EZPPLauncher/electron/osuUtil.js

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const fs = require("fs");
const path = require("path");
const crypto = require("crypto");
const EventEmitter = require("events");
const { default: axios } = require("axios");
const { runFile } = require("./executeUtil.js");
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const checkUpdateURL =
"https://osu.ppy.sh/web/check-updates.php?action=check&stream=";
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const ignoredOsuEntities = [
"osu!auth.dll",
];
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const gamemodes = {
0: "osu!",
1: "taiko",
2: "catch",
3: "mania",
4: "osu!(rx)",
5: "taiko(rx)",
6: "catch(rx)",
8: "osu!(ap)"
}
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const osuEntities = [
"avcodec-51.dll",
"avformat-52.dll",
"avutil-49.dll",
"bass.dll",
"bass_fx.dll",
"collection.db",
"d3dcompiler_47.dll",
"libEGL.dll",
"libGLESv2.dll",
"Microsoft.Ink.dll",
"OpenTK.dll",
"osu!.cfg",
"osu!.db",
"osu!.exe",
"osu!auth.dll",
"osu!gameplay.dll",
"osu!seasonal.dll",
"osu!ui.dll",
"presence.db",
"pthreadGC2.dll",
"scores.db",
];
const ezppLauncherUpdateList = "https://ez-pp.farm/ezpplauncher"
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async function isValidOsuFolder(path) {
const allFiles = await fs.promises.readdir(path);
let matches = 0;
for (const file of allFiles) {
if (osuEntities.includes(file)) matches = matches + 1;
}
return (Math.round((matches / osuEntities.length) * 100) >= 60);
}
function getGlobalConfig(osuPath) {
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const configFileInfo = {
name: "",
path: "",
get: async (key) => {
if (!configFileInfo.path) {
return "";
}
const fileStream = await fs.promises.readFile(
configFileInfo.path,
"utf-8",
);
const lines = fileStream.split(/\r?\n/);
for (const line of lines) {
if (line.includes(" = ")) {
const argsPair = line.split(" = ", 2);
const keyname = argsPair[0];
const value = argsPair[1];
if (keyname == key) {
return value;
}
}
}
},
};
const globalOsuConfig = path.join(osuPath, "osu!.cfg");
if (fs.existsSync(globalOsuConfig)) {
configFileInfo.name = "osu!.cfg";
configFileInfo.path = globalOsuConfig;
}
return configFileInfo;
}
function getUserConfig(osuPath) {
const configFileInfo = {
name: "",
path: "",
set: async (key, newValue) => {
if (!configFileInfo.path) {
return "";
}
const fileContents = [];
const fileStream = await fs.promises.readFile(
configFileInfo.path,
"utf-8",
);
const lines = fileStream.split(/\r?\n/);
for (const line of lines) {
if (line.includes(" = ")) {
const argsPair = line.split(" = ", 2);
const keyname = argsPair[0];
if (keyname == key) {
fileContents.push(`${key} = ${newValue}`);
} else {
fileContents.push(line);
}
} else {
fileContents.push(line);
}
}
await fs.promises.writeFile(configFileInfo.path, fileContents.join("\n"));
return true;
},
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get: async (key) => {
if (!configFileInfo.path) {
return "";
}
const fileStream = await fs.promises.readFile(
configFileInfo.path,
"utf-8",
);
const lines = fileStream.split(/\r?\n/);
for (const line of lines) {
if (line.includes(" = ")) {
const argsPair = line.split(" = ", 2);
const keyname = argsPair[0];
const value = argsPair[1];
if (keyname == key) {
return value;
}
}
}
},
};
const userOsuConfig = path.join(
osuPath,
`osu!.${process.env["USERNAME"]}.cfg`,
);
if (fs.existsSync(userOsuConfig)) {
configFileInfo.name = `osu!.${process.env["USERNAME"]}.cfg`;
configFileInfo.path = userOsuConfig;
}
return configFileInfo;
}
async function getUpdateFiles(releaseStream) {
const releaseData = await fetch(checkUpdateURL + releaseStream);
return releaseData.ok ? await releaseData.json() : undefined;
}
async function getFilesThatNeedUpdate(osuPath, releaseStreamFiles) {
const updateFiles = [];
for (const updatePatch of releaseStreamFiles) {
const fileName = updatePatch.filename;
const fileHash = updatePatch.file_hash;
const fileOnDisk = path.join(osuPath, fileName);
if (fs.existsSync(fileOnDisk)) {
if (ignoredOsuEntities.includes(fileName)) continue;
const fileHashOnDisk = crypto.createHash("md5").update(
fs.readFileSync(fileOnDisk),
).digest("hex");
if (
fileHashOnDisk.trim().toLowerCase() != fileHash.trim().toLowerCase()
) {
updateFiles.push(updatePatch);
}
} else updateFiles.push(updatePatch);
}
return updateFiles;
}
function downloadUpdateFiles(osuPath, updateFiles) {
const eventEmitter = new EventEmitter();
const startDownload = async () => {
for (const updatePatch of updateFiles) {
const fileName = updatePatch.filename;
const fileSize = updatePatch.filesize;
const fileURL = updatePatch.url_full;
const axiosDownloadWithProgress = await axios.get(fileURL, {
responseType: "stream",
onDownloadProgress: (progressEvent) => {
const { loaded, total } = progressEvent;
eventEmitter.emit("data", {
fileName,
loaded,
total,
progress: Math.floor((loaded / total) * 100),
});
},
});
axiosDownloadWithProgress.data.on("end", () => {
eventEmitter.emit("data", {
fileName,
loaded: fileSize,
total: fileSize,
progress: 100,
});
});
try {
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if (fs.existsSync(path.join(osuPath, fileName))) {
await fs.promises.rm(path.join(osuPath, fileName), {
force: true,
});
}
await fs.promises.writeFile(
path.join(osuPath, fileName),
axiosDownloadWithProgress.data,
);
} catch (err) {
console.log(err);
eventEmitter.emit("error", {
fileName,
});
}
}
// wait until all files are downloaded
return true;
};
return {
eventEmitter,
startDownload,
};
}
function runOsuUpdater(osuPath, onExit) {
const osuExecuteable = path.join(osuPath, "osu!.exe");
runFile(osuPath, osuExecuteable, ["-repair"], onExit);
}
function runOsuWithDevServer(osuPath, serverDomain, onExit) {
const osuExecuteable = path.join(osuPath, "osu!.exe");
runFile(osuPath, osuExecuteable, ["-devserver", serverDomain], onExit);
}
async function getEZPPLauncherUpdateFiles(osuPath) {
const filesToDownload = [];
const updateFilesRequest = await fetch(ezppLauncherUpdateList, { method: "PATCH" });
const updateFiles = await updateFilesRequest.json();
for (const updateFile of updateFiles) {
const filePath = path.join(osuPath, ...updateFile.folder.split("/"), updateFile.name);
if (fs.existsSync(filePath)) {
const fileHash = updateFile.md5.toLowerCase();
const localFileHash = crypto.createHash("md5").update(
fs.readFileSync(filePath),
).digest("hex").toLowerCase();
if (fileHash !== localFileHash) {
filesToDownload.push(updateFile);
}
} else {
filesToDownload.push(updateFile);
}
}
return filesToDownload;
}
async function downloadEZPPLauncherUpdateFiles(osuPath, updateFiles) {
const eventEmitter = new EventEmitter();
const startDownload = async () => {
for (const updateFile of updateFiles) {
const filePath = path.join(osuPath, ...updateFile.folder.split("/"), updateFile.name);
const folder = path.dirname(filePath);
if (!fs.existsSync(folder)) await fs.promises.mkdir(folder, { recursive: true });
const axiosDownloadWithProgress = await axios.get(updateFile.url, {
responseType: "stream",
onDownloadProgress: (progressEvent) => {
const { loaded, total } = progressEvent;
eventEmitter.emit("data", {
fileName: path.basename(filePath),
loaded,
total,
progress: Math.floor((loaded / total) * 100),
});
},
});
try {
if (fs.existsSync(filePath)) {
await fs.promises.rm(filePath, {
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force: true,
});
}
await fs.promises.writeFile(
filePath,
axiosDownloadWithProgress.data,
);
} catch (err) {
console.log(err);
eventEmitter.emit("error", {
fileName: path.basename(filePath),
});
}
}
}
return {
eventEmitter,
startDownload,
};
}
async function replaceUIFiles(osuPath, revert) {
if (!revert) {
const ezppUIFile = path.join(osuPath, "EZPPLauncher", "ezpp!ui.dll");
const oldOsuUIFile = path.join(osuPath, "osu!ui.dll");
const ezppGameplayFile = path.join(osuPath, "EZPPLauncher", "ezpp!gameplay.dll");
const oldOsuGameplayFile = path.join(osuPath, "osu!gameplay.dll");
await fs.promises.rename(
oldOsuUIFile,
path.join(osuPath, "osu!ui.dll.bak"),
);
await fs.promises.rename(ezppUIFile, oldOsuUIFile);
await fs.promises.rename(
oldOsuGameplayFile,
path.join(osuPath, "osu!gameplay.dll.bak"),
);
await fs.promises.rename(ezppGameplayFile, oldOsuGameplayFile);
} else {
const oldOsuUIFile = path.join(osuPath, "osu!ui.dll");
const ezppUIFile = path.join(osuPath, "EZPPLauncher", "ezpp!ui.dll");
const oldOsuGameplayFile = path.join(osuPath, "osu!gameplay.dll");
const ezppGameplayFile = path.join(osuPath, "EZPPLauncher", "ezpp!gameplay.dll");
await fs.promises.rename(oldOsuUIFile, ezppUIFile);
await fs.promises.rename(
path.join(osuPath, "osu!ui.dll.bak"),
oldOsuUIFile,
);
await fs.promises.rename(oldOsuGameplayFile, ezppGameplayFile);
await fs.promises.rename(
path.join(osuPath, "osu!gameplay.dll.bak"),
oldOsuGameplayFile,
);
}
}
async function findOsuInstallation() {
const regedit = require("regedit-rs");
const osuLocationFromDefaultIcon =
"HKLM\\SOFTWARE\\Classes\\osu\\DefaultIcon";
const osuKey = regedit.listSync(osuLocationFromDefaultIcon);
if (osuKey[osuLocationFromDefaultIcon].exists) {
const key = osuKey[osuLocationFromDefaultIcon].values[""];
let value = key.value;
value = value.substring(1, value.length - 3);
return path.dirname(value.trim());
}
return undefined;
}
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async function updateOsuConfigHashes(osuPath) {
const osuCfg = path.join(osuPath, "osu!.cfg");
const fileStream = await fs.promises.readFile(osuCfg, "utf-8");
const lines = fileStream.split(/\r?\n/);
const newLines = [];
for (const line of lines) {
if (line.includes(" = ")) {
const argsPair = line.split(" = ", 2);
const key = argsPair[0];
const value = argsPair[1];
if (key.startsWith("h_")) {
const fileName = key.substring(2, key.length);
const filePath = path.join(osuPath, fileName);
if (!fs.existsSync(filePath)) continue;
const binaryFileContents = await fs.promises.readFile(filePath);
const existingFileMD5 = crypto.createHash("md5").update(
binaryFileContents,
).digest("hex");
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if (value == existingFileMD5) newLines.push(line);
else newLines.push(`${key} = ${existingFileMD5}`);
} else if (line.startsWith("u_UpdaterAutoStart")) {
newLines.push(`${key} = 0`);
} else {
newLines.push(line);
}
} else {
newLines.push(line);
}
}
await fs.promises.writeFile(osuCfg, newLines.join("\n"), "utf-8");
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}
module.exports = {
isValidOsuFolder,
getUserConfig,
getGlobalConfig,
getUpdateFiles,
getFilesThatNeedUpdate,
downloadUpdateFiles,
runOsuWithDevServer,
replaceUIFiles,
findOsuInstallation,
updateOsuConfigHashes,
runOsuUpdater,
getEZPPLauncherUpdateFiles,
downloadEZPPLauncherUpdateFiles,
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gamemodes
};