttpJsonHandler( "{\"retcode\":0,\"message\":\"OK\",\"data\":{\"protocol\":true,\"qr_enabled\":false,\"log_level\":\"INFO\",\"announce_url\":\"https://webstatic-sea.hoyoverse.com/hk4e/announcement/index.html?sdk_presentation_style=fullscreen\\u0026sdk_screen_transparent=true\\u0026game_biz=hk4e_global\\u0026auth_appid=announcement\\u0026game=hk4e#/\",\"push_alias_type\":2,\"disable_ysdk_guard\":false,\"enable_announce_pic_popup\":true}}")); server.createContext( // hk4e-sdk-os-static.hoyoverse.com "/hk4e_global/mdk/shield/api/loadConfig", new DispatchHttpJsonHandler( "{\"retcode\":0,\"message\":\"OK\",\"data\":{\"id\":6,\"game_key\":\"hk4e_global\",\"client\":\"PC\",\"identity\":\"I_IDENTITY\",\"guest\":false,\"ignore_versions\":\"\",\"scene\":\"S_NORMAL\",\"name\":\"原神海外\",\"disable_regist\":false,\"enable_email_captcha\":false,\"thirdparty\":[\"fb\",\"tw\"],\"disable_mmt\":false,\"server_guest\":false,\"thirdparty_ignore\":{\"tw\":\"\",\"fb\":\"\"},\"enable_ps_bind_account\":false,\"thirdparty_login_configs\":{\"tw\":{\"token_type\":\"TK_GAME_TOKEN\",\"game_token_expires_in\":604800},\"fb\":{\"token_type\":\"TK_GAME_TOKEN\",\"game_token_expires_in\":604800}}}}")); // Test api? server.createContext( // abtest-api-data-sg.hoyoverse.com "/data_abtest_api/config/experiment/list", new DispatchHttpJsonHandler( "{\"retcode\":0,\"success\":true,\"message\":\"\",\"data\":[{\"code\":1000,\"type\":2,\"config_id\":\"14\",\"period_id\":\"6036_99\",\"version\":\"1\",\"configs\":{\"cardType\":\"old\"}}]}")); // Log Server server.createContext( // log-upload-os.mihoyo.com "/log/sdk/upload", new DispatchHttpJsonHandler("{\"code\":0}")); server.createContext( // log-upload-os.mihoyo.com "/sdk/upload", new DispatchHttpJsonHandler("{\"code\":0}")); server.createContext( // /perf/config/verify?device_id=xxx&platform=x&name=xxx "/perf/config/verify", new DispatchHttpJsonHandler("{\"code\":0}")); // Logging servers server.createContext( // overseauspider.yuanshen.com "/log", new DispatchHttpJsonHandler("{\"code\":0}")); server.createContext( // log-upload-os.mihoyo.com "/crash/dataUpload", new DispatchHttpJsonHandler("{\"code\":0}")); server.createContext("/gacha", t -> responseHTML(t, "Gacha")); // Start server server.start(); Grasscutter.getLogger().info("[Dispatch] Dispatch server started on port " + getAddress().getPort()); } private void responseJSON(HttpExchange t, Object data) throws IOException { // Create a response String response = getGsonFactory().toJson(data); // Set the response header status and length t.getResponseHeaders().put("Content-Type", Collections.singletonList("application/json")); t.sendResponseHeaders(200, response.getBytes().length); // Write the response string OutputStream os = t.getResponseBody(); os.write(response.getBytes()); os.close(); } private void responseHTML(HttpExchange t, String response) throws IOException { // Set the response header status and length t.getResponseHeaders().put("Content-Type", Collections.singletonList("text/html; charset=UTF-8")); t.sendResponseHeaders(200, response.getBytes().length); // Write the response string OutputStream os = t.getResponseBody(); os.write(response.getBytes()); os.close(); } private Map parseQueryString(String qs) { Map result = new HashMap<>(); if (qs == null) { return result; } int last = 0, next, l = qs.length(); while (last < l) { next = qs.indexOf('&', last); if (next == -1) { next = l; } if (next > last) { int eqPos = qs.indexOf('=', last); try { if (eqPos < 0 || eqPos > next) { result.put(URLDecoder.decode(qs.substring(last, next), "utf-8"), ""); } else { result.put(URLDecoder.decode(qs.substring(last, eqPos), "utf-8"), URLDecoder.decode(qs.substring(eqPos + 1, next), "utf-8")); } } catch (UnsupportedEncodingException e) { throw new RuntimeException(e); // will never happen, utf-8 support is mandatory for java } } last = next + 1; } return result; } public static class RegionData { QueryCurrRegionHttpRsp parsedRegionQuery; String Base64; public RegionData(QueryCurrRegionHttpRsp prq, String b64) { this.parsedRegionQuery = prq; this.Base64 = b64; } } }